Merging upstream version 1.11.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1246 files changed, 86633 insertions, 22164 deletions

diff --git a/.codacy.yml b/.codacy.yml
index 0e3f44365..62f669ab3 100644
--- a/.codacy.yml
+++ b/.codacy.yml
@@ -1,15 +1,12 @@
 ---
 exclude_paths:
-  - python.d/python_modules/pyyaml2/**
-  - python.d/python_modules/pyyaml3/**
-  - python.d/python_modules/urllib3/**
-  - python.d/python_modules/lm_sensors.py
+  - collectors/python.d.plugin/python_modules/pyyaml2/**
+  - collectors/python.d.plugin/python_modules/pyyaml3/**
+  - collectors/python.d.plugin/python_modules/urllib3/**
+  - collectors/python.d.plugin/python_modules/third_party/**
   - web/css/**
   - web/lib/**
   - web/old/**
-  - node.d/node_modules/lib/**
-  - node.d/node_modules/asn1-ber.js
-  - node.d/node_modules/net-snmp.js
-  - node.d/node_modules/pixl-xml.js
-  - node.d/node_modules/extend.js
+  - web/gui/src/**
+  - collectors/node.d.plugin/node_modules/**
   - tests/**
diff --git a/.codeclimate.yml b/.codeclimate.yml
index f53287ad7..8a11c84a6 100644
--- a/.codeclimate.yml
+++ b/.codeclimate.yml
@@ -81,20 +81,19 @@ plugins:
         enabled: false
 exclude_patterns:
   - ".gitignore"
-  - "conf.d/"
-  - "hooks/"
+  - ".githooks/"
   - "tests/"
   - "m4/"
   - "web/css/"
   - "web/lib/"
   - "web/fonts/"
   - "web/old/"
-  - "python.d/python_modules/pyyaml2/"
-  - "python.d/python_modules/pyyaml3/"
-  - "python.d/python_modules/urllib3/"
-  - "node.d/node_modules/lib/"
-  - "node.d/node_modules/asn1-ber.js"
-  - "node.d/node_modules/extend.js"
-  - "node.d/node_modules/pixl-xml.js"
-  - "node.d/node_modules/net-snmp.js"
+  - "collectors/python.d.plugin/python_modules/pyyaml2/"
+  - "collectors/python.d.plugin/python_modules/pyyaml3/"
+  - "collectors/python.d.plugin/python_modules/urllib3/"
+  - "collectors/node.d.plugin/node_modules/lib/"
+  - "collectors/node.d.plugin/node_modules/asn1-ber.js"
+  - "collectors/node.d.plugin/node_modules/extend.js"
+  - "collectors/node.d.plugin/node_modules/pixl-xml.js"
+  - "collectors/node.d.plugin/node_modules/net-snmp.js"
 
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
new file mode 100644
index 000000000..f4e61be24
--- /dev/null
+++ b/.github/CODEOWNERS
@@ -0,0 +1,31 @@
+# Global (default) code owner
+* @ktsaou
+
+# Ownership by directory structure
+.travis/ @paulfantom
+# backends/
+build/ @paulfantom
+collectors/python.d.plugin/ @l2isbad @Ferroin
+contrib/ @paulfantom
+daemon/ @ktsaou
+database/ @ktsaou
+docker/ @paulfantom
+# health/ 
+# installer/
+# libnetdata/ 
+# makeself/ 
+packaging/ @paulfantom
+# registry/
+# streaming/
+# system/ 
+# tests/
+# web/
+
+# Ownership of specific files
+CHANGELOG.md @netdatabot
+.travis.yml @paulfantom
+.lgtm.yml @paulfantom
+
+# Ownership by filetype (overwrites ownership by directory)
+*.am @paulfantom @ktsaou
+*.c *.h @ktsaou @vlvkobal
diff --git a/.gitignore b/.gitignore
index cd69d7ea5..c3f327b37 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,15 @@
 .deps
 .libs
+.dirstamp
+.project
+.pydevproject
 
 *.o
+*.a
 config.h.in
 Makefile.in
 *~
+.*.swp
 *.old
 *.log
 *.pyc
@@ -25,12 +30,20 @@ ltmain.sh
 missing
 stamp-h1
 netdata.spec
+sha256sums.txt
 
 # netdata binaries
 netdata
+!netdata/
+
 apps.plugin
+!apps.plugin/
+
 freeipmi.plugin
+!freeipmi.plugin/
+
 cgroup-network
+!cgroup-network/
 
 # netdata makeself archives
 *.tar.*
@@ -52,15 +65,15 @@ netdata-coverity-analysis.tgz
 .settings/
 README
 TODO.md
-conf.d/netdata.conf
-src/TODO.txt
+netdata.conf
+TODO.txt
 
-web/chart-info/
-web/control.html
-web/datasource.css
-web/gadget.xml
-web/index_new.html
-web/version.txt
+web/gui/chart-info/
+web/gui/control.html
+web/gui/datasource.css
+web/gui/gadget.xml
+web/gui/index_new.html
+web/gui/version.txt
 
 # related to karma/javascript/node
 /node_modules/
@@ -71,7 +84,17 @@ system/netdata-openrc
 system/netdata-init-d
 system/netdata.logrotate
 system/netdata.service
+system/netdata.plist
 system/netdata-freebsd
+system/edit-config
+
+health/notifications/alarm-notify.sh
+collectors/cgroups.plugin/cgroup-name.sh
+collectors/tc.plugin/tc-qos-helper.sh
+collectors/charts.d.plugin/charts.d.plugin
+collectors/node.d.plugin/node.d.plugin
+collectors/python.d.plugin/python.d.plugin
+collectors/fping.plugin/fping.plugin
 
 # installer generated files
 netdata-uninstaller.sh
@@ -79,6 +102,7 @@ netdata-updater.sh
 
 # cmake files
 cmake-build-debug/
+cmake-build-release/
 CMakeCache.txt
 CMakeFiles/
 cmake_install.cmake
@@ -97,16 +121,19 @@ diagrams/*.atxt
 diagrams/plantuml.jar
 
 # cppcheck
-src/cppcheck-build/
+cppcheck-build/
+
+venv/
 
 # debugging / profiling
 makeself/debug/
-profile/benchmark-dictionary
-profile/benchmark-registry
-profile/test-eval
-profile/benchmark-line-parsing
-profile/benchmark-procfile-parser
-profile/statsd-stress
+tests/profile/benchmark-dictionary
+tests/profile/benchmark-registry
+tests/profile/test-eval
+tests/profile/benchmark-line-parsing
+tests/profile/benchmark-procfile-parser
+tests/profile/benchmark-value-pairs
+tests/profile/statsd-stress
 oprofile_data/
 vgcore.*
 callgrind.out.*
diff --git a/.lgtm.yml b/.lgtm.yml
new file mode 100644
index 000000000..7b789e7ea
--- /dev/null
+++ b/.lgtm.yml
@@ -0,0 +1,23 @@
+---
+# LGTM does a good job at classifying files, but sometimes it needs some help.
+# To classify files which shouldn't be checked we need to define where such
+# files are located and manually assign them one of possible categories:
+#   docs, generated, library, template, test
+# More information can be found in lgtm documentation:
+# https://help.semmle.com/lgtm-enterprise/user/help/file-classification.html#built-in-tags
+# https://lgtm.com/help/lgtm/lgtm.yml-configuration-file
+path_classifiers:
+  library:
+    - collectors/python.d.plugin/python_modules/third_party/
+    - collectors/python.d.plugin/python_modules/urllib3/
+    - collectors/python.d.plugin/python_modules/pyyaml2/
+    - collectors/python.d.plugin/python_modules/pyyaml3/
+    - collectors/node.d.plugin/node_modules/lib/
+    - collectors/node.d.plugin/node_modules/asn1-ber.js
+    - collectors/node.d.plugin/node_modules/extend.js
+    - collectors/node.d.plugin/node_modules/net-snmp.js
+    - collectors/node.d.plugin/node_modules/pixl-xml.js
+    - web/gui/lib/
+    - web/gui/css/
+  test:
+    - tests/
diff --git a/.travis/README.md b/.travis/README.md
new file mode 100644
index 000000000..5a51b2a7c
--- /dev/null
+++ b/.travis/README.md
@@ -0,0 +1,80 @@
+# Description of CI build configuration
+
+## Variables needed by travis
+
+- GITHUB_TOKEN - GitHub token with push access to repository
+- DOCKER_USERNAME - Username (netdatabot) with write access to docker hub repository
+- DOCKER_PASSWORD - Password to docker hub
+- encrypted_decb6f6387c4_key - Something to do with package releasing (soon to be deprecated)
+- encrypted_decb6f6387c4_iv - Something to do with package releasing (soon to be deprecated)
+- OLD_DOCKER_USERNAME - Username used to push images to firehol/netdata # TODO: remove after deprecating that repo
+- OLD_DOCKER_PASSWORD - Password used to push images to firehol/netdata # TODO: remove after deprecating that repo
+
+## Stages
+
+### Test
+
+Unit tests and coverage tests are executed here. Stage consists of 2 parallel jobs:
+  - C tests - executed every time
+  - coverity test - executed only when pipeline was triggered from cron
+
+### Build
+
+Stage is executed every time and consists of 5 parallel jobs which execute containerized and non-containerized
+installations of netdata. Jobs are run on following operating systems:
+  - OSX
+  - ubuntu 14.04
+  - ubuntu 16.04 (containerized)
+  - CentOS 6 (containerized)
+  - CentOS 7 (containerized)
+  - alpine (containerized)
+
+### Release
+
+This stage is executed only on "master" brach and allows us to create a new tag just looking at git commit message.
+It also has an option to automatically generate changelog based on GitHub labels and sync it with GitHub release.
+For the sake of simplicity and to use travis features this stage cannot be integrated with next stage.
+
+Releases are generated by searching for a keyword in last commit message. Keywords are:
+ - [patch] or [fix] to bump patch number
+ - [minor], [feature] or [feat] to bump minor number
+ - [major] or [breaking change] to bump major number
+All keywords MUST be surrounded with square braces.
+Alternative is to push a tag to master branch.
+
+### Packaging
+
+This stage is executed only on "master" branch and it is separated into 3 jobs:
+  - Update Changelog/Create release
+  - Nightly tarball and self-extractor build
+  - Nightly docker images
+
+##### Update Changelog/Create release
+
+This job is running one script called `releaser.sh`, which is responsible for a couple of things. First of all it 
+automatically updates our CHANGELOG.md file based on GitHub features (mostly labels and pull requests). Apart from 
+that it can also create a new git tag and a github draft release connected to that tag.
+Releases are generated by searching for a keyword in last commit message. Keywords are:
+ - `[netdata patch release]` to bump patch number
+ - `[netdata minor release]` to bump minor number
+ - `[netdata major release]` to bump major number
+All keywords MUST be surrounded with square brackets.
+
+Alternatively new release can be also created by pushing new tag to master branch.
+
+##### Nightly tarball and self-extractor build AND Nightly docker images
+
+As names might suggest those two jobs are responsible for nightly netdata package creation and are run every day (in
+cron). Combined they produce:
+  - docker images
+  - tar.gz archive (soon to be removed)
+  - self-extracting package
+
+Currently "Nightly tarball and self-extractor build" is using old firehol script and it is planed to be replaced with
+new design.
+
+##### Nightly changelog generation
+
+This job is responsible for regenerating changelog every day by executing `generate_changelog.sh` script. This is done
+only once a day due to github rate limiter.
+
diff --git a/.travis/containerized_build.sh b/.travis/containerized_build.sh
new file mode 100755
index 000000000..314a2ec39
--- /dev/null
+++ b/.travis/containerized_build.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -e
+
+docker build -t dev-image -f ".travis/images/Dockerfile.$1" .
+
+docker run -it -w /code dev-image ./netdata-installer.sh --dont-wait --dont-start-it --install /tmp
diff --git a/.travis/create_artifacts.sh b/.travis/create_artifacts.sh
new file mode 100755
index 000000000..40ba9c85f
--- /dev/null
+++ b/.travis/create_artifacts.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+# shellcheck disable=SC2230
+
+if [ ! -f .gitignore ]
+then
+  echo "Run as ./travis/$(basename "$0") from top level directory of git repository"
+  exit 1
+fi
+
+# Make sure stdout is in blocking mode. If we don't, then conda create will barf during downloads.
+# See https://github.com/travis-ci/travis-ci/issues/4704#issuecomment-348435959 for details.
+python -c 'import os,sys,fcntl; flags = fcntl.fcntl(sys.stdout, fcntl.F_GETFL); fcntl.fcntl(sys.stdout, fcntl.F_SETFL, flags&~os.O_NONBLOCK);'
+echo "--- Create tarball ---"
+autoreconf -ivf
+./configure
+make dist
+echo "--- Create self-extractor ---"
+./makeself/build-x86_64-static.sh
+
+echo "--- Create checksums ---"
+GIT_TAG=$(git tag --points-at)
+if [ "${GIT_TAG}" != "" ]; then
+    ln -s netdata-latest.gz.run "netdata-${GIT_TAG}.gz.run"
+    ln -s netdata-*.tar.gz "netdata-${GIT_TAG}.tar.gz"
+    sha256sum -b "netdata-${GIT_TAG}.gz.run" "netdata-${GIT_TAG}.tar.gz" > "sha256sums.txt"
+else
+    sha256sum -b ./*.tar.gz ./*.gz.run > "sha256sums.txt"
+fi
+
+echo "checksums:"
+cat sha256sums.txt
+
+
diff --git a/.travis/deploy-if-have-key b/.travis/deploy-if-have-key
index 1933eeb2e..8b3b40f7e 100755
--- a/.travis/deploy-if-have-key
+++ b/.travis/deploy-if-have-key
@@ -46,6 +46,10 @@ fi
 
 ssh-keyscan -H firehol.org >> ~/.ssh/known_hosts
 ssh travis@firehol.org mkdir -p uploads/netdata/$TRAVIS_BRANCH/
-scp -p *.tar.* travis@firehol.org:uploads/netdata/$TRAVIS_BRANCH/
-scp -p *.gz.run* travis@firehol.org:uploads/netdata/$TRAVIS_BRANCH/
+scp -p *.tar.gz travis@firehol.org:uploads/netdata/$TRAVIS_BRANCH/
+scp -p *.tar.gz.sha travis@firehol.org:uploads/netdata/$TRAVIS_BRANCH/
+scp -p *.tar.gz.asc travis@firehol.org:uploads/netdata/$TRAVIS_BRANCH/
+scp -p *.gz.run travis@firehol.org:uploads/netdata/$TRAVIS_BRANCH/
+scp -p *.gz.run.sha travis@firehol.org:uploads/netdata/$TRAVIS_BRANCH/
+scp -p *.gz.run.asc travis@firehol.org:uploads/netdata/$TRAVIS_BRANCH/
 ssh travis@firehol.org touch uploads/netdata/$TRAVIS_BRANCH/complete.txt
diff --git a/.travis/firehol_create_artifacts.sh b/.travis/firehol_create_artifacts.sh
new file mode 100755
index 000000000..3fcb910e7
--- /dev/null
+++ b/.travis/firehol_create_artifacts.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+# shellcheck disable=SC2230
+
+# WARNING: This script is deprecated and placed here until @paulfantom figures out how to fully replace it
+
+if [ ! -f .gitignore ]
+then
+  echo "Run as ./travis/$(basename "$0") from top level directory of git repository"
+  exit 1
+fi
+
+eval "$(ssh-agent -s)"
+./.travis/decrypt-if-have-key decb6f6387c4
+export KEYSERVER=ipv4.pool.sks-keyservers.net
+./packaging/gpg-recv-key phil@firehol.org "0762 9FF7 89EA 6156 012F  9F50 C406 9602 1359 9237"
+./packaging/gpg-recv-key costa@tsaousis.gr "4DFF 624A E564 3B51 2872  1F40 29CA 3358 89B9 A863"
+# Run the commit hooks in case the developer didn't
+git diff 4b825dc642cb6eb9a060e54bf8d69288fbee4904 | ./packaging/check-files -
+fakeroot ./packaging/git-build
+# Make sure stdout is in blocking mode. If we don't, then conda create will barf during downloads.
+# See https://github.com/travis-ci/travis-ci/issues/4704#issuecomment-348435959 for details.
+python -c 'import os,sys,fcntl; flags = fcntl.fcntl(sys.stdout, fcntl.F_GETFL); fcntl.fcntl(sys.stdout, fcntl.F_SETFL, flags&~os.O_NONBLOCK);'
+echo "--- Create tarball ---"
+make dist
+echo "--- Create self-extractor ---"
+./makeself/build-x86_64-static.sh
+echo "--- Create checksums ---"
+for i in *.tar.gz; do sha512sum -b "$i" > "$i.sha"; done #FIXME remove?
+for i in *.gz.run; do sha512sum -b "$i" > "$i.sha"; done #FIXME remove?
+sha256sum -b ./*.tar.gz ./*.gz.run > "sha256sums.txt"
+./.travis/deploy-if-have-key
diff --git a/.travis/generate_changelog.sh b/.travis/generate_changelog.sh
new file mode 100755
index 000000000..bc8be1023
--- /dev/null
+++ b/.travis/generate_changelog.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+set -e
+
+if [ ! -f .gitignore ]
+then
+  echo "Run as ./travis/$(basename "$0") from top level directory of git repository"
+  exit 1
+fi
+
+ORGANIZATION=$(echo "$TRAVIS_REPO_SLUG" | awk -F '/' '{print $1}')
+PROJECT=$(echo "$TRAVIS_REPO_SLUG" | awk -F '/' '{print $2}')
+GIT_MAIL="pawel+bot@netdata.cloud"
+GIT_USER="netdatabot"
+
+echo "--- Initialize git configuration ---"
+git config user.email "${GIT_MAIL}"
+git config user.name "${GIT_USER}"
+
+echo "--- Creating changelog ---"
+git checkout master
+git pull
+#docker run -it --rm -v "$(pwd)":/usr/local/src/your-app ferrarimarco/github-changelog-generator:1.14.3 \
+docker run -it -v "$(pwd)":/project markmandel/github-changelog-generator:latest \
+                                                        --user "${ORGANIZATION}" \
+                                                        --project "${PROJECT}" \
+                                                        --token "${GITHUB_TOKEN}" \
+                                                        --since-tag "v1.10.0" \
+                                                        --unreleased-label "**Next release**" \
+                                                        --no-compare-link \
+                                                        --exclude-labels duplicate,question,invalid,wontfix,discussion,documentation
+
+echo "--- Uploading changelog ---"
+git add CHANGELOG.md
+git commit -m '[ci skip] Automatic changelog update'
+git push "https://${GITHUB_TOKEN}:@$(git config --get remote.origin.url | sed -e 's/^https:\/\///')"
diff --git a/.travis/images/Dockerfile.alpine b/.travis/images/Dockerfile.alpine
new file mode 100644
index 000000000..15f527165
--- /dev/null
+++ b/.travis/images/Dockerfile.alpine
@@ -0,0 +1,5 @@
+FROM alpine:latest
+
+RUN apk add bash gcc make autoconf automake pkgconfig zlib-dev libuuid git libmnl-dev util-linux-dev build-base
+
+COPY . /code
diff --git a/.travis/images/Dockerfile.centos6 b/.travis/images/Dockerfile.centos6
new file mode 100644
index 000000000..c286fb95c
--- /dev/null
+++ b/.travis/images/Dockerfile.centos6
@@ -0,0 +1,5 @@
+FROM centos:6
+
+RUN yum install -y gcc make autoconf automake pkg-config zlib-devel libuuid-devel git
+
+COPY . /code
diff --git a/.travis/images/Dockerfile.centos7 b/.travis/images/Dockerfile.centos7
new file mode 100644
index 000000000..d94359dec
--- /dev/null
+++ b/.travis/images/Dockerfile.centos7
@@ -0,0 +1,5 @@
+FROM centos:7
+
+RUN yum install -y gcc make autoconf automake pkg-config zlib-devel libuuid-devel git
+
+COPY . /code
diff --git a/.travis/images/Dockerfile.ubuntu1804 b/.travis/images/Dockerfile.ubuntu1804
new file mode 100644
index 000000000..30ac7cf71
--- /dev/null
+++ b/.travis/images/Dockerfile.ubuntu1804
@@ -0,0 +1,6 @@
+FROM ubuntu:18.04
+
+RUN apt-get update && \
+    apt-get install -y gcc make autoconf automake pkg-config zlib1g-dev uuid-dev git
+
+COPY . /code
diff --git a/.travis/releaser.sh b/.travis/releaser.sh
new file mode 100755
index 000000000..9f7ecd4ee
--- /dev/null
+++ b/.travis/releaser.sh
@@ -0,0 +1,83 @@
+#!/bin/bash
+# SPDX-License-Identifier: MIT
+# Copyright (C) 2018 Pawel Krupa (@paulfantom) - All Rights Reserved
+# Permission to copy and modify is granted under the MIT license
+#
+# Original script is available at https://github.com/paulfantom/travis-helper/blob/master/releasing/releaser.sh
+#
+# Script to automatically do a couple of things:
+#   - generate a new tag according to semver (https://semver.org/)
+#   - generate CHANGELOG.md by using https://github.com/skywinder/github-changelog-generator
+#   - create draft of GitHub releases by using https://github.com/github/hub
+#
+# Tags are generated by searching for a keyword in last commit message. Keywords are:
+#  - [patch] or [fix] to bump patch number
+#  - [minor], [feature] or [feat] to bump minor number
+#  - [major] or [breaking change] to bump major number
+# All keywords MUST be surrounded with square braces.
+#
+# Script uses git mechanisms for locking, so it can be used in parallel builds
+#
+# Requirements:
+#   - GITHUB_TOKEN variable set with GitHub token. Access level: repo.public_repo
+#   - docker
+#   - git-semver python package (pip install git-semver)
+
+set -e
+
+if [ ! -f .gitignore ]
+then
+  echo "Run as ./travis/$(basename "$0") from top level directory of git repository"
+  exit 1
+fi
+
+echo "---- GENERATING CHANGELOG -----"
+./.travis/generate_changelog.sh
+
+echo "---- FIGURING OUT TAGS ----"
+# Check if current commit is tagged or not
+GIT_TAG=$(git tag --points-at)
+if [ -z "${GIT_TAG}" ]; then
+  git semver
+  # Figure out next tag based on commit message
+  GIT_TAG=HEAD
+  echo "Last commit message: $TRAVIS_COMMIT_MESSAGE"
+  case "${TRAVIS_COMMIT_MESSAGE}" in
+    *"[netdata patch release]"* ) GIT_TAG="v$(git semver --next-patch)" ;;
+    *"[netdata minor release]"* ) GIT_TAG="v$(git semver --next-minor)" ;;
+    *"[netdata major release]"* ) GIT_TAG="v$(git semver --next-major)" ;;
+    *) echo "Keyword not detected. Doing nothing" ;;
+  esac
+
+  # Tag it!
+  if [ "$GIT_TAG" != "HEAD" ]; then
+      echo "Assigning a new tag: $GIT_TAG"
+      git tag "$GIT_TAG" -a -m "Automatic tag generation for travis build no. $TRAVIS_BUILD_NUMBER"
+      # git is able to push due to configuration already being initialized in `generate_changelog.sh` script
+      git push "https://${GITHUB_TOKEN}:@$(git config --get remote.origin.url | sed -e 's/^https:\/\///')" --tags
+  fi
+fi
+
+if [ "${GIT_TAG}" == "HEAD" ]; then
+    echo "Not creating a release since neither of two conditions was met:"
+    echo "  - keyword in commit message"
+    echo "  - commit is tagged"
+    exit 0
+fi
+
+echo "---- CREATING TAGGED DOCKER CONTAINERS ----"
+export REPOSITORY="netdata/netdata"
+./docker/build.sh
+
+echo "---- CREATING RELEASE ARTIFACTS -----"
+./.travis/create_artifacts.sh
+
+echo "---- CREATING RELEASE DRAFT WITH ASSETS -----"
+# Download hub
+HUB_VERSION=${HUB_VERSION:-"2.5.1"}
+wget "https://github.com/github/hub/releases/download/v${HUB_VERSION}/hub-linux-amd64-${HUB_VERSION}.tgz" -O "/tmp/hub-linux-amd64-${HUB_VERSION}.tgz"
+tar -C /tmp -xvf "/tmp/hub-linux-amd64-${HUB_VERSION}.tgz"
+export PATH=$PATH:"/tmp/hub-linux-amd64-${HUB_VERSION}/bin"
+
+# Create a release draft
+hub release create --draft -a "netdata-${GIT_TAG}.tar.gz" -a "netdata-${GIT_TAG}.gz.run" -a "sha256sums.txt" -m "${GIT_TAG}" "${GIT_TAG}"
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
new file mode 100644
index 000000000..646a7d481
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,74 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team lead at costa@tsaousis.gr. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
new file mode 100644
index 000000000..fde3d0b4f
--- /dev/null
+++ b/CONTRIBUTORS.md
@@ -0,0 +1,123 @@
+<!--
+SPDX-License-Identifier: GPL-3.0-or-later
+-->
+
+# netdata contributors license agreement
+
+**Thank you for contributing to netdata!**
+
+This agreement is part of the legal framework of the open-source ecosystem
+that adds some red tape, but protects both the contributor and the project.
+
+To understand why this is needed, please read [a well-written chapter from
+Karl Fogel’s Producing Open Source Software on CLAs](http://producingoss.com/en/copyright-assignment.html).
+
+By signing this agreement, you do not change your rights to use your own
+contributions for any other purpose.
+
+## copyright license
+
+The Contributor (*you*) grants netdata Inc. a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable copyright license to reproduce,
+prepare derivative works of, publicly display, publicly perform, sublicense,
+and distribute his contributions and such derivative works.
+
+## copyright transfer
+
+The Contributor (*you*) hereby assigns netdata Inc. copyright in his
+contributions, to be licensed under the same terms as the rest of the code.
+
+> *Note: this means we may re-license netdata (your contributions included)
+> any way we see fit, without asking your permission.
+> Open-source licenses have significant differences and in our attempt to
+> help netdata grow we may have to distribute it under a different license.
+> For example, CNCF, the Cloud Native Computing Foundation, requires netdata
+> to be licensed under Apache-2.0 for it to be accepted as a member of the
+> Foundation. We want to be free to do it.*
+
+## original work
+
+The Contributor (*you*) represent that each of his contributions is his
+original creation and that he is legally entitled to grant the above license.
+
+> *Note: if you are committing third party code, please make sure the third party
+> license or any other restrictions are also included with your commits.
+> netdata includes many third party libraries and tools and this is not a
+> problem, provided that the license of the third party code is compatible with
+> the one we use for netdata.*
+
+## signature
+
+Since Sep 17th 2018, we use https://cla-assistant.io/netdata/netdata for signing the CLA, on all pull requests.
+Old contributors can sign the CLA at any time using this link.
+
+## HISTORICAL SIGNATURES
+(they have been imported to https://cla-assistant.io/netdata/netdata already)
+
+The Contributor (*you*) signs this agreement by adding his personal data in
+this document and committing it to the project repo
+(the same way contributions are submitted to the project).
+
+By signing once, all contributions (past and future) of The Contributor (*you*),
+are subject to this agreement.
+
+> *Note: so you have to:*
+> 1. add your github username and name in this file
+> 2. commit it to the repo with a PR, using the same github username, or include this change in your first PR.
+
+# netdata contributors
+
+This is the list of contributors that have signed this agreement:
+
+username|name|email (optional)
+:--------:|:----:|:----------------
+@lets00|Luís Eduardo|leduardo@lsd.ufcg.edu.br
+@ktsaou|Costa Tsaousis|costa@tsaousis.gr
+@tycho|Steven Noonan|steven@uplinklabs.net
+@philwhineray|Phil Whineray|
+@paulfantom|Paweł Krupa|pawel@krupa.net.pl
+@Ferroin|Austin S. Hemmelgarn|ahferroin7@gmail.com
+@glensc|Elan Ruusamäe|
+@l2isbad|Ilya Mashchenko|ilyamaschenko@gmail.com
+@rlefevre|Rémi Lefèvre|
+@vlvkobal|Vladimir Kobal|vlad@prokk.net
+@simonnagl|Simon Nagl|
+@manosf|Emmanouil Fokas|manosf@protonmail.com
+@user501254|Ashesh Singh|user501254@gmail.com
+@t-h-e|Stefan Forstenlechner|
+@facetoe|Facetoe|
+@ntlug|Christopher Cox|ccox@endlessnow.com
+@alonbl|Alon Bar-Lev|alon.barlev@gmail.com
+@Wing924|Wei He|weihe924stephen@gmail.com
+@NeonSludge|Kirill Buev|kirill.buev@gmx.com
+@kmlucy|Kyle Lucy|kmlucy@gmail.com
+@RicardoSette|Ricardo Sette|ricardosette@freebsdbrasil.com.br
+@383c57|Shinichi Tagashira|
+@davidak|David Kleuker|netdata-contributors+vyff@davidak.de
+@ccremer|Christian Cremer|
+@jimcooley|Jim Cooley|jim.cooley@healthvana.com
+@Chocobo1|Mike Tzou|
+@cosmix|Dimosthenis Kaponis|
+@shadycuz|Levi Blaney|shadycuz+spam@gmail.com
+@Flums|Philip Gabrielsen|philip@digno.no
+@domschl|Dominik Schlösser|dominik.schloesser@gmail.com
+@tioumen|Guillaume Hospital|
+@arch273|Jacob Ayres
+@x4FF3|David Fuellgraf|
+@jasonwbarnett|Jason Barnett|
+@ecowed|Ed Wade|
+@wungad|Rob Man|
+@rda0|Sven Mäder|maeder@phys.ethz.ch
+@alibo|Ali Borhani|aliborhani1@gmail.com
+@Nani-o|Sofiane Medjkoune|sofiane@medjkoune.fr
+@n0guest|Evgeniy K.|ask@osshelp.ru
+@amichelic|Adalbert Michelic|
+@abalabahaha|abalabahaha|hi@abal.moe
+@illes|Illes S.|
+@plasticrake|Patrick Seal
+@jonfairbanks|Jon Fairbanks
+@pjz|Paul Jimenez|pj@place.org
+@jgrossiord|Julien Grossiord|julien@grossiord.net
+@pohzipohzi|Poh Zi How
+@vladmovchan|Vladyslav Movchan|vladislav.movchan@gmail.com
+@gmosx|George Moschovitis
diff --git a/COPYING b/COPYING
deleted file mode 100644
index 94a9ed024..000000000
--- a/COPYING
+++ /dev/null
@@ -1,674 +0,0 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-                            Preamble
-
-  The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
-  The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works.  By contrast,
-the GNU General Public License is intended to guarantee your freedom to
-share and change all versions of a program--to make sure it remains free
-software for all its users.  We, the Free Software Foundation, use the
-GNU General Public License for most of our software; it applies also to
-any other work released this way by its authors.  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-  To protect your rights, we need to prevent others from denying you
-these rights or asking you to surrender the rights.  Therefore, you have
-certain responsibilities if you distribute copies of the software, or if
-you modify it: responsibilities to respect the freedom of others.
-
-  For example, if you distribute copies of such a program, whether
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-
-  Developers that use the GNU GPL protect your rights with two steps:
-(1) assert copyright on the software, and (2) offer you this License
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-
-  The precise terms and conditions for copying, distribution and
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-
-                       TERMS AND CONDITIONS
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diff --git a/ChangeLog b/ChangeLog
deleted file mode 100644
index c1980c802..000000000
--- a/ChangeLog
+++ /dev/null
@@ -1,655 +0,0 @@
-netdata (1.10.0) - 2018-03-27
-
- Please check full changelog at github.
- https://github.com/firehol/netdata/releases
- 
-
-netdata (1.9.0) - 2017-12-17
-
- Please check full changelog at github.
- https://github.com/firehol/netdata/releases
- 
-
-netdata (1.8.0) - 2017-09-17
-
- This is mainly a bugfix release.
- Please check full changelog at github.
- 
-
-netdata (1.7.0) - 2017-07-16
-
- * netdata is still spreading fast
-
-   we are at 320.000 users and 132.000 servers
-
-   Almost 100k new users, 52k new installations and 800k docker pulls
-   since the previous release, 4 and a half months ago.
-
-   netdata user base grows at about 1000 new users and 600 new servers
-   per day. Thank you. You are awesome.
-
- * The next release (v1.8) will be focused on providing a global health
-   monitoring service, for all netdata users, for free.
-
- * netdata is now a (very fast) fully featured statsd server and the
-   only one with automatic visualization: push a statsd metric and hit
-   F5 on the netdata dashboard: your metric visualized. It also supports
-   synthetic charts, defined by you, so that you can correlate and
-   visualize your application the way you like it.
-
- * netdata got new installation options
-   It is now easier than ever to install netdata - we also distribute a
-   statically linked netdata x86_64 binary, including key dependencies
-   (like bash, curl, etc) that can run everywhere a Linux kernel runs
-   (CoreOS, CirrOS, etc).
-
- * metrics streaming and replication has been improved significantly.
-   All known issues have been solved and key enhancements have been added.
-   Headless collectors and proxies can now send metrics to backends when
-   data source = as collected.
-
- * backends have got quite a few enhancements, including host tags and
-   metrics filtering at the netdata side;
-   prometheus support has been re-written to utilize more prometheus
-   features and provide more flexibility and integration options.
-
- * netdata now monitors ZFS (on Linux and FreeBSD), ElasticSearch,
-   RabbitMQ, Go applications (via expvar), ipfw (on FreeBSD 11), samba,
-   squid logs (with web_log plugin).
-
- * netdata dashboard loading times have been improved significantly
-   (hit F5 a few times on a netdata dashboard - it is now amazingly fast),
-   to support dashboards with thousands of charts.
-
- * netdata alarms now support custom hooks, so you can run whatever you
-   like in parallel with netdata alarms.
-
- * As usual, this release brings dozens of more improvements, enhancements
-   and compatibility fixes.
-
-
-netdata (1.6.0) - 2017-03-20
-
- * birthday release: 1 year netdata
-
-   netdata was first published on March 30th, 2016.
-   It has been a crazy year since then:
-
-     225.000 unique netdata users
-             currently, at 1.000 new unique users per day
-
-      80.000 unique netdata installations
-             currently, at 500 new installation per day
-
-     610.000 docker pulls on docker hub
-
-   4.000.000 netdata sessions served
-             currently, at 15.000 sessions served per day
-
-      20.000 github stars
-
-             Thank you!
-          You are awesome!
-
- * central netdata is here
-
-   This is the first release that supports real-time streaming of
-   metrics between netdata servers.
-
-   netdata can now be:
-
-   - autonomous host monitoring
-     (like it always has been)
-
-   - headless data collector
-     (collect and stream metrics in real-time to another netdata)
-
-   - headless proxy
-     (collect metrics from multiple netdata and stream them to another netdata)
-
-   - store and forward proxy
-     (like headless proxy, but with a local database)
-
-   - central database
-     (metrics from multiple hosts are aggregated)
-
-   metrics databases can be configured on all nodes and each node maintaining
-   a database may have a different retention policy and possibly run
-   (even different) alarms on them.
-
- * monitoring ephemeral nodes
-
-   netdata now supports monitoring autoscaled ephemeral nodes,
-   that are started and stopped on demand (their IP is not known).
-
-   When the ephemeral nodes start streaming metrics to the central
-   netdata, the central netdata will show register them at "my-netdata"
-   menu on the dashboard.
-
-   For more information check:
-   https://github.com/firehol/netdata/wiki/monitoring-ephemeral-nodes
-
- * monitoring ephemeral containers and VM guests
-
-   netdata now cleans up container, guest VM, network interfaces and mounted
-   disk metrics, disabling automatically their alarms too.
-
-   For more information check:
-   https://github.com/firehol/netdata/wiki/monitoring-ephemeral-containers
-
- * apps.plugin ported for FreeBSD
-
-   @vlvkobal has ported "apps.plugin" to FreeBSD. netdata can now provide
-   "Applications", "Users" and "User Groups" on FreeBSD.
-
- * web_log plugin
-
-   @l2isbad has done a wonderful job creating a unified web log parsing plugin
-   for all kinds of web server logs. With it, netdata provides real-time
-   performance information and health monitoring alarms for web applications
-   and web sites!
-
-   For more information check:
-   https://github.com/firehol/netdata/wiki/The-spectacles-of-a-web-server-log-file
-
- * backends
-
-   netdata can now archive metrics to `JSON` backends
-   (both push, by @lfdominguez, and pull modes).
-
- * IPMI monitoring
-
-   netdata now has an IPMI plugin (based on freeipmi)
-   for monitoring server hardware.
-
-   The plugin creates (up to) 8 charts:
-
-    1. number of sensors by state
-    2. number of events in SEL
-    3. Temperatures CELCIUS
-    4. Temperatures FAHRENHEIT
-    5. Voltages
-    6. Currents
-    7. Power
-    8. Fans
-
-   It also supports alarms (including the number of sensors in critical state).
-
-   For more information, check:
-   https://github.com/firehol/netdata/wiki/monitoring-IPMI
-
- * new plugins
-
-   @l2isbad builds python data collection plugins for netdata at an wonderfull
-   rate! He rocks!
-
-    - **web_log** for monitoring in real-time all kinds of web server log files @l2isbad
-    - **freeipmi** for monitoring IPMI (server hardware)
-    - **nsd** (the [name server daemon](https://www.nlnetlabs.nl/projects/nsd/)) @383c57
-    - **mongodb** @l2isbad
-    - **smartd_log** (monitoring disk S.M.A.R.T. values) @l2isbad
-
- * improved plugins
-
-    - **nfacct** reworked and now collects connection tracker information using netlink.
-    - **ElasticSearch** re-worked @l2isbad
-    - **mysql** re-worked to allow faster development of custom mysql based plugins (MySQLService) @l2isbad
-    - **SNMP**
-    - **tomcat** @NMcCloud
-    - **ap** (monitoring hostapd access points)
-    - **php_fpm** @l2isbad
-    - **postgres** @l2isbad
-    - **isc_dhcpd** @l2isbad
-    - **bind_rndc** @l2isbad
-    - **numa**
-    - **apps.plugin** improvements and freebsd support @vlvkobal
-    - **fail2ban** @l2isbad
-    - **freeradius** @l2isbad
-    - **nut** (monitoring UPSes)
-    - **tc** (Linux QoS) now works on qdiscs instead of classes for the same result (a lot faster) @t-h-e
-    - **varnish** @l2isbad
-
- * new and improved alarms
-    - **web_log**, many alarms to detect common web site/API issues
-    - **fping**, alarms to detect packet loss, disconnects and unusually high latency
-    - **cpu**, cpu utilization alarm now ignores `nice`
-
- * new and improved alarm notification methods
-    - **HipChat** to allow hosted HipChat @frei-style
-    - **discordapp** @lowfive
-
- * dashboard improvements
-    - dashboard now works on HiDPi screens
-    - dashboard now shows version of netdata
-    - dashboard now resets charts properly
-    - dashboard updated to use latest gauge.js release
-
- * other improvements
-    - thanks to @rlefevre netdata now uses a lot of different high resolution system clocks.
-
- netdata has received a lot more improvements from many more  contributors!
-
- Thank you all!
-
-
-netdata (1.5.0) - 2017-01-22
-
- * yet another release that makes netdata the fastest
-   netdata ever!
-
- * netdata runs on FreeBSD, FreeNAS and MacOS !
-
-   Vladimir Kobal (@vlvkobal) has done a magnificent work
-   porting netdata to FreeBSD and MacOS.
-
-   Everyhing works: cpu, memory, disks performance, disks space,
-   network interfaces, interrupts, IPv4 metrics, IPv6 metrics
-   processes, context switches, softnet, IPC queues,
-   IPC semaphores, IPC shared memory, uptime, etc. Wow!
-
- * netdata supports data archiving to backend databases:
-
-    - Graphite
-    - OpenTSDB
-    - Prometheus
-
-   and of course all the compatible ones
-   (KairosDB, InfluxDB, Blueflood, etc)
-
- * new plugins:
-
-   Ilya Mashchenko (@l2isbad) has created most of the python
-   data collection plugins in this release !
-
-    - systemd Services (using cgroups!)
-    - FPing (yes, network latency in netdata!)
-    - postgres databases            @facetoe, @moumoul
-    - Vanish disk cache (v3 and v4) @l2isbad
-    - ElasticSearch                 @l2isbad
-    - HAproxy                       @l2isbad
-    - FreeRadius                    @l2isbad, @lgz
-    - mdstat (RAID)                 @l2isbad
-    - ISC bind (via rndc)           @l2isbad
-    - ISC dhcpd                     @l2isbad, @lgz
-    - Fail2Ban                      @l2isbad
-    - OpenVPN status log            @l2isbad, @lgz
-    - NUMA memory                   @tycho
-    - CPU Idle                      @tycho
-    - gunicorn log                  @deltaskelta
-    - ECC memory hardware errors
-    - IPC semaphores
-    - uptime plugin (with a nice badge too)
-
- * improved plugins:
-
-    - netfilter conntrack
-    - mysql (replication)           @l2isbad
-    - ipfs                          @pjz
-    - cpufreq                       @tycho
-    - hddtemp                       @l2isbad
-    - sensors                       @l2isbad
-    - nginx                         @leolovenet
-    - nginx_log                     @paulfantom
-    - phpfpm                        @leolovenet
-    - redis                         @leolovenet
-    - dovecot                       @justohall
-    - cgroups
-    - disk space
-    - apps.plugin
-    - /proc/interrupts              @rlefevre
-    - /proc/softirqs                @rlefevre
-    - /proc/vmstat       (system memory charts)
-    - /proc/net/snmp6    (IPv6 charts)
-    - /proc/self/meminfo (system memory charts)
-    - /proc/net/dev      (network interfaces)
-    - tc                 (linux QoS)
-
- * new/improved alarms:
-
-    - MySQL / MariaDB alarms (incl. replication)
-    - IPFS alarms
-    - HAproxy alarms
-    - UDP buffer alarms
-    - TCP AttemptFails
-    - ECC memory alarms
-    - netfilter connections alarms
-    - SNMP
-
- * new alarm notifications:
-
-    - messagebird.com               @tech-no-logical
-    - pagerduty.com                 @jimcooley
-    - pushbullet.com                @tperalta82
-    - twilio.com                    @shadycuz
-    - HipChat
-    - kafka
-
- * shell integration
-
-   - shell scripts can now query netdata easily!
-
- * dashboard improvements:
-   - dashboard is now faster on firefox, safari, opera, edge
-     (edge is still the slowest)
-   - dashboard now has a little bigger fonts
-   - SHIFT + mouse wheel to zoom charts, works on all browsers
-   - perfect-scrollbar on the dashboard
-   - dashboard 4K resolution fixes
-   - dashboard compatibility fixes for embedding charts in
-     third party web sites
-   - charts on custom dashboards can have common min/max
-     even if they come from different netdata servers
-   - alarm log is now saved and loaded back so that
-     the alarm history is available at the dashboard
-
- * other improvements:
-   - python.d.plugin has received way to many improvements
-     from many contributors!
-   - charts.d.plugin can now be forked to support
-     multiple independent instances
-   - registry has been re-factored to lower its memory
-     requirements (required for the public registry)
-   - simple patterns in cgroups, disks and alarms
-   - netdata-installer.sh can now correctly install
-     netdata in containers
-   - supplied logrotate script compatibility fixes
-   - spec cleanup                  @breed808
-   - clocks and timers reworked    @rlefevre
-
- netdata has received a lot more improvements from many more
- contributors!
-
- Thank you all guys!
- 
- 
-netdata (1.4.0) - 2016-10-04
-
- At a glance:
-
- - the fastest netdata ever (with a better look too)!
- - improved IoT and containers support!
- - alarms improved in almost every way!
-
- - new plugins:
-      softnet netdev,
-      extended TCP metrics,
-      UDPLite
-      NFS v2, v3 client (server was there already),
-      NFS v4 server & client,
-      APCUPSd,
-      RetroShare
-
- - improved plugins:
-      mysql,
-      cgroups,
-      hddtemp,
-      sensors,
-      phpfm,
-      tc (QoS)
-
- In detail:
-
- * improved alarms
-
-   Many new alarms have been added to detect common kernel
-   configuration errors and old alarms have been re-worked
-   to avoid notification floods.
-
-   Alarms now support notification hysteresis (both static
-   and dynamic), notification self-cancellation, dynamic
-   thresholds based on current alarm status
-
- * improved alarm notifications
-
-   netdata now supports:
-
-   - email notifications
-   - slack.com notifications on slack channels
-   - pushover.net notifications (mobile push notifications)
-   - telegram.org notifications
-
-   For all the above methods, netdata supports role-based
-   notifications, with multiple recipients for each role
-   and severity filtering per recipient!
-
-   Also, netdata support HTML5 notifications, while the
-   dashboard is open in a browser window (no need to be
-   the active one).
-
-   All notifications are now clickable to get to the chart
-   that raised the alarm.
-
- * improved IoT support!
-
-   netdata builds and runs with musl libc and runs on systems
-   based on busybox.
-
- * improved containers support!
-
-   netdata runs on alpine linux (a low profile linux distribution
-   used in containers).
-
- * Dozens of other improvements and bugfixes
- 
- 
-netdata (1.3.0) - 2016-08-28
-
- At a glance:
-
- - netdata has health monitoring / alarms!
- - netdata has badges that can be embeded anywhere!
- - netdata plugins are now written in Python!
- - new plugins: redis, memcached, nginx_log, ipfs, apache_cache
-
- IMPORTANT:
- Since netdata now uses Python plugins, new packages are
- required to be installed on a system to allow it work.
- For more information, please check the installation page:
-
- https://github.com/firehol/netdata/wiki/Installation
-
- In detail:
-
- * netdata has alarms!
-
-   Based on the POLL we made on github
-   (https://github.com/firehol/netdata/issues/436),
-   health monitoring was the winner. So here it is!
-
-   netdata now has a poweful health monitoring system embedded.
-   Please check the wiki page:
-
-   https://github.com/firehol/netdata/wiki/health-monitoring
-
- * netdata has badges!
-
-   netdata can generate badges with live information from the
-   collected metrics.
-   Please check the wiki page:
-
-   https://github.com/firehol/netdata/wiki/Generating-Badges
-
- * netdata plugins are now written in Python!
-
-   Thanks to the great work of Paweł Krupa (@paulfantom), most BASH
-   plugins have been ported to Python.
-
-   The new python.d.plugin supports both python2 and python3 and
-   data collection from multiple sources for all modules.
-
-   The following pre-existing modules have been ported to Python:
-
-    - apache
-    - cpufreq
-    - example
-    - exim
-    - hddtemp
-    - mysql
-    - nginx
-    - phpfm
-    - postfix
-    - sensors
-    - squid
-    - tomcat
-
-   The following new modules have been added:
-
-    - apache_cache
-    - dovecot
-    - ipfs
-    - memcached
-    - nginx_log
-    - redis
-
- * other data collectors:
-
-    - Thanks to @simonnagl netdata now reports disk space usage.
-
- * dashboards now transfer a certain settings from server to server
-   when changing servers via the my-netdata menu.
-
-   The settings transferred are the dashboard theme, the online
-   help status and current pan and zoom timeframe of the dashboard.
-
- * API improvements:
-
-   - reduction functions now support 'min', 'sum' and 'incremental-sum'.
-
-   - netdata now offers a multi-threaded and a single threaded
-     web server (single threaded is better for IoT).
-
- * apps.plugin improvements:
-
-   - can now run with command line argument 'without-files'
-     to prevent it from enumating all the open files/sockets/pipes
-     of all running processes.
-
-   - apps.plugin now scales the collected values to match the
-     the total system usage.
-
-   - apps.plugin can now report guest CPU usage per process.
-
-   - repeating errors are now logged once per process.
-
- * netdata now runs with IDLE process priority (lower than nice 19)
-
- * netdata now instructs the kernel to kill it first when it starves
-   for memory.
-
- * netdata listens for signals:
-
-   - SIGHUP to netdata instructs it to re-open its log files
-     (new logrotate files added too).
-
-   - SIGUSR1 to netdata saves the database
-
-   - SIGUSR2 to netdata reloads health / alarms configuration
-
- * netdata can now bind to multiple IPs and ports.
-
- * netdata now has new systemd service file (it starts as user
-   netdata and does not fork).
-
- * Dozens of other improvements and bugfixes
- 
- 
-netdata (1.2.0) - 2016-05-16
-
- At a glance:
-
- - netdata is now 30% faster
- - netdata now has a registry (my-netdata dashboard menu)
- - netdata now monitors Linux Containers (docker, lxc, etc)
-
- IMPORTANT:
- This version requires libuuid. The package you need is:
-
-  - uuid-dev (debian/ubuntu), or
-  - libuuid-devel (centos/fedora/redhat)
-
- In detail:
-
- * netdata is now 30% faster !
-
-   - Patches submitted by @fredericopissarra improved overall
-     netdata performance by 10%.
-
-   - A new improved search function in the internal indexes
-     made all searches faster by 50%, resulting in about
-     20% better performance for the core of netdata.
-
-   - More efficient threads locking in key components
-     contributed to the overal efficiency.
-
- * netdata now has a CENTRAL REGISTRY !
-
-   The central registry tracks all your netdata servers
-   and bookmarks them for you at the 'my-netdata' menu
-   on all dashboards.
-
-   Every netdata can act as a registry, but there is also
-   a global registry provided for free for all netdata users!
-
- * netdata now monitors CONTAINERS !
-   
-   docker, lxc, or anything else. For each container it monitors
-   CPU, RAM, DISK I/O (network interfaces were already monitored)
-
- * apps.plugin: now uses linux capabilities by default
-   without setuid to root
-
- * netdata has now an improved signal handler
-   thanks to @simonnagl
-
- * API: new improved CORS support
-
- * SNMP: counter64 support fixed
-
- * MYSQL: more charts, about QCache, MyISAM key cache,
-   InnoDB buffer pools, open files
-
- * DISK charts now show mount point when available
-
- * Dashboard: improved support for older web browsers
-   and mobile web browsers (thanks to @simonnagl)
-
- * Multi-server dashboards now allow de-coupled refreshes for
-   each chart, so that if one netdata has a network latency
-   the other charts are not affected
-
- * Several other minor improvements and bugfixes
- 
- 
-netdata (1.1.0) - 2016-04-20
-
- Dozens of commits that improve netdata in several ways:
-
- - Data collection: added IPv6 monitoring
- - Data collection: added SYNPROXY DDoS protection monitoring
- - Data collection: apps.plugin: added charts for users and user groups
- - Data collection: apps.plugin: grouping of processes now support patterns
- - Data collection: apps.plugin: now it is faster, after the new features added
- - Data collection: better auto-detection of partitions for disk monitoring
- - Data collection: better fireqos intergation for QoS monitoring
- - Data collection: squid monitoring now uses squidclient
- - Data collection: SNMP monitoring now supports 64bit counters
- - API: fixed issues in CSV output generation
- - API: netdata can now be restricted to listen on a specific IP
- - Core and apps.plugin: error log flood protection
- - Dashboard: better error handling when the netdata server is unreachable
- - Dashboard: each chart now has a toolbox
- - Dashboard: on-line help support
- - Dashboard: check for netdata updates button
- - Dashboard: added example /tv.html dashboard
- - Packaging: now compiles with musl libc (alpine linux)
- - Packaging: added debian packaging
- - Packaging: support non-root installations
- - Packaging: the installer generates uninstall script
-
-netdata (1.0.0) - 2016-03-22
-
- - first public release
-
-netdata (1.0.0-rc.1) - 2015-11-28
-
- - initial packaging
diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index cb1f75cb9..000000000
--- a/Dockerfile
+++ /dev/null
@@ -1,15 +0,0 @@
-# author  : titpetric
-# original: https://github.com/titpetric/netdata
-
-FROM debian:stretch
-
-ADD . /netdata.git
-
-RUN cd ./netdata.git && chmod +x ./docker-build.sh && sync && sleep 1 && ./docker-build.sh
-
-WORKDIR /
-
-ENV NETDATA_PORT 19999
-EXPOSE $NETDATA_PORT
-
-CMD /usr/sbin/netdata -D -s /host -p ${NETDATA_PORT}
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
deleted file mode 100644
index 544269876..000000000
--- a/Dockerfile.aarch64
+++ /dev/null
@@ -1,19 +0,0 @@
-# author  : titpetric
-# original: https://github.com/titpetric/netdata
-
-FROM resin/aarch64-debian:stretch
-
-RUN [ "cross-build-start"]
-
-ADD . /netdata.git
-
-RUN cd ./netdata.git && chmod +x ./docker-build.sh && sync && sleep 1 && ./docker-build.sh
-
-WORKDIR /
-
-ENV NETDATA_PORT 19999
-EXPOSE $NETDATA_PORT
-
-CMD /usr/sbin/netdata -D -s /host -p ${NETDATA_PORT}
-
-RUN [ "cross-build-end"]
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
deleted file mode 100644
index bd958116c..000000000
--- a/Dockerfile.alpine
+++ /dev/null
@@ -1,58 +0,0 @@
-FROM alpine:edge as builder
-
-# Install prerequisites
-RUN apk --no-cache add alpine-sdk autoconf automake libmnl-dev build-base jq \
-                       lm_sensors nodejs pkgconfig py-mysqldb python libuuid \
-                       py-psycopg2 py-yaml util-linux-dev zlib-dev curl bash \
-                       netcat-openbsd
-
-# Copy source
-COPY . /opt/netdata.git
-WORKDIR /opt/netdata.git
-
-# Install source
-RUN chmod +x ./netdata-installer.sh && \
-    sync && sleep 1 && \
-    ./netdata-installer.sh --dont-wait --dont-start-it
-
-################################################################################
-FROM alpine:edge
-
-# Reinstall some prerequisites
-RUN apk --no-cache add lm_sensors nodejs libuuid python py-mysqldb \
-                       py-psycopg2 py-yaml netcat-openbsd jq curl fping
-
-# Copy files over
-COPY --from=builder /usr/share/netdata   /usr/share/netdata
-COPY --from=builder /usr/libexec/netdata /usr/libexec/netdata
-COPY --from=builder /var/cache/netdata   /var/cache/netdata
-COPY --from=builder /var/lib/netdata     /var/lib/netdata
-COPY --from=builder /usr/sbin/netdata    /usr/sbin/netdata
-COPY --from=builder /etc/netdata         /etc/netdata
-
-ARG NETDATA_UID=101
-ARG NETDATA_GID=101
-
-RUN \
-    # fping from alpine apk is on a different location. Moving it.
-    mv /usr/sbin/fping /usr/local/bin/fping && \
-    chmod 4755 /usr/local/bin/fping && \
-    mkdir -p /var/log/netdata && \
-    # Add netdata user
-    addgroup -g ${NETDATA_GID} -S netdata && \
-    adduser -S -H -s /bin/sh -u ${NETDATA_GID} -h /etc/netdata -G netdata netdata && \
-    # Apply the permissions as described in
-    # https://github.com/firehol/netdata/wiki/netdata-security#netdata-directories
-    chown -R root:netdata /etc/netdata && \
-    chown -R netdata:netdata /var/cache/netdata /var/lib/netdata /usr/share/netdata && \
-    chown root:netdata /usr/libexec/netdata/plugins.d/apps.plugin /usr/libexec/netdata/plugins.d/cgroup-network && \
-    chmod 4750 /usr/libexec/netdata/plugins.d/cgroup-network /usr/libexec/netdata/plugins.d/apps.plugin && \
-    chmod 0750 /var/lib/netdata /var/cache/netdata && \
-    # Link log files to stdout
-    ln -sf /dev/stdout /var/log/netdata/access.log && \
-    ln -sf /dev/stdout /var/log/netdata/debug.log && \
-    ln -sf /dev/stderr /var/log/netdata/error.log
-
-EXPOSE 19999
-
-CMD [ "/usr/sbin/netdata" , "-D", "-s", "/host", "-p", "19999"]
diff --git a/Dockerfile.armv7hf b/Dockerfile.armv7hf
deleted file mode 100644
index 278e45424..000000000
--- a/Dockerfile.armv7hf
+++ /dev/null
@@ -1,19 +0,0 @@
-# author  : titpetric
-# original: https://github.com/titpetric/netdata
-
-FROM resin/armv7hf-debian:stretch
-
-RUN [ "cross-build-start"]
-
-ADD . /netdata.git
-
-RUN cd ./netdata.git && chmod +x ./docker-build.sh && sync && sleep 1 && ./docker-build.sh
-
-WORKDIR /
-
-ENV NETDATA_PORT 19999
-EXPOSE $NETDATA_PORT
-
-CMD /usr/sbin/netdata -D -s /host -p ${NETDATA_PORT}
-
-RUN [ "cross-build-end"]
diff --git a/LICENSE b/LICENSE
index 9cecc1d46..1351f44ec 100644
--- a/LICENSE
+++ b/LICENSE
@@ -672,3 +672,13 @@ may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
+---------------------------------------------------------------------------
+
+Note:
+Individual files contain the following tag instead of the full license text.
+
+	SPDX-License-Identifier:	GPL-3.0-or-later
+
+This enables machine processing of license information based on the SPDX
+License Identifiers that are here available: http://spdx.org/licenses/
diff --git a/LICENSE.md b/LICENSE.md
deleted file mode 100644
index 37a09f485..000000000
--- a/LICENSE.md
+++ /dev/null
@@ -1,9 +0,0 @@
-**netdata**<br/>
-(C) Copyright 2017<br/>
-Costa Tsaousis &lt;costa@tsaousis.gr&gt;
-
-For license details refer to the following files:
-
-- [netdata license](LICENSE) (GPL v3+)
-- [third party licenses](LICENSE-REDISTRIBUTED.md), for packages re-distributed with netdata
-
diff --git a/Makefile.am b/Makefile.am
index f20cfc3da..c7fa48c6b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,8 +1,7 @@
-#
-# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
-#
-AUTOMAKE_OPTIONS=foreign dist-bzip2 dist-xz 1.10
-ACLOCAL_AMFLAGS = -I m4
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS=foreign subdir-objects 1.10
+ACLOCAL_AMFLAGS = -I build/m4
 
 MAINTAINERCLEANFILES= \
 	config.log config.status \
@@ -23,39 +22,34 @@ EXTRA_DIST = \
 	.csslintrc \
 	.eslintignore \
 	.eslintrc \
+	.lgtm.yml \
 	.travis \
-	m4/jemalloc.m4 \
-    m4/ax_c___atomic.m4 \
-    m4/ax_check_enable_debug.m4 \
-    m4/ax_c_mallinfo.m4 \
-    m4/ax_gcc_func_attribute.m4 \
-    m4/ax_check_compile_flag.m4 \
-    m4/ax_c_statement_expressions.m4 \
-    m4/ax_pthread.m4 \
-    m4/ax_c_lto.m4 \
-    m4/ax_c_mallopt.m4 \
-    m4/tcmalloc.m4 \
-    m4/ax_c__generic.m4 \
-	autogen.sh \
+	.github/CODEOWNERS \
+	build/build.sh \
+	build/Dockerfile \
+	build/m4/jemalloc.m4 \
+	build/m4/ax_c___atomic.m4 \
+	build/m4/ax_check_enable_debug.m4 \
+	build/m4/ax_c_mallinfo.m4 \
+	build/m4/ax_gcc_func_attribute.m4 \
+	build/m4/ax_check_compile_flag.m4 \
+	build/m4/ax_c_statement_expressions.m4 \
+	build/m4/ax_pthread.m4 \
+	build/m4/ax_c_lto.m4 \
+	build/m4/ax_c_mallopt.m4 \
+	build/m4/tcmalloc.m4 \
+	build/m4/ax_c__generic.m4 \
 	README.md \
+	CONTRIBUTORS.md \
+	CODE_OF_CONDUCT.md \
 	LICENSE \
-	LICENSE.md \
-	LICENSE-REDISTRIBUTED.md \
-	COPYING \
-	autogen.sh \
+	REDISTRIBUTED.md \
 	$(NULL)
 
 SUBDIRS = \
-	charts.d \
-	conf.d \
 	diagrams \
 	makeself \
-	node.d \
-	plugins.d \
-	python.d \
-	src \
 	system \
-	web \
 	contrib \
 	tests \
 	$(NULL)
@@ -63,10 +57,7 @@ SUBDIRS = \
 dist_noinst_DATA= \
 	cppcheck.sh \
 	configs.signatures \
-	Dockerfile \
-	Dockerfile.alpine \
-	Dockerfile.aarch64 \
-	Dockerfile.armv7hf \
+	docker \
 	netdata.cppcheck \
 	netdata.spec \
 	package.json \
@@ -76,9 +67,415 @@ dist_noinst_DATA= \
 # should be proper init.d/openrc/systemd usable
 dist_noinst_SCRIPTS= \
 	coverity-scan.sh \
-	docker-build.sh \
 	kickstart.sh \
 	kickstart-static64.sh \
 	netdata-installer.sh \
 	installer/functions.sh \
 	$(NULL)
+
+# -----------------------------------------------------------------------------
+# Compile netdata binaries
+
+SUBDIRS += \
+    backends \
+    collectors \
+    daemon \
+    database \
+    health \
+    libnetdata \
+    registry \
+    streaming \
+    web \
+	$(NULL)
+
+
+AM_CFLAGS = \
+	$(OPTIONAL_MATH_CFLAGS) \
+	$(OPTIONAL_NFACCT_CLFAGS) \
+	$(OPTIONAL_ZLIB_CFLAGS) \
+	$(OPTIONAL_UUID_CFLAGS) \
+	$(OPTIONAL_LIBCAP_LIBS) \
+	$(OPTIONAL_IPMIMONITORING_CFLAGS) \
+	$(NULL)
+
+sbin_PROGRAMS =
+dist_cache_DATA = installer/.keep
+dist_varlib_DATA = installer/.keep
+dist_registry_DATA = installer/.keep
+dist_log_DATA = installer/.keep
+plugins_PROGRAMS =
+
+LIBNETDATA_FILES = \
+    libnetdata/adaptive_resortable_list/adaptive_resortable_list.c \
+    libnetdata/adaptive_resortable_list/adaptive_resortable_list.h \
+    libnetdata/config/appconfig.c \
+    libnetdata/config/appconfig.h \
+    libnetdata/avl/avl.c \
+    libnetdata/avl/avl.h \
+    libnetdata/buffer/buffer.c \
+    libnetdata/buffer/buffer.h \
+    libnetdata/clocks/clocks.c \
+    libnetdata/clocks/clocks.h \
+    libnetdata/dictionary/dictionary.c \
+    libnetdata/dictionary/dictionary.h \
+    libnetdata/eval/eval.c \
+    libnetdata/eval/eval.h \
+    libnetdata/inlined.h \
+    libnetdata/libnetdata.c \
+    libnetdata/libnetdata.h \
+    libnetdata/locks/locks.c \
+    libnetdata/locks/locks.h \
+    libnetdata/log/log.c \
+    libnetdata/log/log.h \
+    libnetdata/popen/popen.c \
+    libnetdata/popen/popen.h \
+    libnetdata/procfile/procfile.c \
+    libnetdata/procfile/procfile.h \
+    libnetdata/os.c \
+    libnetdata/os.h \
+    libnetdata/simple_pattern/simple_pattern.c \
+    libnetdata/simple_pattern/simple_pattern.h \
+    libnetdata/socket/socket.c \
+    libnetdata/socket/socket.h \
+    libnetdata/statistical/statistical.c \
+    libnetdata/statistical/statistical.h \
+    libnetdata/storage_number/storage_number.c \
+    libnetdata/storage_number/storage_number.h \
+    libnetdata/threads/threads.c \
+    libnetdata/threads/threads.h \
+	libnetdata/url/url.c \
+	libnetdata/url/url.h \
+    $(NULL)
+
+APPS_PLUGIN_FILES = \
+	collectors/apps.plugin/apps_plugin.c \
+	$(LIBNETDATA_FILES) \
+    $(NULL)
+
+CHECKS_PLUGIN_FILES = \
+    collectors/checks.plugin/plugin_checks.c \
+    collectors/checks.plugin/plugin_checks.h \
+    $(NULL)
+
+FREEBSD_PLUGIN_FILES = \
+	collectors/freebsd.plugin/plugin_freebsd.c \
+	collectors/freebsd.plugin/plugin_freebsd.h \
+	collectors/freebsd.plugin/freebsd_sysctl.c \
+	collectors/freebsd.plugin/freebsd_getmntinfo.c \
+	collectors/freebsd.plugin/freebsd_getifaddrs.c \
+	collectors/freebsd.plugin/freebsd_devstat.c \
+	collectors/freebsd.plugin/freebsd_kstat_zfs.c \
+	collectors/freebsd.plugin/freebsd_ipfw.c \
+	collectors/proc.plugin/zfs_common.c \
+	collectors/proc.plugin/zfs_common.h \
+    $(NULL)
+
+HEALTH_PLUGIN_FILES = \
+	health/health.c \
+	health/health.h \
+	health/health_config.c \
+	health/health_json.c \
+	health/health_log.c \
+    $(NULL)
+
+IDLEJITTER_PLUGIN_FILES = \
+	collectors/idlejitter.plugin/plugin_idlejitter.c \
+	collectors/idlejitter.plugin/plugin_idlejitter.h \
+    $(NULL)
+
+CGROUPS_PLUGIN_FILES = \
+    collectors/cgroups.plugin/sys_fs_cgroup.c \
+    collectors/cgroups.plugin/sys_fs_cgroup.h \
+    $(NULL)
+
+CGROUP_NETWORK_FILES = \
+    collectors/cgroups.plugin/cgroup-network.c \
+    $(LIBNETDATA_FILES) \
+    $(NULL)
+
+DISKSPACE_PLUGIN_FILES = \
+    collectors/diskspace.plugin/plugin_diskspace.h \
+    collectors/diskspace.plugin/plugin_diskspace.c \
+    $(NULL)
+
+FREEIPMI_PLUGIN_FILES = \
+    collectors/freeipmi.plugin/freeipmi_plugin.c \
+    $(LIBNETDATA_FILES) \
+    $(NULL)
+
+NFACCT_PLUGIN_FILES = \
+	collectors/nfacct.plugin/plugin_nfacct.c \
+	collectors/nfacct.plugin/plugin_nfacct.h \
+    $(NULL)
+
+PROC_PLUGIN_FILES = \
+	collectors/proc.plugin/ipc.c \
+	collectors/proc.plugin/plugin_proc.c \
+	collectors/proc.plugin/plugin_proc.h \
+	collectors/proc.plugin/proc_diskstats.c \
+	collectors/proc.plugin/proc_interrupts.c \
+	collectors/proc.plugin/proc_softirqs.c \
+	collectors/proc.plugin/proc_loadavg.c \
+	collectors/proc.plugin/proc_meminfo.c \
+	collectors/proc.plugin/proc_net_dev.c \
+	collectors/proc.plugin/proc_net_ip_vs_stats.c \
+	collectors/proc.plugin/proc_net_netstat.c \
+	collectors/proc.plugin/proc_net_rpc_nfs.c \
+	collectors/proc.plugin/proc_net_rpc_nfsd.c \
+	collectors/proc.plugin/proc_net_snmp.c \
+	collectors/proc.plugin/proc_net_snmp6.c \
+	collectors/proc.plugin/proc_net_sctp_snmp.c \
+	collectors/proc.plugin/proc_net_sockstat.c \
+	collectors/proc.plugin/proc_net_sockstat6.c \
+	collectors/proc.plugin/proc_net_softnet_stat.c \
+	collectors/proc.plugin/proc_net_stat_conntrack.c \
+	collectors/proc.plugin/proc_net_stat_synproxy.c \
+	collectors/proc.plugin/proc_self_mountinfo.c \
+	collectors/proc.plugin/proc_self_mountinfo.h \
+	collectors/proc.plugin/zfs_common.c \
+	collectors/proc.plugin/zfs_common.h \
+	collectors/proc.plugin/proc_spl_kstat_zfs.c \
+	collectors/proc.plugin/proc_stat.c \
+	collectors/proc.plugin/proc_sys_kernel_random_entropy_avail.c \
+	collectors/proc.plugin/proc_vmstat.c \
+	collectors/proc.plugin/proc_uptime.c \
+	collectors/proc.plugin/sys_kernel_mm_ksm.c \
+	collectors/proc.plugin/sys_devices_system_edac_mc.c \
+	collectors/proc.plugin/sys_devices_system_node.c \
+	collectors/proc.plugin/sys_fs_btrfs.c \
+    $(NULL)
+
+TC_PLUGIN_FILES = \
+	collectors/tc.plugin/plugin_tc.c \
+	collectors/tc.plugin/plugin_tc.h \
+    $(NULL)
+
+MACOS_PLUGIN_FILES = \
+	collectors/macos.plugin/plugin_macos.c \
+	collectors/macos.plugin/plugin_macos.h \
+	collectors/macos.plugin/macos_sysctl.c \
+	collectors/macos.plugin/macos_mach_smi.c \
+	collectors/macos.plugin/macos_fw.c \
+    $(NULL)
+
+PLUGINSD_PLUGIN_FILES = \
+	collectors/plugins.d/plugins_d.c \
+	collectors/plugins.d/plugins_d.h \
+    $(NULL)
+
+RRD_PLUGIN_FILES = \
+    database/rrdcalc.c \
+    database/rrdcalc.h \
+    database/rrdcalctemplate.c \
+    database/rrdcalctemplate.h \
+    database/rrddim.c \
+    database/rrddimvar.c \
+    database/rrddimvar.h \
+    database/rrdfamily.c \
+    database/rrdhost.c \
+    database/rrd.c \
+    database/rrd.h \
+    database/rrdset.c \
+    database/rrdsetvar.c \
+    database/rrdsetvar.h \
+    database/rrdvar.c \
+    database/rrdvar.h \
+    $(NULL)
+
+API_PLUGIN_FILES = \
+    web/api/badges/web_buffer_svg.c \
+    web/api/badges/web_buffer_svg.h \
+    web/api/exporters/allmetrics.c \
+    web/api/exporters/allmetrics.h \
+    web/api/exporters/shell/allmetrics_shell.c \
+    web/api/exporters/shell/allmetrics_shell.h \
+    web/api/queries/average/average.c \
+    web/api/queries/average/average.h \
+    web/api/queries/des/des.c \
+    web/api/queries/des/des.h \
+    web/api/queries/incremental_sum/incremental_sum.c \
+    web/api/queries/incremental_sum/incremental_sum.h \
+    web/api/queries/max/max.c \
+    web/api/queries/max/max.h \
+    web/api/queries/median/median.c \
+    web/api/queries/median/median.h \
+    web/api/queries/min/min.c \
+    web/api/queries/min/min.h \
+    web/api/queries/query.c \
+    web/api/queries/query.h \
+    web/api/queries/rrdr.c \
+    web/api/queries/rrdr.h \
+    web/api/queries/ses/ses.c \
+    web/api/queries/ses/ses.h \
+    web/api/queries/stddev/stddev.c \
+    web/api/queries/stddev/stddev.h \
+    web/api/queries/sum/sum.c \
+    web/api/queries/sum/sum.h \
+    web/api/formatters/rrd2json.c \
+    web/api/formatters/rrd2json.h \
+    web/api/formatters/csv/csv.c \
+    web/api/formatters/csv/csv.h \
+    web/api/formatters/json/json.c \
+    web/api/formatters/json/json.h \
+    web/api/formatters/ssv/ssv.c \
+    web/api/formatters/ssv/ssv.h \
+    web/api/formatters/value/value.c \
+    web/api/formatters/value/value.h \
+    web/api/formatters/json_wrapper.c \
+    web/api/formatters/json_wrapper.h \
+    web/api/formatters/charts2json.c \
+    web/api/formatters/charts2json.h \
+    web/api/formatters/rrdset2json.c \
+    web/api/formatters/rrdset2json.h \
+    web/api/web_api_v1.c \
+    web/api/web_api_v1.h \
+    $(NULL)
+
+STREAMING_PLUGIN_FILES = \
+    streaming/rrdpush.c \
+    streaming/rrdpush.h \
+    $(NULL)
+
+REGISTRY_PLUGIN_FILES = \
+	registry/registry.c \
+	registry/registry.h \
+	registry/registry_db.c \
+	registry/registry_init.c \
+	registry/registry_internals.c \
+	registry/registry_internals.h \
+	registry/registry_log.c \
+	registry/registry_machine.c \
+	registry/registry_machine.h \
+	registry/registry_person.c \
+	registry/registry_person.h \
+	registry/registry_url.c \
+	registry/registry_url.h \
+    $(NULL)
+
+STATSD_PLUGIN_FILES = \
+	collectors/statsd.plugin/statsd.c \
+	collectors/statsd.plugin/statsd.h \
+    $(NULL)
+
+WEB_PLUGIN_FILES = \
+    web/server/web_client.c \
+    web/server/web_client.h \
+    web/server/web_server.c \
+    web/server/web_server.h \
+    web/server/web_client_cache.c \
+    web/server/web_client_cache.h \
+    web/server/single/single-threaded.c \
+    web/server/single/single-threaded.h \
+    web/server/multi/multi-threaded.c \
+    web/server/multi/multi-threaded.h \
+    web/server/static/static-threaded.c \
+    web/server/static/static-threaded.h \
+    $(NULL)
+
+BACKENDS_PLUGIN_FILES = \
+    backends/backends.c \
+    backends/backends.h \
+    backends/graphite/graphite.c \
+    backends/graphite/graphite.h \
+    backends/json/json.c \
+    backends/json/json.h \
+    backends/opentsdb/opentsdb.c \
+    backends/opentsdb/opentsdb.h \
+    backends/prometheus/backend_prometheus.c \
+    backends/prometheus/backend_prometheus.h \
+    $(NULL)
+
+DAEMON_FILES = \
+	daemon/common.c \
+	daemon/common.h \
+	daemon/daemon.c \
+	daemon/daemon.h \
+	daemon/global_statistics.c \
+	daemon/global_statistics.h \
+	daemon/main.c \
+	daemon/main.h \
+	daemon/signals.c \
+	daemon/signals.h \
+	daemon/unit_test.c \
+	daemon/unit_test.h \
+    $(NULL)
+
+NETDATA_FILES = \
+    collectors/all.h \
+    $(DAEMON_FILES) \
+	$(LIBNETDATA_FILES) \
+	$(API_PLUGIN_FILES) \
+	$(BACKENDS_PLUGIN_FILES) \
+	$(CHECKS_PLUGIN_FILES) \
+	$(HEALTH_PLUGIN_FILES) \
+	$(IDLEJITTER_PLUGIN_FILES) \
+	$(PLUGINSD_PLUGIN_FILES) \
+	$(REGISTRY_PLUGIN_FILES) \
+	$(RRD_PLUGIN_FILES) \
+	$(STREAMING_PLUGIN_FILES) \
+	$(STATSD_PLUGIN_FILES) \
+	$(WEB_PLUGIN_FILES) \
+	$(NULL)
+
+if FREEBSD
+    NETDATA_FILES += \
+        $(FREEBSD_PLUGIN_FILES) \
+        $(NULL)
+endif
+
+if MACOS
+    NETDATA_FILES += \
+        $(MACOS_PLUGIN_FILES) \
+        $(NULL)
+endif
+
+if LINUX
+    NETDATA_FILES += \
+        $(CGROUPS_PLUGIN_FILES) \
+        $(DISKSPACE_PLUGIN_FILES) \
+        $(NFACCT_PLUGIN_FILES) \
+        $(PROC_PLUGIN_FILES) \
+        $(TC_PLUGIN_FILES) \
+        $(NULL)
+
+endif
+
+NETDATA_COMMON_LIBS = \
+	$(OPTIONAL_MATH_LIBS) \
+	$(OPTIONAL_ZLIB_LIBS) \
+	$(OPTIONAL_UUID_LIBS) \
+	$(NULL)
+
+
+sbin_PROGRAMS += netdata
+netdata_SOURCES = $(NETDATA_FILES)
+netdata_LDADD = \
+	$(NETDATA_COMMON_LIBS) \
+	$(OPTIONAL_NFACCT_LIBS) \
+	$(NULL)
+
+if ENABLE_PLUGIN_APPS
+    plugins_PROGRAMS += apps.plugin
+    apps_plugin_SOURCES = $(APPS_PLUGIN_FILES)
+    apps_plugin_LDADD = \
+    	$(NETDATA_COMMON_LIBS) \
+        $(OPTIONAL_LIBCAP_LIBS) \
+        $(NULL)
+endif
+
+if ENABLE_PLUGIN_CGROUP_NETWORK
+    plugins_PROGRAMS += cgroup-network
+    cgroup_network_SOURCES = $(CGROUP_NETWORK_FILES)
+    cgroup_network_LDADD = \
+    	$(NETDATA_COMMON_LIBS) \
+        $(NULL)
+endif
+
+if ENABLE_PLUGIN_FREEIPMI
+    plugins_PROGRAMS += freeipmi.plugin
+    freeipmi_plugin_SOURCES = $(FREEIPMI_PLUGIN_FILES)
+    freeipmi_plugin_LDADD = \
+    	$(NETDATA_COMMON_LIBS) \
+        $(OPTIONAL_IPMIMONITORING_LIBS) \
+        $(NULL)
+endif
diff --git a/Makefile.in b/Makefile.in
index 1bbf19aad..9b1c226b8 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -14,6 +14,9 @@
 
 @SET_MAKE@
 
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+
 
 VPATH = @srcdir@
 am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
@@ -79,21 +82,46 @@ PRE_UNINSTALL = :
 POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
+sbin_PROGRAMS = netdata$(EXEEXT)
+plugins_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3)
+@FREEBSD_TRUE@am__append_1 = \
+@FREEBSD_TRUE@        $(FREEBSD_PLUGIN_FILES) \
+@FREEBSD_TRUE@        $(NULL)
+
+@MACOS_TRUE@am__append_2 = \
+@MACOS_TRUE@        $(MACOS_PLUGIN_FILES) \
+@MACOS_TRUE@        $(NULL)
+
+@LINUX_TRUE@am__append_3 = \
+@LINUX_TRUE@        $(CGROUPS_PLUGIN_FILES) \
+@LINUX_TRUE@        $(DISKSPACE_PLUGIN_FILES) \
+@LINUX_TRUE@        $(NFACCT_PLUGIN_FILES) \
+@LINUX_TRUE@        $(PROC_PLUGIN_FILES) \
+@LINUX_TRUE@        $(TC_PLUGIN_FILES) \
+@LINUX_TRUE@        $(NULL)
+
+@ENABLE_PLUGIN_APPS_TRUE@am__append_4 = apps.plugin
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@am__append_5 = cgroup-network
+@ENABLE_PLUGIN_FREEIPMI_TRUE@am__append_6 = freeipmi.plugin
 subdir = .
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(top_srcdir)/configure $(am__configure_deps) \
 	$(srcdir)/config.h.in $(srcdir)/netdata.spec.in \
-	$(dist_noinst_SCRIPTS) $(dist_noinst_DATA) COPYING ChangeLog \
-	compile config.guess config.sub install-sh missing
+	$(dist_noinst_SCRIPTS) depcomp $(dist_cache_DATA) \
+	$(dist_log_DATA) $(dist_noinst_DATA) $(dist_registry_DATA) \
+	$(dist_varlib_DATA) compile config.guess config.sub install-sh \
+	missing
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
@@ -102,6 +130,405 @@ mkinstalldirs = $(install_sh) -d
 CONFIG_HEADER = config.h
 CONFIG_CLEAN_FILES = netdata.spec
 CONFIG_CLEAN_VPATH_FILES =
+@ENABLE_PLUGIN_APPS_TRUE@am__EXEEXT_1 = apps.plugin$(EXEEXT)
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@am__EXEEXT_2 =  \
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@	cgroup-network$(EXEEXT)
+@ENABLE_PLUGIN_FREEIPMI_TRUE@am__EXEEXT_3 = freeipmi.plugin$(EXEEXT)
+am__installdirs = "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(sbindir)" \
+	"$(DESTDIR)$(cachedir)" "$(DESTDIR)$(logdir)" \
+	"$(DESTDIR)$(registrydir)" "$(DESTDIR)$(varlibdir)"
+PROGRAMS = $(plugins_PROGRAMS) $(sbin_PROGRAMS)
+am__apps_plugin_SOURCES_DIST = collectors/apps.plugin/apps_plugin.c \
+	libnetdata/adaptive_resortable_list/adaptive_resortable_list.c \
+	libnetdata/adaptive_resortable_list/adaptive_resortable_list.h \
+	libnetdata/config/appconfig.c libnetdata/config/appconfig.h \
+	libnetdata/avl/avl.c libnetdata/avl/avl.h \
+	libnetdata/buffer/buffer.c libnetdata/buffer/buffer.h \
+	libnetdata/clocks/clocks.c libnetdata/clocks/clocks.h \
+	libnetdata/dictionary/dictionary.c \
+	libnetdata/dictionary/dictionary.h libnetdata/eval/eval.c \
+	libnetdata/eval/eval.h libnetdata/inlined.h \
+	libnetdata/libnetdata.c libnetdata/libnetdata.h \
+	libnetdata/locks/locks.c libnetdata/locks/locks.h \
+	libnetdata/log/log.c libnetdata/log/log.h \
+	libnetdata/popen/popen.c libnetdata/popen/popen.h \
+	libnetdata/procfile/procfile.c libnetdata/procfile/procfile.h \
+	libnetdata/os.c libnetdata/os.h \
+	libnetdata/simple_pattern/simple_pattern.c \
+	libnetdata/simple_pattern/simple_pattern.h \
+	libnetdata/socket/socket.c libnetdata/socket/socket.h \
+	libnetdata/statistical/statistical.c \
+	libnetdata/statistical/statistical.h \
+	libnetdata/storage_number/storage_number.c \
+	libnetdata/storage_number/storage_number.h \
+	libnetdata/threads/threads.c libnetdata/threads/threads.h \
+	libnetdata/url/url.c libnetdata/url/url.h
+am__dirstamp = $(am__leading_dot)dirstamp
+am__objects_1 = libnetdata/adaptive_resortable_list/adaptive_resortable_list.$(OBJEXT) \
+	libnetdata/config/appconfig.$(OBJEXT) \
+	libnetdata/avl/avl.$(OBJEXT) \
+	libnetdata/buffer/buffer.$(OBJEXT) \
+	libnetdata/clocks/clocks.$(OBJEXT) \
+	libnetdata/dictionary/dictionary.$(OBJEXT) \
+	libnetdata/eval/eval.$(OBJEXT) libnetdata/libnetdata.$(OBJEXT) \
+	libnetdata/locks/locks.$(OBJEXT) libnetdata/log/log.$(OBJEXT) \
+	libnetdata/popen/popen.$(OBJEXT) \
+	libnetdata/procfile/procfile.$(OBJEXT) libnetdata/os.$(OBJEXT) \
+	libnetdata/simple_pattern/simple_pattern.$(OBJEXT) \
+	libnetdata/socket/socket.$(OBJEXT) \
+	libnetdata/statistical/statistical.$(OBJEXT) \
+	libnetdata/storage_number/storage_number.$(OBJEXT) \
+	libnetdata/threads/threads.$(OBJEXT) \
+	libnetdata/url/url.$(OBJEXT)
+am__objects_2 = collectors/apps.plugin/apps_plugin.$(OBJEXT) \
+	$(am__objects_1)
+@ENABLE_PLUGIN_APPS_TRUE@am_apps_plugin_OBJECTS = $(am__objects_2)
+apps_plugin_OBJECTS = $(am_apps_plugin_OBJECTS)
+am__DEPENDENCIES_1 =
+am__DEPENDENCIES_2 = $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
+	$(am__DEPENDENCIES_1)
+@ENABLE_PLUGIN_APPS_TRUE@apps_plugin_DEPENDENCIES =  \
+@ENABLE_PLUGIN_APPS_TRUE@	$(am__DEPENDENCIES_2) \
+@ENABLE_PLUGIN_APPS_TRUE@	$(am__DEPENDENCIES_1)
+am__cgroup_network_SOURCES_DIST =  \
+	collectors/cgroups.plugin/cgroup-network.c \
+	libnetdata/adaptive_resortable_list/adaptive_resortable_list.c \
+	libnetdata/adaptive_resortable_list/adaptive_resortable_list.h \
+	libnetdata/config/appconfig.c libnetdata/config/appconfig.h \
+	libnetdata/avl/avl.c libnetdata/avl/avl.h \
+	libnetdata/buffer/buffer.c libnetdata/buffer/buffer.h \
+	libnetdata/clocks/clocks.c libnetdata/clocks/clocks.h \
+	libnetdata/dictionary/dictionary.c \
+	libnetdata/dictionary/dictionary.h libnetdata/eval/eval.c \
+	libnetdata/eval/eval.h libnetdata/inlined.h \
+	libnetdata/libnetdata.c libnetdata/libnetdata.h \
+	libnetdata/locks/locks.c libnetdata/locks/locks.h \
+	libnetdata/log/log.c libnetdata/log/log.h \
+	libnetdata/popen/popen.c libnetdata/popen/popen.h \
+	libnetdata/procfile/procfile.c libnetdata/procfile/procfile.h \
+	libnetdata/os.c libnetdata/os.h \
+	libnetdata/simple_pattern/simple_pattern.c \
+	libnetdata/simple_pattern/simple_pattern.h \
+	libnetdata/socket/socket.c libnetdata/socket/socket.h \
+	libnetdata/statistical/statistical.c \
+	libnetdata/statistical/statistical.h \
+	libnetdata/storage_number/storage_number.c \
+	libnetdata/storage_number/storage_number.h \
+	libnetdata/threads/threads.c libnetdata/threads/threads.h \
+	libnetdata/url/url.c libnetdata/url/url.h
+am__objects_3 = collectors/cgroups.plugin/cgroup-network.$(OBJEXT) \
+	$(am__objects_1)
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@am_cgroup_network_OBJECTS =  \
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@	$(am__objects_3)
+cgroup_network_OBJECTS = $(am_cgroup_network_OBJECTS)
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@cgroup_network_DEPENDENCIES =  \
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@	$(am__DEPENDENCIES_2)
+am__freeipmi_plugin_SOURCES_DIST =  \
+	collectors/freeipmi.plugin/freeipmi_plugin.c \
+	libnetdata/adaptive_resortable_list/adaptive_resortable_list.c \
+	libnetdata/adaptive_resortable_list/adaptive_resortable_list.h \
+	libnetdata/config/appconfig.c libnetdata/config/appconfig.h \
+	libnetdata/avl/avl.c libnetdata/avl/avl.h \
+	libnetdata/buffer/buffer.c libnetdata/buffer/buffer.h \
+	libnetdata/clocks/clocks.c libnetdata/clocks/clocks.h \
+	libnetdata/dictionary/dictionary.c \
+	libnetdata/dictionary/dictionary.h libnetdata/eval/eval.c \
+	libnetdata/eval/eval.h libnetdata/inlined.h \
+	libnetdata/libnetdata.c libnetdata/libnetdata.h \
+	libnetdata/locks/locks.c libnetdata/locks/locks.h \
+	libnetdata/log/log.c libnetdata/log/log.h \
+	libnetdata/popen/popen.c libnetdata/popen/popen.h \
+	libnetdata/procfile/procfile.c libnetdata/procfile/procfile.h \
+	libnetdata/os.c libnetdata/os.h \
+	libnetdata/simple_pattern/simple_pattern.c \
+	libnetdata/simple_pattern/simple_pattern.h \
+	libnetdata/socket/socket.c libnetdata/socket/socket.h \
+	libnetdata/statistical/statistical.c \
+	libnetdata/statistical/statistical.h \
+	libnetdata/storage_number/storage_number.c \
+	libnetdata/storage_number/storage_number.h \
+	libnetdata/threads/threads.c libnetdata/threads/threads.h \
+	libnetdata/url/url.c libnetdata/url/url.h
+am__objects_4 = collectors/freeipmi.plugin/freeipmi_plugin.$(OBJEXT) \
+	$(am__objects_1)
+@ENABLE_PLUGIN_FREEIPMI_TRUE@am_freeipmi_plugin_OBJECTS =  \
+@ENABLE_PLUGIN_FREEIPMI_TRUE@	$(am__objects_4)
+freeipmi_plugin_OBJECTS = $(am_freeipmi_plugin_OBJECTS)
+@ENABLE_PLUGIN_FREEIPMI_TRUE@freeipmi_plugin_DEPENDENCIES =  \
+@ENABLE_PLUGIN_FREEIPMI_TRUE@	$(am__DEPENDENCIES_2) \
+@ENABLE_PLUGIN_FREEIPMI_TRUE@	$(am__DEPENDENCIES_1)
+am__netdata_SOURCES_DIST = collectors/all.h daemon/common.c \
+	daemon/common.h daemon/daemon.c daemon/daemon.h \
+	daemon/global_statistics.c daemon/global_statistics.h \
+	daemon/main.c daemon/main.h daemon/signals.c daemon/signals.h \
+	daemon/unit_test.c daemon/unit_test.h \
+	libnetdata/adaptive_resortable_list/adaptive_resortable_list.c \
+	libnetdata/adaptive_resortable_list/adaptive_resortable_list.h \
+	libnetdata/config/appconfig.c libnetdata/config/appconfig.h \
+	libnetdata/avl/avl.c libnetdata/avl/avl.h \
+	libnetdata/buffer/buffer.c libnetdata/buffer/buffer.h \
+	libnetdata/clocks/clocks.c libnetdata/clocks/clocks.h \
+	libnetdata/dictionary/dictionary.c \
+	libnetdata/dictionary/dictionary.h libnetdata/eval/eval.c \
+	libnetdata/eval/eval.h libnetdata/inlined.h \
+	libnetdata/libnetdata.c libnetdata/libnetdata.h \
+	libnetdata/locks/locks.c libnetdata/locks/locks.h \
+	libnetdata/log/log.c libnetdata/log/log.h \
+	libnetdata/popen/popen.c libnetdata/popen/popen.h \
+	libnetdata/procfile/procfile.c libnetdata/procfile/procfile.h \
+	libnetdata/os.c libnetdata/os.h \
+	libnetdata/simple_pattern/simple_pattern.c \
+	libnetdata/simple_pattern/simple_pattern.h \
+	libnetdata/socket/socket.c libnetdata/socket/socket.h \
+	libnetdata/statistical/statistical.c \
+	libnetdata/statistical/statistical.h \
+	libnetdata/storage_number/storage_number.c \
+	libnetdata/storage_number/storage_number.h \
+	libnetdata/threads/threads.c libnetdata/threads/threads.h \
+	libnetdata/url/url.c libnetdata/url/url.h \
+	web/api/badges/web_buffer_svg.c \
+	web/api/badges/web_buffer_svg.h web/api/exporters/allmetrics.c \
+	web/api/exporters/allmetrics.h \
+	web/api/exporters/shell/allmetrics_shell.c \
+	web/api/exporters/shell/allmetrics_shell.h \
+	web/api/queries/average/average.c \
+	web/api/queries/average/average.h web/api/queries/des/des.c \
+	web/api/queries/des/des.h \
+	web/api/queries/incremental_sum/incremental_sum.c \
+	web/api/queries/incremental_sum/incremental_sum.h \
+	web/api/queries/max/max.c web/api/queries/max/max.h \
+	web/api/queries/median/median.c \
+	web/api/queries/median/median.h web/api/queries/min/min.c \
+	web/api/queries/min/min.h web/api/queries/query.c \
+	web/api/queries/query.h web/api/queries/rrdr.c \
+	web/api/queries/rrdr.h web/api/queries/ses/ses.c \
+	web/api/queries/ses/ses.h web/api/queries/stddev/stddev.c \
+	web/api/queries/stddev/stddev.h web/api/queries/sum/sum.c \
+	web/api/queries/sum/sum.h web/api/formatters/rrd2json.c \
+	web/api/formatters/rrd2json.h web/api/formatters/csv/csv.c \
+	web/api/formatters/csv/csv.h web/api/formatters/json/json.c \
+	web/api/formatters/json/json.h web/api/formatters/ssv/ssv.c \
+	web/api/formatters/ssv/ssv.h web/api/formatters/value/value.c \
+	web/api/formatters/value/value.h \
+	web/api/formatters/json_wrapper.c \
+	web/api/formatters/json_wrapper.h \
+	web/api/formatters/charts2json.c \
+	web/api/formatters/charts2json.h \
+	web/api/formatters/rrdset2json.c \
+	web/api/formatters/rrdset2json.h web/api/web_api_v1.c \
+	web/api/web_api_v1.h backends/backends.c backends/backends.h \
+	backends/graphite/graphite.c backends/graphite/graphite.h \
+	backends/json/json.c backends/json/json.h \
+	backends/opentsdb/opentsdb.c backends/opentsdb/opentsdb.h \
+	backends/prometheus/backend_prometheus.c \
+	backends/prometheus/backend_prometheus.h \
+	collectors/checks.plugin/plugin_checks.c \
+	collectors/checks.plugin/plugin_checks.h health/health.c \
+	health/health.h health/health_config.c health/health_json.c \
+	health/health_log.c \
+	collectors/idlejitter.plugin/plugin_idlejitter.c \
+	collectors/idlejitter.plugin/plugin_idlejitter.h \
+	collectors/plugins.d/plugins_d.c \
+	collectors/plugins.d/plugins_d.h registry/registry.c \
+	registry/registry.h registry/registry_db.c \
+	registry/registry_init.c registry/registry_internals.c \
+	registry/registry_internals.h registry/registry_log.c \
+	registry/registry_machine.c registry/registry_machine.h \
+	registry/registry_person.c registry/registry_person.h \
+	registry/registry_url.c registry/registry_url.h \
+	database/rrdcalc.c database/rrdcalc.h \
+	database/rrdcalctemplate.c database/rrdcalctemplate.h \
+	database/rrddim.c database/rrddimvar.c database/rrddimvar.h \
+	database/rrdfamily.c database/rrdhost.c database/rrd.c \
+	database/rrd.h database/rrdset.c database/rrdsetvar.c \
+	database/rrdsetvar.h database/rrdvar.c database/rrdvar.h \
+	streaming/rrdpush.c streaming/rrdpush.h \
+	collectors/statsd.plugin/statsd.c \
+	collectors/statsd.plugin/statsd.h web/server/web_client.c \
+	web/server/web_client.h web/server/web_server.c \
+	web/server/web_server.h web/server/web_client_cache.c \
+	web/server/web_client_cache.h \
+	web/server/single/single-threaded.c \
+	web/server/single/single-threaded.h \
+	web/server/multi/multi-threaded.c \
+	web/server/multi/multi-threaded.h \
+	web/server/static/static-threaded.c \
+	web/server/static/static-threaded.h \
+	collectors/freebsd.plugin/plugin_freebsd.c \
+	collectors/freebsd.plugin/plugin_freebsd.h \
+	collectors/freebsd.plugin/freebsd_sysctl.c \
+	collectors/freebsd.plugin/freebsd_getmntinfo.c \
+	collectors/freebsd.plugin/freebsd_getifaddrs.c \
+	collectors/freebsd.plugin/freebsd_devstat.c \
+	collectors/freebsd.plugin/freebsd_kstat_zfs.c \
+	collectors/freebsd.plugin/freebsd_ipfw.c \
+	collectors/proc.plugin/zfs_common.c \
+	collectors/proc.plugin/zfs_common.h \
+	collectors/macos.plugin/plugin_macos.c \
+	collectors/macos.plugin/plugin_macos.h \
+	collectors/macos.plugin/macos_sysctl.c \
+	collectors/macos.plugin/macos_mach_smi.c \
+	collectors/macos.plugin/macos_fw.c \
+	collectors/cgroups.plugin/sys_fs_cgroup.c \
+	collectors/cgroups.plugin/sys_fs_cgroup.h \
+	collectors/diskspace.plugin/plugin_diskspace.h \
+	collectors/diskspace.plugin/plugin_diskspace.c \
+	collectors/nfacct.plugin/plugin_nfacct.c \
+	collectors/nfacct.plugin/plugin_nfacct.h \
+	collectors/proc.plugin/ipc.c \
+	collectors/proc.plugin/plugin_proc.c \
+	collectors/proc.plugin/plugin_proc.h \
+	collectors/proc.plugin/proc_diskstats.c \
+	collectors/proc.plugin/proc_interrupts.c \
+	collectors/proc.plugin/proc_softirqs.c \
+	collectors/proc.plugin/proc_loadavg.c \
+	collectors/proc.plugin/proc_meminfo.c \
+	collectors/proc.plugin/proc_net_dev.c \
+	collectors/proc.plugin/proc_net_ip_vs_stats.c \
+	collectors/proc.plugin/proc_net_netstat.c \
+	collectors/proc.plugin/proc_net_rpc_nfs.c \
+	collectors/proc.plugin/proc_net_rpc_nfsd.c \
+	collectors/proc.plugin/proc_net_snmp.c \
+	collectors/proc.plugin/proc_net_snmp6.c \
+	collectors/proc.plugin/proc_net_sctp_snmp.c \
+	collectors/proc.plugin/proc_net_sockstat.c \
+	collectors/proc.plugin/proc_net_sockstat6.c \
+	collectors/proc.plugin/proc_net_softnet_stat.c \
+	collectors/proc.plugin/proc_net_stat_conntrack.c \
+	collectors/proc.plugin/proc_net_stat_synproxy.c \
+	collectors/proc.plugin/proc_self_mountinfo.c \
+	collectors/proc.plugin/proc_self_mountinfo.h \
+	collectors/proc.plugin/proc_spl_kstat_zfs.c \
+	collectors/proc.plugin/proc_stat.c \
+	collectors/proc.plugin/proc_sys_kernel_random_entropy_avail.c \
+	collectors/proc.plugin/proc_vmstat.c \
+	collectors/proc.plugin/proc_uptime.c \
+	collectors/proc.plugin/sys_kernel_mm_ksm.c \
+	collectors/proc.plugin/sys_devices_system_edac_mc.c \
+	collectors/proc.plugin/sys_devices_system_node.c \
+	collectors/proc.plugin/sys_fs_btrfs.c \
+	collectors/tc.plugin/plugin_tc.c \
+	collectors/tc.plugin/plugin_tc.h
+am__objects_5 = daemon/common.$(OBJEXT) daemon/daemon.$(OBJEXT) \
+	daemon/global_statistics.$(OBJEXT) daemon/main.$(OBJEXT) \
+	daemon/signals.$(OBJEXT) daemon/unit_test.$(OBJEXT)
+am__objects_6 = web/api/badges/web_buffer_svg.$(OBJEXT) \
+	web/api/exporters/allmetrics.$(OBJEXT) \
+	web/api/exporters/shell/allmetrics_shell.$(OBJEXT) \
+	web/api/queries/average/average.$(OBJEXT) \
+	web/api/queries/des/des.$(OBJEXT) \
+	web/api/queries/incremental_sum/incremental_sum.$(OBJEXT) \
+	web/api/queries/max/max.$(OBJEXT) \
+	web/api/queries/median/median.$(OBJEXT) \
+	web/api/queries/min/min.$(OBJEXT) \
+	web/api/queries/query.$(OBJEXT) web/api/queries/rrdr.$(OBJEXT) \
+	web/api/queries/ses/ses.$(OBJEXT) \
+	web/api/queries/stddev/stddev.$(OBJEXT) \
+	web/api/queries/sum/sum.$(OBJEXT) \
+	web/api/formatters/rrd2json.$(OBJEXT) \
+	web/api/formatters/csv/csv.$(OBJEXT) \
+	web/api/formatters/json/json.$(OBJEXT) \
+	web/api/formatters/ssv/ssv.$(OBJEXT) \
+	web/api/formatters/value/value.$(OBJEXT) \
+	web/api/formatters/json_wrapper.$(OBJEXT) \
+	web/api/formatters/charts2json.$(OBJEXT) \
+	web/api/formatters/rrdset2json.$(OBJEXT) \
+	web/api/web_api_v1.$(OBJEXT)
+am__objects_7 = backends/backends.$(OBJEXT) \
+	backends/graphite/graphite.$(OBJEXT) \
+	backends/json/json.$(OBJEXT) \
+	backends/opentsdb/opentsdb.$(OBJEXT) \
+	backends/prometheus/backend_prometheus.$(OBJEXT)
+am__objects_8 = collectors/checks.plugin/plugin_checks.$(OBJEXT)
+am__objects_9 = health/health.$(OBJEXT) health/health_config.$(OBJEXT) \
+	health/health_json.$(OBJEXT) health/health_log.$(OBJEXT)
+am__objects_10 =  \
+	collectors/idlejitter.plugin/plugin_idlejitter.$(OBJEXT)
+am__objects_11 = collectors/plugins.d/plugins_d.$(OBJEXT)
+am__objects_12 = registry/registry.$(OBJEXT) \
+	registry/registry_db.$(OBJEXT) \
+	registry/registry_init.$(OBJEXT) \
+	registry/registry_internals.$(OBJEXT) \
+	registry/registry_log.$(OBJEXT) \
+	registry/registry_machine.$(OBJEXT) \
+	registry/registry_person.$(OBJEXT) \
+	registry/registry_url.$(OBJEXT)
+am__objects_13 = database/rrdcalc.$(OBJEXT) \
+	database/rrdcalctemplate.$(OBJEXT) database/rrddim.$(OBJEXT) \
+	database/rrddimvar.$(OBJEXT) database/rrdfamily.$(OBJEXT) \
+	database/rrdhost.$(OBJEXT) database/rrd.$(OBJEXT) \
+	database/rrdset.$(OBJEXT) database/rrdsetvar.$(OBJEXT) \
+	database/rrdvar.$(OBJEXT)
+am__objects_14 = streaming/rrdpush.$(OBJEXT)
+am__objects_15 = collectors/statsd.plugin/statsd.$(OBJEXT)
+am__objects_16 = web/server/web_client.$(OBJEXT) \
+	web/server/web_server.$(OBJEXT) \
+	web/server/web_client_cache.$(OBJEXT) \
+	web/server/single/single-threaded.$(OBJEXT) \
+	web/server/multi/multi-threaded.$(OBJEXT) \
+	web/server/static/static-threaded.$(OBJEXT)
+am__objects_17 = collectors/freebsd.plugin/plugin_freebsd.$(OBJEXT) \
+	collectors/freebsd.plugin/freebsd_sysctl.$(OBJEXT) \
+	collectors/freebsd.plugin/freebsd_getmntinfo.$(OBJEXT) \
+	collectors/freebsd.plugin/freebsd_getifaddrs.$(OBJEXT) \
+	collectors/freebsd.plugin/freebsd_devstat.$(OBJEXT) \
+	collectors/freebsd.plugin/freebsd_kstat_zfs.$(OBJEXT) \
+	collectors/freebsd.plugin/freebsd_ipfw.$(OBJEXT) \
+	collectors/proc.plugin/zfs_common.$(OBJEXT)
+@FREEBSD_TRUE@am__objects_18 = $(am__objects_17)
+am__objects_19 = collectors/macos.plugin/plugin_macos.$(OBJEXT) \
+	collectors/macos.plugin/macos_sysctl.$(OBJEXT) \
+	collectors/macos.plugin/macos_mach_smi.$(OBJEXT) \
+	collectors/macos.plugin/macos_fw.$(OBJEXT)
+@MACOS_TRUE@am__objects_20 = $(am__objects_19)
+am__objects_21 = collectors/cgroups.plugin/sys_fs_cgroup.$(OBJEXT)
+am__objects_22 =  \
+	collectors/diskspace.plugin/plugin_diskspace.$(OBJEXT)
+am__objects_23 = collectors/nfacct.plugin/plugin_nfacct.$(OBJEXT)
+am__objects_24 = collectors/proc.plugin/ipc.$(OBJEXT) \
+	collectors/proc.plugin/plugin_proc.$(OBJEXT) \
+	collectors/proc.plugin/proc_diskstats.$(OBJEXT) \
+	collectors/proc.plugin/proc_interrupts.$(OBJEXT) \
+	collectors/proc.plugin/proc_softirqs.$(OBJEXT) \
+	collectors/proc.plugin/proc_loadavg.$(OBJEXT) \
+	collectors/proc.plugin/proc_meminfo.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_dev.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_ip_vs_stats.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_netstat.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_rpc_nfs.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_rpc_nfsd.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_snmp.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_snmp6.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_sctp_snmp.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_sockstat.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_sockstat6.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_softnet_stat.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_stat_conntrack.$(OBJEXT) \
+	collectors/proc.plugin/proc_net_stat_synproxy.$(OBJEXT) \
+	collectors/proc.plugin/proc_self_mountinfo.$(OBJEXT) \
+	collectors/proc.plugin/zfs_common.$(OBJEXT) \
+	collectors/proc.plugin/proc_spl_kstat_zfs.$(OBJEXT) \
+	collectors/proc.plugin/proc_stat.$(OBJEXT) \
+	collectors/proc.plugin/proc_sys_kernel_random_entropy_avail.$(OBJEXT) \
+	collectors/proc.plugin/proc_vmstat.$(OBJEXT) \
+	collectors/proc.plugin/proc_uptime.$(OBJEXT) \
+	collectors/proc.plugin/sys_kernel_mm_ksm.$(OBJEXT) \
+	collectors/proc.plugin/sys_devices_system_edac_mc.$(OBJEXT) \
+	collectors/proc.plugin/sys_devices_system_node.$(OBJEXT) \
+	collectors/proc.plugin/sys_fs_btrfs.$(OBJEXT)
+am__objects_25 = collectors/tc.plugin/plugin_tc.$(OBJEXT)
+@LINUX_TRUE@am__objects_26 = $(am__objects_21) $(am__objects_22) \
+@LINUX_TRUE@	$(am__objects_23) $(am__objects_24) \
+@LINUX_TRUE@	$(am__objects_25)
+am__objects_27 = $(am__objects_5) $(am__objects_1) $(am__objects_6) \
+	$(am__objects_7) $(am__objects_8) $(am__objects_9) \
+	$(am__objects_10) $(am__objects_11) $(am__objects_12) \
+	$(am__objects_13) $(am__objects_14) $(am__objects_15) \
+	$(am__objects_16) $(am__objects_18) $(am__objects_20) \
+	$(am__objects_26)
+am_netdata_OBJECTS = $(am__objects_27)
+netdata_OBJECTS = $(am_netdata_OBJECTS)
+netdata_DEPENDENCIES = $(am__DEPENDENCIES_2) $(am__DEPENDENCIES_1)
 SCRIPTS = $(dist_noinst_SCRIPTS)
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
@@ -115,8 +542,28 @@ AM_V_at = $(am__v_at_@AM_V@)
 am__v_at_ = $(am__v_at_@AM_DEFAULT_V@)
 am__v_at_0 = @
 am__v_at_1 = 
-SOURCES =
-DIST_SOURCES =
+DEFAULT_INCLUDES = -I.@am__isrc@
+depcomp = $(SHELL) $(top_srcdir)/depcomp
+am__depfiles_maybe = depfiles
+am__mv = mv -f
+COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+AM_V_CC = $(am__v_CC_@AM_V@)
+am__v_CC_ = $(am__v_CC_@AM_DEFAULT_V@)
+am__v_CC_0 = @echo "  CC      " $@;
+am__v_CC_1 = 
+CCLD = $(CC)
+LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+AM_V_CCLD = $(am__v_CCLD_@AM_V@)
+am__v_CCLD_ = $(am__v_CCLD_@AM_DEFAULT_V@)
+am__v_CCLD_0 = @echo "  CCLD    " $@;
+am__v_CCLD_1 = 
+SOURCES = $(apps_plugin_SOURCES) $(cgroup_network_SOURCES) \
+	$(freeipmi_plugin_SOURCES) $(netdata_SOURCES)
+DIST_SOURCES = $(am__apps_plugin_SOURCES_DIST) \
+	$(am__cgroup_network_SOURCES_DIST) \
+	$(am__freeipmi_plugin_SOURCES_DIST) \
+	$(am__netdata_SOURCES_DIST)
 RECURSIVE_TARGETS = all-recursive check-recursive cscopelist-recursive \
 	ctags-recursive dvi-recursive html-recursive info-recursive \
 	install-data-recursive install-dvi-recursive \
@@ -130,7 +577,35 @@ am__can_run_installinfo = \
     n|no|NO) false;; \
     *) (install-info --version) >/dev/null 2>&1;; \
   esac
-DATA = $(dist_noinst_DATA)
+am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
+am__vpath_adj = case $$p in \
+    $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
+    *) f=$$p;; \
+  esac;
+am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`;
+am__install_max = 40
+am__nobase_strip_setup = \
+  srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'`
+am__nobase_strip = \
+  for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||"
+am__nobase_list = $(am__nobase_strip_setup); \
+  for p in $$list; do echo "$$p $$p"; done | \
+  sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \
+  $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \
+    if (++n[$$2] == $(am__install_max)) \
+      { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \
+    END { for (dir in files) print dir, files[dir] }'
+am__base_list = \
+  sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
+  sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g'
+am__uninstall_files_from_dir = { \
+  test -z "$$files" \
+    || { test ! -d "$$dir" && test ! -f "$$dir" && test ! -r "$$dir"; } \
+    || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
+         $(am__cd) "$$dir" && rm -f $$files; }; \
+  }
+DATA = $(dist_cache_DATA) $(dist_log_DATA) $(dist_noinst_DATA) \
+	$(dist_registry_DATA) $(dist_varlib_DATA)
 RECURSIVE_CLEAN_TARGETS = mostlyclean-recursive clean-recursive	\
   distclean-recursive maintainer-clean-recursive
 am__recursive_targets = \
@@ -196,9 +671,9 @@ am__relativize = \
     dir1=`echo "$$dir1" | sed -e "$$sed_rest"`; \
   done; \
   reldir="$$dir2"
-DIST_ARCHIVES = $(distdir).tar.gz $(distdir).tar.bz2 $(distdir).tar.xz
+DIST_ARCHIVES = $(distdir).tar.gz
 GZIP_ENV = --best
-DIST_TARGETS = dist-xz dist-bzip2 dist-gzip
+DIST_TARGETS = dist-gzip
 distuninstallcheck_listfiles = find . -type f -print
 am__distuninstallcheck_listfiles = $(distuninstallcheck_listfiles) \
   | sed 's|^\./|$(prefix)/|' | grep -v '$(infodir)/dir$$'
@@ -300,6 +775,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -321,6 +797,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
@@ -347,12 +824,8 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 varlibdir = @varlibdir@
 webdir = @webdir@
-
-#
-# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
-#
-AUTOMAKE_OPTIONS = foreign dist-bzip2 dist-xz 1.10
-ACLOCAL_AMFLAGS = -I m4
+AUTOMAKE_OPTIONS = foreign subdir-objects 1.10
+ACLOCAL_AMFLAGS = -I build/m4
 MAINTAINERCLEANFILES = \
 	config.log config.status \
 	$(srcdir)/Makefile.in \
@@ -372,50 +845,40 @@ EXTRA_DIST = \
 	.csslintrc \
 	.eslintignore \
 	.eslintrc \
+	.lgtm.yml \
 	.travis \
-	m4/jemalloc.m4 \
-    m4/ax_c___atomic.m4 \
-    m4/ax_check_enable_debug.m4 \
-    m4/ax_c_mallinfo.m4 \
-    m4/ax_gcc_func_attribute.m4 \
-    m4/ax_check_compile_flag.m4 \
-    m4/ax_c_statement_expressions.m4 \
-    m4/ax_pthread.m4 \
-    m4/ax_c_lto.m4 \
-    m4/ax_c_mallopt.m4 \
-    m4/tcmalloc.m4 \
-    m4/ax_c__generic.m4 \
-	autogen.sh \
+	.github/CODEOWNERS \
+	build/build.sh \
+	build/Dockerfile \
+	build/m4/jemalloc.m4 \
+	build/m4/ax_c___atomic.m4 \
+	build/m4/ax_check_enable_debug.m4 \
+	build/m4/ax_c_mallinfo.m4 \
+	build/m4/ax_gcc_func_attribute.m4 \
+	build/m4/ax_check_compile_flag.m4 \
+	build/m4/ax_c_statement_expressions.m4 \
+	build/m4/ax_pthread.m4 \
+	build/m4/ax_c_lto.m4 \
+	build/m4/ax_c_mallopt.m4 \
+	build/m4/tcmalloc.m4 \
+	build/m4/ax_c__generic.m4 \
 	README.md \
+	CONTRIBUTORS.md \
+	CODE_OF_CONDUCT.md \
 	LICENSE \
-	LICENSE.md \
-	LICENSE-REDISTRIBUTED.md \
-	COPYING \
-	autogen.sh \
+	REDISTRIBUTED.md \
 	$(NULL)
 
-SUBDIRS = \
-	charts.d \
-	conf.d \
-	diagrams \
-	makeself \
-	node.d \
-	plugins.d \
-	python.d \
-	src \
-	system \
-	web \
-	contrib \
-	tests \
-	$(NULL)
 
+# -----------------------------------------------------------------------------
+# Compile netdata binaries
+SUBDIRS = diagrams makeself system contrib tests $(NULL) backends \
+	collectors daemon database health libnetdata registry \
+	streaming web $(NULL)
 dist_noinst_DATA = \
 	cppcheck.sh \
 	configs.signatures \
-	Dockerfile \
-	Dockerfile.alpine \
-	Dockerfile.aarch64 \
-	Dockerfile.armv7hf \
+	docker \
 	netdata.cppcheck \
 	netdata.spec \
 	package.json \
@@ -426,17 +889,362 @@ dist_noinst_DATA = \
 # should be proper init.d/openrc/systemd usable
 dist_noinst_SCRIPTS = \
 	coverity-scan.sh \
-	docker-build.sh \
 	kickstart.sh \
 	kickstart-static64.sh \
 	netdata-installer.sh \
 	installer/functions.sh \
 	$(NULL)
 
+AM_CFLAGS = \
+	$(OPTIONAL_MATH_CFLAGS) \
+	$(OPTIONAL_NFACCT_CLFAGS) \
+	$(OPTIONAL_ZLIB_CFLAGS) \
+	$(OPTIONAL_UUID_CFLAGS) \
+	$(OPTIONAL_LIBCAP_LIBS) \
+	$(OPTIONAL_IPMIMONITORING_CFLAGS) \
+	$(NULL)
+
+dist_cache_DATA = installer/.keep
+dist_varlib_DATA = installer/.keep
+dist_registry_DATA = installer/.keep
+dist_log_DATA = installer/.keep
+LIBNETDATA_FILES = \
+    libnetdata/adaptive_resortable_list/adaptive_resortable_list.c \
+    libnetdata/adaptive_resortable_list/adaptive_resortable_list.h \
+    libnetdata/config/appconfig.c \
+    libnetdata/config/appconfig.h \
+    libnetdata/avl/avl.c \
+    libnetdata/avl/avl.h \
+    libnetdata/buffer/buffer.c \
+    libnetdata/buffer/buffer.h \
+    libnetdata/clocks/clocks.c \
+    libnetdata/clocks/clocks.h \
+    libnetdata/dictionary/dictionary.c \
+    libnetdata/dictionary/dictionary.h \
+    libnetdata/eval/eval.c \
+    libnetdata/eval/eval.h \
+    libnetdata/inlined.h \
+    libnetdata/libnetdata.c \
+    libnetdata/libnetdata.h \
+    libnetdata/locks/locks.c \
+    libnetdata/locks/locks.h \
+    libnetdata/log/log.c \
+    libnetdata/log/log.h \
+    libnetdata/popen/popen.c \
+    libnetdata/popen/popen.h \
+    libnetdata/procfile/procfile.c \
+    libnetdata/procfile/procfile.h \
+    libnetdata/os.c \
+    libnetdata/os.h \
+    libnetdata/simple_pattern/simple_pattern.c \
+    libnetdata/simple_pattern/simple_pattern.h \
+    libnetdata/socket/socket.c \
+    libnetdata/socket/socket.h \
+    libnetdata/statistical/statistical.c \
+    libnetdata/statistical/statistical.h \
+    libnetdata/storage_number/storage_number.c \
+    libnetdata/storage_number/storage_number.h \
+    libnetdata/threads/threads.c \
+    libnetdata/threads/threads.h \
+	libnetdata/url/url.c \
+	libnetdata/url/url.h \
+    $(NULL)
+
+APPS_PLUGIN_FILES = \
+	collectors/apps.plugin/apps_plugin.c \
+	$(LIBNETDATA_FILES) \
+    $(NULL)
+
+CHECKS_PLUGIN_FILES = \
+    collectors/checks.plugin/plugin_checks.c \
+    collectors/checks.plugin/plugin_checks.h \
+    $(NULL)
+
+FREEBSD_PLUGIN_FILES = \
+	collectors/freebsd.plugin/plugin_freebsd.c \
+	collectors/freebsd.plugin/plugin_freebsd.h \
+	collectors/freebsd.plugin/freebsd_sysctl.c \
+	collectors/freebsd.plugin/freebsd_getmntinfo.c \
+	collectors/freebsd.plugin/freebsd_getifaddrs.c \
+	collectors/freebsd.plugin/freebsd_devstat.c \
+	collectors/freebsd.plugin/freebsd_kstat_zfs.c \
+	collectors/freebsd.plugin/freebsd_ipfw.c \
+	collectors/proc.plugin/zfs_common.c \
+	collectors/proc.plugin/zfs_common.h \
+    $(NULL)
+
+HEALTH_PLUGIN_FILES = \
+	health/health.c \
+	health/health.h \
+	health/health_config.c \
+	health/health_json.c \
+	health/health_log.c \
+    $(NULL)
+
+IDLEJITTER_PLUGIN_FILES = \
+	collectors/idlejitter.plugin/plugin_idlejitter.c \
+	collectors/idlejitter.plugin/plugin_idlejitter.h \
+    $(NULL)
+
+CGROUPS_PLUGIN_FILES = \
+    collectors/cgroups.plugin/sys_fs_cgroup.c \
+    collectors/cgroups.plugin/sys_fs_cgroup.h \
+    $(NULL)
+
+CGROUP_NETWORK_FILES = \
+    collectors/cgroups.plugin/cgroup-network.c \
+    $(LIBNETDATA_FILES) \
+    $(NULL)
+
+DISKSPACE_PLUGIN_FILES = \
+    collectors/diskspace.plugin/plugin_diskspace.h \
+    collectors/diskspace.plugin/plugin_diskspace.c \
+    $(NULL)
+
+FREEIPMI_PLUGIN_FILES = \
+    collectors/freeipmi.plugin/freeipmi_plugin.c \
+    $(LIBNETDATA_FILES) \
+    $(NULL)
+
+NFACCT_PLUGIN_FILES = \
+	collectors/nfacct.plugin/plugin_nfacct.c \
+	collectors/nfacct.plugin/plugin_nfacct.h \
+    $(NULL)
+
+PROC_PLUGIN_FILES = \
+	collectors/proc.plugin/ipc.c \
+	collectors/proc.plugin/plugin_proc.c \
+	collectors/proc.plugin/plugin_proc.h \
+	collectors/proc.plugin/proc_diskstats.c \
+	collectors/proc.plugin/proc_interrupts.c \
+	collectors/proc.plugin/proc_softirqs.c \
+	collectors/proc.plugin/proc_loadavg.c \
+	collectors/proc.plugin/proc_meminfo.c \
+	collectors/proc.plugin/proc_net_dev.c \
+	collectors/proc.plugin/proc_net_ip_vs_stats.c \
+	collectors/proc.plugin/proc_net_netstat.c \
+	collectors/proc.plugin/proc_net_rpc_nfs.c \
+	collectors/proc.plugin/proc_net_rpc_nfsd.c \
+	collectors/proc.plugin/proc_net_snmp.c \
+	collectors/proc.plugin/proc_net_snmp6.c \
+	collectors/proc.plugin/proc_net_sctp_snmp.c \
+	collectors/proc.plugin/proc_net_sockstat.c \
+	collectors/proc.plugin/proc_net_sockstat6.c \
+	collectors/proc.plugin/proc_net_softnet_stat.c \
+	collectors/proc.plugin/proc_net_stat_conntrack.c \
+	collectors/proc.plugin/proc_net_stat_synproxy.c \
+	collectors/proc.plugin/proc_self_mountinfo.c \
+	collectors/proc.plugin/proc_self_mountinfo.h \
+	collectors/proc.plugin/zfs_common.c \
+	collectors/proc.plugin/zfs_common.h \
+	collectors/proc.plugin/proc_spl_kstat_zfs.c \
+	collectors/proc.plugin/proc_stat.c \
+	collectors/proc.plugin/proc_sys_kernel_random_entropy_avail.c \
+	collectors/proc.plugin/proc_vmstat.c \
+	collectors/proc.plugin/proc_uptime.c \
+	collectors/proc.plugin/sys_kernel_mm_ksm.c \
+	collectors/proc.plugin/sys_devices_system_edac_mc.c \
+	collectors/proc.plugin/sys_devices_system_node.c \
+	collectors/proc.plugin/sys_fs_btrfs.c \
+    $(NULL)
+
+TC_PLUGIN_FILES = \
+	collectors/tc.plugin/plugin_tc.c \
+	collectors/tc.plugin/plugin_tc.h \
+    $(NULL)
+
+MACOS_PLUGIN_FILES = \
+	collectors/macos.plugin/plugin_macos.c \
+	collectors/macos.plugin/plugin_macos.h \
+	collectors/macos.plugin/macos_sysctl.c \
+	collectors/macos.plugin/macos_mach_smi.c \
+	collectors/macos.plugin/macos_fw.c \
+    $(NULL)
+
+PLUGINSD_PLUGIN_FILES = \
+	collectors/plugins.d/plugins_d.c \
+	collectors/plugins.d/plugins_d.h \
+    $(NULL)
+
+RRD_PLUGIN_FILES = \
+    database/rrdcalc.c \
+    database/rrdcalc.h \
+    database/rrdcalctemplate.c \
+    database/rrdcalctemplate.h \
+    database/rrddim.c \
+    database/rrddimvar.c \
+    database/rrddimvar.h \
+    database/rrdfamily.c \
+    database/rrdhost.c \
+    database/rrd.c \
+    database/rrd.h \
+    database/rrdset.c \
+    database/rrdsetvar.c \
+    database/rrdsetvar.h \
+    database/rrdvar.c \
+    database/rrdvar.h \
+    $(NULL)
+
+API_PLUGIN_FILES = \
+    web/api/badges/web_buffer_svg.c \
+    web/api/badges/web_buffer_svg.h \
+    web/api/exporters/allmetrics.c \
+    web/api/exporters/allmetrics.h \
+    web/api/exporters/shell/allmetrics_shell.c \
+    web/api/exporters/shell/allmetrics_shell.h \
+    web/api/queries/average/average.c \
+    web/api/queries/average/average.h \
+    web/api/queries/des/des.c \
+    web/api/queries/des/des.h \
+    web/api/queries/incremental_sum/incremental_sum.c \
+    web/api/queries/incremental_sum/incremental_sum.h \
+    web/api/queries/max/max.c \
+    web/api/queries/max/max.h \
+    web/api/queries/median/median.c \
+    web/api/queries/median/median.h \
+    web/api/queries/min/min.c \
+    web/api/queries/min/min.h \
+    web/api/queries/query.c \
+    web/api/queries/query.h \
+    web/api/queries/rrdr.c \
+    web/api/queries/rrdr.h \
+    web/api/queries/ses/ses.c \
+    web/api/queries/ses/ses.h \
+    web/api/queries/stddev/stddev.c \
+    web/api/queries/stddev/stddev.h \
+    web/api/queries/sum/sum.c \
+    web/api/queries/sum/sum.h \
+    web/api/formatters/rrd2json.c \
+    web/api/formatters/rrd2json.h \
+    web/api/formatters/csv/csv.c \
+    web/api/formatters/csv/csv.h \
+    web/api/formatters/json/json.c \
+    web/api/formatters/json/json.h \
+    web/api/formatters/ssv/ssv.c \
+    web/api/formatters/ssv/ssv.h \
+    web/api/formatters/value/value.c \
+    web/api/formatters/value/value.h \
+    web/api/formatters/json_wrapper.c \
+    web/api/formatters/json_wrapper.h \
+    web/api/formatters/charts2json.c \
+    web/api/formatters/charts2json.h \
+    web/api/formatters/rrdset2json.c \
+    web/api/formatters/rrdset2json.h \
+    web/api/web_api_v1.c \
+    web/api/web_api_v1.h \
+    $(NULL)
+
+STREAMING_PLUGIN_FILES = \
+    streaming/rrdpush.c \
+    streaming/rrdpush.h \
+    $(NULL)
+
+REGISTRY_PLUGIN_FILES = \
+	registry/registry.c \
+	registry/registry.h \
+	registry/registry_db.c \
+	registry/registry_init.c \
+	registry/registry_internals.c \
+	registry/registry_internals.h \
+	registry/registry_log.c \
+	registry/registry_machine.c \
+	registry/registry_machine.h \
+	registry/registry_person.c \
+	registry/registry_person.h \
+	registry/registry_url.c \
+	registry/registry_url.h \
+    $(NULL)
+
+STATSD_PLUGIN_FILES = \
+	collectors/statsd.plugin/statsd.c \
+	collectors/statsd.plugin/statsd.h \
+    $(NULL)
+
+WEB_PLUGIN_FILES = \
+    web/server/web_client.c \
+    web/server/web_client.h \
+    web/server/web_server.c \
+    web/server/web_server.h \
+    web/server/web_client_cache.c \
+    web/server/web_client_cache.h \
+    web/server/single/single-threaded.c \
+    web/server/single/single-threaded.h \
+    web/server/multi/multi-threaded.c \
+    web/server/multi/multi-threaded.h \
+    web/server/static/static-threaded.c \
+    web/server/static/static-threaded.h \
+    $(NULL)
+
+BACKENDS_PLUGIN_FILES = \
+    backends/backends.c \
+    backends/backends.h \
+    backends/graphite/graphite.c \
+    backends/graphite/graphite.h \
+    backends/json/json.c \
+    backends/json/json.h \
+    backends/opentsdb/opentsdb.c \
+    backends/opentsdb/opentsdb.h \
+    backends/prometheus/backend_prometheus.c \
+    backends/prometheus/backend_prometheus.h \
+    $(NULL)
+
+DAEMON_FILES = \
+	daemon/common.c \
+	daemon/common.h \
+	daemon/daemon.c \
+	daemon/daemon.h \
+	daemon/global_statistics.c \
+	daemon/global_statistics.h \
+	daemon/main.c \
+	daemon/main.h \
+	daemon/signals.c \
+	daemon/signals.h \
+	daemon/unit_test.c \
+	daemon/unit_test.h \
+    $(NULL)
+
+NETDATA_FILES = collectors/all.h $(DAEMON_FILES) $(LIBNETDATA_FILES) \
+	$(API_PLUGIN_FILES) $(BACKENDS_PLUGIN_FILES) \
+	$(CHECKS_PLUGIN_FILES) $(HEALTH_PLUGIN_FILES) \
+	$(IDLEJITTER_PLUGIN_FILES) $(PLUGINSD_PLUGIN_FILES) \
+	$(REGISTRY_PLUGIN_FILES) $(RRD_PLUGIN_FILES) \
+	$(STREAMING_PLUGIN_FILES) $(STATSD_PLUGIN_FILES) \
+	$(WEB_PLUGIN_FILES) $(NULL) $(am__append_1) $(am__append_2) \
+	$(am__append_3)
+NETDATA_COMMON_LIBS = \
+	$(OPTIONAL_MATH_LIBS) \
+	$(OPTIONAL_ZLIB_LIBS) \
+	$(OPTIONAL_UUID_LIBS) \
+	$(NULL)
+
+netdata_SOURCES = $(NETDATA_FILES)
+netdata_LDADD = \
+	$(NETDATA_COMMON_LIBS) \
+	$(OPTIONAL_NFACCT_LIBS) \
+	$(NULL)
+
+@ENABLE_PLUGIN_APPS_TRUE@apps_plugin_SOURCES = $(APPS_PLUGIN_FILES)
+@ENABLE_PLUGIN_APPS_TRUE@apps_plugin_LDADD = \
+@ENABLE_PLUGIN_APPS_TRUE@    	$(NETDATA_COMMON_LIBS) \
+@ENABLE_PLUGIN_APPS_TRUE@        $(OPTIONAL_LIBCAP_LIBS) \
+@ENABLE_PLUGIN_APPS_TRUE@        $(NULL)
+
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@cgroup_network_SOURCES = $(CGROUP_NETWORK_FILES)
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@cgroup_network_LDADD = \
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@    	$(NETDATA_COMMON_LIBS) \
+@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@        $(NULL)
+
+@ENABLE_PLUGIN_FREEIPMI_TRUE@freeipmi_plugin_SOURCES = $(FREEIPMI_PLUGIN_FILES)
+@ENABLE_PLUGIN_FREEIPMI_TRUE@freeipmi_plugin_LDADD = \
+@ENABLE_PLUGIN_FREEIPMI_TRUE@    	$(NETDATA_COMMON_LIBS) \
+@ENABLE_PLUGIN_FREEIPMI_TRUE@        $(OPTIONAL_IPMIMONITORING_LIBS) \
+@ENABLE_PLUGIN_FREEIPMI_TRUE@        $(NULL)
+
 all: config.h
 	$(MAKE) $(AM_MAKEFLAGS) all-recursive
 
 .SUFFIXES:
+.SUFFIXES: .c .o .obj
 am--refresh: Makefile
 	@:
 $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
@@ -488,6 +1296,1153 @@ distclean-hdr:
 	-rm -f config.h stamp-h1
 netdata.spec: $(top_builddir)/config.status $(srcdir)/netdata.spec.in
 	cd $(top_builddir) && $(SHELL) ./config.status $@
+install-pluginsPROGRAMS: $(plugins_PROGRAMS)
+	@$(NORMAL_INSTALL)
+	@list='$(plugins_PROGRAMS)'; test -n "$(pluginsdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pluginsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pluginsdir)" || exit 1; \
+	fi; \
+	for p in $$list; do echo "$$p $$p"; done | \
+	sed 's/$(EXEEXT)$$//' | \
+	while read p p1; do if test -f $$p \
+	  ; then echo "$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n;h' \
+	    -e 's|.*|.|' \
+	    -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
+	sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) files[d] = files[d] " " $$1; \
+	    else { print "f", $$3 "/" $$4, $$1; } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	    if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	    test -z "$$files" || { \
+	      echo " $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files '$(DESTDIR)$(pluginsdir)$$dir'"; \
+	      $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files "$(DESTDIR)$(pluginsdir)$$dir" || exit $$?; \
+	    } \
+	; done
+
+uninstall-pluginsPROGRAMS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(plugins_PROGRAMS)'; test -n "$(pluginsdir)" || list=; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	  sed -e 'h;s,^.*/,,;s/$(EXEEXT)$$//;$(transform)' \
+	      -e 's/$$/$(EXEEXT)/' \
+	`; \
+	test -n "$$list" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(pluginsdir)' && rm -f" $$files ")"; \
+	cd "$(DESTDIR)$(pluginsdir)" && rm -f $$files
+
+clean-pluginsPROGRAMS:
+	-test -z "$(plugins_PROGRAMS)" || rm -f $(plugins_PROGRAMS)
+install-sbinPROGRAMS: $(sbin_PROGRAMS)
+	@$(NORMAL_INSTALL)
+	@list='$(sbin_PROGRAMS)'; test -n "$(sbindir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(sbindir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(sbindir)" || exit 1; \
+	fi; \
+	for p in $$list; do echo "$$p $$p"; done | \
+	sed 's/$(EXEEXT)$$//' | \
+	while read p p1; do if test -f $$p \
+	  ; then echo "$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n;h' \
+	    -e 's|.*|.|' \
+	    -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
+	sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) files[d] = files[d] " " $$1; \
+	    else { print "f", $$3 "/" $$4, $$1; } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	    if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	    test -z "$$files" || { \
+	      echo " $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files '$(DESTDIR)$(sbindir)$$dir'"; \
+	      $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files "$(DESTDIR)$(sbindir)$$dir" || exit $$?; \
+	    } \
+	; done
+
+uninstall-sbinPROGRAMS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(sbin_PROGRAMS)'; test -n "$(sbindir)" || list=; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	  sed -e 'h;s,^.*/,,;s/$(EXEEXT)$$//;$(transform)' \
+	      -e 's/$$/$(EXEEXT)/' \
+	`; \
+	test -n "$$list" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(sbindir)' && rm -f" $$files ")"; \
+	cd "$(DESTDIR)$(sbindir)" && rm -f $$files
+
+clean-sbinPROGRAMS:
+	-test -z "$(sbin_PROGRAMS)" || rm -f $(sbin_PROGRAMS)
+collectors/apps.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/apps.plugin
+	@: > collectors/apps.plugin/$(am__dirstamp)
+collectors/apps.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/apps.plugin/$(DEPDIR)
+	@: > collectors/apps.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/apps.plugin/apps_plugin.$(OBJEXT):  \
+	collectors/apps.plugin/$(am__dirstamp) \
+	collectors/apps.plugin/$(DEPDIR)/$(am__dirstamp)
+libnetdata/adaptive_resortable_list/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/adaptive_resortable_list
+	@: > libnetdata/adaptive_resortable_list/$(am__dirstamp)
+libnetdata/adaptive_resortable_list/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/adaptive_resortable_list/$(DEPDIR)
+	@: > libnetdata/adaptive_resortable_list/$(DEPDIR)/$(am__dirstamp)
+libnetdata/adaptive_resortable_list/adaptive_resortable_list.$(OBJEXT):  \
+	libnetdata/adaptive_resortable_list/$(am__dirstamp) \
+	libnetdata/adaptive_resortable_list/$(DEPDIR)/$(am__dirstamp)
+libnetdata/config/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/config
+	@: > libnetdata/config/$(am__dirstamp)
+libnetdata/config/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/config/$(DEPDIR)
+	@: > libnetdata/config/$(DEPDIR)/$(am__dirstamp)
+libnetdata/config/appconfig.$(OBJEXT):  \
+	libnetdata/config/$(am__dirstamp) \
+	libnetdata/config/$(DEPDIR)/$(am__dirstamp)
+libnetdata/avl/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/avl
+	@: > libnetdata/avl/$(am__dirstamp)
+libnetdata/avl/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/avl/$(DEPDIR)
+	@: > libnetdata/avl/$(DEPDIR)/$(am__dirstamp)
+libnetdata/avl/avl.$(OBJEXT): libnetdata/avl/$(am__dirstamp) \
+	libnetdata/avl/$(DEPDIR)/$(am__dirstamp)
+libnetdata/buffer/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/buffer
+	@: > libnetdata/buffer/$(am__dirstamp)
+libnetdata/buffer/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/buffer/$(DEPDIR)
+	@: > libnetdata/buffer/$(DEPDIR)/$(am__dirstamp)
+libnetdata/buffer/buffer.$(OBJEXT): libnetdata/buffer/$(am__dirstamp) \
+	libnetdata/buffer/$(DEPDIR)/$(am__dirstamp)
+libnetdata/clocks/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/clocks
+	@: > libnetdata/clocks/$(am__dirstamp)
+libnetdata/clocks/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/clocks/$(DEPDIR)
+	@: > libnetdata/clocks/$(DEPDIR)/$(am__dirstamp)
+libnetdata/clocks/clocks.$(OBJEXT): libnetdata/clocks/$(am__dirstamp) \
+	libnetdata/clocks/$(DEPDIR)/$(am__dirstamp)
+libnetdata/dictionary/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/dictionary
+	@: > libnetdata/dictionary/$(am__dirstamp)
+libnetdata/dictionary/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/dictionary/$(DEPDIR)
+	@: > libnetdata/dictionary/$(DEPDIR)/$(am__dirstamp)
+libnetdata/dictionary/dictionary.$(OBJEXT):  \
+	libnetdata/dictionary/$(am__dirstamp) \
+	libnetdata/dictionary/$(DEPDIR)/$(am__dirstamp)
+libnetdata/eval/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/eval
+	@: > libnetdata/eval/$(am__dirstamp)
+libnetdata/eval/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/eval/$(DEPDIR)
+	@: > libnetdata/eval/$(DEPDIR)/$(am__dirstamp)
+libnetdata/eval/eval.$(OBJEXT): libnetdata/eval/$(am__dirstamp) \
+	libnetdata/eval/$(DEPDIR)/$(am__dirstamp)
+libnetdata/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata
+	@: > libnetdata/$(am__dirstamp)
+libnetdata/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/$(DEPDIR)
+	@: > libnetdata/$(DEPDIR)/$(am__dirstamp)
+libnetdata/libnetdata.$(OBJEXT): libnetdata/$(am__dirstamp) \
+	libnetdata/$(DEPDIR)/$(am__dirstamp)
+libnetdata/locks/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/locks
+	@: > libnetdata/locks/$(am__dirstamp)
+libnetdata/locks/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/locks/$(DEPDIR)
+	@: > libnetdata/locks/$(DEPDIR)/$(am__dirstamp)
+libnetdata/locks/locks.$(OBJEXT): libnetdata/locks/$(am__dirstamp) \
+	libnetdata/locks/$(DEPDIR)/$(am__dirstamp)
+libnetdata/log/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/log
+	@: > libnetdata/log/$(am__dirstamp)
+libnetdata/log/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/log/$(DEPDIR)
+	@: > libnetdata/log/$(DEPDIR)/$(am__dirstamp)
+libnetdata/log/log.$(OBJEXT): libnetdata/log/$(am__dirstamp) \
+	libnetdata/log/$(DEPDIR)/$(am__dirstamp)
+libnetdata/popen/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/popen
+	@: > libnetdata/popen/$(am__dirstamp)
+libnetdata/popen/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/popen/$(DEPDIR)
+	@: > libnetdata/popen/$(DEPDIR)/$(am__dirstamp)
+libnetdata/popen/popen.$(OBJEXT): libnetdata/popen/$(am__dirstamp) \
+	libnetdata/popen/$(DEPDIR)/$(am__dirstamp)
+libnetdata/procfile/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/procfile
+	@: > libnetdata/procfile/$(am__dirstamp)
+libnetdata/procfile/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/procfile/$(DEPDIR)
+	@: > libnetdata/procfile/$(DEPDIR)/$(am__dirstamp)
+libnetdata/procfile/procfile.$(OBJEXT):  \
+	libnetdata/procfile/$(am__dirstamp) \
+	libnetdata/procfile/$(DEPDIR)/$(am__dirstamp)
+libnetdata/os.$(OBJEXT): libnetdata/$(am__dirstamp) \
+	libnetdata/$(DEPDIR)/$(am__dirstamp)
+libnetdata/simple_pattern/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/simple_pattern
+	@: > libnetdata/simple_pattern/$(am__dirstamp)
+libnetdata/simple_pattern/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/simple_pattern/$(DEPDIR)
+	@: > libnetdata/simple_pattern/$(DEPDIR)/$(am__dirstamp)
+libnetdata/simple_pattern/simple_pattern.$(OBJEXT):  \
+	libnetdata/simple_pattern/$(am__dirstamp) \
+	libnetdata/simple_pattern/$(DEPDIR)/$(am__dirstamp)
+libnetdata/socket/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/socket
+	@: > libnetdata/socket/$(am__dirstamp)
+libnetdata/socket/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/socket/$(DEPDIR)
+	@: > libnetdata/socket/$(DEPDIR)/$(am__dirstamp)
+libnetdata/socket/socket.$(OBJEXT): libnetdata/socket/$(am__dirstamp) \
+	libnetdata/socket/$(DEPDIR)/$(am__dirstamp)
+libnetdata/statistical/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/statistical
+	@: > libnetdata/statistical/$(am__dirstamp)
+libnetdata/statistical/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/statistical/$(DEPDIR)
+	@: > libnetdata/statistical/$(DEPDIR)/$(am__dirstamp)
+libnetdata/statistical/statistical.$(OBJEXT):  \
+	libnetdata/statistical/$(am__dirstamp) \
+	libnetdata/statistical/$(DEPDIR)/$(am__dirstamp)
+libnetdata/storage_number/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/storage_number
+	@: > libnetdata/storage_number/$(am__dirstamp)
+libnetdata/storage_number/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/storage_number/$(DEPDIR)
+	@: > libnetdata/storage_number/$(DEPDIR)/$(am__dirstamp)
+libnetdata/storage_number/storage_number.$(OBJEXT):  \
+	libnetdata/storage_number/$(am__dirstamp) \
+	libnetdata/storage_number/$(DEPDIR)/$(am__dirstamp)
+libnetdata/threads/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/threads
+	@: > libnetdata/threads/$(am__dirstamp)
+libnetdata/threads/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/threads/$(DEPDIR)
+	@: > libnetdata/threads/$(DEPDIR)/$(am__dirstamp)
+libnetdata/threads/threads.$(OBJEXT):  \
+	libnetdata/threads/$(am__dirstamp) \
+	libnetdata/threads/$(DEPDIR)/$(am__dirstamp)
+libnetdata/url/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/url
+	@: > libnetdata/url/$(am__dirstamp)
+libnetdata/url/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) libnetdata/url/$(DEPDIR)
+	@: > libnetdata/url/$(DEPDIR)/$(am__dirstamp)
+libnetdata/url/url.$(OBJEXT): libnetdata/url/$(am__dirstamp) \
+	libnetdata/url/$(DEPDIR)/$(am__dirstamp)
+
+apps.plugin$(EXEEXT): $(apps_plugin_OBJECTS) $(apps_plugin_DEPENDENCIES) $(EXTRA_apps_plugin_DEPENDENCIES) 
+	@rm -f apps.plugin$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(apps_plugin_OBJECTS) $(apps_plugin_LDADD) $(LIBS)
+collectors/cgroups.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/cgroups.plugin
+	@: > collectors/cgroups.plugin/$(am__dirstamp)
+collectors/cgroups.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/cgroups.plugin/$(DEPDIR)
+	@: > collectors/cgroups.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/cgroups.plugin/cgroup-network.$(OBJEXT):  \
+	collectors/cgroups.plugin/$(am__dirstamp) \
+	collectors/cgroups.plugin/$(DEPDIR)/$(am__dirstamp)
+
+cgroup-network$(EXEEXT): $(cgroup_network_OBJECTS) $(cgroup_network_DEPENDENCIES) $(EXTRA_cgroup_network_DEPENDENCIES) 
+	@rm -f cgroup-network$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(cgroup_network_OBJECTS) $(cgroup_network_LDADD) $(LIBS)
+collectors/freeipmi.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/freeipmi.plugin
+	@: > collectors/freeipmi.plugin/$(am__dirstamp)
+collectors/freeipmi.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/freeipmi.plugin/$(DEPDIR)
+	@: > collectors/freeipmi.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/freeipmi.plugin/freeipmi_plugin.$(OBJEXT):  \
+	collectors/freeipmi.plugin/$(am__dirstamp) \
+	collectors/freeipmi.plugin/$(DEPDIR)/$(am__dirstamp)
+
+freeipmi.plugin$(EXEEXT): $(freeipmi_plugin_OBJECTS) $(freeipmi_plugin_DEPENDENCIES) $(EXTRA_freeipmi_plugin_DEPENDENCIES) 
+	@rm -f freeipmi.plugin$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(freeipmi_plugin_OBJECTS) $(freeipmi_plugin_LDADD) $(LIBS)
+daemon/$(am__dirstamp):
+	@$(MKDIR_P) daemon
+	@: > daemon/$(am__dirstamp)
+daemon/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) daemon/$(DEPDIR)
+	@: > daemon/$(DEPDIR)/$(am__dirstamp)
+daemon/common.$(OBJEXT): daemon/$(am__dirstamp) \
+	daemon/$(DEPDIR)/$(am__dirstamp)
+daemon/daemon.$(OBJEXT): daemon/$(am__dirstamp) \
+	daemon/$(DEPDIR)/$(am__dirstamp)
+daemon/global_statistics.$(OBJEXT): daemon/$(am__dirstamp) \
+	daemon/$(DEPDIR)/$(am__dirstamp)
+daemon/main.$(OBJEXT): daemon/$(am__dirstamp) \
+	daemon/$(DEPDIR)/$(am__dirstamp)
+daemon/signals.$(OBJEXT): daemon/$(am__dirstamp) \
+	daemon/$(DEPDIR)/$(am__dirstamp)
+daemon/unit_test.$(OBJEXT): daemon/$(am__dirstamp) \
+	daemon/$(DEPDIR)/$(am__dirstamp)
+web/api/badges/$(am__dirstamp):
+	@$(MKDIR_P) web/api/badges
+	@: > web/api/badges/$(am__dirstamp)
+web/api/badges/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/badges/$(DEPDIR)
+	@: > web/api/badges/$(DEPDIR)/$(am__dirstamp)
+web/api/badges/web_buffer_svg.$(OBJEXT):  \
+	web/api/badges/$(am__dirstamp) \
+	web/api/badges/$(DEPDIR)/$(am__dirstamp)
+web/api/exporters/$(am__dirstamp):
+	@$(MKDIR_P) web/api/exporters
+	@: > web/api/exporters/$(am__dirstamp)
+web/api/exporters/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/exporters/$(DEPDIR)
+	@: > web/api/exporters/$(DEPDIR)/$(am__dirstamp)
+web/api/exporters/allmetrics.$(OBJEXT):  \
+	web/api/exporters/$(am__dirstamp) \
+	web/api/exporters/$(DEPDIR)/$(am__dirstamp)
+web/api/exporters/shell/$(am__dirstamp):
+	@$(MKDIR_P) web/api/exporters/shell
+	@: > web/api/exporters/shell/$(am__dirstamp)
+web/api/exporters/shell/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/exporters/shell/$(DEPDIR)
+	@: > web/api/exporters/shell/$(DEPDIR)/$(am__dirstamp)
+web/api/exporters/shell/allmetrics_shell.$(OBJEXT):  \
+	web/api/exporters/shell/$(am__dirstamp) \
+	web/api/exporters/shell/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/average/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/average
+	@: > web/api/queries/average/$(am__dirstamp)
+web/api/queries/average/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/average/$(DEPDIR)
+	@: > web/api/queries/average/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/average/average.$(OBJEXT):  \
+	web/api/queries/average/$(am__dirstamp) \
+	web/api/queries/average/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/des/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/des
+	@: > web/api/queries/des/$(am__dirstamp)
+web/api/queries/des/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/des/$(DEPDIR)
+	@: > web/api/queries/des/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/des/des.$(OBJEXT):  \
+	web/api/queries/des/$(am__dirstamp) \
+	web/api/queries/des/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/incremental_sum/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/incremental_sum
+	@: > web/api/queries/incremental_sum/$(am__dirstamp)
+web/api/queries/incremental_sum/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/incremental_sum/$(DEPDIR)
+	@: > web/api/queries/incremental_sum/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/incremental_sum/incremental_sum.$(OBJEXT):  \
+	web/api/queries/incremental_sum/$(am__dirstamp) \
+	web/api/queries/incremental_sum/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/max/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/max
+	@: > web/api/queries/max/$(am__dirstamp)
+web/api/queries/max/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/max/$(DEPDIR)
+	@: > web/api/queries/max/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/max/max.$(OBJEXT):  \
+	web/api/queries/max/$(am__dirstamp) \
+	web/api/queries/max/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/median/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/median
+	@: > web/api/queries/median/$(am__dirstamp)
+web/api/queries/median/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/median/$(DEPDIR)
+	@: > web/api/queries/median/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/median/median.$(OBJEXT):  \
+	web/api/queries/median/$(am__dirstamp) \
+	web/api/queries/median/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/min/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/min
+	@: > web/api/queries/min/$(am__dirstamp)
+web/api/queries/min/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/min/$(DEPDIR)
+	@: > web/api/queries/min/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/min/min.$(OBJEXT):  \
+	web/api/queries/min/$(am__dirstamp) \
+	web/api/queries/min/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries
+	@: > web/api/queries/$(am__dirstamp)
+web/api/queries/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/$(DEPDIR)
+	@: > web/api/queries/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/query.$(OBJEXT): web/api/queries/$(am__dirstamp) \
+	web/api/queries/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/rrdr.$(OBJEXT): web/api/queries/$(am__dirstamp) \
+	web/api/queries/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/ses/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/ses
+	@: > web/api/queries/ses/$(am__dirstamp)
+web/api/queries/ses/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/ses/$(DEPDIR)
+	@: > web/api/queries/ses/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/ses/ses.$(OBJEXT):  \
+	web/api/queries/ses/$(am__dirstamp) \
+	web/api/queries/ses/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/stddev/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/stddev
+	@: > web/api/queries/stddev/$(am__dirstamp)
+web/api/queries/stddev/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/stddev/$(DEPDIR)
+	@: > web/api/queries/stddev/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/stddev/stddev.$(OBJEXT):  \
+	web/api/queries/stddev/$(am__dirstamp) \
+	web/api/queries/stddev/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/sum/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/sum
+	@: > web/api/queries/sum/$(am__dirstamp)
+web/api/queries/sum/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/queries/sum/$(DEPDIR)
+	@: > web/api/queries/sum/$(DEPDIR)/$(am__dirstamp)
+web/api/queries/sum/sum.$(OBJEXT):  \
+	web/api/queries/sum/$(am__dirstamp) \
+	web/api/queries/sum/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/$(am__dirstamp):
+	@$(MKDIR_P) web/api/formatters
+	@: > web/api/formatters/$(am__dirstamp)
+web/api/formatters/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/formatters/$(DEPDIR)
+	@: > web/api/formatters/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/rrd2json.$(OBJEXT):  \
+	web/api/formatters/$(am__dirstamp) \
+	web/api/formatters/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/csv/$(am__dirstamp):
+	@$(MKDIR_P) web/api/formatters/csv
+	@: > web/api/formatters/csv/$(am__dirstamp)
+web/api/formatters/csv/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/formatters/csv/$(DEPDIR)
+	@: > web/api/formatters/csv/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/csv/csv.$(OBJEXT):  \
+	web/api/formatters/csv/$(am__dirstamp) \
+	web/api/formatters/csv/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/json/$(am__dirstamp):
+	@$(MKDIR_P) web/api/formatters/json
+	@: > web/api/formatters/json/$(am__dirstamp)
+web/api/formatters/json/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/formatters/json/$(DEPDIR)
+	@: > web/api/formatters/json/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/json/json.$(OBJEXT):  \
+	web/api/formatters/json/$(am__dirstamp) \
+	web/api/formatters/json/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/ssv/$(am__dirstamp):
+	@$(MKDIR_P) web/api/formatters/ssv
+	@: > web/api/formatters/ssv/$(am__dirstamp)
+web/api/formatters/ssv/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/formatters/ssv/$(DEPDIR)
+	@: > web/api/formatters/ssv/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/ssv/ssv.$(OBJEXT):  \
+	web/api/formatters/ssv/$(am__dirstamp) \
+	web/api/formatters/ssv/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/value/$(am__dirstamp):
+	@$(MKDIR_P) web/api/formatters/value
+	@: > web/api/formatters/value/$(am__dirstamp)
+web/api/formatters/value/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/formatters/value/$(DEPDIR)
+	@: > web/api/formatters/value/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/value/value.$(OBJEXT):  \
+	web/api/formatters/value/$(am__dirstamp) \
+	web/api/formatters/value/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/json_wrapper.$(OBJEXT):  \
+	web/api/formatters/$(am__dirstamp) \
+	web/api/formatters/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/charts2json.$(OBJEXT):  \
+	web/api/formatters/$(am__dirstamp) \
+	web/api/formatters/$(DEPDIR)/$(am__dirstamp)
+web/api/formatters/rrdset2json.$(OBJEXT):  \
+	web/api/formatters/$(am__dirstamp) \
+	web/api/formatters/$(DEPDIR)/$(am__dirstamp)
+web/api/$(am__dirstamp):
+	@$(MKDIR_P) web/api
+	@: > web/api/$(am__dirstamp)
+web/api/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/api/$(DEPDIR)
+	@: > web/api/$(DEPDIR)/$(am__dirstamp)
+web/api/web_api_v1.$(OBJEXT): web/api/$(am__dirstamp) \
+	web/api/$(DEPDIR)/$(am__dirstamp)
+backends/$(am__dirstamp):
+	@$(MKDIR_P) backends
+	@: > backends/$(am__dirstamp)
+backends/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) backends/$(DEPDIR)
+	@: > backends/$(DEPDIR)/$(am__dirstamp)
+backends/backends.$(OBJEXT): backends/$(am__dirstamp) \
+	backends/$(DEPDIR)/$(am__dirstamp)
+backends/graphite/$(am__dirstamp):
+	@$(MKDIR_P) backends/graphite
+	@: > backends/graphite/$(am__dirstamp)
+backends/graphite/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) backends/graphite/$(DEPDIR)
+	@: > backends/graphite/$(DEPDIR)/$(am__dirstamp)
+backends/graphite/graphite.$(OBJEXT):  \
+	backends/graphite/$(am__dirstamp) \
+	backends/graphite/$(DEPDIR)/$(am__dirstamp)
+backends/json/$(am__dirstamp):
+	@$(MKDIR_P) backends/json
+	@: > backends/json/$(am__dirstamp)
+backends/json/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) backends/json/$(DEPDIR)
+	@: > backends/json/$(DEPDIR)/$(am__dirstamp)
+backends/json/json.$(OBJEXT): backends/json/$(am__dirstamp) \
+	backends/json/$(DEPDIR)/$(am__dirstamp)
+backends/opentsdb/$(am__dirstamp):
+	@$(MKDIR_P) backends/opentsdb
+	@: > backends/opentsdb/$(am__dirstamp)
+backends/opentsdb/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) backends/opentsdb/$(DEPDIR)
+	@: > backends/opentsdb/$(DEPDIR)/$(am__dirstamp)
+backends/opentsdb/opentsdb.$(OBJEXT):  \
+	backends/opentsdb/$(am__dirstamp) \
+	backends/opentsdb/$(DEPDIR)/$(am__dirstamp)
+backends/prometheus/$(am__dirstamp):
+	@$(MKDIR_P) backends/prometheus
+	@: > backends/prometheus/$(am__dirstamp)
+backends/prometheus/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) backends/prometheus/$(DEPDIR)
+	@: > backends/prometheus/$(DEPDIR)/$(am__dirstamp)
+backends/prometheus/backend_prometheus.$(OBJEXT):  \
+	backends/prometheus/$(am__dirstamp) \
+	backends/prometheus/$(DEPDIR)/$(am__dirstamp)
+collectors/checks.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/checks.plugin
+	@: > collectors/checks.plugin/$(am__dirstamp)
+collectors/checks.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/checks.plugin/$(DEPDIR)
+	@: > collectors/checks.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/checks.plugin/plugin_checks.$(OBJEXT):  \
+	collectors/checks.plugin/$(am__dirstamp) \
+	collectors/checks.plugin/$(DEPDIR)/$(am__dirstamp)
+health/$(am__dirstamp):
+	@$(MKDIR_P) health
+	@: > health/$(am__dirstamp)
+health/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) health/$(DEPDIR)
+	@: > health/$(DEPDIR)/$(am__dirstamp)
+health/health.$(OBJEXT): health/$(am__dirstamp) \
+	health/$(DEPDIR)/$(am__dirstamp)
+health/health_config.$(OBJEXT): health/$(am__dirstamp) \
+	health/$(DEPDIR)/$(am__dirstamp)
+health/health_json.$(OBJEXT): health/$(am__dirstamp) \
+	health/$(DEPDIR)/$(am__dirstamp)
+health/health_log.$(OBJEXT): health/$(am__dirstamp) \
+	health/$(DEPDIR)/$(am__dirstamp)
+collectors/idlejitter.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/idlejitter.plugin
+	@: > collectors/idlejitter.plugin/$(am__dirstamp)
+collectors/idlejitter.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/idlejitter.plugin/$(DEPDIR)
+	@: > collectors/idlejitter.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/idlejitter.plugin/plugin_idlejitter.$(OBJEXT):  \
+	collectors/idlejitter.plugin/$(am__dirstamp) \
+	collectors/idlejitter.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/plugins.d/$(am__dirstamp):
+	@$(MKDIR_P) collectors/plugins.d
+	@: > collectors/plugins.d/$(am__dirstamp)
+collectors/plugins.d/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/plugins.d/$(DEPDIR)
+	@: > collectors/plugins.d/$(DEPDIR)/$(am__dirstamp)
+collectors/plugins.d/plugins_d.$(OBJEXT):  \
+	collectors/plugins.d/$(am__dirstamp) \
+	collectors/plugins.d/$(DEPDIR)/$(am__dirstamp)
+registry/$(am__dirstamp):
+	@$(MKDIR_P) registry
+	@: > registry/$(am__dirstamp)
+registry/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) registry/$(DEPDIR)
+	@: > registry/$(DEPDIR)/$(am__dirstamp)
+registry/registry.$(OBJEXT): registry/$(am__dirstamp) \
+	registry/$(DEPDIR)/$(am__dirstamp)
+registry/registry_db.$(OBJEXT): registry/$(am__dirstamp) \
+	registry/$(DEPDIR)/$(am__dirstamp)
+registry/registry_init.$(OBJEXT): registry/$(am__dirstamp) \
+	registry/$(DEPDIR)/$(am__dirstamp)
+registry/registry_internals.$(OBJEXT): registry/$(am__dirstamp) \
+	registry/$(DEPDIR)/$(am__dirstamp)
+registry/registry_log.$(OBJEXT): registry/$(am__dirstamp) \
+	registry/$(DEPDIR)/$(am__dirstamp)
+registry/registry_machine.$(OBJEXT): registry/$(am__dirstamp) \
+	registry/$(DEPDIR)/$(am__dirstamp)
+registry/registry_person.$(OBJEXT): registry/$(am__dirstamp) \
+	registry/$(DEPDIR)/$(am__dirstamp)
+registry/registry_url.$(OBJEXT): registry/$(am__dirstamp) \
+	registry/$(DEPDIR)/$(am__dirstamp)
+database/$(am__dirstamp):
+	@$(MKDIR_P) database
+	@: > database/$(am__dirstamp)
+database/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) database/$(DEPDIR)
+	@: > database/$(DEPDIR)/$(am__dirstamp)
+database/rrdcalc.$(OBJEXT): database/$(am__dirstamp) \
+	database/$(DEPDIR)/$(am__dirstamp)
+database/rrdcalctemplate.$(OBJEXT): database/$(am__dirstamp) \
+	database/$(DEPDIR)/$(am__dirstamp)
+database/rrddim.$(OBJEXT): database/$(am__dirstamp) \
+	database/$(DEPDIR)/$(am__dirstamp)
+database/rrddimvar.$(OBJEXT): database/$(am__dirstamp) \
+	database/$(DEPDIR)/$(am__dirstamp)
+database/rrdfamily.$(OBJEXT): database/$(am__dirstamp) \
+	database/$(DEPDIR)/$(am__dirstamp)
+database/rrdhost.$(OBJEXT): database/$(am__dirstamp) \
+	database/$(DEPDIR)/$(am__dirstamp)
+database/rrd.$(OBJEXT): database/$(am__dirstamp) \
+	database/$(DEPDIR)/$(am__dirstamp)
+database/rrdset.$(OBJEXT): database/$(am__dirstamp) \
+	database/$(DEPDIR)/$(am__dirstamp)
+database/rrdsetvar.$(OBJEXT): database/$(am__dirstamp) \
+	database/$(DEPDIR)/$(am__dirstamp)
+database/rrdvar.$(OBJEXT): database/$(am__dirstamp) \
+	database/$(DEPDIR)/$(am__dirstamp)
+streaming/$(am__dirstamp):
+	@$(MKDIR_P) streaming
+	@: > streaming/$(am__dirstamp)
+streaming/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) streaming/$(DEPDIR)
+	@: > streaming/$(DEPDIR)/$(am__dirstamp)
+streaming/rrdpush.$(OBJEXT): streaming/$(am__dirstamp) \
+	streaming/$(DEPDIR)/$(am__dirstamp)
+collectors/statsd.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/statsd.plugin
+	@: > collectors/statsd.plugin/$(am__dirstamp)
+collectors/statsd.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/statsd.plugin/$(DEPDIR)
+	@: > collectors/statsd.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/statsd.plugin/statsd.$(OBJEXT):  \
+	collectors/statsd.plugin/$(am__dirstamp) \
+	collectors/statsd.plugin/$(DEPDIR)/$(am__dirstamp)
+web/server/$(am__dirstamp):
+	@$(MKDIR_P) web/server
+	@: > web/server/$(am__dirstamp)
+web/server/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/server/$(DEPDIR)
+	@: > web/server/$(DEPDIR)/$(am__dirstamp)
+web/server/web_client.$(OBJEXT): web/server/$(am__dirstamp) \
+	web/server/$(DEPDIR)/$(am__dirstamp)
+web/server/web_server.$(OBJEXT): web/server/$(am__dirstamp) \
+	web/server/$(DEPDIR)/$(am__dirstamp)
+web/server/web_client_cache.$(OBJEXT): web/server/$(am__dirstamp) \
+	web/server/$(DEPDIR)/$(am__dirstamp)
+web/server/single/$(am__dirstamp):
+	@$(MKDIR_P) web/server/single
+	@: > web/server/single/$(am__dirstamp)
+web/server/single/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/server/single/$(DEPDIR)
+	@: > web/server/single/$(DEPDIR)/$(am__dirstamp)
+web/server/single/single-threaded.$(OBJEXT):  \
+	web/server/single/$(am__dirstamp) \
+	web/server/single/$(DEPDIR)/$(am__dirstamp)
+web/server/multi/$(am__dirstamp):
+	@$(MKDIR_P) web/server/multi
+	@: > web/server/multi/$(am__dirstamp)
+web/server/multi/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/server/multi/$(DEPDIR)
+	@: > web/server/multi/$(DEPDIR)/$(am__dirstamp)
+web/server/multi/multi-threaded.$(OBJEXT):  \
+	web/server/multi/$(am__dirstamp) \
+	web/server/multi/$(DEPDIR)/$(am__dirstamp)
+web/server/static/$(am__dirstamp):
+	@$(MKDIR_P) web/server/static
+	@: > web/server/static/$(am__dirstamp)
+web/server/static/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) web/server/static/$(DEPDIR)
+	@: > web/server/static/$(DEPDIR)/$(am__dirstamp)
+web/server/static/static-threaded.$(OBJEXT):  \
+	web/server/static/$(am__dirstamp) \
+	web/server/static/$(DEPDIR)/$(am__dirstamp)
+collectors/freebsd.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/freebsd.plugin
+	@: > collectors/freebsd.plugin/$(am__dirstamp)
+collectors/freebsd.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/freebsd.plugin/$(DEPDIR)
+	@: > collectors/freebsd.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/freebsd.plugin/plugin_freebsd.$(OBJEXT):  \
+	collectors/freebsd.plugin/$(am__dirstamp) \
+	collectors/freebsd.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/freebsd.plugin/freebsd_sysctl.$(OBJEXT):  \
+	collectors/freebsd.plugin/$(am__dirstamp) \
+	collectors/freebsd.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/freebsd.plugin/freebsd_getmntinfo.$(OBJEXT):  \
+	collectors/freebsd.plugin/$(am__dirstamp) \
+	collectors/freebsd.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/freebsd.plugin/freebsd_getifaddrs.$(OBJEXT):  \
+	collectors/freebsd.plugin/$(am__dirstamp) \
+	collectors/freebsd.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/freebsd.plugin/freebsd_devstat.$(OBJEXT):  \
+	collectors/freebsd.plugin/$(am__dirstamp) \
+	collectors/freebsd.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/freebsd.plugin/freebsd_kstat_zfs.$(OBJEXT):  \
+	collectors/freebsd.plugin/$(am__dirstamp) \
+	collectors/freebsd.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/freebsd.plugin/freebsd_ipfw.$(OBJEXT):  \
+	collectors/freebsd.plugin/$(am__dirstamp) \
+	collectors/freebsd.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/proc.plugin
+	@: > collectors/proc.plugin/$(am__dirstamp)
+collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/proc.plugin/$(DEPDIR)
+	@: > collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/zfs_common.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/macos.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/macos.plugin
+	@: > collectors/macos.plugin/$(am__dirstamp)
+collectors/macos.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/macos.plugin/$(DEPDIR)
+	@: > collectors/macos.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/macos.plugin/plugin_macos.$(OBJEXT):  \
+	collectors/macos.plugin/$(am__dirstamp) \
+	collectors/macos.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/macos.plugin/macos_sysctl.$(OBJEXT):  \
+	collectors/macos.plugin/$(am__dirstamp) \
+	collectors/macos.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/macos.plugin/macos_mach_smi.$(OBJEXT):  \
+	collectors/macos.plugin/$(am__dirstamp) \
+	collectors/macos.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/macos.plugin/macos_fw.$(OBJEXT):  \
+	collectors/macos.plugin/$(am__dirstamp) \
+	collectors/macos.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/cgroups.plugin/sys_fs_cgroup.$(OBJEXT):  \
+	collectors/cgroups.plugin/$(am__dirstamp) \
+	collectors/cgroups.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/diskspace.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/diskspace.plugin
+	@: > collectors/diskspace.plugin/$(am__dirstamp)
+collectors/diskspace.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/diskspace.plugin/$(DEPDIR)
+	@: > collectors/diskspace.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/diskspace.plugin/plugin_diskspace.$(OBJEXT):  \
+	collectors/diskspace.plugin/$(am__dirstamp) \
+	collectors/diskspace.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/nfacct.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/nfacct.plugin
+	@: > collectors/nfacct.plugin/$(am__dirstamp)
+collectors/nfacct.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/nfacct.plugin/$(DEPDIR)
+	@: > collectors/nfacct.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/nfacct.plugin/plugin_nfacct.$(OBJEXT):  \
+	collectors/nfacct.plugin/$(am__dirstamp) \
+	collectors/nfacct.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/ipc.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/plugin_proc.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_diskstats.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_interrupts.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_softirqs.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_loadavg.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_meminfo.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_dev.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_ip_vs_stats.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_netstat.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_rpc_nfs.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_rpc_nfsd.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_snmp.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_snmp6.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_sctp_snmp.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_sockstat.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_sockstat6.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_softnet_stat.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_stat_conntrack.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_net_stat_synproxy.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_self_mountinfo.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_spl_kstat_zfs.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_stat.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_sys_kernel_random_entropy_avail.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_vmstat.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/proc_uptime.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/sys_kernel_mm_ksm.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/sys_devices_system_edac_mc.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/sys_devices_system_node.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/proc.plugin/sys_fs_btrfs.$(OBJEXT):  \
+	collectors/proc.plugin/$(am__dirstamp) \
+	collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/tc.plugin/$(am__dirstamp):
+	@$(MKDIR_P) collectors/tc.plugin
+	@: > collectors/tc.plugin/$(am__dirstamp)
+collectors/tc.plugin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) collectors/tc.plugin/$(DEPDIR)
+	@: > collectors/tc.plugin/$(DEPDIR)/$(am__dirstamp)
+collectors/tc.plugin/plugin_tc.$(OBJEXT):  \
+	collectors/tc.plugin/$(am__dirstamp) \
+	collectors/tc.plugin/$(DEPDIR)/$(am__dirstamp)
+
+netdata$(EXEEXT): $(netdata_OBJECTS) $(netdata_DEPENDENCIES) $(EXTRA_netdata_DEPENDENCIES) 
+	@rm -f netdata$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(netdata_OBJECTS) $(netdata_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+	-rm -f backends/*.$(OBJEXT)
+	-rm -f backends/graphite/*.$(OBJEXT)
+	-rm -f backends/json/*.$(OBJEXT)
+	-rm -f backends/opentsdb/*.$(OBJEXT)
+	-rm -f backends/prometheus/*.$(OBJEXT)
+	-rm -f collectors/apps.plugin/*.$(OBJEXT)
+	-rm -f collectors/cgroups.plugin/*.$(OBJEXT)
+	-rm -f collectors/checks.plugin/*.$(OBJEXT)
+	-rm -f collectors/diskspace.plugin/*.$(OBJEXT)
+	-rm -f collectors/freebsd.plugin/*.$(OBJEXT)
+	-rm -f collectors/freeipmi.plugin/*.$(OBJEXT)
+	-rm -f collectors/idlejitter.plugin/*.$(OBJEXT)
+	-rm -f collectors/macos.plugin/*.$(OBJEXT)
+	-rm -f collectors/nfacct.plugin/*.$(OBJEXT)
+	-rm -f collectors/plugins.d/*.$(OBJEXT)
+	-rm -f collectors/proc.plugin/*.$(OBJEXT)
+	-rm -f collectors/statsd.plugin/*.$(OBJEXT)
+	-rm -f collectors/tc.plugin/*.$(OBJEXT)
+	-rm -f daemon/*.$(OBJEXT)
+	-rm -f database/*.$(OBJEXT)
+	-rm -f health/*.$(OBJEXT)
+	-rm -f libnetdata/*.$(OBJEXT)
+	-rm -f libnetdata/adaptive_resortable_list/*.$(OBJEXT)
+	-rm -f libnetdata/avl/*.$(OBJEXT)
+	-rm -f libnetdata/buffer/*.$(OBJEXT)
+	-rm -f libnetdata/clocks/*.$(OBJEXT)
+	-rm -f libnetdata/config/*.$(OBJEXT)
+	-rm -f libnetdata/dictionary/*.$(OBJEXT)
+	-rm -f libnetdata/eval/*.$(OBJEXT)
+	-rm -f libnetdata/locks/*.$(OBJEXT)
+	-rm -f libnetdata/log/*.$(OBJEXT)
+	-rm -f libnetdata/popen/*.$(OBJEXT)
+	-rm -f libnetdata/procfile/*.$(OBJEXT)
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 # This directory's subdirectories are mostly independent; you can cd
 # into them and run 'make' without going through this Makefile.
@@ -662,6 +2617,7 @@ distdir: $(DISTFILES)
 dist-gzip: distdir
 	tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
 	$(am__post_remove_distdir)
+
 dist-bzip2: distdir
 	tardir=$(distdir) && $(am__tar) | BZIP2=$${BZIP2--9} bzip2 -c >$(distdir).tar.bz2
 	$(am__post_remove_distdir)
@@ -669,6 +2625,7 @@ dist-bzip2: distdir
 dist-lzip: distdir
 	tardir=$(distdir) && $(am__tar) | lzip -c $${LZIP_OPT--9} >$(distdir).tar.lz
 	$(am__post_remove_distdir)
+
 dist-xz: distdir
 	tardir=$(distdir) && $(am__tar) | XZ_OPT=$${XZ_OPT--e} xz -c >$(distdir).tar.xz
 	$(am__post_remove_distdir)
@@ -783,9 +2740,12 @@ distcleancheck: distclean
 	       exit 1; } >&2
 check-am: all-am
 check: check-recursive
-all-am: Makefile $(SCRIPTS) $(DATA) config.h
+all-am: Makefile $(PROGRAMS) $(SCRIPTS) $(DATA) config.h
 installdirs: installdirs-recursive
 installdirs-am:
+	for dir in "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(sbindir)" "$(DESTDIR)$(cachedir)" "$(DESTDIR)$(logdir)" "$(DESTDIR)$(registrydir)" "$(DESTDIR)$(varlibdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
 install: install-recursive
 install-exec: install-exec-recursive
 install-data: install-data-recursive
@@ -812,6 +2772,134 @@ clean-generic:
 distclean-generic:
 	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
 	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+	-rm -f backends/$(DEPDIR)/$(am__dirstamp)
+	-rm -f backends/$(am__dirstamp)
+	-rm -f backends/graphite/$(DEPDIR)/$(am__dirstamp)
+	-rm -f backends/graphite/$(am__dirstamp)
+	-rm -f backends/json/$(DEPDIR)/$(am__dirstamp)
+	-rm -f backends/json/$(am__dirstamp)
+	-rm -f backends/opentsdb/$(DEPDIR)/$(am__dirstamp)
+	-rm -f backends/opentsdb/$(am__dirstamp)
+	-rm -f backends/prometheus/$(DEPDIR)/$(am__dirstamp)
+	-rm -f backends/prometheus/$(am__dirstamp)
+	-rm -f collectors/apps.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/apps.plugin/$(am__dirstamp)
+	-rm -f collectors/cgroups.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/cgroups.plugin/$(am__dirstamp)
+	-rm -f collectors/checks.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/checks.plugin/$(am__dirstamp)
+	-rm -f collectors/diskspace.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/diskspace.plugin/$(am__dirstamp)
+	-rm -f collectors/freebsd.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/freebsd.plugin/$(am__dirstamp)
+	-rm -f collectors/freeipmi.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/freeipmi.plugin/$(am__dirstamp)
+	-rm -f collectors/idlejitter.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/idlejitter.plugin/$(am__dirstamp)
+	-rm -f collectors/macos.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/macos.plugin/$(am__dirstamp)
+	-rm -f collectors/nfacct.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/nfacct.plugin/$(am__dirstamp)
+	-rm -f collectors/plugins.d/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/plugins.d/$(am__dirstamp)
+	-rm -f collectors/proc.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/proc.plugin/$(am__dirstamp)
+	-rm -f collectors/statsd.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/statsd.plugin/$(am__dirstamp)
+	-rm -f collectors/tc.plugin/$(DEPDIR)/$(am__dirstamp)
+	-rm -f collectors/tc.plugin/$(am__dirstamp)
+	-rm -f daemon/$(DEPDIR)/$(am__dirstamp)
+	-rm -f daemon/$(am__dirstamp)
+	-rm -f database/$(DEPDIR)/$(am__dirstamp)
+	-rm -f database/$(am__dirstamp)
+	-rm -f health/$(DEPDIR)/$(am__dirstamp)
+	-rm -f health/$(am__dirstamp)
+	-rm -f libnetdata/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/$(am__dirstamp)
+	-rm -f libnetdata/adaptive_resortable_list/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/adaptive_resortable_list/$(am__dirstamp)
+	-rm -f libnetdata/avl/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/avl/$(am__dirstamp)
+	-rm -f libnetdata/buffer/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/buffer/$(am__dirstamp)
+	-rm -f libnetdata/clocks/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/clocks/$(am__dirstamp)
+	-rm -f libnetdata/config/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/config/$(am__dirstamp)
+	-rm -f libnetdata/dictionary/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/dictionary/$(am__dirstamp)
+	-rm -f libnetdata/eval/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/eval/$(am__dirstamp)
+	-rm -f libnetdata/locks/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/locks/$(am__dirstamp)
+	-rm -f libnetdata/log/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/log/$(am__dirstamp)
+	-rm -f libnetdata/popen/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/popen/$(am__dirstamp)
+	-rm -f libnetdata/procfile/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/procfile/$(am__dirstamp)
+	-rm -f libnetdata/simple_pattern/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/simple_pattern/$(am__dirstamp)
+	-rm -f libnetdata/socket/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/socket/$(am__dirstamp)
+	-rm -f libnetdata/statistical/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/statistical/$(am__dirstamp)
+	-rm -f libnetdata/storage_number/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/storage_number/$(am__dirstamp)
+	-rm -f libnetdata/threads/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/threads/$(am__dirstamp)
+	-rm -f libnetdata/url/$(DEPDIR)/$(am__dirstamp)
+	-rm -f libnetdata/url/$(am__dirstamp)
+	-rm -f registry/$(DEPDIR)/$(am__dirstamp)
+	-rm -f registry/$(am__dirstamp)
+	-rm -f streaming/$(DEPDIR)/$(am__dirstamp)
+	-rm -f streaming/$(am__dirstamp)
+	-rm -f web/api/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/$(am__dirstamp)
+	-rm -f web/api/badges/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/badges/$(am__dirstamp)
+	-rm -f web/api/exporters/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/exporters/$(am__dirstamp)
+	-rm -f web/api/exporters/shell/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/exporters/shell/$(am__dirstamp)
+	-rm -f web/api/formatters/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/formatters/$(am__dirstamp)
+	-rm -f web/api/formatters/csv/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/formatters/csv/$(am__dirstamp)
+	-rm -f web/api/formatters/json/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/formatters/json/$(am__dirstamp)
+	-rm -f web/api/formatters/ssv/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/formatters/ssv/$(am__dirstamp)
+	-rm -f web/api/formatters/value/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/formatters/value/$(am__dirstamp)
+	-rm -f web/api/queries/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/queries/$(am__dirstamp)
+	-rm -f web/api/queries/average/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/queries/average/$(am__dirstamp)
+	-rm -f web/api/queries/des/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/queries/des/$(am__dirstamp)
+	-rm -f web/api/queries/incremental_sum/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/queries/incremental_sum/$(am__dirstamp)
+	-rm -f web/api/queries/max/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/queries/max/$(am__dirstamp)
+	-rm -f web/api/queries/median/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/queries/median/$(am__dirstamp)
+	-rm -f web/api/queries/min/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/queries/min/$(am__dirstamp)
+	-rm -f web/api/queries/ses/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/queries/ses/$(am__dirstamp)
+	-rm -f web/api/queries/stddev/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/queries/stddev/$(am__dirstamp)
+	-rm -f web/api/queries/sum/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/api/queries/sum/$(am__dirstamp)
+	-rm -f web/server/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/server/$(am__dirstamp)
+	-rm -f web/server/multi/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/server/multi/$(am__dirstamp)
+	-rm -f web/server/single/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/server/single/$(am__dirstamp)
+	-rm -f web/server/static/$(DEPDIR)/$(am__dirstamp)
+	-rm -f web/server/static/$(am__dirstamp)
 
 maintainer-clean-generic:
 	@echo "This command is intended for maintainers to use"
@@ -819,12 +2907,15 @@ maintainer-clean-generic:
 	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
 clean: clean-recursive
 
-clean-am: clean-generic mostlyclean-am
+clean-am: clean-generic clean-pluginsPROGRAMS clean-sbinPROGRAMS \
+	mostlyclean-am
 
 distclean: distclean-recursive
 	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -rf backends/$(DEPDIR) backends/graphite/$(DEPDIR) backends/json/$(DEPDIR) backends/opentsdb/$(DEPDIR) backends/prometheus/$(DEPDIR) collectors/apps.plugin/$(DEPDIR) collectors/cgroups.plugin/$(DEPDIR) collectors/checks.plugin/$(DEPDIR) collectors/diskspace.plugin/$(DEPDIR) collectors/freebsd.plugin/$(DEPDIR) collectors/freeipmi.plugin/$(DEPDIR) collectors/idlejitter.plugin/$(DEPDIR) collectors/macos.plugin/$(DEPDIR) collectors/nfacct.plugin/$(DEPDIR) collectors/plugins.d/$(DEPDIR) collectors/proc.plugin/$(DEPDIR) collectors/statsd.plugin/$(DEPDIR) collectors/tc.plugin/$(DEPDIR) daemon/$(DEPDIR) database/$(DEPDIR) health/$(DEPDIR) libnetdata/$(DEPDIR) libnetdata/adaptive_resortable_list/$(DEPDIR) libnetdata/avl/$(DEPDIR) libnetdata/buffer/$(DEPDIR) libnetdata/clocks/$(DEPDIR) libnetdata/config/$(DEPDIR) libnetdata/dictionary/$(DEPDIR) libnetdata/eval/$(DEPDIR) libnetdata/locks/$(DEPDIR) libnetdata/log/$(DEPDIR) libnetdata/popen/$(DEPDIR) libnetdata/procfile/$(DEPDIR) libnetdata/simple_pattern/$(DEPDIR) libnetdata/socket/$(DEPDIR) libnetdata/statistical/$(DEPDIR) libnetdata/storage_number/$(DEPDIR) libnetdata/threads/$(DEPDIR) libnetdata/url/$(DEPDIR) registry/$(DEPDIR) streaming/$(DEPDIR) web/api/$(DEPDIR) web/api/badges/$(DEPDIR) web/api/exporters/$(DEPDIR) web/api/exporters/shell/$(DEPDIR) web/api/formatters/$(DEPDIR) web/api/formatters/csv/$(DEPDIR) web/api/formatters/json/$(DEPDIR) web/api/formatters/ssv/$(DEPDIR) web/api/formatters/value/$(DEPDIR) web/api/queries/$(DEPDIR) web/api/queries/average/$(DEPDIR) web/api/queries/des/$(DEPDIR) web/api/queries/incremental_sum/$(DEPDIR) web/api/queries/max/$(DEPDIR) web/api/queries/median/$(DEPDIR) web/api/queries/min/$(DEPDIR) web/api/queries/ses/$(DEPDIR) web/api/queries/stddev/$(DEPDIR) web/api/queries/sum/$(DEPDIR) web/server/$(DEPDIR) web/server/multi/$(DEPDIR) web/server/single/$(DEPDIR) web/server/static/$(DEPDIR)
 	-rm -f Makefile
-distclean-am: clean-am distclean-generic distclean-hdr distclean-tags
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-hdr distclean-tags
 
 dvi: dvi-recursive
 
@@ -838,13 +2929,15 @@ info: info-recursive
 
 info-am:
 
-install-data-am:
+install-data-am: install-dist_cacheDATA install-dist_logDATA \
+	install-dist_registryDATA install-dist_varlibDATA \
+	install-pluginsPROGRAMS
 
 install-dvi: install-dvi-recursive
 
 install-dvi-am:
 
-install-exec-am:
+install-exec-am: install-sbinPROGRAMS
 
 install-html: install-html-recursive
 
@@ -869,12 +2962,13 @@ installcheck-am:
 maintainer-clean: maintainer-clean-recursive
 	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
 	-rm -rf $(top_srcdir)/autom4te.cache
+	-rm -rf backends/$(DEPDIR) backends/graphite/$(DEPDIR) backends/json/$(DEPDIR) backends/opentsdb/$(DEPDIR) backends/prometheus/$(DEPDIR) collectors/apps.plugin/$(DEPDIR) collectors/cgroups.plugin/$(DEPDIR) collectors/checks.plugin/$(DEPDIR) collectors/diskspace.plugin/$(DEPDIR) collectors/freebsd.plugin/$(DEPDIR) collectors/freeipmi.plugin/$(DEPDIR) collectors/idlejitter.plugin/$(DEPDIR) collectors/macos.plugin/$(DEPDIR) collectors/nfacct.plugin/$(DEPDIR) collectors/plugins.d/$(DEPDIR) collectors/proc.plugin/$(DEPDIR) collectors/statsd.plugin/$(DEPDIR) collectors/tc.plugin/$(DEPDIR) daemon/$(DEPDIR) database/$(DEPDIR) health/$(DEPDIR) libnetdata/$(DEPDIR) libnetdata/adaptive_resortable_list/$(DEPDIR) libnetdata/avl/$(DEPDIR) libnetdata/buffer/$(DEPDIR) libnetdata/clocks/$(DEPDIR) libnetdata/config/$(DEPDIR) libnetdata/dictionary/$(DEPDIR) libnetdata/eval/$(DEPDIR) libnetdata/locks/$(DEPDIR) libnetdata/log/$(DEPDIR) libnetdata/popen/$(DEPDIR) libnetdata/procfile/$(DEPDIR) libnetdata/simple_pattern/$(DEPDIR) libnetdata/socket/$(DEPDIR) libnetdata/statistical/$(DEPDIR) libnetdata/storage_number/$(DEPDIR) libnetdata/threads/$(DEPDIR) libnetdata/url/$(DEPDIR) registry/$(DEPDIR) streaming/$(DEPDIR) web/api/$(DEPDIR) web/api/badges/$(DEPDIR) web/api/exporters/$(DEPDIR) web/api/exporters/shell/$(DEPDIR) web/api/formatters/$(DEPDIR) web/api/formatters/csv/$(DEPDIR) web/api/formatters/json/$(DEPDIR) web/api/formatters/ssv/$(DEPDIR) web/api/formatters/value/$(DEPDIR) web/api/queries/$(DEPDIR) web/api/queries/average/$(DEPDIR) web/api/queries/des/$(DEPDIR) web/api/queries/incremental_sum/$(DEPDIR) web/api/queries/max/$(DEPDIR) web/api/queries/median/$(DEPDIR) web/api/queries/min/$(DEPDIR) web/api/queries/ses/$(DEPDIR) web/api/queries/stddev/$(DEPDIR) web/api/queries/sum/$(DEPDIR) web/server/$(DEPDIR) web/server/multi/$(DEPDIR) web/server/single/$(DEPDIR) web/server/static/$(DEPDIR)
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
 mostlyclean: mostlyclean-recursive
 
-mostlyclean-am: mostlyclean-generic
+mostlyclean-am: mostlyclean-compile mostlyclean-generic
 
 pdf: pdf-recursive
 
@@ -884,25 +2978,33 @@ ps: ps-recursive
 
 ps-am:
 
-uninstall-am:
+uninstall-am: uninstall-dist_cacheDATA uninstall-dist_logDATA \
+	uninstall-dist_registryDATA uninstall-dist_varlibDATA \
+	uninstall-pluginsPROGRAMS uninstall-sbinPROGRAMS
 
 .MAKE: $(am__recursive_targets) all install-am install-strip
 
 .PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am \
 	am--refresh check check-am clean clean-cscope clean-generic \
-	cscope cscopelist-am ctags ctags-am dist dist-all dist-bzip2 \
-	dist-gzip dist-lzip dist-shar dist-tarZ dist-xz dist-zip \
-	distcheck distclean distclean-generic distclean-hdr \
+	clean-pluginsPROGRAMS clean-sbinPROGRAMS cscope cscopelist-am \
+	ctags ctags-am dist dist-all dist-bzip2 dist-gzip dist-lzip \
+	dist-shar dist-tarZ dist-xz dist-zip distcheck distclean \
+	distclean-compile distclean-generic distclean-hdr \
 	distclean-tags distcleancheck distdir distuninstallcheck dvi \
 	dvi-am html html-am info info-am install install-am \
-	install-data install-data-am install-dvi install-dvi-am \
+	install-data install-data-am install-dist_cacheDATA \
+	install-dist_logDATA install-dist_registryDATA \
+	install-dist_varlibDATA install-dvi install-dvi-am \
 	install-exec install-exec-am install-html install-html-am \
 	install-info install-info-am install-man install-pdf \
-	install-pdf-am install-ps install-ps-am install-strip \
-	installcheck installcheck-am installdirs installdirs-am \
-	maintainer-clean maintainer-clean-generic mostlyclean \
+	install-pdf-am install-pluginsPROGRAMS install-ps \
+	install-ps-am install-sbinPROGRAMS install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
 	mostlyclean-generic pdf pdf-am ps ps-am tags tags-am uninstall \
-	uninstall-am
+	uninstall-am uninstall-dist_cacheDATA uninstall-dist_logDATA \
+	uninstall-dist_registryDATA uninstall-dist_varlibDATA \
+	uninstall-pluginsPROGRAMS uninstall-sbinPROGRAMS
 
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
diff --git a/README.md b/README.md
index 4fd40b497..6f11fd14a 100644
--- a/README.md
+++ b/README.md
@@ -1,48 +1,128 @@
-# netdata [![Build Status](https://travis-ci.org/firehol/netdata.svg?branch=master)](https://travis-ci.org/firehol/netdata) [![Codacy Badge](https://api.codacy.com/project/badge/Grade/a994873f30d045b9b4b83606c3eb3498)](https://www.codacy.com/app/netdata/netdata?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=firehol/netdata&amp;utm_campaign=Badge_Grade) [![Code Climate](https://codeclimate.com/github/firehol/netdata/badges/gpa.svg)](https://codeclimate.com/github/firehol/netdata) [![License: GPL v3+](https://img.shields.io/badge/License-GPL%20v3%2B-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
+# netdata [![Build Status](https://travis-ci.com/netdata/netdata.svg?branch=master)](https://travis-ci.com/netdata/netdata) [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/2231/badge)](https://bestpractices.coreinfrastructure.org/projects/2231) [![License: GPL v3+](https://img.shields.io/badge/License-GPL%20v3%2B-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
+
+[![Code Climate](https://codeclimate.com/github/netdata/netdata/badges/gpa.svg)](https://codeclimate.com/github/netdata/netdata)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/a994873f30d045b9b4b83606c3eb3498)](https://www.codacy.com/app/netdata/netdata?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=netdata/netdata&amp;utm_campaign=Badge_Grade)
+[![LGTM C](https://img.shields.io/lgtm/grade/cpp/g/netdata/netdata.svg?logo=lgtm)](https://lgtm.com/projects/g/netdata/netdata/context:cpp)
+[![LGTM JS](https://img.shields.io/lgtm/grade/javascript/g/netdata/netdata.svg?logo=lgtm)](https://lgtm.com/projects/g/netdata/netdata/context:javascript)
+[![LGTM PYTHON](https://img.shields.io/lgtm/grade/python/g/netdata/netdata.svg?logo=lgtm)](https://lgtm.com/projects/g/netdata/netdata/context:python)
+
 > *New to netdata? Here is a live demo: [http://my-netdata.io](http://my-netdata.io)*
 
 **netdata** is a system for **distributed real-time performance and health monitoring**.
-It provides **unparalleled insights, in real-time**, of everything happening on the
-system it runs (including applications such as web and database servers), using
-**modern interactive web dashboards**.
+
+It provides **unparalleled insights**, **in real-time**, of everything happening on the systems it runs (including containers and applications such as web and database servers), using **modern interactive web dashboards**.
+
+### netdata core values
+
+we value                    |netdata...
+:--------------------------:|:----
+high resolution metrics     |collects all metrics **every single second**
+unlimited metrics           |collects **thousands of metrics** per monitored node
+real-time visualization     |dashboards run with **sub-second latency**, collection to visualization
+powerful anomaly detection  |has a **distributed watchdog** embedded in it, running on all monitored nodes
+visual anomaly detection    |dashboards are optimized for **spotting anomalies**, across all metrics
+meaningful presentation     |dashboards present **all metrics in a structured, easy to understand, way**
+zero configuration          |**auto-detects** all metrics and comes with dozens of alarms
+resource utilization        |core is **optimized C code**, using <1% utilization of single CPU core
+
+netdata also supports:
+ 
+ - monitoring **ephemeral nodes** and **auto-scaled containers**,
+ - **integration** with existing monitoring infrastructure (time-series databases like `prometheus`, `graphite`, `opentsdb`) and third-party event notification methods
+(like `slack`, `pagerduty`, `pushover`, and dozens more),
+ - building hierarchies of monitored nodes via **real-time metrics streaming** between them,
+ - embedding charts and dashboards on third party web sites and applications, such as [Atlassian's Confluence](https://github.com/netdata/netdata/wiki/Custom-Dashboard-with-Confluence).
 
 _netdata is **fast** and **efficient**, designed to permanently run on all systems
 (**physical** & **virtual** servers, **containers**, **IoT** devices), without
 disrupting their core function._
 
-netdata runs on **Linux**, **FreeBSD**, and **MacOS**.
+netdata currently runs on **Linux**, **FreeBSD**, and **MacOS**.
 
 [![Twitter Follow](https://img.shields.io/twitter/follow/linuxnetdata.svg?style=social&label=New%20-%20stay%20in%20touch%20-%20follow%20netdata%20on%20twitter)](https://twitter.com/linuxnetdata)
-[![analytics](http://www.google-analytics.com/collect?v=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Ffirehol%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Freadme&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](http://www.google-analytics.com/collect?v=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Freadme&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
 
 ---
 
 ## User base
 *Docker pulls*<br/>
-[![Docker titpetric/netdata Pulls](https://img.shields.io/docker/pulls/titpetric/netdata.svg?label=docker%20pulls%20titpetric/netdata)](https://hub.docker.com/r/titpetric/netdata/) [![Docker firehol/netdata Pulls](https://img.shields.io/docker/pulls/firehol/netdata.svg?label=docker%20pulls%20firehol/netdata)](https://hub.docker.com/r/firehol/netdata/)
+[![netdata/netdata (official)](https://img.shields.io/docker/pulls/netdata/netdata.svg?label=netdata/netdata+%28official%29)](https://hub.docker.com/r/netdata/netdata/)
+[![firehol/netdata (deprecated)](https://img.shields.io/docker/pulls/firehol/netdata.svg?label=firehol/netdata+%28deprecated%29)](https://hub.docker.com/r/firehol/netdata/)
+[![titpetric/netdata (donated)](https://img.shields.io/docker/pulls/titpetric/netdata.svg?label=titpetric/netdata+%28third+party%29)](https://hub.docker.com/r/titpetric/netdata/)
 
-*Since May 16th 2016 (the date the [global public netdata registry](https://github.com/firehol/netdata/wiki/mynetdata-menu-item) was released):*<br/>
-[![User Base](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_entries&dimensions=persons&label=user%20base&units=null&value_color=blue&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry) [![Monitored Servers](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_entries&dimensions=machines&label=servers%20monitored&units=null&value_color=orange&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry) [![Sessions Served](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_sessions&label=sessions%20served&units=null&value_color=yellowgreen&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry)
+*Since May 16th 2016 (the date the [global public netdata registry](https://github.com/netdata/netdata/wiki/mynetdata-menu-item) was released):*<br/>
+[![User Base](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_entries&dimensions=persons&label=user%20base&units=null&value_color=blue&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry)
+[![Monitored Servers](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_entries&dimensions=machines&label=servers%20monitored&units=null&value_color=orange&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry)
+[![Sessions Served](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_sessions&label=sessions%20served&units=null&value_color=yellowgreen&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry)
 
 *in the last 24 hours:*<br/>
-[![New Users Today](http://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_entries&dimensions=persons&after=-86400&options=unaligned&group=incremental-sum&label=new%20users%20today&units=null&value_color=blue&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry) [![New Machines Today](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_entries&dimensions=machines&group=incremental-sum&after=-86400&options=unaligned&label=servers%20added%20today&units=null&value_color=orange&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry) [![Sessions Today](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_sessions&after=-86400&group=incremental-sum&options=unaligned&label=sessions%20served%20today&units=null&value_color=yellowgreen&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry)
+[![New Users Today](http://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_entries&dimensions=persons&after=-86400&options=unaligned&group=incremental-sum&label=new%20users%20today&units=null&value_color=blue&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry)
+[![New Machines Today](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_entries&dimensions=machines&group=incremental-sum&after=-86400&options=unaligned&label=servers%20added%20today&units=null&value_color=orange&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry)
+[![Sessions Today](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_sessions&after=-86400&group=incremental-sum&options=unaligned&label=sessions%20served%20today&units=null&value_color=yellowgreen&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry)
 
 ---
 
 ## News
 
-`Dec 17th, 2017` - **[netdata v1.9.0 released!](https://github.com/firehol/netdata/releases)**
+`Sep 18, 2018` - **netdata has its own organization**
+
+Netdata used to be a [firehol.org](https://firehol.org) project, accessible as `firehol/netdata`.
+
+Netdata now has its own github organization `netdata`, so all github URLs are now `netdata/netdata`. The old github URLs, repo clones, forks, etc redirect automatically to the new repo.  
+
+---
+
+![cncf](https://www.cncf.io/wp-content/uploads/2016/09/logo_cncf.png)
+
+`Jun 16, 2018` - **netdata in CNCF**
 
-A big release:
+Netdata is now at the [Cloud Native Computing Foundation (CNCF) landscape](https://landscape.cncf.io/grouping=no&sort=stars).
+
+Read the [netdata presentation](https://docs.google.com/presentation/d/18C8bCTbtgKDWqPa57GXIjB2PbjjpjsUNkLtZEz6YK8s/edit?usp=sharing) we gave at CNCF TOC on Sep 18, 2018.
+
+---
 
- - dashboard snapshots, for loading / saving selected time-frames
- - highlighted time-frames across all charts of the dashboard
- - IP access lists for filtering access to netdata
- - enhanced VMs and containers monitoring
- - auto-scaling of chart units
- - timezone conversion at the dashboard to allow comparing charts with server logs
- - python.d.plugin rewritten
- - dozens of more improvements, enhancements, features and compatibility fixes
+`Mar 27th, 2018` - **[netdata v1.10.0 released!](https://github.com/netdata/netdata/releases)**
+
+ - new web server, a lot faster and more secure
+ - updated all javascript libraries to their latest versions (fixed compatibility issues - now netdata chart can now be embedded on **Atlassian Confluence** pages and remain fully interactive!)
+ - new plugins:
+   - **BTRFS** (visualize BTRFS allocation with alarms)
+   - **bcache** (monitor hybrid setups HDD + SSD)
+   - **ceph**
+   - **nginx plus**
+   - **libreswan** (monitor the traffic of IPSEC tunnels)
+   - **traefik**
+   - **icecast**
+   - **ntpd**
+   - **httpcheck** (monitor any remote web server)
+   - **portcheck** (monitor any remote TCP port)
+   - **spring-boot** (monitor java spring-boot apps)
+   - **dnsdist**
+   - **Linux hugepages**
+ - improved plugins:
+   - **statsd**
+   - **web_log**
+   - **cgroups** for containers and VMs monitoring (netdata now supports **systemd-nspawn** and **kubernetes** - fixed security issue with `cgroup-network`)
+   - **Linux memory**
+   - **diskspace**
+   - **network interfaces**
+   - **postgres**
+   - **rabbitmq**
+   - **apps.plugin** (now it also tracks swap usage per process)
+   - **haproxy**
+   - **uptime**
+   - **ksm** (kernel memory debupper)
+   - **mdstat** (software raid)
+   - **elasticsearch**
+   - **apcupsd**
+   - **dhcpd**
+   - **fronius**
+   - **stiebeletron**
+ - new alarm notification methods
+   - **alerta**
+   - **IRC** (post on IRC channels)
+ - and dozens more improvements, enhancements, features and compatibility fixes
 
 ---
 
@@ -285,7 +365,7 @@ This is a list of what it currently monitors:
   global and per tube monitoring
 
 - **statsd**<br/>
-  [netdata is a fully featured statsd server](https://github.com/firehol/netdata/wiki/statsd)
+  [netdata is a fully featured statsd server](https://github.com/netdata/netdata/wiki/statsd)
 
 - **ceph**<br/>
   OSD usage, Pool usage, number of objects, etc.
@@ -299,13 +379,13 @@ And you can extend it, by writing plugins that collect data from any source, usi
 This is a high level overview of netdata feature set and architecture.
 Click it to to interact with it (it has direct links to documentation).
 
-[![netdata-overview](https://user-images.githubusercontent.com/2662304/37909754-6c812a7c-3114-11e8-8673-0d1926a9793a.png)](https://my-netdata.io/infographic.html)
+[![image](https://user-images.githubusercontent.com/2662304/47672043-a47eb480-dbb9-11e8-92a4-fa422d053309.png)](https://my-netdata.io/infographic.html)
 
 ---
 
 ## Installation
 
-Use our **[automatic installer](https://github.com/firehol/netdata/wiki/Installation)** to build and install it on your system.
+Use our **[automatic installer](https://github.com/netdata/netdata/wiki/Installation)** to build and install it on your system.
 
 It should run on **any Linux** system (including IoT). It has been tested on:
 
@@ -325,17 +405,17 @@ It should run on **any Linux** system (including IoT). It has been tested on:
 
 ## Interaction with netdata
 
-After installation, you can interact with netdata using **[CLI](https://github.com/firehol/netdata/wiki/Command-Line-Options)** and web dashboards.
+After installation, you can interact with netdata using **[CLI](https://github.com/netdata/netdata/wiki/Command-Line-Options)** and web dashboards.
 The default port of dashboard is 19999. To access the web dashboard on localhost, use: http://localhost:19999
 
 ---
 
 ## Documentation
 
-Check the **[netdata wiki](https://github.com/firehol/netdata/wiki)**.
+Check the **[netdata wiki](https://github.com/netdata/netdata/wiki)**.
 
 ## License
 
 netdata is [GPLv3+](LICENSE).
 
-It re-distributes other open-source tools and libraries. Please check the [third party licenses](https://github.com/firehol/netdata/blob/master/LICENSE-REDISTRIBUTED.md).
+Netdata re-distributes other open-source tools and libraries. Please check the [third party licenses](https://github.com/netdata/netdata/blob/master/REDISTRIBUTED.md).
diff --git a/LICENSE-REDISTRIBUTED.md b/REDISTRIBUTED.md
index caf411b62..ed30624fb 100644
--- a/LICENSE-REDISTRIBUTED.md
+++ b/REDISTRIBUTED.md
@@ -1,24 +1,45 @@
 # Netdata
 
 Copyright 2016-2017, Costa Tsaousis.
+Copyright 2017-2018, Netdata Inc.
 Released under [GPL v3 or later](http://www.gnu.org/licenses/gpl-3.0.en.html).
 
+Netdata uses SPDX license tags to identify the license for its files.
+Individual licenses referenced in the tags are available on the [SPDX project site](http://spdx.org/licenses/).
+
 ---
 
 ## Re-distributed software
 
-Netdata re-distributes the following third party software.
-We decided to re-distribute all these, instead of using them
-through a CDN, to allow netdata work in cases where internet
+Netdata re-distributes the following third-party software.
+We have decided to re-distribute all these, instead of using them
+through a CDN, to allow netdata to work in cases where Internet
 connectivity is not available.
 
-
 - [Dygraphs](http://dygraphs.com/)
 
     Copyright 2009, Dan Vanderkam
     [MIT License](http://dygraphs.com/legal.html)
 
 
+- [Easy Pie Chart](https://rendro.github.io/easy-pie-chart/)
+
+    Copyright 2013, Robert Fleischmann
+    [MIT License](https://github.com/rendro/easy-pie-chart/blob/master/LICENSE)
+
+
+- [Gauge.js](http://bernii.github.io/gauge.js/)
+
+    Copyright, Bernard Kobos
+    [MIT License](http://bernii.github.io/gauge.js/)
+
+
+- [d3pie](https://github.com/benkeen/d3pie)
+
+    Copyright (c) 2014-2015 Benjamin Keen
+    [MIT License](https://github.com/benkeen/d3pie/blob/master/LICENSE)
+
+
 - [jQuery Sparklines](http://omnipotent.net/jquery.sparkline/)
 
     Copyright 2009-2012, Splunk Inc.
@@ -28,19 +49,31 @@ connectivity is not available.
 - [Peity](http://benpickles.github.io/peity/)
 
     Copyright 2009-2015, Ben Pickles
-    [MIT License](https://github.com/benpickles/peity/blob/master/MIT-LICENCE)
-    
+    [MIT License](https://github.com/benpickles/peity/blob/master/LICENCE)
 
-- [Easy Pie Chart](https://rendro.github.io/easy-pie-chart/)
 
-    Copyright 2013, Robert Fleischmann
-    [MIT License](https://github.com/rendro/easy-pie-chart/blob/master/LICENSE)
+- [morris.js](http://morrisjs.github.io/morris.js/)
 
+    Copyright 2013, Olly Smith
+    [Simplified BSD License](http://morrisjs.github.io/morris.js/)
 
-- [Guage.js](http://bernii.github.io/gauge.js/)
 
-    Copyright, Bernard Kobos
-    [MIT License](http://bernii.github.io/gauge.js/)
+- [Raphaël](http://dmitrybaranovskiy.github.io/raphael/)
+
+    Copyright 2008, Dmitry Baranovskiy
+    [MIT License](http://dmitrybaranovskiy.github.io/raphael/license.html)
+
+
+- [C3](http://c3js.org/)
+
+    Copyright 2013, Masayuki Tanaka
+    [MIT License](https://github.com/masayuki0812/c3/blob/master/LICENSE)
+
+
+- [D3](http://d3js.org/)
+
+    Copyright 2015, Mike Bostock
+    [BSD License](http://opensource.org/licenses/BSD-3-Clause)
 
 
 - [jQuery](https://jquery.org/)
@@ -54,10 +87,6 @@ connectivity is not available.
     Copyright 2015, Twitter
     [MIT License](http://getbootstrap.com/getting-started/#license-faqs)
 
-- [Bootstrap-slider](http://seiyria.com/bootstrap-slider/)
-
-    Copyright 2017 Kyle Kemp, Rohit Kalkur, and contributors
-    [MIT License](https://github.com/seiyria/bootstrap-slider/blob/master/LICENSE.md)
 
 - [Bootstrap Toggle](http://www.bootstraptoggle.com/)
 
@@ -65,6 +94,12 @@ connectivity is not available.
     [MIT License](https://github.com/minhur/bootstrap-toggle/blob/master/LICENSE)
 
 
+- [Bootstrap-slider](http://seiyria.com/bootstrap-slider/)
+
+    Copyright 2017 Kyle Kemp, Rohit Kalkur, and contributors
+    [MIT License](https://github.com/seiyria/bootstrap-slider/blob/master/LICENSE.md)
+
+
 - [bootstrap-table](http://bootstrap-table.wenzhixin.net.cn/)
 
     Copyright (c) 2012-2016 Zhixin Wen <wenzhixin2010@gmail.com>
@@ -87,7 +122,8 @@ connectivity is not available.
 
     Created by Dave Gandy
     Font license: [SIL OFL 1.1](http://scripts.sil.org/OFL)
-    CSS license: [MIT License](http://opensource.org/licenses/mit-license.html)
+    Icon license [Creative Commons Attribution 4.0 (CC-BY 4.0)](https://creativecommons.org/licenses/by/4.0/)
+    Code license: [MIT License](http://opensource.org/licenses/mit-license.html)
 
 
 - [IconsDB.com Icons](http://www.iconsdb.com/soylent-red-icons/seo-performance-icon.html)
@@ -95,86 +131,79 @@ connectivity is not available.
     Icons provided as CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
 
 
-- [morris.js](http://morrisjs.github.io/morris.js/)
-
-    Copyright 2013, Olly Smith
-    [Simplified BSD License](http://morrisjs.github.io/morris.js/)
-
-
-- [Raphaël](http://raphaeljs.com/)
-
-    Copyright 2008, Dmitry Baranovskiy
-    [MIT License](http://raphaeljs.com/license.html)
-    
-
-- [C3](http://c3js.org/)
-
-    Copyright 2013, Masayuki Tanaka
-    [MIT License](https://github.com/masayuki0812/c3/blob/master/LICENSE)
-    
-
-- [D3](http://d3js.org/)
-
-    Copyright 2015, Mike Bostock
-    [BSD License](http://opensource.org/licenses/BSD-3-Clause)
-    
-    
 - [node-extend](https://github.com/justmoon/node-extend)
 
     Copyright 2014, Stefan Thomas
     [MIT License](https://github.com/justmoon/node-extend/blob/master/LICENSE)
-    
+
 
 - [node-net-snmp](https://github.com/stephenwvickers/node-net-snmp)
 
     Copyright 2013, Stephen Vickers
     [MIT License](https://github.com/stephenwvickers/node-net-snmp)
-    
+
 
 - [node-asn1-ber](https://github.com/stephenwvickers/node-asn1-ber)
 
     Copyright 2017, Stephen Vickers
     Copyright 2011, Mark Cavage
     [MIT License](https://github.com/stephenwvickers/node-asn1-ber)
-    
+
 
 - [pixl-xml](https://github.com/jhuckaby/pixl-xml)
 
     Copyright 2015, Joseph Huckaby
     [MIT License](https://github.com/jhuckaby/pixl-xml)
-    
+
+
 - [sensors](https://github.com/paroj/sensors.py)
 
     Copyright 2014, Pavel Rojtberg
     [LGPL 2.1 License](http://opensource.org/licenses/LGPL-2.1)
 
+
 - [PyYAML](https://bitbucket.org/blackjack/pysensors)
 
     Copyright 2006, Kirill Simonov
-    [MIT License](http://pyyaml.org)
+    [MIT License](https://github.com/yaml/pyyaml)
+
 
 - [urllib3](https://github.com/shazow/urllib3)
 
     Copyright 2008-2016 Andrey Petrov and [contributors](https://github.com/shazow/urllib3/blob/master/CONTRIBUTORS.txt)
     [MIT License](https://github.com/shazow/urllib3/blob/master/LICENSE.txt)
 
+
 - [lz-string](http://pieroxy.net/blog/pages/lz-string/index.html)
 
     Copyright 2013 Pieroxy
     [WTFPL License](http://pieroxy.net/blog/pages/lz-string/index.html#inline_menu_10)
 
+
 - [pako](http://nodeca.github.io/pako/)
 
     Copyright 2014-2017 Vitaly Puzrin and Andrei Tuputcyn
     [MIT License](https://github.com/nodeca/pako/blob/master/LICENSE)
 
+
 - [clipboard-polyfill](https://github.com/lgarron/clipboard-polyfill)
 
     Copyright (c) 2014 Lucas Garron
     [MIT License](https://github.com/lgarron/clipboard-polyfill/blob/master/LICENSE.md)
-    
-- [d3pie](https://github.com/benkeen/d3pie)
 
-    Copyright (c) 2014-2015 Benjamin Keen
-    [MIT License](https://github.com/benkeen/d3pie/blob/master/LICENSE)
-    
\ No newline at end of file
+
+- [Utilities for writing code that runs on Python 2 and 3](https://github.com/netdata/netdata/blob/master/python.d/python_modules/urllib3/packages/six.py)
+
+    Copyright (c) 2010-2015 Benjamin Peterson
+    [MIT License](https://github.com/netdata/netdata/blob/master/python.d/python_modules/urllib3/packages/six.py)
+
+
+- [mcrcon](https://github.com/barneygale/MCRcon)
+
+    Copyright (C) 2015 Barnaby Gale
+    [MIT License](https://raw.githubusercontent.com/barneygale/MCRcon/master/COPYING.txt)
+
+- [monotonic](https://github.com/atdt/monotonic)
+
+    Copyright 2014, 2015, 2016 Ori Livneh <ori@wikimedia.org>
+    [Apache-2.0](http://www.apache.org/licenses/LICENSE-2.0)
diff --git a/aclocal.m4 b/aclocal.m4
index 58b64dc77..d072284de 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1343,13 +1343,13 @@ AC_SUBST([am__tar])
 AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
-m4_include([m4/ax_c___atomic.m4])
-m4_include([m4/ax_c__generic.m4])
-m4_include([m4/ax_c_lto.m4])
-m4_include([m4/ax_c_mallinfo.m4])
-m4_include([m4/ax_c_mallopt.m4])
-m4_include([m4/ax_check_compile_flag.m4])
-m4_include([m4/ax_gcc_func_attribute.m4])
-m4_include([m4/ax_pthread.m4])
-m4_include([m4/jemalloc.m4])
-m4_include([m4/tcmalloc.m4])
+m4_include([build/m4/ax_c___atomic.m4])
+m4_include([build/m4/ax_c__generic.m4])
+m4_include([build/m4/ax_c_lto.m4])
+m4_include([build/m4/ax_c_mallinfo.m4])
+m4_include([build/m4/ax_c_mallopt.m4])
+m4_include([build/m4/ax_check_compile_flag.m4])
+m4_include([build/m4/ax_gcc_func_attribute.m4])
+m4_include([build/m4/ax_pthread.m4])
+m4_include([build/m4/jemalloc.m4])
+m4_include([build/m4/tcmalloc.m4])
diff --git a/autogen.sh b/autogen.sh
deleted file mode 100755
index 38e2ed159..000000000
--- a/autogen.sh
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/usr/bin/env sh
-autoreconf -ivf
diff --git a/backends/Makefile.am b/backends/Makefile.am
new file mode 100644
index 000000000..268259edd
--- /dev/null
+++ b/backends/Makefile.am
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    graphite \
+    json \
+    opentsdb \
+    prometheus \
+	$(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+dist_noinst_SCRIPTS = \
+	nc-backend.sh \
+	$(NULL)
diff --git a/backends/Makefile.in b/backends/Makefile.in
new file mode 100644
index 000000000..c2484e96a
--- /dev/null
+++ b/backends/Makefile.in
@@ -0,0 +1,657 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+
+VPATH = @srcdir@
+am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
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+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-recursive
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info: info-recursive
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(am__recursive_targets) install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-am clean clean-generic cscopelist-am ctags ctags-am \
+	distclean distclean-generic distclean-tags distdir dvi dvi-am \
+	html html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/backends/README.md b/backends/README.md
new file mode 100644
index 000000000..b449f060f
--- /dev/null
+++ b/backends/README.md
@@ -0,0 +1,199 @@
+
+# Metrics Long Term Archiving
+
+netdata supports backends for archiving the metrics, or providing long term dashboards,
+using Grafana or other tools, like this:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/20649711/29f182ba-b4ce-11e6-97c8-ab2c0ab59833.png)
+
+Since netdata collects thousands of metrics per server per second, which would easily congest any backend
+server when several netdata servers are sending data to it, netdata allows sending metrics at a lower
+frequency, by resampling them.
+
+So, although netdata collects metrics every second, it can send to the backend servers averages or sums every
+X seconds (though, it can send them per second if you need it to).
+
+## features
+
+1. Supported backends
+
+   - **graphite** (`plaintext interface`, used by **Graphite**, **InfluxDB**, **KairosDB**,
+     **Blueflood**, **ElasticSearch** via logstash tcp input and the graphite codec, etc)
+
+     metrics are sent to the backend server as `prefix.hostname.chart.dimension`. `prefix` is
+     configured below, `hostname` is the hostname of the machine (can also be configured).
+
+   - **opentsdb** (`telnet interface`, used by **OpenTSDB**, **InfluxDB**, **KairosDB**, etc)
+
+     metrics are sent to opentsdb as `prefix.chart.dimension` with tag `host=hostname`.
+
+   - **json** document DBs
+
+     metrics are sent to a document db, `JSON` formatted.
+
+   - **prometheus** is described at [prometheus page](prometheus/) since it pulls data from netdata.
+
+2. Only one backend may be active at a time.
+
+3. Netdata can filter metrics (at the chart level), to send only a subset of the collected metrics.
+
+4. Three modes of operation (for all backends):
+
+   - `as collected`: the latest collected value is sent to the backend. This means that if netdata
+     is configured to send data to the backend every 10 seconds, only 1 out of 10 values will appear
+     at the backend server. The values are sent exactly as collected, before any multipliers or
+     dividers applied and before any interpolation. This mode emulates other data collectors,
+     such as `collectd` or `telegraf`.
+
+   - `average`: the average of the interpolated values shown on the netdata graphs is sent to the
+     backend. So, if netdata is configured to send data to the backend server every 10 seconds,
+     the average of the 10 values shown on the netdata charts will be used. **If you can't decide
+      which mode to use, use `average`.**
+
+   - `sum` or `volume`: the sum of the interpolated values shown on the netdata graphs is sent to
+     the backend. So, if netdata is configured to send data to the backend every 10 seconds, the
+     sum of the 10 values shown on the netdata charts will be used.
+
+5. This code is smart enough, not to slow down netdata, independently of the speed of the backend server.
+
+## configuration
+
+In `/etc/netdata/netdata.conf` you should have something like this (if not download the latest version
+of `netdata.conf` from your netdata):
+
+```
+[backend]
+    enabled = yes | no
+    type = graphite | opentsdb | json
+    host tags = list of TAG=VALUE
+    destination = space separated list of [PROTOCOL:]HOST[:PORT] - the first working will be used
+    data source = average | sum | as collected
+    prefix = netdata
+    hostname = my-name
+    update every = 10
+    buffer on failures = 10
+    timeout ms = 20000
+    send charts matching = *
+    send hosts matching = localhost *
+    send names instead of ids = yes
+```
+
+- `enabled = yes | no`, enables or disables sending data to a backend
+
+- `type = graphite | opentsdb | json`, selects the backend type
+
+- `destination = host1 host2 host3 ...`, accepts **a space separated list** of hostnames,
+   IPs (IPv4 and IPv6) and ports to connect to.
+   Netdata will use the **first available** to send the metrics.
+
+   The format of each item in this list, is: `[PROTOCOL:]IP[:PORT]`.
+
+   `PROTOCOL` can be `udp` or `tcp`. `tcp` is the default and only supported by the current backends.
+
+   `IP` can be `XX.XX.XX.XX` (IPv4), or `[XX:XX...XX:XX]` (IPv6).
+   For IPv6 you can to enclose the IP in `[]` to separate it from the port.
+
+   `PORT` can be a number of a service name. If omitted, the default port for the backend will be used
+   (graphite = 2003, opentsdb = 4242).
+
+   Example IPv4:
+
+```
+   destination = 10.11.14.2:4242 10.11.14.3:4242 10.11.14.4:4242
+```
+
+   Example IPv6 and IPv4 together:
+   
+```
+   destination = [ffff:...:0001]:2003 10.11.12.1:2003
+```
+
+   When multiple servers are defined, netdata will try the next one when the first one fails. This allows
+   you to load-balance different servers: give your backend servers in different order on each netdata.
+
+   netdata also ships [`nc-backend.sh`](nc-backend.sh),
+   a script that can be used as a fallback backend to save the metrics to disk and push them to the
+   time-series database when it becomes available again. It can also be used to monitor / trace / debug
+   the metrics netdata generates.
+
+- `data source = as collected`, or `data source = average`, or `data source = sum`, selects the kind of
+   data that will be sent to the backend.
+
+- `hostname = my-name`, is the hostname to be used for sending data to the backend server. By default
+   this is `[global].hostname`.
+
+- `prefix = netdata`, is the prefix to add to all metrics.
+
+- `update every = 10`, is the number of seconds between sending data to the backend. netdata will add
+   some randomness to this number, to prevent stressing the backend server when many netdata servers send
+   data to the same backend. This randomness does not affect the quality of the data, only the time they
+   are sent.
+
+- `buffer on failures = 10`, is the number of iterations (each iteration is `[backend].update every` seconds)
+   to buffer data, when the backend is not available. If the backend fails to receive the data after that
+   many failures, data loss on the backend is expected (netdata will also log it).
+
+- `timeout ms = 20000`, is the timeout in milliseconds to wait for the backend server to process the data.
+   By default this is `2 * update_every * 1000`.
+
+- `send hosts matching = localhost *` includes one or more space separated patterns, using ` * ` as wildcard
+   (any number of times within each pattern). The patterns are checked against the hostname (the localhost
+   is always checked as `localhost`), allowing us to filter which hosts will be sent to the backend when
+   this netdata is a central netdata aggregating multiple hosts. A pattern starting with ` ! ` gives a
+   negative match. So to match all hosts named `*db*` except hosts containing `*slave*`, use
+   `!*slave* *db*` (so, the order is important: the first pattern matching the hostname will be used - positive
+   or negative).
+
+- `send charts matching = *` includes one or more space separated patterns, using ` * ` as wildcard (any
+   number of times within each pattern). The patterns are checked against both chart id and chart name.
+   A pattern starting with ` ! ` gives a negative match. So to match all charts named `apps.*`
+   except charts ending in `*reads`, use `!*reads apps.*` (so, the order is important: the first pattern
+   matching the chart id or the chart name will be used - positive or negative).
+
+- `send names instead of ids = yes | no` controls the metric names netdata should send to backend.
+   netdata supports names and IDs for charts and dimensions. Usually IDs are unique identifiers as read
+   by the system and names are human friendly labels (also unique). Most charts and metrics have the same
+   ID and name, but in several cases they are different: disks with device-mapper, interrupts, QoS classes,
+   statsd synthetic charts, etc.
+
+- `host tags = list of TAG=VALUE` defines tags that should be appended on all metrics for the given host.
+   These are currently only sent to opentsdb and prometheus. Please use the appropriate format for each
+   time-series db. For example opentsdb likes them like `TAG1=VALUE1 TAG2=VALUE2`, but prometheus like
+   `tag1="value1",tag2="value2"`. Host tags are mirrored with database replication (streaming of metrics
+   between netdata servers).
+
+## monitoring operation
+
+netdata provides 5 charts:
+
+1. **Buffered metrics**, the number of metrics netdata added to the buffer for dispatching them to the
+   backend server.
+   
+2. **Buffered data size**, the amount of data (in KB) netdata added the buffer.
+
+3. ~~**Backend latency**, the time the backend server needed to process the data netdata sent.
+   If there was a re-connection involved, this includes the connection time.~~
+   (this chart has been removed, because it only measures the time netdata needs to give the data
+   to the O/S - since the backend servers do not ack the reception, netdata does not have any means
+   to measure this properly).
+   
+4. **Backend operations**, the number of operations performed by netdata.
+
+5. **Backend thread CPU usage**, the CPU resources consumed by the netdata thread, that is responsible
+   for sending the metrics to the backend server.
+
+![image](https://cloud.githubusercontent.com/assets/2662304/20463536/eb196084-af3d-11e6-8ee5-ddbd3b4d8449.png)
+
+## alarms
+
+The latest version of the alarms configuration for monitoring the backend is [here](../health/health.d/backend.conf)
+
+netdata adds 4 alarms:
+
+1. `backend_last_buffering`, number of seconds since the last successful buffering of backend data
+2. `backend_metrics_sent`, percentage of metrics sent to the backend server
+3. `backend_metrics_lost`, number of metrics lost due to repeating failures to contact the backend server
+4. ~~`backend_slow`, the percentage of time between iterations needed by the backend time to process the data sent by netdata~~ (this was misleading and has been removed).
+
+![image](https://cloud.githubusercontent.com/assets/2662304/20463779/a46ed1c2-af43-11e6-91a5-07ca4533cac3.png)
+
diff --git a/src/backends.c b/backends/backends.c
index 1360638f2..53a9a2395 100644
--- a/src/backends.c
+++ b/backends/backends.c
@@ -1,4 +1,7 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define BACKENDS_INTERNALS
+#include "backends.h"
 
 // ----------------------------------------------------------------------------
 // How backends work in netdata:
@@ -22,15 +25,14 @@
 // 5. repeats the above forever.
 //
 
-const char *backend_prefix = "netdata";
-int backend_send_names = 1;
-int backend_update_every = 10;
-uint32_t backend_options = BACKEND_SOURCE_DATA_AVERAGE;
+const char *global_backend_prefix = "netdata";
+int global_backend_update_every = 10;
+BACKEND_OPTIONS global_backend_options = BACKEND_SOURCE_DATA_AVERAGE | BACKEND_OPTION_SEND_NAMES;
 
 // ----------------------------------------------------------------------------
 // helper functions for backends
 
-static inline size_t backend_name_copy(char *d, const char *s, size_t usable) {
+size_t backend_name_copy(char *d, const char *s, size_t usable) {
     size_t n;
 
     for(n = 0; *s && n < usable ; d++, s++, n++) {
@@ -47,16 +49,17 @@ static inline size_t backend_name_copy(char *d, const char *s, size_t usable) {
 // calculate the SUM or AVERAGE of a dimension, for any timeframe
 // may return NAN if the database does not have any value in the give timeframe
 
-inline calculated_number backend_calculate_value_from_stored_data(
+calculated_number backend_calculate_value_from_stored_data(
           RRDSET *st                // the chart
         , RRDDIM *rd                // the dimension
         , time_t after              // the start timestamp
         , time_t before             // the end timestamp
-        , uint32_t options          // BACKEND_SOURCE_* bitmap
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
         , time_t *first_timestamp   // the first point of the database used in this response
         , time_t *last_timestamp    // the timestamp that should be reported to backend
 ) {
     RRDHOST *host = st->rrdhost;
+    (void)host;
 
     // find the edges of the rrd database for this chart
     time_t first_t = rrdset_first_entry_t(st);
@@ -132,7 +135,7 @@ inline calculated_number backend_calculate_value_from_stored_data(
         return NAN;
     }
 
-    if(unlikely((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_SUM))
+    if(unlikely(BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_SUM))
         return sum;
 
     return sum / (calculated_number)counter;
@@ -142,7 +145,7 @@ inline calculated_number backend_calculate_value_from_stored_data(
 // discard a response received by a backend
 // after logging a simple of it to error.log
 
-static inline int discard_response(BUFFER *b, const char *backend) {
+int discard_response(BUFFER *b, const char *backend) {
     char sample[1024];
     const char *s = buffer_tostring(b);
     char *d = sample, *e = &sample[sizeof(sample) - 1];
@@ -161,328 +164,14 @@ static inline int discard_response(BUFFER *b, const char *backend) {
 
 
 // ----------------------------------------------------------------------------
-// graphite backend
-
-static inline int format_dimension_collected_graphite_plaintext(
-          BUFFER *b                 // the buffer to write data to
-        , const char *prefix        // the prefix to use
-        , RRDHOST *host             // the host this chart comes from
-        , const char *hostname      // the hostname (to override host->hostname)
-        , RRDSET *st                // the chart
-        , RRDDIM *rd                // the dimension
-        , time_t after              // the start timestamp
-        , time_t before             // the end timestamp
-        , uint32_t options          // BACKEND_SOURCE_* bitmap
-) {
-    (void)host;
-    (void)after;
-    (void)before;
-    (void)options;
-
-    char chart_name[RRD_ID_LENGTH_MAX + 1];
-    char dimension_name[RRD_ID_LENGTH_MAX + 1];
-    backend_name_copy(chart_name, (backend_send_names && st->name)?st->name:st->id, RRD_ID_LENGTH_MAX);
-    backend_name_copy(dimension_name, (backend_send_names && rd->name)?rd->name:rd->id, RRD_ID_LENGTH_MAX);
-
-    buffer_sprintf(
-            b
-            , "%s.%s.%s.%s " COLLECTED_NUMBER_FORMAT " %u\n"
-            , prefix
-            , hostname
-            , chart_name
-            , dimension_name
-            , rd->last_collected_value
-            , (uint32_t)rd->last_collected_time.tv_sec
-    );
-
-    return 1;
-}
-
-static inline int format_dimension_stored_graphite_plaintext(
-          BUFFER *b                 // the buffer to write data to
-        , const char *prefix        // the prefix to use
-        , RRDHOST *host             // the host this chart comes from
-        , const char *hostname      // the hostname (to override host->hostname)
-        , RRDSET *st                // the chart
-        , RRDDIM *rd                // the dimension
-        , time_t after              // the start timestamp
-        , time_t before             // the end timestamp
-        , uint32_t options          // BACKEND_SOURCE_* bitmap
-) {
-    (void)host;
-
-    char chart_name[RRD_ID_LENGTH_MAX + 1];
-    char dimension_name[RRD_ID_LENGTH_MAX + 1];
-    backend_name_copy(chart_name, (backend_send_names && st->name)?st->name:st->id, RRD_ID_LENGTH_MAX);
-    backend_name_copy(dimension_name, (backend_send_names && rd->name)?rd->name:rd->id, RRD_ID_LENGTH_MAX);
-
-    time_t first_t = after, last_t = before;
-    calculated_number value = backend_calculate_value_from_stored_data(st, rd, after, before, options, &first_t, &last_t);
-
-    if(!isnan(value)) {
-
-        buffer_sprintf(
-                b
-                , "%s.%s.%s.%s " CALCULATED_NUMBER_FORMAT " %u\n"
-                , prefix
-                , hostname
-                , chart_name
-                , dimension_name
-                , value
-                , (uint32_t) last_t
-        );
-
-        return 1;
-    }
-    return 0;
-}
-
-static inline int process_graphite_response(BUFFER *b) {
-    return discard_response(b, "graphite");
-}
-
-
-// ----------------------------------------------------------------------------
-// opentsdb backend
-
-static inline int format_dimension_collected_opentsdb_telnet(
-          BUFFER *b                 // the buffer to write data to
-        , const char *prefix        // the prefix to use
-        , RRDHOST *host             // the host this chart comes from
-        , const char *hostname      // the hostname (to override host->hostname)
-        , RRDSET *st                // the chart
-        , RRDDIM *rd                // the dimension
-        , time_t after              // the start timestamp
-        , time_t before             // the end timestamp
-        , uint32_t options          // BACKEND_SOURCE_* bitmap
-) {
-    (void)host;
-    (void)after;
-    (void)before;
-    (void)options;
-
-    char chart_name[RRD_ID_LENGTH_MAX + 1];
-    char dimension_name[RRD_ID_LENGTH_MAX + 1];
-    backend_name_copy(chart_name, (backend_send_names && st->name)?st->name:st->id, RRD_ID_LENGTH_MAX);
-    backend_name_copy(dimension_name, (backend_send_names && rd->name)?rd->name:rd->id, RRD_ID_LENGTH_MAX);
-
-    buffer_sprintf(
-            b
-            , "put %s.%s.%s %u " COLLECTED_NUMBER_FORMAT " host=%s%s%s\n"
-            , prefix
-            , chart_name
-            , dimension_name
-            , (uint32_t)rd->last_collected_time.tv_sec
-            , rd->last_collected_value
-            , hostname
-            , (host->tags)?" ":""
-            , (host->tags)?host->tags:""
-    );
-
-    return 1;
-}
-
-static inline int format_dimension_stored_opentsdb_telnet(
-          BUFFER *b                 // the buffer to write data to
-        , const char *prefix        // the prefix to use
-        , RRDHOST *host             // the host this chart comes from
-        , const char *hostname      // the hostname (to override host->hostname)
-        , RRDSET *st                // the chart
-        , RRDDIM *rd                // the dimension
-        , time_t after              // the start timestamp
-        , time_t before             // the end timestamp
-        , uint32_t options          // BACKEND_SOURCE_* bitmap
-) {
-    (void)host;
-
-    time_t first_t = after, last_t = before;
-    calculated_number value = backend_calculate_value_from_stored_data(st, rd, after, before, options, &first_t, &last_t);
-
-    char chart_name[RRD_ID_LENGTH_MAX + 1];
-    char dimension_name[RRD_ID_LENGTH_MAX + 1];
-    backend_name_copy(chart_name, (backend_send_names && st->name)?st->name:st->id, RRD_ID_LENGTH_MAX);
-    backend_name_copy(dimension_name, (backend_send_names && rd->name)?rd->name:rd->id, RRD_ID_LENGTH_MAX);
-
-    if(!isnan(value)) {
-
-        buffer_sprintf(
-                b
-                , "put %s.%s.%s %u " CALCULATED_NUMBER_FORMAT " host=%s%s%s\n"
-                , prefix
-                , chart_name
-                , dimension_name
-                , (uint32_t) last_t
-                , value
-                , hostname
-                , (host->tags)?" ":""
-                , (host->tags)?host->tags:""
-        );
-
-        return 1;
-    }
-    return 0;
-}
-
-static inline int process_opentsdb_response(BUFFER *b) {
-    return discard_response(b, "opentsdb");
-}
-
-
-// ----------------------------------------------------------------------------
-// json backend
-
-static inline int format_dimension_collected_json_plaintext(
-          BUFFER *b                 // the buffer to write data to
-        , const char *prefix        // the prefix to use
-        , RRDHOST *host             // the host this chart comes from
-        , const char *hostname      // the hostname (to override host->hostname)
-        , RRDSET *st                // the chart
-        , RRDDIM *rd                // the dimension
-        , time_t after              // the start timestamp
-        , time_t before             // the end timestamp
-        , uint32_t options          // BACKEND_SOURCE_* bitmap
-) {
-    (void)host;
-    (void)after;
-    (void)before;
-    (void)options;
-
-    const char *tags_pre = "", *tags_post = "", *tags = host->tags;
-    if(!tags) tags = "";
-
-    if(*tags) {
-        if(*tags == '{' || *tags == '[' || *tags == '"') {
-            tags_pre = "\"host_tags\":";
-            tags_post = ",";
-        }
-        else {
-            tags_pre = "\"host_tags\":\"";
-            tags_post = "\",";
-        }
-    }
-
-    buffer_sprintf(b, "{"
-        "\"prefix\":\"%s\","
-        "\"hostname\":\"%s\","
-        "%s%s%s"
-
-        "\"chart_id\":\"%s\","
-        "\"chart_name\":\"%s\","
-        "\"chart_family\":\"%s\","
-        "\"chart_context\": \"%s\","
-        "\"chart_type\":\"%s\","
-        "\"units\": \"%s\","
-
-        "\"id\":\"%s\","
-        "\"name\":\"%s\","
-        "\"value\":" COLLECTED_NUMBER_FORMAT ","
-
-        "\"timestamp\": %u}\n",
-            prefix,
-            hostname,
-            tags_pre, tags, tags_post,
-
-            st->id,
-            st->name,
-            st->family,
-            st->context,
-            st->type,
-            st->units,
-
-            rd->id,
-            rd->name,
-            rd->last_collected_value,
-
-            (uint32_t)rd->last_collected_time.tv_sec
-    );
-
-    return 1;
-}
-
-static inline int format_dimension_stored_json_plaintext(
-          BUFFER *b                 // the buffer to write data to
-        , const char *prefix        // the prefix to use
-        , RRDHOST *host             // the host this chart comes from
-        , const char *hostname      // the hostname (to override host->hostname)
-        , RRDSET *st                // the chart
-        , RRDDIM *rd                // the dimension
-        , time_t after              // the start timestamp
-        , time_t before             // the end timestamp
-        , uint32_t options          // BACKEND_SOURCE_* bitmap
-) {
-    (void)host;
-
-    time_t first_t = after, last_t = before;
-    calculated_number value = backend_calculate_value_from_stored_data(st, rd, after, before, options, &first_t, &last_t);
-
-    if(!isnan(value)) {
-        const char *tags_pre = "", *tags_post = "", *tags = host->tags;
-        if(!tags) tags = "";
-
-        if(*tags) {
-            if(*tags == '{' || *tags == '[' || *tags == '"') {
-                tags_pre = "\"host_tags\":";
-                tags_post = ",";
-            }
-            else {
-                tags_pre = "\"host_tags\":\"";
-                tags_post = "\",";
-            }
-        }
-
-        buffer_sprintf(b, "{"
-            "\"prefix\":\"%s\","
-            "\"hostname\":\"%s\","
-            "%s%s%s"
-
-            "\"chart_id\":\"%s\","
-            "\"chart_name\":\"%s\","
-            "\"chart_family\":\"%s\","
-            "\"chart_context\": \"%s\","
-            "\"chart_type\":\"%s\","
-            "\"units\": \"%s\","
-
-            "\"id\":\"%s\","
-            "\"name\":\"%s\","
-            "\"value\":" CALCULATED_NUMBER_FORMAT ","
-
-            "\"timestamp\": %u}\n", 
-                prefix,
-                hostname,
-                tags_pre, tags, tags_post,
-
-                st->id,
-                st->name,
-                st->family,
-                st->context,
-                st->type,
-                st->units,
-
-                rd->id,
-                rd->name,
-                value, 
-                
-                (uint32_t) last_t
-        );
-        
-        return 1;
-    }
-    return 0;
-}
-
-static inline int process_json_response(BUFFER *b) {
-    return discard_response(b, "json");
-}
-
-
-// ----------------------------------------------------------------------------
 // the backend thread
 
 static SIMPLE_PATTERN *charts_pattern = NULL;
 static SIMPLE_PATTERN *hosts_pattern = NULL;
 
-inline int backends_can_send_rrdset(uint32_t options, RRDSET *st) {
+inline int backends_can_send_rrdset(BACKEND_OPTIONS backend_options, RRDSET *st) {
     RRDHOST *host = st->rrdhost;
+    (void)host;
 
     if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_BACKEND_IGNORE)))
         return 0;
@@ -503,7 +192,7 @@ inline int backends_can_send_rrdset(uint32_t options, RRDSET *st) {
         return 0;
     }
 
-    if(unlikely(st->rrd_memory_mode == RRD_MEMORY_MODE_NONE && !((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AS_COLLECTED))) {
+    if(unlikely(st->rrd_memory_mode == RRD_MEMORY_MODE_NONE && !(BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED))) {
         debug(D_BACKEND, "BACKEND: not sending chart '%s' of host '%s' because its memory mode is '%s' and the backend requires database access.", st->id, host->hostname, rrd_memory_mode_name(host->rrd_memory_mode));
         return 0;
     }
@@ -511,24 +200,24 @@ inline int backends_can_send_rrdset(uint32_t options, RRDSET *st) {
     return 1;
 }
 
-inline uint32_t backend_parse_data_source(const char *source, uint32_t mode) {
+inline BACKEND_OPTIONS backend_parse_data_source(const char *source, BACKEND_OPTIONS backend_options) {
     if(!strcmp(source, "raw") || !strcmp(source, "as collected") || !strcmp(source, "as-collected") || !strcmp(source, "as_collected") || !strcmp(source, "ascollected")) {
-        mode |= BACKEND_SOURCE_DATA_AS_COLLECTED;
-        mode &= ~(BACKEND_SOURCE_BITS ^ BACKEND_SOURCE_DATA_AS_COLLECTED);
+        backend_options |= BACKEND_SOURCE_DATA_AS_COLLECTED;
+        backend_options &= ~(BACKEND_OPTIONS_SOURCE_BITS ^ BACKEND_SOURCE_DATA_AS_COLLECTED);
     }
     else if(!strcmp(source, "average")) {
-        mode |= BACKEND_SOURCE_DATA_AVERAGE;
-        mode &= ~(BACKEND_SOURCE_BITS ^ BACKEND_SOURCE_DATA_AVERAGE);
+        backend_options |= BACKEND_SOURCE_DATA_AVERAGE;
+        backend_options &= ~(BACKEND_OPTIONS_SOURCE_BITS ^ BACKEND_SOURCE_DATA_AVERAGE);
     }
     else if(!strcmp(source, "sum") || !strcmp(source, "volume")) {
-        mode |= BACKEND_SOURCE_DATA_SUM;
-        mode &= ~(BACKEND_SOURCE_BITS ^ BACKEND_SOURCE_DATA_SUM);
+        backend_options |= BACKEND_SOURCE_DATA_SUM;
+        backend_options &= ~(BACKEND_OPTIONS_SOURCE_BITS ^ BACKEND_SOURCE_DATA_SUM);
     }
     else {
         error("BACKEND: invalid data source method '%s'.", source);
     }
 
-    return mode;
+    return backend_options;
 }
 
 static void backends_main_cleanup(void *ptr) {
@@ -546,7 +235,7 @@ void *backends_main(void *ptr) {
     int default_port = 0;
     int sock = -1;
     BUFFER *b = buffer_create(1), *response = buffer_create(1);
-    int (*backend_request_formatter)(BUFFER *, const char *, RRDHOST *, const char *, RRDSET *, RRDDIM *, time_t, time_t, uint32_t) = NULL;
+    int (*backend_request_formatter)(BUFFER *, const char *, RRDHOST *, const char *, RRDSET *, RRDDIM *, time_t, time_t, BACKEND_OPTIONS) = NULL;
     int (*backend_response_checker)(BUFFER *) = NULL;
 
     // ------------------------------------------------------------------------
@@ -556,35 +245,39 @@ void *backends_main(void *ptr) {
             .tv_sec = 0,
             .tv_usec = 0
     };
-    int enabled             = config_get_boolean(CONFIG_SECTION_BACKEND, "enabled", 0);
-    const char *source      = config_get(CONFIG_SECTION_BACKEND, "data source", "average");
-    const char *type        = config_get(CONFIG_SECTION_BACKEND, "type", "graphite");
-    const char *destination = config_get(CONFIG_SECTION_BACKEND, "destination", "localhost");
-    backend_prefix          = config_get(CONFIG_SECTION_BACKEND, "prefix", "netdata");
-    const char *hostname    = config_get(CONFIG_SECTION_BACKEND, "hostname", localhost->hostname);
-    backend_update_every    = (int)config_get_number(CONFIG_SECTION_BACKEND, "update every", backend_update_every);
-    int buffer_on_failures  = (int)config_get_number(CONFIG_SECTION_BACKEND, "buffer on failures", 10);
-    long timeoutms          = config_get_number(CONFIG_SECTION_BACKEND, "timeout ms", backend_update_every * 2 * 1000);
-    backend_send_names      = config_get_boolean(CONFIG_SECTION_BACKEND, "send names instead of ids", backend_send_names);
+    int enabled                 = config_get_boolean(CONFIG_SECTION_BACKEND, "enabled", 0);
+    const char *source          = config_get(CONFIG_SECTION_BACKEND, "data source", "average");
+    const char *type            = config_get(CONFIG_SECTION_BACKEND, "type", "graphite");
+    const char *destination     = config_get(CONFIG_SECTION_BACKEND, "destination", "localhost");
+    global_backend_prefix       = config_get(CONFIG_SECTION_BACKEND, "prefix", "netdata");
+    const char *hostname        = config_get(CONFIG_SECTION_BACKEND, "hostname", localhost->hostname);
+    global_backend_update_every = (int)config_get_number(CONFIG_SECTION_BACKEND, "update every", global_backend_update_every);
+    int buffer_on_failures      = (int)config_get_number(CONFIG_SECTION_BACKEND, "buffer on failures", 10);
+    long timeoutms              = config_get_number(CONFIG_SECTION_BACKEND, "timeout ms", global_backend_update_every * 2 * 1000);
+
+    if(config_get_boolean(CONFIG_SECTION_BACKEND, "send names instead of ids", (global_backend_options & BACKEND_OPTION_SEND_NAMES)))
+        global_backend_options |= BACKEND_OPTION_SEND_NAMES;
+    else
+        global_backend_options &= ~BACKEND_OPTION_SEND_NAMES;
 
     charts_pattern = simple_pattern_create(config_get(CONFIG_SECTION_BACKEND, "send charts matching", "*"), NULL, SIMPLE_PATTERN_EXACT);
-    hosts_pattern = simple_pattern_create(config_get(CONFIG_SECTION_BACKEND, "send hosts matching", "localhost *"), NULL, SIMPLE_PATTERN_EXACT);
+    hosts_pattern  = simple_pattern_create(config_get(CONFIG_SECTION_BACKEND, "send hosts matching", "localhost *"), NULL, SIMPLE_PATTERN_EXACT);
 
 
     // ------------------------------------------------------------------------
     // validate configuration options
     // and prepare for sending data to our backend
 
-    backend_options = backend_parse_data_source(source, backend_options);
+    global_backend_options = backend_parse_data_source(source, global_backend_options);
 
     if(timeoutms < 1) {
-        error("BACKEND: invalid timeout %ld ms given. Assuming %d ms.", timeoutms, backend_update_every * 2 * 1000);
-        timeoutms = backend_update_every * 2 * 1000;
+        error("BACKEND: invalid timeout %ld ms given. Assuming %d ms.", timeoutms, global_backend_update_every * 2 * 1000);
+        timeoutms = global_backend_update_every * 2 * 1000;
     }
     timeout.tv_sec  = (timeoutms * 1000) / 1000000;
     timeout.tv_usec = (timeoutms * 1000) % 1000000;
 
-    if(!enabled || backend_update_every < 1)
+    if(!enabled || global_backend_update_every < 1)
         goto cleanup;
 
     // ------------------------------------------------------------------------
@@ -595,7 +288,7 @@ void *backends_main(void *ptr) {
         default_port = 2003;
         backend_response_checker = process_graphite_response;
 
-        if((backend_options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AS_COLLECTED)
+        if(BACKEND_OPTIONS_DATA_SOURCE(global_backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED)
             backend_request_formatter = format_dimension_collected_graphite_plaintext;
         else
             backend_request_formatter = format_dimension_stored_graphite_plaintext;
@@ -606,7 +299,7 @@ void *backends_main(void *ptr) {
         default_port = 4242;
         backend_response_checker = process_opentsdb_response;
 
-        if((backend_options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AS_COLLECTED)
+        if(BACKEND_OPTIONS_DATA_SOURCE(global_backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED)
             backend_request_formatter = format_dimension_collected_opentsdb_telnet;
         else
             backend_request_formatter = format_dimension_stored_opentsdb_telnet;
@@ -617,7 +310,7 @@ void *backends_main(void *ptr) {
         default_port = 5448;
         backend_response_checker = process_json_response;
 
-        if ((backend_options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AS_COLLECTED)
+        if (BACKEND_OPTIONS_DATA_SOURCE(global_backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED)
             backend_request_formatter = format_dimension_collected_json_plaintext;
         else
             backend_request_formatter = format_dimension_stored_json_plaintext;
@@ -651,21 +344,21 @@ void *backends_main(void *ptr) {
             chart_transmission_failures = 0,
             chart_data_lost_events = 0,
             chart_lost_bytes = 0,
-            chart_backend_reconnects = 0,
-            chart_backend_latency = 0;
+            chart_backend_reconnects = 0;
+            // chart_backend_latency = 0;
 
-    RRDSET *chart_metrics = rrdset_create_localhost("netdata", "backend_metrics", NULL, "backend", NULL, "Netdata Buffered Metrics", "metrics", "backends", NULL, 130600, backend_update_every, RRDSET_TYPE_LINE);
+    RRDSET *chart_metrics = rrdset_create_localhost("netdata", "backend_metrics", NULL, "backend", NULL, "Netdata Buffered Metrics", "metrics", "backends", NULL, 130600, global_backend_update_every, RRDSET_TYPE_LINE);
     rrddim_add(chart_metrics, "buffered", NULL,  1, 1, RRD_ALGORITHM_ABSOLUTE);
     rrddim_add(chart_metrics, "lost",     NULL,  1, 1, RRD_ALGORITHM_ABSOLUTE);
     rrddim_add(chart_metrics, "sent",     NULL,  1, 1, RRD_ALGORITHM_ABSOLUTE);
 
-    RRDSET *chart_bytes = rrdset_create_localhost("netdata", "backend_bytes", NULL, "backend", NULL, "Netdata Backend Data Size", "KB", "backends", NULL, 130610, backend_update_every, RRDSET_TYPE_AREA);
+    RRDSET *chart_bytes = rrdset_create_localhost("netdata", "backend_bytes", NULL, "backend", NULL, "Netdata Backend Data Size", "KB", "backends", NULL, 130610, global_backend_update_every, RRDSET_TYPE_AREA);
     rrddim_add(chart_bytes, "buffered", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
     rrddim_add(chart_bytes, "lost",     NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
     rrddim_add(chart_bytes, "sent",     NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
     rrddim_add(chart_bytes, "received", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 
-    RRDSET *chart_ops = rrdset_create_localhost("netdata", "backend_ops", NULL, "backend", NULL, "Netdata Backend Operations", "operations", "backends", NULL, 130630, backend_update_every, RRDSET_TYPE_LINE);
+    RRDSET *chart_ops = rrdset_create_localhost("netdata", "backend_ops", NULL, "backend", NULL, "Netdata Backend Operations", "operations", "backends", NULL, 130630, global_backend_update_every, RRDSET_TYPE_LINE);
     rrddim_add(chart_ops, "write",     NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
     rrddim_add(chart_ops, "discard",   NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
     rrddim_add(chart_ops, "reconnect", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
@@ -679,11 +372,11 @@ void *backends_main(void *ptr) {
      *
      * issue #1432 and https://www.softlab.ntua.gr/facilities/documentation/unix/unix-socket-faq/unix-socket-faq-2.html
      *
-    RRDSET *chart_latency = rrdset_create_localhost("netdata", "backend_latency", NULL, "backend", NULL, "Netdata Backend Latency", "ms", "backends", NULL, 130620, backend_update_every, RRDSET_TYPE_AREA);
+    RRDSET *chart_latency = rrdset_create_localhost("netdata", "backend_latency", NULL, "backend", NULL, "Netdata Backend Latency", "ms", "backends", NULL, 130620, global_backend_update_every, RRDSET_TYPE_AREA);
     rrddim_add(chart_latency, "latency",   NULL,  1, 1000, RRD_ALGORITHM_ABSOLUTE);
     */
 
-    RRDSET *chart_rusage = rrdset_create_localhost("netdata", "backend_thread_cpu", NULL, "backend", NULL, "NetData Backend Thread CPU usage", "milliseconds/s", "backends", NULL, 130630, backend_update_every, RRDSET_TYPE_STACKED);
+    RRDSET *chart_rusage = rrdset_create_localhost("netdata", "backend_thread_cpu", NULL, "backend", NULL, "NetData Backend Thread CPU usage", "milliseconds/s", "backends", NULL, 130630, global_backend_update_every, RRDSET_TYPE_STACKED);
     rrddim_add(chart_rusage, "user",   NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
     rrddim_add(chart_rusage, "system", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
 
@@ -691,9 +384,9 @@ void *backends_main(void *ptr) {
     // ------------------------------------------------------------------------
     // prepare the backend main loop
 
-    info("BACKEND: configured ('%s' on '%s' sending '%s' data, every %d seconds, as host '%s', with prefix '%s')", type, destination, source, backend_update_every, hostname, backend_prefix);
+    info("BACKEND: configured ('%s' on '%s' sending '%s' data, every %d seconds, as host '%s', with prefix '%s')", type, destination, source, global_backend_update_every, hostname, global_backend_prefix);
 
-    usec_t step_ut = backend_update_every * USEC_PER_SEC;
+    usec_t step_ut = global_backend_update_every * USEC_PER_SEC;
     time_t after = now_realtime_sec();
     int failures = 0;
     heartbeat_t hb;
@@ -746,7 +439,7 @@ void *backends_main(void *ptr) {
 
             RRDSET *st;
             rrdset_foreach_read(st, host) {
-                if(likely(backends_can_send_rrdset(backend_options, st))) {
+                if(likely(backends_can_send_rrdset(global_backend_options, st))) {
                     rrdset_rdlock(st);
 
                     count_charts++;
@@ -754,7 +447,7 @@ void *backends_main(void *ptr) {
                     RRDDIM *rd;
                     rrddim_foreach_read(rd, st) {
                         if (likely(rd->last_collected_time.tv_sec >= after)) {
-                            chart_buffered_metrics += backend_request_formatter(b, backend_prefix, host, __hostname, st, rd, after, before, backend_options);
+                            chart_buffered_metrics += backend_request_formatter(b, global_backend_prefix, host, __hostname, st, rd, after, before, global_backend_options);
                             count_dims++;
                         }
                         else {
@@ -792,12 +485,12 @@ void *backends_main(void *ptr) {
         chart_transmission_failures =
         chart_data_lost_events =
         chart_lost_bytes =
-        chart_backend_reconnects =
-        chart_backend_latency = 0;
+        chart_backend_reconnects = 0;
+        // chart_backend_latency = 0;
 
         if(unlikely(netdata_exit)) break;
 
-        //fprintf(stderr, "\nBACKEND BEGIN:\n%s\nBACKEND END\n", buffer_tostring(b)); // FIXME
+        //fprintf(stderr, "\nBACKEND BEGIN:\n%s\nBACKEND END\n", buffer_tostring(b));
         //fprintf(stderr, "after = %lu, before = %lu\n", after, before);
 
         // prepare for the next iteration
@@ -843,13 +536,13 @@ void *backends_main(void *ptr) {
         // if we are not connected, connect to a backend server
 
         if(unlikely(sock == -1)) {
-            usec_t start_ut = now_monotonic_usec();
+            // usec_t start_ut = now_monotonic_usec();
             size_t reconnects = 0;
 
             sock = connect_to_one_of(destination, default_port, &timeout, &reconnects, NULL, 0);
 
             chart_backend_reconnects += reconnects;
-            chart_backend_latency += now_monotonic_usec() - start_ut;
+            // chart_backend_latency += now_monotonic_usec() - start_ut;
         }
 
         if(unlikely(netdata_exit)) break;
@@ -859,14 +552,14 @@ void *backends_main(void *ptr) {
 
         if(likely(sock != -1)) {
             size_t len = buffer_strlen(b);
-            usec_t start_ut = now_monotonic_usec();
+            // usec_t start_ut = now_monotonic_usec();
             int flags = 0;
 #ifdef MSG_NOSIGNAL
             flags += MSG_NOSIGNAL;
 #endif
 
             ssize_t written = send(sock, buffer_tostring(b), len, flags);
-            chart_backend_latency += now_monotonic_usec() - start_ut;
+            // chart_backend_latency += now_monotonic_usec() - start_ut;
             if(written != -1 && (size_t)written == len) {
                 // we sent the data successfully
                 chart_transmission_successes++;
diff --git a/backends/backends.h b/backends/backends.h
new file mode 100644
index 000000000..468e4fed8
--- /dev/null
+++ b/backends/backends.h
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_BACKENDS_H
+#define NETDATA_BACKENDS_H 1
+
+#include "daemon/common.h"
+
+typedef enum backend_options {
+    BACKEND_OPTION_NONE              = 0,
+
+    BACKEND_SOURCE_DATA_AS_COLLECTED = (1 << 0),
+    BACKEND_SOURCE_DATA_AVERAGE      = (1 << 1),
+    BACKEND_SOURCE_DATA_SUM          = (1 << 2),
+
+    BACKEND_OPTION_SEND_NAMES        = (1 << 16)
+} BACKEND_OPTIONS;
+
+#define BACKEND_OPTIONS_SOURCE_BITS (BACKEND_SOURCE_DATA_AS_COLLECTED|BACKEND_SOURCE_DATA_AVERAGE|BACKEND_SOURCE_DATA_SUM)
+#define BACKEND_OPTIONS_DATA_SOURCE(backend_options) (backend_options & BACKEND_OPTIONS_SOURCE_BITS)
+
+extern int global_backend_update_every;
+extern BACKEND_OPTIONS global_backend_options;
+extern const char *global_backend_prefix;
+
+extern void *backends_main(void *ptr);
+
+extern BACKEND_OPTIONS backend_parse_data_source(const char *source, BACKEND_OPTIONS backend_options);
+
+#ifdef BACKENDS_INTERNALS
+
+extern int backends_can_send_rrdset(BACKEND_OPTIONS backend_options, RRDSET *st);
+extern calculated_number backend_calculate_value_from_stored_data(
+        RRDSET *st                  // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options  // BACKEND_SOURCE_* bitmap
+        , time_t *first_timestamp   // the timestamp of the first point used in this response
+        , time_t *last_timestamp    // the timestamp that should be reported to backend
+);
+
+extern size_t backend_name_copy(char *d, const char *s, size_t usable);
+extern int discard_response(BUFFER *b, const char *backend);
+
+#endif // BACKENDS_INTERNALS
+
+#include "backends/prometheus/backend_prometheus.h"
+#include "backends/graphite/graphite.h"
+#include "backends/json/json.h"
+#include "backends/opentsdb/opentsdb.h"
+
+#endif /* NETDATA_BACKENDS_H */
diff --git a/backends/graphite/Makefile.am b/backends/graphite/Makefile.am
new file mode 100644
index 000000000..babdcf0df
--- /dev/null
+++ b/backends/graphite/Makefile.am
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
diff --git a/backends/graphite/Makefile.in b/backends/graphite/Makefile.in
new file mode 100644
index 000000000..c214a0e75
--- /dev/null
+++ b/backends/graphite/Makefile.in
@@ -0,0 +1,457 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+VPATH = @srcdir@
+am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
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+.SUFFIXES:
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+	  case '$(am__configure_deps)' in \
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+	      exit 1;; \
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+	done; \
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+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu backends/graphite/Makefile
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+	@case '$?' in \
+	  *config.status*) \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+	fi
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diff --git a/backends/graphite/graphite.c b/backends/graphite/graphite.c
new file mode 100644
index 000000000..805703893
--- /dev/null
+++ b/backends/graphite/graphite.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define BACKENDS_INTERNALS
+#include "graphite.h"
+
+// ----------------------------------------------------------------------------
+// graphite backend
+
+int format_dimension_collected_graphite_plaintext(
+        BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+) {
+    (void)host;
+    (void)after;
+    (void)before;
+
+    char chart_name[RRD_ID_LENGTH_MAX + 1];
+    char dimension_name[RRD_ID_LENGTH_MAX + 1];
+    backend_name_copy(chart_name, (backend_options & BACKEND_OPTION_SEND_NAMES && st->name)?st->name:st->id, RRD_ID_LENGTH_MAX);
+    backend_name_copy(dimension_name, (backend_options & BACKEND_OPTION_SEND_NAMES && rd->name)?rd->name:rd->id, RRD_ID_LENGTH_MAX);
+
+    buffer_sprintf(
+            b
+            , "%s.%s.%s.%s%s%s " COLLECTED_NUMBER_FORMAT " %llu\n"
+            , prefix
+            , hostname
+            , chart_name
+            , dimension_name
+            , (host->tags)?";":""
+            , (host->tags)?host->tags:""
+            , rd->last_collected_value
+            , (unsigned long long)rd->last_collected_time.tv_sec
+    );
+
+    return 1;
+}
+
+int format_dimension_stored_graphite_plaintext(
+        BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+) {
+    (void)host;
+
+    char chart_name[RRD_ID_LENGTH_MAX + 1];
+    char dimension_name[RRD_ID_LENGTH_MAX + 1];
+    backend_name_copy(chart_name, (backend_options & BACKEND_OPTION_SEND_NAMES && st->name)?st->name:st->id, RRD_ID_LENGTH_MAX);
+    backend_name_copy(dimension_name, (backend_options & BACKEND_OPTION_SEND_NAMES && rd->name)?rd->name:rd->id, RRD_ID_LENGTH_MAX);
+
+    time_t first_t = after, last_t = before;
+    calculated_number value = backend_calculate_value_from_stored_data(st, rd, after, before, backend_options, &first_t, &last_t);
+
+    if(!isnan(value)) {
+
+        buffer_sprintf(
+                b
+                , "%s.%s.%s.%s%s%s " CALCULATED_NUMBER_FORMAT " %llu\n"
+                , prefix
+                , hostname
+                , chart_name
+                , dimension_name
+                , (host->tags)?";":""
+                , (host->tags)?host->tags:""
+                , value
+                , (unsigned long long) last_t
+        );
+
+        return 1;
+    }
+    return 0;
+}
+
+int process_graphite_response(BUFFER *b) {
+    return discard_response(b, "graphite");
+}
+
+
diff --git a/backends/graphite/graphite.h b/backends/graphite/graphite.h
new file mode 100644
index 000000000..b7b0930fa
--- /dev/null
+++ b/backends/graphite/graphite.h
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+
+#ifndef NETDATA_BACKEND_GRAPHITE_H
+#define NETDATA_BACKEND_GRAPHITE_H
+
+#include "backends/backends.h"
+
+extern int format_dimension_collected_graphite_plaintext(
+          BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+);
+
+extern int format_dimension_stored_graphite_plaintext(
+          BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+);
+
+extern int process_graphite_response(BUFFER *b);
+
+#endif //NETDATA_BACKEND_GRAPHITE_H
diff --git a/backends/json/Makefile.am b/backends/json/Makefile.am
new file mode 100644
index 000000000..babdcf0df
--- /dev/null
+++ b/backends/json/Makefile.am
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
diff --git a/backends/json/Makefile.in b/backends/json/Makefile.in
new file mode 100644
index 000000000..88fd11a0c
--- /dev/null
+++ b/backends/json/Makefile.in
@@ -0,0 +1,457 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
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+  case $${target_option-} in \
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+      *) echo "am__make_running_with_option: internal error: invalid" \
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+      *=*|--*) continue;; \
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+      -*I?*) strip_trailopt 'I';; \
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+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
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+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
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+cachedir = @cachedir@
+chartsdir = @chartsdir@
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+datarootdir = @datarootdir@
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+host = @host@
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+host_vendor = @host_vendor@
+htmldir = @htmldir@
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+logdir = @logdir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
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+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+pluginsdir = @pluginsdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
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+pythondir = @pythondir@
+registrydir = @registrydir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+varlibdir = @varlibdir@
+webdir = @webdir@
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu backends/json/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu backends/json/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile
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+install: install-am
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+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
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+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
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+	-rm -f Makefile
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+
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+	-rm -f Makefile
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+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/backends/json/json.c b/backends/json/json.c
new file mode 100644
index 000000000..a53c0f143
--- /dev/null
+++ b/backends/json/json.c
@@ -0,0 +1,152 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define BACKENDS_INTERNALS
+#include "json.h"
+
+// ----------------------------------------------------------------------------
+// json backend
+
+int format_dimension_collected_json_plaintext(
+        BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+) {
+    (void)host;
+    (void)after;
+    (void)before;
+    (void)backend_options;
+
+    const char *tags_pre = "", *tags_post = "", *tags = host->tags;
+    if(!tags) tags = "";
+
+    if(*tags) {
+        if(*tags == '{' || *tags == '[' || *tags == '"') {
+            tags_pre = "\"host_tags\":";
+            tags_post = ",";
+        }
+        else {
+            tags_pre = "\"host_tags\":\"";
+            tags_post = "\",";
+        }
+    }
+
+    buffer_sprintf(b, "{"
+                      "\"prefix\":\"%s\","
+                      "\"hostname\":\"%s\","
+                      "%s%s%s"
+
+                      "\"chart_id\":\"%s\","
+                      "\"chart_name\":\"%s\","
+                      "\"chart_family\":\"%s\","
+                      "\"chart_context\": \"%s\","
+                      "\"chart_type\":\"%s\","
+                      "\"units\": \"%s\","
+
+                      "\"id\":\"%s\","
+                      "\"name\":\"%s\","
+                      "\"value\":" COLLECTED_NUMBER_FORMAT ","
+
+                      "\"timestamp\": %llu}\n",
+            prefix,
+            hostname,
+            tags_pre, tags, tags_post,
+
+            st->id,
+            st->name,
+            st->family,
+            st->context,
+            st->type,
+            st->units,
+
+            rd->id,
+            rd->name,
+            rd->last_collected_value,
+
+            (unsigned long long) rd->last_collected_time.tv_sec
+    );
+
+    return 1;
+}
+
+int format_dimension_stored_json_plaintext(
+        BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+) {
+    (void)host;
+
+    time_t first_t = after, last_t = before;
+    calculated_number value = backend_calculate_value_from_stored_data(st, rd, after, before, backend_options, &first_t, &last_t);
+
+    if(!isnan(value)) {
+        const char *tags_pre = "", *tags_post = "", *tags = host->tags;
+        if(!tags) tags = "";
+
+        if(*tags) {
+            if(*tags == '{' || *tags == '[' || *tags == '"') {
+                tags_pre = "\"host_tags\":";
+                tags_post = ",";
+            }
+            else {
+                tags_pre = "\"host_tags\":\"";
+                tags_post = "\",";
+            }
+        }
+
+        buffer_sprintf(b, "{"
+                          "\"prefix\":\"%s\","
+                          "\"hostname\":\"%s\","
+                          "%s%s%s"
+
+                          "\"chart_id\":\"%s\","
+                          "\"chart_name\":\"%s\","
+                          "\"chart_family\":\"%s\","
+                          "\"chart_context\": \"%s\","
+                          "\"chart_type\":\"%s\","
+                          "\"units\": \"%s\","
+
+                          "\"id\":\"%s\","
+                          "\"name\":\"%s\","
+                          "\"value\":" CALCULATED_NUMBER_FORMAT ","
+
+                          "\"timestamp\": %llu}\n",
+                prefix,
+                hostname,
+                tags_pre, tags, tags_post,
+
+                st->id,
+                st->name,
+                st->family,
+                st->context,
+                st->type,
+                st->units,
+
+                rd->id,
+                rd->name,
+                value,
+
+                (unsigned long long) last_t
+        );
+
+        return 1;
+    }
+    return 0;
+}
+
+int process_json_response(BUFFER *b) {
+    return discard_response(b, "json");
+}
+
+
diff --git a/backends/json/json.h b/backends/json/json.h
new file mode 100644
index 000000000..11015652e
--- /dev/null
+++ b/backends/json/json.h
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_BACKEND_JSON_H
+#define NETDATA_BACKEND_JSON_H
+
+#include "backends/backends.h"
+
+extern int format_dimension_collected_json_plaintext(
+          BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+);
+
+extern int format_dimension_stored_json_plaintext(
+          BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+);
+
+extern int process_json_response(BUFFER *b);
+
+#endif //NETDATA_BACKEND_JSON_H
diff --git a/contrib/nc-backend.sh b/backends/nc-backend.sh
index aac5c20bb..7280f86a0 100755
--- a/contrib/nc-backend.sh
+++ b/backends/nc-backend.sh
@@ -1,5 +1,10 @@
 #!/usr/bin/env bash
 
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# This is a simple backend database proxy, written in BASH, using the nc command.
+# Run the script without any parameters for help.
+
 MODE="${1}"
 MY_PORT="${2}"
 BACKEND_HOST="${3}"
@@ -25,7 +30,7 @@ mync() {
 listen_save_replay_forever() {
 	local file="${1}" port="${2}" real_backend_host="${3}" real_backend_port="${4}" ret delay=1 started ended
 
-	while [ 1 ]
+	while true
 	do
 		log "Starting nc to listen on port ${port} and save metrics to ${file}"
 		
@@ -35,7 +40,7 @@ listen_save_replay_forever() {
 		
 		if [ -s "${file}" ]
 			then
-			if [ ! -z "${real_backend_host}" -a ! -z "${real_backend_port}" ]
+			if [ ! -z "${real_backend_host}" ] && [ ! -z "${real_backend_port}" ]
 				then
 				log "Attempting to send the metrics to the real backend at ${real_backend_host}:${real_backend_port}"
 				
@@ -77,6 +82,7 @@ if [ "${MODE}" = "start" ]
 	# only one can use the same file/port at a time
 	{
 		flock -n 9
+		# shellcheck disable=SC2181
 		if [ $? -ne 0 ]
 			then
 			log "Cannot get exclusive lock on file ${FILE}.lock - Am I running multiple times?"
@@ -86,7 +92,7 @@ if [ "${MODE}" = "start" ]
 		# save our PID to the lock file
 		echo "$$" >"${FILE}.lock"
 
-		listen_save_replay_forever "${FILE}" ${MY_PORT} ${BACKEND_HOST} ${BACKEND_PORT}
+		listen_save_replay_forever "${FILE}" "${MY_PORT}" "${BACKEND_HOST}" "${BACKEND_PORT}"
 		ret=$?
 
 		log "listener exited."
@@ -103,11 +109,12 @@ elif [ "${MODE}" = "stop" ]
 
 	{
 		flock -n 9
+		# shellcheck disable=SC2181
 		if [ $? -ne 0 ]
 			then
-			pid=$(<${FILE}.lock)
+			pid=$(<"${FILE}".lock)
 			log "Killing process ${pid}..."
-			kill -TERM -${pid}
+			kill -TERM "-${pid}"
 			exit 0
 		fi
 
diff --git a/backends/opentsdb/Makefile.am b/backends/opentsdb/Makefile.am
new file mode 100644
index 000000000..babdcf0df
--- /dev/null
+++ b/backends/opentsdb/Makefile.am
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
diff --git a/backends/opentsdb/Makefile.in b/backends/opentsdb/Makefile.in
new file mode 100644
index 000000000..6c29cce40
--- /dev/null
+++ b/backends/opentsdb/Makefile.in
@@ -0,0 +1,457 @@
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+
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+
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+# with or without modifications, as long as this notice is preserved.
+
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+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
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+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu backends/opentsdb/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu backends/opentsdb/Makefile
+.PRECIOUS: Makefile
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+	@case '$?' in \
+	  *config.status*) \
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diff --git a/backends/opentsdb/opentsdb.c b/backends/opentsdb/opentsdb.c
new file mode 100644
index 000000000..6e3a31ab6
--- /dev/null
+++ b/backends/opentsdb/opentsdb.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define BACKENDS_INTERNALS
+#include "opentsdb.h"
+
+// ----------------------------------------------------------------------------
+// opentsdb backend
+
+int format_dimension_collected_opentsdb_telnet(
+        BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+) {
+    (void)host;
+    (void)after;
+    (void)before;
+
+    char chart_name[RRD_ID_LENGTH_MAX + 1];
+    char dimension_name[RRD_ID_LENGTH_MAX + 1];
+    backend_name_copy(chart_name, (backend_options & BACKEND_OPTION_SEND_NAMES && st->name)?st->name:st->id, RRD_ID_LENGTH_MAX);
+    backend_name_copy(dimension_name, (backend_options & BACKEND_OPTION_SEND_NAMES && rd->name)?rd->name:rd->id, RRD_ID_LENGTH_MAX);
+
+    buffer_sprintf(
+            b
+            , "put %s.%s.%s %llu " COLLECTED_NUMBER_FORMAT " host=%s%s%s\n"
+            , prefix
+            , chart_name
+            , dimension_name
+            , (unsigned long long)rd->last_collected_time.tv_sec
+            , rd->last_collected_value
+            , hostname
+            , (host->tags)?" ":""
+            , (host->tags)?host->tags:""
+    );
+
+    return 1;
+}
+
+int format_dimension_stored_opentsdb_telnet(
+        BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+) {
+    (void)host;
+
+    time_t first_t = after, last_t = before;
+    calculated_number value = backend_calculate_value_from_stored_data(st, rd, after, before, backend_options, &first_t, &last_t);
+
+    char chart_name[RRD_ID_LENGTH_MAX + 1];
+    char dimension_name[RRD_ID_LENGTH_MAX + 1];
+    backend_name_copy(chart_name, (backend_options & BACKEND_OPTION_SEND_NAMES && st->name)?st->name:st->id, RRD_ID_LENGTH_MAX);
+    backend_name_copy(dimension_name, (backend_options & BACKEND_OPTION_SEND_NAMES && rd->name)?rd->name:rd->id, RRD_ID_LENGTH_MAX);
+
+    if(!isnan(value)) {
+
+        buffer_sprintf(
+                b
+                , "put %s.%s.%s %llu " CALCULATED_NUMBER_FORMAT " host=%s%s%s\n"
+                , prefix
+                , chart_name
+                , dimension_name
+                , (unsigned long long) last_t
+                , value
+                , hostname
+                , (host->tags)?" ":""
+                , (host->tags)?host->tags:""
+        );
+
+        return 1;
+    }
+    return 0;
+}
+
+int process_opentsdb_response(BUFFER *b) {
+    return discard_response(b, "opentsdb");
+}
+
+
diff --git a/backends/opentsdb/opentsdb.h b/backends/opentsdb/opentsdb.h
new file mode 100644
index 000000000..fc83b39ca
--- /dev/null
+++ b/backends/opentsdb/opentsdb.h
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_BACKEND_OPENTSDB_H
+#define NETDATA_BACKEND_OPENTSDB_H
+
+#include "backends/backends.h"
+
+extern int format_dimension_collected_opentsdb_telnet(
+          BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+);
+
+extern int format_dimension_stored_opentsdb_telnet(
+          BUFFER *b                 // the buffer to write data to
+        , const char *prefix        // the prefix to use
+        , RRDHOST *host             // the host this chart comes from
+        , const char *hostname      // the hostname (to override host->hostname)
+        , RRDSET *st                // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap
+);
+
+extern int process_opentsdb_response(BUFFER *b);
+
+
+#endif //NETDATA_BACKEND_OPENTSDB_H
diff --git a/backends/prometheus/Makefile.am b/backends/prometheus/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/backends/prometheus/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/backends/prometheus/Makefile.in b/backends/prometheus/Makefile.in
new file mode 100644
index 000000000..76813e758
--- /dev/null
+++ b/backends/prometheus/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
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+
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+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+  test $$has_opt = yes
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+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu backends/prometheus/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu backends/prometheus/Makefile
+.PRECIOUS: Makefile
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+	@case '$?' in \
+	  *config.status*) \
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+	  *) \
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+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+	fi
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+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
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+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
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+.NOEXPORT:
diff --git a/backends/prometheus/README.md b/backends/prometheus/README.md
new file mode 100644
index 000000000..826cf051b
--- /dev/null
+++ b/backends/prometheus/README.md
@@ -0,0 +1,376 @@
+> IMPORTANT: the format netdata sends metrics to prometheus has changed since netdata v1.7. The new prometheus backend for netdata supports a lot more features and is aligned to the development of the rest of the netdata backends.
+
+# Using netdata with Prometheus
+
+Prometheus is a distributed monitoring system which offers a very simple setup along with a robust data model. Recently netdata added support for Prometheus. I'm going to quickly show you how to install both netdata and prometheus on the same server. We can then use grafana pointed at Prometheus to obtain long term metrics netdata offers. I'm assuming we are starting at a fresh ubuntu shell (whether you'd like to follow along in a VM or a cloud instance is up to you).
+
+## Installing netdata and prometheus
+
+### Installing netdata
+There are number of ways to install netdata according to [Installation](https://github.com/netdata/netdata/wiki/Installation)  
+The suggested way of installing the latest netdata and keep it upgrade automatically. Using one line installation:
+
+```
+bash <(curl -Ss https://my-netdata.io/kickstart.sh)
+```
+At this point we should have netdata listening on port 19999. Attempt to take your browser here:
+
+```
+http://your.netdata.ip:19999
+```
+
+*(replace `your.netdata.ip` with the IP or hostname of the server running netdata)*
+
+### Installing Prometheus
+In order to install prometheus we are going to introduce our own systemd startup script along with an example of prometheus.yaml configuration. Prometheus needs to be pointed to your server at a specific target url for it to scrape netdata's api. Prometheus is always a pull model meaning netdata is the passive client within this architecture. Prometheus always initiates the connection with netdata.
+
+##### Download Prometheus
+
+```sh
+wget -O /tmp/prometheus-2.3.2.linux-amd64.tar.gz https://github.com/prometheus/prometheus/releases/download/v2.3.2/prometheus-2.3.2.linux-amd64.tar.gz
+```
+
+##### Create prometheus system user
+
+```sh
+sudo useradd -r prometheus
+```
+
+#### Create prometheus directory
+
+```sh
+sudo mkdir /opt/prometheus
+sudo chown prometheus:prometheus /opt/prometheus
+```
+
+#### Untar prometheus directory
+
+```sh
+sudo tar -xvf /tmp/prometheus-2.3.2.linux-amd64.tar.gz -C /opt/prometheus --strip=1
+```
+
+#### Install prometheus.yml
+
+We will use the following `prometheus.yml` file. Save it at `/opt/prometheus/prometheus.yml`.
+
+Make sure to replace `your.netdata.ip` with the IP or hostname of the host running netdata. 
+
+```yaml
+# my global config
+global:
+  scrape_interval:     5s # Set the scrape interval to every 5 seconds. Default is every 1 minute.
+  evaluation_interval: 5s # Evaluate rules every 5 seconds. The default is every 1 minute.
+  # scrape_timeout is set to the global default (10s).
+
+  # Attach these labels to any time series or alerts when communicating with
+  # external systems (federation, remote storage, Alertmanager).
+  external_labels:
+      monitor: 'codelab-monitor'
+
+# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
+rule_files:
+  # - "first.rules"
+  # - "second.rules"
+
+# A scrape configuration containing exactly one endpoint to scrape:
+# Here it's Prometheus itself.
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: 'prometheus'
+
+    # metrics_path defaults to '/metrics'
+    # scheme defaults to 'http'.
+
+    static_configs:
+      - targets: ['0.0.0.0:9090']
+
+  - job_name: 'netdata-scrape'
+
+    metrics_path: '/api/v1/allmetrics'
+    params:
+      # format: prometheus | prometheus_all_hosts
+      # You can use `prometheus_all_hosts` if you want Prometheus to set the `instance` to your hostname instead of IP 
+      format: [prometheus]
+      #
+      # sources: as-collected | raw | average | sum | volume
+      # default is: average
+      #source: [as-collected]
+      #
+      # server name for this prometheus - the default is the client IP
+      # for netdata to uniquely identify it
+      #server: ['prometheus1']
+    honor_labels: true
+
+    static_configs:
+      - targets: ['{your.netdata.ip}:19999']
+```
+#### Install nodes.yml
+
+The following is completely optional, it will enable Prometheus to generate alerts from some NetData sources. Tweak the values to your own needs. We will use the following `nodes.yml` file below. Save it at `/opt/prometheus/nodes.yml`, and add a *- "nodes.yml"* entry under the *rule_files:* section in the example prometheus.yml file above.
+```
+groups:
+- name: nodes
+
+  rules:
+  - alert: node_high_cpu_usage_70
+    expr: avg(rate(netdata_cpu_cpu_percentage_average{dimension="idle"}[1m])) by (job) > 70
+    for: 1m
+    annotations:
+      description: '{{ $labels.job }} on ''{{ $labels.job }}'' CPU usage is at {{ humanize $value }}%.'
+      summary: CPU alert for container node '{{ $labels.job }}'
+
+  - alert: node_high_memory_usage_70
+    expr: 100 / sum(netdata_system_ram_MB_average) by (job) 
+      * sum(netdata_system_ram_MB_average{dimension=~"free|cached"}) by (job) < 30
+    for: 1m
+    annotations:
+      description: '{{ $labels.job }} memory usage is {{ humanize $value}}%.'
+      summary: Memory alert for container node '{{ $labels.job }}'
+
+  - alert: node_low_root_filesystem_space_20
+    expr: 100 / sum(netdata_disk_space_GB_average{family="/"}) by (job)
+      * sum(netdata_disk_space_GB_average{family="/",dimension=~"avail|cached"}) by (job) < 20
+    for: 1m
+    annotations:
+      description: '{{ $labels.job }} root filesystem space is {{ humanize $value}}%.'
+      summary: Root filesystem alert for container node '{{ $labels.job }}'
+
+  - alert: node_root_filesystem_fill_rate_6h
+    expr: predict_linear(netdata_disk_space_GB_average{family="/",dimension=~"avail|cached"}[1h], 6 * 3600) < 0
+    for: 1h
+    labels:
+      severity: critical
+    annotations:
+      description: Container node {{ $labels.job }} root filesystem is going to fill up in 6h.
+      summary: Disk fill alert for Swarm node '{{ $labels.job }}'
+```
+
+#### Install prometheus.service
+
+Save this service file as `/etc/systemd/system/prometheus.service`:
+
+```
+[Unit]
+Description=Prometheus Server
+AssertPathExists=/opt/prometheus
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/prometheus
+User=prometheus
+Group=prometheus
+ExecStart=/opt/prometheus/prometheus --config.file=/opt/prometheus/prometheus.yml --log.level=info
+ExecReload=/bin/kill -SIGHUP $MAINPID
+ExecStop=/bin/kill -SIGINT $MAINPID
+
+[Install]
+WantedBy=multi-user.target
+```
+
+##### Start Prometheus
+
+```
+sudo systemctl start prometheus
+sudo systemctl enable prometheus
+```
+
+Prometheus should now start and listen on port 9090. Attempt to head there with your browser. 
+
+If everything is working correctly when you fetch `http://your.prometheus.ip:9090` you will see a 'Status' tab. Click this and click on 'targets' We should see the netdata host as a scraped target. 
+
+---
+
+## netdata support for prometheus
+
+> IMPORTANT: the format netdata sends metrics to prometheus has changed since netdata v1.6. The new format allows easier queries for metrics and supports both `as collected` and normalized metrics.
+
+Before explaining the changes, we have to understand the key differences between netdata and prometheus.
+
+### understanding netdata metrics
+
+##### charts
+
+Each chart in netdata has several properties (common to all its metrics):
+
+- `chart_id` - uniquely identifies a chart.
+
+- `chart_name` - a more human friendly name for `chart_id`, also unique.
+
+- `context` - this is the template of the chart. All disk I/O charts have the same context, all mysql requests charts have the same context, etc. This is used for alarm templates to match all the charts they should be attached to.
+
+- `family` groups a set of charts together. It is used as the submenu of the dashboard.
+
+- `units` is the units for all the metrics attached to the chart.
+
+##### dimensions
+
+Then each netdata chart contains metrics called `dimensions`. All the dimensions of a chart have the same units of measurement, and are contextually in the same category (ie. the metrics for disk bandwidth are `read` and `write` and they are both in the same chart).
+
+### netdata data source
+
+netdata can send metrics to prometheus from 3 data sources:
+
+- `as collected` or `raw` - this data source sends the metrics to prometheus as they are collected. No conversion is done by netdata. The latest value for each metric is just given to prometheus. This is the most preferred method by prometheus, but it is also the harder to work with. To work with this data source, you will need to understand how to get meaningful values out of them.
+
+   The format of the metrics is: `CONTEXT{chart="CHART",family="FAMILY",dimension="DIMENSION"}`.
+
+   If the metric is a counter (`incremental` in netdata lingo), `_total` is appended the context.
+
+   Unlike prometheus, netdata allows each dimension of a chart to have a different algorithm and conversion constants (`multiplier` and `divisor`). In this case, that the dimensions of a charts are heterogeneous, netdata will use this format: `CONTEXT_DIMENSION{chart="CHART",family="FAMILY"}`
+
+- `average` - this data source uses the netdata database to send the metrics to prometheus as they are presented on the netdata dashboard. So, all the metrics are sent as gauges, at the units they are presented in the netdata dashboard charts. This is the easiest to work with.
+
+   The format of the metrics is: `CONTEXT_UNITS_average{chart="CHART",family="FAMILY",dimension="DIMENSION"}`.
+
+   When this source is used, netdata keeps track of the last access time for each prometheus server fetching the metrics. This last access time is used at the subsequent queries of the same prometheus server to identify the time-frame the `average` will be calculated. So, no matter how frequently prometheus scrapes netdata, it will get all the database data. To identify each prometheus server, netdata uses by default the IP of the client fetching the metrics. If there are multiple prometheus servers fetching data from the same netdata, using the same IP, each prometheus server can append `server=NAME` to the URL. Netdata will use this `NAME` to uniquely identify the prometheus server.
+
+- `sum` or `volume`, is like `average` but instead of averaging the values, it sums them.
+
+   The format of the metrics is: `CONTEXT_UNITS_sum{chart="CHART",family="FAMILY",dimension="DIMENSION"}`.
+   All the other operations are the same with `average`. 
+
+Keep in mind that early versions of netdata were sending the metrics as: `CHART_DIMENSION{}`.
+
+
+### Querying Metrics
+
+Fetch with your web browser this URL:
+
+`http://your.netdata.ip:19999/api/v1/allmetrics?format=prometheus&help=yes`
+
+*(replace `your.netdata.ip` with the ip or hostname of your netdata server)*
+
+netdata will respond with all the metrics it sends to prometheus.
+
+If you search that page for `"system.cpu"` you will find all the metrics netdata is exporting to prometheus for this chart.  `system.cpu` is the chart name on the netdata dashboard (on the netdata dashboard all charts have a text heading such as : `Total CPU utilization (system.cpu)`. What we are interested here in the chart name: `system.cpu`).
+
+Searching for `"system.cpu"` reveals:
+
+```sh
+# COMMENT homogeneus chart "system.cpu", context "system.cpu", family "cpu", units "percentage"
+# COMMENT netdata_system_cpu_percentage_average: dimension "guest_nice", value is percentage, gauge, dt 1500066653 to 1500066662 inclusive
+netdata_system_cpu_percentage_average{chart="system.cpu",family="cpu",dimension="guest_nice"} 0.0000000 1500066662000
+# COMMENT netdata_system_cpu_percentage_average: dimension "guest", value is percentage, gauge, dt 1500066653 to 1500066662 inclusive
+netdata_system_cpu_percentage_average{chart="system.cpu",family="cpu",dimension="guest"} 1.7837326 1500066662000
+# COMMENT netdata_system_cpu_percentage_average: dimension "steal", value is percentage, gauge, dt 1500066653 to 1500066662 inclusive
+netdata_system_cpu_percentage_average{chart="system.cpu",family="cpu",dimension="steal"} 0.0000000 1500066662000
+# COMMENT netdata_system_cpu_percentage_average: dimension "softirq", value is percentage, gauge, dt 1500066653 to 1500066662 inclusive
+netdata_system_cpu_percentage_average{chart="system.cpu",family="cpu",dimension="softirq"} 0.5275442 1500066662000
+# COMMENT netdata_system_cpu_percentage_average: dimension "irq", value is percentage, gauge, dt 1500066653 to 1500066662 inclusive
+netdata_system_cpu_percentage_average{chart="system.cpu",family="cpu",dimension="irq"} 0.2260836 1500066662000
+# COMMENT netdata_system_cpu_percentage_average: dimension "user", value is percentage, gauge, dt 1500066653 to 1500066662 inclusive
+netdata_system_cpu_percentage_average{chart="system.cpu",family="cpu",dimension="user"} 2.3362762 1500066662000
+# COMMENT netdata_system_cpu_percentage_average: dimension "system", value is percentage, gauge, dt 1500066653 to 1500066662 inclusive
+netdata_system_cpu_percentage_average{chart="system.cpu",family="cpu",dimension="system"} 1.7961062 1500066662000
+# COMMENT netdata_system_cpu_percentage_average: dimension "nice", value is percentage, gauge, dt 1500066653 to 1500066662 inclusive
+netdata_system_cpu_percentage_average{chart="system.cpu",family="cpu",dimension="nice"} 0.0000000 1500066662000
+# COMMENT netdata_system_cpu_percentage_average: dimension "iowait", value is percentage, gauge, dt 1500066653 to 1500066662 inclusive
+netdata_system_cpu_percentage_average{chart="system.cpu",family="cpu",dimension="iowait"} 0.9671802 1500066662000
+# COMMENT netdata_system_cpu_percentage_average: dimension "idle", value is percentage, gauge, dt 1500066653 to 1500066662 inclusive
+netdata_system_cpu_percentage_average{chart="system.cpu",family="cpu",dimension="idle"} 92.3630770 1500066662000
+```
+*(netdata response for `system.cpu` with source=`average`)*
+
+In `average` or `sum` data sources, all values are normalized and are reported to prometheus as gauges. Now, use the 'expression' text form in prometheus. Begin to type the metrics we are looking for: `netdata_system_cpu`. You should see that the text form begins to auto-fill as prometheus knows about this metric.
+
+If the data source was `as collected`, the response would be:
+
+```sh
+# COMMENT homogeneus chart "system.cpu", context "system.cpu", family "cpu", units "percentage"
+# COMMENT netdata_system_cpu_total: chart "system.cpu", context "system.cpu", family "cpu", dimension "guest_nice", value * 1 / 1 delta gives percentage (counter)
+netdata_system_cpu_total{chart="system.cpu",family="cpu",dimension="guest_nice"} 0 1500066716438
+# COMMENT netdata_system_cpu_total: chart "system.cpu", context "system.cpu", family "cpu", dimension "guest", value * 1 / 1 delta gives percentage (counter)
+netdata_system_cpu_total{chart="system.cpu",family="cpu",dimension="guest"} 63945 1500066716438
+# COMMENT netdata_system_cpu_total: chart "system.cpu", context "system.cpu", family "cpu", dimension "steal", value * 1 / 1 delta gives percentage (counter)
+netdata_system_cpu_total{chart="system.cpu",family="cpu",dimension="steal"} 0 1500066716438
+# COMMENT netdata_system_cpu_total: chart "system.cpu", context "system.cpu", family "cpu", dimension "softirq", value * 1 / 1 delta gives percentage (counter)
+netdata_system_cpu_total{chart="system.cpu",family="cpu",dimension="softirq"} 8295 1500066716438
+# COMMENT netdata_system_cpu_total: chart "system.cpu", context "system.cpu", family "cpu", dimension "irq", value * 1 / 1 delta gives percentage (counter)
+netdata_system_cpu_total{chart="system.cpu",family="cpu",dimension="irq"} 4079 1500066716438
+# COMMENT netdata_system_cpu_total: chart "system.cpu", context "system.cpu", family "cpu", dimension "user", value * 1 / 1 delta gives percentage (counter)
+netdata_system_cpu_total{chart="system.cpu",family="cpu",dimension="user"} 116488 1500066716438
+# COMMENT netdata_system_cpu_total: chart "system.cpu", context "system.cpu", family "cpu", dimension "system", value * 1 / 1 delta gives percentage (counter)
+netdata_system_cpu_total{chart="system.cpu",family="cpu",dimension="system"} 35084 1500066716438
+# COMMENT netdata_system_cpu_total: chart "system.cpu", context "system.cpu", family "cpu", dimension "nice", value * 1 / 1 delta gives percentage (counter)
+netdata_system_cpu_total{chart="system.cpu",family="cpu",dimension="nice"} 505 1500066716438
+# COMMENT netdata_system_cpu_total: chart "system.cpu", context "system.cpu", family "cpu", dimension "iowait", value * 1 / 1 delta gives percentage (counter)
+netdata_system_cpu_total{chart="system.cpu",family="cpu",dimension="iowait"} 23314 1500066716438
+# COMMENT netdata_system_cpu_total: chart "system.cpu", context "system.cpu", family "cpu", dimension "idle", value * 1 / 1 delta gives percentage (counter)
+netdata_system_cpu_total{chart="system.cpu",family="cpu",dimension="idle"} 918470 1500066716438
+```
+*(netdata response for `system.cpu` with source=`as-collected`)*
+
+For more information check prometheus documentation.
+
+### Streaming data from upstream hosts
+
+The `format=prometheus` parameter only exports the host's netdata metrics.  If you are using the master/slave functionality of netdata this ignores any upstream hosts - so you should consider using the below in your **prometheus.yml**:
+
+```
+    metrics_path: '/api/v1/allmetrics'
+    params:
+      format: [prometheus_all_hosts]
+    honor_labels: true
+```
+
+This will report all upstream host data, and `honor_labels` will make Prometheus take note of the instance names provided.
+
+### timestamps
+
+To pass the metrics through prometheus pushgateway, netdata supports the option `&timestamps=no` to send the metrics without timestamps.
+
+## netdata host variables
+
+netdata collects various system configuration metrics, like the max number of TCP sockets supported, the max number of files allowed system-wide, various IPC sizes, etc. These metrics are not exposed to prometheus by default.
+
+To expose them, append `variables=yes` to the netdata URL.
+
+### TYPE and HELP
+
+To save bandwidth, and because prometheus does not use them anyway, `# TYPE` and `# HELP` lines are suppressed. If wanted they can be re-enabled via `types=yes` and `help=yes`, e.g. `/api/v1/allmetrics?format=prometheus&types=yes&help=yes`
+
+### Names and IDs
+
+netdata supports names and IDs for charts and dimensions. Usually IDs are unique identifiers as read by the system and names are human friendly labels (also unique).
+
+Most charts and metrics have the same ID and name, but in several cases they are different: disks with device-mapper, interrupts, QoS classes, statsd synthetic charts, etc.
+
+The default is controlled in `netdata.conf`:
+
+```
+[backend]
+	send names instead of ids = yes | no
+```
+
+You can overwrite it from prometheus, by appending to the URL:
+
+* `&names=no` to get IDs (the old behaviour)
+* `&names=yes` to get names
+
+### Filtering metrics sent to prometheus
+
+netdata can filter the metrics it sends to prometheus with this setting:
+
+```
+[backend]
+	send charts matching = *
+```
+
+This settings accepts a space separated list of patterns to match the **charts** to be sent to prometheus. Each pattern can use ` * ` as wildcard, any number of times (e.g `*a*b*c*` is valid). Patterns starting with ` ! ` give a negative match (e.g `!*.bad users.* groups.*` will send all the users and groups except `bad` user and `bad` group). The order is important: the first match (positive or negative) left to right, is used.
+
+### Changing the prefix of netdata metrics
+
+netdata sends all metrics prefixed with `netdata_`. You can change this in `netdata.conf`, like this:
+
+```
+[backend]
+	prefix = netdata
+```
+
+It can also be changed from the URL, by appending `&prefix=netdata`.
+
+### accuracy of `average` and `sum` data sources
+
+When the data source is set to `average` or `sum`, netdata remembers the last access of each client accessing prometheus metrics and uses this last access time to respond with the `average` or `sum` of all the entries in the database since that. This means that prometheus servers are not losing data when they access netdata with data source = `average` or `sum`.
+
+To uniquely identify each prometheus server, netdata uses the IP of the client accessing the metrics. If however the IP is not good enough for identifying a single prometheus server (e.g. when prometheus servers are accessing netdata through a web proxy, or when multiple prometheus servers are NATed to a single IP), each prometheus may append `&server=NAME` to the URL. This `NAME` is used by netdata to uniquely identify each prometheus server and keep track of its last access time.
diff --git a/src/backend_prometheus.c b/backends/prometheus/backend_prometheus.c
index bfcda9297..223b3f9f0 100644
--- a/src/backend_prometheus.c
+++ b/backends/prometheus/backend_prometheus.c
@@ -1,4 +1,7 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define BACKENDS_INTERNALS
+#include "backend_prometheus.h"
 
 // ----------------------------------------------------------------------------
 // PROMETHEUS
@@ -109,8 +112,77 @@ static inline char *prometheus_units_copy(char *d, const char *s, size_t usable)
 
 #define PROMETHEUS_ELEMENT_MAX 256
 #define PROMETHEUS_LABELS_MAX 1024
+#define PROMETHEUS_VARIABLE_MAX 256
+
+struct host_variables_callback_options {
+    RRDHOST *host;
+    BUFFER *wb;
+    BACKEND_OPTIONS backend_options;
+    PROMETHEUS_OUTPUT_OPTIONS output_options;
+    const char *prefix;
+    const char *labels;
+    time_t now;
+    int host_header_printed;
+    char name[PROMETHEUS_VARIABLE_MAX+1];
+};
+
+static int print_host_variables(RRDVAR *rv, void *data) {
+    struct host_variables_callback_options *opts = data;
+
+    if(rv->options & (RRDVAR_OPTION_CUSTOM_HOST_VAR|RRDVAR_OPTION_CUSTOM_CHART_VAR)) {
+        if(!opts->host_header_printed) {
+            opts->host_header_printed = 1;
+
+            if(opts->output_options & PROMETHEUS_OUTPUT_HELP) {
+                buffer_sprintf(opts->wb, "\n# COMMENT global host and chart variables\n");
+            }
+        }
+
+        calculated_number value = rrdvar2number(rv);
+        if(isnan(value) || isinf(value)) {
+            if(opts->output_options & PROMETHEUS_OUTPUT_HELP)
+                buffer_sprintf(opts->wb, "# COMMENT variable \"%s\" is %s. Skipped.\n", rv->name, (isnan(value))?"NAN":"INF");
+
+            return 0;
+        }
+
+        char *label_pre = "";
+        char *label_post = "";
+        if(opts->labels && *opts->labels) {
+            label_pre = "{";
+            label_post = "}";
+        }
 
-static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER *wb, const char *prefix, uint32_t options, time_t after, time_t before, int allhosts, int help, int types, int names, int timestamps) {
+        prometheus_name_copy(opts->name, rv->name, sizeof(opts->name));
+
+        if(opts->output_options & PROMETHEUS_OUTPUT_TIMESTAMPS)
+            buffer_sprintf(opts->wb
+                           , "%s_%s%s%s%s " CALCULATED_NUMBER_FORMAT " %llu\n"
+                           , opts->prefix
+                           , opts->name
+                           , label_pre
+                           , opts->labels
+                           , label_post
+                           , value
+                           , ((rv->last_updated) ? rv->last_updated : opts->now) * 1000ULL
+            );
+        else
+            buffer_sprintf(opts->wb, "%s_%s%s%s%s " CALCULATED_NUMBER_FORMAT "\n"
+                           , opts->prefix
+                           , opts->name
+                           , label_pre
+                           , opts->labels
+                           , label_post
+                           , value
+            );
+
+        return 1;
+    }
+
+    return 0;
+}
+
+static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER *wb, const char *prefix, BACKEND_OPTIONS backend_options, time_t after, time_t before, int allhosts, PROMETHEUS_OUTPUT_OPTIONS output_options) {
     rrdhost_rdlock(host);
 
     char hostname[PROMETHEUS_ELEMENT_MAX + 1];
@@ -118,13 +190,13 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
 
     char labels[PROMETHEUS_LABELS_MAX + 1] = "";
     if(allhosts) {
-        if(timestamps)
+        if(output_options & PROMETHEUS_OUTPUT_TIMESTAMPS)
             buffer_sprintf(wb, "netdata_info{instance=\"%s\",application=\"%s\",version=\"%s\"} 1 %llu\n", hostname, host->program_name, host->program_version, now_realtime_usec() / USEC_PER_MS);
         else
             buffer_sprintf(wb, "netdata_info{instance=\"%s\",application=\"%s\",version=\"%s\"} 1\n", hostname, host->program_name, host->program_version);
 
         if(host->tags && *(host->tags)) {
-            if(timestamps) {
+            if(output_options & PROMETHEUS_OUTPUT_TIMESTAMPS) {
                 buffer_sprintf(wb, "netdata_host_tags_info{instance=\"%s\",%s} 1 %llu\n", hostname, host->tags, now_realtime_usec() / USEC_PER_MS);
 
                 // deprecated, exists only for compatibility with older queries
@@ -142,13 +214,13 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
         snprintfz(labels, PROMETHEUS_LABELS_MAX, ",instance=\"%s\"", hostname);
     }
     else {
-        if(timestamps)
+        if(output_options & PROMETHEUS_OUTPUT_TIMESTAMPS)
             buffer_sprintf(wb, "netdata_info{instance=\"%s\",application=\"%s\",version=\"%s\"} 1 %llu\n", hostname, host->program_name, host->program_version, now_realtime_usec() / USEC_PER_MS);
         else
             buffer_sprintf(wb, "netdata_info{instance=\"%s\",application=\"%s\",version=\"%s\"} 1\n", hostname, host->program_name, host->program_version);
 
         if(host->tags && *(host->tags)) {
-            if(timestamps) {
+            if(output_options & PROMETHEUS_OUTPUT_TIMESTAMPS) {
                 buffer_sprintf(wb, "netdata_host_tags_info{%s} 1 %llu\n", host->tags, now_realtime_usec() / USEC_PER_MS);
 
                 // deprecated, exists only for compatibility with older queries
@@ -163,6 +235,21 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
         }
     }
 
+    // send custom variables set for the host
+    if(output_options & PROMETHEUS_OUTPUT_VARIABLES){
+        struct host_variables_callback_options opts = {
+                .host = host,
+                .wb = wb,
+                .labels = (labels[0] == ',')?&labels[1]:labels,
+                .backend_options = backend_options,
+                .output_options = output_options,
+                .prefix = prefix,
+                .now = now_realtime_sec(),
+                .host_header_printed = 0
+        };
+        foreach_host_variable_callback(host, print_host_variables, &opts);
+    }
+
     // for each chart
     RRDSET *st;
     rrdset_foreach_read(st, host) {
@@ -171,14 +258,14 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
         char family[PROMETHEUS_ELEMENT_MAX + 1];
         char units[PROMETHEUS_ELEMENT_MAX + 1] = "";
 
-        prometheus_label_copy(chart, (names && st->name)?st->name:st->id, PROMETHEUS_ELEMENT_MAX);
+        prometheus_label_copy(chart, (output_options & PROMETHEUS_OUTPUT_NAMES && st->name)?st->name:st->id, PROMETHEUS_ELEMENT_MAX);
         prometheus_label_copy(family, st->family, PROMETHEUS_ELEMENT_MAX);
         prometheus_name_copy(context, st->context, PROMETHEUS_ELEMENT_MAX);
 
-        if(likely(backends_can_send_rrdset(options, st))) {
+        if(likely(backends_can_send_rrdset(backend_options, st))) {
             rrdset_rdlock(st);
 
-            int as_collected = ((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AS_COLLECTED);
+            int as_collected = (BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED);
             int homogeneus = 1;
             if(as_collected) {
                 if(rrdset_flag_check(st, RRDSET_FLAG_HOMEGENEOUS_CHECK))
@@ -188,14 +275,14 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
                     homogeneus = 0;
             }
             else {
-                if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AVERAGE)
+                if(BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_AVERAGE)
                     prometheus_units_copy(units, st->units, PROMETHEUS_ELEMENT_MAX);
             }
 
-            if(unlikely(help))
+            if(unlikely(output_options & PROMETHEUS_OUTPUT_HELP))
                 buffer_sprintf(wb, "\n# COMMENT %s chart \"%s\", context \"%s\", family \"%s\", units \"%s\"\n"
                                , (homogeneus)?"homogeneus":"heterogeneous"
-                               , (names && st->name) ? st->name : st->id
+                               , (output_options & PROMETHEUS_OUTPUT_NAMES && st->name) ? st->name : st->id
                                , st->context
                                , st->family
                                , st->units
@@ -223,18 +310,18 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
                             // all the dimensions of the chart, has the same algorithm, multiplier and divisor
                             // we add all dimensions as labels
 
-                            prometheus_label_copy(dimension, (names && rd->name) ? rd->name : rd->id, PROMETHEUS_ELEMENT_MAX);
+                            prometheus_label_copy(dimension, (output_options & PROMETHEUS_OUTPUT_NAMES && rd->name) ? rd->name : rd->id, PROMETHEUS_ELEMENT_MAX);
 
-                            if(unlikely(help))
+                            if(unlikely(output_options & PROMETHEUS_OUTPUT_HELP))
                                 buffer_sprintf(wb
                                                , "# COMMENT %s_%s%s: chart \"%s\", context \"%s\", family \"%s\", dimension \"%s\", value * " COLLECTED_NUMBER_FORMAT " / " COLLECTED_NUMBER_FORMAT " %s %s (%s)\n"
                                                , prefix
                                                , context
                                                , suffix
-                                               , (names && st->name) ? st->name : st->id
+                                               , (output_options & PROMETHEUS_OUTPUT_NAMES && st->name) ? st->name : st->id
                                                , st->context
                                                , st->family
-                                               , (names && rd->name) ? rd->name : rd->id
+                                               , (output_options & PROMETHEUS_OUTPUT_NAMES && rd->name) ? rd->name : rd->id
                                                , rd->multiplier
                                                , rd->divisor
                                                , h
@@ -242,7 +329,7 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
                                                , t
                                 );
 
-                            if(unlikely(types))
+                            if(unlikely(output_options & PROMETHEUS_OUTPUT_TYPES))
                                 buffer_sprintf(wb, "# COMMENT TYPE %s_%s%s %s\n"
                                                , prefix
                                                , context
@@ -250,7 +337,7 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
                                                , t
                                 );
 
-                            if(timestamps)
+                            if(output_options & PROMETHEUS_OUTPUT_TIMESTAMPS)
                                 buffer_sprintf(wb
                                                , "%s_%s%s{chart=\"%s\",family=\"%s\",dimension=\"%s\"%s} " COLLECTED_NUMBER_FORMAT " %llu\n"
                                                , prefix
@@ -280,19 +367,19 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
                             // the dimensions of the chart, do not have the same algorithm, multiplier or divisor
                             // we create a metric per dimension
 
-                            prometheus_name_copy(dimension, (names && rd->name) ? rd->name : rd->id, PROMETHEUS_ELEMENT_MAX);
+                            prometheus_name_copy(dimension, (output_options & PROMETHEUS_OUTPUT_NAMES && rd->name) ? rd->name : rd->id, PROMETHEUS_ELEMENT_MAX);
 
-                            if(unlikely(help))
+                            if(unlikely(output_options & PROMETHEUS_OUTPUT_HELP))
                                 buffer_sprintf(wb
                                                , "# COMMENT %s_%s_%s%s: chart \"%s\", context \"%s\", family \"%s\", dimension \"%s\", value * " COLLECTED_NUMBER_FORMAT " / " COLLECTED_NUMBER_FORMAT " %s %s (%s)\n"
                                                , prefix
                                                , context
                                                , dimension
                                                , suffix
-                                               , (names && st->name) ? st->name : st->id
+                                               , (output_options & PROMETHEUS_OUTPUT_NAMES && st->name) ? st->name : st->id
                                                , st->context
                                                , st->family
-                                               , (names && rd->name) ? rd->name : rd->id
+                                               , (output_options & PROMETHEUS_OUTPUT_NAMES && rd->name) ? rd->name : rd->id
                                                , rd->multiplier
                                                , rd->divisor
                                                , h
@@ -300,7 +387,7 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
                                                , t
                                 );
 
-                            if(unlikely(types))
+                            if(unlikely(output_options & PROMETHEUS_OUTPUT_TYPES))
                                 buffer_sprintf(wb, "# COMMENT TYPE %s_%s_%s%s %s\n"
                                                , prefix
                                                , context
@@ -309,7 +396,7 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
                                                , t
                                 );
 
-                            if(timestamps)
+                            if(output_options & PROMETHEUS_OUTPUT_TIMESTAMPS)
                                 buffer_sprintf(wb
                                                , "%s_%s_%s%s{chart=\"%s\",family=\"%s\"%s} " COLLECTED_NUMBER_FORMAT " %llu\n"
                                                , prefix
@@ -340,30 +427,30 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
                         // we need average or sum of the data
 
                         time_t first_t = after, last_t = before;
-                        calculated_number value = backend_calculate_value_from_stored_data(st, rd, after, before, options, &first_t, &last_t);
+                        calculated_number value = backend_calculate_value_from_stored_data(st, rd, after, before, backend_options, &first_t, &last_t);
 
                         if(!isnan(value) && !isinf(value)) {
 
-                            if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AVERAGE)
+                            if(BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_AVERAGE)
                                 suffix = "_average";
-                            else if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_SUM)
+                            else if(BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_SUM)
                                 suffix = "_sum";
 
-                            prometheus_label_copy(dimension, (names && rd->name) ? rd->name : rd->id, PROMETHEUS_ELEMENT_MAX);
+                            prometheus_label_copy(dimension, (output_options & PROMETHEUS_OUTPUT_NAMES && rd->name) ? rd->name : rd->id, PROMETHEUS_ELEMENT_MAX);
 
-                            if (unlikely(help))
+                            if (unlikely(output_options & PROMETHEUS_OUTPUT_HELP))
                                 buffer_sprintf(wb, "# COMMENT %s_%s%s%s: dimension \"%s\", value is %s, gauge, dt %llu to %llu inclusive\n"
                                                , prefix
                                                , context
                                                , units
                                                , suffix
-                                               , (names && rd->name) ? rd->name : rd->id
+                                               , (output_options & PROMETHEUS_OUTPUT_NAMES && rd->name) ? rd->name : rd->id
                                                , st->units
                                                , (unsigned long long)first_t
                                                , (unsigned long long)last_t
                                 );
 
-                            if (unlikely(types))
+                            if (unlikely(output_options & PROMETHEUS_OUTPUT_TYPES))
                                 buffer_sprintf(wb, "# COMMENT TYPE %s_%s%s%s gauge\n"
                                                , prefix
                                                , context
@@ -371,7 +458,7 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
                                                , suffix
                                 );
 
-                            if(timestamps)
+                            if(output_options & PROMETHEUS_OUTPUT_TIMESTAMPS)
                                 buffer_sprintf(wb, "%s_%s%s%s{chart=\"%s\",family=\"%s\",dimension=\"%s\"%s} " CALCULATED_NUMBER_FORMAT " %llu\n"
                                                , prefix
                                                , context
@@ -408,32 +495,32 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER
     rrdhost_unlock(host);
 }
 
-static inline time_t prometheus_preparation(RRDHOST *host, BUFFER *wb, uint32_t options, const char *server, time_t now, int help) {
+static inline time_t prometheus_preparation(RRDHOST *host, BUFFER *wb, BACKEND_OPTIONS backend_options, const char *server, time_t now, PROMETHEUS_OUTPUT_OPTIONS output_options) {
     if(!server || !*server) server = "default";
 
     time_t after  = prometheus_server_last_access(server, host, now);
 
     int first_seen = 0;
     if(!after) {
-        after = now - backend_update_every;
+        after = now - global_backend_update_every;
         first_seen = 1;
     }
 
     if(after > now) {
         // oops! this should never happen
-        after = now - backend_update_every;
+        after = now - global_backend_update_every;
     }
 
-    if(help) {
+    if(output_options & PROMETHEUS_OUTPUT_HELP) {
         int show_range = 1;
         char *mode;
-        if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AS_COLLECTED) {
+        if(BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED) {
             mode = "as collected";
             show_range = 0;
         }
-        else if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AVERAGE)
+        else if(BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_AVERAGE)
             mode = "average";
-        else if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_SUM)
+        else if(BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_SUM)
             mode = "sum";
         else
             mode = "unknown";
@@ -456,24 +543,24 @@ static inline time_t prometheus_preparation(RRDHOST *host, BUFFER *wb, uint32_t
     return after;
 }
 
-void rrd_stats_api_v1_charts_allmetrics_prometheus_single_host(RRDHOST *host, BUFFER *wb, const char *server, const char *prefix, uint32_t options, int help, int types, int names, int timestamps) {
+void rrd_stats_api_v1_charts_allmetrics_prometheus_single_host(RRDHOST *host, BUFFER *wb, const char *server, const char *prefix, BACKEND_OPTIONS backend_options, PROMETHEUS_OUTPUT_OPTIONS output_options) {
     time_t before = now_realtime_sec();
 
     // we start at the point we had stopped before
-    time_t after = prometheus_preparation(host, wb, options, server, before, help);
+    time_t after = prometheus_preparation(host, wb, backend_options, server, before, output_options);
 
-    rrd_stats_api_v1_charts_allmetrics_prometheus(host, wb, prefix, options, after, before, 0, help, types, names, timestamps);
+    rrd_stats_api_v1_charts_allmetrics_prometheus(host, wb, prefix, backend_options, after, before, 0, output_options);
 }
 
-void rrd_stats_api_v1_charts_allmetrics_prometheus_all_hosts(RRDHOST *host, BUFFER *wb, const char *server, const char *prefix, uint32_t options, int help, int types, int names, int timestamps) {
+void rrd_stats_api_v1_charts_allmetrics_prometheus_all_hosts(RRDHOST *host, BUFFER *wb, const char *server, const char *prefix, BACKEND_OPTIONS backend_options, PROMETHEUS_OUTPUT_OPTIONS output_options) {
     time_t before = now_realtime_sec();
 
     // we start at the point we had stopped before
-    time_t after = prometheus_preparation(host, wb, options, server, before, help);
+    time_t after = prometheus_preparation(host, wb, backend_options, server, before, output_options);
 
     rrd_rdlock();
     rrdhost_foreach_read(host) {
-        rrd_stats_api_v1_charts_allmetrics_prometheus(host, wb, prefix, options, after, before, 1, help, types, names, timestamps);
+        rrd_stats_api_v1_charts_allmetrics_prometheus(host, wb, prefix, backend_options, after, before, 1, output_options);
     }
     rrd_unlock();
 }
diff --git a/backends/prometheus/backend_prometheus.h b/backends/prometheus/backend_prometheus.h
new file mode 100644
index 000000000..dc4ec753f
--- /dev/null
+++ b/backends/prometheus/backend_prometheus.h
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_BACKEND_PROMETHEUS_H
+#define NETDATA_BACKEND_PROMETHEUS_H 1
+
+#include "backends/backends.h"
+
+typedef enum prometheus_output_flags {
+    PROMETHEUS_OUTPUT_NONE       = 0,
+    PROMETHEUS_OUTPUT_HELP       = (1 << 0),
+    PROMETHEUS_OUTPUT_TYPES      = (1 << 1),
+    PROMETHEUS_OUTPUT_NAMES      = (1 << 2),
+    PROMETHEUS_OUTPUT_TIMESTAMPS = (1 << 3),
+    PROMETHEUS_OUTPUT_VARIABLES  = (1 << 4)
+} PROMETHEUS_OUTPUT_OPTIONS;
+
+extern void rrd_stats_api_v1_charts_allmetrics_prometheus_single_host(RRDHOST *host, BUFFER *wb, const char *server, const char *prefix, BACKEND_OPTIONS backend_options, PROMETHEUS_OUTPUT_OPTIONS output_options);
+extern void rrd_stats_api_v1_charts_allmetrics_prometheus_all_hosts(RRDHOST *host, BUFFER *wb, const char *server, const char *prefix, BACKEND_OPTIONS backend_options, PROMETHEUS_OUTPUT_OPTIONS output_options);
+
+#endif //NETDATA_BACKEND_PROMETHEUS_H
diff --git a/build/Dockerfile b/build/Dockerfile
new file mode 100644
index 000000000..8a816b825
--- /dev/null
+++ b/build/Dockerfile
@@ -0,0 +1,8 @@
+FROM gcc:8
+
+RUN apt-get update && apt-get install -y \
+    autoconf-archive \
+    autogen \
+    libmnl-dev \
+    uuid-dev \
+ && rm -rf /var/lib/apt/lists/*
diff --git a/build/build.sh b/build/build.sh
new file mode 100755
index 000000000..ee087b98f
--- /dev/null
+++ b/build/build.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+if [ -f build.sh ]; then
+    cd ../ || exit 1
+fi
+
+if [ "$IS_CONTAINER" != "" ]; then
+  autoreconf -ivf
+  ./configure --enable-maintainer-mode
+  make dist
+  rm -rf autom4te.cache
+else
+  if [[ "$(docker images -q netdata-gcc-builder:latest 2> /dev/null)" == "" ]]; then
+      docker build -t netdata-gcc-builder:latest -f build/Dockerfile .
+  fi
+  docker run --rm -it \
+    --env IS_CONTAINER=TRUE \
+    --volume "${PWD}:/project:Z" \
+    --workdir "/project" \
+    netdata:gcc \
+    ./.travis/build.sh
+fi
diff --git a/m4/ax_c___atomic.m4 b/build/m4/ax_c___atomic.m4
index dd5ee3d1c..dd5ee3d1c 100644
--- a/m4/ax_c___atomic.m4
+++ b/build/m4/ax_c___atomic.m4
diff --git a/m4/ax_c__generic.m4 b/build/m4/ax_c__generic.m4
index 0c4dd52c6..0c4dd52c6 100644
--- a/m4/ax_c__generic.m4
+++ b/build/m4/ax_c__generic.m4
diff --git a/m4/ax_c_lto.m4 b/build/m4/ax_c_lto.m4
index 7e6bc0119..7e6bc0119 100644
--- a/m4/ax_c_lto.m4
+++ b/build/m4/ax_c_lto.m4
diff --git a/m4/ax_c_mallinfo.m4 b/build/m4/ax_c_mallinfo.m4
index af8d0481e..af8d0481e 100644
--- a/m4/ax_c_mallinfo.m4
+++ b/build/m4/ax_c_mallinfo.m4
diff --git a/m4/ax_c_mallopt.m4 b/build/m4/ax_c_mallopt.m4
index 31c4fdc36..31c4fdc36 100644
--- a/m4/ax_c_mallopt.m4
+++ b/build/m4/ax_c_mallopt.m4
diff --git a/m4/ax_c_statement_expressions.m4 b/build/m4/ax_c_statement_expressions.m4
index fb259e727..fb259e727 100644
--- a/m4/ax_c_statement_expressions.m4
+++ b/build/m4/ax_c_statement_expressions.m4
diff --git a/m4/ax_check_compile_flag.m4 b/build/m4/ax_check_compile_flag.m4
index 51df0c09a..c515602f0 100644
--- a/m4/ax_check_compile_flag.m4
+++ b/build/m4/ax_check_compile_flag.m4
@@ -29,31 +29,7 @@
 #   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
 #   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
 #
-#   This program is free software: you can redistribute it and/or modify it
-#   under the terms of the GNU General Public License as published by the
-#   Free Software Foundation, either version 3 of the License, or (at your
-#   option) any later version.
-#
-#   This program is distributed in the hope that it will be useful, but
-#   WITHOUT ANY WARRANTY; without even the implied warranty of
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
-#   Public License for more details.
-#
-#   You should have received a copy of the GNU General Public License along
-#   with this program. If not, see <http://www.gnu.org/licenses/>.
-#
-#   As a special exception, the respective Autoconf Macro's copyright owner
-#   gives unlimited permission to copy, distribute and modify the configure
-#   scripts that are the output of Autoconf when processing the Macro. You
-#   need not follow the terms of the GNU General Public License when using
-#   or distributing such scripts, even though portions of the text of the
-#   Macro appear in them. The GNU General Public License (GPL) does govern
-#   all other use of the material that constitutes the Autoconf Macro.
-#
-#   This special exception to the GPL applies to versions of the Autoconf
-#   Macro released by the Autoconf Archive. When you make and distribute a
-#   modified version of the Autoconf Macro, you may extend this special
-#   exception to the GPL to apply to your modified version as well.
+#   SPDX-License-Identifier: GPL-3.0
 
 #serial 3
 
diff --git a/m4/ax_check_enable_debug.m4 b/build/m4/ax_check_enable_debug.m4
index f99d75feb..db5bab2f4 100644
--- a/m4/ax_check_enable_debug.m4
+++ b/build/m4/ax_check_enable_debug.m4
@@ -38,9 +38,7 @@
 #   Copyright (c) 2011 Rhys Ulerich <rhys.ulerich@gmail.com>
 #   Copyright (c) 2014, 2015 Philip Withnall <philip@tecnocode.co.uk>
 #
-#   Copying and distribution of this file, with or without modification, are
-#   permitted in any medium without royalty provided the copyright notice
-#   and this notice are preserved.
+#   SPDX-License-Identifier: FSFAP
 
 #serial 5
 
diff --git a/m4/ax_gcc_func_attribute.m4 b/build/m4/ax_gcc_func_attribute.m4
index a6d9f6c5f..6f1e1b051 100644
--- a/m4/ax_gcc_func_attribute.m4
+++ b/build/m4/ax_gcc_func_attribute.m4
@@ -69,10 +69,7 @@
 #
 #   Copyright (c) 2013 Gabriele Svelto <gabriele.svelto@gmail.com>
 #
-#   Copying and distribution of this file, with or without modification, are
-#   permitted in any medium without royalty provided the copyright notice
-#   and this notice are preserved.  This file is offered as-is, without any
-#   warranty.
+#   SPDX-License-Identifier: FSFAP
 
 #serial 4
 
diff --git a/m4/ax_pthread.m4 b/build/m4/ax_pthread.m4
index d383ad5c6..ba9ac28a5 100644
--- a/m4/ax_pthread.m4
+++ b/build/m4/ax_pthread.m4
@@ -56,31 +56,7 @@
 #   Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
 #   Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG>
 #
-#   This program is free software: you can redistribute it and/or modify it
-#   under the terms of the GNU General Public License as published by the
-#   Free Software Foundation, either version 3 of the License, or (at your
-#   option) any later version.
-#
-#   This program is distributed in the hope that it will be useful, but
-#   WITHOUT ANY WARRANTY; without even the implied warranty of
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
-#   Public License for more details.
-#
-#   You should have received a copy of the GNU General Public License along
-#   with this program. If not, see <http://www.gnu.org/licenses/>.
-#
-#   As a special exception, the respective Autoconf Macro's copyright owner
-#   gives unlimited permission to copy, distribute and modify the configure
-#   scripts that are the output of Autoconf when processing the Macro. You
-#   need not follow the terms of the GNU General Public License when using
-#   or distributing such scripts, even though portions of the text of the
-#   Macro appear in them. The GNU General Public License (GPL) does govern
-#   all other use of the material that constitutes the Autoconf Macro.
-#
-#   This special exception to the GPL applies to versions of the Autoconf
-#   Macro released by the Autoconf Archive. When you make and distribute a
-#   modified version of the Autoconf Macro, you may extend this special
-#   exception to the GPL to apply to your modified version as well.
+#   SPDX-License-Identifier: GPL-3.0-or-later
 
 #serial 21
 
diff --git a/m4/jemalloc.m4 b/build/m4/jemalloc.m4
index bb5dceb81..c2008a8ea 100644
--- a/m4/jemalloc.m4
+++ b/build/m4/jemalloc.m4
@@ -1,18 +1,5 @@
 dnl -------------------------------------------------------- -*- autoconf -*-
-dnl Licensed to the Apache Software Foundation (ASF) under one or more
-dnl contributor license agreements.  See the NOTICE file distributed with
-dnl this work for additional information regarding copyright ownership.
-dnl The ASF licenses this file to You under the Apache License, Version 2.0
-dnl (the "License"); you may not use this file except in compliance with
-dnl the License.  You may obtain a copy of the License at
-dnl
-dnl     http://www.apache.org/licenses/LICENSE-2.0
-dnl
-dnl Unless required by applicable law or agreed to in writing, software
-dnl distributed under the License is distributed on an "AS IS" BASIS,
-dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-dnl See the License for the specific language governing permissions and
-dnl limitations under the License.
+dnl SPDX-License-Identifier: Apache-2.0
 
 dnl
 dnl jemalloc.m4: Trafficserver's jemalloc autoconf macros
diff --git a/m4/tcmalloc.m4 b/build/m4/tcmalloc.m4
index e84697dc7..765d2accc 100644
--- a/m4/tcmalloc.m4
+++ b/build/m4/tcmalloc.m4
@@ -1,18 +1,5 @@
 dnl -------------------------------------------------------- -*- autoconf -*-
-dnl Licensed to the Apache Software Foundation (ASF) under one or more
-dnl contributor license agreements.  See the NOTICE file distributed with
-dnl this work for additional information regarding copyright ownership.
-dnl The ASF licenses this file to You under the Apache License, Version 2.0
-dnl (the "License"); you may not use this file except in compliance with
-dnl the License.  You may obtain a copy of the License at
-dnl
-dnl     http://www.apache.org/licenses/LICENSE-2.0
-dnl
-dnl Unless required by applicable law or agreed to in writing, software
-dnl distributed under the License is distributed on an "AS IS" BASIS,
-dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-dnl See the License for the specific language governing permissions and
-dnl limitations under the License.
+dnl SPDX-License-Identifier: Apache-2.0
 
 dnl
 dnl tcmalloc.m4: Trafficserver's tcmalloc autoconf macros
diff --git a/build/subst.inc b/build/subst.inc
index 9682cf882..8f9ac0551 100644
--- a/build/subst.inc
+++ b/build/subst.inc
@@ -4,6 +4,9 @@
 		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
 		-e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
 		-e 's#[@]pythondir_POST@#$(pythondir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
 		$< > $@.tmp; then \
 		mv "$@.tmp" "$@"; \
 	else \
diff --git a/charts.d/Makefile.am b/charts.d/Makefile.am
deleted file mode 100644
index 104ba86af..000000000
--- a/charts.d/Makefile.am
+++ /dev/null
@@ -1,31 +0,0 @@
-#
-# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
-#
-MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
-
-dist_charts_SCRIPTS = \
-	$(NULL)
-
-dist_charts_DATA = \
-	README.md \
-	ap.chart.sh \
-	apcupsd.chart.sh \
-	apache.chart.sh \
-	cpu_apps.chart.sh \
-	cpufreq.chart.sh \
-	example.chart.sh \
-	exim.chart.sh \
-	hddtemp.chart.sh \
-	libreswan.chart.sh \
-	load_average.chart.sh \
-	mem_apps.chart.sh \
-	mysql.chart.sh \
-	nginx.chart.sh \
-	nut.chart.sh \
-	opensips.chart.sh \
-	phpfpm.chart.sh \
-	postfix.chart.sh \
-	sensors.chart.sh \
-	squid.chart.sh \
-	tomcat.chart.sh \
-	$(NULL)
diff --git a/charts.d/README.md b/charts.d/README.md
deleted file mode 100644
index 748af08a1..000000000
--- a/charts.d/README.md
+++ /dev/null
@@ -1,344 +0,0 @@
-The following charts.d plugins are supported:
-
----
-
-# hddtemp
-
-The plugin will collect temperatures from disks 
-
-It will create one chart with all active disks
-
-1. **temperature in Celsius**
-
-### configuration
-
-hddtemp needs to be running in daemonized mode
-
-```sh
-# host with daemonized hddtemp
-hddtemp_host="localhost"
-
-# port on which hddtemp is showing data
-hddtemp_port="7634"
-
-# array of included disks
-# the default is to include all
-hddtemp_disks=()
-```
-
----
-
-# libreswan
-
-The plugin will collects bytes-in, bytes-out and uptime for all established libreswan IPSEC tunnels.
-
-The following charts are created, **per tunnel**:
-
-1. **Uptime**
-
- * the uptime of the tunnel
-
-2. **Traffic**
-
- * bytes in
- * bytes out
-
-### configuration
-
-Its config file is `/etc/netdata/charts.d/libreswan.conf`.
-
-The plugin executes 2 commands to collect all the information it needs:
-
-```sh
-ipsec whack --status
-ipsec whack --trafficstatus
-```
-
-The first command is used to extract the currently established tunnels, their IDs and their names.
-The second command is used to extract the current uptime and traffic.
-
-Most probably user `netdata` will not be able to query libreswan, so the `ipsec` commands will be denied.
-The plugin attempts to run `ipsec` as `sudo ipsec ...`, to get access to libreswan statistics.
-
-To allow user `netdata` execute `sudo ipsec ...`, create the file `/etc/sudoers.d/netdata` with this content:
-
-```
-netdata ALL = (root) NOPASSWD: /sbin/ipsec whack --status
-netdata ALL = (root) NOPASSWD: /sbin/ipsec whack --trafficstatus
-```
-
-Make sure the path `/sbin/ipsec` matches your setup (execute `which ipsec` to find the right path).
-
----
-
-# mysql
-
-The plugin will monitor one or more mysql servers
-
-It will produce the following charts:
-
-1. **Bandwidth** in kbps
- * in
- * out
-
-2. **Queries** in queries/sec
- * queries
- * questions
- * slow queries
-
-3. **Operations** in operations/sec
- * opened tables
- * flush
- * commit
- * delete
- * prepare
- * read first
- * read key
- * read next
- * read prev
- * read random
- * read random next
- * rollback
- * save point
- * update
- * write
-
-4. **Table Locks** in locks/sec
- * immediate
- * waited
-
-5. **Select Issues** in issues/sec
- * full join
- * full range join
- * range
- * range check
- * scan
-
-6. **Sort Issues** in issues/sec
- * merge passes
- * range
- * scan
-
-### configuration
-
-You can configure many database servers, like this:
-
-You can provide, per server, the following:
-
-1. a name, anything you like, but keep it short
-2. the mysql command to connect to the server
-3. the mysql command line options to be used for connecting to the server
-
-Here is an example for 2 servers:
-
-```sh
-mysql_opts[server1]="-h server1.example.com"
-mysql_opts[server2]="-h server2.example.com --connect_timeout 2"
-```
-
-The above will use the `mysql` command found in the system path.
-You can also provide a custom mysql command per server, like this:
-
-```sh
-mysql_cmds[server2]="/opt/mysql/bin/mysql"
-```
-
-The above sets the mysql command only for server2. server1 will use the system default.
-
-If no configuration is given, the plugin will attempt to connect to mysql server at localhost.
-
-
----
-
-# nut
-
-The plugin will collect UPS data for all UPSes configured in the system.
-
-The following charts will be created:
-
-1. **UPS Charge**
-
- * percentage changed
-
-2. **UPS Battery Voltage**
-
- * current voltage
- * high voltage
- * low voltage
- * nominal voltage
-
-3. **UPS Input Voltage**
-
- * current voltage
- * fault voltage
- * nominal voltage
-
-4. **UPS Input Current**
-
- * nominal current
-
-5. **UPS Input Frequency**
-
- * current frequency
- * nominal frequency
-
-6. **UPS Output Voltage**
-
- * current voltage
-
-7. **UPS Load**
-
- * current load
-
-8. **UPS Temperature**
-
- * current temperature
-
-
-### configuration
-
-This is the internal default for `/etc/netdata/nut.conf`
-
-```sh
-# a space separated list of UPS names
-# if empty, the list returned by 'upsc -l' will be used
-nut_ups=
-
-# how frequently to collect UPS data
-nut_update_every=2
-```
-
----
-
-# postfix
-
-The plugin will collect the postfix queue size.
-
-It will create two charts:
-
-1. **queue size in emails**
-2. **queue size in KB**
-
-### configuration
-
-This is the internal default for `/etc/netdata/postfix.conf`
-
-```sh
-# the postqueue command
-# if empty, it will use the one found in the system path
-postfix_postqueue=
-
-# how frequently to collect queue size
-postfix_update_every=15
-```
-
----
-
-# sensors
-
-The plugin will provide charts for all configured system sensors
-
-> This plugin is reading sensors directly from the kernel.
-> The `lm-sensors` package is able to perform calculations on the
-> kernel provided values, this plugin will not perform.
-> So, the values graphed, are the raw hardware values of the sensors.
-
-The plugin will create netdata charts for:
-
-1. **Temperature**
-2. **Voltage**
-3. **Current**
-4. **Power**
-5. **Fans Speed**
-6. **Energy**
-7. **Humidity**
-
-One chart for every sensor chip found and each of the above will be created.
-
-### configuration
-
-This is the internal default for `/etc/netdata/sensors.conf`
-
-```sh
-# the directory the kernel keeps sensor data
-sensors_sys_dir="${NETDATA_HOST_PREFIX}/sys/devices"
-
-# how deep in the tree to check for sensor data
-sensors_sys_depth=10
-
-# if set to 1, the script will overwrite internal
-# script functions with code generated ones
-# leave to 1, is faster
-sensors_source_update=1
-
-# how frequently to collect sensor data
-# the default is to collect it at every iteration of charts.d
-sensors_update_every=
-
-# array of sensors which are excluded
-# the default is to include all
-sensors_excluded=()
-```
-
----
-
-# squid
-
-The plugin will monitor a squid server.
-
-It will produce 4 charts:
-
-1. **Squid Client Bandwidth** in kbps
-
- * in
- * out
- * hits
-
-2. **Squid Client Requests** in requests/sec
-
- * requests
- * hits
- * errors
-
-3. **Squid Server Bandwidth** in kbps
-
- * in
- * out
-
-4. **Squid Server Requests** in requests/sec
-
- * requests
- * errors
-
-### autoconfig
-
-The plugin will by itself detect squid servers running on
-localhost, on ports 3128 or 8080.
-
-It will attempt to download URLs in the form:
-
-- `cache_object://HOST:PORT/counters`
-- `/squid-internal-mgr/counters`
-
-If any succeeds, it will use this.
-
-### configuration
-
-If you need to configure it by hand, create the file
-`/etc/netdata/squid.conf` with the following variables:
-
-- `squid_host=IP` the IP of the squid host
-- `squid_port=PORT` the port the squid is listening
-- `squid_url="URL"` the URL with the statistics to be fetched from squid
-- `squid_timeout=SECONDS` how much time we should wait for squid to respond
-- `squid_update_every=SECONDS` the frequency of the data collection
-
-Example `/etc/netdata/squid.conf`:
-
-```sh
-squid_host=127.0.0.1
-squid_port=3128
-squid_url="cache_object://127.0.0.1:3128/counters"
-squid_timeout=2
-squid_update_every=5
-```
diff --git a/collectors/Makefile.am b/collectors/Makefile.am
new file mode 100644
index 000000000..4ecd1f176
--- /dev/null
+++ b/collectors/Makefile.am
@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    plugins.d \
+    apps.plugin \
+    cgroups.plugin \
+    charts.d.plugin \
+    checks.plugin \
+    diskspace.plugin \
+    fping.plugin \
+    freebsd.plugin \
+    freeipmi.plugin \
+    idlejitter.plugin \
+    macos.plugin \
+    nfacct.plugin \
+    node.d.plugin \
+    proc.plugin \
+    python.d.plugin \
+    statsd.plugin \
+    tc.plugin \
+   	$(NULL)
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/collectors/Makefile.in b/collectors/Makefile.in
new file mode 100644
index 000000000..357f69d7a
--- /dev/null
+++ b/collectors/Makefile.in
@@ -0,0 +1,663 @@
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+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
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+
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+
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+    nfacct.plugin \
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+    proc.plugin \
+    python.d.plugin \
+    statsd.plugin \
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+   	$(NULL)
+
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+	      exit 1;; \
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+	$(am__cd) $(top_srcdir) && \
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+# (1) if the variable is set in 'config.status', edit 'config.status'
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+	  *) list='$(SUBDIRS)' ;; \
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+	  empty_fix=.; \
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+	  include_option=--include; \
+	  empty_fix=; \
+	fi; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
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+	$(am__define_uniq_tagged_files); \
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+	test -z "$(CTAGS_ARGS)$$unique" \
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+	     $$unique
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+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
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+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
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+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
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+distclean-tags:
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+distdir: $(DISTFILES)
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+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
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+
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+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
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+.MAKE: $(am__recursive_targets) install-am install-strip
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+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-am clean clean-generic cscopelist-am ctags ctags-am \
+	distclean distclean-generic distclean-tags distdir dvi dvi-am \
+	html html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/README.md b/collectors/README.md
new file mode 100644
index 000000000..b7fc73286
--- /dev/null
+++ b/collectors/README.md
@@ -0,0 +1,118 @@
+# Data Collection Plugins
+
+netdata supports **internal** and **external** data collection plugins:
+
+- **internal** plugins are written in `C` and run as threads inside the netdata daemon.
+
+- **external** plugins may be written in any computer language and are spawn as independent long-running processes by the netdata daemon.
+   They communicate with the netdata daemon via `pipes` (`stdout` communication).
+
+To minimize the number of processes spawn for data collection, netdata also supports **plugin orchestrators**.
+
+- **plugin orchestrators** are external plugins that do not collect any data by themeselves.
+   Instead they support data collection **modules** written in the language of the orchestrator.
+   Usually the orchestrator provides a higher level abstraction, making it ideal for writing new
+   data collection modules with the minimum of code.
+   
+   Currently netdata provides plugin orchestrators
+   BASH v4+ [charts.d.plugin](charts.d.plugin),
+   node.js [node.d.plugin](node.d.plugin) and
+   python v2+ (including v3) [python.d.plugin](python.d.plugin).
+
+## Netdata Plugins
+
+plugin|lang|O/S|runs as|modular|description
+:---:|:---:|:---:|:---:|:---:|:---
+[apps.plugin](apps.plugin/)|`C`|linux, freebsd|external|-|monitors the whole process tree on Linux and FreeBSD and breaks down system resource usage by **process**, **user** and **user group**.
+[cgroups.plugin](cgroups.plugin/)|`C`|linux|internal|-|collects resource usage of **Containers**, libvirt **VMs** and **systemd services**, on Linux systems
+[charts.d.plugin](charts.d.plugin/)|`BASH` v4+|any|external|yes|a **plugin orchestrator** for data collection modules written in `BASH` v4+.
+[checks.plugin](checks.plugin/)|`C`|any|internal|-|a debugging plugin (by default it is disabled)
+[diskspace.plugin](diskspace.plugin/)|`C`|linux|internal|-|collects disk space usage metrics on Linux mount points
+[fping.plugin](fping.plugin/)|`C`|any|external|-|measures network latency, jitter and packet loss between the monitored node and any number of remote network end points.
+[freebsd.plugin](freebsd.plugin/)|`C`|freebsd|internal|yes|collects resource usage and performance data on FreeBSD systems
+[freeipmi.plugin](freeipmi.plugin/)|`C`|linux, freebsd|external|-|collects metrics from enterprise hardware sensors, on Linux and FreeBSD servers.
+[idlejitter.plugin](idlejitter.plugin/)|`C`|any|internal|-|measures CPU latency and jitter on all operating systems
+[macos.plugin](macos.plugin/)|`C`|macos|internal|yes|collects resource usage and performance data on MacOS systems
+[nfacct.plugin](nfacct.plugin/)|`C`|linux|internal|-|collects netfilter firewall, connection tracker and accounting metrics using `libmnl` and `libnetfilter_acct`
+[node.d.plugin](node.d.plugin/)|`node.js`|any|external|yes|a **plugin orchestrator** for data collection modules written in `node.js`.
+[plugins.d](plugins.d/)|`C`|any|internal|-|implements the **external plugins** API and serves external plugins
+[proc.plugin](proc.plugin/)|`C`|linux|internal|yes|collects resource usage and performance data on Linux systems
+[python.d.plugin](python.d.plugin/)|`python` v2+|any|external|yes|a **plugin orchestrator** for data collection modules written in `python` v2 or v3 (both are supported).
+[statsd.plugin](statsd.plugin/)|`C`|any|internal|-|implements a high performance **statsd** server for netdata
+[tc.plugin](tc.plugin/)|`C`|linux|internal|-|collects traffic QoS metrics (`tc`) of Linux network interfaces
+
+## Enabling and Disabling plugins
+
+Each plugin can be enabled or disabled via `netdata.conf`, section `[plugins]`.
+
+At this section there a list of all the plugins with a boolean setting to enable them or disable them. 
+
+The exception is `statsd.plugin` that has its own `[statsd]` section.
+
+Once a plugin is enabled, consult the page of each plugin for additional configuration options.
+
+All **external plugins** are managed by [plugins.d](plugins.d/), which provides additional management options.
+
+### Internal Plugins
+
+Each of the internal plugins runs as a thread inside the netdata daemon.
+Once this thread has started, the plugin may spawn additional threads according to its design.
+
+#### Internal Plugins API
+
+The internal data collection API consists of the following calls:
+
+```c
+collect_data() {
+    // collect data here (one iteration)
+    
+    collected_number collected_value = collect_a_value();
+    
+    // give the metrics to netdata
+    
+    static RRDSET *st = NULL; // the chart
+    static RRDDIM *rd = NULL; // a dimension attached to this chart
+    
+    if(unlikely(!st)) {
+        // we haven't created this chart before
+        // create it now
+        st = rrdset_create_localhost(
+                "type"
+                , "id"
+                , "name"
+                , "family"
+                , "context"
+                , "Chart Title"
+                , "units"
+                , "plugin-name"
+                , "module-name"
+                , priority
+                , update_every
+                , chart_type
+        );
+
+        // attach a metric to it
+        rd = rrddim_add(st, "id", "name", multiplier, divider, algorithm);
+    }
+    else {
+        // this chart is already created
+        // let netdata know we start a new iteration on it
+        rrdset_next(st);
+    }
+    
+    // give the collected value(s) to the chart
+    rrddim_set_by_pointer(st, rd, collected_value);
+    
+    // signal netdata we are done with this iteration
+    rrdset_done(st);
+}
+```
+
+Of course netdata has a lot of libraries to help you also in collecting the metrics.
+The best way to find your way through this, is to examine what other similar plugins do.
+
+
+### External Plugins
+
+**External plugins** use the API and are managed by [plugins.d](plugins.d/).
+
diff --git a/collectors/all.h b/collectors/all.h
new file mode 100644
index 000000000..aa19bd5bd
--- /dev/null
+++ b/collectors/all.h
@@ -0,0 +1,318 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_ALL_H
+#define NETDATA_ALL_H 1
+
+#include "../daemon/common.h"
+
+// netdata internal data collection plugins
+
+#include "checks.plugin/plugin_checks.h"
+#include "freebsd.plugin/plugin_freebsd.h"
+#include "idlejitter.plugin/plugin_idlejitter.h"
+#include "cgroups.plugin/sys_fs_cgroup.h"
+#include "diskspace.plugin/plugin_diskspace.h"
+#include "nfacct.plugin/plugin_nfacct.h"
+#include "proc.plugin/plugin_proc.h"
+#include "tc.plugin/plugin_tc.h"
+#include "macos.plugin/plugin_macos.h"
+#include "statsd.plugin/statsd.h"
+
+#include "plugins.d/plugins_d.h"
+
+
+// ----------------------------------------------------------------------------
+// netdata chart priorities
+
+// This is a work in progress - to scope is to collect here all chart priorities.
+// These should be based on the CONTEXT of the charts + the chart id when needed
+// - for each SECTION +1000 (or +X000 for big sections)
+// - for each FAMILY  +100
+// - for each CHART   +10
+
+#define NETDATA_CHART_PRIO_SYSTEM_CPU                  100
+#define NETDATA_CHART_PRIO_SYSTEM_LOAD                 100
+#define NETDATA_CHART_PRIO_SYSTEM_IO                   150
+#define NETDATA_CHART_PRIO_SYSTEM_PGPGIO               151
+#define NETDATA_CHART_PRIO_SYSTEM_RAM                  200
+#define NETDATA_CHART_PRIO_SYSTEM_SWAP                 201
+#define NETDATA_CHART_PRIO_SYSTEM_SWAPIO               250
+#define NETDATA_CHART_PRIO_SYSTEM_NET                  500
+#define NETDATA_CHART_PRIO_SYSTEM_IPV4                 500 // freebsd only
+#define NETDATA_CHART_PRIO_SYSTEM_IP                   501
+#define NETDATA_CHART_PRIO_SYSTEM_IPV6                 502
+#define NETDATA_CHART_PRIO_SYSTEM_PROCESSES            600
+#define NETDATA_CHART_PRIO_SYSTEM_FORKS                700
+#define NETDATA_CHART_PRIO_SYSTEM_ACTIVE_PROCESSES     750
+#define NETDATA_CHART_PRIO_SYSTEM_CTXT                 800
+#define NETDATA_CHART_PRIO_SYSTEM_IDLEJITTER           800
+#define NETDATA_CHART_PRIO_SYSTEM_INTR                 900
+#define NETDATA_CHART_PRIO_SYSTEM_SOFTIRQS             950
+#define NETDATA_CHART_PRIO_SYSTEM_SOFTNET_STAT         955
+#define NETDATA_CHART_PRIO_SYSTEM_INTERRUPTS          1000
+#define NETDATA_CHART_PRIO_SYSTEM_DEV_INTR            1000 // freebsd only
+#define NETDATA_CHART_PRIO_SYSTEM_SOFT_INTR           1100 // freebsd only
+#define NETDATA_CHART_PRIO_SYSTEM_ENTROPY             1000
+#define NETDATA_CHART_PRIO_SYSTEM_UPTIME              1000
+#define NETDATA_CHART_PRIO_SYSTEM_IPC_MSQ_QUEUES       990 // freebsd only
+#define NETDATA_CHART_PRIO_SYSTEM_IPC_MSQ_MESSAGES    1000 // freebsd only
+#define NETDATA_CHART_PRIO_SYSTEM_IPC_MSQ_SIZE        1100 // freebsd only
+#define NETDATA_CHART_PRIO_SYSTEM_IPC_SEMAPHORES      1000
+#define NETDATA_CHART_PRIO_SYSTEM_IPC_SEM_ARRAYS      1000
+#define NETDATA_CHART_PRIO_SYSTEM_IPC_SHARED_MEM_SEGS 1000 // freebsd only
+#define NETDATA_CHART_PRIO_SYSTEM_IPC_SHARED_MEM_SIZE 1000 // freebsd only
+#define NETDATA_CHART_PRIO_SYSTEM_PACKETS             7001 // freebsd only
+
+
+// CPU per core
+
+#define NETDATA_CHART_PRIO_CPU_PER_CORE               1000 // +1 per core
+#define NETDATA_CHART_PRIO_CPU_TEMPERATURE            1050 // freebsd only
+#define NETDATA_CHART_PRIO_CPUFREQ_SCALING_CUR_FREQ   5003 // freebsd only
+
+#define NETDATA_CHART_PRIO_CORE_THROTTLING            5001
+#define NETDATA_CHART_PRIO_PACKAGE_THROTTLING         5002
+
+// Interrupts per core
+
+#define NETDATA_CHART_PRIO_INTERRUPTS_PER_CORE        1100 // +1 per core
+
+// Memory Section - 1xxx
+
+#define NETDATA_CHART_PRIO_MEM_SYSTEM_AVAILABLE       1010
+#define NETDATA_CHART_PRIO_MEM_SYSTEM_COMMITTED       1020
+#define NETDATA_CHART_PRIO_MEM_SYSTEM_PGFAULTS        1030
+#define NETDATA_CHART_PRIO_MEM_KERNEL                 1100
+#define NETDATA_CHART_PRIO_MEM_SLAB                   1200
+#define NETDATA_CHART_PRIO_MEM_HUGEPAGES              1250
+#define NETDATA_CHART_PRIO_MEM_KSM                    1300
+#define NETDATA_CHART_PRIO_MEM_KSM_SAVINGS            1301
+#define NETDATA_CHART_PRIO_MEM_KSM_RATIOS             1302
+#define NETDATA_CHART_PRIO_MEM_NUMA                   1400
+#define NETDATA_CHART_PRIO_MEM_NUMA_NODES             1410
+#define NETDATA_CHART_PRIO_MEM_HW                     1500
+#define NETDATA_CHART_PRIO_MEM_HW_ECC_CE              1550
+#define NETDATA_CHART_PRIO_MEM_HW_ECC_UE              1560
+
+// Disks
+
+#define NETDATA_CHART_PRIO_DISK_IO                    2000
+#define NETDATA_CHART_PRIO_DISK_OPS                   2001
+#define NETDATA_CHART_PRIO_DISK_QOPS                  2002
+#define NETDATA_CHART_PRIO_DISK_BACKLOG               2003
+#define NETDATA_CHART_PRIO_DISK_UTIL                  2004
+#define NETDATA_CHART_PRIO_DISK_AWAIT                 2005
+#define NETDATA_CHART_PRIO_DISK_AVGSZ                 2006
+#define NETDATA_CHART_PRIO_DISK_SVCTM                 2007
+#define NETDATA_CHART_PRIO_DISK_MOPS                  2021
+#define NETDATA_CHART_PRIO_DISK_IOTIME                2022
+#define NETDATA_CHART_PRIO_BCACHE_CACHE_ALLOC         2120
+#define NETDATA_CHART_PRIO_BCACHE_HIT_RATIO           2120
+#define NETDATA_CHART_PRIO_BCACHE_RATES               2121
+#define NETDATA_CHART_PRIO_BCACHE_SIZE                2122
+#define NETDATA_CHART_PRIO_BCACHE_USAGE               2123
+#define NETDATA_CHART_PRIO_BCACHE_OPS                 2124
+#define NETDATA_CHART_PRIO_BCACHE_BYPASS              2125
+#define NETDATA_CHART_PRIO_BCACHE_CACHE_READ_RACES    2126
+
+#define NETDATA_CHART_PRIO_DISKSPACE_SPACE            2023
+#define NETDATA_CHART_PRIO_DISKSPACE_INODES           2024
+
+// NFS (server)
+
+#define NETDATA_CHART_PRIO_NFSD_READCACHE             2100
+#define NETDATA_CHART_PRIO_NFSD_FILEHANDLES           2101
+#define NETDATA_CHART_PRIO_NFSD_IO                    2102
+#define NETDATA_CHART_PRIO_NFSD_THREADS               2103
+#define NETDATA_CHART_PRIO_NFSD_THREADS_FULLCNT       2104
+#define NETDATA_CHART_PRIO_NFSD_THREADS_HISTOGRAM     2105
+#define NETDATA_CHART_PRIO_NFSD_READAHEAD             2105
+#define NETDATA_CHART_PRIO_NFSD_NET                   2107
+#define NETDATA_CHART_PRIO_NFSD_RPC                   2108
+#define NETDATA_CHART_PRIO_NFSD_PROC2                 2109
+#define NETDATA_CHART_PRIO_NFSD_PROC3                 2110
+#define NETDATA_CHART_PRIO_NFSD_PROC4                 2111
+#define NETDATA_CHART_PRIO_NFSD_PROC4OPS              2112
+
+// NFS (client)
+
+#define NETDATA_CHART_PRIO_NFS_NET                    2207
+#define NETDATA_CHART_PRIO_NFS_RPC                    2208
+#define NETDATA_CHART_PRIO_NFS_PROC2                  2209
+#define NETDATA_CHART_PRIO_NFS_PROC3                  2210
+#define NETDATA_CHART_PRIO_NFS_PROC4                  2211
+
+// BTRFS
+
+#define NETDATA_CHART_PRIO_BTRFS_DISK                 2300
+#define NETDATA_CHART_PRIO_BTRFS_DATA                 2301
+#define NETDATA_CHART_PRIO_BTRFS_METADATA             2302
+#define NETDATA_CHART_PRIO_BTRFS_SYSTEM               2303
+
+// ZFS
+
+#define NETDATA_CHART_PRIO_ZFS_ARC_SIZE               2500
+#define NETDATA_CHART_PRIO_ZFS_L2_SIZE                2500
+#define NETDATA_CHART_PRIO_ZFS_READS                  2510
+#define NETDATA_CHART_PRIO_ZFS_ACTUAL_HITS            2519
+#define NETDATA_CHART_PRIO_ZFS_ARC_SIZE_BREAKDOWN     2520
+#define NETDATA_CHART_PRIO_ZFS_IMPORTANT_OPS          2522
+#define NETDATA_CHART_PRIO_ZFS_MEMORY_OPS             2523
+#define NETDATA_CHART_PRIO_ZFS_IO                     2700
+#define NETDATA_CHART_PRIO_ZFS_HITS                   2520
+#define NETDATA_CHART_PRIO_ZFS_DHITS                  2530
+#define NETDATA_CHART_PRIO_ZFS_DEMAND_DATA_HITS       2531
+#define NETDATA_CHART_PRIO_ZFS_PREFETCH_DATA_HITS     2532
+#define NETDATA_CHART_PRIO_ZFS_PHITS                  2540
+#define NETDATA_CHART_PRIO_ZFS_MHITS                  2550
+#define NETDATA_CHART_PRIO_ZFS_L2HITS                 2560
+#define NETDATA_CHART_PRIO_ZFS_LIST_HITS              2600
+#define NETDATA_CHART_PRIO_ZFS_HASH_ELEMENTS          2800
+#define NETDATA_CHART_PRIO_ZFS_HASH_CHAINS            2810
+
+
+// SOFTIRQs
+
+#define NETDATA_CHART_PRIO_SOFTIRQS_PER_CORE          3000 // +1 per core
+
+// IPFW (freebsd)
+
+#define NETDATA_CHART_PRIO_IPFW_PACKETS               3001
+#define NETDATA_CHART_PRIO_IPFW_BYTES                 3002
+#define NETDATA_CHART_PRIO_IPFW_ACTIVE                3003
+#define NETDATA_CHART_PRIO_IPFW_EXPIRED               3004
+#define NETDATA_CHART_PRIO_IPFW_MEM                   3005
+
+
+// IPVS
+
+#define NETDATA_CHART_PRIO_IPVS_NET                   3100
+#define NETDATA_CHART_PRIO_IPVS_SOCKETS               3101
+#define NETDATA_CHART_PRIO_IPVS_PACKETS               3102
+
+// Softnet
+
+#define NETDATA_CHART_PRIO_SOFTNET_PER_CORE           4101 // +1 per core
+
+// IP STACK
+
+#define NETDATA_CHART_PRIO_IP_ERRORS                  4100
+#define NETDATA_CHART_PRIO_IP_TCP_CONNABORTS          4210
+#define NETDATA_CHART_PRIO_IP_TCP_SYN_QUEUE           4215
+#define NETDATA_CHART_PRIO_IP_TCP_ACCEPT_QUEUE        4216
+#define NETDATA_CHART_PRIO_IP_TCP_REORDERS            4220
+#define NETDATA_CHART_PRIO_IP_TCP_OFO                 4250
+#define NETDATA_CHART_PRIO_IP_TCP_SYNCOOKIES          4260
+#define NETDATA_CHART_PRIO_IP_TCP_MEM                 4290
+#define NETDATA_CHART_PRIO_IP_BCAST                   4500
+#define NETDATA_CHART_PRIO_IP_BCAST_PACKETS           4510
+#define NETDATA_CHART_PRIO_IP_MCAST                   4600
+#define NETDATA_CHART_PRIO_IP_MCAST_PACKETS           4610
+#define NETDATA_CHART_PRIO_IP_ECN                     4700
+
+// IPv4
+
+#define NETDATA_CHART_PRIO_IPV4_SOCKETS               5100
+#define NETDATA_CHART_PRIO_IPV4_PACKETS               5130
+#define NETDATA_CHART_PRIO_IPV4_ERRORS                5150
+#define NETDATA_CHART_PRIO_IPV4_ICMP                  5170
+#define NETDATA_CHART_PRIO_IPV4_TCP                   5200
+#define NETDATA_CHART_PRIO_IPV4_TCP_SOCKETS           5201
+#define NETDATA_CHART_PRIO_IPV4_TCP_MEM               5290
+#define NETDATA_CHART_PRIO_IPV4_UDP                   5300
+#define NETDATA_CHART_PRIO_IPV4_UDP_MEM               5390
+#define NETDATA_CHART_PRIO_IPV4_UDPLITE               5400
+#define NETDATA_CHART_PRIO_IPV4_RAW                   5450
+#define NETDATA_CHART_PRIO_IPV4_FRAGMENTS             5460
+#define NETDATA_CHART_PRIO_IPV4_FRAGMENTS_MEM         5470
+
+// IPv6
+
+#define NETDATA_CHART_PRIO_IPV6_PACKETS               6200
+#define NETDATA_CHART_PRIO_IPV6_ECT                   6210
+#define NETDATA_CHART_PRIO_IPV6_ERRORS                6300
+#define NETDATA_CHART_PRIO_IPV6_FRAGMENTS             6400
+#define NETDATA_CHART_PRIO_IPV6_FRAGSOUT              6401
+#define NETDATA_CHART_PRIO_IPV6_FRAGSIN               6402
+#define NETDATA_CHART_PRIO_IPV6_TCP                   6500
+#define NETDATA_CHART_PRIO_IPV6_UDP                   6600
+#define NETDATA_CHART_PRIO_IPV6_UDP_PACKETS           6601
+#define NETDATA_CHART_PRIO_IPV6_UDP_ERRORS            6610
+#define NETDATA_CHART_PRIO_IPV6_UDPLITE               6700
+#define NETDATA_CHART_PRIO_IPV6_UDPLITE_PACKETS       6701
+#define NETDATA_CHART_PRIO_IPV6_UDPLITE_ERRORS        6710
+#define NETDATA_CHART_PRIO_IPV6_RAW                   6800
+#define NETDATA_CHART_PRIO_IPV6_BCAST                 6840
+#define NETDATA_CHART_PRIO_IPV6_MCAST                 6850
+#define NETDATA_CHART_PRIO_IPV6_MCAST_PACKETS         6851
+#define NETDATA_CHART_PRIO_IPV6_ICMP                  6900
+#define NETDATA_CHART_PRIO_IPV6_ICMP_REDIR            6910
+#define NETDATA_CHART_PRIO_IPV6_ICMP_ERRORS           6920
+#define NETDATA_CHART_PRIO_IPV6_ICMP_ECHOS            6930
+#define NETDATA_CHART_PRIO_IPV6_ICMP_GROUPMEMB        6940
+#define NETDATA_CHART_PRIO_IPV6_ICMP_ROUTER           6950
+#define NETDATA_CHART_PRIO_IPV6_ICMP_NEIGHBOR         6960
+#define NETDATA_CHART_PRIO_IPV6_ICMP_LDV2             6970
+#define NETDATA_CHART_PRIO_IPV6_ICMP_TYPES            6980
+
+
+// Network interfaces
+
+#define NETDATA_CHART_PRIO_FIRST_NET_IFACE            7000 // 6 charts per interface
+#define NETDATA_CHART_PRIO_FIRST_NET_PACKETS          7001
+#define NETDATA_CHART_PRIO_FIRST_NET_ERRORS           7002
+#define NETDATA_CHART_PRIO_FIRST_NET_DROPS            7003
+#define NETDATA_CHART_PRIO_FIRST_NET_EVENTS           7006
+#define NETDATA_CHART_PRIO_CGROUP_NET_IFACE          43000
+
+// SCTP
+
+#define NETDATA_CHART_PRIO_SCTP                       7000
+
+// QoS
+
+#define NETDATA_CHART_PRIO_TC_QOS                     7000
+#define NETDATA_CHART_PRIO_TC_QOS_PACKETS             7010
+#define NETDATA_CHART_PRIO_TC_QOS_DROPPED             7020
+#define NETDATA_CHART_PRIO_TC_QOS_TOCKENS             7030
+#define NETDATA_CHART_PRIO_TC_QOS_CTOCKENS            7040
+
+
+// Netfilter
+
+#define NETDATA_CHART_PRIO_NETFILTER_SOCKETS          8700
+#define NETDATA_CHART_PRIO_NETFILTER_NEW              8701
+#define NETDATA_CHART_PRIO_NETFILTER_CHANGES          8702
+#define NETDATA_CHART_PRIO_NETFILTER_EXPECT           8703
+#define NETDATA_CHART_PRIO_NETFILTER_ERRORS           8705
+#define NETDATA_CHART_PRIO_NETFILTER_SEARCH           8710
+
+#define NETDATA_CHART_PRIO_NETFILTER_PACKETS          8906
+#define NETDATA_CHART_PRIO_NETFILTER_BYTES            8907
+
+// SYNPROXY
+
+#define NETDATA_CHART_PRIO_SYNPROXY_SYN_RECEIVED      8751
+#define NETDATA_CHART_PRIO_SYNPROXY_COOKIES           8752
+#define NETDATA_CHART_PRIO_SYNPROXY_CONN_OPEN         8753
+#define NETDATA_CHART_PRIO_SYNPROXY_ENTRIES           8754
+
+// CGROUPS
+
+#define NETDATA_CHART_PRIO_CGROUPS_SYSTEMD           19000 // many charts
+#define NETDATA_CHART_PRIO_CGROUPS_CONTAINERS        40000 // many charts
+
+// STATSD
+
+#define NETDATA_CHART_PRIO_STATSD_PRIVATE            90000 // many charts
+
+// INTERNAL NETDATA INFO
+
+#define NETDATA_CHART_PRIO_CHECKS                    99999
+
+#define NETDATA_CHART_PRIO_NETDATA_DISKSPACE        132020
+#define NETDATA_CHART_PRIO_NETDATA_TC_CPU           135000
+#define NETDATA_CHART_PRIO_NETDATA_TC_TIME          135001
+
+
+#endif //NETDATA_ALL_H
diff --git a/collectors/apps.plugin/Makefile.am b/collectors/apps.plugin/Makefile.am
new file mode 100644
index 000000000..be0306492
--- /dev/null
+++ b/collectors/apps.plugin/Makefile.am
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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+
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+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+dist_libconfig_DATA = \
+    apps_groups.conf \
+    $(NULL)
diff --git a/collectors/apps.plugin/Makefile.in b/collectors/apps.plugin/Makefile.in
new file mode 100644
index 000000000..38120c048
--- /dev/null
+++ b/collectors/apps.plugin/Makefile.in
@@ -0,0 +1,521 @@
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+	$(NULL)
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+uninstall-dist_libconfigDATA:
+	@$(NORMAL_UNINSTALL)
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+	install-pdf install-pdf-am install-ps install-ps-am \
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/apps.plugin/README.md b/collectors/apps.plugin/README.md
new file mode 100644
index 000000000..05680efe8
--- /dev/null
+++ b/collectors/apps.plugin/README.md
@@ -0,0 +1,372 @@
+# apps.plugin
+
+`apps.plugin` breaks down system resource usage to **processes**, **users** and **user groups**.
+
+To achieve this task, it iterates through the whole process tree, collecting resource usage information
+for every process found running.
+
+Since netdata needs to present this information in charts and track them through time,
+instead of presenting a `top` like list, `apps.plugin` uses a pre-defined list of **process groups**
+to which it assigns all running processes. This list is [customizable](apps_groups.conf) and netdata
+ships with a good default for most cases (to edit it on your system run `/etc/netdata/edit-config apps_groups.conf`).
+
+So, `apps.plugin` builds a process tree (much like `ps fax` does in Linux), and groups
+processes together (evaluating both child and parent processes) so that the result is always a list with
+a predefined set of members (of course, only process groups found running are reported).
+
+> If you find that `apps.plugin` categorizes standard applications as `other`, we would be
+> glad to accept pull requests improving the [defaults](apps_groups.conf) shipped with netdata.
+
+Unlike traditional process monitoring tools (like `top`), `apps.plugin` is able to account the resource
+utilization of exit processes. Their utilization is accounted at their currently running parents.
+So, `apps.plugin` is perfectly able to measure the resources used by shell scripts and other processes
+that fork/spawn other short lived processes hundreds of times per second.
+
+## Charts
+
+`apps.plugin` provides charts for 3 sections:
+
+1. Per application charts as **Applications** at netdata dashboards
+2. Per user charts as **Users** at netdata dashboards
+3. Per user group charts as **User Groups** at netdata dashboards
+
+Each of these sections provides the same number of charts:
+
+- CPU Utilization
+    - Total CPU usage
+    - User / System CPU usage
+- Disk I/O
+    - Physical Reads / Writes
+    - Logical Reads / Writes
+    - Open Unique Files (if a file is found open multiple times, it is counted just once)
+- Memory
+    - Real Memory Used (non shared)
+    - Virtual Memory Allocated
+    - Minor Page Faults (i.e. memory activity)
+- Processes
+    - Threads Running
+    - Processes Running
+    - Pipes Open
+- Swap Memory
+    - Swap Memory Used
+    - Major Page Faults (i.e. swap activity)
+- Network
+    - Sockets Open
+
+The above are reported:
+
+- For **Applications** per [target configured](apps_groups.conf).
+- For **Users** per username or UID (when the username is not available).
+- For **User Groups** per groupname or GID (when groupname is not available).
+
+## Performance
+
+`apps.plugin` is a complex piece of software and has a lot of work to do
+We are proud that `apps.plugin` is a lot faster compared to any other similar tool,
+while collecting a lot more information for the processes, however the fact is that
+this plugin requires more CPU resources than the netdata daemon itself.
+
+Under Linux, for each process running, `apps.plugin` reads several `/proc` files
+per process. Doing this work per-second, especially on hosts with several thousands
+of processes, may increase the CPU resources consumed by the plugin.
+
+In such cases, you many need to lower its data collection frequency.
+
+To do this, edit `/etc/netdata/netdata.conf` and find this section:
+
+```
+[plugin:apps]
+	# update every = 1
+	# command options = 
+```
+
+Uncomment the line `update every` and set it to a higher number. If you just set it to ` 2 `,
+its CPU resources will be cut in half, and data collection will be once every 2 seconds.
+
+## Configuration
+
+The configuration file is `/etc/netdata/apps_groups.conf` (the default is [here](apps_groups.conf)).
+To edit it on your system run `/etc/netdata/edit-config apps_groups.conf`.
+
+The configuration file works accepts multiple lines, each having this format:
+
+```txt
+group: process1 process2 ...
+```
+
+Each group can be given multiple times, to add more processes to it.
+
+For the **Applications** section, only groups configured in this file are reported.
+All other processes will be reported as `other`.
+
+For each process given, its whole process tree will be grouped, not just the process matched.
+The plugin will include both parents and children.
+
+The process names are the ones returned by:
+
+  - `ps -e` or `cat /proc/PID/stat`
+  - in case of substring mode (see below): `/proc/PID/cmdline`
+
+To add process names with spaces, enclose them in quotes (single or double)
+example: ` 'Plex Media Serv' ` or ` "my other process" `.
+
+You can add an asterisk ` * ` at the beginning and/or the end of a process:
+
+  - `*name` *suffix* mode: will search for processes ending with `name` (at `/proc/PID/stat`)
+  - `name*` *prefix* mode: will search for processes beginning with `name` (at `/proc/PID/stat`)
+  - `*name*` *substring* mode: will search for `name` in the whole command line (at `/proc/PID/cmdline`)
+
+If you enter even just one *name* (substring), `apps.plugin` will process
+`/proc/PID/cmdline` for all processes (of course only once per process: when they are first seen).
+
+To add processes with single quotes, enclose them in double quotes: ` "process with this ' single quote" `
+
+To add processes with double quotes, enclose them in single quotes: ` 'process with this " double quote' `
+
+If a group or process name starts with a ` - `, the dimension will be hidden from the chart (cpu chart only).
+
+If a process starts with a ` + `, debugging will be enabled for it (debugging produces a lot of output - do not enable it in production systems).
+
+You can add any number of groups. Only the ones found running will affect the charts generated.
+However, producing charts with hundreds of dimensions may slow down your web browser.
+
+The order of the entries in this list is important: the first that matches a process is used, so put important
+ones at the top. Processes not matched by any row, will inherit it from their parents or children.
+
+The order also controls the order of the dimensions on the generated charts (although applications started
+after apps.plugin is started, will be appended to the existing list of dimensions the netdata daemon maintains).
+
+## Permissions
+
+`apps.plugin` requires additional privileges to collect all the information it needs.
+The problem is described in issue #157.
+
+When netdata is installed, `apps.plugin` is given the capabilities `cap_dac_read_search,cap_sys_ptrace+ep`.
+If this fails (i.e. `setcap` fails), `apps.plugin` is setuid to `root`.
+
+#### linux capabilities in containers
+
+There are a few cases, like `docker` and `virtuozzo` containers, where `setcap` succeeds, but the capabilities
+are silently ignored (in `lxc` containers `setcap` fails).
+
+In these cases ()`setcap` succeeds but capabilities do not work), you will have to setuid
+to root `apps.plugin` by running these commands:
+
+```sh
+chown root:netdata /usr/libexec/netdata/plugins.d/apps.plugin
+chmod 4750 /usr/libexec/netdata/plugins.d/apps.plugin
+```
+
+You will have to run these, every time you update netdata.
+
+## Security
+
+`apps.plugin` performs a hard-coded function of building the process tree in memory,
+iterating forever, collecting metrics for each running process and sending them to netdata.
+This is a one-way communication, from `apps.plugin` to netdata.
+
+So, since `apps.plugin` cannot be instructed by netdata for the actions it performs,
+we think it is pretty safe to allow it have these increased privileges.
+
+Keep in mind that `apps.plugin` will still run without escalated permissions,
+but it will not be able to collect all the information.
+
+## Application Badges
+
+You can create badges that you can embed anywhere you like, with URLs like this:
+
+```
+https://your.netdata.ip:19999/api/v1/badge.svg?chart=apps.processes&dimensions=myapp&value_color=green%3E0%7Cred
+```
+
+The color expression unescaped is this: `value_color=green>0|red`.
+
+Here is an example for the process group `sql` at `https://registry.my-netdata.io`:
+
+![image](https://registry.my-netdata.io/api/v1/badge.svg?chart=apps.processes&dimensions=sql&value_color=green%3E0%7Cred)
+
+Netdata is able give you a lot more badges for your app.
+Examples below for process group `sql`:
+
+- CPU usage: ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.cpu&dimensions=sql&value_color=green=0%7Corange%3C50%7Cred)
+- Disk Physical Reads ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.preads&dimensions=sql&value_color=green%3C100%7Corange%3C1000%7Cred)
+- Disk Physical Writes ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.pwrites&dimensions=sql&value_color=green%3C100%7Corange%3C1000%7Cred)
+- Disk Logical Reads ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.lreads&dimensions=sql&value_color=green%3C100%7Corange%3C1000%7Cred)
+- Disk Logical Writes ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.lwrites&dimensions=sql&value_color=green%3C100%7Corange%3C1000%7Cred)
+- Open Files ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.files&dimensions=sql&value_color=green%3E30%7Cred)
+- Real Memory ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.mem&dimensions=sql&value_color=green%3C100%7Corange%3C200%7Cred)
+- Virtual Memory ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.vmem&dimensions=sql&value_color=green%3C100%7Corange%3C1000%7Cred)
+- Swap Memory ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.swap&dimensions=sql&value_color=green=0%7Cred)
+- Minor Page Faults ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.minor_faults&dimensions=sql&value_color=green%3C100%7Corange%3C1000%7Cred)
+- Processes ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.processes&dimensions=sql&value_color=green%3E0%7Cred)
+- Threads ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.threads&dimensions=sql&value_color=green%3E=28%7Cred)
+- Major Faults (swap activity) ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.major_faults&dimensions=sql&value_color=green=0%7Cred)
+- Open Pipes ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.pipes&dimensions=sql&value_color=green=0%7Cred)
+- Open Sockets ![image](http://registry.my-netdata.io/api/v1/badge.svg?chart=apps.sockets&dimensions=sql&value_color=green%3E=3%7Cred)
+
+
+For more information about badges check [Generating Badges](../../web/api/badges)
+
+## Comparison with console tools
+
+Ssh to a server running netdata and execute this:
+
+```sh
+while true; do ls -l /var/run >/dev/null; done
+```
+
+In most systems `/var/run` is a `tmpfs` device, so there is nothing that can stop this command
+from consuming entirely one of the CPU cores of the machine.
+
+As we will see below, **none** of the console performance monitoring tools can report that this
+command is using 100% CPU. They do report of course that the CPU is busy, but **they fail to
+identify the process that consumes so much CPU**.
+
+Here is what common Linux console monitoring tools report:
+
+#### top
+
+`top` reports that `bash` is using just 14%.
+
+If you check the total system CPU utilization, it says there is no idle CPU at all, but `top`
+fails to provide a breakdown of the CPU consumption in the system. The sum of the CPU utilization
+of all processes reported by `top`, is 15.6%.
+
+```
+top - 18:46:28 up 3 days, 20:14,  2 users,  load average: 0.22, 0.05, 0.02
+Tasks:  76 total,   2 running,  74 sleeping,   0 stopped,   0 zombie
+%Cpu(s): 32.8 us, 65.6 sy,  0.0 ni,  0.0 id,  0.0 wa,  1.3 hi,  0.3 si,  0.0 st
+KiB Mem :  1016576 total,   244112 free,    52012 used,   720452 buff/cache
+KiB Swap:        0 total,        0 free,        0 used.   753712 avail Mem
+
+  PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND
+12789 root      20   0   14980   4180   3020 S 14.0  0.4   0:02.82 bash
+    9 root      20   0       0      0      0 S  1.0  0.0   0:22.36 rcuos/0
+  642 netdata   20   0  132024  20112   2660 S  0.3  2.0  14:26.29 netdata
+12522 netdata   20   0    9508   2476   1828 S  0.3  0.2   0:02.26 apps.plugin
+    1 root      20   0   67196  10216   7500 S  0.0  1.0   0:04.83 systemd
+    2 root      20   0       0      0      0 S  0.0  0.0   0:00.00 kthreadd
+```
+
+#### htop
+
+Exactly like `top`, `htop` is providing an incomplete breakdown of the system CPU utilization.
+
+```
+  CPU[||||||||||||||||||||||||100.0%]   Tasks: 27, 11 thr; 2 running
+  Mem[||||||||||||||||||||85.4M/993M]   Load average: 1.16 0.88 0.90 
+  Swp[                         0K/0K]   Uptime: 3 days, 21:37:03
+
+  PID USER      PRI  NI  VIRT   RES   SHR S CPU% MEM%   TIME+  Command
+12789 root       20   0 15104  4484  3208 S 14.0  0.4 10:57.15 -bash
+ 7024 netdata    20   0  9544  2480  1744 S  0.7  0.2  0:00.88 /usr/libexec/netd
+ 7009 netdata    20   0  138M 21016  2712 S  0.7  2.1  0:00.89 /usr/sbin/netdata
+ 7012 netdata    20   0  138M 21016  2712 S  0.0  2.1  0:00.31 /usr/sbin/netdata
+  563 root	     20   0  308M  202M  202M S  0.0 20.4  1:00.81 /usr/lib/systemd/
+ 7019 netdata    20   0  138M 21016  2712 S  0.0  2.1  0:00.14 /usr/sbin/netdata
+```
+
+#### atop
+
+`atop` also fails to break down CPU usage.
+
+```
+ATOP - localhost            2016/12/10  20:11:27    -----------      10s elapsed
+PRC | sys    1.13s | user   0.43s | #proc     75 | #zombie    0 | #exit   5383 |
+CPU | sys      67% | user     31% | irq       2% | idle      0% | wait      0% |
+CPL | avg1    1.34 | avg5    1.05 | avg15   0.96 | csw    51346 | intr   10508 |
+MEM | tot   992.8M | free  211.5M | cache 470.0M | buff   87.2M | slab  164.7M |
+SWP | tot     0.0M | free    0.0M |              | vmcom 207.6M | vmlim 496.4M |
+DSK |          vda | busy      0% | read       0 | write      4 | avio 1.50 ms |
+NET | transport    | tcpi      16 | tcpo      15 | udpi       0 | udpo       0 |
+NET | network      | ipi       16 | ipo       15 | ipfrw      0 | deliv     16 |
+NET | eth0    ---- | pcki      16 | pcko      15 | si    1 Kbps | so    4 Kbps |
+
+  PID SYSCPU USRCPU   VGROW  RGROW  RDDSK   WRDSK ST EXC  S  CPU CMD       1/600
+12789  0.98s  0.40s      0K     0K     0K    336K --   -  S  14% bash
+    9  0.08s  0.00s      0K     0K     0K      0K --   -  S   1% rcuos/0
+ 7024  0.03s  0.00s      0K     0K     0K      0K --   -  S   0% apps.plugin
+ 7009  0.01s  0.01s	     0K     0K     0K      4K --   -  S   0% netdata
+```
+
+#### glances
+
+And the same is true for `glances`. The system runs at 100%, but `glances` reports only 17%
+per process utilization.
+
+Note also, that being a `python` program, `glances` uses 1.6% CPU while it runs.
+
+
+```
+localhost                                               Uptime: 3 days, 21:42:00
+
+CPU  [100.0%]   CPU     100.0%   MEM     23.7%   SWAP      0.0%   LOAD    1-core
+MEM  [ 23.7%]   user:    30.9%   total:   993M   total:       0   1 min:    1.18
+SWAP [  0.0%]   system:  67.8%   used:    236M   used:        0   5 min:    1.08
+                idle:     0.0%   free:    757M   free:        0   15 min:   1.00
+
+NETWORK     Rx/s   Tx/s   TASKS  75 (90 thr), 1 run, 74 slp, 0 oth 
+eth0        168b    2Kb
+eth1          0b     0b     CPU%  MEM%   PID USER        NI S Command 
+lo            0b     0b     13.5   0.4 12789 root         0 S -bash 
+                             1.6   2.2  7025 root         0 R /usr/bin/python /u
+DISK I/O     R/s    W/s      1.0   0.0     9 root         0 S rcuos/0
+vda1           0     4K      0.3   0.2  7024 netdata      0 S /usr/libexec/netda
+                             0.3   0.0     7 root         0 S rcu_sched
+FILE SYS    Used  Total      0.3   2.1  7009 netdata      0 S /usr/sbin/netdata
+/ (vda1)   1.56G  29.5G      0.0   0.0    17 root         0 S oom_reaper
+```
+
+#### why this happens?
+
+All the console tools report usage based on the processes found running *at the moment they
+examine the process tree*. So, they see just one `ls` command, which is actually very quick
+with minor CPU utilization. But the shell, is spawning hundreds of them, one after another
+(much like shell scripts do).
+
+#### what netdata reports?
+
+The total CPU utilization of the system:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/21076212/9198e5a6-bf2e-11e6-9bc0-6bdea25befb2.png)
+<br/>_**Figure 1**: The system overview section at netdata, just a few seconds after the command was run_
+
+And at the applications `apps.plugin` breaks down CPU usage per application:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/21076220/c9687848-bf2e-11e6-8d81-348592c5aca2.png)
+<br/>_**Figure 2**: The Applications section at netdata, just a few seconds after the command was run_
+
+So, the `ssh` session is using 95% CPU time.
+
+Why `ssh`?
+
+`apps.plugin` groups all processes based on its configuration file
+[`/etc/netdata/apps_groups.conf`](apps_groups.conf)
+(to edit it on your system run `/etc/netdata/edit-config apps_groups.conf`).
+The default configuration has nothing for `bash`, but it has for `sshd`, so netdata accumulates
+all ssh sessions to a dimension on the charts, called `ssh`. This includes all the processes in
+the process tree of `sshd`, **including the exited children**.
+
+> Distributions based on `systemd`, provide another way to get cpu utilization per user session
+> or service running: control groups, or cgroups, commonly used as part of containers
+> `apps.plugin` does not use these mechanisms. The process grouping made by `apps.plugin` works
+> on any Linux, `systemd` based or not.
+
+#### a more technical description of how netdata works
+
+netdata reads `/proc/<pid>/stat` for all processes, once per second and extracts `utime` and
+`stime` (user and system cpu utilization), much like all the console tools do.
+
+But it [also extracts `cutime` and `cstime`](https://github.com/netdata/netdata/blob/62596cc6b906b1564657510ca9135c08f6d4cdda/src/apps_plugin.c#L636-L642)
+that account the user and system time of the exit children of each process. By keeping a map in
+memory of the whole process tree, it is capable of assigning the right time to every process,
+taking into account all its exited children.
+
+It is tricky, since a process may be running for 1 hour and once it exits, its parent should not
+receive the whole 1 hour of cpu time in just 1 second - you have to subtract the cpu time that has
+been reported for it prior to this iteration.
+
+It is even trickier, because walking through the entire process tree takes some time itself. So,
+if you sum the CPU utilization of all processes, you might have more CPU time than the reported
+total cpu time of the system. netdata solves this, by adapting the per process cpu utilization to
+the total of the system. [Netdata adds charts that document this normalization](https://london.my-netdata.io/default.html#menu_netdata_submenu_apps_plugin).
diff --git a/conf.d/apps_groups.conf b/collectors/apps.plugin/apps_groups.conf
index 4356e4910..c0d22fac9 100644
--- a/conf.d/apps_groups.conf
+++ b/collectors/apps.plugin/apps_groups.conf
@@ -107,15 +107,16 @@ timedb: prometheus *carbon-cache.py* *carbon-aggregator.py* *graphite/manage.py*
 # -----------------------------------------------------------------------------
 # email servers
 
-email: dovecot imapd pop3d amavis* master zmstat* zmmailboxdmgr qmgr oqmgr saslauthd opendkim clamd freshclam unbound tlsmgr postfwd2 postscreen postfix smtp* lmtp*
+email: dovecot imapd pop3d amavis* master zmstat* zmmailboxdmgr qmgr oqmgr saslauthd opendkim clamd freshclam unbound tlsmgr postfwd2 postscreen postfix smtp* lmtp* sendmail
 
 # -----------------------------------------------------------------------------
 # network, routing, VPN
 
 ppp: ppp*
 vpn: openvpn pptp* cjdroute gvpe tincd
-wifi: hostapd wpa_supplicant
+wifi: hostapd wpa_supplicant NetworkManager
 routing: ospfd* ospf6d* bgpd isisd ripd ripngd pimd ldpd zebra vtysh bird*
+modem: ModemManager
 
 # -----------------------------------------------------------------------------
 # high availability and balancers
@@ -162,7 +163,7 @@ VMs: vbox* VBox* qemu*
 # -----------------------------------------------------------------------------
 # ssh servers and clients
 
-ssh: ssh* scp
+ssh: ssh* scp dropbear
 
 # -----------------------------------------------------------------------------
 # print servers and clients
@@ -172,7 +173,7 @@ print: cups* lpd lpq
 # -----------------------------------------------------------------------------
 # time servers and clients
 
-time: ntp* systemd-timesyncd
+time: ntp* systemd-timesyncd chronyd
 
 # -----------------------------------------------------------------------------
 # dhcp servers and clients
@@ -257,13 +258,14 @@ airflow: *airflow*
 X: X Xorg xinit lightdm xdm pulseaudio gkrellm xfwm4 xfdesktop xfce* Thunar
 X: xfsettingsd xfconfd gnome-* gdm gconf* dconf* xfconf* *gvfs gvfs* kdm slim
 X: evolution-* firefox chromium opera vivaldi-bin epiphany WebKit*
+X: '*systemd --user*' chrome *chrome-sandbox* *google-chrome* *chromium* *firefox*
 
 # -----------------------------------------------------------------------------
 # Kernel / System
 
 ksmd: ksmd
 
-system: systemd* udisks* udevd* *udevd connmand ipv6_addrconf dbus-* rtkit*
+system: systemd-* udisks* udevd* *udevd connmand ipv6_addrconf dbus-* rtkit*
 system: inetd xinetd mdadm polkitd acpid uuidd packagekitd upowerd colord
 system: accounts-daemon rngd haveged
 
@@ -280,3 +282,5 @@ rabbitmq: *rabbitmq*
 sidekiq: *sidekiq*
 java: java
 ipfs: ipfs
+
+node: node
diff --git a/src/apps_plugin.c b/collectors/apps.plugin/apps_plugin.c
index 8595da6c2..f592e9fc8 100644
--- a/src/apps_plugin.c
+++ b/collectors/apps.plugin/apps_plugin.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 /*
  * netdata apps.plugin
@@ -5,7 +6,61 @@
  * Released under GPL v3+
  */
 
-#include "common.h"
+#include "../../libnetdata/libnetdata.h"
+
+// ----------------------------------------------------------------------------
+
+// callback required by fatal()
+void netdata_cleanup_and_exit(int ret) {
+    exit(ret);
+}
+
+// callbacks required by popen()
+void signals_block(void) {};
+void signals_unblock(void) {};
+void signals_reset(void) {};
+
+// callback required by eval()
+int health_variable_lookup(const char *variable, uint32_t hash, struct rrdcalc *rc, calculated_number *result) {
+    (void)variable;
+    (void)hash;
+    (void)rc;
+    (void)result;
+    return 0;
+};
+
+// required by get_system_cpus()
+char *netdata_configured_host_prefix = "";
+
+
+// ----------------------------------------------------------------------------
+// debugging
+
+static int debug_enabled = 0;
+static inline void debug_log_int(const char *fmt, ... ) {
+    va_list args;
+
+    fprintf( stderr, "apps.plugin: ");
+    va_start( args, fmt );
+    vfprintf( stderr, fmt, args );
+    va_end( args );
+
+    fputc('\n', stderr);
+}
+
+#ifdef NETDATA_INTERNAL_CHECKS
+
+#define debug_log(fmt, args...) do { if(unlikely(debug_enabled)) debug_log_int(fmt, ##args); } while(0)
+
+#else
+
+static inline void debug_log_dummy(void) {}
+#define debug_log(fmt, args...) debug_log_dummy()
+
+#endif
+
+
+// ----------------------------------------------------------------------------
 
 #ifdef __FreeBSD__
 #include <sys/user.h>
@@ -57,21 +112,21 @@
 // command line options
 
 static int
-        debug = 0,
         update_every = 1,
         enable_guest_charts = 0,
 #ifdef __FreeBSD__
         enable_file_charts = 0,
 #else
         enable_file_charts = 1,
+        max_fds_cache_seconds = 60,
 #endif
         enable_users_charts = 1,
         enable_groups_charts = 1,
         include_exited_childs = 1;
 
-
-// will be changed to getenv(NETDATA_CONFIG_DIR) if it exists
-static char *config_dir = CONFIG_DIR;
+// will be changed to getenv(NETDATA_USER_CONFIG_DIR) if it exists
+static char *user_config_dir = CONFIG_DIR;
+static char *stock_config_dir = LIBCONFIG_DIR;
 
 // ----------------------------------------------------------------------------
 // internal flags
@@ -90,6 +145,9 @@ static size_t
         global_iterations_counter = 1,
         calls_counter = 0,
         file_counter = 0,
+        filenames_allocated_counter = 0,
+        inodes_changed_counter = 0,
+        links_changed_counter = 0,
         targets_assignment_counter = 0;
 
 
@@ -193,7 +251,7 @@ struct target {
     unsigned int processes; // how many processes have been merged to this
     int exposed;            // if set, we have sent this to netdata
     int hidden;             // if set, we set the hidden flag on the dimension
-    int debug;
+    int debug_enabled;
     int ends_with;
     int starts_with;        // if set, the compare string matches only the
                             // beginning of the command
@@ -218,6 +276,18 @@ size_t
 // structure to store data for each process running
 // see: man proc for the description of the fields
 
+struct pid_fd {
+    int fd;
+
+#ifndef __FreeBSD__
+    ino_t inode;
+    char *filename;
+    uint32_t link_hash;
+    size_t cache_iterations_counter;
+    size_t cache_iterations_reset;
+#endif
+};
+
 struct pid_stat {
     int32_t pid;
     char comm[MAX_COMPARE_NAME + 1];
@@ -312,15 +382,15 @@ struct pid_stat {
     kernel_uint_t io_storage_bytes_written;
     // kernel_uint_t io_cancelled_write_bytes;
 
-    int *fds;                       // array of fds it uses
-    int fds_size;                   // the size of the fds array
+    struct pid_fd *fds;             // array of fds it uses
+    size_t fds_size;                   // the size of the fds array
 
     int children_count;             // number of processes directly referencing this
-    char keep:1;                    // 1 when we need to keep this process in memory even after it exited
+    unsigned char keep:1;           // 1 when we need to keep this process in memory even after it exited
     int keeploops;                  // increases by 1 every time keep is 1 and updated 0
-    char updated:1;                 // 1 when the process is currently running
-    char merged:1;                  // 1 when it has been merged to its parent
-    char read:1;                    // 1 when we have already read this process for this iteration
+    unsigned char updated:1;        // 1 when the process is currently running
+    unsigned char merged:1;         // 1 when it has been merged to its parent
+    unsigned char read:1;           // 1 when we have already read this process for this iteration
 
     int sortlist;                   // higher numbers = top on the process tree
                                     // each process gets a unique number
@@ -416,13 +486,6 @@ static int
         all_files_size = 0;
 
 // ----------------------------------------------------------------------------
-// callback required by fatal()
-
-void netdata_cleanup_and_exit(int ret) {
-    exit(ret);
-}
-
-// ----------------------------------------------------------------------------
 // apps_groups.conf
 // aggregate all processes in groups, to have a limited number of dimensions
 
@@ -452,8 +515,7 @@ static struct target *get_users_target(uid_t uid) {
     w->next = users_root_target;
     users_root_target = w;
 
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin: added uid %u ('%s') target\n", w->uid, w->name);
+    debug_log("added uid %u ('%s') target", w->uid, w->name);
 
     return w;
 }
@@ -485,8 +547,7 @@ struct target *get_groups_target(gid_t gid)
     w->next = groups_root_target;
     groups_root_target = w;
 
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin: added gid %u ('%s') target\n", w->gid, w->name);
+    debug_log("added gid %u ('%s') target", w->gid, w->name);
 
     return w;
 }
@@ -527,11 +588,11 @@ static struct target *get_apps_groups_target(const char *id, struct target *targ
                 break;
         }
 
-        if(unlikely(debug)) {
+        if(unlikely(debug_enabled)) {
             if(unlikely(target))
-                fprintf(stderr, "apps.plugin: REUSING TARGET NAME '%s' on ID '%s'\n", target->name, target->id);
+                debug_log("REUSING TARGET NAME '%s' on ID '%s'", target->name, target->id);
             else
-                fprintf(stderr, "apps.plugin: NEW TARGET NAME '%s' on ID '%s'\n", name, id);
+                debug_log("NEW TARGET NAME '%s' on ID '%s'", name, id);
         }
     }
 
@@ -564,34 +625,37 @@ static struct target *get_apps_groups_target(const char *id, struct target *targ
     w->comparelen = strlen(w->compare);
 
     w->hidden = thidden;
-    w->debug = tdebug;
+#ifdef NETDATA_INTERNAL_CHECKS
+    w->debug_enabled = tdebug;
+#else
+    if(tdebug)
+        fprintf(stderr, "apps.plugin has been compiled without debugging\n");
+#endif
     w->target = target;
 
     // append it, to maintain the order in apps_groups.conf
     if(last) last->next = w;
     else apps_groups_root_target = w;
 
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin: ADDING TARGET ID '%s', process name '%s' (%s), aggregated on target '%s', options: %s %s\n"
-                , w->id
-                , w->compare, (w->starts_with && w->ends_with)?"substring":((w->starts_with)?"prefix":((w->ends_with)?"suffix":"exact"))
-                , w->target?w->target->name:w->name
-                , (w->hidden)?"hidden":"-"
-                , (w->debug)?"debug":"-"
-        );
+    debug_log("ADDING TARGET ID '%s', process name '%s' (%s), aggregated on target '%s', options: %s %s"
+            , w->id
+            , w->compare, (w->starts_with && w->ends_with)?"substring":((w->starts_with)?"prefix":((w->ends_with)?"suffix":"exact"))
+            , w->target?w->target->name:w->name
+            , (w->hidden)?"hidden":"-"
+            , (w->debug_enabled)?"debug":"-"
+    );
 
     return w;
 }
 
 // read the apps_groups.conf file
-static int read_apps_groups_conf(const char *file)
+static int read_apps_groups_conf(const char *path, const char *file)
 {
     char filename[FILENAME_MAX + 1];
 
-    snprintfz(filename, FILENAME_MAX, "%s/apps_%s.conf", config_dir, file);
+    snprintfz(filename, FILENAME_MAX, "%s/apps_%s.conf", path, file);
 
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin: process groups file: '%s'\n", filename);
+    debug_log("process groups file: '%s'", filename);
 
     // ----------------------------------------
 
@@ -654,14 +718,16 @@ static int read_apps_groups_conf(const char *file)
 
 // ----------------------------------------------------------------------------
 // struct pid_stat management
+static inline void init_pid_fds(struct pid_stat *p, size_t first, size_t size);
 
 static inline struct pid_stat *get_pid_entry(pid_t pid) {
     if(unlikely(all_pids[pid]))
         return all_pids[pid];
 
     struct pid_stat *p = callocz(sizeof(struct pid_stat), 1);
-    p->fds = callocz(sizeof(int), MAX_SPARE_FDS);
+    p->fds = mallocz(sizeof(struct pid_fd) * MAX_SPARE_FDS);
     p->fds_size = MAX_SPARE_FDS;
+    init_pid_fds(p, 0, p->fds_size);
 
     if(likely(root_of_pids))
         root_of_pids->prev = p;
@@ -685,8 +751,7 @@ static inline void del_pid_entry(pid_t pid) {
         return;
     }
 
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin: process %d %s exited, deleting it.\n", pid, p->comm);
+    debug_log("process %d %s exited, deleting it.", pid, p->comm);
 
     if(root_of_pids == p)
         root_of_pids = p->next;
@@ -694,7 +759,17 @@ static inline void del_pid_entry(pid_t pid) {
     if(p->next) p->next->prev = p->prev;
     if(p->prev) p->prev->next = p->next;
 
+    // free the filename
+#ifndef __FreeBSD__
+    {
+        size_t i;
+        for(i = 0; i < p->fds_size; i++)
+            if(p->fds[i].filename)
+                freez(p->fds[i].filename);
+    }
+#endif
     freez(p->fds);
+
     freez(p->fds_dirname);
     freez(p->stat_filename);
     freez(p->status_filename);
@@ -716,8 +791,8 @@ static inline int managed_log(struct pid_stat *p, uint32_t log, int status) {
     if(unlikely(!status)) {
         // error("command failed log %u, errno %d", log, errno);
 
-        if(unlikely(debug || errno != ENOENT)) {
-            if(unlikely(debug || !(p->log_thrown & log))) {
+        if(unlikely(debug_enabled || errno != ENOENT)) {
+            if(unlikely(debug_enabled || !(p->log_thrown & log))) {
                 p->log_thrown |= log;
                 switch(log) {
                     case PID_LOG_IO:
@@ -779,7 +854,7 @@ static inline void assign_target_to_pid(struct pid_stat *p) {
 
     struct target *w;
     for(w = apps_groups_root_target; w ; w = w->next) {
-        // if(debug || (p->target && p->target->debug)) fprintf(stderr, "apps.plugin: \t\tcomparing '%s' with '%s'\n", w->compare, p->comm);
+        // if(debug_enabled || (p->target && p->target->debug_enabled)) debug_log_int("\t\tcomparing '%s' with '%s'", w->compare, p->comm);
 
         // find it - 4 cases:
         // 1. the target is not a pattern
@@ -796,8 +871,8 @@ static inline void assign_target_to_pid(struct pid_stat *p) {
             if(w->target) p->target = w->target;
             else p->target = w;
 
-            if(debug || (p->target && p->target->debug))
-                fprintf(stderr, "apps.plugin: \t\t%s linked to target %s\n", p->comm, p->target->name);
+            if(debug_enabled || (p->target && p->target->debug_enabled))
+                debug_log_int("%s linked to target %s", p->comm, p->target->name);
 
             break;
         }
@@ -828,7 +903,7 @@ static inline int read_proc_pid_cmdline(struct pid_stat *p) {
         p->cmdline_filename = strdupz(filename);
     }
 
-    int fd = open(p->cmdline_filename, O_RDONLY, 0666);
+    int fd = open(p->cmdline_filename, procfile_open_flags, 0666);
     if(unlikely(fd == -1)) goto cleanup;
 
     ssize_t i, bytes = read(fd, cmdline, MAX_CMDLINE);
@@ -838,18 +913,20 @@ static inline int read_proc_pid_cmdline(struct pid_stat *p) {
 #endif
 
     cmdline[bytes] = '\0';
-    for(i = 0; i < bytes ; i++)
+    for(i = 0; i < bytes ; i++) {
         if(unlikely(!cmdline[i])) cmdline[i] = ' ';
+    }
 
+    if(p->cmdline) freez(p->cmdline);
     p->cmdline = strdupz(cmdline);
 
-    if(unlikely(debug))
-        fprintf(stderr, "Read file '%s' contents: %s\n", p->cmdline_filename, p->cmdline);
+    debug_log("Read file '%s' contents: %s", p->cmdline_filename, p->cmdline);
 
     return 1;
 
 cleanup:
     // copy the command to the command line
+    if(p->cmdline) freez(p->cmdline);
     p->cmdline = strdupz(p->comm);
     return 0;
 }
@@ -963,7 +1040,7 @@ static inline int read_proc_pid_status(struct pid_stat *p, void *ptr) {
     p->gid                  = proc_info->ki_groups[0];
     p->status_vmsize        = proc_info->ki_size / 1024; // in kB
     p->status_vmrss         = proc_info->ki_rssize * pagesize / 1024; // in kB
-    // FIXME: what about shared and swap memory on FreeBSD?
+    // TODO: what about shared and swap memory on FreeBSD?
     return 1;
 #else
     (void)ptr;
@@ -1004,7 +1081,7 @@ static inline int read_proc_pid_status(struct pid_stat *p, void *ptr) {
     arl_begin(p->status_arl);
 
     for(l = 0; l < lines ;l++) {
-        // fprintf(stderr, "CHECK: line %zu of %zu, key '%s' = '%s'\n", l, lines, procfile_lineword(ff, l, 0), procfile_lineword(ff, l, 1));
+        // debug_log("CHECK: line %zu of %zu, key '%s' = '%s'", l, lines, procfile_lineword(ff, l, 0), procfile_lineword(ff, l, 1));
         arl_ptr.line = l;
         if(unlikely(arl_check(p->status_arl,
                 procfile_lineword(ff, l, 0),
@@ -1013,7 +1090,7 @@ static inline int read_proc_pid_status(struct pid_stat *p, void *ptr) {
 
     p->status_vmshared = p->status_rssfile + p->status_rssshmem;
 
-    // fprintf(stderr, "%s uid %d, gid %d, VmSize %zu, VmRSS %zu, RssFile %zu, RssShmem %zu, shared %zu\n", p->comm, (int)p->uid, (int)p->gid, p->status_vmsize, p->status_vmrss, p->status_rssfile, p->status_rssshmem, p->status_vmshared);
+    // debug_log("%s uid %d, gid %d, VmSize %zu, VmRSS %zu, RssFile %zu, RssShmem %zu, shared %zu", p->comm, (int)p->uid, (int)p->gid, p->status_vmsize, p->status_vmrss, p->status_rssfile, p->status_rssshmem, p->status_vmshared);
 
     return 1;
 #endif
@@ -1072,11 +1149,11 @@ static inline int read_proc_pid_stat(struct pid_stat *p, void *ptr) {
 #endif
 
     if(strcmp(p->comm, comm) != 0) {
-        if(unlikely(debug)) {
+        if(unlikely(debug_enabled)) {
             if(p->comm[0])
-                fprintf(stderr, "apps.plugin: \tpid %d (%s) changed name to '%s'\n", p->pid, p->comm, comm);
+                debug_log("\tpid %d (%s) changed name to '%s'", p->pid, p->comm, comm);
             else
-                fprintf(stderr, "apps.plugin: \tJust added %d (%s)\n", p->pid, comm);
+                debug_log("\tJust added %d (%s)", p->pid, comm);
         }
 
         strncpyz(p->comm, comm, MAX_COMPARE_NAME);
@@ -1152,8 +1229,8 @@ static inline int read_proc_pid_stat(struct pid_stat *p, void *ptr) {
     }
 #endif
 
-    if(unlikely(debug || (p->target && p->target->debug)))
-        fprintf(stderr, "apps.plugin: READ PROC/PID/STAT: %s/proc/%d/stat, process: '%s' on target '%s' (dt=%llu) VALUES: utime=" KERNEL_UINT_FORMAT ", stime=" KERNEL_UINT_FORMAT ", cutime=" KERNEL_UINT_FORMAT ", cstime=" KERNEL_UINT_FORMAT ", minflt=" KERNEL_UINT_FORMAT ", majflt=" KERNEL_UINT_FORMAT ", cminflt=" KERNEL_UINT_FORMAT ", cmajflt=" KERNEL_UINT_FORMAT ", threads=%d\n", netdata_configured_host_prefix, p->pid, p->comm, (p->target)?p->target->name:"UNSET", p->stat_collected_usec - p->last_stat_collected_usec, p->utime, p->stime, p->cutime, p->cstime, p->minflt, p->majflt, p->cminflt, p->cmajflt, p->num_threads);
+    if(unlikely(debug_enabled || (p->target && p->target->debug_enabled)))
+        debug_log_int("READ PROC/PID/STAT: %s/proc/%d/stat, process: '%s' on target '%s' (dt=%llu) VALUES: utime=" KERNEL_UINT_FORMAT ", stime=" KERNEL_UINT_FORMAT ", cutime=" KERNEL_UINT_FORMAT ", cstime=" KERNEL_UINT_FORMAT ", minflt=" KERNEL_UINT_FORMAT ", majflt=" KERNEL_UINT_FORMAT ", cminflt=" KERNEL_UINT_FORMAT ", cmajflt=" KERNEL_UINT_FORMAT ", threads=%d", netdata_configured_host_prefix, p->pid, p->comm, (p->target)?p->target->name:"UNSET", p->stat_collected_usec - p->last_stat_collected_usec, p->utime, p->stime, p->cutime, p->cstime, p->minflt, p->majflt, p->cminflt, p->cmajflt, p->num_threads);
 
     if(unlikely(global_iterations_counter == 1)) {
         p->minflt           = 0;
@@ -1332,7 +1409,7 @@ int file_descriptor_compare(void* a, void* b) {
         return strcmp(((struct file_descriptor *)a)->name, ((struct file_descriptor *)b)->name);
 }
 
-int file_descriptor_iterator(avl *a) { if(a) {}; return 0; }
+// int file_descriptor_iterator(avl *a) { if(a) {}; return 0; }
 
 avl_tree all_files_index = {
         NULL,
@@ -1368,15 +1445,13 @@ static inline void file_descriptor_not_used(int id)
         }
 #endif /* NETDATA_INTERNAL_CHECKS */
 
-        if(unlikely(debug))
-            fprintf(stderr, "apps.plugin: decreasing slot %d (count = %d).\n", id, all_files[id].count);
+        debug_log("decreasing slot %d (count = %d).", id, all_files[id].count);
 
         if(all_files[id].count > 0) {
             all_files[id].count--;
 
             if(!all_files[id].count) {
-                if(unlikely(debug))
-                    fprintf(stderr, "apps.plugin:   >> slot %d is empty.\n", id);
+                debug_log("  >> slot %d is empty.", id);
 
                 if(unlikely(file_descriptor_remove(&all_files[id]) != (void *)&all_files[id]))
                     error("INTERNAL ERROR: removal of unused fd from index, removed a different fd");
@@ -1398,8 +1473,7 @@ static inline void all_files_grow() {
     int i;
 
     // there is no empty slot
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin: extending fd array to %d entries\n", all_files_size + FILE_DESCRIPTORS_INCREASE_STEP);
+    debug_log("extending fd array to %d entries", all_files_size + FILE_DESCRIPTORS_INCREASE_STEP);
 
     all_files = reallocz(all_files, (all_files_size + FILE_DESCRIPTORS_INCREASE_STEP) * sizeof(struct file_descriptor));
 
@@ -1407,8 +1481,7 @@ static inline void all_files_grow() {
     // since all pointers are now invalid
 
     if(unlikely(old && old != (void *)all_files)) {
-        if(unlikely(debug))
-            fprintf(stderr, "apps.plugin:   >> re-indexing.\n");
+        debug_log("  >> re-indexing.");
 
         all_files_index.root = NULL;
         for(i = 0; i < all_files_size; i++) {
@@ -1417,8 +1490,7 @@ static inline void all_files_grow() {
                 error("INTERNAL ERROR: duplicate indexing of fd during realloc.");
         }
 
-        if(unlikely(debug))
-            fprintf(stderr, "apps.plugin:   >> re-indexing done.\n");
+        debug_log("  >> re-indexing done.");
     }
 
     // initialize the newly added entries
@@ -1441,8 +1513,7 @@ static inline int file_descriptor_set_on_empty_slot(const char *name, uint32_t h
     if(!all_files || all_files_len == all_files_size)
         all_files_grow();
 
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin:   >> searching for empty slot.\n");
+    debug_log("  >> searching for empty slot.");
 
     // search for an empty slot
 
@@ -1453,16 +1524,14 @@ static inline int file_descriptor_set_on_empty_slot(const char *name, uint32_t h
         if(c == 0) continue;
 
         if(!all_files[c].count) {
-            if(unlikely(debug))
-                fprintf(stderr, "apps.plugin:   >> Examining slot %d.\n", c);
+            debug_log("  >> Examining slot %d.", c);
 
 #ifdef NETDATA_INTERNAL_CHECKS
             if(all_files[c].magic == 0x0BADCAFE && all_files[c].name && file_descriptor_find(all_files[c].name, all_files[c].hash))
-                error("fd on position %d is not cleared properly. It still has %s in it.\n", c, all_files[c].name);
+                error("fd on position %d is not cleared properly. It still has %s in it.", c, all_files[c].name);
 #endif /* NETDATA_INTERNAL_CHECKS */
 
-            if(unlikely(debug))
-                fprintf(stderr, "apps.plugin:   >> %s fd position %d for %s (last name: %s)\n", all_files[c].name?"re-using":"using", c, name, all_files[c].name);
+            debug_log("  >> %s fd position %d for %s (last name: %s)", all_files[c].name?"re-using":"using", c, name, all_files[c].name);
 
             freez((void *)all_files[c].name);
             all_files[c].name = NULL;
@@ -1479,8 +1548,7 @@ static inline int file_descriptor_set_on_empty_slot(const char *name, uint32_t h
     }
     // else we have an empty slot in 'c'
 
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin:   >> updating slot %d.\n", c);
+    debug_log("  >> updating slot %d.", c);
 
     all_files[c].name = strdupz(name);
     all_files[c].hash = hash;
@@ -1493,24 +1561,21 @@ static inline int file_descriptor_set_on_empty_slot(const char *name, uint32_t h
     if(unlikely(file_descriptor_add(&all_files[c]) != (void *)&all_files[c]))
         error("INTERNAL ERROR: duplicate indexing of fd.");
 
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin: using fd position %d (name: %s)\n", c, all_files[c].name);
+    debug_log("using fd position %d (name: %s)", c, all_files[c].name);
 
     return c;
 }
 
-static inline int file_descriptor_find_or_add(const char *name)
-{
-    uint32_t hash = simple_hash(name);
+static inline int file_descriptor_find_or_add(const char *name, uint32_t hash) {
+    if(unlikely(!hash))
+        hash = simple_hash(name);
 
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin: adding or finding name '%s' with hash %u\n", name, hash);
+    debug_log("adding or finding name '%s' with hash %u", name, hash);
 
     struct file_descriptor *fd = file_descriptor_find(name, hash);
     if(fd) {
         // found
-        if(unlikely(debug))
-            fprintf(stderr, "apps.plugin:   >> found on slot %d\n", fd->pos);
+        debug_log("  >> found on slot %d", fd->pos);
 
         fd->count++;
         return fd->pos;
@@ -1530,47 +1595,65 @@ static inline int file_descriptor_find_or_add(const char *name)
         else if(strcmp(t, "[timerfd]") == 0) type = FILETYPE_TIMERFD;
         else if(strcmp(t, "[signalfd]") == 0) type = FILETYPE_SIGNALFD;
         else {
-            if(unlikely(debug))
-                fprintf(stderr, "apps.plugin: FIXME: unknown anonymous inode: %s\n", name);
-
+            debug_log("UNKNOWN anonymous inode: %s", name);
             type = FILETYPE_OTHER;
         }
     }
     else if(likely(strcmp(name, "inotify") == 0)) type = FILETYPE_INOTIFY;
     else {
-        if(unlikely(debug))
-            fprintf(stderr, "apps.plugin: FIXME: cannot understand linkname: %s\n", name);
-
+        debug_log("UNKNOWN linkname: %s", name);
         type = FILETYPE_OTHER;
     }
 
     return file_descriptor_set_on_empty_slot(name, hash, type);
 }
 
+static inline void clear_pid_fd(struct pid_fd *pfd) {
+    pfd->fd = 0;
+
+    #ifndef __FreeBSD__
+    pfd->link_hash = 0;
+    pfd->inode = 0;
+    pfd->cache_iterations_counter = 0;
+    pfd->cache_iterations_reset = 0;
+#endif
+}
+
 static inline void make_all_pid_fds_negative(struct pid_stat *p) {
-    int *fd = p->fds, *end = &p->fds[p->fds_size];
-    while(fd < end) {
-        *fd = -(*fd);
-        fd++;
+    struct pid_fd *pfd = p->fds, *pfdend = &p->fds[p->fds_size];
+    while(pfd < pfdend) {
+        pfd->fd = -(pfd->fd);
+        pfd++;
     }
 }
 
 static inline void cleanup_negative_pid_fds(struct pid_stat *p) {
-    int *fd = p->fds, *fdend = &p->fds[p->fds_size];
+    struct pid_fd *pfd = p->fds, *pfdend = &p->fds[p->fds_size];
+
+    while(pfd < pfdend) {
+        int fd = pfd->fd;
 
-    while(fd < fdend) {
-        if(unlikely(*fd < 0)) {
-            file_descriptor_not_used(-(*fd));
-            *fd++ = 0;
+        if(unlikely(fd < 0)) {
+            file_descriptor_not_used(-(fd));
+            clear_pid_fd(pfd);
         }
-        else
-            fd++;
+
+        pfd++;
     }
 }
 
-static inline void zero_pid_fds(struct pid_stat *p, int first, int size) {
-    int *fd = &p->fds[first], *end = &p->fds[first + size];
-    while(fd < end) *fd++ = 0;
+static inline void init_pid_fds(struct pid_stat *p, size_t first, size_t size) {
+    struct pid_fd *pfd = &p->fds[first], *pfdend = &p->fds[first + size];
+    size_t i = first;
+
+    while(pfd < pfdend) {
+#ifndef __FreeBSD__
+        pfd->filename = NULL;
+#endif
+        clear_pid_fd(pfd);
+        pfd++;
+        i++;
+    }
 }
 
 static inline int read_pid_file_descriptors(struct pid_stat *p, void *ptr) {
@@ -1625,17 +1708,16 @@ static inline int read_pid_file_descriptors(struct pid_stat *p, void *ptr) {
         if (unlikely(fdid >= p->fds_size)) {
             // it is small, extend it
 
-            if (unlikely(debug))
-                fprintf(stderr, "apps.plugin: extending fd memory slots for %s from %d to %d\n", p->comm, p->fds_size, fdid + MAX_SPARE_FDS);
+            debug_log("extending fd memory slots for %s from %d to %d", p->comm, p->fds_size, fdid + MAX_SPARE_FDS);
 
-            p->fds = reallocz(p->fds, (fdid + MAX_SPARE_FDS) * sizeof(int));
+            p->fds = reallocz(p->fds, (fdid + MAX_SPARE_FDS) * sizeof(struct pid_fd));
 
             // and initialize it
-            zero_pid_fds(p, p->fds_size, (fdid + MAX_SPARE_FDS) - p->fds_size);
+            init_pid_fds(p, p->fds_size, (fdid + MAX_SPARE_FDS) - p->fds_size);
             p->fds_size = fdid + MAX_SPARE_FDS;
         }
 
-        if (unlikely(p->fds[fdid] == 0)) {
+        if (unlikely(p->fds[fdid].fd == 0)) {
             // we don't know this fd, get it
 
             switch (fds->kf_type) {
@@ -1691,15 +1773,14 @@ static inline int read_pid_file_descriptors(struct pid_stat *p, void *ptr) {
 
             // if another process already has this, we will get
             // the same id
-            p->fds[fdid] = file_descriptor_find_or_add(fdsname);
+            p->fds[fdid].fd = file_descriptor_find_or_add(fdsname, 0);
         }
 
             // else make it positive again, we need it
-            // of course, the actual file may have changed, but we don't care so much
-            // FIXME: we could compare the inode as returned by readdir dirent structure
+            // of course, the actual file may have changed
 
         else
-            p->fds[fdid] = -p->fds[fdid];
+            p->fds[fdid].fd = -p->fds[fdid].fd;
 
         bfdsbuf += fds->kf_structsize;
     }
@@ -1714,7 +1795,6 @@ static inline int read_pid_file_descriptors(struct pid_stat *p, void *ptr) {
     if(unlikely(!fds)) return 0;
 
     struct dirent *de;
-    char fdname[FILENAME_MAX + 1];
     char linkname[FILENAME_MAX + 1];
 
     // we make all pid fds negative, so that
@@ -1733,53 +1813,103 @@ static inline int read_pid_file_descriptors(struct pid_stat *p, void *ptr) {
         if(unlikely(fdid < 0)) continue;
 
         // check if the fds array is small
-        if(unlikely(fdid >= p->fds_size)) {
+        if(unlikely((size_t)fdid >= p->fds_size)) {
             // it is small, extend it
 
-            if(unlikely(debug))
-                fprintf(stderr
-                        , "apps.plugin: extending fd memory slots for %s from %d to %d\n"
-                        , p->comm
-                        , p->fds_size
-                        , fdid + MAX_SPARE_FDS
-                );
+            debug_log("extending fd memory slots for %s from %d to %d"
+                    , p->comm
+                    , p->fds_size
+                    , fdid + MAX_SPARE_FDS
+            );
 
-            p->fds = reallocz(p->fds, (fdid + MAX_SPARE_FDS) * sizeof(int));
+            p->fds = reallocz(p->fds, (fdid + MAX_SPARE_FDS) * sizeof(struct pid_fd));
 
             // and initialize it
-            zero_pid_fds(p, p->fds_size, (fdid + MAX_SPARE_FDS) - p->fds_size);
-            p->fds_size = fdid + MAX_SPARE_FDS;
+            init_pid_fds(p, p->fds_size, (fdid + MAX_SPARE_FDS) - p->fds_size);
+            p->fds_size = (size_t)fdid + MAX_SPARE_FDS;
         }
 
-        if(unlikely(p->fds[fdid] == 0)) {
-            // we don't know this fd, get it
+        if(unlikely(p->fds[fdid].fd < 0 && de->d_ino != p->fds[fdid].inode)) {
+            // inodes do not match, clear the previous entry
+            inodes_changed_counter++;
+            file_descriptor_not_used(-p->fds[fdid].fd);
+            clear_pid_fd(&p->fds[fdid]);
+        }
 
-            sprintf(fdname, "%s/proc/%d/fd/%s", netdata_configured_host_prefix, p->pid, de->d_name);
-            ssize_t l = readlink(fdname, linkname, FILENAME_MAX);
-            if(unlikely(l == -1)) {
-                if(debug || (p->target && p->target->debug)) {
-                    if(debug || (p->target && p->target->debug))
-                        error("Cannot read link %s", fdname);
-                }
-                continue;
+        if(p->fds[fdid].fd < 0 && p->fds[fdid].cache_iterations_counter > 0) {
+            p->fds[fdid].fd = -p->fds[fdid].fd;
+            p->fds[fdid].cache_iterations_counter--;
+            continue;
+        }
+
+        if(unlikely(!p->fds[fdid].filename)) {
+            filenames_allocated_counter++;
+            char fdname[FILENAME_MAX + 1];
+            snprintfz(fdname, FILENAME_MAX, "%s/proc/%d/fd/%s", netdata_configured_host_prefix, p->pid, de->d_name);
+            p->fds[fdid].filename = strdupz(fdname);
+        }
+
+        file_counter++;
+        ssize_t l = readlink(p->fds[fdid].filename, linkname, FILENAME_MAX);
+        if(unlikely(l == -1)) {
+            // cannot read the link
+
+            if(debug_enabled || (p->target && p->target->debug_enabled))
+                error("Cannot read link %s", p->fds[fdid].filename);
+
+            if(unlikely(p->fds[fdid].fd < 0)) {
+                file_descriptor_not_used(-p->fds[fdid].fd);
+                clear_pid_fd(&p->fds[fdid]);
             }
-            else
-                linkname[l] = '\0';
 
-            file_counter++;
+            continue;
+        }
+        else
+            linkname[l] = '\0';
+
+        uint32_t link_hash = simple_hash(linkname);
+
+        if(unlikely(p->fds[fdid].fd < 0 && p->fds[fdid].link_hash != link_hash)) {
+            // the link changed
+            links_changed_counter++;
+            file_descriptor_not_used(-p->fds[fdid].fd);
+            clear_pid_fd(&p->fds[fdid]);
+        }
+
+        if(unlikely(p->fds[fdid].fd == 0)) {
+            // we don't know this fd, get it
 
             // if another process already has this, we will get
             // the same id
-            p->fds[fdid] = file_descriptor_find_or_add(linkname);
+            p->fds[fdid].fd = file_descriptor_find_or_add(linkname, link_hash);
+            p->fds[fdid].inode = de->d_ino;
+            p->fds[fdid].link_hash = link_hash;
         }
-
+        else {
             // else make it positive again, we need it
-            // of course, the actual file may have changed, but we don't care so much
-            // FIXME: we could compare the inode as returned by readdir dirent structure
-            // UPDATE: no we cannot use inodes - under /proc inodes don't change when the link is changed
+            p->fds[fdid].fd = -p->fds[fdid].fd;
+        }
 
-        else
-            p->fds[fdid] = -p->fds[fdid];
+        // caching control
+        // without this we read all the files on every iteration
+        if(max_fds_cache_seconds > 0) {
+            size_t spread = ((size_t)max_fds_cache_seconds > 10) ? 10 : (size_t)max_fds_cache_seconds;
+
+            // cache it for a few iterations
+            size_t max = ((size_t) max_fds_cache_seconds + (fdid % spread)) / (size_t) update_every;
+            p->fds[fdid].cache_iterations_reset++;
+
+            if(unlikely(p->fds[fdid].cache_iterations_reset % spread == (size_t) fdid % spread))
+                p->fds[fdid].cache_iterations_reset++;
+
+            if(unlikely((fdid <= 2 && p->fds[fdid].cache_iterations_reset > 5) ||
+                        p->fds[fdid].cache_iterations_reset > max)) {
+                // for stdin, stdout, stderr (fdid <= 2) we have checked a few times, or if it goes above the max, goto max
+                p->fds[fdid].cache_iterations_reset = max;
+            }
+
+            p->fds[fdid].cache_iterations_counter = p->fds[fdid].cache_iterations_reset;
+        }
     }
 
     closedir(fds);
@@ -1791,12 +1921,12 @@ static inline int read_pid_file_descriptors(struct pid_stat *p, void *ptr) {
 
 // ----------------------------------------------------------------------------
 
-static inline int print_process_and_parents(struct pid_stat *p, usec_t time) {
+static inline int debug_print_process_and_parents(struct pid_stat *p, usec_t time) {
     char *prefix = "\\_ ";
     int indent = 0;
 
     if(p->parent)
-        indent = print_process_and_parents(p->parent, p->stat_collected_usec);
+        indent = debug_print_process_and_parents(p->parent, p->stat_collected_usec);
     else
         prefix = " > ";
 
@@ -1830,12 +1960,12 @@ static inline int print_process_and_parents(struct pid_stat *p, usec_t time) {
     return indent + 1;
 }
 
-static inline void print_process_tree(struct pid_stat *p, char *msg) {
-    fprintf(stderr, "%s: process %s (%d, %s) with parents:\n", msg, p->comm, p->pid, p->updated?"running":"exited");
-    print_process_and_parents(p, p->stat_collected_usec);
+static inline void debug_print_process_tree(struct pid_stat *p, char *msg) {
+    debug_log("%s: process %s (%d, %s) with parents:", msg, p->comm, p->pid, p->updated?"running":"exited");
+    debug_print_process_and_parents(p, p->stat_collected_usec);
 }
 
-static inline void find_lost_child_debug(struct pid_stat *pe, kernel_uint_t lost, int type) {
+static inline void debug_find_lost_child(struct pid_stat *pe, kernel_uint_t lost, int type) {
     int found = 0;
     struct pid_stat *p = NULL;
 
@@ -1938,8 +2068,8 @@ static inline void process_exited_processes() {
         if(utime + stime + gtime + minflt + majflt == 0)
             continue;
 
-        if(unlikely(debug)) {
-            fprintf(stderr, "Absorb %s (%d %s total resources: utime=" KERNEL_UINT_FORMAT " stime=" KERNEL_UINT_FORMAT " gtime=" KERNEL_UINT_FORMAT " minflt=" KERNEL_UINT_FORMAT " majflt=" KERNEL_UINT_FORMAT ")\n"
+        if(unlikely(debug_enabled)) {
+            debug_log("Absorb %s (%d %s total resources: utime=" KERNEL_UINT_FORMAT " stime=" KERNEL_UINT_FORMAT " gtime=" KERNEL_UINT_FORMAT " minflt=" KERNEL_UINT_FORMAT " majflt=" KERNEL_UINT_FORMAT ")"
                 , p->comm
                 , p->pid
                 , p->updated?"running":"exited"
@@ -1949,7 +2079,7 @@ static inline void process_exited_processes() {
                 , minflt
                 , majflt
                 );
-            print_process_tree(p, "Searching parents");
+            debug_print_process_tree(p, "Searching parents");
         }
 
         struct pid_stat *pp;
@@ -1958,59 +2088,57 @@ static inline void process_exited_processes() {
 
             kernel_uint_t absorbed;
             absorbed = remove_exited_child_from_parent(&utime,  &pp->cutime);
-            if(unlikely(debug && absorbed))
-                fprintf(stderr, " > process %s (%d %s) absorbed " KERNEL_UINT_FORMAT " utime (remaining: " KERNEL_UINT_FORMAT ")\n", pp->comm, pp->pid, pp->updated?"running":"exited", absorbed, utime);
+            if(unlikely(debug_enabled && absorbed))
+                debug_log(" > process %s (%d %s) absorbed " KERNEL_UINT_FORMAT " utime (remaining: " KERNEL_UINT_FORMAT ")", pp->comm, pp->pid, pp->updated?"running":"exited", absorbed, utime);
 
             absorbed = remove_exited_child_from_parent(&stime,  &pp->cstime);
-            if(unlikely(debug && absorbed))
-                fprintf(stderr, " > process %s (%d %s) absorbed " KERNEL_UINT_FORMAT " stime (remaining: " KERNEL_UINT_FORMAT ")\n", pp->comm, pp->pid, pp->updated?"running":"exited", absorbed, stime);
+            if(unlikely(debug_enabled && absorbed))
+                debug_log(" > process %s (%d %s) absorbed " KERNEL_UINT_FORMAT " stime (remaining: " KERNEL_UINT_FORMAT ")", pp->comm, pp->pid, pp->updated?"running":"exited", absorbed, stime);
 
             absorbed = remove_exited_child_from_parent(&gtime,  &pp->cgtime);
-            if(unlikely(debug && absorbed))
-                fprintf(stderr, " > process %s (%d %s) absorbed " KERNEL_UINT_FORMAT " gtime (remaining: " KERNEL_UINT_FORMAT ")\n", pp->comm, pp->pid, pp->updated?"running":"exited", absorbed, gtime);
+            if(unlikely(debug_enabled && absorbed))
+                debug_log(" > process %s (%d %s) absorbed " KERNEL_UINT_FORMAT " gtime (remaining: " KERNEL_UINT_FORMAT ")", pp->comm, pp->pid, pp->updated?"running":"exited", absorbed, gtime);
 
             absorbed = remove_exited_child_from_parent(&minflt, &pp->cminflt);
-            if(unlikely(debug && absorbed))
-                fprintf(stderr, " > process %s (%d %s) absorbed " KERNEL_UINT_FORMAT " minflt (remaining: " KERNEL_UINT_FORMAT ")\n", pp->comm, pp->pid, pp->updated?"running":"exited", absorbed, minflt);
+            if(unlikely(debug_enabled && absorbed))
+                debug_log(" > process %s (%d %s) absorbed " KERNEL_UINT_FORMAT " minflt (remaining: " KERNEL_UINT_FORMAT ")", pp->comm, pp->pid, pp->updated?"running":"exited", absorbed, minflt);
 
             absorbed = remove_exited_child_from_parent(&majflt, &pp->cmajflt);
-            if(unlikely(debug && absorbed))
-                fprintf(stderr, " > process %s (%d %s) absorbed " KERNEL_UINT_FORMAT " majflt (remaining: " KERNEL_UINT_FORMAT ")\n", pp->comm, pp->pid, pp->updated?"running":"exited", absorbed, majflt);
+            if(unlikely(debug_enabled && absorbed))
+                debug_log(" > process %s (%d %s) absorbed " KERNEL_UINT_FORMAT " majflt (remaining: " KERNEL_UINT_FORMAT ")", pp->comm, pp->pid, pp->updated?"running":"exited", absorbed, majflt);
         }
 
         if(unlikely(utime + stime + gtime + minflt + majflt > 0)) {
-            if(unlikely(debug)) {
-                if(utime)  find_lost_child_debug(p, utime,  3);
-                if(stime)  find_lost_child_debug(p, stime,  4);
-                if(gtime)  find_lost_child_debug(p, gtime,  5);
-                if(minflt) find_lost_child_debug(p, minflt, 1);
-                if(majflt) find_lost_child_debug(p, majflt, 2);
+            if(unlikely(debug_enabled)) {
+                if(utime) debug_find_lost_child(p, utime, 3);
+                if(stime) debug_find_lost_child(p, stime, 4);
+                if(gtime) debug_find_lost_child(p, gtime, 5);
+                if(minflt) debug_find_lost_child(p, minflt, 1);
+                if(majflt) debug_find_lost_child(p, majflt, 2);
             }
 
             p->keep = 1;
 
-            if(unlikely(debug))
-                fprintf(stderr, " > remaining resources - KEEP - for another loop: %s (%d %s total resources: utime=" KERNEL_UINT_FORMAT " stime=" KERNEL_UINT_FORMAT " gtime=" KERNEL_UINT_FORMAT " minflt=" KERNEL_UINT_FORMAT " majflt=" KERNEL_UINT_FORMAT ")\n"
-                    , p->comm
-                    , p->pid
-                    , p->updated?"running":"exited"
-                    , utime
-                    , stime
-                    , gtime
-                    , minflt
-                    , majflt
-                    );
+            debug_log(" > remaining resources - KEEP - for another loop: %s (%d %s total resources: utime=" KERNEL_UINT_FORMAT " stime=" KERNEL_UINT_FORMAT " gtime=" KERNEL_UINT_FORMAT " minflt=" KERNEL_UINT_FORMAT " majflt=" KERNEL_UINT_FORMAT ")"
+                , p->comm
+                , p->pid
+                , p->updated?"running":"exited"
+                , utime
+                , stime
+                , gtime
+                , minflt
+                , majflt
+            );
 
             for(pp = p->parent; pp ; pp = pp->parent) {
                 if(pp->updated) break;
                 pp->keep = 1;
 
-                if(unlikely(debug))
-                    fprintf(stderr, " > - KEEP - parent for another loop: %s (%d %s)\n"
-                        , pp->comm
-                        , pp->pid
-                        , pp->updated?"running":"exited"
-                        );
+                debug_log(" > - KEEP - parent for another loop: %s (%d %s)"
+                    , pp->comm
+                    , pp->pid
+                    , pp->updated?"running":"exited"
+                );
             }
 
             p->utime_raw   = utime  * (p->stat_collected_usec - p->last_stat_collected_usec) / (USEC_PER_SEC * RATES_DETAIL);
@@ -2020,16 +2148,14 @@ static inline void process_exited_processes() {
             p->majflt_raw  = majflt * (p->stat_collected_usec - p->last_stat_collected_usec) / (USEC_PER_SEC * RATES_DETAIL);
             p->cutime_raw = p->cstime_raw = p->cgtime_raw = p->cminflt_raw = p->cmajflt_raw = 0;
 
-            if(unlikely(debug))
-                fprintf(stderr, "\n");
+            debug_log(" ");
         }
-        else if(unlikely(debug)) {
-            fprintf(stderr, " > totally absorbed - DONE - %s (%d %s)\n"
+        else
+            debug_log(" > totally absorbed - DONE - %s (%d %s)"
                 , p->comm
                 , p->pid
                 , p->updated?"running":"exited"
-                );
-        }
+            );
     }
 }
 
@@ -2054,8 +2180,8 @@ static inline void link_all_processes_to_their_parents(void) {
             p->parent = pp;
             pp->children_count++;
 
-            if(unlikely(debug || (p->target && p->target->debug)))
-                fprintf(stderr, "apps.plugin: \tchild %d (%s, %s) on target '%s' has parent %d (%s, %s). Parent: utime=" KERNEL_UINT_FORMAT ", stime=" KERNEL_UINT_FORMAT ", gtime=" KERNEL_UINT_FORMAT ", minflt=" KERNEL_UINT_FORMAT ", majflt=" KERNEL_UINT_FORMAT ", cutime=" KERNEL_UINT_FORMAT ", cstime=" KERNEL_UINT_FORMAT ", cgtime=" KERNEL_UINT_FORMAT ", cminflt=" KERNEL_UINT_FORMAT ", cmajflt=" KERNEL_UINT_FORMAT "\n", p->pid, p->comm, p->updated?"running":"exited", (p->target)?p->target->name:"UNSET", pp->pid, pp->comm, pp->updated?"running":"exited", pp->utime, pp->stime, pp->gtime, pp->minflt, pp->majflt, pp->cutime, pp->cstime, pp->cgtime, pp->cminflt, pp->cmajflt);
+            if(unlikely(debug_enabled || (p->target && p->target->debug_enabled)))
+                debug_log_int("child %d (%s, %s) on target '%s' has parent %d (%s, %s). Parent: utime=" KERNEL_UINT_FORMAT ", stime=" KERNEL_UINT_FORMAT ", gtime=" KERNEL_UINT_FORMAT ", minflt=" KERNEL_UINT_FORMAT ", majflt=" KERNEL_UINT_FORMAT ", cutime=" KERNEL_UINT_FORMAT ", cstime=" KERNEL_UINT_FORMAT ", cgtime=" KERNEL_UINT_FORMAT ", cminflt=" KERNEL_UINT_FORMAT ", cmajflt=" KERNEL_UINT_FORMAT "", p->pid, p->comm, p->updated?"running":"exited", (p->target)?p->target->name:"UNSET", pp->pid, pp->comm, pp->updated?"running":"exited", pp->utime, pp->stime, pp->gtime, pp->minflt, pp->majflt, pp->cutime, pp->cstime, pp->cgtime, pp->cminflt, pp->cmajflt);
         }
         else {
             p->parent = NULL;
@@ -2105,7 +2231,7 @@ static inline int collect_data_for_pid(pid_t pid, void *ptr) {
     if(unlikely(!p || p->read)) return 0;
     p->read = 1;
 
-    // fprintf(stderr, "Reading process %d (%s), sortlist %d\n", p->pid, p->comm, p->sortlist);
+    // debug_log("Reading process %d (%s), sortlist %d", p->pid, p->comm, p->sortlist);
 
     // --------------------------------------------------------------------
     // /proc/<pid>/stat
@@ -2141,8 +2267,8 @@ static inline int collect_data_for_pid(pid_t pid, void *ptr) {
     // --------------------------------------------------------------------
     // done!
 
-    if(unlikely(debug && include_exited_childs && all_pids_count && p->ppid && all_pids[p->ppid] && !all_pids[p->ppid]->read))
-        fprintf(stderr, "Read process %d (%s) sortlisted %d, but its parent %d (%s) sortlisted %d, is not read\n", p->pid, p->comm, p->sortlist, all_pids[p->ppid]->pid, all_pids[p->ppid]->comm, all_pids[p->ppid]->sortlist);
+    if(unlikely(debug_enabled && include_exited_childs && all_pids_count && p->ppid && all_pids[p->ppid] && !all_pids[p->ppid]->read))
+        debug_log("Read process %d (%s) sortlisted %d, but its parent %d (%s) sortlisted %d, is not read", p->pid, p->comm, p->sortlist, all_pids[p->ppid]->pid, all_pids[p->ppid]->comm, all_pids[p->ppid]->sortlist);
 
     // mark it as updated
     p->updated = 1;
@@ -2302,18 +2428,18 @@ static int collect_data_for_all_processes(void) {
 // check: update_apps_groups_statistics()
 
 static void cleanup_exited_pids(void) {
-    int c;
+    size_t c;
     struct pid_stat *p = NULL;
 
     for(p = root_of_pids; p ;) {
         if(!p->updated && (!p->keep || p->keeploops > 0)) {
-            if(unlikely(debug && (p->keep || p->keeploops)))
-                fprintf(stderr, " > CLEANUP cannot keep exited process %d (%s) anymore - removing it.\n", p->pid, p->comm);
+            if(unlikely(debug_enabled && (p->keep || p->keeploops)))
+                debug_log(" > CLEANUP cannot keep exited process %d (%s) anymore - removing it.", p->pid, p->comm);
 
             for(c = 0; c < p->fds_size; c++)
-                if(p->fds[c] > 0) {
-                    file_descriptor_not_used(p->fds[c]);
-                    p->fds[c] = 0;
+                if(p->fds[c].fd > 0) {
+                    file_descriptor_not_used(p->fds[c].fd);
+                    clear_pid_fd(&p->fds[c]);
                 }
 
             pid_t r = p->pid;
@@ -2335,7 +2461,7 @@ static void apply_apps_groups_targets_inheritance(void) {
     // inherit their target from their parent
     int found = 1, loops = 0;
     while(found) {
-        if(unlikely(debug)) loops++;
+        if(unlikely(debug_enabled)) loops++;
         found = 0;
         for(p = root_of_pids; p ; p = p->next) {
             // if this process does not have a target
@@ -2346,8 +2472,8 @@ static void apply_apps_groups_targets_inheritance(void) {
                 p->target = p->parent->target;
                 found++;
 
-                if(debug || (p->target && p->target->debug))
-                    fprintf(stderr, "apps.plugin: \t\tTARGET INHERITANCE: %s is inherited by %d (%s) from its parent %d (%s).\n", p->target->name, p->pid, p->comm, p->parent->pid, p->parent->comm);
+                if(debug_enabled || (p->target && p->target->debug_enabled))
+                    debug_log_int("TARGET INHERITANCE: %s is inherited by %d (%s) from its parent %d (%s).", p->target->name, p->pid, p->comm, p->parent->pid, p->parent->comm);
             }
         }
     }
@@ -2357,7 +2483,7 @@ static void apply_apps_groups_targets_inheritance(void) {
     int sortlist = 1;
     found = 1;
     while(found) {
-        if(unlikely(debug)) loops++;
+        if(unlikely(debug_enabled)) loops++;
         found = 0;
 
         for(p = root_of_pids; p ; p = p->next) {
@@ -2382,16 +2508,15 @@ static void apply_apps_groups_targets_inheritance(void) {
                 if(unlikely(p->target && !p->parent->target)) {
                     p->parent->target = p->target;
 
-                    if(debug || (p->target && p->target->debug))
-                        fprintf(stderr, "apps.plugin: \t\tTARGET INHERITANCE: %s is inherited by %d (%s) from its child %d (%s).\n", p->target->name, p->parent->pid, p->parent->comm, p->pid, p->comm);
+                    if(debug_enabled || (p->target && p->target->debug_enabled))
+                        debug_log_int("TARGET INHERITANCE: %s is inherited by %d (%s) from its child %d (%s).", p->target->name, p->parent->pid, p->parent->comm, p->pid, p->comm);
                 }
 
                 found++;
             }
         }
 
-        if(unlikely(debug))
-            fprintf(stderr, "apps.plugin: TARGET INHERITANCE: merged %d processes\n", found);
+        debug_log("TARGET INHERITANCE: merged %d processes", found);
     }
 
     // init goes always to default target
@@ -2403,7 +2528,7 @@ static void apply_apps_groups_targets_inheritance(void) {
         all_pids[0]->target = apps_groups_default_target;
 
     // give a default target on all top level processes
-    if(unlikely(debug)) loops++;
+    if(unlikely(debug_enabled)) loops++;
     for(p = root_of_pids; p ; p = p->next) {
         // if the process is not merged itself
         // then is is a top level process
@@ -2421,21 +2546,20 @@ static void apply_apps_groups_targets_inheritance(void) {
     // give a target to all merged child processes
     found = 1;
     while(found) {
-        if(unlikely(debug)) loops++;
+        if(unlikely(debug_enabled)) loops++;
         found = 0;
         for(p = root_of_pids; p ; p = p->next) {
             if(unlikely(!p->target && p->merged && p->parent && p->parent->target)) {
                 p->target = p->parent->target;
                 found++;
 
-                if(debug || (p->target && p->target->debug))
-                    fprintf(stderr, "apps.plugin: \t\tTARGET INHERITANCE: %s is inherited by %d (%s) from its parent %d (%s) at phase 2.\n", p->target->name, p->pid, p->comm, p->parent->pid, p->parent->comm);
+                if(debug_enabled || (p->target && p->target->debug_enabled))
+                    debug_log_int("TARGET INHERITANCE: %s is inherited by %d (%s) from its parent %d (%s) at phase 2.", p->target->name, p->pid, p->comm, p->parent->pid, p->parent->comm);
             }
         }
     }
 
-    if(unlikely(debug))
-        fprintf(stderr, "apps.plugin: apply_apps_groups_targets_inheritance() made %d loops on the process tree\n", loops);
+    debug_log("apply_apps_groups_targets_inheritance() made %d loops on the process tree", loops);
 }
 
 static size_t zero_all_targets(struct target *root) {
@@ -2570,9 +2694,10 @@ static inline void aggregate_pid_fds_on_targets(struct pid_stat *p) {
     reallocate_target_fds(u);
     reallocate_target_fds(g);
 
-    int c, size = p->fds_size, *fds = p->fds;
+    size_t c, size = p->fds_size;
+    struct pid_fd *fds = p->fds;
     for(c = 0; c < size ;c++) {
-        int fd = fds[c];
+        int fd = fds[c].fd;
 
         if(likely(fd <= 0 || fd >= all_files_size))
             continue;
@@ -2628,8 +2753,8 @@ static inline void aggregate_pid_on_target(struct target *w, struct pid_stat *p,
     w->processes++;
     w->num_threads += p->num_threads;
 
-    if(unlikely(debug || w->debug))
-        fprintf(stderr, "apps.plugin: \taggregating '%s' pid %d on target '%s' utime=" KERNEL_UINT_FORMAT ", stime=" KERNEL_UINT_FORMAT ", gtime=" KERNEL_UINT_FORMAT ", cutime=" KERNEL_UINT_FORMAT ", cstime=" KERNEL_UINT_FORMAT ", cgtime=" KERNEL_UINT_FORMAT ", minflt=" KERNEL_UINT_FORMAT ", majflt=" KERNEL_UINT_FORMAT ", cminflt=" KERNEL_UINT_FORMAT ", cmajflt=" KERNEL_UINT_FORMAT "\n", p->comm, p->pid, w->name, p->utime, p->stime, p->gtime, p->cutime, p->cstime, p->cgtime, p->minflt, p->majflt, p->cminflt, p->cmajflt);
+    if(unlikely(debug_enabled || w->debug_enabled))
+        debug_log_int("aggregating '%s' pid %d on target '%s' utime=" KERNEL_UINT_FORMAT ", stime=" KERNEL_UINT_FORMAT ", gtime=" KERNEL_UINT_FORMAT ", cutime=" KERNEL_UINT_FORMAT ", cstime=" KERNEL_UINT_FORMAT ", cgtime=" KERNEL_UINT_FORMAT ", minflt=" KERNEL_UINT_FORMAT ", majflt=" KERNEL_UINT_FORMAT ", cminflt=" KERNEL_UINT_FORMAT ", cmajflt=" KERNEL_UINT_FORMAT "", p->comm, p->pid, w->name, p->utime, p->stime, p->gtime, p->cutime, p->cstime, p->cgtime, p->minflt, p->majflt, p->cminflt, p->cmajflt);
 }
 
 static void calculate_netdata_statistics(void) {
@@ -2660,8 +2785,8 @@ static void calculate_netdata_statistics(void) {
         if(likely(p->user_target && p->user_target->uid == p->uid))
             w = p->user_target;
         else {
-            if(unlikely(debug && p->user_target))
-                    fprintf(stderr, "apps.plugin: \t\tpid %d (%s) switched user from %u (%s) to %u.\n", p->pid, p->comm, p->user_target->uid, p->user_target->name, p->uid);
+            if(unlikely(debug_enabled && p->user_target))
+                debug_log("pid %d (%s) switched user from %u (%s) to %u.", p->pid, p->comm, p->user_target->uid, p->user_target->name, p->uid);
 
             w = p->user_target = get_users_target(p->uid);
         }
@@ -2676,8 +2801,8 @@ static void calculate_netdata_statistics(void) {
         if(likely(p->group_target && p->group_target->gid == p->gid))
             w = p->group_target;
         else {
-            if(unlikely(debug && p->group_target))
-                    fprintf(stderr, "apps.plugin: \t\tpid %d (%s) switched group from %u (%s) to %u.\n", p->pid, p->comm, p->group_target->gid, p->group_target->name, p->gid);
+            if(unlikely(debug_enabled && p->group_target))
+                debug_log("pid %d (%s) switched group from %u (%s) to %u.", p->pid, p->comm, p->group_target->gid, p->group_target->name, p->gid);
 
             w = p->group_target = get_groups_target(p->gid);
         }
@@ -2698,8 +2823,6 @@ static void calculate_netdata_statistics(void) {
 // ----------------------------------------------------------------------------
 // update chart dimensions
 
-int print_calculated_number(char *str, calculated_number value) { (void)str; (void)value; return 0; }
-
 static inline void send_BEGIN(const char *type, const char *id, usec_t usec) {
     fprintf(stdout, "BEGIN %s.%s %llu\n", type, id, usec);
 }
@@ -2751,6 +2874,9 @@ void send_resource_usage_to_netdata(usec_t dt) {
                 "CHART netdata.apps_sizes '' 'Apps Plugin Files' 'files/s' apps.plugin netdata.apps_sizes line 140001 %1$d\n"
                 "DIMENSION calls '' incremental 1 1\n"
                 "DIMENSION files '' incremental 1 1\n"
+                "DIMENSION filenames '' incremental 1 1\n"
+                "DIMENSION inode_changes '' incremental 1 1\n"
+                "DIMENSION link_changes '' incremental 1 1\n"
                 "DIMENSION pids '' absolute 1 1\n"
                 "DIMENSION fds '' absolute 1 1\n"
                 "DIMENSION targets '' absolute 1 1\n"
@@ -2793,6 +2919,9 @@ void send_resource_usage_to_netdata(usec_t dt) {
         "BEGIN netdata.apps_sizes %llu\n"
         "SET calls = %zu\n"
         "SET files = %zu\n"
+        "SET filenames = %zu\n"
+        "SET inode_changes = %zu\n"
+        "SET link_changes = %zu\n"
         "SET pids = %zu\n"
         "SET fds = %d\n"
         "SET targets = %zu\n"
@@ -2804,6 +2933,9 @@ void send_resource_usage_to_netdata(usec_t dt) {
         , dt
         , calls_counter
         , file_counter
+        , filenames_allocated_counter
+        , inodes_changed_counter
+        , links_changed_counter
         , all_pids_count
         , all_files_len
         , apps_groups_targets_count
@@ -2854,7 +2986,7 @@ static void normalize_utilization(struct target *root) {
     // here we try to eliminate them by disabling childs processing either for specific dimensions
     // or entirely. Of course, either way, we disable it just a single iteration.
 
-    kernel_uint_t max_time = processors * hz * RATES_DETAIL;
+    kernel_uint_t max_time = processors * system_hz * RATES_DETAIL;
     kernel_uint_t utime = 0, cutime = 0, stime = 0, cstime = 0, gtime = 0, cgtime = 0, minflt = 0, cminflt = 0, majflt = 0, cmajflt = 0;
 
     if(global_utime > max_time) global_utime = max_time;
@@ -2932,7 +3064,7 @@ static void normalize_utilization(struct target *root) {
     // if(gtime_fix_ratio  < 0.0) gtime_fix_ratio  = 0.0;
     // if(cgtime_fix_ratio < 0.0) cgtime_fix_ratio = 0.0;
 
-    // FIXME
+    // TODO
     // we use cpu time to normalize page faults
     // the problem is that to find the proper max values
     // for page faults we have to parse /proc/vmstat
@@ -2957,14 +3089,12 @@ static void normalize_utilization(struct target *root) {
 
     // the report
 
-    if(unlikely(debug)) {
-        fprintf(stderr,
+    debug_log(
             "SYSTEM: u=" KERNEL_UINT_FORMAT " s=" KERNEL_UINT_FORMAT " g=" KERNEL_UINT_FORMAT " "
             "COLLECTED: u=" KERNEL_UINT_FORMAT " s=" KERNEL_UINT_FORMAT " g=" KERNEL_UINT_FORMAT " cu=" KERNEL_UINT_FORMAT " cs=" KERNEL_UINT_FORMAT " cg=" KERNEL_UINT_FORMAT " "
             "DELTA: u=" KERNEL_UINT_FORMAT " s=" KERNEL_UINT_FORMAT " g=" KERNEL_UINT_FORMAT " "
             "FIX: u=%0.2f s=%0.2f g=%0.2f cu=%0.2f cs=%0.2f cg=%0.2f "
             "FINALLY: u=" KERNEL_UINT_FORMAT " s=" KERNEL_UINT_FORMAT " g=" KERNEL_UINT_FORMAT " cu=" KERNEL_UINT_FORMAT " cs=" KERNEL_UINT_FORMAT " cg=" KERNEL_UINT_FORMAT " "
-            "\n"
             , global_utime
             , global_stime
             , global_gtime
@@ -2989,8 +3119,7 @@ static void normalize_utilization(struct target *root) {
             , (kernel_uint_t)(cutime * cutime_fix_ratio)
             , (kernel_uint_t)(cstime * cstime_fix_ratio)
             , (kernel_uint_t)(cgtime * cgtime_fix_ratio)
-            );
-    }
+    );
 }
 #else // ALL_PIDS_ARE_READ_INSTANTLY == 1
 static void normalize_utilization(struct target *root) {
@@ -3151,7 +3280,8 @@ static void send_charts_updates_to_netdata(struct target *root, const char *type
         if (!w->exposed && w->processes) {
             newly_added++;
             w->exposed = 1;
-            if (debug || w->debug) fprintf(stderr, "apps.plugin: %s just added - regenerating charts.\n", w->name);
+            if (debug_enabled || w->debug_enabled)
+                debug_log_int("%s just added - regenerating charts.", w->name);
         }
     }
 
@@ -3163,7 +3293,7 @@ static void send_charts_updates_to_netdata(struct target *root, const char *type
     fprintf(stdout, "CHART %s.cpu '' '%s CPU Time (%d%% = %d core%s)' 'cpu time %%' cpu %s.cpu stacked 20001 %d\n", type, title, (processors * 100), processors, (processors>1)?"s":"", type, update_every);
     for (w = root; w ; w = w->next) {
         if(unlikely(w->exposed))
-            fprintf(stdout, "DIMENSION %s '' absolute 1 %llu %s\n", w->name, hz * RATES_DETAIL / 100, w->hidden ? "hidden" : "");
+            fprintf(stdout, "DIMENSION %s '' absolute 1 %llu %s\n", w->name, system_hz * RATES_DETAIL / 100, w->hidden ? "hidden" : "");
     }
 
     fprintf(stdout, "CHART %s.mem '' '%s Real Memory (w/o shared)' 'MB' mem %s.mem stacked 20003 %d\n", type, title, type, update_every);
@@ -3193,20 +3323,20 @@ static void send_charts_updates_to_netdata(struct target *root, const char *type
     fprintf(stdout, "CHART %s.cpu_user '' '%s CPU User Time (%d%% = %d core%s)' 'cpu time %%' cpu %s.cpu_user stacked 20020 %d\n", type, title, (processors * 100), processors, (processors>1)?"s":"", type, update_every);
     for (w = root; w ; w = w->next) {
         if(unlikely(w->exposed))
-            fprintf(stdout, "DIMENSION %s '' absolute 1 %llu\n", w->name, hz * RATES_DETAIL / 100LLU);
+            fprintf(stdout, "DIMENSION %s '' absolute 1 %llu\n", w->name, system_hz * RATES_DETAIL / 100LLU);
     }
 
     fprintf(stdout, "CHART %s.cpu_system '' '%s CPU System Time (%d%% = %d core%s)' 'cpu time %%' cpu %s.cpu_system stacked 20021 %d\n", type, title, (processors * 100), processors, (processors>1)?"s":"", type, update_every);
     for (w = root; w ; w = w->next) {
         if(unlikely(w->exposed))
-            fprintf(stdout, "DIMENSION %s '' absolute 1 %llu\n", w->name, hz * RATES_DETAIL / 100LLU);
+            fprintf(stdout, "DIMENSION %s '' absolute 1 %llu\n", w->name, system_hz * RATES_DETAIL / 100LLU);
     }
 
     if(show_guest_time) {
         fprintf(stdout, "CHART %s.cpu_guest '' '%s CPU Guest Time (%d%% = %d core%s)' 'cpu time %%' cpu %s.cpu_system stacked 20022 %d\n", type, title, (processors * 100), processors, (processors > 1) ? "s" : "", type, update_every);
         for (w = root; w; w = w->next) {
             if(unlikely(w->exposed))
-                fprintf(stdout, "DIMENSION %s '' absolute 1 %llu\n", w->name, hz * RATES_DETAIL / 100LLU);
+                fprintf(stdout, "DIMENSION %s '' absolute 1 %llu\n", w->name, system_hz * RATES_DETAIL / 100LLU);
         }
     }
 
@@ -3315,7 +3445,6 @@ cleanup:
 static void parse_args(int argc, char **argv)
 {
     int i, freq = 0;
-    char *name = NULL;
 
     for(i = 1; i < argc; i++) {
         if(!freq) {
@@ -3341,10 +3470,26 @@ static void parse_args(int argc, char **argv)
         }
 
         if(strcmp("debug", argv[i]) == 0) {
-            debug = 1;
-            // debug_flags = 0xffffffff;
+#ifdef NETDATA_INTERNAL_CHECKS
+            debug_enabled = 1;
+#else
+            fprintf(stderr, "apps.plugin has been compiled without debugging\n");
+#endif
+            continue;
+        }
+
+#ifndef __FreeBSD__
+        if(strcmp("fds-cache-secs", argv[i]) == 0) {
+            if(argc <= i + 1) {
+                fprintf(stderr, "Parameter 'fds-cache-secs' requires a number as argument.\n");
+                exit(1);
+            }
+            i++;
+            max_fds_cache_seconds = str2i(argv[i]);
+            if(max_fds_cache_seconds < 0) max_fds_cache_seconds = 0;
             continue;
         }
+#endif
 
         if(strcmp("no-childs", argv[i]) == 0 || strcmp("without-childs", argv[i]) == 0) {
             include_exited_childs = 0;
@@ -3415,44 +3560,54 @@ static void parse_args(int argc, char **argv)
                     " without-files     enable / disable reporting files, sockets, pipes\n"
                     "                   (default is enabled)\n"
                     "\n"
-                    " NAME              read apps_NAME.conf instead of\n"
-                    "                   apps_groups.conf\n"
-                    "                   (default NAME=groups)\n"
+#ifndef __FreeBSD__
+                    " fds-cache-secs N  cache the files of processed for N seconds\n"
+                    "                   caching is adaptive per file (when a file\n"
+                    "                   is found, it starts at 0 and while the file\n"
+                    "                   remains open, it is incremented up to the\n"
+                    "                   max given)\n"
+                    "                   (default is %d seconds)\n"
                     "\n"
+#endif
                     " version or -v or -V print program version and exit\n"
                     "\n"
                     , VERSION
+#ifndef __FreeBSD__
+                    , max_fds_cache_seconds
+#endif
             );
             exit(1);
         }
 
-        if(!name) {
-            name = argv[i];
-            continue;
-        }
-
         error("Cannot understand option %s", argv[i]);
         exit(1);
     }
 
     if(freq > 0) update_every = freq;
-    if(!name) name = "groups";
 
-    if(read_apps_groups_conf(name)) {
-        error("Cannot read process groups '%s/apps_%s.conf'. There are no internal defaults. Failing.", config_dir, name);
-        exit(1);
+    if(read_apps_groups_conf(user_config_dir, "groups")) {
+        info("Cannot read process groups configuration file '%s/apps_groups.conf'. Will try '%s/apps_groups.conf'", user_config_dir, stock_config_dir);
+
+        if(read_apps_groups_conf(stock_config_dir, "groups")) {
+            error("Cannot read process groups '%s/apps_groups.conf'. There are no internal defaults. Failing.", stock_config_dir);
+            exit(1);
+        }
+        else
+            info("Loaded config file '%s/apps_groups.conf'", stock_config_dir);
     }
+    else
+        info("Loaded config file '%s/apps_groups.conf'", user_config_dir);
 }
 
 static int am_i_running_as_root() {
     uid_t uid = getuid(), euid = geteuid();
 
     if(uid == 0 || euid == 0) {
-        if(debug) info("I am running with escalated privileges, uid = %u, euid = %u.", uid, euid);
+        if(debug_enabled) info("I am running with escalated privileges, uid = %u, euid = %u.", uid, euid);
         return 1;
     }
 
-    if(debug) info("I am not running with escalated privileges, uid = %u, euid = %u.", uid, euid);
+    if(debug_enabled) info("I am not running with escalated privileges, uid = %u, euid = %u.", uid, euid);
     return 0;
 }
 
@@ -3463,7 +3618,7 @@ static int check_capabilities() {
         error("Cannot get current capabilities.");
         return 0;
     }
-    else if(debug)
+    else if(debug_enabled)
         info("Received my capabilities from the system.");
 
     int ret = 1;
@@ -3478,7 +3633,7 @@ static int check_capabilities() {
             error("apps.plugin should run with CAP_DAC_READ_SEARCH.");
             ret = 0;
         }
-        else if(debug)
+        else if(debug_enabled)
             info("apps.plugin runs with CAP_DAC_READ_SEARCH.");
     }
 
@@ -3492,7 +3647,7 @@ static int check_capabilities() {
             error("apps.plugin should run with CAP_SYS_PTRACE.");
             ret = 0;
         }
-        else if(debug)
+        else if(debug_enabled)
             info("apps.plugin runs with CAP_SYS_PTRACE.");
     }
 
@@ -3521,19 +3676,25 @@ int main(int argc, char **argv) {
     error_log_errors_per_period = 100;
     error_log_throttle_period = 3600;
 
+    // since apps.plugin runs as root, prevent it from opening symbolic links
+    procfile_open_flags = O_RDONLY|O_NOFOLLOW;
+
     netdata_configured_host_prefix = getenv("NETDATA_HOST_PREFIX");
-    if(netdata_configured_host_prefix == NULL) {
-        // info("NETDATA_HOST_PREFIX is not passed from netdata");
-        netdata_configured_host_prefix = "";
+    if(verify_netdata_host_prefix() == -1) exit(1);
+
+    user_config_dir = getenv("NETDATA_USER_CONFIG_DIR");
+    if(user_config_dir == NULL) {
+        // info("NETDATA_CONFIG_DIR is not passed from netdata");
+        user_config_dir = CONFIG_DIR;
     }
-    // else info("Found NETDATA_HOST_PREFIX='%s'", netdata_configured_host_prefix);
+    // else info("Found NETDATA_USER_CONFIG_DIR='%s'", user_config_dir);
 
-    config_dir = getenv("NETDATA_CONFIG_DIR");
-    if(config_dir == NULL) {
+    stock_config_dir = getenv("NETDATA_STOCK_CONFIG_DIR");
+    if(stock_config_dir == NULL) {
         // info("NETDATA_CONFIG_DIR is not passed from netdata");
-        config_dir = CONFIG_DIR;
+        stock_config_dir = LIBCONFIG_DIR;
     }
-    // else info("Found NETDATA_CONFIG_DIR='%s'", config_dir);
+    // else info("Found NETDATA_USER_CONFIG_DIR='%s'", user_config_dir);
 
 #ifdef NETDATA_INTERNAL_CHECKS
     if(debug_flags != 0) {
@@ -3561,14 +3722,14 @@ int main(int argc, char **argv) {
         error("apps.plugin should either run as root (now running with uid %u, euid %u) or have special capabilities. "
                       "Without these, apps.plugin cannot report disk I/O utilization of other processes. "
                       "To enable capabilities run: sudo setcap cap_dac_read_search,cap_sys_ptrace+ep %s; "
-                      "To enable setuid to root run: sudo chown root %s; sudo chmod 4755 %s; "
+                      "To enable setuid to root run: sudo chown root:netdata %s; sudo chmod 4750 %s; "
               , uid, euid, argv[0], argv[0], argv[0]
         );
 #else
         error("apps.plugin should either run as root (now running with uid %u, euid %u) or have special capabilities. "
                       "Without these, apps.plugin cannot report disk I/O utilization of other processes. "
                       "Your system does not support capabilities. "
-                      "To enable setuid to root run: sudo chown root %s; sudo chmod 4755 %s; "
+                      "To enable setuid to root run: sudo chown root:netdata %s; sudo chmod 4750 %s; "
               , uid, euid, argv[0], argv[0]
         );
 #endif
@@ -3630,8 +3791,7 @@ int main(int argc, char **argv) {
 
         show_guest_time_old = show_guest_time;
 
-        if(unlikely(debug))
-            fprintf(stderr, "apps.plugin: done Loop No %zu\n", global_iterations_counter);
+        debug_log("done Loop No %zu", global_iterations_counter);
 
         // restart check (14400 seconds)
         if(now_monotonic_sec() - started_t > 14400) exit(0);
diff --git a/collectors/cgroups.plugin/Makefile.am b/collectors/cgroups.plugin/Makefile.am
new file mode 100644
index 000000000..eb3214ab2
--- /dev/null
+++ b/collectors/cgroups.plugin/Makefile.am
@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+CLEANFILES = \
+	cgroup-name.sh \
+	$(NULL)
+
+include $(top_srcdir)/build/subst.inc
+SUFFIXES = .in
+
+dist_plugins_SCRIPTS = \
+	cgroup-name.sh \
+	cgroup-network-helper.sh \
+	$(NULL)
+
+dist_noinst_DATA = \
+	cgroup-name.sh.in \
+	README.md \
+	$(NULL)
diff --git a/charts.d/Makefile.in b/collectors/cgroups.plugin/Makefile.in
index ebd1af2be..49c3c9834 100644
--- a/charts.d/Makefile.in
+++ b/collectors/cgroups.plugin/Makefile.in
@@ -14,6 +14,8 @@
 
 @SET_MAKE@
 
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 
 VPATH = @srcdir@
 am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
@@ -79,18 +81,21 @@ PRE_UNINSTALL = :
 POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
-subdir = charts.d
-DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
-	$(dist_charts_SCRIPTS) $(dist_charts_DATA)
+DIST_COMMON = $(top_srcdir)/build/subst.inc $(srcdir)/Makefile.in \
+	$(srcdir)/Makefile.am $(dist_plugins_SCRIPTS) \
+	$(dist_noinst_DATA)
+subdir = collectors/cgroups.plugin
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -124,8 +129,8 @@ am__uninstall_files_from_dir = { \
     || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
          $(am__cd) "$$dir" && rm -f $$files; }; \
   }
-am__installdirs = "$(DESTDIR)$(chartsdir)" "$(DESTDIR)$(chartsdir)"
-SCRIPTS = $(dist_charts_SCRIPTS)
+am__installdirs = "$(DESTDIR)$(pluginsdir)"
+SCRIPTS = $(dist_plugins_SCRIPTS)
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
 am__v_P_0 = false
@@ -145,7 +150,7 @@ am__can_run_installinfo = \
     n|no|NO) false;; \
     *) (install-info --version) >/dev/null 2>&1;; \
   esac
-DATA = $(dist_charts_DATA)
+DATA = $(dist_noinst_DATA)
 am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
@@ -245,6 +250,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -266,6 +272,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
@@ -292,42 +299,28 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 varlibdir = @varlibdir@
 webdir = @webdir@
-
-#
-# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
-#
+AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
-dist_charts_SCRIPTS = \
+CLEANFILES = \
+	cgroup-name.sh \
+	$(NULL)
+
+SUFFIXES = .in
+dist_plugins_SCRIPTS = \
+	cgroup-name.sh \
+	cgroup-network-helper.sh \
 	$(NULL)
 
-dist_charts_DATA = \
+dist_noinst_DATA = \
+	cgroup-name.sh.in \
 	README.md \
-	ap.chart.sh \
-	apcupsd.chart.sh \
-	apache.chart.sh \
-	cpu_apps.chart.sh \
-	cpufreq.chart.sh \
-	example.chart.sh \
-	exim.chart.sh \
-	hddtemp.chart.sh \
-	libreswan.chart.sh \
-	load_average.chart.sh \
-	mem_apps.chart.sh \
-	mysql.chart.sh \
-	nginx.chart.sh \
-	nut.chart.sh \
-	opensips.chart.sh \
-	phpfpm.chart.sh \
-	postfix.chart.sh \
-	sensors.chart.sh \
-	squid.chart.sh \
-	tomcat.chart.sh \
 	$(NULL)
 
 all: all-am
 
 .SUFFIXES:
-$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+.SUFFIXES: .in
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/build/subst.inc $(am__configure_deps)
 	@for dep in $?; do \
 	  case '$(am__configure_deps)' in \
 	    *$$dep*) \
@@ -336,9 +329,9 @@ $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__confi
 	      exit 1;; \
 	  esac; \
 	done; \
-	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu charts.d/Makefile'; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/cgroups.plugin/Makefile'; \
 	$(am__cd) $(top_srcdir) && \
-	  $(AUTOMAKE) --gnu charts.d/Makefile
+	  $(AUTOMAKE) --gnu collectors/cgroups.plugin/Makefile
 .PRECIOUS: Makefile
 Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	@case '$?' in \
@@ -348,6 +341,7 @@ Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
 	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
 	esac;
+$(top_srcdir)/build/subst.inc:
 
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
@@ -357,12 +351,12 @@ $(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
 $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
 $(am__aclocal_m4_deps):
-install-dist_chartsSCRIPTS: $(dist_charts_SCRIPTS)
+install-dist_pluginsSCRIPTS: $(dist_plugins_SCRIPTS)
 	@$(NORMAL_INSTALL)
-	@list='$(dist_charts_SCRIPTS)'; test -n "$(chartsdir)" || list=; \
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || list=; \
 	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(chartsdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(chartsdir)" || exit 1; \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pluginsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pluginsdir)" || exit 1; \
 	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
@@ -381,38 +375,17 @@ install-dist_chartsSCRIPTS: $(dist_charts_SCRIPTS)
 	while read type dir files; do \
 	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
 	     test -z "$$files" || { \
-	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(chartsdir)$$dir'"; \
-	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(chartsdir)$$dir" || exit $$?; \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(pluginsdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(pluginsdir)$$dir" || exit $$?; \
 	     } \
 	; done
 
-uninstall-dist_chartsSCRIPTS:
+uninstall-dist_pluginsSCRIPTS:
 	@$(NORMAL_UNINSTALL)
-	@list='$(dist_charts_SCRIPTS)'; test -n "$(chartsdir)" || exit 0; \
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || exit 0; \
 	files=`for p in $$list; do echo "$$p"; done | \
 	       sed -e 's,.*/,,;$(transform)'`; \
-	dir='$(DESTDIR)$(chartsdir)'; $(am__uninstall_files_from_dir)
-install-dist_chartsDATA: $(dist_charts_DATA)
-	@$(NORMAL_INSTALL)
-	@list='$(dist_charts_DATA)'; test -n "$(chartsdir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(chartsdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(chartsdir)" || exit 1; \
-	fi; \
-	for p in $$list; do \
-	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
-	  echo "$$d$$p"; \
-	done | $(am__base_list) | \
-	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(chartsdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(chartsdir)" || exit $$?; \
-	done
-
-uninstall-dist_chartsDATA:
-	@$(NORMAL_UNINSTALL)
-	@list='$(dist_charts_DATA)'; test -n "$(chartsdir)" || list=; \
-	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(chartsdir)'; $(am__uninstall_files_from_dir)
+	dir='$(DESTDIR)$(pluginsdir)'; $(am__uninstall_files_from_dir)
 tags TAGS:
 
 ctags CTAGS:
@@ -454,7 +427,7 @@ check-am: all-am
 check: check-am
 all-am: Makefile $(SCRIPTS) $(DATA)
 installdirs:
-	for dir in "$(DESTDIR)$(chartsdir)" "$(DESTDIR)$(chartsdir)"; do \
+	for dir in "$(DESTDIR)$(pluginsdir)"; do \
 	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
 	done
 install: install-am
@@ -479,6 +452,7 @@ install-strip:
 mostlyclean-generic:
 
 clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
 
 distclean-generic:
 	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
@@ -508,7 +482,7 @@ info: info-am
 
 info-am:
 
-install-data-am: install-dist_chartsDATA install-dist_chartsSCRIPTS
+install-data-am: install-dist_pluginsSCRIPTS
 
 install-dvi: install-dvi-am
 
@@ -552,23 +526,37 @@ ps: ps-am
 
 ps-am:
 
-uninstall-am: uninstall-dist_chartsDATA uninstall-dist_chartsSCRIPTS
+uninstall-am: uninstall-dist_pluginsSCRIPTS
 
 .MAKE: install-am install-strip
 
 .PHONY: all all-am check check-am clean clean-generic cscopelist-am \
 	ctags-am distclean distclean-generic distdir dvi dvi-am html \
 	html-am info info-am install install-am install-data \
-	install-data-am install-dist_chartsDATA \
-	install-dist_chartsSCRIPTS install-dvi install-dvi-am \
-	install-exec install-exec-am install-html install-html-am \
-	install-info install-info-am install-man install-pdf \
-	install-pdf-am install-ps install-ps-am install-strip \
-	installcheck installcheck-am installdirs maintainer-clean \
-	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
-	pdf-am ps ps-am tags-am uninstall uninstall-am \
-	uninstall-dist_chartsDATA uninstall-dist_chartsSCRIPTS
-
+	install-data-am install-dist_pluginsSCRIPTS install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-generic pdf pdf-am ps ps-am tags-am uninstall \
+	uninstall-am uninstall-dist_pluginsSCRIPTS
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
+		-e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
+		-e 's#[@]pythondir_POST@#$(pythondir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
+		$< > $@.tmp; then \
+		mv "$@.tmp" "$@"; \
+	else \
+		rm -f "$@.tmp"; \
+		false; \
+	fi
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
diff --git a/collectors/cgroups.plugin/README.md b/collectors/cgroups.plugin/README.md
new file mode 100644
index 000000000..e78aa0440
--- /dev/null
+++ b/collectors/cgroups.plugin/README.md
@@ -0,0 +1,187 @@
+# cgroups.plugin
+
+You can monitor containers and virtual machines using **cgroups**.
+
+cgroups (or control groups), are a Linux kernel feature that provides accounting and resource usage limiting for processes. When cgroups are bundled with namespaces (i.e. isolation), they form what we usually call **containers**.
+
+cgroups are hierarchical, meaning that cgroups can contain child cgroups, which can contain more cgroups, etc. All accounting is reported (and resource usage limits are applied) also in a hierarchical way.
+
+To visualize cgroup metrics netdata provides configuration for cherry picking the cgroups of interest. By default (without any configuration) netdata should pick **systemd services**, all kinds of **containers** (lxc, docker, etc) and **virtual machines** spawn by managers that register them with cgroups (qemu, libvirt, etc).
+
+## configuring netdata for cgroups
+
+For each cgroup available in the system, netdata provides this configuration:
+
+```
+[plugin:cgroups]
+    enable cgroup XXX = yes | no
+```
+
+But it also provides a few patterns to provide a sane default (`yes` or `no`).
+
+Below we see, how this works.
+
+### how netdata finds the available cgroups
+
+Linux exposes resource usage reporting and provides dynamic configuration for cgroups, using virtual files (usually) under `/sys/fs/cgroup`. netdata reads `/proc/self/mountinfo` to detect the exact mount point of cgroups. netdata also allows manual configuration of this mount point, using these settings:
+
+```
+[plugin:cgroups]
+	check for new cgroups every = 10
+	path to /sys/fs/cgroup/cpuacct = /sys/fs/cgroup/cpuacct
+	path to /sys/fs/cgroup/blkio = /sys/fs/cgroup/blkio
+	path to /sys/fs/cgroup/memory = /sys/fs/cgroup/memory
+	path to /sys/fs/cgroup/devices = /sys/fs/cgroup/devices
+``` 
+
+netdata rescans these directories for added or removed cgroups every `check for new cgroups every` seconds.
+
+### hierarchical search for cgroups
+
+Since cgroups are hierarchical, for each of the directories shown above, netdata walks through the subdirectories recursively searching for cgroups (each subdirectory is another cgroup).
+
+For each of the directories found, netdata provides a configuration variable:
+
+```
+[plugin:cgroups]
+	search for cgroups under PATH = yes | no
+```
+
+To provide a sane default for this setting, netdata uses the following pattern list (patterns starting with `!` give a negative match and their order is important: the first matching a path will be used):
+
+```
+[plugin:cgroups]
+	search for cgroups in subpaths matching =  !*/init.scope  !*-qemu  !/init.scope  !/system  !/systemd  !/user  !/user.slice  * 
+```
+
+So, we disable checking for **child cgroups** in systemd internal cgroups ([systemd services are monitored by netdata](https://github.com/netdata/netdata/wiki/monitoring-systemd-services)), user cgroups (normally used for desktop and remote user sessions), qemu virtual machines (child cgroups of virtual machines) and `init.scope`. All others are enabled.
+
+
+### enabled cgroups
+
+To check if the cgroup is enabled, netdata uses this setting:
+
+```
+[plugin:cgroups]
+	enable cgroup NAME = yes | no
+```
+
+To provide a sane default, netdata uses the following pattern list (it checks the pattern against the path of the cgroup):
+
+```
+[plugin:cgroups]
+	enable by default cgroups matching =  !*/init.scope  *.scope  !*/vcpu*  !*/emulator  !*.mount  !*.partition  !*.service  !*.slice  !*.swap  !*.user  !/  !/docker  !/libvirt  !/lxc  !/lxc/*/ns  !/lxc/*/ns/*  !/machine  !/qemu  !/system  !/systemd  !/user  * 
+```
+
+The above provides the default `yes` or `no` setting for the cgroup. However, there is an additional step. In many cases the cgroups found in the `/sys/fs/cgroup` hierarchy are just random numbers and in many cases these numbers are ephemeral: they change across reboots or sessions.
+
+So, we need to somehow map the paths of the cgroups to names, to provide consistent netdata configuration (i.e. there is no point to say `enable cgroup 1234 = yes | no`, if `1234` is a random number that changes over time - we need a name for the cgroup first, so that `enable cgroup NAME = yes | no` will be consistent).
+
+For this mapping netdata provides 2 configuration options:
+
+```
+[plugin:cgroups]
+	run script to rename cgroups matching =  *.scope  *docker*  *lxc*  *qemu*  !/  !*.mount  !*.partition  !*.service  !*.slice  !*.swap  !*.user  *
+	script to get cgroup names = /usr/libexec/netdata/plugins.d/cgroup-name.sh
+```
+
+The whole point for the additional pattern list, is to limit the number of times the script will be called. Without this pattern list, the script might be called thousands of times, depending on the number of cgroups available in the system.
+
+The above pattern list is matched against the path of the cgroup. For matched cgroups, netdata calls the script [cgroup-name.sh](https://github.com/netdata/netdata/blob/master/collectors/cgroups.plugin/cgroup-name.sh.in) to get its name. This script queries `docker`, or applies heuristics to find give a name for the cgroup.
+
+## Monitoring systemd services
+
+netdata monitors **systemd services**. Example:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/21964372/20cd7b84-db53-11e6-98a2-b9c986b082c0.png)
+
+Support per distribution:
+
+system|systemd services<br/>charts shown|`tree`<br/>`/sys/fs/cgroup`|comments
+:-------:|:-------:|:-------:|:------------
+Arch Linux|YES| |
+Gentoo|NO| |can be enabled, see below
+Ubuntu 16.04 LTS|YES| |
+Ubuntu 16.10|YES|[here](http://pastebin.com/PiWbQEXy)|
+Fedora 25|YES|[here](http://pastebin.com/ax0373wF)|
+Debian 8|NO| |can be enabled, see below
+AMI|NO|[here](http://pastebin.com/FrxmptjL)|not a systemd system
+Centos 7.3.1611|NO|[here](http://pastebin.com/SpzgezAg)|can be enabled, see below
+
+#### how to enable cgroup accounting on systemd systems that is by default disabled
+
+You can verify there is no accounting enabled, by running `systemd-cgtop`. The program will show only resources for cgroup ` / `, but all services will show nothing.
+
+To enable cgroup accounting, execute this:
+
+```sh
+sed -e 's|^#Default\(.*\)Accounting=.*$|Default\1Accounting=yes|g' /etc/systemd/system.conf >/tmp/system.conf
+```
+
+To see the changes it made, run this:
+
+```
+# diff /etc/systemd/system.conf /tmp/system.conf
+40,44c40,44
+< #DefaultCPUAccounting=no
+< #DefaultIOAccounting=no
+< #DefaultBlockIOAccounting=no
+< #DefaultMemoryAccounting=no
+< #DefaultTasksAccounting=yes
+---
+> DefaultCPUAccounting=yes
+> DefaultIOAccounting=yes
+> DefaultBlockIOAccounting=yes
+> DefaultMemoryAccounting=yes
+> DefaultTasksAccounting=yes
+```
+
+If you are happy with the changes, run:
+
+```sh
+# copy the file to the right location
+sudo cp /tmp/system.conf /etc/systemd/system.conf
+
+# restart systemd to take it into account
+sudo systemctl daemon-reexec
+```
+
+(`systemctl daemon-reload` does not reload the configuration of the server - so you have to execute `systemctl daemon-reexec`).
+
+Now, when you run `systemd-cgtop`, services will start reporting usage (if it does not, restart a service - any service - to wake it up). Refresh your netdata dashboard, and you will have the charts too.
+
+In case memory accounting is missing, you will need to enable it at your kernel, by appending the following kernel boot options and rebooting:
+
+```
+cgroup_enable=memory swapaccount=1
+```
+
+You can add the above, directly at the `linux` line in your `/boot/grub/grub.cfg` or appending them to the `GRUB_CMDLINE_LINUX` in `/etc/default/grub` (in which case you will have to run `update-grub` before rebooting). On DigitalOcean debian images you may have to set it at `/etc/default/grub.d/50-cloudimg-settings.cfg`.
+
+---
+
+## Monitoring ephemeral containers
+
+netdata monitors containers automatically when it is installed at the host, or when it is installed in a container that has access to the `/proc` and `/sys` filesystems of the host.
+
+netdata prior to v1.6 had 2 issues when such containers were monitored:
+
+1. network interface alarms where triggering when containers were stopped
+
+2. charts were never cleaned up, so after some time dozens of containers were showing up on the dashboard, and they were occupying memory.
+
+
+### the current netdata
+
+network interfaces and cgroups (containers) are now self-cleaned.
+
+So, when a network interface or container stops, netdata might log a few errors in error.log complaining about files it cannot find, but immediately:
+
+1. it will detect this is a removed container or network interface
+2. it will freeze/pause all alarms for them
+3. it will mark their charts as obsolete
+4. obsolete charts are not be offered on new dashboard sessions (so hit F5 and the charts are gone)
+5. existing dashboard sessions will continue to see them, but of course they will not refresh
+6. obsolete charts will be removed from memory, 1 hour after the last user viewed them (configurable with `[global].cleanup obsolete charts after seconds = 3600` (at netdata.conf).
+7. when obsolete charts are removed from memory they are also deleted from disk (configurable with `[global].delete obsolete charts files = yes`)
+
diff --git a/plugins.d/cgroup-name.sh b/collectors/cgroups.plugin/cgroup-name.sh
index 3c8ad7205..6bf8b8b03 100755..100644
--- a/plugins.d/cgroup-name.sh
+++ b/collectors/cgroups.plugin/cgroup-name.sh
@@ -3,7 +3,7 @@
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 # Script to find a better name for cgroups
 #
@@ -51,8 +51,10 @@ debug() {
 
 # -----------------------------------------------------------------------------
 
-[ -z "${NETDATA_CONFIG_DIR}" ] && NETDATA_CONFIG_DIR="$(dirname "${0}")/../../../../etc/netdata"
-CONFIG="${NETDATA_CONFIG_DIR}/cgroups-names.conf"
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="/usr/local/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/local/lib/netdata/conf.d"
+
+DOCKER_HOST="${DOCKER_HOST:=/var/run/docker.sock}"
 CGROUP="${1}"
 NAME=
 
@@ -63,16 +65,21 @@ if [ -z "${CGROUP}" ]
     fatal "called without a cgroup name. Nothing to do."
 fi
 
-if [ -f "${CONFIG}" ]
+for CONFIG in "${NETDATA_USER_CONFIG_DIR}/cgroups-names.conf" "${NETDATA_STOCK_CONFIG_DIR}/cgroups-names.conf"
+do
+    if [ -f "${CONFIG}" ]
     then
-    NAME="$(grep "^${CGROUP} " "${CONFIG}" | sed "s/[[:space:]]\+/ /g" | cut -d ' ' -f 2)"
-    if [ -z "${NAME}" ]
-        then
-        info "cannot find cgroup '${CGROUP}' in '${CONFIG}'."
+        NAME="$(grep "^${CGROUP} " "${CONFIG}" | sed "s/[[:space:]]\+/ /g" | cut -d ' ' -f 2)"
+        if [ -z "${NAME}" ]
+            then
+            info "cannot find cgroup '${CGROUP}' in '${CONFIG}'."
+        else
+            break
+        fi
+    #else
+    #   info "configuration file '${CONFIG}' is not available."
     fi
-#else
-#   info "configuration file '${CONFIG}' is not available."
-fi
+done
 
 function docker_get_name_classic {
     local id="${1}"
@@ -83,13 +90,13 @@ function docker_get_name_classic {
 
 function docker_get_name_api {
     local id="${1}"
-    if [ ! -S "/var/run/docker.sock" ]
+    if [ ! -S "${DOCKER_HOST}" ]
         then
-        warning "Can't find /var/run/docker.sock"
+        warning "Can't find ${DOCKER_HOST}"
         return 1
     fi
     info "Running API command: /containers/${id}/json"
-    JSON=$(echo -e "GET /containers/${id}/json HTTP/1.0\r\n" | nc -U /var/run/docker.sock | grep '^{.*')
+    JSON=$(echo -e "GET /containers/${id}/json HTTP/1.0\r\n" | nc -U ${DOCKER_HOST} | grep '^{.*')
     NAME=$(echo $JSON | jq -r .Name,.Config.Hostname | grep -v null | head -n1 | sed 's|^/||')
     return 0
 }
diff --git a/collectors/cgroups.plugin/cgroup-name.sh.in b/collectors/cgroups.plugin/cgroup-name.sh.in
new file mode 100755
index 000000000..53696a4bf
--- /dev/null
+++ b/collectors/cgroups.plugin/cgroup-name.sh.in
@@ -0,0 +1,196 @@
+#!/usr/bin/env bash
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# Script to find a better name for cgroups
+#
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+# -----------------------------------------------------------------------------
+
+PROGRAM_NAME="$(basename "${0}")"
+
+logdate() {
+    date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+    local status="${1}"
+    shift
+
+    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+    log WARNING "${@}"
+}
+
+error() {
+    log ERROR "${@}"
+}
+
+info() {
+    log INFO "${@}"
+}
+
+fatal() {
+    log FATAL "${@}"
+    exit 1
+}
+
+debug=0
+debug() {
+    [ $debug -eq 1 ] && log DEBUG "${@}"
+}
+
+# -----------------------------------------------------------------------------
+
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="@configdir_POST@"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="@libconfigdir_POST@"
+
+DOCKER_HOST="${DOCKER_HOST:=/var/run/docker.sock}"
+CGROUP="${1}"
+NAME=
+
+# -----------------------------------------------------------------------------
+
+if [ -z "${CGROUP}" ]
+    then
+    fatal "called without a cgroup name. Nothing to do."
+fi
+
+for CONFIG in "${NETDATA_USER_CONFIG_DIR}/cgroups-names.conf" "${NETDATA_STOCK_CONFIG_DIR}/cgroups-names.conf"
+do
+    if [ -f "${CONFIG}" ]
+    then
+        NAME="$(grep "^${CGROUP} " "${CONFIG}" | sed "s/[[:space:]]\+/ /g" | cut -d ' ' -f 2)"
+        if [ -z "${NAME}" ]
+            then
+            info "cannot find cgroup '${CGROUP}' in '${CONFIG}'."
+        else
+            break
+        fi
+    #else
+    #   info "configuration file '${CONFIG}' is not available."
+    fi
+done
+
+function docker_get_name_classic {
+    local id="${1}"
+    info "Running command: docker ps --filter=id=\"${id}\" --format=\"{{.Names}}\""
+    NAME="$( docker ps --filter=id="${id}" --format="{{.Names}}" )"
+    return 0
+}
+
+function docker_get_name_api {
+    local id="${1}"
+    if [ ! -S "${DOCKER_HOST}" ]
+        then
+        warning "Can't find ${DOCKER_HOST}"
+        return 1
+    fi
+    info "Running API command: /containers/${id}/json"
+    JSON=$(echo -e "GET /containers/${id}/json HTTP/1.0\r\n" | nc -U ${DOCKER_HOST} | grep '^{.*')
+    NAME=$(echo $JSON | jq -r .Name,.Config.Hostname | grep -v null | head -n1 | sed 's|^/||')
+    return 0
+}
+
+function docker_get_name {
+    local id="${1}"
+    if hash docker 2>/dev/null
+        then
+        docker_get_name_classic "${id}"
+    else
+        docker_get_name_api "${id}" || docker_get_name_classic "${id}"
+    fi
+    if [ -z "${NAME}" ]
+        then
+        warning "cannot find the name of docker container '${id}'"
+        NAME="${id:0:12}"
+    else
+        info "docker container '${id}' is named '${NAME}'"
+    fi
+}
+
+if [ -z "${NAME}" ]
+    then
+    if [[ "${CGROUP}" =~ ^.*docker[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]
+        then
+        # docker containers
+
+        DOCKERID="$( echo "${CGROUP}" | sed "s|^.*docker[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|" )"
+        # echo "DOCKERID=${DOCKERID}"
+
+        if [ ! -z "${DOCKERID}" -a \( ${#DOCKERID} -eq 64 -o ${#DOCKERID} -eq 12 \) ]
+            then
+            docker_get_name "${DOCKERID}"
+        else
+            error "a docker id cannot be extracted from docker cgroup '${CGROUP}'."
+        fi
+    elif [[ "${CGROUP}" =~ ^.*kubepods[_/].*[_/]pod[a-fA-F0-9-]+[_/][a-fA-F0-9]+$ ]]
+        then
+        # kubernetes
+
+        DOCKERID="$( echo "${CGROUP}" | sed "s|^.*kubepods[_/].*[_/]pod[a-fA-F0-9-]\+[_/]\([a-fA-F0-9]\+\)$|\1|" )"
+        # echo "DOCKERID=${DOCKERID}"
+
+        if [ ! -z "${DOCKERID}" -a \( ${#DOCKERID} -eq 64 -o ${#DOCKERID} -eq 12 \) ]
+            then
+            docker_get_name "${DOCKERID}"
+        else
+            error "a docker id cannot be extracted from kubernetes cgroup '${CGROUP}'."
+        fi
+    elif [[ "${CGROUP}" =~ machine.slice[_/].*\.service ]]
+        then
+        # systemd-nspawn
+
+        NAME="$(echo ${CGROUP} | sed 's/.*machine.slice[_\/]\(.*\)\.service/\1/g')"
+
+    elif [[ "${CGROUP}" =~ machine.slice_machine.*-qemu ]]
+        then
+        # libvirtd / qemu virtual machines
+
+        # NAME="$(echo ${CGROUP} | sed 's/machine.slice_machine.*-qemu//; s/\/x2d//; s/\/x2d/\-/g; s/\.scope//g')"
+        NAME="qemu_$(echo ${CGROUP} | sed 's/machine.slice_machine.*-qemu//; s/\/x2d[[:digit:]]*//; s/\/x2d//g; s/\.scope//g')"
+
+    elif [[ "${CGROUP}" =~ machine_.*\.libvirt-qemu ]]
+        then
+        # libvirtd / qemu virtual machines
+        NAME="qemu_$(echo ${CGROUP} | sed 's/^machine_//; s/\.libvirt-qemu$//; s/-/_/;')"
+
+    elif [[ "${CGROUP}" =~ qemu.slice_([0-9]+).scope && -d /etc/pve ]]
+        then
+        # Proxmox VMs
+
+        FILENAME="/etc/pve/qemu-server/${BASH_REMATCH[1]}.conf"
+        if [[ -f $FILENAME && -r $FILENAME ]]
+            then
+            NAME="qemu_$(grep -e '^name: ' "/etc/pve/qemu-server/${BASH_REMATCH[1]}.conf" | head -1 | sed -rn 's|\s*name\s*:\s*(.*)?$|\1|p')"
+        else
+            error "proxmox config file missing ${FILENAME} or netdata does not have read access.  Please ensure netdata is a member of www-data group."
+        fi
+    elif [[ "${CGROUP}" =~ lxc_([0-9]+) && -d /etc/pve ]]
+        then
+        # Proxmox Containers (LXC)
+
+        FILENAME="/etc/pve/lxc/${BASH_REMATCH[1]}.conf"
+        if [[ -f ${FILENAME} && -r ${FILENAME} ]]
+            then
+            NAME=$(grep -e '^hostname: ' /etc/pve/lxc/${BASH_REMATCH[1]}.conf | head -1 | sed -rn 's|\s*hostname\s*:\s*(.*)?$|\1|p')
+        else
+            error "proxmox config file missing ${FILENAME} or netdata does not have read access.  Please ensure netdata is a member of www-data group."
+        fi
+    fi
+
+    [ -z "${NAME}" ] && NAME="${CGROUP}"
+    [ ${#NAME} -gt 100 ] && NAME="${NAME:0:100}"
+fi
+
+info "cgroup '${CGROUP}' is called '${NAME}'"
+echo "${NAME}"
diff --git a/plugins.d/cgroup-network-helper.sh b/collectors/cgroups.plugin/cgroup-network-helper.sh
index f07059986..666f02fc8 100755
--- a/plugins.d/cgroup-network-helper.sh
+++ b/collectors/cgroups.plugin/cgroup-network-helper.sh
@@ -1,10 +1,11 @@
 #!/usr/bin/env bash
+# shellcheck disable=SC1117
 
 # cgroup-network-helper.sh
 # detect container and virtual machine interfaces
 #
 # (C) 2017 Costa Tsaousis
-# GPL v3+
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 # This script is called as root (by cgroup-network), with either a pid, or a cgroup path.
 # It tries to find all the network interfaces that belong to the same cgroup.
@@ -23,6 +24,7 @@
 # -----------------------------------------------------------------------------
 
 # the system path is cleared by cgroup-network
+# shellcheck source=/dev/null
 [ -f /etc/profile ] && source /etc/profile
 
 export LC_ALL=C
@@ -66,7 +68,7 @@ debug() {
 # -----------------------------------------------------------------------------
 # check for BASH v4+ (required for associative arrays)
 
-[ $(( ${BASH_VERSINFO[0]} )) -lt 4 ] && \
+[ $(( BASH_VERSINFO[0] )) -lt 4 ] && \
     fatal "BASH version 4 or later is required (this is ${BASH_VERSION})."
 
 # -----------------------------------------------------------------------------
@@ -86,7 +88,7 @@ do
     shift
 done
 
-if [ -z "${pid}" -a -z "${cgroup}" ]
+if [ -z "${pid}" ] && [ -z "${cgroup}" ]
 then
     fatal "Either --pid or --cgroup is required"
 fi
@@ -103,7 +105,7 @@ set_source() {
 
 # cgroup-network can detect veth interfaces by itself (written in C).
 # If you seek for a shell version of what it does, check this:
-# https://github.com/firehol/netdata/issues/474#issuecomment-317866709
+# https://github.com/netdata/netdata/issues/474#issuecomment-317866709
 
 
 # -----------------------------------------------------------------------------
@@ -115,7 +117,7 @@ proc_pid_fdinfo_iff() {
 
     debug "Searching for tun/tap interfaces for pid ${p}..."
     set_source "fdinfo"
-    grep ^iff:.* "${NETDATA_HOST_PREFIX}/proc/${p}/fdinfo"/* 2>/dev/null | cut -f 2
+    grep "^iff:.*" "${NETDATA_HOST_PREFIX}/proc/${p}/fdinfo"/* 2>/dev/null | cut -f 2
 }
 
 find_tun_tap_interfaces_for_cgroup() {
@@ -128,7 +130,7 @@ find_tun_tap_interfaces_for_cgroup() {
         local p
         for p in $(< "${c}/emulator/cgroup.procs" )
         do
-            proc_pid_fdinfo_iff ${p}
+            proc_pid_fdinfo_iff "${p}"
         done
     fi
 }
@@ -154,11 +156,14 @@ virsh_find_all_interfaces_for_cgroup() {
     local c="${1}" # the cgroup path
 
     # the virsh command
-    local virsh="$(which virsh 2>/dev/null || command -v virsh 2>/dev/null)"
+    local virsh
+    # shellcheck disable=SC2230
+    virsh="$(which virsh 2>/dev/null || command -v virsh 2>/dev/null)"
 
     if [ ! -z "${virsh}" ]
     then
-        local d="$(virsh_cgroup_to_domain_name "${c}")"
+        local d
+        d="$(virsh_cgroup_to_domain_name "${c}")"
 
         if [ ! -z "${d}" ]
         then
@@ -167,7 +172,7 @@ virsh_find_all_interfaces_for_cgroup() {
             # match only 'network' interfaces from virsh output
 
             set_source "virsh"
-            "${virsh}" -r domiflist ${d} |\
+            "${virsh}" -r domiflist "${d}" |\
                 sed -n \
                     -e "s|^\([^[:space:]]\+\)[[:space:]]\+network[[:space:]]\+\([^[:space:]]\+\)[[:space:]]\+[^[:space:]]\+[[:space:]]\+[^[:space:]]\+$|\1 \1_\2|p" \
                     -e "s|^\([^[:space:]]\+\)[[:space:]]\+bridge[[:space:]]\+\([^[:space:]]\+\)[[:space:]]\+[^[:space:]]\+[[:space:]]\+[^[:space:]]\+$|\1 \1_\2|p"
@@ -188,7 +193,7 @@ find_all_interfaces_of_pid_or_cgroup() {
     then
         # we have been called with a pid
 
-        proc_pid_fdinfo_iff ${p}
+        proc_pid_fdinfo_iff "${p}"
 
     elif [ ! -z "${c}" ]
     then
@@ -219,6 +224,7 @@ declare -A devs=()
 # store all interfaces found in the associative array
 # this will also give the unique devices, as seen by the host
 last_src=
+# shellcheck disable=SC2162
 while read host_device guest_device
 do
     [ -z "${host_device}" ] && continue
@@ -231,8 +237,9 @@ do
     # when we run in debug, show the source
     debug "Found host device '${host_device}', guest device '${guest_device}', detected via '${last_src}'"
 
-    [ -z "${devs[${host_device}]}" -o "${devs[${host_device}]}" = "${host_device}" ] && \
+    if [ -z "${devs[${host_device}]}" ] || [ "${devs[${host_device}]}" = "${host_device}" ]; then
         devs[${host_device}]="${guest_device}"
+    fi
 
 done < <( find_all_interfaces_of_pid_or_cgroup "${pid}" "${cgroup}" )
 
diff --git a/src/cgroup-network.c b/collectors/cgroups.plugin/cgroup-network.c
index 0e2d5163a..0cf2a2633 100644
--- a/src/cgroup-network.c
+++ b/collectors/cgroups.plugin/cgroup-network.c
@@ -1,5 +1,6 @@
-#include "common.h"
-#include <libgen.h>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "libnetdata/libnetdata.h"
 
 #ifdef HAVE_SETNS
 #ifndef _GNU_SOURCE
@@ -8,8 +9,6 @@
 #include <sched.h>
 #endif
 
-char *host_prefix = "";
-
 char environment_variable2[FILENAME_MAX + 50] = "";
 char *environment[] = {
         "PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin",
@@ -19,14 +18,28 @@ char *environment[] = {
 
 
 // ----------------------------------------------------------------------------
-// callback required by fatal()
 
+// callback required by fatal()
 void netdata_cleanup_and_exit(int ret) {
     exit(ret);
 }
-void health_reload(void) {};
-void rrdhost_save_all(void) {};
 
+// callbacks required by popen()
+void signals_block(void) {};
+void signals_unblock(void) {};
+void signals_reset(void) {};
+
+// callback required by eval()
+int health_variable_lookup(const char *variable, uint32_t hash, struct rrdcalc *rc, calculated_number *result) {
+    (void)variable;
+    (void)hash;
+    (void)rc;
+    (void)result;
+    return 0;
+};
+
+// required by get_system_cpus()
+char *netdata_configured_host_prefix = "";
 
 // ----------------------------------------------------------------------------
 
@@ -41,8 +54,10 @@ struct iface {
 };
 
 unsigned int read_iface_iflink(const char *prefix, const char *iface) {
+    if(!prefix) prefix = "";
+
     char filename[FILENAME_MAX + 1];
-    snprintfz(filename, FILENAME_MAX, "%s/sys/class/net/%s/iflink", prefix?prefix:"", iface);
+    snprintfz(filename, FILENAME_MAX, "%s/sys/class/net/%s/iflink", prefix, iface);
 
     unsigned long long iflink = 0;
     int ret = read_single_number_file(filename, &iflink);
@@ -52,8 +67,10 @@ unsigned int read_iface_iflink(const char *prefix, const char *iface) {
 }
 
 unsigned int read_iface_ifindex(const char *prefix, const char *iface) {
+    if(!prefix) prefix = "";
+
     char filename[FILENAME_MAX + 1];
-    snprintfz(filename, FILENAME_MAX, "%s/sys/class/net/%s/ifindex", prefix?prefix:"", iface);
+    snprintfz(filename, FILENAME_MAX, "%s/sys/class/net/%s/ifindex", prefix, iface);
 
     unsigned long long ifindex = 0;
     int ret = read_single_number_file(filename, &ifindex);
@@ -63,10 +80,12 @@ unsigned int read_iface_ifindex(const char *prefix, const char *iface) {
 }
 
 struct iface *read_proc_net_dev(const char *prefix) {
+    if(!prefix) prefix = "";
+
     procfile *ff = NULL;
     char filename[FILENAME_MAX + 1];
 
-    snprintfz(filename, FILENAME_MAX, "%s%s", prefix?prefix:"", "/proc/net/dev");
+    snprintfz(filename, FILENAME_MAX, "%s%s", prefix, (*prefix)?"/proc/1/net/dev":"/proc/net/dev");
     ff = procfile_open(filename, " \t,:|", PROCFILE_FLAG_DEFAULT);
     if(unlikely(!ff)) {
         error("Cannot open file '%s'", filename);
@@ -163,12 +182,14 @@ static void continue_as_child(void) {
 }
 
 int proc_pid_fd(const char *prefix, const char *ns, pid_t pid) {
+    if(!prefix) prefix = "";
+
     char filename[FILENAME_MAX + 1];
-    snprintfz(filename, FILENAME_MAX, "%s/proc/%d/%s", prefix?prefix:"", (int)pid, ns);
+    snprintfz(filename, FILENAME_MAX, "%s/proc/%d/%s", prefix, (int)pid, ns);
     int fd = open(filename, O_RDONLY);
 
     if(fd == -1)
-        error("Cannot open file '%s'", filename);
+        error("Cannot open proc_pid_fd() file '%s'", filename);
 
     return fd;
 }
@@ -193,6 +214,8 @@ static struct ns {
 };
 
 int switch_namespace(const char *prefix, pid_t pid) {
+    if(!prefix) prefix = "";
+
 #ifdef HAVE_SETNS
 
     int i;
@@ -207,8 +230,8 @@ int switch_namespace(const char *prefix, pid_t pid) {
     // 2 passes - found it at nsenter source code
     // this is related CLONE_NEWUSER functionality
 
-    // FIXME: this code cannot switch user namespace
-    // Fortunately, we don't need it.
+    // This code cannot switch user namespace (it can all the other namespaces)
+    // Fortunately, we don't need to switch user namespaces.
 
     int pass, errors = 0;
     for(pass = 0; pass < 2 ;pass++) {
@@ -272,9 +295,15 @@ int switch_namespace(const char *prefix, pid_t pid) {
 }
 
 pid_t read_pid_from_cgroup_file(const char *filename) {
-    FILE *fp = fopen(filename, "r");
+    int fd = open(filename, procfile_open_flags);
+    if(fd == -1) {
+        error("Cannot open pid_from_cgroup() file '%s'.", filename);
+        return 0;
+    }
+
+    FILE *fp = fdopen(fd, "r");
     if(!fp) {
-        error("Cannot read file '%s'.", filename);
+        error("Cannot upgrade fd to fp for file '%s'.", filename);
         return 0;
     }
 
@@ -387,14 +416,13 @@ int send_devices(void) {
 // since it switches namespaces, so after this call, everything is different!
 
 void detect_veth_interfaces(pid_t pid) {
-    struct iface *host, *cgroup, *h, *c;
-    const char *prefix = getenv("NETDATA_HOST_PREFIX");
+    struct iface *host = NULL, *cgroup = NULL, *h, *c;
 
-    host = read_proc_net_dev(prefix);
+    host = read_proc_net_dev(netdata_configured_host_prefix);
     if(!host) {
         errno = 0;
         error("cannot read host interface list.");
-        return;
+        goto cleanup;
     }
 
     if(!eligible_ifaces(host)) {
@@ -403,7 +431,7 @@ void detect_veth_interfaces(pid_t pid) {
         goto cleanup;
     }
 
-    if(switch_namespace(prefix, pid)) {
+    if(switch_namespace(netdata_configured_host_prefix, pid)) {
         errno = 0;
         error("cannot switch to the namespace of pid %u", (unsigned int) pid);
         goto cleanup;
@@ -433,6 +461,7 @@ void detect_veth_interfaces(pid_t pid) {
     }
 
 cleanup:
+    free_host_ifaces(cgroup);
     free_host_ifaces(host);
 }
 
@@ -444,17 +473,18 @@ void call_the_helper(pid_t pid, const char *cgroup) {
     if(setresuid(0, 0, 0) == -1)
         error("setresuid(0, 0, 0) failed.");
 
-    char buffer[CGROUP_NETWORK_INTERFACE_MAX_LINE + 1];
+    char command[CGROUP_NETWORK_INTERFACE_MAX_LINE + 1];
     if(cgroup)
-        snprintfz(buffer, CGROUP_NETWORK_INTERFACE_MAX_LINE, "exec " PLUGINS_DIR "/cgroup-network-helper.sh --cgroup '%s'", cgroup);
+        snprintfz(command, CGROUP_NETWORK_INTERFACE_MAX_LINE, "exec " PLUGINS_DIR "/cgroup-network-helper.sh --cgroup '%s'", cgroup);
     else
-        snprintfz(buffer, CGROUP_NETWORK_INTERFACE_MAX_LINE, "exec " PLUGINS_DIR "/cgroup-network-helper.sh --pid %d", pid);
+        snprintfz(command, CGROUP_NETWORK_INTERFACE_MAX_LINE, "exec " PLUGINS_DIR "/cgroup-network-helper.sh --pid %d", pid);
 
-    info("running: %s", buffer);
+    info("running: %s", command);
 
     pid_t cgroup_pid;
-    FILE *fp = mypopene(buffer, &cgroup_pid, environment);
+    FILE *fp = mypopene(command, &cgroup_pid, environment);
     if(fp) {
+        char buffer[CGROUP_NETWORK_INTERFACE_MAX_LINE + 1];
         char *s;
         while((s = fgets(buffer, CGROUP_NETWORK_INTERFACE_MAX_LINE, fp))) {
             trim(s);
@@ -475,7 +505,7 @@ void call_the_helper(pid_t pid, const char *cgroup) {
         mypclose(fp, cgroup_pid);
     }
     else
-        error("cannot execute cgroup-network helper script: %s", buffer);
+        error("cannot execute cgroup-network helper script: %s", command);
 }
 
 int is_valid_path_symbol(char c) {
@@ -588,22 +618,23 @@ int main(int argc, char **argv) {
     program_version = VERSION;
     error_log_syslog = 0;
 
+    // since cgroup-network runs as root, prevent it from opening symbolic links
+    procfile_open_flags = O_RDONLY|O_NOFOLLOW;
 
     // ------------------------------------------------------------------------
     // make sure NETDATA_HOST_PREFIX is safe
 
-    host_prefix = getenv("NETDATA_HOST_PREFIX");
-    if(!host_prefix || !*host_prefix)
-        host_prefix = "";
+    netdata_configured_host_prefix = getenv("NETDATA_HOST_PREFIX");
+    if(verify_netdata_host_prefix() == -1) exit(1);
 
-    if(host_prefix[0] != '\0' && verify_path(host_prefix) == -1)
-        fatal("invalid NETDATA_HOST_PREFIX '%s'", host_prefix);
+    if(netdata_configured_host_prefix[0] != '\0' && verify_path(netdata_configured_host_prefix) == -1)
+        fatal("invalid NETDATA_HOST_PREFIX '%s'", netdata_configured_host_prefix);
 
     // ------------------------------------------------------------------------
     // build a safe environment for our script
 
     // the first environment variable is a fixed PATH=
-    snprintfz(environment_variable2, sizeof(environment_variable2) - 1, "NETDATA_HOST_PREFIX=%s", host_prefix);
+    snprintfz(environment_variable2, sizeof(environment_variable2) - 1, "NETDATA_HOST_PREFIX=%s", netdata_configured_host_prefix);
 
     // ------------------------------------------------------------------------
 
diff --git a/src/sys_fs_cgroup.c b/collectors/cgroups.plugin/sys_fs_cgroup.c
index f6e613c4b..9c0fd7f43 100644
--- a/src/sys_fs_cgroup.c
+++ b/collectors/cgroups.plugin/sys_fs_cgroup.c
@@ -1,11 +1,14 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "sys_fs_cgroup.h"
+
+#define PLUGIN_CGROUPS_NAME "cgroups.plugin"
+#define PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME "systemd"
+#define PLUGIN_CGROUPS_MODULE_CGROUPS_NAME "/sys/fs/cgroup"
 
 // ----------------------------------------------------------------------------
 // cgroup globals
 
-#define CHART_PRIORITY_SYSTEMD_SERVICES 19000
-#define CHART_PRIORITY_CONTAINERS       40000
-
 static long system_page_size = 4096; // system will be queried via sysconf() in configuration()
 
 static int cgroup_enable_cpuacct_stat = CONFIG_BOOLEAN_AUTO;
@@ -71,7 +74,7 @@ void read_cgroup_plugin_configuration() {
     if(cgroup_update_every < localhost->rrd_update_every)
         cgroup_update_every = localhost->rrd_update_every;
 
-    cgroup_check_for_new_every = (int)config_get_number("plugin:cgroups", "check for new cgroups every", cgroup_check_for_new_every * cgroup_update_every);
+    cgroup_check_for_new_every = (int)config_get_number("plugin:cgroups", "check for new cgroups every", (long long)cgroup_check_for_new_every * (long long)cgroup_update_every);
     if(cgroup_check_for_new_every < cgroup_update_every)
         cgroup_check_for_new_every = cgroup_update_every;
 
@@ -751,53 +754,55 @@ static inline void read_cgroup_network_interfaces(struct cgroup *cg) {
     debug(D_CGROUP, "looking for the network interfaces of cgroup '%s' with chart id '%s' and title '%s'", cg->id, cg->chart_id, cg->chart_title);
 
     pid_t cgroup_pid;
-    char buffer[CGROUP_NETWORK_INTERFACE_MAX_LINE + 1];
+    char command[CGROUP_NETWORK_INTERFACE_MAX_LINE + 1];
 
-    snprintfz(buffer, CGROUP_NETWORK_INTERFACE_MAX_LINE, "exec %s --cgroup '%s%s'", cgroups_network_interface_script, cgroup_cpuacct_base, cg->id);
+    snprintfz(command, CGROUP_NETWORK_INTERFACE_MAX_LINE, "exec %s --cgroup '%s%s'", cgroups_network_interface_script, cgroup_cpuacct_base, cg->id);
 
-    debug(D_CGROUP, "executing command '%s' for cgroup '%s'", buffer, cg->id);
-    FILE *fp = mypopen(buffer, &cgroup_pid);
-    if(fp) {
-        char *s;
-        while((s = fgets(buffer, CGROUP_NETWORK_INTERFACE_MAX_LINE, fp))) {
-            trim(s);
+    debug(D_CGROUP, "executing command '%s' for cgroup '%s'", command, cg->id);
+    FILE *fp = mypopen(command, &cgroup_pid);
+    if(!fp) {
+        error("CGROUP: cannot popen(\"%s\", \"r\").", command);
+        return;
+    }
 
-            if(*s && *s != '\n') {
-                char *t = s;
-                while(*t && *t != ' ') t++;
-                if(*t == ' ') {
-                    *t = '\0';
-                    t++;
-                }
+    char *s;
+    char buffer[CGROUP_NETWORK_INTERFACE_MAX_LINE + 1];
+    while((s = fgets(buffer, CGROUP_NETWORK_INTERFACE_MAX_LINE, fp))) {
+        trim(s);
+
+        if(*s && *s != '\n') {
+            char *t = s;
+            while(*t && *t != ' ') t++;
+            if(*t == ' ') {
+                *t = '\0';
+                t++;
+            }
 
-                if(!*s) {
-                    error("CGROUP: empty host interface returned by script");
-                    continue;
-                }
+            if(!*s) {
+                error("CGROUP: empty host interface returned by script");
+                continue;
+            }
 
-                if(!*t) {
-                    error("CGROUP: empty guest interface returned by script");
-                    continue;
-                }
+            if(!*t) {
+                error("CGROUP: empty guest interface returned by script");
+                continue;
+            }
 
-                struct cgroup_network_interface *i = callocz(1, sizeof(struct cgroup_network_interface));
-                i->host_device = strdupz(s);
-                i->container_device = strdupz(t);
-                i->next = cg->interfaces;
-                cg->interfaces = i;
+            struct cgroup_network_interface *i = callocz(1, sizeof(struct cgroup_network_interface));
+            i->host_device = strdupz(s);
+            i->container_device = strdupz(t);
+            i->next = cg->interfaces;
+            cg->interfaces = i;
 
-                info("CGROUP: cgroup '%s' has network interface '%s' as '%s'", cg->id, i->host_device, i->container_device);
+            info("CGROUP: cgroup '%s' has network interface '%s' as '%s'", cg->id, i->host_device, i->container_device);
 
-                // register a device rename to proc_net_dev.c
-                netdev_rename_device_add(i->host_device, i->container_device, cg->chart_id);
-            }
+            // register a device rename to proc_net_dev.c
+            netdev_rename_device_add(i->host_device, i->container_device, cg->chart_id);
         }
-
-        mypclose(fp, cgroup_pid);
-        // debug(D_CGROUP, "closed command for cgroup '%s'", cg->id);
     }
-    else
-        error("CGROUP: cannot popen(\"%s\", \"r\").", buffer);
+
+    mypclose(fp, cgroup_pid);
+    // debug(D_CGROUP, "closed command for cgroup '%s'", cg->id);
 }
 
 static inline void free_cgroup_network_interfaces(struct cgroup *cg) {
@@ -845,14 +850,15 @@ static inline void cgroup_get_chart_name(struct cgroup *cg) {
     debug(D_CGROUP, "looking for the name of cgroup '%s' with chart id '%s' and title '%s'", cg->id, cg->chart_id, cg->chart_title);
 
     pid_t cgroup_pid;
-    char buffer[CGROUP_CHARTID_LINE_MAX + 1];
+    char command[CGROUP_CHARTID_LINE_MAX + 1];
 
-    snprintfz(buffer, CGROUP_CHARTID_LINE_MAX, "exec %s '%s' '%s'", cgroups_rename_script, cg->chart_id, cg->id);
+    snprintfz(command, CGROUP_CHARTID_LINE_MAX, "exec %s '%s' '%s'", cgroups_rename_script, cg->chart_id, cg->id);
 
-    debug(D_CGROUP, "executing command \"%s\" for cgroup '%s'", buffer, cg->id);
-    FILE *fp = mypopen(buffer, &cgroup_pid);
+    debug(D_CGROUP, "executing command \"%s\" for cgroup '%s'", command, cg->id);
+    FILE *fp = mypopen(command, &cgroup_pid);
     if(fp) {
-        // debug(D_CGROUP, "reading from command '%s' for cgroup '%s'", buffer, cg->id);
+        // debug(D_CGROUP, "reading from command '%s' for cgroup '%s'", command, cg->id);
+        char buffer[CGROUP_CHARTID_LINE_MAX + 1];
         char *s = fgets(buffer, CGROUP_CHARTID_LINE_MAX, fp);
         // debug(D_CGROUP, "closing command for cgroup '%s'", cg->id);
         mypclose(fp, cgroup_pid);
@@ -872,7 +878,7 @@ static inline void cgroup_get_chart_name(struct cgroup *cg) {
         }
     }
     else
-        error("CGROUP: cannot popen(\"%s\", \"r\").", buffer);
+        error("CGROUP: cannot popen(\"%s\", \"r\").", command);
 }
 
 static inline struct cgroup *cgroup_add(const char *id) {
@@ -1460,9 +1466,9 @@ void update_systemd_services_charts(
                     , "services.cpu"
                     , title
                     , "%"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1484,9 +1490,9 @@ void update_systemd_services_charts(
                     , (cgroup_used_memory_without_cache) ? "Systemd Services Used Memory without Cache"
                                                          : "Systemd Services Used Memory"
                     , "MB"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 10
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 10
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1507,9 +1513,9 @@ void update_systemd_services_charts(
                     , "services.mem_rss"
                     , "Systemd Services RSS Memory"
                     , "MB"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 20
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 20
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1528,9 +1534,9 @@ void update_systemd_services_charts(
                     , "services.mem_mapped"
                     , "Systemd Services Mapped Memory"
                     , "MB"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 30
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 30
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1549,9 +1555,9 @@ void update_systemd_services_charts(
                     , "services.mem_cache"
                     , "Systemd Services Cache Memory"
                     , "MB"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 40
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 40
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1570,9 +1576,9 @@ void update_systemd_services_charts(
                     , "services.mem_writeback"
                     , "Systemd Services Writeback Memory"
                     , "MB"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 50
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 50
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1591,9 +1597,9 @@ void update_systemd_services_charts(
                     , "services.mem_pgfault"
                     , "Systemd Services Memory Minor Page Faults"
                     , "MB/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 60
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 60
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1611,9 +1617,9 @@ void update_systemd_services_charts(
                     , "services.mem_pgmajfault"
                     , "Systemd Services Memory Major Page Faults"
                     , "MB/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 70
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 70
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1632,9 +1638,9 @@ void update_systemd_services_charts(
                     , "services.mem_pgpgin"
                     , "Systemd Services Memory Charging Activity"
                     , "MB/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 80
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 80
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1653,9 +1659,9 @@ void update_systemd_services_charts(
                     , "services.mem_pgpgout"
                     , "Systemd Services Memory Uncharging Activity"
                     , "MB/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 90
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 90
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1676,9 +1682,9 @@ void update_systemd_services_charts(
                     , "services.mem_failcnt"
                     , "Systemd Services Memory Limit Failures"
                     , "MB"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 110
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 110
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1699,9 +1705,9 @@ void update_systemd_services_charts(
                     , "services.swap_usage"
                     , "Systemd Services Swap Memory Used"
                     , "MB"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 100
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 100
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1722,9 +1728,9 @@ void update_systemd_services_charts(
                     , "services.io_read"
                     , "Systemd Services Disk Read Bandwidth"
                     , "KB/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 120
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 120
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1743,9 +1749,9 @@ void update_systemd_services_charts(
                     , "services.io_write"
                     , "Systemd Services Disk Write Bandwidth"
                     , "KB/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 130
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 130
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1766,9 +1772,9 @@ void update_systemd_services_charts(
                     , "services.io_ops_read"
                     , "Systemd Services Disk Read Operations"
                     , "operations/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 140
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 140
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1787,9 +1793,9 @@ void update_systemd_services_charts(
                     , "services.io_ops_write"
                     , "Systemd Services Disk Write Operations"
                     , "operations/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 150
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 150
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1810,9 +1816,9 @@ void update_systemd_services_charts(
                     , "services.throttle_io_read"
                     , "Systemd Services Throttle Disk Read Bandwidth"
                     , "KB/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 160
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 160
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1831,9 +1837,9 @@ void update_systemd_services_charts(
                     , "services.throttle_io_write"
                     , "Systemd Services Throttle Disk Write Bandwidth"
                     , "KB/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 170
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 170
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1854,9 +1860,9 @@ void update_systemd_services_charts(
                     , "services.throttle_io_ops_read"
                     , "Systemd Services Throttle Disk Read Operations"
                     , "operations/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 180
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 180
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1875,9 +1881,9 @@ void update_systemd_services_charts(
                     , "services.throttle_io_ops_write"
                     , "Systemd Services Throttle Disk Write Operations"
                     , "operations/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 190
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 190
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1898,9 +1904,9 @@ void update_systemd_services_charts(
                     , "services.queued_io_ops_read"
                     , "Systemd Services Queued Disk Read Operations"
                     , "operations/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 200
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 200
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1919,9 +1925,9 @@ void update_systemd_services_charts(
                     , "services.queued_io_ops_write"
                     , "Systemd Services Queued Disk Write Operations"
                     , "operations/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 210
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 210
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1942,9 +1948,9 @@ void update_systemd_services_charts(
                     , "services.merged_io_ops_read"
                     , "Systemd Services Merged Disk Read Operations"
                     , "operations/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 220
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 220
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1963,9 +1969,9 @@ void update_systemd_services_charts(
                     , "services.merged_io_ops_write"
                     , "Systemd Services Merged Disk Write Operations"
                     , "operations/s"
-                    , "cgroup"
-                    , "systemd"
-                    , CHART_PRIORITY_SYSTEMD_SERVICES + 230
+                    , PLUGIN_CGROUPS_NAME
+                    , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
+                    , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD + 230
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -1983,7 +1989,7 @@ void update_systemd_services_charts(
 
         if(likely(do_cpu && cg->cpuacct_stat.updated)) {
             if(unlikely(!cg->rd_cpu))
-                cg->rd_cpu = rrddim_add(st_cpu, cg->chart_id, cg->chart_title, 100, hz, RRD_ALGORITHM_INCREMENTAL);
+                cg->rd_cpu = rrddim_add(st_cpu, cg->chart_id, cg->chart_title, 100, system_hz, RRD_ALGORITHM_INCREMENTAL);
 
             rrddim_set_by_pointer(st_cpu, cg->rd_cpu, cg->cpuacct_stat.user + cg->cpuacct_stat.system);
         }
@@ -2245,15 +2251,15 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.cpu"
                         , title
                         , "%"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
 
-                rrddim_add(cg->st_cpu, "user", NULL, 100, hz, RRD_ALGORITHM_INCREMENTAL);
-                rrddim_add(cg->st_cpu, "system", NULL, 100, hz, RRD_ALGORITHM_INCREMENTAL);
+                rrddim_add(cg->st_cpu, "user", NULL, 100, system_hz, RRD_ALGORITHM_INCREMENTAL);
+                rrddim_add(cg->st_cpu, "system", NULL, 100, system_hz, RRD_ALGORITHM_INCREMENTAL);
             }
             else
                 rrdset_next(cg->st_cpu);
@@ -2278,9 +2284,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.cpu_per_core"
                         , title
                         , "%"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 100
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 100
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -2312,9 +2318,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.mem"
                         , title
                         , "MB"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 210
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 210
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -2332,7 +2338,7 @@ void update_cgroup_charts(int update_every) {
                 rrdset_next(cg->st_mem);
 
             rrddim_set(cg->st_mem, "cache", cg->memory.cache);
-            rrddim_set(cg->st_mem, "rss", cg->memory.rss);
+            rrddim_set(cg->st_mem, "rss", (cg->memory.rss > cg->memory.rss_huge)?(cg->memory.rss - cg->memory.rss_huge):0);
 
             if(cg->memory.detailed_has_swap)
                 rrddim_set(cg->st_mem, "swap", cg->memory.swap);
@@ -2352,9 +2358,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.writeback"
                         , title
                         , "MB"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 300
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 300
                         , update_every
                         , RRDSET_TYPE_AREA
                 );
@@ -2384,9 +2390,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.mem_activity"
                         , title
                         , "MB/s"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 400
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 400
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -2412,9 +2418,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.pgfaults"
                         , title
                         , "MB/s"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 500
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 500
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -2442,9 +2448,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.mem_usage"
                         , title
                         , "MB"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 200
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 200
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -2472,9 +2478,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.mem_failcnt"
                         , title
                         , "count"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 250
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 250
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -2500,9 +2506,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.io"
                         , title
                         , "KB/s"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 1200
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 1200
                         , update_every
                         , RRDSET_TYPE_AREA
                 );
@@ -2530,9 +2536,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.serviced_ops"
                         , title
                         , "operations/s"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 1200
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 1200
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -2560,9 +2566,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.throttle_io"
                         , title
                         , "KB/s"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 1200
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 1200
                         , update_every
                         , RRDSET_TYPE_AREA
                 );
@@ -2590,9 +2596,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.throttle_serviced_ops"
                         , title
                         , "operations/s"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 1200
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 1200
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -2620,9 +2626,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.queued_ops"
                         , title
                         , "operations"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 2000
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 2000
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -2650,9 +2656,9 @@ void update_cgroup_charts(int update_every) {
                         , "cgroup.merged_ops"
                         , title
                         , "operations/s"
-                        , "cgroup"
-                        , "default"
-                        , CHART_PRIORITY_CONTAINERS + 2100
+                        , PLUGIN_CGROUPS_NAME
+                        , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                        , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 2100
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -2741,7 +2747,7 @@ void *cgroups_main(void *ptr) {
                         , NULL
                         , "NetData CGroups Plugin CPU usage"
                         , "milliseconds/s"
-                        , "cgroup"
+                        , PLUGIN_CGROUPS_NAME
                         , "stats"
                         , 132000
                         , cgroup_update_every
diff --git a/collectors/cgroups.plugin/sys_fs_cgroup.h b/collectors/cgroups.plugin/sys_fs_cgroup.h
new file mode 100644
index 000000000..09ce5e3fb
--- /dev/null
+++ b/collectors/cgroups.plugin/sys_fs_cgroup.h
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_SYS_FS_CGROUP_H
+#define NETDATA_SYS_FS_CGROUP_H 1
+
+#include "../../daemon/common.h"
+
+#if (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_CGROUPS \
+    { \
+        .name = "PLUGIN[cgroups]", \
+        .config_section = CONFIG_SECTION_PLUGINS, \
+        .config_name = "cgroups", \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = cgroups_main \
+    },
+
+extern void *cgroups_main(void *ptr);
+
+#include "../proc.plugin/plugin_proc.h"
+
+#else // (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_CGROUPS
+
+#endif // (TARGET_OS == OS_LINUX)
+
+#endif //NETDATA_SYS_FS_CGROUP_H
diff --git a/collectors/charts.d.plugin/Makefile.am b/collectors/charts.d.plugin/Makefile.am
new file mode 100644
index 000000000..e2e00258f
--- /dev/null
+++ b/collectors/charts.d.plugin/Makefile.am
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+CLEANFILES = \
+    charts.d.plugin \
+    $(NULL)
+
+include $(top_srcdir)/build/subst.inc
+SUFFIXES = .in
+
+dist_libconfig_DATA = \
+    charts.d.conf \
+    $(NULL)
+
+dist_plugins_SCRIPTS = \
+    charts.d.dryrun-helper.sh \
+    charts.d.plugin \
+    loopsleepms.sh.inc \
+    $(NULL)
+
+dist_noinst_DATA = \
+    charts.d.plugin.in \
+    README.md \
+    $(NULL)
+
+dist_charts_SCRIPTS = \
+    $(NULL)
+
+dist_charts_DATA = \
+    $(NULL)
+
+userchartsconfigdir=$(configdir)/charts.d
+dist_userchartsconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+chartsconfigdir=$(libconfigdir)/charts.d
+dist_chartsconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+include ap/Makefile.inc
+include apache/Makefile.inc
+include apcupsd/Makefile.inc
+include cpu_apps/Makefile.inc
+include cpufreq/Makefile.inc
+include example/Makefile.inc
+include exim/Makefile.inc
+include hddtemp/Makefile.inc
+include libreswan/Makefile.inc
+include load_average/Makefile.inc
+include mem_apps/Makefile.inc
+include mysql/Makefile.inc
+include nginx/Makefile.inc
+include nut/Makefile.inc
+include opensips/Makefile.inc
+include phpfpm/Makefile.inc
+include postfix/Makefile.inc
+include sensors/Makefile.inc
+include squid/Makefile.inc
+include tomcat/Makefile.inc
diff --git a/collectors/charts.d.plugin/Makefile.in b/collectors/charts.d.plugin/Makefile.in
new file mode 100644
index 000000000..23e2edebb
--- /dev/null
+++ b/collectors/charts.d.plugin/Makefile.in
@@ -0,0 +1,953 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
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+SUFFIXES = .in
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+    $(NULL)
+
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+    charts.d.plugin \
+    loopsleepms.sh.inc \
+    $(NULL)
+
+
+# do not install these files, but include them in the distribution
+
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+
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+
+# do not install these files, but include them in the distribution
+
+# do not install these files, but include them in the distribution
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA = charts.d.plugin.in README.md $(NULL) ap/README.md \
+	ap/Makefile.inc apache/README.md apache/Makefile.inc \
+	apcupsd/README.md apcupsd/Makefile.inc cpu_apps/README.md \
+	cpu_apps/Makefile.inc cpufreq/README.md cpufreq/Makefile.inc \
+	example/README.md example/Makefile.inc exim/README.md \
+	exim/Makefile.inc hddtemp/README.md hddtemp/Makefile.inc \
+	libreswan/README.md libreswan/Makefile.inc \
+	load_average/README.md load_average/Makefile.inc \
+	mem_apps/README.md mem_apps/Makefile.inc mysql/README.md \
+	mysql/Makefile.inc nginx/README.md nginx/Makefile.inc \
+	nut/README.md nut/Makefile.inc opensips/README.md \
+	opensips/Makefile.inc phpfpm/README.md phpfpm/Makefile.inc \
+	postfix/README.md postfix/Makefile.inc sensors/README.md \
+	sensors/Makefile.inc squid/README.md squid/Makefile.inc \
+	tomcat/README.md tomcat/Makefile.inc
+dist_charts_SCRIPTS = \
+    $(NULL)
+
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+dist_charts_DATA = $(NULL) ap/ap.chart.sh apache/apache.chart.sh \
+	apcupsd/apcupsd.chart.sh cpu_apps/cpu_apps.chart.sh \
+	cpufreq/cpufreq.chart.sh example/example.chart.sh \
+	exim/exim.chart.sh hddtemp/hddtemp.chart.sh \
+	libreswan/libreswan.chart.sh \
+	load_average/load_average.chart.sh mem_apps/mem_apps.chart.sh \
+	mysql/mysql.chart.sh nginx/nginx.chart.sh nut/nut.chart.sh \
+	opensips/opensips.chart.sh phpfpm/phpfpm.chart.sh \
+	postfix/postfix.chart.sh sensors/sensors.chart.sh \
+	squid/squid.chart.sh tomcat/tomcat.chart.sh
+userchartsconfigdir = $(configdir)/charts.d
+dist_userchartsconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+chartsconfigdir = $(libconfigdir)/charts.d
+dist_chartsconfig_DATA = $(top_srcdir)/installer/.keep $(NULL) \
+	ap/ap.conf apache/apache.conf apcupsd/apcupsd.conf \
+	cpu_apps/cpu_apps.conf cpufreq/cpufreq.conf \
+	example/example.conf exim/exim.conf hddtemp/hddtemp.conf \
+	libreswan/libreswan.conf load_average/load_average.conf \
+	mem_apps/mem_apps.conf mysql/mysql.conf nginx/nginx.conf \
+	nut/nut.conf opensips/opensips.conf phpfpm/phpfpm.conf \
+	postfix/postfix.conf sensors/sensors.conf squid/squid.conf \
+	tomcat/tomcat.conf
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .in
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/build/subst.inc $(srcdir)/ap/Makefile.inc $(srcdir)/apache/Makefile.inc $(srcdir)/apcupsd/Makefile.inc $(srcdir)/cpu_apps/Makefile.inc $(srcdir)/cpufreq/Makefile.inc $(srcdir)/example/Makefile.inc $(srcdir)/exim/Makefile.inc $(srcdir)/hddtemp/Makefile.inc $(srcdir)/libreswan/Makefile.inc $(srcdir)/load_average/Makefile.inc $(srcdir)/mem_apps/Makefile.inc $(srcdir)/mysql/Makefile.inc $(srcdir)/nginx/Makefile.inc $(srcdir)/nut/Makefile.inc $(srcdir)/opensips/Makefile.inc $(srcdir)/phpfpm/Makefile.inc $(srcdir)/postfix/Makefile.inc $(srcdir)/sensors/Makefile.inc $(srcdir)/squid/Makefile.inc $(srcdir)/tomcat/Makefile.inc $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/charts.d.plugin/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu collectors/charts.d.plugin/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+$(top_srcdir)/build/subst.inc $(srcdir)/ap/Makefile.inc $(srcdir)/apache/Makefile.inc $(srcdir)/apcupsd/Makefile.inc $(srcdir)/cpu_apps/Makefile.inc $(srcdir)/cpufreq/Makefile.inc $(srcdir)/example/Makefile.inc $(srcdir)/exim/Makefile.inc $(srcdir)/hddtemp/Makefile.inc $(srcdir)/libreswan/Makefile.inc $(srcdir)/load_average/Makefile.inc $(srcdir)/mem_apps/Makefile.inc $(srcdir)/mysql/Makefile.inc $(srcdir)/nginx/Makefile.inc $(srcdir)/nut/Makefile.inc $(srcdir)/opensips/Makefile.inc $(srcdir)/phpfpm/Makefile.inc $(srcdir)/postfix/Makefile.inc $(srcdir)/sensors/Makefile.inc $(srcdir)/squid/Makefile.inc $(srcdir)/tomcat/Makefile.inc:
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+install-dist_chartsSCRIPTS: $(dist_charts_SCRIPTS)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_charts_SCRIPTS)'; test -n "$(chartsdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(chartsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(chartsdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) { files[d] = files[d] " " $$1; \
+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(chartsdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(chartsdir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-dist_chartsSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_charts_SCRIPTS)'; test -n "$(chartsdir)" || exit 0; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	       sed -e 's,.*/,,;$(transform)'`; \
+	dir='$(DESTDIR)$(chartsdir)'; $(am__uninstall_files_from_dir)
+install-dist_pluginsSCRIPTS: $(dist_plugins_SCRIPTS)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pluginsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pluginsdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) { files[d] = files[d] " " $$1; \
+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(pluginsdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(pluginsdir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-dist_pluginsSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || exit 0; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	       sed -e 's,.*/,,;$(transform)'`; \
+	dir='$(DESTDIR)$(pluginsdir)'; $(am__uninstall_files_from_dir)
+install-dist_chartsDATA: $(dist_charts_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_charts_DATA)'; test -n "$(chartsdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(chartsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(chartsdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(chartsdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(chartsdir)" || exit $$?; \
+	done
+
+uninstall-dist_chartsDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_charts_DATA)'; test -n "$(chartsdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(chartsdir)'; $(am__uninstall_files_from_dir)
+install-dist_chartsconfigDATA: $(dist_chartsconfig_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_chartsconfig_DATA)'; test -n "$(chartsconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(chartsconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(chartsconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(chartsconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(chartsconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_chartsconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_chartsconfig_DATA)'; test -n "$(chartsconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(chartsconfigdir)'; $(am__uninstall_files_from_dir)
+install-dist_libconfigDATA: $(dist_libconfig_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(libconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(libconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_libconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(libconfigdir)'; $(am__uninstall_files_from_dir)
+install-dist_userchartsconfigDATA: $(dist_userchartsconfig_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_userchartsconfig_DATA)'; test -n "$(userchartsconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(userchartsconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(userchartsconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(userchartsconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(userchartsconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_userchartsconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_userchartsconfig_DATA)'; test -n "$(userchartsconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(userchartsconfigdir)'; $(am__uninstall_files_from_dir)
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(SCRIPTS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(chartsdir)" "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(chartsdir)" "$(DESTDIR)$(chartsconfigdir)" "$(DESTDIR)$(libconfigdir)" "$(DESTDIR)$(userchartsconfigdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-dist_chartsDATA install-dist_chartsSCRIPTS \
+	install-dist_chartsconfigDATA install-dist_libconfigDATA \
+	install-dist_pluginsSCRIPTS install-dist_userchartsconfigDATA
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-dist_chartsDATA uninstall-dist_chartsSCRIPTS \
+	uninstall-dist_chartsconfigDATA uninstall-dist_libconfigDATA \
+	uninstall-dist_pluginsSCRIPTS \
+	uninstall-dist_userchartsconfigDATA
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dist_chartsDATA \
+	install-dist_chartsSCRIPTS install-dist_chartsconfigDATA \
+	install-dist_libconfigDATA install-dist_pluginsSCRIPTS \
+	install-dist_userchartsconfigDATA install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am \
+	uninstall-dist_chartsDATA uninstall-dist_chartsSCRIPTS \
+	uninstall-dist_chartsconfigDATA uninstall-dist_libconfigDATA \
+	uninstall-dist_pluginsSCRIPTS \
+	uninstall-dist_userchartsconfigDATA
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
+		-e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
+		-e 's#[@]pythondir_POST@#$(pythondir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
+		$< > $@.tmp; then \
+		mv "$@.tmp" "$@"; \
+	else \
+		rm -f "$@.tmp"; \
+		false; \
+	fi
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/charts.d.plugin/README.md b/collectors/charts.d.plugin/README.md
new file mode 100644
index 000000000..b224bffe3
--- /dev/null
+++ b/collectors/charts.d.plugin/README.md
@@ -0,0 +1,193 @@
+# charts.d.plugin
+
+`charts.d.plugin` is a netdata external plugin. It is an **orchestrator** for data collection modules written in `BASH` v4+.
+
+1. It runs as an independent process `ps fax` shows it
+2. It is started and stopped automatically by netdata
+3. It communicates with netdata via a unidirectional pipe (sending data to the netdata daemon)
+4. Supports any number of data collection **modules**
+
+`charts.d.plugin` has been designed so that the actual script that will do data collection will be permanently in
+memory, collecting data with as little overheads as possible
+(i.e. initialize once, repeatedly collect values with minimal overhead).
+
+`charts.d.plugin` looks for scripts in `/usr/lib/netdata/charts.d`.
+The scripts should have the filename suffix: `.chart.sh`.
+
+## Configuration
+
+`charts.d.plugin` itself can be configured using the configuration file `/etc/netdata/charts.d.conf`
+(to edit it on your system run `/etc/netdata/edit-config charts.d.conf`). This file is also a BASH script.
+
+In this file, you can place statements like this:
+
+```
+enable_all_charts="yes"
+X="yes"
+Y="no"
+```
+
+where `X` and `Y` are the names of individual charts.d collector scripts.
+When set to `yes`, charts.d will evaluate the collector script (see below).
+When set to `no`, charts.d will ignore the collector script.
+
+The variable `enable_all_charts` sets the default enable/disable state for all charts.
+
+## A charts.d module
+
+A `charts.d.plugin` module is a BASH script defining a few functions.
+
+For a module called `X`, the following criteria must be met:
+
+1. The module script must be called `X.chart.sh` and placed in `/usr/libexec/netdata/charts.d`.
+
+2. If the module needs a configuration, it should be called `X.conf` and placed in `/etc/netdata/charts.d`.
+   The configuration file `X.conf` is also a BASH script itself.
+   To edit the default files supplied by netdata run `/etc/netdata/edit-config charts.d/X.conf`,
+   where `X` is the name of the module.
+
+3. All functions and global variables defined in the script and its configuration, must begin with `X_`.
+
+4. The following functions must be defined:
+
+   - `X_check()` - returns 0 or 1 depending on whether the module is able to run or not
+      (following the standard Linux command line return codes: 0 = OK, the collector can operate and 1 = FAILED,
+      the collector cannot be used).
+
+   - `X_create()` - creates the netdata charts, following the standard netdata plugin guides as described in
+      **[External Plugins](../plugins.d/)** (commands `CHART` and `DIMENSION`).
+      The return value does matter: 0 = OK, 1 = FAILED.
+
+   - `X_update()` - collects the values for the defined charts, following the standard netdata plugin guides
+      as described in **[External Plugins](../plugins.d/)** (commands `BEGIN`, `SET`, `END`).
+      The return value also matters: 0 = OK, 1 = FAILED.
+
+5. The following global variables are available to be set:
+   - `X_update_every` - is the data collection frequency for the module script, in seconds.
+
+The module script may use more functions or variables. But all of them must begin with `X_`.
+
+The standard netdata plugin variables are also available (check **[External Plugins](../plugins.d/)**). 
+
+### X_check()
+
+The purpose of the BASH function `X_check()` is to check if the module can collect data (or check its config).
+
+For example, if the module is about monitoring a local mysql database, the `X_check()` function may attempt to
+connect to a local mysql database to find out if it can read the values it needs.
+
+`X_check()` is run only once for the lifetime of the module.
+
+### X_create()
+
+The purpose of the BASH function `X_create()` is to create the charts and dimensions using the standard netdata
+plugin guides (**[External Plugins](../plugins.d/)**).
+
+`X_create()` will be called just once and only after `X_check()` was successful.
+You can however call it yourself when there is need for it (for example to add a new dimension to an existing chart).
+
+A non-zero return value will disable the collector.
+
+### X_update()
+
+`X_update()` will be called repeatedly every `X_update_every` seconds, to collect new values and send them to netdata,
+following the netdata plugin guides (**[External Plugins](../plugins.d/)**).
+
+The function will be called with one parameter: microseconds since the last time it was run. This value should be
+appended to the `BEGIN` statement of every chart updated by the collector script.
+
+A non-zero return value will disable the collector.
+
+### Useful functions charts.d provides
+
+Module scripts can use the following charts.d functions:
+
+#### require_cmd command
+
+`require_cmd()` will check if a command is available in the running system.
+
+For example, your `X_check()` function may use it like this:
+
+```sh
+mysql_check() {
+    require_cmd mysql || return 1
+    return 0
+}
+```
+
+Using the above, if the command `mysql` is not available in the system, the `mysql` module will be disabled.
+
+#### fixid "string"
+
+`fixid()` will get a string and return a properly formatted id for a chart or dimension.
+
+This is an expensive function that should not be used in `X_update()`.
+You can keep the generated id in a BASH associative array to have the values availables in `X_update()`, like this:
+
+```sh
+declare -A X_ids=()
+X_create() {
+   local name="a very bad name for id"
+
+   X_ids[$name]="$(fixid "$name")"
+}
+
+X_update() {
+   local microseconds="$1"
+
+   ...
+   local name="a very bad name for id"
+   ...
+
+   echo "BEGIN ${X_ids[$name]} $microseconds"
+   ...
+}
+```
+
+### Debugging your collectors
+
+You can run `charts.d.plugin` by hand with something like this:
+
+```sh
+# become user netdata
+sudo su -s /bin/sh netdata
+
+# run the plugin in debug mode
+/usr/libexec/netdata/plugins.d/charts.d.plugin debug 1 X Y Z
+```
+
+Charts.d will run in `debug` mode, with an update frequency of `1`, evaluating only the collector scripts
+`X`, `Y` and `Z`. You can define zero or more module scripts. If none is defined, charts.d will evaluate all
+module scripts available.
+
+Keep in mind that if your configs are not in `/etc/netdata`, you should do the following before running
+`charts.d.plugin`:
+
+```sh
+export NETDATA_USER_CONFIG_DIR="/path/to/etc/netdata"
+```
+
+Also, remember that netdata runs `chart.d.plugin` as user `netdata` (or any other user netdata is configured to run as).
+
+
+## Running multiple instances of charts.d.plugin
+
+`charts.d.plugin` will call the `X_update()` function one after another. This means that a delay in collector `X`
+will also delay the collection of `Y` and `Z`.
+
+You can have multiple `charts.d.plugin` running to overcome this problem.
+
+This is what you need to do:
+
+1. Decide a new name for the new charts.d instance: example `charts2.d`.
+
+2. Create/edit the files `/etc/netdata/charts.d.conf` and `/etc/netdata/charts2.d.conf` and enable / disable the
+   module you want each to run. Remember to set `enable_all_charts="no"` to both of them, and enable the individual
+   modules for each.
+   
+3. link `/usr/libexec/netdata/plugins.d/charts.d.plugin` to `/usr/libexec/netdata/plugins.d/charts2.d.plugin`.
+   Netdata will spawn a new charts.d process.
+
+Execute the above in this order, since netdata will (by default) attempt to start new plugins soon after they are
+created in `/usr/libexec/netdata/plugins.d/`.
+
diff --git a/collectors/charts.d.plugin/ap/Makefile.inc b/collectors/charts.d.plugin/ap/Makefile.inc
new file mode 100644
index 000000000..a2dd375ac
--- /dev/null
+++ b/collectors/charts.d.plugin/ap/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += ap/ap.chart.sh
+dist_chartsconfig_DATA += ap/ap.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += ap/README.md ap/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/ap/README.md b/collectors/charts.d.plugin/ap/README.md
new file mode 100644
index 000000000..eb4e80707
--- /dev/null
+++ b/collectors/charts.d.plugin/ap/README.md
@@ -0,0 +1,84 @@
+# Access Point Plugin (ap)
+
+The `ap` collector visualizes data related to access points.
+
+## Example netdata charts
+
+![image](https://cloud.githubusercontent.com/assets/2662304/12377654/9f566e88-bd2d-11e5-855a-e0ba96b8fd98.png)
+
+## How it works
+
+It does the following:
+
+1. Runs `iw dev` searching for interfaces that have `type AP`.
+
+   From the same output it collects the SSIDs each AP supports by looking for lines `ssid NAME`.
+
+   Example:
+```sh
+# iw dev
+phy#0
+        Interface wlan0
+                ifindex 3
+                wdev 0x1
+                addr 7c:dd:90:77:34:2a
+                ssid TSAOUSIS
+                type AP
+                channel 7 (2442 MHz), width: 20 MHz, center1: 2442 MHz
+```
+
+
+2. For each interface found, it runs `iw INTERFACE station dump`.
+
+   From the output is collects:
+
+   - rx/tx bytes
+   - rx/tx packets
+   - tx retries
+   - tx failed
+   - signal strength
+   - rx/tx bitrate
+   - expected throughput
+
+   Example:
+
+```sh
+# iw wlan0 station dump
+Station 40:b8:37:5a:ed:5e (on wlan0)
+        inactive time:  910 ms
+        rx bytes:       15588897
+        rx packets:     127772
+        tx bytes:       52257763
+        tx packets:     95802
+        tx retries:     2162
+        tx failed:      28
+        signal:         -43 dBm
+        signal avg:     -43 dBm
+        tx bitrate:     65.0 MBit/s MCS 7
+        rx bitrate:     1.0 MBit/s
+        expected throughput:    32.125Mbps
+        authorized:     yes
+        authenticated:  yes
+        preamble:       long
+        WMM/WME:        yes
+        MFP:            no
+        TDLS peer:      no
+```
+
+3. For each interface found, it creates 6 charts:
+
+   - Number of Connected clients
+   - Bandwidth for all clients
+   - Packets for all clients
+   - Transmit Issues for all clients
+   - Average Signal among all clients
+   - Average Bitrate (including average expected throughput) among all clients
+
+## Configuration
+
+You can only set `ap_update_every=NUMBER` to `/etc/netdata/charts.d/ap.conf`, to give the data collection frequency.
+To edit this file on your system run `/etc/netdata/edit-config charts.d/ap.conf`.
+
+## Auto-detection
+
+The plugin is able to auto-detect if you are running access points on your linux box.
diff --git a/charts.d/ap.chart.sh b/collectors/charts.d.plugin/ap/ap.chart.sh
index ce2eefc9f..ccc36120c 100644
--- a/charts.d/ap.chart.sh
+++ b/collectors/charts.d.plugin/ap/ap.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 # _update_every is a special variable - it holds the number of seconds
@@ -16,8 +17,8 @@ declare -A ap_devs=()
 # _check is called once, to find out if this chart should be enabled or not
 ap_check() {
 	require_cmd iw || return 1
-
-	local ev=$(run iw dev | awk '
+	local ev
+	ev=$(run iw dev | awk '
 		BEGIN {
 			i = "";
 			ssid = "";
@@ -102,7 +103,7 @@ ap_update() {
 	do
 	    echo
 	    echo "DEVICE ${dev}"
-		iw ${dev} station dump
+		iw "${dev}" station dump
 	done | awk "
         function zero_data() {
             dev = \"\";
diff --git a/conf.d/charts.d/ap.conf b/collectors/charts.d.plugin/ap/ap.conf
index 38fc157ce..38fc157ce 100644
--- a/conf.d/charts.d/ap.conf
+++ b/collectors/charts.d.plugin/ap/ap.conf
diff --git a/collectors/charts.d.plugin/apache/Makefile.inc b/collectors/charts.d.plugin/apache/Makefile.inc
new file mode 100644
index 000000000..4b360eae0
--- /dev/null
+++ b/collectors/charts.d.plugin/apache/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += apache/apache.chart.sh
+dist_chartsconfig_DATA += apache/apache.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += apache/README.md apache/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/apache/README.md b/collectors/charts.d.plugin/apache/README.md
new file mode 100644
index 000000000..890cee984
--- /dev/null
+++ b/collectors/charts.d.plugin/apache/README.md
@@ -0,0 +1,127 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
+
+---
+
+# Apache Plugin (apache)
+
+The `apache` collector visualizes key performance data for an apache web server.
+
+## Example netdata charts
+
+For apache 2.2:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/12530273/421c4d14-c1e2-11e5-9fb6-ca6d6dd3b1dd.png)
+
+For apache 2.4:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/12530376/29ec26de-c1e6-11e5-9af1-e48aaf781795.png)
+
+## How it works
+
+It runs `curl "http://apache.host/server-status?auto` to fetch the current status of apache.
+
+It has been tested with apache 2.2 and apache 2.4. The latter also provides connections information (total and break down by status).
+
+Apache 2.2 response:
+
+```sh
+$ curl "http://127.0.0.1/server-status?auto"
+Total Accesses: 80057
+Total kBytes: 223017
+CPULoad: .018287
+Uptime: 64472
+ReqPerSec: 1.24173
+BytesPerSec: 3542.15
+BytesPerReq: 2852.59
+BusyWorkers: 1
+IdleWorkers: 49
+Scoreboard: _________________________......................................._W_______________________.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
+```
+
+Apache 2.4 response:
+
+```sh
+$ curl "http://127.0.0.1/server-status?auto"
+127.0.0.1
+ServerVersion: Apache/2.4.18 (Unix)
+ServerMPM: event
+Server Built: Dec 14 2015 08:05:54
+CurrentTime: Saturday, 23-Jan-2016 14:42:06 EET
+RestartTime: Saturday, 23-Jan-2016 04:57:13 EET
+ParentServerConfigGeneration: 2
+ParentServerMPMGeneration: 1
+ServerUptimeSeconds: 35092
+ServerUptime: 9 hours 44 minutes 52 seconds
+Load1: 0.32
+Load5: 0.32
+Load15: 0.27
+Total Accesses: 32403
+Total kBytes: 34464
+CPUUser: 30.37
+CPUSystem: 29.55
+CPUChildrenUser: 0
+CPUChildrenSystem: 0
+CPULoad: .170751
+Uptime: 35092
+ReqPerSec: .923373
+BytesPerSec: 1005.67
+BytesPerReq: 1089.13
+BusyWorkers: 1
+IdleWorkers: 99
+ConnsTotal: 0
+ConnsAsyncWriting: 0
+ConnsAsyncKeepAlive: 0
+ConnsAsyncClosing: 0
+Scoreboard: __________________________________________________________________________________________W_________............................................................................................................................................................................................................................................................................................................
+```
+
+From the apache status output it collects:
+
+ - total accesses (incremental value, rendered as requests/s)
+ - total bandwidth (incremental value, rendered as bandwidth/s)
+ - requests per second (this appears to be calculated by apache as an average for its lifetime, while the one calculated by netdata using the total accesses counter is real-time)
+ - bytes per second (average for the lifetime of the apache server)
+ - bytes per request (average for the lifetime of the apache server)
+ - workers by status (`busy` and `idle`)
+ - total connections (currently active connections - offered by apache 2.4+)
+ - async connections per status (`keepalive`, `writing`, `closing` - offered by apache 2.4+)
+
+## Configuration
+
+The configuration is stored in `/etc/netdata/charts.d/apache.conf`.
+To edit this file on your system run `/etc/netdata/edit-config charts.d/apache.conf`.
+
+The internal default is:
+
+```sh
+# the URL your apache server is responding with mod_status information.
+apache_url="http://127.0.0.1:80/server-status?auto"
+
+# use this to set custom curl options you may need
+apache_curl_opts=
+
+# set this to a NUMBER to overwrite the update frequency
+# it is in seconds
+apache_update_every=
+```
+
+The default `apache_update_every` is configured in netdata.
+
+## Auto-detection
+
+If you have configured your apache server to offer server-status information on localhost clients, the defaults should work fine.
+
+## Apache Configuration
+
+Apache configuration differs between distributions. Please check your distribution's documentation for information on enabling apache's `mod_status` module.
+
+If you are able to run successfully, by hand this command:
+
+```sh
+curl "http://127.0.0.1:80/server-status?auto"
+```
+
+netdata will be able to do it too.
+
+Notice: You may need to have the default `000-default.conf ` website enabled in order for the status mod to work.
diff --git a/charts.d/apache.chart.sh b/collectors/charts.d.plugin/apache/apache.chart.sh
index a8ac08014..95876432f 100644
--- a/charts.d/apache.chart.sh
+++ b/collectors/charts.d.plugin/apache/apache.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 # the URL to download apache status info
@@ -82,12 +83,11 @@ apache_detect() {
 	[ -z "${apache_key_idleworkers}" ] && error "missing 'IdleWorkers' from apache server: ${*}" && return 1
 	[ -z "${apache_key_scoreboard}"  ] && error "missing 'Scoreboard' from apache server: ${*}" && return 1
 
-	if [ ! -z "${apache_key_connstotal}" \
-		-a ! -z "${apache_key_connsasyncwriting}" \
-		-a ! -z "${apache_key_connsasynckeepalive}" \
-		-a ! -z "${apache_key_connsasyncclosing}" \
-		]
-		then
+	if [ ! -z "${apache_key_connstotal}" ] && \
+	   [ ! -z "${apache_key_connsasyncwriting}" ] && \
+	   [ ! -z "${apache_key_connsasynckeepalive}" ] && \
+	   [ ! -z "${apache_key_connsasyncclosing}" ]
+	then
 		apache_has_conns=1
 	else
 		apache_has_conns=0
@@ -98,16 +98,20 @@ apache_detect() {
 
 apache_get() {
 	local oIFS="${IFS}" ret
+	# shellcheck disable=2207
 	IFS=$':\n' apache_response=($(run curl -Ss ${apache_curl_opts} "${apache_url}"))
 	ret=$?
 	IFS="${oIFS}"
 
-	[ $ret -ne 0 -o "${#apache_response[@]}" -eq 0 ] && return 1
+	if [ $ret -ne 0 ] || [ "${#apache_response[@]}" -eq 0 ]
+	then
+		return 1
+	fi
 
 	# the last line on the apache output is "Scoreboard"
 	# we use this label to detect that the output has a new word count
-	if [ ${apache_keys_detected} -eq 0 -o "${apache_response[${apache_key_scoreboard}]}" != "Scoreboard" ]
-		then
+	if [ ${apache_keys_detected} -eq 0 ] || [ "${apache_response[${apache_key_scoreboard}]}" != "Scoreboard" ]
+	then
 		apache_detect "${apache_response[@]}" || return 1
 		apache_keys_detected=1
 	fi
@@ -127,21 +131,20 @@ apache_get() {
 	apache_busyworkers="${apache_response[${apache_key_busyworkers}]}"
 	apache_idleworkers="${apache_response[${apache_key_idleworkers}]}"
 
-	if [ -z "${apache_accesses}" \
-		-o -z "${apache_kbytes}" \
-		-o -z "${apache_reqpersec}" \
-		-o -z "${apache_bytespersec}" \
-		-o -z "${apache_bytesperreq}" \
-		-o -z "${apache_busyworkers}" \
-		-o -z "${apache_idleworkers}" \
-		]
-		then
+	if [ -z "${apache_accesses}" ] || \
+	   [ -z "${apache_kbytes}" ] || \
+	   [ -z "${apache_reqpersec}" ] || \
+	   [ -z "${apache_bytespersec}" ] || \
+	   [ -z "${apache_bytesperreq}" ] || \
+	   [ -z "${apache_busyworkers}" ]
+	   [ -z "${apache_idleworkers}" ]
+	then
 		error "empty values got from apache server: ${apache_response[*]}"
 		return 1
 	fi
 
 	if [ ${apache_has_conns} -eq 1 ]
-		then
+	then
 		apache_connstotal="${apache_response[${apache_key_connstotal}]}"
 		apache_connsasyncwriting="${apache_response[${apache_key_connsasyncwriting}]}"
 		apache_connsasynckeepalive="${apache_response[${apache_key_connsasynckeepalive}]}"
@@ -155,8 +158,10 @@ apache_get() {
 apache_check() {
 
 	apache_get
+	# shellcheck disable=2181
 	if [ $? -ne 0 ]
-		then
+	then
+		# shellcheck disable=2154
 		error "cannot find stub_status on URL '${apache_url}'. Please set apache_url='http://apache.server:80/server-status?auto' in $confd/apache.conf"
 		return 1
 	fi
@@ -187,7 +192,7 @@ DIMENSION sent '' incremental 8 1
 EOF
 
 	if [ ${apache_has_conns} -eq 1 ]
-		then
+	then
 		cat <<EOF2
 CHART apache_local.connections '' "apache Connections" "connections" connections apache.connections line $((apache_priority + 2)) $apache_update_every
 DIMENSION connections '' absolute 1 1
@@ -203,7 +208,6 @@ EOF2
 
 # _update is called continuously, to collect the values
 apache_update() {
-	local reqs net
 	# the first argument to this function is the microseconds since last update
 	# pass this parameter to the BEGIN statement (see bellow).
 
@@ -237,7 +241,7 @@ END
 VALUESEOF
 
 	if [ ${apache_has_conns} -eq 1 ]
-		then
+	then
 	cat <<VALUESEOF2
 BEGIN apache_local.connections $1
 SET connections = $((apache_connstotal))
diff --git a/conf.d/charts.d/apache.conf b/collectors/charts.d.plugin/apache/apache.conf
index 50914cf32..50914cf32 100644
--- a/conf.d/charts.d/apache.conf
+++ b/collectors/charts.d.plugin/apache/apache.conf
diff --git a/collectors/charts.d.plugin/apcupsd/Makefile.inc b/collectors/charts.d.plugin/apcupsd/Makefile.inc
new file mode 100644
index 000000000..19cb9cad7
--- /dev/null
+++ b/collectors/charts.d.plugin/apcupsd/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += apcupsd/apcupsd.chart.sh
+dist_chartsconfig_DATA += apcupsd/apcupsd.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += apcupsd/README.md apcupsd/Makefile.inc
+
diff --git a/python.d/python_modules/bases/FrameworkServices/__init__.py b/collectors/charts.d.plugin/apcupsd/README.md
index e69de29bb..e69de29bb 100644
--- a/python.d/python_modules/bases/FrameworkServices/__init__.py
+++ b/collectors/charts.d.plugin/apcupsd/README.md
diff --git a/charts.d/apcupsd.chart.sh b/collectors/charts.d.plugin/apcupsd/apcupsd.chart.sh
index 9878fd36c..e26ef566a 100644
--- a/charts.d/apcupsd.chart.sh
+++ b/collectors/charts.d.plugin/apcupsd/apcupsd.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 apcupsd_ip=
@@ -43,11 +44,12 @@ apcupsd_check() {
     for host in "${!apcupsd_sources[@]}"
     do
         run apcupsd_get "${apcupsd_sources[${host}]}" >/dev/null
+        # shellcheck disable=2181
         if [ $? -ne 0 ]
         then
             error "cannot get information for apcupsd server ${host} on ${apcupsd_sources[${host}]}."
             failed=$((failed + 1))
-        elif [ $(apcupsd_get "${apcupsd_sources[${host}]}" | awk '/^STATUS.*/{ print $3 }') != "ONLINE" ]
+        elif [ "$(apcupsd_get "${apcupsd_sources[${host}]}" | awk '/^STATUS.*/{ print $3 }')" != "ONLINE" ]
         then
             error "APC UPS ${host} on ${apcupsd_sources[${host}]} is not online."
             failed=$((failed + 1))
@@ -183,6 +185,7 @@ END {
 	print \"SET time = \" time;
 	print \"END\"
 }"
+	# shellcheck disable=SC2181
         if [ $? -ne 0 ]
         then
             failed=$((failed + 1))
diff --git a/conf.d/charts.d/apcupsd.conf b/collectors/charts.d.plugin/apcupsd/apcupsd.conf
index 679c0d61b..679c0d61b 100644
--- a/conf.d/charts.d/apcupsd.conf
+++ b/collectors/charts.d.plugin/apcupsd/apcupsd.conf
diff --git a/conf.d/charts.d.conf b/collectors/charts.d.plugin/charts.d.conf
index acb2a6fae..acb2a6fae 100644
--- a/conf.d/charts.d.conf
+++ b/collectors/charts.d.plugin/charts.d.conf
diff --git a/plugins.d/charts.d.dryrun-helper.sh b/collectors/charts.d.plugin/charts.d.dryrun-helper.sh
index 8142f9882..67496c1bd 100755
--- a/plugins.d/charts.d.dryrun-helper.sh
+++ b/collectors/charts.d.plugin/charts.d.dryrun-helper.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# shellcheck disable=SC2181
 
 # will stop the script for any error
 set -e
@@ -10,8 +13,8 @@ conf="$3"
 
 can_diff=1
 
-tmp1="`mktemp`"
-tmp2="`mktemp`"
+tmp1="$(mktemp)"
+tmp2="$(mktemp)"
 
 myset() {
     set | grep -v "^_=" | grep -v "^PIPESTATUS=" | grep -v "^BASH_LINENO="
@@ -36,6 +39,7 @@ myset >"$tmp1"
 # include the plugin and its config
 if [ -f "$conf" ]
 then
+    # shellcheck source=/dev/null
     . "$conf"
     if [ $? -ne 0 ]
     then
@@ -45,6 +49,7 @@ then
     fi
 fi
 
+# shellcheck source=/dev/null
 . "$chart"
 if [ $? -ne 0 ]
 then
diff --git a/plugins.d/charts.d.plugin b/collectors/charts.d.plugin/charts.d.plugin
index 9bd03fd47..1c6e8c5c9 100755..100644
--- a/plugins.d/charts.d.plugin
+++ b/collectors/charts.d.plugin/charts.d.plugin
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
@@ -116,14 +117,15 @@ info "started from '$PROGRAM_FILE' with options: $*"
 # netdata exposes a few environment variables for us
 
 [ -z "${NETDATA_PLUGINS_DIR}" ] && NETDATA_PLUGINS_DIR="$(dirname "${0}")"
-[ -z "${NETDATA_CONFIG_DIR}" ] && NETDATA_CONFIG_DIR="$(dirname "${0}")/../../../../etc/netdata"
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="/usr/local/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/local/lib/netdata/conf.d"
 
 pluginsd="${NETDATA_PLUGINS_DIR}"
-confd="${NETDATA_CONFIG_DIR}"
+stockconfd="${NETDATA_STOCK_CONFIG_DIR}/${PROGRAM_NAME}"
+userconfd="${NETDATA_USER_CONFIG_DIR}/${PROGRAM_NAME}"
+olduserconfd="${NETDATA_USER_CONFIG_DIR}"
 chartsd="$pluginsd/../charts.d"
 
-myconfig="$confd/$PROGRAM_NAME.conf"
-
 minimum_update_frequency="${NETDATA_UPDATE_EVERY-1}"
 update_every=${minimum_update_frequency}    # this will be overwritten by the command line
 
@@ -230,22 +232,33 @@ mysleep="sleep"
 # if found and included, this file overwrites loopsleepms()
 # and current_time_ms() with a high resolution timer function
 # for precise looping.
-. "$pluginsd/loopsleepms.sh.inc"
+source "$pluginsd/loopsleepms.sh.inc"
+[ $? -ne 0 ] && error "Failed to load '$pluginsd/loopsleepms.sh.inc'."
 
 # -----------------------------------------------------------------------------
 # load my configuration
 
-if [ -f "$myconfig" ]
+for myconfig in "${NETDATA_STOCK_CONFIG_DIR}/${PROGRAM_NAME}.conf" "${NETDATA_USER_CONFIG_DIR}/${PROGRAM_NAME}.conf"
+do
+    if [ -f "$myconfig" ]
     then
-    . "$myconfig"
-    [ $? -ne 0 ] && fatal "cannot load $myconfig"
+        source "$myconfig"
+        if [ $? -ne 0 ]
+        then
+            error "Config file '$myconfig' loaded with errors."
+        else
+            info "Configuration file '$myconfig' loaded."
+        fi
+    else
+        warning "Configuration file '$myconfig' not found."
+    fi
+done
+
+# make sure time_divisor is right
+time_divisor=$((time_divisor))
+[ $time_divisor -lt 10 ] && time_divisor=10
+[ $time_divisor -gt 100 ] && time_divisor=100
 
-    time_divisor=$((time_divisor))
-    [ $time_divisor -lt 10 ] && time_divisor=10
-    [ $time_divisor -gt 100 ] && time_divisor=100
-else
-    info "configuration file '$myconfig' not found. Using defaults."
-fi
 
 # we check for the timeout command, after we load our
 # configuration, so that the user may overwrite the
@@ -296,7 +309,7 @@ run() {
         {
             printf "$(logdate): ${PROGRAM_NAME}: ${status}: ${MODULE_NAME}: command '"
             printf "%q " "${@}"
-            printf "' failed:\n --- BEGIN TRACE ---\n"
+            printf "' failed with code ${ret}:\n --- BEGIN TRACE ---\n"
             cat "${TMP_DIR}/run.${pid}"
             printf " --- END TRACE ---\n"
         } >&2
@@ -411,7 +424,7 @@ all_enabled_charts() {
 
         if [ ! "${enabled}" = "${required}" ]
         then
-            info "is disabled. Add a line with $chart=$required in $myconfig to enable it (or remove the line that disables it)."
+            info "is disabled. Add a line with $chart=$required in '${NETDATA_USER_CONFIG_DIR}/${PROGRAM_NAME}.conf' to enable it (or remove the line that disables it)."
         else
             debug "is enabled for auto-detection."
             local charts="$charts $chart"
@@ -447,18 +460,18 @@ all_enabled_charts() {
         fi
 
         # check its config
-        #if [ -f "$confd/$chart.conf" ]
+        #if [ -f "$userconfd/$chart.conf" ]
         #then
-        #   if [ ! -z "$( cat "$confd/$chart.conf" | sed "s/^ \+//g" | grep -v "^$" | grep -v "^#" | grep -v "^$chart$charts_undescore" )" ]
+        #   if [ ! -z "$( cat "$userconfd/$chart.conf" | sed "s/^ \+//g" | grep -v "^$" | grep -v "^#" | grep -v "^$chart$charts_undescore" )" ]
         #   then
-        #       error "module's $chart config $confd/$chart.conf should only have lines starting with $chart$charts_undescore . Disabling it."
+        #       error "module's $chart config $userconfd/$chart.conf should only have lines starting with $chart$charts_undescore . Disabling it."
         #       continue
         #   fi
         #fi
 
         #if [ $dryrunner -eq 1 ]
         #   then
-        #   "$pluginsd/charts.d.dryrun-helper.sh" "$chart" "$chartsd/$chart.chart.sh" "$confd/$chart.conf" >/dev/null
+        #   "$pluginsd/charts.d.dryrun-helper.sh" "$chart" "$chartsd/$chart.chart.sh" "$userconfd/$chart.conf" >/dev/null
         #   if [ $? -ne 0 ]
         #   then
         #       error "module's $chart did not pass the dry run check. This means it uses global variables not starting with $chart. Disabling it."
@@ -486,18 +499,35 @@ do
 
     debug "loading module: '$chartsd/$chart.chart.sh'"
 
-    . "$chartsd/$chart.chart.sh"
+    source "$chartsd/$chart.chart.sh"
+    [ $? -ne 0 ] && warning "Module '$chartsd/$chart.chart.sh' loaded with errors."
 
-    if [ -f "$confd/$PROGRAM_NAME/$chart.conf" ]
+    # first load the stock config
+    if [ -f "$stockconfd/$chart.conf" ]
     then
-        debug "loading module configuration: '$confd/$PROGRAM_NAME/$chart.conf'"
-        . "$confd/$PROGRAM_NAME/$chart.conf"
-    elif [ -f "$confd/$chart.conf" ]
+        debug "loading module configuration: '$stockconfd/$chart.conf'"
+        source "$stockconfd/$chart.conf"
+        [ $? -ne 0 ] && warning "Config file '$stockconfd/$chart.conf' loaded with errors."
+    else
+        debug "not found module configuration: '$stockconfd/$chart.conf'"
+    fi
+
+    # then load the user config (it overwrites the stock)
+    if [ -f "$userconfd/$chart.conf" ]
     then
-        debug "loading module configuration: '$confd/$chart.conf'"
-        . "$confd/$chart.conf"
+        debug "loading module configuration: '$userconfd/$chart.conf'"
+        source "$userconfd/$chart.conf"
+        [ $? -ne 0 ] && warning "Config file '$userconfd/$chart.conf' loaded with errors."
     else
-        warning "configuration file '$confd/$PROGRAM_NAME/$chart.conf' not found. Using defaults."
+        debug "not found module configuration: '$userconfd/$chart.conf'"
+
+        if [ -f "$olduserconfd/$chart.conf" ]
+        then
+            # support for very old netdata that had the charts.d module configs in /etc/netdata
+            info "loading module configuration from obsolete location: '$olduserconfd/$chart.conf'"
+            source "$olduserconfd/$chart.conf"
+            [ $? -ne 0 ] && warning "Config file '$olduserconfd/$chart.conf' loaded with errors."
+        fi
     fi
 
     eval "dt=\$$chart$suffix_update_every"
diff --git a/collectors/charts.d.plugin/charts.d.plugin.in b/collectors/charts.d.plugin/charts.d.plugin.in
new file mode 100755
index 000000000..3477894d8
--- /dev/null
+++ b/collectors/charts.d.plugin/charts.d.plugin.in
@@ -0,0 +1,743 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# GPL v3+
+#
+# charts.d.plugin allows easy development of BASH plugins
+#
+# if you need to run parallel charts.d processes, link this file to a different name
+# in the same directory, with a .plugin suffix and netdata will start both of them,
+# each will have a different config file and modules configuration directory.
+#
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin"
+
+PROGRAM_FILE="$0"
+PROGRAM_NAME="$(basename $0)"
+PROGRAM_NAME="${PROGRAM_NAME/.plugin}"
+MODULE_NAME="main"
+
+# -----------------------------------------------------------------------------
+# create temp dir
+
+debug=0
+TMP_DIR=
+chartsd_cleanup() {
+    trap '' EXIT QUIT HUP INT TERM
+
+    if [ ! -z "$TMP_DIR" -a -d "$TMP_DIR" ]
+    then
+        [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: cleaning up temporary directory $TMP_DIR ..."
+        rm -rf "$TMP_DIR"
+    fi
+    exit 0
+}
+trap chartsd_cleanup EXIT QUIT HUP INT TERM
+
+if [ $UID = "0" ]
+then
+    TMP_DIR="$( mktemp -d /var/run/netdata-${PROGRAM_NAME}-XXXXXXXXXX )"
+else
+    TMP_DIR="$( mktemp -d /tmp/.netdata-${PROGRAM_NAME}-XXXXXXXXXX )"
+fi
+
+logdate() {
+    date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+    local status="${1}"
+    shift
+
+    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${MODULE_NAME}: ${*}"
+
+}
+
+warning() {
+    log WARNING "${@}"
+}
+
+error() {
+    log ERROR "${@}"
+}
+
+info() {
+    log INFO "${@}"
+}
+
+fatal() {
+    log FATAL "${@}"
+    echo "DISABLE"
+    exit 1
+}
+
+debug() {
+    [ $debug -eq 1 ] && log DEBUG "${@}"
+}
+
+# -----------------------------------------------------------------------------
+# check a few commands
+
+require_cmd() {
+    local x=$(which "${1}" 2>/dev/null || command -v "${1}" 2>/dev/null)
+    if [ -z "${x}" -o ! -x "${x}" ]
+        then
+        warning "command '${1}' is not found in ${PATH}."
+        eval "${1^^}_CMD=\"\""
+        return 1
+    fi
+
+    eval "${1^^}_CMD=\"${x}\""
+    return 0
+}
+
+require_cmd date || exit 1
+require_cmd sed || exit 1
+require_cmd basename || exit 1
+require_cmd dirname || exit 1
+require_cmd cat || exit 1
+require_cmd grep || exit 1
+require_cmd egrep || exit 1
+require_cmd mktemp || exit 1
+require_cmd awk || exit 1
+require_cmd timeout || exit 1
+require_cmd curl || exit 1
+
+# -----------------------------------------------------------------------------
+
+[ $(( ${BASH_VERSINFO[0]} )) -lt 4 ] && fatal "BASH version 4 or later is required, but found version: ${BASH_VERSION}. Please upgrade."
+
+info "started from '$PROGRAM_FILE' with options: $*"
+
+# -----------------------------------------------------------------------------
+# internal defaults
+# netdata exposes a few environment variables for us
+
+[ -z "${NETDATA_PLUGINS_DIR}" ] && NETDATA_PLUGINS_DIR="$(dirname "${0}")"
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="@configdir_POST@"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="@libconfigdir_POST@"
+
+pluginsd="${NETDATA_PLUGINS_DIR}"
+stockconfd="${NETDATA_STOCK_CONFIG_DIR}/${PROGRAM_NAME}"
+userconfd="${NETDATA_USER_CONFIG_DIR}/${PROGRAM_NAME}"
+olduserconfd="${NETDATA_USER_CONFIG_DIR}"
+chartsd="$pluginsd/../charts.d"
+
+minimum_update_frequency="${NETDATA_UPDATE_EVERY-1}"
+update_every=${minimum_update_frequency}    # this will be overwritten by the command line
+
+# work around for non BASH shells
+charts_create="_create"
+charts_update="_update"
+charts_check="_check"
+charts_undescore="_"
+
+# when making iterations, charts.d can loop more frequently
+# to prevent plugins missing iterations.
+# this is a percentage relative to update_every to align its
+# iterations.
+# The minimum is 10%, the maximum 100%.
+# So, if update_every is 1 second and time_divisor is 50,
+# charts.d will iterate every 500ms.
+# Charts will be called to collect data only if the time
+# passed since the last time the collected data is equal or
+# above their update_every.
+time_divisor=50
+
+# number of seconds to run without restart
+# after this time, charts.d.plugin will exit
+# netdata will restart it
+restart_timeout=$((3600 * 4))
+
+# check if the charts.d plugins are using global variables
+# they should not.
+# It does not currently support BASH v4 arrays, so it is
+# disabled
+dryrunner=0
+
+# check for timeout command
+check_for_timeout=1
+
+# the default enable/disable value for all charts
+enable_all_charts="yes"
+
+# -----------------------------------------------------------------------------
+# parse parameters
+
+check=0
+chart_only=
+while [ ! -z "$1" ]
+do
+    if [ "$1" = "check" ]
+    then
+        check=1
+        shift
+        continue
+    fi
+
+    if [ "$1" = "debug" -o "$1" = "all" ]
+    then
+        debug=1
+        shift
+        continue
+    fi
+
+    if [ -f "$chartsd/$1.chart.sh" ]
+    then
+        debug=1
+        chart_only="$( echo $1.chart.sh | sed "s/\.chart\.sh$//g" )"
+        shift
+        continue
+    fi
+
+    if [ -f "$chartsd/$1" ]
+    then
+        debug=1
+        chart_only="$( echo $1 | sed "s/\.chart\.sh$//g" )"
+        shift
+        continue
+    fi
+
+    # number check
+    n="$1"
+    x=$(( n ))
+    if [ "$x" = "$n" ]
+    then
+        shift
+        update_every=$x
+        [ $update_every -lt $minimum_update_frequency ] && update_every=$minimum_update_frequency
+        continue
+    fi
+
+    fatal "Cannot understand parameter $1. Aborting."
+done
+
+
+# -----------------------------------------------------------------------------
+# loop control
+
+# default sleep function
+LOOPSLEEPMS_HIGHRES=0
+now_ms=
+current_time_ms_default() {
+    now_ms="$(date +'%s')000"
+}
+current_time_ms="current_time_ms_default"
+current_time_ms_accuracy=1
+mysleep="sleep"
+
+# if found and included, this file overwrites loopsleepms()
+# and current_time_ms() with a high resolution timer function
+# for precise looping.
+source "$pluginsd/loopsleepms.sh.inc"
+[ $? -ne 0 ] && error "Failed to load '$pluginsd/loopsleepms.sh.inc'."
+
+# -----------------------------------------------------------------------------
+# load my configuration
+
+for myconfig in "${NETDATA_STOCK_CONFIG_DIR}/${PROGRAM_NAME}.conf" "${NETDATA_USER_CONFIG_DIR}/${PROGRAM_NAME}.conf"
+do
+    if [ -f "$myconfig" ]
+    then
+        source "$myconfig"
+        if [ $? -ne 0 ]
+        then
+            error "Config file '$myconfig' loaded with errors."
+        else
+            info "Configuration file '$myconfig' loaded."
+        fi
+    else
+        warning "Configuration file '$myconfig' not found."
+    fi
+done
+
+# make sure time_divisor is right
+time_divisor=$((time_divisor))
+[ $time_divisor -lt 10 ] && time_divisor=10
+[ $time_divisor -gt 100 ] && time_divisor=100
+
+
+# we check for the timeout command, after we load our
+# configuration, so that the user may overwrite the
+# timeout command we use, providing a function that
+# can emulate the timeout command we need:
+# > timeout SECONDS command ...
+if [ $check_for_timeout -eq 1 ]
+    then
+    require_cmd timeout || exit 1
+fi
+
+# -----------------------------------------------------------------------------
+# internal checks
+
+# netdata passes the requested update frequency as the first argument
+update_every=$(( update_every + 1 - 1)) # makes sure it is a number
+test $update_every -eq 0 && update_every=1 # if it is zero, make it 1
+
+# check the charts.d directory
+[ ! -d "$chartsd" ] && fatal "cannot find charts directory '$chartsd'"
+
+# -----------------------------------------------------------------------------
+# library functions
+
+fixid() {
+    echo "$*" |\
+        tr -c "[A-Z][a-z][0-9]" "_" |\
+        sed -e "s|^_\+||g" -e "s|_\+$||g" -e "s|_\+|_|g" |\
+        tr "[A-Z]" "[a-z]"
+}
+
+run() {
+    local ret pid="${BASHPID}" t
+
+    if [ "z${1}" = "z-t" -a "${2}" != "0" ]
+    then
+        t="${2}"
+        shift 2
+        timeout ${t} "${@}" 2>"${TMP_DIR}/run.${pid}"
+        ret=$?
+    else
+        "${@}" 2>"${TMP_DIR}/run.${pid}"
+        ret=$?
+    fi
+
+    if [ ${ret} -ne 0 ]
+    then
+        {
+            printf "$(logdate): ${PROGRAM_NAME}: ${status}: ${MODULE_NAME}: command '"
+            printf "%q " "${@}"
+            printf "' failed with code ${ret}:\n --- BEGIN TRACE ---\n"
+            cat "${TMP_DIR}/run.${pid}"
+            printf " --- END TRACE ---\n"
+        } >&2
+    fi
+    rm "${TMP_DIR}/run.${pid}"
+
+    return ${ret}
+}
+
+# convert any floating point number
+# to integer, give a multiplier
+# the result is stored in ${FLOAT2INT_RESULT}
+# so that no fork is necessary
+# the multiplier must be a power of 10
+float2int() {
+    local f m="$2" a b l v=($1)
+    f=${v[0]}
+
+    # the length of the multiplier - 1
+    l=$(( ${#m} - 1 ))
+
+    # check if the number is in scientific notation
+    if [[ ${f} =~ ^[[:space:]]*(-)?[0-9.]+(e|E)(\+|-)[0-9]+ ]]
+        then
+        # convert it to decimal
+        # unfortunately, this fork cannot be avoided
+        # if you know of a way to avoid it, please let me know
+        f=$(printf "%0.${l}f" ${f})
+    fi
+
+    # split the floating point number
+    # in integer (a) and decimal (b)
+    a=${f/.*/}
+    b=${f/*./}
+
+    # if the integer part is missing
+    # set it to zero
+    [ -z "${a}" ] && a="0"
+
+    # strip leading zeros from the integer part
+    # base 10 convertion
+    a=$((10#$a))
+
+    # check the length of the decimal part
+    # against the length of the multiplier
+    if [ ${#b} -gt ${l} ]
+        then
+        # too many digits - take the most significant
+        b=${b:0:${l}}
+
+    elif [ ${#b} -lt ${l} ]
+        then
+        # too few digits - pad with zero on the right
+        local z="00000000000000000000000" r=$((l - ${#b}))
+        b="${b}${z:0:${r}}"
+    fi
+
+    # strip leading zeros from the decimal part
+    # base 10 convertion
+    b=$((10#$b))
+
+    # store the result
+    FLOAT2INT_RESULT=$(( (a * m) + b ))
+}
+
+
+# -----------------------------------------------------------------------------
+# charts check functions
+
+all_charts() {
+    cd "$chartsd"
+    [ $? -ne 0 ] && error "cannot cd to $chartsd" && return 1
+
+    ls *.chart.sh | sed "s/\.chart\.sh$//g"
+}
+
+declare -A charts_enable_keyword=(
+          ['apache']="force"
+        ['cpu_apps']="force"
+         ['cpufreq']="force"
+         ['example']="force"
+            ['exim']="force"
+         ['hddtemp']="force"
+    ['load_average']="force"
+        ['mem_apps']="force"
+           ['mysql']="force"
+           ['nginx']="force"
+          ['phpfpm']="force"
+         ['postfix']="force"
+         ['sensors']="force"
+           ['squid']="force"
+          ['tomcat']="force"
+    )
+
+all_enabled_charts() {
+    local charts= enabled= required=
+
+    # find all enabled charts
+
+    for chart in $( all_charts )
+    do
+        MODULE_NAME="${chart}"
+
+        eval "enabled=\$$chart"
+        if [ -z "${enabled}" ]
+            then
+            enabled="${enable_all_charts}"
+        fi
+
+        required="${charts_enable_keyword[${chart}]}"
+        [ -z "${required}" ] && required="yes"
+
+        if [ ! "${enabled}" = "${required}" ]
+        then
+            info "is disabled. Add a line with $chart=$required in '${NETDATA_USER_CONFIG_DIR}/${PROGRAM_NAME}.conf' to enable it (or remove the line that disables it)."
+        else
+            debug "is enabled for auto-detection."
+            local charts="$charts $chart"
+        fi
+    done
+    MODULE_NAME="main"
+
+    local charts2=
+    for chart in $charts
+    do
+        MODULE_NAME="${chart}"
+
+        # check the enabled charts
+        local check="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_check()" )"
+        if [ -z "$check" ]
+        then
+            error "module '$chart' does not seem to have a $chart$charts_check() function. Disabling it."
+            continue
+        fi
+
+        local create="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_create()" )"
+        if [ -z "$create" ]
+        then
+            error "module '$chart' does not seem to have a $chart$charts_create() function. Disabling it."
+            continue
+        fi
+
+        local update="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_update()" )"
+        if [ -z "$update" ]
+        then
+            error "module '$chart' does not seem to have a $chart$charts_update() function. Disabling it."
+            continue
+        fi
+
+        # check its config
+        #if [ -f "$userconfd/$chart.conf" ]
+        #then
+        #   if [ ! -z "$( cat "$userconfd/$chart.conf" | sed "s/^ \+//g" | grep -v "^$" | grep -v "^#" | grep -v "^$chart$charts_undescore" )" ]
+        #   then
+        #       error "module's $chart config $userconfd/$chart.conf should only have lines starting with $chart$charts_undescore . Disabling it."
+        #       continue
+        #   fi
+        #fi
+
+        #if [ $dryrunner -eq 1 ]
+        #   then
+        #   "$pluginsd/charts.d.dryrun-helper.sh" "$chart" "$chartsd/$chart.chart.sh" "$userconfd/$chart.conf" >/dev/null
+        #   if [ $? -ne 0 ]
+        #   then
+        #       error "module's $chart did not pass the dry run check. This means it uses global variables not starting with $chart. Disabling it."
+        #       continue
+        #   fi
+        #fi
+
+        local charts2="$charts2 $chart"
+    done
+    MODULE_NAME="main"
+
+    echo $charts2
+    debug "enabled charts: $charts2"
+}
+
+# -----------------------------------------------------------------------------
+# load the charts
+
+suffix_retries="_retries"
+suffix_update_every="_update_every"
+active_charts=
+for chart in $( all_enabled_charts )
+do
+    MODULE_NAME="${chart}"
+
+    debug "loading module: '$chartsd/$chart.chart.sh'"
+
+    source "$chartsd/$chart.chart.sh"
+    [ $? -ne 0 ] && warning "Module '$chartsd/$chart.chart.sh' loaded with errors."
+
+    # first load the stock config
+    if [ -f "$stockconfd/$chart.conf" ]
+    then
+        debug "loading module configuration: '$stockconfd/$chart.conf'"
+        source "$stockconfd/$chart.conf"
+        [ $? -ne 0 ] && warning "Config file '$stockconfd/$chart.conf' loaded with errors."
+    else
+        debug "not found module configuration: '$stockconfd/$chart.conf'"
+    fi
+
+    # then load the user config (it overwrites the stock)
+    if [ -f "$userconfd/$chart.conf" ]
+    then
+        debug "loading module configuration: '$userconfd/$chart.conf'"
+        source "$userconfd/$chart.conf"
+        [ $? -ne 0 ] && warning "Config file '$userconfd/$chart.conf' loaded with errors."
+    else
+        debug "not found module configuration: '$userconfd/$chart.conf'"
+
+        if [ -f "$olduserconfd/$chart.conf" ]
+        then
+            # support for very old netdata that had the charts.d module configs in /etc/netdata
+            info "loading module configuration from obsolete location: '$olduserconfd/$chart.conf'"
+            source "$olduserconfd/$chart.conf"
+            [ $? -ne 0 ] && warning "Config file '$olduserconfd/$chart.conf' loaded with errors."
+        fi
+    fi
+
+    eval "dt=\$$chart$suffix_update_every"
+    dt=$(( dt + 1 - 1 )) # make sure it is a number
+    if [ $dt -lt $update_every ]
+    then
+        eval "$chart$suffix_update_every=$update_every"
+    fi
+
+    $chart$charts_check
+    if [ $? -eq 0 ]
+    then
+        debug "module '$chart' activated"
+        active_charts="$active_charts $chart"
+    else
+        error "module's '$chart' check() function reports failure."
+    fi
+done
+MODULE_NAME="main"
+debug "activated modules: $active_charts"
+
+
+# -----------------------------------------------------------------------------
+# check overwrites
+
+# enable work time reporting
+debug_time=
+test $debug -eq 1 && debug_time=tellwork
+
+# if we only need a specific chart, remove all the others
+if [ ! -z "${chart_only}" ]
+then
+    debug "requested to run only for: '${chart_only}'"
+    check_charts=
+    for chart in $active_charts
+    do
+        if [ "$chart" = "$chart_only" ]
+        then
+            check_charts="$chart"
+            break
+        fi
+    done
+    active_charts="$check_charts"
+fi
+debug "activated charts: $active_charts"
+
+# stop if we just need a pre-check
+if [ $check -eq 1 ]
+then
+    info "CHECK RESULT"
+    info "Will run the charts: $active_charts"
+    exit 0
+fi
+
+# -----------------------------------------------------------------------------
+
+cd "${TMP_DIR}" || exit 1
+
+# -----------------------------------------------------------------------------
+# create charts
+
+run_charts=
+for chart in $active_charts
+do
+    MODULE_NAME="${chart}"
+
+    debug "calling '$chart$charts_create()'..."
+    $chart$charts_create
+    if [ $? -eq 0 ]
+    then
+        run_charts="$run_charts $chart"
+        debug "'$chart' initialized."
+    else
+        error "module's '$chart' function '$chart$charts_create()' reports failure."
+    fi
+done
+MODULE_NAME="main"
+debug "run_charts='$run_charts'"
+
+
+# -----------------------------------------------------------------------------
+# update dimensions
+
+[ -z "$run_charts" ] && fatal "No charts to collect data from."
+
+declare -A charts_last_update=() charts_update_every=() charts_retries=() charts_next_update=() charts_run_counter=() charts_serial_failures=()
+global_update() {
+    local exit_at \
+        c=0 dt ret last_ms exec_start_ms exec_end_ms \
+        chart now_charts=() next_charts=($run_charts) \
+        next_ms x seconds millis
+
+    # return the current time in ms in $now_ms
+    ${current_time_ms}
+
+    exit_at=$(( now_ms + (restart_timeout * 1000) ))
+
+    for chart in $run_charts
+    do
+        eval "charts_update_every[$chart]=\$$chart$suffix_update_every"
+        test -z "${charts_update_every[$chart]}" && charts_update_every[$chart]=$update_every
+
+        eval "charts_retries[$chart]=\$$chart$suffix_retries"
+        test -z "${charts_retries[$chart]}" && charts_retries[$chart]=10
+
+        charts_last_update[$chart]=$((now_ms - (now_ms % (charts_update_every[$chart] * 1000) ) ))
+        charts_next_update[$chart]=$(( charts_last_update[$chart] + (charts_update_every[$chart] * 1000) ))
+        charts_run_counter[$chart]=0
+        charts_serial_failures[$chart]=0
+
+        echo "CHART netdata.plugin_chartsd_$chart '' 'Execution time for $chart plugin' 'milliseconds / run' charts.d netdata.plugin_charts area 145000 ${charts_update_every[$chart]}"
+        echo "DIMENSION run_time 'run time' absolute 1 1"
+    done
+
+    # the main loop
+    while [ "${#next_charts[@]}" -gt 0 ]
+    do
+        c=$((c + 1))
+        now_charts=("${next_charts[@]}")
+        next_charts=()
+
+        # return the current time in ms in $now_ms
+        ${current_time_ms}
+
+        for chart in "${now_charts[@]}"
+        do
+            MODULE_NAME="${chart}"
+
+            if [ ${now_ms} -ge ${charts_next_update[$chart]} ]
+            then
+                last_ms=${charts_last_update[$chart]}
+                dt=$(( (now_ms - last_ms) ))
+
+                charts_last_update[$chart]=${now_ms}
+
+                while [ ${charts_next_update[$chart]} -lt ${now_ms} ]
+                do
+                    charts_next_update[$chart]=$(( charts_next_update[$chart] + (charts_update_every[$chart] * 1000) ))
+                done
+
+                # the first call should not give a duration
+                # so that netdata calibrates to current time
+                dt=$(( dt * 1000 ))
+                charts_run_counter[$chart]=$(( charts_run_counter[$chart] + 1 ))
+                if [ ${charts_run_counter[$chart]} -eq 1 ]
+                    then
+                    dt=
+                fi
+
+                exec_start_ms=$now_ms
+                $chart$charts_update $dt
+                ret=$?
+
+                # return the current time in ms in $now_ms
+                ${current_time_ms}; exec_end_ms=$now_ms
+
+                echo "BEGIN netdata.plugin_chartsd_$chart $dt"
+                echo "SET run_time = $(( exec_end_ms - exec_start_ms ))"
+                echo "END"
+
+                if [ $ret -eq 0 ]
+                then
+                    charts_serial_failures[$chart]=0
+                    next_charts+=($chart)
+                else
+                    charts_serial_failures[$chart]=$(( charts_serial_failures[$chart] + 1 ))
+
+                    if [ ${charts_serial_failures[$chart]} -gt ${charts_retries[$chart]} ]
+                        then
+                        error "module's '$chart' update() function reported failure ${charts_serial_failures[$chart]} times. Disabling it."
+                    else
+                        error "module's '$chart' update() function reports failure. Will keep trying for a while."
+                        next_charts+=($chart)
+                    fi
+                fi
+            else
+                next_charts+=($chart)
+            fi
+        done
+        MODULE_NAME="${chart}"
+
+        # wait the time you are required to
+        next_ms=$((now_ms + (update_every * 1000 * 100) ))
+        for x in "${charts_next_update[@]}"; do [ ${x} -lt ${next_ms} ] && next_ms=${x}; done
+        next_ms=$((next_ms - now_ms))
+
+        if [ ${LOOPSLEEPMS_HIGHRES} -eq 1 -a ${next_ms} -gt 0 ]
+            then
+            next_ms=$(( next_ms + current_time_ms_accuracy ))
+            seconds=$(( next_ms / 1000 ))
+            millis=$(( next_ms % 1000 ))
+            if [ ${millis} -lt 10  ]
+                then
+                millis="00${millis}"
+            elif [ ${millis} -lt 100 ]
+                then
+                millis="0${millis}"
+            fi
+
+            debug "sleeping for ${seconds}.${millis} seconds."
+            ${mysleep} ${seconds}.${millis}
+        else
+            debug "sleeping for ${update_every} seconds."
+            ${mysleep} $update_every
+        fi
+
+        test ${now_ms} -ge ${exit_at} && exit 0
+    done
+
+    fatal "nothing left to do, exiting..."
+}
+
+global_update
diff --git a/collectors/charts.d.plugin/cpu_apps/Makefile.inc b/collectors/charts.d.plugin/cpu_apps/Makefile.inc
new file mode 100644
index 000000000..a35f82837
--- /dev/null
+++ b/collectors/charts.d.plugin/cpu_apps/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += cpu_apps/cpu_apps.chart.sh
+dist_chartsconfig_DATA += cpu_apps/cpu_apps.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += cpu_apps/README.md cpu_apps/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/cpu_apps/README.md b/collectors/charts.d.plugin/cpu_apps/README.md
new file mode 100644
index 000000000..cd8adf0a2
--- /dev/null
+++ b/collectors/charts.d.plugin/cpu_apps/README.md
@@ -0,0 +1,2 @@
+> THIS MODULE IS OBSOLETE.
+> USE APPS.PLUGIN.
diff --git a/charts.d/cpu_apps.chart.sh b/collectors/charts.d.plugin/cpu_apps/cpu_apps.chart.sh
index 8e075831a..869464afe 100644
--- a/charts.d/cpu_apps.chart.sh
+++ b/collectors/charts.d.plugin/cpu_apps/cpu_apps.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash disable=SC2154,SC1072,SC1073,SC2009,SC2162,SC2006,SC2002,SC2086,SC1117
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 # THIS PLUGIN IS OBSOLETE
 # USE apps.plugin INSTEAD
diff --git a/conf.d/charts.d/cpu_apps.conf b/collectors/charts.d.plugin/cpu_apps/cpu_apps.conf
index 850cd0c6f..850cd0c6f 100644
--- a/conf.d/charts.d/cpu_apps.conf
+++ b/collectors/charts.d.plugin/cpu_apps/cpu_apps.conf
diff --git a/collectors/charts.d.plugin/cpufreq/Makefile.inc b/collectors/charts.d.plugin/cpufreq/Makefile.inc
new file mode 100644
index 000000000..682379133
--- /dev/null
+++ b/collectors/charts.d.plugin/cpufreq/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += cpufreq/cpufreq.chart.sh
+dist_chartsconfig_DATA += cpufreq/cpufreq.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += cpufreq/README.md cpufreq/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/cpufreq/README.md b/collectors/charts.d.plugin/cpufreq/README.md
new file mode 100644
index 000000000..d82951aac
--- /dev/null
+++ b/collectors/charts.d.plugin/cpufreq/README.md
@@ -0,0 +1,2 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
diff --git a/charts.d/cpufreq.chart.sh b/collectors/charts.d.plugin/cpufreq/cpufreq.chart.sh
index 1c41c38f2..1fc6caabf 100644
--- a/charts.d/cpufreq.chart.sh
+++ b/collectors/charts.d.plugin/cpufreq/cpufreq.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 # if this chart is called X.chart.sh, then all functions and global variables
@@ -19,7 +20,7 @@ cpufreq_update_every=
 cpufreq_priority=10000
 
 cpufreq_find_all_files() {
-	find $1 -maxdepth $cpufreq_sys_depth -name scaling_cur_freq 2>/dev/null
+	find "$1" -maxdepth $cpufreq_sys_depth -name scaling_cur_freq 2>/dev/null
 }
 
 # _check is called once, to find out if this chart should be enabled or not
@@ -29,30 +30,30 @@ cpufreq_check() {
 	#  - 0 to enable the chart
 	#  - 1 to disable the chart
 
-	[ -z "$( cpufreq_find_all_files $cpufreq_sys_dir )" ] && return 1
+	[ -z "$( cpufreq_find_all_files "$cpufreq_sys_dir" )" ] && return 1
 	return 0
 }
 
 # _create is called once, to create the charts
 cpufreq_create() {
-	local dir= file= id= i=
+	local dir file id i
 
 	# we create a script with the source of the
 	# cpufreq_update() function
 	# - the highest speed we can achieve -
-	[ $cpufreq_source_update -eq 1 ] && echo >$TMP_DIR/cpufreq.sh "cpufreq_update() {"
+	[ $cpufreq_source_update -eq 1 ] && echo >"$TMP_DIR/cpufreq.sh" "cpufreq_update() {"
 
 	echo "CHART cpu.cpufreq '' 'CPU Clock' 'MHz' 'cpufreq' '' line $((cpufreq_priority + 1)) $cpufreq_update_every"
-	echo >>$TMP_DIR/cpufreq.sh "echo \"BEGIN cpu.cpufreq \$1\""
+	echo >>"$TMP_DIR/cpufreq.sh" "echo \"BEGIN cpu.cpufreq \$1\""
 
 	i=0
-	for file in $( cpufreq_find_all_files $cpufreq_sys_dir | sort -u )
+	for file in $( cpufreq_find_all_files "$cpufreq_sys_dir" | sort -u )
 	do
 		i=$(( i + 1 ))
-		dir=$( dirname $file )
+		dir=$( dirname "$file" )
 		cpu=
 
-		[ -f $dir/affected_cpus ] && cpu=$( cat $dir/affected_cpus )
+		[ -f "$dir/affected_cpus" ] && cpu=$( cat "$dir/affected_cpus" )
 		[ -z "$cpu" ] && cpu="$i.a"
 
 		id="$( fixid "cpu$cpu" )"
@@ -60,14 +61,15 @@ cpufreq_create() {
 		debug "file='$file', dir='$dir', cpu='$cpu', id='$id'"
 
 		echo "DIMENSION $id '$id' absolute 1 1000"
-		echo >>$TMP_DIR/cpufreq.sh "echo \"SET $id = \"\$(< $file )"
+		echo >>"$TMP_DIR/cpufreq.sh" "echo \"SET $id = \"\$(< $file )"
 	done
-	echo >>$TMP_DIR/cpufreq.sh "echo END"
+	echo >>"$TMP_DIR/cpufreq.sh" "echo END"
 
-	[ $cpufreq_source_update -eq 1 ] && echo >>$TMP_DIR/cpufreq.sh "}"
+	[ $cpufreq_source_update -eq 1 ] && echo >>"$TMP_DIR/cpufreq.sh" "}"
 
 	# ok, load the function cpufreq_update() we created
-	[ $cpufreq_source_update -eq 1 ] && . $TMP_DIR/cpufreq.sh
+        # shellcheck disable=SC1090
+	[ $cpufreq_source_update -eq 1 ] && . "$TMP_DIR/cpufreq.sh"
 
 	return 0
 }
@@ -80,8 +82,8 @@ cpufreq_update() {
 	# do all the work to collect / calculate the values
 	# for each dimension
 	# remember: KEEP IT SIMPLE AND SHORT
-
-	[ $cpufreq_source_update -eq 0 ] && . $TMP_DIR/cpufreq.sh $1
+        # shellcheck disable=SC1090
+	[ $cpufreq_source_update -eq 0 ] && . "$TMP_DIR/cpufreq.sh" "$1"
 
 	return 0
 }
diff --git a/conf.d/charts.d/cpufreq.conf b/collectors/charts.d.plugin/cpufreq/cpufreq.conf
index 7130555af..7130555af 100644
--- a/conf.d/charts.d/cpufreq.conf
+++ b/collectors/charts.d.plugin/cpufreq/cpufreq.conf
diff --git a/collectors/charts.d.plugin/example/Makefile.inc b/collectors/charts.d.plugin/example/Makefile.inc
new file mode 100644
index 000000000..e6838fbbe
--- /dev/null
+++ b/collectors/charts.d.plugin/example/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += example/example.chart.sh
+dist_chartsconfig_DATA += example/example.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += example/README.md example/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/example/README.md b/collectors/charts.d.plugin/example/README.md
new file mode 100644
index 000000000..bfd5e210a
--- /dev/null
+++ b/collectors/charts.d.plugin/example/README.md
@@ -0,0 +1,2 @@
+This is just an example charts.d data collector.
+
diff --git a/charts.d/example.chart.sh b/collectors/charts.d.plugin/example/example.chart.sh
index ffc98712f..1562c597a 100644
--- a/charts.d/example.chart.sh
+++ b/collectors/charts.d.plugin/example/example.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 # if this chart is called X.chart.sh, then all functions and global variables
@@ -46,7 +47,7 @@ example_get() {
 	example_value4=$((8192 + (RANDOM * 16383 / 32767) ))
 
 	if [ $example_count -gt 0 ]
-		then
+	then
 		example_count=$((example_count - 1))
 
 		[ $example_last -gt 16383 ] && example_value4=$((example_last + (RANDOM * ( (32767 - example_last) / 2) / 32767)))
@@ -54,8 +55,14 @@ example_get() {
 	else
 		example_count=$((1 + (RANDOM * 5 / 32767) ))
 
-		[ $example_last -gt 16383 -a $example_value4 -gt 16383 ] && example_value4=$((example_value4 - 16383))
-		[ $example_last -le 16383 -a $example_value4 -lt 16383 ] && example_value4=$((example_value4 + 16383))
+		if [ $example_last -gt 16383 ] && [ $example_value4 -gt 16383 ]
+		then
+			example_value4=$((example_value4 - 16383))
+		fi
+		if [ $example_last -le 16383 ] && [ $example_value4 -lt 16383 ]
+		then
+			example_value4=$((example_value4 + 16383))
+		fi
 	fi
 	example_last=$example_value4
 
diff --git a/conf.d/charts.d/example.conf b/collectors/charts.d.plugin/example/example.conf
index 6232ca584..6232ca584 100644
--- a/conf.d/charts.d/example.conf
+++ b/collectors/charts.d.plugin/example/example.conf
diff --git a/collectors/charts.d.plugin/exim/Makefile.inc b/collectors/charts.d.plugin/exim/Makefile.inc
new file mode 100644
index 000000000..ca2112a80
--- /dev/null
+++ b/collectors/charts.d.plugin/exim/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += exim/exim.chart.sh
+dist_chartsconfig_DATA += exim/exim.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += exim/README.md exim/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/exim/README.md b/collectors/charts.d.plugin/exim/README.md
new file mode 100644
index 000000000..d82951aac
--- /dev/null
+++ b/collectors/charts.d.plugin/exim/README.md
@@ -0,0 +1,2 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
diff --git a/charts.d/exim.chart.sh b/collectors/charts.d.plugin/exim/exim.chart.sh
index 4c70f2c19..8099a7249 100644
--- a/charts.d/exim.chart.sh
+++ b/collectors/charts.d.plugin/exim/exim.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 # Contributed by @jsveiga with PR #480
 
@@ -22,7 +23,7 @@ exim_check() {
         exim_command="${EXIM_CMD}"
     fi
 
-	if [ $(${exim_command} -bpc 2>&1 | grep -c denied) -ne 0 ]
+	if [ "$(${exim_command} -bpc 2>&1 | grep -c denied)" -ne 0 ]
 	then
 		error "permission denied - please set 'queue_list_requires_admin = false' in your exim options file"
 		return 1
@@ -41,7 +42,7 @@ EOF
 
 exim_update() {
     echo "BEGIN exim_local.qemails $1"
-    echo "SET emails = " $(run ${exim_command} -bpc)
+    echo "SET emails = $(run "${exim_command}" -bpc)"
     echo "END"
     return 0
 }
diff --git a/conf.d/charts.d/exim.conf b/collectors/charts.d.plugin/exim/exim.conf
index f96ac4dbb..f96ac4dbb 100644
--- a/conf.d/charts.d/exim.conf
+++ b/collectors/charts.d.plugin/exim/exim.conf
diff --git a/collectors/charts.d.plugin/hddtemp/Makefile.inc b/collectors/charts.d.plugin/hddtemp/Makefile.inc
new file mode 100644
index 000000000..2bd29e5b1
--- /dev/null
+++ b/collectors/charts.d.plugin/hddtemp/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += hddtemp/hddtemp.chart.sh
+dist_chartsconfig_DATA += hddtemp/hddtemp.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += hddtemp/README.md hddtemp/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/hddtemp/README.md b/collectors/charts.d.plugin/hddtemp/README.md
new file mode 100644
index 000000000..98f18900c
--- /dev/null
+++ b/collectors/charts.d.plugin/hddtemp/README.md
@@ -0,0 +1,28 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
+
+# hddtemp
+
+The plugin will collect temperatures from disks 
+
+It will create one chart with all active disks
+
+1. **temperature in Celsius**
+
+### configuration
+
+hddtemp needs to be running in daemonized mode
+
+```sh
+# host with daemonized hddtemp
+hddtemp_host="localhost"
+
+# port on which hddtemp is showing data
+hddtemp_port="7634"
+
+# array of included disks
+# the default is to include all
+hddtemp_disks=()
+```
+
+---
diff --git a/charts.d/hddtemp.chart.sh b/collectors/charts.d.plugin/hddtemp/hddtemp.chart.sh
index 3aada1751..e90310981 100644
--- a/charts.d/hddtemp.chart.sh
+++ b/collectors/charts.d.plugin/hddtemp/hddtemp.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 # contributed by @paulfantom with PR #511
 
@@ -30,13 +31,14 @@ hddtemp_create() {
 		local all
 		all=$(nc $hddtemp_host $hddtemp_port )
 		unset hddtemp_disks
-		hddtemp_disks=( `grep -Po '/dev/[^|]+' <<< "$all" | cut -c 6-` )
+		# shellcheck disable=SC2190,SC2207
+		hddtemp_disks=( $(grep -Po '/dev/[^|]+' <<< "$all" | cut -c 6-) )
 	fi
 #	local disk_names
 #	disk_names=(`sed -e 's/||/\n/g;s/^|//' <<< "$all" | cut -d '|' -f2 | tr ' ' '_'`)
 
 	echo "CHART hddtemp.temperature 'disks_temp' 'temperature' 'Celsius' 'Disks temperature' 'hddtemp.temp' line $((hddtemp_priority)) $hddtemp_update_every"
-	for i in `seq 0 $((${#hddtemp_disks[@]}-1))`; do
+	for i in $(seq 0 $((${#hddtemp_disks[@]}-1))); do
 #		echo "DIMENSION ${hddtemp_disks[i]} ${disk_names[i]} absolute 1 1"
 		echo "DIMENSION ${hddtemp_disks[$i]} '' absolute 1 1"
 	done
@@ -44,13 +46,14 @@ hddtemp_create() {
 }
 
 # _update is called continuously, to collect the values
-hddtemp_last=0
-hddtemp_count=0
+#hddtemp_last=0
+#hddtemp_count=0
 hddtemp_update() {
 #        local all=( `nc $hddtemp_host $hddtemp_port | sed -e 's/||/\n/g;s/^|//' | cut -d '|' -f3` )
 #	local all=( `nc $hddtemp_host $hddtemp_port | awk 'BEGIN { FS="|" };{i=4; while (i <= NF) {print $i+0;i+=5;};}'` )
 	OLD_IFS=$IFS
 	set -f
+	# shellcheck disable=SC2207
 	IFS="|" all=( $(nc $hddtemp_host $hddtemp_port 2>/dev/null) )
 	set +f
 	IFS=$OLD_IFS
diff --git a/conf.d/charts.d/hddtemp.conf b/collectors/charts.d.plugin/hddtemp/hddtemp.conf
index b6037b40e..b6037b40e 100644
--- a/conf.d/charts.d/hddtemp.conf
+++ b/collectors/charts.d.plugin/hddtemp/hddtemp.conf
diff --git a/collectors/charts.d.plugin/libreswan/Makefile.inc b/collectors/charts.d.plugin/libreswan/Makefile.inc
new file mode 100644
index 000000000..af767d0dd
--- /dev/null
+++ b/collectors/charts.d.plugin/libreswan/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += libreswan/libreswan.chart.sh
+dist_chartsconfig_DATA += libreswan/libreswan.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += libreswan/README.md libreswan/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/libreswan/README.md b/collectors/charts.d.plugin/libreswan/README.md
new file mode 100644
index 000000000..41026cf72
--- /dev/null
+++ b/collectors/charts.d.plugin/libreswan/README.md
@@ -0,0 +1,42 @@
+# libreswan
+
+The plugin will collects bytes-in, bytes-out and uptime for all established libreswan IPSEC tunnels.
+
+The following charts are created, **per tunnel**:
+
+1. **Uptime**
+
+ * the uptime of the tunnel
+
+2. **Traffic**
+
+ * bytes in
+ * bytes out
+
+### configuration
+
+Its config file is `/etc/netdata/charts.d/libreswan.conf`.
+
+The plugin executes 2 commands to collect all the information it needs:
+
+```sh
+ipsec whack --status
+ipsec whack --trafficstatus
+```
+
+The first command is used to extract the currently established tunnels, their IDs and their names.
+The second command is used to extract the current uptime and traffic.
+
+Most probably user `netdata` will not be able to query libreswan, so the `ipsec` commands will be denied.
+The plugin attempts to run `ipsec` as `sudo ipsec ...`, to get access to libreswan statistics.
+
+To allow user `netdata` execute `sudo ipsec ...`, create the file `/etc/sudoers.d/netdata` with this content:
+
+```
+netdata ALL = (root) NOPASSWD: /sbin/ipsec whack --status
+netdata ALL = (root) NOPASSWD: /sbin/ipsec whack --trafficstatus
+```
+
+Make sure the path `/sbin/ipsec` matches your setup (execute `which ipsec` to find the right path).
+
+---
diff --git a/charts.d/libreswan.chart.sh b/collectors/charts.d.plugin/libreswan/libreswan.chart.sh
index 30632e9ce..6e29f8473 100644
--- a/charts.d/libreswan.chart.sh
+++ b/collectors/charts.d.plugin/libreswan/libreswan.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash disable=SC1117
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2018 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 # _update_every is a special variable - it holds the number of seconds
@@ -60,7 +61,8 @@ libreswan_get() {
 	libreswan_connected_tunnels=()
 
 	# convert the ipsec command output to a shell script
-	# and source it to get the values
+        # and source it to get the values
+        # shellcheck disable=SC1090
 	source <(
 		{
 			libreswan_ipsec whack --status;
@@ -85,6 +87,7 @@ libreswan_check() {
 	require_cmd ipsec || return 1
 
 	# make sure it is libreswan
+	# shellcheck disable=SC2143
 	if [ -z "$(ipsec --version | grep -i libreswan)" ]
 	then
 	    error "ipsec command is not Libreswan. Disabling Libreswan plugin."
@@ -140,7 +143,7 @@ libreswan_update_one() {
 
 	[ -z "${id}" ] && libreswan_create_one "${name}"
 
-	uptime=$(( ${libreswan_now} - ${libreswan_established_add_time[${n}]} ))
+	uptime=$(( libreswan_now - libreswan_established_add_time[${n}] ))
 	[ ${uptime} -lt 0 ] && uptime=0
 
 		# write the result of the work.
diff --git a/conf.d/charts.d/libreswan.conf b/collectors/charts.d.plugin/libreswan/libreswan.conf
index 9b3ee77b7..9b3ee77b7 100644
--- a/conf.d/charts.d/libreswan.conf
+++ b/collectors/charts.d.plugin/libreswan/libreswan.conf
diff --git a/collectors/charts.d.plugin/load_average/Makefile.inc b/collectors/charts.d.plugin/load_average/Makefile.inc
new file mode 100644
index 000000000..e5a481bf4
--- /dev/null
+++ b/collectors/charts.d.plugin/load_average/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += load_average/load_average.chart.sh
+dist_chartsconfig_DATA += load_average/load_average.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += load_average/README.md load_average/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/load_average/README.md b/collectors/charts.d.plugin/load_average/README.md
new file mode 100644
index 000000000..39d3b8189
--- /dev/null
+++ b/collectors/charts.d.plugin/load_average/README.md
@@ -0,0 +1,2 @@
+> THIS MODULE IS OBSOLETE.
+> THE NETDATA DAEMON COLLECTS LOAD AVERAGE BY ITSELF
diff --git a/charts.d/load_average.chart.sh b/collectors/charts.d.plugin/load_average/load_average.chart.sh
index 70d3aec7a..b30cb850f 100644
--- a/charts.d/load_average.chart.sh
+++ b/collectors/charts.d.plugin/load_average/load_average.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash disable=SC2154,SC1072,SC1073,SC2009,SC2162,SC2006,SC2002,SC2086,SC1117
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 load_average_update_every=5
diff --git a/conf.d/charts.d/load_average.conf b/collectors/charts.d.plugin/load_average/load_average.conf
index 68979275f..68979275f 100644
--- a/conf.d/charts.d/load_average.conf
+++ b/collectors/charts.d.plugin/load_average/load_average.conf
diff --git a/plugins.d/loopsleepms.sh.inc b/collectors/charts.d.plugin/loopsleepms.sh.inc
index ef3db192d..bdc032b99 100644
--- a/plugins.d/loopsleepms.sh.inc
+++ b/collectors/charts.d.plugin/loopsleepms.sh.inc
@@ -1,4 +1,5 @@
 # no need for shebang - this file is included from other scripts
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 LOOPSLEEP_DATE="$(which date 2>/dev/null || command -v date 2>/dev/null)"
 if [ -z "$LOOPSLEEP_DATE" ]
@@ -85,11 +86,12 @@ fi
 # -----------------------------------------------------------------------------
 # use read with timeout for sleep
 
-mysleep="mysleep_read"
+mysleep=""
 
 mysleep_fifo="${NETDATA_CACHE_DIR-/tmp}/.netdata_bash_sleep_timer_fifo"
-[ ! -e "${mysleep_fifo}" ] && mkfifo "${mysleep_fifo}"
-[ ! -e "${mysleep_fifo}" ] && mysleep="sleep"
+[ -f "${mysleep_fifo}" ] && rm "${mysleep_fifo}"
+[ ! -p "${mysleep_fifo}" ] && mkfifo "${mysleep_fifo}"
+[ -p "${mysleep_fifo}" ] && mysleep="mysleep_read"
 
 mysleep_read() {
     read -t "${1}" <>"${mysleep_fifo}"
@@ -102,6 +104,52 @@ mysleep_read() {
     fi
 }
 
+# -----------------------------------------------------------------------------
+# use bash loadable module for sleep
+
+mysleep_builtin() {
+    builtin sleep "${1}"
+    ret=$?
+    if [ $ret -ne 0 ]
+        then
+        echo >&2 "$0: Cannot use builtin sleep for sleeping (return code ${ret})."
+        mysleep="sleep"
+        ${mysleep} "${1}"
+    fi
+}
+
+if [ -z "${mysleep}" -a "$((BASH_VERSINFO[0] +0))" -ge 3 -a "${NETDATA_BASH_LOADABLES}" != "DISABLE" ]
+    then
+    # enable modules only for bash version 3+
+
+    for bash_modules_path in ${BASH_LOADABLES_PATH//:/ } "$(pkg-config bash --variable=loadablesdir 2>/dev/null)" "/usr/lib/bash" "/lib/bash" "/lib64/bash" "/usr/local/lib/bash" "/usr/local/lib64/bash"
+    do
+        [ -z "${bash_modules_path}" -o ! -d "${bash_modules_path}" ] && continue
+
+        # check for sleep
+        for bash_module_sleep in "sleep" "sleep.so"
+        do
+            if [ -f "${bash_modules_path}/${bash_module_sleep}" ]
+                then
+                if enable -f "${bash_modules_path}/${bash_module_sleep}" sleep 2>/dev/null
+                    then
+                    mysleep="mysleep_builtin"
+                    # echo >&2 "$0: Using bash loadable ${bash_modules_path}/${bash_module_sleep} for sleep"
+                    break
+                fi
+            fi
+
+        done
+
+        [ ! -z "${mysleep}" ] && break
+    done
+fi
+
+# -----------------------------------------------------------------------------
+# fallback to external sleep
+
+[ -z "${mysleep}" ] && mysleep="sleep"
+
 
 # -----------------------------------------------------------------------------
 # this function is used to sleep a fraction of a second
diff --git a/collectors/charts.d.plugin/mem_apps/Makefile.inc b/collectors/charts.d.plugin/mem_apps/Makefile.inc
new file mode 100644
index 000000000..ea546fb69
--- /dev/null
+++ b/collectors/charts.d.plugin/mem_apps/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += mem_apps/mem_apps.chart.sh
+dist_chartsconfig_DATA += mem_apps/mem_apps.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += mem_apps/README.md mem_apps/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/mem_apps/README.md b/collectors/charts.d.plugin/mem_apps/README.md
new file mode 100644
index 000000000..cd8adf0a2
--- /dev/null
+++ b/collectors/charts.d.plugin/mem_apps/README.md
@@ -0,0 +1,2 @@
+> THIS MODULE IS OBSOLETE.
+> USE APPS.PLUGIN.
diff --git a/charts.d/mem_apps.chart.sh b/collectors/charts.d.plugin/mem_apps/mem_apps.chart.sh
index 3bc65fe24..a13dc71f1 100644
--- a/charts.d/mem_apps.chart.sh
+++ b/collectors/charts.d.plugin/mem_apps/mem_apps.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash disable=SC2154,SC1072,SC1073,SC2009,SC2162,SC2006,SC2002,SC2086,SC1117
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 mem_apps_apps=
diff --git a/conf.d/charts.d/mem_apps.conf b/collectors/charts.d.plugin/mem_apps/mem_apps.conf
index 75d24dc3e..75d24dc3e 100644
--- a/conf.d/charts.d/mem_apps.conf
+++ b/collectors/charts.d.plugin/mem_apps/mem_apps.conf
diff --git a/collectors/charts.d.plugin/mysql/Makefile.inc b/collectors/charts.d.plugin/mysql/Makefile.inc
new file mode 100644
index 000000000..ca02fd078
--- /dev/null
+++ b/collectors/charts.d.plugin/mysql/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += mysql/mysql.chart.sh
+dist_chartsconfig_DATA += mysql/mysql.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += mysql/README.md mysql/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/mysql/README.md b/collectors/charts.d.plugin/mysql/README.md
new file mode 100644
index 000000000..6765b53ab
--- /dev/null
+++ b/collectors/charts.d.plugin/mysql/README.md
@@ -0,0 +1,81 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
+
+# mysql
+
+The plugin will monitor one or more mysql servers
+
+It will produce the following charts:
+
+1. **Bandwidth** in kbps
+ * in
+ * out
+
+2. **Queries** in queries/sec
+ * queries
+ * questions
+ * slow queries
+
+3. **Operations** in operations/sec
+ * opened tables
+ * flush
+ * commit
+ * delete
+ * prepare
+ * read first
+ * read key
+ * read next
+ * read prev
+ * read random
+ * read random next
+ * rollback
+ * save point
+ * update
+ * write
+
+4. **Table Locks** in locks/sec
+ * immediate
+ * waited
+
+5. **Select Issues** in issues/sec
+ * full join
+ * full range join
+ * range
+ * range check
+ * scan
+
+6. **Sort Issues** in issues/sec
+ * merge passes
+ * range
+ * scan
+
+### configuration
+
+You can configure many database servers, like this:
+
+You can provide, per server, the following:
+
+1. a name, anything you like, but keep it short
+2. the mysql command to connect to the server
+3. the mysql command line options to be used for connecting to the server
+
+Here is an example for 2 servers:
+
+```sh
+mysql_opts[server1]="-h server1.example.com"
+mysql_opts[server2]="-h server2.example.com --connect_timeout 2"
+```
+
+The above will use the `mysql` command found in the system path.
+You can also provide a custom mysql command per server, like this:
+
+```sh
+mysql_cmds[server2]="/opt/mysql/bin/mysql"
+```
+
+The above sets the mysql command only for server2. server1 will use the system default.
+
+If no configuration is given, the plugin will attempt to connect to mysql server at localhost.
+
+
+---
diff --git a/charts.d/mysql.chart.sh b/collectors/charts.d.plugin/mysql/mysql.chart.sh
index 1363d01f4..37e8e2a7c 100644
--- a/charts.d/mysql.chart.sh
+++ b/collectors/charts.d.plugin/mysql/mysql.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 # http://dev.mysql.com/doc/refman/5.0/en/server-status-variables.html
@@ -25,7 +26,8 @@ mysql_get() {
 	IFS=$'\t'$'\n'
 	#arr=($(run "${@}" -e "SHOW GLOBAL STATUS WHERE value REGEXP '^[0-9]';" | egrep "^(Bytes|Slow_|Que|Handl|Table|Selec|Sort_|Creat|Conne|Abort|Binlo|Threa|Innod|Qcach|Key_|Open)" ))
 	#arr=($(run "${@}" -N -e "SHOW GLOBAL STATUS;" | egrep "^(Bytes|Slow_|Que|Handl|Table|Selec|Sort_|Creat|Conne|Abort|Binlo|Threa|Innod|Qcach|Key_|Open)[^ ]+\s[0-9]" ))
-	arr=($(run "${@}" -N -e "SHOW GLOBAL STATUS;" | egrep "^(Bytes|Slow_|Que|Handl|Table|Selec|Sort_|Creat|Conne|Abort|Binlo|Threa|Innod|Qcach|Key_|Open)[^[:space:]]+[[:space:]]+[0-9]+" ))
+	# shellcheck disable=SC2207
+	arr=($(run "${@}" -N -e "SHOW GLOBAL STATUS;" | grep -E "^(Bytes|Slow_|Que|Handl|Table|Selec|Sort_|Creat|Conne|Abort|Binlo|Threa|Innod|Qcach|Key_|Open)[^[:space:]]+[[:space:]]+[0-9]+" ))
 	IFS="${oIFS}"
 
 	[ "${#arr[@]}" -lt 3 ] && return 1
@@ -55,6 +57,7 @@ mysql_check() {
 		shift
 	fi
 
+        # shellcheck disable=SC2230
 	[ -z "${mysql_cmd}" ] && mysql_cmd="$(which mysql 2>/dev/null || command -v mysql 2>/dev/null)"
 
 	if [ ${#mysql_opts[@]} -eq 0 ]
@@ -80,16 +83,18 @@ mysql_check() {
 		[ -z "${mysql_cmds[$m]}" ] && mysql_cmds[$m]="$mysql_cmd"
 		if [ -z "${mysql_cmds[$m]}" ]
 			then
-			error "cannot get mysql command for '$m'. Please set mysql_cmds[$m]='/path/to/mysql', in $confd/mysql.conf"
+			# shellcheck disable=SC2154
+			error "cannot get mysql command for '${m}'. Please set mysql_cmds[$m]='/path/to/mysql', in $confd/mysql.conf"
 		fi
 
 		mysql_get "${mysql_cmds[$m]}" ${mysql_opts[$m]}
+		# shellcheck disable=SC2181
 		if [ ! $? -eq 0 ]
 		then
 			error "cannot get global status for '$m'. Please set mysql_opts[$m]='options' to whatever needed to get connected to the mysql server, in $confd/mysql.conf"
-			unset mysql_cmds[$m]
-			unset mysql_opts[$m]
-			unset mysql_ids[$m]
+			unset "mysql_cmds[$m]"
+			unset "mysql_opts[$m]"
+			unset "mysql_ids[$m]"
 			continue
 		fi
 
@@ -98,7 +103,7 @@ mysql_check() {
 
 	if [ ${#mysql_opts[@]} -eq 0 ]
 		then
-		if [ ${unconfigured} -eq 1 -a ${tryroot} -eq 0 ]
+		if [ ${unconfigured} -eq 1 ] && [ ${tryroot} -eq 0 ]
 			then
 			mysql_check tryroot "${@}"
 			return $?
@@ -319,12 +324,13 @@ mysql_update() {
 		x="${mysql_ids[$m]}"
 		mysql_get "${mysql_cmds[$m]}" ${mysql_opts[$m]}
 
+		# shellcheck disable=SC2181
 		if [ $? -ne 0 ]
 			then
-			unset mysql_ids[$m]
-			unset mysql_opts[$m]
-			unset mysql_cmds[$m]
-			error "failed to get values for '$m', disabling it."
+			unset "mysql_ids[$m]"
+			unset "mysql_opts[$m]"
+			unset "mysql_cmds[$m]"
+			error "failed to get values for '${m}', disabling it."
 			continue
 		fi
 
diff --git a/conf.d/charts.d/mysql.conf b/collectors/charts.d.plugin/mysql/mysql.conf
index 683e4af35..683e4af35 100644
--- a/conf.d/charts.d/mysql.conf
+++ b/collectors/charts.d.plugin/mysql/mysql.conf
diff --git a/collectors/charts.d.plugin/nginx/Makefile.inc b/collectors/charts.d.plugin/nginx/Makefile.inc
new file mode 100644
index 000000000..c9d31aada
--- /dev/null
+++ b/collectors/charts.d.plugin/nginx/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += nginx/nginx.chart.sh
+dist_chartsconfig_DATA += nginx/nginx.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += nginx/README.md nginx/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/nginx/README.md b/collectors/charts.d.plugin/nginx/README.md
new file mode 100644
index 000000000..d82951aac
--- /dev/null
+++ b/collectors/charts.d.plugin/nginx/README.md
@@ -0,0 +1,2 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
diff --git a/charts.d/nginx.chart.sh b/collectors/charts.d.plugin/nginx/nginx.chart.sh
index d0df460ac..14dda0832 100644
--- a/charts.d/nginx.chart.sh
+++ b/collectors/charts.d.plugin/nginx/nginx.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 # if this chart is called X.chart.sh, then all functions and global variables
@@ -26,20 +27,21 @@ nginx_reading=0
 nginx_writing=0
 nginx_waiting=0
 nginx_get() {
+	# shellcheck disable=SC2207
 	nginx_response=($(run curl -Ss ${nginx_curl_opts} "${nginx_url}"))
-	[ $? -ne 0 -o "${#nginx_response[@]}" -eq 0 ] && return 1
-
-	if [ "${nginx_response[0]}" != "Active" \
-		 -o "${nginx_response[1]}" != "connections:" \
-		 -o "${nginx_response[3]}" != "server" \
-		 -o "${nginx_response[4]}" != "accepts" \
-		 -o "${nginx_response[5]}" != "handled" \
-		 -o "${nginx_response[6]}" != "requests" \
-		 -o "${nginx_response[10]}" != "Reading:" \
-		 -o "${nginx_response[12]}" != "Writing:" \
-		 -o "${nginx_response[14]}" != "Waiting:" \
-	   ]
-		then
+	# shellcheck disable=SC2181
+	if [ $? -ne 0 ] || [ "${#nginx_response[@]}" -eq 0 ]; then return 1; fi
+
+	if [ "${nginx_response[0]}" != "Active" ] ||\
+	   [ "${nginx_response[1]}" != "connections:" ] ||\
+	   [ "${nginx_response[3]}" != "server" ] ||\
+	   [ "${nginx_response[4]}" != "accepts" ] ||\
+	   [ "${nginx_response[5]}" != "handled" ] ||\
+	   [ "${nginx_response[6]}" != "requests" ] ||\
+	   [ "${nginx_response[10]}" != "Reading:" ] ||\
+	   [ "${nginx_response[12]}" != "Writing:" ] ||\
+	   [ "${nginx_response[14]}" != "Waiting:" ]
+	then
 		error "Invalid response from nginx server: ${nginx_response[*]}"
 		return 1
 	fi
@@ -52,15 +54,14 @@ nginx_get() {
 	nginx_writing="${nginx_response[13]}"
 	nginx_waiting="${nginx_response[15]}"
 
-	if [ -z "${nginx_active_connections}" \
-		-o -z "${nginx_accepts}" \
-		-o -z "${nginx_handled}" \
-		-o -z "${nginx_requests}" \
-		-o -z "${nginx_reading}" \
-		-o -z "${nginx_writing}" \
-		-o -z "${nginx_waiting}" \
-		]
-		then
+	if [ -z "${nginx_active_connections}" ] ||\
+	   [ -z "${nginx_accepts}" ] ||\
+	   [ -z "${nginx_handled}" ] ||\
+	   [ -z "${nginx_requests}" ] ||\
+	   [ -z "${nginx_reading}" ] ||\
+	   [ -z "${nginx_writing}" ] ||\
+	   [ -z "${nginx_waiting}" ]
+	then
 		error "empty values got from nginx server: ${nginx_response[*]}"
 		return 1
 	fi
@@ -72,8 +73,10 @@ nginx_get() {
 nginx_check() {
 
 	nginx_get
+	# shellcheck disable=2181
 	if [ $? -ne 0 ]
-		then
+	then
+		# shellcheck disable=SC2154
 		error "cannot find stub_status on URL '${nginx_url}'. Please set nginx_url='http://nginx.server/stub_status' in $confd/nginx.conf"
 		return 1
 	fi
diff --git a/conf.d/charts.d/nginx.conf b/collectors/charts.d.plugin/nginx/nginx.conf
index c46100a58..c46100a58 100644
--- a/conf.d/charts.d/nginx.conf
+++ b/collectors/charts.d.plugin/nginx/nginx.conf
diff --git a/collectors/charts.d.plugin/nut/Makefile.inc b/collectors/charts.d.plugin/nut/Makefile.inc
new file mode 100644
index 000000000..4fb47145d
--- /dev/null
+++ b/collectors/charts.d.plugin/nut/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += nut/nut.chart.sh
+dist_chartsconfig_DATA += nut/nut.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += nut/README.md nut/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/nut/README.md b/collectors/charts.d.plugin/nut/README.md
new file mode 100644
index 000000000..71906f55a
--- /dev/null
+++ b/collectors/charts.d.plugin/nut/README.md
@@ -0,0 +1,59 @@
+# nut
+
+The plugin will collect UPS data for all UPSes configured in the system.
+
+The following charts will be created:
+
+1. **UPS Charge**
+
+ * percentage changed
+
+2. **UPS Battery Voltage**
+
+ * current voltage
+ * high voltage
+ * low voltage
+ * nominal voltage
+
+3. **UPS Input Voltage**
+
+ * current voltage
+ * fault voltage
+ * nominal voltage
+
+4. **UPS Input Current**
+
+ * nominal current
+
+5. **UPS Input Frequency**
+
+ * current frequency
+ * nominal frequency
+
+6. **UPS Output Voltage**
+
+ * current voltage
+
+7. **UPS Load**
+
+ * current load
+
+8. **UPS Temperature**
+
+ * current temperature
+
+
+### configuration
+
+This is the internal default for `/etc/netdata/nut.conf`
+
+```sh
+# a space separated list of UPS names
+# if empty, the list returned by 'upsc -l' will be used
+nut_ups=
+
+# how frequently to collect UPS data
+nut_update_every=2
+```
+
+---
diff --git a/charts.d/nut.chart.sh b/collectors/charts.d.plugin/nut/nut.chart.sh
index 6137639f9..7e252f325 100644
--- a/charts.d/nut.chart.sh
+++ b/collectors/charts.d.plugin/nut/nut.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016-2017 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 # a space separated list of UPS names
@@ -24,6 +25,7 @@ nut_clients_chart=0
 nut_priority=90000
 
 declare -A nut_ids=()
+declare -A nut_names=()
 
 nut_get_all() {
 	run -t $nut_timeout upsc -l
@@ -54,16 +56,23 @@ nut_check() {
 	for x in $nut_ups
 	do
 		nut_get "$x" >/dev/null
+		# shellcheck disable=SC2181
 		if [ $? -eq 0 ]
+		then
+			if [ ! -z "${nut_names[${x}]}" ]
 			then
-			nut_ids[$x]="$( fixid "$x" )"
+				nut_ids[$x]="$( fixid "${nut_names[${x}]}" )"
+			else
+				nut_ids[$x]="$( fixid "$x" )"
+			fi
 			continue
 		fi
 		error "cannot get information for NUT UPS '$x'."
 	done
 
 	if [ ${#nut_ids[@]} -eq 0 ]
-		then
+	then
+		# shellcheck disable=SC2154
 		error "Cannot find UPSes - please set nut_ups='ups_name' in $confd/nut.conf"
 		return 1
 	fi
@@ -81,38 +90,41 @@ nut_create() {
 CHART nut_$x.charge '' "UPS Charge" "percentage" ups nut.charge area $((nut_priority + 1)) $nut_update_every
 DIMENSION battery_charge charge absolute 1 100
 
-CHART nut_$x.battery_voltage '' "UPS Battery Voltage" "Volts" ups nut.battery.voltage line $((nut_priority + 2)) $nut_update_every
+CHART nut_$x.runtime '' "UPS Runtime" "seconds" ups nut.runtime area $((nut_priority + 2)) $nut_update_every
+DIMENSION battery_runtime runtime absolute 1 100
+
+CHART nut_$x.battery_voltage '' "UPS Battery Voltage" "Volts" ups nut.battery.voltage line $((nut_priority + 3)) $nut_update_every
 DIMENSION battery_voltage voltage absolute 1 100
 DIMENSION battery_voltage_high high absolute 1 100
 DIMENSION battery_voltage_low low absolute 1 100
 DIMENSION battery_voltage_nominal nominal absolute 1 100
 
-CHART nut_$x.input_voltage '' "UPS Input Voltage" "Volts" input nut.input.voltage line $((nut_priority + 3)) $nut_update_every
+CHART nut_$x.input_voltage '' "UPS Input Voltage" "Volts" input nut.input.voltage line $((nut_priority + 4)) $nut_update_every
 DIMENSION input_voltage voltage absolute 1 100
 DIMENSION input_voltage_fault fault absolute 1 100
 DIMENSION input_voltage_nominal nominal absolute 1 100
 
-CHART nut_$x.input_current '' "UPS Input Current" "Ampere" input nut.input.current line $((nut_priority + 4)) $nut_update_every
+CHART nut_$x.input_current '' "UPS Input Current" "Ampere" input nut.input.current line $((nut_priority + 5)) $nut_update_every
 DIMENSION input_current_nominal nominal absolute 1 100
 
-CHART nut_$x.input_frequency '' "UPS Input Frequency" "Hz" input nut.input.frequency line $((nut_priority + 5)) $nut_update_every
+CHART nut_$x.input_frequency '' "UPS Input Frequency" "Hz" input nut.input.frequency line $((nut_priority + 6)) $nut_update_every
 DIMENSION input_frequency frequency absolute 1 100
 DIMENSION input_frequency_nominal nominal absolute 1 100
 
-CHART nut_$x.output_voltage '' "UPS Output Voltage" "Volts" output nut.output.voltage line $((nut_priority + 6)) $nut_update_every
+CHART nut_$x.output_voltage '' "UPS Output Voltage" "Volts" output nut.output.voltage line $((nut_priority + 7)) $nut_update_every
 DIMENSION output_voltage voltage absolute 1 100
 
 CHART nut_$x.load '' "UPS Load" "percentage" ups nut.load area $((nut_priority)) $nut_update_every
 DIMENSION load load absolute 1 100
 
-CHART nut_$x.temp '' "UPS Temperature" "temperature" ups nut.temperature line $((nut_priority + 7)) $nut_update_every
+CHART nut_$x.temp '' "UPS Temperature" "temperature" ups nut.temperature line $((nut_priority + 8)) $nut_update_every
 DIMENSION temp temp absolute 1 100
 EOF
 
 	if [ "${nut_clients_chart}" = "1" ]
 		then
 		cat <<EOF2
-CHART nut_$x.clients '' "UPS Connected Clients" "clients" ups nut.clients area $((nut_priority + 8)) $nut_update_every
+CHART nut_$x.clients '' "UPS Connected Clients" "clients" ups nut.clients area $((nut_priority + 9)) $nut_update_every
 DIMENSION clients '' absolute 1 1
 EOF2
 	fi
@@ -138,6 +150,7 @@ nut_update() {
 		nut_get "$i" | awk "
 BEGIN {
 	battery_charge = 0;
+    battery_runtime = 0;
 	battery_voltage = 0;
 	battery_voltage_high = 0;
 	battery_voltage_low = 0;
@@ -155,6 +168,7 @@ BEGIN {
 	do_clients = ${nut_clients_chart};
 }
 /^battery.charge: .*/			{ battery_charge = \$2 * 100 };
+/^battery.runtime: .*/          { battery_runtime = \$2 * 100 };
 /^battery.voltage: .*/			{ battery_voltage = \$2 * 100 };
 /^battery.voltage.high: .*/		{ battery_voltage_high = \$2 * 100 };
 /^battery.voltage.low: .*/		{ battery_voltage_low = \$2 * 100 };
@@ -174,6 +188,10 @@ END {
 	print \"SET battery_charge = \" battery_charge;
 	print \"END\"
 
+    print \"BEGIN nut_$x.runtime $1\";
+    print \"SET battery_runtime = \" battery_runtime;
+    print \"END\"
+
 	print \"BEGIN nut_$x.battery_voltage $1\";
 	print \"SET battery_voltage = \" battery_voltage;
 	print \"SET battery_voltage_high = \" battery_voltage_high;
@@ -214,7 +232,8 @@ END {
 		print \"END\"
 	}
 }"
-		[ $? -ne 0 ] && unset nut_ids[$i] && error "failed to get values for '$i', disabling it."
+		# shellcheck disable=2181
+		[ $? -ne 0 ] && unset "nut_ids[$i]" && error "failed to get values for '$i', disabling it."
 	done
 
 	[ ${#nut_ids[@]} -eq 0 ] && error "no UPSes left active." && return 1
diff --git a/conf.d/charts.d/nut.conf b/collectors/charts.d.plugin/nut/nut.conf
index d477ddd34..b95ad9048 100644
--- a/conf.d/charts.d/nut.conf
+++ b/collectors/charts.d.plugin/nut/nut.conf
@@ -9,6 +9,11 @@
 # if empty, the list returned by 'upsc -l' will be used
 #nut_ups=
 
+# each line represents an alias for one UPS
+# if empty, the FQDN will be used
+#nut_names["FQDN1"]="alias"
+#nut_names["FQDN2"]="alias"
+
 # how much time in seconds, to wait for nut to respond
 #nut_timeout=2
 
diff --git a/collectors/charts.d.plugin/opensips/Makefile.inc b/collectors/charts.d.plugin/opensips/Makefile.inc
new file mode 100644
index 000000000..a7b5d3a92
--- /dev/null
+++ b/collectors/charts.d.plugin/opensips/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += opensips/opensips.chart.sh
+dist_chartsconfig_DATA += opensips/opensips.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += opensips/README.md opensips/Makefile.inc
+
diff --git a/python.d/python_modules/bases/__init__.py b/collectors/charts.d.plugin/opensips/README.md
index e69de29bb..e69de29bb 100644
--- a/python.d/python_modules/bases/__init__.py
+++ b/collectors/charts.d.plugin/opensips/README.md
diff --git a/charts.d/opensips.chart.sh b/collectors/charts.d.plugin/opensips/opensips.chart.sh
index 2a0249dae..c227bd4f2 100644
--- a/charts.d/opensips.chart.sh
+++ b/collectors/charts.d.plugin/opensips/opensips.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash disable=SC1117,SC2154,SC2086
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 opensips_opts="fifo get_statistics all"
@@ -34,8 +35,10 @@ opensips_check() {
 	fi
 
 	# check once if the command works
-	local x="$(opensips_get_stats | grep "^opensips_core_")"
-	if [ ! $? -eq 0 -o -z "$x" ]
+	local x
+	x="$(opensips_get_stats | grep "^opensips_core_")"
+	# shellcheck disable=SC2181
+	if [ ! $? -eq 0 ] || [ -z "$x" ]
 	then
 		error "cannot get global status. Please set opensips_opts='options' whatever needed to get connected to opensips server, in $confd/opensips.conf"
 		return 1
@@ -218,6 +221,7 @@ opensips_update() {
 
 	opensips_command_failed=0
 	eval "local $(opensips_get_stats)"
+	# shellcheck disable=SC2181
 	[ $? -ne 0 ] && return 1
 
 	[ $opensips_command_failed -eq 1 ] && error "failed to get values, disabling." && return 1
diff --git a/conf.d/charts.d/opensips.conf b/collectors/charts.d.plugin/opensips/opensips.conf
index e25111dce..e25111dce 100644
--- a/conf.d/charts.d/opensips.conf
+++ b/collectors/charts.d.plugin/opensips/opensips.conf
diff --git a/collectors/charts.d.plugin/phpfpm/Makefile.inc b/collectors/charts.d.plugin/phpfpm/Makefile.inc
new file mode 100644
index 000000000..56bff6102
--- /dev/null
+++ b/collectors/charts.d.plugin/phpfpm/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += phpfpm/phpfpm.chart.sh
+dist_chartsconfig_DATA += phpfpm/phpfpm.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += phpfpm/README.md phpfpm/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/phpfpm/README.md b/collectors/charts.d.plugin/phpfpm/README.md
new file mode 100644
index 000000000..d82951aac
--- /dev/null
+++ b/collectors/charts.d.plugin/phpfpm/README.md
@@ -0,0 +1,2 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
diff --git a/charts.d/phpfpm.chart.sh b/collectors/charts.d.plugin/phpfpm/phpfpm.chart.sh
index a3c69b6f0..1af7910bc 100644
--- a/charts.d/phpfpm.chart.sh
+++ b/collectors/charts.d.plugin/phpfpm/phpfpm.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 # Contributed by @safeie with PR #276
 
@@ -36,8 +37,12 @@ phpfpm_slow_requests=0
 phpfpm_get() {
 	local opts="${1}" url="${2}"
 
+	# shellcheck disable=SC2207,2086
 	phpfpm_response=($(run curl -Ss ${opts} "${url}"))
-	[ $? -ne 0 -o "${#phpfpm_response[@]}" -eq 0 ] && return 1
+	# shellcheck disable=SC2181
+	if [ $? -ne 0 ] || [ "${#phpfpm_response[@]}" -eq 0 ]; then
+		return 1
+	fi
 
 	if [[ "${phpfpm_response[0]}" != "pool:" \
 		|| "${phpfpm_response[2]}" != "process" \
@@ -104,9 +109,11 @@ phpfpm_check() {
 	for m in "${!phpfpm_urls[@]}"
 	do
 		phpfpm_get "${phpfpm_curl_opts[$m]}" "${phpfpm_urls[$m]}"
+		# shellcheck disable=SC2181
 		if [ $? -ne 0 ]; then
-			error "cannot find status on URL '${phpfpm_url[$m]}'. Please set phpfpm_urls[$m]='http://localhost/status' in $confd/phpfpm.conf"
-			unset phpfpm_urls[$m]
+			# shellcheck disable=SC2154
+			error "cannot find status on URL '${phpfpm_urls[$m]}'. Please set phpfpm_urls[$m]='http://localhost/status' in $confd/phpfpm.conf"
+			unset "phpfpm_urls[$m]"
 			continue
 		fi
 	done
@@ -162,6 +169,7 @@ phpfpm_update() {
 	for m in "${!phpfpm_urls[@]}"
 	do
 		phpfpm_get "${phpfpm_curl_opts[$m]}" "${phpfpm_urls[$m]}"
+		# shellcheck disable=SC2181
 		if [ $? -ne 0 ]; then
 			continue
 		fi
@@ -188,7 +196,3 @@ EOF
 
 	return 0
 }
-
-phpfpm_check
-phpfpm_create
-phpfpm_update
diff --git a/conf.d/charts.d/phpfpm.conf b/collectors/charts.d.plugin/phpfpm/phpfpm.conf
index e4dd0231b..e4dd0231b 100644
--- a/conf.d/charts.d/phpfpm.conf
+++ b/collectors/charts.d.plugin/phpfpm/phpfpm.conf
diff --git a/collectors/charts.d.plugin/postfix/Makefile.inc b/collectors/charts.d.plugin/postfix/Makefile.inc
new file mode 100644
index 000000000..6e148352d
--- /dev/null
+++ b/collectors/charts.d.plugin/postfix/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += postfix/postfix.chart.sh
+dist_chartsconfig_DATA += postfix/postfix.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += postfix/README.md postfix/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/postfix/README.md b/collectors/charts.d.plugin/postfix/README.md
new file mode 100644
index 000000000..5fc265d56
--- /dev/null
+++ b/collectors/charts.d.plugin/postfix/README.md
@@ -0,0 +1,26 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
+
+# postfix
+
+The plugin will collect the postfix queue size.
+
+It will create two charts:
+
+1. **queue size in emails**
+2. **queue size in KB**
+
+### configuration
+
+This is the internal default for `/etc/netdata/postfix.conf`
+
+```sh
+# the postqueue command
+# if empty, it will use the one found in the system path
+postfix_postqueue=
+
+# how frequently to collect queue size
+postfix_update_every=15
+```
+
+---
diff --git a/charts.d/postfix.chart.sh b/collectors/charts.d.plugin/postfix/postfix.chart.sh
index 85604fcbe..8cb938ce1 100644
--- a/charts.d/postfix.chart.sh
+++ b/collectors/charts.d.plugin/postfix/postfix.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash disable=SC1117
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 # the postqueue command
@@ -21,13 +22,15 @@ postfix_check() {
 	#  - 1 to disable the chart
 
 	# try to find the postqueue executable
-	if [ -z "$postfix_postqueue" -o ! -x "$postfix_postqueue" ]
+	if [ -z "$postfix_postqueue" ] || [ ! -x "$postfix_postqueue" ]
 	then
+		# shellcheck disable=SC2230
 		postfix_postqueue="$(which postqueue 2>/dev/null || command -v postqueue 2>/dev/null)"
 	fi
 
-	if [ -z "$postfix_postqueue" -o ! -x  "$postfix_postqueue" ]
+	if [ -z "$postfix_postqueue" ] || [ ! -x  "$postfix_postqueue" ]
 	then
+		# shellcheck disable=SC2154
 		error "cannot find postqueue. Please set 'postfix_postqueue=/path/to/postqueue' in $confd/postfix.conf"
 		return 1
 	fi
@@ -67,10 +70,10 @@ postfix_update() {
 	postfix_q_emails=0
 	postfix_q_size=0
 
-	eval "$(run $postfix_postqueue -p |\
+	eval "$(run "$postfix_postqueue" -p |\
 		grep "^--" |\
 		sed -e "s/-- \([0-9]\+\) Kbytes in \([0-9]\+\) Requests.$/local postfix_q_size=\1\nlocal postfix_q_emails=\2/g" |\
-		egrep "^local postfix_q_(emails|size)=[0-9]+$")"
+		grep -E "^local postfix_q_(emails|size)=[0-9]+$")"
 
 	# write the result of the work.
 	cat <<VALUESEOF
diff --git a/conf.d/charts.d/postfix.conf b/collectors/charts.d.plugin/postfix/postfix.conf
index b77817bd6..b77817bd6 100644
--- a/conf.d/charts.d/postfix.conf
+++ b/collectors/charts.d.plugin/postfix/postfix.conf
diff --git a/collectors/charts.d.plugin/sensors/Makefile.inc b/collectors/charts.d.plugin/sensors/Makefile.inc
new file mode 100644
index 000000000..f466a1b62
--- /dev/null
+++ b/collectors/charts.d.plugin/sensors/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += sensors/sensors.chart.sh
+dist_chartsconfig_DATA += sensors/sensors.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += sensors/README.md sensors/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/sensors/README.md b/collectors/charts.d.plugin/sensors/README.md
new file mode 100644
index 000000000..ddc3650d6
--- /dev/null
+++ b/collectors/charts.d.plugin/sensors/README.md
@@ -0,0 +1,52 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
+
+> Unlike the python one, this module can collect temperature on RPi.
+
+# sensors
+
+The plugin will provide charts for all configured system sensors
+
+> This plugin is reading sensors directly from the kernel.
+> The `lm-sensors` package is able to perform calculations on the
+> kernel provided values, this plugin will not perform.
+> So, the values graphed, are the raw hardware values of the sensors.
+
+The plugin will create netdata charts for:
+
+1. **Temperature**
+2. **Voltage**
+3. **Current**
+4. **Power**
+5. **Fans Speed**
+6. **Energy**
+7. **Humidity**
+
+One chart for every sensor chip found and each of the above will be created.
+
+### configuration
+
+This is the internal default for `/etc/netdata/sensors.conf`
+
+```sh
+# the directory the kernel keeps sensor data
+sensors_sys_dir="${NETDATA_HOST_PREFIX}/sys/devices"
+
+# how deep in the tree to check for sensor data
+sensors_sys_depth=10
+
+# if set to 1, the script will overwrite internal
+# script functions with code generated ones
+# leave to 1, is faster
+sensors_source_update=1
+
+# how frequently to collect sensor data
+# the default is to collect it at every iteration of charts.d
+sensors_update_every=
+
+# array of sensors which are excluded
+# the default is to include all
+sensors_excluded=()
+```
+
+---
diff --git a/charts.d/sensors.chart.sh b/collectors/charts.d.plugin/sensors/sensors.chart.sh
index f21248da1..54368f1e0 100644
--- a/charts.d/sensors.chart.sh
+++ b/collectors/charts.d.plugin/sensors/sensors.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 # sensors docs
@@ -32,13 +33,14 @@ sensors_priority=90000
 declare -A sensors_excluded=()
 
 sensors_find_all_files() {
-	find $1 -maxdepth $sensors_sys_depth -name \*_input -o -name temp 2>/dev/null
+	find "$1" -maxdepth $sensors_sys_depth -name \*_input -o -name temp 2>/dev/null
 }
 
 sensors_find_all_dirs() {
-	sensors_find_all_files $1 | while read
+	# shellcheck disable=SC2162
+	sensors_find_all_files "$1" | while read
 	do
-		dirname $REPLY
+		dirname "$REPLY"
 	done | sort -u
 }
 
@@ -49,7 +51,7 @@ sensors_check() {
 	#  - 0 to enable the chart
 	#  - 1 to disable the chart
 
-	[ -z "$( sensors_find_all_files $sensors_sys_dir )" ] && error "no sensors found in '$sensors_sys_dir'." && return 1
+	[ -z "$( sensors_find_all_files "$sensors_sys_dir" )" ] && error "no sensors found in '$sensors_sys_dir'." && return 1
 	return 0
 }
 
@@ -57,15 +59,15 @@ sensors_check_files() {
 	# we only need sensors that report a non-zero value
 	# also remove not needed sensors
 
-	local f= v= excluded=
-	for f in $*
+	local f v excluded
+	for f in "$@"
 	do
 		[ ! -f "$f" ] && continue
-		for ex in ${sensors_excluded[@]}; do
+		for ex in "${sensors_excluded[@]}"; do
 			[[ $f =~ .*$ex$ ]] && excluded='1' && break
 		done
 
-		[ "$excluded" != "1" ] && v="$( cat $f )" || v=0
+		[ "$excluded" != "1" ] && v="$( cat "$f" )" || v=0
 		v=$(( v + 1 - 1 ))
 		[ $v -ne 0 ] && echo "$f" && continue
 		excluded=
@@ -78,14 +80,15 @@ sensors_check_temp_type() {
 	# valid temp types are 1 to 6
 	# disabled sensors have the value 0
 
-	local f= t= v=
-	for f in $*
+	local f t v
+	for f in "$@"
 	do
-		t=$( echo $f | sed "s|_input$|_type|g" )
+		# shellcheck disable=SC2001
+		t=$( echo "$f" | sed "s|_input$|_type|g" )
 		[ "$f" = "$t" ] && echo "$f" && continue
 		[ ! -f "$t" ] && echo "$f" && continue
 
-		v="$( cat $t )"
+		v="$( cat "$t" )"
 		v=$(( v + 1 - 1 ))
 		[ $v -ne 0 ] && echo "$f" && continue
 
@@ -95,34 +98,34 @@ sensors_check_temp_type() {
 
 # _create is called once, to create the charts
 sensors_create() {
-	local path= dir= name= x= file= lfile= labelname= labelid= device= subsystem= id= type= mode= files= multiplier= divisor=
+	local path dir name x file lfile labelname device subsystem id type mode files multiplier divisor
 
 	# we create a script with the source of the
 	# sensors_update() function
 	# - the highest speed we can achieve -
-	[ $sensors_source_update -eq 1 ] && echo >$TMP_DIR/sensors.sh "sensors_update() {"
+	[ $sensors_source_update -eq 1 ] && echo >"$TMP_DIR/sensors.sh" "sensors_update() {"
 
-	for path in $( sensors_find_all_dirs $sensors_sys_dir | sort -u )
+	for path in $( sensors_find_all_dirs "$sensors_sys_dir" | sort -u )
 	do
-		dir=$( basename $path )
+		dir=$( basename "$path" )
 		device=
 		subsystem=
 		id=
 		type=
 		name=
 
-		[ -h $path/device ] && device=$( readlink -f $path/device )
-		[ ! -z "$device" ] && device=$( basename $device )
+		[ -h "$path/device" ] && device=$( readlink -f "$path/device" )
+		[ ! -z "$device" ] && device=$( basename "$device" )
 		[ -z "$device" ] && device="$dir"
 
-		[ -h $path/subsystem ] && subsystem=$( readlink -f $path/subsystem )
-		[ ! -z "$subsystem" ] && subsystem=$( basename $subsystem )
+		[ -h "$path/subsystem" ] && subsystem=$( readlink -f "$path/subsystem" )
+		[ ! -z "$subsystem" ] && subsystem=$( basename "$subsystem" )
 		[ -z "$subsystem" ] && subsystem="$dir"
 
-		[ -f $path/name ] && name=$( cat $path/name )
+		[ -f "$path/name" ] && name=$( cat "$path/name" )
 		[ -z "$name" ] && name="$dir"
 
-		[ -f $path/type ] && type=$( cat $path/type )
+		[ -f "$path/type" ] && type=$( cat "$path/type" )
 		[ -z "$type" ] && type="$dir"
 
 		id="$( fixid "$device.$subsystem.$dir" )"
@@ -138,66 +141,66 @@ sensors_create() {
 
 			case $mode in
 				temperature)
-					files="$( ls $path/temp*_input 2>/dev/null; ls $path/temp 2>/dev/null )"
-					files="$( sensors_check_files $files )"
-					files="$( sensors_check_temp_type $files )"
+					files="$( ls "$path"/temp*_input 2>/dev/null; ls "$path/temp" 2>/dev/null )"
+					files="$( sensors_check_files "$files" )"
+					files="$( sensors_check_temp_type "$files" )"
 					[ -z "$files" ] && continue
 					echo "CHART sensors.temp_$id '' '$name Temperature' 'Celsius' 'temperature' 'sensors.temp' line $((sensors_priority + 1)) $sensors_update_every"
-					echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.temp_$id \$1\""
+					echo >>"$TMP_DIR/sensors.sh" "echo \"BEGIN sensors.temp_$id \$1\""
 					divisor=1000
 					;;
 
 				voltage)
-					files="$( ls $path/in*_input 2>/dev/null )"
-					files="$( sensors_check_files $files )"
+					files="$( ls "$path"/in*_input 2>/dev/null )"
+					files="$( sensors_check_files "$files" )"
 					[ -z "$files" ] && continue
 					echo "CHART sensors.volt_$id '' '$name Voltage' 'Volts' 'voltage' 'sensors.volt' line $((sensors_priority + 2)) $sensors_update_every"
-					echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.volt_$id \$1\""
+					echo >>"$TMP_DIR/sensors.sh" "echo \"BEGIN sensors.volt_$id \$1\""
 					divisor=1000
 					;;
 
 				current)
-					files="$( ls $path/curr*_input 2>/dev/null )"
-					files="$( sensors_check_files $files )"
+					files="$( ls "$path"/curr*_input 2>/dev/null )"
+					files="$( sensors_check_files "$files" )"
 					[ -z "$files" ] && continue
 					echo "CHART sensors.curr_$id '' '$name Current' 'Ampere' 'current' 'sensors.curr' line $((sensors_priority + 3)) $sensors_update_every"
-					echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.curr_$id \$1\""
+					echo >>"$TMP_DIR/sensors.sh" "echo \"BEGIN sensors.curr_$id \$1\""
 					divisor=1000
 					;;
 
 				power)
-					files="$( ls $path/power*_input 2>/dev/null )"
-					files="$( sensors_check_files $files )"
+					files="$( ls "$path"/power*_input 2>/dev/null )"
+					files="$( sensors_check_files "$files" )"
 					[ -z "$files" ] && continue
 					echo "CHART sensors.power_$id '' '$name Power' 'Watt' 'power' 'sensors.power' line $((sensors_priority + 4)) $sensors_update_every"
-					echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.power_$id \$1\""
+					echo >>"$TMP_DIR/sensors.sh" "echo \"BEGIN sensors.power_$id \$1\""
 					divisor=1000000
 					;;
 
 				fans)
-					files="$( ls $path/fan*_input 2>/dev/null )"
-					files="$( sensors_check_files $files )"
+					files="$( ls "$path"/fan*_input 2>/dev/null )"
+					files="$( sensors_check_files "$files" )"
 					[ -z "$files" ] && continue
 					echo "CHART sensors.fan_$id '' '$name Fans Speed' 'Rotations / Minute' 'fans' 'sensors.fans' line $((sensors_priority + 5)) $sensors_update_every"
-					echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.fan_$id \$1\""
+					echo >>"$TMP_DIR/sensors.sh" "echo \"BEGIN sensors.fan_$id \$1\""
 					;;
 
 				energy)
-					files="$( ls $path/energy*_input 2>/dev/null )"
-					files="$( sensors_check_files $files )"
+					files="$( ls "$path"/energy*_input 2>/dev/null )"
+					files="$( sensors_check_files "$files" )"
 					[ -z "$files" ] && continue
 					echo "CHART sensors.energy_$id '' '$name Energy' 'Joule' 'energy' 'sensors.energy' areastack $((sensors_priority + 6)) $sensors_update_every"
-					echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.energy_$id \$1\""
+					echo >>"$TMP_DIR/sensors.sh" "echo \"BEGIN sensors.energy_$id \$1\""
 					algorithm="incremental"
 					divisor=1000000
 					;;
 
 				humidity)
-					files="$( ls $path/humidity*_input 2>/dev/null )"
-					files="$( sensors_check_files $files )"
+					files="$( ls "$path"/humidity*_input 2>/dev/null )"
+					files="$( sensors_check_files "$files" )"
 					[ -z "$files" ] && continue
 					echo "CHART sensors.humidity_$id '' '$name Humidity' 'Percent' 'humidity' 'sensors.humidity' line $((sensors_priority + 7)) $sensors_update_every"
-					echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.humidity_$id \$1\""
+					echo >>"$TMP_DIR/sensors.sh" "echo \"BEGIN sensors.humidity_$id \$1\""
 					divisor=1000
 					;;
 
@@ -210,26 +213,27 @@ sensors_create() {
 			do
 				file="$x"
 				fid="$( fixid "$file" )"
-				lfile="$( basename $file | sed "s|_input$|_label|g" )"
-				labelname="$( basename $file | sed "s|_input$||g" )"
+				lfile="$( basename "$file" | sed "s|_input$|_label|g" )"
+				labelname="$( basename "$file" | sed "s|_input$||g" )"
 
-				if [ ! "$path/$lfile" = "$file" -a -f "$path/$lfile" ]
-					then
+				if [ ! "$path/$lfile" = "$file" ] && [ -f "$path/$lfile" ]
+				then
 					labelname="$( cat "$path/$lfile" )"
 				fi
 
 				echo "DIMENSION $fid '$labelname' $algorithm $multiplier $divisor"
-				echo >>$TMP_DIR/sensors.sh "echo \"SET $fid = \"\$(< $file )"
+				echo >>"$TMP_DIR/sensors.sh" "echo \"SET $fid = \"\$(< $file )"
 			done
 
-			echo >>$TMP_DIR/sensors.sh "echo END"
+			echo >>"$TMP_DIR/sensors.sh" "echo END"
 		done
 	done
 
-	[ $sensors_source_update -eq 1 ] && echo >>$TMP_DIR/sensors.sh "}"
+	[ $sensors_source_update -eq 1 ] && echo >>"$TMP_DIR/sensors.sh" "}"
 
 	# ok, load the function sensors_update() we created
-	[ $sensors_source_update -eq 1 ] && . $TMP_DIR/sensors.sh
+	# shellcheck source=/dev/null
+	[ $sensors_source_update -eq 1 ] && . "$TMP_DIR/sensors.sh"
 
 	return 0
 }
@@ -243,7 +247,8 @@ sensors_update() {
 	# for each dimension
 	# remember: KEEP IT SIMPLE AND SHORT
 
-	[ $sensors_source_update -eq 0 ] && . $TMP_DIR/sensors.sh $1
+	# shellcheck source=/dev/null
+	[ $sensors_source_update -eq 0 ] && . "$TMP_DIR/sensors.sh" "$1"
 
 	return 0
 }
diff --git a/conf.d/charts.d/sensors.conf b/collectors/charts.d.plugin/sensors/sensors.conf
index bcb28807d..bcb28807d 100644
--- a/conf.d/charts.d/sensors.conf
+++ b/collectors/charts.d.plugin/sensors/sensors.conf
diff --git a/collectors/charts.d.plugin/squid/Makefile.inc b/collectors/charts.d.plugin/squid/Makefile.inc
new file mode 100644
index 000000000..ad470d88c
--- /dev/null
+++ b/collectors/charts.d.plugin/squid/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += squid/squid.chart.sh
+dist_chartsconfig_DATA += squid/squid.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += squid/README.md squid/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/squid/README.md b/collectors/charts.d.plugin/squid/README.md
new file mode 100644
index 000000000..0934ccfcf
--- /dev/null
+++ b/collectors/charts.d.plugin/squid/README.md
@@ -0,0 +1,66 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
+
+
+# squid
+
+The plugin will monitor a squid server.
+
+It will produce 4 charts:
+
+1. **Squid Client Bandwidth** in kbps
+
+ * in
+ * out
+ * hits
+
+2. **Squid Client Requests** in requests/sec
+
+ * requests
+ * hits
+ * errors
+
+3. **Squid Server Bandwidth** in kbps
+
+ * in
+ * out
+
+4. **Squid Server Requests** in requests/sec
+
+ * requests
+ * errors
+
+### autoconfig
+
+The plugin will by itself detect squid servers running on
+localhost, on ports 3128 or 8080.
+
+It will attempt to download URLs in the form:
+
+- `cache_object://HOST:PORT/counters`
+- `/squid-internal-mgr/counters`
+
+If any succeeds, it will use this.
+
+### configuration
+
+If you need to configure it by hand, create the file
+`/etc/netdata/squid.conf` with the following variables:
+
+- `squid_host=IP` the IP of the squid host
+- `squid_port=PORT` the port the squid is listening
+- `squid_url="URL"` the URL with the statistics to be fetched from squid
+- `squid_timeout=SECONDS` how much time we should wait for squid to respond
+- `squid_update_every=SECONDS` the frequency of the data collection
+
+Example `/etc/netdata/squid.conf`:
+
+```sh
+squid_host=127.0.0.1
+squid_port=3128
+squid_url="cache_object://127.0.0.1:3128/counters"
+squid_timeout=2
+squid_update_every=5
+```
+
+---
diff --git a/charts.d/squid.chart.sh b/collectors/charts.d.plugin/squid/squid.chart.sh
index 2c19c35d5..cf5d1d78a 100644
--- a/charts.d/squid.chart.sh
+++ b/collectors/charts.d.plugin/squid/squid.chart.sh
@@ -1,21 +1,21 @@
+# shellcheck shell=bash disable=SC2154
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 
 squid_host=
 squid_port=
 squid_url=
-squid_timeout=2
 squid_update_every=2
 squid_priority=60000
 
 squid_get_stats_internal() {
 	local host="$1" port="$2" url="$3"
-	run squidclient -h $host -p $port $url
+	run squidclient -h "$host" -p "$port" "$url"
 }
 
 squid_get_stats() {
@@ -31,7 +31,7 @@ squid_autodetect() {
 		do
 			x=$(squid_get_stats_internal "$host" "$port" "$url" | grep client_http.requests)
 			if [ ! -z "$x" ]
-				then
+			then
 				squid_host="$host"
 				squid_port="$port"
 				squid_url="$url"
@@ -50,14 +50,16 @@ squid_check() {
 	require_cmd sed || return 1
 	require_cmd egrep || return 1
 
-	if [ -z "$squid_host" -o -z "$squid_port" -o -z "$squid_url" ]
-		then
+	if [ -z "$squid_host" ] || [ -z "$squid_port" ] || [ -z "$squid_url" ]
+	then
 		squid_autodetect || return 1
 	fi
 
 	# check once if the url works
-	local x="$(squid_get_stats | grep client_http.requests)"
-	if [ ! $? -eq 0 -o -z "$x" ]
+	local x
+	x="$(squid_get_stats | grep client_http.requests)"
+	# shellcheck disable=SC2181
+	if [ ! $? -eq 0 ] || [ -z "$x" ]
 	then
 		error "cannot fetch URL '$squid_url' by connecting to $squid_host:$squid_port. Please set squid_url='url' and squid_host='host' and squid_port='port' in $confd/squid.conf"
 		return 1
@@ -111,9 +113,10 @@ squid_update() {
 	# prepare the script and always grep at the end the lines that are usefull, so that
 	# even if something goes wrong, no other code can be executed
 
+	# shellcheck disable=SC1117
 	eval "$(squid_get_stats |\
 		 sed -e "s/ \+/ /g" -e "s/\./_/g" -e "s/^\([a-z0-9_]\+\) *= *\([0-9]\+\)$/local squid_\1=\2/g" |\
-		egrep "^local squid_(client_http|server_all)_[a-z0-9_]+=[0-9]+$")"
+		grep -E "^local squid_(client_http|server_all)_[a-z0-9_]+=[0-9]+$")"
 
 	# write the result of the work.
 	cat <<VALUESEOF
diff --git a/conf.d/charts.d/squid.conf b/collectors/charts.d.plugin/squid/squid.conf
index 19e928f25..19e928f25 100644
--- a/conf.d/charts.d/squid.conf
+++ b/collectors/charts.d.plugin/squid/squid.conf
diff --git a/collectors/charts.d.plugin/tomcat/Makefile.inc b/collectors/charts.d.plugin/tomcat/Makefile.inc
new file mode 100644
index 000000000..ef05b1953
--- /dev/null
+++ b/collectors/charts.d.plugin/tomcat/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += tomcat/tomcat.chart.sh
+dist_chartsconfig_DATA += tomcat/tomcat.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += tomcat/README.md tomcat/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/tomcat/README.md b/collectors/charts.d.plugin/tomcat/README.md
new file mode 100644
index 000000000..d82951aac
--- /dev/null
+++ b/collectors/charts.d.plugin/tomcat/README.md
@@ -0,0 +1,2 @@
+> THIS MODULE IS OBSOLETE.
+> USE THE PYTHON ONE - IT SUPPORTS MULTIPLE JOBS AND IT IS MORE EFFICIENT
diff --git a/charts.d/tomcat.chart.sh b/collectors/charts.d.plugin/tomcat/tomcat.chart.sh
index 4ea6ae683..294487b8b 100644
--- a/charts.d/tomcat.chart.sh
+++ b/collectors/charts.d.plugin/tomcat/tomcat.chart.sh
@@ -1,9 +1,10 @@
+# shellcheck shell=bash
 # no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
 #
 # Contributed by @jgeromero with PR #277
 
@@ -46,6 +47,7 @@ tomcat_check() {
 	fi
 	if [ -z "${tomcat_user}" ]; then
 		# check backwards compatibility
+		# shellcheck disable=SC2154
 		if [ -z "${tomcatUser}" ]; then
     	  	error "tomcat user is unset or set to the empty string"
 			return 1
@@ -55,6 +57,7 @@ tomcat_check() {
 	fi
 	if [ -z "${tomcat_password}" ]; then
 		# check backwards compatibility
+		# shellcheck disable=SC2154
 		if [ -z "${tomcatPassword}" ]; then
 	    	error "tomcat password is unset or set to the empty string"
 			return 1
@@ -65,6 +68,7 @@ tomcat_check() {
 
 	# check if we can get to tomcat's status page
 	tomcat_get
+	# shellcheck disable=2181
 	if [ $? -ne 0 ]
 		then
 		error "cannot get to status page on URL '${tomcat_url}'. Please make sure tomcat url, username and password are correct."
@@ -116,7 +120,6 @@ EOF
 
 # _update is called continuously, to collect the values
 tomcat_update() {
-	local reqs net
 	# the first argument to this function is the microseconds since last update
 	# pass this parameter to the BEGIN statement (see bellow).
 
diff --git a/conf.d/charts.d/tomcat.conf b/collectors/charts.d.plugin/tomcat/tomcat.conf
index e9f3eefa9..e9f3eefa9 100644
--- a/conf.d/charts.d/tomcat.conf
+++ b/collectors/charts.d.plugin/tomcat/tomcat.conf
diff --git a/collectors/checks.plugin/Makefile.am b/collectors/checks.plugin/Makefile.am
new file mode 100644
index 000000000..babdcf0df
--- /dev/null
+++ b/collectors/checks.plugin/Makefile.am
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
diff --git a/collectors/checks.plugin/Makefile.in b/collectors/checks.plugin/Makefile.in
new file mode 100644
index 000000000..632125466
--- /dev/null
+++ b/collectors/checks.plugin/Makefile.in
@@ -0,0 +1,457 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+VPATH = @srcdir@
+am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
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+OPTIONAL_LIBCAP_CFLAGS = @OPTIONAL_LIBCAP_CFLAGS@
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+OPTIONAL_MATH_LIBS = @OPTIONAL_MATH_LIBS@
+OPTIONAL_NFACCT_CLFAGS = @OPTIONAL_NFACCT_CLFAGS@
+OPTIONAL_NFACCT_LIBS = @OPTIONAL_NFACCT_LIBS@
+OPTIONAL_UUID_CLFAGS = @OPTIONAL_UUID_CLFAGS@
+OPTIONAL_UUID_LIBS = @OPTIONAL_UUID_LIBS@
+OPTIONAL_ZLIB_CLFAGS = @OPTIONAL_ZLIB_CLFAGS@
+OPTIONAL_ZLIB_LIBS = @OPTIONAL_ZLIB_LIBS@
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+PACKAGE_RPM_VERSION = @PACKAGE_RPM_VERSION@
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+PACKAGE_TARNAME = @PACKAGE_TARNAME@
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+PTHREAD_CC = @PTHREAD_CC@
+PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
+PTHREAD_LIBS = @PTHREAD_LIBS@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SSE_CANDIDATE = @SSE_CANDIDATE@
+STRIP = @STRIP@
+UUID_CFLAGS = @UUID_CFLAGS@
+UUID_LIBS = @UUID_LIBS@
+VERSION = @VERSION@
+ZLIB_CFLAGS = @ZLIB_CFLAGS@
+ZLIB_LIBS = @ZLIB_LIBS@
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+all: all-am
+
+.SUFFIXES:
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+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
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+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/checks.plugin/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu collectors/checks.plugin/Makefile
+.PRECIOUS: Makefile
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+	@case '$?' in \
+	  *config.status*) \
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+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
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+	esac;
+
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
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+
+ctags CTAGS:
+
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+
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+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
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+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
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+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
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+	fi
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+	@echo "This command is intended for maintainers to use"
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+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
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diff --git a/src/plugin_checks.c b/collectors/checks.plugin/plugin_checks.c
index b99b97d40..f8a2008a8 100644
--- a/src/plugin_checks.c
+++ b/collectors/checks.plugin/plugin_checks.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_checks.h"
 
 #ifdef NETDATA_INTERNAL_CHECKS
 
@@ -27,9 +29,9 @@ void *checks_main(void *ptr) {
             , NULL
             , "Caller gives microseconds"
             , "a million !"
-            , "netdata"
-            , "checks"
-            , 99999
+            , "checks.plugin"
+            , ""
+            , NETDATA_CHART_PRIO_CHECKS
             , localhost->rrd_update_every
             , RRDSET_TYPE_LINE
     );
@@ -45,9 +47,9 @@ void *checks_main(void *ptr) {
             , NULL
             , "Netdata calcs microseconds"
             , "a million !"
-            , "netdata"
-            , "checks"
-            , 99999
+            , "checks.plugin"
+            , ""
+            , NETDATA_CHART_PRIO_CHECKS
             , localhost->rrd_update_every
             , RRDSET_TYPE_LINE
     );
@@ -62,9 +64,9 @@ void *checks_main(void *ptr) {
             , NULL
             , "Clock difference"
             , "microseconds diff"
-            , "netdata"
-            , "checks"
-            , 99999
+            , "checks.plugin"
+            , ""
+            , NETDATA_CHART_PRIO_CHECKS
             , localhost->rrd_update_every
             , RRDSET_TYPE_LINE
     );
diff --git a/collectors/checks.plugin/plugin_checks.h b/collectors/checks.plugin/plugin_checks.h
new file mode 100644
index 000000000..93494765d
--- /dev/null
+++ b/collectors/checks.plugin/plugin_checks.h
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_PLUGIN_CHECKS_H
+#define NETDATA_PLUGIN_CHECKS_H 1
+
+#include "../../daemon/common.h"
+
+#ifdef NETDATA_INTERNAL_CHECKS
+
+#define NETDATA_PLUGIN_HOOK_CHECKS \
+    { \
+        .name = "PLUGIN[check]", \
+        .config_section = CONFIG_SECTION_PLUGINS, \
+        .config_name = "checks", \
+        .enabled = 0, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = checks_main \
+    },
+
+extern void *checks_main(void *ptr);
+
+#else // !NETDATA_INTERNAL_CHECKS
+
+#define NETDATA_PLUGIN_HOOK_CHECKS
+
+#endif // NETDATA_INTERNAL_CHECKS
+
+#endif // NETDATA_PLUGIN_CHECKS_H
diff --git a/collectors/diskspace.plugin/Makefile.am b/collectors/diskspace.plugin/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/collectors/diskspace.plugin/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/collectors/diskspace.plugin/Makefile.in b/collectors/diskspace.plugin/Makefile.in
new file mode 100644
index 000000000..ceebc5455
--- /dev/null
+++ b/collectors/diskspace.plugin/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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+OPTIONAL_UUID_CLFAGS = @OPTIONAL_UUID_CLFAGS@
+OPTIONAL_UUID_LIBS = @OPTIONAL_UUID_LIBS@
+OPTIONAL_ZLIB_CLFAGS = @OPTIONAL_ZLIB_CLFAGS@
+OPTIONAL_ZLIB_LIBS = @OPTIONAL_ZLIB_LIBS@
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+PATH_SEPARATOR = @PATH_SEPARATOR@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PTHREAD_CC = @PTHREAD_CC@
+PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
+PTHREAD_LIBS = @PTHREAD_LIBS@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SSE_CANDIDATE = @SSE_CANDIDATE@
+STRIP = @STRIP@
+UUID_CFLAGS = @UUID_CFLAGS@
+UUID_LIBS = @UUID_LIBS@
+VERSION = @VERSION@
+ZLIB_CFLAGS = @ZLIB_CFLAGS@
+ZLIB_LIBS = @ZLIB_LIBS@
+abs_builddir = @abs_builddir@
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+chartsdir = @chartsdir@
+configdir = @configdir@
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+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+has_jemalloc = @has_jemalloc@
+has_tcmalloc = @has_tcmalloc@
+host = @host@
+host_alias = @host_alias@
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+oldincludedir = @oldincludedir@
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+webdir = @webdir@
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/diskspace.plugin/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu collectors/diskspace.plugin/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
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+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
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+
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+
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+
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+
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+
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+
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+
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+
+install-ps: install-ps-am
+
+install-ps-am:
+
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+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/diskspace.plugin/README.md b/collectors/diskspace.plugin/README.md
new file mode 100644
index 000000000..74d6cde3c
--- /dev/null
+++ b/collectors/diskspace.plugin/README.md
@@ -0,0 +1,5 @@
+> for disks performance monitoring, see the `proc` plugin, [here](../proc.plugin/#monitoring-disks-performance-with-netdata)
+
+# diskspace.plugin
+
+This plugin monitors the disk space usage of mounted disks, under Linux.
diff --git a/src/plugin_proc_diskspace.c b/collectors/diskspace.plugin/plugin_diskspace.c
index 0a229f38e..dca7c9076 100644
--- a/src/plugin_proc_diskspace.c
+++ b/collectors/diskspace.plugin/plugin_diskspace.c
@@ -1,7 +1,11 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_diskspace.h"
+
+#define PLUGIN_DISKSPACE_NAME "diskspace.plugin"
 
 #define DELAULT_EXCLUDED_PATHS "/proc/* /sys/* /var/run/user/* /run/user/* /snap/* /var/lib/docker/*"
-#define DEFAULT_EXCLUDED_FILESYSTEMS ""
+#define DEFAULT_EXCLUDED_FILESYSTEMS "*gvfs *gluster* *s3fs *ipfs *davfs2 *httpfs *sshfs *gdfs *moosefs fusectl"
 #define CONFIG_SECTION_DISKSPACE "plugin:proc:diskspace"
 
 static struct mountinfo *disk_mountinfo_root = NULL;
@@ -129,7 +133,8 @@ static inline void do_disk_space_stats(struct mountinfo *mi, int update_every) {
         }
 
         // check if the mount point is a directory #2407
-        {
+        // but only when it is enabled by default #4491
+        if(def_space != CONFIG_BOOLEAN_NO || def_inodes != CONFIG_BOOLEAN_NO) {
             struct stat bs;
             if(stat(mi->mount_point, &bs) == -1) {
                 error("DISKSPACE: Cannot stat() mount point '%s' (disk '%s', filesystem '%s', root '%s')."
@@ -259,9 +264,9 @@ static inline void do_disk_space_stats(struct mountinfo *mi, int update_every) {
                         , "disk.space"
                         , title
                         , "GB"
-                        , "diskspace"
+                        , PLUGIN_DISKSPACE_NAME
                         , NULL
-                        , 2023
+                        , NETDATA_CHART_PRIO_DISKSPACE_SPACE
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -299,9 +304,9 @@ static inline void do_disk_space_stats(struct mountinfo *mi, int update_every) {
                         , "disk.inodes"
                         , title
                         , "Inodes"
-                        , "diskspace"
+                        , PLUGIN_DISKSPACE_NAME
                         , NULL
-                        , 2024
+                        , NETDATA_CHART_PRIO_DISKSPACE_INODES
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -337,7 +342,7 @@ static void diskspace_main_cleanup(void *ptr) {
     static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
 }
 
-void *proc_diskspace_main(void *ptr) {
+void *diskspace_main(void *ptr) {
     netdata_thread_cleanup_push(diskspace_main_cleanup, ptr);
 
     int vdo_cpu_netdata = config_get_boolean("plugin:proc", "netdata server resources", 1);
@@ -359,7 +364,7 @@ void *proc_diskspace_main(void *ptr) {
     heartbeat_t hb;
     heartbeat_init(&hb);
     while(!netdata_exit) {
-        duration = heartbeat_dt_usec(&hb);
+        duration = heartbeat_monotonic_dt_to_now_usec(&hb);
         /* usec_t hb_dt = */ heartbeat_next(&hb, step);
 
         if(unlikely(netdata_exit)) break;
@@ -406,9 +411,9 @@ void *proc_diskspace_main(void *ptr) {
                         , NULL
                         , "NetData Disk Space Plugin CPU usage"
                         , "milliseconds/s"
-                        , "diskspace"
+                        , PLUGIN_DISKSPACE_NAME
                         , NULL
-                        , 132020
+                        , NETDATA_CHART_PRIO_NETDATA_DISKSPACE
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -434,7 +439,7 @@ void *proc_diskspace_main(void *ptr) {
                         , NULL
                         , "NetData Disk Space Plugin Duration"
                         , "milliseconds/run"
-                        , "diskspace"
+                        , PLUGIN_DISKSPACE_NAME
                         , NULL
                         , 132021
                         , update_every
diff --git a/collectors/diskspace.plugin/plugin_diskspace.h b/collectors/diskspace.plugin/plugin_diskspace.h
new file mode 100644
index 000000000..7c9df9d13
--- /dev/null
+++ b/collectors/diskspace.plugin/plugin_diskspace.h
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_PLUGIN_PROC_DISKSPACE_H
+#define NETDATA_PLUGIN_PROC_DISKSPACE_H
+
+#include "../../daemon/common.h"
+
+
+#if (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_DISKSPACE \
+    { \
+        .name = "PLUGIN[diskspace]", \
+        .config_section = CONFIG_SECTION_PLUGINS, \
+        .config_name = "diskspace", \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = diskspace_main \
+    },
+
+extern void *diskspace_main(void *ptr);
+
+#include "../proc.plugin/plugin_proc.h"
+
+#else // (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_DISKSPACE
+
+#endif // (TARGET_OS == OS_LINUX)
+
+
+
+#endif //NETDATA_PLUGIN_PROC_DISKSPACE_H
diff --git a/collectors/fping.plugin/Makefile.am b/collectors/fping.plugin/Makefile.am
new file mode 100644
index 000000000..4395394db
--- /dev/null
+++ b/collectors/fping.plugin/Makefile.am
@@ -0,0 +1,24 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+CLEANFILES = \
+	fping.plugin \
+	$(NULL)
+
+include $(top_srcdir)/build/subst.inc
+SUFFIXES = .in
+
+dist_plugins_SCRIPTS = \
+	fping.plugin \
+	$(NULL)
+
+dist_noinst_DATA = \
+	fping.plugin.in \
+	README.md \
+	$(NULL)
+
+dist_libconfig_DATA = \
+    fping.conf \
+    $(NULL)
diff --git a/plugins.d/Makefile.in b/collectors/fping.plugin/Makefile.in
index 059d68f6a..67b9699b7 100644
--- a/plugins.d/Makefile.in
+++ b/collectors/fping.plugin/Makefile.in
@@ -14,6 +14,8 @@
 
 @SET_MAKE@
 
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 
 VPATH = @srcdir@
 am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
@@ -79,18 +81,21 @@ PRE_UNINSTALL = :
 POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
-subdir = plugins.d
-DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
-	$(dist_plugins_SCRIPTS) $(dist_plugins_DATA)
+DIST_COMMON = $(top_srcdir)/build/subst.inc $(srcdir)/Makefile.in \
+	$(srcdir)/Makefile.am $(dist_plugins_SCRIPTS) \
+	$(dist_libconfig_DATA) $(dist_noinst_DATA)
+subdir = collectors/fping.plugin
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -124,7 +129,8 @@ am__uninstall_files_from_dir = { \
     || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
          $(am__cd) "$$dir" && rm -f $$files; }; \
   }
-am__installdirs = "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(pluginsdir)"
+am__installdirs = "$(DESTDIR)$(pluginsdir)" \
+	"$(DESTDIR)$(libconfigdir)"
 SCRIPTS = $(dist_plugins_SCRIPTS)
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
@@ -145,7 +151,7 @@ am__can_run_installinfo = \
     n|no|NO) false;; \
     *) (install-info --version) >/dev/null 2>&1;; \
   esac
-DATA = $(dist_plugins_DATA)
+DATA = $(dist_libconfig_DATA) $(dist_noinst_DATA)
 am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
@@ -245,6 +251,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -266,6 +273,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
@@ -292,34 +300,31 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 varlibdir = @varlibdir@
 webdir = @webdir@
-
-#
-# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
-#
+AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
-dist_plugins_DATA = \
-	README.md \
+CLEANFILES = \
+	fping.plugin \
 	$(NULL)
 
+SUFFIXES = .in
 dist_plugins_SCRIPTS = \
-	alarm-email.sh \
-	alarm-notify.sh \
-	alarm-test.sh \
-	cgroup-name.sh \
-	cgroup-network-helper.sh \
-	charts.d.dryrun-helper.sh \
-	charts.d.plugin \
 	fping.plugin \
-	node.d.plugin \
-	python.d.plugin \
-	tc-qos-helper.sh \
-	loopsleepms.sh.inc \
 	$(NULL)
 
+dist_noinst_DATA = \
+	fping.plugin.in \
+	README.md \
+	$(NULL)
+
+dist_libconfig_DATA = \
+    fping.conf \
+    $(NULL)
+
 all: all-am
 
 .SUFFIXES:
-$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+.SUFFIXES: .in
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/build/subst.inc $(am__configure_deps)
 	@for dep in $?; do \
 	  case '$(am__configure_deps)' in \
 	    *$$dep*) \
@@ -328,9 +333,9 @@ $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__confi
 	      exit 1;; \
 	  esac; \
 	done; \
-	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu plugins.d/Makefile'; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/fping.plugin/Makefile'; \
 	$(am__cd) $(top_srcdir) && \
-	  $(AUTOMAKE) --gnu plugins.d/Makefile
+	  $(AUTOMAKE) --gnu collectors/fping.plugin/Makefile
 .PRECIOUS: Makefile
 Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	@case '$?' in \
@@ -340,6 +345,7 @@ Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
 	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
 	esac;
+$(top_srcdir)/build/subst.inc:
 
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
@@ -384,27 +390,27 @@ uninstall-dist_pluginsSCRIPTS:
 	files=`for p in $$list; do echo "$$p"; done | \
 	       sed -e 's,.*/,,;$(transform)'`; \
 	dir='$(DESTDIR)$(pluginsdir)'; $(am__uninstall_files_from_dir)
-install-dist_pluginsDATA: $(dist_plugins_DATA)
+install-dist_libconfigDATA: $(dist_libconfig_DATA)
 	@$(NORMAL_INSTALL)
-	@list='$(dist_plugins_DATA)'; test -n "$(pluginsdir)" || list=; \
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
 	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(pluginsdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(pluginsdir)" || exit 1; \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libconfigdir)" || exit 1; \
 	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
 	done | $(am__base_list) | \
 	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(pluginsdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(pluginsdir)" || exit $$?; \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(libconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(libconfigdir)" || exit $$?; \
 	done
 
-uninstall-dist_pluginsDATA:
+uninstall-dist_libconfigDATA:
 	@$(NORMAL_UNINSTALL)
-	@list='$(dist_plugins_DATA)'; test -n "$(pluginsdir)" || list=; \
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(pluginsdir)'; $(am__uninstall_files_from_dir)
+	dir='$(DESTDIR)$(libconfigdir)'; $(am__uninstall_files_from_dir)
 tags TAGS:
 
 ctags CTAGS:
@@ -446,7 +452,7 @@ check-am: all-am
 check: check-am
 all-am: Makefile $(SCRIPTS) $(DATA)
 installdirs:
-	for dir in "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(pluginsdir)"; do \
+	for dir in "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(libconfigdir)"; do \
 	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
 	done
 install: install-am
@@ -471,6 +477,7 @@ install-strip:
 mostlyclean-generic:
 
 clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
 
 distclean-generic:
 	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
@@ -500,7 +507,8 @@ info: info-am
 
 info-am:
 
-install-data-am: install-dist_pluginsDATA install-dist_pluginsSCRIPTS
+install-data-am: install-dist_libconfigDATA \
+	install-dist_pluginsSCRIPTS
 
 install-dvi: install-dvi-am
 
@@ -544,14 +552,15 @@ ps: ps-am
 
 ps-am:
 
-uninstall-am: uninstall-dist_pluginsDATA uninstall-dist_pluginsSCRIPTS
+uninstall-am: uninstall-dist_libconfigDATA \
+	uninstall-dist_pluginsSCRIPTS
 
 .MAKE: install-am install-strip
 
 .PHONY: all all-am check check-am clean clean-generic cscopelist-am \
 	ctags-am distclean distclean-generic distdir dvi dvi-am html \
 	html-am info info-am install install-am install-data \
-	install-data-am install-dist_pluginsDATA \
+	install-data-am install-dist_libconfigDATA \
 	install-dist_pluginsSCRIPTS install-dvi install-dvi-am \
 	install-exec install-exec-am install-html install-html-am \
 	install-info install-info-am install-man install-pdf \
@@ -559,8 +568,23 @@ uninstall-am: uninstall-dist_pluginsDATA uninstall-dist_pluginsSCRIPTS
 	installcheck installcheck-am installdirs maintainer-clean \
 	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
 	pdf-am ps ps-am tags-am uninstall uninstall-am \
-	uninstall-dist_pluginsDATA uninstall-dist_pluginsSCRIPTS
-
+	uninstall-dist_libconfigDATA uninstall-dist_pluginsSCRIPTS
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
+		-e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
+		-e 's#[@]pythondir_POST@#$(pythondir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
+		$< > $@.tmp; then \
+		mv "$@.tmp" "$@"; \
+	else \
+		rm -f "$@.tmp"; \
+		false; \
+	fi
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
diff --git a/collectors/fping.plugin/README.md b/collectors/fping.plugin/README.md
new file mode 100644
index 000000000..0554a7edc
--- /dev/null
+++ b/collectors/fping.plugin/README.md
@@ -0,0 +1,96 @@
+# fping.plugin
+
+The fping plugin supports monitoring latency, packet loss and uptime of any number of network end points,
+by pinging them with `fping`.
+
+A recent version of `fping` is required (one that supports option ` -N `).
+The supplied plugin can install it, by running:
+
+```sh
+/usr/libexec/netdata/plugins.d/fping.plugin install
+```
+
+The above will download, build and install the right version as `/usr/local/bin/fping`.
+
+Then you need to edit `/etc/netdata/fping.conf` (to edit it on your system run
+`/etc/netdata/edit-config fping.conf`) like this:
+
+```sh
+# uncomment the following line - it should already be there
+fping="/usr/local/bin/fping"
+
+# set here all the hosts you need to ping
+# I suggest to use hostnames and put their IPs in /etc/hosts
+hosts="host1 host2 host3"
+
+# override the chart update frequency - the default is inherited from netdata
+update_every=1
+
+# time in milliseconds (1 sec = 1000 ms) to ping the hosts
+# 200 = 5 pings per second
+ping_every=200
+
+# other fping options - these are the defaults
+fping_opts="-R -b 56 -i 1 -r 0 -t 5000"
+```
+
+## alarms
+
+netdata will automatically attach a few alarms for each host.
+Check the [latest versions of the fping alarms](https://github.com/netdata/netdata/blob/master/health/health.d/fping.conf)
+
+## Additional Tips 
+
+### Customizing Amount of Pings Per Second
+
+For example, to update the chart every 10 seconds and use 2 pings every 10 seconds, use this:
+
+```sh
+# Chart Update Frequency (Time in Seconds)
+update_every=10
+
+# Time in Milliseconds (1 sec = 1000 ms) to Ping the Hosts
+# The Following Example Sends 1 Ping Every 5000 ms
+# Calculation Formula: ping_every = (update_every * 1000 ) / 2
+ping_every=5000
+```
+
+### Multiple fping Plugins With Different Settings
+
+You may need to run multiple fping plugins with different settings for different end points.
+For example, you may need to ping a few hosts 10 times per second, and others once per second.
+
+netdata allows you to add as many `fping` plugins as you like.
+
+Follow this procedure:
+
+**1. Create New fping Configuration File**
+
+
+```sh
+# Step Into Configuration Directory
+cd /etc/netdata
+
+# Copy Original fping Configuration File To New Configuration File
+cp fping.conf fping2.conf
+```
+
+Edit `fping2.conf` and set the settings and the hosts you need for the seconds instance.
+
+**2. Soft Link Original fping Plugin to New Plugin File**
+
+```sh
+# Become root (If The Step Step Is Performed As Non-Root User)
+sudo su
+
+# Step Into The Plugins Directory
+cd /usr/libexec/netdata/plugins.d
+
+# Link fping.plugin to fping2.plugin
+ln -s fping.plugin fping2.plugin
+```
+
+That's it. netdata will detect the new plugin and start it.
+
+You can name the new plugin any name you like.
+Just make sure the plugin and the configuration file have the same name.
diff --git a/conf.d/fping.conf b/collectors/fping.plugin/fping.conf
index 63a7f7acd..63a7f7acd 100644
--- a/conf.d/fping.conf
+++ b/collectors/fping.plugin/fping.conf
diff --git a/plugins.d/fping.plugin b/collectors/fping.plugin/fping.plugin
index f38a8dde0..cf8f17e9a 100755..100644
--- a/plugins.d/fping.plugin
+++ b/collectors/fping.plugin/fping.plugin
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # netdata
 # real-time performance and health monitoring, done right!
@@ -129,7 +130,8 @@ update_every="${1-1}"
 
 # the netdata configuration directory
 # passed by netdata as an environment variable
-[ -z "${NETDATA_CONFIG_DIR}" ] && NETDATA_CONFIG_DIR="$(dirname "${0}")/../../../../etc/netdata"
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="/usr/local/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/local/lib/netdata/conf.d"
 
 # -----------------------------------------------------------------------------
 # configuration options
@@ -152,23 +154,33 @@ ping_every="$((update_every * 1000 / 5))"
 fping_opts="-R -b 56 -i 1 -r 0 -t 5000"
 
 # -----------------------------------------------------------------------------
-# load the configuration file
+# load the configuration files
 
-if [ ! -f "${NETDATA_CONFIG_DIR}/${plugin}.conf" ]
+for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/${plugin}.conf" "${NETDATA_USER_CONFIG_DIR}/${plugin}.conf"
+do
+    if [ -f "${CONFIG}" ]
+        then
+        info "Loading config file '${CONFIG}'..."
+        source "${CONFIG}"
+        [ $? -ne 0 ] && error "Failed to load config file '${CONFIG}'."
+    else
+        warning "Cannot find file '${CONFIG}'."
+    fi
+done
+
+if [ -z "${hosts}" ]
 then
-	fatal "configuration file '${NETDATA_CONFIG_DIR}/${plugin}.conf' not found - nothing to do."
+	fatal "no hosts configured - nothing to do."
 fi
 
-source "${NETDATA_CONFIG_DIR}/${plugin}.conf"
-
-if [ -z "${hosts}" ]
+if [ -z "${fping}" ]
 then
-	fatal "no hosts configured in '${NETDATA_CONFIG_DIR}/${plugin}.conf' - nothing to do."
+	fatal "fping command is not found. Please set its full path in '${NETDATA_USER_CONFIG_DIR}/${plugin}.conf'"
 fi
 
-if [ -z "${fping}" -o ! -x "${fping}" ]
+if [ ! -x "${fping}" ]
 then
-	fatal "command '${fping}' is not found or is not executable - cannot proceed."
+	fatal "fping command '${fping}' is not executable - cannot proceed."
 fi
 
 if [ ${ping_every} -lt 20 ]
@@ -185,4 +197,4 @@ info "starting fping: ${fping} ${options[*]}"
 exec "${fping}" "${options[@]}"
 
 # if we cannot execute fping, stop
-fatal "command '${fping} ${options[@]}' failed to be executed."
+fatal "command '${fping} ${options[*]}' failed to be executed (returned code $?)."
diff --git a/collectors/fping.plugin/fping.plugin.in b/collectors/fping.plugin/fping.plugin.in
new file mode 100755
index 000000000..2c03e418e
--- /dev/null
+++ b/collectors/fping.plugin/fping.plugin.in
@@ -0,0 +1,200 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# GPL v3+
+#
+# This plugin requires a latest version of fping.
+# You can compile it from source, by running me with option: install
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+if [ "${1}" = "install" ]
+    then
+    [ "${UID}" != 0 ] && echo >&2 "Please run me as root. This will install a single binary file: /usr/local/bin/fping." && exit 1
+
+    run() {
+        printf >&2 " > "
+        printf >&2 "%q " "${@}"
+        printf >&2 "\n"
+        "${@}" || exit 1
+    }
+
+    download() {
+        local curl="$(which curl 2>/dev/null || command -v curl 2>/dev/null)"
+        [ ! -z "${curl}" ] && run curl -s -L "${1}" && return 0
+
+        local wget="$(which wget 2>/dev/null || command -v wget 2>/dev/null)"
+        [ ! -z "${wget}" ] && run wget -q -O - "${1}" && return 0
+
+        echo >&2 "Cannot find 'curl' or 'wget' in this system." && exit 1
+    }
+
+    [ ! -d /usr/src ] && run mkdir -p /usr/src
+    [ ! -d /usr/local/bin ] && run mkdir -p /usr/local/bin
+
+    run cd /usr/src
+
+    if [ -d fping-4.0 ]
+        then
+        run rm -rf fping-4.0 || exit 1
+    fi
+
+    download 'https://github.com/schweikert/fping/releases/download/v4.0/fping-4.0.tar.gz' | run tar -zxvpf -
+    [ $? -ne 0 ] && exit 1
+    run cd fping-4.0 || exit 1
+
+    run ./configure --prefix=/usr/local
+    run make clean
+    run make
+    if [ -f /usr/local/bin/fping ]
+        then
+        run mv -f /usr/local/bin/fping /usr/local/bin/fping.old
+    fi
+    run mv src/fping /usr/local/bin/fping
+    run chown root:root /usr/local/bin/fping
+    run chmod 4755 /usr/local/bin/fping
+    echo >&2
+    echo >&2 "All done, you have a compatible fping now at /usr/local/bin/fping."
+    echo >&2
+
+    fping="$(which fping  2>/dev/null || command -v fping 2>/dev/null)"
+    if [ "${fping}" != "/usr/local/bin/fping" ]
+        then
+        echo >&2 "You have another fping installed at: ${fping}."
+        echo >&2 "Please set:"
+        echo >&2
+        echo >&2 "  fping=\"/usr/local/bin/fping\""
+        echo >&2
+        echo >&2 "at /etc/netdata/fping.conf"
+        echo >&2
+    fi
+    exit 0
+fi
+
+# -----------------------------------------------------------------------------
+
+PROGRAM_NAME="$(basename "${0}")"
+
+logdate() {
+    date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+    local status="${1}"
+    shift
+
+    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+    log WARNING "${@}"
+}
+
+error() {
+    log ERROR "${@}"
+}
+
+info() {
+    log INFO "${@}"
+}
+
+fatal() {
+    log FATAL "${@}"
+	echo "DISABLE"
+    exit 1
+}
+
+debug=0
+debug() {
+    [ $debug -eq 1 ] && log DEBUG "${@}"
+}
+
+# -----------------------------------------------------------------------------
+
+# store in ${plugin} the name we run under
+# this allows us to copy/link fping.plugin under a different name
+# to have multiple fping plugins running with different settings
+plugin="${PROGRAM_NAME/.plugin/}"
+
+
+# -----------------------------------------------------------------------------
+
+# the frequency to send info to netdata
+# passed by netdata as the first parameter
+update_every="${1-1}"
+
+# the netdata configuration directory
+# passed by netdata as an environment variable
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="@configdir_POST@"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="@libconfigdir_POST@"
+
+# -----------------------------------------------------------------------------
+# configuration options
+# can be overwritten at /etc/netdata/fping.conf
+
+# the fping binary to use
+# we need one that can output netdata friendly info (supporting: -N)
+# if you have multiple versions, put here the full filename of the right one
+fping="$( which fping 2>/dev/null || command -v fping 2>/dev/null )"
+
+# a space separated list of hosts to fping
+# we suggest to put names here and the IPs of these names in /etc/hosts
+hosts=""
+
+# the time in milliseconds (1 sec = 1000 ms)
+# to ping the hosts - by default 5 pings per host per iteration
+ping_every="$((update_every * 1000 / 5))"
+
+# fping options
+fping_opts="-R -b 56 -i 1 -r 0 -t 5000"
+
+# -----------------------------------------------------------------------------
+# load the configuration files
+
+for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/${plugin}.conf" "${NETDATA_USER_CONFIG_DIR}/${plugin}.conf"
+do
+    if [ -f "${CONFIG}" ]
+        then
+        info "Loading config file '${CONFIG}'..."
+        source "${CONFIG}"
+        [ $? -ne 0 ] && error "Failed to load config file '${CONFIG}'."
+    else
+        warning "Cannot find file '${CONFIG}'."
+    fi
+done
+
+if [ -z "${hosts}" ]
+then
+	fatal "no hosts configured - nothing to do."
+fi
+
+if [ -z "${fping}" ]
+then
+	fatal "fping command is not found. Please set its full path in '${NETDATA_USER_CONFIG_DIR}/${plugin}.conf'"
+fi
+
+if [ ! -x "${fping}" ]
+then
+	fatal "fping command '${fping}' is not executable - cannot proceed."
+fi
+
+if [ ${ping_every} -lt 20 ]
+    then
+    warning "ping every was set to ${ping_every} but 20 is the minimum for non-root users. Setting it to 20 ms."
+    ping_every=20
+fi
+
+# the fping options we will use
+options=( -N -l -Q ${update_every} -p ${ping_every} ${fping_opts} ${hosts} )
+
+# execute fping
+info "starting fping: ${fping} ${options[*]}"
+exec "${fping}" "${options[@]}"
+
+# if we cannot execute fping, stop
+fatal "command '${fping} ${options[*]}' failed to be executed (returned code $?)."
diff --git a/collectors/freebsd.plugin/Makefile.am b/collectors/freebsd.plugin/Makefile.am
new file mode 100644
index 000000000..e80ec702d
--- /dev/null
+++ b/collectors/freebsd.plugin/Makefile.am
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
diff --git a/collectors/freebsd.plugin/Makefile.in b/collectors/freebsd.plugin/Makefile.in
new file mode 100644
index 000000000..c88b3d755
--- /dev/null
+++ b/collectors/freebsd.plugin/Makefile.in
@@ -0,0 +1,457 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
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+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
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+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
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+      -[JT]) skip_next=yes;; \
+    esac; \
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+      *$$target_option*) has_opt=yes; break;; \
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+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
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+MKDIR_P = @MKDIR_P@
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+NFACCT_LIBS = @NFACCT_LIBS@
+OBJEXT = @OBJEXT@
+OPTIONAL_IPMIMONITORING_CFLAGS = @OPTIONAL_IPMIMONITORING_CFLAGS@
+OPTIONAL_IPMIMONITORING_LIBS = @OPTIONAL_IPMIMONITORING_LIBS@
+OPTIONAL_LIBCAP_CFLAGS = @OPTIONAL_LIBCAP_CFLAGS@
+OPTIONAL_LIBCAP_LIBS = @OPTIONAL_LIBCAP_LIBS@
+OPTIONAL_MATH_CLFAGS = @OPTIONAL_MATH_CLFAGS@
+OPTIONAL_MATH_LIBS = @OPTIONAL_MATH_LIBS@
+OPTIONAL_NFACCT_CLFAGS = @OPTIONAL_NFACCT_CLFAGS@
+OPTIONAL_NFACCT_LIBS = @OPTIONAL_NFACCT_LIBS@
+OPTIONAL_UUID_CLFAGS = @OPTIONAL_UUID_CLFAGS@
+OPTIONAL_UUID_LIBS = @OPTIONAL_UUID_LIBS@
+OPTIONAL_ZLIB_CLFAGS = @OPTIONAL_ZLIB_CLFAGS@
+OPTIONAL_ZLIB_LIBS = @OPTIONAL_ZLIB_LIBS@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_RPM_RELEASE = @PACKAGE_RPM_RELEASE@
+PACKAGE_RPM_VERSION = @PACKAGE_RPM_VERSION@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PTHREAD_CC = @PTHREAD_CC@
+PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
+PTHREAD_LIBS = @PTHREAD_LIBS@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SSE_CANDIDATE = @SSE_CANDIDATE@
+STRIP = @STRIP@
+UUID_CFLAGS = @UUID_CFLAGS@
+UUID_LIBS = @UUID_LIBS@
+VERSION = @VERSION@
+ZLIB_CFLAGS = @ZLIB_CFLAGS@
+ZLIB_LIBS = @ZLIB_LIBS@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
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+bindir = @bindir@
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+build_cpu = @build_cpu@
+build_os = @build_os@
+build_target = @build_target@
+build_vendor = @build_vendor@
+builddir = @builddir@
+cachedir = @cachedir@
+chartsdir = @chartsdir@
+configdir = @configdir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+has_jemalloc = @has_jemalloc@
+has_tcmalloc = @has_tcmalloc@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libconfigdir = @libconfigdir@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+logdir = @logdir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+nodedir = @nodedir@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+pluginsdir = @pluginsdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+pythondir = @pythondir@
+registrydir = @registrydir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+varlibdir = @varlibdir@
+webdir = @webdir@
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/freebsd.plugin/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu collectors/freebsd.plugin/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
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+install-html-am:
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+install-info-am:
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+install-man:
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+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/freebsd_devstat.c b/collectors/freebsd.plugin/freebsd_devstat.c
index ed7466ead..10279aabc 100644
--- a/src/freebsd_devstat.c
+++ b/collectors/freebsd.plugin/freebsd_devstat.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_freebsd.h"
 
 #include <sys/devicestat.h>
 
@@ -359,9 +361,9 @@ int do_kern_devstat(int update_every, usec_t dt) {
                                                                     "disk.io",
                                                                     "Disk I/O Bandwidth",
                                                                     "kilobytes/s",
-                                                                    "freebsd",
+                                        "freebsd.plugin",
                                                                     "devstat",
-                                                                    2000,
+                                        NETDATA_CHART_PRIO_DISK_IO,
                                                                     update_every,
                                                                     RRDSET_TYPE_AREA
                                 );
@@ -396,9 +398,9 @@ int do_kern_devstat(int update_every, usec_t dt) {
                                                                      "disk.ops",
                                                                      "Disk Completed I/O Operations",
                                                                      "operations/s",
-                                                                    "freebsd",
+                                        "freebsd.plugin",
                                                                     "devstat",
-                                                                     2001,
+                                        NETDATA_CHART_PRIO_DISK_OPS,
                                                                      update_every,
                                                                      RRDSET_TYPE_LINE
                                 );
@@ -435,9 +437,9 @@ int do_kern_devstat(int update_every, usec_t dt) {
                                                                       "disk.qops",
                                                                       "Disk Current I/O Operations",
                                                                       "operations",
-                                                                      "freebsd",
+                                        "freebsd.plugin",
                                                                       "devstat",
-                                                                      2002,
+                                        NETDATA_CHART_PRIO_DISK_QOPS,
                                                                       update_every,
                                                                       RRDSET_TYPE_LINE
                                 );
@@ -464,9 +466,9 @@ int do_kern_devstat(int update_every, usec_t dt) {
                                                                       "disk.util",
                                                                       "Disk Utilization Time",
                                                                       "% of time working",
-                                                                      "freebsd",
+                                        "freebsd.plugin",
                                                                       "devstat",
-                                                                      2004,
+                                        NETDATA_CHART_PRIO_DISK_UTIL,
                                                                       update_every,
                                                                       RRDSET_TYPE_AREA
                                 );
@@ -497,9 +499,9 @@ int do_kern_devstat(int update_every, usec_t dt) {
                                                                         "disk.iotime",
                                                                         "Disk Total I/O Time",
                                                                         "milliseconds/s",
-                                                                        "freebsd",
+                                        "freebsd.plugin",
                                                                         "devstat",
-                                                                        2022,
+                                        NETDATA_CHART_PRIO_DISK_IOTIME,
                                                                         update_every,
                                                                         RRDSET_TYPE_LINE
                                 );
@@ -545,9 +547,9 @@ int do_kern_devstat(int update_every, usec_t dt) {
                                                                            "disk.await",
                                                                            "Average Completed I/O Operation Time",
                                                                            "ms per operation",
-                                                                           "freebsd",
+                                            "freebsd.plugin",
                                                                            "devstat",
-                                                                           2005,
+                                            NETDATA_CHART_PRIO_DISK_AWAIT,
                                                                            update_every,
                                                                            RRDSET_TYPE_LINE
                                     );
@@ -610,9 +612,9 @@ int do_kern_devstat(int update_every, usec_t dt) {
                                                                             "disk.avgsz",
                                                                             "Average Completed I/O Operation Bandwidth",
                                                                             "kilobytes per operation",
-                                                                            "freebsd",
+                                            "freebsd.plugin",
                                                                             "devstat",
-                                                                            2006,
+                                            NETDATA_CHART_PRIO_DISK_AVGSZ,
                                                                             update_every,
                                                                             RRDSET_TYPE_AREA
                                     );
@@ -667,9 +669,9 @@ int do_kern_devstat(int update_every, usec_t dt) {
                                                                            "disk.svctm",
                                                                            "Average Service Time",
                                                                            "ms per operation",
-                                                                           "freebsd",
+                                            "freebsd.plugin",
                                                                            "devstat",
-                                                                           2007,
+                                            NETDATA_CHART_PRIO_DISK_SVCTM,
                                                                            update_every,
                                                                            RRDSET_TYPE_LINE
                                     );
@@ -727,9 +729,9 @@ int do_kern_devstat(int update_every, usec_t dt) {
                                                      NULL,
                                                      "Disk I/O",
                                                      "kilobytes/s",
-                                                     "freebsd",
+                                "freebsd.plugin",
                                                      "devstat",
-                                                     150,
+                                NETDATA_CHART_PRIO_SYSTEM_IO,
                                                      update_every,
                                                      RRDSET_TYPE_AREA
                         );
diff --git a/src/freebsd_getifaddrs.c b/collectors/freebsd.plugin/freebsd_getifaddrs.c
index 73f8f1824..e15845857 100644
--- a/src/freebsd_getifaddrs.c
+++ b/collectors/freebsd.plugin/freebsd_getifaddrs.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_freebsd.h"
 
 #include <ifaddrs.h>
 
@@ -141,19 +143,24 @@ static struct cgroup_network_interface *get_network_interface(const char *name)
 int do_getifaddrs(int update_every, usec_t dt) {
     (void)dt;
 
-#define DELAULT_EXLUDED_INTERFACES "lo*"
+#define DEFAULT_EXLUDED_INTERFACES "lo*"
+#define DEFAULT_PHYSICAL_INTERFACES "igb* ix* cxl* em* ixl* ixlv* bge* ixgbe*"
 #define CONFIG_SECTION_GETIFADDRS "plugin:freebsd:getifaddrs"
 
     static int enable_new_interfaces = -1;
-    static int do_bandwidth_ipv4 = -1, do_bandwidth_ipv6 = -1, do_bandwidth = -1, do_packets = -1,
+    static int do_bandwidth_ipv4 = -1, do_bandwidth_ipv6 = -1, do_bandwidth = -1, do_packets = -1, do_bandwidth_net = -1, do_packets_net = -1,
             do_errors = -1, do_drops = -1, do_events = -1;
-    static SIMPLE_PATTERN *excluded_interfaces = NULL;
+    static SIMPLE_PATTERN *excluded_interfaces = NULL, *physical_interfaces = NULL;
 
     if (unlikely(enable_new_interfaces == -1)) {
         enable_new_interfaces = config_get_boolean_ondemand(CONFIG_SECTION_GETIFADDRS,
                                                               "enable new interfaces detected at runtime",
                                                               CONFIG_BOOLEAN_AUTO);
-
+        
+        do_bandwidth_net  = config_get_boolean_ondemand(CONFIG_SECTION_GETIFADDRS, "total bandwidth for physical interfaces",
+                                                       CONFIG_BOOLEAN_AUTO);
+        do_packets_net    = config_get_boolean_ondemand(CONFIG_SECTION_GETIFADDRS, "total packets for physical interfaces",
+                                                       CONFIG_BOOLEAN_AUTO);
         do_bandwidth_ipv4 = config_get_boolean_ondemand(CONFIG_SECTION_GETIFADDRS, "total bandwidth for ipv4 interfaces",
                                                         CONFIG_BOOLEAN_AUTO);
         do_bandwidth_ipv6 = config_get_boolean_ondemand(CONFIG_SECTION_GETIFADDRS, "total bandwidth for ipv6 interfaces",
@@ -170,18 +177,27 @@ int do_getifaddrs(int update_every, usec_t dt) {
                                                         CONFIG_BOOLEAN_AUTO);
 
         excluded_interfaces = simple_pattern_create(
-                config_get(CONFIG_SECTION_GETIFADDRS, "disable by default interfaces matching", DELAULT_EXLUDED_INTERFACES)
+                config_get(CONFIG_SECTION_GETIFADDRS, "disable by default interfaces matching", DEFAULT_EXLUDED_INTERFACES)
+                , NULL
+                , SIMPLE_PATTERN_EXACT
+        );
+        physical_interfaces = simple_pattern_create(
+                config_get(CONFIG_SECTION_GETIFADDRS, "set physical interfaces for system.net", DEFAULT_PHYSICAL_INTERFACES)
                 , NULL
                 , SIMPLE_PATTERN_EXACT
         );
     }
 
-    if (likely(do_bandwidth_ipv4 || do_bandwidth_ipv6 || do_bandwidth || do_packets || do_errors ||
+    if (likely(do_bandwidth_ipv4 || do_bandwidth_ipv6 || do_bandwidth || do_packets || do_errors || do_bandwidth_net || do_packets_net ||
                do_drops || do_events)) {
         struct ifaddrs *ifap;
 
         if (unlikely(getifaddrs(&ifap))) {
             error("FREEBSD: getifaddrs() failed");
+            do_bandwidth_net = 0;
+            error("DISABLED: system.net chart");
+            do_packets_net = 0;
+            error("DISABLED: system.packets chart");
             do_bandwidth_ipv4 = 0;
             error("DISABLED: system.ipv4 chart");
             do_bandwidth_ipv6 = 0;
@@ -204,7 +220,103 @@ int do_getifaddrs(int update_every, usec_t dt) {
             struct iftot {
                 u_long  ift_ibytes;
                 u_long  ift_obytes;
-            } iftot = {0, 0};
+                u_long  ift_ipackets;
+                u_long  ift_opackets;
+                u_long  ift_imcasts;
+                u_long  ift_omcasts;
+            } iftot = {0, 0, 0, 0, 0, 0};
+
+            // --------------------------------------------------------------------
+
+            if (likely(do_bandwidth_net)) {
+                
+                iftot.ift_ibytes = iftot.ift_obytes = 0;
+                for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
+                    if (ifa->ifa_addr->sa_family != AF_LINK)
+                        continue;
+                    if (!simple_pattern_matches(physical_interfaces, ifa->ifa_name))
+                        continue;
+                    iftot.ift_ibytes += IFA_DATA(ibytes);
+                    iftot.ift_obytes += IFA_DATA(obytes);
+                }
+                
+                static RRDSET *st = NULL;
+                static RRDDIM *rd_in = NULL, *rd_out = NULL;
+                
+                if (unlikely(!st)) {
+                    st = rrdset_create_localhost("system",
+                                                 "net",
+                                                 NULL,
+                                                 "network",
+                                                 NULL,
+                                                 "Network Traffic",
+                                                 "kilobits/s",
+                            "freebsd.plugin",
+                                                 "getifaddrs",
+                            NETDATA_CHART_PRIO_SYSTEM_NET,
+                                                 update_every,
+                                                 RRDSET_TYPE_AREA
+                                                 );
+                    
+                    rd_in  = rrddim_add(st, "InOctets",  "received", 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st, "OutOctets", "sent",    -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                } else
+                    rrdset_next(st);
+                
+                rrddim_set_by_pointer(st, rd_in,  iftot.ift_ibytes);
+                rrddim_set_by_pointer(st, rd_out, iftot.ift_obytes);
+                rrdset_done(st);
+            }
+            
+            // --------------------------------------------------------------------
+
+            if (likely(do_packets_net)) {
+
+                iftot.ift_ipackets = iftot.ift_opackets = iftot.ift_imcasts = iftot.ift_omcasts = 0;
+                for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
+                    if (ifa->ifa_addr->sa_family != AF_LINK)
+                        continue;
+                    if (!simple_pattern_matches(physical_interfaces, ifa->ifa_name))
+                        continue;
+                    iftot.ift_ipackets += IFA_DATA(ipackets);
+                    iftot.ift_opackets += IFA_DATA(opackets);
+                    iftot.ift_imcasts += IFA_DATA(imcasts);
+                    iftot.ift_omcasts += IFA_DATA(omcasts);
+                }
+
+                static RRDSET *st = NULL;
+                static RRDDIM *rd_packets_in = NULL, *rd_packets_out = NULL, *rd_packets_m_in = NULL, *rd_packets_m_out = NULL;
+
+                if (unlikely(!st)) {
+                    st = rrdset_create_localhost("system",
+                                                 "packets",
+                                                 NULL,
+                                                 "network",
+                                                 NULL,
+                                                 "Network Packets",
+                                                 "packets/s",
+                            "freebsd.plugin",
+                                                 "getifaddrs",
+                            NETDATA_CHART_PRIO_SYSTEM_PACKETS,
+                                                 update_every,
+                                                 RRDSET_TYPE_LINE
+                                                 );
+
+                    rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
+
+                    rd_packets_in    = rrddim_add(st, "received",           NULL,  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_packets_out   = rrddim_add(st, "sent",               NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_packets_m_in  = rrddim_add(st, "multicast_received", NULL,  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_packets_m_out = rrddim_add(st, "multicast_sent",     NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                } else
+                    rrdset_next(st);
+
+                rrddim_set_by_pointer(st, rd_packets_in,    iftot.ift_ipackets);
+                rrddim_set_by_pointer(st, rd_packets_out,   iftot.ift_opackets);
+                rrddim_set_by_pointer(st, rd_packets_m_in,  iftot.ift_imcasts);
+                rrddim_set_by_pointer(st, rd_packets_m_out, iftot.ift_omcasts);
+                rrdset_done(st);
+            }
 
             // --------------------------------------------------------------------
 
@@ -228,9 +340,9 @@ int do_getifaddrs(int update_every, usec_t dt) {
                                                  NULL,
                                                  "IPv4 Bandwidth",
                                                  "kilobits/s",
-                                                 "freebsd",
+                            "freebsd.plugin",
                                                  "getifaddrs",
-                                                 500,
+                            NETDATA_CHART_PRIO_SYSTEM_IPV4,
                                                  update_every,
                                                  RRDSET_TYPE_AREA
                     );
@@ -267,9 +379,9 @@ int do_getifaddrs(int update_every, usec_t dt) {
                                                  NULL,
                                                  "IPv6 Bandwidth",
                                                  "kilobits/s",
-                                                 "freebsd",
+                            "freebsd.plugin",
                                                  "getifaddrs",
-                                                 500,
+                            NETDATA_CHART_PRIO_SYSTEM_IPV6,
                                                  update_every,
                                                  RRDSET_TYPE_AREA
                     );
@@ -337,9 +449,9 @@ int do_getifaddrs(int update_every, usec_t dt) {
                                                                     "net.net",
                                                                     "Bandwidth",
                                                                     "kilobits/s",
-                                                                    "freebsd",
+                                "freebsd.plugin",
                                                                     "getifaddrs",
-                                                                    7000,
+                                NETDATA_CHART_PRIO_FIRST_NET_IFACE,
                                                                     update_every,
                                                                     RRDSET_TYPE_AREA
                         );
@@ -366,9 +478,9 @@ int do_getifaddrs(int update_every, usec_t dt) {
                                                                   "net.packets",
                                                                   "Packets",
                                                                   "packets/s",
-                                                                  "freebsd",
+                                "freebsd.plugin",
                                                                   "getifaddrs",
-                                                                  7001,
+                                NETDATA_CHART_PRIO_FIRST_NET_PACKETS,
                                                                   update_every,
                                                                   RRDSET_TYPE_LINE
                         );
@@ -405,9 +517,9 @@ int do_getifaddrs(int update_every, usec_t dt) {
                                                                  "net.errors",
                                                                  "Interface Errors",
                                                                  "errors/s",
-                                                                 "freebsd",
+                                "freebsd.plugin",
                                                                  "getifaddrs",
-                                                                 7002,
+                                NETDATA_CHART_PRIO_FIRST_NET_ERRORS,
                                                                  update_every,
                                                                  RRDSET_TYPE_LINE
                         );
@@ -439,9 +551,9 @@ int do_getifaddrs(int update_every, usec_t dt) {
                                                                 "net.drops",
                                                                 "Interface Drops",
                                                                 "drops/s",
-                                                                "freebsd",
+                                "freebsd.plugin",
                                                                 "getifaddrs",
-                                                                7003,
+                                NETDATA_CHART_PRIO_FIRST_NET_DROPS,
                                                                 update_every,
                                                                 RRDSET_TYPE_LINE
                         );
@@ -474,9 +586,9 @@ int do_getifaddrs(int update_every, usec_t dt) {
                                                                  "net.events",
                                                                  "Network Interface Events",
                                                                  "events/s",
-                                                                 "freebsd",
+                                "freebsd.plugin",
                                                                  "getifaddrs",
-                                                                 7006,
+                                NETDATA_CHART_PRIO_FIRST_NET_EVENTS,
                                                                  update_every,
                                                                  RRDSET_TYPE_LINE
                         );
diff --git a/src/freebsd_getmntinfo.c b/collectors/freebsd.plugin/freebsd_getmntinfo.c
index ea82b9fd1..c86f23166 100644
--- a/src/freebsd_getmntinfo.c
+++ b/collectors/freebsd.plugin/freebsd_getmntinfo.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_freebsd.h"
 
 #include <sys/mount.h>
 
@@ -225,9 +227,9 @@ int do_getmntinfo(int update_every, usec_t dt) {
                                                               "disk.space",
                                                               title,
                                                               "GB",
-                                                              "freebsd",
+                                "freebsd.plugin",
                                                               "getmntinfo",
-                                                              2023,
+                                NETDATA_CHART_PRIO_DISKSPACE_SPACE,
                                                               update_every,
                                                               RRDSET_TYPE_STACKED
                         );
@@ -264,9 +266,9 @@ int do_getmntinfo(int update_every, usec_t dt) {
                                                                "disk.inodes",
                                                                title,
                                                                "Inodes",
-                                                               "freebsd",
+                                "freebsd.plugin",
                                                                "getmntinfo",
-                                                               2024,
+                                NETDATA_CHART_PRIO_DISKSPACE_INODES,
                                                                update_every,
                                                                RRDSET_TYPE_STACKED
                         );
diff --git a/src/freebsd_ipfw.c b/collectors/freebsd.plugin/freebsd_ipfw.c
index 81264b3f3..c256da8b3 100644
--- a/src/freebsd_ipfw.c
+++ b/collectors/freebsd.plugin/freebsd_ipfw.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_freebsd.h"
 
 #include <netinet/ip_fw.h>
 
@@ -162,9 +164,9 @@ int do_ipfw(int update_every, usec_t dt) {
                                                  NULL,
                                                  "Memory allocated by rules",
                                                  "bytes",
-                                                 "freebsd",
+                                                 "freebsd.plugin",
                                                  "ipfw",
-                                                 3005,
+                                                 NETDATA_CHART_PRIO_IPFW_MEM,
                                                  update_every,
                                                  RRDSET_TYPE_STACKED
                 );
@@ -195,9 +197,9 @@ int do_ipfw(int update_every, usec_t dt) {
                                                          NULL,
                                                          "Packets",
                                                          "packets/s",
-                                                         "freebsd",
+                                                 "freebsd.plugin",
                                                          "ipfw",
-                                                         3001,
+                                                         NETDATA_CHART_PRIO_IPFW_PACKETS,
                                                          update_every,
                                                          RRDSET_TYPE_STACKED
                     );
@@ -212,9 +214,9 @@ int do_ipfw(int update_every, usec_t dt) {
                                                        NULL,
                                                        "Bytes",
                                                        "bytes/s",
-                                                       "freebsd",
+                                                 "freebsd.plugin",
                                                        "ipfw",
-                                                       3002,
+                                                       NETDATA_CHART_PRIO_IPFW_BYTES,
                                                        update_every,
                                                        RRDSET_TYPE_STACKED
                     );
@@ -316,9 +318,9 @@ int do_ipfw(int update_every, usec_t dt) {
                                                     NULL,
                                                     "Active rules",
                                                     "rules",
-                                                    "freebsd",
+                                                 "freebsd.plugin",
                                                     "ipfw",
-                                                    3003,
+                                                    NETDATA_CHART_PRIO_IPFW_ACTIVE,
                                                     update_every,
                                                     RRDSET_TYPE_STACKED
                 );
@@ -333,9 +335,9 @@ int do_ipfw(int update_every, usec_t dt) {
                                                      NULL,
                                                      "Expired rules",
                                                      "rules",
-                                                     "freebsd",
+                                                 "freebsd.plugin",
                                                      "ipfw",
-                                                     3004,
+                                                     NETDATA_CHART_PRIO_IPFW_EXPIRED,
                                                      update_every,
                                                      RRDSET_TYPE_STACKED
                 );
diff --git a/src/freebsd_kstat_zfs.c b/collectors/freebsd.plugin/freebsd_kstat_zfs.c
index 1bd48d4bf..93dfc320b 100644
--- a/src/freebsd_kstat_zfs.c
+++ b/collectors/freebsd.plugin/freebsd_kstat_zfs.c
@@ -1,5 +1,7 @@
-#include "common.h"
-#include "zfs_common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_freebsd.h"
+#include "collectors/proc.plugin/zfs_common.h"
 
 extern struct arcstats arcstats;
 
@@ -207,8 +209,8 @@ int do_kstat_zfs_misc_arcstats(int update_every, usec_t dt) {
     // missing mib: GETSYSCTL_SIMPLE("kstat.zfs.misc.arcstats.arc_need_free", mibs.arc_need_free, arcstats.arc_need_free);
     // missing mib: GETSYSCTL_SIMPLE("kstat.zfs.misc.arcstats.arc_sys_free", mibs.arc_sys_free, arcstats.arc_sys_free);
 
-    generate_charts_arcstats("freebsd", update_every);
-    generate_charts_arc_summary("freebsd", update_every);
+    generate_charts_arcstats("freebsd", "zfs", update_every);
+    generate_charts_arc_summary("freebsd", "zfs", update_every);
 
     return 0;
 }
diff --git a/src/freebsd_sysctl.c b/collectors/freebsd.plugin/freebsd_sysctl.c
index 1e11255aa..da5a351de 100644
--- a/src/freebsd_sysctl.c
+++ b/collectors/freebsd.plugin/freebsd_sysctl.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_freebsd.h"
 
 #include <sys/vmmeter.h>
 #include <vm/vm_param.h>
@@ -84,6 +86,10 @@ typedef struct __vmmeter vmmeter_t;
 typedef struct vmmeter vmmeter_t;
 #endif
 
+#if (__FreeBSD_version >= 1101516 && __FreeBSD_version < 1200000) || __FreeBSD_version >= 1200015
+#define NETDATA_COLLECT_LAUNDRY 1
+#endif
+
 // --------------------------------------------------------------------------------------------------------------------
 // FreeBSD plugin initialization
 
@@ -141,9 +147,9 @@ int do_vm_loadavg(int update_every, usec_t dt){
                         NULL,
                         "System Load Average",
                         "load",
-                        "freebsd",
+                        "freebsd.plugin",
                         "vm.loadavg",
-                        100,
+                        NETDATA_CHART_PRIO_SYSTEM_LOAD,
                         (update_every < MIN_LOADAVG_UPDATE_EVERY) ?
                         MIN_LOADAVG_UPDATE_EVERY : update_every, RRDSET_TYPE_LINE
                 );
@@ -210,9 +216,9 @@ int do_vm_vmtotal(int update_every, usec_t dt) {
                             NULL,
                             "System Active Processes",
                             "processes",
-                            "freebsd",
+                            "freebsd.plugin",
                             "vm.vmtotal",
-                            750,
+                            NETDATA_CHART_PRIO_SYSTEM_ACTIVE_PROCESSES,
                             update_every,
                             RRDSET_TYPE_LINE
                     );
@@ -239,9 +245,9 @@ int do_vm_vmtotal(int update_every, usec_t dt) {
                             NULL,
                             "System Processes",
                             "processes",
-                            "freebsd",
+                            "freebsd.plugin",
                             "vm.vmtotal",
-                            600,
+                            NETDATA_CHART_PRIO_SYSTEM_PROCESSES,
                             update_every,
                             RRDSET_TYPE_LINE
                     );
@@ -271,7 +277,7 @@ int do_vm_vmtotal(int update_every, usec_t dt) {
                             NULL,
                             "Committed (Allocated) Memory",
                             "MB",
-                            "freebsd",
+                            "freebsd.plugin",
                             "vm.vmtotal",
                             NETDATA_CHART_PRIO_MEM_SYSTEM_COMMITTED,
                             update_every,
@@ -330,9 +336,10 @@ int do_kern_cp_time(int update_every, usec_t dt) {
                         "system.cpu",
                         "Total CPU utilization",
                         "percentage",
-                        "freebsd",
+                        "freebsd.plugin",
                         "kern.cp_time",
-                        100, update_every,
+                        NETDATA_CHART_PRIO_SYSTEM_CPU,
+                        update_every,
                         RRDSET_TYPE_STACKED
                 );
 
@@ -411,9 +418,9 @@ int do_kern_cp_times(int update_every, usec_t dt) {
                             "cpu.cpu",
                             "Core utilization",
                             "percentage",
-                            "freebsd",
+                            "freebsd.plugin",
                             "kern.cp_times",
-                            1000,
+                            NETDATA_CHART_PRIO_CPU_PER_CORE,
                             update_every,
                             RRDSET_TYPE_STACKED
                     );
@@ -495,9 +502,9 @@ int do_dev_cpu_temperature(int update_every, usec_t dt) {
                 "cpu.temperatute",
                 "Core temperature",
                 "Celsius",
-                "freebsd",
+                "freebsd.plugin",
                 "dev.cpu.temperature",
-                1050,
+                NETDATA_CHART_PRIO_CPU_TEMPERATURE,
                 update_every,
                 RRDSET_TYPE_LINE
         );
@@ -548,9 +555,9 @@ int do_dev_cpu_0_freq(int update_every, usec_t dt) {
                     NULL,
                     "Current CPU Scaling Frequency",
                     "MHz",
-                    "freebsd",
+                    "freebsd.plugin",
                     "dev.cpu.0.freq",
-                    5003,
+                    NETDATA_CHART_PRIO_CPUFREQ_SCALING_CUR_FREQ,
                     update_every,
                     RRDSET_TYPE_LINE
             );
@@ -612,9 +619,9 @@ int do_hw_intcnt(int update_every, usec_t dt) {
                         NULL,
                         "Total Hardware Interrupts",
                         "interrupts/s",
-                        "freebsd",
+                        "freebsd.plugin",
                         "hw.intrcnt",
-                        900,
+                        NETDATA_CHART_PRIO_SYSTEM_INTR,
                         update_every,
                         RRDSET_TYPE_LINE
                 );
@@ -657,9 +664,9 @@ int do_hw_intcnt(int update_every, usec_t dt) {
                             NULL,
                             "System interrupts",
                             "interrupts/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "hw.intrcnt",
-                            1000,
+                            NETDATA_CHART_PRIO_SYSTEM_INTERRUPTS,
                             update_every,
                             RRDSET_TYPE_STACKED
                     );
@@ -715,9 +722,9 @@ int do_vm_stats_sys_v_intr(int update_every, usec_t dt) {
                     NULL,
                     "Device Interrupts",
                     "interrupts/s",
-                    "freebsd",
+                    "freebsd.plugin",
                     "vm.stats.sys.v_intr",
-                    1000,
+                    NETDATA_CHART_PRIO_SYSTEM_DEV_INTR,
                     update_every,
                     RRDSET_TYPE_LINE
             );
@@ -761,9 +768,9 @@ int do_vm_stats_sys_v_soft(int update_every, usec_t dt) {
                     NULL,
                     "Software Interrupts",
                     "interrupts/s",
-                    "freebsd",
+                    "freebsd.plugin",
                     "vm.stats.sys.v_soft",
-                    1100,
+                    NETDATA_CHART_PRIO_SYSTEM_SOFT_INTR,
                     update_every,
                     RRDSET_TYPE_LINE
             );
@@ -807,9 +814,9 @@ int do_vm_stats_sys_v_swtch(int update_every, usec_t dt) {
                     NULL,
                     "CPU Context Switches",
                     "context switches/s",
-                    "freebsd",
+                    "freebsd.plugin",
                     "vm.stats.sys.v_swtch",
-                    800,
+                    NETDATA_CHART_PRIO_SYSTEM_CTXT,
                     update_every,
                     RRDSET_TYPE_LINE
             );
@@ -853,9 +860,9 @@ int do_vm_stats_sys_v_forks(int update_every, usec_t dt) {
                     NULL,
                     "Started Processes",
                     "processes/s",
-                    "freebsd",
+                    "freebsd.plugin",
                     "vm.stats.sys.v_swtch",
-                    700,
+                    NETDATA_CHART_PRIO_SYSTEM_FORKS,
                     update_every,
                     RRDSET_TYPE_LINE
             );
@@ -930,9 +937,9 @@ int do_vm_swap_info(int update_every, usec_t dt) {
                     NULL,
                     "System Swap",
                     "MB",
-                    "freebsd",
+                    "freebsd.plugin",
                     "vm.swap_info",
-                    201,
+                    NETDATA_CHART_PRIO_SYSTEM_SWAP,
                     update_every,
                     RRDSET_TYPE_STACKED
             );
@@ -958,7 +965,8 @@ int do_vm_swap_info(int update_every, usec_t dt) {
 int do_system_ram(int update_every, usec_t dt) {
     (void)dt;
     static int mib_active_count[4] = {0, 0, 0, 0}, mib_inactive_count[4] = {0, 0, 0, 0}, mib_wire_count[4] = {0, 0, 0, 0},
-               mib_cache_count[4] = {0, 0, 0, 0}, mib_vfs_bufspace[2] = {0, 0}, mib_free_count[4] = {0, 0, 0, 0};
+               mib_cache_count[4] = {0, 0, 0, 0}, mib_laundry_count[4] = {0, 0, 0, 0}, mib_vfs_bufspace[2] = {0, 0},
+               mib_free_count[4] = {0, 0, 0, 0};
     vmmeter_t vmmeter_data;
     int vfs_bufspace_count;
 
@@ -968,6 +976,9 @@ int do_system_ram(int update_every, usec_t dt) {
 #if __FreeBSD_version < 1200016
                  GETSYSCTL_SIMPLE("vm.stats.vm.v_cache_count",    mib_cache_count,    vmmeter_data.v_cache_count) ||
 #endif
+#if defined(NETDATA_COLLECT_LAUNDRY)
+                 GETSYSCTL_SIMPLE("vm.stats.vm.v_laundry_count",  mib_laundry_count,  vmmeter_data.v_laundry_count) ||
+#endif
                  GETSYSCTL_SIMPLE("vfs.bufspace",                 mib_vfs_bufspace,     vfs_bufspace_count) ||
                  GETSYSCTL_SIMPLE("vm.stats.vm.v_free_count",     mib_free_count,     vmmeter_data.v_free_count))) {
         error("DISABLED: system.ram chart");
@@ -978,8 +989,8 @@ int do_system_ram(int update_every, usec_t dt) {
         // --------------------------------------------------------------------
 
         static RRDSET *st = NULL;
-        static RRDDIM *rd_free = NULL, *rd_active = NULL, *rd_inactive = NULL,
-                      *rd_wired = NULL, *rd_cache = NULL, *rd_buffers = NULL;
+        static RRDDIM *rd_free = NULL, *rd_active = NULL, *rd_inactive = NULL, *rd_wired = NULL,
+                      *rd_cache = NULL, *rd_laundry = NULL, *rd_buffers = NULL;
 
         if (unlikely(!st)) {
             st = rrdset_create_localhost(
@@ -990,9 +1001,9 @@ int do_system_ram(int update_every, usec_t dt) {
                     NULL,
                     "System RAM",
                     "MB",
-                    "freebsd",
+                    "freebsd.plugin",
                     "system.ram",
-                    200,
+                    NETDATA_CHART_PRIO_SYSTEM_RAM,
                     update_every,
                     RRDSET_TYPE_STACKED
             );
@@ -1004,6 +1015,9 @@ int do_system_ram(int update_every, usec_t dt) {
 #if __FreeBSD_version < 1200016
             rd_cache    = rrddim_add(st, "cache",    NULL, system_pagesize, MEGA_FACTOR, RRD_ALGORITHM_ABSOLUTE);
 #endif
+#if defined(NETDATA_COLLECT_LAUNDRY)
+            rd_laundry  = rrddim_add(st, "laundry",  NULL, system_pagesize, MEGA_FACTOR, RRD_ALGORITHM_ABSOLUTE);
+#endif
             rd_buffers  = rrddim_add(st, "buffers",  NULL, 1, MEGA_FACTOR, RRD_ALGORITHM_ABSOLUTE);
         }
         else rrdset_next(st);
@@ -1015,6 +1029,9 @@ int do_system_ram(int update_every, usec_t dt) {
 #if __FreeBSD_version < 1200016
         rrddim_set_by_pointer(st, rd_cache,    vmmeter_data.v_cache_count);
 #endif
+#if defined(NETDATA_COLLECT_LAUNDRY)
+        rrddim_set_by_pointer(st, rd_laundry,  vmmeter_data.v_laundry_count);
+#endif
         rrddim_set_by_pointer(st, rd_buffers,  vfs_bufspace_count);
         rrdset_done(st);
     }
@@ -1051,9 +1068,9 @@ int do_vm_stats_sys_v_swappgs(int update_every, usec_t dt) {
                     NULL,
                     "Swap I/O",
                     "kilobytes/s",
-                    "freebsd",
+                    "freebsd.plugin",
                     "vm.stats.vm.v_swappgs",
-                    250,
+                    NETDATA_CHART_PRIO_SYSTEM_SWAPIO,
                     update_every,
                     RRDSET_TYPE_AREA
             );
@@ -1105,7 +1122,7 @@ int do_vm_stats_sys_v_pgfaults(int update_every, usec_t dt) {
                     NULL,
                     "Memory Page Faults",
                     "page faults/s",
-                    "freebsd",
+                    "freebsd.plugin",
                     "vm.stats.vm.v_pgfaults",
                     NETDATA_CHART_PRIO_MEM_SYSTEM_PGFAULTS,
                     update_every,
@@ -1187,9 +1204,9 @@ int do_kern_ipc_sem(int update_every, usec_t dt) {
                         NULL,
                         "IPC Semaphores",
                         "semaphores",
-                        "freebsd",
+                        "freebsd.plugin",
                         "kern.ipc.sem",
-                        1000,
+                        NETDATA_CHART_PRIO_SYSTEM_IPC_SEMAPHORES,
                         update_every,
                         RRDSET_TYPE_AREA
                 );
@@ -1212,9 +1229,9 @@ int do_kern_ipc_sem(int update_every, usec_t dt) {
                         NULL,
                         "IPC Semaphore Arrays",
                         "arrays",
-                        "freebsd",
+                        "freebsd.plugin",
                         "kern.ipc.sem",
-                        1000,
+                        NETDATA_CHART_PRIO_SYSTEM_IPC_SEM_ARRAYS,
                         update_every,
                         RRDSET_TYPE_AREA
                 );
@@ -1286,9 +1303,9 @@ int do_kern_ipc_shm(int update_every, usec_t dt) {
                         NULL,
                         "IPC Shared Memory Segments",
                         "segments",
-                        "freebsd",
+                        "freebsd.plugin",
                         "kern.ipc.shm",
-                        1000,
+                        NETDATA_CHART_PRIO_SYSTEM_IPC_SHARED_MEM_SEGS,
                         update_every,
                         RRDSET_TYPE_AREA
                 );
@@ -1311,9 +1328,9 @@ int do_kern_ipc_shm(int update_every, usec_t dt) {
                         NULL,
                         "IPC Shared Memory Segments Size",
                         "kilobytes",
-                        "freebsd",
+                        "freebsd.plugin",
                         "kern.ipc.shm",
-                        1000,
+                        NETDATA_CHART_PRIO_SYSTEM_IPC_SHARED_MEM_SIZE,
                         update_every,
                         RRDSET_TYPE_AREA
                 );
@@ -1391,9 +1408,9 @@ int do_kern_ipc_msq(int update_every, usec_t dt) {
                         NULL,
                         "Number of IPC Message Queues",
                         "queues",
-                        "freebsd",
+                        "freebsd.plugin",
                         "kern.ipc.msq",
-                        990,
+                        NETDATA_CHART_PRIO_SYSTEM_IPC_MSQ_QUEUES,
                         update_every,
                         RRDSET_TYPE_AREA
                 );
@@ -1416,9 +1433,9 @@ int do_kern_ipc_msq(int update_every, usec_t dt) {
                         NULL,
                         "Number of Messages in IPC Message Queues",
                         "messages",
-                        "freebsd",
+                        "freebsd.plugin",
                         "kern.ipc.msq",
-                        1000,
+                        NETDATA_CHART_PRIO_SYSTEM_IPC_MSQ_MESSAGES,
                         update_every,
                         RRDSET_TYPE_AREA
                 );
@@ -1441,9 +1458,9 @@ int do_kern_ipc_msq(int update_every, usec_t dt) {
                         NULL,
                         "Size of IPC Message Queues",
                         "bytes",
-                        "freebsd",
+                        "freebsd.plugin",
                         "kern.ipc.msq",
-                        1100,
+                        NETDATA_CHART_PRIO_SYSTEM_IPC_MSQ_SIZE,
                         update_every,
                         RRDSET_TYPE_LINE
                 );
@@ -1485,9 +1502,9 @@ int do_uptime(int update_every, usec_t dt) {
                 NULL,
                 "System Uptime",
                 "seconds",
-                "freebsd",
+                "freebsd.plugin",
                 "uptime",
-                1000,
+                NETDATA_CHART_PRIO_SYSTEM_UPTIME,
                 update_every,
                 RRDSET_TYPE_LINE
         );
@@ -1613,9 +1630,9 @@ int do_net_isr(int update_every, usec_t dt) {
                     NULL,
                     "System softnet_stat",
                     "events/s",
-                    "freebsd",
+                    "freebsd.plugin",
                     "net.isr",
-                    955,
+                    NETDATA_CHART_PRIO_SYSTEM_SOFTNET_STAT,
                     update_every,
                     RRDSET_TYPE_LINE
             );
@@ -1666,9 +1683,9 @@ int do_net_isr(int update_every, usec_t dt) {
                         NULL,
                         "Per CPU netisr statistics",
                         "events/s",
-                        "freebsd",
+                        "freebsd.plugin",
                         "net.isr",
-                        1101 + i,
+                        NETDATA_CHART_PRIO_SOFTNET_PER_CORE + i,
                         update_every,
                         RRDSET_TYPE_LINE
                 );
@@ -1728,7 +1745,7 @@ int do_net_inet_tcp_states(int update_every, usec_t dt) {
                     NULL,
                     "IPv4 TCP Connections",
                     "active connections",
-                    "freebsd",
+                    "freebsd.plugin",
                     "net.inet.tcp.states",
                     2500,
                     update_every,
@@ -1812,7 +1829,7 @@ int do_net_inet_tcp_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv4 TCP Packets",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.tcp.stats",
                             2600,
                             update_every,
@@ -1844,7 +1861,7 @@ int do_net_inet_tcp_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv4 TCP Errors",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.tcp.stats",
                             2700,
                             update_every,
@@ -1886,7 +1903,7 @@ int do_net_inet_tcp_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv4 TCP Handshake Issues",
                             "events/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.tcp.stats",
                             2900,
                             update_every,
@@ -1927,7 +1944,7 @@ int do_net_inet_tcp_stats(int update_every, usec_t dt) {
                             NULL,
                             "TCP Connection Aborts",
                             "connections/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.tcp.stats",
                             3010,
                             update_every,
@@ -1967,7 +1984,7 @@ int do_net_inet_tcp_stats(int update_every, usec_t dt) {
                             NULL,
                             "TCP Out-Of-Order Queue",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.tcp.stats",
                             3050,
                             update_every,
@@ -1999,7 +2016,7 @@ int do_net_inet_tcp_stats(int update_every, usec_t dt) {
                             NULL,
                             "TCP SYN Cookies",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.tcp.stats",
                             3100,
                             update_every,
@@ -2036,7 +2053,7 @@ int do_net_inet_tcp_stats(int update_every, usec_t dt) {
                             NULL,
                             "TCP Listen Socket Issues",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.tcp.stats",
                             3015,
                             update_every,
@@ -2070,7 +2087,7 @@ int do_net_inet_tcp_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv4 ECN Statistics",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.tcp.stats",
                             8700,
                             update_every,
@@ -2144,7 +2161,7 @@ int do_net_inet_udp_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv4 UDP Packets",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.udp.stats",
                             2601,
                             update_every,
@@ -2177,7 +2194,7 @@ int do_net_inet_udp_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv4 UDP Errors",
                             "events/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.udp.stats",
                             2701,
                             update_every,
@@ -2263,7 +2280,7 @@ int do_net_inet_icmp_stats(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 ICMP Packets"
                             , "packets/s"
-                            , "freebsd"
+                            , "freebsd.plugin"
                             , "net.inet.icmp.stats"
                             , 2602
                             , update_every
@@ -2296,7 +2313,7 @@ int do_net_inet_icmp_stats(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 ICMP Errors"
                             , "packets/s"
-                            , "freebsd"
+                            , "freebsd.plugin"
                             , "net.inet.icmp.stats"
                             , 2603
                             , update_every
@@ -2332,7 +2349,7 @@ int do_net_inet_icmp_stats(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 ICMP Messages"
                             , "packets/s"
-                            , "freebsd"
+                            , "freebsd.plugin"
                             , "net.inet.icmp.stats"
                             , 2604
                             , update_every
@@ -2410,7 +2427,7 @@ int do_net_inet_ip_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv4 Packets",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.ip.stats",
                             3000,
                             update_every,
@@ -2446,7 +2463,7 @@ int do_net_inet_ip_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv4 Fragments Sent",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.ip.stats",
                             3010,
                             update_every,
@@ -2482,7 +2499,7 @@ int do_net_inet_ip_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv4 Fragments Reassembly",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.ip.stats",
                             3011,
                             update_every,
@@ -2520,7 +2537,7 @@ int do_net_inet_ip_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv4 Errors",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet.ip.stats",
                             3002,
                             update_every,
@@ -2611,7 +2628,7 @@ int do_net_inet6_ip6_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv6 Packets",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet6.ip6.stats",
                             3000,
                             update_every,
@@ -2651,7 +2668,7 @@ int do_net_inet6_ip6_stats(int update_every, usec_t dt) {
                              NULL,
                              "IPv6 Fragments Sent",
                              "packets/s",
-                             "freebsd",
+                            "freebsd.plugin",
                              "net.inet6.ip6.stats",
                              3010,
                              update_every,
@@ -2691,7 +2708,7 @@ int do_net_inet6_ip6_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv6 Fragments Reassembly",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet6.ip6.stats",
                             3011,
                             update_every,
@@ -2742,7 +2759,7 @@ int do_net_inet6_ip6_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv6 Errors",
                             "packets/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet6.ip6.stats",
                             3002,
                             update_every,
@@ -2856,7 +2873,7 @@ int do_net_inet6_icmp6_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv6 ICMP Messages",
                             "messages/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet6.icmp6.stats",
                             10000,
                             update_every,
@@ -2891,7 +2908,7 @@ int do_net_inet6_icmp6_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv6 ICMP Redirects",
                             "redirects/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet6.icmp6.stats",
                             10050,
                             update_every,
@@ -2938,7 +2955,7 @@ int do_net_inet6_icmp6_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv6 ICMP Errors",
                             "errors/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet6.icmp6.stats",
                             10100,
                             update_every,
@@ -2993,7 +3010,7 @@ int do_net_inet6_icmp6_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv6 ICMP Echo",
                             "messages/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet6.icmp6.stats",
                             10200,
                             update_every,
@@ -3036,7 +3053,7 @@ int do_net_inet6_icmp6_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv6 Router Messages",
                             "messages/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet6.icmp6.stats",
                             10400,
                             update_every,
@@ -3079,7 +3096,7 @@ int do_net_inet6_icmp6_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv6 Neighbor Messages",
                             "messages/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet6.icmp6.stats",
                             10500,
                             update_every,
@@ -3129,7 +3146,7 @@ int do_net_inet6_icmp6_stats(int update_every, usec_t dt) {
                             NULL,
                             "IPv6 ICMP Types",
                             "messages/s",
-                            "freebsd",
+                            "freebsd.plugin",
                             "net.inet6.icmp6.stats",
                             10700,
                             update_every,
diff --git a/src/plugin_freebsd.c b/collectors/freebsd.plugin/plugin_freebsd.c
index a0d3dc2ea..5cde37113 100644
--- a/src/plugin_freebsd.c
+++ b/collectors/freebsd.plugin/plugin_freebsd.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_freebsd.h"
 
 static struct freebsd_module {
     const char *name;
@@ -113,7 +115,7 @@ void *freebsd_main(void *ptr) {
             debug(D_PROCNETDEV_LOOP, "FREEBSD calling %s.", pm->name);
 
             pm->enabled = !pm->func(localhost->rrd_update_every, hb_dt);
-            pm->duration = heartbeat_dt_usec(&hb) - duration;
+            pm->duration = heartbeat_monotonic_dt_to_now_usec(&hb) - duration;
             duration += pm->duration;
 
             if(unlikely(netdata_exit)) break;
diff --git a/collectors/freebsd.plugin/plugin_freebsd.h b/collectors/freebsd.plugin/plugin_freebsd.h
new file mode 100644
index 000000000..ab46080be
--- /dev/null
+++ b/collectors/freebsd.plugin/plugin_freebsd.h
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_PLUGIN_FREEBSD_H
+#define NETDATA_PLUGIN_FREEBSD_H 1
+
+#include "daemon/common.h"
+
+#if (TARGET_OS == OS_FREEBSD)
+
+#define NETDATA_PLUGIN_HOOK_FREEBSD \
+    { \
+        .name = "PLUGIN[freebsd]", \
+        .config_section = CONFIG_SECTION_PLUGINS, \
+        .config_name = "freebsd", \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = freebsd_main \
+    },
+
+
+#include <sys/sysctl.h>
+
+#define KILO_FACTOR 1024
+#define MEGA_FACTOR 1048576     // 1024 * 1024
+#define GIGA_FACTOR 1073741824  // 1024 * 1024 * 1024
+
+#define MAX_INT_DIGITS 10 // maximum number of digits for int
+
+void *freebsd_main(void *ptr);
+
+extern int freebsd_plugin_init();
+
+extern int do_vm_loadavg(int update_every, usec_t dt);
+extern int do_vm_vmtotal(int update_every, usec_t dt);
+extern int do_kern_cp_time(int update_every, usec_t dt);
+extern int do_kern_cp_times(int update_every, usec_t dt);
+extern int do_dev_cpu_temperature(int update_every, usec_t dt);
+extern int do_dev_cpu_0_freq(int update_every, usec_t dt);
+extern int do_hw_intcnt(int update_every, usec_t dt);
+extern int do_vm_stats_sys_v_intr(int update_every, usec_t dt);
+extern int do_vm_stats_sys_v_soft(int update_every, usec_t dt);
+extern int do_vm_stats_sys_v_swtch(int update_every, usec_t dt);
+extern int do_vm_stats_sys_v_forks(int update_every, usec_t dt);
+extern int do_vm_swap_info(int update_every, usec_t dt);
+extern int do_system_ram(int update_every, usec_t dt);
+extern int do_vm_stats_sys_v_swappgs(int update_every, usec_t dt);
+extern int do_vm_stats_sys_v_pgfaults(int update_every, usec_t dt);
+extern int do_kern_ipc_sem(int update_every, usec_t dt);
+extern int do_kern_ipc_shm(int update_every, usec_t dt);
+extern int do_kern_ipc_msq(int update_every, usec_t dt);
+extern int do_uptime(int update_every, usec_t dt);
+extern int do_net_isr(int update_every, usec_t dt);
+extern int do_net_inet_tcp_states(int update_every, usec_t dt);
+extern int do_net_inet_tcp_stats(int update_every, usec_t dt);
+extern int do_net_inet_udp_stats(int update_every, usec_t dt);
+extern int do_net_inet_icmp_stats(int update_every, usec_t dt);
+extern int do_net_inet_ip_stats(int update_every, usec_t dt);
+extern int do_net_inet6_ip6_stats(int update_every, usec_t dt);
+extern int do_net_inet6_icmp6_stats(int update_every, usec_t dt);
+extern int do_getifaddrs(int update_every, usec_t dt);
+extern int do_getmntinfo(int update_every, usec_t dt);
+extern int do_kern_devstat(int update_every, usec_t dt);
+extern int do_kstat_zfs_misc_arcstats(int update_every, usec_t dt);
+extern int do_kstat_zfs_misc_zio_trim(int update_every, usec_t dt);
+extern int do_ipfw(int update_every, usec_t dt);
+
+#else // (TARGET_OS == OS_FREEBSD)
+
+#define NETDATA_PLUGIN_HOOK_FREEBSD
+
+#endif // (TARGET_OS == OS_FREEBSD)
+
+#endif /* NETDATA_PLUGIN_FREEBSD_H */
diff --git a/collectors/freeipmi.plugin/Makefile.am b/collectors/freeipmi.plugin/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/collectors/freeipmi.plugin/Makefile.am
@@ -0,0 +1,8 @@
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new file mode 100644
index 000000000..54a0035c6
--- /dev/null
+++ b/collectors/freeipmi.plugin/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/collectors/freeipmi.plugin/README.md b/collectors/freeipmi.plugin/README.md
new file mode 100644
index 000000000..f7c5cc148
--- /dev/null
+++ b/collectors/freeipmi.plugin/README.md
@@ -0,0 +1,180 @@
+netdata has a [freeipmi](https://www.gnu.org/software/freeipmi/) plugin.
+
+> FreeIPMI provides in-band and out-of-band IPMI software based on the IPMI v1.5/2.0 specification. The IPMI specification defines a set of interfaces for platform management and is implemented by a number vendors for system management. The features of IPMI that most users will be interested in are sensor monitoring, system event monitoring, power control, and serial-over-LAN (SOL).
+
+## compile `freeipmi.plugin`
+
+1. install `libipmimonitoring-dev` or `libipmimonitoring-devel` (`freeipmi-devel` on RHEL based OS) using the package manager of your system.
+
+2. re-install netdata from source. The installer will detect that the required libraries are now available and will also build `freeipmi.plugin`.
+
+Keep in mind IPMI requires root access, so the plugin is setuid to root.
+
+If you just installed the required IPMI tools, please run at least once the command `ipmimonitoring` and verify it returns sensors information. This command initialises IPMI configuration, so that the netdata plugin will be able to work.
+
+## netdata use
+
+The plugin creates (up to) 8 charts, based on the information collected from IPMI:
+
+1. number of sensors by state
+2. number of events in SEL
+3. Temperatures CELCIUS
+4. Temperatures FAHRENHEIT
+5. Voltages
+6. Currents
+7. Power
+8. Fans
+
+
+It also adds 2 alarms:
+
+1. Sensors in non-nominal state (i.e. warning and critical)
+2. SEL is non empty
+
+![image](https://cloud.githubusercontent.com/assets/2662304/23674138/88926a20-037d-11e7-89c0-20e74ee10cd1.png)
+
+The plugin does a speed test when it starts, to find out the duration needed by the IPMI processor to respond. Depending on the speed of your IPMI processor, charts may need several seconds to show up on the dashboard.
+
+## `freeipmi.plugin` configuration
+
+The plugin supports a few options. To see them, run:
+
+```sh
+# /usr/libexec/netdata/plugins.d/freeipmi.plugin -h
+
+ netdata freeipmi.plugin 1.8.0-546-g72ce5d6b_rolling
+ Copyright (C) 2016-2017 Costa Tsaousis <costa@tsaousis.gr>
+ Released under GNU General Public License v3 or later.
+ All rights reserved.
+
+ This program is a data collector plugin for netdata.
+
+ Available command line options:
+
+  SECONDS                 data collection frequency
+                          minimum: 5
+
+  debug                   enable verbose output
+                          default: disabled
+
+  sel
+  no-sel                  enable/disable SEL collection
+                          default: enabled
+
+  hostname HOST
+  username USER
+  password PASS           connect to remote IPMI host
+                          default: local IPMI processor
+
+  sdr-cache-dir PATH      directory for SDR cache files
+                          default: /tmp
+
+  sensor-config-file FILE filename to read sensor configuration
+                          default: system default
+
+  ignore N1,N2,N3,...     sensor IDs to ignore
+                          default: none
+
+  -v
+  -V
+  version                 print version and exit
+
+ Linux kernel module for IPMI is CPU hungry.
+ On Linux run this to lower kipmiN CPU utilization:
+ # echo 10 > /sys/module/ipmi_si/parameters/kipmid_max_busy_us
+
+ or create: /etc/modprobe.d/ipmi.conf with these contents:
+ options ipmi_si kipmid_max_busy_us=10
+
+ For more information:
+ https://github.com/ktsaou/netdata/tree/master/plugins/freeipmi.plugin
+
+```
+
+You can set these options in `/etc/netdata/netdata.conf` at this section:
+
+```
+[plugin:freeipmi]
+	update every = 5
+	command options = 
+```
+
+Append to `command options = ` the settings you need. The minimum `update every` is 5 (enforced internally by the plugin). IPMI is slow and CPU hungry. So, once every 5 seconds is pretty acceptable.
+
+## ignoring specific sensors
+
+Specific sensor IDs can be excluded from freeipmi tools by editing `/etc/freeipmi/freeipmi.conf` and setting the IDs to be ignored at `ipmi-sensors-exclude-record-ids`. **However this file is not used by `libipmimonitoring`** (the library used by netdata's `freeipmi.plugin`).
+
+So, `freeipmi.plugin` supports the option `ignore` that accepts a comma separated list of sensor IDs to ignore. To configure it, edit `/etc/netdata/netdata.conf` and set:
+
+```
+[plugin:freeipmi]
+	command options = ignore 1,2,3,4,...
+```
+
+To find the IDs to ignore, run the command `ipmimonitoring`. The first column is the wanted ID:
+
+```
+ID  | Name             | Type                     | State    | Reading    | Units | Event
+1   | Ambient Temp     | Temperature              | Nominal  | 26.00      | C     | 'OK'
+2   | Altitude         | Other Units Based Sensor | Nominal  | 480.00     | ft    | 'OK'
+3   | Avg Power        | Current                  | Nominal  | 100.00     | W     | 'OK'
+4   | Planar 3.3V      | Voltage                  | Nominal  | 3.29       | V     | 'OK'
+5   | Planar 5V        | Voltage                  | Nominal  | 4.90       | V     | 'OK'
+6   | Planar 12V       | Voltage                  | Nominal  | 11.99      | V     | 'OK'
+7   | Planar VBAT      | Voltage                  | Nominal  | 2.95       | V     | 'OK'
+8   | Fan 1A Tach      | Fan                      | Nominal  | 3132.00    | RPM   | 'OK'
+9   | Fan 1B Tach      | Fan                      | Nominal  | 2150.00    | RPM   | 'OK'
+10  | Fan 2A Tach      | Fan                      | Nominal  | 2494.00    | RPM   | 'OK'
+11  | Fan 2B Tach      | Fan                      | Nominal  | 1825.00    | RPM   | 'OK'
+12  | Fan 3A Tach      | Fan                      | Nominal  | 3538.00    | RPM   | 'OK'
+13  | Fan 3B Tach      | Fan                      | Nominal  | 2625.00    | RPM   | 'OK'
+14  | Fan 1            | Entity Presence          | Nominal  | N/A        | N/A   | 'Entity Present'
+15  | Fan 2            | Entity Presence          | Nominal  | N/A        | N/A   | 'Entity Present'
+...
+```
+
+
+## debugging
+
+You can run the plugin by hand:
+
+```sh
+# become user netdata
+sudo su -s /bin/sh netdata
+
+# run the plugin in debug mode
+/usr/libexec/netdata/plugins.d/freeipmi.plugin 5 debug
+```
+
+You will get verbose output on what the plugin does.
+
+## kipmi0 CPU usage
+
+There have been reports that kipmi is showing increased CPU when the IPMI is queried.
+
+[IBM has given a few explanations](http://www-01.ibm.com/support/docview.wss?uid=nas7d580df3d15874988862575fa0050f604).
+
+Check also [this stackexchange post](http://unix.stackexchange.com/questions/74900/kipmi0-eating-up-to-99-8-cpu-on-centos-6-4).
+
+To lower the CPU consumption of the system you can issue this command:
+
+```sh
+echo 10 > /sys/module/ipmi_si/parameters/kipmid_max_busy_us
+```
+
+You can also permanently set the above setting by creating the file `/etc/modprobe.d/ipmi.conf` with this content:
+
+```sh
+# prevent kipmi from consuming 100% CPU
+options ipmi_si kipmid_max_busy_us=10
+```
+
+This instructs the kernel IPMI module to pause for a tick between checking IPMI. Querying IPMI will be a lot slower now (e.g. several seconds for IPMI to respond), but `kipmi` will not use any noticeable CPU. You can also use a higher number (this is the number of microseconds to poll IPMI for a response, before waiting for a tick).
+
+If you need to disable IPMI for netdata, edit `/etc/netdata/netdata.conf` and set:
+
+```
+[plugins]
+    freeipmi = no
+```
diff --git a/src/freeipmi_plugin.c b/collectors/freeipmi.plugin/freeipmi_plugin.c
index df4c019a4..a1cff3af0 100644
--- a/src/freeipmi_plugin.c
+++ b/collectors/freeipmi.plugin/freeipmi_plugin.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
 /*
  *  netdata freeipmi.plugin
  *  Copyright (C) 2017 Costa Tsaousis
@@ -14,7 +15,7 @@
  *  UCRL-CODE-222073
  */
 
-#include "common.h"
+#include "../../libnetdata/libnetdata.h"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -27,6 +28,32 @@
 
 #ifdef HAVE_FREEIPMI
 
+// ----------------------------------------------------------------------------
+
+// callback required by fatal()
+void netdata_cleanup_and_exit(int ret) {
+    exit(ret);
+}
+
+// callbacks required by popen()
+void signals_block(void) {};
+void signals_unblock(void) {};
+void signals_reset(void) {};
+
+// callback required by eval()
+int health_variable_lookup(const char *variable, uint32_t hash, struct rrdcalc *rc, calculated_number *result) {
+    (void)variable;
+    (void)hash;
+    (void)rc;
+    (void)result;
+    return 0;
+};
+
+// required by get_system_cpus()
+char *netdata_configured_host_prefix = "";
+
+// ----------------------------------------------------------------------------
+
 #include <ipmi_monitoring.h>
 #include <ipmi_monitoring_bitmasks.h>
 
@@ -46,8 +73,8 @@ char *driver_device = NULL;     /* not used if probing */
 int protocol_version = -1; //IPMI_MONITORING_PROTOCOL_VERSION_1_5; /* or -1 for default */
 char *username = "foousername";
 char *password = "foopassword";
-unsigned char *k_g = NULL;
-unsigned int k_g_len = 0;
+unsigned char *ipmi_k_g = NULL;
+unsigned int ipmi_k_g_len = 0;
 int privilege_level = -1; // IPMI_MONITORING_PRIVILEGE_LEVEL_USER; /* or -1 for default */
 int authentication_type = -1; // IPMI_MONITORING_AUTHENTICATION_TYPE_MD5; /* or -1 for default */
 int cipher_suite_id = 0;        /* or -1 for default */
@@ -123,8 +150,8 @@ _init_ipmi_config (struct ipmi_monitoring_ipmi_config *ipmi_config)
     ipmi_config->protocol_version = protocol_version;
     ipmi_config->username = username;
     ipmi_config->password = password;
-    ipmi_config->k_g = k_g;
-    ipmi_config->k_g_len = k_g_len;
+    ipmi_config->k_g = ipmi_k_g;
+    ipmi_config->k_g_len = ipmi_k_g_len;
     ipmi_config->privilege_level = privilege_level;
     ipmi_config->authentication_type = authentication_type;
     ipmi_config->cipher_suite_id = cipher_suite_id;
@@ -557,6 +584,41 @@ static void excluded_record_ids_parse(const char *s) {
     }
 }
 
+static int *excluded_status_record_ids = NULL;
+size_t excluded_status_record_ids_length = 0;
+
+static void excluded_status_record_ids_parse(const char *s) {
+    if(!s) return;
+
+    while(*s) {
+        while(*s && !isdigit(*s)) s++;
+
+        if(isdigit(*s)) {
+            char *e;
+            unsigned long n = strtoul(s, &e, 10);
+            s = e;
+
+            if(n != 0) {
+                excluded_status_record_ids = realloc(excluded_status_record_ids, (excluded_status_record_ids_length + 1) * sizeof(int));
+                if(!excluded_status_record_ids) {
+                    fprintf(stderr, "freeipmi.plugin: failed to allocate memory. Exiting.");
+                    exit(1);
+                }
+                excluded_status_record_ids[excluded_status_record_ids_length++] = (int)n;
+            }
+        }
+    }
+
+    if(debug) {
+        fprintf(stderr, "freeipmi.plugin: excluded status record ids:");
+        size_t i;
+        for(i = 0; i < excluded_status_record_ids_length; i++) {
+            fprintf(stderr, " %d", excluded_status_record_ids[i]);
+        }
+        fprintf(stderr, "\n");
+    }
+}
+
 
 static int excluded_record_ids_check(int record_id) {
     size_t i;
@@ -569,6 +631,17 @@ static int excluded_record_ids_check(int record_id) {
     return 0;
 }
 
+static int excluded_status_record_ids_check(int record_id) {
+    size_t i;
+
+    for(i = 0; i < excluded_status_record_ids_length; i++) {
+        if(excluded_status_record_ids[i] == record_id)
+            return 1;
+    }
+
+    return 0;
+}
+
 static void netdata_get_sensor(
           int record_id
         , int sensor_number
@@ -641,6 +714,10 @@ static void netdata_get_sensor(
             break;
     }
 
+    // check if it is excluded
+    if(excluded_status_record_ids_check(record_id))
+        return;
+
     switch(sensor_state) {
         case IPMI_MONITORING_STATE_NOMINAL:
             netdata_sensors_states_nominal++;
@@ -672,10 +749,6 @@ static void netdata_get_sel(
 }
 
 
-void netdata_cleanup_and_exit(int ret) {
-    exit(ret);
-}
-
 // END NETDATA CODE
 // ----------------------------------------------------------------------------
 
@@ -1478,8 +1551,8 @@ int main (int argc, char **argv) {
     int i, freq = 0;
     for(i = 1; i < argc ; i++) {
         if(isdigit(*argv[i]) && !freq) {
-            int n = atoi(argv[i]);
-            if(n > 0 && freq < 86400) {
+            int n = str2i(argv[i]);
+            if(n > 0 && n < 86400) {
                 freq = n;
                 continue;
             }
@@ -1536,6 +1609,9 @@ int main (int argc, char **argv) {
                     "  ignore N1,N2,N3,...     sensor IDs to ignore\n"
                     "                          default: none\n"
                     "\n"
+                    "  ignore-status N1,N2,N3,... sensor IDs to ignore status (nominal/warning/critical)\n"
+                    "                          default: none\n"
+                    "\n"
                     "  -v\n"
                     "  -V\n"
                     "  version                 print version and exit\n"
@@ -1548,7 +1624,7 @@ int main (int argc, char **argv) {
                     " options ipmi_si kipmid_max_busy_us=10\n"
                     "\n"
                     " For more information:\n"
-                    " https://github.com/firehol/netdata/wiki/monitoring-IPMI\n"
+                    " https://github.com/ktsaou/netdata/tree/master/plugins/freeipmi.plugin\n"
                     "\n"
                     , VERSION
                     , netdata_update_every
@@ -1596,6 +1672,10 @@ int main (int argc, char **argv) {
             excluded_record_ids_parse(argv[++i]);
             continue;
         }
+        else if(i < argc && strcmp("ignore-status", argv[i]) == 0) {
+            excluded_status_record_ids_parse(argv[++i]);
+            continue;
+        }
 
         error("freeipmi.plugin: ignoring parameter '%s'", argv[i]);
     }
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new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/collectors/idlejitter.plugin/Makefile.am
@@ -0,0 +1,8 @@
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+
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+
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+	README.md \
+	$(NULL)
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new file mode 100644
index 000000000..973a3bef7
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+++ b/collectors/idlejitter.plugin/Makefile.in
@@ -0,0 +1,464 @@
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+	$(am__cd) $(top_srcdir) && \
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+	    || cp -p $$d/$$file "$(distdir)/$$file" \
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+	done
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+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
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+	fi
+mostlyclean-generic:
+
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+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
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+
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+	@echo "This command is intended for maintainers to use"
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diff --git a/collectors/idlejitter.plugin/README.md b/collectors/idlejitter.plugin/README.md
new file mode 100644
index 000000000..3c2080536
--- /dev/null
+++ b/collectors/idlejitter.plugin/README.md
@@ -0,0 +1,13 @@
+## idlejitter.plugin
+
+It works like this:
+
+A thread is spawn that requests to sleep for 20000 microseconds (20ms).
+When the system wakes it up, it measures how many microseconds have passed.
+The difference between the requested and the actual duration of the sleep, is the idle jitter.
+This is done at most 50 times per second, to ensure we have a good average. 
+
+This number is useful:
+ 
+ 1. in real-time environments, when the CPU jitter can affect the quality of the service (like VoIP media gateways).
+ 2. in cloud infrastructure, at can pause the VM or container for a small duration to perform operations at the host. 
diff --git a/src/plugin_idlejitter.c b/collectors/idlejitter.plugin/plugin_idlejitter.c
index 77bd95d55..3fe3b0306 100644
--- a/src/plugin_idlejitter.c
+++ b/collectors/idlejitter.plugin/plugin_idlejitter.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_idlejitter.h"
 
 #define CPU_IDLEJITTER_SLEEP_TIME_MS 20
 
@@ -28,9 +30,9 @@ void *cpuidlejitter_main(void *ptr) {
             , NULL
             , "CPU Idle Jitter"
             , "microseconds lost/s"
-            , "idlejitter"
+            , "idlejitter.plugin"
             , NULL
-            , 800
+            , NETDATA_CHART_PRIO_SYSTEM_IDLEJITTER
             , localhost->rrd_update_every
             , RRDSET_TYPE_AREA
     );
diff --git a/collectors/idlejitter.plugin/plugin_idlejitter.h b/collectors/idlejitter.plugin/plugin_idlejitter.h
new file mode 100644
index 000000000..62fabea16
--- /dev/null
+++ b/collectors/idlejitter.plugin/plugin_idlejitter.h
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_PLUGIN_IDLEJITTER_H
+#define NETDATA_PLUGIN_IDLEJITTER_H 1
+
+#include "../../daemon/common.h"
+
+#define NETDATA_PLUGIN_HOOK_IDLEJITTER \
+    { \
+        .name = "PLUGIN[idlejitter]", \
+        .config_section = CONFIG_SECTION_PLUGINS, \
+        .config_name = "idlejitter", \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = cpuidlejitter_main \
+    },
+
+extern void *cpuidlejitter_main(void *ptr);
+
+#endif /* NETDATA_PLUGIN_IDLEJITTER_H */
diff --git a/collectors/macos.plugin/Makefile.am b/collectors/macos.plugin/Makefile.am
new file mode 100644
index 000000000..babdcf0df
--- /dev/null
+++ b/collectors/macos.plugin/Makefile.am
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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diff --git a/collectors/macos.plugin/Makefile.in b/collectors/macos.plugin/Makefile.in
new file mode 100644
index 000000000..6247dda70
--- /dev/null
+++ b/collectors/macos.plugin/Makefile.in
@@ -0,0 +1,457 @@
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+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
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+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
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+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
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+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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+	    fi; \
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+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
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+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
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+	-rm -f Makefile
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+	-rm -f Makefile
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+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
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+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
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+
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/macos_fw.c b/collectors/macos.plugin/macos_fw.c
index 5e8ce0ee4..5d0ba929e 100644
--- a/src/macos_fw.c
+++ b/collectors/macos.plugin/macos_fw.c
@@ -1,4 +1,7 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_macos.h"
+
 #include <CoreFoundation/CoreFoundation.h>
 #include <IOKit/IOKitLib.h>
 #include <IOKit/storage/IOBlockStorageDriver.h>
diff --git a/src/macos_mach_smi.c b/collectors/macos.plugin/macos_mach_smi.c
index 47d32a9f7..1c43d624c 100644
--- a/src/macos_mach_smi.c
+++ b/collectors/macos.plugin/macos_mach_smi.c
@@ -1,4 +1,7 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_macos.h"
+
 #include <mach/mach.h>
 
 int do_macos_mach_smi(int update_every, usec_t dt) {
diff --git a/src/macos_sysctl.c b/collectors/macos.plugin/macos_sysctl.c
index cb6fa8af9..6b443c04a 100644
--- a/src/macos_sysctl.c
+++ b/collectors/macos.plugin/macos_sysctl.c
@@ -1,6 +1,8 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_macos.h"
+
 #include <Availability.h>
-#include <sys/sysctl.h>
 // NEEDED BY: do_bandwidth
 #include <net/route.h>
 // NEEDED BY do_tcp...
@@ -1488,17 +1490,3 @@ int do_macos_sysctl(int update_every, usec_t dt) {
     return 0;
 }
 
-int getsysctl_by_name(const char *name, void *ptr, size_t len)
-{
-    size_t nlen = len;
-
-    if (unlikely(sysctlbyname(name, ptr, &nlen, NULL, 0) == -1)) {
-        error("MACOS: sysctl(%s...) failed: %s", name, strerror(errno));
-        return 1;
-    }
-    if (unlikely(nlen != len)) {
-        error("MACOS: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
-        return 1;
-    }
-    return 0;
-}
diff --git a/src/plugin_macos.c b/collectors/macos.plugin/plugin_macos.c
index 6ac3d25d1..628a5b10d 100644
--- a/src/plugin_macos.c
+++ b/collectors/macos.plugin/plugin_macos.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_macos.h"
 
 static void macos_main_cleanup(void *ptr) {
     struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
diff --git a/collectors/macos.plugin/plugin_macos.h b/collectors/macos.plugin/plugin_macos.h
new file mode 100644
index 000000000..0815c59c3
--- /dev/null
+++ b/collectors/macos.plugin/plugin_macos.h
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+
+#ifndef NETDATA_PLUGIN_MACOS_H
+#define NETDATA_PLUGIN_MACOS_H 1
+
+#include "../../daemon/common.h"
+
+#if (TARGET_OS == OS_MACOS)
+
+#define NETDATA_PLUGIN_HOOK_MACOS \
+    { \
+        .name = "PLUGIN[macos]", \
+        .config_section = CONFIG_SECTION_PLUGINS, \
+        .config_name = "macos", \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = macos_main \
+    },
+
+void *macos_main(void *ptr);
+
+#define GETSYSCTL_BY_NAME(name, var) getsysctl_by_name(name, &(var), sizeof(var))
+
+extern int getsysctl_by_name(const char *name, void *ptr, size_t len);
+
+extern int do_macos_sysctl(int update_every, usec_t dt);
+extern int do_macos_mach_smi(int update_every, usec_t dt);
+extern int do_macos_iokit(int update_every, usec_t dt);
+
+
+#else // (TARGET_OS == OS_MACOS)
+
+#define NETDATA_PLUGIN_HOOK_MACOS
+
+#endif // (TARGET_OS == OS_MACOS)
+
+
+
+
+
+#endif /* NETDATA_PLUGIN_MACOS_H */
diff --git a/collectors/nfacct.plugin/Makefile.am b/collectors/nfacct.plugin/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/collectors/nfacct.plugin/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/collectors/nfacct.plugin/Makefile.in b/collectors/nfacct.plugin/Makefile.in
new file mode 100644
index 000000000..2a1d001de
--- /dev/null
+++ b/collectors/nfacct.plugin/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
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+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+dist_noinst_DATA = \
+	README.md \
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+
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+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/nfacct.plugin/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu collectors/nfacct.plugin/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/nfacct.plugin/README.md b/collectors/nfacct.plugin/README.md
new file mode 100644
index 000000000..814b47915
--- /dev/null
+++ b/collectors/nfacct.plugin/README.md
@@ -0,0 +1,10 @@
+# nfacct.plugin
+
+This plugin that collects NFACCT statistics.
+
+It is currently disabled by default, because it requires root access.
+We have to move the code to an external plugin to setuid just the plugin not the whole netdata server.
+
+You can build netdata with it to test it though.
+Just run `./configure` (or `netdata-installer.sh`) with the option `--enable-plugin-nfacct` (and any other options you may need).
+Remember, you have to tell netdata you want it to run as `root` for this plugin to work.
diff --git a/src/plugin_nfacct.c b/collectors/nfacct.plugin/plugin_nfacct.c
index 02815ef04..7d42dd189 100644
--- a/src/plugin_nfacct.c
+++ b/collectors/nfacct.plugin/plugin_nfacct.c
@@ -1,6 +1,10 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifdef INTERNAL_PLUGIN_NFACCT
+#include "plugin_nfacct.h"
+
+#if defined(INTERNAL_PLUGIN_NFACCT)
+
+#define PLUGIN_NFACCT_NAME "nfacct.plugin"
 
 #ifdef HAVE_LIBMNL
 #include <libmnl/libmnl.h>
@@ -19,7 +23,7 @@ static inline size_t mnl_buffer_size() {
 #define DO_NFSTAT 1
 
 #define RRD_TYPE_NET_STAT_NETFILTER "netfilter"
-#define RRD_TYPE_NET_STAT_CONNTRACK "netlink" // FIXME: should be "conntrack" when merged with the /proc plugin
+#define RRD_TYPE_NET_STAT_CONNTRACK "netlink"
 
 #include <linux/netfilter/nfnetlink_conntrack.h>
 
@@ -302,9 +306,9 @@ static void nfstat_send_metrics() {
                     , NULL
                     , "Connection Tracker New Connections"
                     , "connections/s"
-                    , "nfacct"
+                    , PLUGIN_NFACCT_NAME
                     , NULL
-                    , 3001
+                    , NETDATA_CHART_PRIO_NETFILTER_NEW
                     , nfstat_root.update_every
                     , RRDSET_TYPE_LINE
             );
@@ -338,9 +342,9 @@ static void nfstat_send_metrics() {
                     , NULL
                     , "Connection Tracker Changes"
                     , "changes/s"
-                    , "nfacct"
+                    , PLUGIN_NFACCT_NAME
                     , NULL
-                    , 3002
+                    , NETDATA_CHART_PRIO_NETFILTER_CHANGES
                     , nfstat_root.update_every
                     , RRDSET_TYPE_LINE
             );
@@ -375,9 +379,9 @@ static void nfstat_send_metrics() {
                     , NULL
                     , "Connection Tracker Searches"
                     , "searches/s"
-                    , "nfacct"
+                    , PLUGIN_NFACCT_NAME
                     , NULL
-                    , 3010
+                    , NETDATA_CHART_PRIO_NETFILTER_SEARCH
                     , nfstat_root.update_every
                     , RRDSET_TYPE_LINE
             );
@@ -412,9 +416,9 @@ static void nfstat_send_metrics() {
                     , NULL
                     , "Connection Tracker Errors"
                     , "events/s"
-                    , "nfacct"
+                    , PLUGIN_NFACCT_NAME
                     , NULL
-                    , 3005
+                    , NETDATA_CHART_PRIO_NETFILTER_ERRORS
                     , nfstat_root.update_every
                     , RRDSET_TYPE_LINE
             );
@@ -451,9 +455,9 @@ static void nfstat_send_metrics() {
                     , NULL
                     , "Connection Tracker Expectations"
                     , "expectations/s"
-                    , "nfacct"
+                    , PLUGIN_NFACCT_NAME
                     , NULL
-                    , 3003
+                    , NETDATA_CHART_PRIO_NETFILTER_EXPECT
                     , nfstat_root.update_every
                     , RRDSET_TYPE_LINE
             );
@@ -590,7 +594,7 @@ static void nfacct_cleanup() {
     nfacct_root.buf = NULL;
     nfacct_root.buf_size = 0;
 
-    // FIXME: cleanup the metrics linked list
+    // TODO: cleanup the metrics linked list
 }
 
 static int nfacct_callback(const struct nlmsghdr *nlh, void *data) {
@@ -671,9 +675,9 @@ static void nfacct_send_metrics() {
                 , NULL
                 , "Netfilter Accounting Packets"
                 , "packets/s"
-                , "nfacct"
+                , PLUGIN_NFACCT_NAME
                 , NULL
-                , 3206
+                , NETDATA_CHART_PRIO_NETFILTER_PACKETS
                 , nfacct_root.update_every
                 , RRDSET_TYPE_STACKED
         );
@@ -714,9 +718,9 @@ static void nfacct_send_metrics() {
                 , NULL
                 , "Netfilter Accounting Bandwidth"
                 , "kilobytes/s"
-                , "nfacct"
+                , PLUGIN_NFACCT_NAME
                 , NULL
-                , 3207
+                , NETDATA_CHART_PRIO_NETFILTER_BYTES
                 , nfacct_root.update_every
                 , RRDSET_TYPE_STACKED
         );
@@ -788,7 +792,6 @@ void *nfacct_main(void *ptr) {
     heartbeat_t hb;
     heartbeat_init(&hb);
     for(;;) {
-        heartbeat_dt_usec(&hb);
         heartbeat_next(&hb, step);
 
         if(unlikely(netdata_exit)) break;
diff --git a/collectors/nfacct.plugin/plugin_nfacct.h b/collectors/nfacct.plugin/plugin_nfacct.h
new file mode 100644
index 000000000..4311ccecf
--- /dev/null
+++ b/collectors/nfacct.plugin/plugin_nfacct.h
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_NFACCT_H
+#define NETDATA_NFACCT_H 1
+
+#include "../../daemon/common.h"
+
+#if defined(INTERNAL_PLUGIN_NFACCT)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_NFACCT \
+    { \
+        .name = "PLUGIN[nfacct]", \
+        .config_section = CONFIG_SECTION_PLUGINS, \
+        .config_name = "nfacct", \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = nfacct_main \
+    },
+
+extern void *nfacct_main(void *ptr);
+
+#else // !defined(INTERNAL_PLUGIN_NFACCT)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_NFACCT
+
+#endif // defined(INTERNAL_PLUGIN_NFACCT)
+
+#endif /* NETDATA_NFACCT_H */
+
diff --git a/collectors/node.d.plugin/Makefile.am b/collectors/node.d.plugin/Makefile.am
new file mode 100644
index 000000000..4de13cf76
--- /dev/null
+++ b/collectors/node.d.plugin/Makefile.am
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+CLEANFILES = \
+	node.d.plugin \
+	$(NULL)
+
+include $(top_srcdir)/build/subst.inc
+SUFFIXES = .in
+
+dist_libconfig_DATA = \
+    node.d.conf \
+    $(NULL)
+
+dist_plugins_SCRIPTS = \
+	node.d.plugin \
+	$(NULL)
+
+dist_noinst_DATA = \
+	node.d.plugin.in \
+	README.md \
+	$(NULL)
+
+usernodeconfigdir=$(configdir)/node.d
+dist_usernodeconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+nodeconfigdir=$(libconfigdir)/node.d
+dist_nodeconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+dist_node_DATA = \
+	$(NULL)
+
+include fronius/Makefile.inc
+include named/Makefile.inc
+include sma_webbox/Makefile.inc
+include snmp/Makefile.inc
+include stiebeleltron/Makefile.inc
+
+nodemodulesdir=$(nodedir)/node_modules
+dist_nodemodules_DATA = \
+	node_modules/netdata.js \
+	node_modules/extend.js \
+	node_modules/pixl-xml.js \
+	node_modules/net-snmp.js \
+	node_modules/asn1-ber.js \
+	$(NULL)
+
+nodemoduleslibberdir=$(nodedir)/node_modules/lib/ber
+dist_nodemoduleslibber_DATA = \
+	node_modules/lib/ber/index.js \
+	node_modules/lib/ber/errors.js \
+	node_modules/lib/ber/reader.js \
+	node_modules/lib/ber/types.js \
+	node_modules/lib/ber/writer.js \
+	$(NULL)
diff --git a/collectors/node.d.plugin/Makefile.in b/collectors/node.d.plugin/Makefile.in
new file mode 100644
index 000000000..4aec01dea
--- /dev/null
+++ b/collectors/node.d.plugin/Makefile.in
@@ -0,0 +1,805 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
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+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+	$(srcdir)/Makefile.am $(dist_plugins_SCRIPTS) \
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+	"$(DESTDIR)$(usernodeconfigdir)"
+SCRIPTS = $(dist_plugins_SCRIPTS)
+AM_V_P = $(am__v_P_@AM_V@)
+am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
+am__v_P_0 = false
+am__v_P_1 = :
+AM_V_GEN = $(am__v_GEN_@AM_V@)
+am__v_GEN_ = $(am__v_GEN_@AM_DEFAULT_V@)
+am__v_GEN_0 = @echo "  GEN     " $@;
+am__v_GEN_1 = 
+AM_V_at = $(am__v_at_@AM_V@)
+am__v_at_ = $(am__v_at_@AM_DEFAULT_V@)
+am__v_at_0 = @
+am__v_at_1 = 
+SOURCES =
+DIST_SOURCES =
+am__can_run_installinfo = \
+  case $$AM_UPDATE_INFO_DIR in \
+    n|no|NO) false;; \
+    *) (install-info --version) >/dev/null 2>&1;; \
+  esac
+DATA = $(dist_libconfig_DATA) $(dist_node_DATA) \
+	$(dist_nodeconfig_DATA) $(dist_nodemodules_DATA) \
+	$(dist_nodemoduleslibber_DATA) $(dist_noinst_DATA) \
+	$(dist_usernodeconfig_DATA)
+am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
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+AMTAR = @AMTAR@
+AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+CC = @CC@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @CFLAGS@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CYGPATH_W = @CYGPATH_W@
+DEFS = @DEFS@
+DEPDIR = @DEPDIR@
+ECHO_C = @ECHO_C@
+ECHO_N = @ECHO_N@
+ECHO_T = @ECHO_T@
+EGREP = @EGREP@
+EXEEXT = @EXEEXT@
+GREP = @GREP@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+IPMIMONITORING_CFLAGS = @IPMIMONITORING_CFLAGS@
+IPMIMONITORING_LIBS = @IPMIMONITORING_LIBS@
+LDFLAGS = @LDFLAGS@
+LIBCAP_CFLAGS = @LIBCAP_CFLAGS@
+LIBCAP_LIBS = @LIBCAP_LIBS@
+LIBMNL_CFLAGS = @LIBMNL_CFLAGS@
+LIBMNL_LIBS = @LIBMNL_LIBS@
+LIBOBJS = @LIBOBJS@
+LIBS = @LIBS@
+LTLIBOBJS = @LTLIBOBJS@
+MAINT = @MAINT@
+MAKEINFO = @MAKEINFO@
+MATH_CFLAGS = @MATH_CFLAGS@
+MATH_LIBS = @MATH_LIBS@
+MKDIR_P = @MKDIR_P@
+NFACCT_CFLAGS = @NFACCT_CFLAGS@
+NFACCT_LIBS = @NFACCT_LIBS@
+OBJEXT = @OBJEXT@
+OPTIONAL_IPMIMONITORING_CFLAGS = @OPTIONAL_IPMIMONITORING_CFLAGS@
+OPTIONAL_IPMIMONITORING_LIBS = @OPTIONAL_IPMIMONITORING_LIBS@
+OPTIONAL_LIBCAP_CFLAGS = @OPTIONAL_LIBCAP_CFLAGS@
+OPTIONAL_LIBCAP_LIBS = @OPTIONAL_LIBCAP_LIBS@
+OPTIONAL_MATH_CLFAGS = @OPTIONAL_MATH_CLFAGS@
+OPTIONAL_MATH_LIBS = @OPTIONAL_MATH_LIBS@
+OPTIONAL_NFACCT_CLFAGS = @OPTIONAL_NFACCT_CLFAGS@
+OPTIONAL_NFACCT_LIBS = @OPTIONAL_NFACCT_LIBS@
+OPTIONAL_UUID_CLFAGS = @OPTIONAL_UUID_CLFAGS@
+OPTIONAL_UUID_LIBS = @OPTIONAL_UUID_LIBS@
+OPTIONAL_ZLIB_CLFAGS = @OPTIONAL_ZLIB_CLFAGS@
+OPTIONAL_ZLIB_LIBS = @OPTIONAL_ZLIB_LIBS@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_RPM_RELEASE = @PACKAGE_RPM_RELEASE@
+PACKAGE_RPM_VERSION = @PACKAGE_RPM_VERSION@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PTHREAD_CC = @PTHREAD_CC@
+PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
+PTHREAD_LIBS = @PTHREAD_LIBS@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SSE_CANDIDATE = @SSE_CANDIDATE@
+STRIP = @STRIP@
+UUID_CFLAGS = @UUID_CFLAGS@
+UUID_LIBS = @UUID_LIBS@
+VERSION = @VERSION@
+ZLIB_CFLAGS = @ZLIB_CFLAGS@
+ZLIB_LIBS = @ZLIB_LIBS@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_CC = @ac_ct_CC@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+ax_pthread_config = @ax_pthread_config@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_target = @build_target@
+build_vendor = @build_vendor@
+builddir = @builddir@
+cachedir = @cachedir@
+chartsdir = @chartsdir@
+configdir = @configdir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+has_jemalloc = @has_jemalloc@
+has_tcmalloc = @has_tcmalloc@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libconfigdir = @libconfigdir@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+logdir = @logdir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+nodedir = @nodedir@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+pluginsdir = @pluginsdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+pythondir = @pythondir@
+registrydir = @registrydir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+varlibdir = @varlibdir@
+webdir = @webdir@
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+CLEANFILES = \
+	node.d.plugin \
+	$(NULL)
+
+SUFFIXES = .in
+dist_libconfig_DATA = \
+    node.d.conf \
+    $(NULL)
+
+dist_plugins_SCRIPTS = \
+	node.d.plugin \
+	$(NULL)
+
+# dist_nodeconfig_DATA += fronius/fronius.conf
+
+# do not install these files, but include them in the distribution
+# dist_nodeconfig_DATA += named/named.conf
+
+# do not install these files, but include them in the distribution
+# dist_nodeconfig_DATA += sma_webbox/sma_webbox.conf
+
+# do not install these files, but include them in the distribution
+# dist_nodeconfig_DATA += snmp/snmp.conf
+
+# do not install these files, but include them in the distribution
+# dist_nodeconfig_DATA += stiebeleltron/stiebeleltron.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA = node.d.plugin.in README.md $(NULL) \
+	fronius/README.md fronius/Makefile.inc named/README.md \
+	named/Makefile.inc sma_webbox/README.md \
+	sma_webbox/Makefile.inc snmp/README.md snmp/Makefile.inc \
+	stiebeleltron/README.md stiebeleltron/Makefile.inc
+usernodeconfigdir = $(configdir)/node.d
+dist_usernodeconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+nodeconfigdir = $(libconfigdir)/node.d
+dist_nodeconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+dist_node_DATA = $(NULL) fronius/fronius.node.js named/named.node.js \
+	sma_webbox/sma_webbox.node.js snmp/snmp.node.js \
+	stiebeleltron/stiebeleltron.node.js
+nodemodulesdir = $(nodedir)/node_modules
+dist_nodemodules_DATA = \
+	node_modules/netdata.js \
+	node_modules/extend.js \
+	node_modules/pixl-xml.js \
+	node_modules/net-snmp.js \
+	node_modules/asn1-ber.js \
+	$(NULL)
+
+nodemoduleslibberdir = $(nodedir)/node_modules/lib/ber
+dist_nodemoduleslibber_DATA = \
+	node_modules/lib/ber/index.js \
+	node_modules/lib/ber/errors.js \
+	node_modules/lib/ber/reader.js \
+	node_modules/lib/ber/types.js \
+	node_modules/lib/ber/writer.js \
+	$(NULL)
+
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .in
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/build/subst.inc $(srcdir)/fronius/Makefile.inc $(srcdir)/named/Makefile.inc $(srcdir)/sma_webbox/Makefile.inc $(srcdir)/snmp/Makefile.inc $(srcdir)/stiebeleltron/Makefile.inc $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/node.d.plugin/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu collectors/node.d.plugin/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+$(top_srcdir)/build/subst.inc $(srcdir)/fronius/Makefile.inc $(srcdir)/named/Makefile.inc $(srcdir)/sma_webbox/Makefile.inc $(srcdir)/snmp/Makefile.inc $(srcdir)/stiebeleltron/Makefile.inc:
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+install-dist_pluginsSCRIPTS: $(dist_plugins_SCRIPTS)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pluginsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pluginsdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) { files[d] = files[d] " " $$1; \
+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(pluginsdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(pluginsdir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-dist_pluginsSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || exit 0; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	       sed -e 's,.*/,,;$(transform)'`; \
+	dir='$(DESTDIR)$(pluginsdir)'; $(am__uninstall_files_from_dir)
+install-dist_libconfigDATA: $(dist_libconfig_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(libconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(libconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_libconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(libconfigdir)'; $(am__uninstall_files_from_dir)
+install-dist_nodeDATA: $(dist_node_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_node_DATA)'; test -n "$(nodedir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(nodedir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(nodedir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(nodedir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(nodedir)" || exit $$?; \
+	done
+
+uninstall-dist_nodeDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_node_DATA)'; test -n "$(nodedir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(nodedir)'; $(am__uninstall_files_from_dir)
+install-dist_nodeconfigDATA: $(dist_nodeconfig_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_nodeconfig_DATA)'; test -n "$(nodeconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(nodeconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(nodeconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(nodeconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(nodeconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_nodeconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_nodeconfig_DATA)'; test -n "$(nodeconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(nodeconfigdir)'; $(am__uninstall_files_from_dir)
+install-dist_nodemodulesDATA: $(dist_nodemodules_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_nodemodules_DATA)'; test -n "$(nodemodulesdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(nodemodulesdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(nodemodulesdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(nodemodulesdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(nodemodulesdir)" || exit $$?; \
+	done
+
+uninstall-dist_nodemodulesDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_nodemodules_DATA)'; test -n "$(nodemodulesdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(nodemodulesdir)'; $(am__uninstall_files_from_dir)
+install-dist_nodemoduleslibberDATA: $(dist_nodemoduleslibber_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_nodemoduleslibber_DATA)'; test -n "$(nodemoduleslibberdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(nodemoduleslibberdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(nodemoduleslibberdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(nodemoduleslibberdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(nodemoduleslibberdir)" || exit $$?; \
+	done
+
+uninstall-dist_nodemoduleslibberDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_nodemoduleslibber_DATA)'; test -n "$(nodemoduleslibberdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(nodemoduleslibberdir)'; $(am__uninstall_files_from_dir)
+install-dist_usernodeconfigDATA: $(dist_usernodeconfig_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_usernodeconfig_DATA)'; test -n "$(usernodeconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(usernodeconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(usernodeconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(usernodeconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(usernodeconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_usernodeconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_usernodeconfig_DATA)'; test -n "$(usernodeconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(usernodeconfigdir)'; $(am__uninstall_files_from_dir)
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(SCRIPTS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(libconfigdir)" "$(DESTDIR)$(nodedir)" "$(DESTDIR)$(nodeconfigdir)" "$(DESTDIR)$(nodemodulesdir)" "$(DESTDIR)$(nodemoduleslibberdir)" "$(DESTDIR)$(usernodeconfigdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-dist_libconfigDATA install-dist_nodeDATA \
+	install-dist_nodeconfigDATA install-dist_nodemodulesDATA \
+	install-dist_nodemoduleslibberDATA install-dist_pluginsSCRIPTS \
+	install-dist_usernodeconfigDATA
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-dist_libconfigDATA uninstall-dist_nodeDATA \
+	uninstall-dist_nodeconfigDATA uninstall-dist_nodemodulesDATA \
+	uninstall-dist_nodemoduleslibberDATA \
+	uninstall-dist_pluginsSCRIPTS \
+	uninstall-dist_usernodeconfigDATA
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dist_libconfigDATA \
+	install-dist_nodeDATA install-dist_nodeconfigDATA \
+	install-dist_nodemodulesDATA \
+	install-dist_nodemoduleslibberDATA install-dist_pluginsSCRIPTS \
+	install-dist_usernodeconfigDATA install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am \
+	uninstall-dist_libconfigDATA uninstall-dist_nodeDATA \
+	uninstall-dist_nodeconfigDATA uninstall-dist_nodemodulesDATA \
+	uninstall-dist_nodemoduleslibberDATA \
+	uninstall-dist_pluginsSCRIPTS \
+	uninstall-dist_usernodeconfigDATA
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
+		-e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
+		-e 's#[@]pythondir_POST@#$(pythondir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
+		$< > $@.tmp; then \
+		mv "$@.tmp" "$@"; \
+	else \
+		rm -f "$@.tmp"; \
+		false; \
+	fi
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/node.d.plugin/README.md b/collectors/node.d.plugin/README.md
new file mode 100644
index 000000000..dd977017d
--- /dev/null
+++ b/collectors/node.d.plugin/README.md
@@ -0,0 +1,218 @@
+# node.d.plugin
+
+`node.d.plugin` is a netdata external plugin. It is an **orchestrator** for data collection modules written in `node.js`.
+
+1. It runs as an independent process `ps fax` shows it
+2. It is started and stopped automatically by netdata
+3. It communicates with netdata via a unidirectional pipe (sending data to the netdata daemon)
+4. Supports any number of data collection **modules**
+5. Allows each **module** to have one or more data collection **jobs**
+6. Each **job** is collecting one or more metrics from a single data source
+
+# Motivation
+
+Node.js is perfect for asynchronous operations. It is very fast and quite common (actually the whole web is based on it).
+Since data collection is not a CPU intensive task, node.js is an ideal solution for it.
+
+`node.d.plugin` is a netdata plugin that provides an abstraction layer to allow easy and quick development of data
+collectors in node.js. It also manages all its data collectors (placed in `/usr/libexec/netdata/node.d`) using a single
+instance of node, thus lowering the memory footprint of data collection.
+
+Of course, there can be independent plugins written in node.js (placed in `/usr/libexec/netdata/plugins`).
+These will have to be developed using the guidelines of **[External Plugins](../plugins.d/)**.
+
+To run `node.js` plugins you need to have `node` installed in your system.
+
+In some older systems, the package named `node` is not node.js. It is a terminal emulation program called `ax25-node`.
+In this case the node.js package may be referred as `nodejs`. Once you install `nodejs`, we suggest to link
+`/usr/bin/nodejs` to `/usr/bin/node`, so that typing `node` in your terminal, opens node.js.
+For more information check the **[[Installation]]** guide.
+
+## configuring `node.d.plugin`
+
+`node.d.plugin` can work even without any configuration. Its default configuration file is
+[/etc/netdata/node.d.conf](node.d.conf) (to edit it on your system run `/etc/netdata/edit-config node.d.conf`).
+
+## configuring `node.d.plugin` modules
+
+`node.d.plugin` modules accept configuration in `JSON` format.
+
+Unfortunately, `JSON` files do not accept comments. So, the best way to describe them is to have markdown text files
+with instructions.
+
+`JSON` has a very strict formatting. If you get errors from netdata at `/var/log/netdata/error.log` that a certain
+configuration file cannot be loaded, we suggest to verify it at [http://jsonlint.com/](http://jsonlint.com/).
+
+The files in this directory, provide usable examples for configuring each `node.d.plugin` module.
+
+
+## debugging modules written for node.d.plugin
+
+To test `node.d.plugin` modules, which are placed in `/usr/libexec/netdata/node.d`, you can run `node.d.plugin` by hand,
+like this:
+
+```sh
+# become user netdata
+sudo su -s /bin/sh netdata
+
+# run the plugin in debug mode
+/usr/libexec/netdata/plugins.d/node.d.plugin debug 1 X Y Z
+```
+
+`node.d.plugin` will run in `debug` mode (lots of debug info), with an update frequency of `1` second, evaluating only
+the collector scripts `X` (i.e. `/usr/libexec/netdata/node.d/X.node.js`), `Y` and `Z`.
+You can define zero or more modules. If none is defined, `node.d.plugin` will evaluate all modules available.
+
+Keep in mind that if your configs are not in `/etc/netdata`, you should do the following before running `node.d.plugin`:
+
+```sh
+export NETDATA_USER_CONFIG_DIR="/path/to/etc/netdata"
+```
+
+---
+
+## developing `node.d.plugin` modules
+
+Your data collection module should be split in 3 parts:
+
+   - a function to fetch the data from its source. `node.d.plugin` already can fetch data from web sources,
+      so you don't need to do anything about it for http.
+
+   - a function to process the fetched/manipulate the data fetched. This function will make a number of calls
+      to create charts and dimensions and pass the collected values to netdata.
+      This is the only function you need to write for collecting http JSON data.
+
+   - a `configure` and an `update` function, which take care of your module configuration and data refresh
+      respectively. You can use the supplied ones.
+
+Your module will automatically be able to process any number of servers, with different settings (even different
+data collection frequencies). You will write just the work needed for one and `node.d.plugin` will do the rest.
+For each server you are going to fetch data from, you will have to create a `service` (more later).
+
+### writing the data collection module
+
+To provide a module called `mymodule`, you have create the file `/usr/libexec/netdata/node.d/mymodule.node.js`, with this structure:
+
+```js
+
+// the processor is needed only
+// if you need a custom processor
+// other than http
+netdata.processors.myprocessor = {
+	name: 'myprocessor',
+
+	process: function(service, callback) {
+
+		/* do data collection here */
+
+		callback(data);
+	}
+};
+
+// this is the mymodule definition
+var mymodule = {
+	processResponse: function(service, data) {
+
+		/* send information to the netdata server here */
+
+	},
+
+	configure: function(config) {
+		var eligible_services = 0;
+
+		if(typeof(config.servers) === 'undefined' || config.servers.length === 0) {
+
+			/*
+			 * create a service using internal defaults;
+			 * this is used for auto-detecting the settings
+			 * if possible
+			 */
+
+			netdata.service({
+				name: 'a name for this service',
+				update_every: this.update_every,
+				module: this,
+				processor: netdata.processors.myprocessor,
+				// any other information your processor needs
+			}).execute(this.processResponse);
+
+			eligible_services++;
+		}
+		else {
+
+			/*
+			 * create a service for each server in the
+			 * configuration file
+			 */
+
+			var len = config.servers.length;
+			while(len--) {
+				var server = config.servers[len];
+
+				netdata.service({
+					name: server.name,
+					update_every: server.update_every,
+					module: this,
+					processor: netdata.processors.myprocessor,
+					// any other information your processor needs
+				}).execute(this.processResponse);
+
+				eligible_services++;
+			}
+		}
+
+		return eligible_services;
+	},
+
+	update: function(service, callback) {
+		
+		/*
+		 * this function is called when each service
+		 * created by the configure function, needs to
+		 * collect updated values.
+		 *
+		 * You normally will not need to change it.
+		 */
+
+		service.execute(function(service, data) {
+			mymodule.processResponse(service, data);
+			callback();
+		});
+	},
+};
+
+module.exports = mymodule;
+```
+
+#### configure(config)
+
+`configure(config)` is called just once, when `node.d.plugin` starts.
+The config file will contain the contents of `/etc/netdata/node.d/mymodule.conf`.
+This file should have the following format:
+
+```js
+{
+	"enable_autodetect": false,
+	"update_every": 5,
+	"servers": [ { /* server 1 */ }, { /* server 2 */ } ]
+}
+```
+
+If the config file `/etc/netdata/node.d/mymodule.conf` does not give a `enable_autodetect` or `update_every`, these
+will be added by `node.d.plugin`. So you module will always have them.
+
+The configuration file `/etc/netdata/node.d/mymodule.conf` may contain whatever else is needed for `mymodule`.
+
+#### processResponse(data)
+
+`data` may be `null` or whatever the processor specified in the `service` returned.
+
+The `service` object defines a set of functions to allow you send information to the netdata core about:
+
+1. Charts and dimension definitions
+2. Updated values, from the collected values
+
+---
+
+*FIXME: document an operational node.d.plugin data collector - the best example is the
+[snmp collector](snmp/snmp.node.js)*
diff --git a/collectors/node.d.plugin/fronius/Makefile.inc b/collectors/node.d.plugin/fronius/Makefile.inc
new file mode 100644
index 000000000..da0743a88
--- /dev/null
+++ b/collectors/node.d.plugin/fronius/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_node_DATA       += fronius/fronius.node.js
+# dist_nodeconfig_DATA += fronius/fronius.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += fronius/README.md fronius/Makefile.inc
+
diff --git a/conf.d/node.d/fronius.conf.md b/collectors/node.d.plugin/fronius/README.md
index 622086b27..dd2846990 100644
--- a/conf.d/node.d/fronius.conf.md
+++ b/collectors/node.d.plugin/fronius/README.md
@@ -1,3 +1,56 @@
+# fronius
+
+This module collects metrics from the configured solar power installation from Fronius Symo.
+
+**Requirements**
+ * Configuration file `fronius.conf` in the node.d netdata config dir (default: `/etc/netdata/node.d/fronius.conf`)
+ * Fronius Symo with network access (http)
+
+It produces per server:
+
+1. **Power**
+ * Current power input from the grid (positive values), output to the grid (negative values), in W
+ * Current power input from the solar panels, in W
+ * Current power stored in the accumulator (if present), in W (in theory, untested)
+
+2. **Consumption**
+ * Local consumption in W
+
+3. **Autonomy**
+ * Relative autonomy in %. 100 % autonomy means that the solar panels are delivering more power than it is needed by local consumption.
+ * Relative self consumption in %. The lower the better
+
+4. **Energy**
+ * The energy produced during the current day, in kWh
+ * The energy produced during the current year, in kWh
+
+5. **Inverter**
+ * The current power output from the connected inverters, in W, one dimension per inverter. At least one is always present.
+ 
+ 
+### configuration
+
+Sample:
+
+```json
+{
+    "enable_autodetect": false,
+    "update_every": 5,
+    "servers": [
+        {
+            "name": "Symo",
+            "hostname": "symo.ip.or.dns",
+            "update_every": 5,
+            "api_path": "/solar_api/v1/GetPowerFlowRealtimeData.fcgi"
+        }
+    ]
+}
+```
+
+If no configuration is given, the module will be disabled. Each `update_every` is optional, the default is `5`.
+
+---
+
 [Fronius Symo 8.2](https://www.fronius.com/en/photovoltaics/products/all-products/inverters/fronius-symo/fronius-symo-8-2-3-m)
 
 The plugin has been tested with a single inverter, namely Fronius Symo 8.2-3-M:
diff --git a/node.d/fronius.node.js b/collectors/node.d.plugin/fronius/fronius.node.js
index fc49e5d38..436f3a325 100644
--- a/node.d/fronius.node.js
+++ b/collectors/node.d.plugin/fronius/fronius.node.js
@@ -1,12 +1,13 @@
 "use strict";
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 // This program will connect to one or more Fronius Symo Inverters.
 // to get the Solar Power Generated (current, today).
 
 // example configuration in netdata/conf.d/node.d/fronius.conf.md
 
-var url = require("url");
-var http = require("http");
+require("url");
+require("http");
 var netdata = require("netdata");
 
 netdata.debug("loaded " + __filename + " plugin");
diff --git a/collectors/node.d.plugin/named/Makefile.inc b/collectors/node.d.plugin/named/Makefile.inc
new file mode 100644
index 000000000..95f423012
--- /dev/null
+++ b/collectors/node.d.plugin/named/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_node_DATA       += named/named.node.js
+# dist_nodeconfig_DATA += named/named.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += named/README.md named/Makefile.inc
+
diff --git a/conf.d/node.d/named.conf.md b/collectors/node.d.plugin/named/README.md
index fa843dd58..977a5015f 100644
--- a/conf.d/node.d/named.conf.md
+++ b/collectors/node.d.plugin/named/README.md
@@ -2,8 +2,6 @@
 

 Using this netdata collector, you can monitor one or more ISC Bind servers.

 

-The source code for this plugin in [here](https://github.com/firehol/netdata/blob/master/node.d/named.node.js).

-

 ## Example netdata charts

 

 Depending on the number of views your bind has, you may get a large number of charts.

diff --git a/node.d/named.node.js b/collectors/node.d.plugin/named/named.node.js
index 02c890c60..d13c608cb 100644
--- a/node.d/named.node.js
+++ b/collectors/node.d.plugin/named/named.node.js
@@ -1,4 +1,5 @@
 'use strict';
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 // collect statistics from bind (named) v9.10+
 //
@@ -36,8 +37,8 @@ statistics-channels {
 };
 */
 
-var url = require('url');
-var http = require('http');
+require('url');
+require('http');
 var XML = require('pixl-xml');
 var netdata = require('netdata');
 
@@ -79,11 +80,11 @@ var named = {
                     multiplier: multiplier, // the multiplier
                     divisor: divisor,       // the divisor
                     hidden: false           // is hidden (boolean)
-                }
+                };
             }
         }
 
-        if(found === false)
+        if(!found)
             return null;
 
         chart = service.chart(id, chart);
diff --git a/conf.d/node.d.conf b/collectors/node.d.plugin/node.d.conf
index 95aec99ce..95aec99ce 100644
--- a/conf.d/node.d.conf
+++ b/collectors/node.d.plugin/node.d.conf
diff --git a/plugins.d/node.d.plugin b/collectors/node.d.plugin/node.d.plugin
index b16203912..2570220c2 100755..100644
--- a/plugins.d/node.d.plugin
+++ b/collectors/node.d.plugin/node.d.plugin
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-':' //; exec "$(command -v nodejs || command -v node || command -v js || echo "ERROR node.js IS NOT AVAILABLE IN THIS SYSTEM")" "$0" "$@"
+':' //; exec "$(command -v nodejs || command -v node || echo "ERROR node IS NOT AVAILABLE IN THIS SYSTEM")" "$0" "$@"
 
 // shebang hack from:
 // http://unix.stackexchange.com/questions/65235/universal-node-js-shebang
@@ -11,7 +11,7 @@
 // netdata
 // real-time performance and health monitoring, done right!
 // (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
-// GPL v3+
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 // --------------------------------------------------------------------------------------------------------------------
 
@@ -21,7 +21,8 @@
 // get NETDATA environment variables
 
 var NETDATA_PLUGINS_DIR = process.env.NETDATA_PLUGINS_DIR || __dirname;
-var NETDATA_CONFIG_DIR = process.env.NETDATA_CONFIG_DIR || __dirname + '/../../../../etc/netdata';
+var NETDATA_USER_CONFIG_DIR = process.env.NETDATA_USER_CONFIG_DIR || '/usr/local/etc/netdata';
+var NETDATA_STOCK_CONFIG_DIR = process.env.NETDATA_STOCK_CONFIG_DIR || '/usr/local/lib/netdata/conf.d';
 var NETDATA_UPDATE_EVERY = process.env.NETDATA_UPDATE_EVERY || 1;
 var NODE_D_DIR = NETDATA_PLUGINS_DIR + '/../node.d';
 
@@ -45,20 +46,42 @@ var netdata = require('netdata');
 // --------------------------------------------------------------------------------------------------------------------
 // configuration
 
-function pluginConfig(filename) {
-    var f = path.basename(filename);
+function netdata_read_json_config_file(module_filename) {
+    var f = path.basename(module_filename);
+
+    var ufilename, sfilename;
 
-    // node.d.plugin configuration
     var m = f.match('.plugin' + '$');
-    if(m !== null)
-        return netdata.options.paths.config + '/' + f.substring(0, m.index) + '.conf';
+    if(m !== null) {
+        ufilename = netdata.options.paths.config + '/' + f.substring(0, m.index) + '.conf';
+        sfilename = netdata.options.paths.stock_config + '/' + f.substring(0, m.index) + '.conf';
+    }
 
-    // node.d modules configuration
     m = f.match('.node.js' + '$');
-    if(m !== null)
-        return netdata.options.paths.config + '/node.d/' + f.substring(0, m.index) + '.conf';
+    if(m !== null) {
+        ufilename = netdata.options.paths.config + '/node.d/' + f.substring(0, m.index) + '.conf';
+        sfilename = netdata.options.paths.stock_config + '/node.d/' + f.substring(0, m.index) + '.conf';
+    }
+
+    try {
+        netdata.debug('loading module\'s ' + module_filename + ' user-config ' + ufilename);
+        return JSON.parse(fs.readFileSync(ufilename, 'utf8'));
+    }
+    catch(e) {
+        netdata.error('Cannot read user-configuration file ' + ufilename + ': ' + e.message + '.');
+        dumpError(e);
+    }
 
-    return netdata.options.paths.config + '/node.d/' + f + '.conf';
+    try {
+        netdata.debug('loading module\'s ' + module_filename + ' stock-config ' + sfilename);
+        return JSON.parse(fs.readFileSync(sfilename, 'utf8'));
+    }
+    catch(e) {
+        netdata.error('Cannot read stock-configuration file ' + sfilename + ': ' + e.message + ', using internal defaults.');
+        dumpError(e);
+    }
+
+    return {};
 }
 
 // internal defaults
@@ -69,35 +92,31 @@ extend(true, netdata.options, {
 
     paths: {
         plugins: NETDATA_PLUGINS_DIR,
-        config: NETDATA_CONFIG_DIR,
-        modules: [],
+        config: NETDATA_USER_CONFIG_DIR,
+        stock_config: NETDATA_STOCK_CONFIG_DIR,
+        modules: []
     },
 
     modules_enable_autodetect: true,
     modules_enable_all: true,
-    modules: {},
+    modules: {}
 });
-netdata.options.config_filename = pluginConfig(__filename);
 
 // load configuration file
-try {
-    netdata.options_loaded = JSON.parse(fs.readFileSync(netdata.options.config_filename, 'utf8'));
-    extend(true, netdata.options, netdata.options_loaded);
+netdata.options_loaded = netdata_read_json_config_file(__filename);
+extend(true, netdata.options, netdata.options_loaded);
 
-    if(!netdata.options.paths.plugins)
-        netdata.options.paths.plugins = NETDATA_PLUGINS_DIR;
+if(!netdata.options.paths.plugins)
+    netdata.options.paths.plugins = NETDATA_PLUGINS_DIR;
 
-    if(!netdata.options.paths.config)
-        netdata.options.paths.config = NETDATA_CONFIG_DIR;
+if(!netdata.options.paths.config)
+    netdata.options.paths.config = NETDATA_USER_CONFIG_DIR;
 
-    // console.error('merged netdata object:');
-    // console.error(util.inspect(netdata, {depth: 10}));
-}
-catch(e) {
-    netdata.error('Cannot read configuration file ' + netdata.options.config_filename + ': ' + e.message + ', using internal defaults.');
-    netdata.options_loaded = undefined;
-    dumpError(e);
-}
+if(!netdata.options.paths.stock_config)
+    netdata.options.paths.stock_config = NETDATA_STOCK_CONFIG_DIR;
+
+// console.error('merged netdata object:');
+// console.error(util.inspect(netdata, {depth: 10}));
 
 
 // apply module paths to node.js process
@@ -206,9 +225,6 @@ function findModules() {
                 netdata.options.modules[n].filename = NODE_D_DIR + '/' + files[len];
                 netdata.options.modules[n].loaded = false;
 
-                if(typeof(netdata.options.modules[n].config_filename) !== 'string')
-                    netdata.options.modules[n].config_filename = pluginConfig(files[len]);
-
                 // load the module
                 try {
                     netdata.debug('loading module ' + netdata.options.modules[n].filename);
@@ -228,16 +244,9 @@ function findModules() {
                     enable_autodetect: netdata.options.modules_enable_autodetect,
                     update_every: netdata.options.update_every
                 };
-                try {
-                    netdata.debug('loading module\'s ' + netdata.options.modules[n].name + ' config ' + netdata.options.modules[n].config_filename);
-                    var c2 = JSON.parse(fs.readFileSync(netdata.options.modules[n].config_filename, 'utf8'));
-                    extend(true, c, c2);
-                    netdata.debug('loaded module\'s ' + netdata.options.modules[n].name + ' config ' + netdata.options.modules[n].config_filename);
-                }
-                catch(e) {
-                    netdata.error('Cannot load module\'s ' + netdata.options.modules[n].name + ' config from ' + netdata.options.modules[n].config_filename + ' exception: ' + e + ', using internal defaults.');
-                    dumpError(e);
-                }
+
+                var c2 = netdata_read_json_config_file(files[len]);
+                extend(true, c, c2);
 
                 // call module auto-detection / configuration
                 try {
diff --git a/collectors/node.d.plugin/node.d.plugin.in b/collectors/node.d.plugin/node.d.plugin.in
new file mode 100755
index 000000000..05c126e90
--- /dev/null
+++ b/collectors/node.d.plugin/node.d.plugin.in
@@ -0,0 +1,303 @@
+#!/usr/bin/env bash
+':' //; exec "$(command -v nodejs || command -v node || echo "ERROR node IS NOT AVAILABLE IN THIS SYSTEM")" "$0" "$@"
+
+// shebang hack from:
+// http://unix.stackexchange.com/questions/65235/universal-node-js-shebang
+
+// Initially this is run as a shell script.
+// Then, the second line, finds nodejs or node or js in the system path
+// and executes it with the shell parameters.
+
+// netdata
+// real-time performance and health monitoring, done right!
+// (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+// --------------------------------------------------------------------------------------------------------------------
+
+'use strict';
+
+// --------------------------------------------------------------------------------------------------------------------
+// get NETDATA environment variables
+
+var NETDATA_PLUGINS_DIR = process.env.NETDATA_PLUGINS_DIR || __dirname;
+var NETDATA_USER_CONFIG_DIR = process.env.NETDATA_USER_CONFIG_DIR || '@configdir_POST@';
+var NETDATA_STOCK_CONFIG_DIR = process.env.NETDATA_STOCK_CONFIG_DIR || '@libconfigdir_POST@';
+var NETDATA_UPDATE_EVERY = process.env.NETDATA_UPDATE_EVERY || 1;
+var NODE_D_DIR = NETDATA_PLUGINS_DIR + '/../node.d';
+
+// make sure the modules are found
+process.mainModule.paths.unshift(NODE_D_DIR + '/node_modules');
+process.mainModule.paths.unshift(NODE_D_DIR);
+
+
+// --------------------------------------------------------------------------------------------------------------------
+// load required modules
+
+var fs = require('fs');
+var url = require('url');
+var util = require('util');
+var http = require('http');
+var path = require('path');
+var extend = require('extend');
+var netdata = require('netdata');
+
+
+// --------------------------------------------------------------------------------------------------------------------
+// configuration
+
+function netdata_read_json_config_file(module_filename) {
+    var f = path.basename(module_filename);
+
+    var ufilename, sfilename;
+
+    var m = f.match('.plugin' + '$');
+    if(m !== null) {
+        ufilename = netdata.options.paths.config + '/' + f.substring(0, m.index) + '.conf';
+        sfilename = netdata.options.paths.stock_config + '/' + f.substring(0, m.index) + '.conf';
+    }
+
+    m = f.match('.node.js' + '$');
+    if(m !== null) {
+        ufilename = netdata.options.paths.config + '/node.d/' + f.substring(0, m.index) + '.conf';
+        sfilename = netdata.options.paths.stock_config + '/node.d/' + f.substring(0, m.index) + '.conf';
+    }
+
+    try {
+        netdata.debug('loading module\'s ' + module_filename + ' user-config ' + ufilename);
+        return JSON.parse(fs.readFileSync(ufilename, 'utf8'));
+    }
+    catch(e) {
+        netdata.error('Cannot read user-configuration file ' + ufilename + ': ' + e.message + '.');
+        dumpError(e);
+    }
+
+    try {
+        netdata.debug('loading module\'s ' + module_filename + ' stock-config ' + sfilename);
+        return JSON.parse(fs.readFileSync(sfilename, 'utf8'));
+    }
+    catch(e) {
+        netdata.error('Cannot read stock-configuration file ' + sfilename + ': ' + e.message + ', using internal defaults.');
+        dumpError(e);
+    }
+
+    return {};
+}
+
+// internal defaults
+extend(true, netdata.options, {
+    filename: path.basename(__filename),
+
+    update_every: NETDATA_UPDATE_EVERY,
+
+    paths: {
+        plugins: NETDATA_PLUGINS_DIR,
+        config: NETDATA_USER_CONFIG_DIR,
+        stock_config: NETDATA_STOCK_CONFIG_DIR,
+        modules: []
+    },
+
+    modules_enable_autodetect: true,
+    modules_enable_all: true,
+    modules: {}
+});
+
+// load configuration file
+netdata.options_loaded = netdata_read_json_config_file(__filename);
+extend(true, netdata.options, netdata.options_loaded);
+
+if(!netdata.options.paths.plugins)
+    netdata.options.paths.plugins = NETDATA_PLUGINS_DIR;
+
+if(!netdata.options.paths.config)
+    netdata.options.paths.config = NETDATA_USER_CONFIG_DIR;
+
+if(!netdata.options.paths.stock_config)
+    netdata.options.paths.stock_config = NETDATA_STOCK_CONFIG_DIR;
+
+// console.error('merged netdata object:');
+// console.error(util.inspect(netdata, {depth: 10}));
+
+
+// apply module paths to node.js process
+function applyModulePaths() {
+    var len = netdata.options.paths.modules.length;
+    while(len--)
+        process.mainModule.paths.unshift(netdata.options.paths.modules[len]);
+}
+applyModulePaths();
+
+
+// --------------------------------------------------------------------------------------------------------------------
+// tracing
+
+function dumpError(err) {
+    if (typeof err === 'object') {
+        if (err.stack) {
+            netdata.debug(err.stack);
+        }
+    }
+}
+
+// --------------------------------------------------------------------------------------------------------------------
+// get command line arguments
+{
+    var found_myself = false;
+    var found_number = false;
+    var found_modules = false;
+    process.argv.forEach(function (val, index, array) {
+        netdata.debug('PARAM: ' + val);
+
+        if(!found_myself) {
+            if(val === __filename)
+                found_myself = true;
+        }
+        else {
+            switch(val) {
+                case 'debug':
+                    netdata.options.DEBUG = true;
+                    netdata.debug('DEBUG enabled');
+                    break;
+
+                default:
+                    if(found_number === true) {
+                        if(found_modules === false) {
+                            for(var i in netdata.options.modules)
+                                netdata.options.modules[i].enabled = false;
+                        }
+
+                        if(typeof netdata.options.modules[val] === 'undefined')
+                            netdata.options.modules[val] = {};
+
+                        netdata.options.modules[val].enabled = true;
+                        netdata.options.modules_enable_all = false;
+                        netdata.debug('enabled module ' + val);
+                    }
+                    else {
+                        try {
+                            var x = parseInt(val);
+                            if(x > 0) {
+                                netdata.options.update_every = x;
+                                if(netdata.options.update_every < NETDATA_UPDATE_EVERY) {
+                                    netdata.options.update_every = NETDATA_UPDATE_EVERY;
+                                    netdata.debug('Update frequency ' + x + 's is too low');
+                                }
+
+                                found_number = true;
+                                netdata.debug('Update frequency set to ' + netdata.options.update_every + ' seconds');
+                            }
+                            else netdata.error('Ignoring parameter: ' + val);
+                        }
+                        catch(e) {
+                            netdata.error('Cannot get value of parameter: ' + val);
+                            dumpError(e);
+                        }
+                    }
+                    break;
+            }
+        }
+    });
+}
+
+if(netdata.options.update_every < 1) {
+    netdata.debug('Adjusting update frequency to 1 second');
+    netdata.options.update_every = 1;
+}
+
+// --------------------------------------------------------------------------------------------------------------------
+// find modules
+
+function findModules() {
+    var found = 0;
+
+    var files = fs.readdirSync(NODE_D_DIR);
+    var len = files.length;
+    while(len--) {
+        var m = files[len].match('.node.js' + '$');
+        if(m !== null) {
+            var n = files[len].substring(0, m.index);
+
+            if(typeof(netdata.options.modules[n]) === 'undefined')
+                netdata.options.modules[n] = { name: n, enabled: netdata.options.modules_enable_all };
+
+            if(netdata.options.modules[n].enabled === true) {
+                netdata.options.modules[n].name = n;
+                netdata.options.modules[n].filename = NODE_D_DIR + '/' + files[len];
+                netdata.options.modules[n].loaded = false;
+
+                // load the module
+                try {
+                    netdata.debug('loading module ' + netdata.options.modules[n].filename);
+                    netdata.options.modules[n].module = require(netdata.options.modules[n].filename);
+                    netdata.options.modules[n].module.name = n;
+                    netdata.debug('loaded module ' + netdata.options.modules[n].name + ' from ' + netdata.options.modules[n].filename);
+                }
+                catch(e) {
+                    netdata.options.modules[n].enabled = false;
+                    netdata.error('Cannot load module: ' + netdata.options.modules[n].filename + ' exception: ' + e);
+                    dumpError(e);
+                    continue;
+                }
+
+                // load its configuration
+                var c = {
+                    enable_autodetect: netdata.options.modules_enable_autodetect,
+                    update_every: netdata.options.update_every
+                };
+
+                var c2 = netdata_read_json_config_file(files[len]);
+                extend(true, c, c2);
+
+                // call module auto-detection / configuration
+                try {
+                    netdata.modules_configuring++;
+                    netdata.debug('Configuring module ' + netdata.options.modules[n].name);
+                    var serv = netdata.configure(netdata.options.modules[n].module, c, function() {
+                        netdata.debug('Configured module ' + netdata.options.modules[n].name);
+                        netdata.modules_configuring--;
+                    });
+
+                    netdata.debug('Configuring module ' + netdata.options.modules[n].name + ' reports ' + serv + ' eligible services.');
+                }
+                catch(e) {
+                    netdata.modules_configuring--;
+                    netdata.options.modules[n].enabled = false;
+                    netdata.error('Failed module auto-detection: ' + netdata.options.modules[n].name + ' exception: ' + e + ', disabling module.');
+                    dumpError(e);
+                    continue;
+                }
+
+                netdata.options.modules[n].loaded = true;
+                found++;
+            }
+        }
+    }
+
+    // netdata.debug(netdata.options.modules);
+    return found;
+}
+
+if(findModules() === 0) {
+    netdata.error('Cannot load any .node.js module from: ' + NODE_D_DIR);
+    netdata.disableNodePlugin();
+    process.exit(1);
+}
+
+
+// --------------------------------------------------------------------------------------------------------------------
+// start
+
+function start_when_configuring_ends() {
+    if(netdata.modules_configuring > 0) {
+        netdata.debug('Waiting modules configuration, still running ' + netdata.modules_configuring);
+        setTimeout(start_when_configuring_ends, 500);
+        return;
+    }
+
+    netdata.modules_configuring = 0;
+    netdata.start();
+}
+start_when_configuring_ends();
+
+//netdata.debug('netdata object:')
+//netdata.debug(netdata);
diff --git a/node.d/node_modules/asn1-ber.js b/collectors/node.d.plugin/node_modules/asn1-ber.js
index 57809f486..55c8f688e 100644
--- a/node.d/node_modules/asn1-ber.js
+++ b/collectors/node.d.plugin/node_modules/asn1-ber.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 
 var Ber = require('./lib/ber/index')
 
diff --git a/node.d/node_modules/extend.js b/collectors/node.d.plugin/node_modules/extend.js
index 0fdd8be22..3cd2e9155 100644
--- a/node.d/node_modules/extend.js
+++ b/collectors/node.d.plugin/node_modules/extend.js
@@ -1,4 +1,5 @@
 // https://github.com/justmoon/node-extend
+// SPDX-License-Identifier: MIT
 
 'use strict';
 
diff --git a/node.d/node_modules/lib/ber/errors.js b/collectors/node.d.plugin/node_modules/lib/ber/errors.js
index 0106747e6..1c0df7b13 100644
--- a/node.d/node_modules/lib/ber/errors.js
+++ b/collectors/node.d.plugin/node_modules/lib/ber/errors.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 
 module.exports = {
 	InvalidAsn1Error: function(msg) {
diff --git a/node.d/node_modules/lib/ber/index.js b/collectors/node.d.plugin/node_modules/lib/ber/index.js
index 65985c1e1..eb69ec526 100644
--- a/node.d/node_modules/lib/ber/index.js
+++ b/collectors/node.d.plugin/node_modules/lib/ber/index.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 
 var errors = require('./errors')
 var types = require('./types')
diff --git a/node.d/node_modules/lib/ber/reader.js b/collectors/node.d.plugin/node_modules/lib/ber/reader.js
index f93d829aa..06decf4b9 100644
--- a/node.d/node_modules/lib/ber/reader.js
+++ b/collectors/node.d.plugin/node_modules/lib/ber/reader.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 
 var assert = require('assert');
 
diff --git a/node.d/node_modules/lib/ber/types.js b/collectors/node.d.plugin/node_modules/lib/ber/types.js
index 345824bb1..7519ddcf5 100644
--- a/node.d/node_modules/lib/ber/types.js
+++ b/collectors/node.d.plugin/node_modules/lib/ber/types.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 
 module.exports = {
 	EOC: 0,
diff --git a/node.d/node_modules/lib/ber/writer.js b/collectors/node.d.plugin/node_modules/lib/ber/writer.js
index bf9805886..d3a718f14 100644
--- a/node.d/node_modules/lib/ber/writer.js
+++ b/collectors/node.d.plugin/node_modules/lib/ber/writer.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 
 var assert = require('assert');
 var ASN1 = require('./types');
diff --git a/node.d/node_modules/net-snmp.js b/collectors/node.d.plugin/node_modules/net-snmp.js
index ac9a8d350..484597dcb 100644
--- a/node.d/node_modules/net-snmp.js
+++ b/collectors/node.d.plugin/node_modules/net-snmp.js
@@ -1,5 +1,6 @@
 
 // Copyright 2013 Stephen Vickers <stephen.vickers.sv@gmail.com>
+// SPDX-License-Identifier: MIT
 
 var ber = require ("asn1-ber").Ber;
 var dgram = require ("dgram");
@@ -577,6 +578,10 @@ var Session = function (target, community, options) {
 			? parseInt(options.sourcePort)
 			: undefined;
 
+	this.idBitsSize = (options && options.idBitsSize)
+			? parseInt(options.idBitsSize)
+			: 32;
+
 	this.reqs = {};
 	this.reqCount = 0;
 
@@ -608,8 +613,11 @@ Session.prototype.cancelRequests = function (error) {
 	}
 };
 
-function _generateId () {
-	return Math.floor (Math.random () + Math.random () * 10000000)
+function _generateId (bitSize) {
+	if (bitSize === 16) {
+		return Math.floor(Math.random() * 10000) % 65535;
+	}
+	return Math.floor(Math.random() * 100000000) % 4294967295;
 }
 
 Session.prototype.get = function (oids, responseCb) {
@@ -1043,7 +1051,7 @@ Session.prototype.simpleGet = function (pduClass, feedCb, varbinds,
 	var req = {};
 
 	try {
-		var id = _generateId ();
+		var id = _generateId (this.idBitsSize);
 		var pdu = new pduClass (id, varbinds, options);
 		var message = new RequestMessage (this.version, this.community, pdu);
 
@@ -1289,7 +1297,7 @@ Session.prototype.trap = function () {
 			pduVarbinds.push (varbind);
 		}
 		
-		var id = _generateId ();
+		var id = _generateId (this.idBitsSize);
 
 		if (this.version == Version2c) {
 			if (typeof typeOrOid != "string")
diff --git a/node.d/node_modules/netdata.js b/collectors/node.d.plugin/node_modules/netdata.js
index 4ab8308c1..603922c6e 100644
--- a/node.d/node_modules/netdata.js
+++ b/collectors/node.d.plugin/node_modules/netdata.js
@@ -3,7 +3,7 @@
 // netdata
 // real-time performance and health monitoring, done right!
 // (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
-// GPL v3+
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 var url = require('url');
 var http = require('http');
diff --git a/node.d/node_modules/pixl-xml.js b/collectors/node.d.plugin/node_modules/pixl-xml.js
index 481acbaeb..48de89e77 100644
--- a/node.d/node_modules/pixl-xml.js
+++ b/collectors/node.d.plugin/node_modules/pixl-xml.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 /*
 	JavaScript XML Library
 	Plus a bunch of object utility functions
diff --git a/collectors/node.d.plugin/sma_webbox/Makefile.inc b/collectors/node.d.plugin/sma_webbox/Makefile.inc
new file mode 100644
index 000000000..38f2fe97a
--- /dev/null
+++ b/collectors/node.d.plugin/sma_webbox/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_node_DATA       += sma_webbox/sma_webbox.node.js
+# dist_nodeconfig_DATA += sma_webbox/sma_webbox.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += sma_webbox/README.md sma_webbox/Makefile.inc
+
diff --git a/conf.d/node.d/sma_webbox.conf.md b/collectors/node.d.plugin/sma_webbox/README.md
index 19fdc9dd3..1512c7008 100644
--- a/conf.d/node.d/sma_webbox.conf.md
+++ b/collectors/node.d.plugin/sma_webbox/README.md
@@ -1,5 +1,5 @@
 

-[SMA Sunny Webbox](http://www.solar-is-future.com/sma-technology-for-our-future/products/sunny-webbox/index.html)

+[SMA Sunny Webbox](http://files.sma.de/dl/4253/WEBBOX-DUS131916W.pdf)

 

 Example netdata configuration for node.d/sma_webbox.conf

 

diff --git a/node.d/sma_webbox.node.js b/collectors/node.d.plugin/sma_webbox/sma_webbox.node.js
index 3d99943d4..b9a168adc 100644
--- a/node.d/sma_webbox.node.js
+++ b/collectors/node.d.plugin/sma_webbox/sma_webbox.node.js
@@ -1,4 +1,5 @@
 'use strict';
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 // This program will connect to one or more SMA Sunny Webboxes
 // to get the Solar Power Generated (current, today, total).
@@ -23,8 +24,8 @@
 }
 */
 
-var url = require('url');
-var http = require('http');
+require('url');
+require('http');
 var netdata = require('netdata');
 
 if(netdata.options.DEBUG === true) netdata.debug('loaded ' + __filename + ' plugin');
diff --git a/collectors/node.d.plugin/snmp/Makefile.inc b/collectors/node.d.plugin/snmp/Makefile.inc
new file mode 100644
index 000000000..26448a1ce
--- /dev/null
+++ b/collectors/node.d.plugin/snmp/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_node_DATA       += snmp/snmp.node.js
+# dist_nodeconfig_DATA += snmp/snmp.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += snmp/README.md snmp/Makefile.inc
+
diff --git a/conf.d/node.d/snmp.conf.md b/collectors/node.d.plugin/snmp/README.md
index 6b496f7a8..a307a3642 100644
--- a/conf.d/node.d/snmp.conf.md
+++ b/collectors/node.d.plugin/snmp/README.md
@@ -10,8 +10,6 @@ This collector supports:
 - each SNMP device may have a different update frequency
 - each SNMP device will accept one or more batches to report values (you can set `max_request_size` per SNMP server, to control the size of batches).
 
-The source code of the plugin is [here](https://github.com/firehol/netdata/blob/master/node.d/snmp.node.js).
-
 ## Configuration
 
 You will need to create the file `/etc/netdata/node.d/snmp.conf` with data like the following.
@@ -23,7 +21,7 @@ In this example:
  - we will update the values every 10 seconds (`update_every: 10` under the server `10.11.12.8`).
  - we define 2 charts `snmp_switch.bandwidth_port1` and `snmp_switch.bandwidth_port2`, each having 2 dimensions: `in` and `out`.
 
-```js
+```json
 {
     "enable_autodetect": false,
     "update_every": 5,
@@ -105,7 +103,7 @@ Each of the 24 new charts will have its id (1-24) appended at:
 3. its `oid` (for all dimensions), i.e. dimension `in` will be `1.3.6.1.2.1.2.2.1.10.1` to `1.3.6.1.2.1.2.2.1.10.24`
 3. its priority (which will be incremented for each chart so that the charts will appear on the dashboard in this order)
 
-```js
+```json
 {
     "enable_autodetect": false,
     "update_every": 10,
@@ -154,7 +152,7 @@ The `options` given for each server, are:
  - `port`, the port of the SNMP device to connect to. The default is `161`.
  - `retries`, the number of attempts to make to fetch the data. The default is `1`.
 
-## Retreiving names from snmp
+## Retrieving names from snmp
 
 You can append a value retrieved from SNMP to the title, by adding `titleoid` to the chart.
 
@@ -177,7 +175,7 @@ If it works, restart netdata to activate the snmp collector and refresh the dash
 
 ## Data collection speed
 
-Keep in mind that many SNMP switches are routers are very slow. They may not be able to report values per second. If you run `node.d.plugin` in `debug` mode, it will report the time it took for the SNMP device to respond. My switch, for example, needs 7-8 seconds to respond for the traffic on 24 ports (48 OIDs, in/out).
+Keep in mind that many SNMP switches and routers are very slow. They may not be able to report values per second. If you run `node.d.plugin` in `debug` mode, it will report the time it took for the SNMP device to respond. My switch, for example, needs 7-8 seconds to respond for the traffic on 24 ports (48 OIDs, in/out).
 
 Also, if you use many SNMP clients on the same SNMP device at the same time, values may be skipped. This is a problem of the SNMP device, not this collector.
 
@@ -210,7 +208,7 @@ This switch also reports various other metrics, like snmp, packets per port, etc
 
 This switch has a very slow SNMP processors. To respond, it needs about 8 seconds, so I have set the refresh frequency (`update_every`) to 15 seconds.
 
-```js
+```json
 {
     "enable_autodetect": false,
     "update_every": 5,
diff --git a/node.d/snmp.node.js b/collectors/node.d.plugin/snmp/snmp.node.js
index 3e7027958..a051d3d3a 100644
--- a/node.d/snmp.node.js
+++ b/collectors/node.d.plugin/snmp/snmp.node.js
@@ -1,4 +1,5 @@
 'use strict';
+// SPDX-License-Identifier: GPL-3.0-or-later
 // netdata snmp module
 // This program will connect to one or more SNMP Agents
 //
@@ -170,7 +171,7 @@ netdata.processors.snmp = {
 
                     var oid = this.fixoid(dim.oid);
                     var oidname = this.fixoid(dim.oidname);
-                    
+
                     if(__DEBUG === true)
                         netdata.debug(service.module.name + ': ' + service.name + ': indexing ' + this.name + ' chart: ' + c + ', dimension: ' + d + ', OID: ' + oid + ", OID name: " + oidname);
 
@@ -275,14 +276,16 @@ netdata.processors.snmp = {
 
                         switch(varbinds[i].type) {
                             case net_snmp.ObjectType.OctetString:
-                                if(service.snmp_oids_index[varbinds[i].oid].type !== 'title')
+                                if (service.snmp_oids_index[varbinds[i].oid].type !== 'title' && service.snmp_oids_index[varbinds[i].oid].type !== 'name') {
                                     // parse floating point values, exposed as strings
                                     value = parseFloat(varbinds[i].value) * 1000;
-                                    if(__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': found ' + service.module.name + ' value of OIDs ' + varbinds[i].oid + ", ObjectType " + net_snmp.ObjectType[varbinds[i].type] + " (" + netdata.stringify(varbinds[i].type) + "), typeof(" + typeof(varbinds[i].value) + "), in JSON: " + netdata.stringify(varbinds[i].value) + ", value = " + value.toString() + " (parsed as float in string)");
-                                else
+                                    if (__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': found ' + service.module.name + ' value of OIDs ' + varbinds[i].oid + ", ObjectType " + net_snmp.ObjectType[varbinds[i].type] + " (" + netdata.stringify(varbinds[i].type) + "), typeof(" + typeof(varbinds[i].value) + "), in JSON: " + netdata.stringify(varbinds[i].value) + ", value = " + value.toString() + " (parsed as float in string)");
+                                }
+                                else {
                                     // just use the string
                                     value = varbinds[i].value;
-                                    if(__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': found ' + service.module.name + ' value of OIDs ' + varbinds[i].oid + ", ObjectType " + net_snmp.ObjectType[varbinds[i].type] + " (" + netdata.stringify(varbinds[i].type) + "), typeof(" + typeof(varbinds[i].value) + "), in JSON: " + netdata.stringify(varbinds[i].value) + ", value = " + value.toString() + " (parsed as string)");
+                                    if (__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': found ' + service.module.name + ' value of OIDs ' + varbinds[i].oid + ", ObjectType " + net_snmp.ObjectType[varbinds[i].type] + " (" + netdata.stringify(varbinds[i].type) + "), typeof(" + typeof(varbinds[i].value) + "), in JSON: " + netdata.stringify(varbinds[i].value) + ", value = " + value.toString() + " (parsed as string)");
+                                }
                                 break;
 
                             case net_snmp.ObjectType.Counter64:
@@ -306,7 +309,7 @@ netdata.processors.snmp = {
                     if(value !== null) {
                         switch(service.snmp_oids_index[varbinds[i].oid].type) {
                             case 'title': service.snmp_oids_index[varbinds[i].oid].link.title += ' ' + value; break;
-                            case 'name' : service.snmp_oids_index[varbinds[i].oid].link.name = value; break;
+                            case 'name' : service.snmp_oids_index[varbinds[i].oid].link.name = value.toString().replace(/\W/g, '_'); break;
                             case 'value': service.snmp_oids_index[varbinds[i].oid].link.value = value; break;
                         }
                     }
@@ -445,7 +448,7 @@ var snmp = {
                     var id = c + from.toString();
                     var chart = extend(true, {}, service_request_chart);
                     chart.title += from.toString();
-                    
+
                     if(typeof chart.titleoid !== 'undefined')
                         chart.titleoid += from.toString();
 
diff --git a/collectors/node.d.plugin/stiebeleltron/Makefile.inc b/collectors/node.d.plugin/stiebeleltron/Makefile.inc
new file mode 100644
index 000000000..0c6e1e213
--- /dev/null
+++ b/collectors/node.d.plugin/stiebeleltron/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_node_DATA       += stiebeleltron/stiebeleltron.node.js
+# dist_nodeconfig_DATA += stiebeleltron/stiebeleltron.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += stiebeleltron/README.md stiebeleltron/Makefile.inc
+
diff --git a/conf.d/node.d/stiebeleltron.conf.md b/collectors/node.d.plugin/stiebeleltron/README.md
index 6ae5aa1c7..002a31571 100644
--- a/conf.d/node.d/stiebeleltron.conf.md
+++ b/collectors/node.d.plugin/stiebeleltron/README.md
@@ -1,3 +1,55 @@
+# stiebel eltron
+
+This module collects metrics from the configured heat pump and hot water installation from Stiebel Eltron ISG web.
+
+**Requirements**
+ * Configuration file `stiebeleltron.conf` in the node.d netdata config dir (default: `/etc/netdata/node.d/stiebeleltron.conf`)
+ * Stiebel Eltron ISG web with network access (http), without password login
+
+The charts are configurable, however, the provided default configuration collects the following:
+
+1. **General**
+ * Outside temperature in C
+ * Condenser temperature in C
+ * Heating circuit pressure in bar
+ * Flow rate in l/min
+ * Output of water and heat pumps in %
+
+2. **Heating**
+ * Heat circuit 1 temperature in C (set/actual)
+ * Heat circuit 2 temperature in C (set/actual)
+ * Flow temperature in C (set/actual)
+ * Buffer temperature in C (set/actual)
+ * Pre-flow temperature in C
+
+3. **Hot Water**
+ * Hot water temperature in C (set/actual)
+
+4. **Room Temperature**
+ * Heat circuit 1 room temperature in C (set/actual)
+ * Heat circuit 2 room temperature in C (set/actual)
+
+5. **Eletric Reheating**
+ * Dual Mode Reheating temperature in C (hot water/heating)
+
+6. **Process Data**
+ * Remaining compressor rest time in s
+
+7. **Runtime**
+ * Compressor runtime hours (hot water/heating)
+ * Reheating runtime hours (reheating 1/reheating 2)
+
+8. **Energy**
+ * Compressor today in kWh (hot water/heating)
+ * Compressor Total in kWh (hot water/heating)
+ 
+ 
+### configuration
+
+If no configuration is given, the module will be disabled. Each `update_every` is optional, the default is `10`.
+
+---
+
 [Stiebel Eltron Heat pump system with ISG](https://www.stiebel-eltron.com/en/home/products-solutions/renewables/controller_energymanagement/internet_servicegateway/isg_web.html)
 
 Original author: BrainDoctor (github)
@@ -24,7 +76,7 @@ In my case, the ISG is relatively slow with responding (at least 1s, but also up
 * The dimensions support variable digits, the default is `1`. Most of the values printed by ISG are using 1 digit, some use 2.
 * The dimensions also support the `multiplier` and `divisor` attributes, however the divisor gets overridden by `digits`, if specified. Default is `1`.
 * The test string for the regex is always the whole HTML output from the url. For each parameter you need to have a regular expression that extracts the value from the HTML source in the first capture group.
-  Recommended: [regexr.com](regexr.com) for testing and matching, [freeformatter.com](https://www.freeformatter.com/json-escape.html) for escaping the newly created regex for the JSON config.
+  Recommended: [regexr.com](https://regexr.com/) for testing and matching, [freeformatter.com](https://www.freeformatter.com/json-escape.html) for escaping the newly created regex for the JSON config.
 
 The charts are being generated using the configuration below. So if your installation is in another language or has other metrics, just adapt the structure or regexes.
 ### Configuration template
diff --git a/node.d/stiebeleltron.node.js b/collectors/node.d.plugin/stiebeleltron/stiebeleltron.node.js
index 77317f2fb..250c26540 100644
--- a/node.d/stiebeleltron.node.js
+++ b/collectors/node.d.plugin/stiebeleltron/stiebeleltron.node.js
@@ -1,12 +1,13 @@
 'use strict';
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 // This program will connect to one Stiebel Eltron ISG for heatpump heating
 // to get the heat pump metrics.
 
 // example configuration in netdata/conf.d/node.d/stiebeleltron.conf.md
 
-var url = require("url");
-var http = require("http");
+require("url");
+require("http");
 var netdata = require("netdata");
 
 netdata.debug("loaded " + __filename + " plugin");
diff --git a/collectors/plugins.d/Makefile.am b/collectors/plugins.d/Makefile.am
new file mode 100644
index 000000000..59250a997
--- /dev/null
+++ b/collectors/plugins.d/Makefile.am
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    $(NULL)
+
+dist_noinst_DATA = \
+    README.md \
+    $(NULL)
diff --git a/collectors/plugins.d/Makefile.in b/collectors/plugins.d/Makefile.in
new file mode 100644
index 000000000..b2c112811
--- /dev/null
+++ b/collectors/plugins.d/Makefile.in
@@ -0,0 +1,647 @@
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+	list='$(SUBDIRS)'; for subdir in $$list; do \
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+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
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+.MAKE: $(am__recursive_targets) install-am install-strip
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+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
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+	distclean distclean-generic distclean-tags distdir dvi dvi-am \
+	html html-am info info-am install install-am install-data \
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+	install-exec-am install-html install-html-am install-info \
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+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/plugins.d/README.md b/collectors/plugins.d/README.md
new file mode 100644
index 000000000..d3aa5b5b0
--- /dev/null
+++ b/collectors/plugins.d/README.md
@@ -0,0 +1,472 @@
+# Netdata External Plugins
+
+`plugins.d` is the netdata internal plugin that collects metrics
+from external processes, thus allowing netdata to use **external plugins**.
+
+## Provided External Plugins
+
+plugin|language|O/S|description
+:---:|:---:|:---:|:---
+[apps.plugin](../apps.plugin/)|`C`|linux, freebsd|monitors the whole process tree on Linux and FreeBSD and breaks down system resource usage by **process**, **user** and **user group**.
+[charts.d.plugin](../charts.d.plugin/)|`BASH`|all|a **plugin orchestrator** for data collection modules written in `BASH` v4+.
+[fping.plugin](../fping.plugin/)|`C`|all|measures network latency, jitter and packet loss between the monitored node and any number of remote network end points.
+[freeipmi.plugin](../freeipmi.plugin/)|`C`|linux|collects metrics from enterprise hardware sensors, on Linux servers.
+[node.d.plugin](../node.d.plugin/)|`node.js`|all|a **plugin orchestrator** for data collection modules written in `node.js`.
+[python.d.plugin](../python.d.plugin/)|`python`|all|a **plugin orchestrator** for data collection modules written in `python` v2 or v3 (both are supported).
+
+Plugin orchestrators may also be described as **modular plugins**. They are modular since they accept custom made modules to be included. Writing modules for these plugins is easier than accessing the native netdata API directly. You will find modules already available for each orchestrator under the directory of the particular modular plugin (e.g. under python.d.plugin for the python orchestrator). 
+Each of these modular plugins has each own methods for defining modules. Please check the examples and their documentation.
+
+## Motivation
+
+This plugin allows netdata to use **external plugins** for data collection:
+
+1. external data collection plugins may be written in any computer language.
+
+2. external data collection plugins may use O/S capabilities or `setuid` to
+   run with escalated privileges (compared to the netdata daemon).
+   The communication between the external plugin and netdata is unidirectional
+   (from the plugin to netdata), so that netdata cannot manipulate an external
+   plugin running with escalated privileges.
+
+## Operation
+
+Each of the external plugins is expected to run forever.
+Netdata will start it when it starts and stop it when it exits.
+
+If the external plugin exits or crashes, netdata will log an error.
+If the external plugin exits or crashes without pushing metrics to netdata, netdata will not start it again.
+- Plugins that exit with any value other than zero, will be disabled. Plugins that exit with zero, will be restarted after some time.
+- Plugins may also be disabled by netdata if they output things that netdata does not understand.
+
+The `stdout` of external plugins is connected to netdata to receive metrics,
+with the API defined below.
+
+The `stderr` of external plugins is connected to netdata `error.log`.
+
+Plugins can create any number of charts with any number of dimensions each. Each chart can have its own characteristics independently of the others generated by the same plugin. For example, one chart may have an update frequency of 1 second, another may have 5 seconds and a third may have 10 seconds.
+
+## Configuration
+
+Netdata will supply the environment variables `NETDATA_USER_CONFIG_DIR` (for user supplied) and `NETDATA_STOCK_CONFIG_DIR` (for netdata supplied) configuration files to identify the directory where configuration files are stored. It is up to the plugin to read the configuration it needs. 
+
+The `netdata.conf` section [plugins] section contains a list of all the plugins found at the system where netdata runs, with a boolean setting to enable them or not. 
+
+Example:
+
+```
+[plugins]
+	# enable running new plugins = yes
+	# check for new plugins every = 60
+	
+	# charts.d = yes
+	# fping = yes
+	# node.d = yes
+	# python.d = yes
+```
+
+The setting `enable running new plugins` changes the default behavior for all external plugins.
+So if set to `no`, only the plugins that are explicitly set to `yes` will be run.
+
+The setting `check for new plugins every` controls the time the directory `/usr/libexec/netdata/plugins.d`
+will be rescanned for new plugins. So, new plugins can give added anytime. 
+
+For each of the external plugins enabled, another `netdata.conf` section
+is created, in the form of `[plugin:NAME]`, where `NAME` is the name of the external plugin.
+This section allows controlling the update frequency of the plugin and provide
+additional command line arguments to it.
+
+For example, for `apps.plugin` the following section is available:
+
+```
+[plugin:apps]
+	# update every = 1
+	# command options = 
+```
+
+- `update every` controls the granularity of the external plugin.
+- `command options` allows giving additional command line options to the plugin.
+
+
+Netdata will provide to the extrenal plugins the environment variable `NETDATA_UPDATE_EVERY`, in seconds (the default is 1). This is the **minimum update frequency** for all charts. A plugin that is updating values more frequently than this, is just wasting resources.
+
+Netdata will call the plugin with just one command line parameter: the number of seconds the user requested this plugin to update its data (by default is also 1).
+
+Other than the above, the plugin configuration is up to the plugin.
+
+Keep in mind, that the user may use netdata configuration to overwrite chart and dimension parameters. This is transparent to the plugin.
+
+### Autoconfiguration
+
+Plugins should attempt to autoconfigure themselves when possible.
+
+For example, if your plugin wants to monitor `squid`, you can search for it on port `3128` or `8080`. If any succeeds, you can proceed. If it fails you can output an error (on stderr) saying that you cannot find `squid` running and giving instructions about the plugin configuration. Then you can stop (exit with non-zero value), so that netdata will not attempt to start the plugin again.
+
+## External Plugins API
+
+Any program that can print a few values to its standard output can become a netdata external plugin.
+
+There are 7 lines netdata parses. lines starting with:
+
+- `CHART` - create or update a chart
+- `DIMENSION` - add or update a dimension to the chart just created
+- `BEGIN` - initialize data collection for a chart
+- `SET` - set the value of a dimension for the initialized chart
+- `END` - complete data collection for the initialized chart
+- `FLUSH` - ignore the last collected values
+- `DISABLE` - disable this plugin
+
+a single program can produce any number of charts with any number of dimensions each.
+
+Charts can be added any time (not just the beginning).
+
+### command line parameters
+
+The plugin **MUST** accept just **one** parameter: **the number of seconds it is
+expected to update the values for its charts**. The value passed by netdata
+to the plugin is controlled via its configuration file (so there is no need
+for the plugin to handle this configuration option).
+
+The external plugin can overwrite the update frequency. For example, the server may
+request per second updates, but the plugin may ignore it and update its charts
+every 5 seconds.
+
+### environment variables
+
+There are a few environment variables that are set by `netdata` and are
+available for the plugin to use.
+
+variable|description
+:------:|:----------
+`NETDATA_USER_CONFIG_DIR`|The directory where all netdata related user configuration should be stored. If the plugin requires custom user configuration, this is the place the user has saved it (normally under `/etc/netdata`).
+`NETDATA_STOCK_CONFIG_DIR`|The directory where all netdata related stock configuration should be stored. If the plugin is shipped with configuration files, this is the place they can be found (normally under `/usr/lib/netdata/conf.d`).
+`NETDATA_PLUGINS_DIR`|The directory where all netdata plugins are stored.
+`NETDATA_WEB_DIR`|The directory where the web files of netdata are saved.
+`NETDATA_CACHE_DIR`|The directory where the cache files of netdata are stored. Use this directory if the plugin requires a place to store data. A new directory should be created for the plugin for this purpose, inside this directory.
+`NETDATA_LOG_DIR`|The directory where the log files are stored. By default the `stderr` output of the plugin will be saved in the `error.log` file of netdata.
+`NETDATA_HOST_PREFIX`|This is used in environments where system directories like `/sys` and `/proc` have to be accessed at a different path.
+`NETDATA_DEBUG_FLAGS`|This is a number (probably in hex starting with `0x`), that enables certain netdata debugging features. Check **[[Tracing Options]]** for more information.
+`NETDATA_UPDATE_EVERY`|The minimum number of seconds between chart refreshes. This is like the **internal clock** of netdata (it is user configurable, defaulting to `1`). There is no meaning for a plugin to update its values more frequently than this number of seconds.
+
+
+### The output of the plugin
+
+The plugin should output instructions for netdata to its output (`stdout`). Since this uses pipes, please make sure you flush stdout after every iteration.
+
+#### DISABLE
+
+`DISABLE` will disable this plugin. This will prevent netdata from restarting the plugin. You can also exit with the value `1` to have the same effect.
+
+#### CHART
+
+`CHART` defines a new chart.
+
+the template is:
+
+> CHART type.id name title units [family [context [charttype [priority [update_every [options [plugin [module]]]]]]]]
+
+ where:
+  - `type.id`
+
+    uniquely identifies the chart,
+    this is what will be needed to add values to the chart
+
+    the `type` part controls the menu the charts will appear in
+
+  - `name`
+
+    is the name that will be presented to the user instead of `id` in `type.id`. This means that only the `id` part of `type.id` is changed. When a name has been given, the chart is index (and can be referred) as both `type.id` and `type.name`. You can set name to `''`, or `null`, or `(null)` to disable it.
+
+  - `title`
+
+    the text above the chart
+
+  - `units`
+
+    the label of the vertical axis of the chart,
+    all dimensions added to a chart should have the same units
+    of measurement
+
+  - `family`
+
+    is used to group charts together
+    (for example all eth0 charts should say: eth0),
+    if empty or missing, the `id` part of `type.id` will be used
+    
+    this controls the sub-menu on the dashboard
+
+  - `context`
+
+    the context is giving the template of the chart. For example, if multiple charts present the same information for a different family, they should have the same `context`
+
+    this is used for looking up rendering information for the chart (colors, sizes, informational texts) and also apply alarms to it
+
+  - `charttype`
+
+    one of `line`, `area` or `stacked`,
+    if empty or missing, the `line` will be used
+
+  - `priority`
+
+    is the relative priority of the charts as rendered on the web page,
+    lower numbers make the charts appear before the ones with higher numbers,
+    if empty or missing, `1000` will be used
+
+  - `update_every`
+
+    overwrite the update frequency set by the server,
+    if empty or missing, the user configured value will be used
+
+  - `options`
+
+    a space separated list of options, enclosed in quotes. 4 options are currently supported: `obsolete` to mark a chart as obsolete (netdata will hide it and delete it after some time), `detail` to mark a chart as insignificant (this may be used by dashboards to make the charts smaller, or somehow visualize properly a less important chart), `store_first` to make netdata store the first collected value, assuming there was an invisible previous value set to zero (this is used by statsd charts - if the first data collected value of incremental dimensions is not zero based, unrealistic spikes will appear with this option set) and `hidden` to perform all operations on a chart, but do not offer it on dashboards (the chart will be send to backends). `CHART` options have been added in netdata v1.7 and the `hidden` option was added in 1.10.
+
+  - `plugin` and `module`
+
+    both are just names that are used to let the user identify the plugin and the module that generated the chart. If `plugin` is unset or empty, netdata will automatically set the filename of the plugin that generated the chart. `module` has not default.
+
+
+#### DIMENSION
+
+`DIMENSION` defines a new dimension for the chart
+
+the template is:
+
+> DIMENSION id [name [algorithm [multiplier [divisor [hidden]]]]]
+
+ where:
+
+  - `id`
+
+    the `id` of this dimension (it is a text value, not numeric),
+    this will be needed later to add values to the dimension
+
+    We suggest to avoid using `.` in dimension ids. Backends expect metrics to be `.` separated and people will get confused if a dimension id contains a dot.
+
+  - `name`
+
+    the name of the dimension as it will appear at the legend of the chart,
+    if empty or missing the `id` will be used
+
+  - `algorithm`
+
+    one of:
+
+    * `absolute`
+
+      the value is to drawn as-is (interpolated to second boundary),
+      if `algorithm` is empty, invalid or missing, `absolute` is used
+
+    * `incremental`
+
+      the value increases over time,
+      the difference from the last value is presented in the chart,
+      the server interpolates the value and calculates a per second figure
+
+    * `percentage-of-absolute-row`
+
+      the % of this value compared to the total of all dimensions
+
+    * `percentage-of-incremental-row`
+
+      the % of this value compared to the incremental total of
+      all dimensions
+
+  - `multiplier`
+
+    an integer value to multiply the collected value,
+    if empty or missing, `1` is used
+
+  - `divisor`
+
+    an integer value to divide the collected value,
+    if empty or missing, `1` is used
+
+  - `hidden`
+
+    giving the keyword `hidden` will make this dimension hidden,
+    it will take part in the calculations but will not be presented in the chart
+
+
+#### VARIABLE
+
+> VARIABLE [SCOPE] name = value
+
+`VARIABLE` defines a variable that can be used in alarms. This is to used for setting constants (like the max connections a server may accept).
+
+Variables support 2 scopes:
+
+- `GLOBAL` or `HOST` to define the variable at the host level.
+- `LOCAL` or `CHART` to define the variable at the chart level. Use chart-local variables when the same variable may exist for different charts (i.e. netdata monitors 2 mysql servers, and you need to set the `max_connections` each server accepts). Using chart-local variables is the ideal to build alarm templates.
+
+The position of the `VARIABLE` line, sets its default scope (in case you do not specify a scope). So, defining a `VARIABLE` before any `CHART`, or between `END` and `BEGIN` (outside any chart), sets `GLOBAL` scope, while defining a `VARIABLE` just after a `CHART` or a `DIMENSION`, or within the `BEGIN` - `END` block of a chart, sets `LOCAL` scope.
+
+These variables can be set and updated at any point.
+
+Variable names should use alphanumeric characters, the `.` and the `_`.
+
+The `value` is floating point (netdata used `long double`).
+
+Variables are transferred to upstream netdata servers (streaming and database replication).
+
+## Data collection
+
+data collection is defined as a series of `BEGIN` -> `SET` -> `END` lines
+
+> BEGIN type.id [microseconds]
+
+  - `type.id`
+
+    is the unique identification of the chart (as given in `CHART`)
+
+  - `microseconds`
+
+    is the number of microseconds since the last update of the chart. It is optional.
+
+    Under heavy system load, the system may have some latency transferring
+    data from the plugins to netdata via the pipe. This number improves
+    accuracy significantly, since the plugin is able to calculate the
+    duration between its iterations better than netdata.
+
+    The first time the plugin is started, no microseconds should be given
+    to netdata.
+
+> SET id = value
+
+   - `id`
+
+     is the unique identification of the dimension (of the chart just began)
+
+   - `value`
+
+     is the collected value, only integer values are collected. If you want to push fractional values, multiply this value by 100 or 1000 and set the `DIMENSION` divider to 1000.
+
+> END
+
+  END does not take any parameters, it commits the collected values for all dimensions to the chart. If a dimensions was not `SET`, its value will be empty for this commit.
+
+More `SET` lines may appear to update all the dimensions of the chart.
+All of them in one `BEGIN` -> `END` block.
+
+All `SET` lines within a single `BEGIN` -> `END` block have to refer to the
+same chart.
+
+If more charts need to be updated, each chart should have its own
+`BEGIN` -> `SET` -> `END` block.
+
+If, for any reason, a plugin has issued a `BEGIN` but wants to cancel it,
+it can issue a `FLUSH`. The `FLUSH` command will instruct netdata to ignore
+all the values collected since the last `BEGIN` command.
+
+If a plugin does not behave properly (outputs invalid lines, or does not
+follow these guidelines), will be disabled by netdata.
+
+### collected values
+
+netdata will collect any **signed** value in the 64bit range:
+`-9.223.372.036.854.775.808` to `+9.223.372.036.854.775.807`
+
+If a value is not collected, leave it empty, like this:
+
+`SET id = `
+
+or do not output the line at all.
+
+## Modular Plugins
+
+1. **python**, use `python.d.plugin`, there are many examples in the [python.d directory](../python.d.plugin)
+
+   python is ideal for netdata plugins. It is a simple, yet powerful way to collect data, it has a very small memory footprint, although it is not the most CPU efficient way to do it.
+
+2. **node.js**, use `node.d.plugin`, there are a few examples in the [node.d directory](../node.d.plugin)
+
+   node.js is the fastest scripting language for collecting data. If your plugin needs to do a lot of work, compute values, etc, node.js is probably the best choice before moving to compiled code. Keep in mind though that node.js is not memory efficient; it will probably need more RAM compared to python.
+
+3. **BASH**, use `charts.d.plugin`, there are many examples in the [charts.d directory](../charts.d.plugin)
+
+   BASH is the simplest scripting language for collecting values. It is the less efficient though in terms of CPU resources. You can use it to collect data quickly, but extensive use of it might use a lot of system resources.
+
+4. **C**
+
+   Of course, C is the most efficient way of collecting data. This is why netdata itself is written in C.
+
+---
+
+## Writing Plugins Properly
+
+There are a few rules for writing plugins properly:
+
+1. Respect system resources
+
+   Pay special attention to efficiency:
+
+      - Initialize everything once, at the beginning. Initialization is not an expensive operation. Your plugin will most probably be started once and run forever. So, do whatever heavy operation is needed at the beginning, just once.
+      - Do the absolutely minimum while iterating to collect values repeatedly.
+      - If you need to connect to another server to collect values, avoid re-connects if possible. Connect just once, with keep-alive (for HTTP) enabled and collect values using the same connection.
+      - Avoid any CPU or memory heavy operation while collecting data. If you control memory allocation, avoid any memory allocation white iterating to collect values.
+      - Avoid running external commands when possible. If you are writing shell scripts avoid especially pipes (each pipe is another fork, a very expensive operation).
+
+2. The best way to iterate at a constant pace is this pseudo code:
+
+```js
+   var update_every = argv[1] * 1000; /* seconds * 1000 = milliseconds */
+
+   readConfiguration();
+   
+   if(!verifyWeCanCollectValues()) {
+      print "DISABLE";
+      exit(1);
+   }
+
+   createCharts(); /* print CHART and DIMENSION statements */
+
+   var loops = 0;
+   var last_run = 0;
+   var next_run = 0;
+   var dt_since_last_run = 0;
+   var now = 0;
+
+   FOREVER {
+       /* find the current time in milliseconds */
+       now = currentTimeStampInMilliseconds();
+
+       /*
+        * find the time of the next loop
+        * this makes sure we are always aligned
+        * with the netdata daemon
+        */
+       next_run = now - (now % update_every) + update_every;
+
+       /*
+        * wait until it is time
+        * it is important to do it in a loop
+        * since many wait functions can be interrupted
+        */
+       while( now < next_run ) {
+           sleepMilliseconds(next_run - now);
+           now = currentTimeStampInMilliseconds();
+       }
+       
+       /* calculate the time passed since the last run */
+       if ( loops > 0 )
+           dt_since_last_run = (now - last_run) * 1000; /* in microseconds */
+
+       /* prepare for the next loop */
+       last_run = now;
+       loops++;
+
+       /* do your magic here to collect values */
+       collectValues();
+
+       /* send the collected data to netdata */
+       printValues(dt_since_last_run); /* print BEGIN, SET, END statements */
+   }
+```
+
+   Using the above procedure, your plugin will be synchronized to start data collection on steps of `update_every`. There will be no need to keep track of latencies in data collection.
+
+   Netdata interpolates values to second boundaries, so even if your plugin is not perfectly aligned it does not matter. Netdata will find out. When your plugin works in increments of `update_every`, there will be no gaps in the charts due to the possible cumulative micro-delays in data collection. Gaps will only appear if the data collection is really delayed.
+
+3. If you are not sure of memory leaks, exit every one hour. Netdata will re-start your process.
+
+4. If possible, try to autodetect if your plugin should be enabled, without any configuration.
diff --git a/src/plugins_d.c b/collectors/plugins.d/plugins_d.c
index 5693dda06..465ecd796 100644
--- a/src/plugins_d.c
+++ b/collectors/plugins.d/plugins_d.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugins_d.h"
 
 char *plugin_directories[PLUGINSD_MAX_DIRECTORIES] = { NULL };
 char *netdata_configured_plugins_dir_base;
diff --git a/src/plugins_d.h b/collectors/plugins.d/plugins_d.h
index 692d7cae1..adccf3f0f 100644
--- a/src/plugins_d.h
+++ b/collectors/plugins.d/plugins_d.h
@@ -1,6 +1,22 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_PLUGINS_D_H
 #define NETDATA_PLUGINS_D_H 1
 
+#include "../../daemon/common.h"
+
+#define NETDATA_PLUGIN_HOOK_PLUGINSD \
+    { \
+        .name = "PLUGINSD", \
+        .config_section = NULL, \
+        .config_name = NULL, \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = pluginsd_main \
+    },
+
+
 #define PLUGINSD_FILE_SUFFIX ".plugin"
 #define PLUGINSD_FILE_SUFFIX_LEN strlen(PLUGINSD_FILE_SUFFIX)
 #define PLUGINSD_CMD_MAX (FILENAME_MAX*2)
diff --git a/collectors/proc.plugin/Makefile.am b/collectors/proc.plugin/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/collectors/proc.plugin/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/collectors/proc.plugin/Makefile.in b/collectors/proc.plugin/Makefile.in
new file mode 100644
index 000000000..f6db90c87
--- /dev/null
+++ b/collectors/proc.plugin/Makefile.in
@@ -0,0 +1,464 @@
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+psdir = @psdir@
+pythondir = @pythondir@
+registrydir = @registrydir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+varlibdir = @varlibdir@
+webdir = @webdir@
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/proc.plugin/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu collectors/proc.plugin/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/proc.plugin/README.md b/collectors/proc.plugin/README.md
new file mode 100644
index 000000000..9d444f3d0
--- /dev/null
+++ b/collectors/proc.plugin/README.md
@@ -0,0 +1,200 @@
+
+# proc.plugin
+
+ - `/proc/net/dev` (all network interfaces for all their values)
+ - `/proc/diskstats` (all disks for all their values)
+ - `/proc/net/snmp` (total IPv4, TCP and UDP usage)
+ - `/proc/net/snmp6` (total IPv6 usage)
+ - `/proc/net/netstat` (more IPv4 usage)
+ - `/proc/net/stat/nf_conntrack` (connection tracking performance)
+ - `/proc/net/stat/synproxy` (synproxy performance)
+ - `/proc/net/ip_vs/stats` (IPVS connection statistics)
+ - `/proc/stat` (CPU utilization)
+ - `/proc/meminfo` (memory information)
+ - `/proc/vmstat` (system performance)
+ - `/proc/net/rpc/nfsd` (NFS server statistics for both v3 and v4 NFS servers)
+ - `/sys/fs/cgroup` (Control Groups - Linux Containers)
+ - `/proc/self/mountinfo` (mount points)
+ - `/proc/interrupts` (total and per core hardware interrupts)
+ - `/proc/softirqs` (total and per core software interrupts)
+ - `/proc/loadavg` (system load and total processes running)
+ - `/proc/sys/kernel/random/entropy_avail` (random numbers pool availability - used in cryptography)
+ - `ksm` Kernel Same-Page Merging performance (several files under `/sys/kernel/mm/ksm`).
+ - `netdata` (internal netdata resources utilization)
+
+
+---
+
+# Monitoring Disks
+
+> Live demo of disk monitoring at: **[http://london.netdata.rocks](https://registry.my-netdata.io/#menu_disk)**
+
+Performance monitoring for Linux disks is quite complicated. The main reason is the plethora of disk technologies available. There are many different hardware disk technologies, but there are even more **virtual disk** technologies that can provide additional storage features.
+
+Hopefully, the Linux kernel provides many metrics that can provide deep insights of what our disks our doing. The kernel measures all these metrics on all layers of storage: **virtual disks**, **physical disks** and **partitions of disks**.
+
+Let's see the list of metrics provided by netdata for each of the above:
+
+### I/O bandwidth/s (kb/s)
+
+The amount of data transferred from and to the disk.
+
+### I/O operations/s
+
+The number of I/O operations completed.
+
+### Queued I/O operations
+
+The number of currently queued I/O operations. For traditional disks that execute commands one after another, one of them is being run by the disk and the rest are just waiting in a queue.
+
+### Backlog size (time in ms)
+
+The expected duration of the currently queued I/O operations.
+
+### Utilization (time percentage)
+
+The percentage of time the disk was busy with something. This is a very interesting metric, since for most disks, that execute commands sequentially, **this is the key indication of congestion**. A sequential disk that is 100% of the available time busy, has no time to do anything more, so even if the bandwidth or the number of operations executed by the disk is low, its capacity has been reached.
+
+Of course, for newer disk technologies (like fusion cards) that are capable to execute multiple commands in parallel, this metric is just meaningless.
+
+### Average I/O operation time (ms)
+
+The average time for I/O requests issued to the device to be served. This includes the time spent by the requests in queue and the time spent servicing them.
+
+### Average I/O operation size (kb)
+
+The average amount of data of the completed I/O operations.
+
+### Average Service Time (ms)
+
+The average service time for completed I/O operations. This metric is calculated using the total busy time of the disk and the number of completed operations. If the disk is able to execute multiple parallel operations the reporting average service time will be misleading.
+
+### Merged I/O operations/s
+
+The Linux kernel is capable of merging I/O operations. So, if two requests to read data from the disk are adjacent, the Linux kernel may merge them to one before giving them to disk. This metric measures the number of operations that have been merged by the Linux kernel.
+
+### Total I/O time
+
+The sum of the duration of all completed I/O operations. This number can exceed the interval if the disk is able to execute multiple I/O operations in parallel.
+
+### Space usage
+
+For mounted disks, netdata will provide a chart for their space, with 3 dimensions:
+
+1. free
+2. used
+3. reserved for root
+
+### inode usage
+
+For mounted disks, netdata will provide a chart for their inodes (number of file and directories), with 3 dimensions:
+
+1. free
+2. used
+3. reserved for root
+
+---
+
+## disk names
+
+netdata will automatically set the name of disks on the dashboard, from the mount point they are mounted, of course only when they are mounted. Changes in mount points are not currently detected (you will have to restart netdata to change the name of the disk).
+
+---
+
+## performance metrics
+
+By default netdata will enable monitoring metrics only when they are not zero. If they are constantly zero they are ignored. Metrics that will start having values, after netdata is started, will be detected and charts will be automatically added to the dashboard (a refresh of the dashboard is needed for them to appear though).
+
+netdata categorizes all block devices in 3 categories:
+
+1. physical disks (i.e. block devices that does not have slaves and are not partitions)
+2. virtual disks (i.e. block devices that have slaves - like RAID devices)
+3. disk partitions (i.e. block devices that are part of a physical disk)
+
+Performance metrics are enabled by default for all disk devices, except partitions and not-mounted virtual disks. Of course, you can enable/disable monitoring any block device by editing the netdata configuration file.
+
+### netdata configuration
+
+You can get the running netdata configuration using this:
+
+```sh
+cd /etc/netdata
+curl "http://localhost:19999/netdata.conf" >netdata.conf.new
+mv netdata.conf.new netdata.conf
+```
+
+Then edit `netdata.conf` and find the following section. This is the basic plugin configuration.
+
+```
+[plugin:proc:/proc/diskstats]
+	# enable new disks detected at runtime = yes
+	# performance metrics for physical disks = auto
+	# performance metrics for virtual disks = no
+	# performance metrics for partitions = no
+	# performance metrics for mounted filesystems = no
+	# performance metrics for mounted virtual disks = auto
+	# space metrics for mounted filesystems = auto
+	# bandwidth for all disks = auto
+	# operations for all disks = auto
+	# merged operations for all disks = auto
+	# i/o time for all disks = auto
+	# queued operations for all disks = auto
+	# utilization percentage for all disks = auto
+	# backlog for all disks = auto
+	# space usage for all disks = auto
+	# inodes usage for all disks = auto
+	# filename to monitor = /proc/diskstats
+	# path to get block device infos = /sys/dev/block/%lu:%lu/%s
+	# path to get h/w sector size = /sys/block/%s/queue/hw_sector_size
+	# path to get h/w sector size for partitions = /sys/dev/block/%lu:%lu/subsystem/%s/../queue
+/hw_sector_size
+        
+```
+
+For each virtual disk, physical disk and partition you will have a section like this:
+
+```
+[plugin:proc:/proc/diskstats:sda]
+	# enable = yes
+	# enable performance metrics = auto
+	# bandwidth = auto
+	# operations = auto
+	# merged operations = auto
+	# i/o time = auto
+	# queued operations = auto
+	# utilization percentage = auto
+	# backlog = auto
+```
+
+For all configuration options:
+- `auto` = enable monitoring if the collected values are not zero
+- `yes` = enable monitoring
+- `no` = disable monitoring
+
+Of course, to set options, you will have to uncomment them. The comments show the internal defaults.
+
+After saving `/etc/netdata/netdata.conf`, restart your netdata to apply them.
+
+#### Disabling performance metrics for individual device and to multiple devices by device type
+You can pretty easy disable performance metrics for individual device, for ex.:
+```
+[plugin:proc:/proc/diskstats:sda]
+	enable performance metrics = no
+```
+But sometimes you need disable performance metrics for all devices with the same type, to do it you need to figure out device type from `/proc/diskstats` for ex.:
+```
+   7       0 loop0 1651 0 3452 168 0 0 0 0 0 8 168
+   7       1 loop1 4955 0 11924 880 0 0 0 0 0 64 880
+   7       2 loop2 36 0 216 4 0 0 0 0 0 4 4
+   7       6 loop6 0 0 0 0 0 0 0 0 0 0 0
+   7       7 loop7 0 0 0 0 0 0 0 0 0 0 0
+ 251       2 zram2 27487 0 219896 188 79953 0 639624 1640 0 1828 1828
+ 251       3 zram3 27348 0 218784 152 79952 0 639616 1960 0 2060 2104
+```
+All zram devices starts with `251` number and all loop devices starts with `7`.  
+So, to disable performance metrics for all loop devices you could add `performance metrics for disks with major 7 = no` to `[plugin:proc:/proc/diskstats]` section.
+```
+[plugin:proc:/proc/diskstats]
+       performance metrics for disks with major 7 = no
+```
+
diff --git a/src/ipc.c b/collectors/proc.plugin/ipc.c
index a9076fca4..6c6bee519 100644
--- a/src/ipc.c
+++ b/collectors/proc.plugin/ipc.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 
 #include <sys/sem.h>
 #include <sys/msg.h>
@@ -166,7 +168,7 @@ int do_ipc(int update_every, usec_t dt) {
     static int initialized = 0, read_limits_next = -1;
     static struct ipc_limits limits;
     static struct ipc_status status;
-    static RRDSETVAR *arrays_max = NULL, *semaphores_max = NULL;
+    static RRDVAR *arrays_max = NULL, *semaphores_max = NULL;
     static RRDSET *st_semaphores = NULL, *st_arrays = NULL;
     static RRDDIM *rd_semaphores = NULL, *rd_arrays = NULL;
 
@@ -195,9 +197,9 @@ int do_ipc(int update_every, usec_t dt) {
                     , NULL
                     , "IPC Semaphores"
                     , "semaphores"
-                    , "linux"
+                    , PLUGIN_PROC_NAME
                     , "ipc"
-                    , 1000
+                    , NETDATA_CHART_PRIO_SYSTEM_IPC_SEMAPHORES
                     , localhost->rrd_update_every
                     , RRDSET_TYPE_AREA
             );
@@ -213,9 +215,9 @@ int do_ipc(int update_every, usec_t dt) {
                     , NULL
                     , "IPC Semaphore Arrays"
                     , "arrays"
-                    , "linux"
+                    , PLUGIN_PROC_NAME
                     , "ipc"
-                    , 1000
+                    , NETDATA_CHART_PRIO_SYSTEM_IPC_SEM_ARRAYS
                     , localhost->rrd_update_every
                     , RRDSET_TYPE_AREA
             );
@@ -223,8 +225,8 @@ int do_ipc(int update_every, usec_t dt) {
         }
 
         // variables
-        semaphores_max = rrdsetvar_custom_chart_variable_create(st_semaphores, "ipc.semaphores.max");
-        arrays_max     = rrdsetvar_custom_chart_variable_create(st_arrays, "ipc.semaphores.arrays.max");
+        semaphores_max = rrdvar_custom_host_variable_create(localhost, "ipc_semaphores_max");
+        arrays_max     = rrdvar_custom_host_variable_create(localhost, "ipc_semaphores_arrays_max");
     }
 
     if(unlikely(read_limits_next < 0)) {
@@ -232,8 +234,8 @@ int do_ipc(int update_every, usec_t dt) {
             error("Unable to fetch semaphore limits.");
         }
         else {
-            if(semaphores_max) rrdsetvar_custom_chart_variable_set(semaphores_max, limits.semmns);
-            if(arrays_max)     rrdsetvar_custom_chart_variable_set(arrays_max,     limits.semmni);
+            if(semaphores_max) rrdvar_custom_host_variable_set(localhost, semaphores_max, limits.semmns);
+            if(arrays_max)     rrdvar_custom_host_variable_set(localhost, arrays_max,     limits.semmni);
 
             st_arrays->red = limits.semmni;
             st_semaphores->red = limits.semmns;
diff --git a/src/plugin_proc.c b/collectors/proc.plugin/plugin_proc.c
index e0afb0d6d..0c3244d61 100644
--- a/src/plugin_proc.c
+++ b/collectors/proc.plugin/plugin_proc.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 
 static struct proc_module {
     const char *name;
@@ -37,6 +39,7 @@ static struct proc_module {
         { .name = "/proc/net/netstat", .dim = "netstat", .func = do_proc_net_netstat }, // this has to be before /proc/net/snmp, because there is a shared metric
         { .name = "/proc/net/snmp", .dim = "snmp", .func = do_proc_net_snmp },
         { .name = "/proc/net/snmp6", .dim = "snmp6", .func = do_proc_net_snmp6 },
+        { .name = "/proc/net/sctp/snmp", .dim = "sctp", .func = do_proc_net_sctp_snmp },
         { .name = "/proc/net/softnet_stat", .dim = "softnet", .func = do_proc_net_softnet_stat },
         { .name = "/proc/net/ip_vs/stats", .dim = "ipvs", .func = do_proc_net_ip_vs_stats },
 
@@ -91,8 +94,12 @@ void *proc_main(void *ptr) {
     usec_t step = localhost->rrd_update_every * USEC_PER_SEC;
     heartbeat_t hb;
     heartbeat_init(&hb);
+    size_t iterations = 0;
 
     while(!netdata_exit) {
+        iterations++;
+        (void)iterations;
+
         usec_t hb_dt = heartbeat_next(&hb, step);
         usec_t duration = 0ULL;
 
@@ -106,10 +113,19 @@ void *proc_main(void *ptr) {
 
             debug(D_PROCNETDEV_LOOP, "PROC calling %s.", pm->name);
 
+//#ifdef NETDATA_LOG_ALLOCATIONS
+//            if(pm->func == do_proc_interrupts)
+//                log_thread_memory_allocations = iterations;
+//#endif
             pm->enabled = !pm->func(localhost->rrd_update_every, hb_dt);
-            pm->duration = heartbeat_dt_usec(&hb) - duration;
+            pm->duration = heartbeat_monotonic_dt_to_now_usec(&hb) - duration;
             duration += pm->duration;
 
+//#ifdef NETDATA_LOG_ALLOCATIONS
+//            if(pm->func == do_proc_interrupts)
+//                log_thread_memory_allocations = 0;
+//#endif
+
             if(unlikely(netdata_exit)) break;
         }
 
diff --git a/src/plugin_proc.h b/collectors/proc.plugin/plugin_proc.h
index a7f9b4e38..bfefe1ad4 100644
--- a/src/plugin_proc.h
+++ b/collectors/proc.plugin/plugin_proc.h
@@ -1,7 +1,28 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_PLUGIN_PROC_H
 #define NETDATA_PLUGIN_PROC_H 1
 
-void *proc_main(void *ptr);
+#include "../../daemon/common.h"
+
+#if (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_PROC \
+    { \
+        .name = "PLUGIN[proc]", \
+        .config_section = CONFIG_SECTION_PLUGINS, \
+        .config_name = "proc", \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = proc_main \
+    },
+
+
+#define PLUGIN_PROC_CONFIG_NAME "proc"
+#define PLUGIN_PROC_NAME PLUGIN_PROC_CONFIG_NAME ".plugin"
+
+extern void *proc_main(void *ptr);
 
 extern int do_proc_net_dev(int update_every, usec_t dt);
 extern int do_proc_diskstats(int update_every, usec_t dt);
@@ -29,7 +50,8 @@ extern int do_proc_spl_kstat_zfs_arcstats(int update_every, usec_t dt);
 extern int do_sys_fs_btrfs(int update_every, usec_t dt);
 extern int do_proc_net_sockstat(int update_every, usec_t dt);
 extern int do_proc_net_sockstat6(int update_every, usec_t dt);
-
+extern int do_proc_net_sctp_snmp(int update_every, usec_t dt);
+extern int do_ipc(int update_every, usec_t dt);
 extern int get_numa_node_count(void);
 
 // metrics that need to be shared among data collectors
@@ -39,4 +61,14 @@ extern unsigned long long tcpext_TCPSynRetrans;
 extern void netdev_rename_device_add(const char *host_device, const char *container_device, const char *container_name);
 extern void netdev_rename_device_del(const char *host_device);
 
+#include "proc_self_mountinfo.h"
+#include "zfs_common.h"
+
+#else // (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_PROC
+
+#endif // (TARGET_OS == OS_LINUX)
+
+
 #endif /* NETDATA_PLUGIN_PROC_H */
diff --git a/src/proc_diskstats.c b/collectors/proc.plugin/proc_diskstats.c
index 8cde3334b..387b395a3 100644
--- a/src/proc_diskstats.c
+++ b/collectors/proc.plugin/proc_diskstats.c
@@ -1,13 +1,16 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 
 #define RRD_TYPE_DISK "disk"
+#define PLUGIN_PROC_MODULE_DISKSTATS_NAME "/proc/diskstats"
+#define CONFIG_SECTION_PLUGIN_PROC_DISKSTATS "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_DISKSTATS_NAME
 
 #define DISK_TYPE_UNKNOWN   0
 #define DISK_TYPE_PHYSICAL  1
 #define DISK_TYPE_PARTITION 2
 #define DISK_TYPE_VIRTUAL   3
 
-#define CONFIG_SECTION_DISKSTATS "plugin:proc:/proc/diskstats"
 #define DEFAULT_EXCLUDED_DISKS "loop* ram*"
 
 static struct disk {
@@ -48,6 +51,12 @@ static struct disk {
     char *bcache_filename_stats_total_cache_bypass_hits;
     char *bcache_filename_stats_total_cache_bypass_misses;
     char *bcache_filename_stats_total_cache_readaheads;
+    char *bcache_filename_cache_read_races;
+    char *bcache_filename_cache_io_errors;
+    char *bcache_filename_priority_stats;
+
+    usec_t bcache_priority_stats_update_every_usec;
+    usec_t bcache_priority_stats_elapsed_usec;
 
     RRDSET *st_io;
     RRDDIM *rd_io_reads;
@@ -111,6 +120,17 @@ static struct disk {
     RRDDIM *rd_bcache_readaheads;
     RRDDIM *rd_bcache_rate_writeback;
 
+    RRDSET *st_bcache_cache_allocations;
+    RRDDIM *rd_bcache_cache_allocations_unused;
+    RRDDIM *rd_bcache_cache_allocations_clean;
+    RRDDIM *rd_bcache_cache_allocations_dirty;
+    RRDDIM *rd_bcache_cache_allocations_metadata;
+    RRDDIM *rd_bcache_cache_allocations_unknown;
+
+    RRDSET *st_bcache_cache_read_races;
+    RRDDIM *rd_bcache_cache_read_races;
+    RRDDIM *rd_bcache_cache_io_errors;
+
     struct disk *next;
 } *disk_root = NULL;
 
@@ -125,7 +145,9 @@ static char *path_to_sys_devices_virtual_block_device = NULL;
 static char *path_to_device_mapper = NULL;
 static char *path_to_device_label = NULL;
 static char *path_to_device_id = NULL;
+static char *path_to_veritas_volume_groups = NULL;
 static int name_disks_by_id = CONFIG_BOOLEAN_NO;
+static int global_bcache_priority_stats_update_every = 0; // disabled by default
 
 static int  global_enable_new_disks_detected_at_runtime = CONFIG_BOOLEAN_YES,
         global_enable_performance_for_physical_disks = CONFIG_BOOLEAN_AUTO,
@@ -170,6 +192,98 @@ static unsigned long long int bcache_read_number_with_units(const char *filename
     return 0;
 }
 
+void bcache_read_priority_stats(struct disk *d, const char *family, int update_every, usec_t dt) {
+    static procfile *ff = NULL;
+    static char *separators = " \t:%[]";
+
+    static ARL_BASE *arl_base = NULL;
+
+    static unsigned long long unused;
+    static unsigned long long clean;
+    static unsigned long long dirty;
+    static unsigned long long metadata;
+    static unsigned long long unknown;
+
+    // check if it is time to update this metric
+    d->bcache_priority_stats_elapsed_usec += dt;
+    if(likely(d->bcache_priority_stats_elapsed_usec < d->bcache_priority_stats_update_every_usec)) return;
+    d->bcache_priority_stats_elapsed_usec = 0;
+
+    // initialize ARL
+    if(unlikely(!arl_base)) {
+        arl_base = arl_create("bcache/priority_stats", NULL, 60);
+        arl_expect(arl_base, "Unused", &unused);
+        arl_expect(arl_base, "Clean", &clean);
+        arl_expect(arl_base, "Dirty", &dirty);
+        arl_expect(arl_base, "Metadata", &metadata);
+    }
+
+    ff = procfile_reopen(ff, d->bcache_filename_priority_stats, separators, PROCFILE_FLAG_DEFAULT);
+    if(likely(ff)) ff = procfile_readall(ff);
+    if(unlikely(!ff)) {
+        separators = " \t:%[]";
+        return;
+    }
+
+    // do not reset the separators on every iteration
+    separators = NULL;
+
+    arl_begin(arl_base);
+    unused = clean = dirty = metadata = unknown = 0;
+
+    size_t lines = procfile_lines(ff), l;
+
+    for(l = 0; l < lines ;l++) {
+        size_t words = procfile_linewords(ff, l);
+        if(unlikely(words < 2)) {
+            if(unlikely(words)) error("Cannot read '%s' line %zu. Expected 2 params, read %zu.", d->bcache_filename_priority_stats, l, words);
+            continue;
+        }
+
+        if(unlikely(arl_check(arl_base,
+                procfile_lineword(ff, l, 0),
+                procfile_lineword(ff, l, 1)))) break;
+    }
+
+    unknown = 100 - unused - clean - dirty - metadata;
+
+    // create / update the cache allocations chart
+    {
+        if(unlikely(!d->st_bcache_cache_allocations)) {
+            d->st_bcache_cache_allocations = rrdset_create_localhost(
+                    "disk_bcache_cache_alloc"
+                    , d->device
+                    , d->disk
+                    , family
+                    , "disk.bcache_cache_alloc"
+                    , "BCache Cache Allocations"
+                    , "percentage"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                    , NETDATA_CHART_PRIO_BCACHE_CACHE_ALLOC
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            d->rd_bcache_cache_allocations_unused    = rrddim_add(d->st_bcache_cache_allocations, "unused",     NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+            d->rd_bcache_cache_allocations_dirty     = rrddim_add(d->st_bcache_cache_allocations, "dirty",      NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+            d->rd_bcache_cache_allocations_clean     = rrddim_add(d->st_bcache_cache_allocations, "clean",      NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+            d->rd_bcache_cache_allocations_metadata  = rrddim_add(d->st_bcache_cache_allocations, "metadata",   NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+            d->rd_bcache_cache_allocations_unknown   = rrddim_add(d->st_bcache_cache_allocations, "undefined",  NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+
+            d->bcache_priority_stats_update_every_usec = update_every * USEC_PER_SEC;
+        }
+        else rrdset_next(d->st_bcache_cache_allocations);
+
+        rrddim_set_by_pointer(d->st_bcache_cache_allocations, d->rd_bcache_cache_allocations_unused, unused);
+        rrddim_set_by_pointer(d->st_bcache_cache_allocations, d->rd_bcache_cache_allocations_dirty, dirty);
+        rrddim_set_by_pointer(d->st_bcache_cache_allocations, d->rd_bcache_cache_allocations_clean, clean);
+        rrddim_set_by_pointer(d->st_bcache_cache_allocations, d->rd_bcache_cache_allocations_metadata, metadata);
+        rrddim_set_by_pointer(d->st_bcache_cache_allocations, d->rd_bcache_cache_allocations_unknown, unknown);
+        rrdset_done(d->st_bcache_cache_allocations);
+    }
+}
+
 static inline int is_major_enabled(int major) {
     static int8_t *major_configs = NULL;
     static size_t major_size = 0;
@@ -191,67 +305,101 @@ static inline int is_major_enabled(int major) {
     if(major_configs[major] == -1) {
         char buffer[CONFIG_MAX_NAME + 1];
         snprintfz(buffer, CONFIG_MAX_NAME, "performance metrics for disks with major %d", major);
-        major_configs[major] = (char)config_get_boolean(CONFIG_SECTION_DISKSTATS, buffer, 1);
+        major_configs[major] = (char)config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, buffer, 1);
     }
 
     return (int)major_configs[major];
 }
 
-static inline int get_disk_name_from_path(const char *path, char *result, size_t result_size, unsigned long major, unsigned long minor, char *disk) {
-    char filename[FILENAME_MAX + 1];
-    int found = 0;
+static inline int get_disk_name_from_path(const char *path, char *result, size_t result_size, unsigned long major, unsigned long minor, char *disk, char *prefix, int depth) {
+    //info("DEVICE-MAPPER ('%s', %lu:%lu): examining directory '%s' (allowed depth %d).", disk, major, minor, path, depth);
 
-    result_size--;
+    int found = 0;
 
     DIR *dir = opendir(path);
     if (!dir) {
-        error("DEVICE-MAPPER ('%s', %lu:%lu): Cannot open directory '%s'. Disabling device-mapper support.", disk, major, minor, path);
-        goto cleanup;
+        error("DEVICE-MAPPER ('%s', %lu:%lu): Cannot open directory '%s'.", disk, major, minor, path);
+        goto failed;
     }
 
     struct dirent *de = NULL;
     while ((de = readdir(dir))) {
-        if(de->d_type != DT_LNK) continue;
+        if(de->d_type == DT_DIR) {
+            if((de->d_name[0] == '.' && de->d_name[1] == '\0') || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0'))
+                continue;
 
-        snprintfz(filename, FILENAME_MAX, "%s/%s", path, de->d_name);
-        ssize_t len = readlink(filename, result, result_size);
-        if(len <= 0) {
-            error("DEVICE-MAPPER ('%s', %lu:%lu): Cannot read link '%s'.", disk, major, minor, filename);
-            continue;
-        }
+            if(depth <= 0) {
+                error("DEVICE-MAPPER ('%s', %lu:%lu): Depth limit reached for path '%s/%s'. Ignoring path.", disk, major, minor, path, de->d_name);
+                break;
+            }
+            else {
+                char *path_nested = NULL;
+                char *prefix_nested = NULL;
 
-        result[len] = '\0';
-        if(result[0] != '/')
-            snprintfz(filename, FILENAME_MAX, "%s/%s", path, result);
-        else
-            strncpyz(filename, result, FILENAME_MAX);
+                {
+                    char buffer[FILENAME_MAX + 1];
+                    snprintfz(buffer, FILENAME_MAX, "%s/%s", path, de->d_name);
+                    path_nested = strdupz(buffer);
 
-        struct stat sb;
-        if(stat(filename, &sb) == -1) {
-            error("DEVICE-MAPPER ('%s', %lu:%lu): Cannot stat() file '%s'.", disk, major, minor, filename);
-            continue;
-        }
+                    snprintfz(buffer, FILENAME_MAX, "%s%s%s", (prefix)?prefix:"", (prefix)?"_":"", de->d_name);
+                    prefix_nested = strdupz(buffer);
+                }
 
-        if((sb.st_mode & S_IFMT) != S_IFBLK) {
-            // info("DEVICE-MAPPER ('%s', %lu:%lu): file '%s' is not a block device.", disk, major, minor, filename);
-            continue;
-        }
+                found = get_disk_name_from_path(path_nested, result, result_size, major, minor, disk, prefix_nested, depth - 1);
+                freez(path_nested);
+                freez(prefix_nested);
 
-        if(major(sb.st_rdev) != major || minor(sb.st_rdev) != minor) {
-            // info("DEVICE-MAPPER ('%s', %lu:%lu): filename '%s' does not match %lu:%lu.", disk, major, minor, filename, (unsigned long)major(sb.st_rdev), (unsigned long)minor(sb.st_rdev));
-            continue;
+                if(found) break;
+            }
         }
+        else if(de->d_type == DT_LNK || de->d_type == DT_BLK) {
+            char filename[FILENAME_MAX + 1];
+
+            if(de->d_type == DT_LNK) {
+                snprintfz(filename, FILENAME_MAX, "%s/%s", path, de->d_name);
+                ssize_t len = readlink(filename, result, result_size - 1);
+                if(len <= 0) {
+                    error("DEVICE-MAPPER ('%s', %lu:%lu): Cannot read link '%s'.", disk, major, minor, filename);
+                    continue;
+                }
+
+                result[len] = '\0';
+                if(result[0] != '/')
+                    snprintfz(filename, FILENAME_MAX, "%s/%s", path, result);
+                else
+                    strncpyz(filename, result, FILENAME_MAX);
+            }
+            else {
+                snprintfz(filename, FILENAME_MAX, "%s/%s", path, de->d_name);
+            }
+
+            struct stat sb;
+            if(stat(filename, &sb) == -1) {
+                error("DEVICE-MAPPER ('%s', %lu:%lu): Cannot stat() file '%s'.", disk, major, minor, filename);
+                continue;
+            }
+
+            if((sb.st_mode & S_IFMT) != S_IFBLK) {
+                //info("DEVICE-MAPPER ('%s', %lu:%lu): file '%s' is not a block device.", disk, major, minor, filename);
+                continue;
+            }
+
+            if(major(sb.st_rdev) != major || minor(sb.st_rdev) != minor) {
+                //info("DEVICE-MAPPER ('%s', %lu:%lu): filename '%s' does not match %lu:%lu.", disk, major, minor, filename, (unsigned long)major(sb.st_rdev), (unsigned long)minor(sb.st_rdev));
+                continue;
+            }
 
-        // info("DEVICE-MAPPER ('%s', %lu:%lu): filename '%s' matches.", disk, major, minor, filename);
+            //info("DEVICE-MAPPER ('%s', %lu:%lu): filename '%s' matches.", disk, major, minor, filename);
 
-        strncpy(result, de->d_name, result_size);
-        found = 1;
-        break;
+            snprintfz(result, result_size - 1, "%s%s%s", (prefix)?prefix:"", (prefix)?"_":"", de->d_name);
+            found = 1;
+            break;
+        }
     }
     closedir(dir);
 
 
-cleanup:
+failed:
 
     if(!found)
         result[0] = '\0';
@@ -262,10 +410,11 @@ cleanup:
 static inline char *get_disk_name(unsigned long major, unsigned long minor, char *disk) {
     char result[FILENAME_MAX + 1] = "";
 
-    if(!path_to_device_mapper || !*path_to_device_mapper || !get_disk_name_from_path(path_to_device_mapper, result, FILENAME_MAX + 1, major, minor, disk))
-        if(!path_to_device_label || !*path_to_device_label || !get_disk_name_from_path(path_to_device_label, result, FILENAME_MAX + 1, major, minor, disk))
-            if(name_disks_by_id != CONFIG_BOOLEAN_YES || !path_to_device_id || !*path_to_device_id || !get_disk_name_from_path(path_to_device_id, result, FILENAME_MAX + 1, major, minor, disk))
-                strncpy(result, disk, FILENAME_MAX);
+    if(!path_to_device_mapper || !*path_to_device_mapper || !get_disk_name_from_path(path_to_device_mapper, result, FILENAME_MAX + 1, major, minor, disk, NULL, 0))
+        if(!path_to_device_label || !*path_to_device_label || !get_disk_name_from_path(path_to_device_label, result, FILENAME_MAX + 1, major, minor, disk, NULL, 0))
+            if(!path_to_veritas_volume_groups || !*path_to_veritas_volume_groups || !get_disk_name_from_path(path_to_veritas_volume_groups, result, FILENAME_MAX + 1, major, minor, disk, "vx", 2))
+                if(name_disks_by_id != CONFIG_BOOLEAN_YES || !path_to_device_id || !*path_to_device_id || !get_disk_name_from_path(path_to_device_id, result, FILENAME_MAX + 1, major, minor, disk, NULL, 0))
+                    strncpy(result, disk, FILENAME_MAX);
 
     if(!result[0])
         strncpy(result, disk, FILENAME_MAX);
@@ -281,7 +430,7 @@ static void get_disk_config(struct disk *d) {
         def_enable = CONFIG_BOOLEAN_NO;
 
     char var_name[4096 + 1];
-    snprintfz(var_name, 4096, "plugin:proc:/proc/diskstats:%s", d->disk);
+    snprintfz(var_name, 4096, CONFIG_SECTION_PLUGIN_PROC_DISKSTATS ":%s", d->disk);
 
     def_enable = config_get_boolean_ondemand(var_name, "enable", def_enable);
     if(unlikely(def_enable == CONFIG_BOOLEAN_NO)) {
@@ -532,6 +681,24 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis
         else
             error("bcache file '%s' cannot be read.", buffer2);
 
+        snprintfz(buffer2, FILENAME_MAX, "%s/cache/cache0/priority_stats", buffer); // only one cache is supported by bcache
+        if(access(buffer2, R_OK) == 0)
+            d->bcache_filename_priority_stats = strdupz(buffer2);
+        else
+            error("bcache file '%s' cannot be read.", buffer2);
+
+        snprintfz(buffer2, FILENAME_MAX, "%s/cache/internal/cache_read_races", buffer);
+        if(access(buffer2, R_OK) == 0)
+            d->bcache_filename_cache_read_races = strdupz(buffer2);
+        else
+            error("bcache file '%s' cannot be read.", buffer2);
+
+        snprintfz(buffer2, FILENAME_MAX, "%s/cache/cache0/io_errors", buffer);
+        if(access(buffer2, R_OK) == 0)
+            d->bcache_filename_cache_io_errors = strdupz(buffer2);
+        else
+            error("bcache file '%s' cannot be read.", buffer2);
+
         snprintfz(buffer2, FILENAME_MAX, "%s/dirty_data", buffer);
         if(access(buffer2, R_OK) == 0)
             d->bcache_filename_dirty_data = strdupz(buffer2);
@@ -615,55 +782,59 @@ int do_proc_diskstats(int update_every, usec_t dt) {
     if(unlikely(!globals_initialized)) {
         globals_initialized = 1;
 
-        global_enable_new_disks_detected_at_runtime = config_get_boolean(CONFIG_SECTION_DISKSTATS, "enable new disks detected at runtime", global_enable_new_disks_detected_at_runtime);
-        global_enable_performance_for_physical_disks = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "performance metrics for physical disks", global_enable_performance_for_physical_disks);
-        global_enable_performance_for_virtual_disks = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "performance metrics for virtual disks", global_enable_performance_for_virtual_disks);
-        global_enable_performance_for_partitions = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "performance metrics for partitions", global_enable_performance_for_partitions);
-
-        global_do_io      = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "bandwidth for all disks", global_do_io);
-        global_do_ops     = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "operations for all disks", global_do_ops);
-        global_do_mops    = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "merged operations for all disks", global_do_mops);
-        global_do_iotime  = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "i/o time for all disks", global_do_iotime);
-        global_do_qops    = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "queued operations for all disks", global_do_qops);
-        global_do_util    = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "utilization percentage for all disks", global_do_util);
-        global_do_backlog = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "backlog for all disks", global_do_backlog);
-        global_do_bcache  = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "bcache for all disks", global_do_bcache);
-
-        global_cleanup_removed_disks = config_get_boolean(CONFIG_SECTION_DISKSTATS, "remove charts of removed disks" , global_cleanup_removed_disks);
+        global_enable_new_disks_detected_at_runtime = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "enable new disks detected at runtime", global_enable_new_disks_detected_at_runtime);
+        global_enable_performance_for_physical_disks = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "performance metrics for physical disks", global_enable_performance_for_physical_disks);
+        global_enable_performance_for_virtual_disks = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "performance metrics for virtual disks", global_enable_performance_for_virtual_disks);
+        global_enable_performance_for_partitions = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "performance metrics for partitions", global_enable_performance_for_partitions);
+
+        global_do_io      = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "bandwidth for all disks", global_do_io);
+        global_do_ops     = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "operations for all disks", global_do_ops);
+        global_do_mops    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "merged operations for all disks", global_do_mops);
+        global_do_iotime  = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "i/o time for all disks", global_do_iotime);
+        global_do_qops    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "queued operations for all disks", global_do_qops);
+        global_do_util    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "utilization percentage for all disks", global_do_util);
+        global_do_backlog = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "backlog for all disks", global_do_backlog);
+        global_do_bcache  = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "bcache for all disks", global_do_bcache);
+        global_bcache_priority_stats_update_every = (int)config_get_number(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "bcache priority stats update every", global_bcache_priority_stats_update_every);
+
+        global_cleanup_removed_disks = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "remove charts of removed disks" , global_cleanup_removed_disks);
         
         char buffer[FILENAME_MAX + 1];
 
         snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/block/%s");
-        path_to_sys_block_device = config_get(CONFIG_SECTION_DISKSTATS, "path to get block device", buffer);
+        path_to_sys_block_device = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get block device", buffer);
 
         snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/block/%s/bcache");
-        path_to_sys_block_device_bcache = config_get(CONFIG_SECTION_DISKSTATS, "path to get block device bcache", buffer);
+        path_to_sys_block_device_bcache = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get block device bcache", buffer);
 
         snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/virtual/block/%s");
-        path_to_sys_devices_virtual_block_device = config_get(CONFIG_SECTION_DISKSTATS, "path to get virtual block device", buffer);
+        path_to_sys_devices_virtual_block_device = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get virtual block device", buffer);
 
         snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/dev/block/%lu:%lu/%s");
-        path_to_sys_dev_block_major_minor_string = config_get(CONFIG_SECTION_DISKSTATS, "path to get block device infos", buffer);
+        path_to_sys_dev_block_major_minor_string = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get block device infos", buffer);
 
         //snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/block/%s/queue/hw_sector_size");
-        //path_to_get_hw_sector_size = config_get(CONFIG_SECTION_DISKSTATS, "path to get h/w sector size", buffer);
+        //path_to_get_hw_sector_size = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get h/w sector size", buffer);
 
         //snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/dev/block/%lu:%lu/subsystem/%s/../queue/hw_sector_size");
-        //path_to_get_hw_sector_size_partitions = config_get(CONFIG_SECTION_DISKSTATS, "path to get h/w sector size for partitions", buffer);
+        //path_to_get_hw_sector_size_partitions = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get h/w sector size for partitions", buffer);
 
         snprintfz(buffer, FILENAME_MAX, "%s/dev/mapper", netdata_configured_host_prefix);
-        path_to_device_mapper = config_get(CONFIG_SECTION_DISKSTATS, "path to device mapper", buffer);
+        path_to_device_mapper = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to device mapper", buffer);
 
         snprintfz(buffer, FILENAME_MAX, "%s/dev/disk/by-label", netdata_configured_host_prefix);
-        path_to_device_label = config_get(CONFIG_SECTION_DISKSTATS, "path to /dev/disk/by-label", buffer);
+        path_to_device_label = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to /dev/disk/by-label", buffer);
 
         snprintfz(buffer, FILENAME_MAX, "%s/dev/disk/by-id", netdata_configured_host_prefix);
-        path_to_device_id = config_get(CONFIG_SECTION_DISKSTATS, "path to /dev/disk/by-id", buffer);
+        path_to_device_id = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to /dev/disk/by-id", buffer);
 
-        name_disks_by_id = config_get_boolean(CONFIG_SECTION_DISKSTATS, "name disks by id", name_disks_by_id);
+        snprintfz(buffer, FILENAME_MAX, "%s/dev/vx/dsk", netdata_configured_host_prefix);
+        path_to_veritas_volume_groups = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to /dev/vx/dsk", buffer);
+
+        name_disks_by_id = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "name disks by id", name_disks_by_id);
 
         excluded_disks = simple_pattern_create(
-                config_get(CONFIG_SECTION_DISKSTATS, "exclude disks", DEFAULT_EXCLUDED_DISKS)
+                config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "exclude disks", DEFAULT_EXCLUDED_DISKS)
                 , NULL
                 , SIMPLE_PATTERN_EXACT
         );
@@ -674,7 +845,7 @@ int do_proc_diskstats(int update_every, usec_t dt) {
     if(unlikely(!ff)) {
         char filename[FILENAME_MAX + 1];
         snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/diskstats");
-        ff = procfile_open(config_get(CONFIG_SECTION_DISKSTATS, "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
+        ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
     }
     if(unlikely(!ff)) return 0;
 
@@ -790,9 +961,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                         , "disk.io"
                         , "Disk I/O Bandwidth"
                         , "kilobytes/s"
-                        , "proc"
-                        , "diskstats"
-                        , 2000
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                        , NETDATA_CHART_PRIO_DISK_IO
                         , update_every
                         , RRDSET_TYPE_AREA
                 );
@@ -821,9 +992,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                         , "disk.ops"
                         , "Disk Completed I/O Operations"
                         , "operations/s"
-                        , "proc"
-                        , "diskstats"
-                        , 2001
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                        , NETDATA_CHART_PRIO_DISK_OPS
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -854,9 +1025,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                         , "disk.qops"
                         , "Disk Current I/O Operations"
                         , "operations"
-                        , "proc"
-                        , "diskstats"
-                        , 2002
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                        , NETDATA_CHART_PRIO_DISK_QOPS
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -885,9 +1056,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                         , "disk.backlog"
                         , "Disk Backlog"
                         , "backlog (ms)"
-                        , "proc"
-                        , "diskstats"
-                        , 2003
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                        , NETDATA_CHART_PRIO_DISK_BACKLOG
                         , update_every
                         , RRDSET_TYPE_AREA
                 );
@@ -916,9 +1087,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                         , "disk.util"
                         , "Disk Utilization Time"
                         , "% of time working"
-                        , "proc"
-                        , "diskstats"
-                        , 2004
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                        , NETDATA_CHART_PRIO_DISK_UTIL
                         , update_every
                         , RRDSET_TYPE_AREA
                 );
@@ -947,9 +1118,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                         , "disk.mops"
                         , "Disk Merged Operations"
                         , "merged operations/s"
-                        , "proc"
-                        , "diskstats"
-                        , 2021
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                        , NETDATA_CHART_PRIO_DISK_MOPS
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -980,9 +1151,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                         , "disk.iotime"
                         , "Disk Total I/O Time"
                         , "milliseconds/s"
-                        , "proc"
-                        , "diskstats"
-                        , 2022
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                        , NETDATA_CHART_PRIO_DISK_IOTIME
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -1016,9 +1187,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                             , "disk.await"
                             , "Average Completed I/O Operation Time"
                             , "ms per operation"
-                            , "proc"
-                            , "diskstats"
-                            , 2005
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                            , NETDATA_CHART_PRIO_DISK_AWAIT
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -1047,9 +1218,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                             , "disk.avgsz"
                             , "Average Completed I/O Operation Bandwidth"
                             , "kilobytes per operation"
-                            , "proc"
-                            , "diskstats"
-                            , 2006
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                            , NETDATA_CHART_PRIO_DISK_AVGSZ
                             , update_every
                             , RRDSET_TYPE_AREA
                     );
@@ -1078,9 +1249,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                             , "disk.svctm"
                             , "Average Service Time"
                             , "ms per operation"
-                            , "proc"
-                            , "diskstats"
-                            , 2007
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                            , NETDATA_CHART_PRIO_DISK_SVCTM
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -1112,6 +1283,8 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                     stats_total_cache_hit_ratio = 0,
                     cache_available_percent = 0,
                     cache_readaheads = 0,
+                    cache_read_races = 0,
+                    cache_io_errors = 0,
                     cache_congested = 0,
                     dirty_data = 0,
                     writeback_rate = 0;
@@ -1160,11 +1333,18 @@ int do_proc_diskstats(int update_every, usec_t dt) {
             if(d->bcache_filename_stats_total_cache_readaheads)
                 cache_readaheads = bcache_read_number_with_units(d->bcache_filename_stats_total_cache_readaheads);
 
+            if(d->bcache_filename_cache_read_races)
+                read_single_number_file(d->bcache_filename_cache_read_races, &cache_read_races);
+
+            if(d->bcache_filename_cache_io_errors)
+                read_single_number_file(d->bcache_filename_cache_io_errors, &cache_io_errors);
+
+            if(d->bcache_filename_priority_stats && global_bcache_priority_stats_update_every >= 1)
+                bcache_read_priority_stats(d, family, global_bcache_priority_stats_update_every, dt);
 
             // update the charts
 
             {
-
                 if(unlikely(!d->st_bcache_hit_ratio)) {
                     d->st_bcache_hit_ratio = rrdset_create_localhost(
                             "disk_bcache_hit_ratio"
@@ -1174,9 +1354,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                             , "disk.bcache_hit_ratio"
                             , "BCache Cache Hit Ratio"
                             , "percentage"
-                            , "proc"
-                            , "diskstats"
-                            , 2120
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                            , NETDATA_CHART_PRIO_BCACHE_HIT_RATIO
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -1206,9 +1386,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                             , "disk.bcache_rates"
                             , "BCache Rates"
                             , "KB/s"
-                            , "proc"
-                            , "diskstats"
-                            , 2121
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                            , NETDATA_CHART_PRIO_BCACHE_RATES
                             , update_every
                             , RRDSET_TYPE_AREA
                     );
@@ -1233,9 +1413,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                             , "disk.bcache_size"
                             , "BCache Cache Sizes"
                             , "MB"
-                            , "proc"
-                            , "diskstats"
-                            , 2122
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                            , NETDATA_CHART_PRIO_BCACHE_SIZE
                             , update_every
                             , RRDSET_TYPE_AREA
                     );
@@ -1258,9 +1438,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                             , "disk.bcache_usage"
                             , "BCache Cache Usage"
                             , "percent"
-                            , "proc"
-                            , "diskstats"
-                            , 2123
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                            , NETDATA_CHART_PRIO_BCACHE_USAGE
                             , update_every
                             , RRDSET_TYPE_AREA
                     );
@@ -1273,6 +1453,34 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                 rrdset_done(d->st_bcache_usage);
             }
 
+            {
+
+                if(unlikely(!d->st_bcache_cache_read_races)) {
+                    d->st_bcache_cache_read_races = rrdset_create_localhost(
+                            "disk_bcache_cache_read_races"
+                            , d->device
+                            , d->disk
+                            , family
+                            , "disk.bcache_cache_read_races"
+                            , "BCache Cache Read Races"
+                            , "operations/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                            , NETDATA_CHART_PRIO_BCACHE_CACHE_READ_RACES
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    d->rd_bcache_cache_read_races = rrddim_add(d->st_bcache_cache_read_races, "races",  NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    d->rd_bcache_cache_io_errors  = rrddim_add(d->st_bcache_cache_read_races, "errors", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else rrdset_next(d->st_bcache_cache_read_races);
+
+                rrddim_set_by_pointer(d->st_bcache_cache_read_races, d->rd_bcache_cache_read_races, cache_read_races);
+                rrddim_set_by_pointer(d->st_bcache_cache_read_races, d->rd_bcache_cache_io_errors, cache_io_errors);
+                rrdset_done(d->st_bcache_cache_read_races);
+            }
+
             if(d->do_bcache == CONFIG_BOOLEAN_YES || (d->do_bcache == CONFIG_BOOLEAN_AUTO && (stats_total_cache_hits != 0 || stats_total_cache_misses != 0 || stats_total_cache_miss_collisions != 0))) {
 
                 if(unlikely(!d->st_bcache)) {
@@ -1284,9 +1492,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                             , "disk.bcache"
                             , "BCache Cache I/O Operations"
                             , "operations/s"
-                            , "proc"
-                            , "diskstats"
-                            , 2124
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                            , NETDATA_CHART_PRIO_BCACHE_OPS
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -1318,9 +1526,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                             , "disk.bcache_bypass"
                             , "BCache Cache Bypass I/O Operations"
                             , "operations/s"
-                            , "proc"
-                            , "diskstats"
-                            , 2125
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                            , NETDATA_CHART_PRIO_BCACHE_BYPASS
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -1356,9 +1564,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
                     , NULL
                     , "Disk I/O"
                     , "kilobytes/s"
-                    , "proc"
-                    , "diskstats"
-                    , 150
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+                    , NETDATA_CHART_PRIO_SYSTEM_IO
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -1421,6 +1629,9 @@ int do_proc_diskstats(int update_every, usec_t dt) {
             freez(t->bcache_filename_stats_total_cache_bypass_hits);
             freez(t->bcache_filename_stats_total_cache_bypass_misses);
             freez(t->bcache_filename_stats_total_cache_readaheads);
+            freez(t->bcache_filename_cache_read_races);
+            freez(t->bcache_filename_cache_io_errors);
+            freez(t->bcache_filename_priority_stats);
 
             freez(t->disk);
             freez(t->device);
diff --git a/src/proc_interrupts.c b/collectors/proc.plugin/proc_interrupts.c
index 867f39eb2..73b117179 100644
--- a/src/proc_interrupts.c
+++ b/collectors/proc.plugin/proc_interrupts.c
@@ -1,4 +1,9 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_INTERRUPTS_NAME "/proc/interrupts"
+#define CONFIG_SECTION_PLUGIN_PROC_INTERRUPTS "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_INTERRUPTS_NAME
 
 #define MAX_INTERRUPT_NAME 50
 
@@ -51,16 +56,16 @@ static inline struct interrupt *get_interrupts_array(size_t lines, int cpus) {
 int do_proc_interrupts(int update_every, usec_t dt) {
     (void)dt;
     static procfile *ff = NULL;
-    static int cpus = -1, do_per_core = -1;
+    static int cpus = -1, do_per_core = CONFIG_BOOLEAN_INVALID;
     struct interrupt *irrs = NULL;
 
-    if(unlikely(do_per_core == -1))
-        do_per_core = config_get_boolean("plugin:proc:/proc/interrupts", "interrupts per core", 1);
+    if(unlikely(do_per_core == CONFIG_BOOLEAN_INVALID))
+        do_per_core = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_INTERRUPTS, "interrupts per core", CONFIG_BOOLEAN_AUTO);
 
     if(unlikely(!ff)) {
         char filename[FILENAME_MAX + 1];
         snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/interrupts");
-        ff = procfile_open(config_get("plugin:proc:/proc/interrupts", "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
+        ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_INTERRUPTS, "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
     }
     if(unlikely(!ff))
         return 1;
@@ -109,8 +114,8 @@ int do_proc_interrupts(int update_every, usec_t dt) {
         if(unlikely(!irr->id || !irr->id[0])) continue;
 
         size_t idlen = strlen(irr->id);
-        if(unlikely(idlen && irr->id[idlen - 1] == ':'))
-            irr->id[idlen - 1] = '\0';
+        if(irr->id[idlen - 1] == ':')
+            irr->id[--idlen] = '\0';
 
         int c;
         for(c = 0; c < cpus ;c++) {
@@ -125,7 +130,6 @@ int do_proc_interrupts(int update_every, usec_t dt) {
         if(unlikely(isdigit(irr->id[0]) && (uint32_t)(cpus + 2) < words)) {
             strncpyz(irr->name, procfile_lineword(ff, l, words - 1), MAX_INTERRUPT_NAME);
             size_t nlen = strlen(irr->name);
-            idlen = strlen(irr->id);
             if(likely(nlen + 1 + idlen <= MAX_INTERRUPT_NAME)) {
                 irr->name[nlen] = '_';
                 strncpyz(&irr->name[nlen + 1], irr->id, MAX_INTERRUPT_NAME - nlen - 1);
@@ -154,9 +158,9 @@ int do_proc_interrupts(int update_every, usec_t dt) {
                 , NULL
                 , "System interrupts"
                 , "interrupts/s"
-                , "proc"
-                , "interrupts"
-                , 1000
+                , PLUGIN_PROC_NAME
+                , PLUGIN_PROC_MODULE_INTERRUPTS_NAME
+                , NETDATA_CHART_PRIO_SYSTEM_INTERRUPTS
                 , update_every
                 , RRDSET_TYPE_STACKED
         );
@@ -165,34 +169,30 @@ int do_proc_interrupts(int update_every, usec_t dt) {
 
     for(l = 0; l < lines ;l++) {
         struct interrupt *irr = irrindex(irrs, l, cpus);
-        if(unlikely(!irr->used)) continue;
-
-        // some interrupt may have changed without changing the total number of lines
-        // if the same number of interrupts have been added and removed between two
-        // calls of this function.
-        if(unlikely(!irr->rd || strncmp(irr->rd->name, irr->name, MAX_INTERRUPT_NAME) != 0)) {
-            irr->rd = rrddim_find(st_system_interrupts, irr->id);
-
-            if(unlikely(!irr->rd))
+        if(irr->used && irr->total) {
+            // some interrupt may have changed without changing the total number of lines
+            // if the same number of interrupts have been added and removed between two
+            // calls of this function.
+            if(unlikely(!irr->rd || strncmp(irr->rd->name, irr->name, MAX_INTERRUPT_NAME) != 0)) {
                 irr->rd = rrddim_add(st_system_interrupts, irr->id, irr->name, 1, 1, RRD_ALGORITHM_INCREMENTAL);
-            else
                 rrddim_set_name(st_system_interrupts, irr->rd, irr->name);
 
-            // also reset per cpu RRDDIMs to avoid repeating strncmp() in the per core loop
-            if(likely(do_per_core)) {
-                int c;
-                for (c = 0; c < cpus ;c++) irr->cpu[c].rd = NULL;
+                // also reset per cpu RRDDIMs to avoid repeating strncmp() in the per core loop
+                if(likely(do_per_core != CONFIG_BOOLEAN_NO)) {
+                    int c;
+                    for(c = 0; c < cpus; c++) irr->cpu[c].rd = NULL;
+                }
             }
-        }
 
-        rrddim_set_by_pointer(st_system_interrupts, irr->rd, irr->total);
+            rrddim_set_by_pointer(st_system_interrupts, irr->rd, irr->total);
+        }
     }
 
     rrdset_done(st_system_interrupts);
 
     // --------------------------------------------------------------------
 
-    if(likely(do_per_core)) {
+    if(likely(do_per_core != CONFIG_BOOLEAN_NO)) {
         static RRDSET **core_st = NULL;
         static int old_cpus = 0;
 
@@ -219,9 +219,9 @@ int do_proc_interrupts(int update_every, usec_t dt) {
                         , "cpu.interrupts"
                         , title
                         , "interrupts/s"
-                        , "proc"
-                        , "interrupts"
-                        , 1100 + c
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_INTERRUPTS_NAME
+                        , NETDATA_CHART_PRIO_INTERRUPTS_PER_CORE + c
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -230,19 +230,14 @@ int do_proc_interrupts(int update_every, usec_t dt) {
 
             for(l = 0; l < lines ;l++) {
                 struct interrupt *irr = irrindex(irrs, l, cpus);
-
-                if(unlikely(!irr->used)) continue;
-
-                if(unlikely(!irr->cpu[c].rd)) {
-                    irr->cpu[c].rd = rrddim_find(core_st[c], irr->id);
-
-                    if(unlikely(!irr->cpu[c].rd))
+                if(irr->used && (do_per_core == CONFIG_BOOLEAN_YES || irr->cpu[c].value)) {
+                    if(unlikely(!irr->cpu[c].rd)) {
                         irr->cpu[c].rd = rrddim_add(core_st[c], irr->id, irr->name, 1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    else
                         rrddim_set_name(core_st[c], irr->cpu[c].rd, irr->name);
-                }
+                    }
 
-                rrddim_set_by_pointer(core_st[c], irr->cpu[c].rd, irr->cpu[c].value);
+                    rrddim_set_by_pointer(core_st[c], irr->cpu[c].rd, irr->cpu[c].value);
+                }
             }
 
             rrdset_done(core_st[c]);
diff --git a/src/proc_loadavg.c b/collectors/proc.plugin/proc_loadavg.c
index 868f7d50a..db95b1689 100644
--- a/src/proc_loadavg.c
+++ b/collectors/proc.plugin/proc_loadavg.c
@@ -1,4 +1,9 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_LOADAVG_NAME "/proc/loadavg"
+#define CONFIG_SECTION_PLUGIN_PROC_LOADAVG "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_LOADAVG_NAME
 
 // linux calculates this once every 5 seconds
 #define MIN_LOADAVG_UPDATE_EVERY 5
@@ -12,7 +17,7 @@ int do_proc_loadavg(int update_every, usec_t dt) {
         char filename[FILENAME_MAX + 1];
         snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/loadavg");
 
-        ff = procfile_open(config_get("plugin:proc:/proc/loadavg", "filename to monitor", filename), " \t,:|/", PROCFILE_FLAG_DEFAULT);
+        ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_LOADAVG, "filename to monitor", filename), " \t,:|/", PROCFILE_FLAG_DEFAULT);
         if(unlikely(!ff))
             return 1;
     }
@@ -22,8 +27,8 @@ int do_proc_loadavg(int update_every, usec_t dt) {
         return 0; // we return 0, so that we will retry to open it next time
 
     if(unlikely(do_loadavg == -1)) {
-        do_loadavg          = config_get_boolean("plugin:proc:/proc/loadavg", "enable load average", 1);
-        do_all_processes    = config_get_boolean("plugin:proc:/proc/loadavg", "enable total processes", 1);
+        do_loadavg          = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_LOADAVG, "enable load average", 1);
+        do_all_processes    = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_LOADAVG, "enable total processes", 1);
     }
 
     if(unlikely(procfile_lines(ff) < 1)) {
@@ -60,9 +65,9 @@ int do_proc_loadavg(int update_every, usec_t dt) {
                         , NULL
                         , "System Load Average"
                         , "load"
-                        , "proc"
-                        , "loadavg"
-                        , 100
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_LOADAVG_NAME
+                        , NETDATA_CHART_PRIO_SYSTEM_LOAD
                         , (update_every < MIN_LOADAVG_UPDATE_EVERY) ? MIN_LOADAVG_UPDATE_EVERY : update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -100,9 +105,9 @@ int do_proc_loadavg(int update_every, usec_t dt) {
                     , NULL
                     , "System Active Processes"
                     , "processes"
-                    , "proc"
-                    , "loadavg"
-                    , 750
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_LOADAVG_NAME
+                    , NETDATA_CHART_PRIO_SYSTEM_ACTIVE_PROCESSES
                     , update_every
                     , RRDSET_TYPE_LINE
             );
diff --git a/src/proc_meminfo.c b/collectors/proc.plugin/proc_meminfo.c
index 3915bf0e9..f77159ebd 100644
--- a/src/proc_meminfo.c
+++ b/collectors/proc.plugin/proc_meminfo.c
@@ -1,4 +1,9 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_MEMINFO_NAME "/proc/meminfo"
+#define CONFIG_SECTION_PLUGIN_PROC_MEMINFO "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_MEMINFO_NAME
 
 int do_proc_meminfo(int update_every, usec_t dt) {
     (void)dt;
@@ -56,15 +61,15 @@ int do_proc_meminfo(int update_every, usec_t dt) {
             HardwareCorrupted = 0;
 
     if(unlikely(!arl_base)) {
-        do_ram          = config_get_boolean("plugin:proc:/proc/meminfo", "system ram", 1);
-        do_swap         = config_get_boolean_ondemand("plugin:proc:/proc/meminfo", "system swap", CONFIG_BOOLEAN_AUTO);
-        do_hwcorrupt    = config_get_boolean_ondemand("plugin:proc:/proc/meminfo", "hardware corrupted ECC", CONFIG_BOOLEAN_AUTO);
-        do_committed    = config_get_boolean("plugin:proc:/proc/meminfo", "committed memory", 1);
-        do_writeback    = config_get_boolean("plugin:proc:/proc/meminfo", "writeback memory", 1);
-        do_kernel       = config_get_boolean("plugin:proc:/proc/meminfo", "kernel memory", 1);
-        do_slab         = config_get_boolean("plugin:proc:/proc/meminfo", "slab memory", 1);
-        do_hugepages    = config_get_boolean_ondemand("plugin:proc:/proc/meminfo", "hugepages", CONFIG_BOOLEAN_AUTO);
-        do_transparent_hugepages = config_get_boolean_ondemand("plugin:proc:/proc/meminfo", "transparent hugepages", CONFIG_BOOLEAN_AUTO);
+        do_ram          = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "system ram", 1);
+        do_swap         = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "system swap", CONFIG_BOOLEAN_AUTO);
+        do_hwcorrupt    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "hardware corrupted ECC", CONFIG_BOOLEAN_AUTO);
+        do_committed    = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "committed memory", 1);
+        do_writeback    = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "writeback memory", 1);
+        do_kernel       = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "kernel memory", 1);
+        do_slab         = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "slab memory", 1);
+        do_hugepages    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "hugepages", CONFIG_BOOLEAN_AUTO);
+        do_transparent_hugepages = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "transparent hugepages", CONFIG_BOOLEAN_AUTO);
 
         arl_base = arl_create("meminfo", NULL, 60);
         arl_expect(arl_base, "MemTotal", &MemTotal);
@@ -116,7 +121,7 @@ int do_proc_meminfo(int update_every, usec_t dt) {
     if(unlikely(!ff)) {
         char filename[FILENAME_MAX + 1];
         snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/meminfo");
-        ff = procfile_open(config_get("plugin:proc:/proc/meminfo", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
+        ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
         if(unlikely(!ff))
             return 1;
     }
@@ -158,9 +163,9 @@ int do_proc_meminfo(int update_every, usec_t dt) {
                         , NULL
                         , "System RAM"
                         , "MB"
-                        , "proc"
-                        , "meminfo"
-                        , 200
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                        , NETDATA_CHART_PRIO_SYSTEM_RAM
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -193,8 +198,8 @@ int do_proc_meminfo(int update_every, usec_t dt) {
                         , NULL
                         , "Available RAM for applications"
                         , "MB"
-                        , "proc"
-                        , "meminfo"
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_MEMINFO_NAME
                         , NETDATA_CHART_PRIO_MEM_SYSTEM_AVAILABLE
                         , update_every
                         , RRDSET_TYPE_AREA
@@ -229,9 +234,9 @@ int do_proc_meminfo(int update_every, usec_t dt) {
                     , NULL
                     , "System Swap"
                     , "MB"
-                    , "proc"
-                    , "meminfo"
-                    , 201
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
+                    , NETDATA_CHART_PRIO_SYSTEM_SWAP
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -266,8 +271,8 @@ int do_proc_meminfo(int update_every, usec_t dt) {
                     , NULL
                     , "Corrupted Memory, detected by ECC"
                     , "MB"
-                    , "proc"
-                    , "meminfo"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
                     , NETDATA_CHART_PRIO_MEM_HW
                     , update_every
                     , RRDSET_TYPE_LINE
@@ -299,8 +304,8 @@ int do_proc_meminfo(int update_every, usec_t dt) {
                     , NULL
                     , "Committed (Allocated) Memory"
                     , "MB"
-                    , "proc"
-                    , "meminfo"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
                     , NETDATA_CHART_PRIO_MEM_SYSTEM_COMMITTED
                     , update_every
                     , RRDSET_TYPE_AREA
@@ -332,8 +337,8 @@ int do_proc_meminfo(int update_every, usec_t dt) {
                     , NULL
                     , "Writeback Memory"
                     , "MB"
-                    , "proc"
-                    , "meminfo"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
                     , NETDATA_CHART_PRIO_MEM_KERNEL
                     , update_every
                     , RRDSET_TYPE_LINE
@@ -372,8 +377,8 @@ int do_proc_meminfo(int update_every, usec_t dt) {
                     , NULL
                     , "Memory Used by Kernel"
                     , "MB"
-                    , "proc"
-                    , "meminfo"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
                     , NETDATA_CHART_PRIO_MEM_KERNEL + 1
                     , update_every
                     , RRDSET_TYPE_STACKED
@@ -411,8 +416,8 @@ int do_proc_meminfo(int update_every, usec_t dt) {
                     , NULL
                     , "Reclaimable Kernel Memory"
                     , "MB"
-                    , "proc"
-                    , "meminfo"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
                     , NETDATA_CHART_PRIO_MEM_SLAB
                     , update_every
                     , RRDSET_TYPE_STACKED
@@ -448,8 +453,8 @@ int do_proc_meminfo(int update_every, usec_t dt) {
                     , NULL
                     , "Dedicated HugePages Memory"
                     , "MB"
-                    , "proc"
-                    , "meminfo"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
                     , NETDATA_CHART_PRIO_MEM_HUGEPAGES + 1
                     , update_every
                     , RRDSET_TYPE_STACKED
@@ -489,8 +494,8 @@ int do_proc_meminfo(int update_every, usec_t dt) {
                     , NULL
                     , "Transparent HugePages Memory"
                     , "MB"
-                    , "proc"
-                    , "meminfo"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_MEMINFO_NAME
                     , NETDATA_CHART_PRIO_MEM_HUGEPAGES
                     , update_every
                     , RRDSET_TYPE_STACKED
diff --git a/src/proc_net_dev.c b/collectors/proc.plugin/proc_net_dev.c
index 341b9e0ca..97cbc060a 100644
--- a/src/proc_net_dev.c
+++ b/collectors/proc.plugin/proc_net_dev.c
@@ -1,4 +1,9 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_NETDEV_NAME "/proc/net/dev"
+#define CONFIG_SECTION_PLUGIN_PROC_NETDEV "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_NETDEV_NAME
 
 // ----------------------------------------------------------------------------
 // netdev list
@@ -61,6 +66,7 @@ static struct netdev {
     kernel_uint_t tcollisions;
     kernel_uint_t tcarrier;
     kernel_uint_t tcompressed;
+    kernel_uint_t speed_max;
 
     // charts
     RRDSET *st_bandwidth;
@@ -296,7 +302,7 @@ static inline void netdev_rename_cgroup(struct netdev *d, struct netdev_rename *
     snprintfz(buffer, RRD_ID_LENGTH_MAX, "net %s", r->container_device);
     d->chart_family = strdupz(buffer);
 
-    d->priority = 43000;
+    d->priority = NETDATA_CHART_PRIO_CGROUP_NET_IFACE;
     d->flipped = 1;
 }
 
@@ -405,7 +411,7 @@ static struct netdev *get_netdev(const char *name) {
     d->chart_id_net_packets    = strdupz(d->name);
 
     d->chart_family = strdupz(d->name);
-    d->priority = 7000;
+    d->priority = NETDATA_CHART_PRIO_FIRST_NET_IFACE;
 
     netdev_rename_lock(d);
 
@@ -430,30 +436,31 @@ int do_proc_net_dev(int update_every, usec_t dt) {
     static int enable_new_interfaces = -1;
     static int do_bandwidth = -1, do_packets = -1, do_errors = -1, do_drops = -1, do_fifo = -1, do_compressed = -1, do_events = -1;
     static char *path_to_sys_devices_virtual_net = NULL;
+    static char *path_to_sys_net_speed = NULL;
 
     if(unlikely(enable_new_interfaces == -1)) {
         char filename[FILENAME_MAX + 1];
 
         snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/virtual/net/%s");
-        path_to_sys_devices_virtual_net = config_get("plugin:proc:/proc/net/dev", "path to get virtual interfaces", filename);
+        path_to_sys_devices_virtual_net = config_get(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "path to get virtual interfaces", filename);
 
-        enable_new_interfaces = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "enable new interfaces detected at runtime", CONFIG_BOOLEAN_AUTO);
+        enable_new_interfaces = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "enable new interfaces detected at runtime", CONFIG_BOOLEAN_AUTO);
 
-        do_bandwidth    = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "bandwidth for all interfaces", CONFIG_BOOLEAN_AUTO);
-        do_packets      = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "packets for all interfaces", CONFIG_BOOLEAN_AUTO);
-        do_errors       = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "errors for all interfaces", CONFIG_BOOLEAN_AUTO);
-        do_drops        = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "drops for all interfaces", CONFIG_BOOLEAN_AUTO);
-        do_fifo         = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "fifo for all interfaces", CONFIG_BOOLEAN_AUTO);
-        do_compressed   = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "compressed packets for all interfaces", CONFIG_BOOLEAN_AUTO);
-        do_events       = config_get_boolean_ondemand("plugin:proc:/proc/net/dev", "frames, collisions, carrier counters for all interfaces", CONFIG_BOOLEAN_AUTO);
+        do_bandwidth    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "bandwidth for all interfaces", CONFIG_BOOLEAN_AUTO);
+        do_packets      = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "packets for all interfaces", CONFIG_BOOLEAN_AUTO);
+        do_errors       = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "errors for all interfaces", CONFIG_BOOLEAN_AUTO);
+        do_drops        = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "drops for all interfaces", CONFIG_BOOLEAN_AUTO);
+        do_fifo         = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "fifo for all interfaces", CONFIG_BOOLEAN_AUTO);
+        do_compressed   = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "compressed packets for all interfaces", CONFIG_BOOLEAN_AUTO);
+        do_events       = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "frames, collisions, carrier counters for all interfaces", CONFIG_BOOLEAN_AUTO);
 
-        disabled_list = simple_pattern_create(config_get("plugin:proc:/proc/net/dev", "disable by default interfaces matching", "lo fireqos* *-ifb"), NULL, SIMPLE_PATTERN_EXACT);
+        disabled_list = simple_pattern_create(config_get(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "disable by default interfaces matching", "lo fireqos* *-ifb"), NULL, SIMPLE_PATTERN_EXACT);
     }
 
     if(unlikely(!ff)) {
         char filename[FILENAME_MAX + 1];
-        snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/net/dev");
-        ff = procfile_open(config_get("plugin:proc:/proc/net/dev", "filename to monitor", filename), " \t,:|", PROCFILE_FLAG_DEFAULT);
+        snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, (*netdata_configured_host_prefix)?"/proc/1/net/dev":"/proc/net/dev");
+        ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "filename to monitor", filename), " \t,:|", PROCFILE_FLAG_DEFAULT);
         if(unlikely(!ff)) return 1;
     }
 
@@ -498,6 +505,14 @@ int do_proc_net_dev(int update_every, usec_t dt) {
             else
                 d->virtual = 0;
 
+            // set nic speed if present
+            if(likely(!d->virtual)) {
+              snprintfz(buffer, FILENAME_MAX, "%s/sys/class/net/%s/speed", netdata_configured_host_prefix, d->name);
+              path_to_sys_net_speed = config_get(CONFIG_SECTION_PLUGIN_PROC_NETDEV, "path to get net device speed", buffer);
+              int ret = read_single_number_file(path_to_sys_net_speed, (unsigned long long*)&d->speed_max);
+              if(ret) error("Cannot read '%s'.", path_to_sys_net_speed);
+            }
+
             snprintfz(buffer, FILENAME_MAX, "plugin:proc:/proc/net/dev:%s", d->name);
             d->enabled = config_get_boolean_ondemand(buffer, "enabled", d->enabled);
             d->virtual = config_get_boolean(buffer, "virtual", d->virtual);
@@ -575,13 +590,16 @@ int do_proc_net_dev(int update_every, usec_t dt) {
                         , "net.net"
                         , "Bandwidth"
                         , "kilobits/s"
-                        , "proc"
-                        , "net/dev"
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NETDEV_NAME
                         , d->priority
                         , update_every
                         , RRDSET_TYPE_AREA
                 );
 
+                RRDSETVAR *nic_speed_max = rrdsetvar_custom_chart_variable_create(d->st_bandwidth, "nic_speed_max");
+                if(nic_speed_max) rrdsetvar_custom_chart_variable_set(nic_speed_max, (calculated_number)d->speed_max);
+
                 d->rd_rbytes = rrddim_add(d->st_bandwidth, "received", NULL,  8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
                 d->rd_tbytes = rrddim_add(d->st_bandwidth, "sent",     NULL, -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
 
@@ -616,8 +634,8 @@ int do_proc_net_dev(int update_every, usec_t dt) {
                         , "net.packets"
                         , "Packets"
                         , "packets/s"
-                        , "proc"
-                        , "net/dev"
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NETDEV_NAME
                         , d->priority + 1
                         , update_every
                         , RRDSET_TYPE_LINE
@@ -661,8 +679,8 @@ int do_proc_net_dev(int update_every, usec_t dt) {
                         , "net.errors"
                         , "Interface Errors"
                         , "errors/s"
-                        , "proc"
-                        , "net/dev"
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NETDEV_NAME
                         , d->priority + 2
                         , update_every
                         , RRDSET_TYPE_LINE
@@ -704,8 +722,8 @@ int do_proc_net_dev(int update_every, usec_t dt) {
                         , "net.drops"
                         , "Interface Drops"
                         , "drops/s"
-                        , "proc"
-                        , "net/dev"
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NETDEV_NAME
                         , d->priority + 3
                         , update_every
                         , RRDSET_TYPE_LINE
@@ -747,8 +765,8 @@ int do_proc_net_dev(int update_every, usec_t dt) {
                         , "net.fifo"
                         , "Interface FIFO Buffer Errors"
                         , "errors"
-                        , "proc"
-                        , "net/dev"
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NETDEV_NAME
                         , d->priority + 4
                         , update_every
                         , RRDSET_TYPE_LINE
@@ -790,8 +808,8 @@ int do_proc_net_dev(int update_every, usec_t dt) {
                         , "net.compressed"
                         , "Compressed Packets"
                         , "packets/s"
-                        , "proc"
-                        , "net/dev"
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NETDEV_NAME
                         , d->priority + 5
                         , update_every
                         , RRDSET_TYPE_LINE
@@ -833,8 +851,8 @@ int do_proc_net_dev(int update_every, usec_t dt) {
                         , "net.events"
                         , "Network Interface Events"
                         , "events/s"
-                        , "proc"
-                        , "net/dev"
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NETDEV_NAME
                         , d->priority + 6
                         , update_every
                         , RRDSET_TYPE_LINE
@@ -869,9 +887,9 @@ int do_proc_net_dev(int update_every, usec_t dt) {
                     , NULL
                     , "Physical Network Interfaces Aggregated Bandwidth"
                     , "kilobits/s"
-                    , "proc"
-                    , "net/dev"
-                    , 500
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NETDEV_NAME
+                    , NETDATA_CHART_PRIO_SYSTEM_NET
                     , update_every
                     , RRDSET_TYPE_AREA
             );
diff --git a/src/proc_net_ip_vs_stats.c b/collectors/proc.plugin/proc_net_ip_vs_stats.c
index d76972f3c..43dcf2a88 100644
--- a/src/proc_net_ip_vs_stats.c
+++ b/collectors/proc.plugin/proc_net_ip_vs_stats.c
@@ -1,20 +1,24 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
 
-#define RRD_TYPE_NET_IPVS           "ipvs"
+#include "plugin_proc.h"
+
+#define RRD_TYPE_NET_IPVS "ipvs"
+#define PLUGIN_PROC_MODULE_NET_IPVS_NAME "/proc/net/ip_vs_stats"
+#define CONFIG_SECTION_PLUGIN_PROC_NET_IPVS "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_NET_IPVS_NAME
 
 int do_proc_net_ip_vs_stats(int update_every, usec_t dt) {
     (void)dt;
     static int do_bandwidth = -1, do_sockets = -1, do_packets = -1;
     static procfile *ff = NULL;
 
-    if(do_bandwidth == -1)  do_bandwidth    = config_get_boolean("plugin:proc:/proc/net/ip_vs_stats", "IPVS bandwidth", 1);
-    if(do_sockets == -1)    do_sockets      = config_get_boolean("plugin:proc:/proc/net/ip_vs_stats", "IPVS connections", 1);
-    if(do_packets == -1)    do_packets      = config_get_boolean("plugin:proc:/proc/net/ip_vs_stats", "IPVS packets", 1);
+    if(do_bandwidth == -1)  do_bandwidth    = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_NET_IPVS, "IPVS bandwidth", 1);
+    if(do_sockets == -1)    do_sockets      = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_NET_IPVS, "IPVS connections", 1);
+    if(do_packets == -1)    do_packets      = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_NET_IPVS, "IPVS packets", 1);
 
     if(!ff) {
         char filename[FILENAME_MAX + 1];
         snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/net/ip_vs_stats");
-        ff = procfile_open(config_get("plugin:proc:/proc/net/ip_vs_stats", "filename to monitor", filename), " \t,:|", PROCFILE_FLAG_DEFAULT);
+        ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_NET_IPVS, "filename to monitor", filename), " \t,:|", PROCFILE_FLAG_DEFAULT);
     }
     if(!ff) return 1;
 
@@ -50,9 +54,9 @@ int do_proc_net_ip_vs_stats(int update_every, usec_t dt) {
                     , NULL
                     , "IPVS New Connections"
                     , "connections/s"
-                    , "proc"
-                    , "net/ip_vs_stats"
-                    , 3101
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_IPVS_NAME
+                    , NETDATA_CHART_PRIO_IPVS_SOCKETS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -78,9 +82,9 @@ int do_proc_net_ip_vs_stats(int update_every, usec_t dt) {
                     , NULL
                     , "IPVS Packets"
                     , "packets/s"
-                    , "proc"
-                    , "net/ip_vs_stats"
-                    , 3102
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_IPVS_NAME
+                    , NETDATA_CHART_PRIO_IPVS_PACKETS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -108,9 +112,9 @@ int do_proc_net_ip_vs_stats(int update_every, usec_t dt) {
                     , NULL
                     , "IPVS Bandwidth"
                     , "kilobits/s"
-                    , "proc"
-                    , "net/ip_vs_stats"
-                    , 3100
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_IPVS_NAME
+                    , NETDATA_CHART_PRIO_IPVS_NET
                     , update_every
                     , RRDSET_TYPE_AREA
             );
diff --git a/src/proc_net_netstat.c b/collectors/proc.plugin/proc_net_netstat.c
index dd070e4c3..2dc3c59c0 100644
--- a/src/proc_net_netstat.c
+++ b/collectors/proc.plugin/proc_net_netstat.c
@@ -1,6 +1,12 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
 
-unsigned long long tcpext_TCPSynRetrans;
+#include "plugin_proc.h"
+
+#define RRD_TYPE_NET_NETSTAT "ip"
+#define PLUGIN_PROC_MODULE_NETSTAT_NAME "/proc/net/netstat"
+#define CONFIG_SECTION_PLUGIN_PROC_NETSTAT "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_NETSTAT_NAME
+
+unsigned long long tcpext_TCPSynRetrans = 0;
 
 static void parse_line_pair(procfile *ff, ARL_BASE *base, size_t header_line, size_t values_line) {
     size_t hwords = procfile_linewords(ff, header_line);
@@ -23,7 +29,7 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
 
     static int do_bandwidth = -1, do_inerrors = -1, do_mcast = -1, do_bcast = -1, do_mcast_p = -1, do_bcast_p = -1, do_ecn = -1, \
         do_tcpext_reorder = -1, do_tcpext_syscookies = -1, do_tcpext_ofo = -1, do_tcpext_connaborts = -1, do_tcpext_memory = -1,
-        do_tcpext_listen = -1;
+        do_tcpext_syn_queue = -1, do_tcpext_accept_queue = -1;
 
     static uint32_t hash_ipext = 0, hash_tcpext = 0;
     static procfile *ff = NULL;
@@ -32,61 +38,61 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
     static ARL_BASE *arl_ipext = NULL;
 
     // --------------------------------------------------------------------
-    // IPv4
+    // IP
 
-    // IPv4 bandwidth
+    // IP bandwidth
     static unsigned long long ipext_InOctets = 0;
     static unsigned long long ipext_OutOctets = 0;
 
-    // IPv4 input errors
+    // IP input errors
     static unsigned long long ipext_InNoRoutes = 0;
     static unsigned long long ipext_InTruncatedPkts = 0;
     static unsigned long long ipext_InCsumErrors = 0;
 
-    // IPv4 multicast bandwidth
+    // IP multicast bandwidth
     static unsigned long long ipext_InMcastOctets = 0;
     static unsigned long long ipext_OutMcastOctets = 0;
 
-    // IPv4 multicast packets
+    // IP multicast packets
     static unsigned long long ipext_InMcastPkts = 0;
     static unsigned long long ipext_OutMcastPkts = 0;
 
-    // IPv4 broadcast bandwidth
+    // IP broadcast bandwidth
     static unsigned long long ipext_InBcastOctets = 0;
     static unsigned long long ipext_OutBcastOctets = 0;
 
-    // IPv4 broadcast packets
+    // IP broadcast packets
     static unsigned long long ipext_InBcastPkts = 0;
     static unsigned long long ipext_OutBcastPkts = 0;
 
-    // IPv4 ECN
+    // IP ECN
     static unsigned long long ipext_InNoECTPkts = 0;
     static unsigned long long ipext_InECT1Pkts = 0;
     static unsigned long long ipext_InECT0Pkts = 0;
     static unsigned long long ipext_InCEPkts = 0;
 
     // --------------------------------------------------------------------
-    // IPv4 TCP
+    // IP TCP
 
-    // IPv4 TCP Reordering
+    // IP TCP Reordering
     static unsigned long long tcpext_TCPRenoReorder = 0;
     static unsigned long long tcpext_TCPFACKReorder = 0;
     static unsigned long long tcpext_TCPSACKReorder = 0;
     static unsigned long long tcpext_TCPTSReorder = 0;
 
-    // IPv4 TCP SYN Cookies
+    // IP TCP SYN Cookies
     static unsigned long long tcpext_SyncookiesSent = 0;
     static unsigned long long tcpext_SyncookiesRecv = 0;
     static unsigned long long tcpext_SyncookiesFailed = 0;
 
-    // IPv4 TCP Out Of Order Queue
+    // IP TCP Out Of Order Queue
     // http://www.spinics.net/lists/netdev/msg204696.html
     static unsigned long long tcpext_TCPOFOQueue = 0; // Number of packets queued in OFO queue
     static unsigned long long tcpext_TCPOFODrop = 0;  // Number of packets meant to be queued in OFO but dropped because socket rcvbuf limit hit.
     static unsigned long long tcpext_TCPOFOMerge = 0; // Number of packets in OFO that were merged with other packets.
     static unsigned long long tcpext_OfoPruned = 0;   // packets dropped from out-of-order queue because of socket buffer overrun
 
-    // IPv4 TCP connection resets
+    // IP TCP connection resets
     // https://github.com/ecki/net-tools/blob/bd8bceaed2311651710331a7f8990c3e31be9840/statistics.c
     static unsigned long long tcpext_TCPAbortOnData = 0;    // connections reset due to unexpected data
     static unsigned long long tcpext_TCPAbortOnClose = 0;   // connections reset due to early user close
@@ -99,9 +105,12 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
     static unsigned long long tcpext_ListenOverflows = 0;   // times the listen queue of a socket overflowed
     static unsigned long long tcpext_ListenDrops = 0;       // SYNs to LISTEN sockets ignored
 
-    // IPv4 TCP memory pressures
+    // IP TCP memory pressures
     static unsigned long long tcpext_TCPMemoryPressures = 0;
 
+    static unsigned long long tcpext_TCPReqQFullDrop = 0;
+    static unsigned long long tcpext_TCPReqQFullDoCookies = 0;
+
     // shared: tcpext_TCPSynRetrans
 
 
@@ -109,26 +118,28 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
         hash_ipext = simple_hash("IpExt");
         hash_tcpext = simple_hash("TcpExt");
 
-        do_bandwidth = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "bandwidth", CONFIG_BOOLEAN_AUTO);
-        do_inerrors  = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "input errors", CONFIG_BOOLEAN_AUTO);
-        do_mcast     = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "multicast bandwidth", CONFIG_BOOLEAN_AUTO);
-        do_bcast     = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "broadcast bandwidth", CONFIG_BOOLEAN_AUTO);
-        do_mcast_p   = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "multicast packets", CONFIG_BOOLEAN_AUTO);
-        do_bcast_p   = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "broadcast packets", CONFIG_BOOLEAN_AUTO);
-        do_ecn       = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "ECN packets", CONFIG_BOOLEAN_AUTO);
-
-        do_tcpext_reorder    = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "TCP reorders", CONFIG_BOOLEAN_AUTO);
-        do_tcpext_syscookies = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "TCP SYN cookies", CONFIG_BOOLEAN_AUTO);
-        do_tcpext_ofo        = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "TCP out-of-order queue", CONFIG_BOOLEAN_AUTO);
-        do_tcpext_connaborts = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "TCP connection aborts", CONFIG_BOOLEAN_AUTO);
-        do_tcpext_memory     = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "TCP memory pressures", CONFIG_BOOLEAN_AUTO);
-        do_tcpext_listen     = config_get_boolean_ondemand("plugin:proc:/proc/net/netstat", "TCP listen issues", CONFIG_BOOLEAN_AUTO);
+        do_bandwidth = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "bandwidth", CONFIG_BOOLEAN_AUTO);
+        do_inerrors  = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "input errors", CONFIG_BOOLEAN_AUTO);
+        do_mcast     = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "multicast bandwidth", CONFIG_BOOLEAN_AUTO);
+        do_bcast     = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "broadcast bandwidth", CONFIG_BOOLEAN_AUTO);
+        do_mcast_p   = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "multicast packets", CONFIG_BOOLEAN_AUTO);
+        do_bcast_p   = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "broadcast packets", CONFIG_BOOLEAN_AUTO);
+        do_ecn       = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "ECN packets", CONFIG_BOOLEAN_AUTO);
+
+        do_tcpext_reorder    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP reorders", CONFIG_BOOLEAN_AUTO);
+        do_tcpext_syscookies = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP SYN cookies", CONFIG_BOOLEAN_AUTO);
+        do_tcpext_ofo        = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP out-of-order queue", CONFIG_BOOLEAN_AUTO);
+        do_tcpext_connaborts = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP connection aborts", CONFIG_BOOLEAN_AUTO);
+        do_tcpext_memory     = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP memory pressures", CONFIG_BOOLEAN_AUTO);
+
+        do_tcpext_syn_queue    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP SYN queue", CONFIG_BOOLEAN_AUTO);
+        do_tcpext_accept_queue = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP accept queue", CONFIG_BOOLEAN_AUTO);
 
         arl_ipext  = arl_create("netstat/ipext", NULL, 60);
         arl_tcpext = arl_create("netstat/tcpext", NULL, 60);
 
         // --------------------------------------------------------------------
-        // IPv4
+        // IP
 
         if(do_bandwidth != CONFIG_BOOLEAN_NO) {
             arl_expect(arl_ipext, "InOctets",  &ipext_InOctets);
@@ -169,7 +180,7 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
         }
 
         // --------------------------------------------------------------------
-        // IPv4 TCP
+        // IP TCP
 
         if(do_tcpext_reorder != CONFIG_BOOLEAN_NO) {
             arl_expect(arl_tcpext, "TCPFACKReorder", &tcpext_TCPFACKReorder);
@@ -204,11 +215,16 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
             arl_expect(arl_tcpext, "TCPMemoryPressures", &tcpext_TCPMemoryPressures);
         }
 
-        if(do_tcpext_listen != CONFIG_BOOLEAN_NO) {
+        if(do_tcpext_accept_queue != CONFIG_BOOLEAN_NO) {
             arl_expect(arl_tcpext, "ListenOverflows", &tcpext_ListenOverflows);
             arl_expect(arl_tcpext, "ListenDrops",     &tcpext_ListenDrops);
         }
 
+        if(do_tcpext_syn_queue != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_tcpext, "TCPReqQFullDrop",      &tcpext_TCPReqQFullDrop);
+            arl_expect(arl_tcpext, "TCPReqQFullDoCookies", &tcpext_TCPReqQFullDoCookies);
+        }
+
         // shared metrics
         arl_expect(arl_tcpext, "TCPSynRetrans", &tcpext_TCPSynRetrans);
     }
@@ -216,7 +232,7 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
     if(unlikely(!ff)) {
         char filename[FILENAME_MAX + 1];
         snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/net/netstat");
-        ff = procfile_open(config_get("plugin:proc:/proc/net/netstat", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
+        ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
         if(unlikely(!ff)) return 1;
     }
 
@@ -248,111 +264,111 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
 
             if(do_bandwidth == CONFIG_BOOLEAN_YES || (do_bandwidth == CONFIG_BOOLEAN_AUTO && (ipext_InOctets || ipext_OutOctets))) {
                 do_bandwidth = CONFIG_BOOLEAN_YES;
-                static RRDSET *st_system_ipv4 = NULL;
+                static RRDSET *st_system_ip = NULL;
                 static RRDDIM *rd_in = NULL, *rd_out = NULL;
 
-                if(unlikely(!st_system_ipv4)) {
-                    st_system_ipv4 = rrdset_create_localhost(
+                if(unlikely(!st_system_ip)) {
+                    st_system_ip = rrdset_create_localhost(
                             "system"
-                            , "ipv4"
+                            , RRD_TYPE_NET_NETSTAT
                             , NULL
                             , "network"
                             , NULL
-                            , "IPv4 Bandwidth"
+                            , "IP Bandwidth"
                             , "kilobits/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 501
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_SYSTEM_IP
                             , update_every
                             , RRDSET_TYPE_AREA
                     );
 
-                    rd_in  = rrddim_add(st_system_ipv4, "InOctets",  "received", 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
-                    rd_out = rrddim_add(st_system_ipv4, "OutOctets", "sent",    -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                    rd_in  = rrddim_add(st_system_ip, "InOctets",  "received", 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st_system_ip, "OutOctets", "sent",    -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
                 }
                 else
-                    rrdset_next(st_system_ipv4);
+                    rrdset_next(st_system_ip);
 
-                rrddim_set_by_pointer(st_system_ipv4, rd_in,  ipext_InOctets);
-                rrddim_set_by_pointer(st_system_ipv4, rd_out, ipext_OutOctets);
+                rrddim_set_by_pointer(st_system_ip, rd_in,  ipext_InOctets);
+                rrddim_set_by_pointer(st_system_ip, rd_out, ipext_OutOctets);
 
-                rrdset_done(st_system_ipv4);
+                rrdset_done(st_system_ip);
             }
 
             // --------------------------------------------------------------------
 
             if(do_inerrors == CONFIG_BOOLEAN_YES || (do_inerrors == CONFIG_BOOLEAN_AUTO && (ipext_InNoRoutes || ipext_InTruncatedPkts))) {
                 do_inerrors = CONFIG_BOOLEAN_YES;
-                static RRDSET *st_ipv4_inerrors = NULL;
+                static RRDSET *st_ip_inerrors = NULL;
                 static RRDDIM *rd_noroutes = NULL, *rd_truncated = NULL, *rd_checksum = NULL;
 
-                if(unlikely(!st_ipv4_inerrors)) {
-                    st_ipv4_inerrors = rrdset_create_localhost(
-                            "ipv4"
+                if(unlikely(!st_ip_inerrors)) {
+                    st_ip_inerrors = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
                             , "inerrors"
                             , NULL
                             , "errors"
                             , NULL
-                            , "IPv4 Input Errors"
+                            , "IP Input Errors"
                             , "packets/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 4000
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_ERRORS
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
 
-                    rrdset_flag_set(st_ipv4_inerrors, RRDSET_FLAG_DETAIL);
+                    rrdset_flag_set(st_ip_inerrors, RRDSET_FLAG_DETAIL);
 
-                    rd_noroutes  = rrddim_add(st_ipv4_inerrors, "InNoRoutes",      "noroutes",  1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_truncated = rrddim_add(st_ipv4_inerrors, "InTruncatedPkts", "truncated", 1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_checksum  = rrddim_add(st_ipv4_inerrors, "InCsumErrors",    "checksum",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_noroutes  = rrddim_add(st_ip_inerrors, "InNoRoutes",      "noroutes",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_truncated = rrddim_add(st_ip_inerrors, "InTruncatedPkts", "truncated", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_checksum  = rrddim_add(st_ip_inerrors, "InCsumErrors",    "checksum",  1, 1, RRD_ALGORITHM_INCREMENTAL);
                 }
                 else
-                    rrdset_next(st_ipv4_inerrors);
+                    rrdset_next(st_ip_inerrors);
 
-                rrddim_set_by_pointer(st_ipv4_inerrors, rd_noroutes,  ipext_InNoRoutes);
-                rrddim_set_by_pointer(st_ipv4_inerrors, rd_truncated, ipext_InTruncatedPkts);
-                rrddim_set_by_pointer(st_ipv4_inerrors, rd_checksum,  ipext_InCsumErrors);
+                rrddim_set_by_pointer(st_ip_inerrors, rd_noroutes,  ipext_InNoRoutes);
+                rrddim_set_by_pointer(st_ip_inerrors, rd_truncated, ipext_InTruncatedPkts);
+                rrddim_set_by_pointer(st_ip_inerrors, rd_checksum,  ipext_InCsumErrors);
 
-                rrdset_done(st_ipv4_inerrors);
+                rrdset_done(st_ip_inerrors);
             }
 
             // --------------------------------------------------------------------
 
             if(do_mcast == CONFIG_BOOLEAN_YES || (do_mcast == CONFIG_BOOLEAN_AUTO && (ipext_InMcastOctets || ipext_OutMcastOctets))) {
                 do_mcast = CONFIG_BOOLEAN_YES;
-                static RRDSET *st_ipv4_mcast = NULL;
+                static RRDSET *st_ip_mcast = NULL;
                 static RRDDIM *rd_in = NULL, *rd_out = NULL;
 
-                if(unlikely(!st_ipv4_mcast)) {
-                    st_ipv4_mcast = rrdset_create_localhost(
-                            "ipv4"
+                if(unlikely(!st_ip_mcast)) {
+                    st_ip_mcast = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
                             , "mcast"
                             , NULL
                             , "multicast"
                             , NULL
-                            , "IPv4 Multicast Bandwidth"
+                            , "IP Multicast Bandwidth"
                             , "kilobits/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 9000
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_MCAST
                             , update_every
                             , RRDSET_TYPE_AREA
                     );
 
-                    rrdset_flag_set(st_ipv4_mcast, RRDSET_FLAG_DETAIL);
+                    rrdset_flag_set(st_ip_mcast, RRDSET_FLAG_DETAIL);
 
-                    rd_in  = rrddim_add(st_ipv4_mcast, "InMcastOctets",  "received", 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
-                    rd_out = rrddim_add(st_ipv4_mcast, "OutMcastOctets", "sent",    -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                    rd_in  = rrddim_add(st_ip_mcast, "InMcastOctets",  "received", 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st_ip_mcast, "OutMcastOctets", "sent",    -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
                 }
                 else
-                    rrdset_next(st_ipv4_mcast);
+                    rrdset_next(st_ip_mcast);
 
-                rrddim_set_by_pointer(st_ipv4_mcast, rd_in,  ipext_InMcastOctets);
-                rrddim_set_by_pointer(st_ipv4_mcast, rd_out, ipext_OutMcastOctets);
+                rrddim_set_by_pointer(st_ip_mcast, rd_in,  ipext_InMcastOctets);
+                rrddim_set_by_pointer(st_ip_mcast, rd_out, ipext_OutMcastOctets);
 
-                rrdset_done(st_ipv4_mcast);
+                rrdset_done(st_ip_mcast);
             }
 
             // --------------------------------------------------------------------
@@ -360,37 +376,37 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
             if(do_bcast == CONFIG_BOOLEAN_YES || (do_bcast == CONFIG_BOOLEAN_AUTO && (ipext_InBcastOctets || ipext_OutBcastOctets))) {
                 do_bcast = CONFIG_BOOLEAN_YES;
 
-                static RRDSET *st_ipv4_bcast = NULL;
+                static RRDSET *st_ip_bcast = NULL;
                 static RRDDIM *rd_in = NULL, *rd_out = NULL;
 
-                if(unlikely(!st_ipv4_bcast)) {
-                    st_ipv4_bcast = rrdset_create_localhost(
-                            "ipv4"
+                if(unlikely(!st_ip_bcast)) {
+                    st_ip_bcast = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
                             , "bcast"
                             , NULL
                             , "broadcast"
                             , NULL
-                            , "IPv4 Broadcast Bandwidth"
+                            , "IP Broadcast Bandwidth"
                             , "kilobits/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 8000
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_BCAST
                             , update_every
                             , RRDSET_TYPE_AREA
                     );
 
-                    rrdset_flag_set(st_ipv4_bcast, RRDSET_FLAG_DETAIL);
+                    rrdset_flag_set(st_ip_bcast, RRDSET_FLAG_DETAIL);
 
-                    rd_in  = rrddim_add(st_ipv4_bcast, "InBcastOctets",  "received", 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
-                    rd_out = rrddim_add(st_ipv4_bcast, "OutBcastOctets", "sent",    -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                    rd_in  = rrddim_add(st_ip_bcast, "InBcastOctets",  "received", 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st_ip_bcast, "OutBcastOctets", "sent",    -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
                 }
                 else
-                    rrdset_next(st_ipv4_bcast);
+                    rrdset_next(st_ip_bcast);
 
-                rrddim_set_by_pointer(st_ipv4_bcast, rd_in,  ipext_InBcastOctets);
-                rrddim_set_by_pointer(st_ipv4_bcast, rd_out, ipext_OutBcastOctets);
+                rrddim_set_by_pointer(st_ip_bcast, rd_in,  ipext_InBcastOctets);
+                rrddim_set_by_pointer(st_ip_bcast, rd_out, ipext_OutBcastOctets);
 
-                rrdset_done(st_ipv4_bcast);
+                rrdset_done(st_ip_bcast);
             }
 
             // --------------------------------------------------------------------
@@ -398,36 +414,36 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
             if(do_mcast_p == CONFIG_BOOLEAN_YES || (do_mcast_p == CONFIG_BOOLEAN_AUTO && (ipext_InMcastPkts || ipext_OutMcastPkts))) {
                 do_mcast_p = CONFIG_BOOLEAN_YES;
 
-                static RRDSET *st_ipv4_mcastpkts = NULL;
+                static RRDSET *st_ip_mcastpkts = NULL;
                 static RRDDIM *rd_in = NULL, *rd_out = NULL;
 
-                if(unlikely(!st_ipv4_mcastpkts)) {
-                    st_ipv4_mcastpkts = rrdset_create_localhost(
-                            "ipv4"
+                if(unlikely(!st_ip_mcastpkts)) {
+                    st_ip_mcastpkts = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
                             , "mcastpkts"
                             , NULL
                             , "multicast"
                             , NULL
-                            , "IPv4 Multicast Packets"
+                            , "IP Multicast Packets"
                             , "packets/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 8600
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_MCAST_PACKETS
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
 
-                    rrdset_flag_set(st_ipv4_mcastpkts, RRDSET_FLAG_DETAIL);
+                    rrdset_flag_set(st_ip_mcastpkts, RRDSET_FLAG_DETAIL);
 
-                    rd_in  = rrddim_add(st_ipv4_mcastpkts, "InMcastPkts",  "received", 1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_out = rrddim_add(st_ipv4_mcastpkts, "OutMcastPkts", "sent",    -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_in  = rrddim_add(st_ip_mcastpkts, "InMcastPkts",  "received", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st_ip_mcastpkts, "OutMcastPkts", "sent",    -1, 1, RRD_ALGORITHM_INCREMENTAL);
                 }
-                else rrdset_next(st_ipv4_mcastpkts);
+                else rrdset_next(st_ip_mcastpkts);
 
-                rrddim_set_by_pointer(st_ipv4_mcastpkts, rd_in,  ipext_InMcastPkts);
-                rrddim_set_by_pointer(st_ipv4_mcastpkts, rd_out, ipext_OutMcastPkts);
+                rrddim_set_by_pointer(st_ip_mcastpkts, rd_in,  ipext_InMcastPkts);
+                rrddim_set_by_pointer(st_ip_mcastpkts, rd_out, ipext_OutMcastPkts);
 
-                rrdset_done(st_ipv4_mcastpkts);
+                rrdset_done(st_ip_mcastpkts);
             }
 
             // --------------------------------------------------------------------
@@ -435,37 +451,37 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
             if(do_bcast_p == CONFIG_BOOLEAN_YES || (do_bcast_p == CONFIG_BOOLEAN_AUTO && (ipext_InBcastPkts || ipext_OutBcastPkts))) {
                 do_bcast_p = CONFIG_BOOLEAN_YES;
 
-                static RRDSET *st_ipv4_bcastpkts = NULL;
+                static RRDSET *st_ip_bcastpkts = NULL;
                 static RRDDIM *rd_in = NULL, *rd_out = NULL;
 
-                if(unlikely(!st_ipv4_bcastpkts)) {
-                    st_ipv4_bcastpkts = rrdset_create_localhost(
-                            "ipv4"
+                if(unlikely(!st_ip_bcastpkts)) {
+                    st_ip_bcastpkts = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
                             , "bcastpkts"
                             , NULL
                             , "broadcast"
                             , NULL
-                            , "IPv4 Broadcast Packets"
+                            , "IP Broadcast Packets"
                             , "packets/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 8500
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_BCAST_PACKETS
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
 
-                    rrdset_flag_set(st_ipv4_bcastpkts, RRDSET_FLAG_DETAIL);
+                    rrdset_flag_set(st_ip_bcastpkts, RRDSET_FLAG_DETAIL);
 
-                    rd_in  = rrddim_add(st_ipv4_bcastpkts, "InBcastPkts",  "received", 1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_out = rrddim_add(st_ipv4_bcastpkts, "OutBcastPkts", "sent",    -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_in  = rrddim_add(st_ip_bcastpkts, "InBcastPkts",  "received", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st_ip_bcastpkts, "OutBcastPkts", "sent",    -1, 1, RRD_ALGORITHM_INCREMENTAL);
                 }
                 else
-                    rrdset_next(st_ipv4_bcastpkts);
+                    rrdset_next(st_ip_bcastpkts);
 
-                rrddim_set_by_pointer(st_ipv4_bcastpkts, rd_in,  ipext_InBcastPkts);
-                rrddim_set_by_pointer(st_ipv4_bcastpkts, rd_out, ipext_OutBcastPkts);
+                rrddim_set_by_pointer(st_ip_bcastpkts, rd_in,  ipext_InBcastPkts);
+                rrddim_set_by_pointer(st_ip_bcastpkts, rd_out, ipext_OutBcastPkts);
 
-                rrdset_done(st_ipv4_bcastpkts);
+                rrdset_done(st_ip_bcastpkts);
             }
 
             // --------------------------------------------------------------------
@@ -478,16 +494,16 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
 
                 if(unlikely(!st_ecnpkts)) {
                     st_ecnpkts = rrdset_create_localhost(
-                            "ipv4"
+                            RRD_TYPE_NET_NETSTAT
                             , "ecnpkts"
                             , NULL
                             , "ecn"
                             , NULL
-                            , "IPv4 ECN Statistics"
+                            , "IP ECN Statistics"
                             , "packets/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 8700
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_ECN
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -530,16 +546,16 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
 
                 if(unlikely(!st_tcpmemorypressures)) {
                     st_tcpmemorypressures = rrdset_create_localhost(
-                            "ipv4"
+                            RRD_TYPE_NET_NETSTAT
                             , "tcpmemorypressures"
                             , NULL
                             , "tcp"
                             , NULL
                             , "TCP Memory Pressures"
                             , "events/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 3000
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_MEM
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -564,16 +580,16 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
 
                 if(unlikely(!st_tcpconnaborts)) {
                     st_tcpconnaborts = rrdset_create_localhost(
-                            "ipv4"
+                            RRD_TYPE_NET_NETSTAT
                             , "tcpconnaborts"
                             , NULL
                             , "tcp"
                             , NULL
                             , "TCP Connection Aborts"
                             , "connections/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 3010
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_CONNABORTS
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -608,16 +624,16 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
 
                 if(unlikely(!st_tcpreorders)) {
                     st_tcpreorders = rrdset_create_localhost(
-                            "ipv4"
+                            RRD_TYPE_NET_NETSTAT
                             , "tcpreorders"
                             , NULL
                             , "tcp"
                             , NULL
                             , "TCP Reordered Packets by Detection Method"
                             , "packets/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 3020
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_REORDERS
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -643,40 +659,40 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
             if(do_tcpext_ofo == CONFIG_BOOLEAN_YES || (do_tcpext_ofo == CONFIG_BOOLEAN_AUTO && (tcpext_TCPOFOQueue || tcpext_TCPOFODrop || tcpext_TCPOFOMerge))) {
                 do_tcpext_ofo = CONFIG_BOOLEAN_YES;
 
-                static RRDSET *st_ipv4_tcpofo = NULL;
+                static RRDSET *st_ip_tcpofo = NULL;
                 static RRDDIM *rd_inqueue = NULL, *rd_dropped = NULL, *rd_merged = NULL, *rd_pruned = NULL;
 
-                if(unlikely(!st_ipv4_tcpofo)) {
+                if(unlikely(!st_ip_tcpofo)) {
 
-                    st_ipv4_tcpofo = rrdset_create_localhost(
-                            "ipv4"
+                    st_ip_tcpofo = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
                             , "tcpofo"
                             , NULL
                             , "tcp"
                             , NULL
                             , "TCP Out-Of-Order Queue"
                             , "packets/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 3050
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_OFO
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
 
-                    rd_inqueue = rrddim_add(st_ipv4_tcpofo, "TCPOFOQueue", "inqueue",  1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_dropped = rrddim_add(st_ipv4_tcpofo, "TCPOFODrop",  "dropped", -1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_merged  = rrddim_add(st_ipv4_tcpofo, "TCPOFOMerge", "merged",   1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_pruned  = rrddim_add(st_ipv4_tcpofo, "OfoPruned",   "pruned",  -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_inqueue = rrddim_add(st_ip_tcpofo, "TCPOFOQueue", "inqueue",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_dropped = rrddim_add(st_ip_tcpofo, "TCPOFODrop",  "dropped", -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_merged  = rrddim_add(st_ip_tcpofo, "TCPOFOMerge", "merged",   1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_pruned  = rrddim_add(st_ip_tcpofo, "OfoPruned",   "pruned",  -1, 1, RRD_ALGORITHM_INCREMENTAL);
                 }
                 else
-                    rrdset_next(st_ipv4_tcpofo);
+                    rrdset_next(st_ip_tcpofo);
 
-                rrddim_set_by_pointer(st_ipv4_tcpofo, rd_inqueue, tcpext_TCPOFOQueue);
-                rrddim_set_by_pointer(st_ipv4_tcpofo, rd_dropped, tcpext_TCPOFODrop);
-                rrddim_set_by_pointer(st_ipv4_tcpofo, rd_merged,  tcpext_TCPOFOMerge);
-                rrddim_set_by_pointer(st_ipv4_tcpofo, rd_pruned,  tcpext_OfoPruned);
+                rrddim_set_by_pointer(st_ip_tcpofo, rd_inqueue, tcpext_TCPOFOQueue);
+                rrddim_set_by_pointer(st_ip_tcpofo, rd_dropped, tcpext_TCPOFODrop);
+                rrddim_set_by_pointer(st_ip_tcpofo, rd_merged,  tcpext_TCPOFOMerge);
+                rrddim_set_by_pointer(st_ip_tcpofo, rd_pruned,  tcpext_OfoPruned);
 
-                rrdset_done(st_ipv4_tcpofo);
+                rrdset_done(st_ip_tcpofo);
             }
 
             // --------------------------------------------------------------------
@@ -690,16 +706,16 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
                 if(unlikely(!st_syncookies)) {
 
                     st_syncookies = rrdset_create_localhost(
-                            "ipv4"
+                            RRD_TYPE_NET_NETSTAT
                             , "tcpsyncookies"
                             , NULL
                             , "tcp"
                             , NULL
                             , "TCP SYN Cookies"
                             , "packets/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 3100
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_SYNCOOKIES
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -720,40 +736,81 @@ int do_proc_net_netstat(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_tcpext_listen == CONFIG_BOOLEAN_YES || (do_tcpext_listen == CONFIG_BOOLEAN_AUTO && (tcpext_ListenOverflows || tcpext_ListenDrops))) {
-                do_tcpext_listen = CONFIG_BOOLEAN_YES;
+            if(do_tcpext_syn_queue == CONFIG_BOOLEAN_YES || (do_tcpext_syn_queue == CONFIG_BOOLEAN_AUTO && (tcpext_TCPReqQFullDrop || tcpext_TCPReqQFullDoCookies))) {
+                do_tcpext_syn_queue = CONFIG_BOOLEAN_YES;
 
-                static RRDSET *st_listen = NULL;
-                static RRDDIM *rd_overflows = NULL, *rd_drops = NULL;
+                static RRDSET *st_syn_queue = NULL;
+                static RRDDIM
+                        *rd_TCPReqQFullDrop = NULL,
+                        *rd_TCPReqQFullDoCookies = NULL;
 
-                if(unlikely(!st_listen)) {
+                if(unlikely(!st_syn_queue)) {
 
-                    st_listen = rrdset_create_localhost(
-                            "ipv4"
-                            , "tcplistenissues"
+                    st_syn_queue = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "tcp_syn_queue"
                             , NULL
                             , "tcp"
                             , NULL
-                            , "TCP Listen Socket Issues"
+                            , "TCP SYN Queue Issues"
                             , "packets/s"
-                            , "proc"
-                            , "net/netstat"
-                            , 3015
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_SYN_QUEUE
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
 
-                    rd_overflows = rrddim_add(st_listen, "ListenOverflows", "overflows",  1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_drops     = rrddim_add(st_listen, "ListenDrops",     "drops",      1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_TCPReqQFullDrop      = rrddim_add(st_syn_queue, "TCPReqQFullDrop",      "drops",   1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_TCPReqQFullDoCookies = rrddim_add(st_syn_queue, "TCPReqQFullDoCookies", "cookies", 1, 1, RRD_ALGORITHM_INCREMENTAL);
                 }
                 else
-                    rrdset_next(st_listen);
+                    rrdset_next(st_syn_queue);
 
-                rrddim_set_by_pointer(st_listen, rd_overflows, tcpext_ListenOverflows);
-                rrddim_set_by_pointer(st_listen, rd_drops,     tcpext_ListenDrops);
+                rrddim_set_by_pointer(st_syn_queue, rd_TCPReqQFullDrop,      tcpext_TCPReqQFullDrop);
+                rrddim_set_by_pointer(st_syn_queue, rd_TCPReqQFullDoCookies, tcpext_TCPReqQFullDoCookies);
 
-                rrdset_done(st_listen);
+                rrdset_done(st_syn_queue);
             }
+
+            // --------------------------------------------------------------------
+
+            if(do_tcpext_accept_queue == CONFIG_BOOLEAN_YES || (do_tcpext_accept_queue == CONFIG_BOOLEAN_AUTO && (tcpext_ListenOverflows || tcpext_ListenDrops))) {
+                do_tcpext_accept_queue = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_accept_queue = NULL;
+                static RRDDIM *rd_overflows = NULL,
+                    *rd_drops = NULL;
+
+                if(unlikely(!st_accept_queue)) {
+
+                    st_accept_queue = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "tcp_accept_queue"
+                            , NULL
+                            , "tcp"
+                            , NULL
+                            , "TCP Accept Queue Issues"
+                            , "packets/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_ACCEPT_QUEUE
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rd_overflows = rrddim_add(st_accept_queue, "ListenOverflows", "overflows", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_drops     = rrddim_add(st_accept_queue, "ListenDrops",     "drops",     1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_accept_queue);
+
+                rrddim_set_by_pointer(st_accept_queue, rd_overflows, tcpext_ListenOverflows);
+                rrddim_set_by_pointer(st_accept_queue, rd_drops,     tcpext_ListenDrops);
+
+                rrdset_done(st_accept_queue);
+            }
+
         }
     }
 
diff --git a/src/proc_net_rpc_nfs.c b/collectors/proc.plugin/proc_net_rpc_nfs.c
index a4c778cba..f5702859c 100644
--- a/src/proc_net_rpc_nfs.c
+++ b/collectors/proc.plugin/proc_net_rpc_nfs.c
@@ -1,4 +1,9 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_NFS_NAME "/proc/net/rpc/nfs"
+#define CONFIG_SECTION_PLUGIN_PROC_NFS "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_NFS_NAME
 
 struct nfs_procs {
     char name[30];
@@ -143,18 +148,18 @@ int do_proc_net_rpc_nfs(int update_every, usec_t dt) {
     if(!ff) {
         char filename[FILENAME_MAX + 1];
         snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/net/rpc/nfs");
-        ff = procfile_open(config_get("plugin:proc:/proc/net/rpc/nfs", "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
+        ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_NFS, "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
     }
     if(!ff) return 1;
 
     ff = procfile_readall(ff);
     if(!ff) return 0; // we return 0, so that we will retry to open it next time
 
-    if(do_net == -1) do_net = config_get_boolean("plugin:proc:/proc/net/rpc/nfs", "network", 1);
-    if(do_rpc == -1) do_rpc = config_get_boolean("plugin:proc:/proc/net/rpc/nfs", "rpc", 1);
-    if(do_proc2 == -1) do_proc2 = config_get_boolean("plugin:proc:/proc/net/rpc/nfs", "NFS v2 procedures", 1);
-    if(do_proc3 == -1) do_proc3 = config_get_boolean("plugin:proc:/proc/net/rpc/nfs", "NFS v3 procedures", 1);
-    if(do_proc4 == -1) do_proc4 = config_get_boolean("plugin:proc:/proc/net/rpc/nfs", "NFS v4 procedures", 1);
+    if(do_net == -1) do_net = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_NFS, "network", 1);
+    if(do_rpc == -1) do_rpc = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_NFS, "rpc", 1);
+    if(do_proc2 == -1) do_proc2 = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_NFS, "NFS v2 procedures", 1);
+    if(do_proc3 == -1) do_proc3 = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_NFS, "NFS v3 procedures", 1);
+    if(do_proc4 == -1) do_proc4 = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_NFS, "NFS v4 procedures", 1);
 
     // if they are enabled, reset them to 1
     // later we do them =2 to avoid doing strcmp() for all lines
@@ -286,9 +291,9 @@ int do_proc_net_rpc_nfs(int update_every, usec_t dt) {
                     , NULL
                     , "NFS Client Network"
                     , "operations/s"
-                    , "proc"
-                    , "net/rpc/nfs"
-                    , 2207
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFS_NAME
+                    , NETDATA_CHART_PRIO_NFS_NET
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -326,9 +331,9 @@ int do_proc_net_rpc_nfs(int update_every, usec_t dt) {
                     , NULL
                     , "NFS Client Remote Procedure Calls Statistics"
                     , "calls/s"
-                    , "proc"
-                    , "net/rpc/nfs"
-                    , 2208
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFS_NAME
+                    , NETDATA_CHART_PRIO_NFS_RPC
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -359,9 +364,9 @@ int do_proc_net_rpc_nfs(int update_every, usec_t dt) {
                     , NULL
                     , "NFS v2 Client Remote Procedure Calls"
                     , "calls/s"
-                    , "proc"
-                    , "net/rpc/nfs"
-                    , 2209
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFS_NAME
+                    , NETDATA_CHART_PRIO_NFS_PROC2
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -392,9 +397,9 @@ int do_proc_net_rpc_nfs(int update_every, usec_t dt) {
                     , NULL
                     , "NFS v3 Client Remote Procedure Calls"
                     , "calls/s"
-                    , "proc"
-                    , "net/rpc/nfs"
-                    , 2210
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFS_NAME
+                    , NETDATA_CHART_PRIO_NFS_PROC3
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -425,9 +430,9 @@ int do_proc_net_rpc_nfs(int update_every, usec_t dt) {
                     , NULL
                     , "NFS v4 Client Remote Procedure Calls"
                     , "calls/s"
-                    , "proc"
-                    , "net/rpc/nfs"
-                    , 2211
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFS_NAME
+                    , NETDATA_CHART_PRIO_NFS_PROC4
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
diff --git a/src/proc_net_rpc_nfsd.c b/collectors/proc.plugin/proc_net_rpc_nfsd.c
index 8aca31aed..20b87e9dd 100644
--- a/src/proc_net_rpc_nfsd.c
+++ b/collectors/proc.plugin/proc_net_rpc_nfsd.c
@@ -1,4 +1,8 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_NFSD_NAME "/proc/net/rpc/nfsd"
 
 struct nfsd_procs {
     char name[30];
@@ -515,9 +519,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                     , NULL
                     , "NFS Server Read Cache"
                     , "reads/s"
-                    , "proc"
-                    , "net/rpc/nfsd"
-                    , 2100
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFSD_NAME
+                    , NETDATA_CHART_PRIO_NFSD_READCACHE
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -553,9 +557,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                     , NULL
                     , "NFS Server File Handles"
                     , "handles/s"
-                    , "proc"
-                    , "net/rpc/nfsd"
-                    , 2101
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFSD_NAME
+                    , NETDATA_CHART_PRIO_NFSD_FILEHANDLES
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -593,9 +597,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                     , NULL
                     , "NFS Server I/O"
                     , "kilobytes/s"
-                    , "proc"
-                    , "net/rpc/nfsd"
-                    , 2102
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFSD_NAME
+                    , NETDATA_CHART_PRIO_NFSD_IO
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -626,9 +630,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                         , NULL
                         , "NFS Server Threads"
                         , "threads"
-                        , "proc"
-                        , "net/rpc/nfsd"
-                        , 2103
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NFSD_NAME
+                        , NETDATA_CHART_PRIO_NFSD_THREADS
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -654,9 +658,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                         , NULL
                         , "NFS Server Threads Full Count"
                         , "ops/s"
-                        , "proc"
-                        , "net/rpc/nfsd"
-                        , 2104
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NFSD_NAME
+                        , NETDATA_CHART_PRIO_NFSD_THREADS_FULLCNT
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -691,9 +695,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                         , NULL
                         , "NFS Server Threads Usage Histogram"
                         , "percentage"
-                        , "proc"
-                        , "net/rpc/nfsd"
-                        , 2105
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NFSD_NAME
+                        , NETDATA_CHART_PRIO_NFSD_THREADS_HISTOGRAM
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
@@ -750,9 +754,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                     , NULL
                     , "NFS Server Read Ahead Depth"
                     , "percentage"
-                    , "proc"
-                    , "net/rpc/nfsd"
-                    , 2105
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFSD_NAME
+                    , NETDATA_CHART_PRIO_NFSD_READAHEAD
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -804,9 +808,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                     , NULL
                     , "NFS Server Network Statistics"
                     , "packets/s"
-                    , "proc"
-                    , "net/rpc/nfsd"
-                    , 2107
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFSD_NAME
+                    , NETDATA_CHART_PRIO_NFSD_NET
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -843,9 +847,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                     , NULL
                     , "NFS Server Remote Procedure Calls Statistics"
                     , "calls/s"
-                    , "proc"
-                    , "net/rpc/nfsd"
-                    , 2108
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFSD_NAME
+                    , NETDATA_CHART_PRIO_NFSD_RPC
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -879,9 +883,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                     , NULL
                     , "NFS v2 Server Remote Procedure Calls"
                     , "calls/s"
-                    , "proc"
-                    , "net/rpc/nfsd"
-                    , 2109
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFSD_NAME
+                    , NETDATA_CHART_PRIO_NFSD_PROC2
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -912,9 +916,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                     , NULL
                     , "NFS v3 Server Remote Procedure Calls"
                     , "calls/s"
-                    , "proc"
-                    , "net/rpc/nfsd"
-                    , 2110
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFSD_NAME
+                    , NETDATA_CHART_PRIO_NFSD_PROC3
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -945,9 +949,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                     , NULL
                     , "NFS v4 Server Remote Procedure Calls"
                     , "calls/s"
-                    , "proc"
-                    , "net/rpc/nfsd"
-                    , 2111
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFSD_NAME
+                    , NETDATA_CHART_PRIO_NFSD_PROC4
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -978,9 +982,9 @@ int do_proc_net_rpc_nfsd(int update_every, usec_t dt) {
                     , NULL
                     , "NFS v4 Server Operations"
                     , "operations/s"
-                    , "proc"
-                    , "net/rpc/nfsd"
-                    , 2112
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NFSD_NAME
+                    , NETDATA_CHART_PRIO_NFSD_PROC4OPS
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
diff --git a/collectors/proc.plugin/proc_net_sctp_snmp.c b/collectors/proc.plugin/proc_net_sctp_snmp.c
new file mode 100644
index 000000000..bd1062e98
--- /dev/null
+++ b/collectors/proc.plugin/proc_net_sctp_snmp.c
@@ -0,0 +1,352 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+#define PLUGIN_PROC_MODULE_NET_SCTP_SNMP_NAME "/proc/net/sctp/snmp"
+
+int do_proc_net_sctp_snmp(int update_every, usec_t dt) {
+    (void)dt;
+
+    static procfile *ff = NULL;
+
+    static int
+            do_associations = -1,
+            do_transitions = -1,
+            do_packet_errors = -1,
+            do_packets = -1,
+            do_fragmentation = -1,
+            do_chunk_types = -1;
+
+    static ARL_BASE *arl_base = NULL;
+
+    static unsigned long long SctpCurrEstab               = 0ULL;
+    static unsigned long long SctpActiveEstabs            = 0ULL;
+    static unsigned long long SctpPassiveEstabs           = 0ULL;
+    static unsigned long long SctpAborteds                = 0ULL;
+    static unsigned long long SctpShutdowns               = 0ULL;
+    static unsigned long long SctpOutOfBlues              = 0ULL;
+    static unsigned long long SctpChecksumErrors          = 0ULL;
+    static unsigned long long SctpOutCtrlChunks           = 0ULL;
+    static unsigned long long SctpOutOrderChunks          = 0ULL;
+    static unsigned long long SctpOutUnorderChunks        = 0ULL;
+    static unsigned long long SctpInCtrlChunks            = 0ULL;
+    static unsigned long long SctpInOrderChunks           = 0ULL;
+    static unsigned long long SctpInUnorderChunks         = 0ULL;
+    static unsigned long long SctpFragUsrMsgs             = 0ULL;
+    static unsigned long long SctpReasmUsrMsgs            = 0ULL;
+    static unsigned long long SctpOutSCTPPacks            = 0ULL;
+    static unsigned long long SctpInSCTPPacks             = 0ULL;
+    static unsigned long long SctpT1InitExpireds          = 0ULL;
+    static unsigned long long SctpT1CookieExpireds        = 0ULL;
+    static unsigned long long SctpT2ShutdownExpireds      = 0ULL;
+    static unsigned long long SctpT3RtxExpireds           = 0ULL;
+    static unsigned long long SctpT4RtoExpireds           = 0ULL;
+    static unsigned long long SctpT5ShutdownGuardExpireds = 0ULL;
+    static unsigned long long SctpDelaySackExpireds       = 0ULL;
+    static unsigned long long SctpAutocloseExpireds       = 0ULL;
+    static unsigned long long SctpT3Retransmits           = 0ULL;
+    static unsigned long long SctpPmtudRetransmits        = 0ULL;
+    static unsigned long long SctpFastRetransmits         = 0ULL;
+    static unsigned long long SctpInPktSoftirq            = 0ULL;
+    static unsigned long long SctpInPktBacklog            = 0ULL;
+    static unsigned long long SctpInPktDiscards           = 0ULL;
+    static unsigned long long SctpInDataChunkDiscards     = 0ULL;
+
+    if(unlikely(!arl_base)) {
+        do_associations = config_get_boolean_ondemand("plugin:proc:/proc/net/sctp/snmp", "established associations", CONFIG_BOOLEAN_AUTO);
+        do_transitions = config_get_boolean_ondemand("plugin:proc:/proc/net/sctp/snmp", "association transitions", CONFIG_BOOLEAN_AUTO);
+        do_fragmentation = config_get_boolean_ondemand("plugin:proc:/proc/net/sctp/snmp", "fragmentation", CONFIG_BOOLEAN_AUTO);
+        do_packets = config_get_boolean_ondemand("plugin:proc:/proc/net/sctp/snmp", "packets", CONFIG_BOOLEAN_AUTO);
+        do_packet_errors = config_get_boolean_ondemand("plugin:proc:/proc/net/sctp/snmp", "packet errors", CONFIG_BOOLEAN_AUTO);
+        do_chunk_types = config_get_boolean_ondemand("plugin:proc:/proc/net/sctp/snmp", "chunk types", CONFIG_BOOLEAN_AUTO);
+
+        arl_base = arl_create("sctp", NULL, 60);
+        arl_expect(arl_base, "SctpCurrEstab", &SctpCurrEstab);
+        arl_expect(arl_base, "SctpActiveEstabs", &SctpActiveEstabs);
+        arl_expect(arl_base, "SctpPassiveEstabs", &SctpPassiveEstabs);
+        arl_expect(arl_base, "SctpAborteds", &SctpAborteds);
+        arl_expect(arl_base, "SctpShutdowns", &SctpShutdowns);
+        arl_expect(arl_base, "SctpOutOfBlues", &SctpOutOfBlues);
+        arl_expect(arl_base, "SctpChecksumErrors", &SctpChecksumErrors);
+        arl_expect(arl_base, "SctpOutCtrlChunks", &SctpOutCtrlChunks);
+        arl_expect(arl_base, "SctpOutOrderChunks", &SctpOutOrderChunks);
+        arl_expect(arl_base, "SctpOutUnorderChunks", &SctpOutUnorderChunks);
+        arl_expect(arl_base, "SctpInCtrlChunks", &SctpInCtrlChunks);
+        arl_expect(arl_base, "SctpInOrderChunks", &SctpInOrderChunks);
+        arl_expect(arl_base, "SctpInUnorderChunks", &SctpInUnorderChunks);
+        arl_expect(arl_base, "SctpFragUsrMsgs", &SctpFragUsrMsgs);
+        arl_expect(arl_base, "SctpReasmUsrMsgs", &SctpReasmUsrMsgs);
+        arl_expect(arl_base, "SctpOutSCTPPacks", &SctpOutSCTPPacks);
+        arl_expect(arl_base, "SctpInSCTPPacks", &SctpInSCTPPacks);
+        arl_expect(arl_base, "SctpT1InitExpireds", &SctpT1InitExpireds);
+        arl_expect(arl_base, "SctpT1CookieExpireds", &SctpT1CookieExpireds);
+        arl_expect(arl_base, "SctpT2ShutdownExpireds", &SctpT2ShutdownExpireds);
+        arl_expect(arl_base, "SctpT3RtxExpireds", &SctpT3RtxExpireds);
+        arl_expect(arl_base, "SctpT4RtoExpireds", &SctpT4RtoExpireds);
+        arl_expect(arl_base, "SctpT5ShutdownGuardExpireds", &SctpT5ShutdownGuardExpireds);
+        arl_expect(arl_base, "SctpDelaySackExpireds", &SctpDelaySackExpireds);
+        arl_expect(arl_base, "SctpAutocloseExpireds", &SctpAutocloseExpireds);
+        arl_expect(arl_base, "SctpT3Retransmits", &SctpT3Retransmits);
+        arl_expect(arl_base, "SctpPmtudRetransmits", &SctpPmtudRetransmits);
+        arl_expect(arl_base, "SctpFastRetransmits", &SctpFastRetransmits);
+        arl_expect(arl_base, "SctpInPktSoftirq", &SctpInPktSoftirq);
+        arl_expect(arl_base, "SctpInPktBacklog", &SctpInPktBacklog);
+        arl_expect(arl_base, "SctpInPktDiscards", &SctpInPktDiscards);
+        arl_expect(arl_base, "SctpInDataChunkDiscards", &SctpInDataChunkDiscards);
+    }
+
+    if(unlikely(!ff)) {
+        char filename[FILENAME_MAX + 1];
+        snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/net/sctp/snmp");
+        ff = procfile_open(config_get("plugin:proc:/proc/net/sctp/snmp", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
+        if(unlikely(!ff))
+            return 1;
+    }
+
+    ff = procfile_readall(ff);
+    if(unlikely(!ff))
+        return 0; // we return 0, so that we will retry to open it next time
+
+    size_t lines = procfile_lines(ff), l;
+
+    arl_begin(arl_base);
+
+    for(l = 0; l < lines ;l++) {
+        size_t words = procfile_linewords(ff, l);
+        if(unlikely(words < 2)) {
+            if(unlikely(words)) error("Cannot read /proc/net/sctp/snmp line %zu. Expected 2 params, read %zu.", l, words);
+            continue;
+        }
+
+        if(unlikely(arl_check(arl_base,
+                procfile_lineword(ff, l, 0),
+                procfile_lineword(ff, l, 1)))) break;
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_associations == CONFIG_BOOLEAN_YES || (do_associations == CONFIG_BOOLEAN_AUTO && SctpCurrEstab)) {
+        do_associations = CONFIG_BOOLEAN_YES;
+        static RRDSET *st = NULL;
+        static RRDDIM *rd_established = NULL;
+
+        if(unlikely(!st)) {
+            st = rrdset_create_localhost(
+                    "sctp"
+                    , "established"
+                    , NULL
+                    , "associations"
+                    , NULL
+                    , "SCTP current total number of established associations"
+                    , "associations"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SCTP_SNMP_NAME
+                    , NETDATA_CHART_PRIO_SCTP
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+
+            rd_established = rrddim_add(st, "SctpCurrEstab",  "established",  1, 1, RRD_ALGORITHM_ABSOLUTE);
+        }
+        else rrdset_next(st);
+
+        rrddim_set_by_pointer(st, rd_established, SctpCurrEstab);
+        rrdset_done(st);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_transitions == CONFIG_BOOLEAN_YES || (do_transitions == CONFIG_BOOLEAN_AUTO && (SctpActiveEstabs || SctpPassiveEstabs || SctpAborteds || SctpShutdowns))) {
+        do_transitions = CONFIG_BOOLEAN_YES;
+        static RRDSET *st = NULL;
+        static RRDDIM *rd_active = NULL,
+                      *rd_passive = NULL,
+                      *rd_aborted = NULL,
+                      *rd_shutdown = NULL;
+
+        if(unlikely(!st)) {
+            st = rrdset_create_localhost(
+                    "sctp"
+                    , "transitions"
+                    , NULL
+                    , "transitions"
+                    , NULL
+                    , "SCTP Association Transitions"
+                    , "transitions/s"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SCTP_SNMP_NAME
+                    , NETDATA_CHART_PRIO_SCTP + 10
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+
+            rd_active   = rrddim_add(st, "SctpActiveEstabs",  "active",    1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_passive  = rrddim_add(st, "SctpPassiveEstabs", "passive",   1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_aborted  = rrddim_add(st, "SctpAborteds",      "aborted",  -1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_shutdown = rrddim_add(st, "SctpShutdowns",     "shutdown", -1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+        else rrdset_next(st);
+
+        rrddim_set_by_pointer(st, rd_active,    SctpActiveEstabs);
+        rrddim_set_by_pointer(st, rd_passive,   SctpPassiveEstabs);
+        rrddim_set_by_pointer(st, rd_aborted,   SctpAborteds);
+        rrddim_set_by_pointer(st, rd_shutdown,  SctpShutdowns);
+        rrdset_done(st);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_packets == CONFIG_BOOLEAN_YES || (do_packets == CONFIG_BOOLEAN_AUTO && (SctpInSCTPPacks || SctpOutSCTPPacks))) {
+        do_packets = CONFIG_BOOLEAN_YES;
+        static RRDSET *st = NULL;
+        static RRDDIM *rd_received = NULL,
+                      *rd_sent = NULL;
+
+        if(unlikely(!st)) {
+            st = rrdset_create_localhost(
+                    "sctp"
+                    , "packets"
+                    , NULL
+                    , "packets"
+                    , NULL
+                    , "SCTP Packets"
+                    , "packets/s"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SCTP_SNMP_NAME
+                    , NETDATA_CHART_PRIO_SCTP + 20
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+            rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
+
+            rd_received = rrddim_add(st, "SctpInSCTPPacks",  "received",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_sent     = rrddim_add(st, "SctpOutSCTPPacks", "sent",     -1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+        else rrdset_next(st);
+
+        rrddim_set_by_pointer(st, rd_received, SctpInSCTPPacks);
+        rrddim_set_by_pointer(st, rd_sent,     SctpOutSCTPPacks);
+        rrdset_done(st);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_packet_errors == CONFIG_BOOLEAN_YES || (do_packet_errors == CONFIG_BOOLEAN_AUTO && (SctpOutOfBlues || SctpChecksumErrors))) {
+        do_packet_errors = CONFIG_BOOLEAN_YES;
+        static RRDSET *st = NULL;
+        static RRDDIM *rd_invalid = NULL,
+                      *rd_csum = NULL;
+
+        if(unlikely(!st)) {
+            st = rrdset_create_localhost(
+                    "sctp"
+                    , "packet_errors"
+                    , NULL
+                    , "packets"
+                    , NULL
+                    , "SCTP Packet Errors"
+                    , "packets/s"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SCTP_SNMP_NAME
+                    , NETDATA_CHART_PRIO_SCTP + 30
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+            rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
+
+            rd_invalid = rrddim_add(st, "SctpOutOfBlues",     "invalid",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_csum    = rrddim_add(st, "SctpChecksumErrors", "checksum", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+        else rrdset_next(st);
+
+        rrddim_set_by_pointer(st, rd_invalid, SctpOutOfBlues);
+        rrddim_set_by_pointer(st, rd_csum,    SctpChecksumErrors);
+        rrdset_done(st);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_fragmentation == CONFIG_BOOLEAN_YES || (do_fragmentation == CONFIG_BOOLEAN_AUTO && (SctpFragUsrMsgs || SctpReasmUsrMsgs))) {
+        do_fragmentation = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st = NULL;
+        static RRDDIM *rd_fragmented = NULL,
+                      *rd_reassembled = NULL;
+
+        if(unlikely(!st)) {
+            st = rrdset_create_localhost(
+                    "sctp"
+                    , "fragmentation"
+                    , NULL
+                    , "fragmentation"
+                    , NULL
+                    , "SCTP Fragmentation"
+                    , "packets/s"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SCTP_SNMP_NAME
+                    , NETDATA_CHART_PRIO_SCTP + 40
+                    , update_every
+                    , RRDSET_TYPE_LINE);
+            rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
+
+            rd_reassembled = rrddim_add(st, "SctpReasmUsrMsgs", "reassembled",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_fragmented  = rrddim_add(st, "SctpFragUsrMsgs",  "fragmented",  -1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+        else rrdset_next(st);
+
+        rrddim_set_by_pointer(st, rd_reassembled, SctpReasmUsrMsgs);
+        rrddim_set_by_pointer(st, rd_fragmented,  SctpFragUsrMsgs);
+        rrdset_done(st);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(do_chunk_types == CONFIG_BOOLEAN_YES || (do_chunk_types == CONFIG_BOOLEAN_AUTO
+        && (SctpInCtrlChunks || SctpInOrderChunks || SctpInUnorderChunks || SctpOutCtrlChunks || SctpOutOrderChunks || SctpOutUnorderChunks))) {
+        do_chunk_types = CONFIG_BOOLEAN_YES;
+        static RRDSET *st = NULL;
+        static RRDDIM
+                *rd_InCtrl     = NULL,
+                *rd_InOrder    = NULL,
+                *rd_InUnorder  = NULL,
+                *rd_OutCtrl    = NULL,
+                *rd_OutOrder   = NULL,
+                *rd_OutUnorder = NULL;
+
+        if(unlikely(!st)) {
+            st = rrdset_create_localhost(
+                    "sctp"
+                    , "chunks"
+                    , NULL
+                    , "chunks"
+                    , NULL
+                    , "SCTP Chunk Types"
+                    , "chunks/s"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SCTP_SNMP_NAME
+                    , NETDATA_CHART_PRIO_SCTP + 50
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+            rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
+
+            rd_InCtrl     = rrddim_add(st, "SctpInCtrlChunks",     "InCtrl",      1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_InOrder    = rrddim_add(st, "SctpInOrderChunks",    "InOrder",     1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_InUnorder  = rrddim_add(st, "SctpInUnorderChunks",  "InUnorder",   1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_OutCtrl    = rrddim_add(st, "SctpOutCtrlChunks",    "OutCtrl",    -1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_OutOrder   = rrddim_add(st, "SctpOutOrderChunks",   "OutOrder",   -1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_OutUnorder = rrddim_add(st, "SctpOutUnorderChunks", "OutUnorder", -1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+        else rrdset_next(st);
+
+        rrddim_set_by_pointer(st, rd_InCtrl,     SctpInCtrlChunks);
+        rrddim_set_by_pointer(st, rd_InOrder,    SctpInOrderChunks);
+        rrddim_set_by_pointer(st, rd_InUnorder,  SctpInUnorderChunks);
+        rrddim_set_by_pointer(st, rd_OutCtrl,    SctpOutCtrlChunks);
+        rrddim_set_by_pointer(st, rd_OutOrder,   SctpOutOrderChunks);
+        rrddim_set_by_pointer(st, rd_OutUnorder, SctpOutUnorderChunks);
+        rrdset_done(st);
+    }
+
+    return 0;
+}
+
diff --git a/src/proc_net_snmp.c b/collectors/proc.plugin/proc_net_snmp.c
index 43c010c14..ffd368f6e 100644
--- a/src/proc_net_snmp.c
+++ b/collectors/proc.plugin/proc_net_snmp.c
@@ -1,6 +1,9 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
 
-#define RRD_TYPE_NET_SNMP           "ipv4"
+#include "plugin_proc.h"
+#define PLUGIN_PROC_MODULE_NET_SNMP_NAME "/proc/net/snmp"
+
+#define RRD_TYPE_NET_SNMP "ipv4"
 
 static struct proc_net_snmp {
     // kernel_uint_t ip_Forwarding;
@@ -102,23 +105,22 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
              *arl_udplite = NULL;
 
     static RRDVAR *tcp_max_connections_var = NULL;
-    static ssize_t last_max_connections = 0;
 
     if(unlikely(!arl_ip)) {
-        do_ip_packets       = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 packets", 1);
-        do_ip_fragsout      = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 fragments sent", 1);
-        do_ip_fragsin       = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 fragments assembly", 1);
-        do_ip_errors        = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 errors", 1);
-        do_tcp_sockets      = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP connections", 1);
-        do_tcp_packets      = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP packets", 1);
-        do_tcp_errors       = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP errors", 1);
-        do_tcp_opens        = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP opens", 1);
-        do_tcp_handshake    = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 TCP handshake issues", 1);
-        do_udp_packets      = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 UDP packets", 1);
-        do_udp_errors       = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 UDP errors", 1);
-        do_icmp_packets     = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 ICMP packets", 1);
-        do_icmpmsg          = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 ICMP messages", 1);
-        do_udplite_packets  = config_get_boolean("plugin:proc:/proc/net/snmp", "ipv4 UDPLite packets", 1);
+        do_ip_packets       = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 packets", CONFIG_BOOLEAN_AUTO);
+        do_ip_fragsout      = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 fragments sent", CONFIG_BOOLEAN_AUTO);
+        do_ip_fragsin       = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 fragments assembly", CONFIG_BOOLEAN_AUTO);
+        do_ip_errors        = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 errors", CONFIG_BOOLEAN_AUTO);
+        do_tcp_sockets      = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 TCP connections", CONFIG_BOOLEAN_AUTO);
+        do_tcp_packets      = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 TCP packets", CONFIG_BOOLEAN_AUTO);
+        do_tcp_errors       = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 TCP errors", CONFIG_BOOLEAN_AUTO);
+        do_tcp_opens        = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 TCP opens", CONFIG_BOOLEAN_AUTO);
+        do_tcp_handshake    = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 TCP handshake issues", CONFIG_BOOLEAN_AUTO);
+        do_udp_packets      = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 UDP packets", CONFIG_BOOLEAN_AUTO);
+        do_udp_errors       = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 UDP errors", CONFIG_BOOLEAN_AUTO);
+        do_icmp_packets     = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 ICMP packets", CONFIG_BOOLEAN_AUTO);
+        do_icmpmsg          = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 ICMP messages", CONFIG_BOOLEAN_AUTO);
+        do_udplite_packets  = config_get_boolean_ondemand("plugin:proc:/proc/net/snmp", "ipv4 UDPLite packets", CONFIG_BOOLEAN_AUTO);
 
         hash_ip = simple_hash("Ip");
         hash_tcp = simple_hash("Tcp");
@@ -181,7 +183,7 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
         // arl_expect(arl_tcp, "RtoAlgorithm", &snmp_root.tcp_RtoAlgorithm);
         // arl_expect(arl_tcp, "RtoMin", &snmp_root.tcp_RtoMin);
         // arl_expect(arl_tcp, "RtoMax", &snmp_root.tcp_RtoMax);
-        arl_expect(arl_tcp, "MaxConn", &snmp_root.tcp_MaxConn);
+        arl_expect_custom(arl_tcp, "MaxConn", arl_callback_ssize_t, &snmp_root.tcp_MaxConn);
         arl_expect(arl_tcp, "ActiveOpens", &snmp_root.tcp_ActiveOpens);
         arl_expect(arl_tcp, "PassiveOpens", &snmp_root.tcp_PassiveOpens);
         arl_expect(arl_tcp, "AttemptFails", &snmp_root.tcp_AttemptFails);
@@ -256,7 +258,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_ip_packets) {
+            if(do_ip_packets == CONFIG_BOOLEAN_YES || (do_ip_packets == CONFIG_BOOLEAN_AUTO && (snmp_root.ip_OutRequests || snmp_root.ip_InReceives || snmp_root.ip_ForwDatagrams || snmp_root.ip_InDelivers))) {
+                do_ip_packets = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_InReceives = NULL,
                               *rd_OutRequests = NULL,
@@ -272,9 +276,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 Packets"
                             , "packets/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 2450
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_PACKETS
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -295,7 +299,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_ip_fragsout) {
+            if(do_ip_fragsout == CONFIG_BOOLEAN_YES || (do_ip_fragsout == CONFIG_BOOLEAN_AUTO && (snmp_root.ip_FragOKs || snmp_root.ip_FragFails || snmp_root.ip_FragCreates))) {
+                do_ip_fragsout = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_FragOKs = NULL,
                               *rd_FragFails = NULL,
@@ -310,9 +316,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 Fragments Sent"
                             , "packets/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 3020
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_FRAGMENTS
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -332,7 +338,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_ip_fragsin) {
+            if(do_ip_fragsin == CONFIG_BOOLEAN_YES || (do_ip_fragsin == CONFIG_BOOLEAN_AUTO && (snmp_root.ip_ReasmOKs || snmp_root.ip_ReasmFails || snmp_root.ip_ReasmReqds))) {
+                do_ip_fragsin = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_ReasmOKs = NULL,
                               *rd_ReasmFails = NULL,
@@ -347,9 +355,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 Fragments Reassembly"
                             , "packets/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 3030
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_FRAGMENTS + 1
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -369,7 +377,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_ip_errors) {
+            if(do_ip_errors == CONFIG_BOOLEAN_YES || (do_ip_errors == CONFIG_BOOLEAN_AUTO && (snmp_root.ip_InDiscards || snmp_root.ip_OutDiscards || snmp_root.ip_InHdrErrors || snmp_root.ip_InAddrErrors || snmp_root.ip_InUnknownProtos || snmp_root.ip_OutNoRoutes))) {
+                do_ip_errors = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_InDiscards = NULL,
                               *rd_OutDiscards = NULL,
@@ -387,9 +397,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 Errors"
                             , "packets/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 2470
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_ERRORS
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -437,7 +447,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_icmp_packets) {
+            if(do_icmp_packets == CONFIG_BOOLEAN_YES || (do_icmp_packets == CONFIG_BOOLEAN_AUTO && (snmp_root.icmp_InMsgs || snmp_root.icmp_OutMsgs || snmp_root.icmp_InErrors || snmp_root.icmp_OutErrors || snmp_root.icmp_InCsumErrors))) {
+                do_icmp_packets = CONFIG_BOOLEAN_YES;
+
                 {
                     static RRDSET *st_packets = NULL;
                     static RRDDIM *rd_InMsgs = NULL,
@@ -452,9 +464,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                                 , NULL
                                 , "IPv4 ICMP Packets"
                                 , "packets/s"
-                                , "proc"
-                                , "net/snmp"
-                                , 2602
+                                , PLUGIN_PROC_NAME
+                                , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                                , NETDATA_CHART_PRIO_IPV4_ICMP
                                 , update_every
                                 , RRDSET_TYPE_LINE
                         );
@@ -485,9 +497,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                                 , NULL
                                 , "IPv4 ICMP Errors"
                                 , "packets/s"
-                                , "proc"
-                                , "net/snmp"
-                                , 2603
+                                , PLUGIN_PROC_NAME
+                                , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                                , NETDATA_CHART_PRIO_IPV4_ICMP + 1
                                 , update_every
                                 , RRDSET_TYPE_LINE
                         );
@@ -515,8 +527,8 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
             }
 
             words = procfile_linewords(ff, l);
-            if(words < 3) {
-                error("Cannot read /proc/net/snmp IcmpMsg line. Expected 3+ params, read %zu.", words);
+            if(words < 2) {
+                error("Cannot read /proc/net/snmp IcmpMsg line. Expected 2+ params, read %zu.", words);
                 continue;
             }
 
@@ -528,7 +540,30 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_icmpmsg) {
+            if(do_icmpmsg == CONFIG_BOOLEAN_YES || (do_icmpmsg == CONFIG_BOOLEAN_AUTO && (
+                    snmp_root.icmpmsg_InEchoReps
+                    || snmp_root.icmpmsg_OutEchoReps
+                    || snmp_root.icmpmsg_InDestUnreachs
+                    || snmp_root.icmpmsg_OutDestUnreachs
+                    || snmp_root.icmpmsg_InRedirects
+                    || snmp_root.icmpmsg_OutRedirects
+                    || snmp_root.icmpmsg_InEchos
+                    || snmp_root.icmpmsg_OutEchos
+                    || snmp_root.icmpmsg_InRouterAdvert
+                    || snmp_root.icmpmsg_OutRouterAdvert
+                    || snmp_root.icmpmsg_InRouterSelect
+                    || snmp_root.icmpmsg_OutRouterSelect
+                    || snmp_root.icmpmsg_InTimeExcds
+                    || snmp_root.icmpmsg_OutTimeExcds
+                    || snmp_root.icmpmsg_InParmProbs
+                    || snmp_root.icmpmsg_OutParmProbs
+                    || snmp_root.icmpmsg_InTimestamps
+                    || snmp_root.icmpmsg_OutTimestamps
+                    || snmp_root.icmpmsg_InTimestampReps
+                    || snmp_root.icmpmsg_OutTimestampReps
+                    ))) {
+                do_icmpmsg = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st                  = NULL;
                 static RRDDIM *rd_InEchoReps       = NULL,
                               *rd_OutEchoReps      = NULL,
@@ -560,9 +595,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 ICMP Messages"
                             , "packets/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 2604
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_ICMP + 2
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -636,15 +671,15 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(snmp_root.tcp_MaxConn != last_max_connections) {
-                last_max_connections = snmp_root.tcp_MaxConn;
-                rrdvar_custom_host_variable_set(localhost, tcp_max_connections_var, last_max_connections);
-            }
+            // this is smart enough to update it, only when it is changed
+            rrdvar_custom_host_variable_set(localhost, tcp_max_connections_var, snmp_root.tcp_MaxConn);
 
             // --------------------------------------------------------------------
 
             // see http://net-snmp.sourceforge.net/docs/mibs/tcp.html
-            if(do_tcp_sockets) {
+            if(do_tcp_sockets == CONFIG_BOOLEAN_YES || (do_tcp_sockets == CONFIG_BOOLEAN_AUTO && snmp_root.tcp_CurrEstab)) {
+                do_tcp_sockets = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_CurrEstab = NULL;
 
@@ -657,9 +692,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 TCP Connections"
                             , "active connections"
-                            , "proc"
-                            , "net/snmp"
-                            , 2501
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_TCP
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -674,7 +709,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_tcp_packets) {
+            if(do_tcp_packets == CONFIG_BOOLEAN_YES || (do_tcp_packets == CONFIG_BOOLEAN_AUTO && (snmp_root.tcp_InSegs || snmp_root.tcp_OutSegs))) {
+                do_tcp_packets = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_InSegs = NULL,
                               *rd_OutSegs = NULL;
@@ -688,9 +725,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 TCP Packets"
                             , "packets/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 2510
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_TCP + 4
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -707,7 +744,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_tcp_errors) {
+            if(do_tcp_errors == CONFIG_BOOLEAN_YES || (do_tcp_errors == CONFIG_BOOLEAN_AUTO && (snmp_root.tcp_InErrs || snmp_root.tcp_InCsumErrors || snmp_root.tcp_RetransSegs))) {
+                do_tcp_errors = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_InErrs = NULL,
                               *rd_InCsumErrors = NULL,
@@ -722,9 +761,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 TCP Errors"
                             , "packets/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 2525
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_TCP + 20
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -744,7 +783,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_tcp_opens) {
+            if(do_tcp_opens == CONFIG_BOOLEAN_YES || (do_tcp_opens == CONFIG_BOOLEAN_AUTO && (snmp_root.tcp_ActiveOpens || snmp_root.tcp_PassiveOpens))) {
+                do_tcp_opens = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_ActiveOpens = NULL,
                               *rd_PassiveOpens = NULL;
@@ -758,9 +799,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 TCP Opens"
                             , "connections/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 2502
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_TCP + 5
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -778,7 +819,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_tcp_handshake) {
+            if(do_tcp_handshake == CONFIG_BOOLEAN_YES || (do_tcp_handshake == CONFIG_BOOLEAN_AUTO && (snmp_root.tcp_EstabResets || snmp_root.tcp_OutRsts || snmp_root.tcp_AttemptFails))) {
+                do_tcp_handshake = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_EstabResets = NULL,
                               *rd_OutRsts = NULL,
@@ -794,25 +837,25 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 TCP Handshake Issues"
                             , "events/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 2530
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_TCP + 30
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
                     rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
 
-                    rd_EstabResets   = rrddim_add(st, "EstabResets",   NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_OutRsts       = rrddim_add(st, "OutRsts",       NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_AttemptFails  = rrddim_add(st, "AttemptFails",  NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    rd_TCPSynRetrans = rrddim_add(st, "TCPSynRetrans", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_EstabResets     = rrddim_add(st, "EstabResets",          NULL,                1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_OutRsts         = rrddim_add(st, "OutRsts",              NULL,                1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_AttemptFails    = rrddim_add(st, "AttemptFails",         NULL,                1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_TCPSynRetrans   = rrddim_add(st, "TCPSynRetrans",        "SynRetrans",        1, 1, RRD_ALGORITHM_INCREMENTAL);
                 }
                 else rrdset_next(st);
 
-                rrddim_set_by_pointer(st, rd_EstabResets,   (collected_number)snmp_root.tcp_EstabResets);
-                rrddim_set_by_pointer(st, rd_OutRsts,       (collected_number)snmp_root.tcp_OutRsts);
-                rrddim_set_by_pointer(st, rd_AttemptFails,  (collected_number)snmp_root.tcp_AttemptFails);
-                rrddim_set_by_pointer(st, rd_TCPSynRetrans, tcpext_TCPSynRetrans);
+                rrddim_set_by_pointer(st, rd_EstabResets,     (collected_number)snmp_root.tcp_EstabResets);
+                rrddim_set_by_pointer(st, rd_OutRsts,         (collected_number)snmp_root.tcp_OutRsts);
+                rrddim_set_by_pointer(st, rd_AttemptFails,    (collected_number)snmp_root.tcp_AttemptFails);
+                rrddim_set_by_pointer(st, rd_TCPSynRetrans,   tcpext_TCPSynRetrans);
                 rrdset_done(st);
             }
         }
@@ -839,7 +882,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
             // --------------------------------------------------------------------
 
             // see http://net-snmp.sourceforge.net/docs/mibs/udp.html
-            if(do_udp_packets) {
+            if(do_udp_packets == CONFIG_BOOLEAN_YES || (do_udp_packets == CONFIG_BOOLEAN_AUTO && (snmp_root.udp_InDatagrams || snmp_root.udp_OutDatagrams))) {
+                do_udp_packets = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_InDatagrams = NULL,
                               *rd_OutDatagrams = NULL;
@@ -853,9 +898,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 UDP Packets"
                             , "packets/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 2602
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_UDP
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -872,7 +917,16 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_udp_errors) {
+            if(do_udp_errors == CONFIG_BOOLEAN_YES || (do_udp_errors == CONFIG_BOOLEAN_AUTO && (
+                    snmp_root.udp_InErrors
+                    || snmp_root.udp_NoPorts
+                    || snmp_root.udp_RcvbufErrors
+                    || snmp_root.udp_SndbufErrors
+                    || snmp_root.udp_InCsumErrors
+                    || snmp_root.udp_IgnoredMulti
+                    ))) {
+                do_udp_errors = CONFIG_BOOLEAN_YES;
+
                 static RRDSET *st = NULL;
                 static RRDDIM *rd_RcvbufErrors = NULL,
                               *rd_SndbufErrors = NULL,
@@ -890,9 +944,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                             , NULL
                             , "IPv4 UDP Errors"
                             , "events/s"
-                            , "proc"
-                            , "net/snmp"
-                            , 2701
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                            , NETDATA_CHART_PRIO_IPV4_UDP + 10
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -938,7 +992,18 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
 
             // --------------------------------------------------------------------
 
-            if(do_udplite_packets) {
+            if(do_udplite_packets == CONFIG_BOOLEAN_YES || (do_udplite_packets == CONFIG_BOOLEAN_AUTO && (
+                    snmp_root.udplite_InDatagrams
+                    || snmp_root.udplite_OutDatagrams
+                    || snmp_root.udplite_NoPorts
+                    || snmp_root.udplite_InErrors
+                    || snmp_root.udplite_InCsumErrors
+                    || snmp_root.udplite_RcvbufErrors
+                    || snmp_root.udplite_SndbufErrors
+                    || snmp_root.udplite_IgnoredMulti
+                    ))) {
+                do_udplite_packets = CONFIG_BOOLEAN_YES;
+
                 {
                     static RRDSET *st = NULL;
                     static RRDDIM *rd_InDatagrams = NULL,
@@ -953,9 +1018,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                                 , NULL
                                 , "IPv4 UDPLite Packets"
                                 , "packets/s"
-                                , "proc"
-                                , "net/snmp"
-                                , 2603
+                                , PLUGIN_PROC_NAME
+                                , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                                , NETDATA_CHART_PRIO_IPV4_UDPLITE
                                 , update_every
                                 , RRDSET_TYPE_LINE
                         );
@@ -988,9 +1053,9 @@ int do_proc_net_snmp(int update_every, usec_t dt) {
                                 , NULL
                                 , "IPv4 UDPLite Errors"
                                 , "packets/s"
-                                , "proc"
-                                , "net/snmp"
-                                , 2604
+                                , PLUGIN_PROC_NAME
+                                , PLUGIN_PROC_MODULE_NET_SNMP_NAME
+                                , NETDATA_CHART_PRIO_IPV4_UDPLITE + 10
                                 , update_every
                                 , RRDSET_TYPE_LINE);
 
diff --git a/src/proc_net_snmp6.c b/collectors/proc.plugin/proc_net_snmp6.c
index bd71b391a..f0084aa26 100644
--- a/src/proc_net_snmp6.c
+++ b/collectors/proc.plugin/proc_net_snmp6.c
@@ -1,6 +1,9 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 
 #define RRD_TYPE_NET_SNMP6          "ipv6"
+#define PLUGIN_PROC_MODULE_NET_SNMP6_NAME "/proc/net/snmp6"
 
 int do_proc_net_snmp6(int update_every, usec_t dt) {
     (void)dt;
@@ -289,9 +292,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 Bandwidth"
                     , "kilobits/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 502
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_SYSTEM_IPV6
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -325,9 +328,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 Packets"
                     , "packets/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 3000
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_PACKETS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -364,9 +367,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 Fragments Sent"
                     , "packets/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 3011
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_FRAGSOUT
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -410,9 +413,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 Fragments Reassembly"
                     , "packets/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 3012
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_FRAGSIN
                     , update_every
                     , RRDSET_TYPE_LINE);
             rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
@@ -465,9 +468,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 Errors"
                     , "packets/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 3002
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ERRORS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -514,9 +517,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 UDP Packets"
                     , "packets/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 3601
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_UDP_PACKETS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -560,9 +563,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 UDP Errors"
                     , "events/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 3701
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_UDP_ERRORS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -603,9 +606,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 UDPlite Packets"
                     , "packets/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 3602
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_UDPLITE_PACKETS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -648,9 +651,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 UDP Lite Errors"
                     , "events/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 3701
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_UDPLITE_ERRORS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -689,9 +692,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 Multicast Bandwidth"
                     , "kilobits/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 9000
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_MCAST
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -724,9 +727,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 Broadcast Bandwidth"
                     , "kilobits/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 8000
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_BCAST
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -759,9 +762,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 Multicast Packets"
                     , "packets/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 9500
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_MCAST_PACKETS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -794,9 +797,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 ICMP Messages"
                     , "messages/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 10000
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ICMP
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -828,9 +831,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 ICMP Redirects"
                     , "redirects/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 10050
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ICMP_REDIR
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -884,9 +887,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 ICMP Errors"
                     , "errors/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 10100
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ICMP_ERRORS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -944,9 +947,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 ICMP Echo"
                     , "messages/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 10200
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ICMP_ECHOS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -994,9 +997,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 ICMP Group Membership"
                     , "messages/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 10300
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ICMP_GROUPMEMB
                     , update_every
                     , RRDSET_TYPE_LINE);
 
@@ -1043,9 +1046,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 Router Messages"
                     , "messages/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 10400
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ICMP_ROUTER
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -1089,9 +1092,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 Neighbor Messages"
                     , "messages/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 10500
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ICMP_NEIGHBOR
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -1127,9 +1130,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 ICMP MLDv2 Reports"
                     , "reports/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 10600
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ICMP_LDV2
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -1181,9 +1184,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 ICMP Types"
                     , "messages/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 10700
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ICMP_TYPES
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -1239,9 +1242,9 @@ int do_proc_net_snmp6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 ECT Packets"
                     , "packets/s"
-                    , "proc"
-                    , "net/snmp6"
-                    , 10800
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SNMP6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_ECT
                     , update_every
                     , RRDSET_TYPE_LINE
             );
diff --git a/src/proc_net_sockstat.c b/collectors/proc.plugin/proc_net_sockstat.c
index db3070660..0c3b6e196 100644
--- a/src/proc_net_sockstat.c
+++ b/collectors/proc.plugin/proc_net_sockstat.c
@@ -1,4 +1,8 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME "/proc/net/sockstat"
 
 static struct proc_net_sockstat {
     kernel_uint_t sockets_used;
@@ -56,9 +60,9 @@ static int read_tcp_mem(void) {
 
     // fprintf(stderr, "TCP MEM low = %llu, pressure = %llu, high = %llu\n", low, pressure, high);
 
-    rrdvar_custom_host_variable_set(localhost, tcp_mem_low_threshold, low * sysconf(_SC_PAGESIZE) / 1024);
-    rrdvar_custom_host_variable_set(localhost, tcp_mem_pressure_threshold, pressure * sysconf(_SC_PAGESIZE) / 1024);
-    rrdvar_custom_host_variable_set(localhost, tcp_mem_high_threshold, high * sysconf(_SC_PAGESIZE) / 1024);
+    rrdvar_custom_host_variable_set(localhost, tcp_mem_low_threshold, low * sysconf(_SC_PAGESIZE) / 1024.0);
+    rrdvar_custom_host_variable_set(localhost, tcp_mem_pressure_threshold, pressure * sysconf(_SC_PAGESIZE) / 1024.0);
+    rrdvar_custom_host_variable_set(localhost, tcp_mem_high_threshold, high * sysconf(_SC_PAGESIZE) / 1024.0);
 
     return 0;
 }
@@ -229,9 +233,9 @@ int do_proc_net_sockstat(int update_every, usec_t dt) {
                     , NULL
                     , "IPv4 Sockets Used"
                     , "sockets"
-                    , "proc"
-                    , "net/sockstat"
-                    , 2400
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+                    , NETDATA_CHART_PRIO_IPV4_SOCKETS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -264,9 +268,9 @@ int do_proc_net_sockstat(int update_every, usec_t dt) {
                     , NULL
                     , "IPv4 TCP Sockets"
                     , "sockets"
-                    , "proc"
-                    , "net/sockstat"
-                    , 2500
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+                    , NETDATA_CHART_PRIO_IPV4_TCP_SOCKETS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -302,9 +306,9 @@ int do_proc_net_sockstat(int update_every, usec_t dt) {
                     , NULL
                     , "IPv4 TCP Sockets Memory"
                     , "KB"
-                    , "proc"
-                    , "net/sockstat"
-                    , 4000
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+                    , NETDATA_CHART_PRIO_IPV4_TCP_MEM
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -334,9 +338,9 @@ int do_proc_net_sockstat(int update_every, usec_t dt) {
                     , NULL
                     , "IPv4 UDP Sockets"
                     , "sockets"
-                    , "proc"
-                    , "net/sockstat"
-                    , 2600
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+                    , NETDATA_CHART_PRIO_IPV4_UDP
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -366,9 +370,9 @@ int do_proc_net_sockstat(int update_every, usec_t dt) {
                     , NULL
                     , "IPv4 UDP Sockets Memory"
                     , "KB"
-                    , "proc"
-                    , "net/sockstat"
-                    , 2603
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+                    , NETDATA_CHART_PRIO_IPV4_UDP_MEM
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -398,9 +402,9 @@ int do_proc_net_sockstat(int update_every, usec_t dt) {
                     , NULL
                     , "IPv4 UDPLITE Sockets"
                     , "sockets"
-                    , "proc"
-                    , "net/sockstat"
-                    , 2602
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+                    , NETDATA_CHART_PRIO_IPV4_UDPLITE
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -430,9 +434,9 @@ int do_proc_net_sockstat(int update_every, usec_t dt) {
                     , NULL
                     , "IPv4 RAW Sockets"
                     , "sockets"
-                    , "proc"
-                    , "net/sockstat"
-                    , 3010
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+                    , NETDATA_CHART_PRIO_IPV4_RAW
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -462,9 +466,9 @@ int do_proc_net_sockstat(int update_every, usec_t dt) {
                     , NULL
                     , "IPv4 FRAG Sockets"
                     , "fragments"
-                    , "proc"
-                    , "net/sockstat"
-                    , 3010
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+                    , NETDATA_CHART_PRIO_IPV4_FRAGMENTS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -494,9 +498,9 @@ int do_proc_net_sockstat(int update_every, usec_t dt) {
                     , NULL
                     , "IPv4 FRAG Sockets Memory"
                     , "KB"
-                    , "proc"
-                    , "net/sockstat"
-                    , 3020
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+                    , NETDATA_CHART_PRIO_IPV4_FRAGMENTS_MEM
                     , update_every
                     , RRDSET_TYPE_AREA
             );
diff --git a/src/proc_net_sockstat6.c b/collectors/proc.plugin/proc_net_sockstat6.c
index 97175ccf7..687b9bdeb 100644
--- a/src/proc_net_sockstat6.c
+++ b/collectors/proc.plugin/proc_net_sockstat6.c
@@ -1,4 +1,8 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_NET_SOCKSTAT6_NAME "/proc/net/sockstat6"
 
 static struct proc_net_sockstat6 {
     kernel_uint_t tcp6_inuse;
@@ -122,9 +126,9 @@ int do_proc_net_sockstat6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 TCP Sockets"
                     , "sockets"
-                    , "proc"
-                    , "net/sockstat6"
-                    , 3599
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_TCP
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -154,9 +158,9 @@ int do_proc_net_sockstat6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 UDP Sockets"
                     , "sockets"
-                    , "proc"
-                    , "net/sockstat6"
-                    , 3600
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_UDP
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -186,9 +190,9 @@ int do_proc_net_sockstat6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 UDPLITE Sockets"
                     , "sockets"
-                    , "proc"
-                    , "net/sockstat6"
-                    , 3601
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_UDPLITE
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -218,9 +222,9 @@ int do_proc_net_sockstat6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 RAW Sockets"
                     , "sockets"
-                    , "proc"
-                    , "net/sockstat6"
-                    , 3700
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_RAW
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -250,9 +254,9 @@ int do_proc_net_sockstat6(int update_every, usec_t dt) {
                     , NULL
                     , "IPv6 FRAG Sockets"
                     , "fragments"
-                    , "proc"
-                    , "net/sockstat6"
-                    , 3010
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_NET_SOCKSTAT6_NAME
+                    , NETDATA_CHART_PRIO_IPV6_FRAGMENTS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
diff --git a/src/proc_net_softnet_stat.c b/collectors/proc.plugin/proc_net_softnet_stat.c
index f3c117e16..7ec783e77 100644
--- a/src/proc_net_softnet_stat.c
+++ b/collectors/proc.plugin/proc_net_softnet_stat.c
@@ -1,4 +1,8 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_NET_SOFTNET_NAME "/proc/net/softnet_stat"
 
 static inline char *softnet_column_name(size_t column) {
     switch(column) {
@@ -87,9 +91,9 @@ int do_proc_net_softnet_stat(int update_every, usec_t dt) {
                 , "system.softnet_stat"
                 , "System softnet_stat"
                 , "events/s"
-                , "proc"
-                , "net/softnet_stat"
-                , 955
+                , PLUGIN_PROC_NAME
+                , PLUGIN_PROC_MODULE_NET_SOFTNET_NAME
+                , NETDATA_CHART_PRIO_SYSTEM_SOFTNET_STAT
                 , update_every
                 , RRDSET_TYPE_LINE
         );
@@ -123,9 +127,9 @@ int do_proc_net_softnet_stat(int update_every, usec_t dt) {
                         , "cpu.softnet_stat"
                         , title
                         , "events/s"
-                        , "proc"
-                        , "net/softnet_stat"
-                        , 4101 + l
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_NET_SOFTNET_NAME
+                        , NETDATA_CHART_PRIO_SOFTNET_PER_CORE + l
                         , update_every
                         , RRDSET_TYPE_LINE
                 );
diff --git a/src/proc_net_stat_conntrack.c b/collectors/proc.plugin/proc_net_stat_conntrack.c
index 363fbc199..f5257c0a0 100644
--- a/src/proc_net_stat_conntrack.c
+++ b/collectors/proc.plugin/proc_net_stat_conntrack.c
@@ -1,7 +1,10 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 
 #define RRD_TYPE_NET_STAT_NETFILTER     "netfilter"
 #define RRD_TYPE_NET_STAT_CONNTRACK     "conntrack"
+#define PLUGIN_PROC_MODULE_CONNTRACK_NAME "/proc/net/stat/nf_conntrack"
 
 int do_proc_net_stat_conntrack(int update_every, usec_t dt) {
     static procfile *ff = NULL;
@@ -140,9 +143,9 @@ int do_proc_net_stat_conntrack(int update_every, usec_t dt) {
                     , NULL
                     , "Connection Tracker Connections"
                     , "active connections"
-                    , "proc"
-                    , "net/stat/nf_conntrack"
-                    , 3000
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+                    , NETDATA_CHART_PRIO_NETFILTER_SOCKETS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -173,9 +176,9 @@ int do_proc_net_stat_conntrack(int update_every, usec_t dt) {
                     , NULL
                     , "Connection Tracker New Connections"
                     , "connections/s"
-                    , "proc"
-                    , "net/stat/nf_conntrack"
-                    , 3001
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+                    , NETDATA_CHART_PRIO_NETFILTER_NEW
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -210,9 +213,9 @@ int do_proc_net_stat_conntrack(int update_every, usec_t dt) {
                     , NULL
                     , "Connection Tracker Changes"
                     , "changes/s"
-                    , "proc"
-                    , "net/stat/nf_conntrack"
-                    , 3002
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+                    , NETDATA_CHART_PRIO_NETFILTER_CHANGES
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -247,9 +250,9 @@ int do_proc_net_stat_conntrack(int update_every, usec_t dt) {
                     , NULL
                     , "Connection Tracker Expectations"
                     , "expectations/s"
-                    , "proc"
-                    , "net/stat/nf_conntrack"
-                    , 3003
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+                    , NETDATA_CHART_PRIO_NETFILTER_EXPECT
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -284,9 +287,9 @@ int do_proc_net_stat_conntrack(int update_every, usec_t dt) {
                     , NULL
                     , "Connection Tracker Searches"
                     , "searches/s"
-                    , "proc"
-                    , "net/stat/nf_conntrack"
-                    , 3010
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+                    , NETDATA_CHART_PRIO_NETFILTER_SEARCH
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -322,9 +325,9 @@ int do_proc_net_stat_conntrack(int update_every, usec_t dt) {
                     , NULL
                     , "Connection Tracker Errors"
                     , "events/s"
-                    , "proc"
-                    , "net/stat/nf_conntrack"
-                    , 3005
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+                    , NETDATA_CHART_PRIO_NETFILTER_ERRORS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
diff --git a/src/proc_net_stat_synproxy.c b/collectors/proc.plugin/proc_net_stat_synproxy.c
index 0d6f6ee03..f0c1f47c1 100644
--- a/src/proc_net_stat_synproxy.c
+++ b/collectors/proc.plugin/proc_net_stat_synproxy.c
@@ -1,4 +1,8 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_SYNPROXY_NAME "/proc/net/stat/synproxy"
 
 #define RRD_TYPE_NET_STAT_NETFILTER         "netfilter"
 #define RRD_TYPE_NET_STAT_SYNPROXY          "synproxy"
@@ -68,9 +72,9 @@ int do_proc_net_stat_synproxy(int update_every, usec_t dt) {
                     , NULL
                     , "SYNPROXY Entries Used"
                     , "entries"
-                    , "proc"
-                    , "net/stat/synproxy"
-                    , 3304
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_SYNPROXY_NAME
+                    , NETDATA_CHART_PRIO_SYNPROXY_ENTRIES
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -98,9 +102,9 @@ int do_proc_net_stat_synproxy(int update_every, usec_t dt) {
                     , NULL
                     , "SYNPROXY SYN Packets received"
                     , "SYN/s"
-                    , "proc"
-                    , "net/stat/synproxy"
-                    , 3301
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_SYNPROXY_NAME
+                    , NETDATA_CHART_PRIO_SYNPROXY_SYN_RECEIVED
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -128,9 +132,9 @@ int do_proc_net_stat_synproxy(int update_every, usec_t dt) {
                     , NULL
                     , "SYNPROXY Connections Reopened"
                     , "connections/s"
-                    , "proc"
-                    , "net/stat/synproxy"
-                    , 3303
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_SYNPROXY_NAME
+                    , NETDATA_CHART_PRIO_SYNPROXY_CONN_OPEN
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -158,9 +162,9 @@ int do_proc_net_stat_synproxy(int update_every, usec_t dt) {
                     , NULL
                     , "SYNPROXY TCP Cookies"
                     , "cookies/s"
-                    , "proc"
-                    , "net/stat/synproxy"
-                    , 3302
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_SYNPROXY_NAME
+                    , NETDATA_CHART_PRIO_SYNPROXY_COOKIES
                     , update_every
                     , RRDSET_TYPE_LINE
             );
diff --git a/src/proc_self_mountinfo.c b/collectors/proc.plugin/proc_self_mountinfo.c
index 4ccdddff1..3f17ccce2 100644
--- a/src/proc_self_mountinfo.c
+++ b/collectors/proc.plugin/proc_self_mountinfo.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 
 // ----------------------------------------------------------------------------
 // taken from gnulib/mountlist.c
diff --git a/src/proc_self_mountinfo.h b/collectors/proc.plugin/proc_self_mountinfo.h
index a8d337539..15d63c786 100644
--- a/src/proc_self_mountinfo.h
+++ b/collectors/proc.plugin/proc_self_mountinfo.h
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_PROC_SELF_MOUNTINFO_H
 #define NETDATA_PROC_SELF_MOUNTINFO_H 1
 
diff --git a/src/proc_softirqs.c b/collectors/proc.plugin/proc_softirqs.c
index cd7440b00..d68c69bb7 100644
--- a/src/proc_softirqs.c
+++ b/collectors/proc.plugin/proc_softirqs.c
@@ -1,4 +1,8 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_SOFTIRQS_NAME "/proc/softirqs"
 
 #define MAX_INTERRUPT_NAME 50
 
@@ -51,15 +55,16 @@ static inline struct interrupt *get_interrupts_array(size_t lines, int cpus) {
 int do_proc_softirqs(int update_every, usec_t dt) {
     (void)dt;
     static procfile *ff = NULL;
-    static int cpus = -1, do_per_core = -1;
+    static int cpus = -1, do_per_core = CONFIG_BOOLEAN_INVALID;
     struct interrupt *irrs = NULL;
 
-    if(unlikely(do_per_core == -1)) do_per_core = config_get_boolean("plugin:proc:/proc/softirqs", "interrupts per core", 1);
+    if(unlikely(do_per_core == CONFIG_BOOLEAN_INVALID))
+        do_per_core = config_get_boolean_ondemand("plugin:proc:/proc/softirqs", "interrupts per core", CONFIG_BOOLEAN_AUTO);
 
     if(unlikely(!ff)) {
         char filename[FILENAME_MAX + 1];
         snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/softirqs");
-        ff = procfile_open(config_get("plugin:proc:/proc/softirqs", "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
+        ff = procfile_open(config_get("plugin:proc:/proc/softirqs", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
         if(unlikely(!ff)) return 1;
     }
 
@@ -105,10 +110,6 @@ int do_proc_softirqs(int update_every, usec_t dt) {
         irr->id = procfile_lineword(ff, l, 0);
         if(unlikely(!irr->id || !irr->id[0])) continue;
 
-        size_t idlen = strlen(irr->id);
-        if(unlikely(idlen && irr->id[idlen - 1] == ':'))
-            irr->id[idlen - 1] = '\0';
-
         int c;
         for(c = 0; c < cpus ;c++) {
             if(likely((c + 1) < (int)words))
@@ -136,9 +137,9 @@ int do_proc_softirqs(int update_every, usec_t dt) {
                 , NULL
                 , "System softirqs"
                 , "softirqs/s"
-                , "proc"
-                , "softirqs"
-                , 950
+                , PLUGIN_PROC_NAME
+                , PLUGIN_PROC_MODULE_SOFTIRQS_NAME
+                , NETDATA_CHART_PRIO_SYSTEM_SOFTIRQS
                 , update_every
                 , RRDSET_TYPE_STACKED
         );
@@ -148,34 +149,30 @@ int do_proc_softirqs(int update_every, usec_t dt) {
     for(l = 0; l < lines ;l++) {
         struct interrupt *irr = irrindex(irrs, l, cpus);
 
-        if(unlikely(!irr->used)) continue;
-
-        // some interrupt may have changed without changing the total number of lines
-        // if the same number of interrupts have been added and removed between two
-        // calls of this function.
-        if(unlikely(!irr->rd || strncmp(irr->name, irr->rd->name, MAX_INTERRUPT_NAME) != 0)) {
-            irr->rd = rrddim_find(st_system_softirqs, irr->id);
-
-            if(unlikely(!irr->rd))
+        if(irr->used && irr->total) {
+            // some interrupt may have changed without changing the total number of lines
+            // if the same number of interrupts have been added and removed between two
+            // calls of this function.
+            if(unlikely(!irr->rd || strncmp(irr->name, irr->rd->name, MAX_INTERRUPT_NAME) != 0)) {
                 irr->rd = rrddim_add(st_system_softirqs, irr->id, irr->name, 1, 1, RRD_ALGORITHM_INCREMENTAL);
-            else
                 rrddim_set_name(st_system_softirqs, irr->rd, irr->name);
 
-            // also reset per cpu RRDDIMs to avoid repeating strncmp() in the per core loop
-            if(likely(do_per_core)) {
-                int c;
-                for (c = 0; c < cpus ;c++) irr->cpu[c].rd = NULL;
+                // also reset per cpu RRDDIMs to avoid repeating strncmp() in the per core loop
+                if(likely(do_per_core != CONFIG_BOOLEAN_NO)) {
+                    int c;
+                    for(c = 0; c < cpus; c++) irr->cpu[c].rd = NULL;
+                }
             }
-        }
 
-        rrddim_set_by_pointer(st_system_softirqs, irr->rd, irr->total);
+            rrddim_set_by_pointer(st_system_softirqs, irr->rd, irr->total);
+        }
     }
 
     rrdset_done(st_system_softirqs);
 
     // --------------------------------------------------------------------
 
-    if(do_per_core) {
+    if(do_per_core != CONFIG_BOOLEAN_NO) {
         static RRDSET **core_st = NULL;
         static int old_cpus = 0;
 
@@ -214,9 +211,9 @@ int do_proc_softirqs(int update_every, usec_t dt) {
                         , "cpu.softirqs"
                         , title
                         , "softirqs/s"
-                        , "proc"
-                        , "softirqs"
-                        , 3000 + c
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_SOFTIRQS_NAME
+                        , NETDATA_CHART_PRIO_SOFTIRQS_PER_CORE + c
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -227,18 +224,14 @@ int do_proc_softirqs(int update_every, usec_t dt) {
             for(l = 0; l < lines ;l++) {
                 struct interrupt *irr = irrindex(irrs, l, cpus);
 
-                if(unlikely(!irr->used)) continue;
-
-                if(unlikely(!irr->cpu[c].rd)) {
-                    irr->cpu[c].rd = rrddim_find(core_st[c], irr->id);
-
-                    if(unlikely(!irr->cpu[c].rd))
+                if(irr->used && (do_per_core == CONFIG_BOOLEAN_YES || irr->cpu[c].value)) {
+                    if(unlikely(!irr->cpu[c].rd)) {
                         irr->cpu[c].rd = rrddim_add(core_st[c], irr->id, irr->name, 1, 1, RRD_ALGORITHM_INCREMENTAL);
-                    else
                         rrddim_set_name(core_st[c], irr->cpu[c].rd, irr->name);
-                }
+                    }
 
-                rrddim_set_by_pointer(core_st[c], irr->cpu[c].rd, irr->cpu[c].value);
+                    rrddim_set_by_pointer(core_st[c], irr->cpu[c].rd, irr->cpu[c].value);
+                }
             }
 
             rrdset_done(core_st[c]);
diff --git a/src/proc_spl_kstat_zfs.c b/collectors/proc.plugin/proc_spl_kstat_zfs.c
index 9d489d8e4..a96b236cb 100644
--- a/src/proc_spl_kstat_zfs.c
+++ b/collectors/proc.plugin/proc_spl_kstat_zfs.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 #include "zfs_common.h"
 
 #define ZFS_PROC_ARCSTATS "/proc/spl/kstat/zfs/arcstats"
@@ -146,8 +148,8 @@ int do_proc_spl_kstat_zfs_arcstats(int update_every, usec_t dt) {
     if(unlikely(arcstats.l2exist == -1))
         arcstats.l2exist = 0;
 
-    generate_charts_arcstats("proc", update_every);
-    generate_charts_arc_summary("proc", update_every);
+    generate_charts_arcstats(PLUGIN_PROC_NAME, ZFS_PROC_ARCSTATS, update_every);
+    generate_charts_arc_summary(PLUGIN_PROC_NAME, ZFS_PROC_ARCSTATS, update_every);
 
     return 0;
 }
diff --git a/src/proc_stat.c b/collectors/proc.plugin/proc_stat.c
index d1aefb73e..fb77df647 100644
--- a/src/proc_stat.c
+++ b/collectors/proc.plugin/proc_stat.c
@@ -1,7 +1,11 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_STAT_NAME "/proc/stat"
 
 struct per_core_single_number_file {
-    char found:1;
+    unsigned char found:1;
     const char *filename;
     int fd;
     collected_number value;
@@ -121,6 +125,8 @@ int do_proc_stat(int update_every, usec_t dt) {
     static int do_cpu = -1, do_cpu_cores = -1, do_interrupts = -1, do_context = -1, do_forks = -1, do_processes = -1, do_core_throttle_count = -1, do_package_throttle_count = -1, do_scaling_cur_freq = -1;
     static uint32_t hash_intr, hash_ctxt, hash_processes, hash_procs_running, hash_procs_blocked;
     static char *core_throttle_count_filename = NULL, *package_throttle_count_filename = NULL, *scaling_cur_freq_filename = NULL;
+    static RRDVAR *cpus_var = NULL;
+    size_t cores_found = (size_t)processors;
 
     if(unlikely(do_cpu == -1)) {
         do_cpu                    = config_get_boolean("plugin:proc:/proc/stat", "cpu utilization", CONFIG_BOOLEAN_YES);
@@ -196,6 +202,7 @@ int do_proc_stat(int update_every, usec_t dt) {
             }
 
             size_t core    = (row_key[3] == '\0') ? 0 : str2ul(&row_key[3]) + 1;
+            if(core > 0) cores_found = core;
 
             if(likely((core == 0 && do_cpu) || (core > 0 && do_cpu_cores))) {
                 char *id;
@@ -236,17 +243,17 @@ int do_proc_stat(int update_every, usec_t dt) {
                         type = "system";
                         context = "system.cpu";
                         family = id;
-                        priority = 100;
+                        priority = NETDATA_CHART_PRIO_SYSTEM_CPU;
                     }
                     else {
                         title = "Core utilization";
                         type = "cpu";
                         context = "cpu.cpu";
                         family = "utilization";
-                        priority = 1000;
+                        priority = NETDATA_CHART_PRIO_CPU_PER_CORE;
 
-                        // FIXME: check for /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq
-                        // FIXME: check for /sys/devices/system/cpu/cpu*/cpufreq/stats/time_in_state
+                        // TODO: check for /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq
+                        // TODO: check for /sys/devices/system/cpu/cpu*/cpufreq/stats/time_in_state
 
                         char filename[FILENAME_MAX + 1];
                         struct stat stbuf;
@@ -287,9 +294,9 @@ int do_proc_stat(int update_every, usec_t dt) {
                             , context
                             , title
                             , "percentage"
-                            , "proc"
-                            , "stat"
-                            , priority
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_STAT_NAME
+                            , priority + core
                             , update_every
                             , RRDSET_TYPE_STACKED
                     );
@@ -308,6 +315,9 @@ int do_proc_stat(int update_every, usec_t dt) {
                     cpu_chart->rd_iowait     = rrddim_add(cpu_chart->st, "iowait",     NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
                     cpu_chart->rd_idle       = rrddim_add(cpu_chart->st, "idle",       NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
                     rrddim_hide(cpu_chart->st, "idle");
+
+                    if(unlikely(core == 0 && cpus_var == NULL))
+                        cpus_var = rrdvar_custom_host_variable_create(localhost, "active_processors");
                 }
                 else rrdset_next(cpu_chart->st);
 
@@ -339,9 +349,9 @@ int do_proc_stat(int update_every, usec_t dt) {
                             , NULL
                             , "CPU Interrupts"
                             , "interrupts/s"
-                            , "proc"
-                            , "stat"
-                            , 900
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_STAT_NAME
+                            , NETDATA_CHART_PRIO_SYSTEM_INTR
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -371,9 +381,9 @@ int do_proc_stat(int update_every, usec_t dt) {
                             , NULL
                             , "CPU Context Switches"
                             , "context switches/s"
-                            , "proc"
-                            , "stat"
-                            , 800
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_STAT_NAME
+                            , NETDATA_CHART_PRIO_SYSTEM_CTXT
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -412,9 +422,9 @@ int do_proc_stat(int update_every, usec_t dt) {
                     , NULL
                     , "Started Processes"
                     , "processes/s"
-                    , "proc"
-                    , "stat"
-                    , 700
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_STAT_NAME
+                    , NETDATA_CHART_PRIO_SYSTEM_FORKS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -444,9 +454,9 @@ int do_proc_stat(int update_every, usec_t dt) {
                     , NULL
                     , "System Processes"
                     , "processes"
-                    , "proc"
-                    , "stat"
-                    , 600
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_STAT_NAME
+                    , NETDATA_CHART_PRIO_SYSTEM_PROCESSES
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -478,9 +488,9 @@ int do_proc_stat(int update_every, usec_t dt) {
                             , "cpu.core_throttling"
                             , "Core Thermal Throttling Events"
                             , "events/s"
-                            , "proc"
-                            , "stat"
-                            , 5001
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_STAT_NAME
+                            , NETDATA_CHART_PRIO_CORE_THROTTLING
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -508,9 +518,9 @@ int do_proc_stat(int update_every, usec_t dt) {
                             , "cpu.package_throttling"
                             , "Package Thermal Throttling Events"
                             , "events/s"
-                            , "proc"
-                            , "stat"
-                            , 5002
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_STAT_NAME
+                            , NETDATA_CHART_PRIO_PACKAGE_THROTTLING
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
@@ -538,8 +548,8 @@ int do_proc_stat(int update_every, usec_t dt) {
                             , "cpu.scaling_cur_freq"
                             , "Per CPU Core, Current CPU Scaling Frequency"
                             , "MHz"
-                            , "proc"
-                            , "stat"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_STAT_NAME
                             , 5003
                             , update_every
                             , RRDSET_TYPE_LINE
@@ -553,5 +563,8 @@ int do_proc_stat(int update_every, usec_t dt) {
         }
     }
 
+    if(cpus_var)
+        rrdvar_custom_host_variable_set(localhost, cpus_var, cores_found);
+
     return 0;
 }
diff --git a/src/proc_sys_kernel_random_entropy_avail.c b/collectors/proc.plugin/proc_sys_kernel_random_entropy_avail.c
index ca4d7657c..20d2116ce 100644
--- a/src/proc_sys_kernel_random_entropy_avail.c
+++ b/collectors/proc.plugin/proc_sys_kernel_random_entropy_avail.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 
 int do_proc_sys_kernel_random_entropy_avail(int update_every, usec_t dt) {
     (void)dt;
@@ -29,9 +31,9 @@ int do_proc_sys_kernel_random_entropy_avail(int update_every, usec_t dt) {
                 , NULL
                 , "Available Entropy"
                 , "entropy"
-                , "proc"
-                , "sys/kernel/random/entropy_avail"
-                , 1000
+                , PLUGIN_PROC_NAME
+                , "/proc/sys/kernel/random/entropy_avail"
+                , NETDATA_CHART_PRIO_SYSTEM_ENTROPY
                 , update_every
                 , RRDSET_TYPE_LINE
         );
diff --git a/src/proc_uptime.c b/collectors/proc.plugin/proc_uptime.c
index 259de4760..142ae2d0c 100644
--- a/src/proc_uptime.c
+++ b/collectors/proc.plugin/proc_uptime.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 
 static inline collected_number uptime_from_boottime(void) {
 #ifdef CLOCK_BOOTTIME_IS_AVAILABLE
@@ -83,9 +85,9 @@ int do_proc_uptime(int update_every, usec_t dt) {
                 , NULL
                 , "System Uptime"
                 , "seconds"
-                , "proc"
-                , "uptime"
-                , 1000
+                , PLUGIN_PROC_NAME
+                , "/proc/uptime"
+                , NETDATA_CHART_PRIO_SYSTEM_UPTIME
                 , update_every
                 , RRDSET_TYPE_LINE
         );
diff --git a/src/proc_vmstat.c b/collectors/proc.plugin/proc_vmstat.c
index 52e88d888..f7c93c20a 100644
--- a/src/proc_vmstat.c
+++ b/collectors/proc.plugin/proc_vmstat.c
@@ -1,4 +1,8 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_VMSTAT_NAME "/proc/vmstat"
 
 int do_proc_vmstat(int update_every, usec_t dt) {
     (void)dt;
@@ -102,9 +106,9 @@ int do_proc_vmstat(int update_every, usec_t dt) {
                     , NULL
                     , "Swap I/O"
                     , "kilobytes/s"
-                    , "proc"
-                    , "vmstat"
-                    , 250
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_VMSTAT_NAME
+                    , NETDATA_CHART_PRIO_SYSTEM_SWAPIO
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -134,9 +138,9 @@ int do_proc_vmstat(int update_every, usec_t dt) {
                     , NULL
                     , "Memory Paged from/to disk"
                     , "kilobytes/s"
-                    , "proc"
-                    , "vmstat"
-                    , 151
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_VMSTAT_NAME
+                    , NETDATA_CHART_PRIO_SYSTEM_PGPGIO
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -166,8 +170,8 @@ int do_proc_vmstat(int update_every, usec_t dt) {
                     , NULL
                     , "Memory Page Faults"
                     , "page faults/s"
-                    , "proc"
-                    , "vmstat"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_VMSTAT_NAME
                     , NETDATA_CHART_PRIO_MEM_SYSTEM_PGFAULTS
                     , update_every
                     , RRDSET_TYPE_LINE
@@ -211,8 +215,8 @@ int do_proc_vmstat(int update_every, usec_t dt) {
                     , NULL
                     , "NUMA events"
                     , "events/s"
-                    , "proc"
-                    , "vmstat"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_VMSTAT_NAME
                     , NETDATA_CHART_PRIO_MEM_NUMA
                     , update_every
                     , RRDSET_TYPE_LINE
diff --git a/src/sys_devices_system_edac_mc.c b/collectors/proc.plugin/sys_devices_system_edac_mc.c
index caa16192e..03cbfff83 100644
--- a/src/sys_devices_system_edac_mc.c
+++ b/collectors/proc.plugin/sys_devices_system_edac_mc.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 
 struct mc {
     char *name;
@@ -140,9 +142,9 @@ int do_proc_sys_devices_system_edac_mc(int update_every, usec_t dt) {
                     , NULL
                     , "ECC Memory Correctable Errors"
                     , "errors"
-                    , "proc"
+                    , PLUGIN_PROC_NAME
                     , "/sys/devices/system/edac/mc"
-                    , NETDATA_CHART_PRIO_MEM_HW + 50
+                    , NETDATA_CHART_PRIO_MEM_HW_ECC_CE
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -178,9 +180,9 @@ int do_proc_sys_devices_system_edac_mc(int update_every, usec_t dt) {
                     , NULL
                     , "ECC Memory Uncorrectable Errors"
                     , "errors"
-                    , "proc"
+                    , PLUGIN_PROC_NAME
                     , "/sys/devices/system/edac/mc"
-                    , NETDATA_CHART_PRIO_MEM_HW + 60
+                    , NETDATA_CHART_PRIO_MEM_HW_ECC_UE
                     , update_every
                     , RRDSET_TYPE_LINE
             );
diff --git a/src/sys_devices_system_node.c b/collectors/proc.plugin/sys_devices_system_node.c
index d04c8dc30..6e6d0acca 100644
--- a/src/sys_devices_system_node.c
+++ b/collectors/proc.plugin/sys_devices_system_node.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
 
 struct node {
     char *name;
@@ -105,9 +107,9 @@ int do_proc_sys_devices_system_node(int update_every, usec_t dt) {
                             , NULL
                             , "NUMA events"
                             , "events/s"
-                            , "proc"
+                            , PLUGIN_PROC_NAME
                             , "/sys/devices/system/node"
-                            , NETDATA_CHART_PRIO_MEM_NUMA + 10
+                            , NETDATA_CHART_PRIO_MEM_NUMA_NODES
                             , update_every
                             , RRDSET_TYPE_LINE
                     );
diff --git a/src/sys_fs_btrfs.c b/collectors/proc.plugin/sys_fs_btrfs.c
index a8dfb5c91..ed980cea5 100644
--- a/src/sys_fs_btrfs.c
+++ b/collectors/proc.plugin/sys_fs_btrfs.c
@@ -1,4 +1,8 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_BTRFS_NAME "/sys/fs/btrfs"
 
 typedef struct btrfs_disk {
     char *name;
@@ -171,12 +175,16 @@ static inline int find_btrfs_disks(BTRFS_NODE *node, const char *path) {
             snprintfz(filename, FILENAME_MAX, "%s/%s/size", path, de->d_name);
             d->size_filename = strdupz(filename);
 
-            // for disks
-            snprintfz(filename, FILENAME_MAX, "%s/%s/queue/hw_sector_size", path, de->d_name);
+            // for bcache
+            snprintfz(filename, FILENAME_MAX, "%s/%s/bcache/../queue/hw_sector_size", path, de->d_name);
             struct stat sb;
-            if(stat(filename, &sb) == -1)
-                // for partitions
-                snprintfz(filename, FILENAME_MAX, "%s/%s/../queue/hw_sector_size", path, de->d_name);
+            if(stat(filename, &sb) == -1) {
+                // for disks
+                snprintfz(filename, FILENAME_MAX, "%s/%s/queue/hw_sector_size", path, de->d_name);
+                if(stat(filename, &sb) == -1)
+                    // for partitions
+                    snprintfz(filename, FILENAME_MAX, "%s/%s/../queue/hw_sector_size", path, de->d_name);
+            }
 
             d->hw_sector_size_filename = strdupz(filename);
 
@@ -538,7 +546,7 @@ int do_sys_fs_btrfs(int update_every, usec_t dt) {
 
                 snprintf(id, RRD_ID_LENGTH_MAX, "disk_%s", node->id);
                 snprintf(name, RRD_ID_LENGTH_MAX, "disk_%s", node->label);
-                snprintf(title, 200, "BTRFS Disk Allocation for %s", node->label);
+                snprintf(title, 200, "BTRFS Physical Disk Allocation for %s", node->label);
 
                 netdata_fix_chart_id(id);
                 netdata_fix_chart_name(name);
@@ -551,20 +559,20 @@ int do_sys_fs_btrfs(int update_every, usec_t dt) {
                         , "btrfs.disk"
                         , title
                         , "MB"
-                        , "proc"
-                        , "sys/fs/btrfs"
-                        , 2300
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_BTRFS_NAME
+                        , NETDATA_CHART_PRIO_BTRFS_DISK
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
 
-                node->rd_allocation_disks_unallocated = rrddim_add(node->st_allocation_disks, "unallocated", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
-                node->rd_allocation_disks_data_used = rrddim_add(node->st_allocation_disks, "data_used", "data used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
-                node->rd_allocation_disks_data_free = rrddim_add(node->st_allocation_disks, "data_free", "data free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
-                node->rd_allocation_disks_metadata_used = rrddim_add(node->st_allocation_disks, "meta_used", "meta used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_unallocated   = rrddim_add(node->st_allocation_disks, "unallocated", NULL,      1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_data_free     = rrddim_add(node->st_allocation_disks, "data_free", "data free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_data_used     = rrddim_add(node->st_allocation_disks, "data_used", "data used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
                 node->rd_allocation_disks_metadata_free = rrddim_add(node->st_allocation_disks, "meta_free", "meta free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
-                node->rd_allocation_disks_system_used = rrddim_add(node->st_allocation_disks, "sys_used", "sys used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
-                node->rd_allocation_disks_system_free = rrddim_add(node->st_allocation_disks, "sys_free", "sys free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_metadata_used = rrddim_add(node->st_allocation_disks, "meta_used", "meta used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_system_free   = rrddim_add(node->st_allocation_disks, "sys_free",  "sys free",  1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_system_used   = rrddim_add(node->st_allocation_disks, "sys_used",  "sys used",  1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
             }
             else rrdset_next(node->st_allocation_disks);
 
@@ -607,9 +615,9 @@ int do_sys_fs_btrfs(int update_every, usec_t dt) {
                         , "btrfs.data"
                         , title
                         , "MB"
-                        , "proc"
-                        , "sys/fs/btrfs"
-                        , 2301
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_BTRFS_NAME
+                        , NETDATA_CHART_PRIO_BTRFS_DATA
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -648,9 +656,9 @@ int do_sys_fs_btrfs(int update_every, usec_t dt) {
                         , "btrfs.metadata"
                         , title
                         , "MB"
-                        , "proc"
-                        , "sys/fs/btrfs"
-                        , 2302
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_BTRFS_NAME
+                        , NETDATA_CHART_PRIO_BTRFS_METADATA
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
@@ -691,9 +699,9 @@ int do_sys_fs_btrfs(int update_every, usec_t dt) {
                         , "btrfs.system"
                         , title
                         , "MB"
-                        , "proc"
-                        , "sys/fs/btrfs"
-                        , 2303
+                        , PLUGIN_PROC_NAME
+                        , PLUGIN_PROC_MODULE_BTRFS_NAME
+                        , NETDATA_CHART_PRIO_BTRFS_SYSTEM
                         , update_every
                         , RRDSET_TYPE_STACKED
                 );
diff --git a/src/sys_kernel_mm_ksm.c b/collectors/proc.plugin/sys_kernel_mm_ksm.c
index 7ca1366b4..0f5c79c49 100644
--- a/src/sys_kernel_mm_ksm.c
+++ b/collectors/proc.plugin/sys_kernel_mm_ksm.c
@@ -1,4 +1,8 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_KSM_NAME "/sys/kernel/mm/ksm"
 
 typedef struct ksm_name_value {
     char filename[FILENAME_MAX + 1];
@@ -102,8 +106,8 @@ int do_sys_kernel_mm_ksm(int update_every, usec_t dt) {
                     , NULL
                     , "Kernel Same Page Merging"
                     , "MB"
-                    , "proc"
-                    , "/sys/kernel/mm/ksm"
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_KSM_NAME
                     , NETDATA_CHART_PRIO_MEM_KSM
                     , update_every
                     , RRDSET_TYPE_AREA
@@ -142,9 +146,9 @@ int do_sys_kernel_mm_ksm(int update_every, usec_t dt) {
                     , NULL
                     , "Kernel Same Page Merging Savings"
                     , "MB"
-                    , "proc"
-                    , "/sys/kernel/mm/ksm"
-                    , NETDATA_CHART_PRIO_MEM_KSM + 1
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_KSM_NAME
+                    , NETDATA_CHART_PRIO_MEM_KSM_SAVINGS
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -176,9 +180,9 @@ int do_sys_kernel_mm_ksm(int update_every, usec_t dt) {
                     , NULL
                     , "Kernel Same Page Merging Effectiveness"
                     , "percentage"
-                    , "proc"
-                    , "/sys/kernel/mm/ksm"
-                    , NETDATA_CHART_PRIO_MEM_KSM + 2
+                    , PLUGIN_PROC_NAME
+                    , PLUGIN_PROC_MODULE_KSM_NAME
+                    , NETDATA_CHART_PRIO_MEM_KSM_RATIOS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
diff --git a/src/zfs_common.c b/collectors/proc.plugin/zfs_common.c
index 05935dd0f..1aaceb908 100644
--- a/src/zfs_common.c
+++ b/collectors/proc.plugin/zfs_common.c
@@ -1,9 +1,10 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "zfs_common.h"
 
 struct arcstats arcstats = { 0 };
 
-void generate_charts_arcstats(const char *plugin, int update_every) {
+void generate_charts_arcstats(const char *plugin, const char *module, int update_every) {
 
     // ARC reads
     unsigned long long aread = arcstats.hits + arcstats.misses;
@@ -47,8 +48,8 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
                     , "ZFS ARC Size"
                     , "MB"
                     , plugin
-                    , "zfs"
-                    , 2500
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_ARC_SIZE
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -85,8 +86,8 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
                     , "ZFS L2 ARC Size"
                     , "MB"
                     , plugin
-                    , "zfs"
-                    , 2500
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_L2_SIZE
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -122,8 +123,8 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
                     , "ZFS Reads"
                     , "reads/s"
                     , plugin
-                    , "zfs"
-                    , 2510
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_READS
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -167,8 +168,8 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
                     , "ZFS ARC L2 Read/Write Rate"
                     , "kilobytes/s"
                     , plugin
-                    , "zfs"
-                    , 2700
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_IO
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -201,8 +202,8 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
                     , "ZFS ARC Hits"
                     , "percentage"
                     , plugin
-                    , "zfs"
-                    , 2520
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_HITS
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -235,8 +236,8 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
                     , "ZFS Demand Hits"
                     , "percentage"
                     , plugin
-                    , "zfs"
-                    , 2530
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_DHITS
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -269,8 +270,8 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
                     , "ZFS Prefetch Hits"
                     , "percentage"
                     , plugin
-                    , "zfs"
-                    , 2540
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_PHITS
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -303,8 +304,8 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
                     , "ZFS Metadata Hits"
                     , "percentage"
                     , plugin
-                    , "zfs"
-                    , 2550
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_MHITS
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -337,8 +338,8 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
                     , "ZFS L2 Hits"
                     , "percentage"
                     , plugin
-                    , "zfs"
-                    , 2560
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_L2HITS
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -373,8 +374,8 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
                     , "ZFS List Hits"
                     , "hits/s"
                     , plugin
-                    , "zfs"
-                    , 2600
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_LIST_HITS
                     , update_every
                     , RRDSET_TYPE_AREA
             );
@@ -395,7 +396,7 @@ void generate_charts_arcstats(const char *plugin, int update_every) {
     }
 }
 
-void generate_charts_arc_summary(const char *plugin, int update_every) {
+void generate_charts_arc_summary(const char *plugin, const char *module, int update_every) {
     unsigned long long arc_accesses_total = arcstats.hits + arcstats.misses;
     unsigned long long real_hits = arcstats.mfu_hits + arcstats.mru_hits;
     unsigned long long real_misses = arc_accesses_total - real_hits;
@@ -432,8 +433,8 @@ void generate_charts_arc_summary(const char *plugin, int update_every) {
                     , "ZFS ARC Size Breakdown"
                     , "percentage"
                     , plugin
-                    , "zfs"
-                    , 2520
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_ARC_SIZE_BREAKDOWN
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -471,8 +472,8 @@ void generate_charts_arc_summary(const char *plugin, int update_every) {
                     , "ZFS Memory Operations"
                     , "operations/s"
                     , plugin
-                    , "zfs"
-                    , 2523
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_MEMORY_OPS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -517,8 +518,8 @@ void generate_charts_arc_summary(const char *plugin, int update_every) {
                     , "ZFS Important Operations"
                     , "operations/s"
                     , plugin
-                    , "zfs"
-                    , 2522
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_IMPORTANT_OPS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -555,8 +556,8 @@ void generate_charts_arc_summary(const char *plugin, int update_every) {
                     , "ZFS Actual Cache Hits"
                     , "percentage"
                     , plugin
-                    , "zfs"
-                    , 2519
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_ACTUAL_HITS
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -589,8 +590,8 @@ void generate_charts_arc_summary(const char *plugin, int update_every) {
                     , "ZFS Data Demand Efficiency"
                     , "percentage"
                     , plugin
-                    , "zfs"
-                    , 2531
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_DEMAND_DATA_HITS
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -623,8 +624,8 @@ void generate_charts_arc_summary(const char *plugin, int update_every) {
                     , "ZFS Data Prefetch Efficiency"
                     , "percentage"
                     , plugin
-                    , "zfs"
-                    , 2532
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_PREFETCH_DATA_HITS
                     , update_every
                     , RRDSET_TYPE_STACKED
             );
@@ -657,8 +658,8 @@ void generate_charts_arc_summary(const char *plugin, int update_every) {
                     , "ZFS ARC Hash Elements"
                     , "elements"
                     , plugin
-                    , "zfs"
-                    , 2800
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_HASH_ELEMENTS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
@@ -691,8 +692,8 @@ void generate_charts_arc_summary(const char *plugin, int update_every) {
                     , "ZFS ARC Hash Chains"
                     , "chains"
                     , plugin
-                    , "zfs"
-                    , 2810
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_HASH_CHAINS
                     , update_every
                     , RRDSET_TYPE_LINE
             );
diff --git a/src/zfs_common.h b/collectors/proc.plugin/zfs_common.h
index 4494e70ca..fab54f59a 100644
--- a/src/zfs_common.h
+++ b/collectors/proc.plugin/zfs_common.h
@@ -1,5 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_ZFS_COMMON_H
-#define NETDATA_ZFS_COMMON_H
+#define NETDATA_ZFS_COMMON_H 1
+
+#include "../../daemon/common.h"
 
 #define ZFS_FAMILY_SIZE "size"
 #define ZFS_FAMILY_EFFICIENCY "efficiency"
@@ -105,7 +109,7 @@ struct arcstats {
     int l2exist;
 };
 
-void generate_charts_arcstats(const char *plugin, int update_every);
-void generate_charts_arc_summary(const char *plugin, int update_every);
+void generate_charts_arcstats(const char *plugin, const char *module, int update_every);
+void generate_charts_arc_summary(const char *plugin, const char *module, int update_every);
 
 #endif //NETDATA_ZFS_COMMON_H
diff --git a/python.d/Makefile.am b/collectors/python.d.plugin/Makefile.am
index a5fcc7394..5f214e436 100644
--- a/python.d/Makefile.am
+++ b/collectors/python.d.plugin/Makefile.am
@@ -1,73 +1,110 @@
-MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 CLEANFILES = \
-    python-modules-installer.sh \
+    python.d.plugin \
     $(NULL)
 
 include $(top_srcdir)/build/subst.inc
-
 SUFFIXES = .in
 
+dist_libconfig_DATA = \
+    python.d.conf \
+    $(NULL)
+
+dist_plugins_SCRIPTS = \
+    python.d.plugin \
+    $(NULL)
+
+dist_noinst_DATA = \
+    python.d.plugin.in \
+    README.md \
+    $(NULL)
+
 dist_python_SCRIPTS = \
-    python-modules-installer.sh \
     $(NULL)
 
 dist_python_DATA = \
-    README.md \
-    apache.chart.py \
-    beanstalk.chart.py \
-    bind_rndc.chart.py \
-    ceph.chart.py \
-    chrony.chart.py \
-    couchdb.chart.py \
-    cpufreq.chart.py \
-    cpuidle.chart.py \
-    dns_query_time.chart.py \
-    dnsdist.chart.py \
-    dovecot.chart.py \
-    elasticsearch.chart.py \
-    example.chart.py \
-    exim.chart.py \
-    fail2ban.chart.py \
-    freeradius.chart.py \
-    go_expvar.chart.py \
-    haproxy.chart.py \
-    hddtemp.chart.py \
-    httpcheck.chart.py \
-    icecast.chart.py \
-    ipfs.chart.py \
-    isc_dhcpd.chart.py \
-    mdstat.chart.py \
-    memcached.chart.py \
-    mongodb.chart.py \
-    mysql.chart.py \
-    nginx.chart.py \
-    nginx_plus.chart.py \
-    nsd.chart.py \
-    ntpd.chart.py \
-    ovpn_status_log.chart.py \
-    phpfpm.chart.py \
-    portcheck.chart.py \
-    postfix.chart.py \
-    postgres.chart.py \
-    powerdns.chart.py \
-    rabbitmq.chart.py \
-    redis.chart.py \
-    retroshare.chart.py \
-    samba.chart.py \
-    sensors.chart.py \
-    springboot.chart.py \
-    squid.chart.py \
-    smartd_log.chart.py \
-    tomcat.chart.py \
-    traefik.chart.py \
-    varnish.chart.py \
-    web_log.chart.py \
     $(NULL)
 
+userpythonconfigdir=$(configdir)/python.d
+dist_userpythonconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+pythonconfigdir=$(libconfigdir)/python.d
+dist_pythonconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+include adaptec_raid/Makefile.inc
+include apache/Makefile.inc
+include beanstalk/Makefile.inc
+include bind_rndc/Makefile.inc
+include boinc/Makefile.inc
+include ceph/Makefile.inc
+include chrony/Makefile.inc
+include couchdb/Makefile.inc
+include cpufreq/Makefile.inc
+include cpuidle/Makefile.inc
+include dnsdist/Makefile.inc
+include dns_query_time/Makefile.inc
+include dockerd/Makefile.inc
+include dovecot/Makefile.inc
+include elasticsearch/Makefile.inc
+include example/Makefile.inc
+include exim/Makefile.inc
+include fail2ban/Makefile.inc
+include freeradius/Makefile.inc
+include go_expvar/Makefile.inc
+include haproxy/Makefile.inc
+include hddtemp/Makefile.inc
+include httpcheck/Makefile.inc
+include icecast/Makefile.inc
+include ipfs/Makefile.inc
+include isc_dhcpd/Makefile.inc
+include linux_power_supply/Makefile.inc
+include litespeed/Makefile.inc
+include logind/Makefile.inc
+include mdstat/Makefile.inc
+include megacli/Makefile.inc
+include memcached/Makefile.inc
+include mongodb/Makefile.inc
+include monit/Makefile.inc
+include mysql/Makefile.inc
+include nginx/Makefile.inc
+include nginx_plus/Makefile.inc
+include nsd/Makefile.inc
+include ntpd/Makefile.inc
+include ovpn_status_log/Makefile.inc
+include phpfpm/Makefile.inc
+include portcheck/Makefile.inc
+include postfix/Makefile.inc
+include postgres/Makefile.inc
+include powerdns/Makefile.inc
+include proxysql/Makefile.inc
+include puppet/Makefile.inc
+include rabbitmq/Makefile.inc
+include redis/Makefile.inc
+include rethinkdbs/Makefile.inc
+include retroshare/Makefile.inc
+include samba/Makefile.inc
+include sensors/Makefile.inc
+include smartd_log/Makefile.inc
+include spigotmc/Makefile.inc
+include springboot/Makefile.inc
+include squid/Makefile.inc
+include tomcat/Makefile.inc
+include traefik/Makefile.inc
+include unbound/Makefile.inc
+include uwsgi/Makefile.inc
+include varnish/Makefile.inc
+include w1sensor/Makefile.inc
+include web_log/Makefile.inc
+
 pythonmodulesdir=$(pythondir)/python_modules
 dist_pythonmodules_DATA = \
     python_modules/__init__.py \
-    python_modules/base.py \
     $(NULL)
 
 basesdir=$(pythonmodulesdir)/bases
@@ -95,6 +132,9 @@ dist_third_party_DATA = \
     python_modules/third_party/__init__.py \
     python_modules/third_party/ordereddict.py \
     python_modules/third_party/lm_sensors.py \
+    python_modules/third_party/mcrcon.py \
+    python_modules/third_party/boinc_client.py \
+    python_modules/third_party/monotonic.py \
     $(NULL)
 
 pythonyaml2dir=$(pythonmodulesdir)/pyyaml2
diff --git a/collectors/python.d.plugin/Makefile.in b/collectors/python.d.plugin/Makefile.in
new file mode 100644
index 000000000..ca2743d58
--- /dev/null
+++ b/collectors/python.d.plugin/Makefile.in
@@ -0,0 +1,1987 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
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+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+# THIS IS NOT A COMPLETE Makefile
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
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+# THIS IS NOT A COMPLETE Makefile
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
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+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
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+# THIS IS NOT A COMPLETE Makefile
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+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
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+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
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+# SPDX-License-Identifier: GPL-3.0-or-later
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+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+
+VPATH = @srcdir@
+am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
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+install_sh_DATA = $(install_sh) -c -m 644
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+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
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+host_triplet = @host@
+DIST_COMMON = $(top_srcdir)/build/subst.inc \
+	$(srcdir)/adaptec_raid/Makefile.inc \
+	$(srcdir)/apache/Makefile.inc $(srcdir)/beanstalk/Makefile.inc \
+	$(srcdir)/bind_rndc/Makefile.inc $(srcdir)/boinc/Makefile.inc \
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+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+
+# install these files
+dist_python_DATA = $(NULL) adaptec_raid/adaptec_raid.chart.py \
+	apache/apache.chart.py beanstalk/beanstalk.chart.py \
+	bind_rndc/bind_rndc.chart.py boinc/boinc.chart.py \
+	ceph/ceph.chart.py chrony/chrony.chart.py \
+	couchdb/couchdb.chart.py cpufreq/cpufreq.chart.py \
+	cpuidle/cpuidle.chart.py dnsdist/dnsdist.chart.py \
+	dns_query_time/dns_query_time.chart.py \
+	dockerd/dockerd.chart.py dovecot/dovecot.chart.py \
+	elasticsearch/elasticsearch.chart.py example/example.chart.py \
+	exim/exim.chart.py fail2ban/fail2ban.chart.py \
+	freeradius/freeradius.chart.py go_expvar/go_expvar.chart.py \
+	haproxy/haproxy.chart.py hddtemp/hddtemp.chart.py \
+	httpcheck/httpcheck.chart.py icecast/icecast.chart.py \
+	ipfs/ipfs.chart.py isc_dhcpd/isc_dhcpd.chart.py \
+	linux_power_supply/linux_power_supply.chart.py \
+	litespeed/litespeed.chart.py logind/logind.chart.py \
+	mdstat/mdstat.chart.py megacli/megacli.chart.py \
+	memcached/memcached.chart.py mongodb/mongodb.chart.py \
+	monit/monit.chart.py mysql/mysql.chart.py nginx/nginx.chart.py \
+	nginx_plus/nginx_plus.chart.py nsd/nsd.chart.py \
+	ntpd/ntpd.chart.py ovpn_status_log/ovpn_status_log.chart.py \
+	phpfpm/phpfpm.chart.py portcheck/portcheck.chart.py \
+	postfix/postfix.chart.py postgres/postgres.chart.py \
+	powerdns/powerdns.chart.py proxysql/proxysql.chart.py \
+	puppet/puppet.chart.py rabbitmq/rabbitmq.chart.py \
+	redis/redis.chart.py rethinkdbs/rethinkdbs.chart.py \
+	retroshare/retroshare.chart.py samba/samba.chart.py \
+	sensors/sensors.chart.py smartd_log/smartd_log.chart.py \
+	spigotmc/spigotmc.chart.py springboot/springboot.chart.py \
+	squid/squid.chart.py tomcat/tomcat.chart.py \
+	traefik/traefik.chart.py unbound/unbound.chart.py \
+	uwsgi/uwsgi.chart.py varnish/varnish.chart.py \
+	w1sensor/w1sensor.chart.py web_log/web_log.chart.py
+userpythonconfigdir = $(configdir)/python.d
+dist_userpythonconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+pythonconfigdir = $(libconfigdir)/python.d
+dist_pythonconfig_DATA = $(top_srcdir)/installer/.keep $(NULL) \
+	adaptec_raid/adaptec_raid.conf apache/apache.conf \
+	beanstalk/beanstalk.conf bind_rndc/bind_rndc.conf \
+	boinc/boinc.conf ceph/ceph.conf chrony/chrony.conf \
+	couchdb/couchdb.conf cpufreq/cpufreq.conf cpuidle/cpuidle.conf \
+	dnsdist/dnsdist.conf dns_query_time/dns_query_time.conf \
+	dockerd/dockerd.conf dovecot/dovecot.conf \
+	elasticsearch/elasticsearch.conf example/example.conf \
+	exim/exim.conf fail2ban/fail2ban.conf \
+	freeradius/freeradius.conf go_expvar/go_expvar.conf \
+	haproxy/haproxy.conf hddtemp/hddtemp.conf \
+	httpcheck/httpcheck.conf icecast/icecast.conf ipfs/ipfs.conf \
+	isc_dhcpd/isc_dhcpd.conf \
+	linux_power_supply/linux_power_supply.conf \
+	litespeed/litespeed.conf logind/logind.conf mdstat/mdstat.conf \
+	megacli/megacli.conf memcached/memcached.conf \
+	mongodb/mongodb.conf monit/monit.conf mysql/mysql.conf \
+	nginx/nginx.conf nginx_plus/nginx_plus.conf nsd/nsd.conf \
+	ntpd/ntpd.conf ovpn_status_log/ovpn_status_log.conf \
+	phpfpm/phpfpm.conf portcheck/portcheck.conf \
+	postfix/postfix.conf postgres/postgres.conf \
+	powerdns/powerdns.conf proxysql/proxysql.conf \
+	puppet/puppet.conf rabbitmq/rabbitmq.conf redis/redis.conf \
+	rethinkdbs/rethinkdbs.conf retroshare/retroshare.conf \
+	samba/samba.conf sensors/sensors.conf \
+	smartd_log/smartd_log.conf spigotmc/spigotmc.conf \
+	springboot/springboot.conf squid/squid.conf tomcat/tomcat.conf \
+	traefik/traefik.conf unbound/unbound.conf uwsgi/uwsgi.conf \
+	varnish/varnish.conf w1sensor/w1sensor.conf \
+	web_log/web_log.conf
+pythonmodulesdir = $(pythondir)/python_modules
+dist_pythonmodules_DATA = \
+    python_modules/__init__.py \
+    $(NULL)
+
+basesdir = $(pythonmodulesdir)/bases
+dist_bases_DATA = \
+    python_modules/bases/__init__.py \
+    python_modules/bases/charts.py \
+    python_modules/bases/collection.py \
+    python_modules/bases/loaders.py \
+    python_modules/bases/loggers.py \
+    $(NULL)
+
+bases_framework_servicesdir = $(basesdir)/FrameworkServices
+dist_bases_framework_services_DATA = \
+    python_modules/bases/FrameworkServices/__init__.py \
+    python_modules/bases/FrameworkServices/ExecutableService.py \
+    python_modules/bases/FrameworkServices/LogService.py \
+    python_modules/bases/FrameworkServices/MySQLService.py \
+    python_modules/bases/FrameworkServices/SimpleService.py \
+    python_modules/bases/FrameworkServices/SocketService.py \
+    python_modules/bases/FrameworkServices/UrlService.py \
+    $(NULL)
+
+third_partydir = $(pythonmodulesdir)/third_party
+dist_third_party_DATA = \
+    python_modules/third_party/__init__.py \
+    python_modules/third_party/ordereddict.py \
+    python_modules/third_party/lm_sensors.py \
+    python_modules/third_party/mcrcon.py \
+    python_modules/third_party/boinc_client.py \
+    python_modules/third_party/monotonic.py \
+    $(NULL)
+
+pythonyaml2dir = $(pythonmodulesdir)/pyyaml2
+dist_pythonyaml2_DATA = \
+    python_modules/pyyaml2/__init__.py \
+    python_modules/pyyaml2/composer.py \
+    python_modules/pyyaml2/constructor.py \
+    python_modules/pyyaml2/cyaml.py \
+    python_modules/pyyaml2/dumper.py \
+    python_modules/pyyaml2/emitter.py \
+    python_modules/pyyaml2/error.py \
+    python_modules/pyyaml2/events.py \
+    python_modules/pyyaml2/loader.py \
+    python_modules/pyyaml2/nodes.py \
+    python_modules/pyyaml2/parser.py \
+    python_modules/pyyaml2/reader.py \
+    python_modules/pyyaml2/representer.py \
+    python_modules/pyyaml2/resolver.py \
+    python_modules/pyyaml2/scanner.py \
+    python_modules/pyyaml2/serializer.py \
+    python_modules/pyyaml2/tokens.py \
+    $(NULL)
+
+pythonyaml3dir = $(pythonmodulesdir)/pyyaml3
+dist_pythonyaml3_DATA = \
+    python_modules/pyyaml3/__init__.py \
+    python_modules/pyyaml3/composer.py \
+    python_modules/pyyaml3/constructor.py \
+    python_modules/pyyaml3/cyaml.py \
+    python_modules/pyyaml3/dumper.py \
+    python_modules/pyyaml3/emitter.py \
+    python_modules/pyyaml3/error.py \
+    python_modules/pyyaml3/events.py \
+    python_modules/pyyaml3/loader.py \
+    python_modules/pyyaml3/nodes.py \
+    python_modules/pyyaml3/parser.py \
+    python_modules/pyyaml3/reader.py \
+    python_modules/pyyaml3/representer.py \
+    python_modules/pyyaml3/resolver.py \
+    python_modules/pyyaml3/scanner.py \
+    python_modules/pyyaml3/serializer.py \
+    python_modules/pyyaml3/tokens.py \
+    $(NULL)
+
+python_urllib3dir = $(pythonmodulesdir)/urllib3
+dist_python_urllib3_DATA = \
+    python_modules/urllib3/__init__.py \
+    python_modules/urllib3/_collections.py \
+    python_modules/urllib3/connection.py \
+    python_modules/urllib3/connectionpool.py \
+    python_modules/urllib3/exceptions.py \
+    python_modules/urllib3/fields.py \
+    python_modules/urllib3/filepost.py \
+    python_modules/urllib3/response.py \
+    python_modules/urllib3/poolmanager.py \
+    python_modules/urllib3/request.py \
+    $(NULL)
+
+python_urllib3_utildir = $(python_urllib3dir)/util
+dist_python_urllib3_util_DATA = \
+    python_modules/urllib3/util/__init__.py \
+    python_modules/urllib3/util/connection.py \
+    python_modules/urllib3/util/request.py \
+    python_modules/urllib3/util/response.py \
+    python_modules/urllib3/util/retry.py \
+    python_modules/urllib3/util/selectors.py \
+    python_modules/urllib3/util/ssl_.py \
+    python_modules/urllib3/util/timeout.py \
+    python_modules/urllib3/util/url.py \
+    python_modules/urllib3/util/wait.py \
+    $(NULL)
+
+python_urllib3_packagesdir = $(python_urllib3dir)/packages
+dist_python_urllib3_packages_DATA = \
+    python_modules/urllib3/packages/__init__.py \
+    python_modules/urllib3/packages/ordered_dict.py \
+    python_modules/urllib3/packages/six.py \
+    $(NULL)
+
+python_urllib3_backportsdir = $(python_urllib3_packagesdir)/backports
+dist_python_urllib3_backports_DATA = \
+    python_modules/urllib3/packages/backports/__init__.py \
+    python_modules/urllib3/packages/backports/makefile.py \
+    $(NULL)
+
+python_urllib3_ssl_match_hostnamedir = $(python_urllib3_packagesdir)/ssl_match_hostname
+dist_python_urllib3_ssl_match_hostname_DATA = \
+    python_modules/urllib3/packages/ssl_match_hostname/__init__.py \
+    python_modules/urllib3/packages/ssl_match_hostname/_implementation.py \
+    $(NULL)
+
+python_urllib3_contribdir = $(python_urllib3dir)/contrib
+dist_python_urllib3_contrib_DATA = \
+    python_modules/urllib3/contrib/__init__.py \
+    python_modules/urllib3/contrib/appengine.py \
+    python_modules/urllib3/contrib/ntlmpool.py \
+    python_modules/urllib3/contrib/pyopenssl.py \
+    python_modules/urllib3/contrib/securetransport.py \
+    python_modules/urllib3/contrib/socks.py \
+    $(NULL)
+
+python_urllib3_securetransportdir = $(python_urllib3_contribdir)/_securetransport
+dist_python_urllib3_securetransport_DATA = \
+    python_modules/urllib3/contrib/_securetransport/__init__.py \
+    python_modules/urllib3/contrib/_securetransport/bindings.py \
+    python_modules/urllib3/contrib/_securetransport/low_level.py \
+    $(NULL)
+
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .in
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/build/subst.inc $(srcdir)/adaptec_raid/Makefile.inc $(srcdir)/apache/Makefile.inc $(srcdir)/beanstalk/Makefile.inc $(srcdir)/bind_rndc/Makefile.inc $(srcdir)/boinc/Makefile.inc $(srcdir)/ceph/Makefile.inc $(srcdir)/chrony/Makefile.inc $(srcdir)/couchdb/Makefile.inc $(srcdir)/cpufreq/Makefile.inc $(srcdir)/cpuidle/Makefile.inc $(srcdir)/dnsdist/Makefile.inc $(srcdir)/dns_query_time/Makefile.inc $(srcdir)/dockerd/Makefile.inc $(srcdir)/dovecot/Makefile.inc $(srcdir)/elasticsearch/Makefile.inc $(srcdir)/example/Makefile.inc $(srcdir)/exim/Makefile.inc $(srcdir)/fail2ban/Makefile.inc $(srcdir)/freeradius/Makefile.inc $(srcdir)/go_expvar/Makefile.inc $(srcdir)/haproxy/Makefile.inc $(srcdir)/hddtemp/Makefile.inc $(srcdir)/httpcheck/Makefile.inc $(srcdir)/icecast/Makefile.inc $(srcdir)/ipfs/Makefile.inc $(srcdir)/isc_dhcpd/Makefile.inc $(srcdir)/linux_power_supply/Makefile.inc $(srcdir)/litespeed/Makefile.inc $(srcdir)/logind/Makefile.inc $(srcdir)/mdstat/Makefile.inc $(srcdir)/megacli/Makefile.inc $(srcdir)/memcached/Makefile.inc $(srcdir)/mongodb/Makefile.inc $(srcdir)/monit/Makefile.inc $(srcdir)/mysql/Makefile.inc $(srcdir)/nginx/Makefile.inc $(srcdir)/nginx_plus/Makefile.inc $(srcdir)/nsd/Makefile.inc $(srcdir)/ntpd/Makefile.inc $(srcdir)/ovpn_status_log/Makefile.inc $(srcdir)/phpfpm/Makefile.inc $(srcdir)/portcheck/Makefile.inc $(srcdir)/postfix/Makefile.inc $(srcdir)/postgres/Makefile.inc $(srcdir)/powerdns/Makefile.inc $(srcdir)/proxysql/Makefile.inc $(srcdir)/puppet/Makefile.inc $(srcdir)/rabbitmq/Makefile.inc $(srcdir)/redis/Makefile.inc $(srcdir)/rethinkdbs/Makefile.inc $(srcdir)/retroshare/Makefile.inc $(srcdir)/samba/Makefile.inc $(srcdir)/sensors/Makefile.inc $(srcdir)/smartd_log/Makefile.inc $(srcdir)/spigotmc/Makefile.inc $(srcdir)/springboot/Makefile.inc $(srcdir)/squid/Makefile.inc $(srcdir)/tomcat/Makefile.inc $(srcdir)/traefik/Makefile.inc $(srcdir)/unbound/Makefile.inc $(srcdir)/uwsgi/Makefile.inc $(srcdir)/varnish/Makefile.inc $(srcdir)/w1sensor/Makefile.inc $(srcdir)/web_log/Makefile.inc $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/python.d.plugin/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu collectors/python.d.plugin/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+$(top_srcdir)/build/subst.inc $(srcdir)/adaptec_raid/Makefile.inc $(srcdir)/apache/Makefile.inc $(srcdir)/beanstalk/Makefile.inc $(srcdir)/bind_rndc/Makefile.inc $(srcdir)/boinc/Makefile.inc $(srcdir)/ceph/Makefile.inc $(srcdir)/chrony/Makefile.inc $(srcdir)/couchdb/Makefile.inc $(srcdir)/cpufreq/Makefile.inc $(srcdir)/cpuidle/Makefile.inc $(srcdir)/dnsdist/Makefile.inc $(srcdir)/dns_query_time/Makefile.inc $(srcdir)/dockerd/Makefile.inc $(srcdir)/dovecot/Makefile.inc $(srcdir)/elasticsearch/Makefile.inc $(srcdir)/example/Makefile.inc $(srcdir)/exim/Makefile.inc $(srcdir)/fail2ban/Makefile.inc $(srcdir)/freeradius/Makefile.inc $(srcdir)/go_expvar/Makefile.inc $(srcdir)/haproxy/Makefile.inc $(srcdir)/hddtemp/Makefile.inc $(srcdir)/httpcheck/Makefile.inc $(srcdir)/icecast/Makefile.inc $(srcdir)/ipfs/Makefile.inc $(srcdir)/isc_dhcpd/Makefile.inc $(srcdir)/linux_power_supply/Makefile.inc $(srcdir)/litespeed/Makefile.inc $(srcdir)/logind/Makefile.inc $(srcdir)/mdstat/Makefile.inc $(srcdir)/megacli/Makefile.inc $(srcdir)/memcached/Makefile.inc $(srcdir)/mongodb/Makefile.inc $(srcdir)/monit/Makefile.inc $(srcdir)/mysql/Makefile.inc $(srcdir)/nginx/Makefile.inc $(srcdir)/nginx_plus/Makefile.inc $(srcdir)/nsd/Makefile.inc $(srcdir)/ntpd/Makefile.inc $(srcdir)/ovpn_status_log/Makefile.inc $(srcdir)/phpfpm/Makefile.inc $(srcdir)/portcheck/Makefile.inc $(srcdir)/postfix/Makefile.inc $(srcdir)/postgres/Makefile.inc $(srcdir)/powerdns/Makefile.inc $(srcdir)/proxysql/Makefile.inc $(srcdir)/puppet/Makefile.inc $(srcdir)/rabbitmq/Makefile.inc $(srcdir)/redis/Makefile.inc $(srcdir)/rethinkdbs/Makefile.inc $(srcdir)/retroshare/Makefile.inc $(srcdir)/samba/Makefile.inc $(srcdir)/sensors/Makefile.inc $(srcdir)/smartd_log/Makefile.inc $(srcdir)/spigotmc/Makefile.inc $(srcdir)/springboot/Makefile.inc $(srcdir)/squid/Makefile.inc $(srcdir)/tomcat/Makefile.inc $(srcdir)/traefik/Makefile.inc $(srcdir)/unbound/Makefile.inc $(srcdir)/uwsgi/Makefile.inc $(srcdir)/varnish/Makefile.inc $(srcdir)/w1sensor/Makefile.inc $(srcdir)/web_log/Makefile.inc:
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+install-dist_pluginsSCRIPTS: $(dist_plugins_SCRIPTS)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pluginsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pluginsdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) { files[d] = files[d] " " $$1; \
+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(pluginsdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(pluginsdir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-dist_pluginsSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || exit 0; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	       sed -e 's,.*/,,;$(transform)'`; \
+	dir='$(DESTDIR)$(pluginsdir)'; $(am__uninstall_files_from_dir)
+install-dist_pythonSCRIPTS: $(dist_python_SCRIPTS)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_python_SCRIPTS)'; test -n "$(pythondir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pythondir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pythondir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) { files[d] = files[d] " " $$1; \
+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(pythondir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(pythondir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-dist_pythonSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_python_SCRIPTS)'; test -n "$(pythondir)" || exit 0; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	       sed -e 's,.*/,,;$(transform)'`; \
+	dir='$(DESTDIR)$(pythondir)'; $(am__uninstall_files_from_dir)
+install-dist_basesDATA: $(dist_bases_DATA)
+	@$(NORMAL_INSTALL)
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+all-am: Makefile $(SCRIPTS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(pythondir)" "$(DESTDIR)$(basesdir)" "$(DESTDIR)$(bases_framework_servicesdir)" "$(DESTDIR)$(libconfigdir)" "$(DESTDIR)$(pythondir)" "$(DESTDIR)$(python_urllib3dir)" "$(DESTDIR)$(python_urllib3_backportsdir)" "$(DESTDIR)$(python_urllib3_contribdir)" "$(DESTDIR)$(python_urllib3_packagesdir)" "$(DESTDIR)$(python_urllib3_securetransportdir)" "$(DESTDIR)$(python_urllib3_ssl_match_hostnamedir)" "$(DESTDIR)$(python_urllib3_utildir)" "$(DESTDIR)$(pythonconfigdir)" "$(DESTDIR)$(pythonmodulesdir)" "$(DESTDIR)$(pythonyaml2dir)" "$(DESTDIR)$(pythonyaml3dir)" "$(DESTDIR)$(third_partydir)" "$(DESTDIR)$(userpythonconfigdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-dist_basesDATA \
+	install-dist_bases_framework_servicesDATA \
+	install-dist_libconfigDATA install-dist_pluginsSCRIPTS \
+	install-dist_pythonDATA install-dist_pythonSCRIPTS \
+	install-dist_python_urllib3DATA \
+	install-dist_python_urllib3_backportsDATA \
+	install-dist_python_urllib3_contribDATA \
+	install-dist_python_urllib3_packagesDATA \
+	install-dist_python_urllib3_securetransportDATA \
+	install-dist_python_urllib3_ssl_match_hostnameDATA \
+	install-dist_python_urllib3_utilDATA \
+	install-dist_pythonconfigDATA install-dist_pythonmodulesDATA \
+	install-dist_pythonyaml2DATA install-dist_pythonyaml3DATA \
+	install-dist_third_partyDATA install-dist_userpythonconfigDATA
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-dist_basesDATA \
+	uninstall-dist_bases_framework_servicesDATA \
+	uninstall-dist_libconfigDATA uninstall-dist_pluginsSCRIPTS \
+	uninstall-dist_pythonDATA uninstall-dist_pythonSCRIPTS \
+	uninstall-dist_python_urllib3DATA \
+	uninstall-dist_python_urllib3_backportsDATA \
+	uninstall-dist_python_urllib3_contribDATA \
+	uninstall-dist_python_urllib3_packagesDATA \
+	uninstall-dist_python_urllib3_securetransportDATA \
+	uninstall-dist_python_urllib3_ssl_match_hostnameDATA \
+	uninstall-dist_python_urllib3_utilDATA \
+	uninstall-dist_pythonconfigDATA \
+	uninstall-dist_pythonmodulesDATA \
+	uninstall-dist_pythonyaml2DATA uninstall-dist_pythonyaml3DATA \
+	uninstall-dist_third_partyDATA \
+	uninstall-dist_userpythonconfigDATA
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dist_basesDATA \
+	install-dist_bases_framework_servicesDATA \
+	install-dist_libconfigDATA install-dist_pluginsSCRIPTS \
+	install-dist_pythonDATA install-dist_pythonSCRIPTS \
+	install-dist_python_urllib3DATA \
+	install-dist_python_urllib3_backportsDATA \
+	install-dist_python_urllib3_contribDATA \
+	install-dist_python_urllib3_packagesDATA \
+	install-dist_python_urllib3_securetransportDATA \
+	install-dist_python_urllib3_ssl_match_hostnameDATA \
+	install-dist_python_urllib3_utilDATA \
+	install-dist_pythonconfigDATA install-dist_pythonmodulesDATA \
+	install-dist_pythonyaml2DATA install-dist_pythonyaml3DATA \
+	install-dist_third_partyDATA install-dist_userpythonconfigDATA \
+	install-dvi install-dvi-am install-exec install-exec-am \
+	install-html install-html-am install-info install-info-am \
+	install-man install-pdf install-pdf-am install-ps \
+	install-ps-am install-strip installcheck installcheck-am \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-generic pdf pdf-am ps ps-am tags-am \
+	uninstall uninstall-am uninstall-dist_basesDATA \
+	uninstall-dist_bases_framework_servicesDATA \
+	uninstall-dist_libconfigDATA uninstall-dist_pluginsSCRIPTS \
+	uninstall-dist_pythonDATA uninstall-dist_pythonSCRIPTS \
+	uninstall-dist_python_urllib3DATA \
+	uninstall-dist_python_urllib3_backportsDATA \
+	uninstall-dist_python_urllib3_contribDATA \
+	uninstall-dist_python_urllib3_packagesDATA \
+	uninstall-dist_python_urllib3_securetransportDATA \
+	uninstall-dist_python_urllib3_ssl_match_hostnameDATA \
+	uninstall-dist_python_urllib3_utilDATA \
+	uninstall-dist_pythonconfigDATA \
+	uninstall-dist_pythonmodulesDATA \
+	uninstall-dist_pythonyaml2DATA uninstall-dist_pythonyaml3DATA \
+	uninstall-dist_third_partyDATA \
+	uninstall-dist_userpythonconfigDATA
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
+		-e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
+		-e 's#[@]pythondir_POST@#$(pythondir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
+		$< > $@.tmp; then \
+		mv "$@.tmp" "$@"; \
+	else \
+		rm -f "$@.tmp"; \
+		false; \
+	fi
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/python.d.plugin/README.md b/collectors/python.d.plugin/README.md
new file mode 100644
index 000000000..df24cd18f
--- /dev/null
+++ b/collectors/python.d.plugin/README.md
@@ -0,0 +1,198 @@
+# python.d.plugin
+
+`python.d.plugin` is a netdata external plugin. It is an **orchestrator** for data collection modules written in `python`.
+
+1. It runs as an independent process `ps fax` shows it
+2. It is started and stopped automatically by netdata
+3. It communicates with netdata via a unidirectional pipe (sending data to the netdata daemon)
+4. Supports any number of data collection **modules**
+5. Allows each **module** to have one or more data collection **jobs**
+6. Each **job** is collecting one or more metrics from a single data source
+
+
+## Disclaimer
+
+Every module should be compatible with python2 and python3.
+All third party libraries should be installed system-wide or in `python_modules` directory.
+Module configurations are written in YAML and **pyYAML is required**.
+
+Every configuration file must have one of two formats:
+
+- Configuration for only one job:
+
+```yaml
+update_every : 2 # update frequency
+retries      : 1 # how many failures in update() is tolerated
+priority     : 20000 # where it is shown on dashboard
+
+other_var1   : bla  # variables passed to module
+other_var2   : alb
+```
+
+- Configuration for many jobs (ex. mysql):
+
+```yaml
+# module defaults:
+update_every : 2
+retries      : 1
+priority     : 20000
+
+local:  # job name
+  update_every : 5 # job update frequency
+  other_var1   : some_val # module specific variable
+
+other_job:
+  priority     : 5 # job position on dashboard
+  retries      : 20 # job retries
+  other_var2   : val # module specific variable
+```
+
+`update_every`, `retries`, and `priority` are always optional.
+
+---
+
+## How to write a new module
+
+Writing new python module is simple. You just need to remember to include 5 major things:
+- **ORDER** global list
+- **CHART** global dictionary
+- **Service** class
+- **_get_data** method
+- all code needs to be compatible with Python 2 (**≥ 2.7**) *and* 3 (**≥ 3.1**)
+
+If you plan to submit the module in a PR, make sure and go through the [PR checklist for new modules](https://github.com/netdata/netdata/wiki/New-Module-PR-Checklist) beforehand to make sure you have updated all the files you need to.
+
+### Global variables `ORDER` and `CHART`
+
+`ORDER` list should contain the order of chart ids. Example:
+```py
+ORDER = ['first_chart', 'second_chart', 'third_chart']
+```
+
+`CHART` dictionary is a little bit trickier. It should contain the chart definition in following format:
+```py
+CHART = {
+    id: {
+        'options': [name, title, units, family, context, charttype],
+        'lines': [
+            [unique_dimension_name, name, algorithm, multiplier, divisor]
+        ]}
+```
+
+All names are better explained in the [External Plugins](../) section.
+Parameters like `priority` and `update_every` are handled by `python.d.plugin`.
+
+### `Service` class
+
+Every module needs to implement its own `Service` class. This class should inherit from one of the framework classes:
+
+- `SimpleService`
+- `UrlService`
+- `SocketService`
+- `LogService`
+- `ExecutableService`
+
+Also it needs to invoke the parent class constructor in a specific way as well as assign global variables to class variables. 
+
+Simple example:
+```py
+from base import UrlService
+class Service(UrlService):
+    def __init__(self, configuration=None, name=None):
+        UrlService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+```
+
+### `_get_data` collector/parser
+
+This method should grab raw data from `_get_raw_data`, parse it, and return a dictionary where keys are unique dimension names or `None` if no data is collected.
+
+Example:
+```py
+def _get_data(self):
+    try:
+        raw = self._get_raw_data().split(" ")
+        return {'active': int(raw[2])}
+    except (ValueError, AttributeError):
+        return None
+```
+
+More about framework classes
+============================
+
+Every framework class has some user-configurable variables which are specific to this particular class. Those variables should have default values initialized in the child class constructor.
+
+If module needs some additional user-configurable variable, it can be accessed from the `self.configuration` list and assigned in constructor or custom `check` method. Example:
+```py
+def __init__(self, configuration=None, name=None):
+    UrlService.__init__(self, configuration=configuration, name=name)
+    try:
+        self.baseurl = str(self.configuration['baseurl'])
+    except (KeyError, TypeError):
+        self.baseurl = "http://localhost:5001"
+```
+
+Classes implement `_get_raw_data` which should be used to grab raw data. This method usually returns a list of strings.
+
+### `SimpleService`
+
+_This is last resort class, if a new module cannot be written by using other framework class this one can be used._
+
+_Example: `mysql`, `sensors`_
+
+It is the lowest-level class which implements most of module logic, like:
+- threading
+- handling run times
+- chart formatting
+- logging
+- chart creation and updating
+
+### `LogService`
+
+_Examples: `apache_cache`, `nginx_log`_
+
+_Variable from config file_: `log_path`.
+
+Object created from this class reads new lines from file specified in `log_path` variable. It will check if file exists and is readable. Also `_get_raw_data` returns list of strings where each string is one line from file specified in `log_path`.
+
+### `ExecutableService`
+
+_Examples: `exim`, `postfix`_
+
+_Variable from config file_: `command`.
+
+This allows to execute a shell command in a secure way. It will check for invalid characters in `command` variable and won't proceed if there is one of:
+- '&'
+- '|'
+- ';'
+- '>'
+- '<'
+
+For additional security it uses python `subprocess.Popen` (without `shell=True` option) to execute command. Command can be specified with absolute or relative name. When using relative name, it will try to find `command` in `PATH` environment variable as well as in `/sbin` and `/usr/sbin`.
+
+`_get_raw_data` returns list of decoded lines returned by `command`.
+
+### UrlService
+
+_Examples: `apache`, `nginx`, `tomcat`_
+
+_Variables from config file_: `url`, `user`, `pass`.
+
+If data is grabbed by accessing service via HTTP protocol, this class can be used. It can handle HTTP Basic Auth when specified with `user` and `pass` credentials.
+
+`_get_raw_data` returns list of utf-8 decoded strings (lines).
+
+### SocketService
+
+_Examples: `dovecot`, `redis`_
+
+_Variables from config file_: `unix_socket`, `host`, `port`, `request`.
+
+Object will try execute `request` using either `unix_socket` or TCP/IP socket with combination of `host` and `port`. This can access unix sockets with SOCK_STREAM or SOCK_DGRAM protocols and TCP/IP sockets in version 4 and 6 with SOCK_STREAM setting.
+
+Sockets are accessed in non-blocking mode with 15 second timeout.
+
+After every execution of `_get_raw_data` socket is closed, to prevent this module needs to set `_keep_alive` variable to `True` and implement custom `_check_raw_data` method.
+
+`_check_raw_data` should take raw data and return `True` if all data is received otherwise it should return `False`. Also it should do it in fast and efficient way.
\ No newline at end of file
diff --git a/collectors/python.d.plugin/adaptec_raid/Makefile.inc b/collectors/python.d.plugin/adaptec_raid/Makefile.inc
new file mode 100644
index 000000000..716cdb235
--- /dev/null
+++ b/collectors/python.d.plugin/adaptec_raid/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += adaptec_raid/adaptec_raid.chart.py
+dist_pythonconfig_DATA += adaptec_raid/adaptec_raid.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += adaptec_raid/README.md adaptec_raid/Makefile.inc
+
diff --git a/collectors/python.d.plugin/adaptec_raid/README.md b/collectors/python.d.plugin/adaptec_raid/README.md
new file mode 100644
index 000000000..499dc9190
--- /dev/null
+++ b/collectors/python.d.plugin/adaptec_raid/README.md
@@ -0,0 +1,46 @@
+# adaptec raid
+
+Module collects logical and physical devices health metrics.
+
+**Requirements:**
+* `arcconf` program
+* `sudo` program
+* `netdata` user needs to be able to sudo the `arcconf` program without password
+
+To grab stats it executes:
+ * `sudo -n arcconf GETCONFIG 1 LD`
+ * `sudo -n arcconf GETCONFIG 1 PD`
+
+
+It produces:
+
+1. **Logical Device Status**
+
+2. **Physical Device State**
+
+3. **Physical Device S.M.A.R.T warnings**
+
+4. **Physical Device Temperature**
+
+### prerequisite
+This module uses `arcconf` which can only be executed by root.  It uses
+`sudo` and assumes that it is configured such that the `netdata` user can
+execute `arcconf` as root without password.
+
+Add to `sudoers`:
+
+    netdata ALL=(root)       NOPASSWD: /path/to/arcconf
+
+### configuration
+
+ **adaptec_raid** is disabled by default. Should be explicitly enabled in `python.d.conf`.
+
+```yaml
+adaptec_raid: yes
+```
+
+#### Screenshot:
+
+![image](https://user-images.githubusercontent.com/22274335/47278133-6d306680-d601-11e8-87c2-cc9c0f42d686.png)
+
+---
diff --git a/collectors/python.d.plugin/adaptec_raid/adaptec_raid.chart.py b/collectors/python.d.plugin/adaptec_raid/adaptec_raid.chart.py
new file mode 100644
index 000000000..1fb1e4336
--- /dev/null
+++ b/collectors/python.d.plugin/adaptec_raid/adaptec_raid.chart.py
@@ -0,0 +1,247 @@
+# -*- coding: utf-8 -*-
+# Description: adaptec_raid netdata python.d module
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+
+import re
+
+from copy import deepcopy
+
+from bases.FrameworkServices.ExecutableService import ExecutableService
+from bases.collection import find_binary
+
+
+disabled_by_default = True
+
+update_every = 5
+
+ORDER = [
+    'ld_status',
+    'pd_state',
+    'pd_smart_warnings',
+    'pd_temperature',
+]
+
+CHARTS = {
+    'ld_status': {
+        'options': [None, 'Status Is Not OK', 'bool', 'logical devices', 'adapter_raid.ld_status', 'line'],
+        'lines': []
+    },
+    'pd_state': {
+        'options': [None, 'State Is Not OK', 'bool', 'physical devices', 'adapter_raid.pd_state', 'line'],
+        'lines': []
+    },
+    'pd_smart_warnings': {
+        'options': [None, 'S.M.A.R.T warnings', 'count', 'physical devices',
+                    'adapter_raid.smart_warnings', 'line'],
+        'lines': []
+    },
+    'pd_temperature': {
+        'options': [None, 'Temperature', 'celsius', 'physical devices', 'adapter_raid.temperature', 'line'],
+        'lines': []
+    },
+}
+
+SUDO = 'sudo'
+ARCCONF = 'arcconf'
+
+BAD_LD_STATUS = (
+    'Degraded',
+    'Failed',
+)
+
+GOOD_PD_STATUS = (
+    'Online',
+)
+
+RE_LD = re.compile(
+    r'Logical device number\s+([0-9]+).*?'
+    r'Status of logical device\s+: ([a-zA-Z]+)'
+)
+
+
+def find_lds(d):
+    d = ' '.join(v.strip() for v in d)
+    return [LD(*v) for v in RE_LD.findall(d)]
+
+
+def find_pds(d):
+    pds = list()
+    pd = PD()
+
+    for row in d:
+        row = row.strip()
+        if row.startswith('Device #'):
+            pd = PD()
+            pd.id = row.split('#')[-1]
+        elif not pd.id:
+            continue
+
+        if row.startswith('State'):
+            v = row.split()[-1]
+            pd.state = v
+        elif row.startswith('S.M.A.R.T. warnings'):
+            v = row.split()[-1]
+            pd.smart_warnings = v
+        elif row.startswith('Temperature'):
+            v = row.split(':')[-1].split()[0]
+            pd.temperature = v
+        elif row.startswith('NCQ status'):
+            if pd.id and pd.state and pd.smart_warnings:
+                pds.append(pd)
+            pd = PD()
+
+    return pds
+
+
+class LD:
+    def __init__(self, ld_id, status):
+        self.id = ld_id
+        self.status = status
+
+    def data(self):
+        return {
+            'ld_{0}_status'.format(self.id): int(self.status in BAD_LD_STATUS)
+        }
+
+
+class PD:
+    def __init__(self):
+        self.id = None
+        self.state = None
+        self.smart_warnings = None
+        self.temperature = None
+
+    def data(self):
+        data = {
+            'pd_{0}_state'.format(self.id): int(self.state not in GOOD_PD_STATUS),
+            'pd_{0}_smart_warnings'.format(self.id): self.smart_warnings,
+        }
+        if self.temperature and self.temperature.isdigit():
+            data['pd_{0}_temperature'.format(self.id)] = self.temperature
+
+        return data
+
+
+class Arcconf:
+    def __init__(self, arcconf):
+        self.arcconf = arcconf
+
+    def ld_info(self):
+        return [self.arcconf, 'GETCONFIG', '1', 'LD']
+
+    def pd_info(self):
+        return [self.arcconf, 'GETCONFIG', '1', 'PD']
+
+
+# TODO: hardcoded sudo...
+class SudoArcconf:
+    def __init__(self, arcconf, sudo):
+        self.arcconf = Arcconf(arcconf)
+        self.sudo = sudo
+
+    def ld_info(self):
+        return [self.sudo, '-n'] + self.arcconf.ld_info()
+
+    def pd_info(self):
+        return [self.sudo, '-n'] + self.arcconf.pd_info()
+
+
+class Service(ExecutableService):
+    def __init__(self, configuration=None, name=None):
+        ExecutableService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = deepcopy(CHARTS)
+        self.use_sudo = self.configuration.get('use_sudo', True)
+        self.arcconf = None
+
+    def execute(self, command, stderr=False):
+        return self._get_raw_data(command=command, stderr=stderr)
+
+    def check(self):
+        arcconf = find_binary(ARCCONF)
+        if not arcconf:
+            self.error('can\'t locate "{0}" binary'.format(ARCCONF))
+            return False
+
+        sudo = find_binary(SUDO)
+        if self.use_sudo:
+            if not sudo:
+                self.error('can\'t locate "{0}" binary'.format(SUDO))
+                return False
+            err = self.execute([sudo, '-n', '-v'], True)
+            if err:
+                self.error(' '.join(err))
+                return False
+
+        if self.use_sudo:
+            self.arcconf = SudoArcconf(arcconf, sudo)
+        else:
+            self.arcconf = Arcconf(arcconf)
+
+        lds = self.get_lds()
+        if not lds:
+            return False
+
+        self.debug('discovered logical devices ids: {0}'.format([ld.id for ld in lds]))
+
+        pds = self.get_pds()
+        if not pds:
+            return False
+
+        self.debug('discovered physical devices ids: {0}'.format([pd.id for pd in pds]))
+
+        self.update_charts(lds, pds)
+        return True
+
+    def get_data(self):
+        data = dict()
+
+        for ld in self.get_lds():
+            data.update(ld.data())
+
+        for pd in self.get_pds():
+            data.update(pd.data())
+
+        return data
+
+    def get_lds(self):
+        raw_lds = self.execute(self.arcconf.ld_info())
+        if not raw_lds:
+            return None
+
+        lds = find_lds(raw_lds)
+        if not lds:
+            self.error('failed to parse "{0}" output'.format(' '.join(self.arcconf.ld_info())))
+            self.debug('output: {0}'.format(raw_lds))
+            return None
+        return lds
+
+    def get_pds(self):
+        raw_pds = self.execute(self.arcconf.pd_info())
+        if not raw_pds:
+            return None
+
+        pds = find_pds(raw_pds)
+        if not pds:
+            self.error('failed to parse "{0}" output'.format(' '.join(self.arcconf.pd_info())))
+            self.debug('output: {0}'.format(raw_pds))
+            return None
+        return pds
+
+    def update_charts(self, lds, pds):
+        charts = self.definitions
+        for ld in lds:
+            dim = ['ld_{0}_status'.format(ld.id), 'ld {0}'.format(ld.id)]
+            charts['ld_status']['lines'].append(dim)
+
+        for pd in pds:
+            dim = ['pd_{0}_state'.format(pd.id), 'pd {0}'.format(pd.id)]
+            charts['pd_state']['lines'].append(dim)
+
+            dim = ['pd_{0}_smart_warnings'.format(pd.id), 'pd {0}'.format(pd.id)]
+            charts['pd_smart_warnings']['lines'].append(dim)
+
+            dim = ['pd_{0}_temperature'.format(pd.id), 'pd {0}'.format(pd.id)]
+            charts['pd_temperature']['lines'].append(dim)
diff --git a/collectors/python.d.plugin/adaptec_raid/adaptec_raid.conf b/collectors/python.d.plugin/adaptec_raid/adaptec_raid.conf
new file mode 100644
index 000000000..253cbf5a9
--- /dev/null
+++ b/collectors/python.d.plugin/adaptec_raid/adaptec_raid.conf
@@ -0,0 +1,55 @@
+# netdata python.d.plugin configuration for adaptec raid
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+# ----------------------------------------------------------------------
diff --git a/collectors/python.d.plugin/apache/Makefile.inc b/collectors/python.d.plugin/apache/Makefile.inc
new file mode 100644
index 000000000..70a421550
--- /dev/null
+++ b/collectors/python.d.plugin/apache/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += apache/apache.chart.py
+dist_pythonconfig_DATA += apache/apache.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += apache/README.md apache/Makefile.inc
+
diff --git a/collectors/python.d.plugin/apache/README.md b/collectors/python.d.plugin/apache/README.md
new file mode 100644
index 000000000..c6d1d126a
--- /dev/null
+++ b/collectors/python.d.plugin/apache/README.md
@@ -0,0 +1,59 @@
+# apache
+
+This module will monitor one or more Apache servers depending on configuration.
+
+**Requirements:**
+ * apache with enabled `mod_status`
+
+It produces the following charts:
+
+1. **Requests** in requests/s
+ * requests
+
+2. **Connections**
+ * connections
+
+3. **Async Connections**
+ * keepalive
+ * closing
+ * writing
+
+4. **Bandwidth** in kilobytes/s
+ * sent
+
+5. **Workers**
+ * idle
+ * busy
+
+6. **Lifetime Avg. Requests/s** in requests/s
+ * requests_sec
+
+7. **Lifetime Avg. Bandwidth/s** in kilobytes/s
+ * size_sec
+
+8. **Lifetime Avg. Response Size** in bytes/request
+ * size_req
+
+### configuration
+
+Needs only `url` to server's `server-status?auto`
+
+Here is an example for 2 servers:
+
+```yaml
+update_every : 10
+priority     : 90100
+
+local:
+  url      : 'http://localhost/server-status?auto'
+  retries  : 20
+
+remote:
+  url          : 'http://www.apache.org/server-status?auto'
+  update_every : 5
+  retries      : 4
+```
+
+Without configuration, module attempts to connect to `http://localhost/server-status?auto`
+
+---
diff --git a/python.d/apache.chart.py b/collectors/python.d.plugin/apache/apache.chart.py
index 789b3c099..d136274d0 100644
--- a/python.d/apache.chart.py
+++ b/collectors/python.d.plugin/apache/apache.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: apache netdata python.d module
 # Author: Pawel Krupa (paulfantom)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.FrameworkServices.UrlService import UrlService
 
@@ -25,63 +26,65 @@ CHARTS = {
         'options': [None, 'apache Lifetime Avg. Response Size', 'bytes/request',
                     'statistics', 'apache.bytesperreq', 'area'],
         'lines': [
-            ["size_req"]
+            ['size_req']
         ]},
     'workers': {
         'options': [None, 'apache Workers', 'workers', 'workers', 'apache.workers', 'stacked'],
         'lines': [
-            ["idle"],
-            ["busy"],
+            ['idle'],
+            ['busy'],
         ]},
     'reqpersec': {
         'options': [None, 'apache Lifetime Avg. Requests/s', 'requests/s', 'statistics',
                     'apache.reqpersec', 'area'],
         'lines': [
-            ["requests_sec"]
+            ['requests_sec']
         ]},
     'bytespersec': {
         'options': [None, 'apache Lifetime Avg. Bandwidth/s', 'kilobits/s', 'statistics',
                     'apache.bytesperreq', 'area'],
         'lines': [
-            ["size_sec", None, 'absolute', 8, 1000]
+            ['size_sec', None, 'absolute', 8, 1000]
         ]},
     'requests': {
         'options': [None, 'apache Requests', 'requests/s', 'requests', 'apache.requests', 'line'],
         'lines': [
-            ["requests", None, 'incremental']
+            ['requests', None, 'incremental']
         ]},
     'net': {
         'options': [None, 'apache Bandwidth', 'kilobits/s', 'bandwidth', 'apache.net', 'area'],
         'lines': [
-            ["sent", None, 'incremental', 8, 1]
+            ['sent', None, 'incremental', 8, 1]
         ]},
     'connections': {
         'options': [None, 'apache Connections', 'connections', 'connections', 'apache.connections', 'line'],
         'lines': [
-            ["connections"]
+            ['connections']
         ]},
     'conns_async': {
         'options': [None, 'apache Async Connections', 'connections', 'connections', 'apache.conns_async', 'stacked'],
         'lines': [
-            ["keepalive"],
-            ["closing"],
-            ["writing"]
+            ['keepalive'],
+            ['closing'],
+            ['writing']
         ]}
 }
 
-ASSIGNMENT = {"BytesPerReq": 'size_req',
-              "IdleWorkers": 'idle',
-              "IdleServers": 'idle_servers',
-              "BusyWorkers": 'busy',
-              "BusyServers": 'busy_servers',
-              "ReqPerSec": 'requests_sec',
-              "BytesPerSec": 'size_sec',
-              "Total Accesses": 'requests',
-              "Total kBytes": 'sent',
-              "ConnsTotal": 'connections',
-              "ConnsAsyncKeepAlive": 'keepalive',
-              "ConnsAsyncClosing": 'closing',
-              "ConnsAsyncWriting": 'writing'}
+ASSIGNMENT = {
+    'BytesPerReq': 'size_req',
+    'IdleWorkers': 'idle',
+    'IdleServers': 'idle_servers',
+    'BusyWorkers': 'busy',
+    'BusyServers': 'busy_servers',
+    'ReqPerSec': 'requests_sec',
+    'BytesPerSec': 'size_sec',
+    'Total Accesses': 'requests',
+    'Total kBytes': 'sent',
+    'ConnsTotal': 'connections',
+    'ConnsAsyncKeepAlive': 'keepalive',
+    'ConnsAsyncClosing': 'closing',
+    'ConnsAsyncWriting': 'writing'
+}
 
 
 class Service(UrlService):
@@ -102,8 +105,8 @@ class Service(UrlService):
             for chart in self.definitions:
                 if chart == 'workers':
                     lines = self.definitions[chart]['lines']
-                    lines[0] = ["idle_servers", 'idle']
-                    lines[1] = ["busy_servers", 'busy']
+                    lines[0] = ['idle_servers', 'idle']
+                    lines[1] = ['busy_servers', 'busy']
                 opts = self.definitions[chart]['options']
                 opts[1] = opts[1].replace('apache', 'lighttpd')
                 opts[4] = opts[4].replace('apache', 'lighttpd')
@@ -120,7 +123,7 @@ class Service(UrlService):
         data = dict()
 
         for row in raw_data.split('\n'):
-            tmp = row.split(":")
+            tmp = row.split(':')
             if tmp[0] in ASSIGNMENT:
                 try:
                     data[ASSIGNMENT[tmp[0]]] = int(float(tmp[1]))
diff --git a/conf.d/python.d/apache.conf b/collectors/python.d.plugin/apache/apache.conf
index 3bbc3f786..8b606f7e0 100644
--- a/conf.d/python.d/apache.conf
+++ b/collectors/python.d.plugin/apache/apache.conf
@@ -84,4 +84,4 @@ localipv4:
 
 localipv6:
   name : 'local'
-  url  : 'http://::1/server-status?auto'
+  url  : 'http://[::1]/server-status?auto'
diff --git a/collectors/python.d.plugin/beanstalk/Makefile.inc b/collectors/python.d.plugin/beanstalk/Makefile.inc
new file mode 100644
index 000000000..4bbb7087d
--- /dev/null
+++ b/collectors/python.d.plugin/beanstalk/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += beanstalk/beanstalk.chart.py
+dist_pythonconfig_DATA += beanstalk/beanstalk.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += beanstalk/README.md beanstalk/Makefile.inc
+
diff --git a/collectors/python.d.plugin/beanstalk/README.md b/collectors/python.d.plugin/beanstalk/README.md
new file mode 100644
index 000000000..c2d7d5787
--- /dev/null
+++ b/collectors/python.d.plugin/beanstalk/README.md
@@ -0,0 +1,103 @@
+# beanstalk
+
+Module provides server and tube-level statistics:
+
+**Requirements:**
+ * `python-beanstalkc`
+
+**Server statistics:**
+
+1. **Cpu usage** in cpu time
+ * user
+ * system
+
+2. **Jobs rate** in jobs/s
+ * total
+ * timeouts
+
+3. **Connections rate** in connections/s
+ * connections
+
+4. **Commands rate** in commands/s
+ * put
+ * peek
+ * peek-ready
+ * peek-delayed
+ * peek-buried
+ * reserve
+ * use
+ * watch
+ * ignore
+ * delete
+ * release
+ * bury
+ * kick
+ * stats
+ * stats-job
+ * stats-tube
+ * list-tubes
+ * list-tube-used
+ * list-tubes-watched
+ * pause-tube
+
+5. **Current tubes** in tubes
+ * tubes
+
+6. **Current jobs** in jobs
+ * urgent
+ * ready
+ * reserved
+ * delayed
+ * buried
+
+7. **Current connections** in connections
+ * written
+ * producers
+ * workers
+ * waiting
+
+8. **Binlog** in records/s
+ * written
+ * migrated
+
+9. **Uptime** in seconds
+ * uptime
+
+**Per tube statistics:**
+
+1. **Jobs rate** in jobs/s
+ * jobs
+
+2. **Jobs** in jobs
+ * using
+ * ready
+ * reserved
+ * delayed
+ * buried
+
+3. **Connections** in connections
+ * using
+ * waiting
+ * watching
+
+4. **Commands** in commands/s
+ * deletes
+ * pauses
+
+5. **Pause** in seconds
+ * since
+ * left
+
+
+### configuration
+
+Sample:
+
+```yaml
+host         : '127.0.0.1'
+port         : 11300
+```
+
+If no configuration is given, module will attempt to connect to beanstalkd on `127.0.0.1:11300` address
+
+---
diff --git a/python.d/beanstalk.chart.py b/collectors/python.d.plugin/beanstalk/beanstalk.chart.py
index 8880afdd9..1472b4e1a 100644
--- a/python.d/beanstalk.chart.py
+++ b/collectors/python.d.plugin/beanstalk/beanstalk.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: beanstalk netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 try:
     import beanstalkc
@@ -8,13 +9,8 @@ try:
 except ImportError:
     BEANSTALKC = False
 
-try:
-    import yaml
-    YAML = True
-except ImportError:
-    YAML = False
-
 from bases.FrameworkServices.SimpleService import SimpleService
+from bases.loaders import safe_load
 
 # default module values (can be overridden per job in `config`)
 # update_every = 2
@@ -114,12 +110,13 @@ CHARTS = {
 
 
 def tube_chart_template(name):
-    order = ['{0}_jobs_rate'.format(name),
-             '{0}_jobs'.format(name),
-             '{0}_connections'.format(name),
-             '{0}_commands'.format(name),
-             '{0}_pause'.format(name)
-             ]
+    order = [
+        '{0}_jobs_rate'.format(name),
+        '{0}_jobs'.format(name),
+        '{0}_connections'.format(name),
+        '{0}_commands'.format(name),
+        '{0}_pause'.format(name)
+    ]
     family = 'tube {0}'.format(name)
 
     charts = {
@@ -127,7 +124,8 @@ def tube_chart_template(name):
             'options': [None, 'Job Rate', 'jobs/s', family, 'beanstalk.jobs_rate', 'area'],
             'lines': [
                 ['_'.join([name, 'total-jobs']), 'jobs', 'incremental']
-            ]},
+            ]
+        },
         order[1]: {
             'options': [None, 'Jobs', 'jobs', family, 'beanstalk.jobs', 'stacked'],
             'lines': [
@@ -136,27 +134,30 @@ def tube_chart_template(name):
                 ['_'.join([name, 'current-jobs-reserved']), 'reserved'],
                 ['_'.join([name, 'current-jobs-delayed']), 'delayed'],
                 ['_'.join([name, 'current-jobs-buried']), 'buried']
-            ]},
+            ]
+        },
         order[2]: {
             'options': [None, 'Connections', 'connections', family, 'beanstalk.connections', 'stacked'],
             'lines': [
                 ['_'.join([name, 'current-using']), 'using'],
                 ['_'.join([name, 'current-waiting']), 'waiting'],
                 ['_'.join([name, 'current-watching']), 'watching']
-            ]},
+            ]
+        },
         order[3]: {
             'options': [None, 'Commands', 'commands/s', family, 'beanstalk.commands', 'stacked'],
             'lines': [
                 ['_'.join([name, 'cmd-delete']), 'deletes', 'incremental'],
                 ['_'.join([name, 'cmd-pause-tube']), 'pauses', 'incremental']
-            ]},
+            ]
+        },
         order[4]: {
             'options': [None, 'Pause', 'seconds', family, 'beanstalk.pause', 'stacked'],
             'lines': [
                 ['_'.join([name, 'pause']), 'since'],
                 ['_'.join([name, 'pause-time-left']), 'left']
-            ]}
-
+            ]
+        }
     }
 
     return order, charts
@@ -176,10 +177,6 @@ class Service(SimpleService):
             self.error("'beanstalkc' module is needed to use beanstalk.chart.py")
             return False
 
-        if not YAML:
-            self.error("'yaml' module is needed to use beanstalk.chart.py")
-            return False
-
         self.conn = self.connect()
 
         return True if self.conn else False
@@ -231,7 +228,7 @@ class Service(SimpleService):
             return beanstalkc.Connection(host=host,
                                          port=port,
                                          connect_timeout=timeout,
-                                         parse_yaml=yaml.load)
+                                         parse_yaml=safe_load)
         except beanstalkc.SocketError as error:
             self.error('Connection to {0}:{1} failed: {2}'.format(host, port, error))
             return None
diff --git a/conf.d/python.d/beanstalk.conf b/collectors/python.d.plugin/beanstalk/beanstalk.conf
index 940801877..940801877 100644
--- a/conf.d/python.d/beanstalk.conf
+++ b/collectors/python.d.plugin/beanstalk/beanstalk.conf
diff --git a/collectors/python.d.plugin/bind_rndc/Makefile.inc b/collectors/python.d.plugin/bind_rndc/Makefile.inc
new file mode 100644
index 000000000..72f391492
--- /dev/null
+++ b/collectors/python.d.plugin/bind_rndc/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += bind_rndc/bind_rndc.chart.py
+dist_pythonconfig_DATA += bind_rndc/bind_rndc.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += bind_rndc/README.md bind_rndc/Makefile.inc
+
diff --git a/collectors/python.d.plugin/bind_rndc/README.md b/collectors/python.d.plugin/bind_rndc/README.md
new file mode 100644
index 000000000..688297ab3
--- /dev/null
+++ b/collectors/python.d.plugin/bind_rndc/README.md
@@ -0,0 +1,60 @@
+# bind_rndc
+
+Module parses bind dump file to collect real-time performance metrics
+
+**Requirements:**
+ * Version of bind must be 9.6 +
+ * Netdata must have permissions to run `rndc stats`
+
+It produces:
+
+1. **Name server statistics**
+ * requests
+ * responses
+ * success
+ * auth_answer
+ * nonauth_answer
+ * nxrrset
+ * failure
+ * nxdomain
+ * recursion
+ * duplicate
+ * rejections
+
+2. **Incoming queries**
+ * RESERVED0
+ * A
+ * NS
+ * CNAME
+ * SOA
+ * PTR
+ * MX
+ * TXT
+ * X25
+ * AAAA
+ * SRV
+ * NAPTR
+ * A6
+ * DS
+ * RSIG
+ * DNSKEY
+ * SPF
+ * ANY
+ * DLV
+
+3. **Outgoing queries**
+ * Same as Incoming queries
+
+
+### configuration
+
+Sample:
+
+```yaml
+local:
+  named_stats_path       : '/var/log/bind/named.stats'
+```
+
+If no configuration is given, module will attempt to read named.stats file  at `/var/log/bind/named.stats`
+
+---
diff --git a/python.d/bind_rndc.chart.py b/collectors/python.d.plugin/bind_rndc/bind_rndc.chart.py
index cc96659b2..423232f65 100644
--- a/python.d/bind_rndc.chart.py
+++ b/collectors/python.d.plugin/bind_rndc/bind_rndc.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: bind rndc netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import os
 
@@ -35,56 +36,50 @@ CHARTS = {
             ['nms_dropped_queries', 'dropped_queries', 'incremental'],
         ]},
     'incoming_queries': {
-        'options': [None, 'Incoming Queries', 'queries', 'incoming queries',
-                    'bind_rndc.incoming_queries', 'line'],
+        'options': [None, 'Incoming Queries', 'queries', 'incoming queries', 'bind_rndc.incoming_queries', 'line'],
         'lines': [
         ]},
     'outgoing_queries': {
-        'options': [None, 'Outgoing Queries', 'queries', 'outgoing queries',
-                    'bind_rndc.outgoing_queries', 'line'],
+        'options': [None, 'Outgoing Queries', 'queries', 'outgoing queries', 'bind_rndc.outgoing_queries', 'line'],
         'lines': [
         ]},
     'named_stats_size': {
-        'options': [None, 'Named Stats File Size', 'MB', 'file size',
-                    'bind_rndc.stats_size', 'line'],
+        'options': [None, 'Named Stats File Size', 'MB', 'file size', 'bind_rndc.stats_size', 'line'],
         'lines': [
             ['stats_size', None, 'absolute', 1, 1 << 20]
-        ]}
+        ]
+    }
 }
 
 NMS = {
-    'nms_requests':
-        ['IPv4 requests received',
-         'IPv6 requests received',
-         'TCP requests received',
-         'requests with EDNS(0) receive'],
-    'nms_responses':
-        ['responses sent',
-         'truncated responses sent',
-         'responses with EDNS(0) sent',
-         'requests with unsupported EDNS version received'],
-    'nms_failure':
-        ['other query failures',
-         'queries resulted in SERVFAIL'],
-    'nms_auth_answer':
-        ['queries resulted in authoritative answer'],
-    'nms_non_auth_answer':
-        ['queries resulted in non authoritative answer'],
-    'nms_nxrrset':
-        ['queries resulted in nxrrset'],
-    'nms_success':
-        ['queries resulted in successful answer'],
-    'nms_nxdomain':
-        ['queries resulted in NXDOMAIN'],
-    'nms_recursion':
-        ['queries caused recursion'],
-    'nms_duplicate':
-        ['duplicate queries received'],
-    'nms_rejected_queries':
-        ['auth queries rejected',
-         'recursive queries rejected'],
-    'nms_dropped_queries':
-        ['queries dropped']
+    'nms_requests': [
+        'IPv4 requests received',
+        'IPv6 requests received',
+        'TCP requests received',
+        'requests with EDNS(0) receive'
+    ],
+    'nms_responses': [
+        'responses sent',
+        'truncated responses sent',
+        'responses with EDNS(0) sent',
+        'requests with unsupported EDNS version received'
+    ],
+    'nms_failure': [
+        'other query failures',
+        'queries resulted in SERVFAIL'
+    ],
+    'nms_auth_answer': ['queries resulted in authoritative answer'],
+    'nms_non_auth_answer': ['queries resulted in non authoritative answer'],
+    'nms_nxrrset': ['queries resulted in nxrrset'],
+    'nms_success': ['queries resulted in successful answer'],
+    'nms_nxdomain': ['queries resulted in NXDOMAIN'],
+    'nms_recursion': ['queries caused recursion'],
+    'nms_duplicate': ['duplicate queries received'],
+    'nms_rejected_queries': [
+        'auth queries rejected',
+        'recursive queries rejected'
+    ],
+    'nms_dropped_queries': ['queries dropped']
 }
 
 STATS = ['Name Server Statistics', 'Incoming Queries', 'Outgoing Queries']
@@ -215,7 +210,9 @@ def parse_stats(field, named_stats):
                 if '[' in line:
                     continue
                 v, k = line.strip().split(' ', 1)
-                data[k] = int(v)
+                if k not in data:
+                    data[k] = 0
+                data[k] += int(v)
                 continue
             break
         break
diff --git a/conf.d/python.d/bind_rndc.conf b/collectors/python.d.plugin/bind_rndc/bind_rndc.conf
index 71958ff98..71958ff98 100644
--- a/conf.d/python.d/bind_rndc.conf
+++ b/collectors/python.d.plugin/bind_rndc/bind_rndc.conf
diff --git a/collectors/python.d.plugin/boinc/Makefile.inc b/collectors/python.d.plugin/boinc/Makefile.inc
new file mode 100644
index 000000000..319e19cfe
--- /dev/null
+++ b/collectors/python.d.plugin/boinc/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += boinc/boinc.chart.py
+dist_pythonconfig_DATA += boinc/boinc.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += boinc/README.md boinc/Makefile.inc
+
diff --git a/collectors/python.d.plugin/boinc/README.md b/collectors/python.d.plugin/boinc/README.md
new file mode 100644
index 000000000..595bcd3c0
--- /dev/null
+++ b/collectors/python.d.plugin/boinc/README.md
@@ -0,0 +1,28 @@
+# boinc
+
+This module monitors task counts for the Berkely Open Infrastructure
+Networking Computing (BOINC) distributed computing client using the same
+RPC interface that the BOINC monitoring GUI does.
+
+It provides charts tracking the total number of tasks and active tasks,
+as well as ones tracking each of the possible states for tasks.
+
+### configuration
+
+BOINC requires use of a password to access it's RPC interface.  You can
+find this password in the `gui_rpc_auth.cfg` file in your BOINC directory.
+
+By default, the module will try to auto-detect the password by looking
+in `/var/lib/boinc` for this file (this is the location most Linux
+distributions use for a system-wide BOINC installation), so things may
+just work without needing configuration for the local system.
+
+You can monitor remote systems as well:
+
+```yaml
+remote:
+  hostname: some-host
+  password: some-password
+```
+
+---
diff --git a/collectors/python.d.plugin/boinc/boinc.chart.py b/collectors/python.d.plugin/boinc/boinc.chart.py
new file mode 100644
index 000000000..d14754c4b
--- /dev/null
+++ b/collectors/python.d.plugin/boinc/boinc.chart.py
@@ -0,0 +1,162 @@
+# -*- coding: utf-8 -*-
+# Description: BOINC netdata python.d module
+# Author: Austin S. Hemmelgarn (Ferroin)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import socket
+
+from bases.FrameworkServices.SimpleService import SimpleService
+
+from third_party import boinc_client
+
+
+ORDER = ['tasks', 'states', 'sched_states', 'process_states']
+
+CHARTS = {
+    'tasks': {
+        'options': [None, 'Overall Tasks', 'tasks', 'boinc', 'boinc.tasks', 'line'],
+        'lines': [
+            ['total', 'Total', 'absolute', 1, 1],
+            ['active', 'Active', 'absolute', 1, 1]
+        ]
+    },
+    'states': {
+        'options': [None, 'Tasks per State', 'tasks', 'boinc', 'boinc.states', 'line'],
+        'lines': [
+            ['new', 'New', 'absolute', 1, 1],
+            ['downloading', 'Downloading', 'absolute', 1, 1],
+            ['downloaded', 'Ready to Run', 'absolute', 1, 1],
+            ['comperror', 'Compute Errors', 'absolute', 1, 1],
+            ['uploading', 'Uploading', 'absolute', 1, 1],
+            ['uploaded', 'Uploaded', 'absolute', 1, 1],
+            ['aborted', 'Aborted', 'absolute', 1, 1],
+            ['upload_failed', 'Failed Uploads', 'absolute', 1, 1]
+        ]
+    },
+    'sched_states': {
+        'options': [None, 'Tasks per Scheduler State', 'tasks', 'boinc', 'boinc.sched', 'line'],
+        'lines': [
+            ['uninit_sched', 'Uninitialized', 'absolute', 1, 1],
+            ['preempted', 'Preempted', 'absolute', 1, 1],
+            ['scheduled', 'Scheduled', 'absolute', 1, 1]
+        ]
+    },
+    'process_states': {
+        'options': [None, 'Tasks per Process State', 'tasks', 'boinc', 'boinc.process', 'line'],
+        'lines': [
+            ['uninit_proc', 'Uninitialized', 'absolute', 1, 1],
+            ['executing', 'Executing', 'absolute', 1, 1],
+            ['suspended', 'Suspended', 'absolute', 1, 1],
+            ['aborting', 'Aborted', 'absolute', 1, 1],
+            ['quit', 'Quit', 'absolute', 1, 1],
+            ['copy_pending', 'Copy Pending', 'absolute', 1, 1]
+        ]
+    }
+}
+
+# A simple template used for pre-loading the return dictionary to make
+# the _get_data() method simpler.
+_DATA_TEMPLATE = {
+    'total': 0,
+    'active': 0,
+    'new': 0,
+    'downloading': 0,
+    'downloaded': 0,
+    'comperror': 0,
+    'uploading': 0,
+    'uploaded': 0,
+    'aborted': 0,
+    'upload_failed': 0,
+    'uninit_sched': 0,
+    'preempted': 0,
+    'scheduled': 0,
+    'uninit_proc': 0,
+    'executing': 0,
+    'suspended': 0,
+    'aborting': 0,
+    'quit': 0,
+    'copy_pending': 0
+}
+
+# Map task states to dimensions
+_TASK_MAP = {
+    boinc_client.ResultState.NEW: 'new',
+    boinc_client.ResultState.FILES_DOWNLOADING: 'downloading',
+    boinc_client.ResultState.FILES_DOWNLOADED: 'downloaded',
+    boinc_client.ResultState.COMPUTE_ERROR: 'comperror',
+    boinc_client.ResultState.FILES_UPLOADING: 'uploading',
+    boinc_client.ResultState.FILES_UPLOADED: 'uploaded',
+    boinc_client.ResultState.ABORTED: 'aborted',
+    boinc_client.ResultState.UPLOAD_FAILED: 'upload_failed'
+}
+
+# Map scheduler states to dimensions
+_SCHED_MAP = {
+    boinc_client.CpuSched.UNINITIALIZED: 'uninit_sched',
+    boinc_client.CpuSched.PREEMPTED: 'preempted',
+    boinc_client.CpuSched.SCHEDULED: 'scheduled',
+}
+
+# Maps process states to dimensions
+_PROC_MAP = {
+    boinc_client.Process.UNINITIALIZED: 'uninit_proc',
+    boinc_client.Process.EXECUTING: 'executing',
+    boinc_client.Process.SUSPENDED: 'suspended',
+    boinc_client.Process.ABORT_PENDING: 'aborted',
+    boinc_client.Process.QUIT_PENDING: 'quit',
+    boinc_client.Process.COPY_PENDING: 'copy_pending'
+}
+
+
+class Service(SimpleService):
+    def __init__(self, configuration=None, name=None):
+        SimpleService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+        self.host = self.configuration.get('host', 'localhost')
+        self.port = self.configuration.get('port', 0)
+        self.password = self.configuration.get('password', '')
+        self.client = boinc_client.BoincClient(host=self.host, port=self.port, passwd=self.password)
+        self.alive = False
+
+    def check(self):
+        return self.connect()
+
+    def connect(self):
+        self.client.connect()
+        self.alive = self.client.connected and self.client.authorized
+        return self.alive
+
+    def reconnect(self):
+        # The client class itself actually disconnects existing
+        # connections when it is told to connect, so we don't need to
+        # explicitly disconnect when we're just trying to reconnect.
+        return self.connect()
+
+    def is_alive(self):
+        if not self.alive:
+            return self.reconnect()
+        return True
+
+    def _get_data(self):
+        if not self.is_alive():
+            return None
+        data = dict(_DATA_TEMPLATE)
+        results = []
+        try:
+            results = self.client.get_tasks()
+        except socket.error:
+            self.error('Connection is dead')
+            self.alive = False
+            return None
+        for task in results:
+            data['total'] += 1
+            data[_TASK_MAP[task.state]] += 1
+            try:
+                if task.active_task:
+                    data['active'] += 1
+                    data[_SCHED_MAP[task.scheduler_state]] += 1
+                    data[_PROC_MAP[task.active_task_state]] += 1
+            except AttributeError:
+                pass
+        return data
diff --git a/collectors/python.d.plugin/boinc/boinc.conf b/collectors/python.d.plugin/boinc/boinc.conf
new file mode 100644
index 000000000..e59d2509d
--- /dev/null
+++ b/collectors/python.d.plugin/boinc/boinc.conf
@@ -0,0 +1,68 @@
+# netdata python.d.plugin configuration for boinc
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# Additionally to the above, boinc also supports the following:
+#
+#     hostname: localhost     # The host running the BOINC client
+#     port: 31416             # The remote GUI RPC port for BOINC
+#     password: ''            # The remote GUI RPC password
diff --git a/collectors/python.d.plugin/ceph/Makefile.inc b/collectors/python.d.plugin/ceph/Makefile.inc
new file mode 100644
index 000000000..15b039ef6
--- /dev/null
+++ b/collectors/python.d.plugin/ceph/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += ceph/ceph.chart.py
+dist_pythonconfig_DATA += ceph/ceph.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += ceph/README.md ceph/Makefile.inc
+
diff --git a/collectors/python.d.plugin/ceph/README.md b/collectors/python.d.plugin/ceph/README.md
new file mode 100644
index 000000000..29dfe5d1d
--- /dev/null
+++ b/collectors/python.d.plugin/ceph/README.md
@@ -0,0 +1,32 @@
+# ceph
+
+This module monitors the ceph cluster usage and consuption data of a server.
+
+It produces:
+
+* Cluster statistics (usage, available, latency, objects, read/write rate)
+* OSD usage
+* OSD latency
+* Pool usage
+* Pool read/write operations
+* Pool read/write rate
+* number of objects per pool
+
+**Requirements:**
+
+- `rados` python module
+- Granting read permissions to ceph group from keyring file
+```shell
+# chmod 640 /etc/ceph/ceph.client.admin.keyring
+```
+
+### Configuration
+
+Sample:
+```yaml
+local:
+  config_file: '/etc/ceph/ceph.conf'
+  keyring_file: '/etc/ceph/ceph.client.admin.keyring'
+```
+
+---
diff --git a/python.d/ceph.chart.py b/collectors/python.d.plugin/ceph/ceph.chart.py
index fb78397d0..31c764d0f 100644
--- a/python.d/ceph.chart.py
+++ b/collectors/python.d.plugin/ceph/ceph.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: ceph netdata python.d module
 # Author: Luis Eduardo (lets00)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 try:
     import rados
@@ -8,6 +9,7 @@ try:
 except ImportError:
     CEPH = False
 
+import os
 import json
 from bases.FrameworkServices.SimpleService import SimpleService
 
@@ -16,17 +18,29 @@ update_every = 10
 priority = 60000
 retries = 60
 
-ORDER = ['general_usage', 'general_objects', 'general_bytes', 'general_operations',
-         'general_latency', 'pool_usage', 'pool_objects', 'pool_read_bytes',
-         'pool_write_bytes', 'pool_read_operations', 'pool_write_operations', 'osd_usage',
-         'osd_apply_latency', 'osd_commit_latency']
+ORDER = [
+    'general_usage',
+    'general_objects',
+    'general_bytes',
+    'general_operations',
+    'general_latency',
+    'pool_usage',
+    'pool_objects',
+    'pool_read_bytes',
+    'pool_write_bytes',
+    'pool_read_operations',
+    'pool_write_operations',
+    'osd_usage',
+    'osd_apply_latency',
+    'osd_commit_latency'
+]
 
 CHARTS = {
     'general_usage': {
         'options': [None, 'Ceph General Space', 'KB', 'general', 'ceph.general_usage', 'stacked'],
         'lines': [
-            ['general_available', 'avail', 'absolute', 1, 1024],
-            ['general_usage', 'used', 'absolute', 1, 1024]
+            ['general_available', 'avail', 'absolute'],
+            ['general_usage', 'used', 'absolute']
         ]
     },
     'general_objects': {
@@ -118,6 +132,20 @@ class Service(SimpleService):
         if not (self.config_file and self.keyring_file):
             self.error('config_file and/or keyring_file is not defined')
             return False
+
+        # Verify files and permissions
+        if not (os.access(self.config_file, os.F_OK)):
+            self.error('{0} does not exist'.format(self.config_file))
+            return False
+        if not (os.access(self.keyring_file, os.F_OK)):
+            self.error('{0} does not exist'.format(self.keyring_file))
+            return False
+        if not (os.access(self.config_file, os.R_OK)):
+            self.error('Ceph plugin does not read {0}, define read permission.'.format(self.config_file))
+            return False
+        if not (os.access(self.keyring_file, os.R_OK)):
+            self.error('Ceph plugin does not read {0}, define read permission.'.format(self.keyring_file))
+            return False
         try:
             self.cluster = rados.Rados(conffile=self.config_file,
                                        conf=dict(keyring=self.keyring_file))
@@ -148,11 +176,11 @@ class Service(SimpleService):
                                                                  pool['name'],
                                                                  'absolute', 1, 1024])
             self.definitions['pool_read_operations']['lines'].append(['read_operations_{0}'.format(pool['name']),
-                                                                pool['name'],
-                                                                'absolute'])
+                                                                     pool['name'],
+                                                                     'absolute'])
             self.definitions['pool_write_operations']['lines'].append(['write_operations_{0}'.format(pool['name']),
-                                                                 pool['name'],
-                                                                 'absolute'])
+                                                                      pool['name'],
+                                                                      'absolute'])
 
         # OSD lines
         for osd in sorted(self._get_osd_df()['nodes']):
@@ -214,16 +242,17 @@ class Service(SimpleService):
             apply_latency += perf['perf_stats']['apply_latency_ms']
             commit_latency += perf['perf_stats']['commit_latency_ms']
 
-        return {'general_usage': int(status['kb_used']),
-                'general_available': int(status['kb_avail']),
-                'general_objects': int(status['num_objects']),
-                'general_read_bytes': read_bytes_sec,
-                'general_write_bytes': write_bytes_sec,
-                'general_read_operations': read_op_per_sec,
-                'general_write_operations': write_op_per_sec,
-                'general_apply_latency': apply_latency,
-                'general_commit_latency': commit_latency
-                }
+        return {
+            'general_usage': int(status['kb_used']),
+            'general_available': int(status['kb_avail']),
+            'general_objects': int(status['num_objects']),
+            'general_read_bytes': read_bytes_sec,
+            'general_write_bytes': write_bytes_sec,
+            'general_read_operations': read_op_per_sec,
+            'general_write_operations': write_op_per_sec,
+            'general_apply_latency': apply_latency,
+            'general_commit_latency': commit_latency
+        }
 
     @staticmethod
     def _get_pool_usage(pool):
@@ -247,11 +276,12 @@ class Service(SimpleService):
         Get read/write kb and operations in a pool
         :return: A pool dict with both read/write bytes and operations.
         """
-        return {'read_{0}'.format(pool['pool_name']): int(pool['client_io_rate'].get('read_bytes_sec', 0)),
-                'write_{0}'.format(pool['pool_name']): int(pool['client_io_rate'].get('write_bytes_sec', 0)),
-                'read_operations_{0}'.format(pool['pool_name']): int(pool['client_io_rate'].get('read_op_per_sec', 0)),
-                'write_operations_{0}'.format(pool['pool_name']): int(pool['client_io_rate'].get('write_op_per_sec', 0))
-                }
+        return {
+            'read_{0}'.format(pool['pool_name']): int(pool['client_io_rate'].get('read_bytes_sec', 0)),
+            'write_{0}'.format(pool['pool_name']): int(pool['client_io_rate'].get('write_bytes_sec', 0)),
+            'read_operations_{0}'.format(pool['pool_name']): int(pool['client_io_rate'].get('read_op_per_sec', 0)),
+            'write_operations_{0}'.format(pool['pool_name']): int(pool['client_io_rate'].get('write_op_per_sec', 0))
+        }
 
     @staticmethod
     def _get_osd_usage(osd):
@@ -267,8 +297,10 @@ class Service(SimpleService):
         Get ceph osd apply and commit latency
         :return: A osd dict with osd name's key with both apply and commit latency values
         """
-        return {'apply_latency_osd.{0}'.format(osd['id']): osd['perf_stats']['apply_latency_ms'],
-                'commit_latency_osd.{0}'.format(osd['id']): osd['perf_stats']['commit_latency_ms']}
+        return {
+            'apply_latency_osd.{0}'.format(osd['id']): osd['perf_stats']['apply_latency_ms'],
+            'commit_latency_osd.{0}'.format(osd['id']): osd['perf_stats']['commit_latency_ms']
+        }
 
     def _get_df(self):
         """
diff --git a/conf.d/python.d/ceph.conf b/collectors/python.d.plugin/ceph/ceph.conf
index 78ac1e251..78ac1e251 100644
--- a/conf.d/python.d/ceph.conf
+++ b/collectors/python.d.plugin/ceph/ceph.conf
diff --git a/collectors/python.d.plugin/chrony/Makefile.inc b/collectors/python.d.plugin/chrony/Makefile.inc
new file mode 100644
index 000000000..18a805b12
--- /dev/null
+++ b/collectors/python.d.plugin/chrony/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += chrony/chrony.chart.py
+dist_pythonconfig_DATA += chrony/chrony.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += chrony/README.md chrony/Makefile.inc
+
diff --git a/collectors/python.d.plugin/chrony/README.md b/collectors/python.d.plugin/chrony/README.md
new file mode 100644
index 000000000..30636fe77
--- /dev/null
+++ b/collectors/python.d.plugin/chrony/README.md
@@ -0,0 +1,31 @@
+# chrony
+
+This module monitors the precision and statistics of a local chronyd server.
+
+It produces:
+
+* frequency
+* last offset
+* RMS offset
+* residual freq
+* root delay
+* root dispersion
+* skew
+* system time
+
+**Requirements:**
+Verify that user netdata can execute `chronyc tracking`. If necessary, update `/etc/chrony.conf`, `cmdallow`.
+
+### Configuration
+
+Sample:
+```yaml
+# data collection frequency:
+update_every: 1
+
+# chrony query command:
+local:
+  command: 'chronyc -n tracking'
+```
+
+---
diff --git a/python.d/chrony.chart.py b/collectors/python.d.plugin/chrony/chrony.chart.py
index 8f331fa50..fd01d4e85 100644
--- a/python.d/chrony.chart.py
+++ b/collectors/python.d.plugin/chrony/chrony.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: chrony netdata python.d module
 # Author: Dominik Schloesser (domschl)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.FrameworkServices.ExecutableService import ExecutableService
 
@@ -13,66 +14,70 @@ retries = 10
 ORDER = ['system', 'offsets', 'stratum', 'root', 'frequency', 'residualfreq', 'skew']
 
 CHARTS = {
-    # id: {
-    #     'options': [name, title, units, family, context, charttype],
-    #     'lines': [
-    #         [unique_dimension_name, name, algorithm, multiplier, divisor]
-    #     ]}
     'system': {
-        'options': [None, "Chrony System Time Deltas", "microseconds", 'system', 'chrony.system', 'area'],
+        'options': [None, 'Chrony System Time Deltas', 'microseconds', 'system', 'chrony.system', 'area'],
         'lines': [
-            ['timediff',   'system time', 'absolute', 1, 1000]
-        ]},
+            ['timediff', 'system time', 'absolute', 1, 1000]
+        ]
+    },
     'offsets': {
-        'options': [None, "Chrony System Time Offsets", "microseconds", 'system', 'chrony.offsets', 'area'],
+        'options': [None, 'Chrony System Time Offsets', 'microseconds', 'system', 'chrony.offsets', 'area'],
         'lines': [
             ['lastoffset', 'last offset', 'absolute', 1, 1000],
-            ['rmsoffset',  'RMS offset',  'absolute', 1, 1000]
-        ]},
+            ['rmsoffset', 'RMS offset', 'absolute', 1, 1000]
+        ]
+    },
     'stratum': {
-        'options': [None, "Chrony Stratum", "stratum", 'root', 'chrony.stratum', 'line'],
+        'options': [None, 'Chrony Stratum', 'stratum', 'root', 'chrony.stratum', 'line'],
         'lines': [
             ['stratum', None, 'absolute', 1, 1]
-        ]},
+        ]
+    },
     'root': {
-        'options': [None, "Chrony Root Delays", "milliseconds", 'root', 'chrony.root', 'line'],
+        'options': [None, 'Chrony Root Delays', 'milliseconds', 'root', 'chrony.root', 'line'],
         'lines': [
-            ['rootdelay',      'delay',      'absolute', 1, 1000000],
+            ['rootdelay', 'delay', 'absolute', 1, 1000000],
             ['rootdispersion', 'dispersion', 'absolute', 1, 1000000]
-        ]},
+        ]
+    },
     'frequency': {
-        'options': [None, "Chrony Frequency", "ppm", 'frequencies', 'chrony.frequency', 'area'],
+        'options': [None, 'Chrony Frequency', 'ppm', 'frequencies', 'chrony.frequency', 'area'],
         'lines': [
             ['frequency', None, 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'residualfreq': {
-        'options': [None, "Chrony Residual frequency", "ppm", 'frequencies', 'chrony.residualfreq', 'area'],
+        'options': [None, 'Chrony Residual frequency', 'ppm', 'frequencies', 'chrony.residualfreq', 'area'],
         'lines': [
             ['residualfreq', 'residual frequency', 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'skew': {
-        'options': [None, "Chrony Skew, error bound on frequency", "ppm", 'frequencies', 'chrony.skew', 'area'],
+        'options': [None, 'Chrony Skew, error bound on frequency', 'ppm', 'frequencies', 'chrony.skew', 'area'],
         'lines': [
             ['skew', None, 'absolute', 1, 1000]
-        ]}
+        ]
+    }
 }
 
-CHRONY = [('Frequency', 'frequency', 1e3),
-          ('Last offset', 'lastoffset', 1e9),
-          ('RMS offset', 'rmsoffset', 1e9),
-          ('Residual freq', 'residualfreq', 1e3),
-          ('Root delay', 'rootdelay', 1e9),
-          ('Root dispersion', 'rootdispersion', 1e9),
-          ('Skew', 'skew', 1e3),
-          ('Stratum', 'stratum', 1),
-          ('System time', 'timediff', 1e9)]
+CHRONY = [
+    ('Frequency', 'frequency', 1e3),
+    ('Last offset', 'lastoffset', 1e9),
+    ('RMS offset', 'rmsoffset', 1e9),
+    ('Residual freq', 'residualfreq', 1e3),
+    ('Root delay', 'rootdelay', 1e9),
+    ('Root dispersion', 'rootdispersion', 1e9),
+    ('Skew', 'skew', 1e3),
+    ('Stratum', 'stratum', 1),
+    ('System time', 'timediff', 1e9)
+]
 
 
 class Service(ExecutableService):
     def __init__(self, configuration=None, name=None):
         ExecutableService.__init__(
             self, configuration=configuration, name=name)
-        self.command = "chronyc -n tracking"
+        self.command = 'chronyc -n tracking'
         self.order = ORDER
         self.definitions = CHARTS
 
diff --git a/conf.d/python.d/chrony.conf b/collectors/python.d.plugin/chrony/chrony.conf
index 9ac906b5f..9ac906b5f 100644
--- a/conf.d/python.d/chrony.conf
+++ b/collectors/python.d.plugin/chrony/chrony.conf
diff --git a/collectors/python.d.plugin/couchdb/Makefile.inc b/collectors/python.d.plugin/couchdb/Makefile.inc
new file mode 100644
index 000000000..89dfb51c7
--- /dev/null
+++ b/collectors/python.d.plugin/couchdb/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += couchdb/couchdb.chart.py
+dist_pythonconfig_DATA += couchdb/couchdb.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += couchdb/README.md couchdb/Makefile.inc
+
diff --git a/collectors/python.d.plugin/couchdb/README.md b/collectors/python.d.plugin/couchdb/README.md
new file mode 100644
index 000000000..eff8c0810
--- /dev/null
+++ b/collectors/python.d.plugin/couchdb/README.md
@@ -0,0 +1,35 @@
+# couchdb
+
+This module monitors vital statistics of a local Apache CouchDB 2.x server, including:
+
+* Overall server reads/writes
+* HTTP traffic breakdown
+  * Request methods (`GET`, `PUT`, `POST`, etc.)
+  * Response status codes (`200`, `201`, `4xx`, etc.)
+* Active server tasks
+* Replication status (CouchDB 2.1 and up only)
+* Erlang VM stats
+* Optional per-database statistics: sizes, # of docs, # of deleted docs
+
+### Configuration
+
+Sample for a local server running on port 5984:
+```yaml
+local:
+  user: 'admin'
+  pass: 'password'
+  node: 'couchdb@127.0.0.1'
+```
+
+Be sure to specify a correct admin-level username and password.
+
+You may also need to change the `node` name; this should match the value of `-name NODENAME` in your CouchDB's `etc/vm.args` file. Typically this is of the form `couchdb@fully.qualified.domain.name` in a cluster, or `couchdb@127.0.0.1` / `couchdb@localhost` for a single-node server.
+
+If you want per-database statistics, these need to be added to the configuration, separated by spaces:
+```yaml
+local:
+  ...
+  databases: 'db1 db2 db3 ...'
+```
+
+---
diff --git a/python.d/couchdb.chart.py b/collectors/python.d.plugin/couchdb/couchdb.chart.py
index 558bac587..5d6b9916f 100644
--- a/python.d/couchdb.chart.py
+++ b/collectors/python.d.plugin/couchdb/couchdb.chart.py
@@ -2,6 +2,7 @@
 # Description: couchdb netdata python.d module
 # Author: wohali <wohali@apache.org>
 # Thanks to l2isbad for good examples :)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from collections import namedtuple, defaultdict
 from json import loads
@@ -24,7 +25,7 @@ METHODS = namedtuple('METHODS', ['get_data', 'url', 'stats'])
 OVERVIEW_STATS = [
     'couchdb.database_reads.value',
     'couchdb.database_writes.value',
-    'couchdb.httpd.view_reads.value'
+    'couchdb.httpd.view_reads.value',
     'couchdb.httpd_request_methods.COPY.value',
     'couchdb.httpd_request_methods.DELETE.value',
     'couchdb.httpd_request_methods.GET.value',
diff --git a/conf.d/python.d/couchdb.conf b/collectors/python.d.plugin/couchdb/couchdb.conf
index 5f6e75cff..5f6e75cff 100644
--- a/conf.d/python.d/couchdb.conf
+++ b/collectors/python.d.plugin/couchdb/couchdb.conf
diff --git a/collectors/python.d.plugin/cpufreq/Makefile.inc b/collectors/python.d.plugin/cpufreq/Makefile.inc
new file mode 100644
index 000000000..d6138801d
--- /dev/null
+++ b/collectors/python.d.plugin/cpufreq/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += cpufreq/cpufreq.chart.py
+dist_pythonconfig_DATA += cpufreq/cpufreq.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += cpufreq/README.md cpufreq/Makefile.inc
+
diff --git a/collectors/python.d.plugin/cpufreq/README.md b/collectors/python.d.plugin/cpufreq/README.md
new file mode 100644
index 000000000..33891d59d
--- /dev/null
+++ b/collectors/python.d.plugin/cpufreq/README.md
@@ -0,0 +1,30 @@
+# cpufreq
+
+This module shows the current CPU frequency as set by the cpufreq kernel
+module.
+
+**Requirement:**
+You need to have `CONFIG_CPU_FREQ` and (optionally) `CONFIG_CPU_FREQ_STAT`
+enabled in your kernel.
+
+This module tries to read from one of two possible locations. On
+initialization, it tries to read the `time_in_state` files provided by
+cpufreq\_stats. If this file does not exist, or doesn't contain valid data, it
+falls back to using the more inaccurate `scaling_cur_freq` file (which only
+represents the **current** CPU frequency, and doesn't account for any state
+changes which happen between updates).
+
+It produces one chart with multiple lines (one line per core).
+
+### configuration
+
+Sample:
+
+```yaml
+sys_dir: "/sys/devices"
+```
+
+If no configuration is given, module will search for cpufreq files in `/sys/devices` directory.
+Directory is also prefixed with `NETDATA_HOST_PREFIX` if specified.
+
+---
diff --git a/python.d/cpufreq.chart.py b/collectors/python.d.plugin/cpufreq/cpufreq.chart.py
index 3abde736c..cbbab6d7f 100644
--- a/python.d/cpufreq.chart.py
+++ b/collectors/python.d.plugin/cpufreq/cpufreq.chart.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 # Description: cpufreq netdata python.d module
-# Author: Pawel Krupa (paulfantom) and Steven Noonan (tycho)
+# Author: Pawel Krupa (paulfantom)
+# Author: Steven Noonan (tycho)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import glob
 import os
@@ -17,7 +19,8 @@ CHARTS = {
         'options': [None, 'CPU Clock', 'MHz', 'cpufreq', 'cpufreq.cpufreq', 'line'],
         'lines': [
             # lines are created dynamically in `check()` method
-        ]}
+        ]
+    }
 }
 
 
@@ -92,7 +95,7 @@ class Service(SimpleService):
             self.assignment[cpu]['accurate'] = path
             self.accurate_last[cpu] = {}
 
-        if len(self.assignment) == 0:
+        if not self.assignment:
             self.accurate_exists = False
 
         for path in glob.glob(self.sys_dir + '/system/cpu/cpu*/cpufreq/scaling_cur_freq'):
@@ -102,7 +105,7 @@ class Service(SimpleService):
                 self.assignment[cpu] = {}
             self.assignment[cpu]['inaccurate'] = path
 
-        if len(self.assignment) == 0:
+        if not self.assignment:
             self.error("couldn't find a method to read cpufreq statistics")
             return False
 
@@ -110,4 +113,3 @@ class Service(SimpleService):
             self.definitions[ORDER[0]]['lines'].append([name, name, 'absolute', 1, 1000])
 
         return True
-
diff --git a/conf.d/python.d/cpufreq.conf b/collectors/python.d.plugin/cpufreq/cpufreq.conf
index 0890245d9..0890245d9 100644
--- a/conf.d/python.d/cpufreq.conf
+++ b/collectors/python.d.plugin/cpufreq/cpufreq.conf
diff --git a/collectors/python.d.plugin/cpuidle/Makefile.inc b/collectors/python.d.plugin/cpuidle/Makefile.inc
new file mode 100644
index 000000000..66c47d3cf
--- /dev/null
+++ b/collectors/python.d.plugin/cpuidle/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += cpuidle/cpuidle.chart.py
+dist_pythonconfig_DATA += cpuidle/cpuidle.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += cpuidle/README.md cpuidle/Makefile.inc
+
diff --git a/collectors/python.d.plugin/cpuidle/README.md b/collectors/python.d.plugin/cpuidle/README.md
new file mode 100644
index 000000000..495169638
--- /dev/null
+++ b/collectors/python.d.plugin/cpuidle/README.md
@@ -0,0 +1,11 @@
+# cpuidle
+
+This module monitors the usage of CPU idle states.
+
+**Requirement:**
+Your kernel needs to have `CONFIG_CPU_IDLE` enabled.
+
+It produces one stacked chart per CPU, showing the percentage of time spent in
+each state.
+
+---
diff --git a/python.d/cpuidle.chart.py b/collectors/python.d.plugin/cpuidle/cpuidle.chart.py
index d14c6aaf3..feac025bf 100644
--- a/python.d/cpuidle.chart.py
+++ b/collectors/python.d.plugin/cpuidle/cpuidle.chart.py
@@ -1,14 +1,15 @@
 # -*- coding: utf-8 -*-
 # Description: cpuidle netdata python.d module
 # Author: Steven Noonan (tycho)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
+import ctypes
 import glob
 import os
 import platform
 
 from bases.FrameworkServices.SimpleService import SimpleService
 
-import ctypes
 syscall = ctypes.CDLL('libc.so.6').syscall
 
 # default module values (can be overridden per job in `config`)
@@ -107,7 +108,7 @@ class Service(SimpleService):
 
     def check(self):
         if self.__gettid() is None:
-            self.error("Cannot get thread ID. Stats would be completely broken.")
+            self.error('Cannot get thread ID. Stats would be completely broken.')
             return False
 
         for path in sorted(glob.glob(self.sys_dir + '/cpu*/cpuidle/state*/name')):
@@ -140,9 +141,8 @@ class Service(SimpleService):
         # Sort order by kernel-specified CPU index
         self.order.sort(key=lambda x: int(x.split('_')[0][3:]))
 
-        if len(self.definitions) == 0:
+        if not self.definitions:
             self.error("couldn't find cstate stats")
             return False
 
         return True
-
diff --git a/collectors/python.d.plugin/cpuidle/cpuidle.conf b/collectors/python.d.plugin/cpuidle/cpuidle.conf
new file mode 100644
index 000000000..bc276fcd2
--- /dev/null
+++ b/collectors/python.d.plugin/cpuidle/cpuidle.conf
@@ -0,0 +1,40 @@
+# netdata python.d.plugin configuration for cpuidle
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
diff --git a/collectors/python.d.plugin/dns_query_time/Makefile.inc b/collectors/python.d.plugin/dns_query_time/Makefile.inc
new file mode 100644
index 000000000..7eca3e0b6
--- /dev/null
+++ b/collectors/python.d.plugin/dns_query_time/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += dns_query_time/dns_query_time.chart.py
+dist_pythonconfig_DATA += dns_query_time/dns_query_time.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += dns_query_time/README.md dns_query_time/Makefile.inc
+
diff --git a/collectors/python.d.plugin/dns_query_time/README.md b/collectors/python.d.plugin/dns_query_time/README.md
new file mode 100644
index 000000000..3703e8aaf
--- /dev/null
+++ b/collectors/python.d.plugin/dns_query_time/README.md
@@ -0,0 +1,10 @@
+# dns_query_time
+
+This module provides DNS query time statistics.
+
+**Requirement:**
+* `python-dnspython` package
+
+It produces one aggregate chart or one chart per DNS server, showing the query time.
+
+---
diff --git a/python.d/dns_query_time.chart.py b/collectors/python.d.plugin/dns_query_time/dns_query_time.chart.py
index 9a794a9c9..d3c3db788 100644
--- a/python.d/dns_query_time.chart.py
+++ b/collectors/python.d.plugin/dns_query_time/dns_query_time.chart.py
@@ -1,20 +1,25 @@
 # -*- coding: utf-8 -*-
 # Description: dns_query_time netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from random import choice
-from threading import Thread
 from socket import getaddrinfo, gaierror
+from threading import Thread
 
 try:
     from time import monotonic as time
 except ImportError:
     from time import time
+
 try:
-    import dns.message, dns.query, dns.name
+    import dns.message
+    import dns.query
+    import dns.name
     DNS_PYTHON = True
 except ImportError:
     DNS_PYTHON = False
+
 try:
     from queue import Queue
 except ImportError:
@@ -117,8 +122,12 @@ def check_ns(ns):
 def create_charts(aggregate, server_list):
     if aggregate:
         order = ['dns_group']
-        definitions = {'dns_group': {'options': [None, 'DNS Response Time', 'ms', 'name servers',
-                                                 'dns_query_time.response_time', 'line'], 'lines': []}}
+        definitions = {
+            'dns_group': {
+                'options': [None, 'DNS Response Time', 'ms', 'name servers', 'dns_query_time.response_time', 'line'],
+                'lines': []
+            }
+        }
         for ns in server_list:
             definitions['dns_group']['lines'].append(['_'.join(['ns', ns.replace('.', '_')]), ns, 'absolute'])
 
@@ -127,8 +136,10 @@ def create_charts(aggregate, server_list):
         order = [''.join(['dns_', ns.replace('.', '_')]) for ns in server_list]
         definitions = dict()
         for ns in server_list:
-            definitions[''.join(['dns_', ns.replace('.', '_')])] = {'options': [None, 'DNS Response Time', 'ms', ns,
-                                                                                'dns_query_time.response_time', 'area'],
-                                                                    'lines': [['_'.join(['ns', ns.replace('.', '_')]),
-                                                                               ns, 'absolute']]}
+            definitions[''.join(['dns_', ns.replace('.', '_')])] = {
+                'options': [None, 'DNS Response Time', 'ms', ns, 'dns_query_time.response_time', 'area'],
+                'lines': [
+                    ['_'.join(['ns', ns.replace('.', '_')]), ns, 'absolute']
+                ]
+            }
         return order, definitions
diff --git a/conf.d/python.d/dns_query_time.conf b/collectors/python.d.plugin/dns_query_time/dns_query_time.conf
index d32c6db83..d32c6db83 100644
--- a/conf.d/python.d/dns_query_time.conf
+++ b/collectors/python.d.plugin/dns_query_time/dns_query_time.conf
diff --git a/collectors/python.d.plugin/dnsdist/Makefile.inc b/collectors/python.d.plugin/dnsdist/Makefile.inc
new file mode 100644
index 000000000..a53f518f0
--- /dev/null
+++ b/collectors/python.d.plugin/dnsdist/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += dnsdist/dnsdist.chart.py
+dist_pythonconfig_DATA += dnsdist/dnsdist.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += dnsdist/README.md dnsdist/Makefile.inc
+
diff --git a/collectors/python.d.plugin/dnsdist/README.md b/collectors/python.d.plugin/dnsdist/README.md
new file mode 100644
index 000000000..b646ae27c
--- /dev/null
+++ b/collectors/python.d.plugin/dnsdist/README.md
@@ -0,0 +1,54 @@
+# dnsdist
+
+Module monitor dnsdist performance and health metrics.
+
+Following charts are drawn:
+
+1. **Response latency**
+ * latency-slow
+ * latency100-1000
+ * latency50-100
+ * latency10-50
+ * latency1-10
+ * latency0-1
+
+2. **Cache performance**
+ * cache-hits
+ * cache-misses
+
+3. **ACL events**
+ * acl-drops
+ * rule-drop
+ * rule-nxdomain
+ * rule-refused
+
+4. **Noncompliant data**
+ * empty-queries
+ * no-policy
+ * noncompliant-queries
+ * noncompliant-responses
+
+5. **Queries**
+ * queries
+ * rdqueries
+ * rdqueries
+
+6. **Health**
+ * downstream-send-errors
+ * downstream-timeouts
+ * servfail-responses
+ * trunc-failures
+
+### configuration
+
+```yaml
+localhost:
+  name : 'local'
+  url  : 'http://127.0.0.1:5053/jsonstat?command=stats'
+  user : 'username'
+  pass : 'password'
+  header:
+    X-API-Key: 'dnsdist-api-key'
+```
+
+---
diff --git a/collectors/python.d.plugin/dnsdist/dnsdist.chart.py b/collectors/python.d.plugin/dnsdist/dnsdist.chart.py
new file mode 100644
index 000000000..1aff3f803
--- /dev/null
+++ b/collectors/python.d.plugin/dnsdist/dnsdist.chart.py
@@ -0,0 +1,133 @@
+# -*- coding: utf-8 -*-
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from json import loads
+
+from bases.FrameworkServices.UrlService import UrlService
+
+
+ORDER = [
+    'queries',
+    'queries_dropped',
+    'packets_dropped',
+    'answers',
+    'backend_responses',
+    'backend_commerrors',
+    'backend_errors',
+    'cache',
+    'servercpu',
+    'servermem',
+    'query_latency',
+    'query_latency_avg'
+]
+
+
+CHARTS = {
+    'queries': {
+        'options': [None, 'Client queries received', 'queries/s', 'queries', 'dnsdist.queries', 'line'],
+        'lines': [
+            ['queries', 'all', 'incremental'],
+            ['rdqueries', 'recursive', 'incremental'],
+            ['empty-queries', 'empty', 'incremental']
+        ]
+    },
+    'queries_dropped': {
+        'options': [None, 'Client queries dropped', 'queries/s', 'queries', 'dnsdist.queries_dropped', 'line'],
+        'lines': [
+            ['rule-drop', 'rule drop', 'incremental'],
+            ['dyn-blocked', 'dynamic block', 'incremental'],
+            ['no-policy', 'no policy', 'incremental'],
+            ['noncompliant-queries', 'non compliant', 'incremental']
+        ]
+    },
+    'packets_dropped': {
+        'options': [None, 'Packets dropped', 'packets/s', 'packets', 'dnsdist.packets_dropped', 'line'],
+        'lines': [
+            ['acl-drops', 'acl', 'incremental']
+        ]
+    },
+    'answers': {
+        'options': [None, 'Answers statistics', 'answers/s', 'answers', 'dnsdist.answers', 'line'],
+        'lines': [
+            ['self-answered', 'self answered', 'incremental'],
+            ['rule-nxdomain', 'nxdomain', 'incremental', -1],
+            ['rule-refused', 'refused', 'incremental', -1],
+            ['trunc-failures', 'trunc failures', 'incremental', -1]
+        ]
+    },
+    'backend_responses': {
+        'options': [None, 'Backend responses', 'responses/s', 'backends', 'dnsdist.backend_responses', 'line'],
+        'lines': [
+            ['responses', 'responses', 'incremental']
+        ]
+    },
+    'backend_commerrors': {
+        'options': [None, 'Backend Communication Errors', 'errors/s', 'backends', 'dnsdist.backend_commerrors', 'line'],
+        'lines': [
+            ['downstream-send-errors', 'send errors', 'incremental']
+        ]
+    },
+    'backend_errors': {
+        'options': [None, 'Backend error responses', 'responses/s', 'backends', 'dnsdist.backend_errors', 'line'],
+        'lines': [
+            ['downstream-timeouts', 'timeout', 'incremental'],
+            ['servfail-responses', 'servfail', 'incremental'],
+            ['noncompliant-responses', 'non compliant', 'incremental']
+        ]
+    },
+    'cache': {
+        'options': [None, 'Cache performance', 'answers/s', 'cache', 'dnsdist.cache', 'area'],
+        'lines': [
+            ['cache-hits', 'hits', 'incremental'],
+            ['cache-misses', 'misses', 'incremental', -1]
+        ]
+    },
+    'servercpu': {
+        'options': [None, 'DNSDIST server CPU utilization', 'ms/s', 'server', 'dnsdist.servercpu', 'stacked'],
+        'lines': [
+            ['cpu-sys-msec', 'system state', 'incremental'],
+            ['cpu-user-msec', 'user state', 'incremental']
+        ]
+    },
+    'servermem': {
+        'options': [None, 'DNSDIST server memory utilization', 'MB', 'server', 'dnsdist.servermem', 'area'],
+        'lines': [
+            ['real-memory-usage', 'memory usage', 'absolute', 1, 1048576]
+        ]
+    },
+    'query_latency': {
+        'options': [None, 'Query latency', 'queries/s', 'latency', 'dnsdist.query_latency', 'stacked'],
+        'lines': [
+            ['latency0-1', '1ms', 'incremental'],
+            ['latency1-10', '10ms', 'incremental'],
+            ['latency10-50', '50ms', 'incremental'],
+            ['latency50-100', '100ms', 'incremental'],
+            ['latency100-1000', '1sec', 'incremental'],
+            ['latency-slow', 'slow', 'incremental']
+        ]
+    },
+    'query_latency_avg': {
+        'options': [None, 'Average latency for the last N queries', 'ms/query', 'latency',
+                    'dnsdist.query_latency_avg', 'line'],
+        'lines': [
+            ['latency-avg100', '100', 'absolute'],
+            ['latency-avg1000', '1k', 'absolute'],
+            ['latency-avg10000', '10k', 'absolute'],
+            ['latency-avg1000000', '1000k', 'absolute']
+        ]
+    }
+}
+
+
+class Service(UrlService):
+    def __init__(self, configuration=None, name=None):
+        UrlService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+
+    def _get_data(self):
+        data = self._get_raw_data()
+        if not data:
+            return None
+
+        return loads(data)
diff --git a/conf.d/python.d/dnsdist.conf b/collectors/python.d.plugin/dnsdist/dnsdist.conf
index aec58b8e1..aec58b8e1 100644
--- a/conf.d/python.d/dnsdist.conf
+++ b/collectors/python.d.plugin/dnsdist/dnsdist.conf
diff --git a/collectors/python.d.plugin/dockerd/Makefile.inc b/collectors/python.d.plugin/dockerd/Makefile.inc
new file mode 100644
index 000000000..b100bc6a1
--- /dev/null
+++ b/collectors/python.d.plugin/dockerd/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += dockerd/dockerd.chart.py
+dist_pythonconfig_DATA += dockerd/dockerd.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += dockerd/README.md dockerd/Makefile.inc
+
diff --git a/collectors/python.d.plugin/dockerd/README.md b/collectors/python.d.plugin/dockerd/README.md
new file mode 100644
index 000000000..d3f603808
--- /dev/null
+++ b/collectors/python.d.plugin/dockerd/README.md
@@ -0,0 +1,26 @@
+# dockerd
+
+Module monitor docker health metrics.
+
+**Requirement:**
+* `docker` package
+
+Following charts are drawn:
+
+1. **running containers**
+ * count
+
+2. **healthy containers**
+ * count
+
+3. **unhealthy containers**
+ * count
+
+### configuration
+
+```yaml
+ update_every : 1
+ priority     : 60000
+ ```
+
+---
diff --git a/collectors/python.d.plugin/dockerd/dockerd.chart.py b/collectors/python.d.plugin/dockerd/dockerd.chart.py
new file mode 100644
index 000000000..a0d3d7e65
--- /dev/null
+++ b/collectors/python.d.plugin/dockerd/dockerd.chart.py
@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*-
+# Description: docker netdata python.d module
+# Author: Kévin Darcel (@tuxity)
+
+try:
+    import docker
+    HAS_DOCKER = True
+except ImportError:
+    HAS_DOCKER = False
+
+from bases.FrameworkServices.SimpleService import SimpleService
+
+# default module values (can be overridden per job in `config`)
+# update_every = 1
+priority = 60000
+retries = 60
+
+# charts order (can be overridden if you want less charts, or different order)
+ORDER = [
+    'running_containers',
+    'healthy_containers',
+    'unhealthy_containers'
+]
+
+CHARTS = {
+    'running_containers': {
+        'options': [None, 'Number of running containers', 'running containers', 'running containers',
+                    'docker.running_containers', 'line'],
+        'lines': [
+            ['running_containers', 'running']
+        ]
+    },
+    'healthy_containers': {
+        'options': [None, 'Number of healthy containers', 'healthy containers', 'healthy containers',
+                    'docker.healthy_containers', 'line'],
+        'lines': [
+            ['healthy_containers', 'healthy']
+        ]
+    },
+    'unhealthy_containers': {
+        'options': [None, 'Number of unhealthy containers', 'unhealthy containers', 'unhealthy containers',
+                    'docker.unhealthy_containers', 'line'],
+        'lines': [
+            ['unhealthy_containers', 'unhealthy']
+        ]
+    }
+}
+
+
+class Service(SimpleService):
+    def __init__(self, configuration=None, name=None):
+        SimpleService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+
+    def check(self):
+        if not HAS_DOCKER:
+            self.error('\'docker\' package is needed to use docker.chart.py')
+            return False
+
+        self.client = docker.DockerClient(base_url=self.configuration.get('url', 'unix://var/run/docker.sock'))
+
+        try:
+            self.client.ping()
+        except docker.errors.APIError as error:
+            self.error(error)
+            return False
+
+        return True
+
+    def get_data(self):
+        data = dict()
+        data['running_containers'] = len(self.client.containers.list(sparse=True))
+        data['healthy_containers'] = len(self.client.containers.list(filters={'health': 'healthy'}, sparse=True))
+        data['unhealthy_containers'] = len(self.client.containers.list(filters={'health': 'unhealthy'}, sparse=True))
+
+        return data or None
diff --git a/collectors/python.d.plugin/dockerd/dockerd.conf b/collectors/python.d.plugin/dockerd/dockerd.conf
new file mode 100644
index 000000000..5ef17a1f5
--- /dev/null
+++ b/collectors/python.d.plugin/dockerd/dockerd.conf
@@ -0,0 +1,79 @@
+# netdata python.d.plugin configuration for dockerd health data API
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 10             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# Additionally to the above, dockerd plugin also supports the following:
+#
+#     url: '<scheme>://<host>:<port>/<health_page_api>'
+#     # http://localhost:8080/health
+#
+# if the URL is password protected, the following are supported:
+#
+#     user: 'username'
+#     pass: 'password'
+#
+# ----------------------------------------------------------------------
+# AUTO-DETECTION JOBS
+# only one of them will run (they have the same name)
+#
+local:
+    url: 'unix://var/run/docker.sock'
diff --git a/collectors/python.d.plugin/dovecot/Makefile.inc b/collectors/python.d.plugin/dovecot/Makefile.inc
new file mode 100644
index 000000000..fd7d13bbb
--- /dev/null
+++ b/collectors/python.d.plugin/dovecot/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += dovecot/dovecot.chart.py
+dist_pythonconfig_DATA += dovecot/dovecot.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += dovecot/README.md dovecot/Makefile.inc
+
diff --git a/collectors/python.d.plugin/dovecot/README.md b/collectors/python.d.plugin/dovecot/README.md
new file mode 100644
index 000000000..50950ecc1
--- /dev/null
+++ b/collectors/python.d.plugin/dovecot/README.md
@@ -0,0 +1,73 @@
+# dovecot
+
+This module provides statistics information from Dovecot server.
+Statistics are taken from dovecot socket by executing `EXPORT global` command.
+More information about dovecot stats can be found on [project wiki page.](http://wiki2.dovecot.org/Statistics)
+
+**Requirement:**
+Dovecot UNIX socket with R/W permissions for user netdata or Dovecot with configured TCP/IP socket.
+
+Module gives information with following charts:
+
+1. **sessions**
+ * active sessions
+
+2. **logins**
+ * logins
+
+3. **commands** - number of IMAP commands
+ * commands
+
+4. **Faults**
+ * minor
+ * major
+
+5. **Context Switches**
+ * volountary
+ * involountary
+
+6. **disk** in bytes/s
+ * read
+ * write
+
+7. **bytes** in bytes/s
+ * read
+ * write
+
+8. **number of syscalls** in syscalls/s
+ * read
+ * write
+
+9. **lookups** - number of lookups per second
+ * path
+ * attr
+
+10. **hits** - number of cache hits
+ * hits
+
+11. **attempts** - authorization attempts
+ * success
+ * failure
+
+12. **cache** - cached authorization hits
+ * hit
+ * miss
+
+### configuration
+
+Sample:
+
+```yaml
+localtcpip:
+  name     : 'local'
+  host     : '127.0.0.1'
+  port     : 24242
+
+localsocket:
+  name     : 'local'
+  socket   : '/var/run/dovecot/stats'
+```
+
+If no configuration is given, module will attempt to connect to dovecot using unix socket localized in `/var/run/dovecot/stats`
+
+---
diff --git a/python.d/dovecot.chart.py b/collectors/python.d.plugin/dovecot/dovecot.chart.py
index 5689f2ec9..7fee3bfac 100644
--- a/python.d/dovecot.chart.py
+++ b/collectors/python.d.plugin/dovecot/dovecot.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: dovecot netdata python.d module
 # Author: Pawel Krupa (paulfantom)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.FrameworkServices.SocketService import SocketService
 
@@ -10,93 +11,113 @@ priority = 60000
 retries = 60
 
 # charts order (can be overridden if you want less charts, or different order)
-ORDER = ['sessions', 'logins', 'commands',
-         'faults',
-         'context_switches',
-         'io', 'net', 'syscalls',
-         'lookup', 'cache',
-         'auth', 'auth_cache']
+ORDER = [
+    'sessions',
+    'logins',
+    'commands',
+    'faults',
+    'context_switches',
+    'io',
+    'net',
+    'syscalls',
+    'lookup',
+    'cache',
+    'auth',
+    'auth_cache'
+]
 
 CHARTS = {
     'sessions': {
-        'options': [None, "Dovecot Active Sessions", 'number', 'sessions', 'dovecot.sessions', 'line'],
+        'options': [None, 'Dovecot Active Sessions', 'number', 'sessions', 'dovecot.sessions', 'line'],
         'lines': [
             ['num_connected_sessions', 'active sessions', 'absolute']
-        ]},
+        ]
+    },
     'logins': {
-        'options': [None, "Dovecot Logins", 'number', 'logins', 'dovecot.logins', 'line'],
+        'options': [None, 'Dovecot Logins', 'number', 'logins', 'dovecot.logins', 'line'],
         'lines': [
             ['num_logins', 'logins', 'absolute']
-        ]},
+        ]
+    },
     'commands': {
-        'options': [None, "Dovecot Commands", "commands", 'commands', 'dovecot.commands', 'line'],
+        'options': [None, 'Dovecot Commands', 'commands', 'commands', 'dovecot.commands', 'line'],
         'lines': [
             ['num_cmds', 'commands', 'absolute']
-        ]},
+        ]
+    },
     'faults': {
-        'options': [None, "Dovecot Page Faults", "faults", 'page faults', 'dovecot.faults', 'line'],
+        'options': [None, 'Dovecot Page Faults', 'faults', 'page faults', 'dovecot.faults', 'line'],
         'lines': [
             ['min_faults', 'minor', 'absolute'],
             ['maj_faults', 'major', 'absolute']
-        ]},
+        ]
+    },
     'context_switches': {
-        'options': [None, "Dovecot Context Switches", '', 'context switches', 'dovecot.context_switches', 'line'],
+        'options': [None, 'Dovecot Context Switches', '', 'context switches', 'dovecot.context_switches', 'line'],
         'lines': [
             ['vol_cs', 'voluntary', 'absolute'],
             ['invol_cs', 'involuntary', 'absolute']
-        ]},
+        ]
+    },
     'io': {
-        'options': [None, "Dovecot Disk I/O", 'kilobytes/s', 'disk', 'dovecot.io', 'area'],
+        'options': [None, 'Dovecot Disk I/O', 'kilobytes/s', 'disk', 'dovecot.io', 'area'],
         'lines': [
             ['disk_input', 'read', 'incremental', 1, 1024],
             ['disk_output', 'write', 'incremental', -1, 1024]
-        ]},
+        ]
+    },
     'net': {
-        'options': [None, "Dovecot Network Bandwidth", 'kilobits/s', 'network', 'dovecot.net', 'area'],
+        'options': [None, 'Dovecot Network Bandwidth', 'kilobits/s', 'network', 'dovecot.net', 'area'],
         'lines': [
             ['read_bytes', 'read', 'incremental', 8, 1024],
             ['write_bytes', 'write', 'incremental', -8, 1024]
-        ]},
+        ]
+    },
     'syscalls': {
-        'options': [None, "Dovecot Number of SysCalls", 'syscalls/s', 'system', 'dovecot.syscalls', 'line'],
+        'options': [None, 'Dovecot Number of SysCalls', 'syscalls/s', 'system', 'dovecot.syscalls', 'line'],
         'lines': [
             ['read_count', 'read', 'incremental'],
             ['write_count', 'write', 'incremental']
-        ]},
+        ]
+    },
     'lookup': {
-        'options': [None, "Dovecot Lookups", 'number/s', 'lookups', 'dovecot.lookup', 'stacked'],
+        'options': [None, 'Dovecot Lookups', 'number/s', 'lookups', 'dovecot.lookup', 'stacked'],
         'lines': [
             ['mail_lookup_path', 'path', 'incremental'],
             ['mail_lookup_attr', 'attr', 'incremental']
-        ]},
+        ]
+    },
     'cache': {
-        'options': [None, "Dovecot Cache Hits", 'hits/s', 'cache', 'dovecot.cache', 'line'],
+        'options': [None, 'Dovecot Cache Hits', 'hits/s', 'cache', 'dovecot.cache', 'line'],
         'lines': [
             ['mail_cache_hits', 'hits', 'incremental']
-        ]},
+        ]
+    },
     'auth': {
-        'options': [None, "Dovecot Authentications", 'attempts', 'logins', 'dovecot.auth', 'stacked'],
+        'options': [None, 'Dovecot Authentications', 'attempts', 'logins', 'dovecot.auth', 'stacked'],
         'lines': [
             ['auth_successes', 'ok', 'absolute'],
             ['auth_failures', 'failed', 'absolute']
-        ]},
+        ]
+    },
     'auth_cache': {
-        'options': [None, "Dovecot Authentication Cache", 'number', 'cache', 'dovecot.auth_cache', 'stacked'],
+        'options': [None, 'Dovecot Authentication Cache', 'number', 'cache', 'dovecot.auth_cache', 'stacked'],
         'lines': [
             ['auth_cache_hits', 'hit', 'absolute'],
             ['auth_cache_misses', 'miss', 'absolute']
-        ]}
+        ]
+    }
 }
 
 
 class Service(SocketService):
     def __init__(self, configuration=None, name=None):
         SocketService.__init__(self, configuration=configuration, name=name)
-        self.request = "EXPORT\tglobal\r\n"
+        self.request = 'EXPORT\tglobal\r\n'
         self.host = None  # localhost
         self.port = None  # 24242
         # self._keep_alive = True
-        self.unix_socket = "/var/run/dovecot/stats"
+        self.unix_socket = '/var/run/dovecot/stats'
         self.order = ORDER
         self.definitions = CHARTS
 
@@ -111,7 +132,7 @@ class Service(SocketService):
             return None
 
         if raw is None:
-            self.debug("dovecot returned no data")
+            self.debug('dovecot returned no data')
             return None
 
         data = raw.split('\n')[:2]
diff --git a/conf.d/python.d/dovecot.conf b/collectors/python.d.plugin/dovecot/dovecot.conf
index 56c394991..56c394991 100644
--- a/conf.d/python.d/dovecot.conf
+++ b/collectors/python.d.plugin/dovecot/dovecot.conf
diff --git a/collectors/python.d.plugin/elasticsearch/Makefile.inc b/collectors/python.d.plugin/elasticsearch/Makefile.inc
new file mode 100644
index 000000000..15c63c2fa
--- /dev/null
+++ b/collectors/python.d.plugin/elasticsearch/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += elasticsearch/elasticsearch.chart.py
+dist_pythonconfig_DATA += elasticsearch/elasticsearch.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += elasticsearch/README.md elasticsearch/Makefile.inc
+
diff --git a/collectors/python.d.plugin/elasticsearch/README.md b/collectors/python.d.plugin/elasticsearch/README.md
new file mode 100644
index 000000000..75e17015b
--- /dev/null
+++ b/collectors/python.d.plugin/elasticsearch/README.md
@@ -0,0 +1,60 @@
+# elasticsearch
+
+This module monitors Elasticsearch performance and health metrics.
+
+It produces:
+
+1. **Search performance** charts:
+ * Number of queries, fetches
+ * Time spent on queries, fetches
+ * Query and fetch latency
+
+2. **Indexing performance** charts:
+ * Number of documents indexed, index refreshes, flushes
+ * Time spent on indexing, refreshing, flushing
+ * Indexing and flushing latency
+
+3. **Memory usage and garbace collection** charts:
+ * JVM heap currently in use, committed
+ * Count of garbage collections
+ * Time spent on garbage collections
+
+4. **Host metrics** charts:
+ * Available file descriptors in percent
+ * Opened HTTP connections
+ * Cluster communication transport metrics
+
+5. **Queues and rejections** charts:
+ * Number of queued/rejected threads in thread pool
+
+6. **Fielddata cache** charts:
+ * Fielddata cache size
+ * Fielddata evictions and circuit breaker tripped count
+
+7. **Cluster health API** charts:
+ * Cluster status
+ * Nodes and tasks statistics
+ * Shards statistics
+
+8. **Cluster stats API** charts:
+ * Nodes statistics
+ * Query cache statistics
+ * Docs statistics
+ * Store statistics
+ * Indices and shards statistics
+
+### configuration
+
+Sample:
+
+```yaml
+local:
+  host               :  'ipaddress'   # Server ip address or hostname
+  port               : 'password'     # Port on which elasticsearch listed
+  cluster_health     :  True/False    # Calls to cluster health elasticsearch API. Enabled by default.
+  cluster_stats      :  True/False    # Calls to cluster stats elasticsearch API. Enabled by default.
+```
+
+If no configuration is given, module will fail to run.
+
+---
diff --git a/python.d/elasticsearch.chart.py b/collectors/python.d.plugin/elasticsearch/elasticsearch.chart.py
index 9c2c58944..3f431f6e0 100644
--- a/python.d/elasticsearch.chart.py
+++ b/collectors/python.d.plugin/elasticsearch/elasticsearch.chart.py
@@ -1,11 +1,14 @@
 # -*- coding: utf-8 -*-
 # Description: elastic search node stats netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import json
+import threading
 
 from collections import namedtuple
-from json import loads
 from socket import gethostbyname, gaierror
-from threading import Thread
+
 try:
         from queue import Queue
 except ImportError:
@@ -15,8 +18,6 @@ from bases.FrameworkServices.UrlService import UrlService
 
 # default module values (can be overridden per job in `config`)
 update_every = 5
-priority = 60000
-retries = 60
 
 METHODS = namedtuple('METHODS', ['get_data', 'url', 'run'])
 
@@ -63,6 +64,8 @@ NODE_STATS = [
     'jvm.buffer_pools.mapped.total_capacity_in_bytes',
     'thread_pool.bulk.queue',
     'thread_pool.bulk.rejected',
+    'thread_pool.write.queue',
+    'thread_pool.write.rejected',
     'thread_pool.index.queue',
     'thread_pool.index.rejected',
     'thread_pool.search.queue',
@@ -107,30 +110,62 @@ HEALTH_STATS = [
 ]
 
 LATENCY = {
-    'query_latency':
-        {'total': 'indices_search_query_total',
-         'spent_time': 'indices_search_query_time_in_millis'},
-    'fetch_latency':
-        {'total': 'indices_search_fetch_total',
-         'spent_time': 'indices_search_fetch_time_in_millis'},
-    'indexing_latency':
-        {'total': 'indices_indexing_index_total',
-         'spent_time': 'indices_indexing_index_time_in_millis'},
-    'flushing_latency':
-        {'total': 'indices_flush_total',
-         'spent_time': 'indices_flush_total_time_in_millis'}
+    'query_latency': {
+        'total': 'indices_search_query_total',
+        'spent_time': 'indices_search_query_time_in_millis'
+    },
+    'fetch_latency': {
+        'total': 'indices_search_fetch_total',
+        'spent_time': 'indices_search_fetch_time_in_millis'
+    },
+    'indexing_latency': {
+        'total': 'indices_indexing_index_total',
+        'spent_time': 'indices_indexing_index_time_in_millis'
+    },
+    'flushing_latency': {
+        'total': 'indices_flush_total',
+        'spent_time': 'indices_flush_total_time_in_millis'
+    }
 }
 
 # charts order (can be overridden if you want less charts, or different order)
-ORDER = ['search_performance_total', 'search_performance_current', 'search_performance_time',
-         'search_latency', 'index_performance_total', 'index_performance_current', 'index_performance_time',
-         'index_latency', 'index_translog_operations', 'index_translog_size', 'index_segments_count', 'index_segments_memory_writer',
-         'index_segments_memory', 'jvm_mem_heap', 'jvm_mem_heap_bytes', 'jvm_buffer_pool_count',
-         'jvm_direct_buffers_memory', 'jvm_mapped_buffers_memory', 'jvm_gc_count', 'jvm_gc_time', 'host_metrics_file_descriptors',
-         'host_metrics_http', 'host_metrics_transport', 'thread_pool_queued', 'thread_pool_rejected',
-         'fielddata_cache', 'fielddata_evictions_tripped', 'cluster_health_status', 'cluster_health_nodes',
-         'cluster_health_shards', 'cluster_stats_nodes', 'cluster_stats_query_cache', 'cluster_stats_docs',
-         'cluster_stats_store', 'cluster_stats_indices_shards']
+ORDER = [
+    'search_performance_total',
+    'search_performance_current',
+    'search_performance_time',
+    'search_latency',
+    'index_performance_total',
+    'index_performance_current',
+    'index_performance_time',
+    'index_latency',
+    'index_translog_operations',
+    'index_translog_size',
+    'index_segments_count',
+    'index_segments_memory_writer',
+    'index_segments_memory',
+    'jvm_mem_heap',
+    'jvm_mem_heap_bytes',
+    'jvm_buffer_pool_count',
+    'jvm_direct_buffers_memory',
+    'jvm_mapped_buffers_memory',
+    'jvm_gc_count',
+    'jvm_gc_time',
+    'host_metrics_file_descriptors',
+    'host_metrics_http',
+    'host_metrics_transport',
+    'thread_pool_queued',
+    'thread_pool_rejected',
+    'fielddata_cache',
+    'fielddata_evictions_tripped',
+    'cluster_health_status',
+    'cluster_health_nodes',
+    'cluster_health_shards',
+    'cluster_stats_nodes',
+    'cluster_stats_query_cache',
+    'cluster_stats_docs',
+    'cluster_stats_store',
+    'cluster_stats_indices_shards',
+]
 
 CHARTS = {
     'search_performance_total': {
@@ -139,27 +174,31 @@ CHARTS = {
         'lines': [
             ['indices_search_query_total', 'queries', 'incremental'],
             ['indices_search_fetch_total', 'fetches', 'incremental']
-        ]},
+        ]
+    },
     'search_performance_current': {
         'options': [None, 'Queries and  Fetches In Progress', 'number of', 'search performance',
                     'elastic.search_performance_current', 'stacked'],
         'lines': [
             ['indices_search_query_current', 'queries', 'absolute'],
             ['indices_search_fetch_current', 'fetches', 'absolute']
-        ]},
+        ]
+    },
     'search_performance_time': {
         'options': [None, 'Time Spent On Queries And Fetches', 'seconds', 'search performance',
                     'elastic.search_performance_time', 'stacked'],
         'lines': [
             ['indices_search_query_time_in_millis', 'query', 'incremental', 1, 1000],
             ['indices_search_fetch_time_in_millis', 'fetch', 'incremental', 1, 1000]
-        ]},
+        ]
+    },
     'search_latency': {
         'options': [None, 'Query And Fetch Latency', 'ms', 'search performance', 'elastic.search_latency', 'stacked'],
         'lines': [
             ['query_latency', 'query', 'absolute', 1, 1000],
             ['fetch_latency', 'fetch', 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'index_performance_total': {
         'options': [None, 'Indexed Documents, Index Refreshes, Index Flushes To Disk', 'number of',
                     'indexing performance', 'elastic.index_performance_total', 'stacked'],
@@ -167,13 +206,15 @@ CHARTS = {
             ['indices_indexing_index_total', 'indexed', 'incremental'],
             ['indices_refresh_total', 'refreshes', 'incremental'],
             ['indices_flush_total', 'flushes', 'incremental']
-        ]},
+        ]
+    },
     'index_performance_current': {
         'options': [None, 'Number Of Documents Currently Being Indexed', 'currently indexed',
                     'indexing performance', 'elastic.index_performance_current', 'stacked'],
         'lines': [
             ['indices_indexing_index_current', 'documents', 'absolute']
-        ]},
+        ]
+    },
     'index_performance_time': {
         'options': [None, 'Time Spent On Indexing, Refreshing, Flushing', 'seconds', 'indexing performance',
                     'elastic.index_performance_time', 'stacked'],
@@ -181,40 +222,46 @@ CHARTS = {
             ['indices_indexing_index_time_in_millis', 'indexing', 'incremental', 1, 1000],
             ['indices_refresh_total_time_in_millis', 'refreshing', 'incremental', 1, 1000],
             ['indices_flush_total_time_in_millis', 'flushing', 'incremental', 1, 1000]
-        ]},
+        ]
+    },
     'index_latency': {
         'options': [None, 'Indexing And Flushing Latency', 'ms', 'indexing performance',
                     'elastic.index_latency', 'stacked'],
         'lines': [
             ['indexing_latency', 'indexing', 'absolute', 1, 1000],
             ['flushing_latency', 'flushing', 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'index_translog_operations': {
         'options': [None, 'Translog Operations', 'count', 'translog',
                     'elastic.index_translog_operations', 'area'],
         'lines': [
             ['indices_translog_operations', 'total', 'absolute'],
             ['indices_translog_uncommitted_operations', 'uncommited', 'absolute']
-        ]},
+        ]
+    },
     'index_translog_size': {
         'options': [None, 'Translog Size', 'MB', 'translog',
                     'elastic.index_translog_size', 'area'],
         'lines': [
             ['indices_translog_size_in_bytes', 'total', 'absolute', 1, 1048567],
             ['indices_translog_uncommitted_size_in_bytes', 'uncommited', 'absolute', 1, 1048567]
-        ]},
+        ]
+    },
     'index_segments_count': {
         'options': [None, 'Total Number Of Indices Segments', 'count', 'indices segments',
                     'elastic.index_segments_count', 'line'],
         'lines': [
             ['indices_segments_count', 'segments', 'absolute']
-        ]},
+        ]
+    },
     'index_segments_memory_writer': {
         'options': [None, 'Index Writer Memory Usage', 'MB', 'indices segments',
                     'elastic.index_segments_memory_writer', 'area'],
         'lines': [
             ['indices_segments_index_writer_memory_in_bytes', 'total', 'absolute', 1, 1048567]
-        ]},
+        ]
+    },
     'index_segments_memory': {
         'options': [None, 'Indices Segments Memory Usage', 'MB', 'indices segments',
                     'elastic.index_segments_memory', 'stacked'],
@@ -227,84 +274,98 @@ CHARTS = {
             ['indices_segments_doc_values_memory_in_bytes', 'doc values', 'absolute', 1, 1048567],
             ['indices_segments_version_map_memory_in_bytes', 'version map', 'absolute', 1, 1048567],
             ['indices_segments_fixed_bit_set_memory_in_bytes', 'fixed bit set', 'absolute', 1, 1048567]
-        ]},
+        ]
+    },
     'jvm_mem_heap': {
         'options': [None, 'JVM Heap Percentage Currently in Use', 'percent', 'memory usage and gc',
                     'elastic.jvm_heap', 'area'],
         'lines': [
             ['jvm_mem_heap_used_percent', 'inuse', 'absolute']
-        ]},
+        ]
+    },
     'jvm_mem_heap_bytes': {
         'options': [None, 'JVM Heap Commit And Usage', 'MB', 'memory usage and gc',
                     'elastic.jvm_heap_bytes', 'area'],
         'lines': [
             ['jvm_mem_heap_committed_in_bytes', 'commited', 'absolute', 1, 1048576],
             ['jvm_mem_heap_used_in_bytes', 'used', 'absolute', 1, 1048576]
-        ]},
+        ]
+    },
     'jvm_buffer_pool_count': {
         'options': [None, 'JVM Buffers', 'count', 'memory usage and gc',
                     'elastic.jvm_buffer_pool_count', 'line'],
         'lines': [
             ['jvm_buffer_pools_direct_count', 'direct', 'absolute'],
             ['jvm_buffer_pools_mapped_count', 'mapped', 'absolute']
-        ]},
+        ]
+    },
     'jvm_direct_buffers_memory': {
         'options': [None, 'JVM Direct Buffers Memory', 'MB', 'memory usage and gc',
                     'elastic.jvm_direct_buffers_memory', 'area'],
         'lines': [
             ['jvm_buffer_pools_direct_used_in_bytes', 'used', 'absolute', 1, 1048567],
             ['jvm_buffer_pools_direct_total_capacity_in_bytes', 'total capacity', 'absolute', 1, 1048567]
-        ]},
+        ]
+    },
     'jvm_mapped_buffers_memory': {
         'options': [None, 'JVM Mapped Buffers Memory', 'MB', 'memory usage and gc',
                     'elastic.jvm_mapped_buffers_memory', 'area'],
         'lines': [
             ['jvm_buffer_pools_mapped_used_in_bytes', 'used', 'absolute', 1, 1048567],
             ['jvm_buffer_pools_mapped_total_capacity_in_bytes', 'total capacity', 'absolute', 1, 1048567]
-        ]},
+        ]
+    },
     'jvm_gc_count': {
         'options': [None, 'Garbage Collections', 'counts', 'memory usage and gc', 'elastic.gc_count', 'stacked'],
         'lines': [
             ['jvm_gc_collectors_young_collection_count', 'young', 'incremental'],
             ['jvm_gc_collectors_old_collection_count', 'old', 'incremental']
-        ]},
+        ]
+    },
     'jvm_gc_time': {
         'options': [None, 'Time Spent On Garbage Collections', 'ms', 'memory usage and gc',
                     'elastic.gc_time', 'stacked'],
         'lines': [
             ['jvm_gc_collectors_young_collection_time_in_millis', 'young', 'incremental'],
             ['jvm_gc_collectors_old_collection_time_in_millis', 'old', 'incremental']
-        ]},
+        ]
+    },
     'thread_pool_queued': {
         'options': [None, 'Number Of Queued Threads In Thread Pool', 'queued threads', 'queues and rejections',
                     'elastic.thread_pool_queued', 'stacked'],
         'lines': [
             ['thread_pool_bulk_queue', 'bulk', 'absolute'],
+            ['thread_pool_write_queue', 'write', 'absolute'],
             ['thread_pool_index_queue', 'index', 'absolute'],
             ['thread_pool_search_queue', 'search', 'absolute'],
             ['thread_pool_merge_queue', 'merge', 'absolute']
-        ]},
+        ]
+    },
     'thread_pool_rejected': {
         'options': [None, 'Rejected Threads In Thread Pool', 'rejected threads', 'queues and rejections',
                     'elastic.thread_pool_rejected', 'stacked'],
         'lines': [
             ['thread_pool_bulk_rejected', 'bulk', 'absolute'],
+            ['thread_pool_write_rejected', 'write', 'absolute'],
             ['thread_pool_index_rejected', 'index', 'absolute'],
             ['thread_pool_search_rejected', 'search', 'absolute'],
             ['thread_pool_merge_rejected', 'merge', 'absolute']
-        ]},
+        ]
+    },
     'fielddata_cache': {
         'options': [None, 'Fielddata Cache', 'MB', 'fielddata cache', 'elastic.fielddata_cache', 'line'],
         'lines': [
             ['indices_fielddata_memory_size_in_bytes', 'cache', 'absolute', 1, 1048576]
-        ]},
+        ]
+    },
     'fielddata_evictions_tripped': {
         'options': [None, 'Fielddata Evictions And Circuit Breaker Tripped Count', 'number of events',
                     'fielddata cache', 'elastic.fielddata_evictions_tripped', 'line'],
         'lines': [
             ['indices_fielddata_evictions', 'evictions', 'incremental'],
             ['indices_fielddata_tripped', 'tripped', 'incremental']
-        ]},
+        ]
+    },
     'cluster_health_nodes': {
         'options': [None, 'Nodes And Tasks Statistics', 'units', 'cluster health API',
                     'elastic.cluster_health_nodes', 'stacked'],
@@ -313,7 +374,8 @@ CHARTS = {
             ['number_of_data_nodes', 'data_nodes', 'absolute'],
             ['number_of_pending_tasks', 'pending_tasks', 'absolute'],
             ['number_of_in_flight_fetch', 'in_flight_fetch', 'absolute']
-        ]},
+        ]
+    },
     'cluster_health_status': {
         'options': [None, 'Cluster Status', 'status', 'cluster health API',
                     'elastic.cluster_health_status', 'area'],
@@ -324,7 +386,8 @@ CHARTS = {
             ['status_foo2', None, 'absolute'],
             ['status_foo3', None, 'absolute'],
             ['status_yellow', 'yellow', 'absolute']
-        ]},
+        ]
+    },
     'cluster_health_shards': {
         'options': [None, 'Shards Statistics', 'shards', 'cluster health API',
                     'elastic.cluster_health_shards', 'stacked'],
@@ -335,7 +398,8 @@ CHARTS = {
             ['delayed_unassigned_shards', 'delayed_unassigned', 'absolute'],
             ['initializing_shards', 'initializing', 'absolute'],
             ['active_shards_percent_as_number', 'active_percent', 'absolute']
-        ]},
+        ]
+    },
     'cluster_stats_nodes': {
         'options': [None, 'Nodes Statistics', 'nodes', 'cluster stats API',
                     'elastic.cluster_nodes', 'stacked'],
@@ -345,52 +409,60 @@ CHARTS = {
             ['nodes_count_total', 'total', 'absolute'],
             ['nodes_count_master_only', 'master_only', 'absolute'],
             ['nodes_count_client', 'client', 'absolute']
-        ]},
+        ]
+    },
     'cluster_stats_query_cache': {
         'options': [None, 'Query Cache Statistics', 'queries', 'cluster stats API',
                     'elastic.cluster_query_cache', 'stacked'],
         'lines': [
             ['indices_query_cache_hit_count', 'hit', 'incremental'],
             ['indices_query_cache_miss_count', 'miss', 'incremental']
-        ]},
+        ]
+    },
     'cluster_stats_docs': {
         'options': [None, 'Docs Statistics', 'count', 'cluster stats API',
                     'elastic.cluster_docs', 'line'],
         'lines': [
             ['indices_docs_count', 'docs', 'absolute']
-        ]},
+        ]
+    },
     'cluster_stats_store': {
         'options': [None, 'Store Statistics', 'MB', 'cluster stats API',
                     'elastic.cluster_store', 'line'],
         'lines': [
             ['indices_store_size_in_bytes', 'size', 'absolute', 1, 1048567]
-        ]},
+        ]
+    },
     'cluster_stats_indices_shards': {
         'options': [None, 'Indices And Shards Statistics', 'count', 'cluster stats API',
                     'elastic.cluster_indices_shards', 'stacked'],
         'lines': [
             ['indices_count', 'indices', 'absolute'],
             ['indices_shards_total', 'shards', 'absolute']
-        ]},
+        ]
+    },
     'host_metrics_transport': {
         'options': [None, 'Cluster Communication Transport Metrics', 'kilobit/s', 'host metrics',
                     'elastic.host_transport', 'area'],
         'lines': [
             ['transport_rx_size_in_bytes', 'in', 'incremental', 8, 1000],
             ['transport_tx_size_in_bytes', 'out', 'incremental', -8, 1000]
-        ]},
+        ]
+    },
     'host_metrics_file_descriptors': {
         'options': [None, 'Available File Descriptors In Percent', 'percent', 'host metrics',
                     'elastic.host_descriptors', 'area'],
         'lines': [
             ['file_descriptors_used', 'used', 'absolute', 1, 10]
-        ]},
+        ]
+    },
     'host_metrics_http': {
         'options': [None, 'Opened HTTP Connections', 'connections', 'host metrics',
                     'elastic.host_http_connections', 'line'],
         'lines': [
             ['http_current_open', 'opened', 'absolute', 1, 1]
-        ]}
+        ]
+    }
 }
 
 
@@ -444,8 +516,8 @@ class Service(UrlService):
         for method in self.methods:
             if not method.run:
                 continue
-            th = Thread(target=method.get_data,
-                        args=(queue, method.url))
+            th = threading.Thread(target=method.get_data,
+                                  args=(queue, method.url))
             th.start()
             threads.append(th)
 
@@ -466,7 +538,11 @@ class Service(UrlService):
         if not raw_data:
             return queue.put(dict())
 
-        data = loads(raw_data)
+        data = self.json_reply(raw_data)
+
+        if not data:
+            return queue.put(dict())
+
         to_netdata = fetch_data_(raw_data=data,
                                  metrics=HEALTH_STATS)
 
@@ -488,7 +564,11 @@ class Service(UrlService):
         if not raw_data:
             return queue.put(dict())
 
-        data = loads(raw_data)
+        data = self.json_reply(raw_data)
+
+        if not data:
+            return queue.put(dict())
+
         to_netdata = fetch_data_(raw_data=data,
                                  metrics=CLUSTER_STATS)
 
@@ -505,7 +585,10 @@ class Service(UrlService):
         if not raw_data:
             return queue.put(dict())
 
-        data = loads(raw_data)
+        data = self.json_reply(raw_data)
+
+        if not data:
+            return queue.put(dict())
 
         node = list(data['nodes'].keys())[0]
         to_netdata = fetch_data_(raw_data=data['nodes'][node],
@@ -525,6 +608,13 @@ class Service(UrlService):
 
         return queue.put(to_netdata)
 
+    def json_reply(self, reply):
+        try:
+            return json.loads(reply)
+        except ValueError as err:
+            self.error(err)
+            return None
+
     def find_avg(self, total, spent_time, key):
         if key not in self.latency:
             self.latency[key] = dict(total=total,
diff --git a/conf.d/python.d/elasticsearch.conf b/collectors/python.d.plugin/elasticsearch/elasticsearch.conf
index 213843bf9..213843bf9 100644
--- a/conf.d/python.d/elasticsearch.conf
+++ b/collectors/python.d.plugin/elasticsearch/elasticsearch.conf
diff --git a/collectors/python.d.plugin/example/Makefile.inc b/collectors/python.d.plugin/example/Makefile.inc
new file mode 100644
index 000000000..1b027d5a7
--- /dev/null
+++ b/collectors/python.d.plugin/example/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += example/example.chart.py
+dist_pythonconfig_DATA += example/example.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += example/README.md example/Makefile.inc
+
diff --git a/collectors/python.d.plugin/example/README.md b/collectors/python.d.plugin/example/README.md
new file mode 100644
index 000000000..f9f314ac4
--- /dev/null
+++ b/collectors/python.d.plugin/example/README.md
@@ -0,0 +1 @@
+An example python data collection module.
\ No newline at end of file
diff --git a/python.d/example.chart.py b/collectors/python.d.plugin/example/example.chart.py
index ee7ff62fc..85defa4d1 100644
--- a/python.d/example.chart.py
+++ b/collectors/python.d.plugin/example/example.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: example netdata python.d module
-# Author: Pawel Krupa (paulfantom)
+# Author: Put your name here (your github login)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from random import SystemRandom
 
diff --git a/conf.d/python.d/example.conf b/collectors/python.d.plugin/example/example.conf
index e7fed9b50..e7fed9b50 100644
--- a/conf.d/python.d/example.conf
+++ b/collectors/python.d.plugin/example/example.conf
diff --git a/collectors/python.d.plugin/exim/Makefile.inc b/collectors/python.d.plugin/exim/Makefile.inc
new file mode 100644
index 000000000..36ffa56d2
--- /dev/null
+++ b/collectors/python.d.plugin/exim/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += exim/exim.chart.py
+dist_pythonconfig_DATA += exim/exim.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += exim/README.md exim/Makefile.inc
+
diff --git a/collectors/python.d.plugin/exim/README.md b/collectors/python.d.plugin/exim/README.md
new file mode 100644
index 000000000..b9a62cad9
--- /dev/null
+++ b/collectors/python.d.plugin/exim/README.md
@@ -0,0 +1,13 @@
+# exim
+
+Simple module executing `exim -bpc` to grab exim queue.
+This command can take a lot of time to finish its execution thus it is not recommended to run it every second.
+
+It produces only one chart:
+
+1. **Exim Queue Emails**
+ * emails
+
+Configuration is not needed.
+
+---
diff --git a/python.d/exim.chart.py b/collectors/python.d.plugin/exim/exim.chart.py
index 2e5b924ba..5431dd46b 100644
--- a/python.d/exim.chart.py
+++ b/collectors/python.d.plugin/exim/exim.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: exim netdata python.d module
 # Author: Pawel Krupa (paulfantom)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.FrameworkServices.ExecutableService import ExecutableService
 
@@ -14,17 +15,18 @@ ORDER = ['qemails']
 
 CHARTS = {
     'qemails': {
-        'options': [None, "Exim Queue Emails", "emails", 'queue', 'exim.qemails', 'line'],
+        'options': [None, 'Exim Queue Emails', 'emails', 'queue', 'exim.qemails', 'line'],
         'lines': [
             ['emails', None, 'absolute']
-        ]}
+        ]
+    }
 }
 
 
 class Service(ExecutableService):
     def __init__(self, configuration=None, name=None):
         ExecutableService.__init__(self, configuration=configuration, name=name)
-        self.command = "exim -bpc"
+        self.command = 'exim -bpc'
         self.order = ORDER
         self.definitions = CHARTS
 
diff --git a/conf.d/python.d/exim.conf b/collectors/python.d.plugin/exim/exim.conf
index 2add7b2cb..2add7b2cb 100644
--- a/conf.d/python.d/exim.conf
+++ b/collectors/python.d.plugin/exim/exim.conf
diff --git a/collectors/python.d.plugin/fail2ban/Makefile.inc b/collectors/python.d.plugin/fail2ban/Makefile.inc
new file mode 100644
index 000000000..31e117e53
--- /dev/null
+++ b/collectors/python.d.plugin/fail2ban/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += fail2ban/fail2ban.chart.py
+dist_pythonconfig_DATA += fail2ban/fail2ban.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += fail2ban/README.md fail2ban/Makefile.inc
+
diff --git a/collectors/python.d.plugin/fail2ban/README.md b/collectors/python.d.plugin/fail2ban/README.md
new file mode 100644
index 000000000..2ab021965
--- /dev/null
+++ b/collectors/python.d.plugin/fail2ban/README.md
@@ -0,0 +1,23 @@
+# fail2ban
+
+Module monitor fail2ban log file to show all bans for all active jails
+
+**Requirements:**
+ * fail2ban.log file MUST BE readable by netdata (A good idea is to add  **create 0640 root netdata** to fail2ban conf at logrotate.d)
+
+It produces one chart with multiple lines (one line per jail)
+
+### configuration
+
+Sample:
+
+```yaml
+local:
+ log_path: '/var/log/fail2ban.log'
+ conf_path: '/etc/fail2ban/jail.local'
+ exclude: 'dropbear apache'
+```
+If no configuration is given, module will attempt to read log file at `/var/log/fail2ban.log` and conf file at `/etc/fail2ban/jail.local`.
+If conf file is not found default jail is `ssh`.
+
+---
diff --git a/collectors/python.d.plugin/fail2ban/fail2ban.chart.py b/collectors/python.d.plugin/fail2ban/fail2ban.chart.py
new file mode 100644
index 000000000..954689008
--- /dev/null
+++ b/collectors/python.d.plugin/fail2ban/fail2ban.chart.py
@@ -0,0 +1,196 @@
+# -*- coding: utf-8 -*-
+# Description: fail2ban log netdata python.d module
+# Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import re
+import os
+
+from collections import defaultdict
+from glob import glob
+
+from bases.FrameworkServices.LogService import LogService
+
+
+ORDER = [
+    'jails_bans',
+    'jails_in_jail',
+]
+
+
+def charts(jails):
+    """
+    Chart definitions creating
+    """
+
+    ch = {
+        ORDER[0]: {
+                'options': [None, 'Jails Ban Rate', 'bans/s', 'bans', 'jail.bans', 'line'],
+                'lines': []
+        },
+        ORDER[1]: {
+                'options': [None, 'Banned IPs (since the last restart of netdata)', 'IPs', 'in jail',
+                            'jail.in_jail', 'line'],
+                'lines': []
+        },
+    }
+    for jail in jails:
+        ch[ORDER[0]]['lines'].append([jail, jail, 'incremental'])
+        ch[ORDER[1]]['lines'].append(['{0}_in_jail'.format(jail), jail, 'absolute'])
+
+    return ch
+
+
+RE_JAILS = re.compile(r'\[([a-zA-Z0-9_-]+)\][^\[\]]+?enabled\s+= (true|false)')
+
+# Example:
+# 2018-09-12 11:45:53,715 fail2ban.actions[25029]: WARNING [ssh] Unban 195.201.88.33
+# 2018-09-12 11:45:58,727 fail2ban.actions[25029]: WARNING [ssh] Ban 217.59.246.27
+RE_DATA = re.compile(r'\[(?P<jail>[A-Za-z-_0-9]+)\] (?P<action>Unban|Ban) (?P<ip>[a-f0-9.:]+)')
+
+DEFAULT_JAILS = [
+    'ssh',
+]
+
+
+class Service(LogService):
+    def __init__(self, configuration=None, name=None):
+        LogService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = dict()
+
+        self.log_path = self.configuration.get('log_path', '/var/log/fail2ban.log')
+        self.conf_path = self.configuration.get('conf_path', '/etc/fail2ban/jail.local')
+        self.conf_dir = self.configuration.get('conf_dir', '/etc/fail2ban/jail.d/')
+        self.exclude = self.configuration.get('exclude', str())
+
+        self.monitoring_jails = list()
+        self.banned_ips = defaultdict(set)
+        self.data = dict()
+
+    def check(self):
+        """
+        :return: bool
+        """
+        if not self.conf_path.endswith(('.conf', '.local')):
+            self.error('{0} is a wrong conf path name, must be *.conf or *.local'.format(self.conf_path))
+            return False
+
+        if not os.access(self.log_path, os.R_OK):
+            self.error('{0} is not readable'.format(self.log_path))
+            return False
+
+        if os.path.getsize(self.log_path) == 0:
+            self.error('{0} is empty'.format(self.log_path))
+            return False
+
+        self.monitoring_jails = self.jails_auto_detection()
+        for jail in self.monitoring_jails:
+            self.data[jail] = 0
+            self.data['{0}_in_jail'.format(jail)] = 0
+
+        self.definitions = charts(self.monitoring_jails)
+        self.info('monitoring jails: {0}'.format(self.monitoring_jails))
+
+        return True
+
+    def get_data(self):
+        """
+        :return: dict
+        """
+        raw = self._get_raw_data()
+
+        if not raw:
+            return None if raw is None else self.data
+
+        for row in raw:
+            match = RE_DATA.search(row)
+
+            if not match:
+                continue
+
+            match = match.groupdict()
+
+            if match['jail'] not in self.monitoring_jails:
+                continue
+
+            jail, action, ip = match['jail'], match['action'], match['ip']
+
+            if action == 'Ban':
+                self.data[jail] += 1
+                if ip not in self.banned_ips[jail]:
+                    self.banned_ips[jail].add(ip)
+                    self.data['{0}_in_jail'.format(jail)] += 1
+            else:
+                if ip in self.banned_ips[jail]:
+                    self.banned_ips[jail].remove(ip)
+                    self.data['{0}_in_jail'.format(jail)] -= 1
+
+            return self.data
+
+    def get_files_from_dir(self, dir_path, suffix):
+        """
+        :return: list
+        """
+        if not os.path.isdir(dir_path):
+            self.error('{0} is not a directory'.format(dir_path))
+            return list()
+
+        return glob('{0}/*.{1}'.format(self.conf_dir, suffix))
+
+    def get_jails_from_file(self, file_path):
+        """
+        :return: list
+        """
+        if not os.access(file_path, os.R_OK):
+            self.error('{0} is not readable or not exist'.format(file_path))
+            return list()
+
+        with open(file_path, 'rt') as f:
+            lines = f.readlines()
+            raw = ' '.join(line for line in lines if line.startswith(('[', 'enabled')))
+
+        match = RE_JAILS.findall(raw)
+        # Result: [('ssh', 'true'), ('dropbear', 'true'), ('pam-generic', 'true'), ...]
+
+        if not match:
+            self.debug('{0} parse failed'.format(file_path))
+            return list()
+
+        return match
+
+    def jails_auto_detection(self):
+        """
+        :return: list
+
+        Parses jail configuration files. Returns list of enabled jails.
+        According man jail.conf parse order must be
+        * jail.conf
+        * jail.d/*.conf (in alphabetical order)
+        * jail.local
+        * jail.d/*.local (in alphabetical order)
+        """
+        jails_files, all_jails, active_jails = list(), list(), list()
+
+        jails_files.append('{0}.conf'.format(self.conf_path.rsplit('.')[0]))
+        jails_files.extend(self.get_files_from_dir(self.conf_dir, 'conf'))
+        jails_files.append('{0}.local'.format(self.conf_path.rsplit('.')[0]))
+        jails_files.extend(self.get_files_from_dir(self.conf_dir, 'local'))
+
+        self.debug('config files to parse: {0}'.format(jails_files))
+
+        for f in jails_files:
+            all_jails.extend(self.get_jails_from_file(f))
+
+        exclude = self.exclude.split()
+
+        for name, status in all_jails:
+            if name in exclude:
+                continue
+
+            if status == 'true' and name not in active_jails:
+                active_jails.append(name)
+            elif status == 'false' and name in active_jails:
+                active_jails.remove(name)
+
+        return active_jails or DEFAULT_JAILS
diff --git a/conf.d/python.d/fail2ban.conf b/collectors/python.d.plugin/fail2ban/fail2ban.conf
index 60ca87231..60ca87231 100644
--- a/conf.d/python.d/fail2ban.conf
+++ b/collectors/python.d.plugin/fail2ban/fail2ban.conf
diff --git a/collectors/python.d.plugin/freeradius/Makefile.inc b/collectors/python.d.plugin/freeradius/Makefile.inc
new file mode 100644
index 000000000..54aa6492f
--- /dev/null
+++ b/collectors/python.d.plugin/freeradius/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += freeradius/freeradius.chart.py
+dist_pythonconfig_DATA += freeradius/freeradius.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += freeradius/README.md freeradius/Makefile.inc
+
diff --git a/collectors/python.d.plugin/freeradius/README.md b/collectors/python.d.plugin/freeradius/README.md
new file mode 100644
index 000000000..e5fe88ec3
--- /dev/null
+++ b/collectors/python.d.plugin/freeradius/README.md
@@ -0,0 +1,70 @@
+# freeradius
+
+Uses the `radclient` command to provide freeradius statistics. It is not recommended to run it every second.
+
+It produces:
+
+1. **Authentication counters:**
+ * access-accepts
+ * access-rejects
+ * auth-dropped-requests
+ * auth-duplicate-requests
+ * auth-invalid-requests
+ * auth-malformed-requests
+ * auth-unknown-types
+
+2. **Accounting counters:** [optional]
+ * accounting-requests
+ * accounting-responses
+ * acct-dropped-requests
+ * acct-duplicate-requests
+ * acct-invalid-requests
+ * acct-malformed-requests
+ * acct-unknown-types
+
+3. **Proxy authentication counters:** [optional]
+ * proxy-access-accepts
+ * proxy-access-rejects
+ * proxy-auth-dropped-requests
+ * proxy-auth-duplicate-requests
+ * proxy-auth-invalid-requests
+ * proxy-auth-malformed-requests
+ * proxy-auth-unknown-types
+
+4. **Proxy accounting counters:** [optional]
+ * proxy-accounting-requests
+ * proxy-accounting-responses
+ * proxy-acct-dropped-requests
+ * proxy-acct-duplicate-requests
+ * proxy-acct-invalid-requests
+ * proxy-acct-malformed-requests
+ * proxy-acct-unknown-typesa
+
+
+### configuration
+
+Sample:
+
+```yaml
+local:
+  host       : 'localhost'
+  port       : '18121'
+  secret     : 'adminsecret'
+  acct       : False # Freeradius accounting statistics.
+  proxy_auth : False # Freeradius proxy authentication statistics.
+  proxy_acct : False # Freeradius proxy accounting statistics.
+```
+
+**Freeradius server configuration:**
+
+The configuration for the status server is automatically created in the sites-available directory.
+By default, server is enabled and can be queried from every client.
+FreeRADIUS will only respond to status-server messages, if the status-server virtual server has been enabled.
+
+To do this, create a link from the sites-enabled directory to the status file in the sites-available directory:
+ * cd sites-enabled
+ * ln -s ../sites-available/status status
+
+and restart/reload your FREERADIUS server.
+
+---
diff --git a/python.d/freeradius.chart.py b/collectors/python.d.plugin/freeradius/freeradius.chart.py
index 3acc58d1a..3126831b7 100644
--- a/python.d/freeradius.chart.py
+++ b/collectors/python.d.plugin/freeradius/freeradius.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: freeradius netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from re import findall
 from subprocess import Popen, PIPE
@@ -20,7 +21,7 @@ ORDER = ['authentication', 'accounting', 'proxy-auth', 'proxy-acct']
 
 CHARTS = {
     'authentication': {
-        'options': [None, "Authentication", "packets/s", 'Authentication', 'freerad.auth', 'line'],
+        'options': [None, 'Authentication', 'packets/s', 'Authentication', 'freerad.auth', 'line'],
         'lines': [
             ['access-accepts', None, 'incremental'],
             ['access-rejects', None, 'incremental'],
@@ -29,9 +30,10 @@ CHARTS = {
             ['auth-invalid-requests', 'invalid-requests', 'incremental'],
             ['auth-malformed-requests', 'malformed-requests', 'incremental'],
             ['auth-unknown-types', 'unknown-types', 'incremental']
-            ]},
+        ]
+    },
     'accounting': {
-        'options': [None, "Accounting", "packets/s", 'Accounting', 'freerad.acct', 'line'],
+        'options': [None, 'Accounting', 'packets/s', 'Accounting', 'freerad.acct', 'line'],
         'lines': [
             ['accounting-requests', 'requests', 'incremental'],
             ['accounting-responses', 'responses', 'incremental'],
@@ -40,9 +42,10 @@ CHARTS = {
             ['acct-invalid-requests', 'invalid-requests', 'incremental'],
             ['acct-malformed-requests', 'malformed-requests', 'incremental'],
             ['acct-unknown-types', 'unknown-types', 'incremental']
-        ]},
+        ]
+    },
     'proxy-auth': {
-        'options': [None, "Proxy Authentication", "packets/s", 'Authentication', 'freerad.proxy.auth', 'line'],
+        'options': [None, 'Proxy Authentication', 'packets/s', 'Authentication', 'freerad.proxy.auth', 'line'],
         'lines': [
             ['proxy-access-accepts', 'access-accepts', 'incremental'],
             ['proxy-access-rejects', 'access-rejects', 'incremental'],
@@ -51,9 +54,10 @@ CHARTS = {
             ['proxy-auth-invalid-requests', 'invalid-requests', 'incremental'],
             ['proxy-auth-malformed-requests', 'malformed-requests', 'incremental'],
             ['proxy-auth-unknown-types', 'unknown-types', 'incremental']
-        ]},
+        ]
+    },
     'proxy-acct': {
-        'options': [None, "Proxy Accounting", "packets/s", 'Accounting', 'freerad.proxy.acct', 'line'],
+        'options': [None, 'Proxy Accounting', 'packets/s', 'Accounting', 'freerad.proxy.acct', 'line'],
         'lines': [
             ['proxy-accounting-requests', 'requests', 'incremental'],
             ['proxy-accounting-responses', 'responses', 'incremental'],
@@ -62,8 +66,8 @@ CHARTS = {
             ['proxy-acct-invalid-requests', 'invalid-requests', 'incremental'],
             ['proxy-acct-malformed-requests', 'malformed-requests', 'incremental'],
             ['proxy-acct-unknown-types', 'unknown-types', 'incremental']
-        ]}
-
+        ]
+    }
 }
 
 
@@ -105,7 +109,7 @@ class Service(SimpleService):
         """
         result = self._get_raw_data()
         return dict([(elem[0].lower(), int(elem[1])) for elem in findall(r'((?<=-)[AP][a-zA-Z-]+) = (\d+)', result)])
-        
+
     def _get_raw_data(self):
         """
         The following code is equivalent to
diff --git a/conf.d/python.d/freeradius.conf b/collectors/python.d.plugin/freeradius/freeradius.conf
index 3336d4c49..3336d4c49 100644
--- a/conf.d/python.d/freeradius.conf
+++ b/collectors/python.d.plugin/freeradius/freeradius.conf
diff --git a/collectors/python.d.plugin/go_expvar/Makefile.inc b/collectors/python.d.plugin/go_expvar/Makefile.inc
new file mode 100644
index 000000000..74f50d765
--- /dev/null
+++ b/collectors/python.d.plugin/go_expvar/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += go_expvar/go_expvar.chart.py
+dist_pythonconfig_DATA += go_expvar/go_expvar.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += go_expvar/README.md go_expvar/Makefile.inc
+
diff --git a/collectors/python.d.plugin/go_expvar/README.md b/collectors/python.d.plugin/go_expvar/README.md
new file mode 100644
index 000000000..6309c195f
--- /dev/null
+++ b/collectors/python.d.plugin/go_expvar/README.md
@@ -0,0 +1,276 @@
+# go_expvar
+
+The `go_expvar` module can monitor any Go application that exposes its metrics with the use of
+`expvar` package from the Go standard library.
+
+`go_expvar` produces charts for Go runtime memory statistics and optionally any number of custom charts.
+
+For the memory statistics, it produces the following charts:
+
+1. **Heap allocations** in kB
+ * alloc: size of objects allocated on the heap
+ * inuse: size of allocated heap spans
+
+2. **Stack allocations** in kB
+ * inuse: size of allocated stack spans
+
+3. **MSpan allocations** in kB
+ * inuse: size of allocated mspan structures
+
+4. **MCache allocations** in kB
+ * inuse: size of allocated mcache structures
+
+5. **Virtual memory** in kB
+ * sys: size of reserved virtual address space
+
+6. **Live objects**
+ * live: number of live objects in memory
+
+7. **GC pauses average** in ns
+ * avg: average duration of all GC stop-the-world pauses
+
+
+## Monitoring Go Applications
+
+Netdata can be used to monitor running Go applications that expose their metrics with
+the use of the [expvar package](https://golang.org/pkg/expvar/) included in Go standard library.
+
+The `expvar` package exposes these metrics over HTTP and is very easy to use.
+Consider this minimal sample below:
+
+```go
+package main
+
+import (
+        _ "expvar"
+        "net/http"
+)
+
+func main() {
+        http.ListenAndServe("127.0.0.1:8080", nil)
+}
+```
+
+When imported this way, the `expvar` package registers a HTTP handler at `/debug/vars` that
+exposes Go runtime's memory statistics in JSON format. You can inspect the output by opening
+the URL in your browser (or by using `wget` or `curl`).
+
+Sample output:
+
+```json
+{
+"cmdline": ["./expvar-demo-binary"],
+"memstats": {"Alloc":630856,"TotalAlloc":630856,"Sys":3346432,"Lookups":27, <ommited for brevity>}
+}
+```
+
+You can of course expose and monitor your own variables as well.
+Here is a sample Go application that exposes a few custom variables:
+
+```go
+package main
+
+import (
+    "expvar"
+    "net/http"
+    "runtime"
+    "time"
+)
+
+func main() {
+
+    tick := time.NewTicker(1 * time.Second)
+    num_go := expvar.NewInt("runtime.goroutines")
+    counters := expvar.NewMap("counters")
+    counters.Set("cnt1", new(expvar.Int))
+    counters.Set("cnt2", new(expvar.Float))
+
+    go http.ListenAndServe(":8080", nil)
+
+    for {
+        select {
+        case <- tick.C:
+            num_go.Set(int64(runtime.NumGoroutine()))
+            counters.Add("cnt1", 1)
+            counters.AddFloat("cnt2", 1.452)
+        }
+    }
+}
+```
+
+Apart from the runtime memory stats, this application publishes two counters and the
+number of currently running Goroutines and updates these stats every second.
+
+In the next section, we will cover how to monitor and chart these exposed stats with
+the use of `netdata`s ```go_expvar``` module.
+
+### Using netdata go_expvar module
+
+The `go_expvar` module is disabled by default. To enable it, edit [`python.d.conf`](../python.d.conf)
+(to edit it on your system run `/etc/netdata/edit-config python.d.conf`), and change the `go_expvar`
+variable to `yes`:
+
+```
+# Enable / Disable python.d.plugin modules
+#default_run: yes
+#
+# If "default_run" = "yes" the default for all modules is enabled (yes).
+# Setting any of these to "no" will disable it.
+# 
+# If "default_run" = "no" the default for all modules is disabled (no).
+# Setting any of these to "yes" will enable it.
+...
+go_expvar: yes
+...
+```
+
+Next, we need to edit the module configuration file (found at [`/etc/netdata/python.d/go_expvar.conf`](go_expvar.conf) by default)
+(to edit it on your system run `/etc/netdata/edit-config python.d/go_expvar.conf`).
+The module configuration consists of jobs, where each job can be used to monitor a separate Go application.
+Let's see a sample job configuration:
+
+```
+# /etc/netdata/python.d/go_expvar.conf
+
+app1:
+  name : 'app1'
+  url  : 'http://127.0.0.1:8080/debug/vars'
+  collect_memstats: true
+  extra_charts: {}
+```
+
+Let's go over each of the defined options:
+
+    name: 'app1'
+
+This is the job name that will appear at the netdata dashboard.
+If not defined, the job_name (top level key) will be used.
+
+    url: 'http://127.0.0.1:8080/debug/vars'
+
+This is the URL of the expvar endpoint. As the expvar handler can be installed
+in a custom path, the whole URL has to be specified. This value is mandatory.
+
+    collect_memstats: true
+
+Whether to enable collecting stats about Go runtime's memory. You can find more
+information about the exposed values at the [runtime package docs](https://golang.org/pkg/runtime/#MemStats).
+
+    extra_charts: {}
+
+Enables the user to specify custom expvars to monitor and chart.
+Will be explained in more detail below.
+
+**Note: if `collect_memstats` is disabled and no `extra_charts` are defined, the plugin will
+disable itself, as there will be no data to collect!**
+
+Apart from these options, each job supports options inherited from netdata's `python.d.plugin`
+and its base `UrlService` class. These are:
+
+    update_every: 1          # the job's data collection frequency
+    priority:     60000      # the job's order on the dashboard
+    retries:      60         # the job's number of restoration attempts
+    user:         admin      # use when the expvar endpoint is protected by HTTP Basic Auth
+    password:     sekret     # use when the expvar endpoint is protected by HTTP Basic Auth
+
+### Monitoring custom vars with go_expvar
+
+Now, memory stats might be useful, but what if you want netdata to monitor some custom values
+that your Go application exposes? The `go_expvar` module can do that as well with the use of
+the `extra_charts` configuration variable.
+
+The `extra_charts` variable is a YaML list of netdata chart definitions.
+Each chart definition has the following keys:
+
+    id:         netdata chart ID
+    options:    a key-value mapping of chart options
+    lines:      a list of line definitions
+
+**Note: please do not use dots in the chart or line ID field.
+See [this issue](https://github.com/netdata/netdata/pull/1902#issuecomment-284494195) for explanation.**
+
+Please see these two links to the official netdata documentation for more information about the values:
+
+- [External plugins - charts](../../plugins.d/#chart)
+- [Chart variables](https://github.com/netdata/netdata/wiki/How-to-write-new-module#global-variables-order-and-chart)
+
+**Line definitions**
+
+Each chart can define multiple lines (dimensions).
+A line definition is a key-value mapping of line options.
+Each line can have the following options:
+    
+    # mandatory
+    expvar_key: the name of the expvar as present in the JSON output of /debug/vars endpoint
+    expvar_type: value type; supported are "float" or "int"
+    id: the id of this line/dimension in netdata
+
+    # optional - netdata defaults are used if these options are not defined
+    name: ''
+    algorithm: absolute
+    multiplier: 1
+    divisor: 100 if expvar_type == float, 1 if expvar_type == int
+    hidden: False
+
+Please see the following link for more information about the options and their default values:
+[External plugins - dimensions](../../plugins.d/#dimension)
+
+Apart from top-level expvars, this plugin can also parse expvars stored in a multi-level map;
+All dicts in the resulting JSON document are then flattened to one level.
+Expvar names are joined together with '.' when flattening.
+
+Example:
+```
+{
+    "counters": {"cnt1": 1042, "cnt2": 1512.9839999999983},
+    "runtime.goroutines": 5
+}
+```
+
+In the above case, the exported variables will be available under `runtime.goroutines`,
+`counters.cnt1` and `counters.cnt2` expvar_keys. If the flattening results in a key collision,
+the first defined key wins and all subsequent keys with the same name are ignored.
+
+**Configuration example**
+
+The configuration below matches the second Go application described above.
+Netdata will monitor and chart memory stats for the application, as well as a custom chart of
+running goroutines and two dummy counters.
+
+```
+app1:
+  name : 'app1'
+  url  : 'http://127.0.0.1:8080/debug/vars'
+  collect_memstats: true
+  extra_charts:
+    - id: "runtime_goroutines"
+      options:
+        name: num_goroutines
+        title: "runtime: number of goroutines"
+        units: goroutines
+        family: runtime
+        context: expvar.runtime.goroutines
+        chart_type: line
+      lines:
+        - {expvar_key: 'runtime.goroutines', expvar_type: int, id: runtime_goroutines}
+    - id: "foo_counters"
+      options:
+        name: counters
+        title: "some random counters"
+        units: awesomeness
+        family: counters
+        context: expvar.foo.counters
+        chart_type: line
+      lines:
+        - {expvar_key: 'counters.cnt1', expvar_type: int, id: counters_cnt1}
+        - {expvar_key: 'counters.cnt2', expvar_type: float, id: counters_cnt2}
+```
+
+**Netdata charts example**
+
+The images below show how do the final charts in netdata look.
+
+![Memory stats charts](https://cloud.githubusercontent.com/assets/15180106/26762052/62b4af58-493b-11e7-9e69-146705acfc2c.png)
+
+![Custom charts](https://cloud.githubusercontent.com/assets/15180106/26762051/62ae915e-493b-11e7-8518-bd25a3886650.png)
+
diff --git a/python.d/go_expvar.chart.py b/collectors/python.d.plugin/go_expvar/go_expvar.chart.py
index cbd462570..76e8b72ec 100644
--- a/python.d/go_expvar.chart.py
+++ b/collectors/python.d.plugin/go_expvar/go_expvar.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: go_expvar netdata python.d module
 # Author: Jan Kral (kralewitz)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from __future__ import division
 import json
@@ -20,43 +21,50 @@ MEMSTATS_CHARTS = {
         'lines': [
             ['memstats_heap_alloc', 'alloc', 'absolute', 1, 1024],
             ['memstats_heap_inuse', 'inuse', 'absolute', 1, 1024]
-        ]},
+        ]
+    },
     'memstats_stack': {
         'options': ['stack', 'memory: size of stack memory structures', 'kB', 'memstats',
                     'expvar.memstats.stack', 'line'],
         'lines': [
             ['memstats_stack_inuse', 'inuse', 'absolute', 1, 1024]
-        ]},
+        ]
+    },
     'memstats_mspan': {
         'options': ['mspan', 'memory: size of mspan memory structures', 'kB', 'memstats',
                     'expvar.memstats.mspan', 'line'],
         'lines': [
             ['memstats_mspan_inuse', 'inuse', 'absolute', 1, 1024]
-        ]},
+        ]
+    },
     'memstats_mcache': {
         'options': ['mcache', 'memory: size of mcache memory structures', 'kB', 'memstats',
                     'expvar.memstats.mcache', 'line'],
         'lines': [
             ['memstats_mcache_inuse', 'inuse', 'absolute', 1, 1024]
-        ]},
+        ]
+    },
     'memstats_live_objects': {
         'options': ['live_objects', 'memory: number of live objects', 'objects', 'memstats',
                     'expvar.memstats.live_objects', 'line'],
         'lines': [
             ['memstats_live_objects', 'live']
-        ]},
+        ]
+    },
     'memstats_sys': {
         'options': ['sys', 'memory: size of reserved virtual address space', 'kB', 'memstats',
                     'expvar.memstats.sys', 'line'],
         'lines': [
             ['memstats_sys', 'sys', 'absolute', 1, 1024]
-        ]},
+        ]
+    },
     'memstats_gc_pauses': {
         'options': ['gc_pauses', 'memory: average duration of GC pauses', 'ns', 'memstats',
                     'expvar.memstats.gc_pauses', 'line'],
         'lines': [
             ['memstats_gc_pauses', 'avg']
-        ]},
+        ]
+    }
 }
 
 MEMSTATS_ORDER = ['memstats_heap', 'memstats_stack', 'memstats_mspan', 'memstats_mcache',
diff --git a/conf.d/python.d/go_expvar.conf b/collectors/python.d.plugin/go_expvar/go_expvar.conf
index c352b1674..ba8922d2e 100644
--- a/conf.d/python.d/go_expvar.conf
+++ b/collectors/python.d.plugin/go_expvar/go_expvar.conf
@@ -76,7 +76,7 @@
 #
 # Please visit the module wiki page for more information on how to use the extra_charts variable:
 #
-# https://github.com/firehol/netdata/wiki/Monitoring-Go-Applications#monitoring-custom-vars-with-go_expvar
+# https://github.com/netdata/netdata/wiki/Monitoring-Go-Applications#monitoring-custom-vars-with-go_expvar
 #
 # Configuration example
 # ---------------------
diff --git a/collectors/python.d.plugin/haproxy/Makefile.inc b/collectors/python.d.plugin/haproxy/Makefile.inc
new file mode 100644
index 000000000..ad24deaa0
--- /dev/null
+++ b/collectors/python.d.plugin/haproxy/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += haproxy/haproxy.chart.py
+dist_pythonconfig_DATA += haproxy/haproxy.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += haproxy/README.md haproxy/Makefile.inc
+
diff --git a/collectors/python.d.plugin/haproxy/README.md b/collectors/python.d.plugin/haproxy/README.md
new file mode 100644
index 000000000..4bff25670
--- /dev/null
+++ b/collectors/python.d.plugin/haproxy/README.md
@@ -0,0 +1,49 @@
+# haproxy
+
+Module monitors frontend and backend metrics such as bytes in, bytes out, sessions current, sessions in queue current.
+And health metrics such as backend servers status (server check should be used).
+
+Plugin can obtain data from url **OR** unix socket.
+
+**Requirement:**
+Socket MUST be readable AND writable by netdata user.
+
+It produces:
+
+1. **Frontend** family charts
+ * Kilobytes in/s
+ * Kilobytes out/s
+ * Sessions current
+ * Sessions in queue current
+
+2. **Backend** family charts
+ * Kilobytes in/s
+ * Kilobytes out/s
+ * Sessions current
+ * Sessions in queue current
+
+3. **Health** chart
+ * number of failed servers for every backend (in DOWN state)
+
+
+### configuration
+
+Sample:
+
+```yaml
+via_url:
+  user       : 'username' # ONLY IF stats auth is used
+  pass       : 'password' # # ONLY IF stats auth is used
+  url     : 'http://ip.address:port/url;csv;norefresh'
+```
+
+OR
+
+```yaml
+via_socket:
+  socket       : 'path/to/haproxy/sock'
+```
+
+If no configuration is given, module will fail to run.
+
+---
diff --git a/python.d/haproxy.chart.py b/collectors/python.d.plugin/haproxy/haproxy.chart.py
index 3061f5ef2..a46689f50 100644
--- a/python.d/haproxy.chart.py
+++ b/collectors/python.d.plugin/haproxy/haproxy.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: haproxy netdata python.d module
 # Author: l2isbad, ktarasz
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from collections import defaultdict
 from re import compile as re_compile
@@ -20,155 +21,185 @@ priority = 60000
 retries = 60
 
 # charts order (can be overridden if you want less charts, or different order)
-ORDER = ['fbin', 'fbout', 'fscur', 'fqcur',
-         'fhrsp_1xx', 'fhrsp_2xx', 'fhrsp_3xx', 'fhrsp_4xx', 'fhrsp_5xx', 'fhrsp_other', 'fhrsp_total',
-         'bbin', 'bbout', 'bscur', 'bqcur',
-         'bhrsp_1xx', 'bhrsp_2xx', 'bhrsp_3xx', 'bhrsp_4xx', 'bhrsp_5xx', 'bhrsp_other', 'bhrsp_total',
-         'bqtime', 'bttime', 'brtime', 'bctime',
-         'health_sup', 'health_sdown', 'health_bdown', 'health_idle']
+ORDER = [
+    'fbin',
+    'fbout',
+    'fscur',
+    'fqcur',
+    'fhrsp_1xx',
+    'fhrsp_2xx',
+    'fhrsp_3xx',
+    'fhrsp_4xx',
+    'fhrsp_5xx',
+    'fhrsp_other',
+    'fhrsp_total',
+    'bbin',
+    'bbout',
+    'bscur',
+    'bqcur',
+    'bhrsp_1xx',
+    'bhrsp_2xx',
+    'bhrsp_3xx',
+    'bhrsp_4xx',
+    'bhrsp_5xx',
+    'bhrsp_other',
+    'bhrsp_total',
+    'bqtime',
+    'bttime',
+    'brtime',
+    'bctime',
+    'health_sup',
+    'health_sdown',
+    'health_bdown',
+    'health_idle'
+]
 
 CHARTS = {
     'fbin': {
-        'options': [None, "Kilobytes In", "KB/s", 'frontend', 'haproxy_f.bin', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'Kilobytes In', 'KB/s', 'frontend', 'haproxy_f.bin', 'line'],
+        'lines': []
+    },
     'fbout': {
-        'options': [None, "Kilobytes Out", "KB/s", 'frontend', 'haproxy_f.bout', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'Kilobytes Out', 'KB/s', 'frontend', 'haproxy_f.bout', 'line'],
+        'lines': []
+    },
     'fscur': {
-        'options': [None, "Sessions Active", "sessions", 'frontend', 'haproxy_f.scur', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'Sessions Active', 'sessions', 'frontend', 'haproxy_f.scur', 'line'],
+        'lines': []
+    },
     'fqcur': {
-        'options': [None, "Session In Queue", "sessions", 'frontend', 'haproxy_f.qcur', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'Session In Queue', 'sessions', 'frontend', 'haproxy_f.qcur', 'line'],
+        'lines': []
+    },
     'fhrsp_1xx': {
-        'options': [None, "HTTP responses with 1xx code", "responses/s", 'frontend', 'haproxy_f.hrsp_1xx', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with 1xx code', 'responses/s', 'frontend', 'haproxy_f.hrsp_1xx', 'line'],
+        'lines': []
+    },
     'fhrsp_2xx': {
-        'options': [None, "HTTP responses with 2xx code", "responses/s", 'frontend', 'haproxy_f.hrsp_2xx', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with 2xx code', 'responses/s', 'frontend', 'haproxy_f.hrsp_2xx', 'line'],
+        'lines': []
+    },
     'fhrsp_3xx': {
-        'options': [None, "HTTP responses with 3xx code", "responses/s", 'frontend', 'haproxy_f.hrsp_3xx', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with 3xx code', 'responses/s', 'frontend', 'haproxy_f.hrsp_3xx', 'line'],
+        'lines': []
+    },
     'fhrsp_4xx': {
-        'options': [None, "HTTP responses with 4xx code", "responses/s", 'frontend', 'haproxy_f.hrsp_4xx', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with 4xx code', 'responses/s', 'frontend', 'haproxy_f.hrsp_4xx', 'line'],
+        'lines': []
+    },
     'fhrsp_5xx': {
-        'options': [None, "HTTP responses with 5xx code", "responses/s", 'frontend', 'haproxy_f.hrsp_5xx', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with 5xx code', 'responses/s', 'frontend', 'haproxy_f.hrsp_5xx', 'line'],
+        'lines': []
+    },
     'fhrsp_other': {
-        'options': [None, "HTTP responses with other codes (protocol error)", "responses/s", 'frontend', 'haproxy_f.hrsp_other', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with other codes (protocol error)', 'responses/s', 'frontend',
+                    'haproxy_f.hrsp_other', 'line'],
+        'lines': []
+    },
     'fhrsp_total': {
-        'options': [None, "HTTP responses", "responses", 'frontend', 'haproxy_f.hrsp_total', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses', 'responses', 'frontend', 'haproxy_f.hrsp_total', 'line'],
+        'lines': []
+    },
     'bbin': {
-        'options': [None, "Kilobytes In", "KB/s", 'backend', 'haproxy_b.bin', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'Kilobytes In', 'KB/s', 'backend', 'haproxy_b.bin', 'line'],
+        'lines': []
+    },
     'bbout': {
-        'options': [None, "Kilobytes Out", "KB/s", 'backend', 'haproxy_b.bout', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'Kilobytes Out', 'KB/s', 'backend', 'haproxy_b.bout', 'line'],
+        'lines': []
+    },
     'bscur': {
-        'options': [None, "Sessions Active", "sessions", 'backend', 'haproxy_b.scur', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'Sessions Active', 'sessions', 'backend', 'haproxy_b.scur', 'line'],
+        'lines': []
+    },
     'bqcur': {
-        'options': [None, "Sessions In Queue", "sessions", 'backend', 'haproxy_b.qcur', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'Sessions In Queue', 'sessions', 'backend', 'haproxy_b.qcur', 'line'],
+        'lines': []
+    },
     'bhrsp_1xx': {
-        'options': [None, "HTTP responses with 1xx code", "responses/s", 'backend', 'haproxy_b.hrsp_1xx', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with 1xx code', 'responses/s', 'backend', 'haproxy_b.hrsp_1xx', 'line'],
+        'lines': []
+    },
     'bhrsp_2xx': {
-        'options': [None, "HTTP responses with 2xx code", "responses/s", 'backend', 'haproxy_b.hrsp_2xx', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with 2xx code', 'responses/s', 'backend', 'haproxy_b.hrsp_2xx', 'line'],
+        'lines': []
+    },
     'bhrsp_3xx': {
-        'options': [None, "HTTP responses with 3xx code", "responses/s", 'backend', 'haproxy_b.hrsp_3xx', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with 3xx code', 'responses/s', 'backend', 'haproxy_b.hrsp_3xx', 'line'],
+        'lines': []
+    },
     'bhrsp_4xx': {
-        'options': [None, "HTTP responses with 4xx code", "responses/s", 'backend', 'haproxy_b.hrsp_4xx', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with 4xx code', 'responses/s', 'backend', 'haproxy_b.hrsp_4xx', 'line'],
+        'lines': []
+    },
     'bhrsp_5xx': {
-        'options': [None, "HTTP responses with 5xx code", "responses/s", 'backend', 'haproxy_b.hrsp_5xx', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses with 5xx code', 'responses/s', 'backend', 'haproxy_b.hrsp_5xx', 'line'],
+        'lines': []
+    },
     'bhrsp_other': {
-        'options': [None, "HTTP responses with other codes (protocol error)", "responses/s", 'backend',
+        'options': [None, 'HTTP responses with other codes (protocol error)', 'responses/s', 'backend',
                     'haproxy_b.hrsp_other', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'bhrsp_total': {
-        'options': [None, "HTTP responses (total)", "responses/s", 'backend', 'haproxy_b.hrsp_total', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'HTTP responses (total)', 'responses/s', 'backend', 'haproxy_b.hrsp_total', 'line'],
+        'lines': []
+    },
     'bqtime': {
-        'options': [None, "The average queue time over the 1024 last requests", "ms", 'backend', 'haproxy_b.qtime', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'The average queue time over the 1024 last requests', 'ms', 'backend',
+                    'haproxy_b.qtime', 'line'],
+        'lines': []
+    },
     'bctime': {
-        'options': [None, "The average connect time over the 1024 last requests", "ms", 'backend',
+        'options': [None, 'The average connect time over the 1024 last requests', 'ms', 'backend',
                     'haproxy_b.ctime', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'brtime': {
-        'options': [None, "The average response time over the 1024 last requests", "ms", 'backend',
+        'options': [None, 'The average response time over the 1024 last requests', 'ms', 'backend',
                     'haproxy_b.rtime', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'bttime': {
-        'options': [None, "The average total session time over the 1024 last requests", "ms", 'backend',
+        'options': [None, 'The average total session time over the 1024 last requests', 'ms', 'backend',
                     'haproxy_b.ttime', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'health_sdown': {
-        'options': [None, "Backend Servers In DOWN State", "failed servers", 'health',
+        'options': [None, 'Backend Servers In DOWN State', 'failed servers', 'health',
                     'haproxy_hs.down', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'health_sup': {
-        'options': [None, "Backend Servers In UP State", "health servers", 'health',
+        'options': [None, 'Backend Servers In UP State', 'health servers', 'health',
                     'haproxy_hs.up', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'health_bdown': {
-        'options': [None, "Is Backend Alive? 1 = DOWN", "failed backend", 'health', 'haproxy_hb.down', 'line'],
-        'lines': [
-        ]},
+        'options': [None, 'Is Backend Alive? 1 = DOWN', 'failed backend', 'health', 'haproxy_hb.down', 'line'],
+        'lines': []
+    },
     'health_idle': {
-        'options': [None, "The Ratio Of Polling Time Vs Total Time", "percent", 'health', 'haproxy.idle', 'line'],
+        'options': [None, 'The Ratio Of Polling Time Vs Total Time', 'percent', 'health', 'haproxy.idle', 'line'],
         'lines': [
             ['idle', None, 'absolute']
-        ]}
+        ]
+    }
 }
 
 
-METRICS = {'bin': {'algorithm': 'incremental', 'divisor': 1024},
-           'bout': {'algorithm': 'incremental', 'divisor': 1024},
-           'scur': {'algorithm': 'absolute', 'divisor': 1},
-           'qcur': {'algorithm': 'absolute', 'divisor': 1},
-           'hrsp_1xx': {'algorithm': 'incremental', 'divisor': 1},
-           'hrsp_2xx': {'algorithm': 'incremental', 'divisor': 1},
-           'hrsp_3xx': {'algorithm': 'incremental', 'divisor': 1},
-           'hrsp_4xx': {'algorithm': 'incremental', 'divisor': 1},
-           'hrsp_5xx': {'algorithm': 'incremental', 'divisor': 1},
-           'hrsp_other': {'algorithm': 'incremental', 'divisor': 1},
-           }
+METRICS = {
+    'bin': {'algorithm': 'incremental', 'divisor': 1024},
+    'bout': {'algorithm': 'incremental', 'divisor': 1024},
+    'scur': {'algorithm': 'absolute', 'divisor': 1},
+    'qcur': {'algorithm': 'absolute', 'divisor': 1},
+    'hrsp_1xx': {'algorithm': 'incremental', 'divisor': 1},
+    'hrsp_2xx': {'algorithm': 'incremental', 'divisor': 1},
+    'hrsp_3xx': {'algorithm': 'incremental', 'divisor': 1},
+    'hrsp_4xx': {'algorithm': 'incremental', 'divisor': 1},
+    'hrsp_5xx': {'algorithm': 'incremental', 'divisor': 1},
+    'hrsp_other': {'algorithm': 'incremental', 'divisor': 1}
+}
 
 
 BACKEND_METRICS = {
diff --git a/conf.d/python.d/haproxy.conf b/collectors/python.d.plugin/haproxy/haproxy.conf
index a40dd76a5..a40dd76a5 100644
--- a/conf.d/python.d/haproxy.conf
+++ b/collectors/python.d.plugin/haproxy/haproxy.conf
diff --git a/collectors/python.d.plugin/hddtemp/Makefile.inc b/collectors/python.d.plugin/hddtemp/Makefile.inc
new file mode 100644
index 000000000..22852b646
--- /dev/null
+++ b/collectors/python.d.plugin/hddtemp/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += hddtemp/hddtemp.chart.py
+dist_pythonconfig_DATA += hddtemp/hddtemp.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += hddtemp/README.md hddtemp/Makefile.inc
+
diff --git a/collectors/python.d.plugin/hddtemp/README.md b/collectors/python.d.plugin/hddtemp/README.md
new file mode 100644
index 000000000..1236186a5
--- /dev/null
+++ b/collectors/python.d.plugin/hddtemp/README.md
@@ -0,0 +1,22 @@
+# hddtemp
+
+Module monitors disk temperatures from one or more hddtemp daemons.
+
+**Requirement:**
+Running `hddtemp` in daemonized mode with access on tcp port
+
+It produces one chart **Temperature** with dynamic number of dimensions (one per disk)
+
+### configuration
+
+Sample:
+
+```yaml
+update_every: 3
+host: "127.0.0.1"
+port: 7634
+```
+
+If no configuration is given, module will attempt to connect to hddtemp daemon on `127.0.0.1:7634` address
+
+---
diff --git a/collectors/python.d.plugin/hddtemp/hddtemp.chart.py b/collectors/python.d.plugin/hddtemp/hddtemp.chart.py
new file mode 100644
index 000000000..dea701171
--- /dev/null
+++ b/collectors/python.d.plugin/hddtemp/hddtemp.chart.py
@@ -0,0 +1,100 @@
+# -*- coding: utf-8 -*-
+# Description: hddtemp netdata python.d module
+# Author: Pawel Krupa (paulfantom)
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+
+import re
+
+from copy import deepcopy
+
+from bases.FrameworkServices.SocketService import SocketService
+
+
+ORDER = ['temperatures']
+
+CHARTS = {
+    'temperatures': {
+        'options': ['disks_temp', 'Disks Temperatures', 'Celsius', 'temperatures', 'hddtemp.temperatures', 'line'],
+        'lines': [
+            # lines are created dynamically in `check()` method
+        ]}}
+
+RE = re.compile(r'\/dev\/([^|]+)\|([^|]+)\|([0-9]+|SLP|UNK)\|')
+
+
+class Disk:
+    def __init__(self, id_, name, temp):
+        self.id = id_.split('/')[-1]
+        self.name = name.replace(' ', '_')
+        self.temp = temp if temp.isdigit() else 0
+
+    def __repr__(self):
+        return self.id
+
+
+class Service(SocketService):
+    def __init__(self, configuration=None, name=None):
+        SocketService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = deepcopy(CHARTS)
+        self._keep_alive = False
+        self.request = ""
+        self.host = "127.0.0.1"
+        self.port = 7634
+        self.do_only = self.configuration.get('devices')
+
+    def get_disks(self):
+        r = self._get_raw_data()
+
+        if not r:
+            return None
+
+        m = RE.findall(r)
+
+        if not m:
+            self.error("received data doesn't have needed records")
+            return None
+
+        rv = [Disk(*d) for d in m]
+        self.debug('available disks: {0}'.format(rv))
+
+        if self.do_only:
+            return [v for v in rv if v.id in self.do_only]
+        return rv
+
+    def get_data(self):
+        """
+        Get data from TCP/IP socket
+        :return: dict
+        """
+
+        disks = self.get_disks()
+
+        if not disks:
+            return None
+
+        return dict((d.id, d.temp) for d in disks)
+
+    def check(self):
+        """
+        Parse configuration, check if hddtemp is available, and dynamically create chart lines data
+        :return: boolean
+        """
+        self._parse_config()
+        disks = self.get_disks()
+
+        if not disks:
+            return False
+
+        for d in disks:
+            n = d.id if d.id.startswith('sd') else d.name
+            dim = [d.id, n]
+            self.definitions['temperatures']['lines'].append(dim)
+
+        return True
+
+    @staticmethod
+    def _check_raw_data(data):
+        return not bool(data)
diff --git a/conf.d/python.d/hddtemp.conf b/collectors/python.d.plugin/hddtemp/hddtemp.conf
index 9165798a2..9165798a2 100644
--- a/conf.d/python.d/hddtemp.conf
+++ b/collectors/python.d.plugin/hddtemp/hddtemp.conf
diff --git a/collectors/python.d.plugin/httpcheck/Makefile.inc b/collectors/python.d.plugin/httpcheck/Makefile.inc
new file mode 100644
index 000000000..4a5bd856d
--- /dev/null
+++ b/collectors/python.d.plugin/httpcheck/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += httpcheck/httpcheck.chart.py
+dist_pythonconfig_DATA += httpcheck/httpcheck.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += httpcheck/README.md httpcheck/Makefile.inc
+
diff --git a/collectors/python.d.plugin/httpcheck/README.md b/collectors/python.d.plugin/httpcheck/README.md
new file mode 100644
index 000000000..759107663
--- /dev/null
+++ b/collectors/python.d.plugin/httpcheck/README.md
@@ -0,0 +1,41 @@
+# httpcheck
+
+Module monitors remote http server for availability and response time.
+
+Following charts are drawn per job:
+
+1. **Response time** ms
+ * Time in 0.1 ms resolution in which the server responds.
+   If the connection failed, the value is missing.
+
+2. **Status** boolean
+ * Connection successful
+ * Unexpected content: No Regex match found in the response
+ * Unexpected status code: Do we get 500 errors?
+ * Connection failed: port not listening or blocked
+ * Connection timed out: host or port unreachable
+
+### configuration
+
+Sample configuration and their default values.
+
+```yaml
+server:
+  url: 'http://host:port/path'  # required
+  status_accepted:              # optional
+    - 200
+  timeout: 1                    # optional, supports decimals (e.g. 0.2)
+  update_every: 3               # optional
+  regex: 'REGULAR_EXPRESSION'   # optional, see https://docs.python.org/3/howto/regex.html
+  redirect: yes                 # optional
+```
+
+### notes
+
+ * The status chart is primarily intended for alarms, badges or for access via API.
+ * A system/service/firewall might block netdata's access if a portscan or
+   similar is detected.
+ * This plugin is meant for simple use cases. Currently, the accuracy of the
+   response time is low and should be used as reference only.
+
+---
diff --git a/python.d/httpcheck.chart.py b/collectors/python.d.plugin/httpcheck/httpcheck.chart.py
index b0177ff90..f046f33c0 100644
--- a/python.d/httpcheck.chart.py
+++ b/collectors/python.d.plugin/httpcheck/httpcheck.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: http check netdata python.d module
 # Original Author: ccremer (github.com/ccremer)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import urllib3
 import re
@@ -35,12 +36,14 @@ CHARTS = {
         'options': [None, 'HTTP response time', 'ms', 'response', 'httpcheck.responsetime', 'line'],
         'lines': [
             [HTTP_RESPONSE_TIME, 'time', 'absolute', 100, 1000]
-        ]},
+        ]
+    },
     'response_length': {
         'options': [None, 'HTTP response body length', 'characters', 'response', 'httpcheck.responselength', 'line'],
         'lines': [
             [HTTP_RESPONSE_LENGTH, 'length', 'absolute']
-        ]},
+        ]
+    },
     'status': {
         'options': [None, 'HTTP status', 'boolean', 'status', 'httpcheck.status', 'line'],
         'lines': [
@@ -49,7 +52,8 @@ CHARTS = {
             [HTTP_BAD_STATUS, 'bad status', 'absolute'],
             [HTTP_TIMEOUT, 'timeout', 'absolute'],
             [HTTP_NO_CONNECTION, 'no connection', 'absolute']
-        ]}
+        ]
+    }
 }
 
 
@@ -87,15 +91,15 @@ class Service(UrlService):
             self.process_response(content, data, status)
 
         except urllib3.exceptions.NewConnectionError as error:
-            self.debug("Connection failed: {url}. Error: {error}".format(url=url, error=error))
+            self.debug('Connection failed: {url}. Error: {error}'.format(url=url, error=error))
             data[HTTP_NO_CONNECTION] = 1
 
         except (urllib3.exceptions.TimeoutError, urllib3.exceptions.PoolError) as error:
-            self.debug("Connection timed out: {url}. Error: {error}".format(url=url, error=error))
+            self.debug('Connection timed out: {url}. Error: {error}'.format(url=url, error=error))
             data[HTTP_TIMEOUT] = 1
 
         except urllib3.exceptions.HTTPError as error:
-            self.debug("Connection failed: {url}. Error: {error}".format(url=url, error=error))
+            self.debug('Connection failed: {url}. Error: {error}'.format(url=url, error=error))
             data[HTTP_NO_CONNECTION] = 1
 
         except (TypeError, AttributeError) as error:
@@ -109,7 +113,7 @@ class Service(UrlService):
         self.debug('Content: \n\n{content}\n'.format(content=content))
         if status in self.status_codes_accepted:
             if self.regex and self.regex.search(content) is None:
-                self.debug("No match for regex '{regex}' found".format(regex=self.regex.pattern))
+                self.debug('No match for regex "{regex}" found'.format(regex=self.regex.pattern))
                 data[HTTP_BAD_CONTENT] = 1
             else:
                 data[HTTP_SUCCESS] = 1
diff --git a/conf.d/python.d/httpcheck.conf b/collectors/python.d.plugin/httpcheck/httpcheck.conf
index 058e057a6..bd21b5af8 100644
--- a/conf.d/python.d/httpcheck.conf
+++ b/collectors/python.d.plugin/httpcheck/httpcheck.conf
@@ -66,6 +66,7 @@ chart_cleanup: 0
 #     url: 'http[s]://host-ip-or-dns[:port][path]'
 #                             # [required] the remote host url to connect to. If [:port] is missing, it defaults to 80
 #                             #   for HTTP and 443 for HTTPS. [path] is optional too, defaults to /
+#     method: GET             # [optional] the HTTP request method (POST, PUT, DELETE, HEAD etc.)
 #     redirect: yes           # [optional] If the remote host returns 3xx status codes, the redirection url will be
 #                             #   followed (default).
 #     status_accepted:        # [optional] By default, 200 is accepted. Anything else will result in 'bad status' in the
diff --git a/collectors/python.d.plugin/icecast/Makefile.inc b/collectors/python.d.plugin/icecast/Makefile.inc
new file mode 100644
index 000000000..cb7c6fa0e
--- /dev/null
+++ b/collectors/python.d.plugin/icecast/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += icecast/icecast.chart.py
+dist_pythonconfig_DATA += icecast/icecast.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += icecast/README.md icecast/Makefile.inc
+
diff --git a/collectors/python.d.plugin/icecast/README.md b/collectors/python.d.plugin/icecast/README.md
new file mode 100644
index 000000000..a28a6c398
--- /dev/null
+++ b/collectors/python.d.plugin/icecast/README.md
@@ -0,0 +1,26 @@
+# icecast
+
+This module will monitor number of listeners for active sources.
+
+**Requirements:**
+ * icecast version >= 2.4.0
+
+It produces the following charts:
+
+1. **Listeners** in listeners
+ * source number
+
+### configuration
+
+Needs only `url` to server's `/status-json.xsl`
+
+Here is an example for remote server:
+
+```yaml
+remote:
+  url      : 'http://1.2.3.4:8443/status-json.xsl'
+```
+
+Without configuration, module attempts to connect to `http://localhost:8443/status-json.xsl`
+
+---
diff --git a/python.d/icecast.chart.py b/collectors/python.d.plugin/icecast/icecast.chart.py
index 792b99f3f..d8813f9ba 100644
--- a/python.d/icecast.chart.py
+++ b/collectors/python.d.plugin/icecast/icecast.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: icecast netdata python.d module
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import json
 
@@ -15,10 +16,10 @@ ORDER = ['listeners']
 
 CHARTS = {
     'listeners': {
-        'options': [None, 'Number Of Listeners', 'listeners',
-                    'listeners', 'icecast.listeners', 'line'],
+        'options': [None, 'Number Of Listeners', 'listeners', 'listeners', 'icecast.listeners', 'line'],
         'lines': [
-        ]}
+        ]
+    }
 }
 
 
@@ -86,7 +87,11 @@ class Service(UrlService):
         try:
             data = json.loads(raw_data)
         except ValueError as error:
-            self.error("JSON decode error:", error)
+            self.error('JSON decode error:', error)
             return None
 
-        return data['icestats'].get('source')
+        sources = data['icestats'].get('source')
+        if not sources:
+            return None
+
+        return sources if isinstance(sources, list) else [sources]
diff --git a/conf.d/python.d/icecast.conf b/collectors/python.d.plugin/icecast/icecast.conf
index a900d06d3..a900d06d3 100644
--- a/conf.d/python.d/icecast.conf
+++ b/collectors/python.d.plugin/icecast/icecast.conf
diff --git a/collectors/python.d.plugin/ipfs/Makefile.inc b/collectors/python.d.plugin/ipfs/Makefile.inc
new file mode 100644
index 000000000..68458cb38
--- /dev/null
+++ b/collectors/python.d.plugin/ipfs/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += ipfs/ipfs.chart.py
+dist_pythonconfig_DATA += ipfs/ipfs.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += ipfs/README.md ipfs/Makefile.inc
+
diff --git a/collectors/python.d.plugin/ipfs/README.md b/collectors/python.d.plugin/ipfs/README.md
new file mode 100644
index 000000000..a30649a5f
--- /dev/null
+++ b/collectors/python.d.plugin/ipfs/README.md
@@ -0,0 +1,25 @@
+# ipfs
+
+Module monitors [IPFS](https://ipfs.io) basic information.
+
+1. **Bandwidth** in kbits/s
+ * in
+ * out
+
+2. **Peers**
+ * peers
+
+### configuration
+
+Only url to IPFS server is needed.
+
+Sample:
+
+```yaml
+localhost:
+  name : 'local'
+  url  : 'http://localhost:5001'
+```
+
+---
+
diff --git a/python.d/ipfs.chart.py b/collectors/python.d.plugin/ipfs/ipfs.chart.py
index 43500dfb5..3f6794e48 100644
--- a/python.d/ipfs.chart.py
+++ b/collectors/python.d.plugin/ipfs/ipfs.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: IPFS netdata python.d module
-# Authors: Pawel Krupa (paulfantom), davidak
+# Authors: davidak
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import json
 
@@ -26,31 +27,43 @@ CHARTS = {
     'bandwidth': {
         'options': [None, 'IPFS Bandwidth', 'kbits/s', 'Bandwidth', 'ipfs.bandwidth', 'line'],
         'lines': [
-            ["in", None, "absolute", 8, 1000],
-            ["out", None, "absolute", -8, 1000]
-        ]},
+            ['in', None, 'absolute', 8, 1000],
+            ['out', None, 'absolute', -8, 1000]
+        ]
+    },
     'peers': {
         'options': [None, 'IPFS Peers', 'peers', 'Peers', 'ipfs.peers', 'line'],
         'lines': [
-            ["peers", None, 'absolute']
-        ]},
+            ['peers', None, 'absolute']
+        ]
+    },
     'repo_size': {
         'options': [None, 'IPFS Repo Size', 'GB', 'Size', 'ipfs.repo_size', 'area'],
         'lines': [
-            ["avail", None, "absolute", 1, 1e9],
-            ["size", None, "absolute", 1, 1e9],
-        ]},
+            ['avail', None, 'absolute', 1, 1e9],
+            ['size', None, 'absolute', 1, 1e9],
+        ]
+    },
     'repo_objects': {
         'options': [None, 'IPFS Repo Objects', 'objects', 'Objects', 'ipfs.repo_objects', 'line'],
         'lines': [
-            ["objects", None, "absolute", 1, 1],
-            ["pinned", None, "absolute", 1, 1],
-            ["recursive_pins", None, "absolute", 1, 1]
-        ]},
+            ['objects', None, 'absolute', 1, 1],
+            ['pinned', None, 'absolute', 1, 1],
+            ['recursive_pins', None, 'absolute', 1, 1]
+        ]
+    }
 }
 
-SI_zeroes = {'k': 3, 'm': 6, 'g': 9, 't': 12,
-             'p': 15, 'e': 18, 'z': 21, 'y': 24}
+SI_zeroes = {
+    'k': 3,
+    'm': 6,
+    'g': 9,
+    't': 12,
+    'p': 15,
+    'e': 18,
+    'z': 21,
+    'y': 24
+}
 
 
 class Service(UrlService):
@@ -60,6 +73,7 @@ class Service(UrlService):
         self.order = ORDER
         self.definitions = CHARTS
         self.__storage_max = None
+        self.do_pinapi = self.configuration.get('pinapi')
 
     def _get_json(self, sub_url):
         """
@@ -73,7 +87,7 @@ class Service(UrlService):
 
     @staticmethod
     def _recursive_pins(keys):
-        return len([k for k in keys if keys[k]["Type"] == b"recursive"])
+        return sum(1 for k in keys if keys[k]['Type'] == b'recursive')
 
     @staticmethod
     def _dehumanize(store_max):
@@ -93,7 +107,7 @@ class Service(UrlService):
 
     def _storagemax(self, store_cfg):
         if self.__storage_max is None:
-            self.__storage_max = self._dehumanize(store_cfg['StorageMax'])
+            self.__storage_max = self._dehumanize(store_cfg)
         return self.__storage_max
 
     def _get_data(self):
@@ -106,13 +120,15 @@ class Service(UrlService):
             '/api/v0/stats/bw':
                 [('in', 'RateIn', int), ('out', 'RateOut', int)],
             '/api/v0/swarm/peers':
-                [('peers', 'Strings', len)],
+                [('peers', 'Peers', len)],
             '/api/v0/stats/repo':
-                [('size', 'RepoSize', int), ('objects', 'NumObjects', int)],
-            '/api/v0/pin/ls':
-                [('pinned', 'Keys', len), ('recursive_pins', 'Keys', self._recursive_pins)],
-            '/api/v0/config/show': [('avail', 'Datastore', self._storagemax)]
+                [('size', 'RepoSize', int), ('objects', 'NumObjects', int), ('avail', 'StorageMax', self._storagemax)],
         }
+        if self.do_pinapi:
+                cfg.update({
+                    '/api/v0/pin/ls':
+                        [('pinned', 'Keys', len), ('recursive_pins', 'Keys', self._recursive_pins)]
+                })
         r = dict()
         for suburl in cfg:
             in_json = self._get_json(suburl)
diff --git a/conf.d/python.d/ipfs.conf b/collectors/python.d.plugin/ipfs/ipfs.conf
index c247c1b7a..e3df0f6bb 100644
--- a/conf.d/python.d/ipfs.conf
+++ b/collectors/python.d.plugin/ipfs/ipfs.conf
@@ -64,11 +64,16 @@
 # Additionally to the above, ipfs also supports the following:
 #
 #     url: 'URL'       # URL to the IPFS API
+#     pinapi: no       # Set status of IPFS pinned object polling
+#                      # Currently defaults to disabled due to IPFS Bug
+#                      # https://github.com/ipfs/go-ipfs/issues/3874
+#                      # resulting in very high CPU Usage
 #
 # ----------------------------------------------------------------------
 # AUTO-DETECTION JOBS
 # only one of them will run (they have the same name)
 
 localhost:
-  name : 'local'
-  url  : 'http://localhost:5001'
+  name   : 'local'
+  url    : 'http://localhost:5001'
+  pinapi : no
diff --git a/collectors/python.d.plugin/isc_dhcpd/Makefile.inc b/collectors/python.d.plugin/isc_dhcpd/Makefile.inc
new file mode 100644
index 000000000..44343fc9d
--- /dev/null
+++ b/collectors/python.d.plugin/isc_dhcpd/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += isc_dhcpd/isc_dhcpd.chart.py
+dist_pythonconfig_DATA += isc_dhcpd/isc_dhcpd.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += isc_dhcpd/README.md isc_dhcpd/Makefile.inc
+
diff --git a/collectors/python.d.plugin/isc_dhcpd/README.md b/collectors/python.d.plugin/isc_dhcpd/README.md
new file mode 100644
index 000000000..334d86e33
--- /dev/null
+++ b/collectors/python.d.plugin/isc_dhcpd/README.md
@@ -0,0 +1,34 @@
+# isc_dhcpd
+
+Module monitor leases database to show all active leases for given pools.
+
+**Requirements:**
+ * dhcpd leases file MUST BE readable by netdata
+ * pools MUST BE in CIDR format
+
+It produces:
+
+1. **Pools utilization** Aggregate chart for all pools.
+ * utilization in percent
+
+2. **Total leases**
+ * leases (overall number of leases for all pools)
+
+3. **Active leases** for every pools
+  * leases (number of active leases in pool)
+
+
+### configuration
+
+Sample:
+
+```yaml
+local:
+  leases_path       : '/var/lib/dhcp/dhcpd.leases'
+  pools       : '192.168.3.0/24 192.168.4.0/24 192.168.5.0/24'
+```
+
+In case of python2 you need to  install `py2-ipaddress` to make plugin work.
+The module will not work If no configuration is given.
+
+---
diff --git a/python.d/isc_dhcpd.chart.py b/collectors/python.d.plugin/isc_dhcpd/isc_dhcpd.chart.py
index eb6338452..a9f274949 100644
--- a/python.d/isc_dhcpd.chart.py
+++ b/collectors/python.d.plugin/isc_dhcpd/isc_dhcpd.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: isc dhcpd lease netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import os
 import re
@@ -25,17 +26,18 @@ ORDER = ['pools_utilization', 'pools_active_leases', 'leases_total']
 
 CHARTS = {
     'pools_utilization': {
-        'options': [None, 'Pools Utilization', '%', 'utilization',
-                    'isc_dhcpd.utilization', 'line'],
-        'lines': []},
+        'options': [None, 'Pools Utilization', '%', 'utilization', 'isc_dhcpd.utilization', 'line'],
+        'lines': []
+    },
     'pools_active_leases': {
-        'options': [None, 'Active Leases Per Pool', 'leases', 'active leases',
-                    'isc_dhcpd.active_leases', 'line'],
-        'lines': []},
+        'options': [None, 'Active Leases Per Pool', 'leases', 'active leases', 'isc_dhcpd.active_leases', 'line'],
+        'lines': []
+    },
     'leases_total': {
-        'options': [None, 'All Active Leases', 'leases', 'active leases',
-                    'isc_dhcpd.leases_total', 'line'],
-        'lines': [['leases_total', 'leases', 'absolute']],
+        'options': [None, 'All Active Leases', 'leases', 'active leases', 'isc_dhcpd.leases_total', 'line'],
+        'lines': [
+            ['leases_total', 'leases', 'absolute']
+        ],
         'variables': [
             ['leases_size']
         ]
diff --git a/conf.d/python.d/isc_dhcpd.conf b/collectors/python.d.plugin/isc_dhcpd/isc_dhcpd.conf
index 4a4c4a5e3..4a4c4a5e3 100644
--- a/conf.d/python.d/isc_dhcpd.conf
+++ b/collectors/python.d.plugin/isc_dhcpd/isc_dhcpd.conf
diff --git a/collectors/python.d.plugin/linux_power_supply/Makefile.inc b/collectors/python.d.plugin/linux_power_supply/Makefile.inc
new file mode 100644
index 000000000..1864ba524
--- /dev/null
+++ b/collectors/python.d.plugin/linux_power_supply/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += linux_power_supply/linux_power_supply.chart.py
+dist_pythonconfig_DATA += linux_power_supply/linux_power_supply.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += linux_power_supply/README.md linux_power_supply/Makefile.inc
+
diff --git a/collectors/python.d.plugin/linux_power_supply/README.md b/collectors/python.d.plugin/linux_power_supply/README.md
new file mode 100644
index 000000000..5cfbe41ce
--- /dev/null
+++ b/collectors/python.d.plugin/linux_power_supply/README.md
@@ -0,0 +1,67 @@
+# linux\_power\_supply
+
+This module monitors variosu metrics reported by power supply drivers
+on Linux.  This allows tracking and alerting on things like remaining
+battery capacity.
+
+Depending on the uderlying driver, it may provide the following charts
+and metrics:
+
+1. Capacity: The power supply capacity expressed as a percentage.
+  * capacity\_now
+
+2. Charge: The charge for the power supply, expressed as microamphours.
+  * charge\_full\_design
+  * charge\_full
+  * charge\_now
+  * charge\_empty
+  * charge\_empty\_design
+
+3. Energy: The energy for the power supply, expressed as microwatthours.
+  * energy\_full\_design
+  * energy\_full
+  * energy\_now
+  * energy\_empty
+  * energy\_empty\_design
+
+2. Voltage: The voltage for the power supply, expressed as microvolts.
+  * voltage\_max\_design
+  * voltage\_max
+  * voltage\_now
+  * voltage\_min
+  * voltage\_min\_design
+
+### configuration
+
+Sample:
+
+```yaml
+battery:
+  supply: 'BAT0'
+  charts: 'capacity charge energy voltage'
+```
+
+The `supply` key specifies the name of the power supply device to monitor.
+You can use `ls /sys/class/power_supply` to get a list of such devices
+on your system.
+
+The `charts` key is a space separated list of which charts to try
+to display.  It defaults to trying to display everything.
+
+### notes
+
+* Most drivers provide at least the first chart.  Battery powered ACPI
+compliant systems (like most laptops) provide all but the third, but do
+not provide all of the metrics for each chart.
+
+* Current, energy, and voltages are reported with a _very_ high precision
+by the power\_supply framework.  Usually, this is far higher than the
+actual hardware supports reporting, so expect to see changes in these
+charts jump instead of scaling smoothly.
+
+* If `max` or `full` attribute is defined by the driver, but not a
+corresponding `min or `empty` attribute, then netdata will still provide
+the corresponding `min` or `empty`, which will then always read as zero.
+This way, alerts which match on these will still work.
+
+---
diff --git a/collectors/python.d.plugin/linux_power_supply/linux_power_supply.chart.py b/collectors/python.d.plugin/linux_power_supply/linux_power_supply.chart.py
new file mode 100644
index 000000000..71d834e5d
--- /dev/null
+++ b/collectors/python.d.plugin/linux_power_supply/linux_power_supply.chart.py
@@ -0,0 +1,160 @@
+# -*- coding: utf-8 -*-
+# Description: Linux power_supply netdata python.d module
+# Author: Austin S. Hemmelgarn (Ferroin)
+
+import os
+import platform
+
+from bases.FrameworkServices.SimpleService import SimpleService
+
+# Everything except percentages is reported as µ units.
+PRECISION = 10 ** 6
+
+# A priority of 90000 places us next to the other PSU related stuff.
+PRIORITY = 90000
+
+# We add our charts dynamically when we probe for the device attributes,
+# so these are empty by default.
+ORDER = []
+
+CHARTS = {}
+
+
+def get_capacity_chart(syspath):
+    # Capacity is measured in percent.  We track one value.
+    options = [None, 'Capacity', '%', 'power_supply', 'power_supply.capacity', 'line']
+    lines = list()
+    attr_now = 'capacity'
+    if get_sysfs_value(os.path.join(syspath, attr_now)) is not None:
+        lines.append([attr_now, attr_now, 'absolute', 1, 1])
+        return {'capacity': {'options': options, 'lines': lines}}, [attr_now]
+    else:
+        return None, None
+
+
+def get_generic_chart(syspath, name, unit, maxname, minname):
+    # Used to generate charts for energy, charge, and voltage.
+    options = [None, name.title(), unit, 'power_supply', 'power_supply.{0}'.format(name), 'line']
+    lines = list()
+    attrlist = list()
+    attr_max_design = '{0}_{1}_design'.format(name, maxname)
+    attr_max = '{0}_{1}'.format(name, maxname)
+    attr_now = '{0}_now'.format(name)
+    attr_min = '{0}_{1}'.format(name, minname)
+    attr_min_design = '{0}_{1}_design'.format(name, minname)
+    if get_sysfs_value(os.path.join(syspath, attr_now)) is not None:
+        lines.append([attr_now, attr_now, 'absolute', 1, PRECISION])
+        attrlist.append(attr_now)
+    else:
+        return None, None
+    if get_sysfs_value(os.path.join(syspath, attr_max)) is not None:
+        lines.insert(0, [attr_max, attr_max, 'absolute', 1, PRECISION])
+        lines.append([attr_min, attr_min, 'absolute', 1, PRECISION])
+        attrlist.append(attr_max)
+        attrlist.append(attr_min)
+    elif get_sysfs_value(os.path.join(syspath, attr_min)) is not None:
+        lines.append([attr_min, attr_min, 'absolute', 1, PRECISION])
+        attrlist.append(attr_min)
+    if get_sysfs_value(os.path.join(syspath, attr_max_design)) is not None:
+        lines.insert(0, [attr_max_design, attr_max_design, 'absolute', 1, PRECISION])
+        lines.append([attr_min_design, attr_min_design, 'absolute', 1, PRECISION])
+        attrlist.append(attr_max_design)
+        attrlist.append(attr_min_design)
+    elif get_sysfs_value(os.path.join(syspath, attr_min_design)) is not None:
+        lines.append([attr_min_design, attr_min_design, 'absolute', 1, PRECISION])
+        attrlist.append(attr_min_design)
+    return {name: {'options': options, 'lines': lines}}, attrlist
+
+
+def get_charge_chart(syspath):
+    # Charge is measured in microamphours.  We track up to five
+    # attributes.
+    return get_generic_chart(syspath, 'charge', 'µAh', 'full', 'empty')
+
+
+def get_energy_chart(syspath):
+    # Energy is measured in microwatthours.  We track up to five
+    # attributes.
+    return get_generic_chart(syspath, 'energy', 'µWh', 'full', 'empty')
+
+
+def get_voltage_chart(syspath):
+    # Voltage is measured in microvolts. We track up to five attributes.
+    return get_generic_chart(syspath, 'voltage', 'µV', 'min', 'max')
+
+
+# This is a list of functions for generating charts.  Used below to save
+# a bit of code (and to make it a bit easier to add new charts).
+GET_CHART = {
+    'capacity': get_capacity_chart,
+    'charge': get_charge_chart,
+    'energy': get_energy_chart,
+    'voltage': get_voltage_chart
+}
+
+
+# This opens the specified file and returns the value in it or None if
+# the file doesn't exist.
+def get_sysfs_value(filepath):
+    try:
+        with open(filepath, 'r') as datasource:
+            return int(datasource.read())
+    except (OSError, IOError):
+        return None
+
+
+class Service(SimpleService):
+    def __init__(self, configuration=None, name=None):
+        SimpleService.__init__(self, configuration=configuration, name=name)
+        self.definitions = dict()
+        self.order = list()
+        self.attrlist = list()
+        self.supply = self.configuration.get('supply', None)
+        if self.supply is not None:
+            self.syspath = '/sys/class/power_supply/{0}'.format(self.supply)
+        self.types = self.configuration.get('charts', 'capacity').split()
+
+    def check(self):
+        if platform.system() != 'Linux':
+            self.error('Only supported on Linux.')
+            return False
+        if self.supply is None:
+            self.error('No power supply specified for monitoring.')
+            return False
+        if not self.types:
+            self.error('No attributes requested for monitoring.')
+            return False
+        if not os.access(self.syspath, os.R_OK):
+            self.error('Unable to access {0}'.format(self.syspath))
+            return False
+        return self.create_charts()
+
+    def create_charts(self):
+        chartset = set(GET_CHART).intersection(set(self.types))
+        if not chartset:
+            self.error('No valid attributes requested for monitoring.')
+            return False
+        charts = dict()
+        attrlist = list()
+        for item in chartset:
+            chart, attrs = GET_CHART[item](self.syspath)
+            if chart is not None:
+                charts.update(chart)
+                attrlist.extend(attrs)
+        if len(charts) == 0:
+            self.error('No charts can be created.')
+            return False
+        self.definitions.update(charts)
+        self.order.extend(sorted(charts))
+        self.attrlist.extend(attrlist)
+        return True
+
+    def _get_data(self):
+        data = dict()
+        for attr in self.attrlist:
+            attrpath = os.path.join(self.syspath, attr)
+            if attr.endswith(('_min', '_min_design', '_empty', '_empty_design')):
+                data[attr] = get_sysfs_value(attrpath) or 0
+            else:
+                data[attr] = get_sysfs_value(attrpath)
+        return data
diff --git a/collectors/python.d.plugin/linux_power_supply/linux_power_supply.conf b/collectors/python.d.plugin/linux_power_supply/linux_power_supply.conf
new file mode 100644
index 000000000..3cb610f7f
--- /dev/null
+++ b/collectors/python.d.plugin/linux_power_supply/linux_power_supply.conf
@@ -0,0 +1,81 @@
+# netdata python.d.plugin configuration for linux_power_supply
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_everye
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# In addition to the above parameters, linux_power_supply also supports
+# the following extra parameters.
+#
+#     supply: ''              # the name of the power supply to monitor
+#     charts: 'capacity'      # a space separated list of the charts to try
+#                             # and generate valid charts are 'capacity',
+#                             # 'charge', 'current', and 'voltage'
+#
+# Note that linux_power_supply will not automatically detect power
+# supplies in the system, you have to manually specify which ones you
+# want it to monitor.
+#
+# The following config will work to monitor the first battery in most
+# ACPI compliant battery powered systems (such as most laptops).
+#
+# battery:
+#     name: battery
+#     supply: BAT0
diff --git a/collectors/python.d.plugin/litespeed/Makefile.inc b/collectors/python.d.plugin/litespeed/Makefile.inc
new file mode 100644
index 000000000..5dd645020
--- /dev/null
+++ b/collectors/python.d.plugin/litespeed/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += litespeed/litespeed.chart.py
+dist_pythonconfig_DATA += litespeed/litespeed.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += litespeed/README.md litespeed/Makefile.inc
+
diff --git a/collectors/python.d.plugin/litespeed/README.md b/collectors/python.d.plugin/litespeed/README.md
new file mode 100644
index 000000000..d1482f33c
--- /dev/null
+++ b/collectors/python.d.plugin/litespeed/README.md
@@ -0,0 +1,47 @@
+# litespeed
+
+Module monitor litespeed web server performance metrics.
+
+It produces:
+
+1. **Network Throughput HTTP** in kilobits/s
+ * in
+ * out
+
+2. **Network Throughput HTTPS** in kilobits/s
+ * in
+ * out
+
+3. **Connections HTTP** in connections
+ * free
+ * used
+
+4. **Connections HTTPS** in connections
+ * free
+ * used
+
+5. **Requests** in requests/s
+ * requests
+
+6. **Requests In Processing** in requests
+ * processing
+
+7. **Public Cache Hits** in hits/s
+ * hits
+
+8. **Private Cache Hits** in hits/s
+ * hits
+
+9. **Static Hits** in hits/s
+ * hits
+
+
+### configuration
+```yaml
+local:
+  path  : 'PATH'
+```
+
+If no configuration is given, module will use "/tmp/lshttpd/".
+
+---
diff --git a/collectors/python.d.plugin/litespeed/litespeed.chart.py b/collectors/python.d.plugin/litespeed/litespeed.chart.py
new file mode 100644
index 000000000..efdc6869c
--- /dev/null
+++ b/collectors/python.d.plugin/litespeed/litespeed.chart.py
@@ -0,0 +1,186 @@
+# -*- coding: utf-8 -*-
+# Description: litespeed netdata python.d module
+# Author: Ilya Maschenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import glob
+import re
+import os
+
+from collections import namedtuple
+
+from bases.FrameworkServices.SimpleService import SimpleService
+
+
+update_every = 10
+
+# charts order (can be overridden if you want less charts, or different order)
+ORDER = [
+    'net_throughput_http', 'net_throughput_https',  # net throughput
+    'connections_http', 'connections_https',        # connections
+    'requests', 'requests_processing',              # requests
+    'pub_cache_hits', 'private_cache_hits',         # cache
+    'static_hits'                                   # static
+]
+
+CHARTS = {
+    'net_throughput_http': {
+        'options': [None, 'Network Throughput HTTP', 'kilobits/s', 'net throughput',
+                    'litespeed.net_throughput', 'area'],
+        'lines': [
+            ['bps_in', 'in', 'absolute'],
+            ['bps_out', 'out', 'absolute', -1]
+        ]
+    },
+    'net_throughput_https': {
+        'options': [None, 'Network Throughput HTTPS', 'kilobits/s', 'net throughput',
+                    'litespeed.net_throughput', 'area'],
+        'lines': [
+            ['ssl_bps_in', 'in', 'absolute'],
+            ['ssl_bps_out', 'out', 'absolute', -1]
+        ]
+    },
+    'connections_http': {
+        'options': [None, 'Connections HTTP', 'conns', 'connections', 'litespeed.connections', 'stacked'],
+        'lines': [
+            ['conn_free', 'free', 'absolute'],
+            ['conn_used', 'used', 'absolute']
+        ]
+    },
+    'connections_https': {
+        'options': [None, 'Connections HTTPS', 'conns', 'connections', 'litespeed.connections', 'stacked'],
+        'lines': [
+            ['ssl_conn_free', 'free', 'absolute'],
+            ['ssl_conn_used', 'used', 'absolute']
+        ]
+    },
+    'requests': {
+        'options': [None, 'Requests', 'requests/s', 'requests', 'litespeed.requests', 'line'],
+        'lines': [
+            ['requests', None, 'absolute', 1, 100]
+        ]
+    },
+    'requests_processing': {
+        'options': [None, 'Requests In Processing', 'requests', 'requests', 'litespeed.requests_processing', 'line'],
+        'lines': [
+            ['requests_processing', 'processing', 'absolute']
+        ]
+    },
+    'pub_cache_hits': {
+        'options': [None, 'Public Cache Hits', 'hits/s', 'cache', 'litespeed.cache', 'line'],
+        'lines': [
+            ['pub_cache_hits', 'hits', 'absolute', 1, 100]
+        ]
+    },
+    'private_cache_hits': {
+        'options': [None, 'Private Cache Hits', 'hits/s', 'cache', 'litespeed.cache', 'line'],
+        'lines': [
+            ['private_cache_hits', 'hits', 'absolute', 1, 100]
+        ]
+    },
+    'static_hits': {
+        'options': [None, 'Static Hits', 'hits/s', 'static', 'litespeed.static', 'line'],
+        'lines': [
+            ['static_hits', 'hits', 'absolute', 1, 100]
+        ]
+    }
+}
+
+t = namedtuple('T', ['key', 'id', 'mul'])
+
+T = [
+    t('BPS_IN', 'bps_in', 8),
+    t('BPS_OUT', 'bps_out', 8),
+    t('SSL_BPS_IN', 'ssl_bps_in', 8),
+    t('SSL_BPS_OUT', 'ssl_bps_out', 8),
+    t('REQ_PER_SEC', 'requests', 100),
+    t('REQ_PROCESSING', 'requests_processing', 1),
+    t('PUB_CACHE_HITS_PER_SEC', 'pub_cache_hits', 100),
+    t('PRIVATE_CACHE_HITS_PER_SEC', 'private_cache_hits', 100),
+    t('STATIC_HITS_PER_SEC', 'static_hits', 100),
+    t('PLAINCONN', 'conn_used', 1),
+    t('AVAILCONN', 'conn_free', 1),
+    t('SSLCONN', 'ssl_conn_used', 1),
+    t('AVAILSSL', 'ssl_conn_free', 1),
+]
+
+RE = re.compile(r'([A-Z_]+): ([0-9.]+)')
+
+ZERO_DATA = {
+    'bps_in': 0,
+    'bps_out': 0,
+    'ssl_bps_in': 0,
+    'ssl_bps_out': 0,
+    'requests': 0,
+    'requests_processing': 0,
+    'pub_cache_hits': 0,
+    'private_cache_hits': 0,
+    'static_hits': 0,
+    'conn_used': 0,
+    'conn_free': 0,
+    'ssl_conn_used': 0,
+    'ssl_conn_free': 0,
+}
+
+
+class Service(SimpleService):
+    def __init__(self, configuration=None, name=None):
+        SimpleService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+        self.path = self.configuration.get('path', '/tmp/lshttpd/')
+        self.files = list()
+
+    def check(self):
+        if not self.path:
+            self.error('"path" not specified')
+            return False
+
+        fs = glob.glob(os.path.join(self.path, '.rtreport*'))
+
+        if not fs:
+            self.error('"{0}" has no "rtreport" files or dir is not readable'.format(self.path))
+            return None
+
+        self.debug('stats files:', fs)
+
+        for f in fs:
+            if not is_readable_file(f):
+                self.error('{0} is not readable'.format(f))
+                continue
+            self.files.append(f)
+
+        return bool(self.files)
+
+    def get_data(self):
+        """
+        Format data received from http request
+        :return: dict
+        """
+        data = dict(ZERO_DATA)
+
+        for f in self.files:
+            try:
+                with open(f) as b:
+                    lines = b.readlines()
+            except (OSError, IOError) as err:
+                self.error(err)
+                return None
+            else:
+                parse_file(data, lines)
+
+        return data
+
+
+def parse_file(data, lines):
+    for line in lines:
+        if not line.startswith(('BPS_IN:', 'MAXCONN:', 'REQ_RATE []:')):
+            continue
+        m = dict(RE.findall(line))
+        for v in T:
+            if v.key in m:
+                data[v.id] += float(m[v.key]) * v.mul
+
+
+def is_readable_file(v):
+    return os.path.isfile(v) and os.access(v, os.R_OK)
diff --git a/collectors/python.d.plugin/litespeed/litespeed.conf b/collectors/python.d.plugin/litespeed/litespeed.conf
new file mode 100644
index 000000000..17d0f690e
--- /dev/null
+++ b/collectors/python.d.plugin/litespeed/litespeed.conf
@@ -0,0 +1,74 @@
+# netdata python.d.plugin configuration for litespeed
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# Additionally to the above, lightspeed also supports the following:
+#
+#     path: 'PATH'       # path to lightspeed stats files directory
+#
+# ----------------------------------------------------------------------
+# AUTO-DETECTION JOBS
+# only one of them will run (they have the same name)
+
+localhost:
+  name : 'local'
+  path  : '/tmp/lshttpd/'
diff --git a/collectors/python.d.plugin/logind/Makefile.inc b/collectors/python.d.plugin/logind/Makefile.inc
new file mode 100644
index 000000000..adadab120
--- /dev/null
+++ b/collectors/python.d.plugin/logind/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += logind/logind.chart.py
+dist_pythonconfig_DATA += logind/logind.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += logind/README.md logind/Makefile.inc
+
diff --git a/collectors/python.d.plugin/logind/README.md b/collectors/python.d.plugin/logind/README.md
new file mode 100644
index 000000000..8f8670d4a
--- /dev/null
+++ b/collectors/python.d.plugin/logind/README.md
@@ -0,0 +1,54 @@
+# logind
+
+This module monitors active sessions, users, and seats tracked by systemd-logind or elogind.
+
+It provides the following charts:
+
+1. **Sessions** Tracks the total number of sessions.
+  * Graphical: Local graphical sessions (running X11, or Wayland, or something else).
+  * Console: Local console sessions.
+  * Remote: Remote sessions.
+
+2. **Users** Tracks total number of unique user logins of each type.
+  * Graphical
+  * Console
+  * Remote
+
+3. **Seats** Total number of seats in use.
+  * Seats
+
+### configuration
+
+This module needs no configuration.  Just make sure the netdata user
+can run the `loginctl` command and get a session list without having to
+specify a path.
+
+This will work with any command that can output data in the _exact_
+same format as `loginctl list-sessions --no-legend`.  If you have some
+other command you want to use that outputs data in this format, you can
+specify it using the `command` key like so:
+
+```yaml
+command: '/path/to/other/command'
+```
+
+### notes
+
+* This module's ability to track logins is dependent on what PAM services
+are configured to register sessions with logind.  In particular, for
+most systems, it will only track TTY logins, local desktop logins,
+and logins through remote shell connections.
+
+* The users chart counts _usernames_ not UID's.  This is potentially
+important in configurations where multiple users have the same UID.
+
+* The users chart counts any given user name up to once for _each_ type
+of login.  So if the same user has a graphical and a console login on a
+system, they will show up once in the graphical count, and once in the
+console count.
+
+* Because the data collection process is rather expensive, this plugin
+is currently disabled by default, and needs to be explicitly enabled in
+`/etc/netdata/python.d.conf` before it will run.
+
+---
diff --git a/collectors/python.d.plugin/logind/logind.chart.py b/collectors/python.d.plugin/logind/logind.chart.py
new file mode 100644
index 000000000..bfc486c7f
--- /dev/null
+++ b/collectors/python.d.plugin/logind/logind.chart.py
@@ -0,0 +1,79 @@
+# -*- coding: utf-8 -*-
+# Description: logind netdata python.d module
+# Author: Austin S. Hemmelgarn (Ferroin)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from bases.FrameworkServices.ExecutableService import ExecutableService
+
+priority = 59999
+disabled_by_default = True
+
+ORDER = ['sessions', 'users', 'seats']
+
+CHARTS = {
+    'sessions': {
+        'options': [None, 'Logind Sessions', 'sessions', 'sessions', 'logind.sessions', 'stacked'],
+        'lines': [
+            ['sessions_graphical', 'Graphical', 'absolute', 1, 1],
+            ['sessions_console', 'Console', 'absolute', 1, 1],
+            ['sessions_remote', 'Remote', 'absolute', 1, 1]
+        ]
+    },
+    'users': {
+        'options': [None, 'Logind Users', 'users', 'users', 'logind.users', 'stacked'],
+        'lines': [
+            ['users_graphical', 'Graphical', 'absolute', 1, 1],
+            ['users_console', 'Console', 'absolute', 1, 1],
+            ['users_remote', 'Remote', 'absolute', 1, 1]
+        ]
+    },
+    'seats': {
+        'options': [None, 'Logind Seats', 'seats', 'seats', 'logind.seats', 'line'],
+        'lines': [
+            ['seats', 'Active Seats', 'absolute', 1, 1]
+        ]
+    }
+}
+
+
+class Service(ExecutableService):
+    def __init__(self, configuration=None, name=None):
+        ExecutableService.__init__(self, configuration=configuration, name=name)
+        self.command = 'loginctl list-sessions --no-legend'
+        self.order = ORDER
+        self.definitions = CHARTS
+
+    def _get_data(self):
+        ret = {
+            'sessions_graphical': 0,
+            'sessions_console': 0,
+            'sessions_remote': 0,
+        }
+        users = {
+            'graphical': list(),
+            'console': list(),
+            'remote': list()
+        }
+        seats = list()
+        data = self._get_raw_data()
+
+        for item in data:
+            fields = item.split()
+            if len(fields) == 3:
+                users['remote'].append(fields[2])
+                ret['sessions_remote'] += 1
+            elif len(fields) == 4:
+                users['graphical'].append(fields[2])
+                ret['sessions_graphical'] += 1
+                seats.append(fields[3])
+            elif len(fields) == 5:
+                users['console'].append(fields[2])
+                ret['sessions_console'] += 1
+                seats.append(fields[3])
+
+        ret['users_graphical'] = len(set(users['graphical']))
+        ret['users_console'] = len(set(users['console']))
+        ret['users_remote'] = len(set(users['remote']))
+        ret['seats'] = len(set(seats))
+
+        return ret
diff --git a/collectors/python.d.plugin/logind/logind.conf b/collectors/python.d.plugin/logind/logind.conf
new file mode 100644
index 000000000..0623493de
--- /dev/null
+++ b/collectors/python.d.plugin/logind/logind.conf
@@ -0,0 +1,62 @@
+# netdata python.d.plugin configuration for logind
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
diff --git a/collectors/python.d.plugin/mdstat/Makefile.inc b/collectors/python.d.plugin/mdstat/Makefile.inc
new file mode 100644
index 000000000..5125a271b
--- /dev/null
+++ b/collectors/python.d.plugin/mdstat/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += mdstat/mdstat.chart.py
+dist_pythonconfig_DATA += mdstat/mdstat.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += mdstat/README.md mdstat/Makefile.inc
+
diff --git a/collectors/python.d.plugin/mdstat/README.md b/collectors/python.d.plugin/mdstat/README.md
new file mode 100644
index 000000000..1ff8f7dab
--- /dev/null
+++ b/collectors/python.d.plugin/mdstat/README.md
@@ -0,0 +1,26 @@
+# mdstat
+
+Module monitor /proc/mdstat
+
+It produces:
+
+1. **Health** Number of failed disks in every array (aggregate chart).
+
+2. **Disks stats**
+ * total (number of devices array ideally would have)
+ * inuse (number of devices currently are in use)
+
+3. **Current status**
+ * resync in percent
+ * recovery in percent
+ * reshape in percent
+ * check in percent
+
+4. **Operation status** (if resync/recovery/reshape/check is active)
+ * finish in minutes
+ * speed in megabytes/s
+
+### configuration
+No configuration is needed.
+
+---
diff --git a/collectors/python.d.plugin/mdstat/mdstat.chart.py b/collectors/python.d.plugin/mdstat/mdstat.chart.py
new file mode 100644
index 000000000..b7306b6a7
--- /dev/null
+++ b/collectors/python.d.plugin/mdstat/mdstat.chart.py
@@ -0,0 +1,205 @@
+# -*- coding: utf-8 -*-
+# Description: mdstat netdata python.d module
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import re
+
+from collections import defaultdict
+
+from bases.FrameworkServices.SimpleService import SimpleService
+
+MDSTAT = '/proc/mdstat'
+MISMATCH_CNT = '/sys/block/{0}/md/mismatch_cnt'
+
+ORDER = ['mdstat_health']
+
+CHARTS = {
+    'mdstat_health': {
+        'options': [None, 'Faulty Devices In MD', 'failed disks', 'health', 'md.health', 'line'],
+        'lines': []
+    }
+}
+
+RE_DISKS = re.compile(r' (?P<array>[a-zA-Z_0-9]+) : active .+\['
+                      r'(?P<total_disks>[0-9]+)/'
+                      r'(?P<inuse_disks>[0-9]+)\]')
+
+RE_STATUS = re.compile(r' (?P<array>[a-zA-Z_0-9]+) : active .+ '
+                       r'(?P<operation>[a-z]+) =[ ]{1,2}'
+                       r'(?P<operation_status>[0-9.]+).+finish='
+                       r'(?P<finish_in>([0-9.]+))min speed='
+                       r'(?P<speed>[0-9]+)')
+
+
+def md_charts(name):
+    order = [
+        '{0}_disks'.format(name),
+        '{0}_operation'.format(name),
+        '{0}_mismatch_cnt'.format(name),
+        '{0}_finish'.format(name),
+        '{0}_speed'.format(name)
+    ]
+
+    charts = dict()
+    charts[order[0]] = {
+        'options': [None, 'Disks Stats', 'disks', name, 'md.disks', 'stacked'],
+        'lines': [
+            ['{0}_total_disks'.format(name), 'total', 'absolute'],
+            ['{0}_inuse_disks'.format(name), 'inuse', 'absolute']
+        ]
+    }
+
+    charts[order[1]] = {
+        'options': [None, 'Current Status', 'percent', name, 'md.status', 'line'],
+        'lines': [
+            ['{0}_resync'.format(name), 'resync', 'absolute', 1, 100],
+            ['{0}_recovery'.format(name), 'recovery', 'absolute', 1, 100],
+            ['{0}_reshape'.format(name), 'reshape', 'absolute', 1, 100],
+            ['{0}_check'.format(name), 'check', 'absolute', 1, 100],
+        ]
+    }
+
+    charts[order[2]] = {
+        'options': [None, 'Mismatch Count', 'unsynchronized blocks', name, 'md.mismatch_cnt', 'line'],
+        'lines': [
+            ['{0}_mismatch_cnt'.format(name), 'count', 'absolute']
+        ]
+    }
+
+    charts[order[3]] = {
+        'options': [None, 'Approximate Time Until Finish', 'seconds', name, 'md.rate', 'line'],
+        'lines': [
+            ['{0}_finish_in'.format(name), 'finish in', 'absolute', 1, 1000]
+        ]
+    }
+
+    charts[order[4]] = {
+        'options': [None, 'Operation Speed', 'KB/s', name, 'md.rate', 'line'],
+        'lines': [
+            ['{0}_speed'.format(name), 'speed', 'absolute', 1, 1000]
+        ]
+    }
+
+    return order, charts
+
+
+class MD:
+    def __init__(self, raw_data):
+        self.name = raw_data['array']
+        self.d = raw_data
+
+    def data(self):
+        rv = {
+            'total_disks': self.d['total_disks'],
+            'inuse_disks': self.d['inuse_disks'],
+            'health': int(self.d['total_disks']) - int(self.d['inuse_disks']),
+            'resync': 0,
+            'recovery': 0,
+            'reshape': 0,
+            'check': 0,
+            'finish_in': 0,
+            'speed': 0,
+        }
+
+        v = read_lines(MISMATCH_CNT.format(self.name))
+        if v:
+            rv['mismatch_cnt'] = v
+
+        if self.d.get('operation'):
+            rv[self.d['operation']] = float(self.d['operation_status']) * 100
+            rv['finish_in'] = float(self.d['finish_in']) * 1000 * 60
+            rv['speed'] = float(self.d['speed']) * 1000
+
+        return dict(('{0}_{1}'.format(self.name, k), v) for k, v in rv.items())
+
+
+class Service(SimpleService):
+    def __init__(self, configuration=None, name=None):
+        SimpleService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+        self.mds = list()
+
+    @staticmethod
+    def get_mds():
+        raw = read_lines(MDSTAT)
+
+        if not raw:
+            return None
+
+        return find_mds(raw)
+
+    def get_data(self):
+        """
+        Parse data from _get_raw_data()
+        :return: dict
+        """
+        mds = self.get_mds()
+
+        if not mds:
+            return None
+
+        data = dict()
+        for md in mds:
+            if md.name not in self.mds:
+                self.mds.append(md.name)
+                self.add_new_md_charts(md.name)
+            data.update(md.data())
+        return data
+
+    def check(self):
+        if not self.get_mds():
+            self.error('Failed to read data from {0} or there is no active arrays'.format(MDSTAT))
+            return False
+        return True
+
+    def add_new_md_charts(self, name):
+        order, charts = md_charts(name)
+
+        self.charts['mdstat_health'].add_dimension(['{0}_health'.format(name), name])
+
+        for chart_name in order:
+            params = [chart_name] + charts[chart_name]['options']
+            dims = charts[chart_name]['lines']
+
+            chart = self.charts.add_chart(params)
+            for dim in dims:
+                chart.add_dimension(dim)
+
+
+def find_mds(raw_data):
+    data = defaultdict(str)
+    counter = 1
+
+    for row in (elem.strip() for elem in raw_data):
+        if not row:
+            counter += 1
+            continue
+        data[counter] = ' '.join([data[counter], row])
+
+    mds = list()
+
+    for v in data.values():
+        m = RE_DISKS.search(v)
+
+        if not m:
+            continue
+
+        d = m.groupdict()
+
+        m = RE_STATUS.search(v)
+        if m:
+            d.update(m.groupdict())
+
+        mds.append(MD(d))
+
+    return sorted(mds, key=lambda md: md.name)
+
+
+def read_lines(path):
+    try:
+        with open(path) as f:
+            return f.readlines()
+    except (IOError, OSError):
+        return None
diff --git a/conf.d/python.d/mdstat.conf b/collectors/python.d.plugin/mdstat/mdstat.conf
index 66a2f153c..66a2f153c 100644
--- a/conf.d/python.d/mdstat.conf
+++ b/collectors/python.d.plugin/mdstat/mdstat.conf
diff --git a/collectors/python.d.plugin/megacli/Makefile.inc b/collectors/python.d.plugin/megacli/Makefile.inc
new file mode 100644
index 000000000..83680d723
--- /dev/null
+++ b/collectors/python.d.plugin/megacli/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += megacli/megacli.chart.py
+dist_pythonconfig_DATA += megacli/megacli.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += megacli/README.md megacli/Makefile.inc
+
diff --git a/collectors/python.d.plugin/megacli/README.md b/collectors/python.d.plugin/megacli/README.md
new file mode 100644
index 000000000..d288a6353
--- /dev/null
+++ b/collectors/python.d.plugin/megacli/README.md
@@ -0,0 +1,48 @@
+# megacli
+
+Module collects adapter, physical drives and battery stats.
+
+**Requirements:**
+ * `megacli` program
+ * `sudo` program
+ * `netdata` user needs to be able to be able to sudo the `megacli` program without password
+
+To grab stats it executes:
+ * `sudo -n megacli -LDPDInfo -aAll`
+ * `sudo -n megacli -AdpBbuCmd -a0`
+
+
+It produces:
+
+1. **Adapter State**
+
+2. **Physical Drives Media Errors**
+
+3. **Physical Drives Predictive Failures**
+
+4. **Battery Relative State of Charge**
+
+5. **Battery Cycle Count**
+
+### prerequisite
+This module uses `megacli` which can only be executed by root.  It uses
+`sudo` and assumes that it is configured such that the `netdata` user can
+execute `megacli` as root without password.
+
+Add to `sudoers`:
+
+    netdata ALL=(root)       NOPASSWD: /path/to/megacli
+
+### configuration
+
+**megacli** is disabled by default. Should be explicitly enabled in `python.d.conf`.
+```yaml
+megacli: yes
+```
+
+Battery stats disabled by default. To enable them modify `megacli.conf`.
+```yaml
+do_battery: yes
+```
+
+---
diff --git a/collectors/python.d.plugin/megacli/megacli.chart.py b/collectors/python.d.plugin/megacli/megacli.chart.py
new file mode 100644
index 000000000..41a1079f6
--- /dev/null
+++ b/collectors/python.d.plugin/megacli/megacli.chart.py
@@ -0,0 +1,279 @@
+# -*- coding: utf-8 -*-
+# Description: megacli netdata python.d module
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+
+import re
+
+from bases.FrameworkServices.ExecutableService import ExecutableService
+from bases.collection import find_binary
+
+
+disabled_by_default = True
+
+update_every = 5
+
+
+def adapter_charts(ads):
+    order = [
+        'adapter_degraded',
+    ]
+
+    def dims(ad):
+        return [['adapter_{0}_degraded'.format(a.id), 'adapter {0}'.format(a.id)] for a in ad]
+
+    charts = {
+        'adapter_degraded': {
+            'options': [None, 'Adapter State', 'is degraded', 'adapter', 'megacli.adapter_degraded', 'line'],
+            'lines': dims(ads)
+            },
+    }
+
+    return order, charts
+
+
+def pd_charts(pds):
+    order = [
+        'pd_media_error',
+        'pd_predictive_failure',
+    ]
+
+    def dims(k, pd):
+        return [['slot_{0}_{1}'.format(p.id, k), 'slot {0}'.format(p.id), 'incremental'] for p in pd]
+
+    charts = {
+        'pd_media_error': {
+            'options': [None, 'Physical Drives Media Errors', 'errors/s', 'pd', 'megacli.pd_media_error', 'line'],
+            'lines': dims('media_error', pds)
+        },
+        'pd_predictive_failure': {
+            'options': [None, 'Physical Drives Predictive Failures', 'failures/s', 'pd',
+                        'megacli.pd_predictive_failure', 'line'],
+            'lines': dims('predictive_failure', pds)
+        }
+    }
+
+    return order, charts
+
+
+def battery_charts(bats):
+    order = list()
+    charts = dict()
+
+    for b in bats:
+        order.append('bbu_{0}_relative_charge'.format(b.id))
+        charts.update(
+            {
+                'bbu_{0}_relative_charge'.format(b.id): {
+                    'options': [None, 'Relative State of Charge', '%', 'battery',
+                                'megacli.bbu_relative_charge', 'line'],
+                    'lines': [
+                        ['bbu_{0}_relative_charge'.format(b.id), 'adapter {0}'.format(b.id)],
+                    ]
+                }
+            }
+        )
+
+    for b in bats:
+        order.append('bbu_{0}_cycle_count'.format(b.id))
+        charts.update(
+            {
+                'bbu_{0}_cycle_count'.format(b.id): {
+                    'options': [None, 'Cycle Count', 'cycle count', 'battery', 'megacli.bbu_cycle_count', 'line'],
+                    'lines': [
+                        ['bbu_{0}_cycle_count'.format(b.id), 'adapter {0}'.format(b.id)],
+                    ]
+                }
+            }
+        )
+
+    return order, charts
+
+
+RE_ADAPTER = re.compile(
+    r'Adapter #([0-9]+) State(?:\s+)?: ([a-zA-Z]+)'
+)
+
+RE_VD = re.compile(
+    r'Slot Number: ([0-9]+) Media Error Count: ([0-9]+) Predictive Failure Count: ([0-9]+)'
+)
+
+RE_BATTERY = re.compile(
+    r'BBU Capacity Info for Adapter: ([0-9]+) Relative State of Charge: ([0-9]+) % Cycle Count: ([0-9]+)'
+)
+
+
+def find_adapters(d):
+    keys = ('Adapter #', 'State')
+    d = ' '.join(v.strip() for v in d if v.startswith(keys))
+    return [Adapter(*v) for v in RE_ADAPTER.findall(d)]
+
+
+def find_pds(d):
+    keys = ('Slot Number',  'Media Error Count', 'Predictive Failure Count')
+    d = ' '.join(v.strip() for v in d if v.startswith(keys))
+    return [PD(*v) for v in RE_VD.findall(d)]
+
+
+def find_batteries(d):
+    keys = ('BBU Capacity Info for Adapter', 'Relative State of Charge', 'Cycle Count')
+    d = ' '.join(v.strip() for v in d if v.strip().startswith(keys))
+    return [Battery(*v) for v in RE_BATTERY.findall(d)]
+
+
+class Adapter:
+    def __init__(self, n, state):
+        self.id = n
+        self.state = int(state == 'Degraded')
+
+    def data(self):
+        return {
+            'adapter_{0}_degraded'.format(self.id): self.state,
+        }
+
+
+class PD:
+    def __init__(self, n, media_err, predict_fail):
+        self.id = n
+        self.media_err = media_err
+        self.predict_fail = predict_fail
+
+    def data(self):
+        return {
+            'slot_{0}_media_error'.format(self.id): self.media_err,
+            'slot_{0}_predictive_failure'.format(self.id): self.predict_fail,
+        }
+
+
+class Battery:
+    def __init__(self, adapt_id, rel_charge, cycle_count):
+        self.id = adapt_id
+        self.rel_charge = rel_charge
+        self.cycle_count = cycle_count
+
+    def data(self):
+        return {
+            'bbu_{0}_relative_charge'.format(self.id): self.rel_charge,
+            'bbu_{0}_cycle_count'.format(self.id): self.cycle_count,
+        }
+
+
+# TODO: hardcoded sudo...
+class Megacli:
+    def __init__(self):
+        self.s = find_binary('sudo')
+        self.m = find_binary('megacli')
+        self.sudo_check = [self.s, '-n', '-v']
+        self.disk_info = [self.s, '-n', self.m, '-LDPDInfo', '-aAll', '-NoLog']
+        self.battery_info = [self.s, '-n', self.m, '-AdpBbuCmd', '-a0', '-NoLog']
+
+    def __bool__(self):
+        return bool(self.s and self.m)
+
+    def __nonzero__(self):
+        return self.__bool__()
+
+
+class Service(ExecutableService):
+    def __init__(self, configuration=None, name=None):
+        ExecutableService.__init__(self, configuration=configuration, name=name)
+        self.order = list()
+        self.definitions = dict()
+        self.megacli = Megacli()
+        self.do_battery = self.configuration.get('do_battery')
+
+    def check_sudo(self):
+        err = self._get_raw_data(command=self.megacli.sudo_check, stderr=True)
+        if err:
+            self.error(''.join(err))
+            return False
+        return True
+
+    def check_disk_info(self):
+        d = self._get_raw_data(command=self.megacli.disk_info)
+        if not d:
+            return False
+
+        ads = find_adapters(d)
+        pds = find_pds(d)
+
+        if not (ads and pds):
+            self.error('failed to parse "{0}" output'.format(' '.join(self.megacli.disk_info)))
+            return False
+
+        o, c = adapter_charts(ads)
+        self.order.extend(o)
+        self.definitions.update(c)
+
+        o, c = pd_charts(pds)
+        self.order.extend(o)
+        self.definitions.update(c)
+
+        return True
+
+    def check_battery(self):
+        d = self._get_raw_data(command=self.megacli.battery_info)
+        if not d:
+            return False
+
+        bats = find_batteries(d)
+
+        if not bats:
+            self.error('failed to parse "{0}" output'.format(' '.join(self.megacli.battery_info)))
+            return False
+
+        o, c = battery_charts(bats)
+        self.order.extend(o)
+        self.definitions.update(c)
+        return True
+
+    def check(self):
+        if not self.megacli:
+            self.error('can\'t locate "sudo" or "megacli" binary')
+            return None
+
+        if not (self.check_sudo() and self.check_disk_info()):
+            return False
+
+        if self.do_battery:
+            self.do_battery = self.check_battery()
+
+        return True
+
+    def get_data(self):
+        data = dict()
+
+        data.update(self.get_adapter_pd_data())
+
+        if self.do_battery:
+            data.update(self.get_battery_data())
+
+        return data or None
+
+    def get_adapter_pd_data(self):
+        raw = self._get_raw_data(command=self.megacli.disk_info)
+        data = dict()
+
+        if not raw:
+            return data
+
+        for a in find_adapters(raw):
+            data.update(a.data())
+
+        for p in find_pds(raw):
+            data.update(p.data())
+
+        return data
+
+    def get_battery_data(self):
+        raw = self._get_raw_data(command=self.megacli.battery_info)
+        data = dict()
+
+        if not raw:
+            return data
+
+        for b in find_batteries(raw):
+            data.update(b.data())
+
+        return data
diff --git a/collectors/python.d.plugin/megacli/megacli.conf b/collectors/python.d.plugin/megacli/megacli.conf
new file mode 100644
index 000000000..73afb2f7f
--- /dev/null
+++ b/collectors/python.d.plugin/megacli/megacli.conf
@@ -0,0 +1,62 @@
+# netdata python.d.plugin configuration for megacli
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# Additionally to the above, megacli also supports the following:
+#
+#     do_battery: yes/no      # default is no. Battery stats (adds additional call to megacli `megacli -AdpBbuCmd -a0`).
+#
+# ----------------------------------------------------------------------
+# uncomment the line below to collect battery statistics
+# do_battery: yes
diff --git a/collectors/python.d.plugin/memcached/Makefile.inc b/collectors/python.d.plugin/memcached/Makefile.inc
new file mode 100644
index 000000000..e60357161
--- /dev/null
+++ b/collectors/python.d.plugin/memcached/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += memcached/memcached.chart.py
+dist_pythonconfig_DATA += memcached/memcached.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += memcached/README.md memcached/Makefile.inc
+
diff --git a/collectors/python.d.plugin/memcached/README.md b/collectors/python.d.plugin/memcached/README.md
new file mode 100644
index 000000000..3521c109d
--- /dev/null
+++ b/collectors/python.d.plugin/memcached/README.md
@@ -0,0 +1,69 @@
+# memcached
+
+Memcached monitoring module. Data grabbed from [stats interface](https://github.com/memcached/memcached/wiki/Commands#stats).
+
+1. **Network** in kilobytes/s
+ * read
+ * written
+
+2. **Connections** per second
+ * current
+ * rejected
+ * total
+
+3. **Items** in cluster
+ * current
+ * total
+
+4. **Evicted and Reclaimed** items
+ * evicted
+ * reclaimed
+
+5. **GET** requests/s
+ * hits
+ * misses
+
+6. **GET rate** rate in requests/s
+ * rate
+
+7. **SET rate** rate in requests/s
+ * rate
+
+8. **DELETE** requests/s
+ * hits
+ * misses
+
+9. **CAS** requests/s
+ * hits
+ * misses
+ * bad value
+
+10. **Increment** requests/s
+ * hits
+ * misses
+
+11. **Decrement** requests/s
+ * hits
+ * misses
+
+12. **Touch** requests/s
+ * hits
+ * misses
+
+13. **Touch rate** rate in requests/s
+ * rate
+
+### configuration
+
+Sample:
+
+```yaml
+localtcpip:
+  name     : 'local'
+  host     : '127.0.0.1'
+  port     : 24242
+```
+
+If no configuration is given, module will attempt to connect to memcached instance on `127.0.0.1:11211` address.
+
+---
diff --git a/python.d/memcached.chart.py b/collectors/python.d.plugin/memcached/memcached.chart.py
index 4f7adfa23..3c310ec69 100644
--- a/python.d/memcached.chart.py
+++ b/collectors/python.d.plugin/memcached/memcached.chart.py
@@ -1,11 +1,12 @@
 # -*- coding: utf-8 -*-
 # Description: memcached netdata python.d module
 # Author: Pawel Krupa (paulfantom)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.FrameworkServices.SocketService import SocketService
 
 # default module values (can be overridden per job in `config`)
-#update_every = 2
+# update_every = 2
 priority = 60000
 retries = 60
 
@@ -28,92 +29,106 @@ CHARTS = {
         'lines': [
             ['avail', 'available', 'absolute', 1, 1048576],
             ['used', 'used', 'absolute', 1, 1048576]
-        ]},
+        ]
+    },
     'net': {
         'options': [None, 'Network', 'kilobits/s', 'network', 'memcached.net', 'area'],
         'lines': [
             ['bytes_read', 'in', 'incremental', 8, 1024],
             ['bytes_written', 'out', 'incremental', -8, 1024]
-        ]},
+        ]
+    },
     'connections': {
         'options': [None, 'Connections', 'connections/s', 'connections', 'memcached.connections', 'line'],
         'lines': [
             ['curr_connections', 'current', 'incremental'],
             ['rejected_connections', 'rejected', 'incremental'],
             ['total_connections', 'total', 'incremental']
-        ]},
+        ]
+    },
     'items': {
         'options': [None, 'Items', 'items', 'items', 'memcached.items', 'line'],
         'lines': [
             ['curr_items', 'current', 'absolute'],
             ['total_items', 'total', 'absolute']
-        ]},
+        ]
+    },
     'evicted_reclaimed': {
         'options': [None, 'Items', 'items', 'items', 'memcached.evicted_reclaimed', 'line'],
         'lines': [
             ['reclaimed', 'reclaimed', 'absolute'],
             ['evictions', 'evicted', 'absolute']
-        ]},
+        ]
+    },
     'get': {
         'options': [None, 'Requests', 'requests', 'get ops', 'memcached.get', 'stacked'],
         'lines': [
             ['get_hits', 'hits', 'percent-of-absolute-row'],
             ['get_misses', 'misses', 'percent-of-absolute-row']
-        ]},
+        ]
+    },
     'get_rate': {
         'options': [None, 'Rate', 'requests/s', 'get ops', 'memcached.get_rate', 'line'],
         'lines': [
             ['cmd_get', 'rate', 'incremental']
-        ]},
+        ]
+    },
     'set_rate': {
         'options': [None, 'Rate', 'requests/s', 'set ops', 'memcached.set_rate', 'line'],
         'lines': [
             ['cmd_set', 'rate', 'incremental']
-        ]},
+        ]
+    },
     'delete': {
         'options': [None, 'Requests', 'requests', 'delete ops', 'memcached.delete', 'stacked'],
         'lines': [
             ['delete_hits', 'hits', 'percent-of-absolute-row'],
             ['delete_misses', 'misses', 'percent-of-absolute-row'],
-        ]},
+        ]
+    },
     'cas': {
         'options': [None, 'Requests', 'requests', 'check and set ops', 'memcached.cas', 'stacked'],
         'lines': [
             ['cas_hits', 'hits', 'percent-of-absolute-row'],
             ['cas_misses', 'misses', 'percent-of-absolute-row'],
             ['cas_badval', 'bad value', 'percent-of-absolute-row']
-        ]},
+        ]
+    },
     'increment': {
         'options': [None, 'Requests', 'requests', 'increment ops', 'memcached.increment', 'stacked'],
         'lines': [
             ['incr_hits', 'hits', 'percent-of-absolute-row'],
             ['incr_misses', 'misses', 'percent-of-absolute-row']
-        ]},
+        ]
+    },
     'decrement': {
         'options': [None, 'Requests', 'requests', 'decrement ops', 'memcached.decrement', 'stacked'],
         'lines': [
             ['decr_hits', 'hits', 'percent-of-absolute-row'],
             ['decr_misses', 'misses', 'percent-of-absolute-row']
-        ]},
+        ]
+    },
     'touch': {
         'options': [None, 'Requests', 'requests', 'touch ops', 'memcached.touch', 'stacked'],
         'lines': [
             ['touch_hits', 'hits', 'percent-of-absolute-row'],
             ['touch_misses', 'misses', 'percent-of-absolute-row']
-        ]},
+        ]
+    },
     'touch_rate': {
         'options': [None, 'Rate', 'requests/s', 'touch ops', 'memcached.touch_rate', 'line'],
         'lines': [
             ['cmd_touch', 'rate', 'incremental']
-        ]}
+        ]
+    }
 }
 
 
 class Service(SocketService):
     def __init__(self, configuration=None, name=None):
         SocketService.__init__(self, configuration=configuration, name=name)
-        self.request = "stats\r\n"
-        self.host = "localhost"
+        self.request = 'stats\r\n'
+        self.host = 'localhost'
         self.port = 11211
         self._keep_alive = True
         self.unix_socket = None
@@ -131,13 +146,13 @@ class Service(SocketService):
             return None
 
         if response.startswith('ERROR'):
-            self.error("received ERROR")
+            self.error('received ERROR')
             return None
 
         try:
-            parsed = response.split("\n")
+            parsed = response.split('\n')
         except AttributeError:
-            self.error("response is invalid/empty")
+            self.error('response is invalid/empty')
             return None
 
         # split the response
@@ -148,7 +163,7 @@ class Service(SocketService):
                     t = line[5:].split(' ')
                     data[t[0]] = t[1]
                 except (IndexError, ValueError):
-                    self.debug("invalid line received: " + str(line))
+                    self.debug('invalid line received: ' + str(line))
 
         if not data:
             self.error("received data doesn't have any records")
@@ -165,10 +180,10 @@ class Service(SocketService):
 
     def _check_raw_data(self, data):
         if data.endswith('END\r\n'):
-            self.debug("received full response from memcached")
+            self.debug('received full response from memcached')
             return True
 
-        self.debug("waiting more data from memcached")
+        self.debug('waiting more data from memcached')
         return False
 
     def check(self):
diff --git a/conf.d/python.d/memcached.conf b/collectors/python.d.plugin/memcached/memcached.conf
index 85c3daf65..85c3daf65 100644
--- a/conf.d/python.d/memcached.conf
+++ b/collectors/python.d.plugin/memcached/memcached.conf
diff --git a/collectors/python.d.plugin/mongodb/Makefile.inc b/collectors/python.d.plugin/mongodb/Makefile.inc
new file mode 100644
index 000000000..784945aa6
--- /dev/null
+++ b/collectors/python.d.plugin/mongodb/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += mongodb/mongodb.chart.py
+dist_pythonconfig_DATA += mongodb/mongodb.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += mongodb/README.md mongodb/Makefile.inc
+
diff --git a/collectors/python.d.plugin/mongodb/README.md b/collectors/python.d.plugin/mongodb/README.md
new file mode 100644
index 000000000..8e5f652c5
--- /dev/null
+++ b/collectors/python.d.plugin/mongodb/README.md
@@ -0,0 +1,141 @@
+# mongodb
+
+Module monitor mongodb performance and health metrics
+
+**Requirements:**
+ * `python-pymongo` package v2.4+.
+
+You need to install it manually.
+
+
+Number of charts depends on mongodb version, storage engine and other features (replication):
+
+1. **Read requests**:
+ * query
+ * getmore (operation the cursor executes to get additional data from query)
+
+2. **Write requests**:
+ * insert
+ * delete
+ * update
+
+3. **Active clients**:
+ * readers (number of clients with read operations in progress or queued)
+ * writers (number of clients with write operations in progress or queued)
+
+4. **Journal transactions**:
+ * commits (count of transactions that have been written to the journal)
+
+5. **Data written to the journal**:
+ * volume (volume of data)
+
+6. **Background flush** (MMAPv1):
+ * average ms (average time taken by flushes to execute)
+ * last ms (time taken by the last flush)
+
+8. **Read tickets** (WiredTiger):
+ * in use (number of read tickets in use)
+ * available (number of available read tickets remaining)
+
+9. **Write tickets** (WiredTiger):
+ * in use (number of write tickets in use)
+ * available (number of available write tickets remaining)
+
+10. **Cursors**:
+ * opened (number of cursors currently opened by MongoDB for clients)
+ * timedOut (number of cursors that have timed)
+ * noTimeout (number of open cursors with timeout disabled)
+
+11. **Connections**:
+ * connected (number of clients currently connected to the database server)
+ * unused (number of unused connections available for new clients)
+
+12. **Memory usage metrics**:
+ * virtual
+ * resident (amount of memory used by the database process)
+ * mapped
+ * non mapped
+
+13. **Page faults**:
+ * page faults (number of times MongoDB had to request from disk)
+
+14. **Cache metrics** (WiredTiger):
+ * percentage of bytes currently in the cache (amount of space taken by cached data)
+ * percantage of tracked dirty bytes in the cache (amount of space taken by dirty data)
+
+15. **Pages evicted from cache** (WiredTiger):
+ * modified
+ * unmodified
+
+16. **Queued requests**:
+ * readers (number of read request currently queued)
+ * writers (number of write request currently queued)
+
+17. **Errors**:
+ * msg (number of message assertions raised)
+ * warning (number of warning assertions raised)
+ * regular (number of regular assertions raised)
+ * user (number of assertions corresponding to errors generated by users)
+
+18. **Storage metrics** (one chart for every database)
+ * dataSize (size of all documents + padding in the database)
+ * indexSize (size of all indexes in the database)
+ * storageSize (size of all extents in the database)
+
+19. **Documents in the database** (one chart for all databases)
+ * documents (number of objects in the database among all the collections)
+
+20. **tcmalloc metrics**
+ * central cache free
+ * current total thread cache
+ * pageheap free
+ * pageheap unmapped
+ * thread cache free
+ * transfer cache free
+ * heap size
+
+21. **Commands total/failed rate**
+ * count
+ * createIndex
+ * delete
+ * eval
+ * findAndModify
+ * insert
+
+22. **Locks metrics** (acquireCount metrics - number of times the lock was acquired in the specified mode)
+ * Global lock
+ * Database lock
+ * Collection lock
+ * Metadata lock
+ * oplog lock
+
+23. **Replica set members state**
+ * state
+
+24. **Oplog window**
+  * window (interval of time between the oldest and the latest entries in the oplog)
+
+25. **Replication lag**
+  * member (time when last entry from the oplog was applied for every member)
+
+26. **Replication set member heartbeat latency**
+  * member (time when last heartbeat was received from replica set member)
+
+
+### configuration
+
+Sample:
+
+```yaml
+local:
+    name : 'local'
+    host : '127.0.0.1'
+    port : 27017
+    user : 'netdata'
+    pass : 'netdata'
+
+```
+
+If no configuration is given, module will attempt to connect to mongodb daemon on `127.0.0.1:27017` address
+
+---
diff --git a/python.d/mongodb.chart.py b/collectors/python.d.plugin/mongodb/mongodb.chart.py
index 909a419da..10344342d 100644
--- a/python.d/mongodb.chart.py
+++ b/collectors/python.d.plugin/mongodb/mongodb.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: mongodb netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from copy import deepcopy
 from datetime import datetime
@@ -31,7 +32,8 @@ REPL_SET_STATES = [
     ('6', 'unknown'),
     ('9', 'rollback'),
     ('10', 'removed'),
-    ('0', 'startup')]
+    ('0', 'startup')
+]
 
 
 def multiply_by_100(value):
@@ -141,12 +143,37 @@ DBSTATS = [
 ]
 
 # charts order (can be overridden if you want less charts, or different order)
-ORDER = ['read_operations', 'write_operations', 'active_clients', 'journaling_transactions',
-         'journaling_volume', 'background_flush_average', 'background_flush_last', 'background_flush_rate',
-         'wiredtiger_read', 'wiredtiger_write', 'cursors', 'connections', 'memory', 'page_faults',
-         'queued_requests', 'record_moves', 'wiredtiger_cache', 'wiredtiger_pages_evicted', 'asserts',
-         'locks_collection', 'locks_database', 'locks_global', 'locks_metadata', 'locks_oplog',
-         'dbstats_objects', 'tcmalloc_generic', 'tcmalloc_metrics', 'command_total_rate', 'command_failed_rate']
+ORDER = [
+    'read_operations',
+    'write_operations',
+    'active_clients',
+    'journaling_transactions',
+    'journaling_volume',
+    'background_flush_average',
+    'background_flush_last',
+    'background_flush_rate',
+    'wiredtiger_read',
+    'wiredtiger_write',
+    'cursors',
+    'connections',
+    'memory',
+    'page_faults',
+    'queued_requests',
+    'record_moves',
+    'wiredtiger_cache',
+    'wiredtiger_pages_evicted',
+    'asserts',
+    'locks_collection',
+    'locks_database',
+    'locks_global',
+    'locks_metadata',
+    'locks_oplog',
+    'dbstats_objects',
+    'tcmalloc_generic',
+    'tcmalloc_metrics',
+    'command_total_rate',
+    'command_failed_rate'
+]
 
 CHARTS = {
     'read_operations': {
@@ -155,7 +182,8 @@ CHARTS = {
         'lines': [
             ['query', None, 'incremental'],
             ['getmore', None, 'incremental']
-        ]},
+        ]
+    },
     'write_operations': {
         'options': [None, 'Received write requests', 'requests/s', 'throughput metrics',
                     'mongodb.write_operations', 'line'],
@@ -163,57 +191,66 @@ CHARTS = {
             ['insert', None, 'incremental'],
             ['update', None, 'incremental'],
             ['delete', None, 'incremental']
-        ]},
+        ]
+    },
     'active_clients': {
         'options': [None, 'Clients with read or write operations in progress or queued', 'clients',
                     'throughput metrics', 'mongodb.active_clients', 'line'],
         'lines': [
             ['activeClients_readers', 'readers', 'absolute'],
             ['activeClients_writers', 'writers', 'absolute']
-        ]},
+        ]
+    },
     'journaling_transactions': {
         'options': [None, 'Transactions that have been written to the journal', 'commits',
                     'database performance', 'mongodb.journaling_transactions', 'line'],
         'lines': [
             ['commits', None, 'absolute']
-        ]},
+        ]
+    },
     'journaling_volume': {
         'options': [None, 'Volume of data written to the journal', 'MB', 'database performance',
                     'mongodb.journaling_volume', 'line'],
         'lines': [
             ['journaledMB', 'volume', 'absolute', 1, 100]
-        ]},
+        ]
+    },
     'background_flush_average': {
         'options': [None, 'Average time taken by flushes to execute', 'ms', 'database performance',
                     'mongodb.background_flush_average', 'line'],
         'lines': [
             ['average_ms', 'time', 'absolute', 1, 100]
-        ]},
+        ]
+    },
     'background_flush_last': {
         'options': [None, 'Time taken by the last flush operation to execute', 'ms', 'database performance',
                     'mongodb.background_flush_last', 'line'],
         'lines': [
             ['last_ms', 'time', 'absolute', 1, 100]
-        ]},
+        ]
+    },
     'background_flush_rate': {
         'options': [None, 'Flushes rate', 'flushes', 'database performance', 'mongodb.background_flush_rate', 'line'],
         'lines': [
             ['flushes', 'flushes', 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'wiredtiger_read': {
         'options': [None, 'Read tickets in use and remaining', 'tickets', 'database performance',
                     'mongodb.wiredtiger_read', 'stacked'],
         'lines': [
             ['wiredTigerRead_available', 'available', 'absolute', 1, 1],
             ['wiredTigerRead_out', 'inuse', 'absolute', 1, 1]
-        ]},
+        ]
+    },
     'wiredtiger_write': {
         'options': [None, 'Write tickets in use and remaining', 'tickets', 'database performance',
                     'mongodb.wiredtiger_write', 'stacked'],
         'lines': [
             ['wiredTigerWrite_available', 'available', 'absolute', 1, 1],
             ['wiredTigerWrite_out', 'inuse', 'absolute', 1, 1]
-        ]},
+        ]
+    },
     'cursors': {
         'options': [None, 'Currently openned cursors, cursors with timeout disabled and timed out cursors',
                     'cursors', 'database performance', 'mongodb.cursors', 'stacked'],
@@ -221,14 +258,16 @@ CHARTS = {
             ['cursor_total', 'openned', 'absolute', 1, 1],
             ['noTimeout', None, 'absolute', 1, 1],
             ['timedOut', None, 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'connections': {
         'options': [None, 'Currently connected clients and unused connections', 'connections',
                     'resource utilization', 'mongodb.connections', 'stacked'],
         'lines': [
             ['connections_available', 'unused', 'absolute', 1, 1],
             ['connections_current', 'connected', 'absolute', 1, 1]
-        ]},
+        ]
+    },
     'memory': {
         'options': [None, 'Memory metrics', 'MB', 'resource utilization', 'mongodb.memory', 'stacked'],
         'lines': [
@@ -236,60 +275,70 @@ CHARTS = {
             ['resident', None, 'absolute', 1, 1],
             ['nonmapped', None, 'absolute', 1, 1],
             ['mapped', None, 'absolute', 1, 1]
-        ]},
+        ]
+    },
     'page_faults': {
         'options': [None, 'Number of times MongoDB had to fetch data from disk', 'request/s',
                     'resource utilization', 'mongodb.page_faults', 'line'],
         'lines': [
             ['page_faults', None, 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'queued_requests': {
-        'options': [None, 'Currently queued read and wrire requests', 'requests', 'resource saturation',
+        'options': [None, 'Currently queued read and write requests', 'requests', 'resource saturation',
                     'mongodb.queued_requests', 'line'],
         'lines': [
             ['currentQueue_readers', 'readers', 'absolute', 1, 1],
             ['currentQueue_writers', 'writers', 'absolute', 1, 1]
-        ]},
+        ]
+    },
     'record_moves': {
         'options': [None, 'Number of times documents had to be moved on-disk', 'number',
                     'resource saturation', 'mongodb.record_moves', 'line'],
         'lines': [
             ['moves', None, 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'asserts': {
-        'options': [None, 'Number of message, warning, regular, corresponding to errors generated'
-                          ' by users assertions raised', 'number', 'errors (asserts)', 'mongodb.asserts', 'line'],
+        'options': [
+            None,
+            'Number of message, warning, regular, corresponding to errors generated by users assertions raised',
+            'number', 'errors (asserts)', 'mongodb.asserts', 'line'],
         'lines': [
             ['msg', None, 'incremental', 1, 1],
             ['warning', None, 'incremental', 1, 1],
             ['regular', None, 'incremental', 1, 1],
             ['user', None, 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'wiredtiger_cache': {
         'options': [None, 'The percentage of the wiredTiger cache that is in use and cache with dirty bytes',
                     'percent', 'resource utilization', 'mongodb.wiredtiger_cache', 'stacked'],
         'lines': [
             ['wiredTiger_percent_clean', 'inuse', 'absolute', 1, 1000],
             ['wiredTiger_percent_dirty', 'dirty', 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'wiredtiger_pages_evicted': {
         'options': [None, 'Pages evicted from the cache',
                     'pages', 'resource utilization', 'mongodb.wiredtiger_pages_evicted', 'stacked'],
         'lines': [
             ['unmodified', None, 'absolute', 1, 1],
             ['modified', None, 'absolute', 1, 1]
-        ]},
+        ]
+    },
     'dbstats_objects': {
         'options': [None, 'Number of documents in the database among all the collections', 'documents',
                     'storage size metrics', 'mongodb.dbstats_objects', 'stacked'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'tcmalloc_generic': {
         'options': [None, 'Tcmalloc generic metrics', 'MB', 'tcmalloc', 'mongodb.tcmalloc_generic', 'stacked'],
         'lines': [
             ['current_allocated_bytes', 'allocated', 'absolute', 1, 1048576],
             ['heap_size', 'heap_size', 'absolute', 1, 1048576]
-        ]},
+        ]
+    },
     'tcmalloc_metrics': {
         'options': [None, 'Tcmalloc metrics', 'KB', 'tcmalloc', 'mongodb.tcmalloc_metrics', 'stacked'],
         'lines': [
@@ -299,7 +348,8 @@ CHARTS = {
             ['pageheap_unmapped_bytes', 'pageheap_unmapped', 'absolute', 1, 1024],
             ['thread_cache_free_bytes', 'thread_cache_free', 'absolute', 1, 1024],
             ['transfer_cache_free_bytes', 'transfer_cache_free', 'absolute', 1, 1024]
-        ]},
+        ]
+    },
     'command_total_rate': {
         'options': [None, 'Commands total rate', 'commands/s', 'commands', 'mongodb.command_total_rate', 'stacked'],
         'lines': [
@@ -310,7 +360,8 @@ CHARTS = {
             ['findAndModify_total', 'findAndModify', 'incremental', 1, 1],
             ['insert_total', 'insert', 'incremental', 1, 1],
             ['update_total', 'update', 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'command_failed_rate': {
         'options': [None, 'Commands failed rate', 'commands/s', 'commands', 'mongodb.command_failed_rate', 'stacked'],
         'lines': [
@@ -321,7 +372,8 @@ CHARTS = {
             ['findAndModify_failed', 'findAndModify', 'incremental', 1, 1],
             ['insert_failed', 'insert', 'incremental', 1, 1],
             ['update_failed', 'update', 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'locks_collection': {
         'options': [None, 'Collection lock. Number of times the lock was acquired in the specified mode',
                     'locks', 'locks metrics', 'mongodb.locks_collection', 'stacked'],
@@ -330,7 +382,8 @@ CHARTS = {
             ['Collection_W', 'exclusive', 'incremental'],
             ['Collection_r', 'intent_shared', 'incremental'],
             ['Collection_w', 'intent_exclusive', 'incremental']
-        ]},
+        ]
+    },
     'locks_database': {
         'options': [None, 'Database lock. Number of times the lock was acquired in the specified mode',
                     'locks', 'locks metrics', 'mongodb.locks_database', 'stacked'],
@@ -339,7 +392,8 @@ CHARTS = {
             ['Database_W', 'exclusive', 'incremental'],
             ['Database_r', 'intent_shared', 'incremental'],
             ['Database_w', 'intent_exclusive', 'incremental']
-        ]},
+        ]
+    },
     'locks_global': {
         'options': [None, 'Global lock. Number of times the lock was acquired in the specified mode',
                     'locks', 'locks metrics', 'mongodb.locks_global', 'stacked'],
@@ -348,21 +402,24 @@ CHARTS = {
             ['Global_W', 'exclusive', 'incremental'],
             ['Global_r', 'intent_shared', 'incremental'],
             ['Global_w', 'intent_exclusive', 'incremental']
-        ]},
+        ]
+    },
     'locks_metadata': {
         'options': [None, 'Metadata lock. Number of times the lock was acquired in the specified mode',
                     'locks', 'locks metrics', 'mongodb.locks_metadata', 'stacked'],
         'lines': [
             ['Metadata_R', 'shared', 'incremental'],
             ['Metadata_w', 'intent_exclusive', 'incremental']
-        ]},
+        ]
+    },
     'locks_oplog': {
         'options': [None, 'Lock on the oplog. Number of times the lock was acquired in the specified mode',
                     'locks', 'locks metrics', 'mongodb.locks_oplog', 'stacked'],
         'lines': [
             ['oplog_r', 'intent_shared', 'incremental'],
             ['oplog_w', 'intent_exclusive', 'incremental']
-        ]}
+        ]
+    }
 }
 
 
@@ -383,7 +440,7 @@ class Service(SimpleService):
 
     def check(self):
         if not PYMONGO:
-            self.error('Pymongo module is needed to use mongodb.chart.py')
+            self.error('Pymongo package v2.4+ is needed to use mongodb.chart.py')
             return False
         self.connection, server_status, error = self._create_connection()
         if error:
@@ -491,9 +548,10 @@ class Service(SimpleService):
             # Create "heartbeat delay" chart
             self.order.append('heartbeat_delay')
             self.definitions['heartbeat_delay'] = {
-                'options': [None, 'Time when last heartbeat was received'
-                                  ' from the replica set member (lastHeartbeatRecv)',
-                            'seconds ago', 'replication and oplog', 'mongodb.replication_heartbeat_delay', 'stacked'],
+                'options': [
+                    None,
+                    'Time when last heartbeat was received from the replica set member (lastHeartbeatRecv)',
+                    'seconds ago', 'replication and oplog', 'mongodb.replication_heartbeat_delay', 'stacked'],
                 'lines': create_lines(other_hosts, 'heartbeat_lag')}
             # Create "optimedate delay" chart
             self.order.append('optimedate_delay')
@@ -561,9 +619,9 @@ class Service(SimpleService):
         raw_data['getReplicationInfo'] = dict()
         try:
             raw_data['getReplicationInfo']['ASCENDING'] = self.connection.local.oplog.rs.find().sort(
-                "$natural", ASCENDING).limit(1)[0]
+                '$natural', ASCENDING).limit(1)[0]
             raw_data['getReplicationInfo']['DESCENDING'] = self.connection.local.oplog.rs.find().sort(
-                "$natural", DESCENDING).limit(1)[0]
+                '$natural', DESCENDING).limit(1)[0]
             return raw_data
         except PyMongoError:
             return None
diff --git a/conf.d/python.d/mongodb.conf b/collectors/python.d.plugin/mongodb/mongodb.conf
index 62faef68d..62faef68d 100644
--- a/conf.d/python.d/mongodb.conf
+++ b/collectors/python.d.plugin/mongodb/mongodb.conf
diff --git a/collectors/python.d.plugin/monit/Makefile.inc b/collectors/python.d.plugin/monit/Makefile.inc
new file mode 100644
index 000000000..4a3673fd5
--- /dev/null
+++ b/collectors/python.d.plugin/monit/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += monit/monit.chart.py
+dist_pythonconfig_DATA += monit/monit.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += monit/README.md monit/Makefile.inc
+
diff --git a/collectors/python.d.plugin/monit/README.md b/collectors/python.d.plugin/monit/README.md
new file mode 100644
index 000000000..6d10240c9
--- /dev/null
+++ b/collectors/python.d.plugin/monit/README.md
@@ -0,0 +1,33 @@
+# monit
+
+Monit monitoring module. Data is grabbed from stats XML interface (exists for a long time, but not mentioned in official documentation). Mostly this plugin shows statuses of monit targets, i.e. [statuses of specified checks](https://mmonit.com/monit/documentation/monit.html#Service-checks).
+
+1. **Filesystems**
+ * Filesystems
+ * Directories
+ * Files
+ * Pipes
+
+2. **Applications**
+ * Processes (+threads/childs)
+ * Programs
+
+3. **Network**
+ * Hosts (+latency)
+ * Network interfaces
+
+### configuration
+
+Sample:
+
+```yaml
+local:
+  name     : 'local'
+  url     : 'http://localhost:2812'
+  user:    : admin
+  pass:    : monit
+```
+
+If no configuration is given, module will attempt to connect to monit as `http://localhost:2812`.
+
+---
diff --git a/collectors/python.d.plugin/monit/monit.chart.py b/collectors/python.d.plugin/monit/monit.chart.py
new file mode 100644
index 000000000..51943c0e1
--- /dev/null
+++ b/collectors/python.d.plugin/monit/monit.chart.py
@@ -0,0 +1,166 @@
+# -*- coding: utf-8 -*-
+# Description: monit netdata python.d module
+# Author: Evgeniy K. (n0guest)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import xml.etree.ElementTree as ET
+from bases.FrameworkServices.UrlService import UrlService
+
+# default module values (can be overridden per job in `config`)
+# update_every = 2
+priority = 60000
+retries = 60
+
+# see enum State_Type from monit.h (https://bitbucket.org/tildeslash/monit/src/master/src/monit.h)
+MONIT_SERVICE_NAMES = ['Filesystem', 'Directory', 'File', 'Process', 'Host', 'System', 'Fifo', 'Program', 'Net']
+DEFAULT_SERVICES_IDS = [0, 1, 2, 3, 4, 6, 7, 8]
+
+# charts order (can be overridden if you want less charts, or different order)
+ORDER = [
+    'filesystem',
+    'directory',
+    'file',
+    'process',
+    'process_uptime',
+    'process_threads',
+    'process_children',
+    'host',
+    'host_latency',
+    'system',
+    'fifo',
+    'program',
+    'net'
+]
+CHARTS = {
+    'filesystem': {
+        'options': ['filesystems', 'Filesystems', 'filesystems', 'filesystem', 'monit.filesystems', 'line'],
+        'lines': []
+    },
+    'directory': {
+        'options': ['directories', 'Directories', 'directories', 'filesystem', 'monit.directories', 'line'],
+        'lines': []
+    },
+    'file': {
+        'options': ['files', 'Files', 'files', 'filesystem', 'monit.files', 'line'],
+        'lines': []
+    },
+    'fifo': {
+        'options': ['fifos', 'Pipes (fifo)', 'pipes', 'filesystem', 'monit.fifos', 'line'],
+        'lines': []
+    },
+    'program': {
+        'options': ['programs', 'Programs statuses', 'programs', 'applications', 'monit.programs', 'line'],
+        'lines': []
+    },
+    'process': {
+        'options': ['processes', 'Processes statuses', 'processes', 'applications', 'monit.services', 'line'],
+        'lines': []
+    },
+    'process_uptime': {
+        'options': ['processes uptime', 'Processes uptime', 'seconds', 'applications',
+                    'monit.process_uptime', 'line', 'hidden'],
+        'lines': []
+    },
+    'process_threads': {
+        'options': ['processes threads', 'Processes threads', 'threads', 'applications',
+                    'monit.process_threads', 'line'],
+        'lines': []
+    },
+    'process_children': {
+        'options': ['processes childrens', 'Child processes', 'childrens', 'applications',
+                    'monit.process_childrens', 'line'],
+        'lines': []
+    },
+    'host': {
+        'options': ['hosts', 'Hosts', 'hosts', 'network', 'monit.hosts', 'line'],
+        'lines': []
+    },
+    'host_latency': {
+        'options': ['hosts latency', 'Hosts latency', 'milliseconds/s', 'network', 'monit.host_latency', 'line'],
+        'lines': []
+    },
+    'net': {
+        'options': ['interfaces', 'Network interfaces and addresses', 'interfaces', 'network',
+                    'monit.networks', 'line'],
+        'lines': []
+    },
+}
+
+
+class Service(UrlService):
+    def __init__(self, configuration=None, name=None):
+        UrlService.__init__(self, configuration=configuration, name=name)
+        base_url = self.configuration.get('url', 'http://localhost:2812')
+        self.url = '{0}/_status?format=xml&level=full'.format(base_url)
+        self.order = ORDER
+        self.definitions = CHARTS
+
+    def parse(self, data):
+        try:
+            xml = ET.fromstring(data)
+        except ET.ParseError:
+            self.error("URL {0} didn't return a vaild XML page. Please check your settings.".format(self.url))
+            return None
+        return xml
+
+    def check(self):
+        self._manager = self._build_manager()
+        raw_data = self._get_raw_data()
+        if not raw_data:
+            return None
+        return bool(self.parse(raw_data))
+
+    def _get_data(self):
+        raw_data = self._get_raw_data()
+        if not raw_data:
+            return None
+        xml = self.parse(raw_data)
+        if not xml:
+            return None
+
+        data = {}
+        for service_id in DEFAULT_SERVICES_IDS:
+            service_category = MONIT_SERVICE_NAMES[service_id].lower()
+            if service_category == 'system':
+                self.debug("Skipping service from 'System' category, because it's useless in graphs")
+                continue
+
+            xpath_query = "./service[@type='{0}']".format(service_id)
+            self.debug('Searching for {0} as {1}'.format(service_category, xpath_query))
+            for service_node in xml.findall(xpath_query):
+
+                service_name = service_node.find('name').text
+                service_status = service_node.find('status').text
+                service_monitoring = service_node.find('monitor').text
+                self.debug('=> found {0} with type={1}, status={2}, monitoring={3}'.format(service_name,
+                           service_id, service_status, service_monitoring))
+
+                dimension_key = service_category + '_' + service_name
+                if dimension_key not in self.charts[service_category]:
+                    self.charts[service_category].add_dimension([dimension_key, service_name, 'absolute'])
+                data[dimension_key] = 1 if service_status == '0' and service_monitoring == '1' else 0
+
+                if service_category == 'process':
+                    for subnode in ('uptime', 'threads', 'children'):
+                        subnode_value = service_node.find(subnode)
+                        if subnode_value is None:
+                            continue
+                        if subnode == 'uptime' and int(subnode_value.text) < 0:
+                            self.debug('Skipping bugged metrics with negative uptime (monit before v5.16')
+                            continue
+                        dimension_key = 'process_{0}_{1}'.format(subnode, service_name)
+                        if dimension_key not in self.charts['process_' + subnode]:
+                            self.charts['process_' + subnode].add_dimension([dimension_key, service_name, 'absolute'])
+                        data[dimension_key] = int(subnode_value.text)
+
+                if service_category == 'host':
+                    subnode_value = service_node.find('./icmp/responsetime')
+                    if subnode_value is None:
+                        continue
+                    dimension_key = 'host_latency_{0}'.format(service_name)
+                    if dimension_key not in self.charts['host_latency']:
+                        self.charts['host_latency'].add_dimension([dimension_key, service_name,
+                                                                   'absolute', 1000, 1000000])
+                    data[dimension_key] = float(subnode_value.text) * 1000000
+
+        return data or None
diff --git a/collectors/python.d.plugin/monit/monit.conf b/collectors/python.d.plugin/monit/monit.conf
new file mode 100644
index 000000000..f9c26dbc3
--- /dev/null
+++ b/collectors/python.d.plugin/monit/monit.conf
@@ -0,0 +1,88 @@
+# netdata python.d.plugin configuration for monit
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# Additionally to the above, this plugin also supports the following:
+#
+#     url: 'URL'       # the URL to fetch monit's status stats
+#
+# if the URL is password protected, the following are supported:
+#
+#     user: 'username'
+#     pass: 'password'
+#
+# Example
+#
+# local:
+#     name : 'Local Monit'
+#     url  : 'http://localhost:2812'
+#
+# "local" will show up in Netdata logs. "Reverse Proxy" will show up in the menu
+# in the monit section.
+
+# ----------------------------------------------------------------------
+# AUTO-DETECTION JOBS
+# only one of them will run (they have the same name)
+
+localhost:
+  name : 'local'
+  url  : 'http://localhost:2812'
diff --git a/collectors/python.d.plugin/mysql/Makefile.inc b/collectors/python.d.plugin/mysql/Makefile.inc
new file mode 100644
index 000000000..03e8b65eb
--- /dev/null
+++ b/collectors/python.d.plugin/mysql/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += mysql/mysql.chart.py
+dist_pythonconfig_DATA += mysql/mysql.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += mysql/README.md mysql/Makefile.inc
+
diff --git a/collectors/python.d.plugin/mysql/README.md b/collectors/python.d.plugin/mysql/README.md
new file mode 100644
index 000000000..e38098e7e
--- /dev/null
+++ b/collectors/python.d.plugin/mysql/README.md
@@ -0,0 +1,90 @@
+# mysql
+
+Module monitors one or more mysql servers
+
+**Requirements:**
+ * python library [MySQLdb](https://github.com/PyMySQL/mysqlclient-python) (faster) or [PyMySQL](https://github.com/PyMySQL/PyMySQL) (slower)
+
+It will produce following charts (if data is available):
+
+1. **Bandwidth** in kbps
+ * in
+ * out
+
+2. **Queries** in queries/sec
+ * queries
+ * questions
+ * slow queries
+
+3. **Operations** in operations/sec
+ * opened tables
+ * flush
+ * commit
+ * delete
+ * prepare
+ * read first
+ * read key
+ * read next
+ * read prev
+ * read random
+ * read random next
+ * rollback
+ * save point
+ * update
+ * write
+
+4. **Table Locks** in locks/sec
+ * immediate
+ * waited
+
+5. **Select Issues** in issues/sec
+ * full join
+ * full range join
+ * range
+ * range check
+ * scan
+
+6. **Sort Issues** in issues/sec
+ * merge passes
+ * range
+ * scan
+
+### configuration
+
+You can provide, per server, the following:
+
+1. username which have access to database (defaults to 'root')
+2. password (defaults to none)
+3. mysql my.cnf configuration file
+4. mysql socket (optional)
+5. mysql host (ip or hostname)
+6. mysql port (defaults to 3306)
+
+Here is an example for 3 servers:
+
+```yaml
+update_every : 10
+priority     : 90100
+retries      : 5
+
+local:
+  'my.cnf'   : '/etc/mysql/my.cnf'
+  priority   : 90000
+
+local_2:
+  user     : 'root'
+  pass : 'blablablabla'
+  socket   : '/var/run/mysqld/mysqld.sock'
+  update_every : 1
+
+remote:
+  user     : 'admin'
+  pass : 'bla'
+  host     : 'example.org'
+  port     : 9000
+  retries  : 20
+```
+
+If no configuration is given, module will attempt to connect to mysql server via unix socket at `/var/run/mysqld/mysqld.sock` without password and with username `root`
+
+---
diff --git a/python.d/mysql.chart.py b/collectors/python.d.plugin/mysql/mysql.chart.py
index 4c7058b26..c4d1e8b3a 100644
--- a/python.d/mysql.chart.py
+++ b/collectors/python.d.plugin/mysql/mysql.chart.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 # Description: MySQL netdata python.d module
 # Author: Pawel Krupa (paulfantom)
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.FrameworkServices.MySQLService import MySQLService
 
@@ -12,118 +14,127 @@ retries = 60
 # query executed on MySQL server
 QUERY_GLOBAL = 'SHOW GLOBAL STATUS;'
 QUERY_SLAVE = 'SHOW SLAVE STATUS;'
+QUERY_VARIABLES = 'SHOW GLOBAL VARIABLES LIKE \'max_connections\';'
 
 GLOBAL_STATS = [
- 'Bytes_received',
- 'Bytes_sent',
- 'Queries',
- 'Questions',
- 'Slow_queries',
- 'Handler_commit',
- 'Handler_delete',
- 'Handler_prepare',
- 'Handler_read_first',
- 'Handler_read_key',
- 'Handler_read_next',
- 'Handler_read_prev',
- 'Handler_read_rnd',
- 'Handler_read_rnd_next',
- 'Handler_rollback',
- 'Handler_savepoint',
- 'Handler_savepoint_rollback',
- 'Handler_update',
- 'Handler_write',
- 'Table_locks_immediate',
- 'Table_locks_waited',
- 'Select_full_join',
- 'Select_full_range_join',
- 'Select_range',
- 'Select_range_check',
- 'Select_scan',
- 'Sort_merge_passes',
- 'Sort_range',
- 'Sort_scan',
- 'Created_tmp_disk_tables',
- 'Created_tmp_files',
- 'Created_tmp_tables',
- 'Connections',
- 'Aborted_connects',
- 'Binlog_cache_disk_use',
- 'Binlog_cache_use',
- 'Threads_connected',
- 'Threads_created',
- 'Threads_cached',
- 'Threads_running',
- 'Thread_cache_misses',
- 'Innodb_data_read',
- 'Innodb_data_written',
- 'Innodb_data_reads',
- 'Innodb_data_writes',
- 'Innodb_data_fsyncs',
- 'Innodb_data_pending_reads',
- 'Innodb_data_pending_writes',
- 'Innodb_data_pending_fsyncs',
- 'Innodb_log_waits',
- 'Innodb_log_write_requests',
- 'Innodb_log_writes',
- 'Innodb_os_log_fsyncs',
- 'Innodb_os_log_pending_fsyncs',
- 'Innodb_os_log_pending_writes',
- 'Innodb_os_log_written',
- 'Innodb_row_lock_current_waits',
- 'Innodb_rows_inserted',
- 'Innodb_rows_read',
- 'Innodb_rows_updated',
- 'Innodb_rows_deleted',
- 'Innodb_buffer_pool_pages_data',
- 'Innodb_buffer_pool_pages_dirty',
- 'Innodb_buffer_pool_pages_free',
- 'Innodb_buffer_pool_pages_flushed',
- 'Innodb_buffer_pool_pages_misc',
- 'Innodb_buffer_pool_pages_total',
- 'Innodb_buffer_pool_bytes_data',
- 'Innodb_buffer_pool_bytes_dirty',
- 'Innodb_buffer_pool_read_ahead',
- 'Innodb_buffer_pool_read_ahead_evicted',
- 'Innodb_buffer_pool_read_ahead_rnd',
- 'Innodb_buffer_pool_read_requests',
- 'Innodb_buffer_pool_write_requests',
- 'Innodb_buffer_pool_reads',
- 'Innodb_buffer_pool_wait_free',
- 'Qcache_hits',
- 'Qcache_lowmem_prunes',
- 'Qcache_inserts',
- 'Qcache_not_cached',
- 'Qcache_queries_in_cache',
- 'Qcache_free_memory',
- 'Qcache_free_blocks',
- 'Qcache_total_blocks',
- 'Key_blocks_unused',
- 'Key_blocks_used',
- 'Key_blocks_not_flushed',
- 'Key_read_requests',
- 'Key_write_requests',
- 'Key_reads',
- 'Key_writes',
- 'Open_files',
- 'Opened_files',
- 'Binlog_stmt_cache_disk_use',
- 'Binlog_stmt_cache_use',
- 'Connection_errors_accept',
- 'Connection_errors_internal',
- 'Connection_errors_max_connections',
- 'Connection_errors_peer_address',
- 'Connection_errors_select',
- 'Connection_errors_tcpwrap',
- 'wsrep_local_recv_queue',
- 'wsrep_local_send_queue',
- 'wsrep_received',
- 'wsrep_replicated',
- 'wsrep_received_bytes',
- 'wsrep_replicated_bytes',
- 'wsrep_local_bf_aborts',
- 'wsrep_local_cert_failures',
- 'wsrep_flow_control_paused_ns']
+    'Bytes_received',
+    'Bytes_sent',
+    'Queries',
+    'Questions',
+    'Slow_queries',
+    'Handler_commit',
+    'Handler_delete',
+    'Handler_prepare',
+    'Handler_read_first',
+    'Handler_read_key',
+    'Handler_read_next',
+    'Handler_read_prev',
+    'Handler_read_rnd',
+    'Handler_read_rnd_next',
+    'Handler_rollback',
+    'Handler_savepoint',
+    'Handler_savepoint_rollback',
+    'Handler_update',
+    'Handler_write',
+    'Table_locks_immediate',
+    'Table_locks_waited',
+    'Select_full_join',
+    'Select_full_range_join',
+    'Select_range',
+    'Select_range_check',
+    'Select_scan',
+    'Sort_merge_passes',
+    'Sort_range',
+    'Sort_scan',
+    'Created_tmp_disk_tables',
+    'Created_tmp_files',
+    'Created_tmp_tables',
+    'Connections',
+    'Aborted_connects',
+    'Max_used_connections',
+    'Binlog_cache_disk_use',
+    'Binlog_cache_use',
+    'Threads_connected',
+    'Threads_created',
+    'Threads_cached',
+    'Threads_running',
+    'Thread_cache_misses',
+    'Innodb_data_read',
+    'Innodb_data_written',
+    'Innodb_data_reads',
+    'Innodb_data_writes',
+    'Innodb_data_fsyncs',
+    'Innodb_data_pending_reads',
+    'Innodb_data_pending_writes',
+    'Innodb_data_pending_fsyncs',
+    'Innodb_log_waits',
+    'Innodb_log_write_requests',
+    'Innodb_log_writes',
+    'Innodb_os_log_fsyncs',
+    'Innodb_os_log_pending_fsyncs',
+    'Innodb_os_log_pending_writes',
+    'Innodb_os_log_written',
+    'Innodb_row_lock_current_waits',
+    'Innodb_rows_inserted',
+    'Innodb_rows_read',
+    'Innodb_rows_updated',
+    'Innodb_rows_deleted',
+    'Innodb_buffer_pool_pages_data',
+    'Innodb_buffer_pool_pages_dirty',
+    'Innodb_buffer_pool_pages_free',
+    'Innodb_buffer_pool_pages_flushed',
+    'Innodb_buffer_pool_pages_misc',
+    'Innodb_buffer_pool_pages_total',
+    'Innodb_buffer_pool_bytes_data',
+    'Innodb_buffer_pool_bytes_dirty',
+    'Innodb_buffer_pool_read_ahead',
+    'Innodb_buffer_pool_read_ahead_evicted',
+    'Innodb_buffer_pool_read_ahead_rnd',
+    'Innodb_buffer_pool_read_requests',
+    'Innodb_buffer_pool_write_requests',
+    'Innodb_buffer_pool_reads',
+    'Innodb_buffer_pool_wait_free',
+    'Qcache_hits',
+    'Qcache_lowmem_prunes',
+    'Qcache_inserts',
+    'Qcache_not_cached',
+    'Qcache_queries_in_cache',
+    'Qcache_free_memory',
+    'Qcache_free_blocks',
+    'Qcache_total_blocks',
+    'Key_blocks_unused',
+    'Key_blocks_used',
+    'Key_blocks_not_flushed',
+    'Key_read_requests',
+    'Key_write_requests',
+    'Key_reads',
+    'Key_writes',
+    'Open_files',
+    'Opened_files',
+    'Binlog_stmt_cache_disk_use',
+    'Binlog_stmt_cache_use',
+    'Connection_errors_accept',
+    'Connection_errors_internal',
+    'Connection_errors_max_connections',
+    'Connection_errors_peer_address',
+    'Connection_errors_select',
+    'Connection_errors_tcpwrap',
+    'wsrep_local_recv_queue',
+    'wsrep_local_send_queue',
+    'wsrep_received',
+    'wsrep_replicated',
+    'wsrep_received_bytes',
+    'wsrep_replicated_bytes',
+    'wsrep_local_bf_aborts',
+    'wsrep_local_cert_failures',
+    'wsrep_flow_control_paused_ns',
+    'Com_delete',
+    'Com_insert',
+    'Com_select',
+    'Com_update',
+    'Com_replace'
+]
+
 
 def slave_seconds(value):
     try:
@@ -142,22 +153,56 @@ SLAVE_STATS = [
     ('Slave_IO_Running', slave_running)
 ]
 
-ORDER = ['net',
-         'queries',
-         'handlers',
-         'table_locks',
-         'join_issues', 'sort_issues',
-         'tmp',
-         'connections', 'connection_errors',
-         'binlog_cache', 'binlog_stmt_cache',
-         'threads', 'thread_cache_misses',
-         'innodb_io', 'innodb_io_ops', 'innodb_io_pending_ops', 'innodb_log', 'innodb_os_log', 'innodb_os_log_io',
-         'innodb_cur_row_lock', 'innodb_rows', 'innodb_buffer_pool_pages', 'innodb_buffer_pool_bytes',
-         'innodb_buffer_pool_read_ahead', 'innodb_buffer_pool_reqs', 'innodb_buffer_pool_ops',
-         'qcache_ops', 'qcache', 'qcache_freemem', 'qcache_memblocks',
-         'key_blocks', 'key_requests', 'key_disk_ops',
-         'files', 'files_rate', 'slave_behind', 'slave_status',
-         'galera_writesets', 'galera_bytes', 'galera_queue', 'galera_conflicts', 'galera_flow_control']
+VARIABLES = [
+    'max_connections'
+]
+
+ORDER = [
+    'net',
+    'queries',
+    'queries_type',
+    'handlers',
+    'table_locks',
+    'join_issues',
+    'sort_issues',
+    'tmp',
+    'connections',
+    'connections_active',
+    'connection_errors',
+    'binlog_cache',
+    'binlog_stmt_cache',
+    'threads',
+    'thread_cache_misses',
+    'innodb_io',
+    'innodb_io_ops',
+    'innodb_io_pending_ops',
+    'innodb_log',
+    'innodb_os_log',
+    'innodb_os_log_io',
+    'innodb_cur_row_lock',
+    'innodb_rows',
+    'innodb_buffer_pool_pages',
+    'innodb_buffer_pool_bytes',
+    'innodb_buffer_pool_read_ahead',
+    'innodb_buffer_pool_reqs',
+    'innodb_buffer_pool_ops',
+    'qcache_ops',
+    'qcache',
+    'qcache_freemem',
+    'qcache_memblocks',
+    'key_blocks',
+    'key_requests',
+    'key_disk_ops',
+    'files',
+    'files_rate',
+    'slave_behind',
+    'slave_status',
+    'galera_writesets',
+    'galera_bytes',
+    'galera_queue',
+    'galera_conflicts',
+    'galera_flow_control'
+]
 
 CHARTS = {
     'net': {
@@ -165,14 +210,27 @@ CHARTS = {
         'lines': [
             ['Bytes_received', 'in', 'incremental', 8, 1024],
             ['Bytes_sent', 'out', 'incremental', -8, 1024]
-        ]},
+        ]
+    },
     'queries': {
         'options': [None, 'mysql Queries', 'queries/s', 'queries', 'mysql.queries', 'line'],
         'lines': [
             ['Queries', 'queries', 'incremental'],
             ['Questions', 'questions', 'incremental'],
             ['Slow_queries', 'slow_queries', 'incremental']
-        ]},
+        ]
+    },
+    'queries_type': {
+        'options': [None, 'mysql Query type', 'queries/s', 'query_types', 'mysql.queries_type', 'stacked'],
+        'lines': [
+            ['Com_select', 'select', 'incremental'],
+            ['Com_delete', 'delete', 'incremental'],
+            ['Com_update', 'update', 'incremental'],
+            ['Com_insert', 'insert', 'incremental'],
+            ['Qcache_hits', 'cache_hits', 'incremental'],
+            ['Com_replace', 'replace', 'incremental']
+        ]
+    },
     'handlers': {
         'options': [None, 'mysql Handlers', 'handlers/s', 'handlers', 'mysql.handlers', 'line'],
         'lines': [
@@ -190,13 +248,15 @@ CHARTS = {
             ['Handler_savepoint_rollback', 'savepoint_rollback', 'incremental'],
             ['Handler_update', 'update', 'incremental'],
             ['Handler_write', 'write', 'incremental']
-        ]},
+        ]
+    },
     'table_locks': {
         'options': [None, 'mysql Tables Locks', 'locks/s', 'locks', 'mysql.table_locks', 'line'],
         'lines': [
             ['Table_locks_immediate', 'immediate', 'incremental'],
             ['Table_locks_waited', 'waited', 'incremental', -1, 1]
-        ]},
+        ]
+    },
     'join_issues': {
         'options': [None, 'mysql Select Join Issues', 'joins/s', 'issues', 'mysql.join_issues', 'line'],
         'lines': [
@@ -205,33 +265,46 @@ CHARTS = {
             ['Select_range', 'range', 'incremental'],
             ['Select_range_check', 'range_check', 'incremental'],
             ['Select_scan', 'scan', 'incremental']
-        ]},
+        ]
+    },
     'sort_issues': {
         'options': [None, 'mysql Sort Issues', 'issues/s', 'issues', 'mysql.sort_issues', 'line'],
         'lines': [
             ['Sort_merge_passes', 'merge_passes', 'incremental'],
             ['Sort_range', 'range', 'incremental'],
             ['Sort_scan', 'scan', 'incremental']
-        ]},
+        ]
+    },
     'tmp': {
         'options': [None, 'mysql Tmp Operations', 'counter', 'temporaries', 'mysql.tmp', 'line'],
         'lines': [
             ['Created_tmp_disk_tables', 'disk_tables', 'incremental'],
             ['Created_tmp_files', 'files', 'incremental'],
             ['Created_tmp_tables', 'tables', 'incremental']
-        ]},
+        ]
+    },
     'connections': {
         'options': [None, 'mysql Connections', 'connections/s', 'connections', 'mysql.connections', 'line'],
         'lines': [
             ['Connections', 'all', 'incremental'],
             ['Aborted_connects', 'aborted', 'incremental']
-        ]},
+        ]
+    },
+    'connections_active': {
+        'options': [None, 'mysql Connections Active', 'connections', 'connections', 'mysql.connections_active', 'line'],
+        'lines': [
+            ['Threads_connected', 'active', 'absolute'],
+            ['max_connections', 'limit', 'absolute'],
+            ['Max_used_connections', 'max_active', 'absolute']
+        ]
+    },
     'binlog_cache': {
         'options': [None, 'mysql Binlog Cache', 'transactions/s', 'binlog', 'mysql.binlog_cache', 'line'],
         'lines': [
             ['Binlog_cache_disk_use', 'disk', 'incremental'],
             ['Binlog_cache_use', 'all', 'incremental']
-        ]},
+        ]
+    },
     'threads': {
         'options': [None, 'mysql Threads', 'threads', 'threads', 'mysql.threads', 'line'],
         'lines': [
@@ -239,25 +312,29 @@ CHARTS = {
             ['Threads_created', 'created', 'incremental'],
             ['Threads_cached', 'cached', 'absolute', -1, 1],
             ['Threads_running', 'running', 'absolute'],
-        ]},
+        ]
+    },
     'thread_cache_misses': {
         'options': [None, 'mysql Threads Cache Misses', 'misses', 'threads', 'mysql.thread_cache_misses', 'area'],
         'lines': [
             ['Thread_cache_misses', 'misses', 'absolute', 1, 100]
-        ]},
+        ]
+    },
     'innodb_io': {
         'options': [None, 'mysql InnoDB I/O Bandwidth', 'kilobytes/s', 'innodb', 'mysql.innodb_io', 'area'],
         'lines': [
             ['Innodb_data_read', 'read', 'incremental', 1, 1024],
             ['Innodb_data_written', 'write', 'incremental', -1, 1024]
-        ]},
+        ]
+    },
     'innodb_io_ops': {
         'options': [None, 'mysql InnoDB I/O Operations', 'operations/s', 'innodb', 'mysql.innodb_io_ops', 'line'],
         'lines': [
             ['Innodb_data_reads', 'reads', 'incremental'],
             ['Innodb_data_writes', 'writes', 'incremental', -1, 1],
             ['Innodb_data_fsyncs', 'fsyncs', 'incremental']
-        ]},
+        ]
+    },
     'innodb_io_pending_ops': {
         'options': [None, 'mysql InnoDB Pending I/O Operations', 'operations', 'innodb',
                     'mysql.innodb_io_pending_ops', 'line'],
@@ -265,32 +342,37 @@ CHARTS = {
             ['Innodb_data_pending_reads', 'reads', 'absolute'],
             ['Innodb_data_pending_writes', 'writes', 'absolute', -1, 1],
             ['Innodb_data_pending_fsyncs', 'fsyncs', 'absolute']
-        ]},
+        ]
+    },
     'innodb_log': {
         'options': [None, 'mysql InnoDB Log Operations', 'operations/s', 'innodb', 'mysql.innodb_log', 'line'],
         'lines': [
             ['Innodb_log_waits', 'waits', 'incremental'],
             ['Innodb_log_write_requests', 'write_requests', 'incremental', -1, 1],
             ['Innodb_log_writes', 'writes', 'incremental', -1, 1],
-        ]},
+        ]
+    },
     'innodb_os_log': {
         'options': [None, 'mysql InnoDB OS Log Operations', 'operations', 'innodb', 'mysql.innodb_os_log', 'line'],
         'lines': [
             ['Innodb_os_log_fsyncs', 'fsyncs', 'incremental'],
             ['Innodb_os_log_pending_fsyncs', 'pending_fsyncs', 'absolute'],
             ['Innodb_os_log_pending_writes', 'pending_writes', 'absolute', -1, 1],
-        ]},
+        ]
+    },
     'innodb_os_log_io': {
         'options': [None, 'mysql InnoDB OS Log Bandwidth', 'kilobytes/s', 'innodb', 'mysql.innodb_os_log_io', 'area'],
         'lines': [
             ['Innodb_os_log_written', 'write', 'incremental', -1, 1024],
-        ]},
+        ]
+    },
     'innodb_cur_row_lock': {
         'options': [None, 'mysql InnoDB Current Row Locks', 'operations', 'innodb',
                     'mysql.innodb_cur_row_lock', 'area'],
         'lines': [
             ['Innodb_row_lock_current_waits', 'current_waits', 'absolute']
-        ]},
+        ]
+    },
     'innodb_rows': {
         'options': [None, 'mysql InnoDB Row Operations', 'operations/s', 'innodb', 'mysql.innodb_rows', 'area'],
         'lines': [
@@ -298,7 +380,8 @@ CHARTS = {
             ['Innodb_rows_read', 'read', 'incremental', 1, 1],
             ['Innodb_rows_updated', 'updated', 'incremental', 1, 1],
             ['Innodb_rows_deleted', 'deleted', 'incremental', -1, 1],
-        ]},
+        ]
+    },
     'innodb_buffer_pool_pages': {
         'options': [None, 'mysql InnoDB Buffer Pool Pages', 'pages', 'innodb',
                     'mysql.innodb_buffer_pool_pages', 'line'],
@@ -309,13 +392,15 @@ CHARTS = {
             ['Innodb_buffer_pool_pages_flushed', 'flushed', 'incremental', -1, 1],
             ['Innodb_buffer_pool_pages_misc', 'misc', 'absolute', -1, 1],
             ['Innodb_buffer_pool_pages_total', 'total', 'absolute']
-        ]},
+        ]
+    },
     'innodb_buffer_pool_bytes': {
         'options': [None, 'mysql InnoDB Buffer Pool Bytes', 'MB', 'innodb', 'mysql.innodb_buffer_pool_bytes', 'area'],
         'lines': [
             ['Innodb_buffer_pool_bytes_data', 'data', 'absolute', 1, 1024 * 1024],
             ['Innodb_buffer_pool_bytes_dirty', 'dirty', 'absolute', -1, 1024 * 1024]
-        ]},
+        ]
+    },
     'innodb_buffer_pool_read_ahead': {
         'options': [None, 'mysql InnoDB Buffer Pool Read Ahead', 'operations/s', 'innodb',
                     'mysql.innodb_buffer_pool_read_ahead', 'area'],
@@ -323,21 +408,24 @@ CHARTS = {
             ['Innodb_buffer_pool_read_ahead', 'all', 'incremental'],
             ['Innodb_buffer_pool_read_ahead_evicted', 'evicted', 'incremental', -1, 1],
             ['Innodb_buffer_pool_read_ahead_rnd', 'random', 'incremental']
-        ]},
+        ]
+    },
     'innodb_buffer_pool_reqs': {
         'options': [None, 'mysql InnoDB Buffer Pool Requests', 'requests/s', 'innodb',
                     'mysql.innodb_buffer_pool_reqs', 'area'],
         'lines': [
             ['Innodb_buffer_pool_read_requests', 'reads', 'incremental'],
             ['Innodb_buffer_pool_write_requests', 'writes', 'incremental', -1, 1]
-        ]},
+        ]
+    },
     'innodb_buffer_pool_ops': {
         'options': [None, 'mysql InnoDB Buffer Pool Operations', 'operations/s', 'innodb',
                     'mysql.innodb_buffer_pool_ops', 'area'],
         'lines': [
             ['Innodb_buffer_pool_reads', 'disk reads', 'incremental'],
             ['Innodb_buffer_pool_wait_free', 'wait free', 'incremental', -1, 1]
-        ]},
+        ]
+    },
     'qcache_ops': {
         'options': [None, 'mysql QCache Operations', 'queries/s', 'qcache', 'mysql.qcache_ops', 'line'],
         'lines': [
@@ -345,60 +433,70 @@ CHARTS = {
             ['Qcache_lowmem_prunes', 'lowmem prunes', 'incremental', -1, 1],
             ['Qcache_inserts', 'inserts', 'incremental'],
             ['Qcache_not_cached', 'not cached', 'incremental', -1, 1]
-        ]},
+        ]
+    },
     'qcache': {
         'options': [None, 'mysql QCache Queries in Cache', 'queries', 'qcache', 'mysql.qcache', 'line'],
         'lines': [
             ['Qcache_queries_in_cache', 'queries', 'absolute']
-        ]},
+        ]
+    },
     'qcache_freemem': {
         'options': [None, 'mysql QCache Free Memory', 'MB', 'qcache', 'mysql.qcache_freemem', 'area'],
         'lines': [
             ['Qcache_free_memory', 'free', 'absolute', 1, 1024 * 1024]
-        ]},
+        ]
+    },
     'qcache_memblocks': {
         'options': [None, 'mysql QCache Memory Blocks', 'blocks', 'qcache', 'mysql.qcache_memblocks', 'line'],
         'lines': [
             ['Qcache_free_blocks', 'free', 'absolute'],
             ['Qcache_total_blocks', 'total', 'absolute']
-        ]},
+        ]
+    },
     'key_blocks': {
         'options': [None, 'mysql MyISAM Key Cache Blocks', 'blocks', 'myisam', 'mysql.key_blocks', 'line'],
         'lines': [
             ['Key_blocks_unused', 'unused', 'absolute'],
             ['Key_blocks_used', 'used', 'absolute', -1, 1],
             ['Key_blocks_not_flushed', 'not flushed', 'absolute']
-        ]},
+        ]
+    },
     'key_requests': {
         'options': [None, 'mysql MyISAM Key Cache Requests', 'requests/s', 'myisam', 'mysql.key_requests', 'area'],
         'lines': [
             ['Key_read_requests', 'reads', 'incremental'],
             ['Key_write_requests', 'writes', 'incremental', -1, 1]
-        ]},
+        ]
+    },
     'key_disk_ops': {
         'options': [None, 'mysql MyISAM Key Cache Disk Operations', 'operations/s',
                     'myisam', 'mysql.key_disk_ops', 'area'],
         'lines': [
             ['Key_reads', 'reads', 'incremental'],
             ['Key_writes', 'writes', 'incremental', -1, 1]
-        ]},
+        ]
+    },
     'files': {
         'options': [None, 'mysql Open Files', 'files', 'files', 'mysql.files', 'line'],
         'lines': [
             ['Open_files', 'files', 'absolute']
-        ]},
+        ]
+    },
     'files_rate': {
         'options': [None, 'mysql Opened Files Rate', 'files/s', 'files', 'mysql.files_rate', 'line'],
         'lines': [
             ['Opened_files', 'files', 'incremental']
-        ]},
+        ]
+    },
     'binlog_stmt_cache': {
         'options': [None, 'mysql Binlog Statement Cache', 'statements/s', 'binlog',
                     'mysql.binlog_stmt_cache', 'line'],
         'lines': [
             ['Binlog_stmt_cache_disk_use', 'disk', 'incremental'],
             ['Binlog_stmt_cache_use', 'all', 'incremental']
-        ]},
+        ]
+    },
     'connection_errors': {
         'options': [None, 'mysql Connection Errors', 'connections/s', 'connections',
                     'mysql.connection_errors', 'line'],
@@ -409,47 +507,55 @@ CHARTS = {
             ['Connection_errors_peer_address', 'peer_addr', 'incremental'],
             ['Connection_errors_select', 'select', 'incremental'],
             ['Connection_errors_tcpwrap', 'tcpwrap', 'incremental']
-        ]},
+        ]
+    },
     'slave_behind': {
         'options': [None, 'Slave Behind Seconds', 'seconds', 'slave', 'mysql.slave_behind', 'line'],
         'lines': [
             ['Seconds_Behind_Master', 'seconds', 'absolute']
-        ]},
+        ]
+    },
     'slave_status': {
         'options': [None, 'Slave Status', 'status', 'slave', 'mysql.slave_status', 'line'],
         'lines': [
             ['Slave_SQL_Running', 'sql_running', 'absolute'],
             ['Slave_IO_Running', 'io_running', 'absolute']
-        ]},
+        ]
+    },
     'galera_writesets': {
         'options': [None, 'Replicated writesets', 'writesets/s', 'galera', 'mysql.galera_writesets', 'line'],
         'lines': [
             ['wsrep_received', 'rx', 'incremental'],
             ['wsrep_replicated', 'tx', 'incremental', -1, 1],
-        ]},
+        ]
+    },
     'galera_bytes': {
         'options': [None, 'Replicated bytes', 'KB/s', 'galera', 'mysql.galera_bytes', 'area'],
         'lines': [
             ['wsrep_received_bytes', 'rx', 'incremental', 1, 1024],
             ['wsrep_replicated_bytes', 'tx', 'incremental', -1, 1024],
-        ]},
+        ]
+    },
     'galera_queue': {
         'options': [None, 'Galera queue', 'writesets', 'galera', 'mysql.galera_queue', 'line'],
         'lines': [
             ['wsrep_local_recv_queue', 'rx', 'absolute'],
             ['wsrep_local_send_queue', 'tx', 'absolute', -1, 1],
-        ]},
+        ]
+    },
     'galera_conflicts': {
         'options': [None, 'Replication conflicts', 'transactions', 'galera', 'mysql.galera_conflicts', 'area'],
         'lines': [
             ['wsrep_local_bf_aborts', 'bf_aborts', 'incremental'],
             ['wsrep_local_cert_failures', 'cert_fails', 'incremental', -1, 1],
-        ]},
+        ]
+    },
     'galera_flow_control': {
         'options': [None, 'Flow control', 'millisec', 'galera', 'mysql.galera_flow_control', 'area'],
         'lines': [
             ['wsrep_flow_control_paused_ns', 'paused', 'incremental', 1, 1000000],
-        ]}
+        ]
+    }
 }
 
 
@@ -458,7 +564,7 @@ class Service(MySQLService):
         MySQLService.__init__(self, configuration=configuration, name=name)
         self.order = ORDER
         self.definitions = CHARTS
-        self.queries = dict(global_status=QUERY_GLOBAL, slave_status=QUERY_SLAVE)
+        self.queries = dict(global_status=QUERY_GLOBAL, slave_status=QUERY_SLAVE, variables=QUERY_VARIABLES)
 
     def _get_data(self):
 
@@ -487,5 +593,10 @@ class Service(MySQLService):
             else:
                 self.queries.pop('slave_status')
 
-        return to_netdata or None
+        if 'variables' in raw_data:
+            variables = dict(raw_data['variables'][0])
+            for key in VARIABLES:
+                if key in variables:
+                    to_netdata[key] = variables[key]
 
+        return to_netdata or None
diff --git a/conf.d/python.d/mysql.conf b/collectors/python.d.plugin/mysql/mysql.conf
index b5956a2c6..b5956a2c6 100644
--- a/conf.d/python.d/mysql.conf
+++ b/collectors/python.d.plugin/mysql/mysql.conf
diff --git a/collectors/python.d.plugin/nginx/Makefile.inc b/collectors/python.d.plugin/nginx/Makefile.inc
new file mode 100644
index 000000000..4636aa830
--- /dev/null
+++ b/collectors/python.d.plugin/nginx/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += nginx/nginx.chart.py
+dist_pythonconfig_DATA += nginx/nginx.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += nginx/README.md nginx/Makefile.inc
+
diff --git a/collectors/python.d.plugin/nginx/README.md b/collectors/python.d.plugin/nginx/README.md
new file mode 100644
index 000000000..007f45c7c
--- /dev/null
+++ b/collectors/python.d.plugin/nginx/README.md
@@ -0,0 +1,45 @@
+# nginx
+
+This module will monitor one or more nginx servers depending on configuration. Servers can be either local or remote.
+
+**Requirements:**
+ * nginx with configured 'ngx_http_stub_status_module'
+ * 'location /stub_status'
+
+Example nginx configuration can be found in 'python.d/nginx.conf'
+
+It produces following charts:
+
+1. **Active Connections**
+ * active
+
+2. **Requests** in requests/s
+ * requests
+
+3. **Active Connections by Status**
+ * reading
+ * writing
+ * waiting
+
+4. **Connections Rate** in connections/s
+ * accepts
+ * handled
+
+### configuration
+
+Needs only `url` to server's `stub_status`
+
+Here is an example for local server:
+
+```yaml
+update_every : 10
+priority     : 90100
+
+local:
+  url     : 'http://localhost/stub_status'
+  retries : 10
+```
+
+Without configuration, module attempts to connect to `http://localhost/stub_status`
+
+---
diff --git a/python.d/nginx.chart.py b/collectors/python.d.plugin/nginx/nginx.chart.py
index 2e4f0d1b5..09c6bbd37 100644
--- a/python.d/nginx.chart.py
+++ b/collectors/python.d.plugin/nginx/nginx.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: nginx netdata python.d module
 # Author: Pawel Krupa (paulfantom)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.FrameworkServices.UrlService import UrlService
 
@@ -25,28 +26,32 @@ CHARTS = {
         'options': [None, 'nginx Active Connections', 'connections', 'active connections',
                     'nginx.connections', 'line'],
         'lines': [
-            ["active"]
-        ]},
+            ['active']
+        ]
+    },
     'requests': {
         'options': [None, 'nginx Requests', 'requests/s', 'requests', 'nginx.requests', 'line'],
         'lines': [
-            ["requests", None, 'incremental']
-        ]},
+            ['requests', None, 'incremental']
+        ]
+    },
     'connection_status': {
         'options': [None, 'nginx Active Connections by Status', 'connections', 'status',
                     'nginx.connection_status', 'line'],
         'lines': [
-            ["reading"],
-            ["writing"],
-            ["waiting", "idle"]
-        ]},
+            ['reading'],
+            ['writing'],
+            ['waiting', 'idle']
+        ]
+    },
     'connect_rate': {
         'options': [None, 'nginx Connections Rate', 'connections/s', 'connections rate',
                     'nginx.connect_rate', 'line'],
         'lines': [
-            ["accepts", "accepted", "incremental"],
-            ["handled", None, "incremental"]
-        ]}
+            ['accepts', 'accepted', 'incremental'],
+            ['handled', None, 'incremental']
+        ]
+    }
 }
 
 
diff --git a/conf.d/python.d/nginx.conf b/collectors/python.d.plugin/nginx/nginx.conf
index 71c521066..71c521066 100644
--- a/conf.d/python.d/nginx.conf
+++ b/collectors/python.d.plugin/nginx/nginx.conf
diff --git a/collectors/python.d.plugin/nginx_plus/Makefile.inc b/collectors/python.d.plugin/nginx_plus/Makefile.inc
new file mode 100644
index 000000000..d3fdeaf2b
--- /dev/null
+++ b/collectors/python.d.plugin/nginx_plus/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += nginx_plus/nginx_plus.chart.py
+dist_pythonconfig_DATA += nginx_plus/nginx_plus.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += nginx_plus/README.md nginx_plus/Makefile.inc
+
diff --git a/collectors/python.d.plugin/nginx_plus/README.md b/collectors/python.d.plugin/nginx_plus/README.md
new file mode 100644
index 000000000..43ec867a3
--- /dev/null
+++ b/collectors/python.d.plugin/nginx_plus/README.md
@@ -0,0 +1,125 @@
+# nginx_plus
+
+This module will monitor one or more nginx_plus servers depending on configuration.
+Servers can be either local or remote.
+
+Example nginx_plus configuration can be found in 'python.d/nginx_plus.conf'
+
+It produces following charts:
+
+1. **Requests total** in requests/s
+ * total
+
+2. **Requests current** in requests
+ * current
+
+3. **Connection Statistics** in connections/s
+ * accepted
+ * dropped
+
+4. **Workers Statistics** in workers
+ * idle
+ * active
+
+5. **SSL Handshakes** in handshakes/s
+ * successful
+ * failed
+
+6. **SSL Session Reuses** in sessions/s
+ * reused
+
+7. **SSL Memory Usage** in percent
+ * usage
+
+8. **Processes** in processes
+ * respawned
+
+For every server zone:
+
+1. **Processing** in requests
+ * processing
+
+2. **Requests** in requests/s
+ * requests
+
+3. **Responses** in requests/s
+ * 1xx
+ * 2xx
+ * 3xx
+ * 4xx
+ * 5xx
+
+4. **Traffic** in kilobits/s
+ * received
+ * sent
+
+For every upstream:
+
+1. **Peers Requests** in requests/s
+ * peer name (dimension per peer)
+
+2. **All Peers Responses** in responses/s
+ * 1xx
+ * 2xx
+ * 3xx
+ * 4xx
+ * 5xx
+
+3. **Peer Responses** in requests/s (for every peer)
+ * 1xx
+ * 2xx
+ * 3xx
+ * 4xx
+ * 5xx
+
+4. **Peers Connections** in active
+ * peer name (dimension per peer)
+
+5. **Peers Connections Usage** in percent
+ * peer name (dimension per peer)
+
+6. **All Peers Traffic** in KB
+ * received
+ * sent
+
+7. **Peer Traffic** in KB/s (for every peer)
+ * received
+ * sent
+
+8. **Peer Timings** in ms (for every peer)
+ * header
+ * response
+
+9. **Memory Usage** in percent
+ * usage
+
+10. **Peers Status** in state
+ * peer name (dimension per peer)
+
+11. **Peers Total Downtime** in seconds
+ * peer name (dimension per peer)
+
+For every cache:
+
+1. **Traffic** in KB
+ * served
+ * written
+ * bypass
+
+2. **Memory Usage** in percent
+ * usage
+
+### configuration
+
+Needs only `url` to server's `status`
+
+Here is an example for local server:
+
+```yaml
+local:
+  url     : 'http://localhost/status'
+```
+
+Without configuration, module fail to start.
+
+---
diff --git a/python.d/nginx_plus.chart.py b/collectors/python.d.plugin/nginx_plus/nginx_plus.chart.py
index 509ddd380..1392f5a56 100644
--- a/python.d/nginx_plus.chart.py
+++ b/collectors/python.d.plugin/nginx_plus/nginx_plus.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: nginx_plus netdata python.d module
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import re
 
@@ -21,63 +22,71 @@ priority = 60000
 retries = 60
 
 # charts order (can be overridden if you want less charts, or different order)
-ORDER = ['requests_total', 'requests_current',
-         'connections_statistics', 'connections_workers',
-         'ssl_handshakes', 'ssl_session_reuses', 'ssl_memory_usage',
-         'processes']
+ORDER = [
+    'requests_total',
+    'requests_current',
+    'connections_statistics',
+    'connections_workers',
+    'ssl_handshakes',
+    'ssl_session_reuses',
+    'ssl_memory_usage',
+    'processes'
+]
 
 CHARTS = {
     'requests_total': {
-        'options': [None, 'Requests Total', 'requests/s',
-                    'requests', 'nginx_plus.requests_total', 'line'],
+        'options': [None, 'Requests Total', 'requests/s', 'requests', 'nginx_plus.requests_total', 'line'],
         'lines': [
             ['requests_total', 'total', 'incremental']
-        ]},
+        ]
+    },
     'requests_current': {
-        'options': [None, 'Requests Current', 'requests',
-                    'requests', 'nginx_plus.requests_current', 'line'],
+        'options': [None, 'Requests Current', 'requests', 'requests', 'nginx_plus.requests_current', 'line'],
         'lines': [
             ['requests_current', 'current']
-        ]},
+        ]
+    },
     'connections_statistics': {
         'options': [None, 'Connections Statistics', 'connections/s',
                     'connections', 'nginx_plus.connections_statistics', 'stacked'],
         'lines': [
             ['connections_accepted', 'accepted', 'incremental'],
             ['connections_dropped', 'dropped', 'incremental']
-        ]},
+        ]
+    },
     'connections_workers': {
         'options': [None, 'Workers Statistics', 'workers',
                     'connections', 'nginx_plus.connections_workers', 'stacked'],
         'lines': [
             ['connections_idle', 'idle'],
             ['connections_active', 'active']
-        ]},
+        ]
+    },
     'ssl_handshakes': {
-        'options': [None, 'SSL Handshakes', 'handshakes/s',
-                    'ssl', 'nginx_plus.ssl_handshakes', 'stacked'],
+        'options': [None, 'SSL Handshakes', 'handshakes/s', 'ssl', 'nginx_plus.ssl_handshakes', 'stacked'],
         'lines': [
             ['ssl_handshakes', 'successful', 'incremental'],
             ['ssl_handshakes_failed', 'failed', 'incremental']
-        ]},
+        ]
+    },
     'ssl_session_reuses': {
-        'options': [None, 'Session Reuses', 'sessions/s',
-                    'ssl', 'nginx_plus.ssl_session_reuses', 'line'],
+        'options': [None, 'Session Reuses', 'sessions/s', 'ssl', 'nginx_plus.ssl_session_reuses', 'line'],
         'lines': [
             ['ssl_session_reuses', 'reused', 'incremental']
-        ]},
+        ]
+    },
     'ssl_memory_usage': {
-        'options': [None, 'Memory Usage', '%',
-                    'ssl', 'nginx_plus.ssl_memory_usage', 'area'],
+        'options': [None, 'Memory Usage', '%', 'ssl', 'nginx_plus.ssl_memory_usage', 'area'],
         'lines': [
             ['ssl_memory_usage', 'usage', 'absolute', 1, 100]
-        ]},
+        ]
+    },
     'processes': {
-        'options': [None, 'Processes', 'processes',
-                    'processes', 'nginx_plus.processes', 'line'],
+        'options': [None, 'Processes', 'processes', 'processes', 'nginx_plus.processes', 'line'],
         'lines': [
             ['processes_respawned', 'respawned']
-        ]}
+        ]
+    }
 }
 
 
@@ -86,17 +95,15 @@ def cache_charts(cache):
     charts = OrderedDict()
 
     charts['{0}_traffic'.format(cache.name)] = {
-        'options': [None, 'Traffic', 'KB', family,
-                    'nginx_plus.cache_traffic', 'stacked'],
+        'options': [None, 'Traffic', 'KB', family, 'nginx_plus.cache_traffic', 'stacked'],
         'lines': [
             ['_'.join([cache.name, 'hit_bytes']), 'served', 'absolute', 1, 1024],
             ['_'.join([cache.name, 'miss_bytes_written']), 'written', 'absolute', 1, 1024],
             ['_'.join([cache.name, 'miss_bytes']), 'bypass', 'absolute', 1, 1024]
-            ]
+        ]
     }
     charts['{0}_memory_usage'.format(cache.name)] = {
-        'options': [None, 'Memory Usage', '%', family,
-                    'nginx_plus.cache_memory_usage', 'area'],
+        'options': [None, 'Memory Usage', '%', family, 'nginx_plus.cache_memory_usage', 'area'],
         'lines': [
             ['_'.join([cache.name, 'memory_usage']), 'usage', 'absolute', 1, 100],
         ]
@@ -160,8 +167,7 @@ def web_upstream_charts(wu):
 
     # Requests
     charts['web_upstream_{name}_requests'.format(name=wu.name)] = {
-        'options': [None, 'Peers Requests', 'requests/s', family,
-                    'nginx_plus.web_upstream_requests', 'line'],
+        'options': [None, 'Peers Requests', 'requests/s', family, 'nginx_plus.web_upstream_requests', 'line'],
         'lines': dimensions('requests', 'incremental')
     }
     # Responses Codes
@@ -177,7 +183,7 @@ def web_upstream_charts(wu):
         ]
     }
     for peer in wu:
-        charts['web_upstream_{0}_{1}_responses'.format(wu.name, peer.id)] = {
+        charts['web_upstream_{0}_{1}_responses'.format(wu.name, peer.server)] = {
             'options': [None, 'Peer "{0}" Responses'.format(peer.real_server), 'responses/s', family,
                         'nginx_plus.web_upstream_peer_responses', 'stacked'],
             'lines': [
@@ -190,26 +196,23 @@ def web_upstream_charts(wu):
         }
     # Connections
     charts['web_upstream_{name}_connections'.format(name=wu.name)] = {
-        'options': [None, 'Peers Connections', 'active', family,
-                    'nginx_plus.web_upstream_connections', 'line'],
+        'options': [None, 'Peers Connections', 'active', family, 'nginx_plus.web_upstream_connections', 'line'],
         'lines': dimensions('active')
     }
     charts['web_upstream_{name}_connections_usage'.format(name=wu.name)] = {
-        'options': [None, 'Peers Connections Usage', '%', family,
-                    'nginx_plus.web_upstream_connections_usage', 'line'],
+        'options': [None, 'Peers Connections Usage', '%', family, 'nginx_plus.web_upstream_connections_usage', 'line'],
         'lines': dimensions('connections_usage', d=100)
     }
     # Traffic
     charts['web_upstream_{0}_all_net'.format(wu.name)] = {
-        'options': [None, 'All Peers Traffic', 'kilobits/s', family,
-                    'nginx_plus.web_upstream_all_net', 'area'],
+        'options': [None, 'All Peers Traffic', 'kilobits/s', family, 'nginx_plus.web_upstream_all_net', 'area'],
         'lines': [
             ['{0}_received'.format(wu.name), 'received', 'incremental', 1, 1000],
             ['{0}_sent'.format(wu.name), 'sent', 'incremental', -1, 1000]
         ]
     }
     for peer in wu:
-        charts['web_upstream_{0}_{1}_net'.format(wu.name, peer.id)] = {
+        charts['web_upstream_{0}_{1}_net'.format(wu.name, peer.server)] = {
             'options': [None, 'Peer "{0}" Traffic'.format(peer.real_server), 'kilobits/s', family,
                         'nginx_plus.web_upstream_peer_traffic', 'area'],
             'lines': [
@@ -219,7 +222,7 @@ def web_upstream_charts(wu):
         }
     # Response Time
     for peer in wu:
-        charts['web_upstream_{0}_{1}_timings'.format(wu.name, peer.id)] = {
+        charts['web_upstream_{0}_{1}_timings'.format(wu.name, peer.server)] = {
             'options': [None, 'Peer "{0}" Timings'.format(peer.real_server), 'ms', family,
                         'nginx_plus.web_upstream_peer_timings', 'line'],
             'lines': [
@@ -229,30 +232,27 @@ def web_upstream_charts(wu):
         }
     # Memory Usage
     charts['web_upstream_{name}_memory_usage'.format(name=wu.name)] = {
-        'options': [None, 'Memory Usage', '%', family,
-                    'nginx_plus.web_upstream_memory_usage', 'area'],
+        'options': [None, 'Memory Usage', '%', family, 'nginx_plus.web_upstream_memory_usage', 'area'],
         'lines': [
             ['_'.join([wu.name, 'memory_usage']), 'usage', 'absolute', 1, 100]
         ]
     }
     # State
     charts['web_upstream_{name}_status'.format(name=wu.name)] = {
-        'options': [None, 'Peers Status', 'state', family,
-                    'nginx_plus.web_upstream_status', 'line'],
+        'options': [None, 'Peers Status', 'state', family, 'nginx_plus.web_upstream_status', 'line'],
         'lines': dimensions('state')
     }
     # Downtime
     charts['web_upstream_{name}_downtime'.format(name=wu.name)] = {
-        'options': [None, 'Peers Downtime', 'seconds', family,
-                    'nginx_plus.web_upstream_peer_downtime', 'line'],
+        'options': [None, 'Peers Downtime', 'seconds', family, 'nginx_plus.web_upstream_peer_downtime', 'line'],
         'lines': dimensions('downtime', d=1000)
     }
 
     return charts
 
 
-METRICS = dict(
-    SERVER=[
+METRICS = {
+    'SERVER': [
         'processes.respawned',
         'connections.accepted',
         'connections.dropped',
@@ -266,7 +266,7 @@ METRICS = dict(
         'slabs.SSL.pages.free',
         'slabs.SSL.pages.used'
     ],
-    WEB_ZONE=[
+    'WEB_ZONE': [
         'processing',
         'requests',
         'responses.1xx',
@@ -278,7 +278,7 @@ METRICS = dict(
         'received',
         'sent'
     ],
-    WEB_UPSTREAM_PEER=[
+    'WEB_UPSTREAM_PEER': [
         'id',
         'server',
         'name',
@@ -297,7 +297,7 @@ METRICS = dict(
         'received',
         'downtime'
     ],
-    WEB_UPSTREAM_SUMMARY=[
+    'WEB_UPSTREAM_SUMMARY': [
         'responses.1xx',
         'responses.2xx',
         'responses.3xx',
@@ -306,13 +306,13 @@ METRICS = dict(
         'sent',
         'received'
     ],
-    CACHE=[
+    'CACHE': [
         'hit.bytes',  # served
         'miss.bytes_written',  # written
         'miss.bytes'  # bypass
 
     ]
-)
+}
 
 BAD_SYMBOLS = re.compile(r'[:/.-]+')
 
@@ -373,6 +373,7 @@ class WebUpstream:
         return peer
 
     def peers_stats(self, peers):
+        peers = {int(peer['id']): peer for peer in peers}
         data = dict()
         for peer in self.peers.values():
             if not peer.active:
diff --git a/conf.d/python.d/nginx_plus.conf b/collectors/python.d.plugin/nginx_plus/nginx_plus.conf
index 7b5c8f43f..7b5c8f43f 100644
--- a/conf.d/python.d/nginx_plus.conf
+++ b/collectors/python.d.plugin/nginx_plus/nginx_plus.conf
diff --git a/collectors/python.d.plugin/nsd/Makefile.inc b/collectors/python.d.plugin/nsd/Makefile.inc
new file mode 100644
index 000000000..58e9fd67d
--- /dev/null
+++ b/collectors/python.d.plugin/nsd/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += nsd/nsd.chart.py
+dist_pythonconfig_DATA += nsd/nsd.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += nsd/README.md nsd/Makefile.inc
+
diff --git a/collectors/python.d.plugin/nsd/README.md b/collectors/python.d.plugin/nsd/README.md
new file mode 100644
index 000000000..02c302f41
--- /dev/null
+++ b/collectors/python.d.plugin/nsd/README.md
@@ -0,0 +1,54 @@
+# nsd
+
+Module uses the `nsd-control stats_noreset` command to provide `nsd` statistics.
+
+**Requirements:**
+ * Version of `nsd` must be 4.0+
+ * Netdata must have permissions to run `nsd-control stats_noreset`
+
+It produces:
+
+1. **Queries**
+ * queries
+
+2. **Zones**
+ * master
+ * slave
+
+3. **Protocol**
+ * udp
+ * udp6
+ * tcp
+ * tcp6
+
+4. **Query Type**
+ * A
+ * NS
+ * CNAME
+ * SOA
+ * PTR
+ * HINFO
+ * MX
+ * NAPTR
+ * TXT
+ * AAAA
+ * SRV
+ * ANY
+
+5. **Transfer**
+ * NOTIFY
+ * AXFR
+
+6. **Return Code**
+ * NOERROR
+ * FORMERR
+ * SERVFAIL
+ * NXDOMAIN
+ * NOTIMP
+ * REFUSED
+ * YXDOMAIN
+
+
+Configuration is not needed.
+
+---
diff --git a/python.d/nsd.chart.py b/collectors/python.d.plugin/nsd/nsd.chart.py
index 499dfda2e..d713f46bd 100644
--- a/python.d/nsd.chart.py
+++ b/collectors/python.d.plugin/nsd/nsd.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: NSD `nsd-control stats_noreset` netdata python.d module
 # Author: <383c57 at gmail.com>
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import re
 
@@ -16,27 +17,29 @@ ORDER = ['queries', 'zones', 'protocol', 'type', 'transfer', 'rcode']
 
 CHARTS = {
     'queries': {
-        'options': [
-            None, "queries", 'queries/s', 'queries', 'nsd.queries', 'line'],
+        'options': [None, 'queries', 'queries/s', 'queries', 'nsd.queries', 'line'],
         'lines': [
-            ['num_queries', 'queries', 'incremental'],]},
+            ['num_queries', 'queries', 'incremental']
+        ]
+    },
     'zones': {
-        'options': [
-            None, "zones", 'zones', 'zones', 'nsd.zones', 'stacked'],
+        'options': [None, 'zones', 'zones', 'zones', 'nsd.zones', 'stacked'],
         'lines': [
             ['zone_master', 'master', 'absolute'],
-            ['zone_slave', 'slave', 'absolute'],]},
+            ['zone_slave', 'slave', 'absolute']
+        ]
+    },
     'protocol': {
-        'options': [
-            None, "protocol", 'queries/s', 'protocol', 'nsd.protocols', 'stacked'],
+        'options': [None, 'protocol', 'queries/s', 'protocol', 'nsd.protocols', 'stacked'],
         'lines': [
             ['num_udp', 'udp', 'incremental'],
             ['num_udp6', 'udp6', 'incremental'],
             ['num_tcp', 'tcp', 'incremental'],
-            ['num_tcp6', 'tcp6', 'incremental'],]},
+            ['num_tcp6', 'tcp6', 'incremental']
+        ]
+    },
     'type': {
-        'options': [
-            None, "query type", 'queries/s', 'query type', 'nsd.type', 'stacked'],
+        'options': [None, 'query type', 'queries/s', 'query type', 'nsd.type', 'stacked'],
         'lines': [
             ['num_type_A', 'A', 'incremental'],
             ['num_type_NS', 'NS', 'incremental'],
@@ -49,16 +52,18 @@ CHARTS = {
             ['num_type_TXT', 'TXT', 'incremental'],
             ['num_type_AAAA', 'AAAA', 'incremental'],
             ['num_type_SRV', 'SRV', 'incremental'],
-            ['num_type_TYPE255', 'ANY', 'incremental'],]},
+            ['num_type_TYPE255', 'ANY', 'incremental']
+        ]
+    },
     'transfer': {
-        'options': [
-            None, "transfer", 'queries/s', 'transfer', 'nsd.transfer', 'stacked'],
+        'options': [None, 'transfer', 'queries/s', 'transfer', 'nsd.transfer', 'stacked'],
         'lines': [
             ['num_opcode_NOTIFY', 'NOTIFY', 'incremental'],
-            ['num_type_TYPE252', 'AXFR', 'incremental'],]},
+            ['num_type_TYPE252', 'AXFR', 'incremental']
+        ]
+    },
     'rcode': {
-        'options': [
-            None, "return code", 'queries/s', 'return code', 'nsd.rcode', 'stacked'],
+        'options': [None, 'return code', 'queries/s', 'return code', 'nsd.rcode', 'stacked'],
         'lines': [
             ['num_rcode_NOERROR', 'NOERROR', 'incremental'],
             ['num_rcode_FORMERR', 'FORMERR', 'incremental'],
@@ -66,7 +71,9 @@ CHARTS = {
             ['num_rcode_NXDOMAIN', 'NXDOMAIN', 'incremental'],
             ['num_rcode_NOTIMP', 'NOTIMP', 'incremental'],
             ['num_rcode_REFUSED', 'REFUSED', 'incremental'],
-            ['num_rcode_YXDOMAIN', 'YXDOMAIN', 'incremental'],]}
+            ['num_rcode_YXDOMAIN', 'YXDOMAIN', 'incremental']
+        ]
+    }
 }
 
 
@@ -74,7 +81,7 @@ class Service(ExecutableService):
     def __init__(self, configuration=None, name=None):
         ExecutableService.__init__(
             self, configuration=configuration, name=name)
-        self.command = "nsd-control stats_noreset"
+        self.command = 'nsd-control stats_noreset'
         self.order = ORDER
         self.definitions = CHARTS
         self.regex = re.compile(r'([A-Za-z0-9.]+)=(\d+)')
diff --git a/conf.d/python.d/nsd.conf b/collectors/python.d.plugin/nsd/nsd.conf
index 078e97216..078e97216 100644
--- a/conf.d/python.d/nsd.conf
+++ b/collectors/python.d.plugin/nsd/nsd.conf
diff --git a/collectors/python.d.plugin/ntpd/Makefile.inc b/collectors/python.d.plugin/ntpd/Makefile.inc
new file mode 100644
index 000000000..81210ebab
--- /dev/null
+++ b/collectors/python.d.plugin/ntpd/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += ntpd/ntpd.chart.py
+dist_pythonconfig_DATA += ntpd/ntpd.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += ntpd/README.md ntpd/Makefile.inc
+
diff --git a/collectors/python.d.plugin/ntpd/README.md b/collectors/python.d.plugin/ntpd/README.md
new file mode 100644
index 000000000..b0fa17fde
--- /dev/null
+++ b/collectors/python.d.plugin/ntpd/README.md
@@ -0,0 +1,71 @@
+# ntpd
+
+Module monitors the system variables of the local `ntpd` daemon (optional incl. variables of the polled peers) using the NTP Control Message Protocol via UDP socket, similar to `ntpq`, the [standard NTP query program](http://doc.ntp.org/current-stable/ntpq.html).
+
+**Requirements:**
+ * Version: `NTPv4`
+ * Local interrogation allowed in `/etc/ntp.conf` (default):
+
+```
+# Local users may interrogate the ntp server more closely.
+restrict 127.0.0.1
+restrict ::1
+```
+
+It produces:
+
+1. system
+ * offset
+ * jitter
+ * frequency
+ * delay
+ * dispersion
+ * stratum
+ * tc
+ * precision
+
+2. peers
+ * offset
+ * delay
+ * dispersion
+ * jitter
+ * rootdelay
+ * rootdispersion
+ * stratum
+ * hmode
+ * pmode
+ * hpoll
+ * ppoll
+ * precision
+
+**configuration**
+
+Sample:
+
+```yaml
+update_every: 10
+
+host: 'localhost'
+port: '123'
+show_peers: yes
+# hide peers with source address in ranges 127.0.0.0/8 and 192.168.0.0/16
+peer_filter: '(127\..*)|(192\.168\..*)'
+# check for new/changed peers every 60 updates
+peer_rescan: 60
+```
+
+Sample (multiple jobs):
+
+Note: `ntp.conf` on the host `otherhost` must be configured to allow queries from our local host by including a line like `restrict <IP> nomodify notrap nopeer`.
+
+```yaml
+local:
+    host: 'localhost'
+
+otherhost:
+    host: 'otherhost'
+```
+
+If no configuration is given, module will attempt to connect to `ntpd` on `::1:123` or `127.0.0.1:123` and show charts for the systemvars. Use `show_peers: yes` to also show the charts for configured peers. Local peers in the range `127.0.0.0/8` are hidden by default, use `peer_filter: ''` to show all peers.
+
+---
diff --git a/python.d/ntpd.chart.py b/collectors/python.d.plugin/ntpd/ntpd.chart.py
index 05209da87..79d557c80 100644
--- a/python.d/ntpd.chart.py
+++ b/collectors/python.d.plugin/ntpd/ntpd.chart.py
@@ -2,6 +2,7 @@
 # Description: ntpd netdata python.d module
 # Author: Sven Mäder (rda0)
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import struct
 import re
@@ -56,108 +57,117 @@ CHARTS = {
         'options': [None, 'Combined offset of server relative to this host', 'ms', 'system', 'ntpd.sys_offset', 'area'],
         'lines': [
             ['offset', 'offset', 'absolute', 1, PRECISION]
-        ]},
+        ]
+    },
     'sys_jitter': {
         'options': [None, 'Combined system jitter and clock jitter', 'ms', 'system', 'ntpd.sys_jitter', 'line'],
         'lines': [
             ['sys_jitter', 'system', 'absolute', 1, PRECISION],
             ['clk_jitter', 'clock', 'absolute', 1, PRECISION]
-        ]},
+        ]
+    },
     'sys_frequency': {
         'options': [None, 'Frequency offset relative to hardware clock', 'ppm', 'system', 'ntpd.sys_frequency', 'area'],
         'lines': [
             ['frequency', 'frequency', 'absolute', 1, PRECISION]
-        ]},
+        ]
+    },
     'sys_wander': {
         'options': [None, 'Clock frequency wander', 'ppm', 'system', 'ntpd.sys_wander', 'area'],
         'lines': [
             ['clk_wander', 'clock', 'absolute', 1, PRECISION]
-        ]},
+        ]
+    },
     'sys_rootdelay': {
         'options': [None, 'Total roundtrip delay to the primary reference clock', 'ms', 'system',
                     'ntpd.sys_rootdelay', 'area'],
         'lines': [
             ['rootdelay', 'delay', 'absolute', 1, PRECISION]
-        ]},
+        ]
+    },
     'sys_rootdisp': {
         'options': [None, 'Total root dispersion to the primary reference clock', 'ms', 'system',
                     'ntpd.sys_rootdisp', 'area'],
         'lines': [
             ['rootdisp', 'dispersion', 'absolute', 1, PRECISION]
-        ]},
+        ]
+    },
     'sys_stratum': {
         'options': [None, 'Stratum (1-15)', 'stratum', 'system', 'ntpd.sys_stratum', 'line'],
         'lines': [
             ['stratum', 'stratum', 'absolute', 1, PRECISION]
-        ]},
+        ]
+    },
     'sys_tc': {
         'options': [None, 'Time constant and poll exponent (3-17)', 'log2 s', 'system', 'ntpd.sys_tc', 'line'],
         'lines': [
             ['tc', 'current', 'absolute', 1, PRECISION],
             ['mintc', 'minimum', 'absolute', 1, PRECISION]
-        ]},
+        ]
+    },
     'sys_precision': {
         'options': [None, 'Precision', 'log2 s', 'system', 'ntpd.sys_precision', 'line'],
         'lines': [
             ['precision', 'precision', 'absolute', 1, PRECISION]
-        ]}
+        ]
+    }
 }
 
 PEER_CHARTS = {
     'peer_offset': {
         'options': [None, 'Filter offset', 'ms', 'peers', 'ntpd.peer_offset', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_delay': {
         'options': [None, 'Filter delay', 'ms', 'peers', 'ntpd.peer_delay', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_dispersion': {
         'options': [None, 'Filter dispersion', 'ms', 'peers', 'ntpd.peer_dispersion', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_jitter': {
         'options': [None, 'Filter jitter', 'ms', 'peers', 'ntpd.peer_jitter', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_xleave': {
         'options': [None, 'Interleave delay', 'ms', 'peers', 'ntpd.peer_xleave', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_rootdelay': {
         'options': [None, 'Total roundtrip delay to the primary reference clock', 'ms', 'peers',
                     'ntpd.peer_rootdelay', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_rootdisp': {
         'options': [None, 'Total root dispersion to the primary reference clock', 'ms', 'peers',
                     'ntpd.peer_rootdisp', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_stratum': {
         'options': [None, 'Stratum (1-15)', 'stratum', 'peers', 'ntpd.peer_stratum', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_hmode': {
         'options': [None, 'Host mode (1-6)', 'hmode', 'peers', 'ntpd.peer_hmode', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_pmode': {
         'options': [None, 'Peer mode (1-5)', 'pmode', 'peers', 'ntpd.peer_pmode', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_hpoll': {
         'options': [None, 'Host poll exponent', 'log2 s', 'peers', 'ntpd.peer_hpoll', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_ppoll': {
         'options': [None, 'Peer poll exponent', 'log2 s', 'peers', 'ntpd.peer_ppoll', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'peer_precision': {
         'options': [None, 'Precision', 'log2 s', 'peers', 'ntpd.peer_precision', 'line'],
-        'lines': [
-        ]}
+        'lines': []
+    }
 }
 
 
diff --git a/conf.d/python.d/ntpd.conf b/collectors/python.d.plugin/ntpd/ntpd.conf
index 7adc4074b..7adc4074b 100644
--- a/conf.d/python.d/ntpd.conf
+++ b/collectors/python.d.plugin/ntpd/ntpd.conf
diff --git a/collectors/python.d.plugin/ovpn_status_log/Makefile.inc b/collectors/python.d.plugin/ovpn_status_log/Makefile.inc
new file mode 100644
index 000000000..1fbc506d6
--- /dev/null
+++ b/collectors/python.d.plugin/ovpn_status_log/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += ovpn_status_log/ovpn_status_log.chart.py
+dist_pythonconfig_DATA += ovpn_status_log/ovpn_status_log.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += ovpn_status_log/README.md ovpn_status_log/Makefile.inc
+
diff --git a/collectors/python.d.plugin/ovpn_status_log/README.md b/collectors/python.d.plugin/ovpn_status_log/README.md
new file mode 100644
index 000000000..be1ea279e
--- /dev/null
+++ b/collectors/python.d.plugin/ovpn_status_log/README.md
@@ -0,0 +1,32 @@
+# ovpn_status_log
+
+Module monitor openvpn-status log file.
+
+**Requirements:**
+
+ * If you are running multiple OpenVPN instances out of the same directory, MAKE SURE TO EDIT DIRECTIVES which create output files
+ so that multiple instances do not overwrite each other's output files.
+
+ * Make sure NETDATA USER CAN READ openvpn-status.log
+
+ * Update_every interval MUST MATCH interval on which OpenVPN writes operational status to log file.
+
+It produces:
+
+1. **Users** OpenVPN active users
+ * users
+
+2. **Traffic** OpenVPN overall bandwidth usage in kilobit/s
+ * in
+ * out
+
+### configuration
+
+Sample:
+
+```yaml
+default
+ log_path     : '/var/log/openvpn-status.log'
+```
+
+---
diff --git a/python.d/ovpn_status_log.chart.py b/collectors/python.d.plugin/ovpn_status_log/ovpn_status_log.chart.py
index 519c77fa3..64d7062d9 100644
--- a/python.d/ovpn_status_log.chart.py
+++ b/collectors/python.d.plugin/ovpn_status_log/ovpn_status_log.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: openvpn status log netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from re import compile as r_compile
 
@@ -16,15 +17,19 @@ CHARTS = {
         'options': [None, 'OpenVPN Active Users', 'active users', 'users', 'openvpn_status.users', 'line'],
         'lines': [
             ['users', None, 'absolute'],
-        ]},
+        ]
+    },
     'traffic': {
         'options': [None, 'OpenVPN Traffic', 'KB/s', 'traffic', 'openvpn_status.traffic', 'area'],
         'lines': [
             ['bytes_in', 'in', 'incremental', 1, 1 << 10], ['bytes_out', 'out', 'incremental', 1, -1 << 10]
-        ]},
-
+        ]
+    }
 }
 
+TLS_REGEX = r_compile(r'(?:[0-9a-f:]+|(?:\d{1,3}(?:\.\d{1,3}){3}(?::\d+)?)) (?P<bytes_in>\d+) (?P<bytes_out>\d+)')
+STATIC_KEY_REGEX = r_compile(r'TCP/[A-Z]+ (?P<direction>(?:read|write)) bytes,(?P<bytes>\d+)')
+
 
 class Service(SimpleService):
     def __init__(self, configuration=None, name=None):
@@ -32,8 +37,10 @@ class Service(SimpleService):
         self.order = ORDER
         self.definitions = CHARTS
         self.log_path = self.configuration.get('log_path')
-        self.regex = dict(tls=r_compile(r'\d{1,3}(?:\.\d{1,3}){3}(?::\d+)? (?P<bytes_in>\d+) (?P<bytes_out>\d+)'),
-                          static_key=r_compile(r'TCP/[A-Z]+ (?P<direction>(?:read|write)) bytes,(?P<bytes>\d+)'))
+        self.regex = {
+            'tls': TLS_REGEX,
+            'static_key': STATIC_KEY_REGEX
+        }
 
     def check(self):
         if not (self.log_path and isinstance(self.log_path, str)):
@@ -57,7 +64,7 @@ class Service(SimpleService):
                 break
         if found:
             return True
-        self.error("Failed to parse ovpenvpn log file")
+        self.error('Failed to parse ovpenvpn log file')
         return False
 
     def _get_raw_data(self):
@@ -107,8 +114,12 @@ class Service(SimpleService):
 
         data = dict(users=0, bytes_in=0, bytes_out=0)
         for row in raw_data:
-            row = ' '.join(row.split(',')) if ',' in row else ' '.join(row.split())
-            match = self.regex['tls'].search(row)
+            columns = row.split(',') if ',' in row else row.split()
+            if 'UNDEF' in columns:
+                # see https://openvpn.net/archive/openvpn-users/2004-08/msg00116.html
+                continue
+
+            match = self.regex['tls'].search(' '.join(columns))
             if match:
                 match = match.groupdict()
                 data['users'] += 1
diff --git a/conf.d/python.d/ovpn_status_log.conf b/collectors/python.d.plugin/ovpn_status_log/ovpn_status_log.conf
index 907f014f5..6fb35a530 100644
--- a/conf.d/python.d/ovpn_status_log.conf
+++ b/collectors/python.d.plugin/ovpn_status_log/ovpn_status_log.conf
@@ -88,8 +88,12 @@
 # # ps -C openvpn -o command=
 #       /usr/sbin/openvpn --daemon ovpn-server --status /run/openvpn/server.status 10 --cd /etc/openvpn --config /etc/openvpn/server.conf
 # 
+# 4. Confirm status is configured in your OpenVPN configuration.
+#     * Open OpenVPN config in an editor (e.g. sudo nano /etc/openvpn/default.conf)
+#     * Confirm status is enabled with below:
+#     status /var/log/openvpn-status.log
 #
 #default:
 # log_path: '/var/log/openvpn-status.log'
 #
-# ----------------------------------------------------------------------
\ No newline at end of file
+# ----------------------------------------------------------------------
diff --git a/collectors/python.d.plugin/phpfpm/Makefile.inc b/collectors/python.d.plugin/phpfpm/Makefile.inc
new file mode 100644
index 000000000..ff312fe18
--- /dev/null
+++ b/collectors/python.d.plugin/phpfpm/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += phpfpm/phpfpm.chart.py
+dist_pythonconfig_DATA += phpfpm/phpfpm.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += phpfpm/README.md phpfpm/Makefile.inc
+
diff --git a/collectors/python.d.plugin/phpfpm/README.md b/collectors/python.d.plugin/phpfpm/README.md
new file mode 100644
index 000000000..66930463f
--- /dev/null
+++ b/collectors/python.d.plugin/phpfpm/README.md
@@ -0,0 +1,40 @@
+# phpfpm
+
+This module will monitor one or more php-fpm instances depending on configuration.
+
+**Requirements:**
+ * php-fpm with enabled `status` page
+ * access to `status` page via web server
+
+It produces following charts:
+
+1. **Active Connections**
+ * active
+ * maxActive
+ * idle
+
+2. **Requests** in requests/s
+ * requests
+
+3. **Performance**
+ * reached
+ * slow
+
+### configuration
+
+Needs only `url` to server's `status`
+
+Here is an example for local instance:
+
+```yaml
+update_every : 3
+priority     : 90100
+
+local:
+  url     : 'http://localhost/status'
+  retries : 10
+```
+
+Without configuration, module attempts to connect to `http://localhost/status`
+
+---
diff --git a/python.d/phpfpm.chart.py b/collectors/python.d.plugin/phpfpm/phpfpm.chart.py
index ea7a9a7e6..a3f0963fc 100644
--- a/python.d/phpfpm.chart.py
+++ b/collectors/python.d.plugin/phpfpm/phpfpm.chart.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 # Description: PHP-FPM netdata python.d module
 # Author: Pawel Krupa (paulfantom)
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import json
 import re
@@ -58,18 +60,21 @@ CHARTS = {
             ['active'],
             ['maxActive', 'max active'],
             ['idle']
-        ]},
+        ]
+    },
     'requests': {
         'options': [None, 'PHP-FPM Requests', 'requests/s', 'requests', 'phpfpm.requests', 'line'],
         'lines': [
             ['requests', None, 'incremental']
-        ]},
+        ]
+    },
     'performance': {
         'options': [None, 'PHP-FPM Performance', 'status', 'performance', 'phpfpm.performance', 'line'],
         'lines': [
             ['reached', 'max children reached'],
             ['slow', 'slow requests']
-        ]},
+        ]
+    },
     'request_duration': {
         'options': [None, 'PHP-FPM Request Duration', 'milliseconds', 'request duration', 'phpfpm.request_duration',
                     'line'],
@@ -77,21 +82,24 @@ CHARTS = {
             ['minReqDur', 'min', 'absolute', 1, 1000],
             ['maxReqDur', 'max', 'absolute', 1, 1000],
             ['avgReqDur', 'avg', 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'request_cpu': {
         'options': [None, 'PHP-FPM Request CPU', 'percent', 'request CPU', 'phpfpm.request_cpu', 'line'],
         'lines': [
             ['minReqCpu', 'min'],
             ['maxReqCpu', 'max'],
             ['avgReqCpu', 'avg']
-        ]},
+        ]
+    },
     'request_mem': {
         'options': [None, 'PHP-FPM Request Memory', 'kilobytes', 'request memory', 'phpfpm.request_mem', 'line'],
         'lines': [
             ['minReqMem', 'min', 'absolute', 1, 1024],
             ['maxReqMem', 'max', 'absolute', 1, 1024],
             ['avgReqMem', 'avg', 'absolute', 1, 1024]
-        ]}
+        ]
+    }
 }
 
 
diff --git a/conf.d/python.d/phpfpm.conf b/collectors/python.d.plugin/phpfpm/phpfpm.conf
index 08688e2fa..571eb9156 100644
--- a/conf.d/python.d/phpfpm.conf
+++ b/collectors/python.d.plugin/phpfpm/phpfpm.conf
@@ -86,5 +86,5 @@ localipv4:
 
 localipv6:
   name : 'local'
-  url  : "http://::1/status?full&json"
+  url  : "http://[::1]/status?full&json"
 
diff --git a/collectors/python.d.plugin/portcheck/Makefile.inc b/collectors/python.d.plugin/portcheck/Makefile.inc
new file mode 100644
index 000000000..76763f02f
--- /dev/null
+++ b/collectors/python.d.plugin/portcheck/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += portcheck/portcheck.chart.py
+dist_pythonconfig_DATA += portcheck/portcheck.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += portcheck/README.md portcheck/Makefile.inc
+
diff --git a/collectors/python.d.plugin/portcheck/README.md b/collectors/python.d.plugin/portcheck/README.md
new file mode 100644
index 000000000..f1338d576
--- /dev/null
+++ b/collectors/python.d.plugin/portcheck/README.md
@@ -0,0 +1,35 @@
+# portcheck
+
+Module monitors a remote TCP service.
+
+Following charts are drawn per host:
+
+1. **Latency** ms
+ * Time required to connect to a TCP port.
+   Displays latency in 0.1 ms resolution. If the connection failed, the value is missing.
+
+2. **Status** boolean
+ * Connection successful
+ * Could not create socket: possible DNS problems
+ * Connection refused: port not listening or blocked
+ * Connection timed out: host or port unreachable
+
+
+### configuration
+
+```yaml
+server:
+  host: 'dns or ip'     # required
+  port: 22              # required
+  timeout: 1            # optional
+  update_every: 1       # optional
+```
+
+### notes
+
+ * The error chart is intended for alarms, badges or for access via API.
+ * A system/service/firewall might block netdata's access if a portscan or
+   similar is detected.
+ * Currently, the accuracy of the latency is low and should be used as reference only.
+
+---
diff --git a/python.d/portcheck.chart.py b/collectors/python.d.plugin/portcheck/portcheck.chart.py
index 0a312210d..e86f82544 100644
--- a/python.d/portcheck.chart.py
+++ b/collectors/python.d.plugin/portcheck/portcheck.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: simple port check netdata python.d module
 # Original Author: ccremer (github.com/ccremer)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import socket
 
@@ -36,7 +37,8 @@ CHARTS = {
             [PORT_SUCCESS, 'success', 'absolute'],
             [PORT_TIMEOUT, 'timeout', 'absolute'],
             [PORT_FAILED, 'no connection', 'absolute']
-        ]}
+        ]
+    }
 }
 
 
@@ -56,13 +58,13 @@ class Service(SimpleService):
         :return: boolean
         """
         if self.host is None or self.port is None:
-            self.error("Host or port missing")
+            self.error('Host or port missing')
             return False
         if not isinstance(self.port, int):
             self.error('"port" is not an integer. Specify a numerical value, not service name.')
             return False
 
-        self.debug("Enabled portcheck: {host}:{port}, update every {update}s, timeout: {timeout}s".format(
+        self.debug('Enabled portcheck: {host}:{port}, update every {update}s, timeout: {timeout}s'.format(
             host=self.host, port=self.port, update=self.update_every, timeout=self.timeout
         ))
         # We will accept any (valid-ish) configuration, even if initial connection fails (a service might be down from
@@ -101,7 +103,7 @@ class Service(SimpleService):
         return data
 
     def _create_socket(self, socket_config):
-        af, sock_type, proto, canon_name, sa = socket_config
+        af, sock_type, proto, _, sa = socket_config
         try:
             self.debug('Creating socket to "{address}", port {port}'.format(address=sa[0], port=sa[1]))
             sock = socket.socket(af, sock_type, proto)
@@ -119,7 +121,7 @@ class Service(SimpleService):
         :return: dict
         """
 
-        af, sock_type, proto, canon_name, sa = socket_config
+        af, _, proto, _, sa = socket_config
         port = str(sa[1])
         try:
             self.debug('Connecting socket to "{address}", port {port}'.format(address=sa[0], port=port))
diff --git a/conf.d/python.d/portcheck.conf b/collectors/python.d.plugin/portcheck/portcheck.conf
index b3dd8bd3f..b3dd8bd3f 100644
--- a/conf.d/python.d/portcheck.conf
+++ b/collectors/python.d.plugin/portcheck/portcheck.conf
diff --git a/collectors/python.d.plugin/postfix/Makefile.inc b/collectors/python.d.plugin/postfix/Makefile.inc
new file mode 100644
index 000000000..f4091b217
--- /dev/null
+++ b/collectors/python.d.plugin/postfix/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += postfix/postfix.chart.py
+dist_pythonconfig_DATA += postfix/postfix.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += postfix/README.md postfix/Makefile.inc
+
diff --git a/collectors/python.d.plugin/postfix/README.md b/collectors/python.d.plugin/postfix/README.md
new file mode 100644
index 000000000..77c95ff44
--- /dev/null
+++ b/collectors/python.d.plugin/postfix/README.md
@@ -0,0 +1,15 @@
+# postfix
+
+Simple module executing `postfix -p` to grab postfix queue.
+
+It produces only two charts:
+
+1. **Postfix Queue Emails**
+ * emails
+
+2. **Postfix Queue Emails Size** in KB
+ * size
+
+Configuration is not needed.
+
+---
diff --git a/python.d/postfix.chart.py b/collectors/python.d.plugin/postfix/postfix.chart.py
index a2129e4be..bdbd0feea 100644
--- a/python.d/postfix.chart.py
+++ b/collectors/python.d.plugin/postfix/postfix.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: postfix netdata python.d module
 # Author: Pawel Krupa (paulfantom)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.FrameworkServices.ExecutableService import ExecutableService
 
@@ -14,22 +15,24 @@ ORDER = ['qemails', 'qsize']
 
 CHARTS = {
     'qemails': {
-        'options': [None, "Postfix Queue Emails", "emails", 'queue', 'postfix.qemails', 'line'],
+        'options': [None, 'Postfix Queue Emails', 'emails', 'queue', 'postfix.qemails', 'line'],
         'lines': [
             ['emails', None, 'absolute']
-        ]},
+        ]
+    },
     'qsize': {
-        'options': [None, "Postfix Queue Emails Size", "emails size in KB", 'queue', 'postfix.qsize', 'area'],
+        'options': [None, 'Postfix Queue Emails Size', 'emails size in KB', 'queue', 'postfix.qsize', 'area'],
         'lines': [
-            ["size", None, 'absolute']
-        ]}
+            ['size', None, 'absolute']
+        ]
+    }
 }
 
 
 class Service(ExecutableService):
     def __init__(self, configuration=None, name=None):
         ExecutableService.__init__(self, configuration=configuration, name=name)
-        self.command = "postqueue -p"
+        self.command = 'postqueue -p'
         self.order = ORDER
         self.definitions = CHARTS
 
diff --git a/conf.d/python.d/postfix.conf b/collectors/python.d.plugin/postfix/postfix.conf
index e0d5a5f83..e0d5a5f83 100644
--- a/conf.d/python.d/postfix.conf
+++ b/collectors/python.d.plugin/postfix/postfix.conf
diff --git a/collectors/python.d.plugin/postgres/Makefile.inc b/collectors/python.d.plugin/postgres/Makefile.inc
new file mode 100644
index 000000000..91a185cb9
--- /dev/null
+++ b/collectors/python.d.plugin/postgres/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += postgres/postgres.chart.py
+dist_pythonconfig_DATA += postgres/postgres.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += postgres/README.md postgres/Makefile.inc
+
diff --git a/collectors/python.d.plugin/postgres/README.md b/collectors/python.d.plugin/postgres/README.md
new file mode 100644
index 000000000..e7b108d36
--- /dev/null
+++ b/collectors/python.d.plugin/postgres/README.md
@@ -0,0 +1,68 @@
+# postgres
+
+Module monitors one or more postgres servers.
+
+**Requirements:**
+
+ * `python-psycopg2` package. You have to install it manually.
+
+Following charts are drawn:
+
+1. **Database size** MB
+ * size
+
+2. **Current Backend Processes** processes
+ * active
+
+3. **Write-Ahead Logging Statistics** files/s
+ * total
+ * ready
+ * done
+
+4. **Checkpoints** writes/s
+ * scheduled
+ * requested
+
+5. **Current connections to db** count
+ * connections
+
+6. **Tuples returned from db** tuples/s
+ * sequential
+ * bitmap
+
+7. **Tuple reads from db** reads/s
+ * disk
+ * cache
+
+8. **Transactions on db** transactions/s
+ * committed
+ * rolled back
+
+9. **Tuples written to db** writes/s
+ * inserted
+ * updated
+ * deleted
+ * conflicts
+
+10. **Locks on db** count per type
+ * locks
+
+### configuration
+
+```yaml
+socket:
+  name         : 'socket'
+  user         : 'postgres'
+  database     : 'postgres'
+
+tcp:
+  name         : 'tcp'
+  user         : 'postgres'
+  database     : 'postgres'
+  host         : 'localhost'
+  port         : 5432
+```
+
+When no configuration file is found, module tries to connect to TCP/IP socket: `localhost:5432`.
+
+---
diff --git a/python.d/postgres.chart.py b/collectors/python.d.plugin/postgres/postgres.chart.py
index 0522b1938..7f43877c3 100644
--- a/python.d/postgres.chart.py
+++ b/collectors/python.d.plugin/postgres/postgres.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: example netdata python.d module
 # Authors: facetoe, dangtranhoang
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from copy import deepcopy
 
@@ -20,221 +21,310 @@ update_every = 1
 priority = 60000
 retries = 60
 
-METRICS = dict(
-    DATABASE=['connections',
-              'xact_commit',
-              'xact_rollback',
-              'blks_read',
-              'blks_hit',
-              'tup_returned',
-              'tup_fetched',
-              'tup_inserted',
-              'tup_updated',
-              'tup_deleted',
-              'conflicts',
-              'temp_files',
-              'temp_bytes',
-              'size'],
-    BACKENDS=['backends_active',
-              'backends_idle'],
-    INDEX_STATS=['index_count',
-                 'index_size'],
-    TABLE_STATS=['table_size',
-                 'table_count'],
-    WAL=['written_wal',
-         'recycled_wal',
-         'total_wal'],
-    WAL_WRITES=['wal_writes'],
-    ARCHIVE=['ready_count',
-             'done_count',
-             'file_count'],
-    BGWRITER=['checkpoint_scheduled',
-              'checkpoint_requested',
-              'buffers_checkpoint',
-              'buffers_clean',
-              'maxwritten_clean',
-              'buffers_backend',
-              'buffers_alloc',
-              'buffers_backend_fsync'],
-    LOCKS=['ExclusiveLock',
-           'RowShareLock',
-           'SIReadLock',
-           'ShareUpdateExclusiveLock',
-           'AccessExclusiveLock',
-           'AccessShareLock',
-           'ShareRowExclusiveLock',
-           'ShareLock',
-           'RowExclusiveLock'],
-    AUTOVACUUM=['analyze',
-                'vacuum_analyze',
-                'vacuum',
-                'vacuum_freeze',
-                'brin_summarize'],
-    STANDBY_DELTA=['sent_delta',
-                       'write_delta',
-                       'flush_delta',
-                       'replay_delta'],
-    REPSLOT_FILES=['replslot_wal_keep',
-                   'replslot_files']
-
-)
-
-QUERIES = dict(
-    WAL="""
+METRICS = {
+    'DATABASE': [
+        'connections',
+        'xact_commit',
+        'xact_rollback',
+        'blks_read',
+        'blks_hit',
+        'tup_returned',
+        'tup_fetched',
+        'tup_inserted',
+        'tup_updated',
+        'tup_deleted',
+        'conflicts',
+        'temp_files',
+        'temp_bytes',
+        'size'
+    ],
+    'BACKENDS': [
+        'backends_active',
+        'backends_idle'
+    ],
+    'INDEX_STATS': [
+        'index_count',
+        'index_size'
+    ],
+    'TABLE_STATS': [
+        'table_size',
+        'table_count'
+    ],
+    'WAL': [
+        'written_wal',
+        'recycled_wal',
+        'total_wal'
+    ],
+    'WAL_WRITES': [
+        'wal_writes'
+    ],
+    'ARCHIVE': [
+        'ready_count',
+        'done_count',
+        'file_count'
+    ],
+    'BGWRITER': [
+        'checkpoint_scheduled',
+        'checkpoint_requested',
+        'buffers_checkpoint',
+        'buffers_clean',
+        'maxwritten_clean',
+        'buffers_backend',
+        'buffers_alloc',
+        'buffers_backend_fsync'
+    ],
+    'LOCKS': [
+        'ExclusiveLock',
+        'RowShareLock',
+        'SIReadLock',
+        'ShareUpdateExclusiveLock',
+        'AccessExclusiveLock',
+        'AccessShareLock',
+        'ShareRowExclusiveLock',
+        'ShareLock',
+        'RowExclusiveLock'
+    ],
+    'AUTOVACUUM': [
+        'analyze',
+        'vacuum_analyze',
+        'vacuum',
+        'vacuum_freeze',
+        'brin_summarize'
+    ],
+    'STANDBY_DELTA': [
+        'sent_delta',
+        'write_delta',
+        'flush_delta',
+        'replay_delta'
+    ],
+    'REPSLOT_FILES': [
+        'replslot_wal_keep',
+        'replslot_files'
+    ]
+}
+
+QUERIES = {
+    'WAL': """
 SELECT
-  count(*) as total_wal,
-  count(*) FILTER (WHERE type = 'recycled') AS recycled_wal,
-  count(*) FILTER (WHERE type = 'written') AS written_wal
+    count(*) as total_wal,
+    count(*) FILTER (WHERE type = 'recycled') AS recycled_wal,
+    count(*) FILTER (WHERE type = 'written') AS written_wal
 FROM
-  (SELECT wal.name,
-     pg_{0}file_name(CASE pg_is_in_recovery() WHEN true THEN NULL ELSE pg_current_{0}_{1}() END ),
-     CASE WHEN wal.name > pg_{0}file_name(CASE pg_is_in_recovery() WHEN true THEN NULL ELSE pg_current_{0}_{1}() END ) THEN 'recycled'
-       ELSE 'written'
-     END AS type
-  FROM pg_catalog.pg_ls_dir('pg_{0}') AS wal(name)
-  WHERE name ~ '^[0-9A-F]{{24}}$'
-  ORDER BY (pg_stat_file('pg_{0}/'||name)).modification, wal.name DESC) sub;
+    (SELECT
+        wal.name,
+        pg_{0}file_name(
+          CASE pg_is_in_recovery()
+            WHEN true THEN NULL
+            ELSE pg_current_{0}_{1}()
+          END ),
+        CASE
+          WHEN wal.name > pg_{0}file_name(
+            CASE pg_is_in_recovery()
+              WHEN true THEN NULL
+              ELSE pg_current_{0}_{1}()
+            END ) THEN 'recycled'
+          ELSE 'written'
+        END AS type
+    FROM pg_catalog.pg_ls_dir('pg_{0}') AS wal(name)
+    WHERE name ~ '^[0-9A-F]{{24}}$'
+    ORDER BY
+        (pg_stat_file('pg_{0}/'||name)).modification,
+        wal.name DESC) sub;
 """,
-    ARCHIVE="""
+    'ARCHIVE': """
 SELECT
     CAST(COUNT(*) AS INT) AS file_count,
-    CAST(COALESCE(SUM(CAST(archive_file ~ $r$\.ready$$r$ as INT)), 0) AS INT) AS ready_count,
-    CAST(COALESCE(SUM(CAST(archive_file ~ $r$\.done$$r$ AS INT)), 0) AS INT) AS done_count
+    CAST(COALESCE(SUM(CAST(archive_file ~ $r$\.ready$$r$ as INT)),0) AS INT) AS ready_count,
+    CAST(COALESCE(SUM(CAST(archive_file ~ $r$\.done$$r$ AS INT)),0) AS INT) AS done_count
 FROM
     pg_catalog.pg_ls_dir('pg_{0}/archive_status') AS archive_files (archive_file);
 """,
-    BACKENDS="""
+    'BACKENDS': """
 SELECT
-    count(*) - (SELECT count(*) FROM pg_stat_activity WHERE state = 'idle') AS backends_active,
-    (SELECT count(*) FROM pg_stat_activity WHERE state = 'idle' ) AS backends_idle
-FROM  pg_stat_activity;
+    count(*) - (SELECT  count(*)
+                FROM pg_stat_activity
+                WHERE state = 'idle')
+      AS backends_active,
+    (SELECT count(*)
+     FROM pg_stat_activity
+     WHERE state = 'idle')
+      AS backends_idle
+FROM pg_stat_activity;
 """,
-    TABLE_STATS="""
+    'TABLE_STATS': """
 SELECT
-  ((sum(relpages) * 8) * 1024) AS table_size,
-  count(1)                     AS table_count
+    ((sum(relpages) * 8) * 1024) AS table_size,
+    count(1)                     AS table_count
 FROM pg_class
 WHERE relkind IN ('r', 't');
 """,
-    INDEX_STATS="""
+    'INDEX_STATS': """
 SELECT
-  ((sum(relpages) * 8) * 1024) AS index_size,
-  count(1)                     AS index_count
+    ((sum(relpages) * 8) * 1024) AS index_size,
+    count(1)                     AS index_count
 FROM pg_class
-WHERE relkind = 'i';""",
-    DATABASE="""
+WHERE relkind = 'i';
+""",
+    'DATABASE': """
 SELECT
-  datname AS database_name,
-  numbackends AS connections,
-  xact_commit AS xact_commit,
-  xact_rollback AS xact_rollback,
-  blks_read AS blks_read,
-  blks_hit AS blks_hit,
-  tup_returned AS tup_returned,
-  tup_fetched AS tup_fetched,
-  tup_inserted AS tup_inserted,
-  tup_updated AS tup_updated,
-  tup_deleted AS tup_deleted,
-  conflicts AS conflicts,
-  pg_database_size(datname) AS size,
-  temp_files AS temp_files,
-  temp_bytes AS temp_bytes
+    datname AS database_name,
+    numbackends AS connections,
+    xact_commit AS xact_commit,
+    xact_rollback AS xact_rollback,
+    blks_read AS blks_read,
+    blks_hit AS blks_hit,
+    tup_returned AS tup_returned,
+    tup_fetched AS tup_fetched,
+    tup_inserted AS tup_inserted,
+    tup_updated AS tup_updated,
+    tup_deleted AS tup_deleted,
+    conflicts AS conflicts,
+    pg_database_size(datname) AS size,
+    temp_files AS temp_files,
+    temp_bytes AS temp_bytes
 FROM pg_stat_database
-WHERE datname IN %(databases)s
-;
+WHERE datname IN %(databases)s ;
 """,
-    BGWRITER="""
+    'BGWRITER': """
 SELECT
-  checkpoints_timed AS checkpoint_scheduled,
-  checkpoints_req AS checkpoint_requested,
-  buffers_checkpoint * current_setting('block_size')::numeric buffers_checkpoint,
-  buffers_clean * current_setting('block_size')::numeric buffers_clean,
-  maxwritten_clean,
-  buffers_backend * current_setting('block_size')::numeric buffers_backend,
-  buffers_alloc * current_setting('block_size')::numeric buffers_alloc,
-  buffers_backend_fsync
+    checkpoints_timed AS checkpoint_scheduled,
+    checkpoints_req AS checkpoint_requested,
+    buffers_checkpoint * current_setting('block_size')::numeric buffers_checkpoint,
+    buffers_clean * current_setting('block_size')::numeric buffers_clean,
+    maxwritten_clean,
+    buffers_backend * current_setting('block_size')::numeric buffers_backend,
+    buffers_alloc * current_setting('block_size')::numeric buffers_alloc,
+    buffers_backend_fsync
 FROM pg_stat_bgwriter;
 """,
-    LOCKS="""
+    'LOCKS': """
 SELECT
-  pg_database.datname as database_name,
-  mode,
-  count(mode) AS locks_count
+    pg_database.datname as database_name,
+    mode,
+    count(mode) AS locks_count
 FROM pg_locks
-  INNER JOIN pg_database ON pg_database.oid = pg_locks.database
+INNER JOIN pg_database
+    ON pg_database.oid = pg_locks.database
 GROUP BY datname, mode
 ORDER BY datname, mode;
 """,
-    FIND_DATABASES="""
-SELECT datname
+    'FIND_DATABASES': """
+SELECT
+    datname
 FROM pg_stat_database
-WHERE has_database_privilege((SELECT current_user), datname, 'connect')
-AND NOT datname ~* '^template\d+';
+WHERE
+    has_database_privilege(
+      (SELECT current_user), datname, 'connect')
+    AND NOT datname ~* '^template\d ';
 """,
-    FIND_STANDBY="""
-SELECT application_name
+    'FIND_STANDBY': """
+SELECT
+    application_name
 FROM pg_stat_replication
 WHERE application_name IS NOT NULL
 GROUP BY application_name;
 """,
-    FIND_REPLICATION_SLOT="""
+    'FIND_REPLICATION_SLOT': """
 SELECT slot_name
 FROM pg_replication_slots;
 """,
-    STANDBY_DELTA="""
-SELECT application_name,
-  pg_{0}_{1}_diff(CASE pg_is_in_recovery() WHEN true THEN pg_last_{0}_receive_{1}() ELSE pg_current_{0}_{1}() END , sent_{1}) AS sent_delta,
-  pg_{0}_{1}_diff(CASE pg_is_in_recovery() WHEN true THEN pg_last_{0}_receive_{1}() ELSE pg_current_{0}_{1}() END , write_{1}) AS write_delta,
-  pg_{0}_{1}_diff(CASE pg_is_in_recovery() WHEN true THEN pg_last_{0}_receive_{1}() ELSE pg_current_{0}_{1}() END , flush_{1}) AS flush_delta,
-  pg_{0}_{1}_diff(CASE pg_is_in_recovery() WHEN true THEN pg_last_{0}_receive_{1}() ELSE pg_current_{0}_{1}() END , replay_{1}) AS replay_delta
+    'STANDBY_DELTA': """
+SELECT
+    application_name,
+    pg_{0}_{1}_diff(
+      CASE pg_is_in_recovery()
+        WHEN true THEN pg_last_{0}_receive_{1}()
+        ELSE pg_current_{0}_{1}()
+      END,
+    sent_{1}) AS sent_delta,
+    pg_{0}_{1}_diff(
+      CASE pg_is_in_recovery()
+        WHEN true THEN pg_last_{0}_receive_{1}()
+        ELSE pg_current_{0}_{1}()
+      END,
+    write_{1}) AS write_delta,
+    pg_{0}_{1}_diff(
+      CASE pg_is_in_recovery()
+        WHEN true THEN pg_last_{0}_receive_{1}()
+        ELSE pg_current_{0}_{1}()
+      END,
+    flush_{1}) AS flush_delta,
+    pg_{0}_{1}_diff(
+      CASE pg_is_in_recovery()
+        WHEN true THEN pg_last_{0}_receive_{1}()
+        ELSE pg_current_{0}_{1}()
+      END,
+    replay_{1}) AS replay_delta
 FROM pg_stat_replication
 WHERE application_name IS NOT NULL;
 """,
-    REPSLOT_FILES="""
+    'REPSLOT_FILES': """
 WITH wal_size AS (
-    SELECT current_setting('wal_block_size')::INT * setting::INT AS val
-    FROM pg_settings
-    WHERE name = 'wal_segment_size'
-)
-SELECT slot_name, slot_type, replslot_wal_keep, count(slot_file) AS replslot_files
-FROM (
-  SELECT slot.slot_name, CASE WHEN slot_file <> 'state' THEN 1 END AS slot_file , slot_type,
-    COALESCE (floor((pg_wal_lsn_diff (pg_current_wal_lsn (),
-              slot.restart_lsn) - (pg_walfile_name_offset (restart_lsn)).file_offset) / (s.val)),
-            0) AS replslot_wal_keep
-  FROM pg_replication_slots slot
-  LEFT JOIN (
-    SELECT slot2.slot_name,
-           pg_ls_dir('pg_replslot/' || slot2.slot_name) AS slot_file
-      FROM pg_replication_slots slot2
-    ) files (slot_name, slot_file)
-   ON slot.slot_name = files.slot_name
-  CROSS JOIN wal_size s) AS d
-GROUP BY slot_name, slot_type, replslot_wal_keep;
+  SELECT
+    current_setting('wal_block_size')::INT * setting::INT AS val
+  FROM pg_settings
+  WHERE name = 'wal_segment_size'
+  )
+SELECT
+    slot_name,
+    slot_type,
+    replslot_wal_keep,
+    count(slot_file) AS replslot_files
+FROM
+    (SELECT
+        slot.slot_name,
+        CASE
+            WHEN slot_file <> 'state' THEN 1
+        END AS slot_file ,
+        slot_type,
+        COALESCE (
+          floor(
+            (pg_wal_lsn_diff(pg_current_wal_lsn (),slot.restart_lsn)
+             - (pg_walfile_name_offset (restart_lsn)).file_offset) / (s.val)
+          ),0) AS replslot_wal_keep
+    FROM pg_replication_slots slot
+    LEFT JOIN (
+        SELECT
+            slot2.slot_name,
+            pg_ls_dir('pg_replslot/' || slot2.slot_name) AS slot_file
+        FROM pg_replication_slots slot2
+        ) files (slot_name, slot_file)
+        ON slot.slot_name = files.slot_name
+    CROSS JOIN wal_size s
+    ) AS d
+GROUP BY
+    slot_name,
+    slot_type,
+    replslot_wal_keep;
 """,
-    IF_SUPERUSER="""
+    'IF_SUPERUSER': """
 SELECT current_setting('is_superuser') = 'on' AS is_superuser;
 """,
-    DETECT_SERVER_VERSION="""
+    'DETECT_SERVER_VERSION': """
 SHOW server_version_num;
 """,
-    AUTOVACUUM="""
+    'AUTOVACUUM': """
 SELECT
-  count(*) FILTER (WHERE query LIKE  'autovacuum: ANALYZE%%') AS analyze,
-  count(*) FILTER (WHERE query LIKE  'autovacuum: VACUUM ANALYZE%%') AS vacuum_analyze,
-  count(*) FILTER (WHERE query LIKE  'autovacuum: VACUUM%%'
-                     AND query NOT LIKE  'autovacuum: VACUUM ANALYZE%%'
-                     AND query NOT LIKE  '%%to prevent wraparound%%') AS vacuum,
-  count(*) FILTER (WHERE query LIKE  '%%to prevent wraparound%%') AS vacuum_freeze,
-  count(*) FILTER (WHERE query LIKE  'autovacuum: BRIN summarize%%') AS brin_summarize
+    count(*) FILTER (WHERE query LIKE 'autovacuum: ANALYZE%%') AS analyze,
+    count(*) FILTER (WHERE query LIKE 'autovacuum: VACUUM ANALYZE%%') AS vacuum_analyze,
+    count(*) FILTER (WHERE query LIKE 'autovacuum: VACUUM%%'
+                       AND query NOT LIKE 'autovacuum: VACUUM ANALYZE%%'
+                       AND query NOT LIKE '%%to prevent wraparound%%') AS vacuum,
+    count(*) FILTER (WHERE query LIKE '%%to prevent wraparound%%') AS vacuum_freeze,
+    count(*) FILTER (WHERE query LIKE 'autovacuum: BRIN summarize%%') AS brin_summarize
 FROM pg_stat_activity
 WHERE query NOT LIKE '%%pg_stat_activity%%';
 """,
-    DIFF_LSN="""
-SELECT pg_{0}_{1}_diff(CASE pg_is_in_recovery() WHEN true THEN pg_last_{0}_receive_{1}() ELSE pg_current_{0}_{1}() END, '0/0') as wal_writes ;
+    'DIFF_LSN': """
+SELECT
+    pg_{0}_{1}_diff(
+      CASE pg_is_in_recovery()
+        WHEN true THEN pg_last_{0}_receive_{1}()
+        ELSE pg_current_{0}_{1}()
+      END,
+    '0/0') as wal_writes ;
 """
-
-)
+}
 
 
 QUERY_STATS = {
@@ -243,11 +333,34 @@ QUERY_STATS = {
     QUERIES['LOCKS']: METRICS['LOCKS']
 }
 
-ORDER = ['db_stat_temp_files', 'db_stat_temp_bytes', 'db_stat_blks', 'db_stat_tuple_returned', 'db_stat_tuple_write',
-         'db_stat_transactions','db_stat_connections', 'database_size', 'backend_process', 'index_count', 'index_size',
-         'table_count', 'table_size', 'wal', 'wal_writes', 'archive_wal', 'checkpointer', 'stat_bgwriter_alloc', 'stat_bgwriter_checkpoint',
-         'stat_bgwriter_backend', 'stat_bgwriter_backend_fsync' , 'stat_bgwriter_bgwriter', 'stat_bgwriter_maxwritten',
-         'replication_slot', 'standby_delta', 'autovacuum']
+ORDER = [
+    'db_stat_temp_files',
+    'db_stat_temp_bytes',
+    'db_stat_blks',
+    'db_stat_tuple_returned',
+    'db_stat_tuple_write',
+    'db_stat_transactions',
+    'db_stat_connections',
+    'database_size',
+    'backend_process',
+    'index_count',
+    'index_size',
+    'table_count',
+    'table_size',
+    'wal',
+    'wal_writes',
+    'archive_wal',
+    'checkpointer',
+    'stat_bgwriter_alloc',
+    'stat_bgwriter_checkpoint',
+    'stat_bgwriter_backend',
+    'stat_bgwriter_backend_fsync',
+    'stat_bgwriter_bgwriter',
+    'stat_bgwriter_maxwritten',
+    'replication_slot',
+    'standby_delta',
+    'autovacuum'
+]
 
 CHARTS = {
     'db_stat_transactions': {
@@ -256,26 +369,30 @@ CHARTS = {
         'lines': [
             ['xact_commit', 'committed', 'incremental'],
             ['xact_rollback', 'rolled back', 'incremental']
-        ]},
+        ]
+    },
     'db_stat_connections': {
         'options': [None, 'Current connections to db', 'count', 'db statistics', 'postgres.db_stat_connections',
                     'line'],
         'lines': [
             ['connections', 'connections', 'absolute']
-        ]},
+        ]
+    },
     'db_stat_blks': {
         'options': [None, 'Disk blocks reads from db', 'reads/s', 'db statistics', 'postgres.db_stat_blks', 'line'],
         'lines': [
             ['blks_read', 'disk', 'incremental'],
             ['blks_hit', 'cache', 'incremental']
-        ]},
+        ]
+    },
     'db_stat_tuple_returned': {
         'options': [None, 'Tuples returned from db', 'tuples/s', 'db statistics', 'postgres.db_stat_tuple_returned',
                     'line'],
         'lines': [
             ['tup_returned', 'sequential', 'incremental'],
             ['tup_fetched', 'bitmap', 'incremental']
-        ]},
+        ]
+    },
     'db_stat_tuple_write': {
         'options': [None, 'Tuples written to db', 'writes/s', 'db statistics', 'postgres.db_stat_tuple_write', 'line'],
         'lines': [
@@ -283,103 +400,128 @@ CHARTS = {
             ['tup_updated', 'updated', 'incremental'],
             ['tup_deleted', 'deleted', 'incremental'],
             ['conflicts', 'conflicts', 'incremental']
-        ]},
+        ]
+    },
     'db_stat_temp_bytes': {
-        'options': [None, 'Temp files written to disk', 'KB/s', 'db statistics', 'postgres.db_stat_temp_bytes', 'line'],
+        'options': [None, 'Temp files written to disk', 'KB/s', 'db statistics', 'postgres.db_stat_temp_bytes',
+                    'line'],
         'lines': [
             ['temp_bytes', 'size', 'incremental', 1, 1024]
-        ]},
+        ]
+    },
     'db_stat_temp_files': {
-        'options': [None, 'Temp files written to disk', 'files', 'db statistics', 'postgres.db_stat_temp_files', 'line'],
+        'options': [None, 'Temp files written to disk', 'files', 'db statistics', 'postgres.db_stat_temp_files',
+                    'line'],
         'lines': [
             ['temp_files', 'files', 'incremental']
-        ]},
+        ]
+    },
     'database_size': {
         'options': [None, 'Database size', 'MB', 'database size', 'postgres.db_size', 'stacked'],
         'lines': [
-        ]},
+        ]
+    },
     'backend_process': {
         'options': [None, 'Current Backend Processes', 'processes', 'backend processes', 'postgres.backend_process',
                     'line'],
         'lines': [
             ['backends_active', 'active', 'absolute'],
             ['backends_idle', 'idle', 'absolute']
-        ]},
+        ]
+    },
     'index_count': {
         'options': [None, 'Total indexes', 'index', 'indexes', 'postgres.index_count', 'line'],
         'lines': [
             ['index_count', 'total', 'absolute']
-        ]},
+        ]
+    },
     'index_size': {
         'options': [None, 'Indexes size', 'MB', 'indexes', 'postgres.index_size', 'line'],
         'lines': [
             ['index_size', 'size', 'absolute', 1, 1024 * 1024]
-        ]},
+        ]
+    },
     'table_count': {
         'options': [None, 'Total Tables', 'tables', 'tables', 'postgres.table_count', 'line'],
         'lines': [
             ['table_count', 'total', 'absolute']
-        ]},
+        ]
+    },
     'table_size': {
         'options': [None, 'Tables size', 'MB', 'tables', 'postgres.table_size', 'line'],
         'lines': [
             ['table_size', 'size', 'absolute', 1, 1024 * 1024]
-        ]},
+        ]
+    },
     'wal': {
         'options': [None, 'Write-Ahead Logs', 'files', 'wal', 'postgres.wal', 'line'],
         'lines': [
             ['written_wal', 'written', 'absolute'],
             ['recycled_wal', 'recycled', 'absolute'],
             ['total_wal', 'total', 'absolute']
-        ]},
+        ]
+    },
     'wal_writes': {
         'options': [None, 'Write-Ahead Logs', 'kilobytes/s', 'wal_writes', 'postgres.wal_writes', 'line'],
         'lines': [
             ['wal_writes', 'writes', 'incremental', 1, 1024]
-        ]},
+        ]
+    },
     'archive_wal': {
         'options': [None, 'Archive Write-Ahead Logs', 'files/s', 'archive wal', 'postgres.archive_wal', 'line'],
         'lines': [
             ['file_count', 'total', 'incremental'],
             ['ready_count', 'ready', 'incremental'],
             ['done_count', 'done', 'incremental']
-        ]},
+        ]
+    },
     'checkpointer': {
         'options': [None, 'Checkpoints', 'writes', 'checkpointer', 'postgres.checkpointer', 'line'],
         'lines': [
             ['checkpoint_scheduled', 'scheduled', 'incremental'],
             ['checkpoint_requested', 'requested', 'incremental']
-        ]},
+        ]
+    },
     'stat_bgwriter_alloc': {
         'options': [None, 'Buffers allocated', 'kilobytes/s', 'bgwriter', 'postgres.stat_bgwriter_alloc', 'line'],
         'lines': [
             ['buffers_alloc', 'alloc', 'incremental', 1, 1024]
-        ]},
+        ]
+    },
     'stat_bgwriter_checkpoint': {
-        'options': [None, 'Buffers written during checkpoints', 'kilobytes/s', 'bgwriter', 'postgres.stat_bgwriter_checkpoint', 'line'],
+        'options': [None, 'Buffers written during checkpoints', 'kilobytes/s', 'bgwriter',
+                    'postgres.stat_bgwriter_checkpoint', 'line'],
         'lines': [
             ['buffers_checkpoint', 'checkpoint', 'incremental', 1, 1024]
-        ]},
+        ]
+    },
     'stat_bgwriter_backend': {
-        'options': [None, 'Buffers written directly by a backend', 'kilobytes/s', 'bgwriter', 'postgres.stat_bgwriter_backend', 'line'],
+        'options': [None, 'Buffers written directly by a backend', 'kilobytes/s', 'bgwriter',
+                    'postgres.stat_bgwriter_backend', 'line'],
         'lines': [
             ['buffers_backend', 'backend', 'incremental', 1, 1024]
-        ]},
+        ]
+    },
     'stat_bgwriter_backend_fsync': {
         'options': [None, 'Fsync by backend', 'times', 'bgwriter', 'postgres.stat_bgwriter_backend_fsync', 'line'],
         'lines': [
             ['buffers_backend_fsync', 'backend fsync', 'incremental']
-        ]},
+        ]
+    },
     'stat_bgwriter_bgwriter': {
-        'options': [None, 'Buffers written by the background writer', 'kilobytes/s', 'bgwriter', 'postgres.bgwriter_bgwriter', 'line'],
+        'options': [None, 'Buffers written by the background writer', 'kilobytes/s', 'bgwriter',
+                    'postgres.bgwriter_bgwriter', 'line'],
         'lines': [
             ['buffers_clean', 'clean', 'incremental', 1, 1024]
-        ]},
+        ]
+    },
     'stat_bgwriter_maxwritten': {
-        'options': [None, 'Too many buffers written', 'times', 'bgwriter', 'postgres.stat_bgwriter_maxwritten', 'line'],
+        'options': [None, 'Too many buffers written', 'times', 'bgwriter', 'postgres.stat_bgwriter_maxwritten',
+                    'line'],
         'lines': [
             ['maxwritten_clean', 'maxwritten', 'incremental']
-        ]},
+        ]
+    },
     'autovacuum': {
         'options': [None, 'Autovacuum workers', 'workers', 'autovacuum', 'postgres.autovacuum', 'line'],
         'lines': [
@@ -388,7 +530,8 @@ CHARTS = {
             ['vacuum_analyze', 'vacuum analyze', 'absolute'],
             ['vacuum_freeze', 'vacuum freeze', 'absolute'],
             ['brin_summarize', 'brin summarize', 'absolute']
-        ]},
+        ]
+    },
     'standby_delta': {
         'options': [None, 'Standby delta', 'kilobytes', 'replication delta', 'postgres.standby_delta', 'line'],
         'lines': [
@@ -396,13 +539,15 @@ CHARTS = {
             ['write_delta', 'write delta', 'absolute', 1, 1024],
             ['flush_delta', 'flush delta', 'absolute', 1, 1024],
             ['replay_delta', 'replay delta', 'absolute', 1, 1024]
-        ]},
-     'replication_slot': {
+        ]
+    },
+    'replication_slot': {
         'options': [None, 'Replication slot files', 'files', 'replication slot', 'postgres.replication_slot', 'line'],
         'lines': [
             ['replslot_wal_keep', 'wal keeped', 'absolute'],
             ['replslot_files', 'pg_replslot files', 'absolute']
-        ]}
+        ]
+    }
 }
 
 
@@ -462,7 +607,7 @@ class Service(SimpleService):
             cursor.close()
 
             if self.database_poll and isinstance(self.database_poll, str):
-                self.databases = [dbase for dbase in self.databases if dbase in self.database_poll.split()]\
+                self.databases = [dbase for dbase in self.databases if dbase in self.database_poll.split()] \
                                  or self.databases
 
             self.locks_zeroed = populate_lock_types(self.databases)
@@ -482,8 +627,8 @@ class Service(SimpleService):
             wal = 'xlog'
             lsn = 'location'
         self.queries[QUERIES['BGWRITER']] = METRICS['BGWRITER']
-        self.queries[QUERIES['DIFF_LSN'].format(wal,lsn)] = METRICS['WAL_WRITES']
-        self.queries[QUERIES['STANDBY_DELTA'].format(wal,lsn)] = METRICS['STANDBY_DELTA']
+        self.queries[QUERIES['DIFF_LSN'].format(wal, lsn)] = METRICS['WAL_WRITES']
+        self.queries[QUERIES['STANDBY_DELTA'].format(wal, lsn)] = METRICS['STANDBY_DELTA']
 
         if self.index_stats:
             self.queries[QUERIES['INDEX_STATS']] = METRICS['INDEX_STATS']
@@ -492,7 +637,7 @@ class Service(SimpleService):
         if is_superuser:
             self.queries[QUERIES['ARCHIVE'].format(wal)] = METRICS['ARCHIVE']
             if self.server_version >= 90400:
-                self.queries[QUERIES['WAL'].format(wal,lsn)] = METRICS['WAL']
+                self.queries[QUERIES['WAL'].format(wal, lsn)] = METRICS['WAL']
             if self.server_version >= 100000:
                 self.queries[QUERIES['REPSLOT_FILES']] = METRICS['REPSLOT_FILES']
         if self.server_version >= 90400:
@@ -501,8 +646,8 @@ class Service(SimpleService):
     def create_dynamic_charts_(self):
 
         for database_name in self.databases[::-1]:
-            self.definitions['database_size']['lines'].append([database_name + '_size',
-                                                               database_name, 'absolute', 1, 1024 * 1024])
+            self.definitions['database_size']['lines'].append(
+                [database_name + '_size', database_name, 'absolute', 1, 1024 * 1024])
             for chart_name in [name for name in self.order if name.startswith('db_stat')]:
                     add_database_stat_chart_(order=self.order, definitions=self.definitions,
                                              name=chart_name, database_name=database_name)
@@ -510,17 +655,21 @@ class Service(SimpleService):
             add_database_lock_chart_(order=self.order, definitions=self.definitions, database_name=database_name)
 
         for application_name in self.secondaries[::-1]:
-              add_replication_delta_chart_(order=self.order, definitions=self.definitions,
-                                       name='standby_delta', application_name=application_name)
+            add_replication_delta_chart_(
+                order=self.order,
+                definitions=self.definitions,
+                name='standby_delta',
+                application_name=application_name)
 
         for slot_name in self.replication_slots[::-1]:
-              add_replication_slot_chart_(order=self.order, definitions=self.definitions,
-                                       name='replication_slot', slot_name=slot_name)
-
-
+            add_replication_slot_chart_(
+                order=self.order,
+                definitions=self.definitions,
+                name='replication_slot',
+                slot_name=slot_name)
 
     def _get_data(self):
-        result, error = self._connect()
+        result, _ = self._connect()
         if result:
             cursor = self.connection.cursor(cursor_factory=DictCursor)
             try:
@@ -551,7 +700,8 @@ class Service(SimpleService):
                 else:
                     dimension_id = metric
                 if metric in row:
-                    self.data[dimension_id] = int(row[metric])
+                    if row[metric] is not None:
+                        self.data[dimension_id] = int(row[metric])
                 elif 'locks_count' in row:
                     self.data[dimension_id] = row['locks_count'] if metric == row['mode'] else 0
 
@@ -564,6 +714,7 @@ def discover_databases_(cursor, query):
             result.append(db)
     return result
 
+
 def discover_secondaries_(cursor, query):
     cursor.execute(query)
     result = list()
@@ -572,6 +723,7 @@ def discover_secondaries_(cursor, query):
             result.append(sc)
     return result
 
+
 def discover_replication_slots_(cursor, query):
     cursor.execute(query)
     result = list()
@@ -580,14 +732,17 @@ def discover_replication_slots_(cursor, query):
             result.append(slot)
     return result
 
+
 def check_if_superuser_(cursor, query):
     cursor.execute(query)
     return cursor.fetchone()[0]
 
+
 def detect_server_version(cursor, query):
     cursor.execute(query)
     return int(cursor.fetchone()[0])
 
+
 def populate_lock_types(databases):
     result = dict()
     for database in databases:
@@ -626,11 +781,12 @@ def add_database_stat_chart_(order, definitions, name, database_name):
     chart_template = CHARTS[name]
     chart_name = '_'.join([database_name, name])
     order.insert(0, chart_name)
-    name, title, units, family, context, chart_type = chart_template['options']
+    name, title, units, _, context, chart_type = chart_template['options']
     definitions[chart_name] = {
                'options': [name, title + ': ' + database_name,  units, 'db ' + database_name, context,  chart_type],
                'lines': create_lines(database_name, chart_template['lines'])}
 
+
 def add_replication_delta_chart_(order, definitions, name, application_name):
     def create_lines(standby, lines):
         result = list()
@@ -648,6 +804,7 @@ def add_replication_delta_chart_(order, definitions, name, application_name):
                'options': [name, title + ': ' + application_name,  units, 'replication delta', context,  chart_type],
                'lines': create_lines(application_name, chart_template['lines'])}
 
+
 def add_replication_slot_chart_(order, definitions, name, slot_name):
     def create_lines(slot, lines):
         result = list()
diff --git a/conf.d/python.d/postgres.conf b/collectors/python.d.plugin/postgres/postgres.conf
index b69ca3717..b69ca3717 100644
--- a/conf.d/python.d/postgres.conf
+++ b/collectors/python.d.plugin/postgres/postgres.conf
diff --git a/collectors/python.d.plugin/powerdns/Makefile.inc b/collectors/python.d.plugin/powerdns/Makefile.inc
new file mode 100644
index 000000000..256d32a40
--- /dev/null
+++ b/collectors/python.d.plugin/powerdns/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += powerdns/powerdns.chart.py
+dist_pythonconfig_DATA += powerdns/powerdns.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += powerdns/README.md powerdns/Makefile.inc
+
diff --git a/collectors/python.d.plugin/powerdns/README.md b/collectors/python.d.plugin/powerdns/README.md
new file mode 100644
index 000000000..3c4b145e0
--- /dev/null
+++ b/collectors/python.d.plugin/powerdns/README.md
@@ -0,0 +1,77 @@
+# powerdns
+
+Module monitor powerdns performance and health metrics.
+
+Powerdns charts:
+
+1. **Queries and Answers**
+ * udp-queries
+ * udp-answers
+ * tcp-queries
+ * tcp-answers
+
+2. **Cache Usage**
+ * query-cache-hit
+ * query-cache-miss
+ * packetcache-hit
+ * packetcache-miss
+
+3. **Cache Size**
+ * query-cache-size
+ * packetcache-size
+ * key-cache-size
+ * meta-cache-size
+
+4. **Latency**
+ * latency
+
+ Powerdns Recursor charts:
+
+ 1. **Questions In**
+ * questions
+ * ipv6-questions
+ * tcp-queries
+
+2. **Questions Out**
+ * all-outqueries
+ * ipv6-outqueries
+ * tcp-outqueries
+ * throttled-outqueries
+
+3. **Answer Times**
+ * answers-slow
+ * answers0-1
+ * answers1-10
+ * answers10-100
+ * answers100-1000
+
+4. **Timeouts**
+ * outgoing-timeouts
+ * outgoing4-timeouts
+ * outgoing6-timeouts
+
+5. **Drops**
+ * over-capacity-drops
+
+6. **Cache Usage**
+ * cache-hits
+ * cache-misses
+ * packetcache-hits
+ * packetcache-misses
+
+7. **Cache Size**
+ * cache-entries
+ * packetcache-entries
+ * negcache-entries
+
+### configuration
+
+```yaml
+local:
+  name     : 'local'
+  url     : 'http://127.0.0.1:8081/api/v1/servers/localhost/statistics'
+  header   :
+    X-API-Key: 'change_me'
+```
+
+---
diff --git a/collectors/python.d.plugin/powerdns/powerdns.chart.py b/collectors/python.d.plugin/powerdns/powerdns.chart.py
new file mode 100644
index 000000000..4264621b2
--- /dev/null
+++ b/collectors/python.d.plugin/powerdns/powerdns.chart.py
@@ -0,0 +1,150 @@
+# -*- coding: utf-8 -*-
+# Description: powerdns netdata python.d module
+# Author: Ilya Mashchenko (l2isbad)
+# Author: Luke Whitworth
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from json import loads
+
+from bases.FrameworkServices.UrlService import UrlService
+
+priority = 60000
+retries = 60
+# update_every = 3
+
+ORDER = ['questions', 'cache_usage', 'cache_size', 'latency']
+CHARTS = {
+    'questions': {
+        'options': [None, 'PowerDNS Queries and Answers', 'count', 'questions', 'powerdns.questions', 'line'],
+        'lines': [
+            ['udp-queries', None, 'incremental'],
+            ['udp-answers', None, 'incremental'],
+            ['tcp-queries', None, 'incremental'],
+            ['tcp-answers', None, 'incremental']
+        ]
+    },
+    'cache_usage': {
+        'options': [None, 'PowerDNS Cache Usage', 'count', 'cache', 'powerdns.cache_usage', 'line'],
+        'lines': [
+            ['query-cache-hit', None, 'incremental'],
+            ['query-cache-miss', None, 'incremental'],
+            ['packetcache-hit', 'packet-cache-hit', 'incremental'],
+            ['packetcache-miss', 'packet-cache-miss', 'incremental']
+        ]
+    },
+    'cache_size': {
+        'options': [None, 'PowerDNS Cache Size', 'count', 'cache', 'powerdns.cache_size', 'line'],
+        'lines': [
+            ['query-cache-size', None, 'absolute'],
+            ['packetcache-size', 'packet-cache-size', 'absolute'],
+            ['key-cache-size', None, 'absolute'],
+            ['meta-cache-size', None, 'absolute']
+        ]
+    },
+    'latency': {
+        'options': [None, 'PowerDNS Latency', 'microseconds', 'latency', 'powerdns.latency', 'line'],
+        'lines': [
+            ['latency', None, 'absolute']
+        ]
+    }
+}
+
+RECURSOR_ORDER = ['questions-in', 'questions-out', 'answer-times', 'timeouts', 'drops', 'cache_usage', 'cache_size']
+
+RECURSOR_CHARTS = {
+    'questions-in': {
+        'options': [None, 'PowerDNS Recursor Questions In', 'count', 'questions', 'powerdns_recursor.questions-in',
+                    'line'],
+        'lines': [
+            ['questions', None, 'incremental'],
+            ['ipv6-questions', None, 'incremental'],
+            ['tcp-questions', None, 'incremental']
+        ]
+    },
+    'questions-out': {
+        'options': [None, 'PowerDNS Recursor Questions Out', 'count', 'questions', 'powerdns_recursor.questions-out',
+                    'line'],
+        'lines': [
+            ['all-outqueries', None, 'incremental'],
+            ['ipv6-outqueries', None, 'incremental'],
+            ['tcp-outqueries', None, 'incremental'],
+            ['throttled-outqueries', None, 'incremental']
+        ]
+    },
+    'answer-times': {
+        'options': [None, 'PowerDNS Recursor Answer Times', 'count', 'performance', 'powerdns_recursor.answer-times',
+                    'line'],
+        'lines': [
+            ['answers-slow', None, 'incremental'],
+            ['answers0-1', None, 'incremental'],
+            ['answers1-10', None, 'incremental'],
+            ['answers10-100', None, 'incremental'],
+            ['answers100-1000', None, 'incremental']
+        ]
+    },
+    'timeouts': {
+        'options': [None, 'PowerDNS Recursor Questions Time', 'count', 'performance', 'powerdns_recursor.timeouts',
+                    'line'],
+        'lines': [
+            ['outgoing-timeouts', None, 'incremental'],
+            ['outgoing4-timeouts', None, 'incremental'],
+            ['outgoing6-timeouts', None, 'incremental']
+        ]
+    },
+    'drops': {
+        'options': [None, 'PowerDNS Recursor Drops', 'count', 'performance', 'powerdns_recursor.drops', 'line'],
+        'lines': [
+            ['over-capacity-drops', None, 'incremental']
+        ]
+    },
+    'cache_usage': {
+        'options': [None, 'PowerDNS Recursor Cache Usage', 'count', 'cache', 'powerdns_recursor.cache_usage', 'line'],
+        'lines': [
+            ['cache-hits', None, 'incremental'],
+            ['cache-misses', None, 'incremental'],
+            ['packetcache-hits', 'packet-cache-hit', 'incremental'],
+            ['packetcache-misses', 'packet-cache-miss', 'incremental']
+        ]
+    },
+    'cache_size': {
+        'options': [None, 'PowerDNS Recursor Cache Size', 'count', 'cache', 'powerdns_recursor.cache_size', 'line'],
+        'lines': [
+            ['cache-entries', None, 'absolute'],
+            ['packetcache-entries', None, 'absolute'],
+            ['negcache-entries', None, 'absolute']
+        ]
+    }
+}
+
+
+class Service(UrlService):
+    def __init__(self, configuration=None, name=None):
+        UrlService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+
+    def check(self):
+        self._manager = self._build_manager()
+        if not self._manager:
+            return None
+
+        d = self._get_data()
+        if not d:
+            return False
+
+        if is_recursor(d):
+            self.order = RECURSOR_ORDER
+            self.definitions = RECURSOR_CHARTS
+            self.module_name = 'powerdns_recursor'
+
+        return True
+
+    def _get_data(self):
+        data = self._get_raw_data()
+        if not data:
+            return None
+        return dict((d['name'], d['value']) for d in loads(data))
+
+
+def is_recursor(d):
+    return 'over-capacity-drops' in d and 'tcp-questions' in d
diff --git a/conf.d/python.d/powerdns.conf b/collectors/python.d.plugin/powerdns/powerdns.conf
index ca6200df1..ca6200df1 100644
--- a/conf.d/python.d/powerdns.conf
+++ b/collectors/python.d.plugin/powerdns/powerdns.conf
diff --git a/collectors/python.d.plugin/proxysql/Makefile.inc b/collectors/python.d.plugin/proxysql/Makefile.inc
new file mode 100644
index 000000000..66be372ce
--- /dev/null
+++ b/collectors/python.d.plugin/proxysql/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += proxysql/proxysql.chart.py
+dist_pythonconfig_DATA += proxysql/proxysql.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += proxysql/README.md proxysql/Makefile.inc
+
diff --git a/collectors/python.d.plugin/proxysql/README.md b/collectors/python.d.plugin/proxysql/README.md
new file mode 100644
index 000000000..02388276e
--- /dev/null
+++ b/collectors/python.d.plugin/proxysql/README.md
@@ -0,0 +1,62 @@
+# proxysql
+
+This module monitors proxysql backend and frontend performance metrics.
+
+It produces:
+
+1. **Connections (frontend)**
+  * connected: number of frontend connections currently connected
+  * aborted: number of frontend connections aborted due to invalid credential or max_connections reached
+  * non_idle: number of frontend connections that are not currently idle
+  * created: number of frontend connections created
+2. **Questions (frontend)**
+  * questions: total number of queries sent from frontends
+  * slow_queries: number of queries that ran for longer than the threshold in milliseconds defined in global variable `mysql-long_query_time`
+3. **Overall Bandwith (backends)**
+  * in
+  * out
+4. **Status (backends)**
+  * Backends
+    * `1=ONLINE`: backend server is fully operational
+    * `2=SHUNNED`: backend sever is temporarily taken out of use because of either too many connection errors in a time that was too short, or replication lag exceeded the allowed threshold
+    * `3=OFFLINE_SOFT`: when a server is put into OFFLINE_SOFT mode, new incoming connections aren't accepted anymore, while the existing connections are kept until they became inactive. In other words, connections are kept in use until the current transaction is completed. This allows to gracefully detach a backend
+    * `4=OFFLINE_HARD`: when a server is put into OFFLINE_HARD mode, the existing connections are dropped, while new incoming connections aren't accepted either. This is equivalent to deleting the server from a hostgroup, or temporarily taking it out of the hostgroup for maintenance work
+    * `-1`: Unknown status
+5. **Bandwith (backends)**
+  * Backends
+    * in
+    * out
+6. **Queries (backends)**
+  * Backends
+    * queries
+7. **Latency (backends)**
+  * Backends
+    * ping time
+8. **Pool connections (backends)**
+  * Backends
+    * Used: The number of connections are currently used by ProxySQL for sending queries to the backend server.
+    * Free: The number of connections are currently free.
+    * Established/OK: The number of connections were established successfully.
+    * Error: The number of connections weren't established successfully.
+9. **Commands**
+  * Commands
+    * Count
+    * Duration (Total duration for each command)
+10. **Commands Histogram**
+  * Commands
+    * 100us, 500us, ..., 10s, inf: the total number of commands of the given type which executed within the specified time limit and the previous one.
+
+### configuration
+
+```yaml
+tcpipv4:
+  name     : 'local'
+  user     : 'stats'
+  pass     : 'stats'
+  host     : '127.0.0.1'
+  port     : '6032'
+```
+
+If no configuration is given, module will fail to run.
+
+---
diff --git a/collectors/python.d.plugin/proxysql/proxysql.chart.py b/collectors/python.d.plugin/proxysql/proxysql.chart.py
new file mode 100644
index 000000000..f7e3d49f9
--- /dev/null
+++ b/collectors/python.d.plugin/proxysql/proxysql.chart.py
@@ -0,0 +1,356 @@
+# -*- coding: utf-8 -*-
+# Description: Proxysql netdata python.d module
+# Author: Ali Borhani (alibo)
+# SPDX-License-Identifier: GPL-3.0+
+
+from bases.FrameworkServices.MySQLService import MySQLService
+
+# default module values (can be overridden per job in `config`)
+# update_every = 3
+priority = 60000
+retries = 60
+
+
+def query(table, *params):
+    return 'SELECT {params} FROM {table}'.format(table=table, params=', '.join(params))
+
+
+# https://github.com/sysown/proxysql/blob/master/doc/admin_tables.md#stats_mysql_global
+QUERY_GLOBAL = query(
+    "stats_mysql_global",
+    "Variable_Name",
+    "Variable_Value"
+)
+
+# https://github.com/sysown/proxysql/blob/master/doc/admin_tables.md#stats_mysql_connection_pool
+QUERY_CONNECTION_POOL = query(
+    "stats_mysql_connection_pool",
+    "hostgroup",
+    "srv_host",
+    "srv_port",
+    "status",
+    "ConnUsed",
+    "ConnFree",
+    "ConnOK",
+    "ConnERR",
+    "Queries",
+    "Bytes_data_sent",
+    "Bytes_data_recv",
+    "Latency_us"
+)
+
+# https://github.com/sysown/proxysql/blob/master/doc/admin_tables.md#stats_mysql_commands_counters
+QUERY_COMMANDS = query(
+    "stats_mysql_commands_counters",
+    "Command",
+    "Total_Time_us",
+    "Total_cnt",
+    "cnt_100us",
+    "cnt_500us",
+    "cnt_1ms",
+    "cnt_5ms",
+    "cnt_10ms",
+    "cnt_50ms",
+    "cnt_100ms",
+    "cnt_500ms",
+    "cnt_1s",
+    "cnt_5s",
+    "cnt_10s",
+    "cnt_INFs"
+)
+
+GLOBAL_STATS = [
+    'client_connections_aborted',
+    'client_connections_connected',
+    'client_connections_created',
+    'client_connections_non_idle',
+    'proxysql_uptime',
+    'questions',
+    'slow_queries'
+]
+
+CONNECTION_POOL_STATS = [
+    'status',
+    'connused',
+    'connfree',
+    'connok',
+    'connerr',
+    'queries',
+    'bytes_data_sent',
+    'bytes_data_recv',
+    'latency_us'
+]
+
+ORDER = [
+    'connections',
+    'active_transactions',
+    'questions',
+    'pool_overall_net',
+    'commands_count',
+    'commands_duration',
+    'pool_status',
+    'pool_net',
+    'pool_queries',
+    'pool_latency',
+    'pool_connection_used',
+    'pool_connection_free',
+    'pool_connection_ok',
+    'pool_connection_error'
+]
+
+HISTOGRAM_ORDER = [
+    '100us',
+    '500us',
+    '1ms',
+    '5ms',
+    '10ms',
+    '50ms',
+    '100ms',
+    '500ms',
+    '1s',
+    '5s',
+    '10s',
+    'inf'
+]
+
+STATUS = {
+    "ONLINE": 1,
+    "SHUNNED": 2,
+    "OFFLINE_SOFT": 3,
+    "OFFLINE_HARD": 4
+}
+
+CHARTS = {
+    'pool_status': {
+        'options': [None, 'ProxySQL Backend Status', 'status', 'status', 'proxysql.pool_status', 'line'],
+        'lines': []
+    },
+    'pool_net': {
+        'options': [None, 'ProxySQL Backend Bandwidth', 'kilobits/s', 'bandwidth', 'proxysql.pool_net', 'area'],
+        'lines': []
+    },
+    'pool_overall_net': {
+        'options': [None, 'ProxySQL Backend Overall Bandwidth', 'kilobits/s', 'overall_bandwidth',
+                    'proxysql.pool_overall_net', 'area'],
+        'lines': [
+            ['bytes_data_recv', 'in', 'incremental', 8, 1024],
+            ['bytes_data_sent', 'out', 'incremental', -8, 1024]
+        ]
+    },
+    'questions': {
+        'options': [None, 'ProxySQL Frontend Questions', 'questions/s', 'questions', 'proxysql.questions', 'line'],
+        'lines': [
+            ['questions', 'questions', 'incremental'],
+            ['slow_queries', 'slow_queries', 'incremental']
+        ]
+    },
+    'pool_queries': {
+        'options': [None, 'ProxySQL Backend Queries', 'queries/s', 'queries', 'proxysql.queries', 'line'],
+        'lines': []
+    },
+    'active_transactions': {
+        'options': [None, 'ProxySQL Frontend Active Transactions', 'transactions/s', 'active_transactions',
+                    'proxysql.active_transactions', 'line'],
+        'lines': [
+            ['active_transactions', 'active_transactions', 'absolute']
+        ]
+    },
+    'pool_latency': {
+        'options': [None, 'ProxySQL Backend Latency', 'ms', 'latency', 'proxysql.latency', 'line'],
+        'lines': []
+    },
+    'connections': {
+        'options': [None, 'ProxySQL Frontend Connections', 'connections/s', 'connections', 'proxysql.connections',
+                    'line'],
+        'lines': [
+            ['client_connections_connected', 'connected', 'absolute'],
+            ['client_connections_created', 'created', 'incremental'],
+            ['client_connections_aborted', 'aborted', 'incremental'],
+            ['client_connections_non_idle', 'non_idle', 'absolute']
+        ]
+    },
+    'pool_connection_used': {
+        'options': [None, 'ProxySQL Used Connections', 'connections', 'pool_connections',
+                    'proxysql.pool_used_connections', 'line'],
+        'lines': []
+    },
+    'pool_connection_free': {
+        'options': [None, 'ProxySQL Free Connections', 'connections', 'pool_connections',
+                    'proxysql.pool_free_connections', 'line'],
+        'lines': []
+    },
+    'pool_connection_ok': {
+        'options': [None, 'ProxySQL Established Connections', 'connections', 'pool_connections',
+                    'proxysql.pool_ok_connections', 'line'],
+        'lines': []
+    },
+    'pool_connection_error': {
+        'options': [None, 'ProxySQL Error Connections', 'connections', 'pool_connections',
+                    'proxysql.pool_error_connections', 'line'],
+        'lines': []
+    },
+    'commands_count': {
+        'options': [None, 'ProxySQL Commands', 'commands', 'commands', 'proxysql.commands_count', 'line'],
+        'lines': []
+    },
+    'commands_duration': {
+        'options': [None, 'ProxySQL Commands Duration', 'ms', 'commands', 'proxysql.commands_duration', 'line'],
+        'lines': []
+    }
+}
+
+
+class Service(MySQLService):
+    def __init__(self, configuration=None, name=None):
+        MySQLService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+        self.queries = dict(
+            global_status=QUERY_GLOBAL,
+            connection_pool_status=QUERY_CONNECTION_POOL,
+            commands_status=QUERY_COMMANDS
+        )
+
+    def _get_data(self):
+        raw_data = self._get_raw_data(description=True)
+
+        if not raw_data:
+            return None
+
+        to_netdata = dict()
+
+        if 'global_status' in raw_data:
+            global_status = dict(raw_data['global_status'][0])
+            for key in global_status:
+                if key.lower() in GLOBAL_STATS:
+                    to_netdata[key.lower()] = global_status[key]
+
+        if 'connection_pool_status' in raw_data:
+
+            to_netdata['bytes_data_recv'] = 0
+            to_netdata['bytes_data_sent'] = 0
+
+            for record in raw_data['connection_pool_status'][0]:
+                backend = self.generate_backend(record)
+                name = self.generate_backend_name(backend)
+
+                for key in backend:
+                    if key in CONNECTION_POOL_STATS:
+                        if key == 'status':
+                            backend[key] = self.convert_status(backend[key])
+
+                            if len(self.charts) > 0:
+                                if (name + '_status') not in self.charts['pool_status']:
+                                    self.add_backend_dimensions(name)
+
+                        to_netdata["{0}_{1}".format(name, key)] = backend[key]
+
+                    if key == 'bytes_data_recv':
+                        to_netdata['bytes_data_recv'] += int(backend[key])
+
+                    if key == 'bytes_data_sent':
+                        to_netdata['bytes_data_sent'] += int(backend[key])
+
+        if 'commands_status' in raw_data:
+            for record in raw_data['commands_status'][0]:
+                cmd = self.generate_command_stats(record)
+                name = cmd['name']
+
+                if len(self.charts) > 0:
+                    if (name + '_count') not in self.charts['commands_count']:
+                        self.add_command_dimensions(name)
+                        self.add_histogram_chart(cmd)
+
+                    to_netdata[name + '_count'] = cmd['count']
+                    to_netdata[name + '_duration'] = cmd['duration']
+                    for histogram in cmd['histogram']:
+                        dimId = 'commands_histogram_{0}_{1}'.format(name, histogram)
+                        to_netdata[dimId] = cmd['histogram'][histogram]
+
+        return to_netdata or None
+
+    def add_backend_dimensions(self, name):
+        self.charts['pool_status'].add_dimension([name + '_status', name, 'absolute'])
+        self.charts['pool_net'].add_dimension([name + '_bytes_data_recv', 'from_' + name, 'incremental', 8, 1024])
+        self.charts['pool_net'].add_dimension([name + '_bytes_data_sent', 'to_' + name, 'incremental', -8, 1024])
+        self.charts['pool_queries'].add_dimension([name + '_queries', name, 'incremental'])
+        self.charts['pool_latency'].add_dimension([name + '_latency_us', name, 'absolute', 1, 1000])
+        self.charts['pool_connection_used'].add_dimension([name + '_connused', name, 'absolute'])
+        self.charts['pool_connection_free'].add_dimension([name + '_connfree', name, 'absolute'])
+        self.charts['pool_connection_ok'].add_dimension([name + '_connok', name, 'incremental'])
+        self.charts['pool_connection_error'].add_dimension([name + '_connerr', name, 'incremental'])
+
+    def add_command_dimensions(self, cmd):
+        self.charts['commands_count'].add_dimension([cmd + '_count', cmd, 'incremental'])
+        self.charts['commands_duration'].add_dimension([cmd + '_duration', cmd, 'incremental', 1, 1000])
+
+    def add_histogram_chart(self, cmd):
+        chart = self.charts.add_chart(self.histogram_chart(cmd))
+
+        for histogram in HISTOGRAM_ORDER:
+            dimId = 'commands_histogram_{0}_{1}'.format(cmd['name'], histogram)
+            chart.add_dimension([dimId, histogram, 'incremental'])
+
+    @staticmethod
+    def histogram_chart(cmd):
+        return [
+            'commands_historgram_' + cmd['name'],
+            None,
+            'ProxySQL {0} Command Histogram'.format(cmd['name'].title()),
+            'commands',
+            'commands_histogram',
+            'proxysql.commands_histogram_' + cmd['name'],
+            'stacked'
+        ]
+
+    @staticmethod
+    def generate_backend(data):
+        return {
+            'hostgroup': data[0],
+            'srv_host': data[1],
+            'srv_port': data[2],
+            'status': data[3],
+            'connused': data[4],
+            'connfree': data[5],
+            'connok': data[6],
+            'connerr': data[7],
+            'queries': data[8],
+            'bytes_data_sent': data[9],
+            'bytes_data_recv': data[10],
+            'latency_us': data[11]
+        }
+
+    @staticmethod
+    def generate_command_stats(data):
+        return {
+            'name': data[0].lower(),
+            'duration': data[1],
+            'count': data[2],
+            'histogram': {
+                '100us': data[3],
+                '500us': data[4],
+                '1ms': data[5],
+                '5ms': data[6],
+                '10ms': data[7],
+                '50ms': data[8],
+                '100ms': data[9],
+                '500ms': data[10],
+                '1s': data[11],
+                '5s': data[12],
+                '10s': data[13],
+                'inf': data[14]
+            }
+        }
+
+    @staticmethod
+    def generate_backend_name(backend):
+        hostgroup = backend['hostgroup'].replace(' ', '_').lower()
+        host = backend['srv_host'].replace('.', '_')
+
+        return "{0}_{1}_{2}".format(hostgroup, host, backend['srv_port'])
+
+    @staticmethod
+    def convert_status(status):
+        if status in STATUS:
+            return STATUS[status]
+        return -1
diff --git a/collectors/python.d.plugin/proxysql/proxysql.conf b/collectors/python.d.plugin/proxysql/proxysql.conf
new file mode 100644
index 000000000..d29c2e5be
--- /dev/null
+++ b/collectors/python.d.plugin/proxysql/proxysql.conf
@@ -0,0 +1,118 @@
+# netdata python.d.plugin configuration for ProxySQL
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# Additionally to the above, proxysql also supports the following:
+#
+#     host: 'IP or HOSTNAME' # the host to connect to
+#     port: PORT             # the port to connect to
+#
+#  in all cases, the following can also be set:
+#
+#     user: 'username'       # the proxysql username to use
+#     pass: 'password'       # the proxysql password to use
+#
+
+# AUTO-DETECTION JOBS
+# only one of them will run (they have the same name)
+
+tcp:
+  name     : 'local'
+  user     : 'stats'
+  pass     : 'stats'
+  host     : 'localhost'
+  port     : '6032'
+
+tcpipv4:
+  name     : 'local'
+  user     : 'stats'
+  pass     : 'stats'
+  host     : '127.0.0.1'
+  port     : '6032'
+
+tcpipv6:
+  name     : 'local'
+  user     : 'stats'
+  pass     : 'stats'
+  host     : '::1'
+  port     : '6032'
+
+tcp_admin:
+  name     : 'local'
+  user     : 'admin'
+  pass     : 'admin'
+  host     : 'localhost'
+  port     : '6032'
+
+tcpipv4_admin:
+  name     : 'local'
+  user     : 'admin'
+  pass     : 'admin'
+  host     : '127.0.0.1'
+  port     : '6032'
+
+tcpipv6_admin:
+  name     : 'local'
+  user     : 'admin'
+  pass     : 'admin'
+  host     : '::1'
+  port     : '6032'
diff --git a/collectors/python.d.plugin/puppet/Makefile.inc b/collectors/python.d.plugin/puppet/Makefile.inc
new file mode 100644
index 000000000..fe94b9254
--- /dev/null
+++ b/collectors/python.d.plugin/puppet/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += puppet/puppet.chart.py
+dist_pythonconfig_DATA += puppet/puppet.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += puppet/README.md puppet/Makefile.inc
+
diff --git a/collectors/python.d.plugin/puppet/README.md b/collectors/python.d.plugin/puppet/README.md
new file mode 100644
index 000000000..8304c831e
--- /dev/null
+++ b/collectors/python.d.plugin/puppet/README.md
@@ -0,0 +1,48 @@
+# puppet
+
+Monitor status of Puppet Server and Puppet DB.
+
+Following charts are drawn:
+
+1. **JVM Heap**
+ * committed (allocated from OS)
+ * used (actual use)
+2. **JVM Non-Heap**
+ * committed (allocated from OS)
+ * used (actual use)
+3. **CPU Usage**
+ * execution
+ * GC (taken by garbage collection)
+4. **File Descriptors**
+ * max
+ * used
+
+
+### configuration
+
+```yaml
+puppetdb:
+    url: 'https://fqdn.example.com:8081'
+    tls_cert_file: /path/to/client.crt
+    tls_key_file: /path/to/client.key
+    autodetection_retry: 1
+    retries: 3600
+
+puppetserver:
+    url: 'https://fqdn.example.com:8140'
+    autodetection_retry: 1
+    retries: 3600
+```
+
+When no configuration is given then `https://fqdn.example.com:8140` is
+tried without any retries.
+
+### notes
+
+* Exact Fully Qualified Domain Name of the node should be used.
+* Usually Puppet Server/DB startup time is VERY long. So, there should
+  be quite reasonable retry count.
+* Secure PuppetDB config may require client certificate. Not applies
+  to default PuppetDB configuration though.
+
+---
diff --git a/collectors/python.d.plugin/puppet/puppet.chart.py b/collectors/python.d.plugin/puppet/puppet.chart.py
new file mode 100644
index 000000000..5c8e48bd9
--- /dev/null
+++ b/collectors/python.d.plugin/puppet/puppet.chart.py
@@ -0,0 +1,121 @@
+# -*- coding: utf-8 -*-
+# Description: puppet netdata python.d module
+# Author: Andrey Galkin <andrey@futoin.org> (andvgal)
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This module should work both with OpenSource and PE versions
+# of PuppetServer and PuppetDB.
+#
+# NOTE: PuppetDB may be configured to require proper TLS
+#       client certificate for security reasons. Use tls_key_file
+#       and tls_cert_file options then.
+#
+
+from bases.FrameworkServices.UrlService import UrlService
+from json import loads
+import socket
+
+update_every = 5
+priority = 60000
+# very long clojure-based service startup time
+retries = 180
+
+MB = 1048576
+CPU_SCALE = 1000
+ORDER = [
+    'jvm_heap',
+    'jvm_nonheap',
+    'cpu',
+    'fd_open',
+]
+CHARTS = {
+    'jvm_heap': {
+        'options': [None, 'JVM Heap', 'MB', 'resources', 'puppet.jvm', 'area'],
+        'lines': [
+            ['jvm_heap_committed', 'committed', 'absolute', 1, MB],
+            ['jvm_heap_used', 'used', 'absolute', 1, MB],
+        ],
+        'variables': [
+            ['jvm_heap_max'],
+            ['jvm_heap_init'],
+        ],
+    },
+    'jvm_nonheap': {
+        'options': [None, 'JVM Non-Heap', 'MB', 'resources', 'puppet.jvm', 'area'],
+        'lines': [
+            ['jvm_nonheap_committed', 'committed', 'absolute', 1, MB],
+            ['jvm_nonheap_used', 'used', 'absolute', 1, MB],
+        ],
+        'variables': [
+            ['jvm_nonheap_max'],
+            ['jvm_nonheap_init'],
+        ],
+    },
+    'cpu': {
+        'options': [None, 'CPU usage', 'percentage', 'resources', 'puppet.cpu', 'stacked'],
+        'lines': [
+            ['cpu_time', 'execution', 'absolute', 1, CPU_SCALE],
+            ['gc_time', 'GC', 'absolute', 1, CPU_SCALE],
+        ]
+    },
+    'fd_open': {
+        'options': [None, 'File Descriptors', 'descriptors', 'resources', 'puppet.fdopen', 'line'],
+        'lines': [
+            ['fd_used', 'used', 'absolute'],
+        ],
+        'variables': [
+            ['fd_max'],
+        ],
+    },
+}
+
+
+class Service(UrlService):
+    def __init__(self, configuration=None, name=None):
+        UrlService.__init__(self, configuration=configuration, name=name)
+        self.url = 'https://{0}:8140'.format(socket.getfqdn())
+        self.order = ORDER
+        self.definitions = CHARTS
+
+    def _get_data(self):
+        # NOTE: there are several ways to retrieve data
+        # 1. Only PE versions:
+        #    https://puppet.com/docs/pe/2018.1/api_status/status_api_metrics_endpoints.html
+        # 2. Inidividual Metrics API (JMX):
+        #    https://puppet.com/docs/pe/2018.1/api_status/metrics_api.html
+        # 3. Extended status at debug level:
+        #    https://puppet.com/docs/pe/2018.1/api_status/status_api_json_endpoints.html
+        #
+        # For sake of simplicity and efficiency the status one is used..
+
+        raw_data = self._get_raw_data(self.url + '/status/v1/services?level=debug')
+
+        if raw_data is None:
+            return None
+
+        raw_data = loads(raw_data)
+        data = {}
+
+        try:
+            try:
+                jvm_metrics = raw_data['status-service']['status']['experimental']['jvm-metrics']
+            except KeyError:
+                jvm_metrics = raw_data['status-service']['status']['jvm-metrics']
+
+            heap_mem = jvm_metrics['heap-memory']
+            non_heap_mem = jvm_metrics['non-heap-memory']
+
+            for k in ['max', 'committed', 'used', 'init']:
+                data['jvm_heap_'+k] = heap_mem[k]
+                data['jvm_nonheap_'+k] = non_heap_mem[k]
+
+            fd_open = jvm_metrics['file-descriptors']
+            data['fd_max'] = fd_open['max']
+            data['fd_used'] = fd_open['used']
+
+            data['cpu_time'] = int(jvm_metrics['cpu-usage'] * CPU_SCALE)
+            data['gc_time'] = int(jvm_metrics['gc-cpu-usage'] * CPU_SCALE)
+        except KeyError:
+            pass
+
+        return data or None
diff --git a/collectors/python.d.plugin/puppet/puppet.conf b/collectors/python.d.plugin/puppet/puppet.conf
new file mode 100644
index 000000000..991bfabed
--- /dev/null
+++ b/collectors/python.d.plugin/puppet/puppet.conf
@@ -0,0 +1,98 @@
+# netdata python.d.plugin configuration for Puppet Server and Puppet DB
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# These configuration comes from UrlService base:
+#     url:                    # HTTP or HTTPS URL
+#     tls_verify: False       # Control HTTPS server certificate verification
+#     tls_ca_file:            # Optional CA (bundle) file to use
+#     tls_cert_file:          # Optional client certificate file
+#     tls_key_file:           # Optional client key file
+#
+# ----------------------------------------------------------------------
+# AUTO-DETECTION JOBS
+# only one of them will run (they have the same name)
+# puppet:
+#     url: 'https://<FQDN>:8140'
+#
+
+#
+# Production configuration should look like below.
+#
+# NOTE: usually Puppet Server/DB startup time is VERY long. So, there should
+#       be quite reasonable retry count.
+#
+# NOTE: secure PuppetDB config may require client certificate.
+#       Not applies to default PuppetDB configuration though.
+#
+# puppetdb:
+#     url: 'https://fqdn.example.com:8081'
+#     tls_cert_file: /path/to/client.crt
+#     tls_key_file: /path/to/client.key
+#     autodetection_retry: 1
+#     retries: 3600
+#
+# puppetserver:
+#     url: 'https://fqdn.example.com:8140'
+#     autodetection_retry: 1
+#     retries: 3600
+#
diff --git a/conf.d/python.d.conf b/collectors/python.d.plugin/python.d.conf
index bb57738bb..97f4cb8d5 100644
--- a/conf.d/python.d.conf
+++ b/collectors/python.d.plugin/python.d.conf
@@ -19,11 +19,19 @@ enabled: yes
 # If "default_run" = "no" the default for all modules is disabled (no).
 # Setting any of these to "yes" will enable it.
 
+# Enable / Disable explicit garbage collection (full collection run). Default is enabled.
+gc_run: yes
+
+# Garbage collection interval in seconds. Default is 300.
+gc_interval: 300
+
+# apache: yes
+
 # apache_cache has been replaced by web_log
 apache_cache: no
-# apache: yes
 # beanstalk: yes
 # bind_rndc: yes
+# boinc: yes
 # ceph: yes
 chrony: no
 # couchdb: yes
@@ -40,40 +48,50 @@ example: no
 # exim: yes
 # fail2ban: yes
 # freeradius: yes
+go_expvar: no
 
 # gunicorn_log has been replaced by web_log
 gunicorn_log: no
-go_expvar: no
 # haproxy: yes
 # hddtemp: yes
 # icecast: yes
 # ipfs: yes
 # isc_dhcpd: yes
+# linux_power_supply: yes
+# litespeed: yes
+logind: no
 # mdstat: yes
 # memcached: yes
 # mongodb: yes
+# monit: yes
 # mysql: yes
 # nginx: yes
 # nginx_plus: yes
-# nsd: yes
-# ntpd: yes
 
 # nginx_log has been replaced by web_log
 nginx_log: no
+# nsd: yes
 # ntpd: yes
 # ovpn_status_log: yes
 # phpfpm: yes
 # postfix: yes
 # postgres: yes
 # powerdns: yes
+# proxysql: yes
+# puppet: yes
 # rabbitmq: yes
 # redis: yes
+# rethinkdbs: yes
 # retroshare: yes
-# sensors: yes
 # samba: yes
+# sensors: yes
 # smartd_log: yes
-# squid: yes
+# spigotmc: yes
 # springboot: yes
+# squid: yes
 # tomcat: yes
+unbound: no
+# uwsgi: yes
 # varnish: yes
+# w1sensor: yes
 # web_log: yes
diff --git a/plugins.d/python.d.plugin b/collectors/python.d.plugin/python.d.plugin
index c9b260164..264c3383d 100755..100644
--- a/plugins.d/python.d.plugin
+++ b/collectors/python.d.plugin/python.d.plugin
@@ -6,7 +6,9 @@ echo "ERROR python IS NOT AVAILABLE IN THIS SYSTEM")" "$0" "$@" # '''
 # Description:
 # Author: Pawel Krupa (paulfantom)
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
+import gc
 import os
 import sys
 import threading
@@ -15,22 +17,30 @@ from re import sub
 from sys import version_info, argv
 from time import sleep
 
-try:
-    from time import monotonic as time
-except ImportError:
-    from time import time
+GC_RUN = True
+GC_COLLECT_EVERY = 300
 
 PY_VERSION = version_info[:2]
-PLUGIN_CONFIG_DIR = os.getenv('NETDATA_CONFIG_DIR', os.path.dirname(__file__) + '/../../../../etc/netdata') + '/'
-CHARTS_PY_DIR = os.path.abspath(os.getenv('NETDATA_PLUGINS_DIR', os.path.dirname(__file__)) + '/../python.d') + '/'
-CHARTS_PY_CONFIG_DIR = PLUGIN_CONFIG_DIR + 'python.d/'
-PYTHON_MODULES_DIR = CHARTS_PY_DIR + 'python_modules'
+
+USER_CONFIG_DIR = os.getenv('NETDATA_USER_CONFIG_DIR', '/usr/local/etc/netdata')
+STOCK_CONFIG_DIR = os.getenv('NETDATA_STOCK_CONFIG_DIR', '/usr/local/lib/netdata/conf.d')
+
+PLUGINS_USER_CONFIG_DIR = os.path.join(USER_CONFIG_DIR, 'python.d')
+PLUGINS_STOCK_CONFIG_DIR = os.path.join(STOCK_CONFIG_DIR, 'python.d')
+
+
+PLUGINS_DIR = os.path.abspath(os.getenv(
+    'NETDATA_PLUGINS_DIR',
+    os.path.dirname(__file__)) + '/../python.d')
+
+
+PYTHON_MODULES_DIR = os.path.join(PLUGINS_DIR, 'python_modules')
 
 sys.path.append(PYTHON_MODULES_DIR)
 
-from bases.loaders import ModuleAndConfigLoader
-from bases.loggers import PythonDLogger
-from bases.collection import setdefault_values, run_and_exit
+from bases.loaders import ModuleAndConfigLoader  # noqa: E402
+from bases.loggers import PythonDLogger  # noqa: E402
+from bases.collection import setdefault_values, run_and_exit  # noqa: E402
 
 try:
     from collections import OrderedDict
@@ -53,7 +63,7 @@ def module_ok(m):
     return m.endswith(MODULE_EXTENSION) and m[:-len(MODULE_EXTENSION)] not in OBSOLETE_MODULES
 
 
-ALL_MODULES = [m for m in sorted(os.listdir(CHARTS_PY_DIR)) if module_ok(m)]
+ALL_MODULES = [m for m in sorted(os.listdir(PLUGINS_DIR)) if module_ok(m)]
 
 
 def parse_cmd():
@@ -68,6 +78,13 @@ def multi_job_check(config):
     return next((True for key in config if isinstance(config[key], dict)), False)
 
 
+class RawModule:
+    def __init__(self, name, path, explicitly_enabled=True):
+        self.name = name
+        self.path = path
+        self.explicitly_enabled = explicitly_enabled
+
+
 class Job(object):
     def __init__(self, initialized_job, job_id):
         """
@@ -80,7 +97,7 @@ class Job(object):
         self.recheck_every = self.job.configuration.pop('autodetection_retry')
         self.checked = False  # used in Plugin.check_job()
         self.created = False  # used in Plugin.create_job_charts()
-        if OVERRIDE_UPDATE_EVERY:
+        if self.job.update_every < int(OVERRIDE_UPDATE_EVERY):
             self.job.update_every = int(OVERRIDE_UPDATE_EVERY)
 
     def __getattr__(self, item):
@@ -194,9 +211,22 @@ class Plugin(object):
         self.modules = OrderedDict()
         self.sleep_time = 1
         self.runs_counter = 0
-        self.config, error = self.loader.load_config_from_file(PLUGIN_CONFIG_DIR + 'python.d.conf')
+
+        user_config = os.path.join(USER_CONFIG_DIR, 'python.d.conf')
+        stock_config = os.path.join(STOCK_CONFIG_DIR, 'python.d.conf')
+
+        Logger.debug("loading '{0}'".format(user_config))
+        self.config, error = self.loader.load_config_from_file(user_config)
+
+        if error:
+            Logger.error("cannot load '{0}': {1}. Will try stock version.".format(user_config, error))
+            Logger.debug("loading '{0}'".format(stock_config))
+            self.config, error = self.loader.load_config_from_file(stock_config)
         if error:
-            Logger.error('"python.d.conf" configuration file not found. Using defaults.')
+            Logger.error("cannot load '{0}': {1}".format(stock_config, error))
+
+        self.do_gc = self.config.get("gc_run", GC_RUN)
+        self.gc_interval = self.config.get("gc_interval", GC_COLLECT_EVERY)
 
         if not self.config.get('enabled', True):
             run_and_exit(Logger.info)('DISABLED in configuration file.')
@@ -223,47 +253,57 @@ class Plugin(object):
     def enabled_modules(self):
         for mod in MODULES_TO_RUN:
             mod_name = mod[:-len(MODULE_EXTENSION)]
-            mod_path = CHARTS_PY_DIR + mod
-            conf_path = ''.join([CHARTS_PY_CONFIG_DIR, mod_name, '.conf'])
-
-            if DEBUG:
-                yield mod, mod_name, mod_path, conf_path
-            else:
-                if all([self.config.get('default_run', True),
-                        self.config.get(mod_name, True)]):
-                    yield mod, mod_name, mod_path, conf_path
-
-                elif all([not self.config.get('default_run'),
-                          self.config.get(mod_name)]):
-                    yield mod, mod_name, mod_path, conf_path
+            mod_path = os.path.join(PLUGINS_DIR, mod)
+            if any(
+                [
+                    self.config.get('default_run', True) and self.config.get(mod_name, True),
+                    (not self.config.get('default_run')) and self.config.get(mod_name),
+                ]
+            ):
+                yield RawModule(
+                    name=mod_name,
+                    path=mod_path,
+                    explicitly_enabled=self.config.get(mod_name),
+                )
 
     def load_and_initialize_modules(self):
-        for mod, mod_name, mod_path, conf_path in self.enabled_modules():
+        for mod in self.enabled_modules():
 
             # Load module from file ------------------------------------------------------------
-            loaded_module, error = self.loader.load_module_from_file(mod_name, mod_path)
+            loaded_module, error = self.loader.load_module_from_file(mod.name, mod.path)
             log = Logger.error if error else Logger.debug
             log("module load source: '{module_name}' => [{status}]".format(status='FAILED' if error else 'OK',
-                                                                           module_name=mod_name))
+                                                                           module_name=mod.name))
             if error:
                 Logger.error("load source error : {0}".format(error))
                 continue
 
             # Load module config from file ------------------------------------------------------
-            loaded_config, error = self.loader.load_config_from_file(conf_path)
-            log = Logger.error if error else Logger.debug
-            log("module load config: '{module_name}' => [{status}]".format(status='FAILED' if error else 'OK',
-                                                                           module_name=mod_name))
+            user_config = os.path.join(PLUGINS_USER_CONFIG_DIR, mod.name + '.conf')
+            stock_config = os.path.join(PLUGINS_STOCK_CONFIG_DIR, mod.name + '.conf')
+
+            Logger.debug("loading '{0}'".format(user_config))
+            loaded_config, error = self.loader.load_config_from_file(user_config)
             if error:
-                Logger.error('load config error : {0}'.format(error))
+                Logger.error("cannot load '{0}' : {1}. Will try stock version.".format(user_config, error))
+                Logger.debug("loading '{0}'".format(stock_config))
+                loaded_config, error = self.loader.load_config_from_file(stock_config)
+
+            if error:
+                Logger.error("cannot load '{0}': {1}".format(stock_config, error))
+
+            # Skip disabled modules
+            if getattr(loaded_module, 'disabled_by_default', False) and not mod.explicitly_enabled:
+                Logger.info("module '{0}' disabled by default".format(loaded_module.__name__))
+                continue
+
+            # Module initialization ---------------------------------------------------
 
-            # Service instance initialization ---------------------------------------------------
             initialized_module = Module(service=loaded_module, config=loaded_config)
             Logger.debug("module status: '{module_name}' => [{status}] "
                          "(jobs: {jobs_number})".format(status='OK' if initialized_module else 'FAILED',
                                                         module_name=initialized_module.name,
                                                         jobs_number=len(initialized_module)))
-
             if initialized_module:
                 self.modules[initialized_module.name] = initialized_module
 
@@ -349,6 +389,11 @@ class Plugin(object):
             self.cleanup()
             self.autodetect_retry()
 
+            # FIXME: https://github.com/netdata/netdata/issues/3817
+            if self.do_gc and self.runs_counter % self.gc_interval == 0:
+                v = gc.collect()
+                Logger.debug("GC full collection run result: {0}".format(v))
+
     def cleanup(self):
         for job in self.dead_jobs:
             self.delete_job(job)
diff --git a/collectors/python.d.plugin/python.d.plugin.in b/collectors/python.d.plugin/python.d.plugin.in
new file mode 100755
index 000000000..7ac03fd99
--- /dev/null
+++ b/collectors/python.d.plugin/python.d.plugin.in
@@ -0,0 +1,427 @@
+#!/usr/bin/env bash
+'''':; exec "$(command -v python || command -v python3 || command -v python2 ||
+echo "ERROR python IS NOT AVAILABLE IN THIS SYSTEM")" "$0" "$@" # '''
+
+# -*- coding: utf-8 -*-
+# Description:
+# Author: Pawel Krupa (paulfantom)
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import gc
+import os
+import sys
+import threading
+
+from re import sub
+from sys import version_info, argv
+from time import sleep
+
+GC_RUN = True
+GC_COLLECT_EVERY = 300
+
+PY_VERSION = version_info[:2]
+
+USER_CONFIG_DIR = os.getenv('NETDATA_USER_CONFIG_DIR', '@configdir_POST@')
+STOCK_CONFIG_DIR = os.getenv('NETDATA_STOCK_CONFIG_DIR', '@libconfigdir_POST@')
+
+PLUGINS_USER_CONFIG_DIR = os.path.join(USER_CONFIG_DIR, 'python.d')
+PLUGINS_STOCK_CONFIG_DIR = os.path.join(STOCK_CONFIG_DIR, 'python.d')
+
+
+PLUGINS_DIR = os.path.abspath(os.getenv(
+    'NETDATA_PLUGINS_DIR',
+    os.path.dirname(__file__)) + '/../python.d')
+
+
+PYTHON_MODULES_DIR = os.path.join(PLUGINS_DIR, 'python_modules')
+
+sys.path.append(PYTHON_MODULES_DIR)
+
+from bases.loaders import ModuleAndConfigLoader  # noqa: E402
+from bases.loggers import PythonDLogger  # noqa: E402
+from bases.collection import setdefault_values, run_and_exit  # noqa: E402
+
+try:
+    from collections import OrderedDict
+except ImportError:
+    from third_party.ordereddict import OrderedDict
+
+BASE_CONFIG = {'update_every': os.getenv('NETDATA_UPDATE_EVERY', 1),
+               'retries': 60,
+               'priority': 60000,
+               'autodetection_retry': 0,
+               'chart_cleanup': 10,
+               'name': str()}
+
+
+MODULE_EXTENSION = '.chart.py'
+OBSOLETE_MODULES = ['apache_cache', 'gunicorn_log', 'nginx_log']
+
+
+def module_ok(m):
+    return m.endswith(MODULE_EXTENSION) and m[:-len(MODULE_EXTENSION)] not in OBSOLETE_MODULES
+
+
+ALL_MODULES = [m for m in sorted(os.listdir(PLUGINS_DIR)) if module_ok(m)]
+
+
+def parse_cmd():
+    debug = 'debug' in argv[1:]
+    trace = 'trace' in argv[1:]
+    override_update_every = next((arg for arg in argv[1:] if arg.isdigit() and int(arg) > 1), False)
+    modules = [''.join([m, MODULE_EXTENSION]) for m in argv[1:] if ''.join([m, MODULE_EXTENSION]) in ALL_MODULES]
+    return debug, trace, override_update_every, modules or ALL_MODULES
+
+
+def multi_job_check(config):
+    return next((True for key in config if isinstance(config[key], dict)), False)
+
+
+class RawModule:
+    def __init__(self, name, path, explicitly_enabled=True):
+        self.name = name
+        self.path = path
+        self.explicitly_enabled = explicitly_enabled
+
+
+class Job(object):
+    def __init__(self, initialized_job, job_id):
+        """
+        :param initialized_job: instance of <Class Service>
+        :param job_id: <str>
+        """
+        self.job = initialized_job
+        self.id = job_id  # key in Modules.jobs()
+        self.module_name = self.job.__module__  # used in Plugin.delete_job()
+        self.recheck_every = self.job.configuration.pop('autodetection_retry')
+        self.checked = False  # used in Plugin.check_job()
+        self.created = False  # used in Plugin.create_job_charts()
+        if self.job.update_every < int(OVERRIDE_UPDATE_EVERY):
+            self.job.update_every = int(OVERRIDE_UPDATE_EVERY)
+
+    def __getattr__(self, item):
+        return getattr(self.job, item)
+
+    def __repr__(self):
+        return self.job.__repr__()
+
+    def is_dead(self):
+        return bool(self.ident) and not self.is_alive()
+
+    def not_launched(self):
+        return not bool(self.ident)
+
+    def is_autodetect(self):
+        return self.recheck_every
+
+
+class Module(object):
+    def __init__(self, service, config):
+        """
+        :param service: <Module>
+        :param config: <dict>
+        """
+        self.service = service
+        self.name = service.__name__
+        self.config = self.jobs_configurations_builder(config)
+        self.jobs = OrderedDict()
+        self.counter = 1
+
+        self.initialize_jobs()
+
+    def __repr__(self):
+        return "<Class Module '{name}'>".format(name=self.name)
+
+    def __iter__(self):
+        return iter(OrderedDict(self.jobs).values())
+
+    def __getitem__(self, item):
+        return self.jobs[item]
+
+    def __delitem__(self, key):
+        del self.jobs[key]
+
+    def __len__(self):
+        return len(self.jobs)
+
+    def __bool__(self):
+        return bool(self.jobs)
+
+    def __nonzero__(self):
+        return self.__bool__()
+
+    def jobs_configurations_builder(self, config):
+        """
+        :param config: <dict>
+        :return:
+        """
+        counter = 0
+        job_base_config = dict()
+
+        for attr in BASE_CONFIG:
+            job_base_config[attr] = config.pop(attr, getattr(self.service, attr, BASE_CONFIG[attr]))
+
+        if not config:
+            config = {str(): dict()}
+        elif not multi_job_check(config):
+            config = {str(): config}
+
+        for job_name in config:
+            if not isinstance(config[job_name], dict):
+                continue
+
+            job_config = setdefault_values(config[job_name], base_dict=job_base_config)
+            job_name = sub(r'\s+', '_', job_name)
+            config[job_name]['name'] = sub(r'\s+', '_', config[job_name]['name'])
+            counter += 1
+            job_id = 'job' + str(counter).zfill(3)
+
+            yield job_id, job_name, job_config
+
+    def initialize_jobs(self):
+        """
+        :return:
+        """
+        for job_id, job_name, job_config in self.config:
+            job_config['job_name'] = job_name
+            job_config['override_name'] = job_config.pop('name')
+
+            try:
+                initialized_job = self.service.Service(configuration=job_config)
+            except Exception as error:
+                Logger.error("job initialization: '{module_name} {job_name}' "
+                             "=> ['FAILED'] ({error})".format(module_name=self.name,
+                                                              job_name=job_name,
+                                                              error=error))
+                continue
+            else:
+                Logger.debug("job initialization: '{module_name} {job_name}' "
+                             "=> ['OK']".format(module_name=self.name,
+                                                job_name=job_name or self.name))
+                self.jobs[job_id] = Job(initialized_job=initialized_job,
+                                        job_id=job_id)
+        del self.config
+        del self.service
+
+
+class Plugin(object):
+    def __init__(self):
+        self.loader = ModuleAndConfigLoader()
+        self.modules = OrderedDict()
+        self.sleep_time = 1
+        self.runs_counter = 0
+
+        user_config = os.path.join(USER_CONFIG_DIR, 'python.d.conf')
+        stock_config = os.path.join(STOCK_CONFIG_DIR, 'python.d.conf')
+
+        Logger.debug("loading '{0}'".format(user_config))
+        self.config, error = self.loader.load_config_from_file(user_config)
+
+        if error:
+            Logger.error("cannot load '{0}': {1}. Will try stock version.".format(user_config, error))
+            Logger.debug("loading '{0}'".format(stock_config))
+            self.config, error = self.loader.load_config_from_file(stock_config)
+        if error:
+            Logger.error("cannot load '{0}': {1}".format(stock_config, error))
+
+        self.do_gc = self.config.get("gc_run", GC_RUN)
+        self.gc_interval = self.config.get("gc_interval", GC_COLLECT_EVERY)
+
+        if not self.config.get('enabled', True):
+            run_and_exit(Logger.info)('DISABLED in configuration file.')
+
+        self.load_and_initialize_modules()
+        if not self.modules:
+            run_and_exit(Logger.info)('No modules to run. Exit...')
+
+    def __iter__(self):
+        return iter(OrderedDict(self.modules).values())
+
+    @property
+    def jobs(self):
+        return (job for mod in self for job in mod)
+
+    @property
+    def dead_jobs(self):
+        return (job for job in self.jobs if job.is_dead())
+
+    @property
+    def autodetect_jobs(self):
+        return [job for job in self.jobs if job.not_launched()]
+
+    def enabled_modules(self):
+        for mod in MODULES_TO_RUN:
+            mod_name = mod[:-len(MODULE_EXTENSION)]
+            mod_path = os.path.join(PLUGINS_DIR, mod)
+            if any(
+                [
+                    self.config.get('default_run', True) and self.config.get(mod_name, True),
+                    (not self.config.get('default_run')) and self.config.get(mod_name),
+                ]
+            ):
+                yield RawModule(
+                    name=mod_name,
+                    path=mod_path,
+                    explicitly_enabled=self.config.get(mod_name),
+                )
+
+    def load_and_initialize_modules(self):
+        for mod in self.enabled_modules():
+
+            # Load module from file ------------------------------------------------------------
+            loaded_module, error = self.loader.load_module_from_file(mod.name, mod.path)
+            log = Logger.error if error else Logger.debug
+            log("module load source: '{module_name}' => [{status}]".format(status='FAILED' if error else 'OK',
+                                                                           module_name=mod.name))
+            if error:
+                Logger.error("load source error : {0}".format(error))
+                continue
+
+            # Load module config from file ------------------------------------------------------
+            user_config = os.path.join(PLUGINS_USER_CONFIG_DIR, mod.name + '.conf')
+            stock_config = os.path.join(PLUGINS_STOCK_CONFIG_DIR, mod.name + '.conf')
+
+            Logger.debug("loading '{0}'".format(user_config))
+            loaded_config, error = self.loader.load_config_from_file(user_config)
+            if error:
+                Logger.error("cannot load '{0}' : {1}. Will try stock version.".format(user_config, error))
+                Logger.debug("loading '{0}'".format(stock_config))
+                loaded_config, error = self.loader.load_config_from_file(stock_config)
+
+            if error:
+                Logger.error("cannot load '{0}': {1}".format(stock_config, error))
+
+            # Skip disabled modules
+            if getattr(loaded_module, 'disabled_by_default', False) and not mod.explicitly_enabled:
+                Logger.info("module '{0}' disabled by default".format(loaded_module.__name__))
+                continue
+
+            # Module initialization ---------------------------------------------------
+
+            initialized_module = Module(service=loaded_module, config=loaded_config)
+            Logger.debug("module status: '{module_name}' => [{status}] "
+                         "(jobs: {jobs_number})".format(status='OK' if initialized_module else 'FAILED',
+                                                        module_name=initialized_module.name,
+                                                        jobs_number=len(initialized_module)))
+            if initialized_module:
+                self.modules[initialized_module.name] = initialized_module
+
+    @staticmethod
+    def check_job(job):
+        """
+        :param job: <Job>
+        :return:
+        """
+        try:
+            check_ok = bool(job.check())
+        except Exception as error:
+            job.error('check() unhandled exception: {error}'.format(error=error))
+            return None
+        else:
+            return check_ok
+
+    @staticmethod
+    def create_job_charts(job):
+        """
+        :param job: <Job>
+        :return:
+        """
+        try:
+            create_ok = job.create()
+        except Exception as error:
+            job.error('create() unhandled exception: {error}'.format(error=error))
+            return False
+        else:
+            return create_ok
+
+    def delete_job(self, job):
+        """
+        :param job: <Job>
+        :return:
+        """
+        del self.modules[job.module_name][job.id]
+
+    def run_check(self):
+        checked = list()
+        for job in self.jobs:
+            if job.name in checked:
+                job.info('check() => [DROPPED] (already served by another job)')
+                self.delete_job(job)
+                continue
+            ok = self.check_job(job)
+            if ok:
+                job.info('check() => [OK]')
+                checked.append(job.name)
+                job.checked = True
+                continue
+            if not job.is_autodetect() or ok is None:
+                job.info('check() => [FAILED]')
+                self.delete_job(job)
+            else:
+                job.info('check() => [RECHECK] (autodetection_retry: {0})'.format(job.recheck_every))
+
+    def run_create(self):
+        for job in self.jobs:
+            if not job.checked:
+                #  skip autodetection_retry jobs
+                continue
+            ok = self.create_job_charts(job)
+            if ok:
+                job.debug('create() => [OK] (charts: {0})'.format(len(job.charts)))
+                job.created = True
+                continue
+            job.error('create() => [FAILED] (charts: {0})'.format(len(job.charts)))
+            self.delete_job(job)
+
+    def start(self):
+        self.run_check()
+        self.run_create()
+        for job in self.jobs:
+            if job.created:
+                job.start()
+
+        while True:
+            if threading.active_count() <= 1 and not self.autodetect_jobs:
+                run_and_exit(Logger.info)('FINISHED')
+
+            sleep(self.sleep_time)
+            self.cleanup()
+            self.autodetect_retry()
+
+            # FIXME: https://github.com/netdata/netdata/issues/3817
+            if self.do_gc and self.runs_counter % self.gc_interval == 0:
+                v = gc.collect()
+                Logger.debug("GC full collection run result: {0}".format(v))
+
+    def cleanup(self):
+        for job in self.dead_jobs:
+            self.delete_job(job)
+        for mod in self:
+            if not mod:
+                del self.modules[mod.name]
+
+    def autodetect_retry(self):
+        self.runs_counter += self.sleep_time
+        for job in self.autodetect_jobs:
+            if self.runs_counter % job.recheck_every == 0:
+                checked = self.check_job(job)
+                if checked:
+                    created = self.create_job_charts(job)
+                    if not created:
+                        self.delete_job(job)
+                        continue
+                    job.start()
+
+
+if __name__ == '__main__':
+    DEBUG, TRACE, OVERRIDE_UPDATE_EVERY, MODULES_TO_RUN = parse_cmd()
+    Logger = PythonDLogger()
+    if DEBUG:
+        Logger.logger.severity = 'DEBUG'
+    if TRACE:
+        Logger.log_traceback = True
+    Logger.info('Using python {version}'.format(version=PY_VERSION[0]))
+
+    plugin = Plugin()
+    plugin.start()
diff --git a/python.d/python_modules/third_party/__init__.py b/collectors/python.d.plugin/python_modules/__init__.py
index e69de29bb..e69de29bb 100644
--- a/python.d/python_modules/third_party/__init__.py
+++ b/collectors/python.d.plugin/python_modules/__init__.py
diff --git a/python.d/python_modules/bases/FrameworkServices/ExecutableService.py b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/ExecutableService.py
index a71f2bfd2..72f9ff714 100644
--- a/python.d/python_modules/bases/FrameworkServices/ExecutableService.py
+++ b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/ExecutableService.py
@@ -2,6 +2,7 @@
 # Description:
 # Author: Pawel Krupa (paulfantom)
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import os
 
@@ -16,15 +17,15 @@ class ExecutableService(SimpleService):
         SimpleService.__init__(self, configuration=configuration, name=name)
         self.command = None
 
-    def _get_raw_data(self, stderr=False):
+    def _get_raw_data(self, stderr=False, command=None):
         """
         Get raw data from executed command
         :return: <list>
         """
         try:
-            p = Popen(self.command, stdout=PIPE, stderr=PIPE)
+            p = Popen(command if command else self.command, stdout=PIPE, stderr=PIPE)
         except Exception as error:
-            self.error('Executing command {command} resulted in error: {error}'.format(command=self.command,
+            self.error('Executing command {command} resulted in error: {error}'.format(command=command or self.command,
                                                                                        error=error))
             return None
         data = list()
@@ -35,7 +36,7 @@ class ExecutableService(SimpleService):
             except TypeError:
                 continue
 
-        return data or None
+        return data
 
     def check(self):
         """
diff --git a/python.d/python_modules/bases/FrameworkServices/LogService.py b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/LogService.py
index 45daa2446..5acfd73f8 100644
--- a/python.d/python_modules/bases/FrameworkServices/LogService.py
+++ b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/LogService.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 # Description:
 # Author: Pawel Krupa (paulfantom)
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from glob import glob
 import os
diff --git a/python.d/python_modules/bases/FrameworkServices/MySQLService.py b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/MySQLService.py
index 3acc5b109..53807e2c4 100644
--- a/python.d/python_modules/bases/FrameworkServices/MySQLService.py
+++ b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/MySQLService.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description:
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from sys import exc_info
 
diff --git a/python.d/python_modules/bases/FrameworkServices/SimpleService.py b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/SimpleService.py
index 177332c1f..dd53fbc14 100644
--- a/python.d/python_modules/bases/FrameworkServices/SimpleService.py
+++ b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/SimpleService.py
@@ -2,13 +2,12 @@
 # Description:
 # Author: Pawel Krupa (paulfantom)
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from threading import Thread
+from time import sleep
 
-try:
-    from time import sleep, monotonic as time
-except ImportError:
-    from time import sleep, time
+from third_party.monotonic import monotonic
 
 from bases.charts import Charts, ChartError, create_runtime_chart
 from bases.collection import OldVersionCompatibility, safe_print
@@ -168,7 +167,7 @@ class SimpleService(Thread, PythonDLimitedLogger, OldVersionCompatibility, objec
                    'retries: {retries}'.format(freq=job.FREQ, retries=job.RETRIES_MAX - job.RETRIES))
 
         while True:
-            job.START_RUN = time()
+            job.START_RUN = monotonic()
 
             job.NEXT_RUN = job.START_RUN - (job.START_RUN % job.FREQ) + job.FREQ + job.PENALTY
 
@@ -189,7 +188,7 @@ class SimpleService(Thread, PythonDLimitedLogger, OldVersionCompatibility, objec
                 if not self.manage_retries():
                     return
             else:
-                job.ELAPSED = int((time() - job.START_RUN) * 1e3)
+                job.ELAPSED = int((monotonic() - job.START_RUN) * 1e3)
                 job.PREV_UPDATE = job.START_RUN
                 job.RETRIES, job.PENALTY = 0, 0
                 safe_print(RUNTIME_CHART_UPDATE.format(job_name=self.name,
@@ -253,7 +252,7 @@ class SimpleService(Thread, PythonDLimitedLogger, OldVersionCompatibility, objec
             self.debug('sleeping for {sleep_time} to reach frequency of {freq} sec'.format(sleep_time=sleep_time,
                                                                                            freq=job.FREQ + job.PENALTY))
             sleep(sleep_time)
-            job.START_RUN = time()
+            job.START_RUN = monotonic()
 
     def get_data(self):
         return self._get_data()
diff --git a/python.d/python_modules/bases/FrameworkServices/SocketService.py b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/SocketService.py
index 8d27ae660..e85455307 100644
--- a/python.d/python_modules/bases/FrameworkServices/SocketService.py
+++ b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/SocketService.py
@@ -1,9 +1,18 @@
 # -*- coding: utf-8 -*-
 # Description:
 # Author: Pawel Krupa (paulfantom)
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import socket
 
+try:
+    import ssl
+except ImportError:
+    _TLS_SUPPORT = False
+else:
+    _TLS_SUPPORT = True
+
 from bases.FrameworkServices.SimpleService import SimpleService
 
 
@@ -16,6 +25,9 @@ class SocketService(SimpleService):
         self.unix_socket = None
         self.dgram_socket = False
         self.request = ''
+        self.tls = False
+        self.cert = None
+        self.key = None
         self.__socket_config = None
         self.__empty_request = "".encode()
         SimpleService.__init__(self, configuration=configuration, name=name)
@@ -26,7 +38,7 @@ class SocketService(SimpleService):
                                                                   message=message))
         else:
             if self.__socket_config is not None:
-                af, sock_type, proto, canon_name, sa = self.__socket_config
+                _, _, _, _, sa = self.__socket_config
                 self.error('socket to "{address}" port {port}: {message}'.format(address=sa[0],
                                                                                  port=sa[1],
                                                                                  message=message))
@@ -44,7 +56,7 @@ class SocketService(SimpleService):
                 self.error("Cannot create socket to 'None':")
                 return False
 
-        af, sock_type, proto, canon_name, sa = res
+        af, sock_type, proto, _, sa = res
         try:
             self.debug('Creating socket to "{address}", port {port}'.format(address=sa[0], port=sa[1]))
             self._sock = socket.socket(af, sock_type, proto)
@@ -56,10 +68,24 @@ class SocketService(SimpleService):
             self.__socket_config = None
             return False
 
+        if self.tls:
+            try:
+                self.debug('Encapsulating socket with TLS')
+                self._sock = ssl.wrap_socket(self._sock,
+                                             keyfile=self.key,
+                                             certfile=self.cert,
+                                             server_side=False,
+                                             cert_reqs=ssl.CERT_NONE)
+            except (socket.error, ssl.SSLError) as error:
+                self.error('Failed to wrap socket.')
+                self._disconnect()
+                self.__socket_config = None
+                return False
+
         try:
             self.debug('connecting socket to "{address}", port {port}'.format(address=sa[0], port=sa[1]))
             self._sock.connect(sa)
-        except socket.error as error:
+        except (socket.error, ssl.SSLError) as error:
             self.error('Failed to connect to "{address}", port {port}, error: {error}'.format(address=sa[0],
                                                                                               port=sa[1],
                                                                                               error=error))
@@ -147,7 +173,7 @@ class SocketService(SimpleService):
                 pass
             self._sock = None
 
-    def _send(self):
+    def _send(self, request=None):
         """
         Send request.
         :return: boolean
@@ -155,8 +181,8 @@ class SocketService(SimpleService):
         # Send request if it is needed
         if self.request != self.__empty_request:
             try:
-                self.debug('sending request: {0}'.format(self.request))
-                self._sock.send(self.request)
+                self.debug('sending request: {0}'.format(request or self.request))
+                self._sock.send(request or self.request)
             except Exception as error:
                 self._socket_error('error sending request: {0}'.format(error))
                 self._disconnect()
@@ -197,7 +223,7 @@ class SocketService(SimpleService):
         self.debug('final response: {0}'.format(data))
         return data
 
-    def _get_raw_data(self, raw=False):
+    def _get_raw_data(self, raw=False, request=None):
         """
         Get raw data with low-level "socket" module.
         :param raw: set `True` to return bytes
@@ -211,7 +237,7 @@ class SocketService(SimpleService):
                 return None
 
         # Send request if it is needed
-        if not self._send():
+        if not self._send(request):
             return None
 
         data = self._receive(raw)
@@ -249,6 +275,28 @@ class SocketService(SimpleService):
             except (KeyError, TypeError):
                 self.debug('No port specified. Using: "{0}"'.format(self.port))
 
+            self.tls = bool(self.configuration.get('tls', self.tls))
+            if self.tls and not _TLS_SUPPORT:
+                self.warning('TLS requested but no TLS module found, disabling TLS support.')
+                self.tls = False
+            if _TLS_SUPPORT and not self.tls:
+                self.debug('No TLS preference specified, not using TLS.')
+
+            if self.tls and _TLS_SUPPORT:
+                self.key = self.configuration.get('tls_key_file')
+                self.cert = self.configuration.get('tls_cert_file')
+                if not self.cert:
+                    # If there's not a valid certificate, clear the key too.
+                    self.debug('No valid TLS client certificate configuration found.')
+                    self.key = None
+                    self.cert = None
+                elif not self.key:
+                    # If a key isn't listed, the config may still be
+                    # valid, because there may be a key attached to the
+                    # certificate.
+                    self.info('No TLS client key specified, assuming it\'s attached to the certificate.')
+                    self.key = None
+
         try:
             self.request = str(self.configuration['request'])
         except (KeyError, TypeError):
diff --git a/python.d/python_modules/bases/FrameworkServices/UrlService.py b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/UrlService.py
index bb340ba3b..856f38851 100644
--- a/python.d/python_modules/bases/FrameworkServices/UrlService.py
+++ b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/UrlService.py
@@ -2,6 +2,7 @@
 # Description:
 # Author: Pawel Krupa (paulfantom)
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import urllib3
 
@@ -22,8 +23,13 @@ class UrlService(SimpleService):
         self.proxy_user = self.configuration.get('proxy_user')
         self.proxy_password = self.configuration.get('proxy_pass')
         self.proxy_url = self.configuration.get('proxy_url')
+        self.method = self.configuration.get('method', 'GET')
         self.header = self.configuration.get('header')
         self.request_timeout = self.configuration.get('timeout', 1)
+        self.tls_verify = self.configuration.get('tls_verify')
+        self.tls_ca_file = self.configuration.get('tls_ca_file')
+        self.tls_key_file = self.configuration.get('tls_key_file')
+        self.tls_cert_file = self.configuration.get('tls_cert_file')
         self._manager = None
 
     def __make_headers(self, **header_kw):
@@ -60,9 +66,21 @@ class UrlService(SimpleService):
         else:
             manager = urllib3.PoolManager
             params = dict(headers=header)
+        tls_cert_file = self.tls_cert_file
+        if tls_cert_file:
+            params['cert_file'] = tls_cert_file
+            # NOTE: key_file is useless without cert_file, but
+            #       cert_file may include the key as well.
+            tls_key_file = self.tls_key_file
+            if tls_key_file:
+                params['key_file'] = tls_key_file
+        tls_ca_file = self.tls_ca_file
+        if tls_ca_file:
+            params['ca_certs'] = tls_ca_file
         try:
             url = header_kw.get('url') or self.url
-            if url.startswith('https'):
+            if url.startswith('https') and not self.tls_verify and not tls_ca_file:
+                params['ca_certs'] = None
                 return manager(assert_hostname=False, cert_reqs='CERT_NONE', **params)
             return manager(**params)
         except (urllib3.exceptions.ProxySchemeUnknown, TypeError) as error:
@@ -77,13 +95,13 @@ class UrlService(SimpleService):
         try:
             status, data = self._get_raw_data_with_status(url, manager)
         except (urllib3.exceptions.HTTPError, TypeError, AttributeError) as error:
-            self.error('Url: {url}. Error: {error}'.format(url=url, error=error))
+            self.error('Url: {url}. Error: {error}'.format(url=url or self.url, error=error))
             return None
 
         if status == 200:
-            return data.decode()
+            return data
         else:
-            self.debug('Url: {url}. Http response status code: {code}'.format(url=url, code=status))
+            self.debug('Url: {url}. Http response status code: {code}'.format(url=url or self.url, code=status))
             return None
 
     def _get_raw_data_with_status(self, url=None, manager=None, retries=1, redirect=True):
@@ -93,13 +111,15 @@ class UrlService(SimpleService):
         """
         url = url or self.url
         manager = manager or self._manager
-        response = manager.request(method='GET',
+        response = manager.request(method=self.method,
                                    url=url,
                                    timeout=self.request_timeout,
                                    retries=retries,
                                    headers=manager.headers,
                                    redirect=redirect)
-        return response.status, response.data
+        if isinstance(response.data, str):
+            return response.status, response.data
+        return response.status, response.data.decode()
 
     def check(self):
         """
diff --git a/python.d/python_modules/urllib3/contrib/__init__.py b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/__init__.py
index e69de29bb..e69de29bb 100644
--- a/python.d/python_modules/urllib3/contrib/__init__.py
+++ b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/__init__.py
diff --git a/python.d/python_modules/urllib3/contrib/_securetransport/__init__.py b/collectors/python.d.plugin/python_modules/bases/__init__.py
index e69de29bb..e69de29bb 100644
--- a/python.d/python_modules/urllib3/contrib/_securetransport/__init__.py
+++ b/collectors/python.d.plugin/python_modules/bases/__init__.py
diff --git a/python.d/python_modules/bases/charts.py b/collectors/python.d.plugin/python_modules/bases/charts.py
index 5394fbf64..2963739ec 100644
--- a/python.d/python_modules/bases/charts.py
+++ b/collectors/python.d.plugin/python_modules/bases/charts.py
@@ -1,10 +1,11 @@
 # -*- coding: utf-8 -*-
 # Description:
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.collection import safe_print
 
-CHART_PARAMS = ['type', 'id', 'name', 'title', 'units', 'family', 'context', 'chart_type']
+CHART_PARAMS = ['type', 'id', 'name', 'title', 'units', 'family', 'context', 'chart_type', 'hidden']
 DIMENSION_PARAMS = ['id', 'name', 'algorithm', 'multiplier', 'divisor', 'hidden']
 VARIABLE_PARAMS = ['id', 'value']
 
@@ -13,9 +14,9 @@ DIMENSION_ALGORITHMS = ['absolute', 'incremental', 'percentage-of-absolute-row',
 
 CHART_BEGIN = 'BEGIN {type}.{id} {since_last}\n'
 CHART_CREATE = "CHART {type}.{id} '{name}' '{title}' '{units}' '{family}' '{context}' " \
-               "{chart_type} {priority} {update_every} '' 'python.d.plugin' '{module_name}'\n"
+               "{chart_type} {priority} {update_every} '{hidden}' 'python.d.plugin' '{module_name}'\n"
 CHART_OBSOLETE = "CHART {type}.{id} '{name}' '{title}' '{units}' '{family}' '{context}' " \
-               "{chart_type} {priority} {update_every} 'obsolete'\n"
+               "{chart_type} {priority} {update_every} '{hidden} obsolete'\n"
 
 
 DIMENSION_CREATE = "DIMENSION '{id}' '{name}' {algorithm} {multiplier} {divisor} '{hidden}'\n"
@@ -151,6 +152,8 @@ class Chart:
                                          id=self.params['id'])
         if self.params.get('chart_type') not in CHART_TYPES:
             self.params['chart_type'] = 'absolute'
+        hidden = str(self.params.get('hidden', ''))
+        self.params['hidden'] = 'hidden' if hidden == 'hidden' else ''
 
         self.dimensions = list()
         self.variables = set()
@@ -304,6 +307,12 @@ class Dimension:
             return self.id == other
         return self.id == other.id
 
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(repr(self))
+
     def create(self):
         return DIMENSION_CREATE.format(**self.params)
 
@@ -360,6 +369,9 @@ class ChartVariable:
             return self.id == other.id
         return False
 
+    def __ne__(self, other):
+        return not self == other
+
     def __hash__(self):
         return hash(repr(self))
 
diff --git a/python.d/python_modules/bases/collection.py b/collectors/python.d.plugin/python_modules/bases/collection.py
index e03b4f58e..479a3b610 100644
--- a/python.d/python_modules/bases/collection.py
+++ b/collectors/python.d.plugin/python_modules/bases/collection.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description:
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import os
 
diff --git a/python.d/python_modules/bases/loaders.py b/collectors/python.d.plugin/python_modules/bases/loaders.py
index d18b9dcd0..9eb268ce7 100644
--- a/python.d/python_modules/bases/loaders.py
+++ b/collectors/python.d.plugin/python_modules/bases/loaders.py
@@ -1,18 +1,27 @@
 # -*- coding: utf-8 -*-
 # Description:
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import types
+
 from sys import version_info
 
 PY_VERSION = version_info[:2]
 
+try:
+    if PY_VERSION > (3, 1):
+        from pyyaml3 import SafeLoader as YamlSafeLoader
+    else:
+        from pyyaml2 import SafeLoader as YamlSafeLoader
+except ImportError:
+    from yaml import SafeLoader as YamlSafeLoader
+
+
 if PY_VERSION > (3, 1):
-    from pyyaml3 import SafeLoader as YamlSafeLoader
     from importlib.machinery import SourceFileLoader
     DEFAULT_MAPPING_TAG = 'tag:yaml.org,2002:map'
 else:
-    from pyyaml2 import SafeLoader as YamlSafeLoader
     from imp import load_source as SourceFileLoader
     DEFAULT_MAPPING_TAG = u'tag:yaml.org,2002:map'
 
@@ -26,6 +35,14 @@ def dict_constructor(loader, node):
     return OrderedDict(loader.construct_pairs(node))
 
 
+def safe_load(stream):
+    loader = YamlSafeLoader(stream)
+    try:
+        return loader.get_single_data()
+    finally:
+        loader.dispose()
+
+
 YamlSafeLoader.add_constructor(DEFAULT_MAPPING_TAG, dict_constructor)
 
 
diff --git a/python.d/python_modules/bases/loggers.py b/collectors/python.d.plugin/python_modules/bases/loggers.py
index fc40b83d3..39be77a79 100644
--- a/python.d/python_modules/bases/loggers.py
+++ b/collectors/python.d.plugin/python_modules/bases/loggers.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description:
 # Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import logging
 import traceback
diff --git a/python.d/python_modules/pyyaml2/__init__.py b/collectors/python.d.plugin/python_modules/pyyaml2/__init__.py
index 76e19e13f..4d560e438 100644
--- a/python.d/python_modules/pyyaml2/__init__.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/__init__.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 from error import *
 
diff --git a/python.d/python_modules/pyyaml2/composer.py b/collectors/python.d.plugin/python_modules/pyyaml2/composer.py
index 06e5ac782..6b41b8067 100644
--- a/python.d/python_modules/pyyaml2/composer.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/composer.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['Composer', 'ComposerError']
 
diff --git a/python.d/python_modules/pyyaml2/constructor.py b/collectors/python.d.plugin/python_modules/pyyaml2/constructor.py
index 635faac3e..8ad1b90a7 100644
--- a/python.d/python_modules/pyyaml2/constructor.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/constructor.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['BaseConstructor', 'SafeConstructor', 'Constructor',
     'ConstructorError']
diff --git a/python.d/python_modules/pyyaml2/cyaml.py b/collectors/python.d.plugin/python_modules/pyyaml2/cyaml.py
index 68dcd7519..2858ab479 100644
--- a/python.d/python_modules/pyyaml2/cyaml.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/cyaml.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['CBaseLoader', 'CSafeLoader', 'CLoader',
         'CBaseDumper', 'CSafeDumper', 'CDumper']
diff --git a/python.d/python_modules/pyyaml2/dumper.py b/collectors/python.d.plugin/python_modules/pyyaml2/dumper.py
index f811d2c91..3685cbeeb 100644
--- a/python.d/python_modules/pyyaml2/dumper.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/dumper.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['BaseDumper', 'SafeDumper', 'Dumper']
 
diff --git a/python.d/python_modules/pyyaml2/emitter.py b/collectors/python.d.plugin/python_modules/pyyaml2/emitter.py
index e5bcdcccb..9a460a0fd 100644
--- a/python.d/python_modules/pyyaml2/emitter.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/emitter.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 # Emitter expects events obeying the following grammar:
 # stream ::= STREAM-START document* STREAM-END
diff --git a/python.d/python_modules/pyyaml2/error.py b/collectors/python.d.plugin/python_modules/pyyaml2/error.py
index 577686db5..5466be721 100644
--- a/python.d/python_modules/pyyaml2/error.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/error.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['Mark', 'YAMLError', 'MarkedYAMLError']
 
diff --git a/python.d/python_modules/pyyaml2/events.py b/collectors/python.d.plugin/python_modules/pyyaml2/events.py
index f79ad389c..283452add 100644
--- a/python.d/python_modules/pyyaml2/events.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/events.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 # Abstract classes.
 
diff --git a/python.d/python_modules/pyyaml2/loader.py b/collectors/python.d.plugin/python_modules/pyyaml2/loader.py
index 293ff467b..1c195531f 100644
--- a/python.d/python_modules/pyyaml2/loader.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/loader.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['BaseLoader', 'SafeLoader', 'Loader']
 
diff --git a/python.d/python_modules/pyyaml2/nodes.py b/collectors/python.d.plugin/python_modules/pyyaml2/nodes.py
index c4f070c41..ed2a1b43e 100644
--- a/python.d/python_modules/pyyaml2/nodes.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/nodes.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 class Node(object):
     def __init__(self, tag, value, start_mark, end_mark):
diff --git a/python.d/python_modules/pyyaml2/parser.py b/collectors/python.d.plugin/python_modules/pyyaml2/parser.py
index f9e3057f3..97ba08337 100644
--- a/python.d/python_modules/pyyaml2/parser.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/parser.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 # The following YAML grammar is LL(1) and is parsed by a recursive descent
 # parser.
diff --git a/python.d/python_modules/pyyaml2/reader.py b/collectors/python.d.plugin/python_modules/pyyaml2/reader.py
index 3249e6b9f..8d422954e 100644
--- a/python.d/python_modules/pyyaml2/reader.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/reader.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 # This module contains abstractions for the input stream. You don't have to
 # looks further, there are no pretty code.
 #
diff --git a/python.d/python_modules/pyyaml2/representer.py b/collectors/python.d.plugin/python_modules/pyyaml2/representer.py
index 5f4fc70db..0a1404eca 100644
--- a/python.d/python_modules/pyyaml2/representer.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/representer.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['BaseRepresenter', 'SafeRepresenter', 'Representer',
     'RepresenterError']
diff --git a/python.d/python_modules/pyyaml2/resolver.py b/collectors/python.d.plugin/python_modules/pyyaml2/resolver.py
index 6b5ab8759..49922debf 100644
--- a/python.d/python_modules/pyyaml2/resolver.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/resolver.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['BaseResolver', 'Resolver']
 
diff --git a/python.d/python_modules/pyyaml2/scanner.py b/collectors/python.d.plugin/python_modules/pyyaml2/scanner.py
index 5228fad65..971da6127 100644
--- a/python.d/python_modules/pyyaml2/scanner.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/scanner.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 # Scanner produces tokens of the following types:
 # STREAM-START
diff --git a/python.d/python_modules/pyyaml2/serializer.py b/collectors/python.d.plugin/python_modules/pyyaml2/serializer.py
index 0bf1e96dc..15fdbb0c0 100644
--- a/python.d/python_modules/pyyaml2/serializer.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/serializer.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['Serializer', 'SerializerError']
 
diff --git a/python.d/python_modules/pyyaml2/tokens.py b/collectors/python.d.plugin/python_modules/pyyaml2/tokens.py
index 4d0b48a39..c5c4fb116 100644
--- a/python.d/python_modules/pyyaml2/tokens.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml2/tokens.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 class Token(object):
     def __init__(self, start_mark, end_mark):
diff --git a/python.d/python_modules/pyyaml3/__init__.py b/collectors/python.d.plugin/python_modules/pyyaml3/__init__.py
index a5e20f94d..a884b33cf 100644
--- a/python.d/python_modules/pyyaml3/__init__.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/__init__.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 from .error import *
 
diff --git a/python.d/python_modules/pyyaml3/composer.py b/collectors/python.d.plugin/python_modules/pyyaml3/composer.py
index d5c6a7acd..c418bba91 100644
--- a/python.d/python_modules/pyyaml3/composer.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/composer.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['Composer', 'ComposerError']
 
diff --git a/python.d/python_modules/pyyaml3/constructor.py b/collectors/python.d.plugin/python_modules/pyyaml3/constructor.py
index 981543aeb..ee09a7a7e 100644
--- a/python.d/python_modules/pyyaml3/constructor.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/constructor.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['BaseConstructor', 'SafeConstructor', 'Constructor',
     'ConstructorError']
diff --git a/python.d/python_modules/pyyaml3/cyaml.py b/collectors/python.d.plugin/python_modules/pyyaml3/cyaml.py
index d5cb87e99..e6c16d894 100644
--- a/python.d/python_modules/pyyaml3/cyaml.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/cyaml.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['CBaseLoader', 'CSafeLoader', 'CLoader',
         'CBaseDumper', 'CSafeDumper', 'CDumper']
diff --git a/python.d/python_modules/pyyaml3/dumper.py b/collectors/python.d.plugin/python_modules/pyyaml3/dumper.py
index 0b6912877..ba590c6e6 100644
--- a/python.d/python_modules/pyyaml3/dumper.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/dumper.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['BaseDumper', 'SafeDumper', 'Dumper']
 
diff --git a/python.d/python_modules/pyyaml3/emitter.py b/collectors/python.d.plugin/python_modules/pyyaml3/emitter.py
index 34cb145a5..d4be65a8e 100644
--- a/python.d/python_modules/pyyaml3/emitter.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/emitter.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 # Emitter expects events obeying the following grammar:
 # stream ::= STREAM-START document* STREAM-END
diff --git a/python.d/python_modules/pyyaml3/error.py b/collectors/python.d.plugin/python_modules/pyyaml3/error.py
index b796b4dc5..5fec7d449 100644
--- a/python.d/python_modules/pyyaml3/error.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/error.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['Mark', 'YAMLError', 'MarkedYAMLError']
 
diff --git a/python.d/python_modules/pyyaml3/events.py b/collectors/python.d.plugin/python_modules/pyyaml3/events.py
index f79ad389c..283452add 100644
--- a/python.d/python_modules/pyyaml3/events.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/events.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 # Abstract classes.
 
diff --git a/python.d/python_modules/pyyaml3/loader.py b/collectors/python.d.plugin/python_modules/pyyaml3/loader.py
index 08c8f01b3..7ef6cf815 100644
--- a/python.d/python_modules/pyyaml3/loader.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/loader.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['BaseLoader', 'SafeLoader', 'Loader']
 
diff --git a/python.d/python_modules/pyyaml3/nodes.py b/collectors/python.d.plugin/python_modules/pyyaml3/nodes.py
index c4f070c41..ed2a1b43e 100644
--- a/python.d/python_modules/pyyaml3/nodes.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/nodes.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 class Node(object):
     def __init__(self, tag, value, start_mark, end_mark):
diff --git a/python.d/python_modules/pyyaml3/parser.py b/collectors/python.d.plugin/python_modules/pyyaml3/parser.py
index 13a5995d2..bcec7f994 100644
--- a/python.d/python_modules/pyyaml3/parser.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/parser.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 # The following YAML grammar is LL(1) and is parsed by a recursive descent
 # parser.
diff --git a/python.d/python_modules/pyyaml3/reader.py b/collectors/python.d.plugin/python_modules/pyyaml3/reader.py
index f70e920f4..0a515fd64 100644
--- a/python.d/python_modules/pyyaml3/reader.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/reader.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 # This module contains abstractions for the input stream. You don't have to
 # looks further, there are no pretty code.
 #
diff --git a/python.d/python_modules/pyyaml3/representer.py b/collectors/python.d.plugin/python_modules/pyyaml3/representer.py
index 67cd6fd25..756a18dcc 100644
--- a/python.d/python_modules/pyyaml3/representer.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/representer.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['BaseRepresenter', 'SafeRepresenter', 'Representer',
     'RepresenterError']
diff --git a/python.d/python_modules/pyyaml3/resolver.py b/collectors/python.d.plugin/python_modules/pyyaml3/resolver.py
index 0eece2582..50945e04d 100644
--- a/python.d/python_modules/pyyaml3/resolver.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/resolver.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['BaseResolver', 'Resolver']
 
diff --git a/python.d/python_modules/pyyaml3/scanner.py b/collectors/python.d.plugin/python_modules/pyyaml3/scanner.py
index 494d975ba..b55854e8b 100644
--- a/python.d/python_modules/pyyaml3/scanner.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/scanner.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 # Scanner produces tokens of the following types:
 # STREAM-START
diff --git a/python.d/python_modules/pyyaml3/serializer.py b/collectors/python.d.plugin/python_modules/pyyaml3/serializer.py
index fe911e67a..1ba2f7f9d 100644
--- a/python.d/python_modules/pyyaml3/serializer.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/serializer.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 __all__ = ['Serializer', 'SerializerError']
 
diff --git a/python.d/python_modules/pyyaml3/tokens.py b/collectors/python.d.plugin/python_modules/pyyaml3/tokens.py
index 4d0b48a39..c5c4fb116 100644
--- a/python.d/python_modules/pyyaml3/tokens.py
+++ b/collectors/python.d.plugin/python_modules/pyyaml3/tokens.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 
 class Token(object):
     def __init__(self, start_mark, end_mark):
diff --git a/python.d/python_modules/urllib3/packages/backports/__init__.py b/collectors/python.d.plugin/python_modules/third_party/__init__.py
index e69de29bb..e69de29bb 100644
--- a/python.d/python_modules/urllib3/packages/backports/__init__.py
+++ b/collectors/python.d.plugin/python_modules/third_party/__init__.py
diff --git a/collectors/python.d.plugin/python_modules/third_party/boinc_client.py b/collectors/python.d.plugin/python_modules/third_party/boinc_client.py
new file mode 100644
index 000000000..ec21779a0
--- /dev/null
+++ b/collectors/python.d.plugin/python_modules/third_party/boinc_client.py
@@ -0,0 +1,515 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# client.py - Somewhat higher-level GUI_RPC API for BOINC core client
+#
+#    Copyright (C) 2013 Rodrigo Silva (MestreLion) <linux@rodrigosilva.com>
+#    Copyright (C) 2017 Austin S. Hemmelgarn
+#
+# SPDX-License-Identifier: GPL-3.0
+
+# Based on client/boinc_cmd.cpp
+
+import hashlib
+import socket
+import sys
+import time
+from functools import total_ordering
+from xml.etree import ElementTree
+
+GUI_RPC_PASSWD_FILE = "/var/lib/boinc/gui_rpc_auth.cfg"
+
+GUI_RPC_HOSTNAME    = None  # localhost
+GUI_RPC_PORT        = 31416
+GUI_RPC_TIMEOUT     = 1
+
+class Rpc(object):
+    ''' Class to perform GUI RPC calls to a BOINC core client.
+        Usage in a context manager ('with' block) is recommended to ensure
+        disconnect() is called. Using the same instance for all calls is also
+        recommended so it reuses the same socket connection
+        '''
+    def __init__(self, hostname="", port=0, timeout=0, text_output=False):
+        self.hostname = hostname
+        self.port     = port
+        self.timeout  = timeout
+        self.sock = None
+        self.text_output = text_output
+
+    @property
+    def sockargs(self):
+        return (self.hostname, self.port, self.timeout)
+
+    def __enter__(self): self.connect(*self.sockargs); return self
+    def __exit__(self, *args): self.disconnect()
+
+    def connect(self, hostname="", port=0, timeout=0):
+        ''' Connect to (hostname, port) with timeout in seconds.
+            Hostname defaults to None (localhost), and port to 31416
+            Calling multiple times will disconnect previous connection (if any),
+            and (re-)connect to host.
+        '''
+        if self.sock:
+            self.disconnect()
+
+        self.hostname = hostname or GUI_RPC_HOSTNAME
+        self.port     = port     or GUI_RPC_PORT
+        self.timeout  = timeout  or GUI_RPC_TIMEOUT
+
+        self.sock = socket.create_connection(self.sockargs[0:2], self.sockargs[2])
+
+    def disconnect(self):
+        ''' Disconnect from host. Calling multiple times is OK (idempotent)
+        '''
+        if self.sock:
+            self.sock.close()
+            self.sock = None
+
+    def call(self, request, text_output=None):
+        ''' Do an RPC call. Pack and send the XML request and return the
+            unpacked reply. request can be either plain XML text or a
+            xml.etree.ElementTree.Element object. Return ElementTree.Element
+            or XML text according to text_output flag.
+            Will auto-connect if not connected.
+        '''
+        if text_output is None:
+            text_output = self.text_output
+
+        if not self.sock:
+            self.connect(*self.sockargs)
+
+        if not isinstance(request, ElementTree.Element):
+            request = ElementTree.fromstring(request)
+
+        # pack request
+        end = '\003'
+        if sys.version_info[0] < 3:
+            req = "<boinc_gui_rpc_request>\n{0}\n</boinc_gui_rpc_request>\n{1}".format(ElementTree.tostring(request).replace(' />', '/>'), end)
+        else:
+            req = "<boinc_gui_rpc_request>\n{0}\n</boinc_gui_rpc_request>\n{1}".format(ElementTree.tostring(request, encoding='unicode').replace(' />', '/>'), end).encode()
+
+        try:
+            self.sock.sendall(req)
+        except (socket.error, socket.herror, socket.gaierror, socket.timeout):
+            raise
+
+        req = ""
+        while True:
+            try:
+                buf = self.sock.recv(8192)
+                if not buf:
+                    raise socket.error("No data from socket")
+                if sys.version_info[0] >= 3:
+                    buf = buf.decode()
+            except socket.error:
+                raise
+            n = buf.find(end)
+            if not n == -1: break
+            req += buf
+        req += buf[:n]
+
+        # unpack reply (remove root tag, ie: first and last lines)
+        req = '\n'.join(req.strip().rsplit('\n')[1:-1])
+
+        if text_output:
+            return req
+        else:
+            return ElementTree.fromstring(req)
+
+def setattrs_from_xml(obj, xml, attrfuncdict={}):
+    ''' Helper to set values for attributes of a class instance by mapping
+        matching tags from a XML file.
+        attrfuncdict is a dict of functions to customize value data type of
+        each attribute. It falls back to simple int/float/bool/str detection
+        based on values defined in __init__(). This would not be needed if
+        Boinc used standard RPC protocol, which includes data type in XML.
+    '''
+    if not isinstance(xml, ElementTree.Element):
+        xml = ElementTree.fromstring(xml)
+    for e in list(xml):
+        if hasattr(obj, e.tag):
+            attr = getattr(obj, e.tag)
+            attrfunc = attrfuncdict.get(e.tag, None)
+            if attrfunc is None:
+                if   isinstance(attr, bool):  attrfunc = parse_bool
+                elif isinstance(attr, int):   attrfunc = parse_int
+                elif isinstance(attr, float): attrfunc = parse_float
+                elif isinstance(attr, str):   attrfunc = parse_str
+                elif isinstance(attr, list):  attrfunc = parse_list
+                else:                         attrfunc = lambda x: x
+            setattr(obj, e.tag, attrfunc(e))
+        else:
+            pass
+            #print "class missing attribute '%s': %r" % (e.tag, obj)
+    return obj
+
+
+def parse_bool(e):
+    ''' Helper to convert ElementTree.Element.text to boolean.
+        Treat '<foo/>' (and '<foo>[[:blank:]]</foo>') as True
+        Treat '0' and 'false' as False
+    '''
+    if e.text is None:
+        return True
+    else:
+        return bool(e.text) and not e.text.strip().lower() in ('0', 'false')
+
+
+def parse_int(e):
+    ''' Helper to convert ElementTree.Element.text to integer.
+        Treat '<foo/>' (and '<foo></foo>') as 0
+    '''
+    # int(float()) allows casting to int a value expressed as float in XML
+    return 0 if e.text is None else int(float(e.text.strip()))
+
+
+def parse_float(e):
+    ''' Helper to convert ElementTree.Element.text to float. '''
+    return 0.0 if e.text is None else float(e.text.strip())
+
+
+def parse_str(e):
+    ''' Helper to convert ElementTree.Element.text to string. '''
+    return "" if e.text is None else e.text.strip()
+
+
+def parse_list(e):
+    ''' Helper to convert  ElementTree.Element to list. For now, simply return
+        the list of root element's children
+    '''
+    return list(e)
+
+
+class Enum(object):
+    UNKNOWN                =   -1  # Not in original API
+
+    @classmethod
+    def name(cls, value):
+        ''' Quick-and-dirty fallback for getting the "name" of an enum item '''
+
+        # value as string, if it matches an enum attribute.
+        # Allows short usage as Enum.name("VALUE") besides Enum.name(Enum.VALUE)
+        if hasattr(cls, str(value)):
+            return cls.name(getattr(cls, value, None))
+
+        # value not handled in subclass name()
+        for k, v in cls.__dict__.items():
+            if v == value:
+                return k.lower().replace('_', ' ')
+
+        # value not found
+        return cls.name(Enum.UNKNOWN)
+
+
+class CpuSched(Enum):
+    ''' values of ACTIVE_TASK::scheduler_state and ACTIVE_TASK::next_scheduler_state
+        "SCHEDULED" is synonymous with "executing" except when CPU throttling
+        is in use.
+    '''
+    UNINITIALIZED          =    0
+    PREEMPTED              =    1
+    SCHEDULED              =    2
+
+
+class ResultState(Enum):
+    ''' Values of RESULT::state in client.
+        THESE MUST BE IN NUMERICAL ORDER
+        (because of the > comparison in RESULT::computing_done())
+        see html/inc/common_defs.inc
+    '''
+    NEW                    =    0
+        #// New result
+    FILES_DOWNLOADING      =    1
+        #// Input files for result (WU, app version) are being downloaded
+    FILES_DOWNLOADED       =    2
+        #// Files are downloaded, result can be (or is being) computed
+    COMPUTE_ERROR          =    3
+        #// computation failed; no file upload
+    FILES_UPLOADING        =    4
+        #// Output files for result are being uploaded
+    FILES_UPLOADED         =    5
+        #// Files are uploaded, notify scheduling server at some point
+    ABORTED                =    6
+        #// result was aborted
+    UPLOAD_FAILED          =    7
+        #// some output file permanent failure
+
+
+class Process(Enum):
+    ''' values of ACTIVE_TASK::task_state '''
+    UNINITIALIZED          =    0
+        #// process doesn't exist yet
+    EXECUTING              =    1
+        #// process is running, as far as we know
+    SUSPENDED              =    9
+        #// we've sent it a "suspend" message
+    ABORT_PENDING          =    5
+        #// process exceeded limits; send "abort" message, waiting to exit
+    QUIT_PENDING           =    8
+        #// we've sent it a "quit" message, waiting to exit
+    COPY_PENDING           =   10
+        #// waiting for async file copies to finish
+
+
+class _Struct(object):
+    ''' base helper class with common methods for all classes derived from
+        BOINC's C++ structs
+    '''
+    @classmethod
+    def parse(cls, xml):
+        return setattrs_from_xml(cls(), xml)
+
+    def __str__(self, indent=0):
+        buf = '{0}{1}:\n'.format('\t' * indent, self.__class__.__name__)
+        for attr in self.__dict__:
+            value = getattr(self, attr)
+            if isinstance(value, list):
+                buf += '{0}\t{1} [\n'.format('\t' * indent, attr)
+                for v in value: buf += '\t\t{0}\t\t,\n'.format(v)
+                buf += '\t]\n'
+            else:
+                buf += '{0}\t{1}\t{2}\n'.format('\t' * indent,
+                                         attr,
+                                         value.__str__(indent+2)
+                                            if isinstance(value, _Struct)
+                                            else repr(value))
+        return buf
+
+
+@total_ordering
+class VersionInfo(_Struct):
+    def __init__(self, major=0, minor=0, release=0):
+        self.major     = major
+        self.minor     = minor
+        self.release   = release
+
+    @property
+    def _tuple(self):
+        return  (self.major, self.minor, self.release)
+
+    def __eq__(self, other):
+        return isinstance(other, self.__class__) and self._tuple == other._tuple
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+    def __gt__(self, other):
+        if not isinstance(other, self.__class__):
+            return NotImplemented
+        return self._tuple > other._tuple
+
+    def __str__(self):
+        return "{0}.{1}.{2}".format(self.major, self.minor, self.release)
+
+    def __repr__(self):
+        return "{0}{1}".format(self.__class__.__name__, self._tuple)
+
+
+class Result(_Struct):
+    ''' Also called "task" in some contexts '''
+    def __init__(self):
+        # Names and values follow lib/gui_rpc_client.h @ RESULT
+        # Order too, except when grouping contradicts client/result.cpp
+        # RESULT::write_gui(), then XML order is used.
+
+        self.name                         = ""
+        self.wu_name                      = ""
+        self.version_num                  = 0
+            #// identifies the app used
+        self.plan_class                   = ""
+        self.project_url                  = ""  # from PROJECT.master_url
+        self.report_deadline              = 0.0 # seconds since epoch
+        self.received_time                = 0.0 # seconds since epoch
+            #// when we got this from server
+        self.ready_to_report              = False
+            #// we're ready to report this result to the server;
+            #// either computation is done and all the files have been uploaded
+            #// or there was an error
+        self.got_server_ack               = False
+            #// we've received the ack for this result from the server
+        self.final_cpu_time               = 0.0
+        self.final_elapsed_time           = 0.0
+        self.state                        = ResultState.NEW
+        self.estimated_cpu_time_remaining = 0.0
+            #// actually, estimated elapsed time remaining
+        self.exit_status                  = 0
+            #// return value from the application
+        self.suspended_via_gui            = False
+        self.project_suspended_via_gui    = False
+        self.edf_scheduled                = False
+            #// temporary used to tell GUI that this result is deadline-scheduled
+        self.coproc_missing               = False
+            #// a coproc needed by this job is missing
+            #// (e.g. because user removed their GPU board).
+        self.scheduler_wait               = False
+        self.scheduler_wait_reason        = ""
+        self.network_wait                 = False
+        self.resources                    = ""
+            #// textual description of resources used
+
+        #// the following defined if active
+        # XML is generated in client/app.cpp ACTIVE_TASK::write_gui()
+        self.active_task                  = False
+        self.active_task_state            = Process.UNINITIALIZED
+        self.app_version_num              = 0
+        self.slot                         = -1
+        self.pid                          = 0
+        self.scheduler_state              = CpuSched.UNINITIALIZED
+        self.checkpoint_cpu_time          = 0.0
+        self.current_cpu_time             = 0.0
+        self.fraction_done                = 0.0
+        self.elapsed_time                 = 0.0
+        self.swap_size                    = 0
+        self.working_set_size_smoothed    = 0.0
+        self.too_large                    = False
+        self.needs_shmem                  = False
+        self.graphics_exec_path           = ""
+        self.web_graphics_url             = ""
+        self.remote_desktop_addr          = ""
+        self.slot_path                    = ""
+            #// only present if graphics_exec_path is
+
+        # The following are not in original API, but are present in RPC XML reply
+        self.completed_time               = 0.0
+            #// time when ready_to_report was set
+        self.report_immediately           = False
+        self.working_set_size             = 0
+        self.page_fault_rate              = 0.0
+            #// derived by higher-level code
+
+        # The following are in API, but are NEVER in RPC XML reply. Go figure
+        self.signal                       = 0
+
+        self.app                          = None  # APP*
+        self.wup                          = None  # WORKUNIT*
+        self.project                      = None  # PROJECT*
+        self.avp                          = None  # APP_VERSION*
+
+    @classmethod
+    def parse(cls, xml):
+        if not isinstance(xml, ElementTree.Element):
+            xml = ElementTree.fromstring(xml)
+
+        # parse main XML
+        result = super(Result, cls).parse(xml)
+
+        # parse '<active_task>' children
+        active_task = xml.find('active_task')
+        if active_task is None:
+            result.active_task = False  # already the default after __init__()
+        else:
+            result.active_task = True   # already the default after main parse
+            result = setattrs_from_xml(result, active_task)
+
+        #// if CPU time is nonzero but elapsed time is zero,
+        #// we must be talking to an old client.
+        #// Set elapsed = CPU
+        #// (easier to deal with this here than in the manager)
+        if result.current_cpu_time != 0 and result.elapsed_time == 0:
+            result.elapsed_time = result.current_cpu_time
+
+        if result.final_cpu_time != 0 and result.final_elapsed_time == 0:
+            result.final_elapsed_time = result.final_cpu_time
+
+        return result
+
+    def __str__(self):
+        buf = '{0}:\n'.format(self.__class__.__name__)
+        for attr in self.__dict__:
+            value = getattr(self, attr)
+            if attr in ['received_time', 'report_deadline']:
+                value = time.ctime(value)
+            buf += '\t{0}\t{1}\n'.format(attr, value)
+        return buf
+
+
+class BoincClient(object):
+
+    def __init__(self, host="", port=0, passwd=None):
+        self.hostname   = host
+        self.port       = port
+        self.passwd     = passwd
+        self.rpc        = Rpc(text_output=False)
+        self.version    = None
+        self.authorized = False
+
+        # Informative, not authoritative. Records status of *last* RPC call,
+        # but does not infer success about the *next* one.
+        # Thus, it should be read *after* an RPC call, not prior to one
+        self.connected = False
+
+    def __enter__(self): self.connect(); return self
+    def __exit__(self, *args): self.disconnect()
+
+    def connect(self):
+        try:
+            self.rpc.connect(self.hostname, self.port)
+            self.connected = True
+        except socket.error:
+            self.connected = False
+            return
+        self.authorized = self.authorize(self.passwd)
+        self.version = self.exchange_versions()
+
+    def disconnect(self):
+        self.rpc.disconnect()
+
+    def authorize(self, password):
+        ''' Request authorization. If password is None and we are connecting
+            to localhost, try to read password from the local config file
+            GUI_RPC_PASSWD_FILE. If file can't be read (not found or no
+            permission to read), try to authorize with a blank password.
+            If authorization is requested and fails, all subsequent calls
+            will be refused with socket.error 'Connection reset by peer' (104).
+            Since most local calls do no require authorization, do not attempt
+            it if you're not sure about the password.
+        '''
+        if password is None and not self.hostname:
+            password = read_gui_rpc_password() or ""
+        nonce = self.rpc.call('<auth1/>').text
+        authhash = hashlib.md5('{0}{1}'.format(nonce, password).encode()).hexdigest().lower()
+        reply = self.rpc.call('<auth2><nonce_hash>{0}</nonce_hash></auth2>'.format(authhash))
+
+        if reply.tag == 'authorized':
+            return True
+        else:
+            return False
+
+    def exchange_versions(self):
+        ''' Return VersionInfo instance with core client version info '''
+        return VersionInfo.parse(self.rpc.call('<exchange_versions/>'))
+
+    def get_tasks(self):
+        ''' Same as get_results(active_only=False) '''
+        return self.get_results(False)
+
+    def get_results(self, active_only=False):
+        ''' Get a list of results.
+            Those that are in progress will have information such as CPU time
+            and fraction done. Each result includes a name;
+            Use CC_STATE::lookup_result() to find this result in the current static state;
+            if it's not there, call get_state() again.
+        '''
+        reply = self.rpc.call("<get_results><active_only>{0}</active_only></get_results>".format(1 if active_only else 0))
+        if not reply.tag == 'results':
+            return []
+
+        results = []
+        for item in list(reply):
+            results.append(Result.parse(item))
+
+        return results
+
+
+def read_gui_rpc_password():
+    ''' Read password string from GUI_RPC_PASSWD_FILE file, trim the last CR
+        (if any), and return it
+    '''
+    try:
+        with open(GUI_RPC_PASSWD_FILE, 'r') as f:
+            buf = f.read()
+            if buf.endswith('\n'): return buf[:-1]  # trim last CR
+            else: return buf
+    except IOError:
+        # Permission denied or File not found.
+        pass
diff --git a/python.d/python_modules/third_party/lm_sensors.py b/collectors/python.d.plugin/python_modules/third_party/lm_sensors.py
index 1d868f0e2..f10cd6209 100644
--- a/python.d/python_modules/third_party/lm_sensors.py
+++ b/collectors/python.d.plugin/python_modules/third_party/lm_sensors.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: LGPL-2.1
 """
 @package sensors.py
 Python Bindings for libsensors3
@@ -254,4 +255,4 @@ class SubFeatureIterator:
         return subfeature
 
     def next(self):  # python2 compability
-        return self.__next__()
\ No newline at end of file
+        return self.__next__()
diff --git a/collectors/python.d.plugin/python_modules/third_party/mcrcon.py b/collectors/python.d.plugin/python_modules/third_party/mcrcon.py
new file mode 100644
index 000000000..a65a304b6
--- /dev/null
+++ b/collectors/python.d.plugin/python_modules/third_party/mcrcon.py
@@ -0,0 +1,74 @@
+# Minecraft Remote Console module.
+#
+# Copyright (C) 2015 Barnaby Gale
+#
+# SPDX-License-Identifier: MIT
+
+import socket
+import select
+import struct
+import time
+
+
+class MCRconException(Exception):
+    pass
+
+
+class MCRcon(object):
+    socket = None
+
+    def connect(self, host, port, password):
+        if self.socket is not None:
+            raise MCRconException("Already connected")
+        self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.socket.settimeout(0.9)
+        self.socket.connect((host, port))
+        self.send(3, password)
+
+    def disconnect(self):
+        if self.socket is None:
+            raise MCRconException("Already disconnected")
+        self.socket.close()
+        self.socket = None
+
+    def read(self, length):
+        data = b""
+        while len(data) < length:
+            data += self.socket.recv(length - len(data))
+        return data
+
+    def send(self, out_type, out_data):
+        if self.socket is None:
+            raise MCRconException("Must connect before sending data")
+
+        # Send a request packet
+        out_payload = struct.pack('<ii', 0, out_type) + out_data.encode('utf8') + b'\x00\x00'
+        out_length = struct.pack('<i', len(out_payload))
+        self.socket.send(out_length + out_payload)
+
+        # Read response packets
+        in_data = ""
+        while True:
+            # Read a packet
+            in_length, = struct.unpack('<i', self.read(4))
+            in_payload = self.read(in_length)
+            in_id = struct.unpack('<ii', in_payload[:8])
+            in_data_partial, in_padding = in_payload[8:-2], in_payload[-2:]
+
+            # Sanity checks
+            if in_padding != b'\x00\x00':
+                raise MCRconException("Incorrect padding")
+            if in_id == -1:
+                raise MCRconException("Login failed")
+
+            # Record the response
+            in_data += in_data_partial.decode('utf8')
+
+            # If there's nothing more to receive, return the response
+            if len(select.select([self.socket], [], [], 0)[0]) == 0:
+                return in_data
+
+    def command(self, command):
+        result = self.send(2, command)
+        time.sleep(0.003) # MC-72390 workaround
+        return result
diff --git a/collectors/python.d.plugin/python_modules/third_party/monotonic.py b/collectors/python.d.plugin/python_modules/third_party/monotonic.py
new file mode 100644
index 000000000..da04bb857
--- /dev/null
+++ b/collectors/python.d.plugin/python_modules/third_party/monotonic.py
@@ -0,0 +1,171 @@
+# -*- coding: utf-8 -*-
+#
+# SPDX-License-Identifier: Apache-2.0
+"""
+  monotonic
+  ~~~~~~~~~
+
+  This module provides a ``monotonic()`` function which returns the
+  value (in fractional seconds) of a clock which never goes backwards.
+
+  On Python 3.3 or newer, ``monotonic`` will be an alias of
+  ``time.monotonic`` from the standard library. On older versions,
+  it will fall back to an equivalent implementation:
+
+  +-------------+----------------------------------------+
+  | Linux, BSD  | ``clock_gettime(3)``                   |
+  +-------------+----------------------------------------+
+  | Windows     | ``GetTickCount`` or ``GetTickCount64`` |
+  +-------------+----------------------------------------+
+  | OS X        | ``mach_absolute_time``                 |
+  +-------------+----------------------------------------+
+
+  If no suitable implementation exists for the current platform,
+  attempting to import this module (or to import from it) will
+  cause a ``RuntimeError`` exception to be raised.
+
+
+  Copyright 2014, 2015, 2016 Ori Livneh <ori@wikimedia.org>
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+"""
+import time
+
+
+__all__ = ('monotonic',)
+
+
+try:
+    monotonic = time.monotonic
+except AttributeError:
+    import ctypes
+    import ctypes.util
+    import os
+    import sys
+    import threading
+    try:
+        if sys.platform == 'darwin':  # OS X, iOS
+            # See Technical Q&A QA1398 of the Mac Developer Library:
+            #  <https://developer.apple.com/library/mac/qa/qa1398/>
+            libc = ctypes.CDLL('/usr/lib/libc.dylib', use_errno=True)
+
+            class mach_timebase_info_data_t(ctypes.Structure):
+                """System timebase info. Defined in <mach/mach_time.h>."""
+                _fields_ = (('numer', ctypes.c_uint32),
+                            ('denom', ctypes.c_uint32))
+
+            mach_absolute_time = libc.mach_absolute_time
+            mach_absolute_time.restype = ctypes.c_uint64
+
+            timebase = mach_timebase_info_data_t()
+            libc.mach_timebase_info(ctypes.byref(timebase))
+            ticks_per_second = timebase.numer / timebase.denom * 1.0e9
+
+            def monotonic():
+                """Monotonic clock, cannot go backward."""
+                return mach_absolute_time() / ticks_per_second
+
+        elif sys.platform.startswith('win32') or sys.platform.startswith('cygwin'):
+            if sys.platform.startswith('cygwin'):
+                # Note: cygwin implements clock_gettime (CLOCK_MONOTONIC = 4) since
+                # version 1.7.6. Using raw WinAPI for maximum version compatibility.
+
+                # Ugly hack using the wrong calling convention (in 32-bit mode)
+                # because ctypes has no windll under cygwin (and it also seems that
+                # the code letting you select stdcall in _ctypes doesn't exist under
+                # the preprocessor definitions relevant to cygwin).
+                # This is 'safe' because:
+                # 1. The ABI of GetTickCount and GetTickCount64 is identical for
+                #    both calling conventions because they both have no parameters.
+                # 2. libffi masks the problem because after making the call it doesn't
+                #    touch anything through esp and epilogue code restores a correct
+                #    esp from ebp afterwards.
+                try:
+                    kernel32 = ctypes.cdll.kernel32
+                except OSError:  # 'No such file or directory'
+                    kernel32 = ctypes.cdll.LoadLibrary('kernel32.dll')
+            else:
+                kernel32 = ctypes.windll.kernel32
+
+            GetTickCount64 = getattr(kernel32, 'GetTickCount64', None)
+            if GetTickCount64:
+                # Windows Vista / Windows Server 2008 or newer.
+                GetTickCount64.restype = ctypes.c_ulonglong
+
+                def monotonic():
+                    """Monotonic clock, cannot go backward."""
+                    return GetTickCount64() / 1000.0
+
+            else:
+                # Before Windows Vista.
+                GetTickCount = kernel32.GetTickCount
+                GetTickCount.restype = ctypes.c_uint32
+
+                get_tick_count_lock = threading.Lock()
+                get_tick_count_last_sample = 0
+                get_tick_count_wraparounds = 0
+
+                def monotonic():
+                    """Monotonic clock, cannot go backward."""
+                    global get_tick_count_last_sample
+                    global get_tick_count_wraparounds
+
+                    with get_tick_count_lock:
+                        current_sample = GetTickCount()
+                        if current_sample < get_tick_count_last_sample:
+                            get_tick_count_wraparounds += 1
+                        get_tick_count_last_sample = current_sample
+
+                        final_milliseconds = get_tick_count_wraparounds << 32
+                        final_milliseconds += get_tick_count_last_sample
+                        return final_milliseconds / 1000.0
+
+        else:
+            try:
+                clock_gettime = ctypes.CDLL(ctypes.util.find_library('c'),
+                                            use_errno=True).clock_gettime
+            except Exception:
+                clock_gettime = ctypes.CDLL(ctypes.util.find_library('rt'),
+                                            use_errno=True).clock_gettime
+
+            class timespec(ctypes.Structure):
+                """Time specification, as described in clock_gettime(3)."""
+                _fields_ = (('tv_sec', ctypes.c_long),
+                            ('tv_nsec', ctypes.c_long))
+
+            if sys.platform.startswith('linux'):
+                CLOCK_MONOTONIC = 1
+            elif sys.platform.startswith('freebsd'):
+                CLOCK_MONOTONIC = 4
+            elif sys.platform.startswith('sunos5'):
+                CLOCK_MONOTONIC = 4
+            elif 'bsd' in sys.platform:
+                CLOCK_MONOTONIC = 3
+            elif sys.platform.startswith('aix'):
+                CLOCK_MONOTONIC = ctypes.c_longlong(10)
+
+            def monotonic():
+                """Monotonic clock, cannot go backward."""
+                ts = timespec()
+                if clock_gettime(CLOCK_MONOTONIC, ctypes.pointer(ts)):
+                    errno = ctypes.get_errno()
+                    raise OSError(errno, os.strerror(errno))
+                return ts.tv_sec + ts.tv_nsec / 1.0e9
+
+        # Perform a sanity-check.
+        if monotonic() - monotonic() > 0:
+            raise ValueError('monotonic() is not monotonic!')
+
+    except Exception as e:
+        raise RuntimeError('no suitable implementation for this system: ' + repr(e))
diff --git a/python.d/python_modules/third_party/ordereddict.py b/collectors/python.d.plugin/python_modules/third_party/ordereddict.py
index d0b97d47c..589401b8f 100644
--- a/python.d/python_modules/third_party/ordereddict.py
+++ b/collectors/python.d.plugin/python_modules/third_party/ordereddict.py
@@ -1,24 +1,6 @@
 # Copyright (c) 2009 Raymond Hettinger
 #
-# Permission is hereby granted, free of charge, to any person
-# obtaining a copy of this software and associated documentation files
-# (the "Software"), to deal in the Software without restriction,
-# including without limitation the rights to use, copy, modify, merge,
-# publish, distribute, sublicense, and/or sell copies of the Software,
-# and to permit persons to whom the Software is furnished to do so,
-# subject to the following conditions:
-#
-#     The above copyright notice and this permission notice shall be
-#     included in all copies or substantial portions of the Software.
-#
-#     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-#     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-#     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-#     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-#     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-#     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-#     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-#     OTHER DEALINGS IN THE SOFTWARE.
+# SPDX-License-Identifier: MIT
 
 from UserDict import DictMixin
 
diff --git a/python.d/python_modules/urllib3/__init__.py b/collectors/python.d.plugin/python_modules/urllib3/__init__.py
index 26493ecb9..3add84816 100644
--- a/python.d/python_modules/urllib3/__init__.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/__init__.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 """
 urllib3 - Thread-safe connection pooling and re-using.
 """
diff --git a/python.d/python_modules/urllib3/_collections.py b/collectors/python.d.plugin/python_modules/urllib3/_collections.py
index 4849ddecd..c1d2fad36 100644
--- a/python.d/python_modules/urllib3/_collections.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/_collections.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 from collections import Mapping, MutableMapping
 try:
diff --git a/python.d/python_modules/urllib3/connection.py b/collectors/python.d.plugin/python_modules/urllib3/connection.py
index c0d832998..f757493c7 100644
--- a/python.d/python_modules/urllib3/connection.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/connection.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 import datetime
 import logging
diff --git a/python.d/python_modules/urllib3/connectionpool.py b/collectors/python.d.plugin/python_modules/urllib3/connectionpool.py
index b4f1166a6..90e4c86a5 100644
--- a/python.d/python_modules/urllib3/connectionpool.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/connectionpool.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 import errno
 import logging
diff --git a/src/.keep b/collectors/python.d.plugin/python_modules/urllib3/contrib/__init__.py
index e69de29bb..e69de29bb 100644
--- a/src/.keep
+++ b/collectors/python.d.plugin/python_modules/urllib3/contrib/__init__.py
diff --git a/collectors/python.d.plugin/python_modules/urllib3/contrib/_securetransport/__init__.py b/collectors/python.d.plugin/python_modules/urllib3/contrib/_securetransport/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/collectors/python.d.plugin/python_modules/urllib3/contrib/_securetransport/__init__.py
diff --git a/python.d/python_modules/urllib3/contrib/_securetransport/bindings.py b/collectors/python.d.plugin/python_modules/urllib3/contrib/_securetransport/bindings.py
index e26b84086..bb826673f 100644
--- a/python.d/python_modules/urllib3/contrib/_securetransport/bindings.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/contrib/_securetransport/bindings.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 """
 This module uses ctypes to bind a whole bunch of functions and constants from
 SecureTransport. The goal here is to provide the low-level API to
diff --git a/python.d/python_modules/urllib3/contrib/_securetransport/low_level.py b/collectors/python.d.plugin/python_modules/urllib3/contrib/_securetransport/low_level.py
index 5e3494bce..0f79a1372 100644
--- a/python.d/python_modules/urllib3/contrib/_securetransport/low_level.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/contrib/_securetransport/low_level.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 """
 Low-level helpers for the SecureTransport bindings.
 
diff --git a/python.d/python_modules/urllib3/contrib/appengine.py b/collectors/python.d.plugin/python_modules/urllib3/contrib/appengine.py
index 814b0222d..e74589fa8 100644
--- a/python.d/python_modules/urllib3/contrib/appengine.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/contrib/appengine.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 """
 This module provides a pool manager that uses Google App Engine's
 `URLFetch Service <https://cloud.google.com/appengine/docs/python/urlfetch>`_.
diff --git a/python.d/python_modules/urllib3/contrib/ntlmpool.py b/collectors/python.d.plugin/python_modules/urllib3/contrib/ntlmpool.py
index 642e99ed2..3f8c9ebf5 100644
--- a/python.d/python_modules/urllib3/contrib/ntlmpool.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/contrib/ntlmpool.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 """
 NTLM authenticating pool, contributed by erikcederstran
 
diff --git a/python.d/python_modules/urllib3/contrib/pyopenssl.py b/collectors/python.d.plugin/python_modules/urllib3/contrib/pyopenssl.py
index 6645dbaa9..8d373507d 100644
--- a/python.d/python_modules/urllib3/contrib/pyopenssl.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/contrib/pyopenssl.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 """
 SSL with SNI_-support for Python 2. Follow these instructions if you would
 like to verify SSL certificates in Python 2. Note, the default libraries do
diff --git a/python.d/python_modules/urllib3/contrib/securetransport.py b/collectors/python.d.plugin/python_modules/urllib3/contrib/securetransport.py
index 72b23ab1c..fcc30118c 100644
--- a/python.d/python_modules/urllib3/contrib/securetransport.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/contrib/securetransport.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 """
 SecureTranport support for urllib3 via ctypes.
 
diff --git a/python.d/python_modules/urllib3/contrib/socks.py b/collectors/python.d.plugin/python_modules/urllib3/contrib/socks.py
index 39e92fde1..1cb79285b 100644
--- a/python.d/python_modules/urllib3/contrib/socks.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/contrib/socks.py
@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+# SPDX-License-Identifier: MIT
 """
 This module contains provisional support for SOCKS proxies from within
 urllib3. This module supports SOCKS4 (specifically the SOCKS4A variant) and
diff --git a/python.d/python_modules/urllib3/exceptions.py b/collectors/python.d.plugin/python_modules/urllib3/exceptions.py
index 6c4be5810..a71cabe06 100644
--- a/python.d/python_modules/urllib3/exceptions.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/exceptions.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 from .packages.six.moves.http_client import (
     IncompleteRead as httplib_IncompleteRead
diff --git a/python.d/python_modules/urllib3/fields.py b/collectors/python.d.plugin/python_modules/urllib3/fields.py
index 19b0ae0c8..de7577b74 100644
--- a/python.d/python_modules/urllib3/fields.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/fields.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 import email.utils
 import mimetypes
diff --git a/python.d/python_modules/urllib3/filepost.py b/collectors/python.d.plugin/python_modules/urllib3/filepost.py
index cd11cee46..3febc9cfe 100644
--- a/python.d/python_modules/urllib3/filepost.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/filepost.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 import codecs
 
diff --git a/python.d/python_modules/urllib3/packages/__init__.py b/collectors/python.d.plugin/python_modules/urllib3/packages/__init__.py
index 170e974c1..170e974c1 100644
--- a/python.d/python_modules/urllib3/packages/__init__.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/packages/__init__.py
diff --git a/collectors/python.d.plugin/python_modules/urllib3/packages/backports/__init__.py b/collectors/python.d.plugin/python_modules/urllib3/packages/backports/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/collectors/python.d.plugin/python_modules/urllib3/packages/backports/__init__.py
diff --git a/python.d/python_modules/urllib3/packages/backports/makefile.py b/collectors/python.d.plugin/python_modules/urllib3/packages/backports/makefile.py
index 75b80dcf8..8ab122f8b 100644
--- a/python.d/python_modules/urllib3/packages/backports/makefile.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/packages/backports/makefile.py
@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+# SPDX-License-Identifier: MIT
 """
 backports.makefile
 ~~~~~~~~~~~~~~~~~~
diff --git a/python.d/python_modules/urllib3/packages/ordered_dict.py b/collectors/python.d.plugin/python_modules/urllib3/packages/ordered_dict.py
index 4479363cc..9f7c0e6b8 100644
--- a/python.d/python_modules/urllib3/packages/ordered_dict.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/packages/ordered_dict.py
@@ -2,6 +2,7 @@
 # Passes Python2.7's test suite and incorporates all the latest updates.
 # Copyright 2009 Raymond Hettinger, released under the MIT License.
 # http://code.activestate.com/recipes/576693/
+# SPDX-License-Identifier: MIT
 try:
     from thread import get_ident as _get_ident
 except ImportError:
diff --git a/python.d/python_modules/urllib3/packages/six.py b/collectors/python.d.plugin/python_modules/urllib3/packages/six.py
index 190c0239c..31df5012b 100644
--- a/python.d/python_modules/urllib3/packages/six.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/packages/six.py
@@ -2,23 +2,7 @@
 
 # Copyright (c) 2010-2015 Benjamin Peterson
 #
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in all
-# copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
+# SPDX-License-Identifier: MIT
 
 from __future__ import absolute_import
 
diff --git a/python.d/python_modules/urllib3/packages/ssl_match_hostname/__init__.py b/collectors/python.d.plugin/python_modules/urllib3/packages/ssl_match_hostname/__init__.py
index d6594eb26..2aeeeff91 100644
--- a/python.d/python_modules/urllib3/packages/ssl_match_hostname/__init__.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/packages/ssl_match_hostname/__init__.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 import sys
 
 try:
diff --git a/python.d/python_modules/urllib3/packages/ssl_match_hostname/_implementation.py b/collectors/python.d.plugin/python_modules/urllib3/packages/ssl_match_hostname/_implementation.py
index 1fd42f38a..647e081da 100644
--- a/python.d/python_modules/urllib3/packages/ssl_match_hostname/_implementation.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/packages/ssl_match_hostname/_implementation.py
@@ -1,7 +1,6 @@
 """The match_hostname() function from Python 3.3.3, essential when using SSL."""
 
-# Note: This file is under the PSF license as the code comes from the python
-# stdlib.   http://docs.python.org/3/license.html
+# SPDX-License-Identifier: Python-2.0
 
 import re
 import sys
diff --git a/python.d/python_modules/urllib3/poolmanager.py b/collectors/python.d.plugin/python_modules/urllib3/poolmanager.py
index 4ae91744d..adea9bc01 100644
--- a/python.d/python_modules/urllib3/poolmanager.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/poolmanager.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 import collections
 import functools
diff --git a/python.d/python_modules/urllib3/request.py b/collectors/python.d.plugin/python_modules/urllib3/request.py
index c0fddff04..f78331975 100644
--- a/python.d/python_modules/urllib3/request.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/request.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 
 from .filepost import encode_multipart_formdata
diff --git a/python.d/python_modules/urllib3/response.py b/collectors/python.d.plugin/python_modules/urllib3/response.py
index 408d9996a..cf14a3076 100644
--- a/python.d/python_modules/urllib3/response.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/response.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 from contextlib import contextmanager
 import zlib
diff --git a/python.d/python_modules/urllib3/util/__init__.py b/collectors/python.d.plugin/python_modules/urllib3/util/__init__.py
index 2f2770b62..bba628d98 100644
--- a/python.d/python_modules/urllib3/util/__init__.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/util/__init__.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 # For backwards compatibility, provide imports that used to be here.
 from .connection import is_connection_dropped
diff --git a/python.d/python_modules/urllib3/util/connection.py b/collectors/python.d.plugin/python_modules/urllib3/util/connection.py
index bf699cfd0..3bd69e8fa 100644
--- a/python.d/python_modules/urllib3/util/connection.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/util/connection.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 import socket
 from .wait import wait_for_read
diff --git a/python.d/python_modules/urllib3/util/request.py b/collectors/python.d.plugin/python_modules/urllib3/util/request.py
index 3ddfcd559..18f27b032 100644
--- a/python.d/python_modules/urllib3/util/request.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/util/request.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 from base64 import b64encode
 
diff --git a/python.d/python_modules/urllib3/util/response.py b/collectors/python.d.plugin/python_modules/urllib3/util/response.py
index 67cf730ab..e4cda93d4 100644
--- a/python.d/python_modules/urllib3/util/response.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/util/response.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 from ..packages.six.moves import http_client as httplib
 
diff --git a/python.d/python_modules/urllib3/util/retry.py b/collectors/python.d.plugin/python_modules/urllib3/util/retry.py
index c603cb490..61e63afec 100644
--- a/python.d/python_modules/urllib3/util/retry.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/util/retry.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 import time
 import logging
diff --git a/python.d/python_modules/urllib3/util/selectors.py b/collectors/python.d.plugin/python_modules/urllib3/util/selectors.py
index d75cb266b..c0997b1a2 100644
--- a/python.d/python_modules/urllib3/util/selectors.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/util/selectors.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 # Backport of selectors.py from Python 3.5+ to support Python < 3.4
 # Also has the behavior specified in PEP 475 which is to retry syscalls
 # in the case of an EINTR error. This module is required because selectors34
diff --git a/python.d/python_modules/urllib3/util/ssl_.py b/collectors/python.d.plugin/python_modules/urllib3/util/ssl_.py
index 33d428ed8..ece3ec39e 100644
--- a/python.d/python_modules/urllib3/util/ssl_.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/util/ssl_.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 import errno
 import warnings
diff --git a/python.d/python_modules/urllib3/util/timeout.py b/collectors/python.d.plugin/python_modules/urllib3/util/timeout.py
index cec817e6e..4041cf9b9 100644
--- a/python.d/python_modules/urllib3/util/timeout.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/util/timeout.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 # The default socket timeout, used by httplib to indicate that no timeout was
 # specified by the user
diff --git a/python.d/python_modules/urllib3/util/url.py b/collectors/python.d.plugin/python_modules/urllib3/util/url.py
index 6b6f9968d..99fd6534a 100644
--- a/python.d/python_modules/urllib3/util/url.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/util/url.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from __future__ import absolute_import
 from collections import namedtuple
 
diff --git a/python.d/python_modules/urllib3/util/wait.py b/collectors/python.d.plugin/python_modules/urllib3/util/wait.py
index cb396e508..21e72979c 100644
--- a/python.d/python_modules/urllib3/util/wait.py
+++ b/collectors/python.d.plugin/python_modules/urllib3/util/wait.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 from .selectors import (
     HAS_SELECT,
     DefaultSelector,
diff --git a/collectors/python.d.plugin/rabbitmq/Makefile.inc b/collectors/python.d.plugin/rabbitmq/Makefile.inc
new file mode 100644
index 000000000..7e67ef512
--- /dev/null
+++ b/collectors/python.d.plugin/rabbitmq/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += rabbitmq/rabbitmq.chart.py
+dist_pythonconfig_DATA += rabbitmq/rabbitmq.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += rabbitmq/README.md rabbitmq/Makefile.inc
+
diff --git a/collectors/python.d.plugin/rabbitmq/README.md b/collectors/python.d.plugin/rabbitmq/README.md
new file mode 100644
index 000000000..22d367c4d
--- /dev/null
+++ b/collectors/python.d.plugin/rabbitmq/README.md
@@ -0,0 +1,56 @@
+# rabbitmq
+
+Module monitor rabbitmq performance and health metrics.
+
+Following charts are drawn:
+
+1. **Queued Messages**
+ * ready
+ * unacknowledged
+
+2. **Message Rates**
+ * ack
+ * redelivered
+ * deliver
+ * publish
+
+3. **Global Counts**
+ * channels
+ * consumers
+ * connections
+ * queues
+ * exchanges
+
+4. **File Descriptors**
+ * used descriptors
+
+5. **Socket Descriptors**
+ * used descriptors
+
+6. **Erlang processes**
+ * used processes
+
+7. **Erlang run queue**
+ * Erlang run queue
+
+8. **Memory**
+ * free memory in megabytes
+
+9. **Disk Space**
+ * free disk space in gigabytes
+
+### configuration
+
+```yaml
+socket:
+  name     : 'local'
+  host     : '127.0.0.1'
+  port     :  15672
+  user     : 'guest'
+  pass     : 'guest'
+
+```
+
+When no configuration file is found, module tries to connect to: `localhost:15672`.
+
+---
diff --git a/python.d/rabbitmq.chart.py b/collectors/python.d.plugin/rabbitmq/rabbitmq.chart.py
index b8847e9f8..8298b4032 100644
--- a/python.d/rabbitmq.chart.py
+++ b/collectors/python.d.plugin/rabbitmq/rabbitmq.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: rabbitmq netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from collections import namedtuple
 from json import loads
@@ -20,91 +21,104 @@ retries = 60
 
 METHODS = namedtuple('METHODS', ['get_data', 'url', 'stats'])
 
-NODE_STATS = ['fd_used',
-              'mem_used',
-              'sockets_used',
-              'proc_used',
-              'disk_free',
-              'run_queue'
-              ]
-OVERVIEW_STATS = ['object_totals.channels',
-                  'object_totals.consumers',
-                  'object_totals.connections',
-                  'object_totals.queues',
-                  'object_totals.exchanges',
-                  'queue_totals.messages_ready',
-                  'queue_totals.messages_unacknowledged',
-                  'message_stats.ack',
-                  'message_stats.redeliver',
-                  'message_stats.deliver',
-                  'message_stats.publish'
-                  ]
-ORDER = ['queued_messages', 'message_rates', 'global_counts',
-         'file_descriptors', 'socket_descriptors', 'erlang_processes', 'erlang_run_queue', 'memory', 'disk_space']
+NODE_STATS = [
+    'fd_used',
+    'mem_used',
+    'sockets_used',
+    'proc_used',
+    'disk_free',
+    'run_queue'
+]
+
+OVERVIEW_STATS = [
+    'object_totals.channels',
+    'object_totals.consumers',
+    'object_totals.connections',
+    'object_totals.queues',
+    'object_totals.exchanges',
+    'queue_totals.messages_ready',
+    'queue_totals.messages_unacknowledged',
+    'message_stats.ack',
+    'message_stats.redeliver',
+    'message_stats.deliver',
+    'message_stats.publish'
+]
+
+ORDER = [
+    'queued_messages',
+    'message_rates',
+    'global_counts',
+    'file_descriptors',
+    'socket_descriptors',
+    'erlang_processes',
+    'erlang_run_queue',
+    'memory',
+    'disk_space'
+]
 
 CHARTS = {
     'file_descriptors': {
-        'options': [None, 'File Descriptors', 'descriptors', 'overview',
-                    'rabbitmq.file_descriptors', 'line'],
+        'options': [None, 'File Descriptors', 'descriptors', 'overview', 'rabbitmq.file_descriptors', 'line'],
         'lines': [
             ['fd_used', 'used', 'absolute']
-        ]},
+        ]
+    },
     'memory': {
-        'options': [None, 'Memory', 'MB', 'overview',
-                    'rabbitmq.memory', 'line'],
+        'options': [None, 'Memory', 'MB', 'overview', 'rabbitmq.memory', 'line'],
         'lines': [
             ['mem_used', 'used', 'absolute', 1, 1024 << 10]
-        ]},
+        ]
+    },
     'disk_space': {
-        'options': [None, 'Disk Space', 'GB', 'overview',
-                    'rabbitmq.disk_space', 'line'],
+        'options': [None, 'Disk Space', 'GB', 'overview', 'rabbitmq.disk_space', 'line'],
         'lines': [
             ['disk_free', 'free', 'absolute', 1, 1024 ** 3]
-        ]},
+        ]
+    },
     'socket_descriptors': {
-        'options': [None, 'Socket Descriptors', 'descriptors', 'overview',
-                    'rabbitmq.sockets', 'line'],
+        'options': [None, 'Socket Descriptors', 'descriptors', 'overview', 'rabbitmq.sockets', 'line'],
         'lines': [
             ['sockets_used', 'used', 'absolute']
-        ]},
+        ]
+    },
     'erlang_processes': {
-        'options': [None, 'Erlang Processes', 'processes', 'overview',
-                    'rabbitmq.processes', 'line'],
+        'options': [None, 'Erlang Processes', 'processes', 'overview', 'rabbitmq.processes', 'line'],
         'lines': [
             ['proc_used', 'used', 'absolute']
-        ]},
+        ]
+    },
     'erlang_run_queue': {
-        'options': [None, 'Erlang Run Queue', 'processes', 'overview',
-                    'rabbitmq.erlang_run_queue', 'line'],
+        'options': [None, 'Erlang Run Queue', 'processes', 'overview', 'rabbitmq.erlang_run_queue', 'line'],
         'lines': [
-            ['run_queue',' length', 'absolute']
-        ]},
+            ['run_queue', 'length', 'absolute']
+        ]
+    },
     'global_counts': {
-        'options': [None, 'Global Counts', 'counts', 'overview',
-                    'rabbitmq.global_counts', 'line'],
+        'options': [None, 'Global Counts', 'counts', 'overview', 'rabbitmq.global_counts', 'line'],
         'lines': [
             ['object_totals_channels', 'channels', 'absolute'],
             ['object_totals_consumers', 'consumers', 'absolute'],
             ['object_totals_connections', 'connections', 'absolute'],
             ['object_totals_queues', 'queues', 'absolute'],
             ['object_totals_exchanges', 'exchanges', 'absolute']
-        ]},
+        ]
+    },
     'queued_messages': {
-        'options': [None, 'Queued Messages', 'messages', 'overview',
-                    'rabbitmq.queued_messages', 'stacked'],
+        'options': [None, 'Queued Messages', 'messages', 'overview', 'rabbitmq.queued_messages', 'stacked'],
         'lines': [
             ['queue_totals_messages_ready', 'ready', 'absolute'],
             ['queue_totals_messages_unacknowledged', 'unacknowledged', 'absolute']
-        ]},
+        ]
+    },
     'message_rates': {
-        'options': [None, 'Message Rates', 'messages/s', 'overview',
-                    'rabbitmq.message_rates', 'stacked'],
+        'options': [None, 'Message Rates', 'messages/s', 'overview', 'rabbitmq.message_rates', 'stacked'],
         'lines': [
             ['message_stats_ack', 'ack', 'incremental'],
             ['message_stats_redeliver', 'redeliver', 'incremental'],
             ['message_stats_deliver', 'deliver', 'incremental'],
             ['message_stats_publish', 'publish', 'incremental']
-        ]}
+        ]
+    }
 }
 
 
diff --git a/conf.d/python.d/rabbitmq.conf b/collectors/python.d.plugin/rabbitmq/rabbitmq.conf
index 3f90da8a2..3f90da8a2 100644
--- a/conf.d/python.d/rabbitmq.conf
+++ b/collectors/python.d.plugin/rabbitmq/rabbitmq.conf
diff --git a/collectors/python.d.plugin/redis/Makefile.inc b/collectors/python.d.plugin/redis/Makefile.inc
new file mode 100644
index 000000000..6aab08977
--- /dev/null
+++ b/collectors/python.d.plugin/redis/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += redis/redis.chart.py
+dist_pythonconfig_DATA += redis/redis.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += redis/README.md redis/Makefile.inc
+
diff --git a/collectors/python.d.plugin/redis/README.md b/collectors/python.d.plugin/redis/README.md
new file mode 100644
index 000000000..8d21df0ca
--- /dev/null
+++ b/collectors/python.d.plugin/redis/README.md
@@ -0,0 +1,42 @@
+# redis
+
+Get INFO data from redis instance.
+
+Following charts are drawn:
+
+1. **Operations** per second
+ * operations
+
+2. **Hit rate** in percent
+ * rate
+
+3. **Memory utilization** in kilobytes
+ * total
+ * lua
+
+4. **Database keys**
+ * lines are creates dynamically based on how many databases are there
+
+5. **Clients**
+ * connected
+ * blocked
+
+6. **Slaves**
+ * connected
+
+### configuration
+
+```yaml
+socket:
+  name     : 'local'
+  socket   : '/var/lib/redis/redis.sock'
+
+localhost:
+  name     : 'local'
+  host     : 'localhost'
+  port     : 6379
+```
+
+When no configuration file is found, module tries to connect to TCP/IP socket: `localhost:6379`.
+
+---
diff --git a/collectors/python.d.plugin/redis/redis.chart.py b/collectors/python.d.plugin/redis/redis.chart.py
new file mode 100644
index 000000000..37d55ebfe
--- /dev/null
+++ b/collectors/python.d.plugin/redis/redis.chart.py
@@ -0,0 +1,261 @@
+# -*- coding: utf-8 -*-
+# Description: redis netdata python.d module
+# Author: Pawel Krupa (paulfantom)
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import re
+
+from copy import deepcopy
+
+from bases.FrameworkServices.SocketService import SocketService
+
+REDIS_ORDER = [
+    'operations',
+    'hit_rate',
+    'memory',
+    'keys_redis',
+    'eviction',
+    'net',
+    'connections',
+    'clients',
+    'slaves',
+    'persistence',
+    'bgsave_now',
+    'bgsave_health',
+    'uptime',
+]
+
+PIKA_ORDER = [
+    'operations',
+    'hit_rate',
+    'memory',
+    'keys_pika',
+    'connections',
+    'clients',
+    'slaves',
+    'uptime',
+]
+
+
+CHARTS = {
+    'operations': {
+        'options': [None, 'Operations', 'operations/s', 'operations', 'redis.operations', 'line'],
+        'lines': [
+            ['total_commands_processed', 'commands', 'incremental'],
+            ['instantaneous_ops_per_sec', 'operations', 'absolute']
+        ]
+    },
+    'hit_rate': {
+        'options': [None, 'Hit rate', 'percent', 'hits', 'redis.hit_rate', 'line'],
+        'lines': [
+            ['hit_rate', 'rate', 'absolute']
+        ]
+    },
+    'memory': {
+        'options': [None, 'Memory utilization', 'kilobytes', 'memory', 'redis.memory', 'line'],
+        'lines': [
+            ['used_memory', 'total', 'absolute', 1, 1024],
+            ['used_memory_lua', 'lua', 'absolute', 1, 1024]
+        ]
+    },
+    'net': {
+        'options': [None, 'Bandwidth', 'kilobits/s', 'network', 'redis.net', 'area'],
+        'lines': [
+            ['total_net_input_bytes', 'in', 'incremental', 8, 1024],
+            ['total_net_output_bytes', 'out', 'incremental', -8, 1024]
+        ]
+    },
+    'keys_redis': {
+        'options': [None, 'Keys per Database', 'keys', 'keys', 'redis.keys', 'line'],
+        'lines': []
+    },
+    'keys_pika': {
+        'options': [None, 'Keys', 'keys', 'keys', 'redis.keys', 'line'],
+        'lines': [
+            ['kv_keys', 'kv', 'absolute'],
+            ['hash_keys', 'hash', 'absolute'],
+            ['list_keys', 'list', 'absolute'],
+            ['zset_keys', 'zset', 'absolute'],
+            ['set_keys', 'set', 'absolute']
+        ]
+    },
+    'eviction': {
+        'options': [None, 'Evicted Keys', 'keys', 'keys', 'redis.eviction', 'line'],
+        'lines': [
+            ['evicted_keys', 'evicted', 'absolute']
+        ]
+    },
+    'connections': {
+        'options': [None, 'Connections', 'connections/s', 'connections', 'redis.connections', 'line'],
+        'lines': [
+            ['total_connections_received', 'received', 'incremental', 1],
+            ['rejected_connections', 'rejected', 'incremental', -1]
+        ]
+    },
+    'clients': {
+        'options': [None, 'Clients', 'clients', 'connections', 'redis.clients', 'line'],
+        'lines': [
+            ['connected_clients', 'connected', 'absolute', 1],
+            ['blocked_clients', 'blocked', 'absolute', -1]
+        ]
+    },
+    'slaves': {
+        'options': [None, 'Slaves', 'slaves', 'replication', 'redis.slaves', 'line'],
+        'lines': [
+            ['connected_slaves', 'connected', 'absolute']
+        ]
+    },
+    'persistence': {
+        'options': [None, 'Persistence Changes Since Last Save', 'changes', 'persistence',
+                    'redis.rdb_changes', 'line'],
+        'lines': [
+            ['rdb_changes_since_last_save', 'changes', 'absolute']
+        ]
+    },
+    'bgsave_now': {
+        'options': [None, 'Duration of the RDB Save Operation', 'seconds', 'persistence',
+                    'redis.bgsave_now', 'absolute'],
+        'lines': [
+            ['rdb_bgsave_in_progress', 'rdb save', 'absolute']
+        ]
+    },
+    'bgsave_health': {
+        'options': [None, 'Status of the Last RDB Save Operation', 'status', 'persistence',
+                    'redis.bgsave_health', 'line'],
+        'lines': [
+            ['rdb_last_bgsave_status', 'rdb save', 'absolute']
+        ]
+    },
+    'uptime': {
+        'options': [None, 'Uptime', 'seconds', 'uptime', 'redis.uptime', 'line'],
+        'lines': [
+            ['uptime_in_seconds', 'uptime', 'absolute']
+        ]
+    }
+}
+
+
+def copy_chart(name):
+    return {name: deepcopy(CHARTS[name])}
+
+
+RE = re.compile(r'\n([a-z_0-9 ]+):(?:keys=)?([^,\r]+)')
+
+
+class Service(SocketService):
+    def __init__(self, configuration=None, name=None):
+        SocketService.__init__(self, configuration=configuration, name=name)
+        self._keep_alive = True
+
+        self.order = list()
+        self.definitions = dict()
+
+        self.host = self.configuration.get('host', 'localhost')
+        self.port = self.configuration.get('port', 6379)
+        self.unix_socket = self.configuration.get('socket')
+        p = self.configuration.get('pass')
+
+        self.auth_request = 'AUTH {0} \r\n'.format(p).encode() if p else None
+        self.request = 'INFO\r\n'.encode()
+        self.bgsave_time = 0
+
+    def do_auth(self):
+        resp = self._get_raw_data(request=self.auth_request)
+        if not resp:
+            return False
+        if resp.strip() != '+OK':
+            self.error('invalid password')
+            return False
+        return True
+
+    def get_raw_and_parse(self):
+        if self.auth_request and not self.do_auth():
+            return None
+
+        resp = self._get_raw_data()
+
+        if not resp:
+            return None
+
+        parsed = RE.findall(resp)
+
+        if not parsed:
+            self.error('response is invalid/empty')
+            return None
+
+        return dict((k.replace(' ', '_'), v) for k, v in parsed)
+
+    def get_data(self):
+        """
+        Get data from socket
+        :return: dict
+        """
+        data = self.get_raw_and_parse()
+
+        if not data:
+            return None
+
+        try:
+            data['hit_rate'] = (
+                    (int(data['keyspace_hits']) * 100) / (int(data['keyspace_hits']) + int(data['keyspace_misses']))
+            )
+        except (KeyError, ZeroDivisionError):
+            data['hit_rate'] = 0
+
+        if data.get('redis_version') and data.get('rdb_bgsave_in_progress'):
+            self.get_data_redis_specific(data)
+
+        return data
+
+    def get_data_redis_specific(self, data):
+        if data['rdb_bgsave_in_progress'] != '0':
+            self.bgsave_time += self.update_every
+        else:
+            self.bgsave_time = 0
+
+        data['rdb_last_bgsave_status'] = 0 if data['rdb_last_bgsave_status'] == 'ok' else 1
+        data['rdb_bgsave_in_progress'] = self.bgsave_time
+
+    def check(self):
+        """
+        Parse configuration, check if redis is available, and dynamically create chart lines data
+        :return: boolean
+        """
+        data = self.get_raw_and_parse()
+
+        if not data:
+            return False
+
+        self.order = PIKA_ORDER if data.get('pika_version') else REDIS_ORDER
+
+        for n in self.order:
+            self.definitions.update(copy_chart(n))
+
+        if data.get('redis_version'):
+            for k in data:
+                if k.startswith('db'):
+                    self.definitions['keys_redis']['lines'].append([k, None, 'absolute'])
+
+        return True
+
+    def _check_raw_data(self, data):
+        """
+        Check if all data has been gathered from socket.
+        Parse first line containing message length and check against received message
+        :param data: str
+        :return: boolean
+        """
+        length = len(data)
+        supposed = data.split('\n')[0][1:-1]
+        offset = len(supposed) + 4  # 1 dollar sing, 1 new line character + 1 ending sequence '\r\n'
+        if not supposed.isdigit():
+            return True
+        supposed = int(supposed)
+
+        if length - offset >= supposed:
+            self.debug('received full response from redis')
+            return True
+
+        self.debug('waiting more data from redis')
+        return False
diff --git a/conf.d/python.d/redis.conf b/collectors/python.d.plugin/redis/redis.conf
index 6363f6da7..6363f6da7 100644
--- a/conf.d/python.d/redis.conf
+++ b/collectors/python.d.plugin/redis/redis.conf
diff --git a/collectors/python.d.plugin/rethinkdbs/Makefile.inc b/collectors/python.d.plugin/rethinkdbs/Makefile.inc
new file mode 100644
index 000000000..dec604464
--- /dev/null
+++ b/collectors/python.d.plugin/rethinkdbs/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += rethinkdbs/rethinkdbs.chart.py
+dist_pythonconfig_DATA += rethinkdbs/rethinkdbs.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += rethinkdbs/README.md rethinkdbs/Makefile.inc
+
diff --git a/collectors/python.d.plugin/rethinkdbs/README.md b/collectors/python.d.plugin/rethinkdbs/README.md
new file mode 100644
index 000000000..5d357fa49
--- /dev/null
+++ b/collectors/python.d.plugin/rethinkdbs/README.md
@@ -0,0 +1,34 @@
+# rethinkdbs
+
+Module monitor rethinkdb health metrics.
+
+Following charts are drawn:
+
+1. **Connected Servers**
+ * connected
+ * missing
+
+2. **Active Clients**
+ * active
+
+3. **Queries** per second
+ * queries
+
+4. **Documents** per second
+ * documents
+
+### configuration
+
+```yaml
+
+localhost:
+  name     : 'local'
+  host     : '127.0.0.1'
+  port     : 28015
+  user     : "user"
+  password : "pass"
+```
+
+When no configuration file is found, module tries to connect to `127.0.0.1:28015`.
+
+---
diff --git a/collectors/python.d.plugin/rethinkdbs/rethinkdbs.chart.py b/collectors/python.d.plugin/rethinkdbs/rethinkdbs.chart.py
new file mode 100644
index 000000000..127e9ad4b
--- /dev/null
+++ b/collectors/python.d.plugin/rethinkdbs/rethinkdbs.chart.py
@@ -0,0 +1,235 @@
+# -*- coding: utf-8 -*-
+# Description: rethinkdb netdata python.d module
+# Author: Ilya Mashchenko (l2isbad)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+try:
+    import rethinkdb as rdb
+    HAS_RETHINKDB = True
+except ImportError:
+    HAS_RETHINKDB = False
+
+from bases.FrameworkServices.SimpleService import SimpleService
+
+ORDER = [
+    'cluster_connected_servers',
+    'cluster_clients_active',
+    'cluster_queries',
+    'cluster_documents',
+]
+
+
+def cluster_charts():
+    return {
+        'cluster_connected_servers': {
+            'options': [None, 'Connected Servers', 'servers', 'cluster', 'rethinkdb.cluster_connected_servers',
+                        'stacked'],
+            'lines': [
+                ['cluster_servers_connected', 'connected'],
+                ['cluster_servers_missing', 'missing'],
+            ]
+        },
+        'cluster_clients_active': {
+            'options': [None, 'Active Clients', 'clients', 'cluster', 'rethinkdb.cluster_clients_active',
+                        'line'],
+            'lines': [
+                ['cluster_clients_active', 'active'],
+            ]
+        },
+        'cluster_queries': {
+            'options': [None, 'Queries', 'queries/s', 'cluster', 'rethinkdb.cluster_queries', 'line'],
+            'lines': [
+                ['cluster_queries_per_sec', 'queries'],
+            ]
+        },
+        'cluster_documents': {
+            'options': [None, 'Documents', 'documents/s', 'cluster', 'rethinkdb.cluster_documents', 'line'],
+            'lines': [
+                ['cluster_read_docs_per_sec', 'reads'],
+                ['cluster_written_docs_per_sec', 'writes'],
+            ]
+        },
+    }
+
+
+def server_charts(n):
+    o = [
+        '{0}_client_connections'.format(n),
+        '{0}_clients_active'.format(n),
+        '{0}_queries'.format(n),
+        '{0}_documents'.format(n),
+    ]
+    f = 'server {0}'.format(n)
+
+    c = {
+        o[0]: {
+            'options': [None, 'Client Connections', 'connections', f, 'rethinkdb.client_connections', 'line'],
+            'lines': [
+                ['{0}_client_connections'.format(n), 'connections'],
+            ]
+        },
+        o[1]: {
+            'options': [None, 'Active Clients', 'clients', f, 'rethinkdb.clients_active', 'line'],
+            'lines': [
+                ['{0}_clients_active'.format(n), 'active'],
+            ]
+        },
+        o[2]: {
+            'options': [None, 'Queries', 'queries/s', f, 'rethinkdb.queries', 'line'],
+            'lines': [
+                ['{0}_queries_total'.format(n), 'queries', 'incremental'],
+            ]
+        },
+        o[3]: {
+            'options': [None, 'Documents', 'documents/s', f, 'rethinkdb.documents', 'line'],
+            'lines': [
+                ['{0}_read_docs_total'.format(n), 'reads', 'incremental'],
+                ['{0}_written_docs_total'.format(n), 'writes', 'incremental'],
+            ]
+        },
+    }
+
+    return o, c
+
+
+class Cluster:
+    def __init__(self, raw):
+        self.raw = raw
+
+    def data(self):
+        qe = self.raw['query_engine']
+
+        return {
+            'cluster_clients_active': qe['clients_active'],
+            'cluster_queries_per_sec': qe['queries_per_sec'],
+            'cluster_read_docs_per_sec': qe['read_docs_per_sec'],
+            'cluster_written_docs_per_sec': qe['written_docs_per_sec'],
+            'cluster_servers_connected': 0,
+            'cluster_servers_missing': 0,
+        }
+
+
+class Server:
+    def __init__(self, raw):
+        self.name = raw['server']
+        self.raw = raw
+
+    def error(self):
+        return self.raw.get('error')
+
+    def data(self):
+        qe = self.raw['query_engine']
+
+        d = {
+            'client_connections': qe['client_connections'],
+            'clients_active': qe['clients_active'],
+            'queries_total': qe['queries_total'],
+            'read_docs_total': qe['read_docs_total'],
+            'written_docs_total': qe['written_docs_total'],
+        }
+
+        return dict(('{0}_{1}'.format(self.name, k), d[k]) for k in d)
+
+
+class Service(SimpleService):
+    def __init__(self, configuration=None, name=None):
+        SimpleService.__init__(self, configuration=configuration, name=name)
+        self.order = list(ORDER)
+        self.definitions = cluster_charts()
+
+        self.host = self.configuration.get('host', '127.0.0.1')
+        self.port = self.configuration.get('port', 28015)
+        self.user = self.configuration.get('user', 'admin')
+        self.password = self.configuration.get('password')
+        self.timeout = self.configuration.get('timeout', 2)
+
+        self.conn = None
+        self.alive = True
+
+    def check(self):
+        if not HAS_RETHINKDB:
+            self.error('"rethinkdb" module is needed to use rethinkdbs.py')
+            return False
+
+        if not self.connect():
+            return None
+
+        stats = self.get_stats()
+
+        if not stats:
+            return None
+
+        for v in stats[1:]:
+            if get_id(v) == 'server':
+                o, c = server_charts(v['server'])
+                self.order.extend(o)
+                self.definitions.update(c)
+
+        return True
+
+    def get_data(self):
+        if not self.is_alive():
+            return None
+
+        stats = self.get_stats()
+
+        if not stats:
+            return None
+
+        data = dict()
+
+        # cluster
+        data.update(Cluster(stats[0]).data())
+
+        # servers
+        for v in stats[1:]:
+            if get_id(v) != 'server':
+                continue
+
+            s = Server(v)
+
+            if s.error():
+                data['cluster_servers_missing'] += 1
+            else:
+                data['cluster_servers_connected'] += 1
+                data.update(s.data())
+
+        return data
+
+    def get_stats(self):
+        try:
+            return list(rdb.db('rethinkdb').table('stats').run(self.conn).items)
+        except rdb.errors.ReqlError:
+            self.alive = False
+            return None
+
+    def connect(self):
+        try:
+            self.conn = rdb.connect(
+                host=self.host,
+                port=self.port,
+                user=self.user,
+                password=self.password,
+                timeout=self.timeout,
+            )
+            self.alive = True
+            return True
+        except rdb.errors.ReqlError as error:
+            self.error('Connection to {0}:{1} failed: {2}'.format(self.host, self.port, error))
+            return False
+
+    def reconnect(self):
+        # The connection is already closed after rdb.errors.ReqlError,
+        #  so we do not need to call conn.close()
+        if self.connect():
+            return True
+        return False
+
+    def is_alive(self):
+        if not self.alive:
+            return self.reconnect()
+        return True
+
+
+def get_id(v):
+    return v['id'][0]
diff --git a/collectors/python.d.plugin/rethinkdbs/rethinkdbs.conf b/collectors/python.d.plugin/rethinkdbs/rethinkdbs.conf
new file mode 100644
index 000000000..73544fc2e
--- /dev/null
+++ b/collectors/python.d.plugin/rethinkdbs/rethinkdbs.conf
@@ -0,0 +1,78 @@
+# netdata python.d.plugin configuration for rethinkdb
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# Additionally to the above, rethinkdb also supports the following:
+#
+#     host:     IP or HOSTNAME  # default is 'localhost'
+#     port:     PORT            # default is 28015
+#     user:     USERNAME        # default is 'admin'
+#     password: PASSWORD        # not set by default
+#     timeout:  TIMEOUT         # default is 2
+
+# ----------------------------------------------------------------------
+# AUTO-DETECTION JOBS
+# only one of them will run (they have the same name)
+
+local:
+  name: 'local'
+  host: 'localhost'
diff --git a/collectors/python.d.plugin/retroshare/Makefile.inc b/collectors/python.d.plugin/retroshare/Makefile.inc
new file mode 100644
index 000000000..891193e6d
--- /dev/null
+++ b/collectors/python.d.plugin/retroshare/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += retroshare/retroshare.chart.py
+dist_pythonconfig_DATA += retroshare/retroshare.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += retroshare/README.md retroshare/Makefile.inc
+
diff --git a/collectors/python.d.plugin/retroshare/README.md b/collectors/python.d.plugin/retroshare/README.md
new file mode 100644
index 000000000..e95095c65
--- /dev/null
+++ b/collectors/python.d.plugin/retroshare/README.md
@@ -0,0 +1 @@
+# retroshare
diff --git a/python.d/retroshare.chart.py b/collectors/python.d.plugin/retroshare/retroshare.chart.py
index 8c0330ec6..1d8e35050 100644
--- a/python.d/retroshare.chart.py
+++ b/collectors/python.d.plugin/retroshare/retroshare.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: RetroShare netdata python.d module
 # Authors: sehraf
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import json
 
@@ -20,19 +21,22 @@ CHARTS = {
         'lines': [
             ['bandwidth_up_kb',   'Upload'],
             ['bandwidth_down_kb', 'Download']
-        ]},
+        ]
+    },
     'peers': {
         'options': [None, 'RetroShare Peers', 'peers', 'RetroShare', 'retroshare.peers', 'line'],
         'lines': [
             ['peers_all',       'All friends'],
             ['peers_connected', 'Connected friends']
-        ]},
+        ]
+    },
     'dht': {
         'options': [None, 'Retroshare DHT', 'peers', 'RetroShare', 'retroshare.dht', 'line'],
         'lines': [
             ['dht_size_all', 'DHT nodes estimated'],
             ['dht_size_rs',  'RS nodes estimated']
-        ]}
+        ]
+    }
 }
 
 
diff --git a/conf.d/python.d/retroshare.conf b/collectors/python.d.plugin/retroshare/retroshare.conf
index 9c92583f7..9c92583f7 100644
--- a/conf.d/python.d/retroshare.conf
+++ b/collectors/python.d.plugin/retroshare/retroshare.conf
diff --git a/collectors/python.d.plugin/samba/Makefile.inc b/collectors/python.d.plugin/samba/Makefile.inc
new file mode 100644
index 000000000..230a8ba43
--- /dev/null
+++ b/collectors/python.d.plugin/samba/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += samba/samba.chart.py
+dist_pythonconfig_DATA += samba/samba.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += samba/README.md samba/Makefile.inc
+
diff --git a/collectors/python.d.plugin/samba/README.md b/collectors/python.d.plugin/samba/README.md
new file mode 100644
index 000000000..44610d373
--- /dev/null
+++ b/collectors/python.d.plugin/samba/README.md
@@ -0,0 +1,67 @@
+# samba
+
+Performance metrics of Samba file sharing.
+
+**Requirements:**
+* `smbstatus` program
+* `sudo` program
+* `smbd` must be compiled with profiling enabled
+* `smbd` must be started either with the `-P 1` option or inside `smb.conf` using `smbd profiling level`
+* `netdata` user needs to be able to sudo the `smbstatus` program without password
+
+It produces the following charts:
+
+1. **Syscall R/Ws** in kilobytes/s
+ * sendfile
+ * recvfle
+
+2. **Smb2 R/Ws** in kilobytes/s
+ * readout
+ * writein
+ * readin
+ * writeout
+
+3. **Smb2 Create/Close** in operations/s
+ * create
+ * close
+
+4. **Smb2 Info** in operations/s
+ * getinfo
+ * setinfo
+
+5. **Smb2 Find** in operations/s
+ * find
+
+6. **Smb2 Notify** in operations/s
+ * notify
+
+7. **Smb2 Lesser Ops** as counters
+ * tcon
+ * negprot
+ * tdis
+ * cancel
+ * logoff
+ * flush
+ * lock
+ * keepalive
+ * break
+ * sessetup
+
+### prerequisite
+This module uses `smbstatus` which can only be executed by root.  It uses
+`sudo` and assumes that it is configured such that the `netdata` user can
+execute `smbstatus` as root without password.
+
+Add to `sudoers`:
+
+    netdata ALL=(root)       NOPASSWD: /path/to/smbstatus
+
+### configuration
+
+ **samba** is disabled by default. Should be explicitly enabled in `python.d.conf`.
+
+```yaml
+samba: yes
+```
+
+---
diff --git a/collectors/python.d.plugin/samba/samba.chart.py b/collectors/python.d.plugin/samba/samba.chart.py
new file mode 100644
index 000000000..b2278de9e
--- /dev/null
+++ b/collectors/python.d.plugin/samba/samba.chart.py
@@ -0,0 +1,138 @@
+# -*- coding: utf-8 -*-
+# Description:  samba netdata python.d module
+# Author: Christopher Cox <chris_cox@endlessnow.com>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# The netdata user needs to be able to be able to sudo the smbstatus program
+# without password:
+# netdata ALL=(ALL)       NOPASSWD: /usr/bin/smbstatus -P
+#
+# This makes calls to smbstatus -P
+#
+# This just looks at a couple of values out of syscall, and some from smb2.
+#
+# The Lesser Ops chart is merely a display of current counter values.  They
+# didn't seem to change much to me.  However, if you notice something changing
+# a lot there, bring one or more out into its own chart and make it incremental
+# (like find and notify... good examples).
+
+import re
+
+from bases.collection import find_binary
+from bases.FrameworkServices.ExecutableService import ExecutableService
+
+
+disabled_by_default = True
+
+# default module values (can be overridden per job in `config`)
+update_every = 5
+priority = 60000
+retries = 60
+
+ORDER = [
+    'syscall_rw',
+    'smb2_rw',
+    'smb2_create_close',
+    'smb2_info',
+    'smb2_find',
+    'smb2_notify',
+    'smb2_sm_count'
+]
+
+CHARTS = {
+    'syscall_rw': {
+        'options': [None, 'R/Ws', 'kilobytes/s', 'syscall', 'syscall.rw', 'area'],
+        'lines': [
+            ['syscall_sendfile_bytes', 'sendfile', 'incremental', 1, 1024],
+            ['syscall_recvfile_bytes', 'recvfile', 'incremental', -1, 1024]
+        ]
+    },
+    'smb2_rw': {
+        'options': [None, 'R/Ws', 'kilobytes/s', 'smb2', 'smb2.rw', 'area'],
+        'lines': [
+            ['smb2_read_outbytes', 'readout', 'incremental', 1, 1024],
+            ['smb2_write_inbytes', 'writein', 'incremental', -1, 1024],
+            ['smb2_read_inbytes', 'readin', 'incremental', 1, 1024],
+            ['smb2_write_outbytes', 'writeout', 'incremental', -1, 1024]
+        ]
+    },
+    'smb2_create_close': {
+        'options': [None, 'Create/Close', 'operations/s', 'smb2', 'smb2.create_close', 'line'],
+        'lines': [
+            ['smb2_create_count', 'create', 'incremental', 1, 1],
+            ['smb2_close_count', 'close', 'incremental', -1, 1]
+        ]
+    },
+    'smb2_info': {
+        'options': [None, 'Info', 'operations/s', 'smb2', 'smb2.get_set_info', 'line'],
+        'lines': [
+            ['smb2_getinfo_count', 'getinfo', 'incremental', 1, 1],
+            ['smb2_setinfo_count', 'setinfo', 'incremental', -1, 1]
+        ]
+    },
+    'smb2_find': {
+        'options': [None, 'Find', 'operations/s', 'smb2', 'smb2.find', 'line'],
+        'lines': [
+            ['smb2_find_count', 'find', 'incremental', 1, 1]
+        ]
+    },
+    'smb2_notify': {
+        'options': [None, 'Notify', 'operations/s', 'smb2', 'smb2.notify', 'line'],
+        'lines': [
+            ['smb2_notify_count', 'notify', 'incremental', 1, 1]
+        ]
+    },
+    'smb2_sm_count': {
+        'options': [None, 'Lesser Ops', 'count', 'smb2', 'smb2.sm_counters', 'stacked'],
+        'lines': [
+            ['smb2_tcon_count', 'tcon', 'absolute', 1, 1],
+            ['smb2_negprot_count', 'negprot', 'absolute', 1, 1],
+            ['smb2_tdis_count', 'tdis', 'absolute', 1, 1],
+            ['smb2_cancel_count', 'cancel', 'absolute', 1, 1],
+            ['smb2_logoff_count', 'logoff', 'absolute', 1, 1],
+            ['smb2_flush_count', 'flush', 'absolute', 1, 1],
+            ['smb2_lock_count', 'lock', 'absolute', 1, 1],
+            ['smb2_keepalive_count', 'keepalive', 'absolute', 1, 1],
+            ['smb2_break_count', 'break', 'absolute', 1, 1],
+            ['smb2_sessetup_count', 'sessetup', 'absolute', 1, 1]
+        ]
+    }
+}
+
+
+class Service(ExecutableService):
+    def __init__(self, configuration=None, name=None):
+        ExecutableService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+        self.rgx_smb2 = re.compile(r'(smb2_[^:]+|syscall_.*file_bytes):\s+(\d+)')
+
+    def check(self):
+        sudo_binary, smbstatus_binary = find_binary('sudo'), find_binary('smbstatus')
+
+        if not (sudo_binary and smbstatus_binary):
+            self.error("Can\'t locate 'sudo' or 'smbstatus' binary")
+            return False
+
+        self.command = [sudo_binary, '-v']
+        err = self._get_raw_data(stderr=True)
+        if err:
+            self.error(''.join(err))
+            return False
+
+        self.command = ' '.join([sudo_binary, '-n', smbstatus_binary, '-P'])
+
+        return ExecutableService.check(self)
+
+    def _get_data(self):
+        """
+        Format data received from shell command
+        :return: dict
+        """
+        raw_data = self._get_raw_data()
+        if not raw_data:
+            return None
+
+        parsed = self.rgx_smb2.findall(' '.join(raw_data))
+
+        return dict(parsed) or None
diff --git a/conf.d/python.d/samba.conf b/collectors/python.d.plugin/samba/samba.conf
index ee513c60f..ee513c60f 100644
--- a/conf.d/python.d/samba.conf
+++ b/collectors/python.d.plugin/samba/samba.conf
diff --git a/collectors/python.d.plugin/sensors/Makefile.inc b/collectors/python.d.plugin/sensors/Makefile.inc
new file mode 100644
index 000000000..5fb26e1c8
--- /dev/null
+++ b/collectors/python.d.plugin/sensors/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += sensors/sensors.chart.py
+dist_pythonconfig_DATA += sensors/sensors.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += sensors/README.md sensors/Makefile.inc
+
diff --git a/collectors/python.d.plugin/sensors/README.md b/collectors/python.d.plugin/sensors/README.md
new file mode 100644
index 000000000..eb1642d90
--- /dev/null
+++ b/collectors/python.d.plugin/sensors/README.md
@@ -0,0 +1,17 @@
+# sensors
+
+System sensors information.
+
+Charts are created dynamically.
+
+### configuration
+
+For detailed configuration information please read [`sensors.conf`](sensors.conf) file.
+
+### possible issues
+
+There have been reports from users that on certain servers, ACPI ring buffer errors are printed by the kernel (`dmesg`) when ACPI sensors are being accessed.
+We are tracking such cases in issue [#827](https://github.com/netdata/netdata/issues/827).
+Please join this discussion for help.
+
+---
diff --git a/python.d/sensors.chart.py b/collectors/python.d.plugin/sensors/sensors.chart.py
index 06e420b68..69d2bfe99 100644
--- a/python.d/sensors.chart.py
+++ b/collectors/python.d.plugin/sensors/sensors.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: sensors netdata python.d plugin
 # Author: Pawel Krupa (paulfantom)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.FrameworkServices.SimpleService import SimpleService
 from third_party import lm_sensors as sensors
@@ -16,37 +17,44 @@ CHARTS = {
         'options': [None, ' temperature', 'Celsius', 'temperature', 'sensors.temperature', 'line'],
         'lines': [
             [None, None, 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'voltage': {
         'options': [None, ' voltage', 'Volts', 'voltage', 'sensors.voltage', 'line'],
         'lines': [
             [None, None, 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'current': {
         'options': [None, ' current', 'Ampere', 'current', 'sensors.current', 'line'],
         'lines': [
             [None, None, 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'power': {
         'options': [None, ' power', 'Watt', 'power', 'sensors.power', 'line'],
         'lines': [
             [None, None, 'absolute', 1, 1000000]
-        ]},
+        ]
+    },
     'fan': {
         'options': [None, ' fans speed', 'Rotations/min', 'fans', 'sensors.fan', 'line'],
         'lines': [
             [None, None, 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'energy': {
         'options': [None, ' energy', 'Joule', 'energy', 'sensors.energy', 'areastack'],
         'lines': [
             [None, None, 'incremental', 1, 1000000]
-        ]},
+        ]
+    },
     'humidity': {
         'options': [None, ' humidity', 'Percent', 'humidity', 'sensors.humidity', 'line'],
         'lines': [
             [None, None, 'absolute', 1, 1000]
-        ]}
+        ]
+    }
 }
 
 LIMITS = {
@@ -94,7 +102,7 @@ class Service(SimpleService):
                         limit = LIMITS[type_name]
                         if val < limit[0] or val > limit[1]:
                             continue
-                        data[prefix + "_" + str(feature.name.decode())] = int(val * 1000)
+                        data[prefix + '_' + str(feature.name.decode())] = int(val * 1000)
         except Exception as error:
             self.error(error)
             return None
@@ -114,7 +122,7 @@ class Service(SimpleService):
                         continue
                     if TYPE_MAP[feature.type] == sensor:
                         # create chart
-                        name = chip_name + "_" + TYPE_MAP[feature.type]
+                        name = chip_name + '_' + TYPE_MAP[feature.type]
                         if name not in self.order:
                             self.order.append(name)
                             chart_def = list(CHARTS[sensor]['options'])
@@ -122,7 +130,7 @@ class Service(SimpleService):
                             self.definitions[name] = {'options': chart_def}
                             self.definitions[name]['lines'] = []
                         line = list(CHARTS[sensor]['lines'][0])
-                        line[0] = chip_name + "_" + str(feature.name.decode())
+                        line[0] = chip_name + '_' + str(feature.name.decode())
                         line[1] = sensors.get_label(chip, feature)
                         self.definitions[name]['lines'].append(line)
 
@@ -136,4 +144,3 @@ class Service(SimpleService):
         self.create_definitions()
 
         return True
-
diff --git a/conf.d/python.d/sensors.conf b/collectors/python.d.plugin/sensors/sensors.conf
index 83bbffd7d..83bbffd7d 100644
--- a/conf.d/python.d/sensors.conf
+++ b/collectors/python.d.plugin/sensors/sensors.conf
diff --git a/collectors/python.d.plugin/smartd_log/Makefile.inc b/collectors/python.d.plugin/smartd_log/Makefile.inc
new file mode 100644
index 000000000..dc1d0f3fb
--- /dev/null
+++ b/collectors/python.d.plugin/smartd_log/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += smartd_log/smartd_log.chart.py
+dist_pythonconfig_DATA += smartd_log/smartd_log.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += smartd_log/README.md smartd_log/Makefile.inc
+
diff --git a/collectors/python.d.plugin/smartd_log/README.md b/collectors/python.d.plugin/smartd_log/README.md
new file mode 100644
index 000000000..121a63573
--- /dev/null
+++ b/collectors/python.d.plugin/smartd_log/README.md
@@ -0,0 +1,38 @@
+# smartd_log
+
+Module monitor `smartd` log files to collect HDD/SSD S.M.A.R.T attributes.
+
+It produces following charts (you can add additional attributes in the module configuration file):
+
+1. **Read Error Rate** attribute 1
+
+2. **Start/Stop Count** attribute 4
+
+3. **Reallocated Sectors Count** attribute 5
+
+4. **Seek Error Rate** attribute 7
+
+5. **Power-On Hours Count** attribute 9
+
+6. **Power Cycle Count** attribute 12
+
+7. **Load/Unload Cycles** attribute 193
+
+8. **Temperature** attribute 194
+
+9. **Current Pending Sectors** attribute 197
+
+10. **Off-Line Uncorrectable** attribute 198
+
+11. **Write Error Rate** attribute 200
+
+### configuration
+
+```yaml
+local:
+  log_path : '/var/log/smartd/'
+```
+
+If no configuration is given, module will attempt to read log files in /var/log/smartd/ directory.
+
+---
diff --git a/python.d/smartd_log.chart.py b/collectors/python.d.plugin/smartd_log/smartd_log.chart.py
index 07ad88cd4..21dbccecc 100644
--- a/python.d/smartd_log.chart.py
+++ b/collectors/python.d.plugin/smartd_log/smartd_log.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: smart netdata python.d module
 # Author: l2isbad, vorph1
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import os
 import re
@@ -115,7 +116,7 @@ def chart_template(chart_name):
         chart_name: {
             'options': [None, title, units, family, 'smartd_log.' + chart_name, 'line'],
             'lines': []
-            }
+        }
     }
 
 
@@ -184,6 +185,12 @@ class Disk:
             return self.name == other.name
         return self.name == other
 
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(repr(self))
+
     @handle_os_error
     def is_active(self):
         return (time() - os.path.getmtime(self.log_file.path)) / 60 < self.age
diff --git a/conf.d/python.d/smartd_log.conf b/collectors/python.d.plugin/smartd_log/smartd_log.conf
index 3fab3f1c0..3fab3f1c0 100644
--- a/conf.d/python.d/smartd_log.conf
+++ b/collectors/python.d.plugin/smartd_log/smartd_log.conf
diff --git a/collectors/python.d.plugin/spigotmc/Makefile.inc b/collectors/python.d.plugin/spigotmc/Makefile.inc
new file mode 100644
index 000000000..f9fa8b6b0
--- /dev/null
+++ b/collectors/python.d.plugin/spigotmc/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += spigotmc/spigotmc.chart.py
+dist_pythonconfig_DATA += spigotmc/spigotmc.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += spigotmc/README.md spigotmc/Makefile.inc
+
diff --git a/collectors/python.d.plugin/spigotmc/README.md b/collectors/python.d.plugin/spigotmc/README.md
new file mode 100644
index 000000000..ae5602587
--- /dev/null
+++ b/collectors/python.d.plugin/spigotmc/README.md
@@ -0,0 +1,22 @@
+# spigotmc
+
+This module does some really basic monitoring for Spigot Minecraft servers.
+
+It provides two charts, one tracking server-side ticks-per-second in
+1, 5 and 15 minute averages, and one tracking the number of currently
+active users.
+
+This is not compatible with Spigot plugins which change the format of
+the data returned by the `tps` or `list` console commands.
+
+### configuration
+
+```yaml
+host: localhost
+port: 25575
+password: pass
+```
+
+By default, a connection to port 25575 on the local system is attempted with an empty password.
+
+---
diff --git a/collectors/python.d.plugin/spigotmc/spigotmc.chart.py b/collectors/python.d.plugin/spigotmc/spigotmc.chart.py
new file mode 100644
index 000000000..a5e5ee0ee
--- /dev/null
+++ b/collectors/python.d.plugin/spigotmc/spigotmc.chart.py
@@ -0,0 +1,120 @@
+# -*- coding: utf-8 -*-
+# Description: spigotmc netdata python.d module
+# Author: Austin S. Hemmelgarn (Ferroin)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import socket
+import platform
+
+from bases.FrameworkServices.SimpleService import SimpleService
+
+from third_party import mcrcon
+
+# Update only every 5 seconds because collection takes in excess of
+# 100ms sometimes, and mos tpeople won't care about second-by-second data.
+update_every = 5
+
+PRECISION = 100
+
+ORDER = ['tps', 'users']
+
+CHARTS = {
+    'tps': {
+        'options': [None, 'Spigot Ticks Per Second', 'ticks', 'spigotmc', 'spigotmc.tps', 'line'],
+        'lines': [
+            ['tps1', '1 Minute Average', 'absolute', 1, PRECISION],
+            ['tps5', '5 Minute Average', 'absolute', 1, PRECISION],
+            ['tps15', '15 Minute Average', 'absolute', 1, PRECISION]
+        ]
+    },
+    'users': {
+        'options': [None, 'Minecraft Users', 'users', 'spigotmc', 'spigotmc.users', 'area'],
+        'lines': [
+            ['users', 'Users', 'absolute', 1, 1]
+        ]
+    }
+}
+
+
+class Service(SimpleService):
+    def __init__(self, configuration=None, name=None):
+        SimpleService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+        self.host = self.configuration.get('host', 'localhost')
+        self.port = self.configuration.get('port', 25575)
+        self.password = self.configuration.get('password', '')
+        self.console = mcrcon.MCRcon()
+        self.alive = True
+
+    def check(self):
+        if platform.system() != 'Linux':
+            self.error('Only supported on Linux.')
+            return False
+        try:
+            self.connect()
+        except (mcrcon.MCRconException, socket.error) as err:
+            self.error('Error connecting.')
+            self.error(repr(err))
+            return False
+        return True
+
+    def connect(self):
+        self.console.connect(self.host, self.port, self.password)
+
+    def reconnect(self):
+        try:
+            try:
+                self.console.disconnect()
+            except mcrcon.MCRconException:
+                pass
+            self.console.connect(self.host, self.port, self.password)
+            self.alive = True
+        except (mcrcon.MCRconException, socket.error) as err:
+            self.error('Error connecting.')
+            self.error(repr(err))
+            return False
+        return True
+
+    def is_alive(self):
+        if (not self.alive) or \
+           self.console.socket.getsockopt(socket.IPPROTO_TCP, socket.TCP_INFO, 0) != 1:
+            return self.reconnect()
+        return True
+
+    def _get_data(self):
+        if not self.is_alive():
+            return None
+        data = {}
+        try:
+            raw = self.console.command('tps')
+            # The above command returns a string that looks like this:
+            # '§6TPS from last 1m, 5m, 15m: §a19.99, §a19.99, §a19.99\n'
+            # The values we care about are the three numbers after the :
+            tmp = raw.split(':')[1].split(',')
+            data['tps1'] = float(tmp[0].lstrip(u' §a*')) * PRECISION
+            data['tps5'] = float(tmp[1].lstrip(u' §a*')) * PRECISION
+            data['tps15'] = float(tmp[2].lstrip(u' §a*').rstrip()) * PRECISION
+        except mcrcon.MCRconException:
+            self.error('Unable to fetch TPS values.')
+        except socket.error:
+            self.error('Connection is dead.')
+            self.alive = False
+            return None
+        except (TypeError, LookupError):
+            self.error('Unable to process TPS values.')
+        try:
+            raw = self.console.command('list')
+            # The above command returns a string that looks like this:
+            # 'There are 0/20 players online:'
+            # We care about the first number here.
+            data['users'] = int(raw.split()[2].split('/')[0])
+        except mcrcon.MCRconException:
+            self.error('Unable to fetch user counts.')
+        except socket.error:
+            self.error('Connection is dead.')
+            self.alive = False
+            return None
+        except (TypeError, LookupError):
+            self.error('Unable to process user counts.')
+        return data
diff --git a/collectors/python.d.plugin/spigotmc/spigotmc.conf b/collectors/python.d.plugin/spigotmc/spigotmc.conf
new file mode 100644
index 000000000..3ba492def
--- /dev/null
+++ b/collectors/python.d.plugin/spigotmc/spigotmc.conf
@@ -0,0 +1,68 @@
+# netdata python.d.plugin configuration for spigotmc
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# In addition to the above, spigotmc supports the following:
+#
+#     host: localhost         # The host to connect to.  Defaults to the local system.
+#     port: 25575             # THe port the remote console is listening on.
+#     password: ''            # The remote console password.  Most be set correctly.
diff --git a/collectors/python.d.plugin/springboot/Makefile.inc b/collectors/python.d.plugin/springboot/Makefile.inc
new file mode 100644
index 000000000..06775f937
--- /dev/null
+++ b/collectors/python.d.plugin/springboot/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += springboot/springboot.chart.py
+dist_pythonconfig_DATA += springboot/springboot.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += springboot/README.md springboot/Makefile.inc
+
diff --git a/collectors/python.d.plugin/springboot/README.md b/collectors/python.d.plugin/springboot/README.md
new file mode 100644
index 000000000..008436a4f
--- /dev/null
+++ b/collectors/python.d.plugin/springboot/README.md
@@ -0,0 +1,129 @@
+# springboot
+
+This module will monitor one or more Java Spring-boot applications depending on configuration.
+
+It produces following charts:
+
+1. **Response Codes** in requests/s
+ * 1xx
+ * 2xx
+ * 3xx
+ * 4xx
+ * 5xx
+ * others
+
+2. **Threads**
+ * daemon
+ * total
+
+3. **GC Time** in milliseconds and **GC Operations** in operations/s
+ * Copy
+ * MarkSweep
+ * ...
+
+4. **Heap Mmeory Usage** in KB
+ * used
+ * committed
+
+### configuration
+
+Please see the [Monitoring Java Spring Boot Applications](https://github.com/netdata/netdata/wiki/Monitoring-Java-Spring-Boot-Applications) page for detailed info about module configuration.
+
+---
+
+# Monitoring Java Spring Boot Applications
+
+Netdata can be used to monitor running Java [Spring Boot](https://spring.io/) applications that expose their metrics with the use of the **Spring Boot Actuator** included in Spring Boot library.
+
+The Spring Boot Actuator exposes these metrics over HTTP and is very easy to use:
+* add `org.springframework.boot:spring-boot-starter-actuator` to your application dependencies
+* set `endpoints.metrics.sensitive=false` in your `application.properties`
+
+You can create custom Metrics by add and inject a PublicMetrics in your application.
+This is a example to add custom metrics:
+```java
+package com.example;
+
+import org.springframework.boot.actuate.endpoint.PublicMetrics;
+import org.springframework.boot.actuate.metrics.Metric;
+import org.springframework.stereotype.Service;
+
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryPoolMXBean;
+import java.util.ArrayList;
+import java.util.Collection;
+
+@Service
+public class HeapPoolMetrics implements PublicMetrics {
+
+    private static final String PREFIX = "mempool.";
+    private static final String KEY_EDEN = PREFIX + "eden";
+    private static final String KEY_SURVIVOR = PREFIX + "survivor";
+    private static final String KEY_TENURED = PREFIX + "tenured";
+
+    @Override
+    public Collection<Metric<?>> metrics() {
+        Collection<Metric<?>> result = new ArrayList<>(4);
+        for (MemoryPoolMXBean mem : ManagementFactory.getMemoryPoolMXBeans()) {
+            String poolName = mem.getName();
+            String name = null;
+            if (poolName.indexOf("Eden Space") != -1) {
+                name = KEY_EDEN;
+            } else if (poolName.indexOf("Survivor Space") != -1) {
+                name = KEY_SURVIVOR;
+            } else if (poolName.indexOf("Tenured Gen") != -1 || poolName.indexOf("Old Gen") != -1) {
+                name = KEY_TENURED;
+            }
+
+            if (name != null) {
+                result.add(newMemoryMetric(name, mem.getUsage().getMax()));
+                result.add(newMemoryMetric(name + ".init", mem.getUsage().getInit()));
+                result.add(newMemoryMetric(name + ".committed", mem.getUsage().getCommitted()));
+                result.add(newMemoryMetric(name + ".used", mem.getUsage().getUsed()));
+            }
+        }
+        return result;
+    }
+
+    private Metric<Long> newMemoryMetric(String name, long bytes) {
+        return new Metric<>(name, bytes / 1024);
+    }
+}
+```
+
+Please refer [Spring Boot Actuator: Production-ready features](https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready.html) and [81. Actuator - Part IX. ‘How-to’ guides](https://docs.spring.io/spring-boot/docs/current/reference/html/howto-actuator.html) for more information.
+
+## Using netdata springboot module
+
+The springboot module is enabled by default. It looks up `http://localhost:8080/metrics` and `http://127.0.0.1:8080/metrics` to detect Spring Boot application by default. You can change it by editing `/etc/netdata/python.d/springboot.conf` (to edit it on your system run `/etc/netdata/edit-config python.d/springboot.conf`).
+
+This module defines some common charts, and you can add custom charts by change the configurations.
+
+The configuration format is like:
+```yaml
+<id>:
+  name: '<name>'
+  url:  '<metrics endpoint>' # ex. http://localhost:8080/metrics
+  user: '<username>'         # optional
+  pass: '<password>'         # optional
+  defaults:
+    [<chart-id>]: true|false
+  extras:
+  - id: '<chart-id>'
+    options:
+      title:  '***'
+      units:  '***'
+      family: '***'
+      context: 'springboot.***'
+      charttype: 'stacked' | 'area' | 'line'
+    lines:
+    - { dimension: 'myapp_ok',  name: 'ok',  algorithm: 'absolute', multiplier: 1, divisor: 1} # it shows "myapp.ok" metrics
+    - { dimension: 'myapp_ng',  name: 'ng',  algorithm: 'absolute', multiplier: 1, divisor: 1} # it shows "myapp.ng" metrics
+```
+
+By default, it creates `response_code`, `threads`, `gc_time`, `gc_ope` abd `heap` charts.
+You can disable the default charts by set `defaults.<chart-id>: false`.
+
+The dimension name of extras charts should replace `.` to `_`.
+
+Please check [springboot.conf](springboot.conf) for more examples.
\ No newline at end of file
diff --git a/python.d/springboot.chart.py b/collectors/python.d.plugin/springboot/springboot.chart.py
index 60ad0cccb..7df37e1d0 100644
--- a/python.d/springboot.chart.py
+++ b/collectors/python.d.plugin/springboot/springboot.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: tomcat netdata python.d module
 # Author: Wing924
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import json
 from bases.FrameworkServices.UrlService import UrlService
@@ -17,54 +18,61 @@ DEFAULT_CHARTS = {
     'response_code': {
         'options': [None, "Response Codes", "requests/s", "response", "springboot.response_code", "stacked"],
         'lines': [
-            ["resp_other",  'Other', 'incremental'],
-            ["resp_1xx",    '1xx',   'incremental'],
-            ["resp_2xx",    '2xx',   'incremental'],
-            ["resp_3xx",    '3xx',   'incremental'],
-            ["resp_4xx",    '4xx',   'incremental'],
-            ["resp_5xx",    '5xx',   'incremental'],
-        ]},
+            ["resp_other", 'Other', 'incremental'],
+            ["resp_1xx", '1xx', 'incremental'],
+            ["resp_2xx", '2xx', 'incremental'],
+            ["resp_3xx", '3xx', 'incremental'],
+            ["resp_4xx", '4xx', 'incremental'],
+            ["resp_5xx", '5xx', 'incremental'],
+        ]
+    },
     'threads': {
         'options': [None, "Threads", "current threads", "threads", "springboot.threads", "area"],
         'lines': [
             ["threads_daemon", 'daemon', 'absolute'],
             ["threads", 'total', 'absolute'],
-        ]},
+        ]
+    },
     'gc_time': {
         'options': [None, "GC Time", "milliseconds", "garbage collection", "springboot.gc_time", "stacked"],
         'lines': [
-            ["gc_copy_time",                'Copy',                 'incremental'],
-            ["gc_marksweepcompact_time",    'MarkSweepCompact',     'incremental'],
-            ["gc_parnew_time",              'ParNew',               'incremental'],
-            ["gc_concurrentmarksweep_time", 'ConcurrentMarkSweep',  'incremental'],
-            ["gc_ps_scavenge_time",         'PS Scavenge',          'incremental'],
-            ["gc_ps_marksweep_time",        'PS MarkSweep',         'incremental'],
-            ["gc_g1_young_generation_time", 'G1 Young Generation',  'incremental'],
-            ["gc_g1_old_generation_time",   'G1 Old Generation',    'incremental'],
-        ]},
+            ["gc_copy_time", 'Copy', 'incremental'],
+            ["gc_marksweepcompact_time", 'MarkSweepCompact', 'incremental'],
+            ["gc_parnew_time", 'ParNew', 'incremental'],
+            ["gc_concurrentmarksweep_time", 'ConcurrentMarkSweep', 'incremental'],
+            ["gc_ps_scavenge_time", 'PS Scavenge', 'incremental'],
+            ["gc_ps_marksweep_time", 'PS MarkSweep', 'incremental'],
+            ["gc_g1_young_generation_time", 'G1 Young Generation', 'incremental'],
+            ["gc_g1_old_generation_time", 'G1 Old Generation', 'incremental'],
+        ]
+    },
     'gc_ope': {
         'options': [None, "GC Operations", "operations/s", "garbage collection", "springboot.gc_ope", "stacked"],
         'lines': [
-            ["gc_copy_count",                'Copy',                 'incremental'],
-            ["gc_marksweepcompact_count",    'MarkSweepCompact',     'incremental'],
-            ["gc_parnew_count",              'ParNew',               'incremental'],
-            ["gc_concurrentmarksweep_count", 'ConcurrentMarkSweep',  'incremental'],
-            ["gc_ps_scavenge_count",         'PS Scavenge',          'incremental'],
-            ["gc_ps_marksweep_count",        'PS MarkSweep',         'incremental'],
-            ["gc_g1_young_generation_count", 'G1 Young Generation',  'incremental'],
-            ["gc_g1_old_generation_count",   'G1 Old Generation',    'incremental'],
-        ]},
+            ["gc_copy_count", 'Copy', 'incremental'],
+            ["gc_marksweepcompact_count", 'MarkSweepCompact', 'incremental'],
+            ["gc_parnew_count", 'ParNew', 'incremental'],
+            ["gc_concurrentmarksweep_count", 'ConcurrentMarkSweep', 'incremental'],
+            ["gc_ps_scavenge_count", 'PS Scavenge', 'incremental'],
+            ["gc_ps_marksweep_count", 'PS MarkSweep', 'incremental'],
+            ["gc_g1_young_generation_count", 'G1 Young Generation', 'incremental'],
+            ["gc_g1_old_generation_count", 'G1 Old Generation', 'incremental'],
+        ]
+    },
     'heap': {
         'options': [None, "Heap Memory Usage", "KB", "heap memory", "springboot.heap", "area"],
         'lines': [
             ["heap_committed", 'committed', "absolute"],
             ["heap_used", 'used', "absolute"],
-        ]},
+        ]
+    }
 }
 
+
 class ExtraChartError(ValueError):
     pass
 
+
 class Service(UrlService):
     def __init__(self, configuration=None, name=None):
         UrlService.__init__(self, configuration=configuration, name=name)
@@ -87,11 +95,11 @@ class Service(UrlService):
             return None
 
         result = {
-            'resp_1xx':   0,
-            'resp_2xx':   0,
-            'resp_3xx':   0,
-            'resp_4xx':   0,
-            'resp_5xx':   0,
+            'resp_1xx': 0,
+            'resp_2xx': 0,
+            'resp_3xx': 0,
+            'resp_4xx': 0,
+            'resp_5xx': 0,
             'resp_other': 0,
         }
 
@@ -121,14 +129,14 @@ class Service(UrlService):
             self.order.append(extra['id'])
 
     def _add_extra_chart(self, chart):
-        chart_id  = chart.get('id',      None) or die('id is not defined in extra chart')
-        options   = chart.get('options', None) or die('option is not defined in extra chart: %s' % chart_id)
-        lines     = chart.get('lines',   None) or die('lines is not defined in extra chart: %s' % chart_id)
-
-        title     = options.get('title', None) or die('title is missing: %s' % chart_id)
-        units     = options.get('units', None) or die('units is missing: %s' % chart_id)
-        family    = options.get('family',    title)
-        context   = options.get('context',   'springboot.' + title)
+        chart_id = chart.get('id', None) or self.die('id is not defined in extra chart')
+        options = chart.get('options', None) or self.die('option is not defined in extra chart: %s' % chart_id)
+        lines = chart.get('lines', None) or self.die('lines is not defined in extra chart: %s' % chart_id)
+
+        title = options.get('title', None) or self.die('title is missing: %s' % chart_id)
+        units = options.get('units', None) or self.die('units is missing: %s' % chart_id)
+        family = options.get('family', title)
+        context = options.get('context', 'springboot.' + title)
         charttype = options.get('charttype', 'line')
 
         result = {
@@ -137,11 +145,11 @@ class Service(UrlService):
         }
 
         for line in lines:
-            dimension  = line.get('dimension',  None) or die('dimension is missing: %s' % chart_id)
-            name       = line.get('name',       dimension)
-            algorithm  = line.get('algorithm',  'absolute')
+            dimension = line.get('dimension',  None) or self.die('dimension is missing: %s' % chart_id)
+            name = line.get('name', dimension)
+            algorithm = line.get('algorithm', 'absolute')
             multiplier = line.get('multiplier', 1)
-            divisor    = line.get('divisor',    1)
+            divisor = line.get('divisor', 1)
             result['lines'].append([dimension, name, algorithm, multiplier, divisor])
 
         self.definitions[chart_id] = result
diff --git a/conf.d/python.d/springboot.conf b/collectors/python.d.plugin/springboot/springboot.conf
index 40b5fb437..40b5fb437 100644
--- a/conf.d/python.d/springboot.conf
+++ b/collectors/python.d.plugin/springboot/springboot.conf
diff --git a/collectors/python.d.plugin/squid/Makefile.inc b/collectors/python.d.plugin/squid/Makefile.inc
new file mode 100644
index 000000000..76ecff81e
--- /dev/null
+++ b/collectors/python.d.plugin/squid/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += squid/squid.chart.py
+dist_pythonconfig_DATA += squid/squid.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += squid/README.md squid/Makefile.inc
+
diff --git a/collectors/python.d.plugin/squid/README.md b/collectors/python.d.plugin/squid/README.md
new file mode 100644
index 000000000..9c9b62f27
--- /dev/null
+++ b/collectors/python.d.plugin/squid/README.md
@@ -0,0 +1,38 @@
+# squid
+
+This module will monitor one or more squid instances depending on configuration.
+
+It produces following charts:
+
+1. **Client Bandwidth** in kilobits/s
+ * in
+ * out
+ * hits
+
+2. **Client Requests** in requests/s
+ * requests
+ * hits
+ * errors
+
+3. **Server Bandwidth** in kilobits/s
+ * in
+ * out
+
+4. **Server Requests** in requests/s
+ * requests
+ * errors
+
+### configuration
+
+```yaml
+priority     : 50000
+
+local:
+  request : 'cache_object://localhost:3128/counters'
+  host    : 'localhost'
+  port    : 3128
+```
+
+Without any configuration module will try to autodetect where squid presents its `counters` data
+
+---
diff --git a/python.d/squid.chart.py b/collectors/python.d.plugin/squid/squid.chart.py
index ba8f982ff..fd54168f0 100644
--- a/python.d/squid.chart.py
+++ b/collectors/python.d.plugin/squid/squid.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: squid netdata python.d module
 # Author: Pawel Krupa (paulfantom)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from bases.FrameworkServices.SocketService import SocketService
 
@@ -15,31 +16,35 @@ ORDER = ['clients_net', 'clients_requests', 'servers_net', 'servers_requests']
 
 CHARTS = {
     'clients_net': {
-        'options': [None, "Squid Client Bandwidth", "kilobits/s", "clients", "squid.clients_net", "area"],
+        'options': [None, 'Squid Client Bandwidth', 'kilobits/s', 'clients', 'squid.clients_net', 'area'],
         'lines': [
-            ["client_http_kbytes_in", "in", "incremental", 8, 1],
-            ["client_http_kbytes_out", "out", "incremental", -8, 1],
-            ["client_http_hit_kbytes_out", "hits", "incremental", -8, 1]
-        ]},
+            ['client_http_kbytes_in', 'in', 'incremental', 8, 1],
+            ['client_http_kbytes_out', 'out', 'incremental', -8, 1],
+            ['client_http_hit_kbytes_out', 'hits', 'incremental', -8, 1]
+        ]
+    },
     'clients_requests': {
-        'options': [None, "Squid Client Requests", "requests/s", "clients", "squid.clients_requests", 'line'],
+        'options': [None, 'Squid Client Requests', 'requests/s', 'clients', 'squid.clients_requests', 'line'],
         'lines': [
-            ["client_http_requests", "requests", "incremental"],
-            ["client_http_hits", "hits", "incremental"],
-            ["client_http_errors", "errors", "incremental", -1, 1]
-        ]},
+            ['client_http_requests', 'requests', 'incremental'],
+            ['client_http_hits', 'hits', 'incremental'],
+            ['client_http_errors', 'errors', 'incremental', -1, 1]
+        ]
+    },
     'servers_net': {
-        'options': [None, "Squid Server Bandwidth", "kilobits/s", "servers", "squid.servers_net", "area"],
+        'options': [None, 'Squid Server Bandwidth', 'kilobits/s', 'servers', 'squid.servers_net', 'area'],
         'lines': [
-            ["server_all_kbytes_in", "in", "incremental", 8, 1],
-            ["server_all_kbytes_out", "out", "incremental", -8, 1]
-        ]},
+            ['server_all_kbytes_in', 'in', 'incremental', 8, 1],
+            ['server_all_kbytes_out', 'out', 'incremental', -8, 1]
+        ]
+    },
     'servers_requests': {
-        'options': [None, "Squid Server Requests", "requests/s", "servers", "squid.servers_requests", 'line'],
+        'options': [None, 'Squid Server Requests', 'requests/s', 'servers', 'squid.servers_requests', 'line'],
         'lines': [
-            ["server_all_requests", "requests", "incremental"],
-            ["server_all_errors", "errors", "incremental", -1, 1]
-        ]}
+            ['server_all_requests', 'requests', 'incremental'],
+            ['server_all_errors', 'errors', 'incremental', -1, 1]
+        ]
+    }
 }
 
 
@@ -47,8 +52,8 @@ class Service(SocketService):
     def __init__(self, configuration=None, name=None):
         SocketService.__init__(self, configuration=configuration, name=name)
         self._keep_alive = True
-        self.request = ""
-        self.host = "localhost"
+        self.request = ''
+        self.host = 'localhost'
         self.port = 3128
         self.order = ORDER
         self.definitions = CHARTS
@@ -62,43 +67,43 @@ class Service(SocketService):
 
         data = dict()
         try:
-            raw = ""
+            raw = ''
             for tmp in response.split('\r\n'):
-                if tmp.startswith("sample_time"):
+                if tmp.startswith('sample_time'):
                     raw = tmp
                     break
 
             if raw.startswith('<'):
-                self.error("invalid data received")
+                self.error('invalid data received')
                 return None
 
             for row in raw.split('\n'):
-                if row.startswith(("client", "server.all")):
-                    tmp = row.split("=")
+                if row.startswith(('client', 'server.all')):
+                    tmp = row.split('=')
                     data[tmp[0].replace('.', '_').strip(' ')] = int(tmp[1])
 
         except (ValueError, AttributeError, TypeError):
-            self.error("invalid data received")
+            self.error('invalid data received')
             return None
 
         if not data:
-            self.error("no data received")
+            self.error('no data received')
             return None
         return data
 
     def _check_raw_data(self, data):
         header = data[:1024].lower()
 
-        if "connection: keep-alive" in header:
+        if 'connection: keep-alive' in header:
             self._keep_alive = True
         else:
             self._keep_alive = False
 
-        if data[-7:] == "\r\n0\r\n\r\n" and "transfer-encoding: chunked" in header:  # HTTP/1.1 response
-            self.debug("received full response from squid")
+        if data[-7:] == '\r\n0\r\n\r\n' and 'transfer-encoding: chunked' in header:  # HTTP/1.1 response
+            self.debug('received full response from squid')
             return True
 
-        self.debug("waiting more data from squid")
+        self.debug('waiting more data from squid')
         return False
 
     def check(self):
@@ -109,10 +114,10 @@ class Service(SocketService):
         self._parse_config()
         # format request
         req = self.request.decode()
-        if not req.startswith("GET"):
-            req = "GET " + req
-        if not req.endswith(" HTTP/1.1\r\n\r\n"):
-            req += " HTTP/1.1\r\n\r\n"
+        if not req.startswith('GET'):
+            req = 'GET ' + req
+        if not req.endswith(' HTTP/1.1\r\n\r\n'):
+            req += ' HTTP/1.1\r\n\r\n'
         self.request = req.encode()
         if self._get_data() is not None:
             return True
diff --git a/conf.d/python.d/squid.conf b/collectors/python.d.plugin/squid/squid.conf
index 564187f00..564187f00 100644
--- a/conf.d/python.d/squid.conf
+++ b/collectors/python.d.plugin/squid/squid.conf
diff --git a/collectors/python.d.plugin/tomcat/Makefile.inc b/collectors/python.d.plugin/tomcat/Makefile.inc
new file mode 100644
index 000000000..940a7835e
--- /dev/null
+++ b/collectors/python.d.plugin/tomcat/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += tomcat/tomcat.chart.py
+dist_pythonconfig_DATA += tomcat/tomcat.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += tomcat/README.md tomcat/Makefile.inc
+
diff --git a/collectors/python.d.plugin/tomcat/README.md b/collectors/python.d.plugin/tomcat/README.md
new file mode 100644
index 000000000..e548bd338
--- /dev/null
+++ b/collectors/python.d.plugin/tomcat/README.md
@@ -0,0 +1,33 @@
+# tomcat
+
+Present tomcat containers memory utilization.
+
+Charts:
+
+1. **Requests** per second
+ * accesses
+
+2. **Volume** in KB/s
+ * volume
+
+3. **Threads**
+ * current
+ * busy
+
+4. **JVM Free Memory** in MB
+ * jvm
+
+### configuration
+
+```yaml
+localhost:
+  name : 'local'
+  url  : 'http://127.0.0.1:8080/manager/status?XML=true'
+  user : 'tomcat_username'
+  pass : 'secret_tomcat_password'
+```
+
+Without configuration, module attempts to connect to `http://localhost:8080/manager/status?XML=true`, without any credentials.
+So it will probably fail.
+
+---
diff --git a/python.d/tomcat.chart.py b/collectors/python.d.plugin/tomcat/tomcat.chart.py
index a570d5643..3c2d0ed40 100644
--- a/python.d/tomcat.chart.py
+++ b/collectors/python.d.plugin/tomcat/tomcat.chart.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 # Description: tomcat netdata python.d module
 # Author: Pawel Krupa (paulfantom)
+# Author: Wei He (Wing924)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import xml.etree.ElementTree as ET
 
@@ -16,67 +18,75 @@ ORDER = ['accesses', 'bandwidth', 'processing_time', 'threads', 'jvm', 'jvm_eden
 
 CHARTS = {
     'accesses': {
-        'options': [None, "Requests", "requests/s", "statistics", "tomcat.accesses", "area"],
+        'options': [None, 'Requests', 'requests/s', 'statistics', 'tomcat.accesses', 'area'],
         'lines': [
-            ["requestCount", 'accesses', 'incremental'],
-            ["errorCount", 'errors', 'incremental'],
-        ]},
+            ['requestCount', 'accesses', 'incremental'],
+            ['errorCount', 'errors', 'incremental'],
+        ]
+    },
     'bandwidth': {
-        'options': [None, "Bandwidth", "KB/s", "statistics", "tomcat.bandwidth", "area"],
+        'options': [None, 'Bandwidth', 'KB/s', 'statistics', 'tomcat.bandwidth', 'area'],
         'lines': [
-            ["bytesSent", 'sent', 'incremental', 1, 1024],
-            ["bytesReceived", 'received', 'incremental', 1, 1024],
-        ]},
+            ['bytesSent', 'sent', 'incremental', 1, 1024],
+            ['bytesReceived', 'received', 'incremental', 1, 1024],
+        ]
+    },
     'processing_time': {
-        'options': [None, "processing time", "seconds", "statistics", "tomcat.processing_time", "area"],
+        'options': [None, 'processing time', 'seconds', 'statistics', 'tomcat.processing_time', 'area'],
         'lines': [
-            ["processingTime", 'processing time', 'incremental', 1, 1000]
-        ]},
+            ['processingTime', 'processing time', 'incremental', 1, 1000]
+        ]
+    },
     'threads': {
-        'options': [None, "Threads", "current threads", "statistics", "tomcat.threads", "area"],
+        'options': [None, 'Threads', 'current threads', 'statistics', 'tomcat.threads', 'area'],
         'lines': [
-            ["currentThreadCount", 'current', "absolute"],
-            ["currentThreadsBusy", 'busy', "absolute"]
-        ]},
+            ['currentThreadCount', 'current', 'absolute'],
+            ['currentThreadsBusy', 'busy', 'absolute']
+        ]
+    },
     'jvm': {
-        'options': [None, "JVM Memory Pool Usage", "MB", "memory", "tomcat.jvm", "stacked"],
+        'options': [None, 'JVM Memory Pool Usage', 'MB', 'memory', 'tomcat.jvm', 'stacked'],
         'lines': [
-            ["free", 'free', "absolute", 1, 1048576],
-            ["eden_used", 'eden', "absolute", 1, 1048576],
-            ["survivor_used", 'survivor', "absolute", 1, 1048576],
-            ["tenured_used", 'tenured', "absolute", 1, 1048576],
-            ["code_cache_used", 'code cache', "absolute", 1, 1048576],
-            ["compressed_used", 'compressed', "absolute", 1, 1048576],
-            ["metaspace_used", 'metaspace', "absolute", 1, 1048576],
-        ]},
+            ['free', 'free', 'absolute', 1, 1048576],
+            ['eden_used', 'eden', 'absolute', 1, 1048576],
+            ['survivor_used', 'survivor', 'absolute', 1, 1048576],
+            ['tenured_used', 'tenured', 'absolute', 1, 1048576],
+            ['code_cache_used', 'code cache', 'absolute', 1, 1048576],
+            ['compressed_used', 'compressed', 'absolute', 1, 1048576],
+            ['metaspace_used', 'metaspace', 'absolute', 1, 1048576],
+        ]
+    },
     'jvm_eden': {
-        'options': [None, "Eden Memory Usage", "MB", "memory", "tomcat.jvm_eden", "area"],
+        'options': [None, 'Eden Memory Usage', 'MB', 'memory', 'tomcat.jvm_eden', 'area'],
         'lines': [
-            ["eden_used", 'used', "absolute", 1, 1048576],
-            ["eden_commited", 'commited', "absolute", 1, 1048576],
-            ["eden_max", 'max', "absolute", 1, 1048576]
-        ]},
+            ['eden_used', 'used', 'absolute', 1, 1048576],
+            ['eden_committed', 'committed', 'absolute', 1, 1048576],
+            ['eden_max', 'max', 'absolute', 1, 1048576]
+        ]
+    },
     'jvm_survivor': {
-        'options': [None, "Survivor Memory Usage", "MB", "memory", "tomcat.jvm_survivor", "area"],
+        'options': [None, 'Survivor Memory Usage', 'MB', 'memory', 'tomcat.jvm_survivor', 'area'],
         'lines': [
-            ["survivor_used", 'used', "absolute", 1, 1048576],
-            ["survivor_commited", 'commited', "absolute", 1, 1048576],
-            ["survivor_max", 'max', "absolute", 1, 1048576]
-        ]},
+            ['survivor_used', 'used', 'absolute', 1, 1048576],
+            ['survivor_committed', 'committed', 'absolute', 1, 1048576],
+            ['survivor_max', 'max', 'absolute', 1, 1048576]
+        ]
+    },
     'jvm_tenured': {
-        'options': [None, "Tenured Memory Usage", "MB", "memory", "tomcat.jvm_tenured", "area"],
+        'options': [None, 'Tenured Memory Usage', 'MB', 'memory', 'tomcat.jvm_tenured', 'area'],
         'lines': [
-            ["tenured_used", 'used', "absolute", 1, 1048576],
-            ["tenured_commited", 'commited', "absolute", 1, 1048576],
-            ["tenured_max", 'max', "absolute", 1, 1048576]
-        ]},
+            ['tenured_used', 'used', 'absolute', 1, 1048576],
+            ['tenured_committed', 'committed', 'absolute', 1, 1048576],
+            ['tenured_max', 'max', 'absolute', 1, 1048576]
+        ]
+    }
 }
 
 
 class Service(UrlService):
     def __init__(self, configuration=None, name=None):
         UrlService.__init__(self, configuration=configuration, name=name)
-        self.url = self.configuration.get('url', "http://127.0.0.1:8080/manager/status?XML=true")
+        self.url = self.configuration.get('url', 'http://127.0.0.1:8080/manager/status?XML=true')
         self.connector_name = self.configuration.get('connector_name', None)
         self.order = ORDER
         self.definitions = CHARTS
@@ -115,27 +125,27 @@ class Service(UrlService):
                 name = pool.get('name')
                 if 'Eden Space' in name:
                     data['eden_used'] = pool.get('usageUsed')
-                    data['eden_commited'] = pool.get('usageCommitted')
+                    data['eden_committed'] = pool.get('usageCommitted')
                     data['eden_max'] = pool.get('usageMax')
                 elif 'Survivor Space' in name:
                     data['survivor_used'] = pool.get('usageUsed')
-                    data['survivor_commited'] = pool.get('usageCommitted')
+                    data['survivor_committed'] = pool.get('usageCommitted')
                     data['survivor_max'] = pool.get('usageMax')
                 elif 'Tenured Gen' in name or 'Old Gen' in name:
                     data['tenured_used'] = pool.get('usageUsed')
-                    data['tenured_commited'] = pool.get('usageCommitted')
+                    data['tenured_committed'] = pool.get('usageCommitted')
                     data['tenured_max'] = pool.get('usageMax')
                 elif name == 'Code Cache':
                     data['code_cache_used'] = pool.get('usageUsed')
-                    data['code_cache_commited'] = pool.get('usageCommitted')
+                    data['code_cache_committed'] = pool.get('usageCommitted')
                     data['code_cache_max'] = pool.get('usageMax')
                 elif name == 'Compressed':
                     data['compressed_used'] = pool.get('usageUsed')
-                    data['compressed_commited'] = pool.get('usageCommitted')
+                    data['compressed_committed'] = pool.get('usageCommitted')
                     data['compressed_max'] = pool.get('usageMax')
                 elif name == 'Metaspace':
                     data['metaspace_used'] = pool.get('usageUsed')
-                    data['metaspace_commited'] = pool.get('usageCommitted')
+                    data['metaspace_committed'] = pool.get('usageCommitted')
                     data['metaspace_max'] = pool.get('usageMax')
 
             if connector:
@@ -145,9 +155,9 @@ class Service(UrlService):
 
                 request_info = connector.find('requestInfo')
                 data['processingTime'] = request_info.get('processingTime')
-                data['requestCount']   = request_info.get('requestCount')
-                data['errorCount']     = request_info.get('errorCount')
-                data['bytesReceived']  = request_info.get('bytesReceived')
-                data['bytesSent']      = request_info.get('bytesSent')
+                data['requestCount'] = request_info.get('requestCount')
+                data['errorCount'] = request_info.get('errorCount')
+                data['bytesReceived'] = request_info.get('bytesReceived')
+                data['bytesSent'] = request_info.get('bytesSent')
 
         return data or None
diff --git a/conf.d/python.d/tomcat.conf b/collectors/python.d.plugin/tomcat/tomcat.conf
index c63f06cfa..c63f06cfa 100644
--- a/conf.d/python.d/tomcat.conf
+++ b/collectors/python.d.plugin/tomcat/tomcat.conf
diff --git a/collectors/python.d.plugin/traefik/Makefile.inc b/collectors/python.d.plugin/traefik/Makefile.inc
new file mode 100644
index 000000000..926d56dda
--- /dev/null
+++ b/collectors/python.d.plugin/traefik/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += traefik/traefik.chart.py
+dist_pythonconfig_DATA += traefik/traefik.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += traefik/README.md traefik/Makefile.inc
+
diff --git a/collectors/python.d.plugin/traefik/README.md b/collectors/python.d.plugin/traefik/README.md
new file mode 100644
index 000000000..9b4a18208
--- /dev/null
+++ b/collectors/python.d.plugin/traefik/README.md
@@ -0,0 +1,54 @@
+# traefik
+
+Module uses the `health` API to provide statistics.
+
+It produces:
+
+1. **Responses** by statuses
+ * success (1xx, 2xx, 304)
+ * error (5xx)
+ * redirect (3xx except 304)
+ * bad (4xx)
+ * other (all other responses)
+
+2. **Responses** by codes
+ * 2xx (successful)
+ * 5xx (internal server errors)
+ * 3xx (redirect)
+ * 4xx (bad)
+ * 1xx (informational)
+ * other (non-standart responses)
+
+3. **Detailed Response Codes** requests/s (number of responses for each response code family individually)
+
+4. **Requests**/s
+ * request statistics
+
+5. **Total response time**
+ * sum of all response time
+
+6. **Average response time**
+
+7. **Average response time per iteration**
+
+8. **Uptime**
+ * Traefik server uptime
+
+### configuration
+
+Needs only `url` to server's `health`
+
+Here is an example for local server:
+
+```yaml
+update_every : 1
+priority     : 60000
+
+local:
+  url     : 'http://localhost:8080/health'
+  retries : 10
+```
+
+Without configuration, module attempts to connect to `http://localhost:8080/health`.
+
+---
diff --git a/python.d/traefik.chart.py b/collectors/python.d.plugin/traefik/traefik.chart.py
index f7c3e223b..dc8933220 100644
--- a/python.d/traefik.chart.py
+++ b/collectors/python.d.plugin/traefik/traefik.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description: traefik netdata python.d module
 # Author: Alexandre Menezes (@ale_menezes)
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 from json import loads
 from collections import defaultdict
@@ -32,7 +33,8 @@ CHARTS = {
             ['redirects', 'redirect', 'incremental'],
             ['bad_requests', 'bad', 'incremental'],
             ['other_requests', 'other', 'incremental']
-        ]},
+        ]
+    },
     'response_codes': {
         'options': [None, 'Responses by codes', 'requests/s', 'responses', 'traefik.response_codes', 'stacked'],
         'lines': [
@@ -42,37 +44,45 @@ CHARTS = {
             ['4xx', None, 'incremental'],
             ['1xx', None, 'incremental'],
             ['other', None, 'incremental']
-        ]},
+        ]
+    },
     'detailed_response_codes': {
-        'options': [None, 'Detailed response codes', 'requests/s', 'responses', 'traefik.detailed_response_codes', 'stacked'],
-        'lines': [
-        ]},
+        'options': [None, 'Detailed response codes', 'requests/s', 'responses', 'traefik.detailed_response_codes',
+                    'stacked'],
+        'lines': []
+    },
     'requests': {
         'options': [None, 'Requests', 'requests/s', 'requests', 'traefik.requests', 'line'],
         'lines': [
             ['total_count', 'requests', 'incremental']
-        ]},
+        ]
+    },
     'total_response_time': {
         'options': [None, 'Total response time', 'seconds', 'timings', 'traefik.total_response_time', 'line'],
         'lines': [
             ['total_response_time_sec', 'response', 'absolute', 1, 10000]
-        ]},
+        ]
+    },
     'average_response_time': {
         'options': [None, 'Average response time', 'milliseconds', 'timings', 'traefik.average_response_time', 'line'],
         'lines': [
             ['average_response_time_sec', 'response', 'absolute', 1, 1000]
-        ]},
+        ]
+    },
     'average_response_time_per_iteration': {
-        'options': [None, 'Average response time per iteration', 'milliseconds', 'timings', 'traefik.average_response_time_per_iteration', 'line'],
+        'options': [None, 'Average response time per iteration', 'milliseconds', 'timings',
+                    'traefik.average_response_time_per_iteration', 'line'],
         'lines': [
             ['average_response_time_per_iteration_sec', 'response', 'incremental', 1, 10000]
-        ]},
+        ]
+    },
     'uptime': {
         'options': [None, 'Uptime', 'seconds', 'uptime', 'traefik.uptime', 'line'],
         'lines': [
             ['uptime_sec', 'uptime', 'absolute']
-        ]}
+        ]
     }
+}
 
 HEALTH_STATS = [
     'uptime_sec',
@@ -82,6 +92,7 @@ HEALTH_STATS = [
     'total_status_code_count'
 ]
 
+
 class Service(UrlService):
     def __init__(self, configuration=None, name=None):
         UrlService.__init__(self, configuration=configuration, name=name)
@@ -116,9 +127,11 @@ class Service(UrlService):
         self.data['average_response_time_sec'] *= 1000000
         self.data['total_response_time_sec'] *= 10000
         if data['total_count'] != self.last_total_count:
-            self.data['average_response_time_per_iteration_sec'] = (data['total_response_time_sec'] - self.last_total_response_time) * 1000000 / (data['total_count'] - self.last_total_count)
+            self.data['average_response_time_per_iteration_sec'] = \
+                (data['total_response_time_sec'] - self.last_total_response_time) * \
+                1000000 / (data['total_count'] - self.last_total_count)
         else:
-            self.data['average_response_time_per_iteration_sec']  = 0
+            self.data['average_response_time_per_iteration_sec'] = 0
         self.last_total_response_time = data['total_response_time_sec']
         self.last_total_count = data['total_count']
 
@@ -165,6 +178,7 @@ class Service(UrlService):
                     self.charts['detailed_response_codes'].add_dimension([code, code, 'incremental'])
                 self.data[code] = value
 
+
 def fetch_data_(raw_data, metrics):
     data = dict()
 
diff --git a/conf.d/python.d/traefik.conf b/collectors/python.d.plugin/traefik/traefik.conf
index 909b9e549..909b9e549 100644
--- a/conf.d/python.d/traefik.conf
+++ b/collectors/python.d.plugin/traefik/traefik.conf
diff --git a/collectors/python.d.plugin/unbound/Makefile.inc b/collectors/python.d.plugin/unbound/Makefile.inc
new file mode 100644
index 000000000..59c306aed
--- /dev/null
+++ b/collectors/python.d.plugin/unbound/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += unbound/unbound.chart.py
+dist_pythonconfig_DATA += unbound/unbound.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += unbound/README.md unbound/Makefile.inc
+
diff --git a/collectors/python.d.plugin/unbound/README.md b/collectors/python.d.plugin/unbound/README.md
new file mode 100644
index 000000000..3b4fa16fd
--- /dev/null
+++ b/collectors/python.d.plugin/unbound/README.md
@@ -0,0 +1,76 @@
+# unbound
+
+Monitoring uses the remote control interface to fetch statistics.
+
+Provides the following charts:
+
+1. **Queries Processed**
+ * Ratelimited
+ * Cache Misses
+ * Cache Hits
+ * Expired
+ * Prefetched
+ * Recursive
+
+2. **Request List**
+ * Average Size
+ * Max Size
+ * Overwritten Requests
+ * Overruns
+ * Current Size
+ * User Requests
+
+3. **Recursion Timings**
+ * Average recursion processing time
+ * Median recursion processing time
+
+If extended stats are enabled, also provides:
+
+4. **Cache Sizes**
+ * Message Cache
+ * RRset Cache
+ * Infra Cache
+ * DNSSEC Key Cache
+ * DNSCrypt Shared Secret Cache
+ * DNSCrypt Nonce Cache
+
+### configuration
+
+Unbound must be manually configured to enable the remote-control protocol.
+Check the Unbound documentation for info on how to do this.  Additionally,
+if you want to take advantage of the autodetection this plugin offers,
+you will need to make sure your `unbound.conf` file only uses spaces for
+indentation (the default config shipped by most distributions uses tabs
+instead of spaces).
+
+Once you have the Unbound control protocol enabled, you need to make sure
+that either the certificate and key are readable by Netdata (if you're
+using the regular control interface), or that the socket is accessible
+to Netdata (if you're using a UNIX socket for the contorl interface).
+
+By default, for the local system, everything can be auto-detected
+assuming Unbound is configured correctly and has been told to listen
+on the loopback interface or a UNIX socket.  This is done by looking
+up info in the Unbound config file specified by the `ubconf` key.
+
+To enable extended stats for a given job, add `extended: yes` to the
+definition.
+
+You can also enable per-thread charts for a given job by adding
+`per_thread: yes` to the definition.  Note that the numbe rof threads
+is only checked on startup.
+
+A basic local configuration with extended statistics and per-thread
+charts looks like this:
+
+```yaml
+local:
+    ubconf: /etc/unbound/unbound.conf
+    extended: yes
+    per_thread: yes
+```
+
+While it's a bit more complicated to set up correctly, it is recommended
+that you use a UNIX socket as it provides far better performance.
+
+---
diff --git a/collectors/python.d.plugin/unbound/unbound.chart.py b/collectors/python.d.plugin/unbound/unbound.chart.py
new file mode 100644
index 000000000..52fcbf7e2
--- /dev/null
+++ b/collectors/python.d.plugin/unbound/unbound.chart.py
@@ -0,0 +1,275 @@
+# -*- coding: utf-8 -*-
+# Description: unbound netdata python.d module
+# Author: Austin S. Hemmelgarn (Ferroin)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import os
+import sys
+
+from copy import deepcopy
+
+from bases.FrameworkServices.SocketService import SocketService
+from bases.loaders import YamlOrderedLoader
+
+PRECISION = 1000
+
+ORDER = ['queries', 'recursion', 'reqlist']
+
+CHARTS = {
+    'queries': {
+        'options': [None, 'Queries Processed', 'queries', 'Unbound', 'unbound.queries', 'line'],
+        'lines': [
+            ['ratelimit', 'ratelimited', 'absolute', 1, 1],
+            ['cachemiss', 'cache_miss', 'absolute', 1, 1],
+            ['cachehit', 'cache_hit', 'absolute', 1, 1],
+            ['expired', 'expired', 'absolute', 1, 1],
+            ['prefetch', 'prefetched', 'absolute', 1, 1],
+            ['recursive', 'recursive', 'absolute', 1, 1]
+        ]
+    },
+    'recursion': {
+        'options': [None, 'Recursion Timings', 'seconds', 'Unbound', 'unbound.recursion', 'line'],
+        'lines': [
+            ['recursive_avg', 'average', 'absolute', 1, PRECISION],
+            ['recursive_med', 'median', 'absolute', 1, PRECISION]
+        ]
+    },
+    'reqlist': {
+        'options': [None, 'Request List', 'items', 'Unbound', 'unbound.reqlist', 'line'],
+        'lines': [
+            ['reqlist_avg', 'average_size', 'absolute', 1, 1],
+            ['reqlist_max', 'maximum_size', 'absolute', 1, 1],
+            ['reqlist_overwritten', 'overwritten_requests', 'absolute', 1, 1],
+            ['reqlist_exceeded', 'overruns', 'absolute', 1, 1],
+            ['reqlist_current', 'current_size', 'absolute', 1, 1],
+            ['reqlist_user', 'user_requests', 'absolute', 1, 1]
+        ]
+    }
+}
+
+# These get added too if we are told to use extended stats.
+EXTENDED_ORDER = ['cache']
+
+EXTENDED_CHARTS = {
+    'cache': {
+        'options': [None, 'Cache Sizes', 'items', 'Unbound', 'unbound.cache', 'stacked'],
+        'lines': [
+            ['cache_message', 'message_cache', 'absolute', 1, 1],
+            ['cache_rrset', 'rrset_cache', 'absolute', 1, 1],
+            ['cache_infra', 'infra_cache', 'absolute', 1, 1],
+            ['cache_key', 'dnssec_key_cache', 'absolute', 1, 1],
+            ['cache_dnscss', 'dnscrypt_Shared_Secret_cache', 'absolute', 1, 1],
+            ['cache_dnscn', 'dnscrypt_Nonce_cache', 'absolute', 1, 1]
+        ]
+    }
+}
+
+# This is used as a templates for the per-thread charts.
+PER_THREAD_CHARTS = {
+    '_queries': {
+        'options': [None, '{longname} Queries Processed', 'queries', 'Queries Processed',
+                    'unbound.threads.queries', 'line'],
+        'lines': [
+            ['{shortname}_ratelimit', 'ratelimited', 'absolute', 1, 1],
+            ['{shortname}_cachemiss', 'cache_miss', 'absolute', 1, 1],
+            ['{shortname}_cachehit', 'cache_hit', 'absolute', 1, 1],
+            ['{shortname}_expired', 'expired', 'absolute', 1, 1],
+            ['{shortname}_prefetch', 'prefetched', 'absolute', 1, 1],
+            ['{shortname}_recursive', 'recursive', 'absolute', 1, 1]
+        ]
+    },
+    '_recursion': {
+        'options': [None, '{longname} Recursion Timings', 'seconds', 'Recursive Timings',
+                    'unbound.threads.recursion', 'line'],
+        'lines': [
+            ['{shortname}_recursive_avg', 'average', 'absolute', 1, PRECISION],
+            ['{shortname}_recursive_med', 'median', 'absolute', 1, PRECISION]
+        ]
+    },
+    '_reqlist': {
+        'options': [None, '{longname} Request List', 'items', 'Request List', 'unbound.threads.reqlist', 'line'],
+        'lines': [
+            ['{shortname}_reqlist_avg', 'average_size', 'absolute', 1, 1],
+            ['{shortname}_reqlist_max', 'maximum_size', 'absolute', 1, 1],
+            ['{shortname}_reqlist_overwritten', 'overwritten_requests', 'absolute', 1, 1],
+            ['{shortname}_reqlist_exceeded', 'overruns', 'absolute', 1, 1],
+            ['{shortname}_reqlist_current', 'current_size', 'absolute', 1, 1],
+            ['{shortname}_reqlist_user', 'user_requests', 'absolute', 1, 1]
+        ]
+    }
+}
+
+
+# This maps the Unbound stat names to our names and precision requiremnets.
+STAT_MAP = {
+    'total.num.queries_ip_ratelimited': ('ratelimit', 1),
+    'total.num.cachehits': ('cachehit', 1),
+    'total.num.cachemiss': ('cachemiss', 1),
+    'total.num.zero_ttl': ('expired', 1),
+    'total.num.prefetch': ('prefetch', 1),
+    'total.num.recursivereplies': ('recursive', 1),
+    'total.requestlist.avg': ('reqlist_avg', 1),
+    'total.requestlist.max': ('reqlist_max', 1),
+    'total.requestlist.overwritten': ('reqlist_overwritten', 1),
+    'total.requestlist.exceeded': ('reqlist_exceeded', 1),
+    'total.requestlist.current.all': ('reqlist_current', 1),
+    'total.requestlist.current.user': ('reqlist_user', 1),
+    'total.recursion.time.avg': ('recursive_avg', PRECISION),
+    'total.recursion.time.median': ('recursive_med', PRECISION),
+    'msg.cache.count': ('cache_message', 1),
+    'rrset.cache.count': ('cache_rrset', 1),
+    'infra.cache.count': ('cache_infra', 1),
+    'key.cache.count': ('cache_key', 1),
+    'dnscrypt_shared_secret.cache.count': ('cache_dnscss', 1),
+    'dnscrypt_nonce.cache.count': ('cache_dnscn', 1)
+}
+
+# Same as above, but for per-thread stats.
+PER_THREAD_STAT_MAP = {
+    '{shortname}.num.queries_ip_ratelimited': ('{shortname}_ratelimit', 1),
+    '{shortname}.num.cachehits': ('{shortname}_cachehit', 1),
+    '{shortname}.num.cachemiss': ('{shortname}_cachemiss', 1),
+    '{shortname}.num.zero_ttl': ('{shortname}_expired', 1),
+    '{shortname}.num.prefetch': ('{shortname}_prefetch', 1),
+    '{shortname}.num.recursivereplies': ('{shortname}_recursive', 1),
+    '{shortname}.requestlist.avg': ('{shortname}_reqlist_avg', 1),
+    '{shortname}.requestlist.max': ('{shortname}_reqlist_max', 1),
+    '{shortname}.requestlist.overwritten': ('{shortname}_reqlist_overwritten', 1),
+    '{shortname}.requestlist.exceeded': ('{shortname}_reqlist_exceeded', 1),
+    '{shortname}.requestlist.current.all': ('{shortname}_reqlist_current', 1),
+    '{shortname}.requestlist.current.user': ('{shortname}_reqlist_user', 1),
+    '{shortname}.recursion.time.avg': ('{shortname}_recursive_avg', PRECISION),
+    '{shortname}.recursion.time.median': ('{shortname}_recursive_med', PRECISION)
+}
+
+
+# Used to actually generate per-thread charts.
+def _get_perthread_info(thread):
+    sname = 'thread{0}'.format(thread)
+    lname = 'Thread {0}'.format(thread)
+    charts = dict()
+    order = []
+    statmap = dict()
+
+    for item in PER_THREAD_CHARTS:
+        cname = '{0}{1}'.format(sname, item)
+        chart = deepcopy(PER_THREAD_CHARTS[item])
+        chart['options'][1] = chart['options'][1].format(longname=lname)
+
+        for index, line in enumerate(chart['lines']):
+            chart['lines'][index][0] = line[0].format(shortname=sname)
+
+        order.append(cname)
+        charts[cname] = chart
+
+    for key, value in PER_THREAD_STAT_MAP.items():
+        statmap[key.format(shortname=sname)] = (value[0].format(shortname=sname), value[1])
+
+    return (charts, order, statmap)
+
+
+class Service(SocketService):
+    def __init__(self, configuration=None, name=None):
+        # The unbound control protocol is always TLS encapsulated
+        # unless it's used over a UNIX socket, so enable TLS _before_
+        # doing the normal SocketService initialization.
+        configuration['tls'] = True
+        self.port = 8935
+        SocketService.__init__(self, configuration, name)
+        self.ext = self.configuration.get('extended', None)
+        self.ubconf = self.configuration.get('ubconf', None)
+        self.perthread = self.configuration.get('per_thread', False)
+        self.threads = None
+        self.order = deepcopy(ORDER)
+        self.definitions = deepcopy(CHARTS)
+        self.request = 'UBCT1 stats\n'
+        self.statmap = deepcopy(STAT_MAP)
+        self._parse_config()
+        self._auto_config()
+        self.debug('Extended stats: {0}'.format(self.ext))
+        self.debug('Per-thread stats: {0}'.format(self.perthread))
+        if self.ext:
+            self.order = self.order + EXTENDED_ORDER
+            self.definitions.update(EXTENDED_CHARTS)
+        if self.unix_socket:
+            self.debug('Using unix socket: {0}'.format(self.unix_socket))
+        else:
+            self.debug('Connecting to: {0}:{1}'.format(self.host, self.port))
+            self.debug('Using key: {0}'.format(self.key))
+            self.debug('Using certificate: {0}'.format(self.cert))
+
+    def _auto_config(self):
+        if self.ubconf and os.access(self.ubconf, os.R_OK):
+            self.debug('Unbound config: {0}'.format(self.ubconf))
+            conf = YamlOrderedLoader.load_config_from_file(self.ubconf)[0]
+            if self.ext is None:
+                if 'extended-statistics' in conf['server']:
+                    self.ext = conf['server']['extended-statistics']
+            if 'remote-control' in conf:
+                if conf['remote-control'].get('control-use-cert', False):
+                    self.key = self.key or conf['remote-control'].get('control-key-file')
+                    self.cert = self.cert or conf['remote-control'].get('control-cert-file')
+                    self.port = self.port or conf['remote-control'].get('control-port')
+                else:
+                    self.unix_socket = self.unix_socket or conf['remote-control'].get('control-interface')
+        else:
+            self.debug('Unbound configuration not found.')
+        if not self.key:
+            self.key = '/etc/unbound/unbound_control.key'
+        if not self.cert:
+            self.cert = '/etc/unbound/unbound_control.pem'
+        if not self.port:
+            self.port = 8953
+
+    def _generate_perthread_charts(self):
+        tmporder = list()
+        for thread in range(0, self.threads):
+            charts, order, statmap = _get_perthread_info(thread)
+            tmporder.extend(order)
+            self.definitions.update(charts)
+            self.statmap.update(statmap)
+        self.order.extend(sorted(tmporder))
+
+    def check(self):
+        # Check if authentication is working.
+        self._connect()
+        result = bool(self._sock)
+        self._disconnect()
+        # If auth works, and we need per-thread charts, query the server
+        # to see how many threads it's using.  This somewhat abuses the
+        # SocketService API to get the data we need.
+        if result and self.perthread:
+            tmp = self.request
+            if sys.version_info[0] < 3:
+                self.request = 'UBCT1 status\n'
+            else:
+                self.request = b'UBCT1 status\n'
+            raw = self._get_raw_data()
+            for line in raw.splitlines():
+                if line.startswith('threads'):
+                    self.threads = int(line.split()[1])
+                    self._generate_perthread_charts()
+                    break
+            if self.threads is None:
+                self.info('Unable to auto-detect thread counts, disabling per-thread stats.')
+                self.perthread = False
+            self.request = tmp
+        return result
+
+    @staticmethod
+    def _check_raw_data(data):
+        # The server will close the connection when it's done sending
+        # data, so just keep looping until that happens.
+        return False
+
+    def _get_data(self):
+        raw = self._get_raw_data()
+        data = dict()
+        tmp = dict()
+        for line in raw.splitlines():
+            stat = line.split('=')
+            tmp[stat[0]] = stat[1]
+        for item in self.statmap:
+            if item in tmp:
+                data[self.statmap[item][0]] = float(tmp[item]) * self.statmap[item][1]
+        return data
diff --git a/collectors/python.d.plugin/unbound/unbound.conf b/collectors/python.d.plugin/unbound/unbound.conf
new file mode 100644
index 000000000..46c4b097f
--- /dev/null
+++ b/collectors/python.d.plugin/unbound/unbound.conf
@@ -0,0 +1,87 @@
+# netdata python.d.plugin configuration for unbound
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_everye
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# Additionally to the above, unbound also supports the following:
+#
+#    host: localhost          # The host to connect to.
+#    port: 8953               # WHat port to use (defaults to 8953)
+#    socket: /path/to/socket  # A path to a UNIX socket to use instead
+#                             # of a TCP connection
+#    tls_key_file: /path/to/key    # The key file to use for authentication
+#    tls_cert_file: /path/to/key   # The certificate to use for authentication
+#    extended: false          # Whether to collect extended stats or not
+#    per_thread: false        # Whether to show charts for per-thread stats
+#
+# In addition to the above, you can set the following to try and
+# auto-detect most settings based on the unbound configuration:
+#
+#    ubconf: /etc/unbound/unbound.conf
+#
+# Note that the SSL key and certificate need to be readable by the user
+# unbound runs as if you're using the regular control interface.
+# If you're using a UNIX socket, that has to be readable by the netdata user.
+
+# The following should work for most users if they have unbound configured
+# correctly.
+local:
+  ubconf: /etc/unbound/unbound.conf
diff --git a/collectors/python.d.plugin/uwsgi/Makefile.inc b/collectors/python.d.plugin/uwsgi/Makefile.inc
new file mode 100644
index 000000000..75d96de0e
--- /dev/null
+++ b/collectors/python.d.plugin/uwsgi/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += uwsgi/uwsgi.chart.py
+dist_pythonconfig_DATA += uwsgi/uwsgi.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += uwsgi/README.md uwsgi/Makefile.inc
+
diff --git a/collectors/python.d.plugin/uwsgi/README.md b/collectors/python.d.plugin/uwsgi/README.md
new file mode 100644
index 000000000..a062710df
--- /dev/null
+++ b/collectors/python.d.plugin/uwsgi/README.md
@@ -0,0 +1,37 @@
+# uwsgi
+
+Module monitor uwsgi performance metrics.
+
+https://uwsgi-docs.readthedocs.io/en/latest/StatsServer.html
+
+lines are creates dynamically based on how many workers are there
+
+Following charts are drawn:
+
+1. **Requests**
+ * requests per second
+ * transmitted data
+ * average request time
+
+2. **Memory**
+ * rss
+ * vsz
+
+3. **Exceptions**
+4. **Harakiris**
+5. **Respawns**
+
+### configuration
+
+```yaml
+socket:
+  name     : 'local'
+  socket   : '/tmp/stats.socket'
+
+localhost:
+  name     : 'local'
+  host     : 'localhost'
+  port     : 1717
+```
+
+When no configuration file is found, module tries to connect to TCP/IP socket: `localhost:1717`.
diff --git a/collectors/python.d.plugin/uwsgi/uwsgi.chart.py b/collectors/python.d.plugin/uwsgi/uwsgi.chart.py
new file mode 100644
index 000000000..5ebcfb55b
--- /dev/null
+++ b/collectors/python.d.plugin/uwsgi/uwsgi.chart.py
@@ -0,0 +1,183 @@
+# -*- coding: utf-8 -*-
+# Description: uwsgi netdata python.d module
+# Author: Robbert Segeren (robbert-ef)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import json
+from copy import deepcopy
+from bases.FrameworkServices.SocketService import SocketService
+
+# default module values (can be overridden per job in `config`)
+# update_every = 2
+priority = 60000
+retries = 60
+
+ORDER = [
+    'requests',
+    'tx',
+    'avg_rt',
+    'memory_rss',
+    'memory_vsz',
+    'exceptions',
+    'harakiri',
+    'respawn',
+]
+
+DYNAMIC_CHARTS = [
+    'requests',
+    'tx',
+    'avg_rt',
+    'memory_rss',
+    'memory_vsz',
+]
+
+# NOTE: lines are created dynamically in `check()` method
+CHARTS = {
+    'requests': {
+        'options': [None, 'Requests', 'requests/s', 'requests', 'uwsgi.requests', 'stacked'],
+        'lines': [
+            ['requests', 'requests', 'incremental']
+        ]
+    },
+    'tx': {
+        'options': [None, 'Transmitted data', 'KB/s', 'requests', 'uwsgi.tx', 'stacked'],
+        'lines': [
+            ['tx', 'tx', 'incremental']
+        ]
+    },
+    'avg_rt': {
+        'options': [None, 'Average request time', 'ms', 'requests', 'uwsgi.avg_rt', 'line'],
+        'lines': [
+            ['avg_rt', 'avg_rt', 'absolute']
+        ]
+    },
+    'memory_rss': {
+        'options': [None, 'RSS (Resident Set Size)', 'MB', 'memory', 'uwsgi.memory_rss', 'stacked'],
+        'lines': [
+            ['memory_rss', 'memory_rss', 'absolute', 1, 1024 * 1024]
+        ]
+    },
+    'memory_vsz': {
+        'options': [None, 'VSZ (Virtual Memory Size)', 'MB', 'memory', 'uwsgi.memory_vsz', 'stacked'],
+        'lines': [
+            ['memory_vsz', 'memory_vsz', 'absolute', 1, 1024 * 1024]
+        ]
+    },
+    'exceptions': {
+        'options': [None, 'Exceptions', 'exceptions', 'exceptions', 'uwsgi.exceptions', 'line'],
+        'lines': [
+            ['exceptions', 'exceptions', 'incremental']
+        ]
+    },
+    'harakiri': {
+        'options': [None, 'Harakiris', 'harakiris', 'harakiris', 'uwsgi.harakiris', 'line'],
+        'lines': [
+            ['harakiri_count', 'harakiris', 'incremental']
+        ]
+    },
+    'respawn': {
+        'options': [None, 'Respawns', 'respawns', 'respawns', 'uwsgi.respawns', 'line'],
+        'lines': [
+            ['respawn_count', 'respawns', 'incremental']
+        ]
+    },
+}
+
+
+class Service(SocketService):
+    def __init__(self, configuration=None, name=None):
+        super(Service, self).__init__(configuration=configuration, name=name)
+        self.url = self.configuration.get('host', 'localhost')
+        self.port = self.configuration.get('port', 1717)
+        self.order = ORDER
+        self.definitions = deepcopy(CHARTS)
+
+        # Clear dynamic dimensions, these are added during `_get_data()` to allow adding workers at run-time
+        for chart in DYNAMIC_CHARTS:
+            self.definitions[chart]['lines'] = []
+
+        self.last_result = {}
+        self.workers = []
+
+    def read_data(self):
+        """
+        Read data from socket and parse as JSON.
+        :return: (dict) stats
+        """
+        raw_data = self._get_raw_data()
+        if not raw_data:
+            return None
+        try:
+            return json.loads(raw_data)
+        except ValueError as err:
+            self.error(err)
+            return None
+
+    def check(self):
+        """
+        Parse configuration and check if we can read data.
+        :return: boolean
+        """
+        self._parse_config()
+        return bool(self.read_data())
+
+    def add_worker_dimensions(self, key):
+        """
+        Helper to add dimensions for a worker.
+        :param key: (int or str) worker identifier
+        :return:
+        """
+        for chart in DYNAMIC_CHARTS:
+            for line in CHARTS[chart]['lines']:
+                dimension_id = '{}_{}'.format(line[0], key)
+                dimension_name = str(key)
+
+                dimension = [dimension_id, dimension_name] + line[2:]
+                self.charts[chart].add_dimension(dimension)
+
+    @staticmethod
+    def _check_raw_data(data):
+        # The server will close the connection when it's done sending
+        # data, so just keep looping until that happens.
+        return False
+
+    def _get_data(self):
+        """
+        Read data from socket
+        :return: dict
+        """
+        stats = self.read_data()
+        if not stats:
+            return None
+
+        result = {
+            'exceptions': 0,
+            'harakiri_count': 0,
+            'respawn_count': 0,
+        }
+
+        for worker in stats['workers']:
+            key = worker['pid']
+
+            # Add dimensions for new workers
+            if key not in self.workers:
+                self.add_worker_dimensions(key)
+                self.workers.append(key)
+
+            result['requests_{}'.format(key)] = worker['requests']
+            result['tx_{}'.format(key)] = worker['tx']
+            result['avg_rt_{}'.format(key)] = worker['avg_rt']
+
+            # avg_rt is not reset by uwsgi, so reset here
+            if self.last_result.get('requests_{}'.format(key)) == worker['requests']:
+                result['avg_rt_{}'.format(key)] = 0
+
+            result['memory_rss_{}'.format(key)] = worker['rss']
+            result['memory_vsz_{}'.format(key)] = worker['vsz']
+
+            result['exceptions'] += worker['exceptions']
+            result['harakiri_count'] += worker['harakiri_count']
+            result['respawn_count'] += worker['respawn_count']
+
+        self.last_result = result
+        return result
diff --git a/collectors/python.d.plugin/uwsgi/uwsgi.conf b/collectors/python.d.plugin/uwsgi/uwsgi.conf
new file mode 100644
index 000000000..be1c2ada3
--- /dev/null
+++ b/collectors/python.d.plugin/uwsgi/uwsgi.conf
@@ -0,0 +1,94 @@
+# netdata python.d.plugin configuration for uwsgi
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 1
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 1         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# Additionally to the above, uwsgi also supports the following:
+#
+#     socket: 'path/to/uwsgistats.sock'
+#
+#  or
+#     host: 'IP or HOSTNAME' # the host to connect to
+#     port: PORT             # the port to connect to
+#
+# ----------------------------------------------------------------------
+# AUTO-DETECTION JOBS
+# only one of them will run (they have the same name)
+#
+
+socket:
+  name     : 'local'
+  socket   : '/tmp/stats.socket'
+
+localhost:
+  name     : 'local'
+  host     : 'localhost'
+  port     : 1717
+
+localipv4:
+  name     : 'local'
+  host     : '127.0.0.1'
+  port     : 1717
+
+localipv6:
+  name     : 'local'
+  host     : '::1'
+  port     : 1717
diff --git a/collectors/python.d.plugin/varnish/Makefile.inc b/collectors/python.d.plugin/varnish/Makefile.inc
new file mode 100644
index 000000000..2469b0592
--- /dev/null
+++ b/collectors/python.d.plugin/varnish/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += varnish/varnish.chart.py
+dist_pythonconfig_DATA += varnish/varnish.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += varnish/README.md varnish/Makefile.inc
+
diff --git a/collectors/python.d.plugin/varnish/README.md b/collectors/python.d.plugin/varnish/README.md
new file mode 100644
index 000000000..96c7cafaa
--- /dev/null
+++ b/collectors/python.d.plugin/varnish/README.md
@@ -0,0 +1,69 @@
+# varnish
+
+Module uses the `varnishstat` command to provide varnish cache statistics.
+
+It produces:
+
+1. **Connections Statistics** in connections/s
+ * accepted
+ * dropped
+
+2. **Client Requests** in requests/s
+ * received
+
+3. **All History Hit Rate Ratio** in percent
+ * hit
+ * miss
+ * hitpass
+
+4. **Current Poll Hit Rate Ratio** in percent
+ * hit
+ * miss
+ * hitpass
+
+5. **Expired Objects** in expired/s
+ * objects
+
+6. **Least Recently Used Nuked Objects** in nuked/s
+ * objects
+
+
+7. **Number Of Threads In All Pools** in threads
+ * threads
+
+8. **Threads Statistics** in threads/s
+ * created
+ * failed
+ * limited
+
+9. **Current Queue Length** in requests
+ * in queue
+
+10. **Backend Connections Statistics** in connections/s
+ * successful
+ * unhealthy
+ * reused
+ * closed
+ * resycled
+ * failed
+
+10. **Requests To The Backend** in requests/s
+ * received
+
+11. **ESI Statistics** in problems/s
+ * errors
+ * warnings
+
+12. **Memory Usage** in MB
+ * free
+ * allocated
+
+13. **Uptime** in seconds
+ * uptime
+
+
+### configuration
+
+No configuration is needed.
+
+---
diff --git a/python.d/varnish.chart.py b/collectors/python.d.plugin/varnish/varnish.chart.py
index d8145c0b6..d889c2b33 100644
--- a/python.d/varnish.chart.py
+++ b/collectors/python.d.plugin/varnish/varnish.chart.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Description:  varnish netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import re
 
@@ -12,13 +13,22 @@ from bases.FrameworkServices.ExecutableService import ExecutableService
 priority = 60000
 retries = 60
 
-ORDER = ['session_connections', 'client_requests',
-         'all_time_hit_rate', 'current_poll_hit_rate', 'cached_objects_expired', 'cached_objects_nuked',
-         'threads_total', 'threads_statistics', 'threads_queue_len',
-         'backend_connections', 'backend_requests',
-         'esi_statistics',
-         'memory_usage',
-         'uptime']
+ORDER = [
+    'session_connections',
+    'client_requests',
+    'all_time_hit_rate',
+    'current_poll_hit_rate',
+    'cached_objects_expired',
+    'cached_objects_nuked',
+    'threads_total',
+    'threads_statistics',
+    'threads_queue_len',
+    'backend_connections',
+    'backend_requests',
+    'esi_statistics',
+    'memory_usage',
+    'uptime'
+]
 
 CHARTS = {
     'session_connections': {
@@ -213,8 +223,9 @@ class Service(ExecutableService):
 
         data.update(dict((param, value) for _, param, value in server_stats))
 
-        data['memory_allocated'] = data['s0.g_bytes']
-        data['memory_free'] = data['s0.g_space']
+        # varnish 5 uses default.g_bytes and default.g_space
+        data['memory_allocated'] = data.get('s0.g_bytes') or data.get('default.g_bytes')
+        data['memory_free'] = data.get('s0.g_space') or data.get('default.g_space')
 
         return data
 
diff --git a/conf.d/python.d/varnish.conf b/collectors/python.d.plugin/varnish/varnish.conf
index 4b069d514..4b069d514 100644
--- a/conf.d/python.d/varnish.conf
+++ b/collectors/python.d.plugin/varnish/varnish.conf
diff --git a/collectors/python.d.plugin/w1sensor/Makefile.inc b/collectors/python.d.plugin/w1sensor/Makefile.inc
new file mode 100644
index 000000000..bddf146f5
--- /dev/null
+++ b/collectors/python.d.plugin/w1sensor/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += w1sensor/w1sensor.chart.py
+dist_pythonconfig_DATA += w1sensor/w1sensor.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += w1sensor/README.md w1sensor/Makefile.inc
+
diff --git a/collectors/python.d.plugin/w1sensor/README.md b/collectors/python.d.plugin/w1sensor/README.md
new file mode 100644
index 000000000..b18f08351
--- /dev/null
+++ b/collectors/python.d.plugin/w1sensor/README.md
@@ -0,0 +1,13 @@
+# w1sensor
+
+Data from 1-Wire sensors.
+On Linux these are supported by the wire, w1_gpio, and w1_therm modules.
+Currently temperature sensors are supported and automatically detected.
+
+Charts are created dynamically based on the number of detected sensors.
+
+### configuration
+
+For detailed configuration information please read [`w1sensor.conf`](w1sensor.conf) file.
+
+---
diff --git a/collectors/python.d.plugin/w1sensor/w1sensor.chart.py b/collectors/python.d.plugin/w1sensor/w1sensor.chart.py
new file mode 100644
index 000000000..493c4a135
--- /dev/null
+++ b/collectors/python.d.plugin/w1sensor/w1sensor.chart.py
@@ -0,0 +1,93 @@
+# -*- coding: utf-8 -*-
+# Description: 1-wire temperature monitor netdata python.d module
+# Author: Diomidis Spinellis <http://www.spinellis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import os
+import re
+from bases.FrameworkServices.SimpleService import SimpleService
+
+# default module values (can be overridden per job in `config`)
+update_every = 5
+
+# Location where 1-Wire devices can be found
+W1_DIR = '/sys/bus/w1/devices/'
+
+# Lines matching the following regular expression contain a temperature value
+RE_TEMP = re.compile(r' t=(\d+)')
+
+ORDER = ['temp']
+
+CHARTS = {
+    'temp': {
+        'options': [None, '1-Wire Temperature Sensor', 'Celsius', 'Temperature', 'w1sensor.temp', 'line'],
+        'lines': []
+    }
+}
+
+# Known and supported family members
+# Based on linux/drivers/w1/w1_family.h and w1/slaves/w1_therm.c
+THERM_FAMILY = {
+    '10': 'W1_THERM_DS18S20',
+    '22': 'W1_THERM_DS1822',
+    '28': 'W1_THERM_DS18B20',
+    '3b': 'W1_THERM_DS1825',
+    '42': 'W1_THERM_DS28EA00',
+}
+
+
+class Service(SimpleService):
+    """Provide netdata service for 1-Wire sensors"""
+    def __init__(self, configuration=None, name=None):
+        SimpleService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+        self.probes = []
+
+    def check(self):
+        """Auto-detect available 1-Wire sensors, setting line definitions
+        and probes to be monitored."""
+        try:
+            file_names = os.listdir(W1_DIR)
+        except OSError as err:
+            self.error(err)
+            return False
+
+        lines = []
+        for file_name in file_names:
+            if file_name[2] != '-':
+                continue
+            if not file_name[0:2] in THERM_FAMILY:
+                continue
+
+            self.probes.append(file_name)
+            identifier = file_name[3:]
+            name = identifier
+            config_name = self.configuration.get('name_' + identifier)
+            if config_name:
+                name = config_name
+            lines.append(['w1sensor_temp_' + identifier, name, 'absolute',
+                          1, 10])
+        self.definitions['temp']['lines'] = lines
+        return len(self.probes) > 0
+
+    def get_data(self):
+        """Return data read from sensors."""
+        data = dict()
+
+        for file_name in self.probes:
+            file_path = W1_DIR + file_name + '/w1_slave'
+            identifier = file_name[3:]
+            try:
+                with open(file_path, 'r') as device_file:
+                    for line in device_file:
+                        matched = RE_TEMP.search(line)
+                        if matched:
+                            # Round to one decimal digit to filter-out noise
+                            value = round(int(matched.group(1)) / 1000., 1)
+                            value = int(value * 10)
+                            data['w1sensor_temp_' + identifier] = value
+            except (OSError, IOError) as err:
+                self.error(err)
+                continue
+        return data or None
diff --git a/collectors/python.d.plugin/w1sensor/w1sensor.conf b/collectors/python.d.plugin/w1sensor/w1sensor.conf
new file mode 100644
index 000000000..a4aed8dd7
--- /dev/null
+++ b/collectors/python.d.plugin/w1sensor/w1sensor.conf
@@ -0,0 +1,74 @@
+# netdata python.d.plugin configuration for w1sensor
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+# update_every: 5
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 60
+
+# autodetection_retry sets the job re-check interval in seconds.
+# The job is not deleted if check fails.
+# Attempts to start the job are made once every autodetection_retry.
+# This feature is disabled by default.
+# autodetection_retry: 0
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname            # the JOB's name as it will appear at the
+#                             # dashboard (by default is the job_name)
+#                             # JOBs sharing a name are mutually exclusive
+#     update_every: 5         # the JOB's data collection frequency
+#     priority: 60000         # the JOB's order on the dashboard
+#     retries: 60             # the JOB's number of restoration attempts
+#     autodetection_retry: 0  # the JOB's re-check interval in seconds
+#
+# Additionally to the above, example also supports the following:
+#
+# name_<1-Wire id>: '<human readable name>'
+# This allows associating a human readable name with a sensor's 1-Wire
+# identifier. Example:
+# name_00000022276e: 'Machine room'
+# name_00000022298f: 'Rack 12'
+#
+# ----------------------------------------------------------------------
+# AUTO-DETECTION JOBS
+# only one of them will run (they have the same name)
diff --git a/collectors/python.d.plugin/web_log/Makefile.inc b/collectors/python.d.plugin/web_log/Makefile.inc
new file mode 100644
index 000000000..893115992
--- /dev/null
+++ b/collectors/python.d.plugin/web_log/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_python_DATA       += web_log/web_log.chart.py
+dist_pythonconfig_DATA += web_log/web_log.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += web_log/README.md web_log/Makefile.inc
+
diff --git a/collectors/python.d.plugin/web_log/README.md b/collectors/python.d.plugin/web_log/README.md
new file mode 100644
index 000000000..6e8ea1dd5
--- /dev/null
+++ b/collectors/python.d.plugin/web_log/README.md
@@ -0,0 +1,64 @@
+# web_log
+
+Tails the apache/nginx/lighttpd/gunicorn log files to collect real-time web-server statistics.
+
+It produces following charts:
+
+1. **Response by type** requests/s
+ * success (1xx, 2xx, 304)
+ * error (5xx)
+ * redirect (3xx except 304)
+ * bad (4xx)
+ * other (all other responses)
+
+2. **Response by code family** requests/s
+ * 1xx (informational)
+ * 2xx (successful)
+ * 3xx (redirect)
+ * 4xx (bad)
+ * 5xx (internal server errors)
+ * other (non-standart responses)
+ * unmatched (the lines in the log file that are not matched)
+
+3. **Detailed Response Codes** requests/s (number of responses for each response code family individually)
+
+4. **Bandwidth** KB/s
+ * received (bandwidth of requests)
+ * send (bandwidth of responses)
+
+5. **Timings** ms (request processing time)
+ * min (bandwidth of requests)
+ * max (bandwidth of responses)
+ * average (bandwidth of responses)
+
+6. **Request per url** requests/s (configured by user)
+
+7. **Http Methods** requests/s (requests per http method)
+
+8. **Http Versions** requests/s (requests per http version)
+
+9. **IP protocols** requests/s (requests per ip protocol version)
+
+10. **Current Poll Unique Client IPs** unique ips/s (unique client IPs per data collection iteration)
+
+11. **All Time Unique Client IPs** unique ips/s (unique client IPs since the last restart of netdata)
+
+
+### configuration
+
+```yaml
+nginx_log:
+  name  : 'nginx_log'
+  path  : '/var/log/nginx/access.log'
+
+apache_log:
+  name  : 'apache_log'
+  path  : '/var/log/apache/other_vhosts_access.log'
+  categories:
+      cacti : 'cacti.*'
+      observium : 'observium'
+```
+
+Module has preconfigured jobs for nginx, apache and gunicorn on various distros.
+
+---
diff --git a/python.d/web_log.chart.py b/collectors/python.d.plugin/web_log/web_log.chart.py
index be9baba92..20e15f4cb 100644
--- a/python.d/web_log.chart.py
+++ b/collectors/python.d.plugin/web_log/web_log.chart.py
@@ -1,11 +1,11 @@
 # -*- coding: utf-8 -*-
 # Description: web log netdata python.d module
 # Author: l2isbad
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 import bisect
 import re
 import os
-import sys
 
 from collections import namedtuple, defaultdict
 from copy import deepcopy
@@ -16,21 +16,54 @@ except ImportError:
     from itertools import ifilter as filter
     from itertools import ifilterfalse as filterfalse
 
+try:
+    from sys import maxint
+except ImportError:
+    from sys import maxsize as maxint
+
 from bases.collection import read_last_line
 from bases.FrameworkServices.LogService import LogService
 
 
 ORDER_APACHE_CACHE = ['apache_cache']
 
-ORDER_WEB = ['response_statuses', 'response_codes', 'bandwidth',
-             'response_time', 'response_time_hist', 'response_time_upstream', 'response_time_upstream_hist',
-             'requests_per_url', 'requests_per_user_defined', 'http_method', 'http_version',
-             'requests_per_ipproto', 'clients', 'clients_all']
-
-ORDER_SQUID = ['squid_response_statuses', 'squid_response_codes', 'squid_detailed_response_codes',
-               'squid_method', 'squid_mime_type', 'squid_hier_code', 'squid_transport_methods',
-               'squid_transport_errors', 'squid_code', 'squid_handling_opts', 'squid_object_types',
-               'squid_cache_events', 'squid_bytes', 'squid_duration', 'squid_clients', 'squid_clients_all']
+ORDER_WEB = [
+    'response_statuses',
+    'response_codes',
+    'bandwidth',
+    'response_time',
+    'response_time_hist',
+    'response_time_upstream',
+    'response_time_upstream_hist',
+    'requests_per_url',
+    'requests_per_user_defined',
+    'http_method',
+    'vhost',
+    'port',
+    'http_version',
+    'requests_per_ipproto',
+    'clients',
+    'clients_all'
+]
+
+ORDER_SQUID = [
+    'squid_response_statuses',
+    'squid_response_codes',
+    'squid_detailed_response_codes',
+    'squid_method',
+    'squid_mime_type',
+    'squid_hier_code',
+    'squid_transport_methods',
+    'squid_transport_errors',
+    'squid_code',
+    'squid_handling_opts',
+    'squid_object_types',
+    'squid_cache_events',
+    'squid_bytes',
+    'squid_duration',
+    'squid_clients',
+    'squid_clients_all'
+]
 
 CHARTS_WEB = {
     'response_codes': {
@@ -43,24 +76,27 @@ CHARTS_WEB = {
             ['1xx', None, 'incremental'],
             ['0xx', 'other', 'incremental'],
             ['unmatched', None, 'incremental']
-        ]},
+        ]
+    },
     'bandwidth': {
         'options': [None, 'Bandwidth', 'kilobits/s', 'bandwidth', 'web_log.bandwidth', 'area'],
         'lines': [
             ['resp_length', 'received', 'incremental', 8, 1000],
             ['bytes_sent', 'sent', 'incremental', -8, 1000]
-        ]},
+        ]
+    },
     'response_time': {
         'options': [None, 'Processing Time', 'milliseconds', 'timings', 'web_log.response_time', 'area'],
         'lines': [
             ['resp_time_min', 'min', 'incremental', 1, 1000],
             ['resp_time_max', 'max', 'incremental', 1, 1000],
             ['resp_time_avg', 'avg', 'incremental', 1, 1000]
-        ]},
+        ]
+    },
     'response_time_hist': {
         'options': [None, 'Processing Time Histogram', 'requests/s', 'timings', 'web_log.response_time_hist', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'response_time_upstream': {
         'options': [None, 'Processing Time Upstream', 'milliseconds', 'timings',
                     'web_log.response_time_upstream', 'area'],
@@ -68,62 +104,80 @@ CHARTS_WEB = {
             ['resp_time_upstream_min', 'min', 'incremental', 1, 1000],
             ['resp_time_upstream_max', 'max', 'incremental', 1, 1000],
             ['resp_time_upstream_avg', 'avg', 'incremental', 1, 1000]
-        ]},
+        ]
+    },
     'response_time_upstream_hist': {
         'options': [None, 'Processing Time Histogram', 'requests/s', 'timings',
                     'web_log.response_time_upstream_hist', 'line'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'clients': {
         'options': [None, 'Current Poll Unique Client IPs', 'unique ips', 'clients', 'web_log.clients', 'stacked'],
         'lines': [
             ['unique_cur_ipv4', 'ipv4', 'incremental', 1, 1],
             ['unique_cur_ipv6', 'ipv6', 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'clients_all': {
         'options': [None, 'All Time Unique Client IPs', 'unique ips', 'clients', 'web_log.clients_all', 'stacked'],
         'lines': [
             ['unique_tot_ipv4', 'ipv4', 'absolute', 1, 1],
             ['unique_tot_ipv6', 'ipv6', 'absolute', 1, 1]
-        ]},
+        ]
+    },
     'http_method': {
         'options': [None, 'Requests Per HTTP Method', 'requests/s', 'http methods', 'web_log.http_method', 'stacked'],
         'lines': [
             ['GET', 'GET', 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'http_version': {
         'options': [None, 'Requests Per HTTP Version', 'requests/s', 'http versions',
                     'web_log.http_version', 'stacked'],
-        'lines': []},
+        'lines': []
+    },
     'requests_per_ipproto': {
         'options': [None, 'Requests Per IP Protocol', 'requests/s', 'ip protocols', 'web_log.requests_per_ipproto',
                     'stacked'],
         'lines': [
             ['req_ipv4', 'ipv4', 'incremental', 1, 1],
             ['req_ipv6', 'ipv6', 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'response_statuses': {
-        'options': [None, 'Response Statuses', 'requests/s', 'responses', 'web_log.response_statuses',
-                    'stacked'],
+        'options': [None, 'Response Statuses', 'requests/s', 'responses', 'web_log.response_statuses', 'stacked'],
         'lines': [
             ['successful_requests', 'success', 'incremental', 1, 1],
             ['server_errors', 'error', 'incremental', 1, 1],
             ['redirects', 'redirect', 'incremental', 1, 1],
             ['bad_requests', 'bad', 'incremental', 1, 1],
             ['other_requests', 'other', 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'requests_per_url': {
-        'options': [None, 'Requests Per Url', 'requests/s', 'urls', 'web_log.requests_per_url',
-                    'stacked'],
+        'options': [None, 'Requests Per Url', 'requests/s', 'urls', 'web_log.requests_per_url', 'stacked'],
         'lines': [
             ['url_pattern_other', 'other', 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'requests_per_user_defined': {
         'options': [None, 'Requests Per User Defined Pattern', 'requests/s', 'user defined',
                     'web_log.requests_per_user_defined', 'stacked'],
         'lines': [
             ['user_pattern_other', 'other', 'incremental', 1, 1]
-        ]}
+        ]
+    },
+    'port': {
+        'options': [None, 'Requests Per Port', 'requests/s', 'port', 'web_log.port', 'stacked'],
+        'lines': [
+            ['port_80', 'http', 'incremental', 1, 1],
+            ['port_443', 'https', 'incremental', 1, 1]
+        ]
+    },
+    'vhost': {
+        'options': [None, 'Requests Per Vhost', 'requests/s', 'vhost', 'web_log.vhost', 'stacked'],
+        'lines': []
+    }
 }
 
 CHARTS_APACHE_CACHE = {
@@ -131,10 +185,11 @@ CHARTS_APACHE_CACHE = {
         'options': [None, 'Apache Cached Responses', 'percent cached', 'cached', 'web_log.apache_cache_cache',
                     'stacked'],
         'lines': [
-            ["hit", 'cache', "percentage-of-absolute-row"],
-            ["miss", None, "percentage-of-absolute-row"],
-            ["other", None, "percentage-of-absolute-row"]
-        ]}
+            ['hit', 'cache', 'percentage-of-absolute-row'],
+            ['miss', None, 'percentage-of-absolute-row'],
+            ['other', None, 'percentage-of-absolute-row']
+        ]
+    }
 }
 
 CHARTS_SQUID = {
@@ -145,13 +200,15 @@ CHARTS_SQUID = {
             ['duration_min', 'min', 'incremental', 1, 1000],
             ['duration_max', 'max', 'incremental', 1, 1000],
             ['duration_avg', 'avg', 'incremental', 1, 1000]
-        ]},
+        ]
+    },
     'squid_bytes': {
         'options': [None, 'Amount Of Data Delivered To The Clients',
                     'kilobits/s', 'squid_bandwidth', 'web_log.squid_bytes', 'area'],
         'lines': [
             ['bytes', 'sent', 'incremental', 8, 1000]
-        ]},
+        ]
+    },
     'squid_response_statuses': {
         'options': [None, 'Response Statuses', 'responses/s', 'squid_responses', 'web_log.squid_response_statuses',
                     'stacked'],
@@ -161,7 +218,8 @@ CHARTS_SQUID = {
             ['redirects', 'redirect', 'incremental', 1, 1],
             ['bad_requests', 'bad', 'incremental', 1, 1],
             ['other_requests', 'other', 'incremental', 1, 1]
-        ]},
+        ]
+    },
     'squid_response_codes': {
         'options': [None, 'Response Codes', 'responses/s', 'squid_responses',
                     'web_log.squid_response_codes', 'stacked'],
@@ -174,89 +232,113 @@ CHARTS_SQUID = {
             ['0xx', None, 'incremental'],
             ['other', None, 'incremental'],
             ['unmatched', None, 'incremental']
-        ]},
+        ]
+    },
     'squid_code': {
         'options': [None, 'Responses Per Cache Result Of The Request',
                     'requests/s', 'squid_squid_cache', 'web_log.squid_code', 'stacked'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'squid_detailed_response_codes': {
         'options': [None, 'Detailed Response Codes',
                     'responses/s', 'squid_responses', 'web_log.squid_detailed_response_codes', 'stacked'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'squid_hier_code': {
         'options': [None, 'Responses Per Hierarchy Code',
                     'requests/s', 'squid_hierarchy', 'web_log.squid_hier_code', 'stacked'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'squid_method': {
         'options': [None, 'Requests Per Method',
                     'requests/s', 'squid_requests', 'web_log.squid_method', 'stacked'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'squid_mime_type': {
         'options': [None, 'Requests Per MIME Type',
                     'requests/s', 'squid_requests', 'web_log.squid_mime_type', 'stacked'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'squid_clients': {
         'options': [None, 'Current Poll Unique Client IPs', 'unique ips', 'squid_clients',
                     'web_log.squid_clients', 'stacked'],
         'lines': [
             ['unique_ipv4', 'ipv4', 'incremental'],
             ['unique_ipv6', 'ipv6', 'incremental']
-        ]},
+        ]
+    },
     'squid_clients_all': {
         'options': [None, 'All Time Unique Client IPs', 'unique ips', 'squid_clients',
                     'web_log.squid_clients_all', 'stacked'],
         'lines': [
             ['unique_tot_ipv4', 'ipv4', 'absolute'],
             ['unique_tot_ipv6', 'ipv6', 'absolute']
-        ]},
+        ]
+    },
     'squid_transport_methods': {
         'options': [None, 'Transport Methods', 'requests/s', 'squid_squid_transport',
                     'web_log.squid_transport_methods', 'stacked'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'squid_transport_errors': {
         'options': [None, 'Transport Errors', 'requests/s', 'squid_squid_transport',
                     'web_log.squid_transport_errors', 'stacked'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'squid_handling_opts': {
         'options': [None, 'Handling Opts', 'requests/s', 'squid_squid_cache',
                     'web_log.squid_handling_opts', 'stacked'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'squid_object_types': {
         'options': [None, 'Object Types', 'objects/s', 'squid_squid_cache',
                     'web_log.squid_object_types', 'stacked'],
-        'lines': [
-        ]},
+        'lines': []
+    },
     'squid_cache_events': {
         'options': [None, 'Cache Events', 'events/s', 'squid_squid_cache',
                     'web_log.squid_cache_events', 'stacked'],
-        'lines': [
-        ]}
+        'lines': []
+    }
 }
 
 NAMED_PATTERN = namedtuple('PATTERN', ['description', 'func'])
 
 DET_RESP_AGGR = ['', '_1xx', '_2xx', '_3xx', '_4xx', '_5xx', '_Other']
 
-SQUID_CODES = dict(TCP='squid_transport_methods', UDP='squid_transport_methods', NONE='squid_transport_methods',
-                   CLIENT='squid_handling_opts', IMS='squid_handling_opts', ASYNC='squid_handling_opts',
-                   SWAPFAIL='squid_handling_opts', REFRESH='squid_handling_opts', SHARED='squid_handling_opts',
-                   REPLY='squid_handling_opts', NEGATIVE='squid_object_types', STALE='squid_object_types',
-                   OFFLINE='squid_object_types', INVALID='squid_object_types', FAIL='squid_object_types',
-                   MODIFIED='squid_object_types', UNMODIFIED='squid_object_types', REDIRECT='squid_object_types',
-                   HIT='squid_cache_events', MEM='squid_cache_events', MISS='squid_cache_events',
-                   DENIED='squid_cache_events', NOFETCH='squid_cache_events', TUNNEL='squid_cache_events',
-                   ABORTED='squid_transport_errors', TIMEOUT='squid_transport_errors')
+SQUID_CODES = {
+    'TCP': 'squid_transport_methods',
+    'UDP': 'squid_transport_methods',
+    'NONE': 'squid_transport_methods',
+    'CLIENT': 'squid_handling_opts',
+    'IMS': 'squid_handling_opts',
+    'ASYNC': 'squid_handling_opts',
+    'SWAPFAIL': 'squid_handling_opts',
+    'REFRESH': 'squid_handling_opts',
+    'SHARED': 'squid_handling_opts',
+    'REPLY': 'squid_handling_opts',
+    'NEGATIVE': 'squid_object_types',
+    'STALE': 'squid_object_types',
+    'OFFLINE': 'squid_object_types',
+    'INVALID': 'squid_object_types',
+    'FAIL': 'squid_object_types',
+    'MODIFIED': 'squid_object_types',
+    'UNMODIFIED': 'squid_object_types',
+    'REDIRECT': 'squid_object_types',
+    'HIT': 'squid_cache_events',
+    'MEM': 'squid_cache_events',
+    'MISS': 'squid_cache_events',
+    'DENIED': 'squid_cache_events',
+    'NOFETCH': 'squid_cache_events',
+    'TUNNEL': 'squid_cache_events',
+    'ABORTED': 'squid_transport_errors',
+    'TIMEOUT': 'squid_transport_errors'
+}
 
 REQUEST_REGEX = re.compile(r'(?P<method>[A-Z]+) (?P<url>[^ ]+) [A-Z]+/(?P<http_version>\d(?:.\d)?)')
 
+MIME_TYPES = ['application', 'audio', 'example', 'font', 'image', 'message', 'model', 'multipart', 'text', 'video']
+
 
 class Service(LogService):
     def __init__(self, configuration=None, name=None):
@@ -283,7 +365,7 @@ class Service(LogService):
         log_types = dict(web=Web, apache_cache=ApacheCache, squid=Squid)
 
         if log_type not in log_types:
-            self.error("bad log type {log_type}. Supported types: {types}".format(log_type=log_type,
+            self.error('bad log type {log_type}. Supported types: {types}'.format(log_type=log_type,
                                                                                   types=log_types.keys()))
             return False
 
@@ -317,12 +399,35 @@ class Web:
         self.definitions = deepcopy(CHARTS_WEB)
         self.pre_filter = check_patterns('filter', self.configuration.get('filter'))
         self.storage = dict()
-        self.data = {'bytes_sent': 0, 'resp_length': 0, 'resp_time_min': 0, 'resp_time_max': 0,
-                     'resp_time_avg': 0, 'resp_time_upstream_min': 0, 'resp_time_upstream_max': 0,
-                     'resp_time_upstream_avg': 0, 'unique_cur_ipv4': 0, 'unique_cur_ipv6': 0, '2xx': 0,
-                     '5xx': 0, '3xx': 0, '4xx': 0, '1xx': 0, '0xx': 0, 'unmatched': 0, 'req_ipv4': 0,
-                     'req_ipv6': 0, 'unique_tot_ipv4': 0, 'unique_tot_ipv6': 0, 'successful_requests': 0,
-                     'redirects': 0, 'bad_requests': 0, 'server_errors': 0, 'other_requests': 0, 'GET': 0}
+        self.data = {
+            'bytes_sent': 0,
+            'resp_length': 0,
+            'resp_time_min': 0,
+            'resp_time_max': 0,
+            'resp_time_avg': 0,
+            'resp_time_upstream_min': 0,
+            'resp_time_upstream_max': 0,
+            'resp_time_upstream_avg': 0,
+            'unique_cur_ipv4': 0,
+            'unique_cur_ipv6': 0,
+            '2xx': 0,
+            '5xx': 0,
+            '3xx': 0,
+            '4xx': 0,
+            '1xx': 0,
+            '0xx': 0,
+            'unmatched': 0,
+            'req_ipv4': 0,
+            'req_ipv6': 0,
+            'unique_tot_ipv4': 0,
+            'unique_tot_ipv6': 0,
+            'successful_requests': 0,
+            'redirects': 0,
+            'bad_requests': 0,
+            'server_errors': 0,
+            'other_requests': 0,
+            'GET': 0
+        }
 
     def __getattr__(self, item):
         return getattr(self.service, item)
@@ -367,21 +472,21 @@ class Web:
         histogram = self.configuration.get('histogram', None)
         if isinstance(histogram, list):
             self.storage['bucket_index'] = histogram[:]
-            self.storage['bucket_index'].append(sys.maxint)
+            self.storage['bucket_index'].append(maxint)
             self.storage['buckets'] = [0] * (len(histogram) + 1)
             self.storage['upstream_buckets'] = [0] * (len(histogram) + 1)
             hist_lines = self.definitions['response_time_hist']['lines']
             upstream_hist_lines = self.definitions['response_time_upstream_hist']['lines']
             for i, le in enumerate(histogram):
-                hist_key = "response_time_hist_%d" % i
-                upstream_hist_key = "response_time_upstream_hist_%d" % i
+                hist_key = 'response_time_hist_%d' % i
+                upstream_hist_key = 'response_time_upstream_hist_%d' % i
                 hist_lines.append([hist_key, str(le), 'incremental', 1, 1])
                 upstream_hist_lines.append([upstream_hist_key, str(le), 'incremental', 1, 1])
 
-            hist_lines.append(["response_time_hist_%d" % len(histogram), '+Inf', 'incremental', 1, 1])
-            upstream_hist_lines.append(["response_time_upstream_hist_%d" % len(histogram), '+Inf', 'incremental', 1, 1])
+            hist_lines.append(['response_time_hist_%d' % len(histogram), '+Inf', 'incremental', 1, 1])
+            upstream_hist_lines.append(['response_time_upstream_hist_%d' % len(histogram), '+Inf', 'incremental', 1, 1])
         elif histogram is not None:
-            self.error("expect histogram list, but was {0}".format(type(histogram)))
+            self.error('expect histogram list, but was {0}'.format(type(histogram)))
 
         if not self.configuration.get('all_time', True):
             self.order.remove('clients_all')
@@ -395,10 +500,11 @@ class Web:
 
             for code in codes:
                 self.order.append('detailed_response_codes%s' % code)
-                self.definitions['detailed_response_codes%s' % code] \
-                    = {'options': [None, 'Detailed Response Codes %s' % code[1:], 'requests/s', 'responses',
-                                   'web_log.detailed_response_codes%s' % code, 'stacked'],
-                       'lines': []}
+                self.definitions['detailed_response_codes%s' % code] = {
+                    'options': [None, 'Detailed Response Codes %s' % code[1:], 'requests/s', 'responses',
+                                'web_log.detailed_response_codes%s' % code, 'stacked'],
+                    'lines': []
+                }
 
         # Add 'requests_per_url' chart if specified in the configuration
         if self.storage['url_pattern']:
@@ -499,8 +605,8 @@ class Web:
             buckets = self.storage['buckets']
             upstream_buckets = self.storage['upstream_buckets']
             for i in range(0, len(self.storage['bucket_index'])):
-                hist_key = "response_time_hist_%d" % i
-                upstream_hist_key = "response_time_upstream_hist_%d" % i
+                hist_key = 'response_time_hist_%d' % i
+                upstream_hist_key = 'response_time_upstream_hist_%d' % i
                 self.data[hist_key] = buckets[i]
                 self.data[upstream_hist_key] = upstream_buckets[i]
 
@@ -596,7 +702,7 @@ class Web:
         We are here only if "custom_log_format" is in logs. We need to make sure:
         1. "custom_log_format" is a dict
         2. "pattern" in "custom_log_format" and pattern is <str> instance
-        3. if "time_multiplier" is in "custom_log_format" it must be <int> instance
+        3. if "time_multiplier" is in "custom_log_format" it must be <int> or <float> instance
 
         If all parameters is ok we need to make sure:
         1. Pattern search is success
@@ -623,8 +729,8 @@ class Web:
 
         resp_time_func = self.configuration.get('custom_log_format', dict()).get('time_multiplier') or 0
 
-        if not isinstance(resp_time_func, int):
-            return find_regex_return(msg='Custom log: "time_multiplier" is not an integer')
+        if not isinstance(resp_time_func, (int, float)):
+            return find_regex_return(msg='Custom log: "time_multiplier" is not an integer or a float')
 
         try:
             regex = re.compile(pattern)
@@ -701,6 +807,23 @@ class Web:
                                                            'incremental'])
                 self.data[dim_id] = 0
             self.data[dim_id] += 1
+        # requests per port number
+        if match_dict.get('port'):
+            if match_dict['port'] not in self.data:
+                self.charts['port'].add_dimension([match_dict['port'],
+                                                   match_dict['port'],
+                                                   'incremental'])
+                self.data[match_dict['port']] = 0
+            self.data[match_dict['port']] += 1
+        # requests per vhost
+        if match_dict.get('vhost'):
+            dim_id = match_dict['vhost'].replace('.', '_')
+            if dim_id not in self.data:
+                self.charts['vhost'].add_dimension([dim_id,
+                                                   match_dict['vhost'],
+                                                   'incremental'])
+                self.data[dim_id] = 0
+            self.data[dim_id] += 1
 
     def get_data_per_response_codes_detailed(self, code):
         """
@@ -788,12 +911,29 @@ class Squid:
         self.definitions = CHARTS_SQUID
         self.pre_filter = check_patterns('filter', self.configuration.get('filter'))
         self.storage = dict()
-        self.data = {'duration_max': 0, 'duration_avg': 0, 'duration_min': 0, 'bytes': 0,
-                     '0xx': 0, '1xx': 0, '2xx': 0, '3xx': 0, '4xx': 0, '5xx': 0,
-                     'other': 0, 'unmatched': 0, 'unique_ipv4': 0, 'unique_ipv6': 0,
-                     'unique_tot_ipv4': 0, 'unique_tot_ipv6': 0, 'successful_requests': 0,
-                     'redirects': 0, 'bad_requests': 0, 'server_errors': 0, 'other_requests': 0
-                     }
+        self.data = {
+            'duration_max': 0,
+            'duration_avg': 0,
+            'duration_min': 0,
+            'bytes': 0,
+            '0xx': 0,
+            '1xx': 0,
+            '2xx': 0,
+            '3xx': 0,
+            '4xx': 0,
+            '5xx': 0,
+            'other': 0,
+            'unmatched': 0,
+            'unique_ipv4': 0,
+            'unique_ipv6': 0,
+            'unique_tot_ipv4': 0,
+            'unique_tot_ipv6': 0,
+            'successful_requests': 0,
+            'redirects': 0,
+            'bad_requests': 0,
+            'server_errors': 0,
+            'other_requests': 0
+        }
 
     def __getattr__(self, item):
         return getattr(self.service, item)
@@ -811,30 +951,35 @@ class Squid:
                                            r' (?P<method>[A-Z_]+)'
                                            r' (?P<url>[^ ]+)'
                                            r' (?P<user>[^ ]+)'
-                                           r' (?P<hier_code>[A-Z_]+)/[\da-f.:-]+'
-                                           r' (?P<mime_type>[^\n]+)')
+                                           r' (?P<hier_code>[A-Z_]+)/[\da-z.:-]+'
+                                           r' (?P<mime_type>[A-Za-z-]*)')
 
         match = self.storage['regex'].search(last_line)
         if not match:
             self.error('Regex not matches (%s)' % self.storage['regex'].pattern)
             return False
         self.storage['dynamic'] = {
-            'http_code':
-                {'chart': 'squid_detailed_response_codes',
+            'http_code': {
+                 'chart': 'squid_detailed_response_codes',
                  'func_dim_id': None,
-                 'func_dim': None},
+                 'func_dim': None
+            },
             'hier_code': {
                 'chart': 'squid_hier_code',
                 'func_dim_id': None,
-                'func_dim': lambda v: v.replace('HIER_', '')},
+                'func_dim': lambda v: v.replace('HIER_', '')
+            },
             'method': {
                 'chart': 'squid_method',
                 'func_dim_id': None,
-                'func_dim': None},
+                'func_dim': None
+            },
             'mime_type': {
                 'chart': 'squid_mime_type',
-                'func_dim_id': lambda v: v.split('/')[0],
-                'func_dim': None}}
+                'func_dim_id': lambda v: str.lower(v) if str.lower(v) in MIME_TYPES else 'unknown',
+                'func_dim': None
+            }
+        }
         if not self.configuration.get('all_time', True):
             self.order.remove('squid_clients_all')
         return True
@@ -951,6 +1096,7 @@ def get_timings(timings, time):
     timings['summary'] += time
     timings['count'] += 1
 
+
 def get_hist(index, buckets, time):
     """
     :param index:   histogram index (Ex. [10, 50, 100, 150, ...])
@@ -964,6 +1110,7 @@ def get_hist(index, buckets, time):
         else:
             break
 
+
 def address_not_in_pool(pool, address, pool_size):
     """
     :param pool: list of ip addresses
diff --git a/conf.d/python.d/web_log.conf b/collectors/python.d.plugin/web_log/web_log.conf
index c185f8d85..a67957aef 100644
--- a/conf.d/python.d/web_log.conf
+++ b/collectors/python.d.plugin/web_log/web_log.conf
@@ -84,7 +84,7 @@
 #          stub_status: 'stub_status'     # name(dimension): REGEX to match
 #     custom_log_format:                  # define a custom log format
 #          pattern: '(?P<address>[\da-f.:]+) -.*?"(?P<method>[A-Z]+) (?P<url>.*?)" (?P<code>[1-9]\d{2}) (?P<bytes_sent>\d+) (?P<resp_length>\d+) (?P<resp_time>\d+\.\d+) '
-#          time_multiplier: 1000000       # type <int> - convert time to microseconds
+#          time_multiplier: 1000000       # type <int>/<float> - convert time to microseconds
 #     histogram: [1,3,10,30,100, ...]      # type list of int - Cumulative histogram of response time in milli seconds
 
 # ----------------------------------------------------------------------
@@ -109,6 +109,17 @@
 #   CustomLog "/var/log/apache2/access.log" netdata
 
 # ----------------------------------------------------------------------
+# VHOST AND PORT
+# if your want to graph the request/sec per virtual host and per port (to check the number of requests in http vs https)
+
+# in apache : (%v gives the hostname, %p the port number)
+#  LogFormat "%v %p %h %t \"%r\" %>s %O %I %D \"%{Referer}i\" \"%{User-Agent}i\"" vhost_netdata
+#
+# and in this file in apache_vhosts_log section, add :
+#  custom_log_format:
+#     pattern: '(?P<vhost>[a-zA-Z\d.-_]+) (?P<port>\d+) (?P<address>[\da-f.:]+) \[.*\] "(?P<method>[A-Z]+)[^"]*" (?P<code>[1-9]\d{2}) (?P<bytes_sent>\d+) (?P<resp_length>\d+) (?P<resp_time>\d+)'
+
+# ----------------------------------------------------------------------
 # AUTO-DETECTION JOBS
 # only one of them per web server will run (when they have the same name)
 
diff --git a/collectors/statsd.plugin/Makefile.am b/collectors/statsd.plugin/Makefile.am
new file mode 100644
index 000000000..7f09bacd7
--- /dev/null
+++ b/collectors/statsd.plugin/Makefile.am
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+statsdconfigdir=$(libconfigdir)/statsd.d
+dist_statsdconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    example.conf \
+    $(NULL)
+
+userstatsdconfigdir=$(configdir)/statsd.d
+dist_userstatsdconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
diff --git a/node.d/Makefile.in b/collectors/statsd.plugin/Makefile.in
index dd572ee8b..5c16a86d1 100644
--- a/node.d/Makefile.in
+++ b/collectors/statsd.plugin/Makefile.in
@@ -14,6 +14,8 @@
 
 @SET_MAKE@
 
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 VPATH = @srcdir@
 am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
 am__make_running_with_option = \
@@ -78,19 +80,21 @@ PRE_UNINSTALL = :
 POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
-subdir = node.d
+subdir = collectors/statsd.plugin
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
-	$(dist_node_DATA) $(dist_nodemodules_DATA) \
-	$(dist_nodemoduleslibber_DATA)
+	$(dist_noinst_DATA) $(dist_statsdconfig_DATA) \
+	$(dist_userstatsdconfig_DATA)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -143,10 +147,10 @@ am__uninstall_files_from_dir = { \
     || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
          $(am__cd) "$$dir" && rm -f $$files; }; \
   }
-am__installdirs = "$(DESTDIR)$(nodedir)" "$(DESTDIR)$(nodemodulesdir)" \
-	"$(DESTDIR)$(nodemoduleslibberdir)"
-DATA = $(dist_node_DATA) $(dist_nodemodules_DATA) \
-	$(dist_nodemoduleslibber_DATA)
+am__installdirs = "$(DESTDIR)$(statsdconfigdir)" \
+	"$(DESTDIR)$(userstatsdconfigdir)"
+DATA = $(dist_noinst_DATA) $(dist_statsdconfig_DATA) \
+	$(dist_userstatsdconfig_DATA)
 am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
@@ -246,6 +250,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -267,6 +272,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
@@ -293,33 +299,22 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 varlibdir = @varlibdir@
 webdir = @webdir@
+AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
-dist_node_DATA = \
+dist_noinst_DATA = \
 	README.md \
-	named.node.js \
-	fronius.node.js \
-	sma_webbox.node.js \
-	snmp.node.js \
-	stiebeleltron.node.js \
 	$(NULL)
 
-nodemodulesdir = $(nodedir)/node_modules
-dist_nodemodules_DATA = \
-	node_modules/netdata.js \
-	node_modules/extend.js \
-	node_modules/pixl-xml.js \
-	node_modules/net-snmp.js \
-	node_modules/asn1-ber.js \
-	$(NULL)
+statsdconfigdir = $(libconfigdir)/statsd.d
+dist_statsdconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    example.conf \
+    $(NULL)
 
-nodemoduleslibberdir = $(nodedir)/node_modules/lib/ber
-dist_nodemoduleslibber_DATA = \
-	node_modules/lib/ber/index.js \
-	node_modules/lib/ber/errors.js \
-	node_modules/lib/ber/reader.js \
-	node_modules/lib/ber/types.js \
-	node_modules/lib/ber/writer.js \
-	$(NULL)
+userstatsdconfigdir = $(configdir)/statsd.d
+dist_userstatsdconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
 
 all: all-am
 
@@ -333,9 +328,9 @@ $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__confi
 	      exit 1;; \
 	  esac; \
 	done; \
-	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu node.d/Makefile'; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/statsd.plugin/Makefile'; \
 	$(am__cd) $(top_srcdir) && \
-	  $(AUTOMAKE) --gnu node.d/Makefile
+	  $(AUTOMAKE) --gnu collectors/statsd.plugin/Makefile
 .PRECIOUS: Makefile
 Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	@case '$?' in \
@@ -354,69 +349,48 @@ $(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
 $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
 $(am__aclocal_m4_deps):
-install-dist_nodeDATA: $(dist_node_DATA)
-	@$(NORMAL_INSTALL)
-	@list='$(dist_node_DATA)'; test -n "$(nodedir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(nodedir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(nodedir)" || exit 1; \
-	fi; \
-	for p in $$list; do \
-	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
-	  echo "$$d$$p"; \
-	done | $(am__base_list) | \
-	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(nodedir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(nodedir)" || exit $$?; \
-	done
-
-uninstall-dist_nodeDATA:
-	@$(NORMAL_UNINSTALL)
-	@list='$(dist_node_DATA)'; test -n "$(nodedir)" || list=; \
-	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(nodedir)'; $(am__uninstall_files_from_dir)
-install-dist_nodemodulesDATA: $(dist_nodemodules_DATA)
+install-dist_statsdconfigDATA: $(dist_statsdconfig_DATA)
 	@$(NORMAL_INSTALL)
-	@list='$(dist_nodemodules_DATA)'; test -n "$(nodemodulesdir)" || list=; \
+	@list='$(dist_statsdconfig_DATA)'; test -n "$(statsdconfigdir)" || list=; \
 	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(nodemodulesdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(nodemodulesdir)" || exit 1; \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(statsdconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(statsdconfigdir)" || exit 1; \
 	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
 	done | $(am__base_list) | \
 	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(nodemodulesdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(nodemodulesdir)" || exit $$?; \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(statsdconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(statsdconfigdir)" || exit $$?; \
 	done
 
-uninstall-dist_nodemodulesDATA:
+uninstall-dist_statsdconfigDATA:
 	@$(NORMAL_UNINSTALL)
-	@list='$(dist_nodemodules_DATA)'; test -n "$(nodemodulesdir)" || list=; \
+	@list='$(dist_statsdconfig_DATA)'; test -n "$(statsdconfigdir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(nodemodulesdir)'; $(am__uninstall_files_from_dir)
-install-dist_nodemoduleslibberDATA: $(dist_nodemoduleslibber_DATA)
+	dir='$(DESTDIR)$(statsdconfigdir)'; $(am__uninstall_files_from_dir)
+install-dist_userstatsdconfigDATA: $(dist_userstatsdconfig_DATA)
 	@$(NORMAL_INSTALL)
-	@list='$(dist_nodemoduleslibber_DATA)'; test -n "$(nodemoduleslibberdir)" || list=; \
+	@list='$(dist_userstatsdconfig_DATA)'; test -n "$(userstatsdconfigdir)" || list=; \
 	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(nodemoduleslibberdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(nodemoduleslibberdir)" || exit 1; \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(userstatsdconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(userstatsdconfigdir)" || exit 1; \
 	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
 	done | $(am__base_list) | \
 	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(nodemoduleslibberdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(nodemoduleslibberdir)" || exit $$?; \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(userstatsdconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(userstatsdconfigdir)" || exit $$?; \
 	done
 
-uninstall-dist_nodemoduleslibberDATA:
+uninstall-dist_userstatsdconfigDATA:
 	@$(NORMAL_UNINSTALL)
-	@list='$(dist_nodemoduleslibber_DATA)'; test -n "$(nodemoduleslibberdir)" || list=; \
+	@list='$(dist_userstatsdconfig_DATA)'; test -n "$(userstatsdconfigdir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(nodemoduleslibberdir)'; $(am__uninstall_files_from_dir)
+	dir='$(DESTDIR)$(userstatsdconfigdir)'; $(am__uninstall_files_from_dir)
 tags TAGS:
 
 ctags CTAGS:
@@ -458,7 +432,7 @@ check-am: all-am
 check: check-am
 all-am: Makefile $(DATA)
 installdirs:
-	for dir in "$(DESTDIR)$(nodedir)" "$(DESTDIR)$(nodemodulesdir)" "$(DESTDIR)$(nodemoduleslibberdir)"; do \
+	for dir in "$(DESTDIR)$(statsdconfigdir)" "$(DESTDIR)$(userstatsdconfigdir)"; do \
 	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
 	done
 install: install-am
@@ -512,8 +486,8 @@ info: info-am
 
 info-am:
 
-install-data-am: install-dist_nodeDATA install-dist_nodemodulesDATA \
-	install-dist_nodemoduleslibberDATA
+install-data-am: install-dist_statsdconfigDATA \
+	install-dist_userstatsdconfigDATA
 
 install-dvi: install-dvi-am
 
@@ -557,25 +531,24 @@ ps: ps-am
 
 ps-am:
 
-uninstall-am: uninstall-dist_nodeDATA uninstall-dist_nodemodulesDATA \
-	uninstall-dist_nodemoduleslibberDATA
+uninstall-am: uninstall-dist_statsdconfigDATA \
+	uninstall-dist_userstatsdconfigDATA
 
 .MAKE: install-am install-strip
 
 .PHONY: all all-am check check-am clean clean-generic cscopelist-am \
 	ctags-am distclean distclean-generic distdir dvi dvi-am html \
 	html-am info info-am install install-am install-data \
-	install-data-am install-dist_nodeDATA \
-	install-dist_nodemodulesDATA \
-	install-dist_nodemoduleslibberDATA install-dvi install-dvi-am \
+	install-data-am install-dist_statsdconfigDATA \
+	install-dist_userstatsdconfigDATA install-dvi install-dvi-am \
 	install-exec install-exec-am install-html install-html-am \
 	install-info install-info-am install-man install-pdf \
 	install-pdf-am install-ps install-ps-am install-strip \
 	installcheck installcheck-am installdirs maintainer-clean \
 	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
 	pdf-am ps ps-am tags-am uninstall uninstall-am \
-	uninstall-dist_nodeDATA uninstall-dist_nodemodulesDATA \
-	uninstall-dist_nodemoduleslibberDATA
+	uninstall-dist_statsdconfigDATA \
+	uninstall-dist_userstatsdconfigDATA
 
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
diff --git a/collectors/statsd.plugin/README.md b/collectors/statsd.plugin/README.md
new file mode 100644
index 000000000..6ef038343
--- /dev/null
+++ b/collectors/statsd.plugin/README.md
@@ -0,0 +1,523 @@
+# Netdata Statsd
+
+statsd is a system to collect data from any application. Applications are sending metrics to it, usually via non-blocking UDP communication, and statsd servers collect these metrics, perform a few simple calculations on them and push them to backend time-series databases.
+
+There is a [plethora of client libraries](https://github.com/etsy/statsd/wiki#client-implementations) for embedding statsd metrics to any application framework. This makes statsd quite popular for custom application metrics.
+
+## netdata statsd
+
+netdata is a fully featured statsd server. It can collect statsd formatted metrics, visualize them on its dashboards, stream them to other netdata servers or archive them to backend time-series databases.
+
+netdata statsd is inside netdata (an internal plugin, running inside the netdata daemon), it is configured via `netdata.conf` and by-default listens on standard statsd ports (tcp and udp 8125 - yes, netdata statsd server supports both tcp and udp at the same time).
+
+Since statsd is embedded in netdata, it means you now have a statsd server embedded on all your servers. So, the application can send its metrics to `localhost:8125`. This provides a distributed statsd implementation.
+
+netdata statsd is fast. It can collect more than **1.200.000 metrics per second** on modern hardware, more than **200Mbps of sustained statsd traffic**, using 1 CPU core (yes, it is single threaded - actually double-threaded, one thread collects metrics, another one updates the charts from the collected data).
+
+## metrics supported by netdata
+
+netdata fully supports the statsd protocol. All statsd client libraries can be used with netdata too.
+
+- **Gauges**
+
+   The application sends `name:value|g`, where `value` is any **decimal/fractional** number, statsd reports the latest value collected and the number of times it was updated (events).
+
+   The application may increment or decrement a previous value, by setting the first character of the value to ` + ` or ` - ` (so, the only way to set a gauge to an absolute negative value, is to first set it to zero). 
+
+   Sampling rate is supported (check below).
+
+   When a gauge is not collected and the setting is not to show gaps on the charts (the default), the last value will be shown, until a data collection event changes it.
+
+- **Counters** and **Meters**
+
+   The application sends `name:value|c`, `name:value|C` or `name:value|m`, where `value` is a positive or negative **integer** number of events occurred, statsd reports the **rate** and the number of times it was updated (events).
+
+   `:value` can be omitted and statsd will assume it is `1`. `|c`, `|C` and `|m` can be omitted an statsd will assume it is `|m`. So, the application may send just `name` and statsd will parse it as `name:1|m`.
+
+   For counters use `|c` (esty/statsd compatible) or `|C` (brubeck compatible), for meters use `|m`.
+
+   Sampling rate is supported (check below).
+
+   When a counter or meter is not collected and the setting is not to show gaps on the charts (the default), zero will be shown, until a data collection event changes it.
+
+- **Timers** and **Histograms**
+
+   The application sends `name:value|ms` or `name:value|h`, where ` value` is any **decimal/fractional** number, statsd reports **min**, **max**, **average**, **sum**, **95th percentile**, **median** and **standard deviation** and the total number of times it was updated (events).
+
+   For timers use `|ms`, or histograms use `|h`. The only difference between the two, is the `units` of the charts (timers report milliseconds).
+
+   Sampling rate is supported (check below).
+
+   When a timer or histogram is not collected and the setting is not to show gaps on the charts (the default), zero will be shown, until a data collection event changes it.
+
+- **Sets**
+
+    The application sends `name:value|s`, where `value` is anything (**number or text**, leading and trailing spaces are removed), statsd reports the number of unique values sent and the number of times it was updated (events).
+
+   Sampling rate is **not** supported for Sets. `value` is always considered text.
+
+   When a set is not collected and the setting is not to show gaps on the charts (the default), zero will be shown, until a data collection event changes it.
+
+#### Sampling Rates
+
+The application may append `|@sampling_rate`, where `sampling_rate` is a number from `0.0` to `1.0`, to have statsd extrapolate the value, to predict to total for the whole period. So, if the application reports to statsd a value for 1/10th of the time, it can append `|@0.1` to the metrics it sends to statsd.
+
+#### Overlapping metrics
+
+netdata statsd maintains different indexes for each of the types supported. This means the same metric `name` may exist under different types concurrently.
+
+#### Multiple metrics per packet
+
+netdata accepts multiple metrics per packet if each is terminated with `\n`.
+
+#### TCP packets
+
+netdata listens for both TCP and UDP packets. For TCP though, is it important to always append `\n` on each metric. netdata uses this to detect if a metric is split into multiple TCP packets. On disconnect, even the remaining (non terminated with `\n`) buffer, is processed.
+
+#### UDP packets
+
+When sending multiple packets over UDP, it is important not to exceed the network MTU (usually 1500 bytes minus a few bytes for the headers). netdata will accept UDP packets up to 9000 bytes, but the underlying network will not exceed MTU. 
+
+## configuration
+
+This is the statsd configuration at `/etc/netdata/netdata.conf`:
+
+```
+[statsd]
+	# enabled = yes
+	# decimal detail = 1000
+	# update every (flushInterval) = 1
+	# udp messages to process at once = 10
+	# create private charts for metrics matching = *
+	# max private charts allowed = 200
+	# max private charts hard limit = 1000
+	# private charts memory mode = save
+	# private charts history = 3996
+	# histograms and timers percentile (percentThreshold) = 95.00000
+	# add dimension for number of events received = yes
+	# gaps on gauges (deleteGauges) = no
+	# gaps on counters (deleteCounters) = no
+	# gaps on meters (deleteMeters) = no
+	# gaps on sets (deleteSets) = no
+	# gaps on histograms (deleteHistograms) = no
+	# gaps on timers (deleteTimers) = no
+	# listen backlog = 4096
+	# default port = 8125
+	# bind to = udp:localhost:8125 tcp:localhost:8125
+```
+
+### statsd main config options
+- `enabled = yes|no`
+
+   controls if statsd will be enabled for this netdata. The default is enabled.
+
+- `default port = 8125`
+
+   controls the port statsd will use. This is the default, since the next line, allows defining ports too.
+
+- `bind to = udp:localhost tcp:localhost`
+
+   is a space separated list of IPs and ports to listen to. The format is `PROTOCOL:IP:PORT` - if `PORT` is omitted, the `default port` will be used. If `IP` is IPv6, it needs to be enclosed in `[]`. `IP` can also be ` * ` (to listen on all IPs) or even a hostname.
+
+- `update every (flushInterval) = 1` seconds, controls the frequency statsd will push the collected metrics to netdata charts.
+
+- `decimal detail = 1000` controls the number of fractional digits in gauges and histograms. netdata collects metrics using signed 64 bit integers and their fractional detail is controlled using multipliers and divisors. This setting is used to multiply all collected values to convert them to integers and is also set as the divisors, so that the final data will be a floating point number with this fractional detail (1000 = X.0 - X.999, 10000 = X.0 - X.9999, etc).
+
+The rest of the settings are discussed below.
+
+## statsd charts
+
+netdata can visualize statsd collected metrics in 2 ways:
+
+1. Each metric gets its own **private chart**. This is the default and does not require any configuration (although there are a few options to tweak).
+
+2. **Synthetic charts** can be created, combining multiple metrics, independently of their metric types. For this type of charts, special configuration is required, to define the chart title, type, units, its dimensions, etc.
+
+### private metric charts
+
+Private charts are controlled with `create private charts for metrics matching = *`. This setting accepts a space separated list of simple patterns (use `*` as wildcard, prepend a pattern with `!` for a negative match, the order of patterns is important).
+
+So to render charts for all `myapp.*` metrics, except `myapp.*.badmetric`, use:
+
+```
+create private charts for metrics matching = !myapp.*.badmetric myapp.*
+```
+
+The default is to render private charts for all metrics.
+
+The `memory mode` of the round robin database and the `history` of private metric charts are controlled with `private charts memory mode` and `private charts history`. The defaults for both settings is to use the global netdata settings. So, you need to edit them only when you want statsd to use different settings compared to the global ones.
+
+If you have thousands of metrics, each with its own private chart, you may notice that your web browser becomes slow when you view the netdata dashboard (this is a web browser issue we need to address at the netdata UI). So, netdata has a protection to stop creating charts when `max private charts allowed = 200` (soft limit) is reached.
+
+The metrics above this soft limit are still processed by netdata and will be available to be sent to backend time-series databases, up to `max private charts hard limit = 1000`. So, between 200 and 1000 charts, netdata will still generate charts, but they will automatically be created with `memory mode = none` (netdata will not maintain a database for them). These metrics will be sent to backend time series databases, if the backend configuration is set to `as collected`.
+
+Metrics above the hard limit are still collected, but they can only be used in synthetic charts (once a metric is added to chart, it will be sent to backend servers too).
+
+Example private charts (automatically generated without any configuration):
+
+#### counters
+
+- Scope: **count the events of something** (e.g. number of file downloads)
+- Format: `name:INTEGER|c` or `name:INTEGER|C` or `name|c`
+- statsd increments the counter by the `INTEGER` number supplied (positive, or negative).
+
+![image](https://cloud.githubusercontent.com/assets/2662304/26131553/4a26d19c-3aa3-11e7-94e8-c53b5ed6ebc3.png)
+
+#### gauges
+
+- Scope: **report the value of something** (e.g. cache memory used by the application server)
+- Format: `name:FLOAT|g`
+- statsd remembers the last value supplied, and can increment or decrement the latest value if `FLOAT` begins with ` + ` or ` - `.
+
+![image](https://cloud.githubusercontent.com/assets/2662304/26131575/5d54e6f0-3aa3-11e7-9099-bc4440cd4592.png)
+
+#### histograms
+
+- Scope: **statistics on a size of events** (e.g. statistics on the sizes of files downloaded)
+- Format: `name:FLOAT|h`
+- statsd maintains a list of all the values supplied and provides statistics on them.
+
+![image](https://cloud.githubusercontent.com/assets/2662304/26131587/704de72a-3aa3-11e7-9ea9-0d2bb778c150.png)
+
+The same chart with `sum` unselected, to show the detail of the dimensions supported:
+![image](https://cloud.githubusercontent.com/assets/2662304/26131598/8076443a-3aa3-11e7-9ffa-ea535aee9c9f.png)
+
+#### meters
+
+This is identical to `counter`.
+
+- Scope: **count the events of something** (e.g. number of file downloads)
+- Format: `name:INTEGER|m` or `name|m` or just `name`
+- statsd increments the counter by the `INTEGER` number supplied (positive, or negative).
+
+![image](https://cloud.githubusercontent.com/assets/2662304/26131605/8fdf5a06-3aa3-11e7-963f-7ecf207d1dbc.png)
+
+#### sets
+
+- Scope: **count the unique occurrences of something** (e.g. unique filenames downloaded, or unique users that downloaded files)
+- Format: `name:TEXT|s`
+- statsd maintains a unique index of all values supplied, and reports the unique entries in it.
+
+![image](https://cloud.githubusercontent.com/assets/2662304/26131612/9eaa7b1a-3aa3-11e7-903b-d881e9a35be2.png)
+
+#### timers
+
+- Scope: **statistics on the duration of events** (e.g. statistics for the duration of file downloads)
+- Format: `name:FLOAT|ms`
+- statsd maintains a list of all the values supplied and provides statistics on them.
+
+![image](https://cloud.githubusercontent.com/assets/2662304/26131620/acbea6a4-3aa3-11e7-8bdd-4a8996847767.png)
+
+The same chart with the `sum` unselected:
+![image](https://cloud.githubusercontent.com/assets/2662304/26131629/bc34f2d2-3aa3-11e7-8a07-f2fc94ba4352.png)
+
+
+
+### synthetic statsd charts
+
+Using synthetic charts, you can create dedicated sections on the dashboard to render the charts. You can control everything: the main menu, the submenus, the charts, the dimensions on each chart, etc.
+
+Synthetic charts are organized in
+
+- **applications** (i.e. entries at the main menu of the netdata dashboard)
+- **charts for each application** (grouped in families - i.e. submenus at the dashboard menu)
+- **statsd metrics for each chart** (i.e. dimensions of the charts)
+
+For each application you need to create a `.conf` file in `/etc/netdata/statsd.d`.
+
+So, to create the statsd application `myapp`, you can create the file `/etc/netdata/statsd.d/myapp.conf`, with this content:
+
+```
+[app]
+	name = myapp
+	metrics = myapp.*
+	private charts = no
+	gaps when not collected = no
+	memory mode = ram
+	history = 60
+
+[dictionary]
+    m1 = metric1
+    m2 = metric2
+
+# replace 'mychart' with the chart id
+# the chart will be named: myapp.mychart
+[mychart]
+	name = mychart
+	title = my chart title
+	family = my family
+	context = chart.context
+	units = tests/s
+	priority = 91000
+	type = area
+	dimension = myapp.metric1 m1
+	dimension = myapp.metric2 m2
+```
+
+Using the above configuration `myapp` should get its own section on the dashboard, having one chart with 2 dimensions.
+
+`[app]` starts a new application definition. The supported settings in this section are:
+
+- `name` defines the name of the app.
+- `metrics` is a netdata simple pattern (space separated patterns, using `*` for wildcard, possibly starting with `!` for negative match). This pattern should match all the possible statsd metrics that will be participating in the application `myapp`.
+- `private charts = yes|no`, enables or disables private charts for the metrics matched.
+- `gaps when not collected = yes|no`, enables or disables gaps on the charts of the application, when metrics are not collected.
+- `memory mode` sets the memory mode for all charts of the application. The default is the global default for netdata (not the global default for statsd private charts).
+- `history` sets the size of the round robin database for this application. The default is the global default for netdata (not the global default for statsd private charts).
+
+`[dictionary]` defines name-value associations. These are used to renaming metrics, when added to synthetic charts. Metric names are also defined at each `dimension` line. However, using the dictionary dimension names can be declared globally, for each app and is the only way to rename dimensions when using patterns. Of course the dictionary can be empty or missing.
+
+Then, you can add any number of charts. Each chart should start with `[id]`.  The chart will be called `app_name.id`.  `family` controls the submenu on the dashboard. `context` controls the alarm templates. `priority` controls the ordering of the charts on the dashboard. The rest of the settings are informational.
+
+You can add any number of metrics to a chart, using `dimension` lines. These lines accept 5 space separated parameters:
+
+1. the metric name, as it is collected (it has to be matched by the `metrics = ` pattern of the app)
+2. the dimension name, as it should be shown on the chart
+3. an optional selector (type) of the value to shown (see below)
+4. an optional multiplier
+5. an optional divider
+6. optional flags, space separated and enclosed in quotes. All the external plugins `DIMENSION` flags can be used. Currently the only usable flag is `hidden`, to add the dimension, but not show it on the dashboard. This is usually needed to have the values available for percentage calculation, or use them in alarms.
+
+So, the format is this:
+```
+dimension = [pattern] METRIC NAME TYPE MULTIPLIER DIVIDER OPTIONS
+```
+
+`pattern` is a keyword. When set, `METRIC` is expected to be a netdata simple pattern that will be used to match all the statsd metrics to be added to the chart. So, `pattern` automatically matches any number of statsd metrics, all of which will be added as separate chart dimensions.
+
+`TYPE`, `MUTLIPLIER`, `DIVIDER` and `OPTIONS` are optional.
+
+`TYPE` can be:
+
+- `events` to show the number of events received by statsd for this metric
+- `last` to show the last value, as calculated at the flush interval of the metric (the default)
+
+Then for histograms and timers the following types are also supported:
+
+- `min`, show the minimum value
+- `max`, show the maximum value
+- `sum`, show the sum of all values
+- `average` (same as `last`)
+- `percentile`, show the 95th percentile (or any other percentile, as configured at statsd global config)
+- `median`, show the median of all values (i.e. sort all values and get the middle value)
+- `stddev`, show the standard deviation of the values
+
+#### example synthetic charts
+
+statsd metrics: `foo` and `bar`.
+
+Contents of file `/etc/netdata/stats.d/foobar.conf`:
+
+```
+[app]
+  name = foobarapp
+  metrics = foo bar
+  private charts = yes
+
+[foobar_chart1]
+  title = Hey, foo and bar together
+  family = foobar_family
+  context = foobarapp.foobars
+  units = foobars
+  type = area
+  dimension = foo 'foo me' last 1 1
+  dimension = bar 'bar me' last 1 1
+```
+
+I sent to statsd: `foo:10|g` and `bar:20|g`.
+
+I got these private charts:
+
+![screenshot from 2017-08-03 23-28-19](https://user-images.githubusercontent.com/2662304/28942295-7c3a73a8-78a3-11e7-88e5-a9a006bb7465.png)
+
+and this synthetic chart:
+
+![screenshot from 2017-08-03 23-29-14](https://user-images.githubusercontent.com/2662304/28942317-958a2c68-78a3-11e7-853f-32850141dd36.png)
+
+#### dictionary to name dimensions
+
+The `[dictionary]` section accepts any number of `name = value` pairs.
+
+netdata uses this dictionary as follows:
+
+1. When a `dimension` has a non-empty `NAME`, that name is looked up at the dictionary.
+
+2. If the above lookup gives nothing, or the `dimension` has an empty `NAME`, the original statsd metric name is looked up at the dictionary.
+
+3. If any of the above succeeds, netdata uses the `value` of the dictionary, to set the name of the dimension. The dimensions will have as ID the original statsd metric name, and as name, the dictionary value.
+
+So, you can use the dictionary in 2 ways:
+
+1. set `dimension = myapp.metric1 ''` and have at the dictionary `myapp.metric1 = metric1 name`
+2. set `dimension = myapp.metric1 'm1'` and have at the dictionary `m1 = metric1 name`
+
+In both cases, the dimension will be added with ID `myapp.metric1` and will be named `metric1 name`. So, in alarms you can use either of the 2 as `${myapp.metric1}` or `${metric1 name}`.
+
+> keep in mind that if you add multiple times the same statsd metric to a chart, netdata will append `TYPE` to the dimension ID, so `myapp.metric1` will be added as `myapp.metric1_last` or `myapp.metric1_events`, etc. If you add multiple times the same metric with the same `TYPE` to a chart, netdata will also append an incremental counter to the dimension ID, i.e. `myapp.metric1_last1`, `myapp.metric1_last2`, etc.
+
+#### dimension patterns
+
+netdata allows adding multiple dimensions to a chart, by matching the statsd metrics with a netdata simple pattern.
+
+Assume we have an API that provides statsd metrics for each response code per method it supports, like these:
+
+```
+myapp.api.get.200
+myapp.api.get.400
+myapp.api.get.500
+myapp.api.del.200
+myapp.api.del.400
+myapp.api.del.500
+myapp.api.post.200
+myapp.api.post.400
+myapp.api.post.500
+myapp.api.all.200
+myapp.api.all.400
+myapp.api.all.500
+```
+
+To add all response codes of `myapp.api.get` to a chart use this:
+
+```
+[api_get_responses]
+   ...
+   dimension = pattern 'myapp.api.get.* '' last 1 1
+```
+
+The above will add dimension named `200`, `400` and `500` (yes, netdata extracts the wildcarded part of the metric name - so the dimensions will be named with whatever the `*` matched). You can rename the dimensions with this:
+
+```
+[dictionary]
+    get.200 = 200 ok
+    get.400 = 400 bad request
+    get.500 = 500 cannot connect to db
+    
+[api_get_responses]
+   ...
+   dimension = pattern 'myapp.api.get.* 'get.' last 1 1
+```
+
+Note that we added a `NAME` to the dimension line with `get.`. This is prefixed to the wildcarded part of the metric name, to compose the key for looking up the dictionary. So `500` became `get.500` which was looked up to the dictionary to find value `500 cannot connect to db`. This way we can have different dimension names, for each of the API methods (i.e. `get.500 = 500 cannot connect to db` while `post.500 = 500 cannot write to disk`).
+
+To add all API methods to a chart, do this:
+
+```
+[ok_by_method]
+   ...
+   dimension = pattern 'myapp.api.*.200 '' last 1 1
+```
+
+The above will add `get`, `post`, `del` and `all` to the chart.
+
+If `all` is not wanted (a `stacked` chart does not need the `all` dimension, since the sum of the dimensions provides the total), the line should be:
+
+```
+[ok_by_method]
+   ...
+   dimension = pattern '!myapp.api.all.* myapp.api.*.200 '' last 1 1
+```
+
+With the above, all methods except `all` will be added to the chart.
+
+To automatically rename the methods, use this:
+
+```
+[dictionary]
+    method.get = GET
+    method.post = ADD
+    method.del = DELETE
+    
+[ok_by_method]
+   ...
+   dimension = pattern '!myapp.api.all.* myapp.api.*.200 'method.' last 1 1
+```
+
+Using the above, the dimensions will be added as `GET`, `ADD` and `DELETE`.
+
+
+## interpolation
+
+~~If you send just one value to statsd, you will notice that the chart is created but no value is shown. The reason is that netdata interpolates all values at second boundaries. For incremental values (`counters` and `meters` in statsd terminology), if you send 10 at 00:00:00.500, 20 at 00:00:01.500 and 30 at 00:00:02.500, netdata will show 15 at 00:00:01 and 25 at 00:00:02.~~
+
+~~This interpolation is automatic and global in netdata for all charts, for incremental values. This means that for the chart to start showing values you need to send 2 values across 2 flush intervals.~~
+
+~~(although this is required for incremental values, netdata allows mixing incremental and absolute values on the same charts, so this little limitation [i.e. 2 values to start visualization], is applied on all netdata dimensions).~~
+
+(statsd metrics do not loose their first data collection due to interpolation anymore - fixed with [PR #2411](https://github.com/netdata/netdata/pull/2411))
+
+## sending statsd metrics from shell scripts
+
+You can send/update statsd metrics from shell scripts. You can use this feature, to visualize in netdata automated jobs you run on your servers.
+
+The command you need to run is:
+
+```sh
+echo "NAME:VALUE|TYPE" | nc -u --send-only localhost 8125
+```
+
+Where:
+
+- `NAME` is the metric name
+- `VALUE` is the value for that metric (**gauges** `|g`, **timers** `|ms` and **histograms** `|h` accept decimal/fractional numbers, **counters** `|c` and **meters** `|m` accept integers, **sets** `|s` accept anything)
+- `TYPE` is one of `g`, `ms`, `h`, `c`, `m`, `s` to select the metric type.
+
+So, to set `metric1` as gauge to value `10`, use:
+
+```sh
+echo "metric1:10|g" | nc -u --send-only localhost 8125
+```
+
+To increment `metric2` by `10`, as a counter, use:
+
+```sh
+echo "metric2:10|c" | nc -u --send-only localhost 8125
+```
+
+You can send multiple metrics like this:
+
+```sh
+# send multiple metrics via UDP
+printf "metric1:10|g\nmetric2:10|c\n" | nc -u --send-only localhost 8125
+```
+
+Remember, for UDP communication each packet should not exceed the MTU. So, if you plan to push too many metrics at once, prefer TCP communication:
+
+```sh
+# send multiple metrics via TCP
+printf "metric1:10|g\nmetric2:10|c\n" | nc --send-only localhost 8125
+```
+
+You can also use this little function to take care of all the details:
+
+```sh
+#!/usr/bin/env bash
+
+STATSD_HOST="localhost"
+STATSD_PORT="8125"
+statsd() {
+	local udp="-u" all="${*}"
+
+        # if the string length of all parameters given is above 1000, use TCP
+        [ "${#all}" -gt 1000 ] && udp=
+
+        while [ ! -z "${1}" ]
+        do
+          	printf "${1}\n"
+                shift
+        done | nc ${udp} --send-only ${STATSD_HOST} ${STATSD_PORT} || return 1
+
+        return 0
+}
+```
+
+You can use it like this:
+
+```sh
+# first, source it in your script
+source statsd.sh
+
+# then, at any point:
+statsd "metric1:10|g" "metric2:10|c" ...
+```
+
+The function is smart enough to call `nc` just once and pass all the metrics to it. It will also automatically switch to TCP if the metrics to send are above 1000 bytes.
diff --git a/conf.d/statsd.d/example.conf b/collectors/statsd.plugin/example.conf
index 0af9dd27d..2c7de6c7b 100644
--- a/conf.d/statsd.d/example.conf
+++ b/collectors/statsd.plugin/example.conf
@@ -1,16 +1,17 @@
 # statsd synthetic charts configuration
 
-# You can add many .conf files, one for each of your apps
+# You can add many .conf files in /etc/netdata/statsd.d/,
+# one for each of your apps.
 
 # start a new app - you can add many apps in the same file
 [app]
     # give a name for this app
     # this controls the main menu on the dashboard
     # and will be the prefix for all charts of the app
-    name = myapp
+    name = myexampleapp
 
     # match all the metrics of the app
-    metrics = myapp.*
+    metrics = myexampleapp.*
 
     # shall private charts of these metrics be created?
     private charts = no
@@ -26,13 +27,11 @@
     # the default is to use the global history
     #history = 3600
 
-
-
 # create a chart
-# this is its id - the chart will be named myapp.mychart
-[mychart]
+# this is its id - the chart will be named myexampleapp.myexamplechart
+[myexamplechart]
     # a name for the chart, similar to the id (2 names for each chart)
-    name = mychart
+    name = myexamplechart
 
     # the chart title
     title = my chart title
@@ -57,9 +56,9 @@
     #        events = the number of events for this metric
     #        last = the last value collected
     #        all the others are only valid for histograms and timers
-    dimension = myapp.metric1 avg   average 1 1
-    dimension = myapp.metric1 lower min     1 1
-    dimension = myapp.metric1 upper max     1 1
-    dimension = myapp.metric2 other last    1 1
+    dimension = myexampleapp.metric1 avg   average 1 1
+    dimension = myexampleapp.metric1 lower min     1 1
+    dimension = myexampleapp.metric1 upper max     1 1
+    dimension = myexampleapp.metric2 other last    1 1
 
 # You can add as many charts as needed
diff --git a/src/statsd.c b/collectors/statsd.plugin/statsd.c
index 44ebd8894..c92bfd1c2 100644
--- a/src/statsd.c
+++ b/collectors/statsd.plugin/statsd.c
@@ -1,7 +1,10 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "statsd.h"
 
 #define STATSD_CHART_PREFIX "statsd"
-#define STATSD_CHART_PRIORITY 90000
+
+#define PLUGIN_STATSD_NAME "statsd.plugin"
 
 // --------------------------------------------------------------------------------------
 
@@ -87,7 +90,10 @@ typedef enum statsd_metric_options {
     STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED        = 0x00000002, // render a private chart for this metric
     STATSD_METRIC_OPTION_PRIVATE_CHART_CHECKED        = 0x00000004, // the metric has been checked if it should get private chart or not
     STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT        = 0x00000008, // show the count of events for this private chart
-    STATSD_METRIC_OPTION_CHECKED_IN_APPS              = 0x00000010, // set when this metric has been checked agains apps
+    STATSD_METRIC_OPTION_CHECKED_IN_APPS              = 0x00000010, // set when this metric has been checked against apps
+    STATSD_METRIC_OPTION_USED_IN_APPS                 = 0x00000020, // set when this metric is used in apps
+    STATSD_METRIC_OPTION_CHECKED                      = 0x00000040, // set when the charting thread checks this metric for use in charts (its usefulness)
+    STATSD_METRIC_OPTION_USEFUL                       = 0x00000080, // set when the charting thread finds the metric useful (i.e. used in a chart)
 } STATS_METRIC_OPTIONS;
 
 typedef enum statsd_metric_type {
@@ -101,7 +107,7 @@ typedef enum statsd_metric_type {
 
 
 typedef struct statsd_metric {
-    avl avl;                        // indexing
+    avl avl;                        // indexing - has to be first
 
     const char *name;               // the name of the metric
     uint32_t hash;                  // hash of the name
@@ -122,14 +128,15 @@ typedef struct statsd_metric {
 
     // chart related members
     STATS_METRIC_OPTIONS options;   // STATSD_METRIC_OPTION_* (bitfield)
-    char reset;                     // set to 1 to reset this metric to zero
+    char reset;                     // set to 1 by the charting thread to instruct the collector thread(s) to reset this metric
     collected_number last;          // the last value sent to netdata
-    RRDSET *st;                     // the chart of this metric
+    RRDSET *st;                     // the private chart of this metric
     RRDDIM *rd_value;               // the dimension of this metric value
     RRDDIM *rd_count;               // the dimension for the number of events received
 
     // linking, used for walking through all metrics
     struct statsd_metric *next;
+    struct statsd_metric *next_useful;
 } STATSD_METRIC;
 
 
@@ -140,10 +147,12 @@ typedef struct statsd_index {
     char *name;                     // the name of the index of metrics
     size_t events;                  // the number of events processed for this index
     size_t metrics;                 // the number of metrics in this index
+    size_t useful;                  // the number of useful metrics in this index
 
     STATSD_AVL_TREE index;          // the AVL tree
 
     STATSD_METRIC *first;           // the linked list of metrics (new metrics are added in front)
+    STATSD_METRIC *first_useful;    // the linked list of useful metrics (new metrics are added in front)
     STATSD_FIRST_PTR_MUTEX;         // when mutli-threading is enabled, a lock to protect the linked list
 
     STATS_METRIC_OPTIONS default_options;  // default options for all metrics in this index
@@ -255,13 +264,13 @@ static struct statsd {
     SIMPLE_PATTERN *charts_for;
 
     size_t tcp_idle_timeout;
-    size_t decimal_detail;
+    collected_number decimal_detail;
     size_t private_charts;
     size_t max_private_charts;
     size_t max_private_charts_hard;
     RRD_MEMORY_MODE private_charts_memory_mode;
     long private_charts_rrd_history_entries;
-    int private_charts_hidden;
+    unsigned int private_charts_hidden:1;
 
     STATSD_APP *apps;
     size_t recvmmsg_size;
@@ -344,6 +353,7 @@ static struct statsd {
         .threads = 0,
         .collection_threads_status = NULL,
         .sockets = {
+                .config          = &netdata_config,
                 .config_section  = CONFIG_SECTION_STATSD,
                 .default_bind_to = "udp:localhost tcp:localhost",
                 .default_port    = STATSD_LISTEN_PORT,
@@ -427,6 +437,13 @@ static inline LONG_DOUBLE statsd_parse_float(const char *v, LONG_DOUBLE def) {
     return value;
 }
 
+static inline LONG_DOUBLE statsd_parse_sampling_rate(const char *v) {
+    LONG_DOUBLE sampling_rate = statsd_parse_float(v, 1.0);
+    if(unlikely(isless(sampling_rate, 0.001))) sampling_rate = 0.001;
+    if(unlikely(isgreater(sampling_rate, 1.0))) sampling_rate = 1.0;
+    return sampling_rate;
+}
+
 static inline long long statsd_parse_int(const char *v, long long def) {
     long long value;
 
@@ -455,7 +472,12 @@ static inline int value_is_zinit(const char *value) {
     return (value && *value == 'z' && *++value == 'i' && *++value == 'n' && *++value == 'i' && *++value == 't' && *++value == '\0');
 }
 
+#define is_metric_checked(m) ((m)->options & STATSD_METRIC_OPTION_CHECKED)
+#define is_metric_useful_for_collection(m) (!is_metric_checked(m) || ((m)->options & STATSD_METRIC_OPTION_USEFUL))
+
 static inline void statsd_process_gauge(STATSD_METRIC *m, const char *value, const char *sampling) {
+    if(!is_metric_useful_for_collection(m)) return;
+
     if(unlikely(!value || !*value)) {
         error("STATSD: metric '%s' of type gauge, with empty value is ignored.", m->name);
         return;
@@ -471,16 +493,18 @@ static inline void statsd_process_gauge(STATSD_METRIC *m, const char *value, con
     }
     else {
         if (unlikely(*value == '+' || *value == '-'))
-            m->gauge.value += statsd_parse_float(value, 1.0) / statsd_parse_float(sampling, 1.0);
+            m->gauge.value += statsd_parse_float(value, 1.0) / statsd_parse_sampling_rate(sampling);
         else
-            m->gauge.value = statsd_parse_float(value, 1.0) / statsd_parse_float(sampling, 1.0);
+            m->gauge.value = statsd_parse_float(value, 1.0);
 
         m->events++;
         m->count++;
     }
 }
 
-static inline void statsd_process_counter(STATSD_METRIC *m, const char *value, const char *sampling) {
+static inline void statsd_process_counter_or_meter(STATSD_METRIC *m, const char *value, const char *sampling) {
+    if(!is_metric_useful_for_collection(m)) return;
+
     // we accept empty values for counters
 
     if(unlikely(m->reset)) statsd_reset_metric(m);
@@ -489,21 +513,21 @@ static inline void statsd_process_counter(STATSD_METRIC *m, const char *value, c
         // magic loading of metric, without affecting anything
     }
     else {
-        m->counter.value += llrintl((LONG_DOUBLE) statsd_parse_int(value, 1) / statsd_parse_float(sampling, 1.0));
+        m->counter.value += llrintl((LONG_DOUBLE) statsd_parse_int(value, 1) / statsd_parse_sampling_rate(sampling));
 
         m->events++;
         m->count++;
     }
 }
 
-static inline void statsd_process_meter(STATSD_METRIC *m, const char *value, const char *sampling) {
-    // this is the same with the counter
-    statsd_process_counter(m, value, sampling);
-}
+#define statsd_process_counter(m, value, sampling) statsd_process_counter_or_meter(m, value, sampling)
+#define statsd_process_meter(m, value, sampling) statsd_process_counter_or_meter(m, value, sampling)
+
+static inline void statsd_process_histogram_or_timer(STATSD_METRIC *m, const char *value, const char *sampling, const char *type) {
+    if(!is_metric_useful_for_collection(m)) return;
 
-static inline void statsd_process_histogram(STATSD_METRIC *m, const char *value, const char *sampling) {
     if(unlikely(!value || !*value)) {
-        error("STATSD: metric '%s' of type histogram, with empty value is ignored.", m->name);
+        error("STATSD: metric of type %s, with empty value is ignored.", type);
         return;
     }
 
@@ -516,31 +540,35 @@ static inline void statsd_process_histogram(STATSD_METRIC *m, const char *value,
         // magic loading of metric, without affecting anything
     }
     else {
-        if (unlikely(m->histogram.ext->used == m->histogram.ext->size)) {
-            netdata_mutex_lock(&m->histogram.ext->mutex);
-            m->histogram.ext->size += statsd.histogram_increase_step;
-            m->histogram.ext->values = reallocz(m->histogram.ext->values, sizeof(LONG_DOUBLE) * m->histogram.ext->size);
-            netdata_mutex_unlock(&m->histogram.ext->mutex);
-        }
+        LONG_DOUBLE v = statsd_parse_float(value, 1.0);
+        LONG_DOUBLE sampling_rate = statsd_parse_sampling_rate(sampling);
+        if(unlikely(isless(sampling_rate, 0.01))) sampling_rate = 0.01;
+        if(unlikely(isgreater(sampling_rate, 1.0))) sampling_rate = 1.0;
+
+        long long samples = llrintl(1.0 / sampling_rate);
+        while(samples-- > 0) {
+
+            if(unlikely(m->histogram.ext->used == m->histogram.ext->size)) {
+                netdata_mutex_lock(&m->histogram.ext->mutex);
+                m->histogram.ext->size += statsd.histogram_increase_step;
+                m->histogram.ext->values = reallocz(m->histogram.ext->values, sizeof(LONG_DOUBLE) * m->histogram.ext->size);
+                netdata_mutex_unlock(&m->histogram.ext->mutex);
+            }
 
-        m->histogram.ext->values[m->histogram.ext->used++] = statsd_parse_float(value, 1.0) / statsd_parse_float(sampling, 1.0);
+            m->histogram.ext->values[m->histogram.ext->used++] = v;
+        }
 
         m->events++;
         m->count++;
     }
 }
 
-static inline void statsd_process_timer(STATSD_METRIC *m, const char *value, const char *sampling) {
-    if(unlikely(!value || !*value)) {
-        error("STATSD: metric of type timer, with empty value is ignored.");
-        return;
-    }
-
-    // timers are a use case of histogram
-    statsd_process_histogram(m, value, sampling);
-}
+#define statsd_process_timer(m, value, sampling) statsd_process_histogram_or_timer(m, value, sampling, "timer")
+#define statsd_process_histogram(m, value, sampling) statsd_process_histogram_or_timer(m, value, sampling, "histogram")
 
 static inline void statsd_process_set(STATSD_METRIC *m, const char *value) {
+    if(!is_metric_useful_for_collection(m)) return;
+
     if(unlikely(!value || !*value)) {
         error("STATSD: metric of type set, with empty value is ignored.");
         return;
@@ -578,8 +606,10 @@ static inline void statsd_process_set(STATSD_METRIC *m, const char *value) {
 // --------------------------------------------------------------------------------------------------------------------
 // statsd parsing
 
-static void statsd_process_metric(const char *name, const char *value, const char *type, const char *sampling) {
-    debug(D_STATSD, "STATSD: raw metric '%s', value '%s', type '%s', rate '%s'", name?name:"(null)", value?value:"(null)", type?type:"(null)", sampling?sampling:"(null)");
+static void statsd_process_metric(const char *name, const char *value, const char *type, const char *sampling, const char *tags) {
+    (void)tags;
+
+    debug(D_STATSD, "STATSD: raw metric '%s', value '%s', type '%s', sampling '%s', tags '%s'", name?name:"(null)", value?value:"(null)", type?type:"(null)", sampling?sampling:"(null)", tags?tags:"(null)");
 
     if(unlikely(!name || !*name)) return;
     if(unlikely(!type || !*type)) type = "m";
@@ -663,8 +693,8 @@ static inline size_t statsd_process(char *buffer, size_t size, int require_newli
 
     const char *s = buffer;
     while(*s) {
-        const char *name = NULL, *value = NULL, *type = NULL, *sampling = NULL;
-        char *name_end = NULL, *value_end = NULL, *type_end = NULL, *sampling_end = NULL;
+        const char *name = NULL, *value = NULL, *type = NULL, *sampling = NULL, *tags = NULL;
+        char *name_end = NULL, *value_end = NULL, *type_end = NULL, *sampling_end = NULL, *tags_end = NULL;
 
         s = name_end = (char *)statsd_parse_skip_up_to(name = s, ':', '|');
         if(name == name_end) {
@@ -679,10 +709,15 @@ static inline size_t statsd_process(char *buffer, size_t size, int require_newli
             s = type_end = (char *) statsd_parse_skip_up_to(type = ++s, '|', '@');
 
         if(likely(*s == '|' || *s == '@')) {
-            s = sampling_end = (char *) statsd_parse_skip_up_to(sampling = ++s, '\r', '\n');
+            s = sampling_end = (char *) statsd_parse_skip_up_to(sampling = ++s, '|', '#');
             if(*sampling == '@') sampling++;
         }
 
+        if(likely(*s == '|' || *s == '#')) {
+            s = tags_end = (char *) statsd_parse_skip_up_to(tags = ++s, '|', '|');
+            if(*tags == '#') tags++;
+        }
+
         // skip everything until the end of the line
         while(*s && *s != '\n') s++;
 
@@ -700,6 +735,7 @@ static inline size_t statsd_process(char *buffer, size_t size, int require_newli
                 , statsd_parse_field_trim(value, value_end)
                 , statsd_parse_field_trim(type, type_end)
                 , statsd_parse_field_trim(sampling, sampling_end)
+                , statsd_parse_field_trim(tags, tags_end)
         );
     }
 
@@ -997,7 +1033,7 @@ void *statsd_collector_thread(void *ptr) {
 
 #define STATSD_CONF_LINE_MAX 8192
 
-static STATSD_APP_CHART_DIM_VALUE_TYPE string2valuetype(const char *type, size_t line, const char *path, const char *filename) {
+static STATSD_APP_CHART_DIM_VALUE_TYPE string2valuetype(const char *type, size_t line, const char *filename) {
     if(!type || !*type) type = "last";
 
     if(!strcmp(type, "events")) return STATSD_APP_CHART_DIM_VALUE_TYPE_EVENTS;
@@ -1010,7 +1046,7 @@ static STATSD_APP_CHART_DIM_VALUE_TYPE string2valuetype(const char *type, size_t
     else if(!strcmp(type, "stddev")) return STATSD_APP_CHART_DIM_VALUE_TYPE_STDDEV;
     else if(!strcmp(type, "percentile")) return STATSD_APP_CHART_DIM_VALUE_TYPE_PERCENTILE;
 
-    error("STATSD: invalid type '%s' at line %zu of file '%s/%s'. Using 'last'.", type, line, path, filename);
+    error("STATSD: invalid type '%s' at line %zu of file '%s'. Using 'last'.", type, line, filename);
     return STATSD_APP_CHART_DIM_VALUE_TYPE_LAST;
 }
 
@@ -1076,19 +1112,14 @@ static STATSD_APP_CHART_DIM *add_dimension_to_app_chart(
     return dim;
 }
 
-static int statsd_readfile(const char *path, const char *filename, STATSD_APP *app, STATSD_APP_CHART *chart, DICTIONARY *dict) {
-    debug(D_STATSD, "STATSD configuration reading file '%s/%s'", path, filename);
+static int statsd_readfile(const char *filename, STATSD_APP *app, STATSD_APP_CHART *chart, DICTIONARY *dict) {
+    debug(D_STATSD, "STATSD configuration reading file '%s'", filename);
 
     char *buffer = mallocz(STATSD_CONF_LINE_MAX + 1);
 
-    if(filename[0] == '/')
-        strncpyz(buffer, filename, STATSD_CONF_LINE_MAX);
-    else
-        snprintfz(buffer, STATSD_CONF_LINE_MAX, "%s/%s", path, filename);
-
-    FILE *fp = fopen(buffer, "r");
+    FILE *fp = fopen(filename, "r");
     if(!fp) {
-        error("STATSD: cannot open file '%s'.", buffer);
+        error("STATSD: cannot open file '%s'.", filename);
         freez(buffer);
         return -1;
     }
@@ -1101,18 +1132,31 @@ static int statsd_readfile(const char *path, const char *filename, STATSD_APP *a
 
         s = trim(buffer);
         if (!s || *s == '#') {
-            debug(D_STATSD, "STATSD: ignoring line %zu of file '%s/%s', it is empty.", line, path, filename);
+            debug(D_STATSD, "STATSD: ignoring line %zu of file '%s', it is empty.", line, filename);
             continue;
         }
 
-        debug(D_STATSD, "STATSD: processing line %zu of file '%s/%s': %s", line, path, filename, buffer);
+        debug(D_STATSD, "STATSD: processing line %zu of file '%s': %s", line, filename, buffer);
 
         if(*s == 'i' && strncmp(s, "include", 7) == 0) {
             s = trim(&s[7]);
-            if(s && *s)
-                statsd_readfile(path, s, app, chart, dict);
+            if(s && *s) {
+                char *tmp;
+                if(*s == '/')
+                    tmp = strdupz(s);
+                else {
+                    // the file to be included is relative to current file
+                    // find the directory name from the file we already read
+                    char *filename2 = strdupz(filename); // copy filename, since dirname() will change it
+                    char *dir = dirname(filename2);      // find the directory part of the filename
+                    tmp = strdupz_path_subpath(dir, s);  // compose the new filename to read;
+                    freez(filename2);                    // free the filename we copied
+                }
+                statsd_readfile(tmp, app, chart, dict);
+                freez(tmp);
+            }
             else
-                error("STATSD: ignoring line %zu of file '%s/%s', include filename is empty", line, path, s);
+                error("STATSD: ignoring line %zu of file '%s', include filename is empty", line, filename);
 
             continue;
         }
@@ -1160,7 +1204,7 @@ static int statsd_readfile(const char *path, const char *filename, STATSD_APP *a
                     chart->context    = strdupz(s);
                     chart->family     = strdupz("overview");
                     chart->units      = strdupz("value");
-                    chart->priority   = STATSD_CHART_PRIORITY;
+                    chart->priority   = NETDATA_CHART_PRIO_STATSD_PRIVATE;
                     chart->chart_type = RRDSET_TYPE_LINE;
 
                     chart->next = app->charts;
@@ -1174,20 +1218,20 @@ static int statsd_readfile(const char *path, const char *filename, STATSD_APP *a
                 }
             }
             else
-                error("STATSD: ignoring line %zu ('%s') of file '%s/%s', [app] is not defined.", line, s, path, filename);
+                error("STATSD: ignoring line %zu ('%s') of file '%s', [app] is not defined.", line, s, filename);
 
             continue;
         }
 
         if(!app) {
-            error("STATSD: ignoring line %zu ('%s') of file '%s/%s', it is outside all sections.", line, s, path, filename);
+            error("STATSD: ignoring line %zu ('%s') of file '%s', it is outside all sections.", line, s, filename);
             continue;
         }
 
         char *name = s;
         char *value = strchr(s, '=');
         if(!value) {
-            error("STATSD: ignoring line %zu ('%s') of file '%s/%s', there is no = in it.", line, s, path, filename);
+            error("STATSD: ignoring line %zu ('%s') of file '%s', there is no = in it.", line, s, filename);
             continue;
         }
         *value = '\0';
@@ -1197,11 +1241,11 @@ static int statsd_readfile(const char *path, const char *filename, STATSD_APP *a
         value = trim(value);
 
         if(!name || *name == '#') {
-            error("STATSD: ignoring line %zu of file '%s/%s', name is empty.", line, path, filename);
+            error("STATSD: ignoring line %zu of file '%s', name is empty.", line, filename);
             continue;
         }
         if(!value) {
-            debug(D_CONFIG, "STATSD: ignoring line %zu of file '%s/%s', value is empty.", line, path, filename);
+            debug(D_CONFIG, "STATSD: ignoring line %zu of file '%s', value is empty.", line, filename);
             continue;
         }
 
@@ -1241,7 +1285,7 @@ static int statsd_readfile(const char *path, const char *filename, STATSD_APP *a
                     app->rrd_history_entries = 5;
             }
             else {
-                error("STATSD: ignoring line %zu ('%s') of file '%s/%s'. Unknown keyword for the [app] section.", line, name, path, filename);
+                error("STATSD: ignoring line %zu ('%s') of file '%s'. Unknown keyword for the [app] section.", line, name, filename);
                 continue;
             }
         }
@@ -1326,14 +1370,14 @@ static int statsd_readfile(const char *path, const char *filename, STATSD_APP *a
                         , (multipler && *multipler)?str2l(multipler):1
                         , (divisor && *divisor)?str2l(divisor):1
                         , flags
-                        , string2valuetype(type, line, path, filename)
+                        , string2valuetype(type, line, filename)
                 );
 
                 if(pattern)
                     dim->metric_pattern = simple_pattern_create(dim->metric, NULL, SIMPLE_PATTERN_EXACT);
             }
             else {
-                error("STATSD: ignoring line %zu ('%s') of file '%s/%s'. Unknown keyword for the [%s] section.", line, name, path, filename, chart->id);
+                error("STATSD: ignoring line %zu ('%s') of file '%s'. Unknown keyword for the [%s] section.", line, name, filename, chart->id);
                 continue;
             }
         }
@@ -1344,49 +1388,13 @@ static int statsd_readfile(const char *path, const char *filename, STATSD_APP *a
     return 0;
 }
 
-static void statsd_readdir(const char *path) {
-    size_t pathlen = strlen(path);
-
-    debug(D_STATSD, "STATSD configuration reading directory '%s'", path);
-
-    DIR *dir = opendir(path);
-    if (!dir) {
-        error("STATSD configuration cannot open directory '%s'.", path);
-        return;
-    }
-
-    struct dirent *de = NULL;
-    while ((de = readdir(dir))) {
-        size_t len = strlen(de->d_name);
-
-        if(de->d_type == DT_DIR
-           && (
-                   (de->d_name[0] == '.' && de->d_name[1] == '\0')
-                   || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
-           )) {
-            debug(D_STATSD, "STATSD: ignoring directory '%s'", de->d_name);
-            continue;
-        }
-
-        else if(de->d_type == DT_DIR) {
-            char *s = mallocz(pathlen + strlen(de->d_name) + 2);
-            strcpy(s, path);
-            strcat(s, "/");
-            strcat(s, de->d_name);
-            statsd_readdir(s);
-            freez(s);
-            continue;
-        }
-
-        else if((de->d_type == DT_LNK || de->d_type == DT_REG || de->d_type == DT_UNKNOWN) &&
-                len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) {
-            statsd_readfile(path, de->d_name, NULL, NULL, NULL);
-        }
-
-        else debug(D_STATSD, "STATSD: ignoring file '%s'", de->d_name);
-    }
+static int statsd_file_callback(const char *filename, void *data) {
+    (void)data;
+    return statsd_readfile(filename, NULL, NULL, NULL);
+}
 
-    closedir(dir);
+static inline void statsd_readdir(const char *user_path, const char *stock_path, const char *subpath) {
+    recursive_config_double_dir_load(user_path, stock_path, subpath, statsd_file_callback, NULL, 0);
 }
 
 // --------------------------------------------------------------------------------------------------------------------
@@ -1445,7 +1453,7 @@ static inline RRDSET *statsd_private_rrdset_create(
             , context         // context
             , title           // title
             , units           // units
-            , "statsd"        // plugin
+            , PLUGIN_STATSD_NAME // plugin
             , "private_chart" // module
             , priority        // priority
             , update_every    // update every
@@ -1484,7 +1492,7 @@ static inline void statsd_private_chart_gauge(STATSD_METRIC *m) {
                 , context       // context
                 , title         // title
                 , "value"       // units
-                , STATSD_CHART_PRIORITY
+                , NETDATA_CHART_PRIO_STATSD_PRIVATE
                 , statsd.update_every
                 , RRDSET_TYPE_LINE
         );
@@ -1526,7 +1534,7 @@ static inline void statsd_private_chart_counter_or_meter(STATSD_METRIC *m, const
                 , context       // context
                 , title         // title
                 , "events/s"    // units
-                , STATSD_CHART_PRIORITY
+                , NETDATA_CHART_PRIO_STATSD_PRIVATE
                 , statsd.update_every
                 , RRDSET_TYPE_AREA
         );
@@ -1568,7 +1576,7 @@ static inline void statsd_private_chart_set(STATSD_METRIC *m) {
                 , context       // context
                 , title         // title
                 , "entries"     // units
-                , STATSD_CHART_PRIORITY
+                , NETDATA_CHART_PRIO_STATSD_PRIVATE
                 , statsd.update_every
                 , RRDSET_TYPE_LINE
         );
@@ -1610,7 +1618,7 @@ static inline void statsd_private_chart_timer_or_histogram(STATSD_METRIC *m, con
                 , context       // context
                 , title         // title
                 , units         // units
-                , STATSD_CHART_PRIORITY
+                , NETDATA_CHART_PRIO_STATSD_PRIVATE
                 , statsd.update_every
                 , RRDSET_TYPE_AREA
         );
@@ -1649,14 +1657,14 @@ static inline void statsd_flush_gauge(STATSD_METRIC *m) {
     debug(D_STATSD, "flushing gauge metric '%s'", m->name);
 
     int updated = 0;
-    if(m->count && !m->reset) {
+    if(unlikely(!m->reset && m->count)) {
         m->last = (collected_number) (m->gauge.value * statsd.decimal_detail);
 
         m->reset = 1;
         updated = 1;
     }
 
-    if(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED)))
+    if(unlikely(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED))))
         statsd_private_chart_gauge(m);
 }
 
@@ -1664,14 +1672,14 @@ static inline void statsd_flush_counter_or_meter(STATSD_METRIC *m, const char *d
     debug(D_STATSD, "flushing %s metric '%s'", dim, m->name);
 
     int updated = 0;
-    if(m->count && !m->reset) {
+    if(unlikely(!m->reset && m->count)) {
         m->last = m->counter.value;
 
         m->reset = 1;
         updated = 1;
     }
 
-    if(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED)))
+    if(unlikely(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED))))
         statsd_private_chart_counter_or_meter(m, dim, family);
 }
 
@@ -1687,40 +1695,27 @@ static inline void statsd_flush_set(STATSD_METRIC *m) {
     debug(D_STATSD, "flushing set metric '%s'", m->name);
 
     int updated = 0;
-    if(m->count && !m->reset) {
+    if(unlikely(!m->reset && m->count)) {
         m->last = (collected_number)m->set.unique;
 
         m->reset = 1;
         updated = 1;
     }
+    else {
+        m->last = 0;
+    }
 
-    if(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED)))
+    if(unlikely(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED))))
         statsd_private_chart_set(m);
 }
 
 static inline void statsd_flush_timer_or_histogram(STATSD_METRIC *m, const char *dim, const char *family, const char *units) {
     debug(D_STATSD, "flushing %s metric '%s'", dim, m->name);
 
-    netdata_mutex_lock(&m->histogram.ext->mutex);
-
-    if(unlikely(!m->histogram.ext->zeroed)) {
-        // reset the metrics
-        // if we collected anything, they will be updated below
-        // this ensures that we report zeros if nothing is collected
-
-        m->histogram.ext->last_min = 0;
-        m->histogram.ext->last_max = 0;
-        m->last = 0;
-        m->histogram.ext->last_median = 0;
-        m->histogram.ext->last_stddev = 0;
-        m->histogram.ext->last_sum = 0;
-        m->histogram.ext->last_percentile = 0;
-
-        m->histogram.ext->zeroed = 1;
-    }
-
     int updated = 0;
-    if(m->count && !m->reset && m->histogram.ext->used > 0) {
+    if(unlikely(!m->reset && m->count && m->histogram.ext->used > 0)) {
+        netdata_mutex_lock(&m->histogram.ext->mutex);
+
         size_t len = m->histogram.ext->used;
         LONG_DOUBLE *series = m->histogram.ext->values;
         sort_series(series, len);
@@ -1738,6 +1733,8 @@ static inline void statsd_flush_timer_or_histogram(STATSD_METRIC *m, const char
         else
             m->histogram.ext->last_percentile = (collected_number)roundl(series[pct_len - 1] * statsd.decimal_detail);
 
+        netdata_mutex_unlock(&m->histogram.ext->mutex);
+
         debug(D_STATSD, "STATSD %s metric %s: min " COLLECTED_NUMBER_FORMAT ", max " COLLECTED_NUMBER_FORMAT ", last " COLLECTED_NUMBER_FORMAT ", pcent " COLLECTED_NUMBER_FORMAT ", median " COLLECTED_NUMBER_FORMAT ", stddev " COLLECTED_NUMBER_FORMAT ", sum " COLLECTED_NUMBER_FORMAT,
               dim, m->name, m->histogram.ext->last_min, m->histogram.ext->last_max, m->last, m->histogram.ext->last_percentile, m->histogram.ext->last_median, m->histogram.ext->last_stddev, m->histogram.ext->last_sum);
 
@@ -1745,11 +1742,24 @@ static inline void statsd_flush_timer_or_histogram(STATSD_METRIC *m, const char
         m->reset = 1;
         updated = 1;
     }
+    else if(unlikely(!m->histogram.ext->zeroed)) {
+        // reset the metrics
+        // if we collected anything, they will be updated below
+        // this ensures that we report zeros if nothing is collected
 
-    if(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED)))
-        statsd_private_chart_timer_or_histogram(m, dim, family, units);
+        m->histogram.ext->last_min = 0;
+        m->histogram.ext->last_max = 0;
+        m->last = 0;
+        m->histogram.ext->last_median = 0;
+        m->histogram.ext->last_stddev = 0;
+        m->histogram.ext->last_sum = 0;
+        m->histogram.ext->last_percentile = 0;
 
-    netdata_mutex_unlock(&m->histogram.ext->mutex);
+        m->histogram.ext->zeroed = 1;
+    }
+
+    if(unlikely(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED))))
+        statsd_private_chart_timer_or_histogram(m, dim, family, units);
 }
 
 static inline void statsd_flush_timer(STATSD_METRIC *m) {
@@ -1837,6 +1847,7 @@ static inline void link_metric_to_app_dimension(STATSD_APP *app, STATSD_METRIC *
     }
 
     chart->dimensions_linked_count++;
+    m->options |= STATSD_METRIC_OPTION_USED_IN_APPS;
     debug(D_STATSD, "metric '%s' of type %u linked with app '%s', chart '%s', dimension '%s', algorithm '%s'", m->name, m->type, app->name, chart->id, dim->name, rrd_algorithm_name(dim->algorithm));
 }
 
@@ -1980,7 +1991,7 @@ static inline void statsd_update_app_chart(STATSD_APP *app, STATSD_APP_CHART *ch
                 , chart->context            // context
                 , chart->title              // title
                 , chart->units              // units
-                , "statsd"                  // plugin
+                , PLUGIN_STATSD_NAME        // plugin
                 , chart->source             // module
                 , chart->priority           // priority
                 , statsd.update_every       // update every
@@ -2043,7 +2054,13 @@ const char *statsd_metric_type_string(STATSD_METRIC_TYPE type) {
 
 static inline void statsd_flush_index_metrics(STATSD_INDEX *index, void (*flush_metric)(STATSD_METRIC *)) {
     STATSD_METRIC *m;
+
+    // find the useful metrics (incremental = each time we are called, we check the new metrics only)
     for(m = index->first; m ; m = m->next) {
+        // since we add new metrics at the beginning
+        // check for useful charts, until the point we last checked
+        if(unlikely(is_metric_checked(m))) break;
+
         if(unlikely(!(m->options & STATSD_METRIC_OPTION_CHECKED_IN_APPS))) {
             log_access("NEW STATSD METRIC '%s': '%s'", statsd_metric_type_string(m->type), m->name);
             check_if_metric_is_for_app(index, m);
@@ -2051,7 +2068,7 @@ static inline void statsd_flush_index_metrics(STATSD_INDEX *index, void (*flush_
         }
 
         if(unlikely(!(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_CHECKED))) {
-            if(statsd.private_charts >= statsd.max_private_charts_hard) {
+            if(unlikely(statsd.private_charts >= statsd.max_private_charts_hard)) {
                 debug(D_STATSD, "STATSD: metric '%s' will not be charted, because the hard limit of the maximum number of charts has been reached.", m->name);
                 info("STATSD: metric '%s' will not be charted, because the hard limit of the maximum number of charts (%zu) has been reached. Increase the number of charts by editing netdata.conf, [statsd] section.", m->name, statsd.max_private_charts);
                 m->options &= ~STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED;
@@ -2069,6 +2086,20 @@ static inline void statsd_flush_index_metrics(STATSD_INDEX *index, void (*flush_
             m->options |= STATSD_METRIC_OPTION_PRIVATE_CHART_CHECKED;
         }
 
+        // mark it as checked
+        m->options |= STATSD_METRIC_OPTION_CHECKED;
+
+        // check if it is used in charts
+        if((m->options & (STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED|STATSD_METRIC_OPTION_USED_IN_APPS)) && !(m->options & STATSD_METRIC_OPTION_USEFUL)) {
+            m->options |= STATSD_METRIC_OPTION_USEFUL;
+            index->useful++;
+            m->next_useful = index->first_useful;
+            index->first_useful = m;
+        }
+    }
+
+    // flush all the useful metrics
+    for(m = index->first_useful; m ; m = m->next_useful) {
         flush_metric(m);
     }
 }
@@ -2130,9 +2161,9 @@ void *statsd_main(void *ptr) {
     statsd.max_private_charts_hard = (size_t)config_get_number(CONFIG_SECTION_STATSD, "max private charts hard limit", (long long)statsd.max_private_charts * 5);
     statsd.private_charts_memory_mode = rrd_memory_mode_id(config_get(CONFIG_SECTION_STATSD, "private charts memory mode", rrd_memory_mode_name(default_rrd_memory_mode)));
     statsd.private_charts_rrd_history_entries = (int)config_get_number(CONFIG_SECTION_STATSD, "private charts history", default_rrd_history_entries);
-    statsd.decimal_detail = (size_t)config_get_number(CONFIG_SECTION_STATSD, "decimal detail", (long long int)statsd.decimal_detail);
+    statsd.decimal_detail = (collected_number)config_get_number(CONFIG_SECTION_STATSD, "decimal detail", (long long int)statsd.decimal_detail);
     statsd.tcp_idle_timeout = (size_t) config_get_number(CONFIG_SECTION_STATSD, "disconnect idle tcp clients after seconds", (long long int)statsd.tcp_idle_timeout);
-    statsd.private_charts_hidden = (int)config_get_boolean(CONFIG_SECTION_STATSD, "private charts hidden", statsd.private_charts_hidden);
+    statsd.private_charts_hidden = (unsigned int)config_get_boolean(CONFIG_SECTION_STATSD, "private charts hidden", statsd.private_charts_hidden);
 
     statsd.histogram_percentile = (double)config_get_float(CONFIG_SECTION_STATSD, "histograms and timers percentile (percentThreshold)", statsd.histogram_percentile);
     if(isless(statsd.histogram_percentile, 0) || isgreater(statsd.histogram_percentile, 100)) {
@@ -2186,11 +2217,7 @@ void *statsd_main(void *ptr) {
 #endif
 
     // read custom application definitions
-    {
-        char filename[FILENAME_MAX + 1];
-        snprintfz(filename, FILENAME_MAX, "%s/statsd.d", netdata_configured_config_dir);
-        statsd_readdir(filename);
-    }
+    statsd_readdir(netdata_configured_user_config_dir, netdata_configured_stock_config_dir, "statsd.d");
 
     // ----------------------------------------------------------------------------------------------------------------
     // statsd setup
@@ -2224,7 +2251,7 @@ void *statsd_main(void *ptr) {
             , NULL
             , "Metrics in the netdata statsd database"
             , "metrics"
-            , "statsd"
+            , PLUGIN_STATSD_NAME
             , "stats"
             , 132010
             , statsd.update_every
@@ -2237,6 +2264,27 @@ void *statsd_main(void *ptr) {
     RRDDIM *rd_metrics_histogram = rrddim_add(st_metrics, "histograms", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
     RRDDIM *rd_metrics_set       = rrddim_add(st_metrics, "sets", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
 
+    RRDSET *st_useful_metrics = rrdset_create_localhost(
+            "netdata"
+            , "statsd_useful_metrics"
+            , NULL
+            , "statsd"
+            , NULL
+            , "Useful metrics in the netdata statsd database"
+            , "metrics"
+            , PLUGIN_STATSD_NAME
+            , "stats"
+            , 132010
+            , statsd.update_every
+            , RRDSET_TYPE_STACKED
+    );
+    RRDDIM *rd_useful_metrics_gauge     = rrddim_add(st_useful_metrics, "gauges", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+    RRDDIM *rd_useful_metrics_counter   = rrddim_add(st_useful_metrics, "counters", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+    RRDDIM *rd_useful_metrics_timer     = rrddim_add(st_useful_metrics, "timers", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+    RRDDIM *rd_useful_metrics_meter     = rrddim_add(st_useful_metrics, "meters", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+    RRDDIM *rd_useful_metrics_histogram = rrddim_add(st_useful_metrics, "histograms", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+    RRDDIM *rd_useful_metrics_set       = rrddim_add(st_useful_metrics, "sets", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+
     RRDSET *st_events = rrdset_create_localhost(
             "netdata"
             , "statsd_events"
@@ -2245,7 +2293,7 @@ void *statsd_main(void *ptr) {
             , NULL
             , "Events processed by the netdata statsd server"
             , "events/s"
-            , "statsd"
+            , PLUGIN_STATSD_NAME
             , "stats"
             , 132011
             , statsd.update_every
@@ -2268,7 +2316,7 @@ void *statsd_main(void *ptr) {
             , NULL
             , "Read operations made by the netdata statsd server"
             , "reads/s"
-            , "statsd"
+            , PLUGIN_STATSD_NAME
             , "stats"
             , 132012
             , statsd.update_every
@@ -2285,7 +2333,7 @@ void *statsd_main(void *ptr) {
             , NULL
             , "Bytes read by the netdata statsd server"
             , "kilobits/s"
-            , "netdata"
+            , PLUGIN_STATSD_NAME
             , "stats"
             , 132013
             , statsd.update_every
@@ -2302,7 +2350,7 @@ void *statsd_main(void *ptr) {
             , NULL
             , "Network packets processed by the netdata statsd server"
             , "packets/s"
-            , "netdata"
+            , PLUGIN_STATSD_NAME
             , "stats"
             , 132014
             , statsd.update_every
@@ -2319,7 +2367,7 @@ void *statsd_main(void *ptr) {
             , NULL
             , "statsd server TCP connects and disconnects"
             , "events"
-            , "statsd"
+            , PLUGIN_STATSD_NAME
             , "stats"
             , 132015
             , statsd.update_every
@@ -2336,7 +2384,7 @@ void *statsd_main(void *ptr) {
             , NULL
             , "statsd server TCP connected sockets"
             , "connected"
-            , "statsd"
+            , PLUGIN_STATSD_NAME
             , "stats"
             , 132016
             , statsd.update_every
@@ -2352,7 +2400,7 @@ void *statsd_main(void *ptr) {
             , NULL
             , "Private metric charts created by the netdata statsd server"
             , "charts"
-            , "statsd"
+            , PLUGIN_STATSD_NAME
             , "stats"
             , 132020
             , statsd.update_every
@@ -2368,7 +2416,7 @@ void *statsd_main(void *ptr) {
             , "netdata.statsd_cpu"
             , "NetData statsd charting thread CPU usage"
             , "milliseconds/s"
-            , "statsd"
+            , PLUGIN_STATSD_NAME
             , "stats"
             , 132001
             , statsd.update_every
@@ -2394,7 +2442,7 @@ void *statsd_main(void *ptr) {
                 , "netdata.statsd_cpu"
                 , title
                 , "milliseconds/s"
-                , "statsd"
+                , PLUGIN_STATSD_NAME
                 , "stats"
                 , 132002 + i
                 , statsd.update_every
@@ -2430,6 +2478,7 @@ void *statsd_main(void *ptr) {
 
         if(likely(hb_dt)) {
             rrdset_next(st_metrics);
+            rrdset_next(st_useful_metrics);
             rrdset_next(st_events);
             rrdset_next(st_reads);
             rrdset_next(st_bytes);
@@ -2450,6 +2499,14 @@ void *statsd_main(void *ptr) {
         rrddim_set_by_pointer(st_metrics, rd_metrics_set,          (collected_number)statsd.sets.metrics);
         rrdset_done(st_metrics);
 
+        rrddim_set_by_pointer(st_useful_metrics, rd_useful_metrics_gauge,        (collected_number)statsd.gauges.useful);
+        rrddim_set_by_pointer(st_useful_metrics, rd_useful_metrics_counter,      (collected_number)statsd.counters.useful);
+        rrddim_set_by_pointer(st_useful_metrics, rd_useful_metrics_timer,        (collected_number)statsd.timers.useful);
+        rrddim_set_by_pointer(st_useful_metrics, rd_useful_metrics_meter,        (collected_number)statsd.meters.useful);
+        rrddim_set_by_pointer(st_useful_metrics, rd_useful_metrics_histogram,    (collected_number)statsd.histograms.useful);
+        rrddim_set_by_pointer(st_useful_metrics, rd_useful_metrics_set,          (collected_number)statsd.sets.useful);
+        rrdset_done(st_useful_metrics);
+
         rrddim_set_by_pointer(st_events,  rd_events_gauge,         (collected_number)statsd.gauges.events);
         rrddim_set_by_pointer(st_events,  rd_events_counter,       (collected_number)statsd.counters.events);
         rrddim_set_by_pointer(st_events,  rd_events_timer,         (collected_number)statsd.timers.events);
diff --git a/collectors/statsd.plugin/statsd.h b/collectors/statsd.plugin/statsd.h
new file mode 100644
index 000000000..b741be76d
--- /dev/null
+++ b/collectors/statsd.plugin/statsd.h
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_STATSD_H
+#define NETDATA_STATSD_H 1
+
+#include "../../daemon/common.h"
+
+#define STATSD_LISTEN_PORT 8125
+#define STATSD_LISTEN_BACKLOG 4096
+
+#define NETDATA_PLUGIN_HOOK_STATSD \
+    { \
+        .name = "STATSD", \
+        .config_section = NULL, \
+        .config_name = NULL, \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = statsd_main \
+    },
+
+
+extern void *statsd_main(void *ptr);
+
+#endif //NETDATA_STATSD_H
diff --git a/collectors/tc.plugin/Makefile.am b/collectors/tc.plugin/Makefile.am
new file mode 100644
index 000000000..f77e67d91
--- /dev/null
+++ b/collectors/tc.plugin/Makefile.am
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+CLEANFILES = \
+	tc-qos-helper.sh \
+	$(NULL)
+
+include $(top_srcdir)/build/subst.inc
+SUFFIXES = .in
+
+dist_plugins_SCRIPTS = \
+	tc-qos-helper.sh \
+	$(NULL)
+
+dist_noinst_DATA = \
+	tc-qos-helper.sh.in \
+	README.md \
+	$(NULL)
diff --git a/collectors/tc.plugin/Makefile.in b/collectors/tc.plugin/Makefile.in
new file mode 100644
index 000000000..d336e1f0d
--- /dev/null
+++ b/collectors/tc.plugin/Makefile.in
@@ -0,0 +1,562 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
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+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
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+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
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+OPTIONAL_UUID_CLFAGS = @OPTIONAL_UUID_CLFAGS@
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+OPTIONAL_ZLIB_CLFAGS = @OPTIONAL_ZLIB_CLFAGS@
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+PTHREAD_LIBS = @PTHREAD_LIBS@
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+UUID_CFLAGS = @UUID_CFLAGS@
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+VERSION = @VERSION@
+ZLIB_CFLAGS = @ZLIB_CFLAGS@
+ZLIB_LIBS = @ZLIB_LIBS@
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+chartsdir = @chartsdir@
+configdir = @configdir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+has_jemalloc = @has_jemalloc@
+has_tcmalloc = @has_tcmalloc@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libconfigdir = @libconfigdir@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+logdir = @logdir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+nodedir = @nodedir@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+pluginsdir = @pluginsdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+pythondir = @pythondir@
+registrydir = @registrydir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+varlibdir = @varlibdir@
+webdir = @webdir@
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+CLEANFILES = \
+	tc-qos-helper.sh \
+	$(NULL)
+
+SUFFIXES = .in
+dist_plugins_SCRIPTS = \
+	tc-qos-helper.sh \
+	$(NULL)
+
+dist_noinst_DATA = \
+	tc-qos-helper.sh.in \
+	README.md \
+	$(NULL)
+
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .in
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/build/subst.inc $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu collectors/tc.plugin/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu collectors/tc.plugin/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+$(top_srcdir)/build/subst.inc:
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+install-dist_pluginsSCRIPTS: $(dist_plugins_SCRIPTS)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pluginsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pluginsdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) { files[d] = files[d] " " $$1; \
+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(pluginsdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(pluginsdir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-dist_pluginsSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || exit 0; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	       sed -e 's,.*/,,;$(transform)'`; \
+	dir='$(DESTDIR)$(pluginsdir)'; $(am__uninstall_files_from_dir)
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(SCRIPTS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(pluginsdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-dist_pluginsSCRIPTS
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-dist_pluginsSCRIPTS
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dist_pluginsSCRIPTS install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-generic pdf pdf-am ps ps-am tags-am uninstall \
+	uninstall-am uninstall-dist_pluginsSCRIPTS
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
+		-e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
+		-e 's#[@]pythondir_POST@#$(pythondir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
+		$< > $@.tmp; then \
+		mv "$@.tmp" "$@"; \
+	else \
+		rm -f "$@.tmp"; \
+		false; \
+	fi
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/tc.plugin/README.md b/collectors/tc.plugin/README.md
new file mode 100644
index 000000000..6670c491f
--- /dev/null
+++ b/collectors/tc.plugin/README.md
@@ -0,0 +1,183 @@
+## tc.plugin
+
+Live demo - **[see it in action here](https://registry.my-netdata.io/#menu_tc)** !
+
+![qos](https://cloud.githubusercontent.com/assets/2662304/14439411/b7f36254-0033-11e6-93f0-c739bb6a1c3a.gif)
+
+Netdata monitors `tc` QoS classes for all interfaces.
+
+If you also use [FireQOS](http://firehol.org/tutorial/fireqos-new-user/) it will collect
+interface and class names.
+
+There is a [shell helper](tc-qos-helper.sh.in) for this (all parsing is done by the plugin
+in `C` code - this shell script is just a configuration for the command to run to get `tc` output).
+
+The source of the tc plugin is [here](plugin_tc.c). It is somewhat complex, because a state
+machine was needed to keep track of all the `tc` classes, including the pseudo classes tc
+dynamically creates.
+
+## Motivation
+
+One category of metrics missing in Linux monitoring, is bandwidth consumption for each open
+socket (inbound and outbound traffic). So, you cannot tell how much bandwidth your web server,
+your database server, your backup, your ssh sessions, etc are using.
+
+To solve this problem, the most *adventurous* Linux monitoring tools install kernel modules to
+capture all traffic, analyze it and provide reports per application. A lot of work, CPU intensive
+and with a great degree of risk (due to the kernel modules involved which might affect the
+stability of the whole system). Not to mention that such solutions are probably better suited
+for a core linux router in your network.
+
+Others use NFACCT, the netfilter accounting module which is already part of the Linux firewall.
+However, this would require configuring a firewall on every system you want to measure bandwidth.
+
+QoS monitoring attempts to solve this in a much cleaner way.
+
+## Introduction to QoS
+
+One of the features the Linux kernel has, but it is rarely used, is its ability to
+**apply QoS on traffic**. Even most interesting is that it can apply QoS to **both inbound and
+outbound traffic**.
+
+QoS is about 2 features:
+
+1. **Classify traffic**
+
+   Classification is the process of organizing traffic in groups, called **classes**.
+   Classification can evaluate every aspect of network packets, like source and destination ports,
+   source and destination IPs, netfilter marks, etc.
+
+   When you classify traffic, you just assign a label to it. For example **I call `web server`
+   traffic, the traffic from my server's tcp/80, tcp/443 and to my server's tcp/80, tcp/443,
+   while I call `web surfing` all other tcp/80 and tcp/443 traffic**. You can use any combinations
+   you like. There is no limit.
+
+2. **Apply traffic shaping rules to these classes**
+
+   Traffic shaping is used to control how network interface bandwidth should be shared among the
+   classes. Of course we are not interested for this feature to just monitor the traffic.
+   Classification will be enough for monitoring everything.
+
+The key reasons of applying QoS on all servers (even cloud ones) are:
+
+   - **ensure administrative tasks (like ssh, dns, etc) will always have a small but guaranteed
+      bandwidth.** QoS can guarantee that services like ssh, dns, ntp, etc will always have a small
+      supply of bandwidth. So, no matter what happens, you will be able to ssh to your server and
+      DNS will always work.
+
+   - **ensure other administrative tasks will not monopolize all the available bandwidth.**
+      Services like backups, file copies, database dumps, etc can easily monopolize all the
+      available bandwidth. It is common for example a nightly backup, or a huge file transfer
+      to negatively influence the end-user experience. QoS can fix that.
+
+   - **ensure each end-user connection will get a fair cut of the available bandwidth.**
+      Several QoS queuing disciplines in Linux do this automatically, without any configuration from you.
+      The result is that new sockets are favored over older ones, so that users will get a snappier
+      experience, while others are transferring large amounts of traffic.
+   
+   - **protect the servers from DDoS attacks.**
+      When your system is under a DDoS attack, it will get a lot more bandwidth compared to the one it
+      can handle and probably your applications will crash. Setting a limit on the inbound traffic using
+      QoS, will protect your servers (throttle the requests) and depending on the size of the attack may
+      allow your legitimate users to access the server, while the attack is taking place.
+
+
+Once **traffic classification** is applied, netdata can visualize the bandwidth consumption per
+class in real-time (no configuration is needed for netdata - it will figure it out).
+
+QoS, is extremely light. You will configure it once, and this is it. It will not bother you again
+and it will not use any noticeable CPU resources, especially on application and database servers.
+
+## QoS in Linux? Have you lost your mind?
+
+Yes I know... but no, I have not!
+
+Of course, `tc` is probably **the most undocumented, complicated and unfriendly** command in Linux. 
+
+For example, for matching a simple port range in `tc`, e.g. all the high ports, from 1025 to 65535
+inclusive, you have to match these:
+
+```
+1025/0xffff 1026/0xfffe 1028/0xfffc  1032/0xfff8  1040/0xfff0
+1056/0xffe0 1088/0xffc0 1152/0xff80  1280/0xff00  1536/0xfe00
+2048/0xf800 4096/0xf000 8192/0xe000 16384/0xc000 32768/0x8000
+```
+
+I know what you are thinking right now! **And I agree!**
+
+This is why I wrote **[FireQOS](https://firehol.org/tutorial/fireqos-new-user/)**, a tool to
+simplify QoS management in Linux.
+
+The **[FireHOL](https://firehol.org/)** package already distributes **[FireQOS](https://firehol.org/tutorial/fireqos-new-user/)**.
+Check the **[FireQOS tutorial](https://firehol.org/tutorial/fireqos-new-user/)**
+to learn how to write your own QoS configuration.
+
+With **[FireQOS](https://firehol.org/tutorial/fireqos-new-user/)**, it is **really simple for everyone
+to use QoS in Linux**. Just install the package `firehol`. It should already be available for your
+distribution. If not, check the **[FireHOL Installation Guide](https://firehol.org/installing/)**.
+After that, you will have the `fireqos` command.
+
+This is the file `/etc/firehol/fireqos.conf` we use at the netdata demo site:
+
+```sh
+    # configure the netdata ports
+    server_netdata_ports="tcp/19999"
+
+    interface eth0 world bidirectional ethernet balanced rate 50Mbit
+       class arp
+          match arp
+
+       class icmp
+          match icmp
+
+       class dns commit 1Mbit
+          server dns
+          client dns
+
+       class ntp
+          server ntp
+          client ntp
+
+       class ssh commit 2Mbit
+          server ssh
+          client ssh
+
+       class rsync commit 2Mbit max 10Mbit
+          server rsync
+          client rsync
+
+       class web_server commit 40Mbit
+          server http
+          server netdata
+
+       class client
+          client surfing
+
+       class nms commit 1Mbit
+          match input src 10.2.3.5
+```
+
+Nothing more is needed. You just run `fireqos start` to apply this configuration, restart netdata
+and you have real-time visualization of the bandwidth consumption of your applications. FireQOS is
+not a daemon. It will just convert the configuration to `tc` commands. It will run them and it will
+exit.
+
+**IMPORTANT**: If you copy this configuration to apply it to your system, please adapt the
+speeds - experiment in non-production environments to learn the tool, before applying it on
+your servers.
+
+And this is what you are going to get:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/14436322/c91d90a4-0024-11e6-9fb1-57cdef1580df.png)
+
+---
+
+## More examples:
+
+This is QoS from a linux router. Check these features:
+
+1. It is real-time (per second updates)
+2. QoS really works in Linux - check that the `background` traffic is squeezed when `surfing` needs it.
+
+![test2](https://cloud.githubusercontent.com/assets/2662304/14093004/68966020-f553-11e5-98fe-ffee2086fafd.gif)
+
diff --git a/src/plugin_tc.c b/collectors/tc.plugin/plugin_tc.c
index 4b6d84e11..083cc2986 100644
--- a/src/plugin_tc.c
+++ b/collectors/tc.plugin/plugin_tc.c
@@ -1,6 +1,9 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_tc.h"
 
 #define RRD_TYPE_TC "tc"
+#define PLUGIN_TC_NAME "tc.plugin"
 
 // ----------------------------------------------------------------------------
 // /sbin/tc processor
@@ -391,9 +394,9 @@ static inline void tc_device_commit(struct tc_device *d) {
                     , RRD_TYPE_TC ".qos"
                     , "Class Usage"
                     , "kilobits/s"
-                    , "tc"
+                    , PLUGIN_TC_NAME
                     , NULL
-                    , 7000
+                    , NETDATA_CHART_PRIO_TC_QOS
                     , localhost->rrd_update_every
                     , d->enabled_all_classes_qdiscs ? RRDSET_TYPE_LINE : RRDSET_TYPE_STACKED
             );
@@ -402,7 +405,7 @@ static inline void tc_device_commit(struct tc_device *d) {
             rrdset_next(d->st_bytes);
             if(unlikely(d->name_updated)) rrdset_set_name(d->st_bytes, d->name);
 
-            // FIXME
+            // TODO
             // update the family
         }
 
@@ -439,9 +442,9 @@ static inline void tc_device_commit(struct tc_device *d) {
                     , RRD_TYPE_TC ".qos_packets"
                     , "Class Packets"
                     , "packets/s"
-                    , "tc"
+                    , PLUGIN_TC_NAME
                     , NULL
-                    , 7010
+                    , NETDATA_CHART_PRIO_TC_QOS_PACKETS
                     , localhost->rrd_update_every
                     , d->enabled_all_classes_qdiscs ? RRDSET_TYPE_LINE : RRDSET_TYPE_STACKED
             );
@@ -455,7 +458,7 @@ static inline void tc_device_commit(struct tc_device *d) {
                 rrdset_set_name(d->st_packets, name);
             }
 
-            // FIXME
+            // TODO
             // update the family
         }
 
@@ -492,9 +495,9 @@ static inline void tc_device_commit(struct tc_device *d) {
                     , RRD_TYPE_TC ".qos_dropped"
                     , "Class Dropped Packets"
                     , "packets/s"
-                    , "tc"
+                    , PLUGIN_TC_NAME
                     , NULL
-                    , 7020
+                    , NETDATA_CHART_PRIO_TC_QOS_DROPPED
                     , localhost->rrd_update_every
                     , d->enabled_all_classes_qdiscs ? RRDSET_TYPE_LINE : RRDSET_TYPE_STACKED
             );
@@ -508,7 +511,7 @@ static inline void tc_device_commit(struct tc_device *d) {
                 rrdset_set_name(d->st_dropped, name);
             }
 
-            // FIXME
+            // TODO
             // update the family
         }
 
@@ -545,9 +548,9 @@ static inline void tc_device_commit(struct tc_device *d) {
                     , RRD_TYPE_TC ".qos_tokens"
                     , "Class Tokens"
                     , "tokens"
-                    , "tc"
+                    , PLUGIN_TC_NAME
                     , NULL
-                    , 7030
+                    , NETDATA_CHART_PRIO_TC_QOS_TOCKENS
                     , localhost->rrd_update_every
                     , RRDSET_TYPE_LINE
             );
@@ -561,7 +564,7 @@ static inline void tc_device_commit(struct tc_device *d) {
                 rrdset_set_name(d->st_tokens, name);
             }
 
-            // FIXME
+            // TODO
             // update the family
         }
 
@@ -599,9 +602,9 @@ static inline void tc_device_commit(struct tc_device *d) {
                     , RRD_TYPE_TC ".qos_ctokens"
                     , "Class cTokens"
                     , "ctokens"
-                    , "tc"
+                    , PLUGIN_TC_NAME
                     , NULL
-                    , 7040
+                    , NETDATA_CHART_PRIO_TC_QOS_CTOCKENS
                     , localhost->rrd_update_every
                     , RRDSET_TYPE_LINE
             );
@@ -616,7 +619,7 @@ static inline void tc_device_commit(struct tc_device *d) {
                 rrdset_set_name(d->st_ctokens, name);
             }
 
-            // FIXME
+            // TODO
             // update the family
         }
 
@@ -857,7 +860,7 @@ void *tc_main(void *ptr) {
 
     struct rusage thread;
 
-    char buffer[TC_LINE_MAX+1] = "";
+    char command[FILENAME_MAX + 1];
     char *words[PLUGINSD_MAX_WORDS] = { NULL };
 
     uint32_t BEGIN_HASH = simple_hash("BEGIN");
@@ -876,23 +879,24 @@ void *tc_main(void *ptr) {
 #endif
     uint32_t first_hash;
 
-    snprintfz(buffer, TC_LINE_MAX, "%s/tc-qos-helper.sh", netdata_configured_plugins_dir);
-    char *tc_script = config_get("plugin:tc", "script to run to get tc values", buffer);
+    snprintfz(command, TC_LINE_MAX, "%s/tc-qos-helper.sh", netdata_configured_plugins_dir);
+    char *tc_script = config_get("plugin:tc", "script to run to get tc values", command);
 
     while(!netdata_exit) {
         FILE *fp;
         struct tc_device *device = NULL;
         struct tc_class *class = NULL;
 
-        snprintfz(buffer, TC_LINE_MAX, "exec %s %d", tc_script, localhost->rrd_update_every);
-        debug(D_TC_LOOP, "executing '%s'", buffer);
+        snprintfz(command, TC_LINE_MAX, "exec %s %d", tc_script, localhost->rrd_update_every);
+        debug(D_TC_LOOP, "executing '%s'", command);
 
-        fp = mypopen(buffer, (pid_t *)&tc_child_pid);
+        fp = mypopen(command, (pid_t *)&tc_child_pid);
         if(unlikely(!fp)) {
-            error("TC: Cannot popen(\"%s\", \"r\").", buffer);
+            error("TC: Cannot popen(\"%s\", \"r\").", command);
             goto cleanup;
         }
 
+        char buffer[TC_LINE_MAX+1] = "";
         while(fgets(buffer, TC_LINE_MAX, fp) != NULL) {
             if(unlikely(netdata_exit)) break;
 
@@ -1074,9 +1078,9 @@ void *tc_main(void *ptr) {
                             , NULL
                             , "NetData TC CPU usage"
                             , "milliseconds/s"
-                            , "tc"
+                            , PLUGIN_TC_NAME
                             , NULL
-                            , 135000
+                            , NETDATA_CHART_PRIO_NETDATA_TC_CPU
                             , localhost->rrd_update_every
                             , RRDSET_TYPE_STACKED
                     );
@@ -1101,9 +1105,9 @@ void *tc_main(void *ptr) {
                             , NULL
                             , "NetData TC script execution"
                             , "milliseconds/run"
-                            , "tc"
+                            , PLUGIN_TC_NAME
                             , NULL
-                            , 135001
+                            , NETDATA_CHART_PRIO_NETDATA_TC_TIME
                             , localhost->rrd_update_every
                             , RRDSET_TYPE_AREA
                     );
diff --git a/collectors/tc.plugin/plugin_tc.h b/collectors/tc.plugin/plugin_tc.h
new file mode 100644
index 000000000..c64658415
--- /dev/null
+++ b/collectors/tc.plugin/plugin_tc.h
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_PLUGIN_TC_H
+#define NETDATA_PLUGIN_TC_H 1
+
+#include "../../daemon/common.h"
+
+#if (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_TC \
+    { \
+        .name = "PLUGIN[tc]", \
+        .config_section = CONFIG_SECTION_PLUGINS, \
+        .config_name = "tc", \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = tc_main \
+    },
+
+extern void *tc_main(void *ptr);
+
+#else // (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_TC
+
+#endif // (TARGET_OS == OS_LINUX)
+
+
+#endif /* NETDATA_PLUGIN_TC_H */
+
diff --git a/plugins.d/tc-qos-helper.sh b/collectors/tc.plugin/tc-qos-helper.sh
index 9153f22e2..b49d1f509 100755..100644
--- a/plugins.d/tc-qos-helper.sh
+++ b/collectors/tc.plugin/tc-qos-helper.sh
@@ -3,7 +3,7 @@
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 # This script is a helper to allow netdata collect tc data.
 # tc output parsing has been implemented in C, inside netdata
@@ -14,6 +14,47 @@ export LC_ALL=C
 
 
 # -----------------------------------------------------------------------------
+# logging functions
+
+PROGRAM_FILE="$0"
+PROGRAM_NAME="$(basename $0)"
+PROGRAM_NAME="${PROGRAM_NAME/.plugin}"
+
+logdate() {
+    date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+    local status="${1}"
+    shift
+
+    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+    log WARNING "${@}"
+}
+
+error() {
+    log ERROR "${@}"
+}
+
+info() {
+    log INFO "${@}"
+}
+
+fatal() {
+    log FATAL "${@}"
+    exit 1
+}
+
+debug=0
+debug() {
+    [ $debug -eq 1 ] && log DEBUG "${@}"
+}
+
+# -----------------------------------------------------------------------------
 # find /var/run/fireqos
 
 # the default
@@ -52,60 +93,24 @@ if [ ! -d "${fireqos_run_dir}" ]
             if [ -d "${LOCALSTATEDIR}/run/fireqos" ]
                 then
                 fireqos_run_dir="${LOCALSTATEDIR}/run/fireqos"
+            else
+                warning "FireQoS is installed as '${fireqos}', its installation config at '${fireqos_exec_dir}/install.config' specifies local state data at '${LOCALSTATEDIR}/run/fireqos', but this directory is not found or is not readable (check the permissions of its parents)."
             fi
+        else
+            warning "Although FireQoS is installed on this system as '${fireqos}', I cannot find/read its installation configuration at '${fireqos_exec_dir}/install.config'."
         fi
+    else
+        warning "FireQoS is not installed on this system. Use FireQoS to apply traffic QoS and expose the class names to netdata. Check https://github.com/netdata/netdata/wiki/You-should-install-QoS-on-all-your-servers"
     fi
 fi
 
 # -----------------------------------------------------------------------------
-# logging functions
-
-PROGRAM_FILE="$0"
-PROGRAM_NAME="$(basename $0)"
-PROGRAM_NAME="${PROGRAM_NAME/.plugin}"
-
-logdate() {
-    date "+%Y-%m-%d %H:%M:%S"
-}
-
-log() {
-    local status="${1}"
-    shift
-
-    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
-
-}
-
-warning() {
-    log WARNING "${@}"
-}
-
-error() {
-    log ERROR "${@}"
-}
-
-info() {
-    log INFO "${@}"
-}
-
-fatal() {
-    log FATAL "${@}"
-    exit 1
-}
-
-debug=0
-debug() {
-    [ $debug -eq 1 ] && log DEBUG "${@}"
-}
-
-
-# -----------------------------------------------------------------------------
 
 [ -z "${NETDATA_PLUGINS_DIR}" ] && NETDATA_PLUGINS_DIR="$(dirname "${0}")"
-[ -z "${NETDATA_CONFIG_DIR}" ] && NETDATA_CONFIG_DIR="$(dirname "${0}")/../../../../etc/netdata"
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="/usr/local/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/local/lib/netdata/conf.d"
 
 plugins_dir="${NETDATA_PLUGINS_DIR}"
-config_dir="${NETDATA_CONFIG_DIR}"
 tc="$(which tc 2>/dev/null || command -v tc 2>/dev/null)"
 
 
@@ -134,10 +139,17 @@ update_every=$((t))
 # -----------------------------------------------------------------------------
 # allow the user to override our defaults
 
-if [ -f "${config_dir}/tc-qos-helper.conf" ]
-    then
-    source "${config_dir}/tc-qos-helper.conf"
-fi
+for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/tc-qos-helper.conf" "${NETDATA_USER_CONFIG_DIR}/tc-qos-helper.conf"
+do
+    if [ -f "${CONFIG}" ]
+        then
+        info "Loading config file '${CONFIG}'..."
+        source "${CONFIG}"
+        [ $? -ne 0 ] && error "Failed to load config file '${CONFIG}'."
+    else
+        warning "Cannot find file '${CONFIG}'."
+    fi
+done
 
 case "${tc_show}" in
     qdisc|class)
diff --git a/collectors/tc.plugin/tc-qos-helper.sh.in b/collectors/tc.plugin/tc-qos-helper.sh.in
new file mode 100755
index 000000000..6f6b0a591
--- /dev/null
+++ b/collectors/tc.plugin/tc-qos-helper.sh.in
@@ -0,0 +1,315 @@
+#!/usr/bin/env bash
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This script is a helper to allow netdata collect tc data.
+# tc output parsing has been implemented in C, inside netdata
+# This script allows setting names to dimensions.
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+
+# -----------------------------------------------------------------------------
+# logging functions
+
+PROGRAM_FILE="$0"
+PROGRAM_NAME="$(basename $0)"
+PROGRAM_NAME="${PROGRAM_NAME/.plugin}"
+
+logdate() {
+    date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+    local status="${1}"
+    shift
+
+    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+    log WARNING "${@}"
+}
+
+error() {
+    log ERROR "${@}"
+}
+
+info() {
+    log INFO "${@}"
+}
+
+fatal() {
+    log FATAL "${@}"
+    exit 1
+}
+
+debug=0
+debug() {
+    [ $debug -eq 1 ] && log DEBUG "${@}"
+}
+
+# -----------------------------------------------------------------------------
+# find /var/run/fireqos
+
+# the default
+fireqos_run_dir="/var/run/fireqos"
+
+function realdir {
+    local r="$1"
+    local t=$(readlink "$r")
+
+    while [ "$t" ]
+        do
+        r=$(cd $(dirname "$r") && cd $(dirname "$t") && pwd -P)/$(basename "$t")
+        t=$(readlink "$r")
+    done
+
+    dirname "$r"
+}
+
+if [ ! -d "${fireqos_run_dir}" ]
+    then
+
+    # the fireqos executable - we will use it to find its config
+    fireqos="$(which fireqos 2>/dev/null || command -v fireqos 2>/dev/null)"
+
+    if [ ! -z "${fireqos}" ]
+        then
+
+        fireqos_exec_dir="$(realdir ${fireqos})"
+
+        if [ ! -z "${fireqos_exec_dir}" -a "${fireqos_exec_dir}" != "." -a -f "${fireqos_exec_dir}/install.config" ]
+            then
+
+            LOCALSTATEDIR=
+            source "${fireqos_exec_dir}/install.config"
+
+            if [ -d "${LOCALSTATEDIR}/run/fireqos" ]
+                then
+                fireqos_run_dir="${LOCALSTATEDIR}/run/fireqos"
+            else
+                warning "FireQoS is installed as '${fireqos}', its installation config at '${fireqos_exec_dir}/install.config' specifies local state data at '${LOCALSTATEDIR}/run/fireqos', but this directory is not found or is not readable (check the permissions of its parents)."
+            fi
+        else
+            warning "Although FireQoS is installed on this system as '${fireqos}', I cannot find/read its installation configuration at '${fireqos_exec_dir}/install.config'."
+        fi
+    else
+        warning "FireQoS is not installed on this system. Use FireQoS to apply traffic QoS and expose the class names to netdata. Check https://github.com/netdata/netdata/wiki/You-should-install-QoS-on-all-your-servers"
+    fi
+fi
+
+# -----------------------------------------------------------------------------
+
+[ -z "${NETDATA_PLUGINS_DIR}" ] && NETDATA_PLUGINS_DIR="$(dirname "${0}")"
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="@configdir_POST@"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="@libconfigdir_POST@"
+
+plugins_dir="${NETDATA_PLUGINS_DIR}"
+tc="$(which tc 2>/dev/null || command -v tc 2>/dev/null)"
+
+
+# -----------------------------------------------------------------------------
+# user configuration
+
+# time in seconds to refresh QoS class/qdisc names
+qos_get_class_names_every=120
+
+# time in seconds to exit - netdata will restart the script
+qos_exit_every=3600
+
+# what to use? classes or qdiscs?
+tc_show="qdisc" # can also be "class"
+
+
+# -----------------------------------------------------------------------------
+# check if we have a valid number for interval
+
+t=${1}
+update_every=$((t))
+[ $((update_every)) -lt 1 ] && update_every=${NETDATA_UPDATE_EVERY}
+[ $((update_every)) -lt 1 ] && update_every=1
+
+
+# -----------------------------------------------------------------------------
+# allow the user to override our defaults
+
+for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/tc-qos-helper.conf" "${NETDATA_USER_CONFIG_DIR}/tc-qos-helper.conf"
+do
+    if [ -f "${CONFIG}" ]
+        then
+        info "Loading config file '${CONFIG}'..."
+        source "${CONFIG}"
+        [ $? -ne 0 ] && error "Failed to load config file '${CONFIG}'."
+    else
+        warning "Cannot find file '${CONFIG}'."
+    fi
+done
+
+case "${tc_show}" in
+    qdisc|class)
+        ;;
+
+    *)
+        error "tc_show variable can be either 'qdisc' or 'class' but is set to '${tc_show}'. Assuming it is 'qdisc'."
+        tc_show="qdisc"
+        ;;
+esac
+
+
+# -----------------------------------------------------------------------------
+# default sleep function
+
+LOOPSLEEPMS_LASTWORK=0
+loopsleepms() {
+    sleep $1
+}
+
+# if found and included, this file overwrites loopsleepms()
+# with a high resolution timer function for precise looping.
+. "${plugins_dir}/loopsleepms.sh.inc"
+
+
+# -----------------------------------------------------------------------------
+# final checks we can run
+
+if [ -z "${tc}" -o ! -x "${tc}" ]
+    then
+    fatal "cannot find command 'tc' in this system."
+fi
+
+tc_devices=
+fix_names=
+
+# -----------------------------------------------------------------------------
+
+setclassname() {
+    if [ "${tc_show}" = "qdisc" ]
+        then
+        echo "SETCLASSNAME $4 $2"
+    else
+        echo "SETCLASSNAME $3 $2"
+    fi
+}
+
+show_tc_cls() {
+    [ "${tc_show}" = "qdisc" ] && return 1
+
+    local x="${1}"
+
+    if [ -f /etc/iproute2/tc_cls ]
+    then
+        local classid name rest
+        while read classid name rest
+        do
+            [ -z "${classid}" -o -z "${name}" -o "${classid}" = "#" -o "${name}" = "#" -o "${classid:0:1}" = "#" -o "${name:0:1}" = "#" ] && continue
+            setclassname "" "${name}" "${classid}"
+        done </etc/iproute2/tc_cls
+        return 0
+    fi
+    return 1
+}
+
+show_fireqos_names() {
+    local x="${1}" name n interface_dev interface_classes interface_classes_monitor
+
+    if [ -f "${fireqos_run_dir}/ifaces/${x}" ]
+    then
+        name="$(<"${fireqos_run_dir}/ifaces/${x}")"
+        echo "SETDEVICENAME ${name}"
+
+        interface_dev=
+        interface_classes=
+        interface_classes_monitor=
+        source "${fireqos_run_dir}/${name}.conf"
+        for n in ${interface_classes_monitor}
+        do
+            setclassname ${n//|/ }
+        done
+        [ ! -z "${interface_dev}" ] && echo "SETDEVICEGROUP ${interface_dev}"
+
+        return 0
+    fi
+
+    return 1
+}
+
+show_tc() {
+    local x="${1}"
+
+    echo "BEGIN ${x}"
+
+    # netdata can parse the output of tc
+    ${tc} -s ${tc_show} show dev ${x}
+
+    # check FireQOS names for classes
+    if [ ! -z "${fix_names}" ]
+    then
+        show_fireqos_names "${x}" || show_tc_cls "${x}"
+    fi
+
+    echo "END ${x}"
+}
+
+find_tc_devices() {
+    local count=0 devs= dev rest l
+
+    # find all the devices in the system
+    # without forking
+    while IFS=":| " read dev rest
+    do
+        count=$((count + 1))
+        [ ${count} -le 2 ] && continue
+        devs="${devs} ${dev}"
+    done </proc/net/dev
+
+    # from all the devices find the ones
+    # that have QoS defined
+    # unfortunately, one fork per device cannot be avoided
+    tc_devices=
+    for dev in ${devs}
+    do
+        l="$(${tc} class show dev ${dev} 2>/dev/null)"
+        [ ! -z "${l}" ] && tc_devices="${tc_devices} ${dev}"
+    done
+}
+
+# update devices and class names
+# once every 2 minutes
+names_every=$((qos_get_class_names_every / update_every))
+
+# exit this script every hour
+# it will be restarted automatically
+exit_after=$((qos_exit_every / update_every))
+
+c=0
+gc=0
+while [ 1 ]
+do
+    fix_names=
+    c=$((c + 1))
+    gc=$((gc + 1))
+
+    if [ ${c} -le 1 -o ${c} -ge ${names_every} ]
+    then
+        c=1
+        fix_names="YES"
+        find_tc_devices
+    fi
+
+    for d in ${tc_devices}
+    do
+        show_tc ${d}
+    done
+
+    echo "WORKTIME ${LOOPSLEEPMS_LASTWORK}"
+
+    loopsleepms ${update_every}
+
+    [ ${gc} -gt ${exit_after} ] && exit 0
+done
diff --git a/conf.d/Makefile.am b/conf.d/Makefile.am
deleted file mode 100644
index d79bb5ab8..000000000
--- a/conf.d/Makefile.am
+++ /dev/null
@@ -1,160 +0,0 @@
-#
-# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
-#
-MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
-
-dist_config_DATA = \
-    apps_groups.conf \
-    charts.d.conf \
-    fping.conf \
-    node.d.conf \
-    python.d.conf \
-    health_alarm_notify.conf \
-    health_email_recipients.conf \
-    stream.conf \
-    $(NULL)
-
-nodeconfigdir=$(configdir)/node.d
-dist_nodeconfig_DATA = \
-    node.d/README.md \
-    node.d/fronius.conf.md \
-    node.d/named.conf.md \
-    node.d/sma_webbox.conf.md \
-    node.d/snmp.conf.md \
-    node.d/stiebeleltron.conf.md \
-    $(NULL)
-
-pythonconfigdir=$(configdir)/python.d
-dist_pythonconfig_DATA = \
-    python.d/apache.conf \
-    python.d/beanstalk.conf \
-    python.d/bind_rndc.conf \
-    python.d/ceph.conf \
-    python.d/chrony.conf \
-    python.d/couchdb.conf \
-    python.d/cpufreq.conf \
-    python.d/dns_query_time.conf \
-    python.d/dnsdist.conf \
-    python.d/dovecot.conf \
-    python.d/elasticsearch.conf \
-    python.d/example.conf \
-    python.d/exim.conf \
-    python.d/fail2ban.conf \
-    python.d/freeradius.conf \
-    python.d/go_expvar.conf \
-    python.d/haproxy.conf \
-    python.d/hddtemp.conf \
-    python.d/httpcheck.conf \
-    python.d/icecast.conf \
-    python.d/ipfs.conf \
-    python.d/isc_dhcpd.conf \
-    python.d/mdstat.conf \
-    python.d/memcached.conf \
-    python.d/mongodb.conf \
-    python.d/mysql.conf \
-    python.d/nginx.conf \
-    python.d/nginx_plus.conf \
-    python.d/nsd.conf \
-    python.d/ntpd.conf \
-    python.d/ovpn_status_log.conf \
-    python.d/phpfpm.conf \
-    python.d/portcheck.conf \
-    python.d/postfix.conf \
-    python.d/postgres.conf \
-    python.d/powerdns.conf \
-    python.d/rabbitmq.conf \
-    python.d/redis.conf \
-    python.d/retroshare.conf \
-    python.d/samba.conf \
-    python.d/sensors.conf \
-    python.d/springboot.conf \
-    python.d/squid.conf \
-    python.d/smartd_log.conf \
-    python.d/tomcat.conf \
-    python.d/traefik.conf \
-    python.d/varnish.conf \
-    python.d/web_log.conf \
-    $(NULL)
-
-healthconfigdir=$(configdir)/health.d
-
-dist_healthconfig_DATA = \
-    health.d/apache.conf \
-    health.d/backend.conf \
-    health.d/beanstalkd.conf \
-    health.d/bind_rndc.conf \
-    health.d/btrfs.conf \
-    health.d/ceph.conf \
-    health.d/cpu.conf \
-    health.d/couchdb.conf \
-    health.d/disks.conf \
-    health.d/elasticsearch.conf \
-    health.d/entropy.conf \
-    health.d/fping.conf \
-    health.d/fronius.conf \
-    health.d/haproxy.conf \
-    health.d/httpcheck.conf \
-    health.d/ipc.conf \
-    health.d/ipfs.conf \
-    health.d/ipmi.conf \
-    health.d/isc_dhcpd.conf \
-    health.d/lighttpd.conf \
-    health.d/mdstat.conf \
-    health.d/memcached.conf \
-    health.d/memory.conf \
-    health.d/mongodb.conf \
-    health.d/mysql.conf \
-    health.d/named.conf \
-    health.d/net.conf \
-    health.d/netfilter.conf \
-    health.d/nginx.conf \
-    health.d/nginx_plus.conf \
-    health.d/portcheck.conf \
-    health.d/postgres.conf \
-    health.d/qos.conf \
-    health.d/ram.conf \
-    health.d/redis.conf \
-    health.d/retroshare.conf \
-    health.d/softnet.conf \
-    health.d/squid.conf \
-    health.d/stiebeleltron.conf \
-    health.d/swap.conf \
-    health.d/tcp_conn.conf \
-    health.d/tcp_listen.conf \
-    health.d/tcp_mem.conf \
-    health.d/tcp_orphans.conf \
-    health.d/tcp_resets.conf \
-    health.d/udp_errors.conf \
-    health.d/varnish.conf \
-    health.d/web_log.conf \
-    health.d/zfs.conf \
-    $(NULL)
-
-chartsconfigdir=$(configdir)/charts.d
-dist_chartsconfig_DATA = \
-    charts.d/apache.conf \
-    charts.d/apcupsd.conf \
-    charts.d/cpufreq.conf \
-    charts.d/exim.conf \
-    charts.d/libreswan.conf \
-    charts.d/load_average.conf \
-    charts.d/mysql.conf \
-    charts.d/nut.conf \
-    charts.d/phpfpm.conf \
-    charts.d/sensors.conf \
-    charts.d/tomcat.conf \
-    charts.d/ap.conf \
-    charts.d/cpu_apps.conf \
-    charts.d/example.conf \
-    charts.d/hddtemp.conf \
-    charts.d/mem_apps.conf \
-    charts.d/nginx.conf \
-    charts.d/opensips.conf \
-    charts.d/postfix.conf \
-    charts.d/squid.conf \
-    $(NULL)
-
-statsdconfigdir=$(configdir)/statsd.d
-dist_statsdconfig_DATA = \
-    statsd.d/example.conf \
-    $(NULL)
diff --git a/conf.d/health.d/tcp_listen.conf b/conf.d/health.d/tcp_listen.conf
deleted file mode 100644
index 957964ae4..000000000
--- a/conf.d/health.d/tcp_listen.conf
+++ /dev/null
@@ -1,27 +0,0 @@
-# -----------------------------------------------------------------------------
-# tcp listen sockets issues
-
-   alarm: 1m_ipv4_tcp_listen_overflows
-      on: ipv4.tcplistenissues
-      os: linux freebsd
-   hosts: *
-  lookup: sum -60s unaligned absolute of ListenOverflows
-   units: overflows
-   every: 10s
-    crit: $this > 0
-   delay: up 0 down 5m multiplier 1.5 max 1h
-    info: the number of TCP listen socket overflows during the last minute
-      to: sysadmin
-
-   alarm: 1m_ipv4_tcp_listen_drops
-      on: ipv4.tcplistenissues
-      os: linux
-   hosts: *
-  lookup: sum -60s unaligned absolute of ListenDrops
-   units: drops
-   every: 10s
-    crit: $this > 0
-   delay: up 0 down 5m multiplier 1.5 max 1h
-    info: the number of TCP listen socket drops during the last minute
-      to: sysadmin
-
diff --git a/conf.d/node.d/README.md b/conf.d/node.d/README.md
deleted file mode 100644
index 45e3d02a6..000000000
--- a/conf.d/node.d/README.md
+++ /dev/null
@@ -1,7 +0,0 @@
-`node.d.plugin` modules accept configuration in JSON format.
-
-Unfortunately, JSON files do not accept comments. So, the best way to describe them is to have markdown text files with instructions.
-
-JSON has a very strict formatting. If you get errors from netdata at `/var/log/netdata/error.log` that a certain configuration file cannot be loaded, we suggest to verify it at [http://jsonlint.com/](http://jsonlint.com/).
-
-The files in this directory, provide usable examples for configuring each `node.d.plugin` module.
diff --git a/config.h.in b/config.h.in
index 1e817fb3a..fd7bc5eb8 100644
--- a/config.h.in
+++ b/config.h.in
@@ -59,6 +59,9 @@
    */
 #undef HAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT
 
+/* Define to 1 if you have the `getpriority' function. */
+#undef HAVE_GETPRIORITY
+
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
@@ -102,6 +105,12 @@
 /* Define to 1 if you have the <resolv.h> header file. */
 #undef HAVE_RESOLV_H
 
+/* Define to 1 if you have the `sched_getparam' function. */
+#undef HAVE_SCHED_GETPARAM
+
+/* Define to 1 if you have the `sched_getscheduler' function. */
+#undef HAVE_SCHED_GETSCHEDULER
+
 /* Define to 1 if you have the `sched_get_priority_max' function. */
 #undef HAVE_SCHED_GET_PRIORITY_MAX
 
@@ -114,6 +123,9 @@
 /* Define 1 if you have setns() function */
 #undef HAVE_SETNS
 
+/* Define to 1 if you have the `setpriority' function. */
+#undef HAVE_SETPRIORITY
+
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
@@ -132,15 +144,27 @@
 /* Define to 1 if the system has the type `struct timespec'. */
 #undef HAVE_STRUCT_TIMESPEC
 
+/* Define to 1 if you have the <sys/mount.h> header file. */
+#undef HAVE_SYS_MOUNT_H
+
 /* Define to 1 if you have the <sys/prctl.h> header file. */
 #undef HAVE_SYS_PRCTL_H
 
+/* Define to 1 if you have the <sys/statfs.h> header file. */
+#undef HAVE_SYS_STATFS_H
+
+/* Define to 1 if you have the <sys/statvfs.h> header file. */
+#undef HAVE_SYS_STATVFS_H
+
 /* Define to 1 if you have the <sys/stat.h> header file. */
 #undef HAVE_SYS_STAT_H
 
 /* Define to 1 if you have the <sys/types.h> header file. */
 #undef HAVE_SYS_TYPES_H
 
+/* Define to 1 if you have the <sys/vfs.h> header file. */
+#undef HAVE_SYS_VFS_H
+
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 
diff --git a/configs.signatures b/configs.signatures
index 1db5050d6..afc8dbe56 100644
--- a/configs.signatures
+++ b/configs.signatures
@@ -1,4 +1,5 @@
 declare -A configs_signatures=(
+  ['00049600c2f9237e6c46b8b0f703c13c']='health.d/bcache.conf'
   ['00403e687213f3b7db9bf4563a5a92cc']='python.d/isc_dhcpd.conf'
   ['0056936ce99788ed9ae1c611c87aa6d8']='apps_groups.conf'
   ['007fc019fb32e952b509d455c016a002']='health.d/tcp_resets.conf'
@@ -8,8 +9,10 @@ declare -A configs_signatures=(
   ['0147c7e8f8f57e37c5dade4e8aacacf9']='python.d/example.conf'
   ['017036c1dc32c9312b2704b839bd078f']='python.d/haproxy.conf'
   ['01c54057e0ca55b5bb49df1662d6b8c3']='python.d/web_log.conf'
+  ['024f4a6a431bcbc6acdb4184aa9661f3']='python.d/httpcheck.conf'
   ['02fa10fa85ab88e9723998de48d1aca0']='health.d/disks.conf'
   ['0314f0f1f88773c0ed9e9a908335e7ca']='health.d/tcp_mem.conf'
+  ['032ee2b3b6cb200bfdf1a0698c2457d6']='health.d/boinc.conf'
   ['03510c8b3a2a6e8535320cfb9ebef06a']='python.d/httpcheck.conf'
   ['036dc300bd7b0e0ef229b9822686d63e']='python.d/isc_dhcpd.conf'
   ['0388b873d0d7e47c19005b7241db77d8']='python.d/tomcat.conf'
@@ -18,7 +21,9 @@ declare -A configs_signatures=(
   ['043f0a35dde85837fabeb85b990a41c1']='health.d/swap.conf'
   ['044496086420b531487d3c57600ca673']='apps_groups.conf'
   ['0529b679d3c0e7e6332753c7f6484731']='health.d/net.conf'
+  ['054a2eece27ee2f5928b8167f5989b65']='python.d/dockerd.conf'
   ['057d12aaff0467e64529e839a258806b']='health.d/entropy.conf'
+  ['05809c6662ba39f19cbec90234433d62']='health_alarm_notify.conf'
   ['059d98d0c562e1c81653d1e64673deab']='python.d/web_log.conf'
   ['05a8f39f134850c1e8d6267dbe706273']='health.d/web_log.conf'
   ['061c45b0e34170d357e47883166ecf40']='python.d/nginx.conf'
@@ -31,12 +36,14 @@ declare -A configs_signatures=(
   ['084ee72d64760f2641b0720e79c922f3']='health.d/cpu.conf'
   ['0856124b1eecf01681b4fdf4e21efb3f']='health.d/net.conf'
   ['0862e7cf3d32ef48795702c6aefd27e0']='python.d/fail2ban.conf'
+  ['08de9ae0765a4161abe24c09e47b3454']='python.d/go_expvar.conf'
   ['08ff5218f938fc48e09e718821169d14']='health.d/redis.conf'
   ['091572888425bc3b8b559c3c53367ec7']='apps_groups.conf'
   ['09225283977a6584f8063016091cc4f2']='health.d/tcp_resets.conf'
   ['09264cec953ae1c4c2985e6446abb386']='health.d/mysql.conf'
   ['093540fdc2a228e976ce5d48a3adf9fc']='health.d/disks.conf'
   ['09e030d26be08a13fa3560e47fa27825']='apps_groups.conf'
+  ['0a5bc649295ba08f7e22e175901c1380']='python.d/unbound.conf'
   ['0a7039ecc7a86b480d9d499b12b02763']='python.d/freeradius.conf'
   ['0ad10fa896346202aee99384b0ec968d']='health.d/cpu.conf'
   ['0b6903f981cdb018c17802ac4e295609']='health.d/btrfs.conf'
@@ -58,8 +65,11 @@ declare -A configs_signatures=(
   ['111401c47f94015cd12ad0b8a4393c4f']='health.d/softnet.conf'
   ['111ead4b350593dd69b6f7ac0307b49b']='python.d/httpcheck.conf'
   ['12a4c7803ae79506a14ea784fea60dce']='health.d/net.conf'
+  ['12d27b9f4d1696c2d49a77ed71d68e6f']='python.d/w1sensor.conf'
+  ['12e57bea1127933a4fe49ce2e9674f4d']='statsd.d/example.conf'
   ['13141998a5d71308d9c119834c27bfd3']='python.d.conf'
   ['13ccf65fd879795f0fcea89ade27c2d0']='health.d/swap.conf'
+  ['13e861a3d2f3075de883994ab54df658']='health.d/megacli.conf'
   ['1423e4f8c25a66c316be37da0d5c9c54']='health.d/btrfs.conf'
   ['142a5b693d34b0308bb0b8aec71fad79']='python.d/postfix.conf'
   ['14783e051650442ec9e2ed38d81d667e']='charts.d/exim.conf'
@@ -72,6 +82,7 @@ declare -A configs_signatures=(
   ['178281aa2241d4a3e6b798bb9c4ae577']='python.d/haproxy.conf'
   ['17dc745a76ab4c37ee31a3224f644fc1']='charts.d/postfix.conf'
   ['18710ef6523cef8630d644ab270bfe02']='health.d/varnish.conf'
+  ['18c46f55d45a17d60c72877807d9a3d2']='health.d/udp_errors.conf'
   ['18ee1c6197a4381b1c1631ef6129824f']='apps_groups.conf'
   ['1972e48345e6c3f0d65f94a03317622b']='health_alarm_notify.conf'
   ['1bc518219377499d1d05d6ee770f1a87']='python.d/go_expvar.conf'
@@ -81,6 +92,7 @@ declare -A configs_signatures=(
   ['1c71a8792c5c0ed035dd97af93a04838']='health_alarm_notify.conf'
   ['1d6efba856acaaaf3b50bc6d66611b92']='python.d/web_log.conf'
   ['1e09f326178acf07d361c08a44d8b1f3']='python.d/rabbitmq.conf'
+  ['1e0bc6a0ff701d16225383e5de76585b']='python.d/spigotmc.conf'
   ['1ea8e8ef1fa8a3a0fcdfba236f4cb195']='python.d/mysql.conf'
   ['1eb0bc80934a3166fcde4d153c476d14']='health.d/fping.conf'
   ['1ef0fd38e7969c023bc3fa6d89eaf6d6']='python.d/mdstat.conf'
@@ -95,6 +107,7 @@ declare -A configs_signatures=(
   ['225792e33ddeea72992ffa5ab36d505f']='python.d/ntpd.conf'
   ['22952dbf42647c583b005054b23b545f']='health.d/disks.conf'
   ['22ceb822983134a7ca67343241f30341']='health.d/disks.conf'
+  ['2320314191d0f8e7548b9273b77ac5e3']='apps_groups.conf'
   ['2385e5d35b440619621c4af62492d91b']='health.d/disks.conf'
   ['23989e04f9c7694b7eab646f8949cd52']='python.d/portcheck.conf'
   ['23a5afe5260a7ad388e447709cb009df']='python.d/web_log.conf'
@@ -104,7 +117,9 @@ declare -A configs_signatures=(
   ['24d02e4086fd60943c45d8de2e52a4fb']='python.d/springboot.conf'
   ['254de8ec49602bea2da3631676d7cfec']='health.d/cpu.conf'
   ['256a7f06f7e579a61752fc64418cffe5']='charts.d/nut.conf'
+  ['25a35a7c3c6092a839865e9be250c024']='health.d/ram.conf'
   ['262f98b3d88b98978cb08d566ce85a9d']='charts.d/squid.conf'
+  ['27a1dbd43abc7394dcd72efe797ee9af']='python.d.conf'
   ['2827de41cf34a91b7a8e4d8724f59668']='health.d/net.conf'
   ['28df44a90e8ea4c6156314c03e88bf44']='health.d/softnet.conf'
   ['292c6cbbb5c819bb91f87c02a45890c1']='health.d/swap.conf'
@@ -116,20 +131,25 @@ declare -A configs_signatures=(
   ['2a0794fd43eadf30a51805bc9ba2c64d']='python.d/hddtemp.conf'
   ['2acae80dbdbe536a160f5b216bac84bc']='python.d/samba.conf'
   ['2ad55a5d1e885cf142849a78d4b00401']='health.d/net.conf'
+  ['2b0106e89ce622da2869cb0d201246d1']='python.d/unbound.conf'
   ['2bbbebf52f84fd27fbefecd2a8a8076f']='health.d/memcached.conf'
   ['2c2b7e8df922b2bf121fb7db32bbc3bd']='health.d/udp_errors.conf'
   ['2d1d7498c72f4245cf32902c2b7e71e0']='health.d/entropy.conf'
   ['2da0a2e7117292ece11d69723a294bd7']='python.d/mongodb.conf'
   ['2ee5df033fe9c65a45566b6760b856e3']='python.d/web_log.conf'
   ['2f05e09b69ea20cda56d8f8b6fd3e86d']='health.d/couchdb.conf'
+  ['2f13a6b7d11eda826ff26569b2a77080']='health.d/apcupsd.conf'
   ['2f3a8e33df83f14e0af8ca2465697215']='python.d/exim.conf'
   ['2f4a85fedecce1bf425fa1039f6b021e']='apps_groups.conf'
   ['2fa8fb929fd597f2ab97b6efc540a043']='health_alarm_notify.conf'
   ['307ac41f6c67fcf007d6f7135fac314c']='stream.conf'
   ['312b4b8e2805e19cf9be554b319567d6']='health.d/softnet.conf'
+  ['31471ee7eb6cfbb412587a837ffcfe6f']='python.d.conf'
   ['3161290af7c1909768253e714ea2c3de']='python.d/ceph.conf'
   ['318bb45755726a25120bb33413d4b582']='health.d/net.conf'
   ['318db50a701442890c269ab547041e97']='health.d/tcp_orphans.conf'
+  ['31e4058cfe0a01dd9ce4ae425fd7b4f1']='python.d/web_log.conf'
+  ['322ec5e7095912221110623c9d7130cf']='health_alarm_notify.conf'
   ['325617412a628e3bc776e3fbb777a2a6']='health.d/redis.conf'
   ['326e1477131e0f73304711135f70a2a5']='health.d/memcached.conf'
   ['32fde0057c790964f2c743cb3c9aad29']='health.d/nginx.conf'
@@ -160,6 +180,7 @@ declare -A configs_signatures=(
   ['39b65042cafdd9b849a44ec81aa66cac']='health_alarm_notify.conf'
   ['39f9422b0f0c3eec11a31aff79d89514']='health.d/retroshare.conf'
   ['3a04a3bc66c49d0c24f65a44fd9caa80']='python.d/postgres.conf'
+  ['3a0f1f988d2111ba003199deca722d9b']='health_alarm_notify.conf'
   ['3a278ef6c66c122a407a0236c251119d']='python.d/nginx_plus.conf'
   ['3af522d65b50a5e447607ffb28c81ff5']='apps_groups.conf'
   ['3b1bfa40a4ff6a200bb2fc00bc51a664']='apps_groups.conf'
@@ -167,10 +188,12 @@ declare -A configs_signatures=(
   ['3bc2776623889744a98178bad6fb3b79']='health.d/disks.conf'
   ['3bc2c4423b19779d49ee7935b2ea1431']='health.d/stiebeleltron.conf'
   ['3bc65e997ab59b9de390fdf63d77f5e1']='python.d/postgres.conf'
+  ['3c60691eb05d4d5bf78a41ed46303bb6']='python.d.conf'
   ['3c9c47163e9d4dbcb0079b6232398f2f']='apps_groups.conf'
   ['3ca696189911fb38a0319ddd71e9a395']='python.d/phpfpm.conf'
   ['3cc6255457d4cba881ae0554ae5d9190']='health.d/squid.conf'
   ['3d974ac9fdaa44d4527d6503bec35e34']='stream.conf'
+  ['3d9b33da0f40c2ceecd006ddfd44fd14']='python.d.conf'
   ['3f170e3343cd784983b019163393f5af']='health.d/nginx.conf'
   ['3f7b669fde5c63bd55cb6dd88866d306']='python.d/ceph.conf'
   ['3fbe85671efd5d07e51584ab8262b48b']='health.d/tcp_listen.conf'
@@ -183,14 +206,17 @@ declare -A configs_signatures=(
   ['42ad0e70b1365b6e7244cc305dbaa529']='health_alarm_notify.conf'
   ['42bf1c7c64ed77038a0aa094d792a9e2']='python.d/mysql.conf'
   ['4332dee96e4f38fc73c962df3494ab7c']='health_alarm_notify.conf'
+  ['43739017b6195a6abec14a70fe0df224']='python.d/rethinkdbs.conf'
   ['43ebb7f224c3b232d8ad044d7e9508b6']='health.d/net.conf'
   ['43ef8c1e77054f53f9be9f381eb6cd67']='python.d/portcheck.conf'
   ['4401f0c6a101d35d2cb833e7b0aeb421']='health.d/qos.conf'
   ['444e20cf75e2cd019e8d412d5d1f4a7f']='charts.d/cpu_apps.conf'
   ['4461bfacf9a3da47770fb3ca31f4c91f']='health.d/net.conf'
   ['450667c552ab7a7d8d4a2c214fdacca5']='health.d/entropy.conf'
+  ['459e57e6acb389f4243f695a1e53ab2b']='health.d/boinc.conf'
   ['45a77ac36ba9f1898144b902de17204b']='health.d/memcached.conf'
   ['46798cda21e1a5faa769abf4e5d27c48']='health.d/disks.conf'
+  ['46dfa2b6a7e7c76532e00c1344d5d171']='python.d/logind.conf'
   ['46ef6c1b638e40a7dfd62defdc5f99a3']='health.d/retroshare.conf'
   ['47180421d580baeaedf8c0ef3d647fb5']='python.d/hddtemp.conf'
   ['48195c5c8c0476a49b714b4c76bdb570']='python.d/squid.conf'
@@ -205,6 +231,7 @@ declare -A configs_signatures=(
   ['4d91ee6fe4c887ea3865ef36ac63da3c']='health.d/mysql.conf'
   ['4da1c0f009d87995ed66d84fae07f09a']='health.d/memory.conf'
   ['4dee2390e0bc89938dafa34a390dcf36']='charts.d/squid.conf'
+  ['4e07ea46dd54eb0bbb4f1c0982a71973']='python.d/cpuidle.conf'
   ['4e37502fdf1944d094dd8be1e1f5e9e6']='health.d/cpu.conf'
   ['4e59e91d800059183028bbb44cf5afd2']='health.d/httpcheck.conf'
   ['4e995acb0d6fd77403a2a9dca984b55b']='charts.d.conf'
@@ -221,6 +248,7 @@ declare -A configs_signatures=(
   ['5278ebbae19c60db600f0a119cb3664e']='python.d/apache.conf'
   ['52d230aff57850a5aacc4e0420fcd8f5']='python.d.conf'
   ['52d4131cf9df84e2550b1a5d899ec61d']='health.d/swap.conf'
+  ['5306b64a1e6baacd9de721e1f56961a8']='health_alarm_notify.conf'
   ['53160707fdc6ce46c195b1b55bb0bcb1']='health.d/swap.conf'
   ['535e5113b07b0fc6f3abd59546c276f6']='charts.d.conf'
   ['5379cdc26d7725e2b0d688d785816cef']='python.d/mysql.conf'
@@ -232,18 +260,23 @@ declare -A configs_signatures=(
   ['55608bdd908a3806df1468f6ee318b2b']='health.d/qos.conf'
   ['5598b83e915e31f68027afe324a427cd']='apps_groups.conf'
   ['55cc7e3fe365a77f8e92d01d7a428276']='health.d/ram.conf'
+  ['56324751bae48308f155c079ee7ed43f']='python.d/megacli.conf'
   ['565f11c38ae6bd5cc9d3c2adb542bc1b']='health.d/softnet.conf'
   ['5664a814f9351b55da76edd472169a73']='health_alarm_notify.conf'
   ['56b689031cdcf138064825f31474b37d']='apps_groups.conf'
+  ['56d072c4756b898d0c91f143b89e366b']='python.d.conf'
   ['573398335c0c71c075fa57f702bce287']='health.d/disks.conf'
+  ['579c7c41c756745f57afd11c94a879d7']='python.d.conf'
   ['57be306944cb09b7f024079728fd04b9']='apps_groups.conf'
   ['5829812db29598db5857c9f433e96fef']='python.d/apache.conf'
+  ['58439d9c1253e33c74b399e6853143ab']='health.d/apcupsd.conf'
   ['5855dd70d71c8497e5591b0690162c9c']='health.d/tcp_resets.conf'
   ['58660dfcc260f77deec94b328b3838e8']='health_alarm_notify.conf'
   ['58e835b7176865ec5a6f59f7aba832bf']='health.d/named.conf'
   ['598f9814966a9e2fe48e8218151d3fa6']='stream.conf'
   ['59dded33e3adfe622f36c557a4f4bed7']='health.d/net.conf'
   ['59dea5e3872e5fe4e6c535b216c516b4']='health.d/disks.conf'
+  ['5b5588b00d6829908c2c5ea3220cfa1c']='health.d/load.conf'
   ['5b917d894bb6a755d59264e9d48e9d56']='fping.conf'
   ['5bbef0708f5eff4d4a53aaf35fc48a62']='health.d/disks.conf'
   ['5bf51bb24fb41db9b1e448bd060d3f8c']='apps_groups.conf'
@@ -256,6 +289,7 @@ declare -A configs_signatures=(
   ['5f109df927d5f20409c81f4bfca0c83e']='python.d/web_log.conf'
   ['5ff1bcaa58695754e2f6980bfe19f579']='health.d/entropy.conf'
   ['609c6c57605033da96ea65e50c90201c']='charts.d/apache.conf'
+  ['60a13375b3072300bd7552cb5ee9762b']='health.d/netfilter.conf'
   ['611130db85bad90f966b52055147c81e']='python.d/httpcheck.conf'
   ['61b7ed36f35e7bd930f5f7f91694a112']='charts.d/postfix.conf'
   ['621f10b257a11add5ff5aff41e9662e3']='health.d/memcached.conf'
@@ -282,12 +316,14 @@ declare -A configs_signatures=(
   ['66c068eaa3672fbe4e2448e330b3511c']='python.d/web_log.conf'
   ['66dfe138058ca26a31a118007eb31f35']='health.d/nginx.conf'
   ['6814b9bc84483db428f6a479ba221855']='python.d/mysql.conf'
+  ['6848e78a5a1c349c6c42d6245d6530ad']='python.d/boinc.conf'
   ['68607aef1802ed3dc0cd593bf6073beb']='python.d/postfix.conf'
   ['6a18f61a595c0d48c3363bcc0dbfa6b9']='health_alarm_notify.conf'
   ['6a47af861ad3dd112124c37fbf09672b']='apps_groups.conf'
   ['6aa4507f86657383917a0407f2a9cc0d']='python.d.conf'
   ['6acad8ce5c33e642742825db0eb9bb56']='python.d/web_log.conf'
   ['6b39de5d85db45115db236347a6896d4']='health.d/named.conf'
+  ['6b598533309e08d71023e46801d45d7e']='apps_groups.conf'
   ['6bb278bd9e171c4cb5c0fe639231288b']='python.d/web_log.conf'
   ['6bf0de6e3b251b765b10a71d8c5c319d']='python.d/apache.conf'
   ['6c9f2f0abe49a6f1a69db052ebcef1bf']='python.d/elasticsearch.conf'
@@ -297,6 +333,7 @@ declare -A configs_signatures=(
   ['6e8366993709652fe7fc00e5d6a0a136']='charts.d/mysql.conf'
   ['6ea958ca521e0514af57c08b518d8c5c']='health.d/backend.conf'
   ['6f303ccfdc21c7b122758cea8c15e249']='python.d.conf'
+  ['6f54474c885234af0c792d135644d230']='python.d.conf'
   ['7005feb3eb5d06416d07cdf7e7c54425']='python.d/ntpd.conf'
   ['70105b1744a8e13f49083d7f1981aea2']='python.d/ipfs.conf'
   ['707a63f53f4b32e01d134ae90ba94aad']='health_alarm_notify.conf'
@@ -306,6 +343,7 @@ declare -A configs_signatures=(
   ['7120cba2f55b1c0a97a0e10d4f6ef751']='health.d/ipmi.conf'
   ['72246c32511197d87b004e67e4c8da36']='python.d/portcheck.conf'
   ['729b3e24a72f7d566fd429617d51a21b']='health.d/web_log.conf'
+  ['72ea87f658483f47c38994291af488e8']='health_alarm_notify.conf'
   ['73125ae64d5c6e9361944cd9bd14844e']='python.d/exim.conf'
   ['731a1fcfe9b2da1b9d685056a59541b8']='python.d/hddtemp.conf'
   ['73a8e10dfe4183aca751e9e2a80dabe3']='node.d.conf'
@@ -323,8 +361,10 @@ declare -A configs_signatures=(
   ['769aa4cdcdc3d78d0328d1f9e4edcdf9']='python.d/mysql.conf'
   ['76a0c1b21e49850442a43efddb15a81e']='health.d/tcp_orphans.conf'
   ['76a31091f42f2be1fab3bb56bb7ea400']='health_alarm_notify.conf'
+  ['76edb4cc11935aadaff53129c63457aa']='python.d.conf'
   ['777f4da70f461ef675bde07fb3644312']='python.d/redis.conf'
   ['777f55a95c5c25cf6176fece1ebbf4b8']='apps_groups.conf'
+  ['77b256144293ebfabad31779a5326948']='python.d/phpfpm.conf'
   ['7808ba2ca26bd0642270740cf6a8ee59']='charts.d/mem_apps.conf'
   ['7830066c46a7e5f9682b8d3f4566b4e5']='python.d/cpufreq.conf'
   ['78bb08809dffcb62e9bc493840f9c039']='python.d/squid.conf'
@@ -341,6 +381,7 @@ declare -A configs_signatures=(
   ['7deb236ec68a512b9bdd18e6a51d76f7']='python.d/mysql.conf'
   ['7e5fc1644aa7a54f9dbb1bd102521b09']='health.d/memcached.conf'
   ['7f13631183fbdf79c21c8e5a171e9b34']='health.d/zfs.conf'
+  ['7fb8184d56a27040e73261ed9c6fc76f']='health_alarm_notify.conf'
   ['80266bddd3df374923c750a6de91d120']='health.d/apache.conf'
   ['803a7f9dcb942eeac0fd764b9e3e38ca']='fping.conf'
   ['80d242d619eb7e91cebfdbf58d79b0f8']='health.d/disks.conf'
@@ -349,6 +390,7 @@ declare -A configs_signatures=(
   ['81255035f6d53534938085df72cdef23']='health.d/nginx.conf'
   ['8170ba3ae507cf9322bd60350348552e']='health.d/net.conf'
   ['81af92c7050873c7de2fb42e0c3f04f4']='python.d/tomcat.conf'
+  ['81f7c857a9a7bcf12f500166bd6c7499']='health.d/linux_power_supply.conf'
   ['81fd16f29d5f3d422fe1cee82dc8ed9d']='health.d/cpu.conf'
   ['8213d921b6a8382e27052fb42d81db3d']='python.d/freeradius.conf'
   ['8214bb8f4b005aa4691fcd38f7331e8f']='health.d/swap.conf'
@@ -362,12 +404,14 @@ declare -A configs_signatures=(
   ['846ce94bfeeb90c0dc6a89e8d25f1a68']='health.d/named.conf'
   ['846f6039460aa317f165d91a54cd8b07']='health.d/stiebeleltron.conf'
   ['8490f690d97adacc4e2096df82e7e8a5']='charts.d/cpufreq.conf'
+  ['86a0d8d5619b5134e2d050805b45d6c3']='python.d/unbound.conf'
   ['87155bea7383028b0c1846c802cfdd81']='python.d/mdstat.conf'
   ['871bbeea33b83ea9755600b6d574919c']='python.d/web_log.conf'
   ['87224d2f2b87646f3c0d38cc1eb30112']='python.d/nsd.conf'
   ['87615ae5ac2412d853c717383fa53781']='python.d/chrony.conf'
   ['87642c568093daf3b2c30c5beffe2225']='python.d/elasticsearch.conf'
   ['8810140ce9c09af1d18b9602c4003904']='health_alarm_notify.conf'
+  ['886975ecb9a4e856151dc71024b122e6']='health.d/apcupsd.conf'
   ['8891fb423f6b987281d7913bb6c1c024']='health.d/ipc.conf'
   ['88e3b51b6b3fe8f317df82a2d4fbb990']='python.d.conf'
   ['88f77865f75c9fb61c97d700bd4561ee']='python.d/mysql.conf'
@@ -377,15 +421,18 @@ declare -A configs_signatures=(
   ['8a1b95d375992d7b11330a0ac46f369c']='health.d/disks.conf'
   ['8a66a3085ad8892a002ff39b18b2cb07']='python.d/fail2ban.conf'
   ['8abc7f66746b201b5b0af45c419d53bc']='health.d/bind_rndc.conf'
+  ['8b834a0f343a8e620dbb639270a84cce']='health.d/mdstat.conf'
   ['8c0f037f8ad506c41acdbc4f9f6cead6']='health_alarm_notify.conf'
   ['8c1d41e2c88aeca78bc319ed74c8748c']='python.d/phpfpm.conf'
   ['8d0552371a7c9725a04196fa560813d1']='health.d/cpu.conf'
   ['8d24873bb25c195026918f15626310ea']='health.d/softnet.conf'
+  ['8d736f551571675244d853bb2f53b3da']='health.d/load.conf'
   ['8dc0bd0a70b5117454bd5f5b98f91c2c']='health.d/disks.conf'
   ['8dc6a32b8e2995cbdd527c621a72c4fb']='health.d/ram.conf'
   ['8ec636a4f96158044d2cec0fd1ff8452']='python.d/rabbitmq.conf'
   ['8ed596c4f6f85b24a890cfe95f10ce9a']='python.d/ntpd.conf'
   ['8f4f925c1e97dd164007495ec5135ffc']='health.d/fping.conf'
+  ['8f520e787d995943e61a777c826bddf7']='python.d/litespeed.conf'
   ['8f7b734ea0f89abf8acbb47c50234477']='health.d/web_log.conf'
   ['8fd472a854b0996327e8ed3562161182']='health_alarm_notify.conf'
   ['919911d13901d60a7580f5dfd7fc87bb']='health.d/ram.conf'
@@ -397,7 +444,9 @@ declare -A configs_signatures=(
   ['92024bbe088e55251665fb666305ff66']='python.d/mysql.conf'
   ['920574fcfe56d5c9c11a583905e9db62']='health.d/tcp_conn.conf'
   ['9347bcce0b3574ac5193d43248d2e3cc']='python.d/chrony.conf'
+  ['93c7c00103f63ea3b4eea1951dd16c95']='health_alarm_notify.conf'
   ['94bb961f83ec724cf86239328f73a3db']='health.d/redis.conf'
+  ['94e567bbefd37db0c55d880ff61188a6']='health_alarm_notify.conf'
   ['9542f80def48ba105190f6cdaa18248e']='health.d/mysql.conf'
   ['95a27691df972832a5e7626ae59b0af6']='python.d/portcheck.conf'
   ['96997c8bf3a65b9eac848cafa8c127d2']='python.d/portcheck.conf'
@@ -406,14 +455,17 @@ declare -A configs_signatures=(
   ['97f337eb96213f3ede05e522e3743a6c']='python.d/memcached.conf'
   ['98e4dd6ba71bf76767bc59c63a51b617']='apps_groups.conf'
   ['98f6f917138949228b9fb88c61e5aea8']='charts.d/cpufreq.conf'
+  ['9962e20641036566279ac800861b7963']='python.d.conf'
   ['99a3de85d1e7826ed64a5f8576712e5d']='python.d.conf'
   ['99b06e68f1da5917ae4cf60e901439f6']='health.d/ram.conf'
   ['99b6030ce25c8fee4598179c0f95fb0b']='health.d/redis.conf'
   ['99c1617448abbdc493976ab9bda5ce02']='apps_groups.conf'
   ['9a525125e705ca5a3146b3399be4510a']='python.d/nginx_plus.conf'
+  ['9a89bbdf5d9732b9a29a0aa82714059b']='health.d/dockerd.conf'
   ['9a8a459a3841b78d4c6ef07428ad2fe1']='health.d/entropy.conf'
   ['9b6eee7f2febb29efac2b7ea9fcab9be']='charts.d/nut.conf'
   ['9c0185ceff15415bc59b2ce2c1f04367']='apps_groups.conf'
+  ['9c457056c9ee0d50f9717da647bbd444']='health_alarm_notify.conf'
   ['9c8ddfa810d83ae58c8614ee5229e66b']='health.d/disks.conf'
   ['9c981c75bdf4b1637f7113e7e45eb2bf']='health.d/memcached.conf'
   ['9d304e41e32721224a743f25534263d9']='python.d/retroshare.conf'
@@ -449,6 +501,7 @@ declare -A configs_signatures=(
   ['a731b7b164f42717c1c9a778ee637ff3']='health.d/memcached.conf'
   ['a7320c6f26191b9599ec3bc4be007a93']='health.d/swap.conf'
   ['a752e51d923e15add4a11fa8f3be935a']='health_email_recipients.conf'
+  ['a78d59c2ad14a17b9b8c7fa5d796b427']='python.d.conf'
   ['a7cceeafb1e6ef1ead503ab65f687902']='apps_groups.conf'
   ['a8167dafeac0b66696a1d9b08e815cda']='health.d/disks.conf'
   ['a837986be634fd7648bcdf939019424a']='apps_groups.conf'
@@ -468,6 +521,7 @@ declare -A configs_signatures=(
   ['ab3902bf769ed35219691c95a3954ebb']='python.d/portcheck.conf'
   ['abaf2e021f9f6ee5d1c4e4726f47348e']='health.d/ipc.conf'
   ['abe1a80ac6d6f97bd324e72f31e8256e']='health.d/ram.conf'
+  ['ac8a91f0297bf7ebb8970f8cae4b3477']='health.d/ipc.conf'
   ['acaa6731a272f6d251afb357e99b518f']='apps_groups.conf'
   ['ad15b251b93f8b16bb33ec508f44a598']='health.d/netfilter.conf'
   ['ade389c1b6efe0cff47c33e662731f0a']='python.d/squid.conf'
@@ -490,8 +544,10 @@ declare -A configs_signatures=(
   ['b32164929eda7449a9677044e11151bf']='python.d.conf'
   ['b3d48935ab7f44a57d40ad349df0033d']='python.d/postgres.conf'
   ['b3fc4749b132e55ac0d3a0f92859237e']='health.d/tcp_resets.conf'
+  ['b44e33ba5c7a7306b467ac9c9b698895']='health.d/bcache.conf'
   ['b4825f731cc7eb03b374eade14a453c1']='health.d/net.conf'
   ['b5246eed059e33e0903a819fa5460ce0']='python.d/ipfs.conf'
+  ['b544e5934ac79a9548b5af6756c042a6']='apps_groups.conf'
   ['b5b5a8d6d991fb1cef8d80afa23ba114']='python.d/cpufreq.conf'
   ['b636e5e603f9d93e52c7577ac8c6bf0c']='health.d/entropy.conf'
   ['b68706bb8101ef85192db92f865a5d80']='health_alarm_notify.conf'
@@ -505,6 +561,7 @@ declare -A configs_signatures=(
   ['b8969be5b3ceb4a99477937119bd4323']='python.d.conf'
   ['b8aff60806fb6829a4e72a824e655375']='health.d/beanstalkd.conf'
   ['b8b87574fd496a66ede884c5336493bd']='python.d/phpfpm.conf'
+  ['b8ca1449d142b7f1cd202d875d400882']='health.d/apcupsd.conf'
   ['b915126262d08aa9da81de539a58a3fb']='python.d/redis.conf'
   ['ba11ea2d2f632b2de4b1224bcdc54f07']='python.d/smartd_log.conf'
   ['bb51112d01ff20053196a57632df8962']='apps_groups.conf'
@@ -515,8 +572,11 @@ declare -A configs_signatures=(
   ['bda5517ea01640cfdfa0a27549619d6a']='health.d/memcached.conf'
   ['bdec19a255367f22b6fb652d0bef6bad']='python.d/httpcheck.conf'
   ['bf66f113b2dd8d8fb444cbd5650f284c']='health_alarm_notify.conf'
+  ['bfa2f469e83cf2961963841e143049e6']='health.d/tcp_listen.conf'
   ['bfd35a87c77c3a1dbe218fd02b529208']='charts.d/example.conf'
+  ['bff38dfe6c879f93ac49b77990fce1cc']='python.d/ipfs.conf'
   ['c004430f55310ae9ed489c4905ed02cb']='charts.d/apache.conf'
+  ['c0385cdf9e87aca01f5dee2a5d89c467']='health_alarm_notify.conf'
   ['c080e006f544c949baca33cc24a9c126']='health_alarm_notify.conf'
   ['c0c4c63384ef408f0715331e7615aa60']='python.d/ceph.conf'
   ['c132d2e257fc4df2925be7ad75100d5b']='health.d/entropy.conf'
@@ -534,6 +594,7 @@ declare -A configs_signatures=(
   ['c84fd3292710091802e443c8e688dee1']='health_alarm_notify.conf'
   ['c878060687b85c46006e9041f3632d88']='health_alarm_notify.conf'
   ['c88fb430f35b7d8f08775d84debffbd2']='python.d/phpfpm.conf'
+  ['c8e339491a83df22decbdf5f1f8a037f']='python.d.conf'
   ['c94cb4f4eeaa13c1dcee6248deb01829']='python.d/postgres.conf'
   ['c9a16df512b4a9ce7fa65f5a69bda20a']='python.d/web_log.conf'
   ['c9b792755de59d842ba95f8c315d94c8']='health.d/swap.conf'
@@ -553,12 +614,16 @@ declare -A configs_signatures=(
   ['ccde91d209aeb02c4a6be0e43a8d92b3']='health.d/apache.conf'
   ['cce5176664d29d137fa7575b77de01e4']='health.d/tcp_resets.conf'
   ['cd08e5534c94bf1f2cd28396c76b8bbc']='health.d/ram.conf'
+  ['cd15a9a77a46d66ca0beb55f2acb7538']='health.d/mysql.conf'
   ['cd9a7de356d6424c4a71d87053726c86']='python.d/bind_rndc.conf'
   ['cdd504812ff93073c57d02209d4d0f69']='health.d/cpu.conf'
+  ['cde652b15742e377e98e79fb9eb2acab']='health_alarm_notify.conf'
   ['ce0fa3485a0d8d3aa80b25ab0c70cc5a']='charts.d/apcupsd.conf'
   ['ce2e8768964a936f58c4c2144aee8a01']='health_alarm_notify.conf'
   ['ce3b65eac6c472b21905f7f72104f4c9']='python.d/nginx.conf'
+  ['ce937f8b9ab7820b61ce9fcde6b946e8']='charts.d/nut.conf'
   ['cf2c9096b3a8c506a3ec76fa52574395']='charts.d/phpfpm.conf'
+  ['cf46545065f7698c4d529fdc77955274']='python.d/puppet.conf'
   ['cf48dfd828af70bea04db7a809f94358']='health.d/haproxy.conf'
   ['cf8b87ede2d3233b6f55f4690af7fb08']='python.d/smartd_log.conf'
   ['cfecf298bdafaa7e0a3a263548e82132']='python.d/sensors.conf'
@@ -579,9 +644,11 @@ declare -A configs_signatures=(
   ['d56c28ece8354850011f213d94d02fe0']='python.d/hddtemp.conf'
   ['d5dab509d8792f795bece27de39dd476']='health.d/mysql.conf'
   ['d69eba15d3e968187a938a7b98e22dda']='python.d.conf'
+  ['d6cd34c96e47a8a63732a6f1512f5c39']='python.d/ovpn_status_log.conf'
   ['d712df81b17971884443a4a9bc996c9e']='health_alarm_notify.conf'
   ['d74dc63fbe631dab9a2ff1b0f5d71719']='python.d/hddtemp.conf'
   ['d7e0bd12d4a60a761dcab3531a841711']='python.d/phpfpm.conf'
+  ['d86e0502e394e0a16c0ca574db462653']='health.d/megacli.conf'
   ['d8dc489e32f7114c6298fce94e86a8ef']='health.d/entropy.conf'
   ['d9036091e2232fc2b8bfa8c7484dea28']='apps_groups.conf'
   ['d9258e671d0d0b6498af1ce16ef030d2']='apps_groups.conf'
@@ -592,6 +659,7 @@ declare -A configs_signatures=(
   ['dc0d2b96378f290eec3fcf98b89ad824']='python.d/cpufreq.conf'
   ['dc9c2a66778623a759706c14c3d91983']='health.d/net.conf'
   ['dd220677c42c487549952048ee1f7750']='python.d/postgres.conf'
+  ['dd221c29dfb7c5586fc906748aa7c831']='health.d/tcp_listen.conf'
   ['dd7764507804a2296bfd091a58ad4ad7']='health.d/memcached.conf'
   ['dd8254ef74509a3e38cb2838e30f7e63']='health.d/disks.conf'
   ['ddda2bb1c88be03b637d3285406f7910']='health.d/named.conf'
@@ -620,9 +688,11 @@ declare -A configs_signatures=(
   ['e3e0c742427c9609ce923e845a0c8532']='health.d/ceph.conf'
   ['e3e5bc57335c489f01b8559f5c70e112']='python.d/squid.conf'
   ['e40947d22f7ed5359f12fc89e3512963']='python.d/dovecot.conf'
+  ['e445de5a4d6953bddec36d85b1b2771e']='python.d/linux_power_supply.conf'
   ['e449e5582279742496550df14b6fca95']='health.d/entropy.conf'
   ['e4ed13f996434ac17b40a2228c96283b']='python.d/tomcat.conf'
   ['e5f32f54d6d6728f21f9ac26f37d6573']='python.d/example.conf'
+  ['e707ad89a146004ae281d66a4e01e5c1']='health.d/load.conf'
   ['e70a7ee4999f30c6ceb75f31088a3a34']='python.d/powerdns.conf'
   ['e734c5951a8764d4d9de046dd7cf7407']='health.d/softnet.conf'
   ['e7ae3f2b00b9e5178acfe4f5e46228b7']='health.d/tcp_resets.conf'
@@ -644,6 +714,7 @@ declare -A configs_signatures=(
   ['edb48efc8f446624001e07d04f6cad1a']='apps_groups.conf'
   ['ee5343881744e6a97e6ee5cdd329cfb8']='health.d/retroshare.conf'
   ['eee974cea7534aeed2d38bcf0edf3f9e']='python.d/springboot.conf'
+  ['ef067629c7456cb934f110ce15200131']='stream.conf'
   ['ef1861bf5725d91e773cbdba05687597']='python.d.conf'
   ['ef9916ea144878a9f37cbb6b1b29da10']='health.d/squid.conf'
   ['f075be84c5bfac7e34de2a091841360c']='statsd.d/example.conf'
@@ -651,14 +722,18 @@ declare -A configs_signatures=(
   ['f1446cb3f1a905ee06defa2aa15ee806']='python.d/web_log.conf'
   ['f1682835e3414f60284c13bf1662e50f']='health.d/web_log.conf'
   ['f1f114647ed185c4812c361b1d870b44']='python.d/sensors.conf'
+  ['f2622abcee86b514976a053b528553d4']='python.d/web_log.conf'
   ['f2f1b8656f5011e965ac45b818cf668d']='apps_groups.conf'
+  ['f3c56a769ffdf811ec13467d8f7cd3c0']='python.d/apache.conf'
   ['f42389e5497a28205ba6fef4f716db4f']='python.d/nginx.conf'
   ['f42df9f13abfae2426519c6728b34882']='charts.d/example.conf'
+  ['f4609cbd5e748f41ad4f1ea3d2dcfde0']='python.d.conf'
   ['f4c5d88c34d3fb853498124177cc77f1']='python.d.conf'
   ['f5736e0b2945182cb659cb0713eff923']='apps_groups.conf'
   ['f66e5236ba1245bb2e5fd99191f114c6']='charts.d/hddtemp.conf'
   ['f68ac0fca6b4ffc96097779344cabac6']='health.d/tcp_listen.conf'
   ['f6c6656f900ff52d159dca12d624016a']='python.d/postgres.conf'
+  ['f72e44a305567c9b21a244ebd6da6800']='health_alarm_notify.conf'
   ['f7401a6e7c7d4fe2e0e2be7f7f523275']='health.d/web_log.conf'
   ['f7a99e94231beda85c6254912d8d31c1']='python.d/tomcat.conf'
   ['f82924563e41d99cdae5431f0af69155']='python.d.conf'
@@ -672,14 +747,17 @@ declare -A configs_signatures=(
   ['fbdb6f5d3906d3d8ea4e28f6ba6965a6']='python.d/go_expvar.conf'
   ['fc11bd9255ac382f442f31c1f1a32532']='health_alarm_notify.conf'
   ['fc40b83f173bc4676d686867a8369a62']='python.d/dns_query_time.conf'
+  ['fc64f44eb19a8b5a88ba8dc28de355f6']='python.d/puppet.conf'
   ['fc987459f82e251e31c41d822e5e8202']='python.d/nsd.conf'
   ['fd3164e6e8cb6726706267eae49aa082']='health_alarm_notify.conf'
   ['fdd11640ba626cc2064c2fe3ea3eee4c']='health.d/cpu.conf'
   ['fde44f62c8d7e52f09705cd273fae6b1']='charts.d/tomcat.conf'
   ['fdea185e0e52b459b48852aa37f20e0f']='apps_groups.conf'
   ['fe069e4d6579ecdda7f36ac2318ffefc']='python.d/exim.conf'
+  ['fe2b15369de13b83b18e2ff5c7594a57']='python.d/monit.conf'
   ['fe478efe2e721724edb1fe2ef1addf93']='health_alarm_notify.conf'
   ['feb8bcf828aa2529a7ee4a140feeb12d']='health.d/net.conf'
   ['ff1b3d8ae8b2149c711d8da9b7a9c4bd']='health_alarm_notify.conf'
+  ['ff3f0a9b1bf488a5075850cc16de3c26']='python.d/monit.conf'
   ['ff940c5396f16d05deb5c5859832ee48']='health.d/swap.conf'
 )
diff --git a/configure b/configure
index 054590f7f..cbcc0a1ee 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for netdata 1.10.0.
+# Generated by GNU Autoconf 2.69 for netdata 1.11.0_rolling.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -577,12 +577,12 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='netdata'
 PACKAGE_TARNAME='netdata'
-PACKAGE_VERSION='1.10.0'
-PACKAGE_STRING='netdata 1.10.0'
+PACKAGE_VERSION='1.11.0_rolling'
+PACKAGE_STRING='netdata 1.11.0_rolling'
 PACKAGE_BUGREPORT=''
 PACKAGE_URL=''
 
-ac_unique_file="src/main.c"
+ac_unique_file="daemon/main.c"
 # Factoring default headers for most tests.
 ac_includes_default="\
 #include <stdio.h>
@@ -640,6 +640,7 @@ OPTIONAL_MATH_CLFAGS
 webdir
 pluginsdir
 logdir
+libconfigdir
 configdir
 pythondir
 nodedir
@@ -647,6 +648,7 @@ chartsdir
 cachedir
 registrydir
 varlibdir
+build_target
 ENABLE_PLUGIN_CGROUP_NETWORK_FALSE
 ENABLE_PLUGIN_CGROUP_NETWORK_TRUE
 ENABLE_PLUGIN_NFACCT_FALSE
@@ -1374,7 +1376,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures netdata 1.10.0 to adapt to many kinds of systems.
+\`configure' configures netdata 1.11.0_rolling to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1444,7 +1446,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of netdata 1.10.0:";;
+     short | recursive ) echo "Configuration of netdata 1.11.0_rolling:";;
    esac
   cat <<\_ACEOF
 
@@ -1587,7 +1589,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-netdata configure 1.10.0
+netdata configure 1.11.0_rolling
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2365,7 +2367,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by netdata $as_me 1.10.0, which was
+It was created by netdata $as_me 1.11.0_rolling, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2646,6 +2648,10 @@ $as_echo "$as_me: creating cache $cache_file" >&6;}
 fi
 
 as_fn_append ac_header_list " sys/prctl.h"
+as_fn_append ac_header_list " sys/vfs.h"
+as_fn_append ac_header_list " sys/statfs.h"
+as_fn_append ac_header_list " sys/statvfs.h"
+as_fn_append ac_header_list " sys/mount.h"
 as_fn_append ac_func_list " accept4"
 as_fn_append ac_header_list " linux/netfilter/nfnetlink_conntrack.h"
 # Check that the precious variables saved in the cache have kept the same
@@ -2746,7 +2752,7 @@ $as_echo "$as_me: ***************** MAINTAINER MODE *****************" >&6;}
 PACKAGE_BUILT_DATE=$(date '+%d %b %Y')
 fi
 
-PACKAGE_RPM_VERSION="1.10.0"
+PACKAGE_RPM_VERSION="1.10.1"
 
 
 
@@ -2787,6 +2793,10 @@ ac_config_headers="$ac_config_headers config.h"
 
 
 
+
+
+
+
 am__api_version='1.14'
 
 # Find a good install program.  We prefer a C program (faster),
@@ -3273,7 +3283,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='netdata'
- VERSION='1.10.0'
+ VERSION='1.11.0_rolling'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -3450,6 +3460,47 @@ END
     as_fn_error $? "Your 'rm' program is bad, sorry." "$LINENO" 5
   fi
 fi
+
+    # Check whether --enable-silent-rules was given.
+if test "${enable_silent_rules+set}" = set; then :
+  enableval=$enable_silent_rules;
+fi
+
+case $enable_silent_rules in # (((
+  yes) AM_DEFAULT_VERBOSITY=0;;
+   no) AM_DEFAULT_VERBOSITY=1;;
+    *) AM_DEFAULT_VERBOSITY=0;;
+esac
+am_make=${MAKE-make}
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $am_make supports nested variables" >&5
+$as_echo_n "checking whether $am_make supports nested variables... " >&6; }
+if ${am_cv_make_support_nested_variables+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if $as_echo 'TRUE=$(BAR$(V))
+BAR0=false
+BAR1=true
+V=1
+am__doit:
+	@$(TRUE)
+.PHONY: am__doit' | $am_make -f - >/dev/null 2>&1; then
+  am_cv_make_support_nested_variables=yes
+else
+  am_cv_make_support_nested_variables=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_make_support_nested_variables" >&5
+$as_echo "$am_cv_make_support_nested_variables" >&6; }
+if test $am_cv_make_support_nested_variables = yes; then
+    AM_V='$(V)'
+  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
+else
+  AM_V=$AM_DEFAULT_VERBOSITY
+  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
+fi
+AM_BACKSLASH='\'
+
+
 # Make sure we can run config.sub.
 $SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
   as_fn_error $? "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5
@@ -4568,6 +4619,7 @@ fi
 
 
 
+
 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
 	if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
@@ -5635,7 +5687,7 @@ _ACEOF
 fi
 done
 
-for ac_func in sched_setscheduler sched_get_priority_min sched_get_priority_max nice
+for ac_func in sched_setscheduler sched_getscheduler sched_getparam sched_get_priority_min sched_get_priority_max getpriority setpriority nice
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
@@ -6102,6 +6154,18 @@ done
 
 
 
+
+
+
+
+
+
+
+
+
+
+
+
 if test "${enable_accept4}" != "no"; then
 
 
@@ -6131,14 +6195,17 @@ $as_echo_n "checking operating system... " >&6; }
 case "$host_os" in
 freebsd*)
     build_target=freebsd
+    build_target_id=2
     CFLAGS="${CFLAGS} -I/usr/local/include"
     ;;
 darwin*)
     build_target=macos
+    build_target_id=3
     LDFLAGS="${LDFLAGS} -framework CoreFoundation -framework IOKit"
     ;;
 *)
     build_target=linux
+    build_target_id=1
     ;;
 esac
 
@@ -6166,8 +6233,8 @@ else
   LINUX_FALSE=
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${build_target}" >&5
-$as_echo "${build_target}" >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${build_target} with id ${build_target_id}" >&5
+$as_echo "${build_target} with id ${build_target_id}" >&6; }
 
 
 # -----------------------------------------------------------------------------
@@ -7974,26 +8041,42 @@ cat >>confdefs.h <<_ACEOF
 _ACEOF
 
 
-varlibdir="\$(localstatedir)/lib/netdata"
+varlibdir="${localstatedir}/lib/netdata"
+registrydir="${localstatedir}/lib/netdata/registry"
+cachedir="${localstatedir}/cache/netdata"
+chartsdir="${libexecdir}/netdata/charts.d"
+nodedir="${libexecdir}/netdata/node.d"
+pythondir="${libexecdir}/netdata/python.d"
+configdir="${sysconfdir}/netdata"
+libconfigdir="${libdir}/netdata/conf.d"
+logdir="${localstatedir}/log/netdata"
+pluginsdir="${libexecdir}/netdata/plugins.d"
+
+
+
 
-registrydir="\$(localstatedir)/lib/netdata/registry"
 
-cachedir="\$(localstatedir)/cache/netdata"
 
-chartsdir="\$(libexecdir)/netdata/charts.d"
 
-nodedir="\$(libexecdir)/netdata/node.d"
 
-pythondir="\$(libexecdir)/netdata/python.d"
 
-configdir="\$(sysconfdir)/netdata"
 
-logdir="\$(localstatedir)/log/netdata"
 
-pluginsdir="\$(libexecdir)/netdata/plugins.d"
 
 
 
+CPPFLAGS="\
+    -DTARGET_OS=${build_target_id} \
+	-DVARLIB_DIR=\"\\\"${varlibdir}\\\"\" \
+	-DCACHE_DIR=\"\\\"${cachedir}\\\"\" \
+	-DCONFIG_DIR=\"\\\"${configdir}\\\"\" \
+	-DLIBCONFIG_DIR=\"\\\"${libconfigdir}\\\"\" \
+	-DLOG_DIR=\"\\\"${logdir}\\\"\" \
+	-DPLUGINS_DIR=\"\\\"${pluginsdir}\\\"\" \
+	-DRUN_DIR=\"\\\"${localstatedir}/run/netdata\\\"\" \
+	-DWEB_DIR=\"\\\"${webdir}\\\"\" \
+"
+
 
 
 
@@ -8007,7 +8090,7 @@ pluginsdir="\$(libexecdir)/netdata/plugins.d"
 
 
 
-ac_config_files="$ac_config_files Makefile charts.d/Makefile conf.d/Makefile netdata.spec python.d/Makefile node.d/Makefile plugins.d/Makefile src/Makefile system/Makefile web/Makefile diagrams/Makefile makeself/Makefile contrib/Makefile tests/Makefile"
+ac_config_files="$ac_config_files Makefile netdata.spec backends/graphite/Makefile backends/json/Makefile backends/Makefile backends/opentsdb/Makefile backends/prometheus/Makefile collectors/Makefile collectors/apps.plugin/Makefile collectors/cgroups.plugin/Makefile collectors/charts.d.plugin/Makefile collectors/checks.plugin/Makefile collectors/diskspace.plugin/Makefile collectors/fping.plugin/Makefile collectors/freebsd.plugin/Makefile collectors/freeipmi.plugin/Makefile collectors/idlejitter.plugin/Makefile collectors/macos.plugin/Makefile collectors/nfacct.plugin/Makefile collectors/node.d.plugin/Makefile collectors/plugins.d/Makefile collectors/proc.plugin/Makefile collectors/python.d.plugin/Makefile collectors/statsd.plugin/Makefile collectors/tc.plugin/Makefile contrib/Makefile daemon/Makefile database/Makefile diagrams/Makefile health/Makefile health/notifications/Makefile libnetdata/Makefile libnetdata/adaptive_resortable_list/Makefile libnetdata/avl/Makefile libnetdata/buffer/Makefile libnetdata/clocks/Makefile libnetdata/config/Makefile libnetdata/dictionary/Makefile libnetdata/eval/Makefile libnetdata/locks/Makefile libnetdata/log/Makefile libnetdata/popen/Makefile libnetdata/procfile/Makefile libnetdata/simple_pattern/Makefile libnetdata/socket/Makefile libnetdata/statistical/Makefile libnetdata/storage_number/Makefile libnetdata/threads/Makefile libnetdata/url/Makefile makeself/Makefile registry/Makefile streaming/Makefile system/Makefile tests/Makefile web/Makefile web/api/Makefile web/api/badges/Makefile web/api/exporters/Makefile web/api/exporters/shell/Makefile web/api/exporters/prometheus/Makefile web/api/formatters/Makefile web/api/formatters/csv/Makefile web/api/formatters/json/Makefile web/api/formatters/ssv/Makefile web/api/formatters/value/Makefile web/api/queries/Makefile web/api/queries/average/Makefile web/api/queries/des/Makefile web/api/queries/incremental_sum/Makefile web/api/queries/max/Makefile web/api/queries/median/Makefile web/api/queries/min/Makefile web/api/queries/ses/Makefile web/api/queries/stddev/Makefile web/api/queries/sum/Makefile web/gui/Makefile web/server/Makefile web/server/single/Makefile web/server/multi/Makefile web/server/static/Makefile"
 
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
@@ -8575,7 +8658,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by netdata $as_me 1.10.0, which was
+This file was extended by netdata $as_me 1.11.0_rolling, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -8641,7 +8724,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-netdata config.status 1.10.0
+netdata config.status 1.11.0_rolling
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
@@ -8773,19 +8856,85 @@ do
     "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
     "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
     "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
-    "charts.d/Makefile") CONFIG_FILES="$CONFIG_FILES charts.d/Makefile" ;;
-    "conf.d/Makefile") CONFIG_FILES="$CONFIG_FILES conf.d/Makefile" ;;
     "netdata.spec") CONFIG_FILES="$CONFIG_FILES netdata.spec" ;;
-    "python.d/Makefile") CONFIG_FILES="$CONFIG_FILES python.d/Makefile" ;;
-    "node.d/Makefile") CONFIG_FILES="$CONFIG_FILES node.d/Makefile" ;;
-    "plugins.d/Makefile") CONFIG_FILES="$CONFIG_FILES plugins.d/Makefile" ;;
-    "src/Makefile") CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
-    "system/Makefile") CONFIG_FILES="$CONFIG_FILES system/Makefile" ;;
-    "web/Makefile") CONFIG_FILES="$CONFIG_FILES web/Makefile" ;;
+    "backends/graphite/Makefile") CONFIG_FILES="$CONFIG_FILES backends/graphite/Makefile" ;;
+    "backends/json/Makefile") CONFIG_FILES="$CONFIG_FILES backends/json/Makefile" ;;
+    "backends/Makefile") CONFIG_FILES="$CONFIG_FILES backends/Makefile" ;;
+    "backends/opentsdb/Makefile") CONFIG_FILES="$CONFIG_FILES backends/opentsdb/Makefile" ;;
+    "backends/prometheus/Makefile") CONFIG_FILES="$CONFIG_FILES backends/prometheus/Makefile" ;;
+    "collectors/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/Makefile" ;;
+    "collectors/apps.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/apps.plugin/Makefile" ;;
+    "collectors/cgroups.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/cgroups.plugin/Makefile" ;;
+    "collectors/charts.d.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/charts.d.plugin/Makefile" ;;
+    "collectors/checks.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/checks.plugin/Makefile" ;;
+    "collectors/diskspace.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/diskspace.plugin/Makefile" ;;
+    "collectors/fping.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/fping.plugin/Makefile" ;;
+    "collectors/freebsd.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/freebsd.plugin/Makefile" ;;
+    "collectors/freeipmi.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/freeipmi.plugin/Makefile" ;;
+    "collectors/idlejitter.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/idlejitter.plugin/Makefile" ;;
+    "collectors/macos.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/macos.plugin/Makefile" ;;
+    "collectors/nfacct.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/nfacct.plugin/Makefile" ;;
+    "collectors/node.d.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/node.d.plugin/Makefile" ;;
+    "collectors/plugins.d/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/plugins.d/Makefile" ;;
+    "collectors/proc.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/proc.plugin/Makefile" ;;
+    "collectors/python.d.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/python.d.plugin/Makefile" ;;
+    "collectors/statsd.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/statsd.plugin/Makefile" ;;
+    "collectors/tc.plugin/Makefile") CONFIG_FILES="$CONFIG_FILES collectors/tc.plugin/Makefile" ;;
+    "contrib/Makefile") CONFIG_FILES="$CONFIG_FILES contrib/Makefile" ;;
+    "daemon/Makefile") CONFIG_FILES="$CONFIG_FILES daemon/Makefile" ;;
+    "database/Makefile") CONFIG_FILES="$CONFIG_FILES database/Makefile" ;;
     "diagrams/Makefile") CONFIG_FILES="$CONFIG_FILES diagrams/Makefile" ;;
+    "health/Makefile") CONFIG_FILES="$CONFIG_FILES health/Makefile" ;;
+    "health/notifications/Makefile") CONFIG_FILES="$CONFIG_FILES health/notifications/Makefile" ;;
+    "libnetdata/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/Makefile" ;;
+    "libnetdata/adaptive_resortable_list/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/adaptive_resortable_list/Makefile" ;;
+    "libnetdata/avl/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/avl/Makefile" ;;
+    "libnetdata/buffer/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/buffer/Makefile" ;;
+    "libnetdata/clocks/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/clocks/Makefile" ;;
+    "libnetdata/config/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/config/Makefile" ;;
+    "libnetdata/dictionary/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/dictionary/Makefile" ;;
+    "libnetdata/eval/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/eval/Makefile" ;;
+    "libnetdata/locks/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/locks/Makefile" ;;
+    "libnetdata/log/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/log/Makefile" ;;
+    "libnetdata/popen/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/popen/Makefile" ;;
+    "libnetdata/procfile/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/procfile/Makefile" ;;
+    "libnetdata/simple_pattern/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/simple_pattern/Makefile" ;;
+    "libnetdata/socket/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/socket/Makefile" ;;
+    "libnetdata/statistical/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/statistical/Makefile" ;;
+    "libnetdata/storage_number/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/storage_number/Makefile" ;;
+    "libnetdata/threads/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/threads/Makefile" ;;
+    "libnetdata/url/Makefile") CONFIG_FILES="$CONFIG_FILES libnetdata/url/Makefile" ;;
     "makeself/Makefile") CONFIG_FILES="$CONFIG_FILES makeself/Makefile" ;;
-    "contrib/Makefile") CONFIG_FILES="$CONFIG_FILES contrib/Makefile" ;;
+    "registry/Makefile") CONFIG_FILES="$CONFIG_FILES registry/Makefile" ;;
+    "streaming/Makefile") CONFIG_FILES="$CONFIG_FILES streaming/Makefile" ;;
+    "system/Makefile") CONFIG_FILES="$CONFIG_FILES system/Makefile" ;;
     "tests/Makefile") CONFIG_FILES="$CONFIG_FILES tests/Makefile" ;;
+    "web/Makefile") CONFIG_FILES="$CONFIG_FILES web/Makefile" ;;
+    "web/api/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/Makefile" ;;
+    "web/api/badges/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/badges/Makefile" ;;
+    "web/api/exporters/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/exporters/Makefile" ;;
+    "web/api/exporters/shell/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/exporters/shell/Makefile" ;;
+    "web/api/exporters/prometheus/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/exporters/prometheus/Makefile" ;;
+    "web/api/formatters/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/formatters/Makefile" ;;
+    "web/api/formatters/csv/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/formatters/csv/Makefile" ;;
+    "web/api/formatters/json/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/formatters/json/Makefile" ;;
+    "web/api/formatters/ssv/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/formatters/ssv/Makefile" ;;
+    "web/api/formatters/value/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/formatters/value/Makefile" ;;
+    "web/api/queries/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/queries/Makefile" ;;
+    "web/api/queries/average/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/queries/average/Makefile" ;;
+    "web/api/queries/des/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/queries/des/Makefile" ;;
+    "web/api/queries/incremental_sum/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/queries/incremental_sum/Makefile" ;;
+    "web/api/queries/max/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/queries/max/Makefile" ;;
+    "web/api/queries/median/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/queries/median/Makefile" ;;
+    "web/api/queries/min/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/queries/min/Makefile" ;;
+    "web/api/queries/ses/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/queries/ses/Makefile" ;;
+    "web/api/queries/stddev/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/queries/stddev/Makefile" ;;
+    "web/api/queries/sum/Makefile") CONFIG_FILES="$CONFIG_FILES web/api/queries/sum/Makefile" ;;
+    "web/gui/Makefile") CONFIG_FILES="$CONFIG_FILES web/gui/Makefile" ;;
+    "web/server/Makefile") CONFIG_FILES="$CONFIG_FILES web/server/Makefile" ;;
+    "web/server/single/Makefile") CONFIG_FILES="$CONFIG_FILES web/server/single/Makefile" ;;
+    "web/server/multi/Makefile") CONFIG_FILES="$CONFIG_FILES web/server/multi/Makefile" ;;
+    "web/server/static/Makefile") CONFIG_FILES="$CONFIG_FILES web/server/static/Makefile" ;;
 
   *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
   esac
diff --git a/configure.ac b/configure.ac
index d41ae9d63..2a7337379 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,16 +1,17 @@
 #
 # Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 AC_PREREQ(2.60)
 
 define([VERSION_MAJOR], [1])
 define([VERSION_MINOR], [10])
-define([VERSION_FIX], [0])
+define([VERSION_FIX], [1])
 define([VERSION_NUMBER], VERSION_MAJOR[.]VERSION_MINOR[.]VERSION_FIX)
-define([VERSION_SUFFIX], [])
+define([VERSION_SUFFIX], [_rolling])
 
 dnl Set to "1" for a first RPM release of a new version
-PACKAGE_RPM_RELEASE="1"
+PACKAGE_RPM_RELEASE="0.0.$(echo VERSION_SUFFIX | sed s/^_//)"
 
 # We do not use m4_esyscmd_s to support older autoconf.
 define([VERSION_STRING], m4_esyscmd(git describe 2>/dev/null | sed 's/^v//' | tr -d '\n'))
@@ -34,11 +35,19 @@ AC_SUBST([PACKAGE_RPM_RELEASE])
 
 AC_CONFIG_AUX_DIR([.])
 AC_CONFIG_HEADERS([config.h])
-AC_CONFIG_MACRO_DIR([m4])
-AC_CONFIG_SRCDIR([src/main.c])
-AM_INIT_AUTOMAKE([tar-pax])
+AC_CONFIG_MACRO_DIR([build/m4])
+AC_CONFIG_SRCDIR([daemon/main.c])
+define([AUTOMATE_INIT_OPTIONS], [tar-pax subdir-objects])
+m4_ifdef([AM_SILENT_RULES], [
+    define([AUTOMATE_INIT_OPTIONS], [tar-pax silent-rules subdir-objects])
+    ])
+AM_INIT_AUTOMAKE(AUTOMATE_INIT_OPTIONS)
+m4_ifdef([AM_SILENT_RULES], [
+    AM_SILENT_RULES([yes])
+    ])
 AC_CANONICAL_HOST
 AC_PROG_CC
+AM_PROG_CC_C_O
 AC_PROG_INSTALL
 PKG_PROG_PKG_CONFIG
 AC_USE_SYSTEM_EXTENSIONS
@@ -131,7 +140,7 @@ AX_GCC_FUNC_ATTRIBUTE([warn_unused_result])
 AC_CHECK_TYPES([struct timespec, clockid_t], [], [], [[#include <time.h>]])
 AC_SEARCH_LIBS([clock_gettime], [rt posix4])
 AC_CHECK_FUNCS([clock_gettime])
-AC_CHECK_FUNCS([sched_setscheduler sched_get_priority_min sched_get_priority_max nice])
+AC_CHECK_FUNCS([sched_setscheduler sched_getscheduler sched_getparam sched_get_priority_min sched_get_priority_max getpriority setpriority nice])
 AC_CHECK_FUNCS([recvmmsg])
 
 AC_TYPE_INT8_T
@@ -153,6 +162,10 @@ AC_HEADER_MAJOR
 AC_HEADER_RESOLV
 
 AC_CHECK_HEADERS_ONCE([sys/prctl.h])
+AC_CHECK_HEADERS_ONCE([sys/vfs.h])
+AC_CHECK_HEADERS_ONCE([sys/statfs.h])
+AC_CHECK_HEADERS_ONCE([sys/statvfs.h])
+AC_CHECK_HEADERS_ONCE([sys/mount.h])
 
 if test "${enable_accept4}" != "no"; then
     AC_CHECK_FUNCS_ONCE(accept4)
@@ -165,21 +178,24 @@ AC_MSG_CHECKING([operating system])
 case "$host_os" in
 freebsd*)
     build_target=freebsd
+    build_target_id=2
     CFLAGS="${CFLAGS} -I/usr/local/include"
     ;;
 darwin*)
     build_target=macos
+    build_target_id=3
     LDFLAGS="${LDFLAGS} -framework CoreFoundation -framework IOKit"
     ;;
 *)
     build_target=linux
+    build_target_id=1
     ;;
 esac
 
 AM_CONDITIONAL([FREEBSD], [test "${build_target}" = "freebsd"])
 AM_CONDITIONAL([MACOS], [test "${build_target}" = "macos"])
 AM_CONDITIONAL([LINUX], [test "${build_target}" = "linux"])
-AC_MSG_RESULT([${build_target}])
+AC_MSG_RESULT([${build_target} with id ${build_target_id}])
 
 
 # -----------------------------------------------------------------------------
@@ -481,17 +497,42 @@ AC_MSG_RESULT([${enable_lto}])
 
 AC_DEFINE_UNQUOTED([NETDATA_USER], ["${with_user}"], [use this user to drop privileged])
 
-AC_SUBST([varlibdir], ["\$(localstatedir)/lib/netdata"])
-AC_SUBST([registrydir], ["\$(localstatedir)/lib/netdata/registry"])
-AC_SUBST([cachedir], ["\$(localstatedir)/cache/netdata"])
-AC_SUBST([chartsdir], ["\$(libexecdir)/netdata/charts.d"])
-AC_SUBST([nodedir], ["\$(libexecdir)/netdata/node.d"])
-AC_SUBST([pythondir], ["\$(libexecdir)/netdata/python.d"])
-AC_SUBST([configdir], ["\$(sysconfdir)/netdata"])
-AC_SUBST([logdir], ["\$(localstatedir)/log/netdata"])
-AC_SUBST([pluginsdir], ["\$(libexecdir)/netdata/plugins.d"])
+varlibdir="${localstatedir}/lib/netdata"
+registrydir="${localstatedir}/lib/netdata/registry"
+cachedir="${localstatedir}/cache/netdata"
+chartsdir="${libexecdir}/netdata/charts.d"
+nodedir="${libexecdir}/netdata/node.d"
+pythondir="${libexecdir}/netdata/python.d"
+configdir="${sysconfdir}/netdata"
+libconfigdir="${libdir}/netdata/conf.d"
+logdir="${localstatedir}/log/netdata"
+pluginsdir="${libexecdir}/netdata/plugins.d"
+
+AC_SUBST([build_target])
+AC_SUBST([varlibdir])
+AC_SUBST([registrydir])
+AC_SUBST([cachedir])
+AC_SUBST([chartsdir])
+AC_SUBST([nodedir])
+AC_SUBST([pythondir])
+AC_SUBST([configdir])
+AC_SUBST([libconfigdir])
+AC_SUBST([logdir])
+AC_SUBST([pluginsdir])
 AC_SUBST([webdir])
 
+CPPFLAGS="\
+    -DTARGET_OS=${build_target_id} \
+	-DVARLIB_DIR=\"\\\"${varlibdir}\\\"\" \
+	-DCACHE_DIR=\"\\\"${cachedir}\\\"\" \
+	-DCONFIG_DIR=\"\\\"${configdir}\\\"\" \
+	-DLIBCONFIG_DIR=\"\\\"${libconfigdir}\\\"\" \
+	-DLOG_DIR=\"\\\"${logdir}\\\"\" \
+	-DPLUGINS_DIR=\"\\\"${pluginsdir}\\\"\" \
+	-DRUN_DIR=\"\\\"${localstatedir}/run/netdata\\\"\" \
+	-DWEB_DIR=\"\\\"${webdir}\\\"\" \
+"
+
 AC_SUBST([OPTIONAL_MATH_CLFAGS])
 AC_SUBST([OPTIONAL_MATH_LIBS])
 AC_SUBST([OPTIONAL_NFACCT_CLFAGS])
@@ -507,19 +548,85 @@ AC_SUBST([OPTIONAL_IPMIMONITORING_LIBS])
 
 AC_CONFIG_FILES([
     Makefile
-    charts.d/Makefile
-    conf.d/Makefile
     netdata.spec
-    python.d/Makefile
-    node.d/Makefile
-    plugins.d/Makefile
-    src/Makefile
-    system/Makefile
-    web/Makefile
+    backends/graphite/Makefile
+    backends/json/Makefile
+    backends/Makefile
+    backends/opentsdb/Makefile
+    backends/prometheus/Makefile
+    collectors/Makefile
+    collectors/apps.plugin/Makefile
+    collectors/cgroups.plugin/Makefile
+    collectors/charts.d.plugin/Makefile
+    collectors/checks.plugin/Makefile
+    collectors/diskspace.plugin/Makefile
+    collectors/fping.plugin/Makefile
+    collectors/freebsd.plugin/Makefile
+    collectors/freeipmi.plugin/Makefile
+    collectors/idlejitter.plugin/Makefile
+    collectors/macos.plugin/Makefile
+    collectors/nfacct.plugin/Makefile
+    collectors/node.d.plugin/Makefile
+    collectors/plugins.d/Makefile
+    collectors/proc.plugin/Makefile
+    collectors/python.d.plugin/Makefile
+    collectors/statsd.plugin/Makefile
+    collectors/tc.plugin/Makefile
+    contrib/Makefile
+    daemon/Makefile
+    database/Makefile
     diagrams/Makefile
+    health/Makefile
+    health/notifications/Makefile
+    libnetdata/Makefile
+    libnetdata/adaptive_resortable_list/Makefile
+    libnetdata/avl/Makefile
+    libnetdata/buffer/Makefile
+    libnetdata/clocks/Makefile
+    libnetdata/config/Makefile
+    libnetdata/dictionary/Makefile
+    libnetdata/eval/Makefile
+    libnetdata/locks/Makefile
+    libnetdata/log/Makefile
+    libnetdata/popen/Makefile
+    libnetdata/procfile/Makefile
+    libnetdata/simple_pattern/Makefile
+    libnetdata/socket/Makefile
+    libnetdata/statistical/Makefile
+    libnetdata/storage_number/Makefile
+    libnetdata/threads/Makefile
+    libnetdata/url/Makefile
     makeself/Makefile
-    contrib/Makefile
+    registry/Makefile
+    streaming/Makefile
+    system/Makefile
     tests/Makefile
+    web/Makefile
+    web/api/Makefile
+    web/api/badges/Makefile
+    web/api/exporters/Makefile
+    web/api/exporters/shell/Makefile
+    web/api/exporters/prometheus/Makefile
+    web/api/formatters/Makefile
+    web/api/formatters/csv/Makefile
+    web/api/formatters/json/Makefile
+    web/api/formatters/ssv/Makefile
+    web/api/formatters/value/Makefile
+    web/api/queries/Makefile
+    web/api/queries/average/Makefile
+    web/api/queries/des/Makefile
+    web/api/queries/incremental_sum/Makefile
+    web/api/queries/max/Makefile
+    web/api/queries/median/Makefile
+    web/api/queries/min/Makefile
+    web/api/queries/ses/Makefile
+    web/api/queries/stddev/Makefile
+    web/api/queries/sum/Makefile
+    web/gui/Makefile
+    web/server/Makefile
+    web/server/single/Makefile
+    web/server/multi/Makefile
+    web/server/static/Makefile
 ])
 AC_OUTPUT
 
diff --git a/contrib/Makefile.am b/contrib/Makefile.am
index d9250179b..80d80d371 100644
--- a/contrib/Makefile.am
+++ b/contrib/Makefile.am
@@ -1,4 +1,6 @@
-MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 
 dist_noinst_DATA = \
 	README.md \
@@ -22,7 +24,6 @@ dist_noinst_DATA = \
 
 dist_noinst_SCRIPTS = \
 	debian/netdata.init \
-	nc-backend.sh \
 	$(NULL)
 
 debian/changelog:
diff --git a/contrib/Makefile.in b/contrib/Makefile.in
index 094053096..789a7bfd9 100644
--- a/contrib/Makefile.in
+++ b/contrib/Makefile.in
@@ -14,6 +14,8 @@
 
 @SET_MAKE@
 
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 
 VPATH = @srcdir@
 am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
@@ -83,14 +85,16 @@ subdir = contrib
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(dist_noinst_SCRIPTS) $(dist_noinst_DATA)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -217,6 +221,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -238,6 +243,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
@@ -287,7 +293,6 @@ dist_noinst_DATA = \
 
 dist_noinst_SCRIPTS = \
 	debian/netdata.init \
-	nc-backend.sh \
 	$(NULL)
 
 all: all-am
diff --git a/contrib/debian/changelog b/contrib/debian/changelog
new file mode 100644
index 000000000..730844070
--- /dev/null
+++ b/contrib/debian/changelog
@@ -0,0 +1,3 @@
+netdata (1.11.0~rolling) UNRELEASED; urgency=medium
+  * Latest release
+ -- Netdata Team <>  Fri, 02 Nov 2018 14:25:18 +0000
diff --git a/contrib/debian/compat b/contrib/debian/compat
new file mode 100644
index 000000000..ec635144f
--- /dev/null
+++ b/contrib/debian/compat
@@ -0,0 +1 @@
+9
diff --git a/contrib/debian/control b/contrib/debian/control
new file mode 100644
index 000000000..0f4f1bc05
--- /dev/null
+++ b/contrib/debian/control
@@ -0,0 +1,25 @@
+Source: netdata
+Build-Depends: debhelper (>= 9),
+               dh-autoreconf,
+               dh-systemd (>= 1.5),
+               dpkg-dev (>= 1.13.19),
+               zlib1g-dev,
+               uuid-dev
+Section: net
+Priority: optional
+Maintainer: Costa Tsaousis <costa@tsaousis.gr>
+Standards-Version: 3.9.6
+Homepage: https://github.com/netdata/netdata/wiki
+
+Package: netdata
+Architecture: any
+Depends: adduser,
+         libcap2-bin (>= 1:2.0),
+         lsb-base (>= 3.1-23.2),
+         ${misc:Depends},
+         ${shlibs:Depends}
+Description: real-time charts for system monitoring
+ Netdata is a daemon that collects data in realtime (per second)
+ and presents a web site to view and analyze them. The presentation
+ is also real-time and full of interactive charts that precisely
+ render all collected values.
diff --git a/contrib/debian/control.wheezy b/contrib/debian/control.wheezy
new file mode 100644
index 000000000..cde1d560c
--- /dev/null
+++ b/contrib/debian/control.wheezy
@@ -0,0 +1,25 @@
+Source: netdata
+Build-Depends: debhelper (>= 9),
+               dh-autoreconf,
+               pkg-config,
+               dpkg-dev (>= 1.13.19),
+               zlib1g-dev,
+               uuid-dev
+Section: net
+Priority: optional
+Maintainer: Costa Tsaousis <costa@tsaousis.gr>
+Standards-Version: 3.9.6
+Homepage: https://github.com/netdata/netdata/wiki
+
+Package: netdata
+Architecture: any
+Depends: adduser,
+         libcap2-bin (>= 1:2.0),
+         lsb-base (>= 3.1-23.2),
+         ${misc:Depends},
+         ${shlibs:Depends}
+Description: real-time charts for system monitoring
+ Netdata is a daemon that collects data in realtime (per second)
+ and presents a web site to view and analyze them. The presentation
+ is also real-time and full of interactive charts that precisely
+ render all collected values.
diff --git a/contrib/debian/copyright b/contrib/debian/copyright
new file mode 100644
index 000000000..085580ea1
--- /dev/null
+++ b/contrib/debian/copyright
@@ -0,0 +1,10 @@
+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: Netdata
+Upstream-Contact: Costa Tsaousis <costa@tsaousis.gr>
+Source: https://github.com/netdata/netdata
+
+Files: *
+Copyright: 2014-2016, Costa Tsaousis
+License: GPL-3+
+ On Debian systems, the complete text of the GNU General Public
+ License version 3 can be found in /usr/share/common-licenses/GPL-3.
diff --git a/contrib/debian/netdata.conf b/contrib/debian/netdata.conf
new file mode 100644
index 000000000..a963d80b7
--- /dev/null
+++ b/contrib/debian/netdata.conf
@@ -0,0 +1,16 @@
+# NetData Configuration
+
+# The current full configuration can be retrieved from the running
+# server at the URL
+#
+#   http://localhost:19999/netdata.conf
+#
+# for example:
+#
+#   wget -O /etc/netdata/netdata.conf http://localhost:19999/netdata.conf
+#
+
+[global]
+	run as user = netdata
+	web files owner = root
+	web files group = netdata
diff --git a/contrib/debian/netdata.default b/contrib/debian/netdata.default
new file mode 100644
index 000000000..9e7f8ae6e
--- /dev/null
+++ b/contrib/debian/netdata.default
@@ -0,0 +1,5 @@
+# Extra arguments to pass to netdata
+#
+#EXTRA_OPTS=""
+#uncomment following line if you are building a wheezy-package
+#EXTRA_OPTS="-P /var/run/netdata.pid"
diff --git a/contrib/debian/netdata.docs b/contrib/debian/netdata.docs
new file mode 100644
index 000000000..56631abf1
--- /dev/null
+++ b/contrib/debian/netdata.docs
@@ -0,0 +1 @@
+ChangeLog
diff --git a/contrib/debian/netdata.init b/contrib/debian/netdata.init
new file mode 100755
index 000000000..c1b2b74de
--- /dev/null
+++ b/contrib/debian/netdata.init
@@ -0,0 +1,56 @@
+#!/bin/sh
+# Start/stop the netdata daemon.
+#
+### BEGIN INIT INFO
+# Provides:          netdata
+# Required-Start:    $remote_fs
+# Required-Stop:     $remote_fs
+# Should-Start:      $network
+# Should-Stop:       $network
+# Default-Start:     2 3 4 5
+# Default-Stop:
+# Short-Description: Real-time charts for system monitoring
+# Description:       Netdata is a daemon that collects data in realtime (per second)
+#                    and presents a web site to view and analyze them. The presentation
+#                    is also real-time and full of interactive charts that precisely
+#                    render all collected values.
+### END INIT INFO
+
+PATH=/bin:/usr/bin:/sbin:/usr/sbin
+DESC="netdata daemon"
+NAME=netdata
+DAEMON=/usr/sbin/netdata
+PIDFILE=/var/run/netdata/netdata.pid
+SCRIPTNAME=/etc/init.d/"$NAME"
+
+test -f $DAEMON || exit 0
+
+. /lib/lsb/init-functions
+
+[ -r /etc/default/netdata ] && . /etc/default/netdata
+
+case "$1" in
+start)	log_daemon_msg "Starting real-time system monitoring" "netdata"
+        start_daemon -p $PIDFILE $DAEMON $EXTRA_OPTS
+        log_end_msg $?
+	;;
+stop)	log_daemon_msg "Stopping real-time system monitoring" "netdata"
+        killproc -p $PIDFILE $DAEMON
+        RETVAL=$?
+        [ $RETVAL -eq 0 ] && [ -e "$PIDFILE" ] && rm -f $PIDFILE
+        log_end_msg $RETVAL
+	# wait for plugins to exit
+	sleep 1
+        ;;
+restart|force-reload) log_daemon_msg "Restarting real-time system monitoring" "netdata"
+        $0 stop
+        $0 start
+        ;;
+status)
+        status_of_proc -p $PIDFILE $DAEMON $NAME && exit 0 || exit $?
+        ;;
+*)	log_action_msg "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}"
+        exit 2
+        ;;
+esac
+exit 0
diff --git a/contrib/debian/netdata.install b/contrib/debian/netdata.install
new file mode 100644
index 000000000..45d42b635
--- /dev/null
+++ b/contrib/debian/netdata.install
@@ -0,0 +1 @@
+debian/netdata.conf /etc/netdata/
diff --git a/contrib/debian/netdata.lintian-overrides b/contrib/debian/netdata.lintian-overrides
new file mode 100644
index 000000000..45b2d868f
--- /dev/null
+++ b/contrib/debian/netdata.lintian-overrides
@@ -0,0 +1,16 @@
+
+# See Debian policy 10.9. apps.plugin has extra capabilities, so don't let
+# normal users run it.
+netdata: non-standard-executable-perm usr/lib/*/netdata/plugins.d/apps.plugin 0754 != 0755
+
+
+# FontAwesome is at least in the fonts-font-awesome package, but this is
+# not available in wheezy. glyphicons-halflings-regular isn't currently in
+# a Debian package. Therefore don't complain about shipping them with netdata
+# for the time being.
+netdata: duplicate-font-file usr/share/netdata/fonts/*
+netdata: font-in-non-font-package usr/share/netdata/fonts/*
+
+# Files here are marked as conffiles so that local updates to the html files
+# isn't clobbered on upgrade.
+netdata: non-etc-file-marked-as-conffile var/lib/netdata/www/*
diff --git a/contrib/debian/netdata.postinst.in b/contrib/debian/netdata.postinst.in
new file mode 100644
index 000000000..29615f541
--- /dev/null
+++ b/contrib/debian/netdata.postinst.in
@@ -0,0 +1,41 @@
+#! /bin/sh
+
+set -e
+
+case "$1" in
+  configure)
+        if [ -z "$2" ]; then
+          if ! getent group netdata >/dev/null; then
+              addgroup --quiet --system netdata
+          fi
+
+          if ! getent passwd netdata >/dev/null; then
+              adduser --quiet --system --ingroup netdata --home /var/lib/netdata --no-create-home netdata
+          fi
+
+          if ! dpkg-statoverride --list /var/lib/netdata >/dev/null 2>&1; then
+              dpkg-statoverride --update --add netdata netdata 0755 /var/lib/netdata
+          fi
+
+          if ! dpkg-statoverride --list /var/lib/netdata/www >/dev/null 2>&1; then
+              dpkg-statoverride --update --add root netdata 0755 /var/lib/netdata/www
+          fi
+
+          if ! dpkg-statoverride --list /var/cache/netdata >/dev/null 2>&1; then
+              dpkg-statoverride --update --add netdata netdata 0755 /var/cache/netdata
+          fi
+
+        fi
+
+        dpkg-statoverride --update --add --force root netdata 0775 /var/lib/netdata/registry
+        chown -R root:netdata /usr/share/netdata/*
+        chown -R root:netdata /usr/lib/@DEB_HOST_MULTIARCH@/netdata/plugins.d
+        setcap cap_dac_read_search,cap_sys_ptrace+ep /usr/lib/@DEB_HOST_MULTIARCH@/netdata/plugins.d/apps.plugin
+
+#PERMS#
+        ;;
+esac
+
+#DEBHELPER#
+
+exit 0
diff --git a/contrib/debian/netdata.postrm b/contrib/debian/netdata.postrm
new file mode 100644
index 000000000..4ab4eeadd
--- /dev/null
+++ b/contrib/debian/netdata.postrm
@@ -0,0 +1,43 @@
+#! /bin/sh
+
+set -e
+
+case "$1" in
+	remove)
+		;;
+
+	purge)
+		if dpkg-statoverride --list | grep -qw /var/cache/netdata; then
+			dpkg-statoverride --remove /var/cache/netdata
+		fi
+
+		if dpkg-statoverride --list | grep -qw /var/lib/netdata/www; then
+			dpkg-statoverride --remove /var/lib/netdata/www
+		fi
+
+		if dpkg-statoverride --list | grep -qw /var/lib/netdata; then
+			dpkg-statoverride --remove /var/lib/netdata
+		fi
+
+		if getent passwd netdata >/dev/null; then
+			if [ -x /usr/sbin/deluser ]; then
+				deluser --quiet --system netdata || echo "Unable to remove netdata user"
+			fi
+		fi
+
+		if getent group netdata >/dev/null; then
+			if [ -x /usr/sbin/delgroup ]; then
+				delgroup --quiet --system netdata || echo "Unable to remove netdata group"
+			fi
+		fi
+
+		;;
+
+	*)
+		;;
+esac
+
+#DEBHELPER#
+
+exit 0
+
diff --git a/contrib/debian/netdata.service b/contrib/debian/netdata.service
new file mode 100644
index 000000000..e5d3a3863
--- /dev/null
+++ b/contrib/debian/netdata.service
@@ -0,0 +1,14 @@
+[Unit]
+Description=netdata real-time system monitoring
+After=network.target
+
+[Service]
+Type=simple
+EnvironmentFile=-/etc/default/netdata
+ExecStart=/usr/sbin/netdata -D $EXTRA_OPTS
+TimeoutStopSec=30
+Restart=always
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
diff --git a/contrib/debian/rules b/contrib/debian/rules
new file mode 100755
index 000000000..ec4ec4182
--- /dev/null
+++ b/contrib/debian/rules
@@ -0,0 +1,87 @@
+#!/usr/bin/make -f
+
+# Find the arch we are building for, as this determines
+# the location of plugins in /usr/lib
+DEB_HOST_MULTIARCH ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
+TOP = $(CURDIR)/debian/netdata
+
+%:
+	# For jessie and beyond
+	#
+	dh $@ --with autoreconf,systemd
+
+	# For wheezy or other non-systemd distributions use the following. You
+	# should also see contrib/README.md which gives details of updates to
+	# make to debian/control.
+	#
+	#dh $@ --with autoreconf
+
+override_dh_auto_configure:
+	dh_auto_configure -- --with-math --with-webdir=/var/lib/netdata/www
+
+debian/%.postinst: debian/%.postinst.in
+	sed 's/@DEB_HOST_MULTIARCH@/$(DEB_HOST_MULTIARCH)/g' $< > $@
+
+override_dh_install: debian/netdata.postinst
+	dh_install
+
+	# Remove unneeded .keep files
+	#
+	find "$(TOP)" -name .keep -exec rm '{}' ';'
+
+	# Move files that local user shouldn't be editing to /usr/share/netdata
+	#
+	mkdir -p "$(TOP)/usr/share/netdata"
+	for D in $$(find "$(TOP)/var/lib/netdata/www/" -maxdepth 1 -type d -printf '%f '); do \
+		echo Relocating $$D; \
+		mv "$(TOP)/var/lib/netdata/www/$$D" "$(TOP)/usr/share/netdata/$$D"; \
+		ln -s "/usr/share/netdata/$$D" "$(TOP)/var/lib/netdata/www/$$D"; \
+	done
+
+	# Update postinst to set correct group for www files on installation.
+	# Should probably be dpkg-statoverride really, but that gets *really*
+	# messy. We also set all web files in /var as conffiles so an upgrade
+	# doesn't splat them.
+	#
+	for D in $$(find "$(TOP)/var/lib/netdata/www/" -maxdepth 1 -type f -printf '%f '); do \
+		echo Updating postinst for $$D; \
+		sed -i "s/^#PERMS#/chgrp netdata \/var\/lib\/netdata\/www\/$$D\n#PERMS#/g" \
+			$(CURDIR)/debian/netdata.postinst; \
+		echo "/var/lib/netdata/www/$$D" >> $(CURDIR)/debian/netdata.conffiles; \
+	done
+	sed -i "/^#PERMS#/d" $(CURDIR)/debian/netdata.postinst
+
+override_dh_installdocs:
+	dh_installdocs
+
+	# Docs should not be under /usr/lib
+	#
+	mv $(TOP)/usr/lib/$(DEB_HOST_MULTIARCH)/netdata/plugins.d/README.md \
+		$(TOP)/usr/share/doc/netdata/README.plugins.md
+	mv $(TOP)/usr/lib/$(DEB_HOST_MULTIARCH)/netdata/charts.d/README.md \
+		$(TOP)/usr/share/doc/netdata/README.charts.md
+
+	# This doc is currently empty, so no point installing it.
+	#
+	rm $(TOP)/usr/lib/$(DEB_HOST_MULTIARCH)/netdata/node.d/README.md
+
+override_dh_fixperms:
+	dh_fixperms
+
+	# apps.plugin should only be runnable by the netdata user. It will be
+	# given extra capabilities in the postinst script.
+	#
+	chmod 0754 $(TOP)/usr/lib/$(DEB_HOST_MULTIARCH)/netdata/plugins.d/apps.plugin
+
+override_dh_installlogrotate:
+	cp system/netdata.logrotate debian/netdata.logrotate
+	dh_installlogrotate
+
+override_dh_clean:
+	dh_clean
+
+	# Tidy up copied/generated files
+	#
+	-[ -r $(CURDIR)/debian/netdata.logrotate ] && rm $(CURDIR)/debian/netdata.logrotate
+	-[ -r $(CURDIR)/debian/netdata.postinst ] && rm $(CURDIR)/debian/netdata.postinst
+	-[ -r $(CURDIR)/debian/netdata.conffiles ] && rm $(CURDIR)/debian/netdata.conffiles
diff --git a/contrib/debian/source/format b/contrib/debian/source/format
new file mode 100644
index 000000000..89ae9db8f
--- /dev/null
+++ b/contrib/debian/source/format
@@ -0,0 +1 @@
+3.0 (native)
diff --git a/contrib/rhel/build-netdata-rpm.sh b/contrib/rhel/build-netdata-rpm.sh
index 051969091..927318fb1 100755
--- a/contrib/rhel/build-netdata-rpm.sh
+++ b/contrib/rhel/build-netdata-rpm.sh
@@ -3,12 +3,13 @@
 # docker run -it --rm centos:6.9 /bin/sh
 # yum -y install rpm-build redhat-rpm-config yum-utils autoconf automake curl gcc git libmnl-devel libuuid-devel make pkgconfig zlib-devel
 
-cd $(dirname $0)/../../ || exit 1
+cd "$(dirname "$0")/../../" || exit 1
+# shellcheck disable=SC1091
 source "installer/functions.sh" || exit 1
 
 set -e
 
-run ./autogen.sh
+run autoreconf -ivf
 run ./configure --enable-maintainer-mode
 run make dist
 
@@ -27,7 +28,7 @@ then
 fi
 
 srpm=$(run rpmbuild -ts "${tgz}" | cut -d ' ' -f 2)
-if [ -z "${srpm}" -o ! -f "${srpm}" ]
+if [ -z "${srpm}" ] || [ ! -f "${srpm}" ]
 then
 	echo >&2 "Cannot find the generated SRPM file '${srpm}'"
 	exit 1
diff --git a/coverity-scan.sh b/coverity-scan.sh
index 5ca093140..1bf0a5804 100755
--- a/coverity-scan.sh
+++ b/coverity-scan.sh
@@ -1,47 +1,67 @@
 #!/usr/bin/env bash
+# shellcheck disable=SC2235
 
-cpus=$(grep ^processor </proc/cpuinfo| wc -l)
+# To run this script you need to provide API token. This can be done either by:
+#  - Putting token in ".coverity-token" file
+#  - Assigning token value to COVERITY_SCAN_TOKEN environment variable
+# Additionally script can install coverity tool on your computer. To do this just set environment variable INSTALL_COVERITY to "true"
+
+cpus=$(grep -c ^processor </proc/cpuinfo)
 [ -z "${cpus}" ] && cpus=1
 
-token=
-[ -f .coverity-token ] && token="$(<.coverity-token)"
-[ -z "${token}" ] && \
-	echo >&2 "Save the coverity token to .coverity-token" && \
+token="${COVERITY_SCAN_TOKEN}"
+([ -z "${token}" ] && [ -f .coverity-token ]) && token="$(<.coverity-token)"
+if [ -z "${token}" ]; then
+	echo >&2 "Save the coverity token to .coverity-token or export it as COVERITY_SCAN_TOKEN."
 	exit 1
+fi
 
-echo >&2 "Coverity token: ${token}"
-
+# shellcheck disable=SC2230
 covbuild="$(which cov-build 2>/dev/null || command -v cov-build 2>/dev/null)"
-[ -z "${covbuild}" -a -f .coverity-build ] && covbuild="$(<.coverity-build)"
-[ -z "${covbuild}" ] && \
-	echo "Save command the full filename of cov-build in .coverity-build" && \
-	exit 1
+([ -z "${covbuild}" ] && [ -f .coverity-build ]) && covbuild="$(<.coverity-build)"
+if [ -z "${covbuild}" ]; then
+	echo "Cannot find 'cov-build' binary in \$PATH."
+	if [ "${INSTALL_COVERITY}" != "" ]; then
+		echo "Installing coverity..."
+		mkdir /tmp/coverity
+		curl -SL --data "token=${token}&project=netdata%2Fnetdata" https://scan.coverity.com/download/linux64 > /tmp/coverity_tool.tar.gz
+		tar -x -C /tmp/coverity/ -f /tmp/coverity_tool.tar.gz
+		sudo mv /tmp/coverity/cov-analysis-linux64-2017.07 /opt/coverity
+		export PATH=${PATH}:/opt/coverity/bin/
+		# shellcheck disable=SC2230
+		covbuild="$(which cov-build 2>/dev/null || command -v cov-build 2>/dev/null)"
+	else
+		echo "Save command the full filename of cov-build in .coverity-build"
+		exit 1
+	fi
+fi
 
-[ ! -x "${covbuild}" ] && \
-	echo "The command ${covbuild} is not executable. Save command the full filename of cov-build in .coverity-build" && \
+if [ ! -x "${covbuild}" ]; then
+	echo "The command ${covbuild} is not executable. Save command the full filename of cov-build in .coverity-build"
 	exit 1
+fi
 
-version="$(cat config.h | grep "^#define PACKAGE_VERSION" | cut -d '"' -f 2)"
+version="$(grep "^#define PACKAGE_VERSION" config.h | cut -d '"' -f 2)"
 echo >&2 "Working on netdata version: ${version}"
 
 echo >&2 "Cleaning up old builds..."
-make clean || exit 1
+make clean || echo "Nothing to clean"
 
-[ -d "cov-int" ] && \
-	rm -rf "cov-int"
+[ -d "cov-int" ] && rm -rf "cov-int"
 
-[ -f netdata-coverity-analysis.tgz ] && \
-	rm netdata-coverity-analysis.tgz
+[ -f netdata-coverity-analysis.tgz ] && rm netdata-coverity-analysis.tgz
 
+autoreconf -ivf
+./configure --enable-plugin-nfacct --enable-plugin-freeipmi
 "${covbuild}" --dir cov-int make -j${cpus} || exit 1
 
 echo >&2 "Compressing data..."
 tar czvf netdata-coverity-analysis.tgz cov-int || exit 1
 
-echo >&2 "Sending analysis..."
+echo >&2 "Sending analysis for version ${version} ..."
 curl --progress-bar --form token="${token}" \
   --form email=costa@tsaousis.gr \
   --form file=@netdata-coverity-analysis.tgz \
   --form version="${version}" \
   --form description="netdata, real-time performance monitoring, done right." \
-  https://scan.coverity.com/builds?project=firehol%2Fnetdata
+  https://scan.coverity.com/builds?project=netdata%2Fnetdata
diff --git a/cppcheck.sh b/cppcheck.sh
index 841f01d26..ebbeeaf8f 100755
--- a/cppcheck.sh
+++ b/cppcheck.sh
@@ -2,25 +2,24 @@
 
 # echo >>/tmp/cppcheck.log "cppcheck ${*}"
 
+# shellcheck disable=SC2230
 cppcheck=$(which cppcheck 2>/dev/null || command -v cppcheck 2>/dev/null)
 [ -z "${cppcheck}" ] && echo >&2 "install cppcheck." && exit 1
 
-[ -x "/home/costa/src/cppcheck.git/cppcheck" ] && \
-	cppcheck="/home/costa/src/cppcheck.git/cppcheck"
-
 processors=$(grep -c ^processor /proc/cpuinfo)
 [ $(( processors )) -lt 1 ] && processors=1
 
 base="$(dirname "${0}")"
 [ "${base}" = "." ] && base="${PWD}"
 
-cd "${base}/src" || exit 1
+cd "${base}" || exit 1
 
 [ ! -d "cppcheck-build" ] && mkdir "cppcheck-build"
 
 file="${1}"
 shift
-[ "${file}" = "${base}" -o -z "${file}" ] && file="${base}/src"
+# shellcheck disable=SC2235
+([ "${file}" = "${base}" ] || [ -z "${file}" ]) && file="${base}"
 
 "${cppcheck}" \
 	-j ${processors} \
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
new file mode 100644
index 000000000..bdd02774c
--- /dev/null
+++ b/daemon/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/daemon/Makefile.in b/daemon/Makefile.in
new file mode 100644
index 000000000..8c7ad21a5
--- /dev/null
+++ b/daemon/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+VPATH = @srcdir@
+am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
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+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
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+POST_INSTALL = :
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+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
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+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
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+am__v_at_1 = 
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+ECHO_C = @ECHO_C@
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+INSTALL_DATA = @INSTALL_DATA@
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+OBJEXT = @OBJEXT@
+OPTIONAL_IPMIMONITORING_CFLAGS = @OPTIONAL_IPMIMONITORING_CFLAGS@
+OPTIONAL_IPMIMONITORING_LIBS = @OPTIONAL_IPMIMONITORING_LIBS@
+OPTIONAL_LIBCAP_CFLAGS = @OPTIONAL_LIBCAP_CFLAGS@
+OPTIONAL_LIBCAP_LIBS = @OPTIONAL_LIBCAP_LIBS@
+OPTIONAL_MATH_CLFAGS = @OPTIONAL_MATH_CLFAGS@
+OPTIONAL_MATH_LIBS = @OPTIONAL_MATH_LIBS@
+OPTIONAL_NFACCT_CLFAGS = @OPTIONAL_NFACCT_CLFAGS@
+OPTIONAL_NFACCT_LIBS = @OPTIONAL_NFACCT_LIBS@
+OPTIONAL_UUID_CLFAGS = @OPTIONAL_UUID_CLFAGS@
+OPTIONAL_UUID_LIBS = @OPTIONAL_UUID_LIBS@
+OPTIONAL_ZLIB_CLFAGS = @OPTIONAL_ZLIB_CLFAGS@
+OPTIONAL_ZLIB_LIBS = @OPTIONAL_ZLIB_LIBS@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_RPM_RELEASE = @PACKAGE_RPM_RELEASE@
+PACKAGE_RPM_VERSION = @PACKAGE_RPM_VERSION@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PTHREAD_CC = @PTHREAD_CC@
+PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
+PTHREAD_LIBS = @PTHREAD_LIBS@
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+SHELL = @SHELL@
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diff --git a/daemon/README.md b/daemon/README.md
new file mode 100644
index 000000000..2a5ebfa0c
--- /dev/null
+++ b/daemon/README.md
@@ -0,0 +1,445 @@
+# Netdata daemon
+
+
+
+## Command line options
+
+Normally you don't need to supply any command line arguments to netdata.
+
+If you do though, they override the configuration equivalent options.
+
+To get a list of all command line parameters supported, run:
+
+```sh
+netdata -h
+```
+
+The program will print the supported command line parameters.
+
+The command line options of the netdata 1.10.0 version are the following:
+```
+
+ ^
+ |.-.   .-.   .-.   .-.   .  netdata                                         
+ |   '-'   '-'   '-'   '-'   real-time performance monitoring, done right!   
+ +----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+--->
+
+ Copyright (C) 2016-2017, Costa Tsaousis <costa@tsaousis.gr>
+ Released under GNU General Public License v3 or later.
+ All rights reserved.
+
+ Home Page  : https://my-netdata.io
+ Source Code: https://github.com/netdata/netdata
+ Wiki / Docs: https://github.com/netdata/netdata/wiki
+ Support    : https://github.com/netdata/netdata/issues
+ License    : https://github.com/netdata/netdata/blob/master/LICENSE.md
+
+ Twitter    : https://twitter.com/linuxnetdata
+ Facebook   : https://www.facebook.com/linuxnetdata/
+
+
+ SYNOPSIS: netdata [options]
+
+ Options:
+
+  -c filename              Configuration file to load.
+                           Default: /etc/netdata/netdata.conf
+
+  -D                       Do not fork. Run in the foreground.
+                           Default: run in the background
+
+  -h                       Display this help message.
+
+  -P filename              File to save a pid while running.
+                           Default: do not save pid to a file
+
+  -i IP                    The IP address to listen to.
+                           Default: all IP addresses IPv4 and IPv6
+
+  -p port                  API/Web port to use.
+                           Default: 19999
+
+  -s path                  Prefix for /proc and /sys (for containers).
+                           Default: no prefix
+
+  -t seconds               The internal clock of netdata.
+                           Default: 1
+
+  -u username              Run as user.
+                           Default: netdata
+
+  -v                       Print netdata version and exit.
+
+  -V                       Print netdata version and exit.
+
+  -W options               See Advanced options below.
+
+
+ Advanced options:
+
+  -W stacksize=N           Set the stacksize (in bytes).
+
+  -W debug_flags=N         Set runtime tracing to debug.log.
+
+  -W unittest              Run internal unittests and exit.
+
+  -W set section option value
+                           set netdata.conf option from the command line.
+
+  -W simple-pattern pattern string
+                           Check if string matches pattern and exit.
+
+
+ Signals netdata handles:
+
+  - HUP                    Close and reopen log files.
+  - USR1                   Save internal DB to disk.
+  - USR2                   Reload health configuration.
+```
+
+## Log files
+
+netdata uses 3 log files:
+
+1. `error.log`
+2. `access.log`
+3. `debug.log`
+
+Any of them can be disabled by setting it to `/dev/null` or `none` in `netdata.conf`.
+By default `error.log` and `access.log` are enabled. `debug.log` is only enabled if
+debugging/tracing is also enabled (netdata needs to be compiled with debugging enabled).
+
+Log files are stored in `/var/log/netdata/` by default.
+
+#### error.log
+
+The `error.log` is the `stderr` of the netdata daemon and all external plugins run by netdata.
+
+So if any process, in the netdata process tree, writes anything to its standard error,
+it will appear in `error.log`.
+
+For most netdata programs (including standard external plugins shipped by netdata), the
+following lines may appear:
+
+tag|description
+:---:|:----
+`INFO`|Something important the user should know.
+`ERROR`|Something that might disable a part of netdata.<br/>The log line includes `errno` (if it is not zero).
+`FATAL`|Something prevented a program from running.<br/>The log line includes `errno` (if it is not zero) and the program exited.
+
+So, when auto-detection of data collection fail, `ERROR` lines are logged and the relevant modules
+are disabled, but the program continues to run.
+
+When a netdata program cannot run at all, a `FATAL` line is logged.
+
+#### access.log
+
+The `access.log` logs web requests. The format is:
+
+```txt
+DATE: ID: (sent/all = SENT_BYTES/ALL_BYTES bytes PERCENT_COMPRESSION%, prep/sent/total PREP_TIME/SENT_TIME/TOTAL_TIME ms): ACTION CODE URL
+```
+
+where:
+
+ - `ID` is the client ID. Client IDs are auto-incremented every time a client connects to netdata.
+ - `SENT_BYTES` is the number of bytes sent to the client, without the HTTP response header.
+ - `ALL_BYTES` is the number of bytes of the response, before compression.
+ - `PERCENT_COMPRESSION` is the percentage of traffic saved due to compression.
+ - `PREP_TIME` is the time in milliseconds needed to prepared the response.
+ - `SENT_TIME` is the time in milliseconds needed to sent the response to the client.
+ - `TOTAL_TIME` is the total time the request was inside netdata (from the first byte of the request to the last byte of the response).
+ - `ACTION` can be `filecopy`, `options` (used in CORS), `data` (API call).
+
+
+#### debug.log
+
+See [debugging](#debugging).
+
+
+## OOM Score
+
+netdata runs with `OOMScore = 1000`. This means netdata will be the first to be killed when your
+server runs out of memory.
+
+You can set netdata OOMScore in `netdata.conf`, like this:
+
+```
+[global]
+    OOM score = 1000
+```
+
+netdata logs its OOM score when it starts:
+
+```sh
+# grep OOM /var/log/netdata/error.log
+2017-10-15 03:47:31: netdata INFO : Adjusted my Out-Of-Memory (OOM) score from 0 to 1000.
+```
+
+#### OOM score and systemd
+
+netdata will not be able to lower its OOM Score below zero, when it is started as the `netdata`
+user (systemd case).
+
+To allow netdata control its OOM Score in such cases, you will need to edit
+`netdata.service` and set:
+
+```
+[Service]
+# The minimum netdata Out-Of-Memory (OOM) score.
+# netdata (via [global].OOM score in netdata.conf) can only increase the value set here.
+# To decrease it, set the minimum here and set the same or a higher value in netdata.conf.
+# Valid values: -1000 (never kill netdata) to 1000 (always kill netdata).
+OOMScoreAdjust=-1000
+```
+
+Run `systemctl daemon-reload` to reload these changes.
+
+The above, sets and OOMScore for netdata to `-1000`, so that netdata can increase it via
+`netdata.conf`.
+
+If you want to control it entirely via systemd, you can set in `netdata.conf`:
+
+```
+[global]
+    OOM score = keep
+```
+
+Using the above, whatever OOM Score you have set at `netdata.service` will be maintained by netdata.
+
+
+## netdata process scheduling policy
+
+By default netdata runs with the `idle` process scheduling policy, so that it uses CPU resources, only when there is idle CPU to spare. On very busy servers (or weak servers), this can lead to gaps on the charts.
+
+You can set netdata scheduling policy in `netdata.conf`, like this:
+
+```
+[global]
+  process scheduling policy = idle
+```
+
+You can use the following:
+
+policy|description
+:-----:|:--------
+`idle`|use CPU only when there is spare - this is lower than nice 19 - it is the default for netdata and it is so low that netdata will run in "slow motion" under extreme system load, resulting in short (1-2 seconds) gaps at the charts.
+`other`<br/>or<br/>`nice`|this is the default policy for all processes under Linux. It provides dynamic priorities based on the `nice` level of each process. Check below for setting this `nice` level for netdata.
+`batch`|This policy is similar to `other` in that it schedules the thread according to its dynamic priority (based on the `nice` value).  The difference is that this policy will cause the scheduler to always assume that the thread is CPU-intensive.  Consequently, the scheduler will  apply a small scheduling penalty with respect to wake-up behavior, so that this thread is mildly disfavored in scheduling decisions.
+`fifo`|`fifo` can be used only with static priorities higher than 0, which means that when a `fifo` threads becomes runnable, it will always  immediately  preempt  any  currently running  `other`, `batch`, or `idle` thread.  `fifo` is a simple scheduling algorithm without time slicing.
+`rr`|a simple enhancement of `fifo`.  Everything described above for `fifo` also applies to `rr`, except that each thread is allowed to run only for a  maximum time quantum.
+`keep`<br/>or<br/>`none`|do not set scheduling policy, priority or nice level - i.e. keep running with whatever it is set already (e.g. by systemd).
+
+For more information see `man sched`.
+
+### scheduling priority for `rr` and `fifo`
+
+Once the policy is set to one of `rr` or `fifo`, the following will appear:
+
+```
+[global]
+    process scheduling priority = 0
+```
+
+These priorities are usually from 0 to 99. Higher numbers make the process more important.
+
+### nice level for policies `other` or `batch`
+
+When the policy is set to `other`, `nice`, or `batch`, the following will appear:
+
+```
+[global]
+    process nice level = 19
+```
+
+## scheduling settings and systemd
+
+netdata will not be able to set its scheduling policy and priority to more important values when it is started as the `netdata` user (systemd case).
+
+You can set these settings at `/etc/systemd/system/netdata.service`:
+
+```
+[Service]
+# By default netdata switches to scheduling policy idle, which makes it use CPU, only
+# when there is spare available.
+# Valid policies: other (the system default) | batch | idle | fifo | rr
+#CPUSchedulingPolicy=other
+
+# This sets the maximum scheduling priority netdata can set (for policies: rr and fifo).
+# netdata (via [global].process scheduling priority in netdata.conf) can only lower this value.
+# Priority gets values 1 (lowest) to 99 (highest).
+#CPUSchedulingPriority=1
+
+# For scheduling policy 'other' and 'batch', this sets the lowest niceness of netdata.
+# netdata (via [global].process nice level in netdata.conf) can only increase the value set here.
+#Nice=0
+```
+
+Run `systemctl daemon-reload` to reload these changes.
+
+Now, tell netdata to keep these settings, as set by systemd, by editing `netdata.conf` and setting:
+
+```
+[global]
+    process scheduling policy = keep
+```
+
+Using the above, whatever scheduling settings you have set at `netdata.service` will be maintained by netdata.
+
+
+#### Example 1: netdata with nice -1 on non-systemd systems
+
+On a system that is not based on systemd, to make netdata run with nice level -1 (a little bit higher to the default for all programs), edit netdata.conf and set:
+
+```
+[global]
+  process scheduling policy = other
+  process nice level = -1
+```
+
+then execute this to restart netdata:
+
+```sh
+sudo service netdata restart
+```
+
+
+#### Example 2: netdata with nice -1 on systemd systems
+
+On a system that is based on systemd, to make netdata run with nice level -1 (a little bit higher to the default for all programs), edit netdata.conf and set:
+
+```
+[global]
+  process scheduling policy = keep
+```
+
+edit /etc/systemd/system/netdata.service and set:
+
+```
+[Service]
+CPUSchedulingPolicy=other
+Nice=-1
+```
+
+then execute:
+
+```sh
+sudo systemctl daemon-reload
+sudo systemctl restart netdata
+```
+
+## virtual memory
+
+You may notice that netdata's virtual memory size, as reported by `ps` or `/proc/pid/status`
+(or even netdata's applications virtual memory chart)  is unrealistically high.
+
+For example, it may be reported to be 150+MB, even if the resident memory size is just 25MB.
+Similar values may be reported for netdata plugins too.
+
+Check this for example: A netdata installation with default settings on Ubuntu 16.04LTS.
+The top chart is **real memory used**, while the bottom one is **virtual memory**:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/19013772/5eb7173e-87e3-11e6-8f2b-a2ccfeb06faf.png)
+
+#### why this happens?
+
+The system memory allocator allocates virtual memory arenas, per thread running.
+On Linux systems this defaults to 16MB per thread on 64 bit machines. So, if you get the
+difference between real and virtual memory and divide it by 16MB you will roughly get the
+number of threads running.
+
+The system does this for speed. Having a separate memory arena for each thread, allows the
+threads to run in parallel in multi-core systems, without any locks between them.
+
+This behaviour is system specific. For example, the chart above when running netdata on alpine
+linux (that uses **musl** instead of **glibc**) is this:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/19013807/7cf5878e-87e4-11e6-9651-082e68701eab.png)
+
+#### can we do anything to lower it?
+
+Since netdata already uses minimal memory allocations while it runs (i.e. it adapts its memory
+on start, so that while repeatedly collects data it does not do memory allocations), it already
+instructs the system memory allocator to minimize the memory arenas for each thread. We have also
+added [2 configuration options](https://github.com/netdata/netdata/blob/5645b1ee35248d94e6931b64a8688f7f0d865ec6/src/main.c#L410-L418)
+to allow you tweak these settings.
+
+However, even if we instructed the memory allocator to use just one arena, it seems it allocates
+an arena per thread.
+
+netdata also supports `jemalloc` and `tcmalloc`, however both behave exactly the same to the
+glibc memory allocator in this aspect.
+
+#### Is this a problem?
+
+No, it is not.
+
+Linux reserves real memory (physical RAM) in pages (on x86 machines pages are 4KB each).
+So even if the system memory allocator is allocating huge amounts of virtual memory,
+only the 4KB pages that are actually used are reserving physical RAM. The **real memory** chart
+on netdata application section, shows the amount of physical memory these pages occupy(it
+accounts the whole pages, even if parts of them are actually used).
+
+
+## Debugging
+
+When you compile netdata with debugging:
+
+1. compiler optimizations for your CPU are disabled (netdata will run somewhat slower)
+
+2. a lot of code is added all over netdata, to log debug messages to `/var/log/netdata/debug.log`. However, nothing is printed by default. netdata allows you to select which sections of netdata you want to trace. Tracing is activated via the config option `debug flags`. It accepts a hex number, to enable or disable specific sections. You can find the options supported at [log.h](https://github.com/netdata/netdata/blob/master/libnetdata/log/log.h). They are the `D_*` defines. The value `0xffffffffffffffff` will enable all possible debug flags.
+
+Once netdata is compiled with debugging and tracing is enabled for a few sections, the file `/var/log/netdata/debug.log` will contain the messages.
+
+> Do not forget to disable tracing (`debug flags = 0`) when you are done tracing. The file `debug.log` can grow too fast.
+
+#### compiling netdata with debugging
+
+To compile netdata with debugging, use this:
+
+```sh
+# step into the netdata source directory
+cd /usr/src/netdata.git
+
+# run the installer with debugging enabled
+CFLAGS="-O1 -ggdb -DNETDATA_INTERNAL_CHECKS=1" ./netdata-installer.sh
+```
+
+The above will compile and install netdata with debugging info embedded. You can now use `debug flags` to set the section(s) you need to trace.
+
+#### debugging crashes
+
+We have made the most to make netdata crash free. If however, netdata crashes on your system, it would be very helpful to provide stack traces of the crash. Without them, is will be almost impossible to find the issue (the code base is quite large to find such an issue by just objerving it).
+
+To provide stack traces, **you need to have netdata compiled with debugging**. There is no need to enable any tracing (`debug flags`).
+
+Then you need to be in one of the following 2 cases:
+
+1. netdata crashes and you have a core dump
+
+2. you can reproduce the crash
+
+If you are not on these cases, you need to find a way to be (i.e. if your system does not produce core dumps, check your distro documentation to enable them).
+
+#### netdata crashes and you have a core dump
+
+> you need to have netdata compiled with debugging info for this to work (check above)
+
+Run the following command and post the output on a github issue.
+
+```sh
+gdb $(which netdata) /path/to/core/dump
+```
+
+#### you can reproduce a netdata crash on your system
+
+> you need to have netdata compiled with debugging info for this to work (check above)
+
+Install the package `valgrind` and run:
+
+```sh
+valgrind $(which netdata) -D
+```
+
+netdata will start and it will be a lot slower. Now reproduce the crash and `valgrind` will dump on your console the stack trace. Open a new github issue and post the output.
+
diff --git a/daemon/common.c b/daemon/common.c
new file mode 100644
index 000000000..e278cdf7c
--- /dev/null
+++ b/daemon/common.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "common.h"
+
+char *netdata_configured_hostname         = NULL;
+char *netdata_configured_user_config_dir  = CONFIG_DIR;
+char *netdata_configured_stock_config_dir = LIBCONFIG_DIR;
+char *netdata_configured_log_dir          = LOG_DIR;
+char *netdata_configured_plugins_dir      = NULL;
+char *netdata_configured_web_dir          = WEB_DIR;
+char *netdata_configured_cache_dir        = CACHE_DIR;
+char *netdata_configured_varlib_dir       = VARLIB_DIR;
+char *netdata_configured_home_dir         = CACHE_DIR;
+char *netdata_configured_host_prefix      = NULL;
+char *netdata_configured_timezone         = NULL;
+
diff --git a/daemon/common.h b/daemon/common.h
new file mode 100644
index 000000000..d912a30e7
--- /dev/null
+++ b/daemon/common.h
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_COMMON_H
+#define NETDATA_COMMON_H 1
+
+#include "../libnetdata/libnetdata.h"
+
+// ----------------------------------------------------------------------------
+// shortcuts for the default netdata configuration
+
+#define config_load(filename, overwrite_used) appconfig_load(&netdata_config, filename, overwrite_used)
+#define config_get(section, name, default_value) appconfig_get(&netdata_config, section, name, default_value)
+#define config_get_number(section, name, value) appconfig_get_number(&netdata_config, section, name, value)
+#define config_get_float(section, name, value) appconfig_get_float(&netdata_config, section, name, value)
+#define config_get_boolean(section, name, value) appconfig_get_boolean(&netdata_config, section, name, value)
+#define config_get_boolean_ondemand(section, name, value) appconfig_get_boolean_ondemand(&netdata_config, section, name, value)
+
+#define config_set(section, name, default_value) appconfig_set(&netdata_config, section, name, default_value)
+#define config_set_default(section, name, value) appconfig_set_default(&netdata_config, section, name, value)
+#define config_set_number(section, name, value) appconfig_set_number(&netdata_config, section, name, value)
+#define config_set_float(section, name, value) appconfig_set_float(&netdata_config, section, name, value)
+#define config_set_boolean(section, name, value) appconfig_set_boolean(&netdata_config, section, name, value)
+
+#define config_exists(section, name) appconfig_exists(&netdata_config, section, name)
+#define config_move(section_old, name_old, section_new, name_new) appconfig_move(&netdata_config, section_old, name_old, section_new, name_new)
+
+#define config_generate(buffer, only_changed) appconfig_generate(&netdata_config, buffer, only_changed)
+
+
+// ----------------------------------------------------------------------------
+// netdata include files
+
+#include "global_statistics.h"
+
+// the netdata database
+#include "database/rrd.h"
+
+// the netdata webserver(s)
+#include "web/server/web_server.h"
+
+// streaming metrics between netdata servers
+#include "streaming/rrdpush.h"
+
+// health monitoring and alarm notifications
+#include "health/health.h"
+
+// the netdata registry
+// the registry is actually an API feature
+#include "registry/registry.h"
+
+// backends for archiving the metrics
+#include "backends/backends.h"
+
+// the netdata API
+#include "web/api/web_api_v1.h"
+
+// all data collection plugins
+#include "collectors/all.h"
+
+// netdata unit tests
+#include "unit_test.h"
+
+// the netdata deamon
+#include "daemon.h"
+#include "main.h"
+#include "signals.h"
+
+// global netdata daemon variables
+extern char *netdata_configured_hostname;
+extern char *netdata_configured_user_config_dir;
+extern char *netdata_configured_stock_config_dir;
+extern char *netdata_configured_log_dir;
+extern char *netdata_configured_plugins_dir_base;
+extern char *netdata_configured_plugins_dir;
+extern char *netdata_configured_web_dir;
+extern char *netdata_configured_cache_dir;
+extern char *netdata_configured_varlib_dir;
+extern char *netdata_configured_home_dir;
+extern char *netdata_configured_host_prefix;
+extern char *netdata_configured_timezone;
+
+#endif /* NETDATA_COMMON_H */
diff --git a/src/daemon.c b/daemon/daemon.c
index 471c62c6e..4ad082b95 100644
--- a/src/daemon.c
+++ b/daemon/daemon.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "common.h"
 #include <sched.h>
 
@@ -151,6 +153,10 @@ static void oom_score_adj(void) {
     s = config_get(CONFIG_SECTION_GLOBAL, "OOM score", s);
     if(s && *s && (isdigit(*s) || *s == '-' || *s == '+'))
         wanted_score = atoll(s);
+    else if(s && !strcmp(s, "keep")) {
+        info("Out-Of-Memory (OOM) kept as-is (running with %d)", (int) old_score);
+        return;
+    }
     else {
         info("Out-Of-Memory (OOM) score not changed due to non-numeric setting: '%s' (running with %d)", s, (int)old_score);
         return;
@@ -202,8 +208,6 @@ static void process_nice_level(void) {
 #endif // HAVE_NICE
 };
 
-#ifdef HAVE_SCHED_SETSCHEDULER
-
 #define SCHED_FLAG_NONE                      0x00
 #define SCHED_FLAG_PRIORITY_CONFIGURABLE     0x01 // the priority is user configurable
 #define SCHED_FLAG_KEEP_AS_IS                0x04 // do not attempt to set policy, priority or nice()
@@ -227,8 +231,8 @@ struct sched_def {
 #endif
 
 #ifdef SCHED_OTHER
-        { "nice",  SCHED_OTHER, 0, SCHED_FLAG_USE_NICE },
         { "other", SCHED_OTHER, 0, SCHED_FLAG_USE_NICE },
+        { "nice",  SCHED_OTHER, 0, SCHED_FLAG_USE_NICE },
 #endif
 
 #ifdef SCHED_RR
@@ -251,6 +255,55 @@ struct sched_def {
         { NULL, 0, 0, 0 }
 };
 
+
+#ifdef HAVE_SCHED_GETSCHEDULER
+static void sched_getscheduler_report(void) {
+    int sched = sched_getscheduler(0);
+    if(sched == -1) {
+        error("Cannot get my current process scheduling policy.");
+        return;
+    }
+    else {
+        int i;
+        for(i = 0 ; scheduler_defaults[i].name ; i++) {
+            if(scheduler_defaults[i].policy == sched) {
+                if(scheduler_defaults[i].flags & SCHED_FLAG_PRIORITY_CONFIGURABLE) {
+                    struct sched_param param;
+                    if(sched_getparam(0, &param) == -1) {
+                        error("Cannot get the process scheduling priority for my policy '%s'", scheduler_defaults[i].name);
+                        return;
+                    }
+                    else {
+                        info("Running with process scheduling policy '%s', priority %d", scheduler_defaults[i].name, param.sched_priority);
+                    }
+                }
+                else if(scheduler_defaults[i].flags & SCHED_FLAG_USE_NICE) {
+                    #ifdef HAVE_GETPRIORITY
+                    int n = getpriority(PRIO_PROCESS, 0);
+                    info("Running with process scheduling policy '%s', nice level %d", scheduler_defaults[i].name, n);
+                    #else // !HAVE_GETPRIORITY
+                    info("Running with process scheduling policy '%s'", scheduler_defaults[i].name);
+                    #endif // !HAVE_GETPRIORITY
+                }
+                else {
+                    info("Running with process scheduling policy '%s'", scheduler_defaults[i].name);
+                }
+
+                return;
+            }
+        }
+    }
+}
+#else // !HAVE_SCHED_GETSCHEDULER
+static void sched_getscheduler_report(void) {
+#ifdef HAVE_GETPRIORITY
+    info("Running with priority %d", getpriority(PRIO_PROCESS, 0));
+#endif // HAVE_GETPRIORITY
+}
+#endif // !HAVE_SCHED_GETSCHEDULER
+
+#ifdef HAVE_SCHED_SETSCHEDULER
+
 static void sched_setscheduler_set(void) {
 
     if(scheduler_defaults[0].name) {
@@ -270,7 +323,7 @@ static void sched_setscheduler_set(void) {
                 flags = scheduler_defaults[i].flags;
 
                 if(flags & SCHED_FLAG_KEEP_AS_IS)
-                    return;
+                    goto report;
 
                 if(flags & SCHED_FLAG_PRIORITY_CONFIGURABLE)
                     priority = (int)config_get_number(CONFIG_SECTION_GLOBAL, "process scheduling priority", priority);
@@ -310,18 +363,21 @@ static void sched_setscheduler_set(void) {
         else {
             info("Adjusted netdata scheduling policy to %s (%d), with priority %d.", name, policy, priority);
             if(!(flags & SCHED_FLAG_USE_NICE))
-                return;
+                goto report;
         }
     }
 
 fallback:
     process_nice_level();
+
+report:
+    sched_getscheduler_report();
 }
-#else
+#else // !HAVE_SCHED_SETSCHEDULER
 static void sched_setscheduler_set(void) {
     process_nice_level();
 }
-#endif
+#endif // !HAVE_SCHED_SETSCHEDULER
 
 int become_daemon(int dont_fork, const char *user)
 {
diff --git a/src/daemon.h b/daemon/daemon.h
index 150d74e3a..412691107 100644
--- a/src/daemon.h
+++ b/daemon/daemon.h
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_DAEMON_H
 #define NETDATA_DAEMON_H 1
 
diff --git a/src/global_statistics.c b/daemon/global_statistics.c
index 4f34e92df..68933e195 100644
--- a/src/global_statistics.c
+++ b/daemon/global_statistics.c
@@ -1,6 +1,27 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "common.h"
 
-volatile struct global_statistics global_statistics = {
+#define GLOBAL_STATS_RESET_WEB_USEC_MAX 0x01
+
+
+static struct global_statistics {
+    volatile uint16_t connected_clients;
+
+    volatile uint64_t web_requests;
+    volatile uint64_t web_usec;
+    volatile uint64_t web_usec_max;
+    volatile uint64_t bytes_received;
+    volatile uint64_t bytes_sent;
+    volatile uint64_t content_size;
+    volatile uint64_t compressed_content_size;
+
+    volatile uint64_t web_client_count;
+
+    volatile uint64_t rrdr_queries_made;
+    volatile uint64_t rrdr_db_points_read;
+    volatile uint64_t rrdr_result_points_generated;
+} global_statistics = {
         .connected_clients = 0,
         .web_requests = 0,
         .web_usec = 0,
@@ -8,18 +29,45 @@ volatile struct global_statistics global_statistics = {
         .bytes_sent = 0,
         .content_size = 0,
         .compressed_content_size = 0,
-        .web_client_count = 1
+        .web_client_count = 1,
+
+        .rrdr_queries_made = 0,
+        .rrdr_db_points_read = 0,
+        .rrdr_result_points_generated = 0,
 };
 
+#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
+#else
 netdata_mutex_t global_statistics_mutex = NETDATA_MUTEX_INITIALIZER;
 
-inline void global_statistics_lock(void) {
+static inline void global_statistics_lock(void) {
     netdata_mutex_lock(&global_statistics_mutex);
 }
 
-inline void global_statistics_unlock(void) {
+static inline void global_statistics_unlock(void) {
     netdata_mutex_unlock(&global_statistics_mutex);
 }
+#endif
+
+
+void rrdr_query_completed(uint64_t db_points_read, uint64_t result_points_generated) {
+#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
+    __atomic_fetch_add(&global_statistics.rrdr_queries_made, 1, __ATOMIC_SEQ_CST);
+    __atomic_fetch_add(&global_statistics.rrdr_db_points_read, db_points_read, __ATOMIC_SEQ_CST);
+    __atomic_fetch_add(&global_statistics.rrdr_result_points_generated, result_points_generated, __ATOMIC_SEQ_CST);
+#else
+    #warning NOT using atomic operations - using locks for global statistics
+    if (web_server_is_multithreaded)
+        global_statistics_lock();
+
+    global_statistics.rrdr_queries_made++;
+    global_statistics.rrdr_db_points_read += db_points_read;
+    global_statistics.rrdr_result_points_generated += result_points_generated;
+
+    if (web_server_is_multithreaded)
+        global_statistics_unlock();
+#endif
+}
 
 void finished_web_request_statistics(uint64_t dt,
                                      uint64_t bytes_received,
@@ -90,17 +138,21 @@ void web_client_disconnected(void) {
 }
 
 
-inline void global_statistics_copy(struct global_statistics *gs, uint8_t options) {
+static inline void global_statistics_copy(struct global_statistics *gs, uint8_t options) {
 #if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
-    gs->connected_clients       = __atomic_fetch_add(&global_statistics.connected_clients, 0, __ATOMIC_SEQ_CST);
-    gs->web_requests            = __atomic_fetch_add(&global_statistics.web_requests, 0, __ATOMIC_SEQ_CST);
-    gs->web_usec                = __atomic_fetch_add(&global_statistics.web_usec, 0, __ATOMIC_SEQ_CST);
-    gs->web_usec_max            = __atomic_fetch_add(&global_statistics.web_usec_max, 0, __ATOMIC_SEQ_CST);
-    gs->bytes_received          = __atomic_fetch_add(&global_statistics.bytes_received, 0, __ATOMIC_SEQ_CST);
-    gs->bytes_sent              = __atomic_fetch_add(&global_statistics.bytes_sent, 0, __ATOMIC_SEQ_CST);
-    gs->content_size            = __atomic_fetch_add(&global_statistics.content_size, 0, __ATOMIC_SEQ_CST);
-    gs->compressed_content_size = __atomic_fetch_add(&global_statistics.compressed_content_size, 0, __ATOMIC_SEQ_CST);
-    gs->web_client_count        = __atomic_fetch_add(&global_statistics.web_client_count, 0, __ATOMIC_SEQ_CST);
+    gs->connected_clients            = __atomic_fetch_add(&global_statistics.connected_clients, 0, __ATOMIC_SEQ_CST);
+    gs->web_requests                 = __atomic_fetch_add(&global_statistics.web_requests, 0, __ATOMIC_SEQ_CST);
+    gs->web_usec                     = __atomic_fetch_add(&global_statistics.web_usec, 0, __ATOMIC_SEQ_CST);
+    gs->web_usec_max                 = __atomic_fetch_add(&global_statistics.web_usec_max, 0, __ATOMIC_SEQ_CST);
+    gs->bytes_received               = __atomic_fetch_add(&global_statistics.bytes_received, 0, __ATOMIC_SEQ_CST);
+    gs->bytes_sent                   = __atomic_fetch_add(&global_statistics.bytes_sent, 0, __ATOMIC_SEQ_CST);
+    gs->content_size                 = __atomic_fetch_add(&global_statistics.content_size, 0, __ATOMIC_SEQ_CST);
+    gs->compressed_content_size      = __atomic_fetch_add(&global_statistics.compressed_content_size, 0, __ATOMIC_SEQ_CST);
+    gs->web_client_count             = __atomic_fetch_add(&global_statistics.web_client_count, 0, __ATOMIC_SEQ_CST);
+
+    gs->rrdr_queries_made            = __atomic_fetch_add(&global_statistics.rrdr_queries_made, 0, __ATOMIC_SEQ_CST);
+    gs->rrdr_db_points_read          = __atomic_fetch_add(&global_statistics.rrdr_db_points_read, 0, __ATOMIC_SEQ_CST);
+    gs->rrdr_result_points_generated = __atomic_fetch_add(&global_statistics.rrdr_result_points_generated, 0, __ATOMIC_SEQ_CST);
 
     if(options & GLOBAL_STATS_RESET_WEB_USEC_MAX) {
         uint64_t n = 0;
@@ -411,4 +463,71 @@ void global_statistics_charts(void) {
 
         rrdset_done(st_compression);
     }
+
+    // ----------------------------------------------------------------
+
+    if(gs.rrdr_queries_made) {
+        static RRDSET *st_rrdr_queries = NULL;
+        static RRDDIM *rd_queries = NULL;
+
+        if (unlikely(!st_rrdr_queries)) {
+            st_rrdr_queries = rrdset_create_localhost(
+                    "netdata"
+                    , "queries"
+                    , NULL
+                    , "queries"
+                    , NULL
+                    , "NetData API Queries"
+                    , "queries/s"
+                    , "netdata"
+                    , "stats"
+                    , 130500
+                    , localhost->rrd_update_every
+                    , RRDSET_TYPE_LINE
+            );
+
+            rd_queries = rrddim_add(st_rrdr_queries, "queries", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+        else
+            rrdset_next(st_rrdr_queries);
+
+        rrddim_set_by_pointer(st_rrdr_queries, rd_queries, (collected_number)gs.rrdr_queries_made);
+
+        rrdset_done(st_rrdr_queries);
+    }
+
+    // ----------------------------------------------------------------
+
+    if(gs.rrdr_db_points_read || gs.rrdr_result_points_generated) {
+        static RRDSET *st_rrdr_points = NULL;
+        static RRDDIM *rd_points_read = NULL;
+        static RRDDIM *rd_points_generated = NULL;
+
+        if (unlikely(!st_rrdr_points)) {
+            st_rrdr_points = rrdset_create_localhost(
+                    "netdata"
+                    , "db_points"
+                    , NULL
+                    , "queries"
+                    , NULL
+                    , "NetData API Points"
+                    , "points/s"
+                    , "netdata"
+                    , "stats"
+                    , 130501
+                    , localhost->rrd_update_every
+                    , RRDSET_TYPE_AREA
+            );
+
+            rd_points_read = rrddim_add(st_rrdr_points, "read", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_points_generated = rrddim_add(st_rrdr_points, "generated", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+        else
+            rrdset_next(st_rrdr_points);
+
+        rrddim_set_by_pointer(st_rrdr_points, rd_points_read, (collected_number)gs.rrdr_db_points_read);
+        rrddim_set_by_pointer(st_rrdr_points, rd_points_generated, (collected_number)gs.rrdr_result_points_generated);
+
+        rrdset_done(st_rrdr_points);
+    }
 }
diff --git a/src/global_statistics.h b/daemon/global_statistics.h
index 62fee6e36..9dd7db51a 100644
--- a/src/global_statistics.h
+++ b/daemon/global_statistics.h
@@ -1,27 +1,15 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_GLOBAL_STATISTICS_H
 #define NETDATA_GLOBAL_STATISTICS_H 1
 
+#include "common.h"
+
 // ----------------------------------------------------------------------------
 // global statistics
 
-struct global_statistics {
-    volatile uint16_t connected_clients;
-
-    volatile uint64_t web_requests;
-    volatile uint64_t web_usec;
-    volatile uint64_t web_usec_max;
-    volatile uint64_t bytes_received;
-    volatile uint64_t bytes_sent;
-    volatile uint64_t content_size;
-    volatile uint64_t compressed_content_size;
+extern void rrdr_query_completed(uint64_t db_points_read, uint64_t result_points_generated);
 
-    volatile uint64_t web_client_count;
-};
-
-extern volatile struct global_statistics global_statistics;
-
-extern void global_statistics_lock(void);
-extern void global_statistics_unlock(void);
 extern void finished_web_request_statistics(uint64_t dt,
                                      uint64_t bytes_received,
                                      uint64_t bytes_sent,
@@ -30,9 +18,6 @@ extern void finished_web_request_statistics(uint64_t dt,
 
 extern uint64_t web_client_connected(void);
 extern void web_client_disconnected(void);
-
-#define GLOBAL_STATS_RESET_WEB_USEC_MAX 0x01
-extern void global_statistics_copy(struct global_statistics *gs, uint8_t options);
 extern void global_statistics_charts(void);
 
 #endif /* NETDATA_GLOBAL_STATISTICS_H */
diff --git a/src/main.c b/daemon/main.c
index 798c7f0fc..b2c4c80bf 100644
--- a/src/main.c
+++ b/daemon/main.c
@@ -1,6 +1,18 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "common.h"
 
-extern void *cgroups_main(void *ptr);
+struct config netdata_config = {
+        .sections = NULL,
+        .mutex = NETDATA_MUTEX_INITIALIZER,
+        .index = {
+                .avl_tree = {
+                        .root = NULL,
+                        .compar = appconfig_section_compare
+                },
+                .rwlock = AVL_LOCK_INITIALIZER
+        }
+};
 
 void netdata_cleanup_and_exit(int ret) {
     // enabling this, is wrong
@@ -39,43 +51,31 @@ void netdata_cleanup_and_exit(int ret) {
 
 struct netdata_static_thread static_threads[] = {
 
-#ifdef INTERNAL_PLUGIN_NFACCT
-    // nfacct requires root access
-    // so, we build it as an external plugin with setuid to root
-    {"PLUGIN[nfacct]",       CONFIG_SECTION_PLUGINS,  "nfacct",     1, NULL, NULL, nfacct_main},
-#endif
-
-#ifdef NETDATA_INTERNAL_CHECKS
-    // debugging plugin
-    {"PLUGIN[check]",        CONFIG_SECTION_PLUGINS,  "checks",     0, NULL, NULL, checks_main},
-#endif
+    NETDATA_PLUGIN_HOOK_CHECKS
+    NETDATA_PLUGIN_HOOK_FREEBSD
+    NETDATA_PLUGIN_HOOK_MACOS
 
-#if defined(__FreeBSD__)
-    // FreeBSD internal plugins
-    {"PLUGIN[freebsd]",      CONFIG_SECTION_PLUGINS,  "freebsd",    1, NULL, NULL, freebsd_main},
-#elif defined(__APPLE__)
-    // macOS internal plugins
-    {"PLUGIN[macos]",        CONFIG_SECTION_PLUGINS,  "macos",      1, NULL, NULL, macos_main},
-#else
     // linux internal plugins
-    {"PLUGIN[proc]",         CONFIG_SECTION_PLUGINS,  "proc",       1, NULL, NULL, proc_main},
-    {"PLUGIN[diskspace]",    CONFIG_SECTION_PLUGINS,  "diskspace",  1, NULL, NULL, proc_diskspace_main},
-    {"PLUGIN[cgroup]",       CONFIG_SECTION_PLUGINS,  "cgroups",    1, NULL, NULL, cgroups_main},
-    {"PLUGIN[tc]",           CONFIG_SECTION_PLUGINS,  "tc",         1, NULL, NULL, tc_main},
-#endif /* __FreeBSD__, __APPLE__*/
-
-    // common plugins for all systems
-    {"PLUGIN[idlejitter]",   CONFIG_SECTION_PLUGINS,  "idlejitter", 1, NULL, NULL, cpuidlejitter_main},
-    {"BACKENDS",            NULL,                    NULL,         1, NULL, NULL, backends_main},
-    {"HEALTH",              NULL,                    NULL,         1, NULL, NULL, health_main},
-    {"PLUGINSD",            NULL,                    NULL,         1, NULL, NULL, pluginsd_main},
-    {"WEB_SERVER[multi]",   NULL,                    NULL,         1, NULL, NULL, socket_listen_main_multi_threaded},
-    {"WEB_SERVER[single]",  NULL,                    NULL,         0, NULL, NULL, socket_listen_main_single_threaded},
-    {"WEB_SERVER[static1]", NULL,                    NULL,         0, NULL, NULL, socket_listen_main_static_threaded},
-    {"STREAM",              NULL,                    NULL,         0, NULL, NULL, rrdpush_sender_thread},
-    {"STATSD",              NULL,                    NULL,         1, NULL, NULL, statsd_main},
-
-    {NULL,                  NULL,                    NULL,         0, NULL, NULL, NULL}
+    NETDATA_PLUGIN_HOOK_LINUX_NFACCT
+    NETDATA_PLUGIN_HOOK_LINUX_PROC
+    NETDATA_PLUGIN_HOOK_LINUX_DISKSPACE
+    NETDATA_PLUGIN_HOOK_LINUX_CGROUPS
+    NETDATA_PLUGIN_HOOK_LINUX_TC
+
+    NETDATA_PLUGIN_HOOK_IDLEJITTER
+    NETDATA_PLUGIN_HOOK_STATSD
+
+        // common plugins for all systems
+    {"BACKENDS",             NULL,                    NULL,         1, NULL, NULL, backends_main},
+    {"WEB_SERVER[multi]",    NULL,                    NULL,         1, NULL, NULL, socket_listen_main_multi_threaded},
+    {"WEB_SERVER[single]",   NULL,                    NULL,         0, NULL, NULL, socket_listen_main_single_threaded},
+    {"WEB_SERVER[static1]",  NULL,                    NULL,         0, NULL, NULL, socket_listen_main_static_threaded},
+    {"STREAM",               NULL,                    NULL,         0, NULL, NULL, rrdpush_sender_thread},
+
+    NETDATA_PLUGIN_HOOK_PLUGINSD
+    NETDATA_PLUGIN_HOOK_HEALTH
+
+    {NULL,                   NULL,                    NULL,         0, NULL, NULL, NULL}
 };
 
 void web_server_threading_selection(void) {
@@ -101,6 +101,7 @@ void web_server_threading_selection(void) {
 void web_server_config_options(void) {
     web_client_timeout = (int) config_get_number(CONFIG_SECTION_WEB, "disconnect idle clients after seconds", web_client_timeout);
     web_client_first_request_timeout = (int) config_get_number(CONFIG_SECTION_WEB, "timeout for first request", web_client_first_request_timeout);
+    web_client_streaming_rate_t = config_get_number(CONFIG_SECTION_WEB, "accept a streaming request every seconds", web_client_streaming_rate_t);
 
     respect_web_browser_do_not_track_policy = config_get_boolean(CONFIG_SECTION_WEB, "respect do not track policy", respect_web_browser_do_not_track_policy);
     web_x_frame_options = config_get(CONFIG_SECTION_WEB, "x-frame-options response header", "");
@@ -145,7 +146,7 @@ void web_server_config_options(void) {
 }
 
 
-int killpid(pid_t pid, int sig)
+int killpid(pid_t pid, int signal)
 {
     int ret = -1;
     debug(D_EXIT, "Request to kill pid %d", pid);
@@ -168,7 +169,7 @@ int killpid(pid_t pid, int sig)
     }
     else {
         errno = 0;
-        ret = kill(pid, sig);
+        ret = kill(pid, signal);
         if(ret == -1) {
             switch(errno) {
                 case ESRCH:
@@ -192,7 +193,8 @@ int killpid(pid_t pid, int sig)
 void cancel_main_threads() {
     error_log_limit_unlimited();
 
-    int i, found = 0, max = 5 * USEC_PER_SEC, step = 100000;
+    int i, found = 0;
+    usec_t max = 5 * USEC_PER_SEC, step = 100000;
     for (i = 0; static_threads[i].name != NULL ; i++) {
         if(static_threads[i].enabled == NETDATA_MAIN_THREAD_RUNNING) {
             info("EXIT: Stopping master thread: %s", static_threads[i].name);
@@ -226,6 +228,7 @@ struct option_def option_definitions[] = {
     // opt description                                    arg name       default value
     { 'c', "Configuration file to load.",                 "filename",    CONFIG_DIR "/" CONFIG_FILENAME},
     { 'D', "Do not fork. Run in the foreground.",         NULL,          "run in the background"},
+    { 'd', "Fork. Run in the background.",                NULL,          "run in the background"},
     { 'h', "Display this help message.",                  NULL,          NULL},
     { 'P', "File to save a pid while running.",           "filename",    "do not save pid to a file"},
     { 'i', "The IP address to listen to.",                "IP",          "all IP addresses IPv4 and IPv6"},
@@ -271,16 +274,14 @@ int help(int exitcode) {
             " All rights reserved.\n"
             "\n"
             " Home Page  : https://my-netdata.io\n"
-            " Source Code: https://github.com/firehol/netdata\n"
-            " Wiki / Docs: https://github.com/firehol/netdata/wiki\n"
-            " Support    : https://github.com/firehol/netdata/issues\n"
-            " License    : https://github.com/firehol/netdata/blob/master/LICENSE.md\n"
+            " Source Code: https://github.com/netdata/netdata\n"
+            " Wiki / Docs: https://github.com/netdata/netdata/wiki\n"
+            " Support    : https://github.com/netdata/netdata/issues\n"
+            " License    : https://github.com/netdata/netdata/blob/master/LICENSE.md\n"
             "\n"
             " Twitter    : https://twitter.com/linuxnetdata\n"
             " Facebook   : https://www.facebook.com/linuxnetdata/\n"
             "\n"
-            " netdata is a https://firehol.org project.\n"
-            "\n"
             "\n"
     );
 
@@ -322,7 +323,8 @@ int help(int exitcode) {
 
 // TODO: Remove this function with the nix major release.
 void remove_option(int opt_index, int *argc, char **argv) {
-    int i = opt_index;
+    int i;
+
     // remove the options.
     do {
         *argc = *argc - 1;
@@ -356,9 +358,9 @@ void log_init(void) {
     snprintfz(filename, FILENAME_MAX, "%s/access.log", netdata_configured_log_dir);
     stdaccess_filename = config_get(CONFIG_SECTION_GLOBAL, "access log", filename);
 
-    error_log_throttle_period_backup =
     error_log_throttle_period = config_get_number(CONFIG_SECTION_GLOBAL, "errors flood protection period", error_log_throttle_period);
     error_log_errors_per_period = (unsigned long)config_get_number(CONFIG_SECTION_GLOBAL, "errors to trigger flood protection", (long long int)error_log_errors_per_period);
+    error_log_errors_per_period_backup = error_log_errors_per_period;
 
     setenv("NETDATA_ERRORS_THROTTLE_PERIOD", config_get(CONFIG_SECTION_GLOBAL, "errors flood protection period"    , ""), 1);
     setenv("NETDATA_ERRORS_PER_PERIOD",      config_get(CONFIG_SECTION_GLOBAL, "errors to trigger flood protection", ""), 1);
@@ -457,12 +459,13 @@ static void get_netdata_configured_variables() {
     // ------------------------------------------------------------------------
     // get system paths
 
-    netdata_configured_config_dir  = config_get(CONFIG_SECTION_GLOBAL, "config directory",    CONFIG_DIR);
-    netdata_configured_log_dir     = config_get(CONFIG_SECTION_GLOBAL, "log directory",       LOG_DIR);
-    netdata_configured_web_dir     = config_get(CONFIG_SECTION_GLOBAL, "web files directory", WEB_DIR);
-    netdata_configured_cache_dir   = config_get(CONFIG_SECTION_GLOBAL, "cache directory",     CACHE_DIR);
-    netdata_configured_varlib_dir  = config_get(CONFIG_SECTION_GLOBAL, "lib directory",       VARLIB_DIR);
-    netdata_configured_home_dir    = config_get(CONFIG_SECTION_GLOBAL, "home directory",      CACHE_DIR);
+    netdata_configured_user_config_dir  = config_get(CONFIG_SECTION_GLOBAL, "config directory",       netdata_configured_user_config_dir);
+    netdata_configured_stock_config_dir = config_get(CONFIG_SECTION_GLOBAL, "stock config directory", netdata_configured_stock_config_dir);
+    netdata_configured_log_dir          = config_get(CONFIG_SECTION_GLOBAL, "log directory",          netdata_configured_log_dir);
+    netdata_configured_web_dir          = config_get(CONFIG_SECTION_GLOBAL, "web files directory",    netdata_configured_web_dir);
+    netdata_configured_cache_dir        = config_get(CONFIG_SECTION_GLOBAL, "cache directory",        netdata_configured_cache_dir);
+    netdata_configured_varlib_dir       = config_get(CONFIG_SECTION_GLOBAL, "lib directory",          netdata_configured_varlib_dir);
+    netdata_configured_home_dir         = config_get(CONFIG_SECTION_GLOBAL, "home directory",         netdata_configured_home_dir);
 
     {
         char plugins_dirs[(FILENAME_MAX * 2) + 1];
@@ -480,6 +483,7 @@ static void get_netdata_configured_variables() {
     // ------------------------------------------------------------------------
 
     netdata_configured_host_prefix = config_get(CONFIG_SECTION_GLOBAL, "host access prefix", "");
+    verify_netdata_host_prefix();
 
     // --------------------------------------------------------------------
     // get KSM settings
@@ -592,15 +596,17 @@ void set_global_environment() {
         setenv("NETDATA_UPDATE_EVERY", b, 1);
     }
 
-    setenv("NETDATA_HOSTNAME"   , netdata_configured_hostname, 1);
-    setenv("NETDATA_CONFIG_DIR" , verify_required_directory(netdata_configured_config_dir),  1);
-    setenv("NETDATA_PLUGINS_DIR", verify_required_directory(netdata_configured_plugins_dir), 1);
-    setenv("NETDATA_WEB_DIR"    , verify_required_directory(netdata_configured_web_dir),     1);
-    setenv("NETDATA_CACHE_DIR"  , verify_required_directory(netdata_configured_cache_dir),   1);
-    setenv("NETDATA_LIB_DIR"    , verify_required_directory(netdata_configured_varlib_dir),  1);
-    setenv("NETDATA_LOG_DIR"    , verify_required_directory(netdata_configured_log_dir),     1);
-    setenv("HOME"               , verify_required_directory(netdata_configured_home_dir),    1);
-    setenv("NETDATA_HOST_PREFIX", netdata_configured_host_prefix, 1);
+    setenv("NETDATA_HOSTNAME"         , netdata_configured_hostname, 1);
+    setenv("NETDATA_CONFIG_DIR"       , verify_required_directory(netdata_configured_user_config_dir),  1);
+    setenv("NETDATA_USER_CONFIG_DIR"  , verify_required_directory(netdata_configured_user_config_dir),  1);
+    setenv("NETDATA_STOCK_CONFIG_DIR" , verify_required_directory(netdata_configured_stock_config_dir), 1);
+    setenv("NETDATA_PLUGINS_DIR"      , verify_required_directory(netdata_configured_plugins_dir),      1);
+    setenv("NETDATA_WEB_DIR"          , verify_required_directory(netdata_configured_web_dir),          1);
+    setenv("NETDATA_CACHE_DIR"        , verify_required_directory(netdata_configured_cache_dir),        1);
+    setenv("NETDATA_LIB_DIR"          , verify_required_directory(netdata_configured_varlib_dir),       1);
+    setenv("NETDATA_LOG_DIR"          , verify_required_directory(netdata_configured_log_dir),          1);
+    setenv("HOME"                     , verify_required_directory(netdata_configured_home_dir),         1);
+    setenv("NETDATA_HOST_PREFIX"      , netdata_configured_host_prefix, 1);
 
     get_system_timezone();
 
@@ -622,6 +628,36 @@ void set_global_environment() {
     setenv("LC_ALL", "C", 1);
 }
 
+static int load_netdata_conf(char *filename, char overwrite_used) {
+    errno = 0;
+
+    int ret = 0;
+
+    if(filename && *filename) {
+        ret = config_load(filename, overwrite_used);
+        if(!ret)
+            error("CONFIG: cannot load config file '%s'.", filename);
+    }
+    else {
+        filename = strdupz_path_subpath(netdata_configured_user_config_dir, "netdata.conf");
+
+        ret = config_load(filename, overwrite_used);
+        if(!ret) {
+            info("CONFIG: cannot load user config '%s'. Will try the stock version.", filename);
+            freez(filename);
+
+            filename = strdupz_path_subpath(netdata_configured_stock_config_dir, "netdata.conf");
+            ret = config_load(filename, overwrite_used);
+            if(!ret)
+                info("CONFIG: cannot load stock config '%s'. Running with internal defaults.", filename);
+        }
+
+        freez(filename);
+    }
+
+    return ret;
+}
+
 int main(int argc, char **argv) {
     int i;
     int config_loaded = 0;
@@ -682,7 +718,7 @@ int main(int argc, char **argv) {
         while( (opt = getopt(argc, argv, optstring)) != -1 ) {
             switch(opt) {
                 case 'c':
-                    if(config_load(optarg, 1) != 1) {
+                    if(load_netdata_conf(optarg, 1) != 1) {
                         error("Cannot load configuration file %s.", optarg);
                         return 1;
                     }
@@ -694,6 +730,9 @@ int main(int argc, char **argv) {
                 case 'D':
                     dont_fork = 1;
                     break;
+                case 'd':
+                    dont_fork = 0;
+                    break;
                 case 'h':
                     return help(0);
                 case 'i':
@@ -727,9 +766,6 @@ int main(int argc, char **argv) {
                         if(strcmp(optarg, "unittest") == 0) {
                             if(unit_test_buffer()) return 1;
                             if(unit_test_str2ld()) return 1;
-                            //default_rrd_update_every = 1;
-                            //default_rrd_memory_mode = RRD_MEMORY_MODE_RAM;
-                            //if(!config_loaded) config_load(NULL, 0);
                             get_netdata_configured_variables();
                             default_rrd_update_every = 1;
                             default_rrd_memory_mode = RRD_MEMORY_MODE_RAM;
@@ -837,7 +873,7 @@ int main(int argc, char **argv) {
 
                             if(!config_loaded) {
                                 fprintf(stderr, "warning: no configuration file has been loaded. Use -c CONFIG_FILE, before -W get. Using default config.\n");
-                                config_load(NULL, 0);
+                                load_netdata_conf(NULL, 0);
                             }
 
                             backwards_compatible_config();
@@ -875,7 +911,7 @@ int main(int argc, char **argv) {
 #endif
 
     if(!config_loaded)
-        config_load(NULL, 0);
+        load_netdata_conf(NULL, 0);
 
     // ------------------------------------------------------------------------
     // initialize netdata
@@ -898,8 +934,8 @@ int main(int argc, char **argv) {
         // work while we are cd into config_dir
         // to allow the plugins refer to their config
         // files using relative filenames
-        if(chdir(netdata_configured_config_dir) == -1)
-            fatal("Cannot cd to '%s'", netdata_configured_config_dir);
+        if(chdir(netdata_configured_user_config_dir) == -1)
+            fatal("Cannot cd to '%s'", netdata_configured_user_config_dir);
     }
 
     char *user = NULL;
@@ -933,15 +969,6 @@ int main(int argc, char **argv) {
 
 
         // --------------------------------------------------------------------
-        // load stream.conf
-        {
-            char filename[FILENAME_MAX + 1];
-            snprintfz(filename, FILENAME_MAX, "%s/stream.conf", netdata_configured_config_dir);
-            appconfig_load(&stream_config, filename, 0);
-        }
-
-
-        // --------------------------------------------------------------------
         // setup process signals
 
         // block signals while initializing threads.
@@ -1009,7 +1036,7 @@ int main(int argc, char **argv) {
     if(getrlimit(RLIMIT_NOFILE, &rlimit_nofile) != 0)
         error("getrlimit(RLIMIT_NOFILE) failed");
     else
-        info("resources control: allowed file descriptors: soft = %zu, max = %zu", rlimit_nofile.rlim_cur, rlimit_nofile.rlim_max);
+        info("resources control: allowed file descriptors: soft = %zu, max = %zu", (size_t)rlimit_nofile.rlim_cur, (size_t)rlimit_nofile.rlim_max);
 
     // fork, switch user, create pid file, set process priority
     if(become_daemon(dont_fork, user) == -1)
diff --git a/src/main.h b/daemon/main.h
index d29bf74e7..cb0bde6a9 100644
--- a/src/main.h
+++ b/daemon/main.h
@@ -1,6 +1,12 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_MAIN_H
 #define NETDATA_MAIN_H 1
 
+#include "common.h"
+
+extern struct config netdata_config;
+
 #define NETDATA_MAIN_THREAD_RUNNING   CONFIG_BOOLEAN_YES
 #define NETDATA_MAIN_THREAD_EXITING  (CONFIG_BOOLEAN_YES + 1)
 #define NETDATA_MAIN_THREAD_EXITED    CONFIG_BOOLEAN_NO
@@ -21,17 +27,17 @@ struct option_def {
 };
 
 struct netdata_static_thread {
-    char *name;
+    char *name;                         // the name of the thread as it should appear in the logs
 
-    char *config_section;
-    char *config_name;
+    char *config_section;               // the section of netdata.conf to check if this is enabled or not
+    char *config_name;                  // the name of the config option to check if it is true or false
 
-    volatile sig_atomic_t enabled;
+    volatile sig_atomic_t enabled;      // the current status of the thread
 
-    netdata_thread_t *thread;
+    netdata_thread_t *thread;           // internal use, to maintain a pointer to the created thread
 
-    void (*init_routine) (void);
-    void *(*start_routine) (void *);
+    void (*init_routine) (void);        // an initialization function to run before spawning the thread
+    void *(*start_routine) (void *);    // the threaded worker
 };
 
 extern void cancel_main_threads(void);
diff --git a/src/signals.c b/daemon/signals.c
index 331e80358..71f271887 100644
--- a/src/signals.c
+++ b/daemon/signals.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "common.h"
 
 typedef enum signal_action {
@@ -147,6 +149,7 @@ void signals_handle(void) {
                                 break;
 
                             case NETDATA_SIGNAL_EXIT_CLEANLY:
+                                error_log_limit_unlimited();
                                 info("SIGNAL: Received %s. Cleaning up to exit...", name);
                                 netdata_cleanup_and_exit(0);
                                 exit(0);
diff --git a/src/signals.h b/daemon/signals.h
index 2fdd36552..e7e64365d 100644
--- a/src/signals.h
+++ b/daemon/signals.h
@@ -1,5 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_SIGNALS_H
-#define NETDATA_SIGNALS_H
+#define NETDATA_SIGNALS_H 1
 
 extern void signals_init(void);
 extern void signals_block(void);
diff --git a/src/unit_test.c b/daemon/unit_test.c
index e3eb146ad..9978647b4 100644
--- a/src/unit_test.c
+++ b/daemon/unit_test.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "common.h"
 
 static int check_number_printing(void) {
@@ -1197,8 +1199,50 @@ static int test_variable_renames(void) {
     return 1;
 }
 
+int check_strdupz_path_subpath() {
+
+    struct strdupz_path_subpath_checks {
+        const char *path;
+        const char *subpath;
+        const char *result;
+    } checks[] = {
+            { "",                "",            "."                     },
+            { "/",               "",            "/"                     },
+            { "/etc/netdata",    "",            "/etc/netdata"          },
+            { "/etc/netdata///", "",            "/etc/netdata"          },
+            { "/etc/netdata///", "health.d",    "/etc/netdata/health.d" },
+            { "/etc/netdata///", "///health.d", "/etc/netdata/health.d" },
+            { "/etc/netdata",    "///health.d", "/etc/netdata/health.d" },
+            { "",                "///health.d", "./health.d"            },
+            { "/",               "///health.d", "/health.d"             },
+
+            // terminator
+            { NULL, NULL, NULL }
+    };
+
+    size_t i;
+    for(i = 0; checks[i].result ; i++) {
+        char *s = strdupz_path_subpath(checks[i].path, checks[i].subpath);
+        fprintf(stderr, "strdupz_path_subpath(\"%s\", \"%s\") = \"%s\": ", checks[i].path, checks[i].subpath, s);
+        if(!s || strcmp(s, checks[i].result) != 0) {
+            freez(s);
+            fprintf(stderr, "FAILED\n");
+            return 1;
+        }
+        else {
+            freez(s);
+            fprintf(stderr, "OK\n");
+        }
+    }
+
+    return 0;
+}
+
 int run_all_mockup_tests(void)
 {
+    if(check_strdupz_path_subpath())
+        return 1;
+
     if(check_number_printing())
         return 1;
 
diff --git a/src/unit_test.h b/daemon/unit_test.h
index 68ed61fcb..0023c8de9 100644
--- a/src/unit_test.h
+++ b/daemon/unit_test.h
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_UNIT_TEST_H
 #define NETDATA_UNIT_TEST_H 1
 
diff --git a/database/Makefile.am b/database/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/database/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/database/Makefile.in b/database/Makefile.in
new file mode 100644
index 000000000..4f5b710c5
--- /dev/null
+++ b/database/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+VPATH = @srcdir@
+am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
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diff --git a/database/README.md b/database/README.md
new file mode 100644
index 000000000..8f5e3a6df
--- /dev/null
+++ b/database/README.md
@@ -0,0 +1,206 @@
+# netdata database
+
+Although `netdata` does all its calculations using `long double`, it stores all values using
+a [custom-made 32-bit number](../libnetdata/storage_number/).
+
+So, for each dimension of a chart, netdata will need: `4 bytes for the value * the entries
+of its history`. It will not store any other data for each value in the time series database.
+Since all its values are stored in a time series with fixed step, the time each value
+corresponds can be calculated at run time, using the position of a value in the round robin database.
+
+The default history is 3.600 entries, thus it will need 14.4KB for each chart dimension.
+If you need 1.000 dimensions, they will occupy just 14.4MB.
+
+Of course, 3.600 entries is a very short history, especially if data collection frequency is set
+to 1 second. You will have just one hour of data.
+
+For a day of data and 1.000 dimensions, you will need: 86.400 seconds * 4 bytes * 1.000
+dimensions = 345MB of RAM.
+
+Currently the only option you have to lower this number is to use
+**[Memory Deduplication - Kernel Same Page Merging - KSM](#ksm)**.
+
+## Memory modes
+
+Currently netdata supports 5 memory modes:
+
+1. `ram`, data are purely in memory. Data are never saved on disk. This mode uses `mmap()` and
+   supports [KSM](#ksm).
+   
+2. `save`, (the default) data are only in RAM while netdata runs and are saved to / loaded from
+   disk on netdata restart. It also uses `mmap()` and supports [KSM](#ksm).
+   
+3. `map`, data are in memory mapped files. This works like the swap. Keep in mind though, this
+   will have a constant write on your disk. When netdata writes data on its memory, the Linux kernel
+   marks the related memory pages as dirty and automatically starts updating them on disk.
+   Unfortunately we cannot control how frequently this works. The Linux kernel uses exactly the
+   same algorithm it uses for its swap memory. Check below for additional information on running a
+   dedicated central netdata server. This mode uses `mmap()` but does not support [KSM](#ksm).
+   
+4. `none`, without a database (collected metrics can only be streamed to another netdata).
+
+5. `alloc`, like `ram` but it uses `calloc()` and does not support [KSM](#ksm). This mode is the
+   fallback for all others except `none`.
+
+You can select the memory mode by editing netdata.conf and setting:
+
+```
+[global]
+    # ram, save (the default, save on exit, load on start), map (swap like)
+    memory mode = save
+
+    # the directory where data are saved
+    cache directory = /var/cache/netdata
+```
+
+## Running netdata in embedded devices
+
+Embedded devices usually have very limited RAM resources available.
+
+There are 2 settings for you to tweak:
+
+1. `update every`, which controls the data collection frequency
+2. `history`, which controls the size of the database in RAM
+
+By default `update every = 1` and `history = 3600`. This gives you an hour of data with per
+second updates.
+
+If you set `update every = 2` and `history = 1800`, you will still have an hour of data, but
+collected once every 2 seconds. This will **cut in half** both CPU and RAM resources consumed
+by netdata. Of course experiment a bit. On very weak devices you might have to use
+`update every = 5` and `history = 720` (still 1 hour of data, but 1/5 of the CPU and RAM resources).
+
+You can also disable [data collection plugins](../collectors) you don't need.
+Disabling such plugins will also free both CPU and RAM resources.
+
+## running a dedicated central netdata server
+
+netdata allows streaming data between netdata nodes. This allows us to have a central netdata
+server that will maintain the entire database for all nodes, and will also run health checks/alarms
+for all nodes.
+
+For this central netdata, memory size can be a problem. Fortunately, netdata supports several
+memory modes. What is interesting for this setup is `memory mode = map`.
+
+In this mode, the database of netdata is stored in memory mapped files. netdata continues to read
+and write the database in memory, but the kernel automatically loads and saves memory pages from/to
+disk.
+
+**We suggest _not_ to use this mode on nodes that run other applications.** There will always be
+dirty memory to be synced and this syncing process may influence the way other applications work.
+This mode however is ideal when we need a central netdata server that would normally need huge
+amounts of memory. Using memory mode `map` we can overcome all memory restrictions.
+
+There are a few kernel options that provide finer control on the way this syncing works. But before
+explaining them, a brief introduction of how netdata database works is needed.
+
+For each chart, netdata maps the following files:
+
+1. `chart/main.db`, this is the file that maintains chart information. Every time data are collected
+   for a chart, this is updated.
+   
+2. `chart/dimension_name.db`, this is the file for each dimension. At its beginning there is a
+   header, followed by the round robin database where metrics are stored.
+
+So, every time netdata collects data, the following pages will become dirty:
+
+1. the chart file
+2. the header part of all dimension files
+3. if the collected metrics are stored far enough in the dimension file, another page will
+   become dirty, for each dimension
+
+Each page in Linux is 4KB. So, with 200 charts and 1000 dimensions, there will be 1200 to 2200 4KB
+pages dirty pages every second. Of course 1200 of them will always be dirty (the chart header and
+the dimensions headers) and 1000 will be dirty for about 1000 seconds (4 bytes per metric, 4KB per
+page, so 1000 seconds, or 16 minutes per page).
+
+Hopefully, the Linux kernel does not sync all these data every second. The frequency they are
+synced is controlled by `/proc/sys/vm/dirty_expire_centisecs` or the
+`sysctl` `vm.dirty_expire_centisecs`. The default on most systems is 3000 (30 seconds).
+
+On a busy server centralizing metrics from 20+ servers you will experience this:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/23834750/429ab0dc-0764-11e7-821a-d7908bc881ac.png)
+
+As you can see, there is quite some stress (this is `iowait`) every 30 seconds.
+
+A simple solution is to increase this time to 10 minutes (60000). This is the same system
+with this setting in 10 minutes:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/23834784/d2304f72-0764-11e7-8389-fb830ffd973a.png)
+
+Of course, setting this to 10 minutes means that data on disk might be up to 10 minutes old if you
+get an abnormal shutdown.
+
+There are 2 more options to tweak:
+
+1. `dirty_background_ratio`, by default `10`.
+2. `dirty_ratio`, by default `20`.
+
+These control the amount of memory that should be dirty for disk syncing to be triggered.
+On dedicated netdata servers, you can use: `80` and `90` respectively, so that all RAM is given
+to netdata.
+
+With these settings, you can expect a little `iowait` spike once every 10 minutes and in case
+of system crash, data on disk will be up to 10 minutes old.
+
+![image](https://cloud.githubusercontent.com/assets/2662304/23835030/ba4bf506-0768-11e7-9bc6-3b23e080c69f.png)
+
+To have these settings automatically applied on boot, create the file `/etc/sysctl.d/netdata-memory.conf` with these contents:
+
+```
+vm.dirty_expire_centisecs = 60000
+vm.dirty_background_ratio = 80
+vm.dirty_ratio = 90
+vm.dirty_writeback_centisecs = 0
+```
+
+## KSM
+
+Netdata offers all its round robin database to kernel for deduplication.
+
+In the past KSM has been criticized for consuming a lot of CPU resources.
+Although this is true when KSM is used for deduplicating certain applications, it is not true with
+netdata, since the netdata memory is written very infrequently (if you have 24 hours of metrics in
+netdata, each byte at the in-memory database will be updated just once per day).
+
+KSM is a solution that will provide 60+% memory savings to netdata.
+
+#### Enable KSM in kernel
+
+You need to run a kernel compiled with:
+
+```sh
+CONFIG_KSM=y
+```
+
+When KSM is enabled at the kernel is just available for the user to enable it.
+
+So, if you build a kernel with `CONFIG_KSM=y` you will just get a few files in `/sys/kernel/mm/ksm`. Nothing else happens. There is no performance penalty (apart I guess from the memory this code occupies into the kernel).
+
+The files that `CONFIG_KSM=y` offers include:
+
+- `/sys/kernel/mm/ksm/run` by default `0`. You have to set this to `1` for the kernel to spawn `ksmd`.
+- `/sys/kernel/mm/ksm/sleep_millisecs`, by default `20`. The frequency ksmd should evaluate memory for deduplication.
+- `/sys/kernel/mm/ksm/pages_to_scan`, by default `100`. The amount of pages ksmd will evaluate on each run.
+
+So, by default `ksmd` is just disabled. It will not harm performance and the user/admin can control the CPU resources he/she is willing `ksmd` to use.
+
+#### Run `ksmd` kernel daemon
+
+To activate / run `ksmd` you need to run:
+
+```sh
+echo 1 >/sys/kernel/mm/ksm/run
+echo 1000 >/sys/kernel/mm/ksm/sleep_millisecs
+```
+
+With these settings ksmd does not even appear in the running process list (it will run once per second and evaluate 100 pages for de-duplication).
+
+Put the above lines in your boot sequence (`/etc/rc.local` or equivalent) to have `ksmd` run at boot.
+
+## Monitoring Kernel Memory de-duplication performance
+
+Netdata will create charts for kernel memory de-duplication performance, like this:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/11998786/eb23ae54-aab6-11e5-94d4-e848e8a5c56a.png)
diff --git a/src/rrd.c b/database/rrd.c
index 3be2d8e41..119efa62e 100644
--- a/src/rrd.c
+++ b/database/rrd.c
@@ -1,5 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
 #define NETDATA_RRD_INTERNALS 1
-#include "common.h"
+
+#include "rrd.h"
 
 // ----------------------------------------------------------------------------
 // globals
diff --git a/src/rrd.h b/database/rrd.h
index d17daacd2..19eb100cd 100644
--- a/src/rrd.h
+++ b/database/rrd.h
@@ -1,6 +1,27 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_RRD_H
 #define NETDATA_RRD_H 1
 
+// forward typedefs
+typedef struct rrdhost RRDHOST;
+typedef struct rrddim RRDDIM;
+typedef struct rrdset RRDSET;
+typedef struct rrdvar RRDVAR;
+typedef struct rrdsetvar RRDSETVAR;
+typedef struct rrddimvar RRDDIMVAR;
+typedef struct rrdcalc RRDCALC;
+typedef struct rrdcalctemplate RRDCALCTEMPLATE;
+typedef struct alarm_entry ALARM_ENTRY;
+
+#include "../daemon/common.h"
+#include "web/api/queries/query.h"
+#include "rrdvar.h"
+#include "rrdsetvar.h"
+#include "rrddimvar.h"
+#include "rrdcalc.h"
+#include "rrdcalctemplate.h"
+
 #define UPDATE_EVERY 1
 #define UPDATE_EVERY_MAX 3600
 
@@ -19,8 +40,6 @@ extern int gap_when_lost_iterations_above;
 typedef long long total_number;
 #define TOTAL_NUMBER_FORMAT "%lld"
 
-typedef struct rrdhost RRDHOST;
-
 // ----------------------------------------------------------------------------
 // chart types
 
@@ -103,8 +122,8 @@ typedef struct rrdfamily RRDFAMILY;
 
 typedef enum rrddim_flags {
     RRDDIM_FLAG_NONE                            = 0,
-    RRDDIM_FLAG_HIDDEN                          = 1 << 0,  // this dimension will not be offered to callers
-    RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS = 1 << 1   // do not offer RESET or OVERFLOW info to callers
+    RRDDIM_FLAG_HIDDEN                          = (1 << 0),  // this dimension will not be offered to callers
+    RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS = (1 << 1)   // do not offer RESET or OVERFLOW info to callers
 } RRDDIM_FLAGS;
 
 #ifdef HAVE_C___ATOMIC
@@ -159,8 +178,8 @@ struct rrddim {
     size_t collections_counter;                     // the number of times we added values to this rrdim
     size_t unused[10];
 
-    int updated:1;                                  // 1 when the dimension has been updated since the last processing
-    int exposed:1;                                  // 1 when set what have sent this dimension to the central netdata
+    unsigned int updated:1;                         // 1 when the dimension has been updated since the last processing
+    unsigned int exposed:1;                         // 1 when set what have sent this dimension to the central netdata
 
     struct timeval last_collected_time;             // when was this dimension last updated
                                                     // this is actual date time we updated the last_collected_value
@@ -202,7 +221,6 @@ struct rrddim {
 
     storage_number values[];                        // the array of values - THIS HAS TO BE THE LAST MEMBER
 };
-typedef struct rrddim RRDDIM;
 
 // ----------------------------------------------------------------------------
 // these loop macros make sure the linked list is accessed with the right lock
@@ -222,18 +240,21 @@ typedef struct rrddim RRDDIM;
 // and may lead to missing information.
 
 typedef enum rrdset_flags {
-    RRDSET_FLAG_ENABLED          = 1 << 0, // enables or disables a chart
-    RRDSET_FLAG_DETAIL           = 1 << 1, // if set, the data set should be considered as a detail of another
+    RRDSET_FLAG_ENABLED           = 1 << 0, // enables or disables a chart
+    RRDSET_FLAG_DETAIL            = 1 << 1, // if set, the data set should be considered as a detail of another
                                          // (the master data set should be the one that has the same family and is not detail)
-    RRDSET_FLAG_DEBUG            = 1 << 2, // enables or disables debugging for a chart
-    RRDSET_FLAG_OBSOLETE         = 1 << 3, // this is marked by the collector/module as obsolete
-    RRDSET_FLAG_BACKEND_SEND     = 1 << 4, // if set, this chart should be sent to backends
-    RRDSET_FLAG_BACKEND_IGNORE   = 1 << 5, // if set, this chart should not be sent to backends
-    RRDSET_FLAG_EXPOSED_UPSTREAM = 1 << 6, // if set, we have sent this chart to netdata master (streaming)
-    RRDSET_FLAG_STORE_FIRST      = 1 << 7, // if set, do not eliminate the first collection during interpolation
-    RRDSET_FLAG_HETEROGENEOUS    = 1 << 8, // if set, the chart is not homogeneous (dimensions in it have multiple algorithms, multipliers or dividers)
-    RRDSET_FLAG_HOMEGENEOUS_CHECK= 1 << 9, // if set, the chart should be checked to determine if the dimensions as homogeneous
-    RRDSET_FLAG_HIDDEN           = 1 << 10, // if set, do not show this chart on the dashboard, but use it for backends
+    RRDSET_FLAG_DEBUG             = 1 << 2, // enables or disables debugging for a chart
+    RRDSET_FLAG_OBSOLETE          = 1 << 3, // this is marked by the collector/module as obsolete
+    RRDSET_FLAG_BACKEND_SEND      = 1 << 4, // if set, this chart should be sent to backends
+    RRDSET_FLAG_BACKEND_IGNORE    = 1 << 5, // if set, this chart should not be sent to backends
+    RRDSET_FLAG_UPSTREAM_SEND     = 1 << 6, // if set, this chart should be sent upstream (streaming)
+    RRDSET_FLAG_UPSTREAM_IGNORE   = 1 << 7, // if set, this chart should not be sent upstream (streaming)
+    RRDSET_FLAG_UPSTREAM_EXPOSED  = 1 << 8, // if set, we have sent this chart definition to netdata master (streaming)
+    RRDSET_FLAG_STORE_FIRST       = 1 << 9, // if set, do not eliminate the first collection during interpolation
+    RRDSET_FLAG_HETEROGENEOUS     = 1 << 10, // if set, the chart is not homogeneous (dimensions in it have multiple algorithms, multipliers or dividers)
+    RRDSET_FLAG_HOMEGENEOUS_CHECK = 1 << 11, // if set, the chart should be checked to determine if the dimensions as homogeneous
+    RRDSET_FLAG_HIDDEN            = 1 << 12, // if set, do not show this chart on the dashboard, but use it for backends
+    RRDSET_FLAG_SYNC_CLOCK        = 1 << 13, // if set, microseconds on next data collection will be ignored (the chart will be synced to now)
 } RRDSET_FLAGS;
 
 #ifdef HAVE_C___ATOMIC
@@ -245,6 +266,7 @@ typedef enum rrdset_flags {
 #define rrdset_flag_set(st, flag)   (st)->flags |= (flag)
 #define rrdset_flag_clear(st, flag) (st)->flags &= ~(flag)
 #endif
+#define rrdset_flag_check_noatomic(st, flag) ((st)->flags & (flag))
 
 struct rrdset {
     // ------------------------------------------------------------------------
@@ -282,7 +304,7 @@ struct rrdset {
     long current_entry;                             // the entry that is currently being updated
                                                     // it goes around in a round-robin fashion
 
-    uint32_t flags;                                 // configuration flags
+    RRDSET_FLAGS flags;                             // configuration flags
 
     int gap_when_lost_iterations_above;             // after how many lost iterations a gap should be stored
                                                     // netdata will interpolate values for gaps lower than this
@@ -353,7 +375,6 @@ struct rrdset {
     RRDDIM *dimensions;                             // the actual data for every dimension
 
 };
-typedef struct rrdset RRDSET;
 
 #define rrdset_rdlock(st) netdata_rwlock_rdlock(&((st)->rrdset_rwlock))
 #define rrdset_wrlock(st) netdata_rwlock_wrlock(&((st)->rrdset_rwlock))
@@ -401,6 +422,65 @@ typedef enum rrdhost_flags {
 #define rrdset_debug(st, fmt, args...) debug_dummy()
 #endif
 
+// ----------------------------------------------------------------------------
+// Health data
+
+struct alarm_entry {
+    uint32_t unique_id;
+    uint32_t alarm_id;
+    uint32_t alarm_event_id;
+
+    time_t when;
+    time_t duration;
+    time_t non_clear_duration;
+
+    char *name;
+    uint32_t hash_name;
+
+    char *chart;
+    uint32_t hash_chart;
+
+    char *family;
+
+    char *exec;
+    char *recipient;
+    time_t exec_run_timestamp;
+    int exec_code;
+
+    char *source;
+    char *units;
+    char *info;
+
+    calculated_number old_value;
+    calculated_number new_value;
+
+    char *old_value_string;
+    char *new_value_string;
+
+    RRDCALC_STATUS old_status;
+    RRDCALC_STATUS new_status;
+
+    uint32_t flags;
+
+    int delay;
+    time_t delay_up_to_timestamp;
+
+    uint32_t updated_by_id;
+    uint32_t updates_id;
+
+    struct alarm_entry *next;
+};
+
+
+typedef struct alarm_log {
+    uint32_t next_log_id;
+    uint32_t next_alarm_id;
+    unsigned int count;
+    unsigned int max;
+    ALARM_ENTRY *alarms;
+    netdata_rwlock_t alarm_log_rwlock;
+} ALARM_LOG;
+
 
 // ----------------------------------------------------------------------------
 // RRD HOST
@@ -423,7 +503,7 @@ struct rrdhost {
     const char *tags;                               // tags for this host
     const char *timezone;                           // the timezone of the host
 
-    uint32_t flags;                                 // flags about this RRDHOST
+    RRDHOST_FLAGS flags;                            // flags about this RRDHOST
 
     int rrd_update_every;                           // the update frequency of the host
     long rrd_history_entries;                       // the number of history entries for the host's charts
@@ -438,20 +518,22 @@ struct rrdhost {
     // ------------------------------------------------------------------------
     // streaming of data to remote hosts - rrdpush
 
-    int rrdpush_send_enabled:1;                     // 1 when this host sends metrics to another netdata
+    unsigned int rrdpush_send_enabled:1;            // 1 when this host sends metrics to another netdata
     char *rrdpush_send_destination;                 // where to send metrics to
     char *rrdpush_send_api_key;                     // the api key at the receiving netdata
 
     // the following are state information for the threading
     // streaming metrics from this netdata to an upstream netdata
-    volatile int rrdpush_sender_spawn:1;            // 1 when the sender thread has been spawn
+    volatile unsigned int rrdpush_sender_spawn:1;   // 1 when the sender thread has been spawn
     netdata_thread_t rrdpush_sender_thread;         // the sender thread
 
-    volatile int rrdpush_sender_connected:1;        // 1 when the sender is ready to push metrics
+    volatile unsigned int rrdpush_sender_connected:1; // 1 when the sender is ready to push metrics
     int rrdpush_sender_socket;                      // the fd of the socket to the remote host, or -1
 
-    volatile int rrdpush_sender_error_shown:1;      // 1 when we have logged a communication error
-    volatile int rrdpush_sender_join:1;             // 1 when we have to join the sending thread
+    volatile unsigned int rrdpush_sender_error_shown:1; // 1 when we have logged a communication error
+    volatile unsigned int rrdpush_sender_join:1;    // 1 when we have to join the sending thread
+
+    SIMPLE_PATTERN *rrdpush_send_charts_matching;   // pattern to match the charts to be sent
 
     // metrics may be collected asynchronously
     // these synchronize all the threads willing the write to our sending buffer
@@ -471,7 +553,7 @@ struct rrdhost {
     // ------------------------------------------------------------------------
     // health monitoring options
 
-    int health_enabled:1;                           // 1 when this host has health enabled
+    unsigned int health_enabled:1;                  // 1 when this host has health enabled
     time_t health_delay_up_to;                      // a timestamp to delay alarms processing up to
     char *health_default_exec;                      // the full path of the alarms notifications program
     char *health_default_recipient;                 // the default recipient for all alarms
@@ -564,10 +646,11 @@ extern RRDHOST *rrdhost_find_or_create(
         , int update_every
         , long history
         , RRD_MEMORY_MODE mode
-        , int health_enabled
-        , int rrdpush_enabled
+        , unsigned int health_enabled
+        , unsigned int rrdpush_enabled
         , char *rrdpush_destination
         , char *rrdpush_api_key
+        , char *rrdpush_send_charts_matching
 );
 
 #if defined(NETDATA_INTERNAL_CHECKS) && defined(NETDATA_VERIFY_LOCKS)
@@ -666,28 +749,84 @@ extern void rrdset_isnot_obsolete(RRDSET *st);
 #define rrdset_first_entry_t(st) ((time_t)(rrdset_last_entry_t(st) - rrdset_duration(st)))
 
 // get the last slot updated in the round robin database
-#define rrdset_last_slot(st) ((unsigned long)(((st)->current_entry == 0) ? (st)->entries - 1 : (st)->current_entry - 1))
+#define rrdset_last_slot(st) ((size_t)(((st)->current_entry == 0) ? (st)->entries - 1 : (st)->current_entry - 1))
 
 // get the first / oldest slot updated in the round robin database
-#define rrdset_first_slot(st) ((unsigned long)( (((st)->counter >= ((unsigned long)(st)->entries)) ? (unsigned long)( ((unsigned long)(st)->current_entry > 0) ? ((unsigned long)(st)->current_entry) : ((unsigned long)(st)->entries) ) - 1 : 0) ))
+// #define rrdset_first_slot(st) ((size_t)( (((st)->counter >= ((unsigned long)(st)->entries)) ? (unsigned long)( ((unsigned long)(st)->current_entry > 0) ? ((unsigned long)(st)->current_entry) : ((unsigned long)(st)->entries) ) - 1 : 0) ))
+
+// return the slot that has the oldest value
+
+static inline size_t rrdset_first_slot(RRDSET *st) {
+    if(st->counter >= (size_t)st->entries) {
+        // the database has been rotated at least once
+        // the oldest entry is the one that will be next
+        // overwritten by data collection
+        return (size_t)st->current_entry;
+    }
+
+    // we do not have rotated the db yet
+    // so 0 is the first entry
+    return 0;
+}
 
 // get the slot of the round robin database, for the given timestamp (t)
 // it always returns a valid slot, although may not be for the time requested if the time is outside the round robin database
-#define rrdset_time2slot(st, t) ( \
-        (  (time_t)(t) >= rrdset_last_entry_t(st))  ? ( rrdset_last_slot(st) ) : \
-        ( ((time_t)(t) <= rrdset_first_entry_t(st)) ?   rrdset_first_slot(st) : \
-        ( (rrdset_last_slot(st) >= (unsigned long)((rrdset_last_entry_t(st) - (time_t)(t)) / (unsigned long)((st)->update_every)) ) ? \
-          (rrdset_last_slot(st) -  (unsigned long)((rrdset_last_entry_t(st) - (time_t)(t)) / (unsigned long)((st)->update_every)) ) : \
-          (rrdset_last_slot(st) -  (unsigned long)((rrdset_last_entry_t(st) - (time_t)(t)) / (unsigned long)((st)->update_every)) + (unsigned long)(st)->entries ) \
-        )))
+static inline size_t rrdset_time2slot(RRDSET *st, time_t t) {
+    size_t ret = 0;
+
+    if(t >= rrdset_last_entry_t(st)) {
+        // the requested time is after the last entry we have
+        ret = rrdset_last_slot(st);
+    }
+    else {
+        if(t <= rrdset_first_entry_t(st)) {
+            // the requested time is before the first entry we have
+            ret = rrdset_first_slot(st);
+        }
+        else {
+            if(rrdset_last_slot(st) >= ((rrdset_last_entry_t(st) - t) / (size_t)(st->update_every)))
+                ret = rrdset_last_slot(st) - ((rrdset_last_entry_t(st) - t) / (size_t)(st->update_every));
+            else
+                ret = rrdset_last_slot(st) - ((rrdset_last_entry_t(st) - t) / (size_t)(st->update_every)) + (unsigned long)st->entries;
+        }
+    }
+
+    if(unlikely(ret >= (size_t)st->entries)) {
+        error("INTERNAL ERROR: rrdset_time2slot() on %s returns values outside entries", st->name);
+        ret = (size_t)(st->entries - 1);
+    }
+
+    return ret;
+}
 
 // get the timestamp of a specific slot in the round robin database
-#define rrdset_slot2time(st, slot) ( rrdset_last_entry_t(st) - \
-        ((unsigned long)(st)->update_every * ( \
-                ( (unsigned long)(slot) > rrdset_last_slot(st)) ? \
-                ( (rrdset_last_slot(st) - (unsigned long)(slot) + (unsigned long)(st)->entries) ) : \
-                ( (rrdset_last_slot(st) - (unsigned long)(slot)) )) \
-        ))
+static inline time_t rrdset_slot2time(RRDSET *st, size_t slot) {
+    time_t ret;
+
+    if(slot >= (size_t)st->entries) {
+        error("INTERNAL ERROR: caller of rrdset_slot2time() gives invalid slot %zu", slot);
+        slot = (size_t)st->entries - 1;
+    }
+
+    if(slot > rrdset_last_slot(st)) {
+        ret = rrdset_last_entry_t(st) - (size_t)st->update_every * (rrdset_last_slot(st) - slot + (size_t)st->entries);
+    }
+    else {
+        ret = rrdset_last_entry_t(st) - (size_t)st->update_every;
+    }
+
+    if(unlikely(ret < rrdset_first_entry_t(st))) {
+        error("INTERNAL ERROR: rrdset_slot2time() on %s returns time too far in the past", st->name);
+        ret = rrdset_first_entry_t(st);
+    }
+
+    if(unlikely(ret > rrdset_last_entry_t(st))) {
+        error("INTERNAL ERROR: rrdset_slot2time() on %s returns time into the future", st->name);
+        ret = rrdset_last_entry_t(st);
+    }
+
+    return ret;
+}
 
 // ----------------------------------------------------------------------------
 // RRD DIMENSION functions
diff --git a/src/rrdcalc.c b/database/rrdcalc.c
index 4e41539e2..7f6a896b6 100644
--- a/src/rrdcalc.c
+++ b/database/rrdcalc.c
@@ -1,5 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #define NETDATA_HEALTH_INTERNALS
-#include "common.h"
+#include "rrd.h"
 
 // ----------------------------------------------------------------------------
 // RRDCALC management
@@ -64,15 +66,18 @@ static void rrdsetcalc_link(RRDSET *st, RRDCALC *rc) {
         st->red = rc->red;
     }
 
-    rc->local  = rrdvar_create_and_index("local",  &st->rrdvar_root_index, rc->name, RRDVAR_TYPE_CALCULATED, &rc->value);
-    rc->family = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rc->name, RRDVAR_TYPE_CALCULATED, &rc->value);
+    rc->local  = rrdvar_create_and_index("local",  &st->rrdvar_root_index, rc->name, RRDVAR_TYPE_CALCULATED, RRDVAR_OPTION_RRDCALC_LOCAL_VAR, &rc->value);
+    rc->family = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rc->name, RRDVAR_TYPE_CALCULATED, RRDVAR_OPTION_RRDCALC_FAMILY_VAR, &rc->value);
 
     char fullname[RRDVAR_MAX_LENGTH + 1];
     snprintfz(fullname, RRDVAR_MAX_LENGTH, "%s.%s", st->id, rc->name);
-    rc->hostid   = rrdvar_create_and_index("host", &host->rrdvar_root_index, fullname, RRDVAR_TYPE_CALCULATED, &rc->value);
+    rc->hostid   = rrdvar_create_and_index("host", &host->rrdvar_root_index, fullname, RRDVAR_TYPE_CALCULATED, RRDVAR_OPTION_RRDCALC_HOST_CHARTID_VAR, &rc->value);
 
     snprintfz(fullname, RRDVAR_MAX_LENGTH, "%s.%s", st->name, rc->name);
-    rc->hostname = rrdvar_create_and_index("host", &host->rrdvar_root_index, fullname, RRDVAR_TYPE_CALCULATED, &rc->value);
+    rc->hostname = rrdvar_create_and_index("host", &host->rrdvar_root_index, fullname, RRDVAR_TYPE_CALCULATED, RRDVAR_OPTION_RRDCALC_HOST_CHARTNAME_VAR, &rc->value);
+
+    if(rc->hostid && !rc->hostname)
+        rc->hostid->options |= RRDVAR_OPTION_RRDCALC_HOST_CHARTNAME_VAR;
 
     if(!rc->units) rc->units = strdupz(st->units);
 
@@ -358,7 +363,7 @@ inline RRDCALC *rrdcalc_create(RRDHOST *host, RRDCALCTEMPLATE *rt, const char *c
             (rc->recipient)?rc->recipient:"DEFAULT",
             rc->green,
             rc->red,
-            rc->group,
+            (int)rc->group,
             rc->after,
             rc->before,
             rc->options,
diff --git a/database/rrdcalc.h b/database/rrdcalc.h
new file mode 100644
index 000000000..0c7cd0aa1
--- /dev/null
+++ b/database/rrdcalc.h
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "rrd.h"
+
+#ifndef NETDATA_RRDCALC_H
+#define NETDATA_RRDCALC_H 1
+
+// calculated variables (defined in health configuration)
+// These aggregate time-series data at fixed intervals
+// (defined in their update_every member below)
+// They increase the overhead of netdata.
+//
+// These calculations are allocated and linked (->next)
+// under RRDHOST.
+// Then are also linked to RRDSET (of course only when the
+// chart is found, via ->rrdset_next and ->rrdset_prev).
+// This double-linked list is maintained sorted at all times
+// having as RRDSET.calculations the RRDCALC to be processed
+// next.
+
+#define RRDCALC_FLAG_DB_ERROR              0x00000001
+#define RRDCALC_FLAG_DB_NAN                0x00000002
+/* #define RRDCALC_FLAG_DB_STALE           0x00000004 */
+#define RRDCALC_FLAG_CALC_ERROR            0x00000008
+#define RRDCALC_FLAG_WARN_ERROR            0x00000010
+#define RRDCALC_FLAG_CRIT_ERROR            0x00000020
+#define RRDCALC_FLAG_RUNNABLE              0x00000040
+#define RRDCALC_FLAG_NO_CLEAR_NOTIFICATION 0x80000000
+
+struct rrdcalc {
+    uint32_t id;                    // the unique id of this alarm
+    uint32_t next_event_id;         // the next event id that will be used for this alarm
+
+    char *name;                     // the name of this alarm
+    uint32_t hash;
+
+    char *exec;                     // the command to execute when this alarm switches state
+    char *recipient;                // the recipient of the alarm (the first parameter to exec)
+
+    char *chart;                    // the chart id this should be linked to
+    uint32_t hash_chart;
+
+    char *source;                   // the source of this alarm
+    char *units;                    // the units of the alarm
+    char *info;                     // a short description of the alarm
+
+    int update_every;               // update frequency for the alarm
+
+    // the red and green threshold of this alarm (to be set to the chart)
+    calculated_number green;
+    calculated_number red;
+
+    // ------------------------------------------------------------------------
+    // database lookup settings
+
+    char *dimensions;               // the chart dimensions
+    RRDR_GROUPING group;               // grouping method: average, max, etc.
+    int before;                     // ending point in time-series
+    int after;                      // starting point in time-series
+    uint32_t options;               // calculation options
+
+    // ------------------------------------------------------------------------
+    // expressions related to the alarm
+
+    EVAL_EXPRESSION *calculation;   // expression to calculate the value of the alarm
+    EVAL_EXPRESSION *warning;       // expression to check the warning condition
+    EVAL_EXPRESSION *critical;      // expression to check the critical condition
+
+    // ------------------------------------------------------------------------
+    // notification delay settings
+
+    int delay_up_duration;         // duration to delay notifications when alarm raises
+    int delay_down_duration;       // duration to delay notifications when alarm lowers
+    int delay_max_duration;        // the absolute max delay to apply to this alarm
+    float delay_multiplier;        // multiplier for all delays when alarms switch status
+    // while now < delay_up_to
+
+    // ------------------------------------------------------------------------
+    // runtime information
+
+    RRDCALC_STATUS status;          // the current status of the alarm
+
+    calculated_number value;        // the current value of the alarm
+    calculated_number old_value;    // the previous value of the alarm
+
+    uint32_t rrdcalc_flags;         // check RRDCALC_FLAG_*
+
+    time_t last_updated;            // the last update timestamp of the alarm
+    time_t next_update;             // the next update timestamp of the alarm
+    time_t last_status_change;      // the timestamp of the last time this alarm changed status
+
+    time_t db_after;                // the first timestamp evaluated by the db lookup
+    time_t db_before;               // the last timestamp evaluated by the db lookup
+
+    time_t delay_up_to_timestamp;   // the timestamp up to which we should delay notifications
+    int delay_up_current;           // the current up notification delay duration
+    int delay_down_current;         // the current down notification delay duration
+    int delay_last;                 // the last delay we used
+
+    // ------------------------------------------------------------------------
+    // variables this alarm exposes to the rest of the alarms
+
+    RRDVAR *local;
+    RRDVAR *family;
+    RRDVAR *hostid;
+    RRDVAR *hostname;
+
+    // ------------------------------------------------------------------------
+    // the chart this alarm it is linked to
+
+    struct rrdset *rrdset;
+
+    // linking of this alarm on its chart
+    struct rrdcalc *rrdset_next;
+    struct rrdcalc *rrdset_prev;
+
+    struct rrdcalc *next;
+};
+
+#define RRDCALC_HAS_DB_LOOKUP(rc) ((rc)->after)
+
+extern void rrdsetcalc_link_matching(RRDSET *st);
+extern void rrdsetcalc_unlink(RRDCALC *rc);
+extern RRDCALC *rrdcalc_find(RRDSET *st, const char *name);
+
+extern const char *rrdcalc_status2string(RRDCALC_STATUS status);
+
+extern void rrdcalc_free(RRDCALC *rc);
+extern void rrdcalc_unlink_and_free(RRDHOST *host, RRDCALC *rc);
+
+extern int rrdcalc_exists(RRDHOST *host, const char *chart, const char *name, uint32_t hash_chart, uint32_t hash_name);
+extern uint32_t rrdcalc_get_unique_id(RRDHOST *host, const char *chart, const char *name, uint32_t *next_event_id);
+extern RRDCALC *rrdcalc_create(RRDHOST *host, RRDCALCTEMPLATE *rt, const char *chart);
+extern void rrdcalc_create_part2(RRDHOST *host, RRDCALC *rc);
+
+#endif //NETDATA_RRDCALC_H
diff --git a/src/rrdcalctemplate.c b/database/rrdcalctemplate.c
index 75a7002b3..ba7e7ec94 100644
--- a/src/rrdcalctemplate.c
+++ b/database/rrdcalctemplate.c
@@ -1,5 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #define NETDATA_HEALTH_INTERNALS
-#include "common.h"
+#include "rrd.h"
 
 // ----------------------------------------------------------------------------
 // RRDCALCTEMPLATE management
diff --git a/database/rrdcalctemplate.h b/database/rrdcalctemplate.h
new file mode 100644
index 000000000..2235ecaa1
--- /dev/null
+++ b/database/rrdcalctemplate.h
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_RRDCALCTEMPLATE_H
+#define NETDATA_RRDCALCTEMPLATE_H 1
+
+#include "rrd.h"
+
+// RRDCALCTEMPLATE
+// these are to be applied to charts found dynamically
+// based on their context.
+struct rrdcalctemplate {
+    char *name;
+    uint32_t hash_name;
+
+    char *exec;
+    char *recipient;
+
+    char *context;
+    uint32_t hash_context;
+
+    char *family_match;
+    SIMPLE_PATTERN *family_pattern;
+
+    char *source;                   // the source of this alarm
+    char *units;                    // the units of the alarm
+    char *info;                     // a short description of the alarm
+
+    int update_every;               // update frequency for the alarm
+
+    // the red and green threshold of this alarm (to be set to the chart)
+    calculated_number green;
+    calculated_number red;
+
+    // ------------------------------------------------------------------------
+    // database lookup settings
+
+    char *dimensions;               // the chart dimensions
+    RRDR_GROUPING group;               // grouping method: average, max, etc.
+    int before;                     // ending point in time-series
+    int after;                      // starting point in time-series
+    uint32_t options;               // calculation options
+
+    // ------------------------------------------------------------------------
+    // notification delay settings
+
+    int delay_up_duration;         // duration to delay notifications when alarm raises
+    int delay_down_duration;       // duration to delay notifications when alarm lowers
+    int delay_max_duration;        // the absolute max delay to apply to this alarm
+    float delay_multiplier;        // multiplier for all delays when alarms switch status
+
+    // ------------------------------------------------------------------------
+    // expressions related to the alarm
+
+    EVAL_EXPRESSION *calculation;
+    EVAL_EXPRESSION *warning;
+    EVAL_EXPRESSION *critical;
+
+    struct rrdcalctemplate *next;
+};
+
+#define RRDCALCTEMPLATE_HAS_CALCULATION(rt) ((rt)->after)
+
+extern void rrdcalctemplate_link_matching(RRDSET *st);
+
+extern void rrdcalctemplate_free(RRDCALCTEMPLATE *rt);
+extern void rrdcalctemplate_unlink_and_free(RRDHOST *host, RRDCALCTEMPLATE *rt);
+
+#endif //NETDATA_RRDCALCTEMPLATE_H
diff --git a/src/rrddim.c b/database/rrddim.c
index a54c6452f..95e485106 100644
--- a/src/rrddim.c
+++ b/database/rrddim.c
@@ -1,5 +1,7 @@
-#define NETDATA_RRD_INTERNALS 1
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define NETDATA_RRD_INTERNALS
+#include "rrd.h"
 
 // ----------------------------------------------------------------------------
 // RRDDIM index
@@ -47,6 +49,7 @@ inline int rrddim_set_name(RRDSET *st, RRDDIM *rd, const char *name) {
     rd->hash_name = simple_hash(rd->name);
     rrddimvar_rename_all(rd);
     rd->exposed = 0;
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
     return 1;
 }
 
@@ -58,6 +61,7 @@ inline int rrddim_set_algorithm(RRDSET *st, RRDDIM *rd, RRD_ALGORITHM algorithm)
     rd->algorithm = algorithm;
     rd->exposed = 0;
     rrdset_flag_set(st, RRDSET_FLAG_HOMEGENEOUS_CHECK);
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
     return 1;
 }
 
@@ -69,6 +73,7 @@ inline int rrddim_set_multiplier(RRDSET *st, RRDDIM *rd, collected_number multip
     rd->multiplier = multiplier;
     rd->exposed = 0;
     rrdset_flag_set(st, RRDSET_FLAG_HOMEGENEOUS_CHECK);
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
     return 1;
 }
 
@@ -80,6 +85,7 @@ inline int rrddim_set_divisor(RRDSET *st, RRDDIM *rd, collected_number divisor)
     rd->divisor = divisor;
     rd->exposed = 0;
     rrdset_flag_set(st, RRDSET_FLAG_HOMEGENEOUS_CHECK);
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
     return 1;
 }
 
@@ -87,6 +93,11 @@ inline int rrddim_set_divisor(RRDSET *st, RRDDIM *rd, collected_number divisor)
 // RRDDIM create a dimension
 
 RRDDIM *rrddim_add_custom(RRDSET *st, const char *id, const char *name, collected_number multiplier, collected_number divisor, RRD_ALGORITHM algorithm, RRD_MEMORY_MODE memory_mode) {
+    rrdset_wrlock(st);
+
+    rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
+
     RRDDIM *rd = rrddim_find(st, id);
     if(unlikely(rd)) {
         debug(D_RRD_CALLS, "Cannot create rrd dimension '%s/%s', it already exists.", st->id, name?name:"<NONAME>");
@@ -96,6 +107,7 @@ RRDDIM *rrddim_add_custom(RRDSET *st, const char *id, const char *name, collecte
         rrddim_set_multiplier(st, rd, multiplier);
         rrddim_set_divisor(st, rd, divisor);
 
+        rrdset_unlock(st);
         return rd;
     }
 
@@ -236,7 +248,6 @@ RRDDIM *rrddim_add_custom(RRDSET *st, const char *id, const char *name, collecte
     rd->rrdset = st;
 
     // append this dimension
-    rrdset_wrlock(st);
     if(!st->dimensions)
         st->dimensions = rd;
     else {
@@ -268,11 +279,10 @@ RRDDIM *rrddim_add_custom(RRDSET *st, const char *id, const char *name, collecte
         rrddimvar_create(rd, RRDVAR_TYPE_TIME_T, NULL, "_last_collected_t", &rd->last_collected_time.tv_sec, RRDVAR_OPTION_DEFAULT);
     }
 
-    rrdset_unlock(st);
-
     if(unlikely(rrddim_index_add(st, rd) != rd))
         error("RRDDIM: INTERNAL ERROR: attempt to index duplicate dimension '%s' on chart '%s'", rd->id, st->id);
 
+    rrdset_unlock(st);
     return(rd);
 }
 
diff --git a/src/rrddimvar.c b/database/rrddimvar.c
index 28a3e7fa6..3c2ed75e5 100644
--- a/src/rrddimvar.c
+++ b/database/rrddimvar.c
@@ -1,5 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #define NETDATA_HEALTH_INTERNALS
-#include "common.h"
+#include "rrd.h"
 
 // ----------------------------------------------------------------------------
 // RRDDIMVAR management
@@ -117,8 +119,8 @@ static inline void rrddimvar_create_variables(RRDDIMVAR *rs) {
     // - $id
     // - $name
 
-    rs->var_local_id           = rrdvar_create_and_index("local", &st->rrdvar_root_index, rs->key_id, rs->type, rs->value);
-    rs->var_local_name         = rrdvar_create_and_index("local", &st->rrdvar_root_index, rs->key_name, rs->type, rs->value);
+    rs->var_local_id           = rrdvar_create_and_index("local", &st->rrdvar_root_index, rs->key_id, rs->type, RRDVAR_OPTION_DEFAULT, rs->value);
+    rs->var_local_name         = rrdvar_create_and_index("local", &st->rrdvar_root_index, rs->key_name, rs->type, RRDVAR_OPTION_DEFAULT, rs->value);
 
     // FAMILY VARIABLES FOR THIS DIMENSION
     // -----------------------------------
@@ -129,10 +131,10 @@ static inline void rrddimvar_create_variables(RRDDIMVAR *rs) {
     // - $chart-context.id
     // - $chart-context.name
 
-    rs->var_family_id          = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_id, rs->type, rs->value);
-    rs->var_family_name        = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_name, rs->type, rs->value);
-    rs->var_family_contextid   = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_contextid, rs->type, rs->value);
-    rs->var_family_contextname = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_contextname, rs->type, rs->value);
+    rs->var_family_id          = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_id, rs->type, RRDVAR_OPTION_DEFAULT, rs->value);
+    rs->var_family_name        = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_name, rs->type, RRDVAR_OPTION_DEFAULT, rs->value);
+    rs->var_family_contextid   = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_contextid, rs->type, RRDVAR_OPTION_DEFAULT, rs->value);
+    rs->var_family_contextname = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_contextname, rs->type, RRDVAR_OPTION_DEFAULT, rs->value);
 
     // HOST VARIABLES FOR THIS DIMENSION
     // -----------------------------------
@@ -143,14 +145,15 @@ static inline void rrddimvar_create_variables(RRDDIMVAR *rs) {
     // - $chart-name.id
     // - $chart-name.name
 
-    rs->var_host_chartidid      = rrdvar_create_and_index("host", &host->rrdvar_root_index, rs->key_fullidid, rs->type, rs->value);
-    rs->var_host_chartidname    = rrdvar_create_and_index("host", &host->rrdvar_root_index, rs->key_fullidname, rs->type, rs->value);
-    rs->var_host_chartnameid    = rrdvar_create_and_index("host", &host->rrdvar_root_index, rs->key_fullnameid, rs->type, rs->value);
-    rs->var_host_chartnamename  = rrdvar_create_and_index("host", &host->rrdvar_root_index, rs->key_fullnamename, rs->type, rs->value);
+    rs->var_host_chartidid      = rrdvar_create_and_index("host", &host->rrdvar_root_index, rs->key_fullidid, rs->type, RRDVAR_OPTION_DEFAULT, rs->value);
+    rs->var_host_chartidname    = rrdvar_create_and_index("host", &host->rrdvar_root_index, rs->key_fullidname, rs->type, RRDVAR_OPTION_DEFAULT, rs->value);
+    rs->var_host_chartnameid    = rrdvar_create_and_index("host", &host->rrdvar_root_index, rs->key_fullnameid, rs->type, RRDVAR_OPTION_DEFAULT, rs->value);
+    rs->var_host_chartnamename  = rrdvar_create_and_index("host", &host->rrdvar_root_index, rs->key_fullnamename, rs->type, RRDVAR_OPTION_DEFAULT, rs->value);
 }
 
 RRDDIMVAR *rrddimvar_create(RRDDIM *rd, RRDVAR_TYPE type, const char *prefix, const char *suffix, void *value, RRDVAR_OPTIONS options) {
     RRDSET *st = rd->rrdset;
+    (void)st;
 
     debug(D_VARIABLES, "RRDDIMSET create for chart id '%s' name '%s', dimension id '%s', name '%s%s%s'", st->id, st->name, rd->id, (prefix)?prefix:"", rd->name, (suffix)?suffix:"");
 
@@ -177,6 +180,8 @@ RRDDIMVAR *rrddimvar_create(RRDDIM *rd, RRDVAR_TYPE type, const char *prefix, co
 
 void rrddimvar_rename_all(RRDDIM *rd) {
     RRDSET *st = rd->rrdset;
+    (void)st;
+
     debug(D_VARIABLES, "RRDDIMSET rename for chart id '%s' name '%s', dimension id '%s', name '%s'", st->id, st->name, rd->id, rd->name);
 
     RRDDIMVAR *rs, *next = rd->variables;
diff --git a/database/rrddimvar.h b/database/rrddimvar.h
new file mode 100644
index 000000000..3494824be
--- /dev/null
+++ b/database/rrddimvar.h
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_RRDDIMVAR_H
+#define NETDATA_RRDDIMVAR_H 1
+
+#include "rrd.h"
+
+// variables linked to individual dimensions
+// We link variables to point the values that are already
+// calculated / processed by the normal data collection process
+// This means, there will be no speed penalty for using
+// these variables
+struct rrddimvar {
+    char *prefix;
+    char *suffix;
+
+    char *key_id;                   // dimension id
+    char *key_name;                 // dimension name
+    char *key_contextid;            // context + dimension id
+    char *key_contextname;          // context + dimension name
+    char *key_fullidid;             // chart type.chart id + dimension id
+    char *key_fullidname;           // chart type.chart id + dimension name
+    char *key_fullnameid;           // chart type.chart name + dimension id
+    char *key_fullnamename;         // chart type.chart name + dimension name
+
+    RRDVAR_TYPE type;
+    void *value;
+
+    RRDVAR_OPTIONS options;
+
+    RRDVAR *var_local_id;
+    RRDVAR *var_local_name;
+
+    RRDVAR *var_family_id;
+    RRDVAR *var_family_name;
+    RRDVAR *var_family_contextid;
+    RRDVAR *var_family_contextname;
+
+    RRDVAR *var_host_chartidid;
+    RRDVAR *var_host_chartidname;
+    RRDVAR *var_host_chartnameid;
+    RRDVAR *var_host_chartnamename;
+
+    struct rrddim *rrddim;
+
+    struct rrddimvar *next;
+};
+
+
+extern void rrddimvar_rename_all(RRDDIM *rd);
+extern RRDDIMVAR *rrddimvar_create(RRDDIM *rd, RRDVAR_TYPE type, const char *prefix, const char *suffix, void *value, RRDVAR_OPTIONS options);
+extern void rrddimvar_free(RRDDIMVAR *rs);
+
+
+
+#endif //NETDATA_RRDDIMVAR_H
diff --git a/src/rrdfamily.c b/database/rrdfamily.c
index 905ae480b..f75f0adc3 100644
--- a/src/rrdfamily.c
+++ b/database/rrdfamily.c
@@ -1,5 +1,7 @@
-#define NETDATA_RRD_INTERNALS 1
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define NETDATA_RRD_INTERNALS
+#include "rrd.h"
 
 // ----------------------------------------------------------------------------
 // RRDFAMILY index
diff --git a/src/rrdhost.c b/database/rrdhost.c
index e62e61ae8..43aa2daa2 100644
--- a/src/rrdhost.c
+++ b/database/rrdhost.c
@@ -1,5 +1,7 @@
-#define NETDATA_RRD_INTERNALS 1
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define NETDATA_RRD_INTERNALS
+#include "rrd.h"
 
 RRDHOST *localhost = NULL;
 size_t rrd_hosts_available = 0;
@@ -116,10 +118,11 @@ RRDHOST *rrdhost_create(const char *hostname,
                         int update_every,
                         long entries,
                         RRD_MEMORY_MODE memory_mode,
-                        int health_enabled,
-                        int rrdpush_enabled,
+                        unsigned int health_enabled,
+                        unsigned int rrdpush_enabled,
                         char *rrdpush_destination,
                         char *rrdpush_api_key,
+                        char *rrdpush_send_charts_matching,
                         int is_localhost
 ) {
     debug(D_RRDHOST, "Host '%s': adding with guid '%s'", hostname, guid);
@@ -132,9 +135,10 @@ RRDHOST *rrdhost_create(const char *hostname,
     host->rrd_history_entries = align_entries_to_pagesize(memory_mode, entries);
     host->rrd_memory_mode     = memory_mode;
     host->health_enabled      = (memory_mode == RRD_MEMORY_MODE_NONE)? 0 : health_enabled;
-    host->rrdpush_send_enabled     = (rrdpush_enabled && rrdpush_destination && *rrdpush_destination && rrdpush_api_key && *rrdpush_api_key);
+    host->rrdpush_send_enabled     = (rrdpush_enabled && rrdpush_destination && *rrdpush_destination && rrdpush_api_key && *rrdpush_api_key) ? 1 : 0;
     host->rrdpush_send_destination = (host->rrdpush_send_enabled)?strdupz(rrdpush_destination):NULL;
     host->rrdpush_send_api_key     = (host->rrdpush_send_enabled)?strdupz(rrdpush_api_key):NULL;
+    host->rrdpush_send_charts_matching = simple_pattern_create(rrdpush_send_charts_matching, NULL, SIMPLE_PATTERN_EXACT);
 
     host->rrdpush_sender_pipe[0] = -1;
     host->rrdpush_sender_pipe[1] = -1;
@@ -227,7 +231,7 @@ RRDHOST *rrdhost_create(const char *hostname,
 
     snprintfz(filename, FILENAME_MAX, "%s/alarm-notify.sh", netdata_configured_plugins_dir);
     host->health_default_exec = strdupz(config_get(CONFIG_SECTION_HEALTH, "script to execute on alarm", filename));
-    host->health_default_recipient = strdup("root");
+    host->health_default_recipient = strdupz("root");
 
 
     // ------------------------------------------------------------------------
@@ -238,7 +242,7 @@ RRDHOST *rrdhost_create(const char *hostname,
         health_alarm_log_open(host);
 
         rrdhost_wrlock(host);
-        health_readdir(host, health_config_dir());
+        health_readdir(host, health_user_config_dir(), health_stock_config_dir(), NULL);
         rrdhost_unlock(host);
     }
 
@@ -323,10 +327,11 @@ RRDHOST *rrdhost_find_or_create(
         , int update_every
         , long history
         , RRD_MEMORY_MODE mode
-        , int health_enabled
-        , int rrdpush_enabled
+        , unsigned int health_enabled
+        , unsigned int rrdpush_enabled
         , char *rrdpush_destination
         , char *rrdpush_api_key
+        , char *rrdpush_send_charts_matching
 ) {
     debug(D_RRDHOST, "Searching for host '%s' with guid '%s'", hostname, guid);
 
@@ -349,6 +354,7 @@ RRDHOST *rrdhost_find_or_create(
                 , rrdpush_enabled
                 , rrdpush_destination
                 , rrdpush_api_key
+                , rrdpush_send_charts_matching
                 , 0
         );
     }
@@ -461,6 +467,7 @@ void rrd_init(char *hostname) {
             , default_rrdpush_enabled
             , default_rrdpush_destination
             , default_rrdpush_api_key
+            , default_rrdpush_send_charts_matching
             , 1
     );
     rrd_unlock();
@@ -574,6 +581,7 @@ void rrdhost_free(RRDHOST *host) {
     freez(host->health_log_filename);
     freez(host->hostname);
     freez(host->registry_hostname);
+    simple_pattern_free(host->rrdpush_send_charts_matching);
     rrdhost_unlock(host);
     netdata_rwlock_destroy(&host->health_log.alarm_log_rwlock);
     netdata_rwlock_destroy(&host->rrdhost_rwlock);
diff --git a/src/rrdset.c b/database/rrdset.c
index bbd0ae728..3f5ba73b6 100644
--- a/src/rrdset.c
+++ b/database/rrdset.c
@@ -1,5 +1,7 @@
-#define NETDATA_RRD_INTERNALS 1
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define NETDATA_RRD_INTERNALS
+#include "rrd.h"
 
 void __rrdset_check_rdlock(RRDSET *st, const char *file, const char *function, const unsigned long line) {
     debug(D_RRD_CALLS, "Checking read lock on chart '%s'", st->id);
@@ -172,27 +174,30 @@ int rrdset_set_name(RRDSET *st, const char *name) {
     if(unlikely(rrdset_index_add_name(host, st) != st))
         error("RRDSET: INTERNAL ERROR: attempted to index duplicate chart name '%s'", st->name);
 
+    rrdset_flag_clear(st, RRDSET_FLAG_BACKEND_SEND);
+    rrdset_flag_clear(st, RRDSET_FLAG_BACKEND_IGNORE);
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_SEND);
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_IGNORE);
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
+
     return 1;
 }
 
 inline void rrdset_is_obsolete(RRDSET *st) {
-    RRDHOST *host = st->rrdhost;
-
     if(unlikely(!(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE)))) {
         rrdset_flag_set(st, RRDSET_FLAG_OBSOLETE);
-        rrdset_flag_clear(st, RRDSET_FLAG_EXPOSED_UPSTREAM);
+        rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
 
         // the chart will not get more updates (data collection)
         // so, we have to push its definition now
-        if(unlikely(host->rrdpush_send_enabled))
-            rrdset_push_chart_definition(st);
+        rrdset_push_chart_definition_now(st);
     }
 }
 
 inline void rrdset_isnot_obsolete(RRDSET *st) {
     if(unlikely((rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE)))) {
         rrdset_flag_clear(st, RRDSET_FLAG_OBSOLETE);
-        rrdset_flag_clear(st, RRDSET_FLAG_EXPOSED_UPSTREAM);
+        rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
 
         // the chart will be pushed upstream automatically
         // due to data collection
@@ -201,6 +206,8 @@ inline void rrdset_isnot_obsolete(RRDSET *st) {
 
 inline void rrdset_update_heterogeneous_flag(RRDSET *st) {
     RRDHOST *host = st->rrdhost;
+    (void)host;
+
     RRDDIM *rd;
 
     rrdset_flag_clear(st, RRDSET_FLAG_HOMEGENEOUS_CHECK);
@@ -476,13 +483,19 @@ RRDSET *rrdset_create_custom(
     snprintfz(fullid, RRD_ID_LENGTH_MAX, "%s.%s", type, id);
 
     RRDSET *st = rrdset_find_on_create(host, fullid);
-    if(st) return st;
+    if(st) {
+        rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
+        rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
+        return st;
+    }
 
     rrdhost_wrlock(host);
 
     st = rrdset_find_on_create(host, fullid);
     if(st) {
         rrdhost_unlock(host);
+        rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
+        rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
         return st;
     }
 
@@ -581,8 +594,8 @@ RRDSET *rrdset_create_custom(
                     memset(st, 0, size);
                 }
                 else if(st->last_updated.tv_sec > now + update_every) {
-                    error("File %s refers to the future. Clearing it.", fullfilename);
-                    memset(st, 0, size);
+                    error("File %s refers to the future by %zd secs. Resetting it to now.", fullfilename, (ssize_t)(st->last_updated.tv_sec - now));
+                    st->last_updated.tv_sec = now;
                 }
 
                 // make sure the database is aligned
@@ -603,10 +616,10 @@ RRDSET *rrdset_create_custom(
         st->rrd_memory_mode = (memory_mode == RRD_MEMORY_MODE_NONE) ? RRD_MEMORY_MODE_NONE : RRD_MEMORY_MODE_ALLOC;
     }
 
-    st->plugin_name = plugin?strdup(plugin):NULL;
-    st->module_name = module?strdup(module):NULL;
+    st->plugin_name = plugin?strdupz(plugin):NULL;
+    st->module_name = module?strdupz(module):NULL;
 
-    st->config_section = strdup(config_section);
+    st->config_section = strdupz(config_section);
     st->rrdhost = host;
     st->memsize = size;
     st->entries = entries;
@@ -644,7 +657,12 @@ RRDSET *rrdset_create_custom(
     rrdset_flag_clear(st, RRDSET_FLAG_DETAIL);
     rrdset_flag_clear(st, RRDSET_FLAG_DEBUG);
     rrdset_flag_clear(st, RRDSET_FLAG_OBSOLETE);
-    rrdset_flag_clear(st, RRDSET_FLAG_EXPOSED_UPSTREAM);
+    rrdset_flag_clear(st, RRDSET_FLAG_BACKEND_SEND);
+    rrdset_flag_clear(st, RRDSET_FLAG_BACKEND_IGNORE);
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_SEND);
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_IGNORE);
+    rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
+    rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
 
     // if(!strcmp(st->id, "disk_util.dm-0")) {
     //     st->debug = 1;
@@ -710,7 +728,7 @@ RRDSET *rrdset_create_custom(
 // RRDSET - data collection iteration control
 
 inline void rrdset_next_usec_unfiltered(RRDSET *st, usec_t microseconds) {
-    if(unlikely(!st->last_collected_time.tv_sec || !microseconds)) {
+    if(unlikely(!st->last_collected_time.tv_sec || !microseconds || (rrdset_flag_check_noatomic(st, RRDSET_FLAG_SYNC_CLOCK)))) {
         // call the full next_usec() function
         rrdset_next_usec(st, microseconds);
         return;
@@ -723,13 +741,36 @@ inline void rrdset_next_usec(RRDSET *st, usec_t microseconds) {
     struct timeval now;
     now_realtime_timeval(&now);
 
+    #ifdef NETDATA_INTERNAL_CHECKS
+    char *discard_reason = NULL;
+    usec_t discarded = microseconds;
+    #endif
+
+    if(unlikely(rrdset_flag_check_noatomic(st, RRDSET_FLAG_SYNC_CLOCK))) {
+        // the chart needs to be re-synced to current time
+        rrdset_flag_clear(st, RRDSET_FLAG_SYNC_CLOCK);
+
+        // discard the microseconds supplied
+        microseconds = 0;
+
+        #ifdef NETDATA_INTERNAL_CHECKS
+        if(!discard_reason) discard_reason = "SYNC CLOCK FLAG";
+        #endif
+    }
+
     if(unlikely(!st->last_collected_time.tv_sec)) {
         // the first entry
         microseconds = st->update_every * USEC_PER_SEC;
+        #ifdef NETDATA_INTERNAL_CHECKS
+        if(!discard_reason) discard_reason = "FIRST DATA COLLECTION";
+        #endif
     }
     else if(unlikely(!microseconds)) {
         // no dt given by the plugin
         microseconds = dt_usec(&now, &st->last_collected_time);
+        #ifdef NETDATA_INTERNAL_CHECKS
+        if(!discard_reason) discard_reason = "NO USEC GIVEN BY COLLECTOR";
+        #endif
     }
     else {
         // microseconds has the time since the last collection
@@ -748,18 +789,52 @@ inline void rrdset_next_usec(RRDSET *st, usec_t microseconds) {
             last_updated_time_align(st);
 
             microseconds    = st->update_every * USEC_PER_SEC;
+            #ifdef NETDATA_INTERNAL_CHECKS
+            if(!discard_reason) discard_reason = "COLLECTION TIME IN FUTURE";
+            #endif
         }
-        else if(unlikely((usec_t)since_last_usec > (usec_t)(st->update_every * 10 * USEC_PER_SEC))) {
+        else if(unlikely((usec_t)since_last_usec > (usec_t)(st->update_every * 5 * USEC_PER_SEC))) {
             // oops! the database is too far behind
             info("RRD database for chart '%s' on host '%s' is %0.5" LONG_DOUBLE_MODIFIER " secs in the past (counter #%zu, update #%zu). Adjusting it to current time.", st->id, st->rrdhost->hostname, (LONG_DOUBLE)since_last_usec / USEC_PER_SEC, st->counter, st->counter_done);
 
             microseconds = (usec_t)since_last_usec;
+            #ifdef NETDATA_INTERNAL_CHECKS
+            if(!discard_reason) discard_reason = "COLLECTION TIME TOO FAR IN THE PAST";
+            #endif
+        }
+
+#ifdef NETDATA_INTERNAL_CHECKS
+        if(since_last_usec > 0 && (susec_t)microseconds < since_last_usec) {
+            static __thread susec_t min_delta = USEC_PER_SEC * 3600, permanent_min_delta = 0;
+            static __thread time_t last_t = 0;
+
+            // the first time initialize it so that it will make the check later
+            if(last_t == 0) last_t = now.tv_sec + 60;
+
+            susec_t delta = since_last_usec - (susec_t)microseconds;
+            if(delta < min_delta) min_delta = delta;
+
+            if(now.tv_sec >= last_t + 60) {
+                last_t = now.tv_sec;
+
+                if(min_delta > permanent_min_delta) {
+                    info("MINIMUM MICROSECONDS DELTA of thread %d increased from %lld to %lld (+%lld)", gettid(), permanent_min_delta, min_delta, min_delta - permanent_min_delta);
+                    permanent_min_delta = min_delta;
+                }
+
+                min_delta = USEC_PER_SEC * 3600;
+            }
         }
+#endif
     }
 
     #ifdef NETDATA_INTERNAL_CHECKS
     debug(D_RRD_CALLS, "rrdset_next_usec() for chart %s with microseconds %llu", st->name, microseconds);
     rrdset_debug(st, "NEXT: %llu microseconds", microseconds);
+
+    if(discarded && discarded != microseconds)
+        info("host '%s', chart '%s': discarded data collection time of %llu usec, replaced with %llu usec, reason: '%s'", st->rrdhost->hostname, st->id, discarded, microseconds, discard_reason?discard_reason:"UNDEFINED");
+
     #endif
 
     st->usec_since_last_update = microseconds;
@@ -857,6 +932,8 @@ static inline size_t rrdset_done_interpolate(
     size_t stored_entries = 0;     // the number of entries we have stored in the db, during this call to rrdset_done()
 
     usec_t first_ut = last_stored_ut, last_ut = 0;
+    (void)first_ut;
+
     ssize_t iterations = (ssize_t)((now_collect_ut - last_stored_ut) / (update_every_ut));
     if((now_collect_ut % (update_every_ut)) == 0) iterations++;
 
diff --git a/src/rrdsetvar.c b/database/rrdsetvar.c
index aec57efa9..1bb883f0b 100644
--- a/src/rrdsetvar.c
+++ b/database/rrdsetvar.c
@@ -1,5 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #define NETDATA_HEALTH_INTERNALS
-#include "common.h"
+#include "rrd.h"
 
 // ----------------------------------------------------------------------------
 // RRDSETVAR management
@@ -43,6 +45,10 @@ static inline void rrdsetvar_create_variables(RRDSETVAR *rs) {
     RRDSET *st = rs->rrdset;
     RRDHOST *host = st->rrdhost;
 
+    RRDVAR_OPTIONS options = rs->options;
+    if(rs->options & RRDVAR_OPTION_ALLOCATED)
+        options &= ~ RRDVAR_OPTION_ALLOCATED;
+
     // ------------------------------------------------------------------------
     // free the old ones (if any)
 
@@ -60,17 +66,17 @@ static inline void rrdsetvar_create_variables(RRDSETVAR *rs) {
 
     // ------------------------------------------------------------------------
     // CHART
-    rs->var_local       = rrdvar_create_and_index("local",  &st->rrdvar_root_index, rs->variable, rs->type, rs->value);
+    rs->var_local       = rrdvar_create_and_index("local",  &st->rrdvar_root_index, rs->variable, rs->type, options, rs->value);
 
     // ------------------------------------------------------------------------
     // FAMILY
-    rs->var_family      = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_fullid,   rs->type, rs->value);
-    rs->var_family_name = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_fullname, rs->type, rs->value);
+    rs->var_family      = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_fullid,   rs->type, options, rs->value);
+    rs->var_family_name = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_fullname, rs->type, options, rs->value);
 
     // ------------------------------------------------------------------------
     // HOST
-    rs->var_host        = rrdvar_create_and_index("host",   &host->rrdvar_root_index, rs->key_fullid,   rs->type, rs->value);
-    rs->var_host_name   = rrdvar_create_and_index("host",   &host->rrdvar_root_index, rs->key_fullname, rs->type, rs->value);
+    rs->var_host        = rrdvar_create_and_index("host",   &host->rrdvar_root_index, rs->key_fullid,   rs->type, options, rs->value);
+    rs->var_host_name   = rrdvar_create_and_index("host",   &host->rrdvar_root_index, rs->key_fullname, rs->type, options, rs->value);
 }
 
 RRDSETVAR *rrdsetvar_create(RRDSET *st, const char *variable, RRDVAR_TYPE type, void *value, RRDVAR_OPTIONS options) {
@@ -143,7 +149,7 @@ RRDSETVAR *rrdsetvar_custom_chart_variable_create(RRDSET *st, const char *name)
     for(rs = st->variables; rs ; rs = rs->next) {
         if(hash == rs->hash && strcmp(n, rs->variable) == 0) {
             rrdset_unlock(st);
-            if(rs->options & RRDVAR_OPTION_ALLOCATED) {
+            if(rs->options & RRDVAR_OPTION_CUSTOM_CHART_VAR) {
                 free(n);
                 return rs;
             }
@@ -160,16 +166,16 @@ RRDSETVAR *rrdsetvar_custom_chart_variable_create(RRDSET *st, const char *name)
     calculated_number *v = mallocz(sizeof(calculated_number));
     *v = NAN;
 
-    rs = rrdsetvar_create(st, n, RRDVAR_TYPE_CALCULATED, v, RRDVAR_OPTION_ALLOCATED);
+    rs = rrdsetvar_create(st, n, RRDVAR_TYPE_CALCULATED, v, RRDVAR_OPTION_ALLOCATED|RRDVAR_OPTION_CUSTOM_CHART_VAR);
     rrdset_unlock(st);
 
-    free(n);
+    freez(n);
     return rs;
 }
 
 void rrdsetvar_custom_chart_variable_set(RRDSETVAR *rs, calculated_number value) {
-    if(unlikely(!(rs->options & RRDVAR_OPTION_ALLOCATED))) {
-        error("RRDSETVAR: requested to set variable '%s' of chart '%s' on host '%s' to value " CALCULATED_NUMBER_FORMAT " but the variable is not a custom one.", rs->variable, rs->rrdset->id, rs->rrdset->rrdhost->hostname, value);
+    if(rs->type != RRDVAR_TYPE_CALCULATED || !(rs->options & RRDVAR_OPTION_CUSTOM_CHART_VAR) || !(rs->options & RRDVAR_OPTION_ALLOCATED)) {
+        error("RRDSETVAR: requested to set variable '%s' of chart '%s' on host '%s' to value " CALCULATED_NUMBER_FORMAT " but the variable is not a custom chart one.", rs->variable, rs->rrdset->id, rs->rrdset->rrdhost->hostname, value);
     }
     else {
         calculated_number *v = rs->value;
@@ -177,7 +183,7 @@ void rrdsetvar_custom_chart_variable_set(RRDSETVAR *rs, calculated_number value)
             *v = value;
 
             // mark the chart to be sent upstream
-            rrdset_flag_clear(rs->rrdset, RRDSET_FLAG_EXPOSED_UPSTREAM);
+            rrdset_flag_clear(rs->rrdset, RRDSET_FLAG_UPSTREAM_EXPOSED);
         }
     }
 }
diff --git a/database/rrdsetvar.h b/database/rrdsetvar.h
new file mode 100644
index 000000000..34a26d2f0
--- /dev/null
+++ b/database/rrdsetvar.h
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_RRDSETVAR_H
+#define NETDATA_RRDSETVAR_H 1
+
+#include "rrd.h"
+
+// variables linked to charts
+// We link variables to point to the values that are already
+// calculated / processed by the normal data collection process
+// This means, there will be no speed penalty for using
+// these variables
+
+struct rrdsetvar {
+    char *variable;                 // variable name
+    uint32_t hash;                  // variable name hash
+
+    char *key_fullid;               // chart type.chart id.variable
+    char *key_fullname;             // chart type.chart name.variable
+
+    RRDVAR_TYPE type;
+    void *value;
+
+    RRDVAR_OPTIONS options;
+
+    RRDVAR *var_local;
+    RRDVAR *var_family;
+    RRDVAR *var_host;
+    RRDVAR *var_family_name;
+    RRDVAR *var_host_name;
+
+    struct rrdset *rrdset;
+
+    struct rrdsetvar *next;
+};
+
+extern RRDSETVAR *rrdsetvar_custom_chart_variable_create(RRDSET *st, const char *name);
+extern void rrdsetvar_custom_chart_variable_set(RRDSETVAR *rv, calculated_number value);
+
+extern void rrdsetvar_rename_all(RRDSET *st);
+extern RRDSETVAR *rrdsetvar_create(RRDSET *st, const char *variable, RRDVAR_TYPE type, void *value, RRDVAR_OPTIONS options);
+extern void rrdsetvar_free(RRDSETVAR *rs);
+
+#endif //NETDATA_RRDSETVAR_H
diff --git a/src/rrdvar.c b/database/rrdvar.c
index 6936c36f1..951a38cac 100644
--- a/src/rrdvar.c
+++ b/database/rrdvar.c
@@ -1,5 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #define NETDATA_HEALTH_INTERNALS
-#include "common.h"
+#include "rrd.h"
 
 // ----------------------------------------------------------------------------
 // RRDVAR management
@@ -59,14 +61,14 @@ inline void rrdvar_free(RRDHOST *host, avl_tree_lock *tree, RRDVAR *rv) {
             error("RRDVAR: Attempted to delete variable '%s' from host '%s', but it is not found.", rv->name, host->hostname);
     }
 
-    if(rv->type == RRDVAR_TYPE_CALCULATED_ALLOCATED)
+    if(rv->options & RRDVAR_OPTION_ALLOCATED)
         freez(rv->value);
 
     freez(rv->name);
     freez(rv);
 }
 
-inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, RRDVAR_TYPE type, void *value) {
+inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, RRDVAR_TYPE type, RRDVAR_OPTIONS options, void *value) {
     char *variable = strdupz(name);
     rrdvar_fix_name(variable);
     uint32_t hash = simple_hash(variable);
@@ -79,7 +81,9 @@ inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, c
         rv->name = variable;
         rv->hash = hash;
         rv->type = type;
+        rv->options = options;
         rv->value = value;
+        rv->last_updated = now_realtime_sec();
 
         RRDVAR *ret = rrdvar_index_add(tree, rv);
         if(unlikely(ret != rv)) {
@@ -106,7 +110,7 @@ inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, c
 }
 
 void rrdvar_free_remaining_variables(RRDHOST *host, avl_tree_lock *tree_lock) {
-    // FIXME: this is not bullet proof - avl should support some means to destroy it
+    // This is not bullet proof - avl should support some means to destroy it
     // with a callback for each item already in the index
 
     RRDVAR *rv, *last = NULL;
@@ -123,7 +127,7 @@ void rrdvar_free_remaining_variables(RRDHOST *host, avl_tree_lock *tree_lock) {
 // ----------------------------------------------------------------------------
 // CUSTOM HOST VARIABLES
 
-inline int rrdvar_callback_for_all_host_variables(RRDHOST *host, int (*callback)(void *rrdvar, void *data), void *data) {
+inline int rrdvar_callback_for_all_host_variables(RRDHOST *host, int (*callback)(void * /*rrdvar*/, void * /*data*/), void *data) {
     return avl_traverse_lock(&host->rrdvar_root_index, callback, data);
 }
 
@@ -131,7 +135,7 @@ static RRDVAR *rrdvar_custom_variable_create(const char *scope, avl_tree_lock *t
     calculated_number *v = callocz(1, sizeof(calculated_number));
     *v = NAN;
 
-    RRDVAR *rv = rrdvar_create_and_index(scope, tree_lock, name, RRDVAR_TYPE_CALCULATED_ALLOCATED, v);
+    RRDVAR *rv = rrdvar_create_and_index(scope, tree_lock, name, RRDVAR_TYPE_CALCULATED, RRDVAR_OPTION_CUSTOM_HOST_VAR|RRDVAR_OPTION_ALLOCATED, v);
     if(unlikely(!rv)) {
         free(v);
         debug(D_VARIABLES, "Requested variable '%s' already exists - possibly 2 plugins are updating it at the same time.", name);
@@ -140,6 +144,7 @@ static RRDVAR *rrdvar_custom_variable_create(const char *scope, avl_tree_lock *t
         rrdvar_fix_name(variable);
         uint32_t hash = simple_hash(variable);
 
+        // find the existing one to return it
         rv = rrdvar_index_find(tree_lock, variable, hash);
 
         freez(variable);
@@ -153,25 +158,30 @@ RRDVAR *rrdvar_custom_host_variable_create(RRDHOST *host, const char *name) {
 }
 
 void rrdvar_custom_host_variable_set(RRDHOST *host, RRDVAR *rv, calculated_number value) {
-    if(rv->type != RRDVAR_TYPE_CALCULATED_ALLOCATED)
+    if(rv->type != RRDVAR_TYPE_CALCULATED || !(rv->options & RRDVAR_OPTION_CUSTOM_HOST_VAR) || !(rv->options & RRDVAR_OPTION_ALLOCATED))
         error("requested to set variable '%s' to value " CALCULATED_NUMBER_FORMAT " but the variable is not a custom one.", rv->name, value);
     else {
         calculated_number *v = rv->value;
         if(*v != value) {
             *v = value;
 
+            rv->last_updated = now_realtime_sec();
+
             // if the host is streaming, send this variable upstream immediately
             rrdpush_sender_send_this_host_variable_now(host, rv);
         }
     }
 }
 
+int foreach_host_variable_callback(RRDHOST *host, int (*callback)(RRDVAR * /*rv*/, void * /*data*/), void *data) {
+    return avl_traverse_lock(&host->rrdvar_root_index, (int (*)(void *, void *))callback, data);
+}
+
 // ----------------------------------------------------------------------------
 // RRDVAR lookup
 
-static calculated_number rrdvar2number(RRDVAR *rv) {
+calculated_number rrdvar2number(RRDVAR *rv) {
     switch(rv->type) {
-        case RRDVAR_TYPE_CALCULATED_ALLOCATED:
         case RRDVAR_TYPE_CALCULATED: {
             calculated_number *n = (calculated_number *)rv->value;
             return *n;
diff --git a/database/rrdvar.h b/database/rrdvar.h
new file mode 100644
index 000000000..6d1461b2a
--- /dev/null
+++ b/database/rrdvar.h
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_RRDVAR_H
+#define NETDATA_RRDVAR_H 1
+
+#include "libnetdata/libnetdata.h"
+
+extern int rrdvar_compare(void *a, void *b);
+
+typedef enum rrdvar_type {
+    RRDVAR_TYPE_CALCULATED              = 1,
+    RRDVAR_TYPE_TIME_T                  = 2,
+    RRDVAR_TYPE_COLLECTED               = 3,
+    RRDVAR_TYPE_TOTAL                   = 4,
+    RRDVAR_TYPE_INT                     = 5
+} RRDVAR_TYPE;
+
+typedef enum rrdvar_options {
+    RRDVAR_OPTION_DEFAULT                    = 0,
+    RRDVAR_OPTION_ALLOCATED                  = (1 << 0), // the value ptr is allocated (not a reference)
+    RRDVAR_OPTION_CUSTOM_HOST_VAR            = (1 << 1), // this is a custom host variable, not associated with a dimension
+    RRDVAR_OPTION_CUSTOM_CHART_VAR           = (1 << 2), // this is a custom chart variable, not associated with a dimension
+    RRDVAR_OPTION_RRDCALC_LOCAL_VAR          = (1 << 3), // this is a an alarm variable, attached to a chart
+    RRDVAR_OPTION_RRDCALC_FAMILY_VAR         = (1 << 4), // this is a an alarm variable, attached to a family
+    RRDVAR_OPTION_RRDCALC_HOST_CHARTID_VAR   = (1 << 5), // this is a an alarm variable, attached to the host, using the chart id
+    RRDVAR_OPTION_RRDCALC_HOST_CHARTNAME_VAR = (1 << 6), // this is a an alarm variable, attached to the host, using the chart name
+} RRDVAR_OPTIONS;
+
+// the variables as stored in the variables indexes
+// there are 3 indexes:
+// 1. at each chart   (RRDSET.rrdvar_root_index)
+// 2. at each context (RRDFAMILY.rrdvar_root_index)
+// 3. at each host    (RRDHOST.rrdvar_root_index)
+struct rrdvar {
+    avl avl;
+
+    char *name;
+    uint32_t hash;
+
+    RRDVAR_TYPE type;
+    RRDVAR_OPTIONS options;
+
+    void *value;
+
+    time_t last_updated;
+};
+
+#define RRDVAR_MAX_LENGTH 1024
+
+extern int rrdvar_fix_name(char *variable);
+
+#include "rrd.h"
+
+extern RRDVAR *rrdvar_custom_host_variable_create(RRDHOST *host, const char *name);
+extern void rrdvar_custom_host_variable_set(RRDHOST *host, RRDVAR *rv, calculated_number value);
+extern int foreach_host_variable_callback(RRDHOST *host, int (*callback)(RRDVAR *rv, void *data), void *data);
+extern void rrdvar_free_remaining_variables(RRDHOST *host, avl_tree_lock *tree_lock);
+
+extern int  rrdvar_callback_for_all_host_variables(RRDHOST *host, int (*callback)(void *rrdvar, void *data), void *data);
+
+extern calculated_number rrdvar2number(RRDVAR *rv);
+
+extern RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, RRDVAR_TYPE type, RRDVAR_OPTIONS options, void *value);
+extern void rrdvar_free(RRDHOST *host, avl_tree_lock *tree, RRDVAR *rv);
+
+#endif //NETDATA_RRDVAR_H
diff --git a/diagrams/Makefile.am b/diagrams/Makefile.am
index 420bd5246..04f99c8fd 100644
--- a/diagrams/Makefile.am
+++ b/diagrams/Makefile.am
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
 
 dist_noinst_DATA = \
diff --git a/diagrams/Makefile.in b/diagrams/Makefile.in
index 46fbd54b5..5f75902de 100644
--- a/diagrams/Makefile.in
+++ b/diagrams/Makefile.in
@@ -83,14 +83,16 @@ subdir = diagrams
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(dist_noinst_SCRIPTS) $(dist_noinst_DATA)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -217,6 +219,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -238,6 +241,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
@@ -264,6 +268,8 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 varlibdir = @varlibdir@
 webdir = @webdir@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 dist_noinst_DATA = \
 	config.puml \
diff --git a/diagrams/build.sh b/diagrams/build.sh
index 53f0ea7ab..9b3963e58 100755
--- a/diagrams/build.sh
+++ b/diagrams/build.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 path=$(dirname "$0")
 cd "${path}" || exit 1
diff --git a/diagrams/netdata-overview.xml b/diagrams/netdata-overview.xml
index 13c4320e8..7f8008542 100644
--- a/diagrams/netdata-overview.xml
+++ b/diagrams/netdata-overview.xml
@@ -1 +1 @@
-<mxfile userAgent="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36" version="8.5.0" editor="www.draw.io" type="github"><diagram id="319b92f5-ce0c-3638-1d72-e7e1d323a6f9" 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</diagram></mxfile>
\ No newline at end of file
diff --git a/docker-build.sh b/docker-build.sh
deleted file mode 100644
index fd056c390..000000000
--- a/docker-build.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/bin/bash
-
-# author  : titpetric
-# original: https://github.com/titpetric/netdata
-
-set -e
-DEBIAN_FRONTEND=noninteractive
-
-# some mirrors have issues, i skipped httpredir in favor of an eu mirror
-
-# install dependencies for build
-
-apt-get -qq update
-apt-get -y install zlib1g-dev uuid-dev libmnl-dev gcc make curl git autoconf autogen automake pkg-config netcat-openbsd jq
-apt-get -y install autoconf-archive lm-sensors nodejs python python-mysqldb python-yaml
-
-# use the provided installer
-
-./netdata-installer.sh --dont-wait --dont-start-it
-
-# remove build dependencies
-
-cd /
-rm -rf /netdata.git
-
-dpkg -P zlib1g-dev uuid-dev libmnl-dev gcc make git autoconf autogen automake pkg-config
-apt-get -y autoremove
-apt-get clean
-rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
-
-# symlink access log and error log to stdout/stderr
-
-ln -sf /dev/stdout /var/log/netdata/access.log
-ln -sf /dev/stdout /var/log/netdata/debug.log
-ln -sf /dev/stderr /var/log/netdata/error.log
diff --git a/docker/Dockerfile b/docker/Dockerfile
new file mode 100644
index 000000000..4362a273e
--- /dev/null
+++ b/docker/Dockerfile
@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# author  : paulfantom
+
+# Cross-arch building is achieved by specifying ARCH as a build parameter with `--build-arg` option.
+# It is automated in `build.sh` script
+ARG ARCH=amd64-v3.8
+FROM multiarch/alpine:${ARCH} as builder
+
+# Install prerequisites
+RUN apk --no-cache add alpine-sdk \
+                       autoconf \
+                       automake \
+                       bash \
+                       build-base \
+                       curl \
+                       jq \
+                       libmnl-dev \
+                       libuuid \
+                       lm_sensors \
+                       netcat-openbsd \
+                       nodejs \
+                       pkgconfig \
+                       py-mysqldb \
+                       py-psycopg2 \
+                       py-yaml \
+                       python \
+                       util-linux-dev \
+                       zlib-dev
+
+# Copy source
+COPY . /opt/netdata.git
+WORKDIR /opt/netdata.git
+
+# Install from source
+RUN chmod +x netdata-installer.sh && \
+    sync && sleep 1 && \
+    ./netdata-installer.sh --dont-wait --dont-start-it
+
+# files to one directory
+RUN mkdir -p /app/usr/sbin/ \
+             /app/usr/share \
+             /app/usr/libexec \
+             /app/usr/lib \
+             /app/var/cache \
+             /app/var/lib \
+             /app/etc && \
+    mv /usr/share/netdata   /app/usr/share/ && \
+    mv /usr/libexec/netdata /app/usr/libexec/ && \
+    mv /usr/lib/netdata     /app/usr/lib/ && \
+    mv /var/cache/netdata   /app/var/cache/ && \
+    mv /var/lib/netdata     /app/var/lib/ && \
+    mv /etc/netdata         /app/etc/ && \
+    mv /usr/sbin/netdata    /app/usr/sbin/ && \
+    mv docker/run.sh        /app/usr/sbin/ && \
+    chmod +x /app/usr/sbin/run.sh
+
+#####################################################################
+ARG ARCH
+FROM multiarch/alpine:${ARCH}
+
+# Reinstall some prerequisites
+RUN apk --no-cache add curl \
+                       fping \
+                       jq \
+                       libuuid \
+                       lm_sensors \
+                       netcat-openbsd \
+                       nodejs \
+                       py-mysqldb \
+                       py-psycopg2 \
+                       py-yaml \
+                       python
+
+# Copy files over
+COPY --from=builder /app /
+
+# Configure system
+ARG NETDATA_UID=201
+ARG NETDATA_GID=201
+RUN \
+    # fping from alpine apk is on a different location. Moving it.
+    mv /usr/sbin/fping /usr/local/bin/fping && \
+    chmod 4755 /usr/local/bin/fping && \
+    mkdir -p /var/log/netdata && \
+    # Add netdata user
+    addgroup -g ${NETDATA_GID} -S netdata && \
+    adduser -S -H -s /usr/sbin/nologin -u ${NETDATA_GID} -h /etc/netdata -G netdata netdata && \
+    # Apply the permissions as described in
+    # https://github.com/netdata/netdata/wiki/netdata-security#netdata-directories
+    chown -R root:netdata /etc/netdata && \
+    chown -R netdata:netdata /var/cache/netdata /var/lib/netdata /usr/share/netdata && \
+    chown -R root:netdata /usr/lib/netdata && \
+    chown -R root:netdata /usr/libexec/netdata/plugins.d/apps.plugin /usr/libexec/netdata/plugins.d/cgroup-network && \
+    chmod 4750 /usr/libexec/netdata/plugins.d/cgroup-network /usr/libexec/netdata/plugins.d/apps.plugin && \
+    chmod 0750 /var/lib/netdata /var/cache/netdata && \
+    # Link log files to stdout
+    ln -sf /dev/stdout /var/log/netdata/access.log && \
+    ln -sf /dev/stdout /var/log/netdata/debug.log && \
+    ln -sf /dev/stderr /var/log/netdata/error.log
+
+ENV NETDATA_PORT 19999
+EXPOSE $NETDATA_PORT
+
+ENTRYPOINT ["/usr/sbin/run.sh"]
diff --git a/docker/build.sh b/docker/build.sh
new file mode 100755
index 000000000..908468d39
--- /dev/null
+++ b/docker/build.sh
@@ -0,0 +1,83 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0-or-later
+# Author  : Pawel Krupa (paulfantom)
+# Cross-arch docker build helper script
+# Needs docker in version >18.02 due to usage of manifests
+
+set -e
+
+if [ "$1" == "" ]; then
+    VERSION=$(git tag --points-at)
+else
+    VERSION="$1"
+fi
+if [ "${VERSION}" == "" ]; then
+    VERSION="latest"
+fi
+
+REPOSITORY="${REPOSITORY:-netdata}"
+
+echo "Building $VERSION of netdata container"
+
+declare -A ARCH_MAP
+ARCH_MAP=( ["i386"]="386" ["amd64"]="amd64" ["armhf"]="arm" ["aarch64"]="arm64")
+
+docker run --rm --privileged multiarch/qemu-user-static:register --reset
+
+if [ -f Dockerfile ]; then
+    cd ../ || exit 1
+fi
+
+# Build images using multi-arch Dockerfile.
+for ARCH in i386 armhf aarch64 amd64; do
+     docker build --build-arg ARCH="${ARCH}-v3.8" --tag "${REPOSITORY}:${VERSION}-${ARCH}" --file docker/Dockerfile ./ &
+done
+wait
+
+# Create temporary docker CLI config with experimental features enabled (manifests v2 need it)
+mkdir -p /tmp/docker
+echo '{"experimental":"enabled"}' > /tmp/docker/config.json
+
+# Login to docker hub to allow for futher operations
+if [ -z ${DOCKER_USERNAME+x} ] || [ -z ${DOCKER_PASSWORD+x} ]; then
+    echo "No docker hub username or password specified. Exiting without pushing images to registry"
+    exit 1
+fi
+echo "$DOCKER_PASSWORD" | docker --config /tmp/docker login -u "$DOCKER_USERNAME" --password-stdin
+
+# Push images to registry
+for ARCH in amd64 i386 armhf aarch64; do
+    docker --config /tmp/docker push "${REPOSITORY}:${VERSION}-${ARCH}" &
+done
+wait
+
+# Recreate docker manifest
+docker --config /tmp/docker manifest create --amend \
+                       "${REPOSITORY}:${VERSION}" \
+                       "${REPOSITORY}:${VERSION}-i386" \
+                       "${REPOSITORY}:${VERSION}-armhf" \
+                       "${REPOSITORY}:${VERSION}-aarch64" \
+                       "${REPOSITORY}:${VERSION}-amd64"
+
+# Annotate manifest with CPU architecture information
+for ARCH in i386 armhf aarch64 amd64; do
+     docker --config /tmp/docker manifest annotate "${REPOSITORY}:${VERSION}" "${REPOSITORY}:${VERSION}-${ARCH}" --os linux --arch "${ARCH_MAP[$ARCH]}"
+done
+
+# Push manifest to docker hub
+docker --config /tmp/docker manifest push -p "${REPOSITORY}:${VERSION}"
+
+# Show current manifest (debugging purpose only)
+docker --config /tmp/docker manifest inspect "${REPOSITORY}:${VERSION}"
+
+# Push netdata images to firehol organization
+# TODO: Remove it after we decide to deprecate firehol/netdata docker repo
+if [ "$REPOSITORY" != "netdata" ]; then
+    echo "$OLD_DOCKER_PASSWORD" | docker login -u "$OLD_DOCKER_USERNAME" --password-stdin   
+    for ARCH in amd64 i386 armhf aarch64; do
+        docker tag "${REPOSITORY}:${VERSION}-${ARCH}" "firehol/netdata:${ARCH}"
+        docker push "firehol/netdata:${ARCH}"
+    done
+    docker tag "${REPOSITORY}:${VERSION}-amd64" "firehol/netdata:${VERSION}"
+    docker push "firehol/netdata:${VERSION}"
+fi
diff --git a/docker/run.sh b/docker/run.sh
new file mode 100644
index 000000000..b4cf52c7a
--- /dev/null
+++ b/docker/run.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+#set -e
+
+if [ ${PGID+x} ]; then
+  echo "Adding user netdata to group with id ${PGID}"
+  addgroup -g "${PGID}" -S hostgroup 2>/dev/null
+  sed -i "s/${PGID}:$/${PGID}:netdata/g" /etc/group
+fi
+
+exec /usr/sbin/netdata -u netdata -D -s /host -p "${NETDATA_PORT}" "$@"
diff --git a/health/Makefile.am b/health/Makefile.am
new file mode 100644
index 000000000..829a41b3b
--- /dev/null
+++ b/health/Makefile.am
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    notifications \
+    $(NULL)
+
+CLEANFILES = \
+	$(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+userhealthconfigdir=$(configdir)/health.d
+dist_userhealthconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    $(NULL)
+
+healthconfigdir=$(libconfigdir)/health.d
+dist_healthconfig_DATA = \
+    $(top_srcdir)/installer/.keep \
+    health.d/adaptec_raid.conf \
+    health.d/apache.conf \
+    health.d/apcupsd.conf \
+    health.d/backend.conf \
+    health.d/bcache.conf \
+    health.d/beanstalkd.conf \
+    health.d/bind_rndc.conf \
+    health.d/boinc.conf \
+    health.d/btrfs.conf \
+    health.d/ceph.conf \
+    health.d/cpu.conf \
+    health.d/couchdb.conf \
+    health.d/disks.conf \
+    health.d/dockerd.conf \
+    health.d/elasticsearch.conf \
+    health.d/entropy.conf \
+    health.d/fping.conf \
+    health.d/fronius.conf \
+    health.d/haproxy.conf \
+    health.d/httpcheck.conf \
+    health.d/ipc.conf \
+    health.d/ipfs.conf \
+    health.d/ipmi.conf \
+    health.d/isc_dhcpd.conf \
+    health.d/lighttpd.conf \
+    health.d/linux_power_supply.conf \
+    health.d/load.conf \
+    health.d/mdstat.conf \
+    health.d/megacli.conf \
+    health.d/memcached.conf \
+    health.d/memory.conf \
+    health.d/mongodb.conf \
+    health.d/mysql.conf \
+    health.d/named.conf \
+    health.d/net.conf \
+    health.d/netfilter.conf \
+    health.d/nginx.conf \
+    health.d/nginx_plus.conf \
+    health.d/portcheck.conf \
+    health.d/postgres.conf \
+    health.d/qos.conf \
+    health.d/ram.conf \
+    health.d/redis.conf \
+    health.d/retroshare.conf \
+    health.d/softnet.conf \
+    health.d/squid.conf \
+    health.d/stiebeleltron.conf \
+    health.d/swap.conf \
+    health.d/tcp_conn.conf \
+    health.d/tcp_listen.conf \
+    health.d/tcp_mem.conf \
+    health.d/tcp_orphans.conf \
+    health.d/tcp_resets.conf \
+    health.d/udp_errors.conf \
+    health.d/varnish.conf \
+    health.d/web_log.conf \
+    health.d/zfs.conf \
+    $(NULL)
diff --git a/health/Makefile.in b/health/Makefile.in
new file mode 100644
index 000000000..811f7f239
--- /dev/null
+++ b/health/Makefile.in
@@ -0,0 +1,800 @@
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+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
+# SPDX-License-Identifier: GPL-3.0-or-later
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+	README.md \
+	$(NULL)
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+    $(NULL)
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+    health.d/adaptec_raid.conf \
+    health.d/apache.conf \
+    health.d/apcupsd.conf \
+    health.d/backend.conf \
+    health.d/bcache.conf \
+    health.d/beanstalkd.conf \
+    health.d/bind_rndc.conf \
+    health.d/boinc.conf \
+    health.d/btrfs.conf \
+    health.d/ceph.conf \
+    health.d/cpu.conf \
+    health.d/couchdb.conf \
+    health.d/disks.conf \
+    health.d/dockerd.conf \
+    health.d/elasticsearch.conf \
+    health.d/entropy.conf \
+    health.d/fping.conf \
+    health.d/fronius.conf \
+    health.d/haproxy.conf \
+    health.d/httpcheck.conf \
+    health.d/ipc.conf \
+    health.d/ipfs.conf \
+    health.d/ipmi.conf \
+    health.d/isc_dhcpd.conf \
+    health.d/lighttpd.conf \
+    health.d/linux_power_supply.conf \
+    health.d/load.conf \
+    health.d/mdstat.conf \
+    health.d/megacli.conf \
+    health.d/memcached.conf \
+    health.d/memory.conf \
+    health.d/mongodb.conf \
+    health.d/mysql.conf \
+    health.d/named.conf \
+    health.d/net.conf \
+    health.d/netfilter.conf \
+    health.d/nginx.conf \
+    health.d/nginx_plus.conf \
+    health.d/portcheck.conf \
+    health.d/postgres.conf \
+    health.d/qos.conf \
+    health.d/ram.conf \
+    health.d/redis.conf \
+    health.d/retroshare.conf \
+    health.d/softnet.conf \
+    health.d/squid.conf \
+    health.d/stiebeleltron.conf \
+    health.d/swap.conf \
+    health.d/tcp_conn.conf \
+    health.d/tcp_listen.conf \
+    health.d/tcp_mem.conf \
+    health.d/tcp_orphans.conf \
+    health.d/tcp_resets.conf \
+    health.d/udp_errors.conf \
+    health.d/varnish.conf \
+    health.d/web_log.conf \
+    health.d/zfs.conf \
+    $(NULL)
+
+all: all-recursive
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu health/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu health/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
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+	@$(NORMAL_INSTALL)
+	@list='$(dist_healthconfig_DATA)'; test -n "$(healthconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(healthconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(healthconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(healthconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(healthconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_healthconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_healthconfig_DATA)'; test -n "$(healthconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(healthconfigdir)'; $(am__uninstall_files_from_dir)
+install-dist_userhealthconfigDATA: $(dist_userhealthconfig_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_userhealthconfig_DATA)'; test -n "$(userhealthconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(userhealthconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(userhealthconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(userhealthconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(userhealthconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_userhealthconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_userhealthconfig_DATA)'; test -n "$(userhealthconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(userhealthconfigdir)'; $(am__uninstall_files_from_dir)
+
+# This directory's subdirectories are mostly independent; you can cd
+# into them and run 'make' without going through this Makefile.
+# To change the values of 'make' variables: instead of editing Makefiles,
+# (1) if the variable is set in 'config.status', edit 'config.status'
+#     (which will cause the Makefiles to be regenerated when you run 'make');
+# (2) otherwise, pass the desired values on the 'make' command line.
+$(am__recursive_targets):
+	@fail=; \
+	if $(am__make_keepgoing); then \
+	  failcom='fail=yes'; \
+	else \
+	  failcom='exit 1'; \
+	fi; \
+	dot_seen=no; \
+	target=`echo $@ | sed s/-recursive//`; \
+	case "$@" in \
+	  distclean-* | maintainer-clean-*) list='$(DIST_SUBDIRS)' ;; \
+	  *) list='$(SUBDIRS)' ;; \
+	esac; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
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+	  ($(am__cd) $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
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+	if test "$$dot_seen" = "no"; then \
+	  $(MAKE) $(AM_MAKEFLAGS) "$$target-am" || exit 1; \
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+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
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+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	set x; \
+	here=`pwd`; \
+	if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \
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+	  empty_fix=.; \
+	else \
+	  include_option=--include; \
+	  empty_fix=; \
+	fi; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
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+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
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+	fi
+ctags: ctags-recursive
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+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
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+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-recursive
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
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+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
+	      || $(MKDIR_P) "$(distdir)/$$subdir" \
+	      || exit 1; \
+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-recursive
+all-am: Makefile $(DATA)
+installdirs: installdirs-recursive
+installdirs-am:
+	for dir in "$(DESTDIR)$(healthconfigdir)" "$(DESTDIR)$(userhealthconfigdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-recursive
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info: info-recursive
+
+info-am:
+
+install-data-am: install-dist_healthconfigDATA \
+	install-dist_userhealthconfigDATA
+
+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am: uninstall-dist_healthconfigDATA \
+	uninstall-dist_userhealthconfigDATA
+
+.MAKE: $(am__recursive_targets) install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-am clean clean-generic cscopelist-am ctags ctags-am \
+	distclean distclean-generic distclean-tags distdir dvi dvi-am \
+	html html-am info info-am install install-am install-data \
+	install-data-am install-dist_healthconfigDATA \
+	install-dist_userhealthconfigDATA install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs installdirs-am \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-generic pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am uninstall-dist_healthconfigDATA \
+	uninstall-dist_userhealthconfigDATA
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/health/README.md b/health/README.md
new file mode 100644
index 000000000..597bd3c32
--- /dev/null
+++ b/health/README.md
@@ -0,0 +1,657 @@
+
+# Health monitoring
+
+Each netdata node runs an independent thread evaluating health monitoring checks.
+This thread has lock free access to the database, so that it can operate as a watchdog.
+
+Health checks (alarms) are attached to netdata charts, allowing netdata to automatically
+activate an alarm as soon as a chart is created. This is very important for
+netdata, since many charts are dynamically created during runtime (for example, the
+chart tracking network interface packet drops, is automatically created on the first
+packet dropped).
+
+Netdata also supports alarm **templates**, so that an alarm can be attached to all
+the charts of the same context (i.e. all network interfaces, or all disks, or all mysql servers, etc.)
+
+Each alarm can execute a single query to the database using statistical algorithms against past data,
+but alarms can be combined. So, if you need 2 queries in the database, you can combine
+2 alarms together (both will run a query to the database, and the results can be combined).
+
+Each alarm has unlimited access to all the metrics collected. So, a single alarm can
+use expressions combining the latest value of any number of metrics.
+
+## Health configuration reference
+
+Stock netdata health configuration is in `/usr/lib/netdata/conf.d/health.d`.
+These files can be overwritten by copying them and editing them in `/etc/netdata/health.d`
+(run `/etc/netdata/edit-config` to edit them).
+
+In `/etc/netdata/health.d` you can also put any number of files (in any number of sub-directories)
+with a suffix `.conf` to have them processed by netdata.
+
+Health configuration can be reloaded at any time, without restarting netdata.
+Just send netdata the SIGUSR2 signal, like this:
+
+```sh
+killall -USR2 netdata
+```
+
+### Entities in the health files
+
+There are 2 entities:
+
+1. **alarms**, which are attached to specific charts, and 
+
+2. **templates**, which define rules that should be applied to all charts having a
+   specific `context`. You can use this feature to apply **alarms** to all disks,
+   all network interfaces, all mysql databases, all nginx web servers, etc.
+
+Both of these entities have exactly the same format and feature set.
+The only difference is the label `alarm` or `template`.
+
+netdata supports overriding **templates** with **alarms**.
+For example, when a template is defined for a set of charts, an alarm with exactly the
+same name attached to the same chart the template matches, will have higher precedence
+(i.e. netdata will use the alarm on this chart and prevent the template from being applied
+to it).
+
+### The format
+
+The following lines are parsed.
+
+#### alarm line `alarm` or `template`
+
+This line starts an alarm or alarm template.
+
+```
+alarm: NAME
+```
+
+or 
+
+```
+template: NAME
+```
+
+This line has to be first on each alarm or template.
+`NAME` is anything you would like to name it (the only symbols allowed are `.` and `_`).
+
+---
+
+#### alarm line `on`
+
+This line defines the data the alarm should be attached to.
+
+For alarms:
+
+```
+on: CHART
+```
+
+For `CHART` you can use a chart `id` or `name` of the chart, as shown on the dashboard.
+
+For alarm templates:
+
+```
+on: CONTEXT
+```
+
+`CONTEXT` is the template of a chart. For example the charts `mysql_local.net` and
+`mysql_server2.net` have the same context: `mysql.net`. So, you can use this to apply
+alarms to all `mysql.net` charts.
+
+To find the `CONTEXT` of a chart hover over its date, above the legend. A tooltip will
+appear with this format `plugin:nodule, context`. For example, the bandwidth chart of
+a network interface says:
+
+```
+proc:/proc/dev/dev, net.net
+```
+
+So, `plugin = proc`, `module = /proc/net/dev` and `context = net.net`.
+
+---
+
+#### alarm line `os`
+
+This alarm or template will be used only if the O/S of the host loading it, matches this
+pattern list. The value is a space separated list of simple patterns (use `*` as wildcard,
+prefix with `!` for a negative match, order is important).
+
+```
+os: linux freebsd macos
+```
+
+---
+
+#### alarm line `hosts`
+
+This alarm or template will be used only if the hostname of the host loading it, matches
+this pattern list. The value is a space separated list of simple patterns (use `*` as wildcard,
+prefix with `!` for a negative match, order is important).
+
+```
+hosts: server1 server2 database* !redis3 redis*
+```
+
+The above says: use this alarm on all hosts named `server1`, `server2`, `database*`, and
+all `redis*` except `redis3`.
+
+This is useful when you centralize metrics from multiple hosts, to one netdata.
+
+---
+
+#### alarm line `families`
+
+This line is only used in alarm templates. It filters the charts. So, if you need to create
+an alarm template for a few of a kind of chart (a few of your disks, or a few of your network
+interfaces, or a few your mysql servers, etc), you can create an alarm template that would
+normally be applied to all of them, and filter them by family.
+
+The format is:
+
+```
+families: SIMPLE PATTERN LIST
+```
+
+Simple patterns list is a lists of space separated patterns. Use ` * ` as wildcard and ` ! `
+for a negative match. Processing is left to right, and on the first hit (positive or negative),
+processing stops.
+
+So. `families: *` means, match anything, while `families: !bad*pattern* *` means anything
+except `bad*pattern*` (where `*` is a wildcard to match any sequence of characters).
+
+The family of a chart is usually the submenu of the netdata dashboard it appears.
+
+---
+
+#### alarm line `lookup`
+
+This lines makes a database lookup to find a value. This result of this lookup is available as `$this`.
+
+The format is:
+  
+```
+lookup: METHOD AFTER [at BEFORE] [every DURATION] [OPTIONS] [of DIMENSIONS]
+```
+
+Everything is the same with [badges](../web/api/badges/). In short:
+
+- `METHOD` is one of `average`, `min`, `max`, `sum`, `incremental-sum`.
+   This is required.
+
+- `AFTER` is a relative number of seconds, but it also accepts a single letter for changing
+   the units, like `-1s` = 1 second in the past, `-1m` = 1 minute in the past, `-1h` = 1 hour
+   in the past, `-1d` = 1 day in the past. You need a negative number (i.e. how far in the past
+   to look for the value). **This is required**.
+
+- `at BEFORE` is by default 0 and is not required. Using this you can define the end of the
+   lookup. So data will be evaluated between `AFTER` and `BEFORE`.
+
+- `every DURATION` sets the updated frequency of the lookup (supports single letter units as
+   above too).
+
+- `OPTIONS` is a space separated list of `percentage`, `absolute`, `min2max`, `unaligned`,
+   `match-ids`, `match-names`. Check the badges documentation for more info.
+
+- `of DIMENSIONS` is optional and has to be the last parameter. Dimensions have to be separated
+   by `,` or `|`. The space characters found in dimensions will be kept as-is (a few dimensions
+   have spaces in their names). This accepts netdata simple patterns and the `match-ids` and
+   `match-names` options affect the searches for dimensions.
+
+The result of the lookup will be available as `$this` and `$NAME` in expressions.
+The timestamps of the timeframe evaluated by the database lookup is available as variables
+`$after` and `$before` (both are unix timestamps).
+
+---
+
+#### alarm line `calc`
+
+This expression is evaluated just after the `lookup` (if any). Its purpose is to apply some
+calculation before using the value looked up from the db.
+
+You can also have an expression without a lookup, using other variables that are available.
+
+The result of the calculation will be available as `$this` in warning and critical expressions
+(overwriting the `lookup` one).
+
+Format:
+
+```
+calc: EXPRESSION
+```
+
+Check [Expressions](#expressions) for more information.
+
+---
+
+#### alarm line `every`
+
+Sets the update frequency of this alarm.  This is the same to the `every DURATION` given
+in the `lookup` lines.
+
+Format:
+
+```
+every: DURATION
+```
+
+`DURATION` accepts `s` for seconds, `m` is minutes, `h` for hours, `d` for days.
+
+---
+
+#### alarm lines `green` and `red`
+
+Set the green and red thresholds of a chart. Both are available as `$green` and `$red` in
+expressions. If multiple alarms define different thresholds, the ones defined by the first
+alarm will be used. These will eventually visualized on the dashboard, so only one set of
+them is allowed. If you need multiple sets of them in different alarms, use absolute numbers
+instead of `$red` and `$green`.
+
+Format:
+
+```
+green: NUMBER
+red: NUMBER
+```
+
+---
+
+#### alarm lines `warn` and `crit`
+
+These expressions should evaluate to true or false (alternatively non-zero or zero).
+They trigger the alarm. Both are optional.
+
+Format:
+
+```
+warn: EXPRESSION
+crit: EXPRESSION
+```
+Check [Expressions](#expressions) for more information.
+
+---
+
+#### alarm line `to`
+
+This will be the first parameter of the script to be executed when the alarm switches status.
+Its meaning is left up to the `exec` script.
+
+The default `exec` script, `alarm-notify.sh`, uses this field as a space separated list of roles,
+which are then consulted to find the exact recipients per notification method.
+
+Format:
+
+```
+to: ROLE1 ROLE2 ROLE3 ...
+```
+
+---
+
+#### alarm line `exec`
+
+The script that will be executed when the alarm changes status.
+
+Format:
+
+```
+exec: SCRIPT
+```
+
+The default `SCRIPT` is netdata's `alarm-notify.sh`, which supports all the notifications
+methods netdata supports, including custom hooks.
+
+---
+
+#### alarm line `delay`
+
+This is used to provide optional hysteresis settings for the notifications, to defend
+against notification floods. These settings do not affect the actual alarm - only the time
+the `exec` script is executed.
+
+Format:
+
+```
+delay: [[[up U] [down D] multiplier M] max X]
+```
+
+- `up U` defines the delay to be applied to a notification for an alarm that raised its status
+   (i.e. CLEAR to WARNING, CLEAR to CRITICAL, WARNING to CRITICAL). For example, `up 10s`, the
+   notification for this event will be sent 10 seconds after the actual event. This is used in
+   hope the alarm will get back to its previous state within the duration given. The default `U`
+   is zero.
+  
+- `down D` defines the delay to be applied to a notification for an alarm that moves to lower
+   state (i.e. CRITICAL to WARNING, CRITICAL to CLEAR, WARNING to CLEAR). For example, `down 1m`
+   will delay the notification by 1 minute. This is used to prevent notifications for flapping
+   alarms. The default `D` is zero.
+  
+- `mutliplier M` multiplies `U` and `D` when an alarm changes state, while a notification is
+   delayed. The default multiplier is `1.0`.
+  
+- `max X`  defines the maximum absolute notification delay an alarm may get. The default `X`
+   is `max(U * M, D * M)` (i.e. the max duration of `U` or `D` multiplied once with `M`).
+
+  Example:
+
+  `delay: up 10s down 15m multiplier 2 max 1h`
+
+  The time is `00:00:00` and the status of the alarm is CLEAR.
+
+  time of event|new status|delay|notification will be sent|why
+  -------------|----------|:---:|-------------------------|---
+  00:00:01 | WARNING | `up 10s` | 00:00:11 |first state switch
+  00:00:05 | CLEAR |  `down 15m x2`| 00:30:05 |the alarm changes state while a notification is delayed, so it was multiplied
+  00:00:06 | WARNING | `up 10s x2 x2` | 00:00:26 |multiplied twice
+  00:00:07|CLEAR|`down 15m x2 x2 x2`|00:45:07|multiplied 3 times.
+
+  So:
+  -  `U` and `D` are multiplied by `M` every time the alarm changes state (any state, not just
+     their matching one) and a delay is in place.
+  - All are reset to their defaults when the alarm switches state without a delay in place.
+
+---
+
+### Expressions
+
+netdata has an internal [infix expression parser](../libnetdata/eval).
+This parses expressions and creates an internal structure that allows fast execution of them.
+
+These operators are supported `+`, `-`, `*`, `/`, `<`, `<=`, `<>`, `!=`, `>`, `>=`, `&&`, `||`,
+`!`, `AND`, `OR`, `NOT`. Boolean operators result in either `1` (true) or `0` (false).
+
+The conditional evaluation operator `?` is supported too. Using this operator IF-THEN-ELSE
+conditional statements can be specified. The format is: `(condition) ? (true expression) :
+(false expression)`. So, netdata will first evaluate the `condition` and based on the result
+will either evaluate `true expression` or `false expression`.
+Example: `($this > 0) ? ($avail * 2) : ($used / 2)`.
+Nested such expressions are also supported (i.e. `true expression` and `false expression` can
+contain conditional evaluations).
+
+Expressions also support the `abs()` function.
+
+Expressions can have variables. Variables start with `$`. Check below for more information.
+
+There are two special values you can use:
+
+  - `nan`, for example `$this != nan` will check if the variable `this` is available.
+     A variable can be `nan` if the database lookup failed. All calculations (i.e. addition,
+     multiplication, etc) with a `nan` result in a `nan`.
+
+  - `inf`, for example `$this != inf` will check if `this` is not infinite. A value or
+     variable can be infinite if divided by zero. All calculations (i.e. addition,
+     multiplication, etc) with a `inf` result in a `inf`.
+
+---
+
+### Special use of the conditional operator
+
+A common (but not necessarily obvious) use of the conditional evaluation operator is
+to provide [hysteresis](https://en.wikipedia.org/wiki/Hysteresis) around the critical
+or warning thresholds.  This usage helps to avoid bogus messages resulting from small
+variations in the value when it is varying regularly but staying close to the threshold
+value, without needing to delay sending messages at all.
+
+An example of such usage from the default CPU usage alarms bundled with netdata is:
+
+```
+warn: $this > (($status >= $WARNING)  ? (75) : (85))
+crit: $this > (($status == $CRITICAL) ? (85) : (95))
+```
+
+The above say:
+* If the alarm is currently a warning, then the threshold for being considered a warning
+   is 75, otherwise it's 85.
+  
+* If the alarm is currently critical, then the threshold for being considered critical
+   is 85, otherwise it's 95.
+
+Which in turn, results in the following behavior:
+* While the value is rising, it will trigger a warning when it exceeds 85, and a critical
+   alert when it exceeds 95.
+  
+* While the value is falling, it will return to a warning state when it goes below 85,
+   and a normal state when it goes below 75.
+   
+* If the value is constantly varying between 80 and 90, then it will trigger a warning the
+   first time it goes above 85, but will remain a warning until it goes below 75 (or goes above 85).
+   
+* If the value is constantly varying between 90 and 100, then it will trigger a critical alert
+   the first time it goes above 95, but will remain a critical alert goes below 85 (at which
+   point it will return to being a warning).
+
+---
+
+### Variables
+
+netdata supports 3 new internal indexes for variables that will be used in health monitoring:
+
+  - **chart local variables**. All the dimensions of the chart are exposed as local variables.
+     All chart alarms names are exposed as variables too.
+
+     Charts also define a few special variables:
+
+     - `$last_collected_t` is the unix timestamp of the last data collection
+     - `$collected_total_raw` is the sum of all the dimensions (their last collected values)
+     - `$update_every` is the update frequency of the chart
+     - `$green` and `$red` the threshold defined in alarms (these are per chart - the charts
+        inherits them from the the first alarm that defined them)
+
+     Chart dimensions define their last calculated (i.e. interpolated) value, exactly as
+     shown on the charts, but also a variable with their name and suffix `_raw` that resolves
+     to the last collected value - as collected and another with suffix `_last_collected_t`
+     that resolves to unix timestamp the dimension was last collected (there may be dimensions
+     that fail to be collected while others continue normally).
+
+  - **family variables**. Families are used to group charts together. For example all `eth0`
+     charts, have `family = eth0`. This index includes all local variables, but if there are
+     overlapping variables, only the first are exposed.
+
+  - **host variables**. All the dimensions of all charts, including all alarms, in fullname.
+     Fullname is `CHART.VARIABLE`, where `CHART` is either the chart id or the chart name (both
+     are supported).
+
+  - **special variables*** are:
+
+     - `this`, which is resolved to the value of the current alarm.
+     
+     - `status`, which is resolved to the current status of the alarm (the current = the last
+        status, i.e. before the current database lookup and the evaluation of the `calc` line).
+        This values can be compared with `$REMOVED`, `$UNINITIALIZED`, `$UNDEFINED`, `$CLEAR`,
+        `$WARNING`, `$CRITICAL`. These values are incremental, ie. `$status > $CLEAL` works as
+        expected.
+        
+     - `now`, which is resolved to current unix timestamp.
+
+You can find all the variables that can be used for a given chart, using
+`http://your.netdata.ip:19999/api/v1/alarm_variables?chart=NAME`.
+This will dump all the indexes from the chart's perspective.
+Example: [variables for the `system.cpu` chart of the registry](https://registry.my-netdata.io/api/v1/alarm_variables?chart=system.cpu).
+
+## Alarm Statuses
+
+Alarms can have the following statuses:
+
+  - `REMOVED` - the alarm has been deleted (this happens when a SIGUSR2 is sent to netdata
+     to reload health configuration)
+     
+  - `UNINITIALIZED` - the alarm is not initialized yet
+  
+  - `UNDEFINED` - the alarm failed to be calculated (i.e. the database lookup failed,
+     a division by zero occurred, etc)
+     
+  - `CLEAR` - the alarm is not armed / raised (i.e. is OK)
+  
+  - `WARNING` - the warning expression resulted in true or non-zero
+  
+  - `CRITICAL` - the critical expression resulted in true or non-zero
+
+The external script will be called for all status changes.
+
+## Examples
+
+
+Check the **[health.d directory](health.d)** for all alarms shipped with netdata.
+
+Here are a few examples:
+
+### Example 1
+
+A simple check if an apache server is alive:
+
+```
+template: apache_last_collected_secs
+      on: apache.requests
+    calc: $now - $last_collected_t
+   every: 10s
+    warn: $this > ( 5 * $update_every)
+    crit: $this > (10 * $update_every)
+```
+
+The above checks that netdata is able to collect data from apache. In detail:
+
+```
+template: apache_last_collected_secs
+```
+
+The above defines a **template** named `apache_last_collected_secs`.
+The name is important since `$apache_last_collected_secs` resolves to the `calc` line.
+So, try to give something descriptive.
+
+```
+      on: apache.requests
+```
+
+The above applies the **template** to all charts that have `context = apache.requests`
+(i.e. all your apache servers).
+
+```
+    calc: $now - $last_collected_t
+```
+
+- `$now` is a standard variable that resolves to the current timestamp.
+
+- `$last_collected_t` is the last data collection timestamp of the chart.
+   So this calculation gives the number of seconds passed since the last data collection.
+
+```
+   every: 10s
+```
+
+The alarm will be evaluated every 10 seconds.
+
+```
+    warn: $this > ( 5 * $update_every)
+    crit: $this > (10 * $update_every)
+```
+
+If these result in non-zero or true, they trigger the alarm.
+
+- `$this` refers to the value of this alarm (i.e. the result of the `calc` line.
+   We could also use `$apache_last_collected_secs`.
+
+`$update_every` is the update frequency of the chart, in seconds.
+
+So, the warning condition checks if we have not collected data from apache for 5
+iterations and the critical condition checks for 10 iterations.
+
+### Example 2
+
+Check if any of the disks is critically low on disk space:
+
+```
+template: disk_full_percent
+      on: disk.space
+    calc: $used * 100 / ($avail + $used)
+   every: 1m
+    warn: $this > 80
+    crit: $this > 95
+```
+
+`$used` and `$avail`  are the `used` and `avail` chart dimensions as shown on the dashboard.
+
+So, the `calc` line finds the percentage of used space. `$this` resolves to this percentage.
+
+### Example 3
+
+Predict if any disk will run out of space in the near future.
+
+We do this in 2 steps:
+
+Calculate the disk fill rate:
+
+```
+    template: disk_fill_rate
+          on: disk.space
+      lookup: max -1s at -30m unaligned of avail
+        calc: ($this - $avail) / (30 * 60)
+       every: 15s
+```
+
+In the `calc` line: `$this` is the result of the `lookup` line (i.e. the free space 30 minutes
+ago) and `$avail` is the current disk free space. So the `calc` line will either have a positive
+number of GB/second if the disk if filling up, or a negative number of GB/second if the disk is
+freeing up space.
+
+There is no `warn` or `crit` lines here. So, this template will just do the calculation and
+nothing more.
+
+Predict the hours after which the disk will run out of space:
+
+```
+    template: disk_full_after_hours
+          on: disk.space
+        calc: $avail / $disk_fill_rate / 3600
+       every: 10s
+        warn: $this > 0 and $this < 48
+        crit: $this > 0 and $this < 24
+```
+
+The `calc` line estimates the time in hours, we will run out of disk space. Of course, only
+positive values are interesting for this check, so the warning and critical conditions check
+for positive values and that we have enough free space for 48 and 24 hours respectively.
+
+Once this alarm triggers we will receive an email like this:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/17839993/87872b32-6802-11e6-8e08-b2e4afef93bb.png)
+
+### Example 4
+
+Check if any network interface is dropping packets:
+
+```
+template: 30min_packet_drops
+      on: net.drops
+  lookup: sum -30m unaligned absolute
+   every: 10s
+    crit: $this > 0
+```
+
+The `lookup` line will calculate the sum of the all dropped packets in the last 30 minutes.
+
+The `crit` line will issue a critical alarm if even a single packet has been dropped.
+
+Note that the drops chart does not exist if a network interface has never dropped a single packet.
+When netdata detects a dropped packet, it will add the chart and it will automatically attach this
+alarm to it.
+
+## Troubleshooting
+
+You can compile netdata with [debugging](../daemon#debugging) and then set in `netdata.conf`:
+
+```
+[global]
+   debug flags = 0x0000000000800000
+```
+
+Then check your `/var/log/netdata/debug.log`. It will show you how it works.
+Important: this will generate a lot of output in debug.log.
+
+You can find the context of charts by looking up the chart in either
+`http://your.netdata:19999/netdata.conf` or `http://your.netdata:19999/api/v1/charts`.
+
+You can find how netdata interpreted the expressions by examining the alarm at
+`http://your.netdata:19999/api/v1/alarms?all`. For each expression, netdata will return the
+expression as given in its config file, and the same expression with additional parentheses
+added to indicate the evaluation flow of the expression. 
+
diff --git a/src/health.c b/health/health.c
index 04e04f089..ae0c464b1 100644
--- a/src/health.c
+++ b/health/health.c
@@ -1,21 +1,28 @@
-#define NETDATA_HEALTH_INTERNALS
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
 
-int default_health_enabled = 1;
+#include "health.h"
+
+unsigned int default_health_enabled = 1;
 
 // ----------------------------------------------------------------------------
 // health initialization
 
-inline char *health_config_dir(void) {
+inline char *health_user_config_dir(void) {
     char buffer[FILENAME_MAX + 1];
-    snprintfz(buffer, FILENAME_MAX, "%s/health.d", netdata_configured_config_dir);
+    snprintfz(buffer, FILENAME_MAX, "%s/health.d", netdata_configured_user_config_dir);
     return config_get(CONFIG_SECTION_HEALTH, "health configuration directory", buffer);
 }
 
+inline char *health_stock_config_dir(void) {
+    char buffer[FILENAME_MAX + 1];
+    snprintfz(buffer, FILENAME_MAX, "%s/health.d", netdata_configured_stock_config_dir);
+    return config_get(CONFIG_SECTION_HEALTH, "stock health configuration directory", buffer);
+}
+
 void health_init(void) {
     debug(D_HEALTH, "Health configuration initializing");
 
-    if(!(default_health_enabled = config_get_boolean(CONFIG_SECTION_HEALTH, "enabled", 1))) {
+    if(!(default_health_enabled = (unsigned int)config_get_boolean(CONFIG_SECTION_HEALTH, "enabled", default_health_enabled))) {
         debug(D_HEALTH, "Health is disabled.");
         return;
     }
@@ -28,7 +35,8 @@ void health_reload_host(RRDHOST *host) {
     if(unlikely(!host->health_enabled))
         return;
 
-    char *path = health_config_dir();
+    char *user_path = health_user_config_dir();
+    char *stock_path = health_stock_config_dir();
 
     // free all running alarms
     rrdhost_wrlock(host);
@@ -59,7 +67,7 @@ void health_reload_host(RRDHOST *host) {
 
     // load the new alarms
     rrdhost_wrlock(host);
-    health_readdir(host, path);
+    health_readdir(host, user_path, stock_path, NULL);
 
     // link the loaded alarms to their charts
     rrdset_foreach_write(st, host) {
@@ -178,9 +186,9 @@ static inline void health_alarm_execute(RRDHOST *host, ALARM_ENTRY *ae) {
         error("HEALTH: Cannot popen(\"%s\", \"r\").", command_to_run);
         goto done;
     }
-    debug(D_HEALTH, "HEALTH reading from command");
-    char *s = fgets(command_to_run, FILENAME_MAX, fp);
-    (void)s;
+    debug(D_HEALTH, "HEALTH reading from command (discarding command's output)");
+    char buffer[100 + 1];
+    while(fgets(buffer, 100, fp) != NULL) ;
     ae->exec_code = mypclose(fp, command_pid);
     debug(D_HEALTH, "done executing command - returned with code %d", ae->exec_code);
 
@@ -521,6 +529,11 @@ void *health_main(void *ptr) {
                         );
 
                         rc->value = rc->calculation->result;
+
+                        if(rc->local) rc->local->last_updated = now;
+                        if(rc->family) rc->family->last_updated = now;
+                        if(rc->hostid) rc->hostid->last_updated = now;
+                        if(rc->hostname) rc->hostname->last_updated = now;
                     }
                 }
             }
diff --git a/health/health.d/adaptec_raid.conf b/health/health.d/adaptec_raid.conf
new file mode 100644
index 000000000..a1301ce8a
--- /dev/null
+++ b/health/health.d/adaptec_raid.conf
@@ -0,0 +1,24 @@
+
+# logical device status check
+
+template: adapter_raid_ld_status
+      on: adapter_raid.ld_status
+  lookup: max -5s
+   units: bool
+   every: 10s
+    crit: $this > 0
+   delay: down 5m multiplier 1.5 max 1h
+    info: at least 1 logical device is failed or degraded
+      to: sysadmin
+
+# physical device state check
+
+template: adapter_raid_pd_state
+      on: adapter_raid.pd_state
+  lookup: max -5s
+   units: bool
+   every: 10s
+    crit: $this > 0
+   delay: down 5m multiplier 1.5 max 1h
+    info: at least 1 physical device is not in online state
+      to: sysadmin
diff --git a/conf.d/health.d/apache.conf b/health/health.d/apache.conf
index 0c98b8778..0c98b8778 100644
--- a/conf.d/health.d/apache.conf
+++ b/health/health.d/apache.conf
diff --git a/health/health.d/apcupsd.conf b/health/health.d/apcupsd.conf
new file mode 100644
index 000000000..4f86037ba
--- /dev/null
+++ b/health/health.d/apcupsd.conf
@@ -0,0 +1,40 @@
+# you can disable an alarm notification by setting the 'to' line to: silent
+
+template: 10min_ups_load
+      on: apcupsd.load
+      os: *
+   hosts: *
+  lookup: average -10m unaligned of percentage
+   units: %
+   every: 1m
+    warn: $this > (($status >= $WARNING)  ? (70) : (80))
+    crit: $this > (($status == $CRITICAL) ? (85) : (95))
+   delay: down 10m multiplier 1.5 max 1h
+    info: average UPS load for the last 10 minutes
+      to: sitemgr
+
+# Discussion in https://github.com/netdata/netdata/pull/3928:
+# Fire the alarm as soon as it's going on battery (99% charge) and clear only when full.
+template: ups_charge
+      on: apcupsd.charge
+      os: *
+   hosts: *
+  lookup: average -60s unaligned of charge
+   units: %
+   every: 60s
+    warn: $this < 100
+    crit: $this < (($status == $CRITICAL) ? (60) : (50))
+   delay: down 10m multiplier 1.5 max 1h
+    info: current UPS charge, averaged over the last 60 seconds to reduce measurement errors
+      to: sitemgr
+
+template: apcupsd_last_collected_secs
+      on: apcupsd.load
+    calc: $now - $last_collected_t
+   every: 10s
+   units: seconds ago
+    warn: $this > (($status >= $WARNING)  ? ($update_every) : ( 5 * $update_every))
+    crit: $this > (($status == $CRITICAL) ? ($update_every) : (60 * $update_every))
+   delay: down 5m multiplier 1.5 max 1h
+    info: number of seconds since the last successful data collection
+      to: sitemgr
diff --git a/conf.d/health.d/backend.conf b/health/health.d/backend.conf
index 7af100d8f..7af100d8f 100644
--- a/conf.d/health.d/backend.conf
+++ b/health/health.d/backend.conf
diff --git a/health/health.d/bcache.conf b/health/health.d/bcache.conf
new file mode 100644
index 000000000..f0da9ac5e
--- /dev/null
+++ b/health/health.d/bcache.conf
@@ -0,0 +1,22 @@
+
+template: bcache_cache_errors
+      on: disk.bcache_cache_read_races
+  lookup: sum -10m unaligned absolute
+   units: errors
+   every: 1m
+    warn: $this > 0
+    crit: $this > ( ($status >= $CRITICAL) ? (0) : (10) )
+   delay: down 1h multiplier 1.5 max 2h
+    info: the number of times bcache had issues using the cache, during the last 10 mins (this usually means your SSD cache is failing)
+      to: sysadmin
+
+template: bcache_cache_dirty
+      on: disk.bcache_cache_alloc
+    calc: $dirty + $metadata + $undefined
+   units: %
+   every: 1m
+    warn: $this > ( ($status >= $WARNING ) ? ( 70 ) : ( 90 ) )
+    crit: $this > ( ($status >= $CRITICAL) ? ( 90 ) : ( 95 ) )
+   delay: up 1m down 1h multiplier 1.5 max 2h
+    info: the percentage of cache space used for dirty and metadata (this usually means your SSD cache is too small)
+      to: sysadmin
diff --git a/conf.d/health.d/beanstalkd.conf b/health/health.d/beanstalkd.conf
index 30dc27328..30dc27328 100644
--- a/conf.d/health.d/beanstalkd.conf
+++ b/health/health.d/beanstalkd.conf
diff --git a/conf.d/health.d/bind_rndc.conf b/health/health.d/bind_rndc.conf
index 4145e77cd..4145e77cd 100644
--- a/conf.d/health.d/bind_rndc.conf
+++ b/health/health.d/bind_rndc.conf
diff --git a/health/health.d/boinc.conf b/health/health.d/boinc.conf
new file mode 100644
index 000000000..43c588db6
--- /dev/null
+++ b/health/health.d/boinc.conf
@@ -0,0 +1,62 @@
+# Alarms for various BOINC issues.
+
+# Warn on any compute errors encountered.
+template: boinc_compute_errors
+      on: boinc.states
+      os: *
+   hosts: *
+families: *
+  lookup: average -10m unaligned of comperror
+   units: tasks
+   every: 1m
+    warn: $this > 0
+    crit: $this > 1
+   delay: up 1m down 5m multiplier 1.5 max 1h
+    info: the total number of compute errors over the past 10 minutes
+      to: sysadmin
+
+# Warn on lots of upload errors
+template: boinc_upload_errors
+      on: boinc.states
+      os: *
+   hosts: *
+families: *
+  lookup: average -10m unaligned of upload_failed
+   units: tasks
+   every: 1m
+    warn: $this > 0
+    crit: $this > 1
+   delay: up 1m down 5m multiplier 1.5 max 1h
+    info: the average number of failed uploads over the past 10 minutes
+      to: sysadmin
+
+# Warn on the task queue being empty
+template: boinc_total_tasks
+      on: boinc.tasks
+      os: *
+   hosts: *
+families: *
+  lookup: average -10m unaligned of total
+   units: tasks
+   every: 1m
+    warn: $this < 1
+    crit: $this < 0.1
+   delay: up 5m down 10m multiplier 1.5 max 1h
+    info: the total number of locally available tasks
+      to: sysadmin
+
+# Warn on no active tasks with a non-empty queue
+template: boinc_active_tasks
+      on: boinc.tasks
+      os: *
+   hosts: *
+families: *
+  lookup: average -10m unaligned of active
+    calc: ($boinc_total_tasks >= 1) ? ($this) : (inf)
+   units: tasks
+   every: 1m
+    warn: $this < 1
+    crit: $this < 0.1
+   delay: up 5m down 10m multiplier 1.5 max 1h
+    info: the total number of active tasks
+      to: sysadmin
diff --git a/conf.d/health.d/btrfs.conf b/health/health.d/btrfs.conf
index b27aa544f..b27aa544f 100644
--- a/conf.d/health.d/btrfs.conf
+++ b/health/health.d/btrfs.conf
diff --git a/conf.d/health.d/ceph.conf b/health/health.d/ceph.conf
index de16f7b6f..de16f7b6f 100644
--- a/conf.d/health.d/ceph.conf
+++ b/health/health.d/ceph.conf
diff --git a/conf.d/health.d/couchdb.conf b/health/health.d/couchdb.conf
index 4a2895280..4a2895280 100644
--- a/conf.d/health.d/couchdb.conf
+++ b/health/health.d/couchdb.conf
diff --git a/conf.d/health.d/cpu.conf b/health/health.d/cpu.conf
index fa8189856..fa8189856 100644
--- a/conf.d/health.d/cpu.conf
+++ b/health/health.d/cpu.conf
diff --git a/conf.d/health.d/disks.conf b/health/health.d/disks.conf
index 26f85848a..26f85848a 100644
--- a/conf.d/health.d/disks.conf
+++ b/health/health.d/disks.conf
diff --git a/health/health.d/dockerd.conf b/health/health.d/dockerd.conf
new file mode 100644
index 000000000..729906cdb
--- /dev/null
+++ b/health/health.d/dockerd.conf
@@ -0,0 +1,8 @@
+template: docker_unhealthy_containers
+      on: docker.unhealthy_containers
+   units: unhealthy containers
+   every: 10s
+  lookup: average -10s
+    crit: $this > 0
+    info: number of unhealthy containers
+      to: sysadmin
diff --git a/conf.d/health.d/elasticsearch.conf b/health/health.d/elasticsearch.conf
index dffd40965..dffd40965 100644
--- a/conf.d/health.d/elasticsearch.conf
+++ b/health/health.d/elasticsearch.conf
diff --git a/conf.d/health.d/entropy.conf b/health/health.d/entropy.conf
index 66d44ec13..66d44ec13 100644
--- a/conf.d/health.d/entropy.conf
+++ b/health/health.d/entropy.conf
diff --git a/conf.d/health.d/fping.conf b/health/health.d/fping.conf
index 43658fef6..43658fef6 100644
--- a/conf.d/health.d/fping.conf
+++ b/health/health.d/fping.conf
diff --git a/conf.d/health.d/fronius.conf b/health/health.d/fronius.conf
index cdf6c8fcb..cdf6c8fcb 100644
--- a/conf.d/health.d/fronius.conf
+++ b/health/health.d/fronius.conf
diff --git a/conf.d/health.d/haproxy.conf b/health/health.d/haproxy.conf
index e49c70d48..e49c70d48 100644
--- a/conf.d/health.d/haproxy.conf
+++ b/health/health.d/haproxy.conf
diff --git a/conf.d/health.d/httpcheck.conf b/health/health.d/httpcheck.conf
index 0ddf35eab..0ddf35eab 100644
--- a/conf.d/health.d/httpcheck.conf
+++ b/health/health.d/httpcheck.conf
diff --git a/conf.d/health.d/ipc.conf b/health/health.d/ipc.conf
index 03cf264d8..989d6e912 100644
--- a/conf.d/health.d/ipc.conf
+++ b/health/health.d/ipc.conf
@@ -5,7 +5,7 @@
       on: system.ipc_semaphores
       os: linux
    hosts: *
-    calc: $semaphores * 100 / $ipc.semaphores.max
+    calc: $semaphores * 100 / $ipc_semaphores_max
    units: %
    every: 10s
     warn: $this > (($status >= $WARNING)  ? (70) : (80))
@@ -18,7 +18,7 @@
       on: system.ipc_semaphore_arrays
       os: linux
    hosts: *
-    calc: $arrays * 100 / $ipc.semaphores.arrays.max
+    calc: $arrays * 100 / $ipc_semaphores_arrays_max
    units: %
    every: 10s
     warn: $this > (($status >= $WARNING)  ? (70) : (80))
diff --git a/conf.d/health.d/ipfs.conf b/health/health.d/ipfs.conf
index 3f77572d6..3f77572d6 100644
--- a/conf.d/health.d/ipfs.conf
+++ b/health/health.d/ipfs.conf
diff --git a/conf.d/health.d/ipmi.conf b/health/health.d/ipmi.conf
index c25581964..c25581964 100644
--- a/conf.d/health.d/ipmi.conf
+++ b/health/health.d/ipmi.conf
diff --git a/conf.d/health.d/isc_dhcpd.conf b/health/health.d/isc_dhcpd.conf
index 8054656ff..8054656ff 100644
--- a/conf.d/health.d/isc_dhcpd.conf
+++ b/health/health.d/isc_dhcpd.conf
diff --git a/conf.d/health.d/lighttpd.conf b/health/health.d/lighttpd.conf
index 915907a4a..915907a4a 100644
--- a/conf.d/health.d/lighttpd.conf
+++ b/health/health.d/lighttpd.conf
diff --git a/health/health.d/linux_power_supply.conf b/health/health.d/linux_power_supply.conf
new file mode 100644
index 000000000..27a172a14
--- /dev/null
+++ b/health/health.d/linux_power_supply.conf
@@ -0,0 +1,12 @@
+# Alert on low battery capacity.
+
+template: linux_power_supply_capacity
+      on: power_supply.capacity
+    calc: $capacity
+   units: %
+   every: 10s
+    warn: $this < 10
+    crit: $this < 5
+   delay: up 0 down 5m multiplier 1.2 max 1h
+    info: the percentage remaining capacity of the power supply
+      to: sysadmin
diff --git a/health/health.d/load.conf b/health/health.d/load.conf
new file mode 100644
index 000000000..ee0c54b8e
--- /dev/null
+++ b/health/health.d/load.conf
@@ -0,0 +1,56 @@
+
+# you can disable an alarm notification by setting the 'to' line to: silent
+
+# Calculate the base trigger point for the load average alarms.
+# This is the maximum number of CPU's in the system over the past 1
+# minute, with a special case for a single CPU of setting the trigger at 2.
+   alarm: load_trigger
+      on: system.load
+      os: linux
+   hosts: *
+    calc: ($active_processors == nan or $active_processors == inf or $active_processors < 2) ? ( 2 ) : ( $active_processors )
+   units: cpus
+   every: 1m
+    info: trigger point for load average alarms
+
+# Send alarms if the load average is unusually high.
+# These intentionally _do not_ calculate the average over the sampled
+# time period because the values being checked already are averages.
+   alarm: load_average_15
+      on: system.load
+      os: linux
+   hosts: *
+  lookup: max -1m unaligned of load15
+   units: load
+   every: 1m
+    warn: $this > (($status >= $WARNING)  ? (1.75 * $load_trigger) : (2 * $load_trigger))
+    crit: $this > (($status == $CRITICAL) ? (3.5 * $load_trigger) : (4 * $load_trigger))
+   delay: down 15m multiplier 1.5 max 1h
+    info: fifteen-minute load average
+      to: sysadmin
+
+   alarm: load_average_5
+      on: system.load
+      os: linux
+   hosts: *
+  lookup: max -1m unaligned of load5
+   units: load
+   every: 1m
+    warn: $this > (($status >= $WARNING)  ? (3.5 * $load_trigger) : (4 * $load_trigger))
+    crit: $this > (($status == $CRITICAL) ? (7 * $load_trigger) : (8 * $load_trigger))
+   delay: down 15m multiplier 1.5 max 1h
+    info: five-minute load average
+      to: sysadmin
+
+   alarm: load_average_1
+      on: system.load
+      os: linux
+   hosts: *
+  lookup: max -1m unaligned of load1
+   units: load
+   every: 1m
+    warn: $this > (($status >= $WARNING)  ? (7 * $load_trigger) : (8 * $load_trigger))
+    crit: $this > (($status == $CRITICAL) ? (14 * $load_trigger) : (16 * $load_trigger))
+   delay: down 15m multiplier 1.5 max 1h
+    info: one-minute load average
+      to: sysadmin
diff --git a/conf.d/health.d/mdstat.conf b/health/health.d/mdstat.conf
index c9e7d20db..0f5f2837e 100644
--- a/conf.d/health.d/mdstat.conf
+++ b/health/health.d/mdstat.conf
@@ -1,3 +1,13 @@
+template: mdstat_last_collected
+      on: md.disks
+    calc: $now - $last_collected_t
+   units: seconds ago
+   every: 10s
+    warn: $this > (($status >= $WARNING)  ? ($update_every) : ( 5 * $update_every))
+    crit: $this > (($status == $CRITICAL) ? ($update_every) : (60 * $update_every))
+    info: number of seconds since the last successful data collection
+      to: sysadmin
+
 template: mdstat_disks
       on: md.disks
    units: failed devices
@@ -7,12 +17,11 @@ template: mdstat_disks
     info: Array is degraded!
       to: sysadmin
 
-template: mdstat_last_collected
-      on: md.disks
-    calc: $now - $last_collected_t
-   units: seconds ago
+template: mdstat_mismatch_cnt
+      on: md.mismatch_cnt
+   units: unsynchronized blocks
+    calc: $count
    every: 10s
-    warn: $this > (($status >= $WARNING)  ? ($update_every) : ( 5 * $update_every))
-    crit: $this > (($status == $CRITICAL) ? ($update_every) : (60 * $update_every))
-    info: number of seconds since the last successful data collection
+    crit: $this > 0
+    info: Mismatch count!
       to: sysadmin
diff --git a/health/health.d/megacli.conf b/health/health.d/megacli.conf
new file mode 100644
index 000000000..1881a7be1
--- /dev/null
+++ b/health/health.d/megacli.conf
@@ -0,0 +1,48 @@
+   alarm: adapter_state
+      on: megacli.adapter_degraded
+   units: is degraded
+    lookup: sum -10s
+    every: 10s
+    crit: $this > 0
+    info: adapter state
+      to: sysadmin
+
+   template: bbu_relative_charge
+      on: megacli.bbu_relative_charge
+   units: percent
+    lookup: average -10s
+    every: 10s
+    warn: $this <= (($status >= $WARNING)  ? (85) : (80))
+    crit: $this <= (($status == $CRITICAL)  ? (50) : (40))
+    info: BBU relative state of charge
+      to: sysadmin
+
+   template: bbu_cycle_count
+      on: megacli.bbu_cycle_count
+   units: cycle count
+    lookup: average -10s
+    every: 10s
+    warn: $this >= 100
+    crit: $this >= 500
+    info: BBU cycle count
+      to: sysadmin
+
+    alarm: pd_media_errors
+      on: megacli.pd_media_error
+   units: media errors
+    lookup: sum -10s
+    every: 10s
+    warn: $this > 0
+    delay: down 1m multiplier 2 max 10m
+    info: physical drive media errors
+      to: sysadmin
+
+    alarm: pd_predictive_failures
+      on: megacli.pd_predictive_failure
+   units: predictive failures
+    lookup: sum -10s
+    every: 10s
+    warn: $this > 0
+    delay: down 1m multiplier 2 max 10m
+    info: physical drive predictive failures
+      to: sysadmin
diff --git a/conf.d/health.d/memcached.conf b/health/health.d/memcached.conf
index d248ef57a..d248ef57a 100644
--- a/conf.d/health.d/memcached.conf
+++ b/health/health.d/memcached.conf
diff --git a/conf.d/health.d/memory.conf b/health/health.d/memory.conf
index 4a0e6e522..4a0e6e522 100644
--- a/conf.d/health.d/memory.conf
+++ b/health/health.d/memory.conf
diff --git a/conf.d/health.d/mongodb.conf b/health/health.d/mongodb.conf
index a80cb3112..a80cb3112 100644
--- a/conf.d/health.d/mongodb.conf
+++ b/health/health.d/mongodb.conf
diff --git a/conf.d/health.d/mysql.conf b/health/health.d/mysql.conf
index 1eeb993f0..39c401915 100644
--- a/conf.d/health.d/mysql.conf
+++ b/health/health.d/mysql.conf
@@ -60,6 +60,21 @@ template: mysql_10s_waited_locks_ratio
 
 
 # -----------------------------------------------------------------------------
+# connections
+
+template: mysql_connections
+      on: mysql.connections_active
+    calc: $active * 100 / $limit
+   units: %
+   every: 10s
+    warn: $this > (($status >= $WARNING)  ? (60) : (70))
+    crit: $this > (($status == $CRITICAL) ? (80) : (90))
+   delay: down 15m multiplier 1.5 max 1h
+    info: the ratio of current active connections vs the maximum possible number of connections
+      to: dba
+
+
+# -----------------------------------------------------------------------------
 # replication
 
 template: mysql_replication
diff --git a/conf.d/health.d/named.conf b/health/health.d/named.conf
index 4fc65c8ee..4fc65c8ee 100644
--- a/conf.d/health.d/named.conf
+++ b/health/health.d/named.conf
diff --git a/conf.d/health.d/net.conf b/health/health.d/net.conf
index 22a88927d..489016dd5 100644
--- a/conf.d/health.d/net.conf
+++ b/health/health.d/net.conf
@@ -2,6 +2,39 @@
 # you can disable an alarm notification by setting the 'to' line to: silent
 
 # -----------------------------------------------------------------------------
+# net traffic overflow
+
+ template: 1m_received_traffic_overflow
+       on: net.net
+       os: linux
+    hosts: *
+ families: *
+   lookup: average -1m unaligned absolute of received
+     calc: ($nic_speed_max > 0) ? ($this * 100 / ($nic_speed_max * 1000)) : ( nan )
+    units: %
+    every: 10s
+     warn: $this > (($status >= $WARNING)  ? (80) : (85))
+     crit: $this > (($status == $CRITICAL) ? (85) : (90))
+    delay: down 1m multiplier 1.5 max 1h
+     info: interface received bandwidth usage over net device speed max
+       to: sysadmin
+
+ template: 1m_sent_traffic_overflow
+       on: net.net
+       os: linux
+    hosts: *
+ families: *
+   lookup: average -1m unaligned absolute of sent
+     calc: ($nic_speed_max > 0) ? ($this * 100 / ($nic_speed_max * 1000)) : ( nan )
+    units: %
+    every: 10s
+     warn: $this > (($status >= $WARNING)  ? (80) : (85))
+     crit: $this > (($status == $CRITICAL) ? (85) : (90))
+    delay: down 1m multiplier 1.5 max 1h
+     info: interface sent bandwidth usage over net device speed max
+       to: sysadmin
+
+# -----------------------------------------------------------------------------
 # dropped packets
 
 # check if an interface is dropping packets
@@ -101,7 +134,7 @@ template: 1m_received_packets_rate
       os: linux freebsd
    hosts: *
 families: *
-  lookup: average -1m of received
+  lookup: average -1m unaligned of received
    units: packets
    every: 10s
     info: the average number of packets received during the last minute
@@ -111,7 +144,7 @@ template: 10s_received_packets_storm
       os: linux freebsd
    hosts: *
 families: *
-  lookup: average -10s of received
+  lookup: average -10s unaligned of received
     calc: $this * 100 / (($1m_received_packets_rate < 1000)?(1000):($1m_received_packets_rate))
    every: 10s
    units: %
diff --git a/conf.d/health.d/netfilter.conf b/health/health.d/netfilter.conf
index fa1732b33..1d07752cc 100644
--- a/conf.d/health.d/netfilter.conf
+++ b/health/health.d/netfilter.conf
@@ -19,7 +19,7 @@
       os: linux
    hosts: *
   lookup: max -10s unaligned of connections
-    calc: $this * 100 / $netfilter.conntrack.max
+    calc: $this * 100 / $netfilter_conntrack_max
    units: %
    every: 10s
     warn: $this > (($status >= $WARNING)  ? (70) : (80))
diff --git a/conf.d/health.d/nginx.conf b/health/health.d/nginx.conf
index a686c3d99..a686c3d99 100644
--- a/conf.d/health.d/nginx.conf
+++ b/health/health.d/nginx.conf
diff --git a/conf.d/health.d/nginx_plus.conf b/health/health.d/nginx_plus.conf
index 5a171a76d..5a171a76d 100644
--- a/conf.d/health.d/nginx_plus.conf
+++ b/health/health.d/nginx_plus.conf
diff --git a/conf.d/health.d/portcheck.conf b/health/health.d/portcheck.conf
index f42b63d30..f42b63d30 100644
--- a/conf.d/health.d/portcheck.conf
+++ b/health/health.d/portcheck.conf
diff --git a/conf.d/health.d/postgres.conf b/health/health.d/postgres.conf
index 4e0583b85..4e0583b85 100644
--- a/conf.d/health.d/postgres.conf
+++ b/health/health.d/postgres.conf
diff --git a/conf.d/health.d/qos.conf b/health/health.d/qos.conf
index 7290d15ff..7290d15ff 100644
--- a/conf.d/health.d/qos.conf
+++ b/health/health.d/qos.conf
diff --git a/conf.d/health.d/ram.conf b/health/health.d/ram.conf
index b6dc5f945..4e437322c 100644
--- a/conf.d/health.d/ram.conf
+++ b/health/health.d/ram.conf
@@ -3,7 +3,7 @@
 
    alarm: used_ram_to_ignore
       on: system.ram
-      os: linux
+      os: linux freebsd
    hosts: *
     calc: ($zfs.arc_size.arcsz = nan)?(0):($zfs.arc_size.arcsz)
    every: 10s
@@ -41,7 +41,7 @@ alarm: ram_in_use
    on: system.ram
    os: freebsd
 hosts: *
- calc: (($active + $wired) - $used_ram_to_ignore) * 100 / (($active + $wired) - $used_ram_to_ignore + $cached + $free)
+ calc: ($active + $wired + $laundry + $buffers - $used_ram_to_ignore) * 100 / ($active + $wired + $laundry + $buffers - $used_ram_to_ignore + $cache + $free + $inactive)
 units: %
 every: 10s
  warn: $this > (($status >= $WARNING)  ? (80) : (90))
@@ -54,7 +54,7 @@ delay: down 15m multiplier 1.5 max 1h
     on: system.ram
     os: freebsd
  hosts: *
-  calc: ($free + $inactive + $used_ram_to_ignore) * 100 / ($free + $active + $inactive + $wired + $cache + $buffers)
+  calc: ($free + $inactive + $used_ram_to_ignore) * 100 / ($free + $active + $inactive + $wired + $cache + $laundry + $buffers)
  units: %
  every: 10s
   warn: $this < (($status >= $WARNING)  ? ( 5) : (10))
diff --git a/conf.d/health.d/redis.conf b/health/health.d/redis.conf
index c08a884a6..c08a884a6 100644
--- a/conf.d/health.d/redis.conf
+++ b/health/health.d/redis.conf
diff --git a/conf.d/health.d/retroshare.conf b/health/health.d/retroshare.conf
index 2344b60ec..2344b60ec 100644
--- a/conf.d/health.d/retroshare.conf
+++ b/health/health.d/retroshare.conf
diff --git a/conf.d/health.d/softnet.conf b/health/health.d/softnet.conf
index 77c804bfd..77c804bfd 100644
--- a/conf.d/health.d/softnet.conf
+++ b/health/health.d/softnet.conf
diff --git a/conf.d/health.d/squid.conf b/health/health.d/squid.conf
index 06cc9678f..06cc9678f 100644
--- a/conf.d/health.d/squid.conf
+++ b/health/health.d/squid.conf
diff --git a/conf.d/health.d/stiebeleltron.conf b/health/health.d/stiebeleltron.conf
index e0361eb20..e0361eb20 100644
--- a/conf.d/health.d/stiebeleltron.conf
+++ b/health/health.d/stiebeleltron.conf
diff --git a/conf.d/health.d/swap.conf b/health/health.d/swap.conf
index f920b0807..f920b0807 100644
--- a/conf.d/health.d/swap.conf
+++ b/health/health.d/swap.conf
diff --git a/conf.d/health.d/tcp_conn.conf b/health/health.d/tcp_conn.conf
index 7aa9a9800..7aa9a9800 100644
--- a/conf.d/health.d/tcp_conn.conf
+++ b/health/health.d/tcp_conn.conf
diff --git a/health/health.d/tcp_listen.conf b/health/health.d/tcp_listen.conf
new file mode 100644
index 000000000..552930ab7
--- /dev/null
+++ b/health/health.d/tcp_listen.conf
@@ -0,0 +1,82 @@
+#
+# There are two queues involved when incoming TCP connections are handled
+# (both at the kernel):
+#
+# SYN queue
+# The SYN queue tracks TCP handshakes until connections are fully established.
+# It overflows when too many incoming TCP connection requests hang in the
+# half-open state and the server is not configured to fall back to SYN cookies.
+# Overflows are usually caused by SYN flood DoS attacks (i.e. someone sends
+# lots of SYN packets and never completes the handshakes).
+#
+# Accept queue
+# The accept queue holds fully established TCP connections waiting to be handled
+# by the listening application. It overflows when the server application fails
+# to accept new connections at the rate they are coming in.
+#
+#
+# -----------------------------------------------------------------------------
+# tcp accept queue (at the kernel)
+
+   alarm: 1m_tcp_accept_queue_overflows
+      on: ip.tcp_accept_queue
+      os: linux
+   hosts: *
+  lookup: sum -60s unaligned absolute of ListenOverflows
+   units: overflows
+   every: 10s
+    crit: $this > 0
+   delay: up 0 down 5m multiplier 1.5 max 1h
+    info: the number of times the TCP accept queue of the kernel overflown, during the last minute
+      to: sysadmin
+
+# THIS IS TOO GENERIC
+# CHECK: https://github.com/netdata/netdata/issues/3234#issuecomment-423935842
+   alarm: 1m_tcp_accept_queue_drops
+      on: ip.tcp_accept_queue
+      os: linux
+   hosts: *
+  lookup: sum -60s unaligned absolute of ListenDrops
+   units: drops
+   every: 10s
+#    warn: $this > 0
+    crit: $this > (($status == $CRITICAL) ? (0) : (150))
+   delay: up 0 down 5m multiplier 1.5 max 1h
+    info: the number of times the TCP accept queue of the kernel dropped packets, during the last minute (includes bogus packets received)
+      to: sysadmin
+
+
+# -----------------------------------------------------------------------------
+# tcp SYN queue (at the kernel)
+
+# When the SYN queue is full, either TcpExtTCPReqQFullDoCookies or
+# TcpExtTCPReqQFullDrop is incremented, depending on whether SYN cookies are
+# enabled or not. In both cases this probably indicates a SYN flood attack,
+# so i guess a notification should be sent.
+
+   alarm: 1m_tcp_syn_queue_drops
+      on: ip.tcp_syn_queue
+      os: linux
+   hosts: *
+  lookup: sum -60s unaligned absolute of TCPReqQFullDrop
+   units: drops
+   every: 10s
+    warn: $this > 0
+    crit: $this > (($status == $CRITICAL) ? (0) : (60))
+   delay: up 0 down 5m multiplier 1.5 max 1h
+    info: the number of times the TCP SYN queue of the kernel was full and dropped packets, during the last minute
+      to: sysadmin
+
+   alarm: 1m_tcp_syn_queue_cookies
+      on: ip.tcp_syn_queue
+      os: linux
+   hosts: *
+  lookup: sum -60s unaligned absolute of TCPReqQFullDoCookies
+   units: cookies
+   every: 10s
+    warn: $this > 0
+    crit: $this > (($status == $CRITICAL) ? (0) : (60))
+   delay: up 0 down 5m multiplier 1.5 max 1h
+    info: the number of times the TCP SYN queue of the kernel was full and sent SYN cookies, during the last minute
+      to: sysadmin
+
diff --git a/conf.d/health.d/tcp_mem.conf b/health/health.d/tcp_mem.conf
index 6927d5765..6927d5765 100644
--- a/conf.d/health.d/tcp_mem.conf
+++ b/health/health.d/tcp_mem.conf
diff --git a/conf.d/health.d/tcp_orphans.conf b/health/health.d/tcp_orphans.conf
index 280d6590f..280d6590f 100644
--- a/conf.d/health.d/tcp_orphans.conf
+++ b/health/health.d/tcp_orphans.conf
diff --git a/conf.d/health.d/tcp_resets.conf b/health/health.d/tcp_resets.conf
index 91dad3c6a..91dad3c6a 100644
--- a/conf.d/health.d/tcp_resets.conf
+++ b/health/health.d/tcp_resets.conf
diff --git a/conf.d/health.d/udp_errors.conf b/health/health.d/udp_errors.conf
index 382b39658..5140228f5 100644
--- a/conf.d/health.d/udp_errors.conf
+++ b/health/health.d/udp_errors.conf
@@ -27,7 +27,7 @@
    units: errors
    every: 10s
     warn: $this > 0
-    crit: $this > 100
+    crit: $this > (($status == $CRITICAL) ? (0) : (100))
     info: number of UDP receive buffer errors during the last minute
    delay: up 0 down 60m multiplier 1.2 max 2h
       to: sysadmin
@@ -43,7 +43,7 @@
    units: errors
    every: 10s
     warn: $this > 0
-    crit: $this > 100
+    crit: $this > (($status == $CRITICAL) ? (0) : (100))
     info: number of UDP send buffer errors during the last minute
    delay: up 0 down 60m multiplier 1.2 max 2h
       to: sysadmin
diff --git a/conf.d/health.d/varnish.conf b/health/health.d/varnish.conf
index cca7446b4..cca7446b4 100644
--- a/conf.d/health.d/varnish.conf
+++ b/health/health.d/varnish.conf
diff --git a/conf.d/health.d/web_log.conf b/health/health.d/web_log.conf
index d8be88b47..d8be88b47 100644
--- a/conf.d/health.d/web_log.conf
+++ b/health/health.d/web_log.conf
diff --git a/conf.d/health.d/zfs.conf b/health/health.d/zfs.conf
index af73824e6..af73824e6 100644
--- a/conf.d/health.d/zfs.conf
+++ b/health/health.d/zfs.conf
diff --git a/health/health.h b/health/health.h
new file mode 100644
index 000000000..ff7a4d9bf
--- /dev/null
+++ b/health/health.h
@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_HEALTH_H
+#define NETDATA_HEALTH_H 1
+
+#include "../daemon/common.h"
+
+#define NETDATA_PLUGIN_HOOK_HEALTH \
+    { \
+        .name = "HEALTH", \
+        .config_section = NULL, \
+        .config_name = NULL, \
+        .enabled = 1, \
+        .thread = NULL, \
+        .init_routine = NULL, \
+        .start_routine = health_main \
+    },
+
+extern unsigned int default_health_enabled;
+
+#define HEALTH_ENTRY_FLAG_PROCESSED             0x00000001
+#define HEALTH_ENTRY_FLAG_UPDATED               0x00000002
+#define HEALTH_ENTRY_FLAG_EXEC_RUN              0x00000004
+#define HEALTH_ENTRY_FLAG_EXEC_FAILED           0x00000008
+#define HEALTH_ENTRY_FLAG_SAVED                 0x10000000
+#define HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION 0x80000000
+
+extern void health_init(void);
+extern void *health_main(void *ptr);
+
+extern void health_reload(void);
+
+extern int health_variable_lookup(const char *variable, uint32_t hash, RRDCALC *rc, calculated_number *result);
+extern void health_alarms2json(RRDHOST *host, BUFFER *wb, int all);
+extern void health_alarm_log2json(RRDHOST *host, BUFFER *wb, uint32_t after);
+
+void health_api_v1_chart_variables2json(RRDSET *st, BUFFER *buf);
+
+extern int health_alarm_log_open(RRDHOST *host);
+extern void health_alarm_log_close(RRDHOST *host);
+extern void health_log_rotate(RRDHOST *host);
+extern void health_alarm_log_save(RRDHOST *host, ALARM_ENTRY *ae);
+extern ssize_t health_alarm_log_read(RRDHOST *host, FILE *fp, const char *filename);
+extern void health_alarm_log_load(RRDHOST *host);
+
+extern void health_alarm_log(
+        RRDHOST *host,
+        uint32_t alarm_id,
+        uint32_t alarm_event_id,
+        time_t when,
+        const char *name,
+        const char *chart,
+        const char *family,
+        const char *exec,
+        const char *recipient,
+        time_t duration,
+        calculated_number old_value,
+        calculated_number new_value,
+        RRDCALC_STATUS old_status,
+        RRDCALC_STATUS new_status,
+        const char *source,
+        const char *units,
+        const char *info,
+        int delay,
+        uint32_t flags
+);
+
+extern void health_readdir(RRDHOST *host, const char *user_path, const char *stock_path, const char *subpath);
+extern char *health_user_config_dir(void);
+extern char *health_stock_config_dir(void);
+extern void health_reload_host(RRDHOST *host);
+extern void health_alarm_log_free(RRDHOST *host);
+
+extern void health_alarm_log_free_one_nochecks_nounlink(ALARM_ENTRY *ae);
+
+#endif //NETDATA_HEALTH_H
diff --git a/src/health_config.c b/health/health_config.c
index a25ee7227..d4af9776f 100644
--- a/src/health_config.c
+++ b/health/health_config.c
@@ -1,5 +1,6 @@
-#define NETDATA_HEALTH_INTERNALS
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "health.h"
 
 #define HEALTH_CONF_MAX_LINE 4096
 
@@ -52,7 +53,7 @@ static inline int rrdcalc_add_alarm_from_config(RRDHOST *host, RRDCALC *rc) {
             (rc->recipient)?rc->recipient:"DEFAULT",
             rc->green,
             rc->red,
-            rc->group,
+            (int)rc->group,
             rc->after,
             rc->before,
             rc->options,
@@ -106,7 +107,7 @@ static inline int rrdcalctemplate_add_template_from_config(RRDHOST *host, RRDCAL
             (rt->recipient)?rt->recipient:"DEFAULT",
             rt->green,
             rt->red,
-            rt->group,
+            (int)rt->group,
             rt->after,
             rt->before,
             rt->options,
@@ -176,7 +177,7 @@ static inline int health_parse_duration(char *string, int *result) {
 }
 
 static inline int health_parse_delay(
-        size_t line, const char *path, const char *file, char *string,
+        size_t line, const char *filename, char *string,
         int *delay_up_duration,
         int *delay_down_duration,
         int *delay_max_duration,
@@ -202,36 +203,36 @@ static inline int health_parse_delay(
 
         if(!strcasecmp(key, "up")) {
             if (!health_parse_duration(value, delay_up_duration)) {
-                error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
-                        line, path, file, value, key);
+                error("Health configuration at line %zu of file '%s': invalid value '%s' for '%s' keyword",
+                        line, filename, value, key);
             }
             else given_up = 1;
         }
         else if(!strcasecmp(key, "down")) {
             if (!health_parse_duration(value, delay_down_duration)) {
-                error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
-                        line, path, file, value, key);
+                error("Health configuration at line %zu of file '%s': invalid value '%s' for '%s' keyword",
+                        line, filename, value, key);
             }
             else given_down = 1;
         }
         else if(!strcasecmp(key, "multiplier")) {
             *delay_multiplier = strtof(value, NULL);
             if(isnan(*delay_multiplier) || isinf(*delay_multiplier) || islessequal(*delay_multiplier, 0)) {
-                error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
-                        line, path, file, value, key);
+                error("Health configuration at line %zu of file '%s': invalid value '%s' for '%s' keyword",
+                        line, filename, value, key);
             }
             else given_multiplier = 1;
         }
         else if(!strcasecmp(key, "max")) {
             if (!health_parse_duration(value, delay_max_duration)) {
-                error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
-                        line, path, file, value, key);
+                error("Health configuration at line %zu of file '%s': invalid value '%s' for '%s' keyword",
+                        line, filename, value, key);
             }
             else given_max = 1;
         }
         else {
-            error("Health configuration at line %zu of file '%s/%s': unknown keyword '%s'",
-                    line, path, file, key);
+            error("Health configuration at line %zu of file '%s': unknown keyword '%s'",
+                    line, filename, key);
         }
     }
 
@@ -285,11 +286,11 @@ static inline uint32_t health_parse_options(const char *s) {
 }
 
 static inline int health_parse_db_lookup(
-        size_t line, const char *path, const char *file, char *string,
-        int *group_method, int *after, int *before, int *every,
+        size_t line, const char *filename, char *string,
+        RRDR_GROUPING *group_method, int *after, int *before, int *every,
         uint32_t *options, char **dimensions
 ) {
-    debug(D_HEALTH, "Health configuration parsing database lookup %zu@%s/%s: %s", line, path, file, string);
+    debug(D_HEALTH, "Health configuration parsing database lookup %zu@%s: %s", line, filename, string);
 
     if(*dimensions) freez(*dimensions);
     *dimensions = NULL;
@@ -305,14 +306,14 @@ static inline int health_parse_db_lookup(
     while(*s && !isspace(*s)) s++;
     while(*s && isspace(*s)) *s++ = '\0';
     if(!*s) {
-        error("Health configuration invalid chart calculation at line %zu of file '%s/%s': expected group method followed by the 'after' time, but got '%s'",
-                line, path, file, key);
+        error("Health configuration invalid chart calculation at line %zu of file '%s': expected group method followed by the 'after' time, but got '%s'",
+                line, filename, key);
         return 0;
     }
 
-    if((*group_method = web_client_api_request_v1_data_group(key, -1)) == -1) {
-        error("Health configuration at line %zu of file '%s/%s': invalid group method '%s'",
-                line, path, file, key);
+    if((*group_method = web_client_api_request_v1_data_group(key, RRDR_GROUPING_UNDEFINED)) == RRDR_GROUPING_UNDEFINED) {
+        error("Health configuration at line %zu of file '%s': invalid group method '%s'",
+                line, filename, key);
         return 0;
     }
 
@@ -322,8 +323,8 @@ static inline int health_parse_db_lookup(
     while(*s && isspace(*s)) *s++ = '\0';
 
     if(!health_parse_duration(key, after)) {
-        error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' after group method",
-                line, path, file, key);
+        error("Health configuration at line %zu of file '%s': invalid duration '%s' after group method",
+                line, filename, key);
         return 0;
     }
 
@@ -343,8 +344,8 @@ static inline int health_parse_db_lookup(
             while(*s && isspace(*s)) *s++ = '\0';
 
             if (!health_parse_duration(value, before)) {
-                error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' for '%s' keyword",
-                        line, path, file, value, key);
+                error("Health configuration at line %zu of file '%s': invalid duration '%s' for '%s' keyword",
+                        line, filename, value, key);
             }
         }
         else if(!strcasecmp(key, HEALTH_EVERY_KEY)) {
@@ -353,8 +354,8 @@ static inline int health_parse_db_lookup(
             while(*s && isspace(*s)) *s++ = '\0';
 
             if (!health_parse_duration(value, every)) {
-                error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' for '%s' keyword",
-                        line, path, file, value, key);
+                error("Health configuration at line %zu of file '%s': invalid duration '%s' for '%s' keyword",
+                        line, filename, value, key);
             }
         }
         else if(!strcasecmp(key, "absolute") || !strcasecmp(key, "abs") || !strcasecmp(key, "absolute_sum")) {
@@ -384,17 +385,17 @@ static inline int health_parse_db_lookup(
             break;
         }
         else {
-            error("Health configuration at line %zu of file '%s/%s': unknown keyword '%s'",
-                    line, path, file, key);
+            error("Health configuration at line %zu of file '%s': unknown keyword '%s'",
+                    line, filename, key);
         }
     }
 
     return 1;
 }
 
-static inline char *health_source_file(size_t line, const char *path, const char *filename) {
+static inline char *health_source_file(size_t line, const char *file) {
     char buffer[FILENAME_MAX + 1];
-    snprintfz(buffer, FILENAME_MAX, "%zu@%s/%s", line, path, filename);
+    snprintfz(buffer, FILENAME_MAX, "%zu@%s", line, file);
     return strdupz(buffer);
 }
 
@@ -405,8 +406,10 @@ static inline void strip_quotes(char *s) {
     }
 }
 
-int health_readfile(RRDHOST *host, const char *path, const char *filename) {
-    debug(D_HEALTH, "Health configuration reading file '%s/%s'", path, filename);
+static int health_readfile(const char *filename, void *data) {
+    RRDHOST *host = (RRDHOST *)data;
+
+    debug(D_HEALTH, "Health configuration reading file '%s'", filename);
 
     static uint32_t
             hash_alarm = 0,
@@ -453,10 +456,9 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
         hash_options = simple_uhash(HEALTH_OPTIONS_KEY);
     }
 
-    snprintfz(buffer, HEALTH_CONF_MAX_LINE, "%s/%s", path, filename);
-    FILE *fp = fopen(buffer, "r");
+    FILE *fp = fopen(filename, "r");
     if(!fp) {
-        error("Health configuration cannot read file '%s'.", buffer);
+        error("Health configuration cannot read file '%s'.", filename);
         return 0;
     }
 
@@ -479,7 +481,7 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
             if(append < HEALTH_CONF_MAX_LINE)
                 continue;
             else {
-                error("Health configuration has too long muli-line at line %zu of file '%s/%s'.", line, path, filename);
+                error("Health configuration has too long muli-line at line %zu of file '%s'.", line, filename);
             }
         }
         append = 0;
@@ -487,7 +489,7 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
         char *key = s;
         while(*s && *s != ':') s++;
         if(!*s) {
-            error("Health configuration has invalid line %zu of file '%s/%s'. It does not contain a ':'. Ignoring it.", line, path, filename);
+            error("Health configuration has invalid line %zu of file '%s'. It does not contain a ':'. Ignoring it.", line, filename);
             continue;
         }
         *s = '\0';
@@ -498,12 +500,12 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
         value = trim_all(value);
 
         if(!key) {
-            error("Health configuration has invalid line %zu of file '%s/%s'. Keyword is empty. Ignoring it.", line, path, filename);
+            error("Health configuration has invalid line %zu of file '%s'. Keyword is empty. Ignoring it.", line, filename);
             continue;
         }
 
         if(!value) {
-            error("Health configuration has invalid line %zu of file '%s/%s'. value is empty. Ignoring it.", line, path, filename);
+            error("Health configuration has invalid line %zu of file '%s'. value is empty. Ignoring it.", line, filename);
             continue;
         }
 
@@ -524,7 +526,7 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
             rc->next_event_id = 1;
             rc->name = strdupz(value);
             rc->hash = simple_hash(rc->name);
-            rc->source = health_source_file(line, path, filename);
+            rc->source = health_source_file(line, filename);
             rc->green = NAN;
             rc->red = NAN;
             rc->value = NAN;
@@ -550,7 +552,7 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
             rt = callocz(1, sizeof(RRDCALCTEMPLATE));
             rt->name = strdupz(value);
             rt->hash_name = simple_hash(rt->name);
-            rt->source = health_source_file(line, path, filename);
+            rt->source = health_source_file(line, filename);
             rt->green = NAN;
             rt->red = NAN;
             rt->delay_multiplier = 1.0;
@@ -566,10 +568,10 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
 
             if(!simple_pattern_matches(os_pattern, host->os)) {
                 if(rc)
-                    debug(D_HEALTH, "HEALTH on '%s' ignoring alarm '%s' defined at %zu@%s/%s: host O/S does not match '%s'", host->hostname, rc->name, line, path, filename, os_match);
+                    debug(D_HEALTH, "HEALTH on '%s' ignoring alarm '%s' defined at %zu@%s: host O/S does not match '%s'", host->hostname, rc->name, line, filename, os_match);
 
                 if(rt)
-                    debug(D_HEALTH, "HEALTH on '%s' ignoring template '%s' defined at %zu@%s/%s: host O/S does not match '%s'", host->hostname, rt->name, line, path, filename, os_match);
+                    debug(D_HEALTH, "HEALTH on '%s' ignoring template '%s' defined at %zu@%s: host O/S does not match '%s'", host->hostname, rt->name, line, filename, os_match);
 
                 ignore_this = 1;
             }
@@ -582,10 +584,10 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
 
             if(!simple_pattern_matches(host_pattern, host->hostname)) {
                 if(rc)
-                    debug(D_HEALTH, "HEALTH on '%s' ignoring alarm '%s' defined at %zu@%s/%s: hostname does not match '%s'", host->hostname, rc->name, line, path, filename, host_match);
+                    debug(D_HEALTH, "HEALTH on '%s' ignoring alarm '%s' defined at %zu@%s: hostname does not match '%s'", host->hostname, rc->name, line, filename, host_match);
 
                 if(rt)
-                    debug(D_HEALTH, "HEALTH on '%s' ignoring template '%s' defined at %zu@%s/%s: hostname does not match '%s'", host->hostname, rt->name, line, path, filename, host_match);
+                    debug(D_HEALTH, "HEALTH on '%s' ignoring template '%s' defined at %zu@%s: hostname does not match '%s'", host->hostname, rt->name, line, filename, host_match);
 
                 ignore_this = 1;
             }
@@ -596,8 +598,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
             if(hash == hash_on && !strcasecmp(key, HEALTH_ON_KEY)) {
                 if(rc->chart) {
                     if(strcmp(rc->chart, value) != 0)
-                        error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                                line, path, filename, rc->name, key, rc->chart, value, value);
+                        error("Health configuration at line %zu of file '%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, filename, rc->name, key, rc->chart, value, value);
 
                     freez(rc->chart);
                 }
@@ -605,29 +607,29 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
                 rc->hash_chart = simple_hash(rc->chart);
             }
             else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) {
-                health_parse_db_lookup(line, path, filename, value, &rc->group, &rc->after, &rc->before,
+                health_parse_db_lookup(line, filename, value, &rc->group, &rc->after, &rc->before,
                         &rc->update_every,
                         &rc->options, &rc->dimensions);
             }
             else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) {
                 if(!health_parse_duration(value, &rc->update_every))
-                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' cannot parse duration: '%s'.",
-                            line, path, filename, rc->name, key, value);
+                    error("Health configuration at line %zu of file '%s' for alarm '%s' at key '%s' cannot parse duration: '%s'.",
+                            line, filename, rc->name, key, value);
             }
             else if(hash == hash_green && !strcasecmp(key, HEALTH_GREEN_KEY)) {
                 char *e;
                 rc->green = str2ld(value, &e);
                 if(e && *e) {
-                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.",
-                            line, path, filename, rc->name, key, e);
+                    error("Health configuration at line %zu of file '%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.",
+                            line, filename, rc->name, key, e);
                 }
             }
             else if(hash == hash_red && !strcasecmp(key, HEALTH_RED_KEY)) {
                 char *e;
                 rc->red = str2ld(value, &e);
                 if(e && *e) {
-                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.",
-                            line, path, filename, rc->name, key, e);
+                    error("Health configuration at line %zu of file '%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.",
+                            line, filename, rc->name, key, e);
                 }
             }
             else if(hash == hash_calc && !strcasecmp(key, HEALTH_CALC_KEY)) {
@@ -635,8 +637,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
                 int error = 0;
                 rc->calculation = expression_parse(value, &failed_at, &error);
                 if(!rc->calculation) {
-                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
-                            line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
+                    error("Health configuration at line %zu of file '%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, filename, rc->name, key, value, expression_strerror(error), failed_at);
                 }
             }
             else if(hash == hash_warn && !strcasecmp(key, HEALTH_WARN_KEY)) {
@@ -644,8 +646,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
                 int error = 0;
                 rc->warning = expression_parse(value, &failed_at, &error);
                 if(!rc->warning) {
-                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
-                            line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
+                    error("Health configuration at line %zu of file '%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, filename, rc->name, key, value, expression_strerror(error), failed_at);
                 }
             }
             else if(hash == hash_crit && !strcasecmp(key, HEALTH_CRIT_KEY)) {
@@ -653,15 +655,15 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
                 int error = 0;
                 rc->critical = expression_parse(value, &failed_at, &error);
                 if(!rc->critical) {
-                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
-                            line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
+                    error("Health configuration at line %zu of file '%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, filename, rc->name, key, value, expression_strerror(error), failed_at);
                 }
             }
             else if(hash == hash_exec && !strcasecmp(key, HEALTH_EXEC_KEY)) {
                 if(rc->exec) {
                     if(strcmp(rc->exec, value) != 0)
-                        error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                                line, path, filename, rc->name, key, rc->exec, value, value);
+                        error("Health configuration at line %zu of file '%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, filename, rc->name, key, rc->exec, value, value);
 
                     freez(rc->exec);
                 }
@@ -670,8 +672,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
             else if(hash == hash_recipient && !strcasecmp(key, HEALTH_RECIPIENT_KEY)) {
                 if(rc->recipient) {
                     if(strcmp(rc->recipient, value) != 0)
-                        error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                                line, path, filename, rc->name, key, rc->recipient, value, value);
+                        error("Health configuration at line %zu of file '%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, filename, rc->name, key, rc->recipient, value, value);
 
                     freez(rc->recipient);
                 }
@@ -680,8 +682,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
             else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) {
                 if(rc->units) {
                     if(strcmp(rc->units, value) != 0)
-                        error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                                line, path, filename, rc->name, key, rc->units, value, value);
+                        error("Health configuration at line %zu of file '%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, filename, rc->name, key, rc->units, value, value);
 
                     freez(rc->units);
                 }
@@ -691,8 +693,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
             else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) {
                 if(rc->info) {
                     if(strcmp(rc->info, value) != 0)
-                        error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                                line, path, filename, rc->name, key, rc->info, value, value);
+                        error("Health configuration at line %zu of file '%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, filename, rc->name, key, rc->info, value, value);
 
                     freez(rc->info);
                 }
@@ -700,22 +702,22 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
                 strip_quotes(rc->info);
             }
             else if(hash == hash_delay && !strcasecmp(key, HEALTH_DELAY_KEY)) {
-                health_parse_delay(line, path, filename, value, &rc->delay_up_duration, &rc->delay_down_duration, &rc->delay_max_duration, &rc->delay_multiplier);
+                health_parse_delay(line, filename, value, &rc->delay_up_duration, &rc->delay_down_duration, &rc->delay_max_duration, &rc->delay_multiplier);
             }
             else if(hash == hash_options && !strcasecmp(key, HEALTH_OPTIONS_KEY)) {
                 rc->options |= health_parse_options(value);
             }
             else {
-                error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has unknown key '%s'.",
-                        line, path, filename, rc->name, key);
+                error("Health configuration at line %zu of file '%s' for alarm '%s' has unknown key '%s'.",
+                        line, filename, rc->name, key);
             }
         }
         else if(rt) {
             if(hash == hash_on && !strcasecmp(key, HEALTH_ON_KEY)) {
                 if(rt->context) {
                     if(strcmp(rt->context, value) != 0)
-                        error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                                line, path, filename, rt->name, key, rt->context, value, value);
+                        error("Health configuration at line %zu of file '%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, filename, rt->name, key, rt->context, value, value);
 
                     freez(rt->context);
                 }
@@ -730,28 +732,28 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
                 rt->family_pattern = simple_pattern_create(rt->family_match, NULL, SIMPLE_PATTERN_EXACT);
             }
             else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) {
-                health_parse_db_lookup(line, path, filename, value, &rt->group, &rt->after, &rt->before,
+                health_parse_db_lookup(line, filename, value, &rt->group, &rt->after, &rt->before,
                         &rt->update_every, &rt->options, &rt->dimensions);
             }
             else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) {
                 if(!health_parse_duration(value, &rt->update_every))
-                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' cannot parse duration: '%s'.",
-                            line, path, filename, rt->name, key, value);
+                    error("Health configuration at line %zu of file '%s' for template '%s' at key '%s' cannot parse duration: '%s'.",
+                            line, filename, rt->name, key, value);
             }
             else if(hash == hash_green && !strcasecmp(key, HEALTH_GREEN_KEY)) {
                 char *e;
                 rt->green = str2ld(value, &e);
                 if(e && *e) {
-                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.",
-                            line, path, filename, rt->name, key, e);
+                    error("Health configuration at line %zu of file '%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.",
+                            line, filename, rt->name, key, e);
                 }
             }
             else if(hash == hash_red && !strcasecmp(key, HEALTH_RED_KEY)) {
                 char *e;
                 rt->red = str2ld(value, &e);
                 if(e && *e) {
-                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.",
-                            line, path, filename, rt->name, key, e);
+                    error("Health configuration at line %zu of file '%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.",
+                            line, filename, rt->name, key, e);
                 }
             }
             else if(hash == hash_calc && !strcasecmp(key, HEALTH_CALC_KEY)) {
@@ -759,8 +761,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
                 int error = 0;
                 rt->calculation = expression_parse(value, &failed_at, &error);
                 if(!rt->calculation) {
-                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
-                            line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
+                    error("Health configuration at line %zu of file '%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, filename, rt->name, key, value, expression_strerror(error), failed_at);
                 }
             }
             else if(hash == hash_warn && !strcasecmp(key, HEALTH_WARN_KEY)) {
@@ -768,8 +770,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
                 int error = 0;
                 rt->warning = expression_parse(value, &failed_at, &error);
                 if(!rt->warning) {
-                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
-                            line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
+                    error("Health configuration at line %zu of file '%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, filename, rt->name, key, value, expression_strerror(error), failed_at);
                 }
             }
             else if(hash == hash_crit && !strcasecmp(key, HEALTH_CRIT_KEY)) {
@@ -777,15 +779,15 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
                 int error = 0;
                 rt->critical = expression_parse(value, &failed_at, &error);
                 if(!rt->critical) {
-                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
-                            line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
+                    error("Health configuration at line %zu of file '%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, filename, rt->name, key, value, expression_strerror(error), failed_at);
                 }
             }
             else if(hash == hash_exec && !strcasecmp(key, HEALTH_EXEC_KEY)) {
                 if(rt->exec) {
                     if(strcmp(rt->exec, value) != 0)
-                        error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                                line, path, filename, rt->name, key, rt->exec, value, value);
+                        error("Health configuration at line %zu of file '%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, filename, rt->name, key, rt->exec, value, value);
 
                     freez(rt->exec);
                 }
@@ -794,8 +796,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
             else if(hash == hash_recipient && !strcasecmp(key, HEALTH_RECIPIENT_KEY)) {
                 if(rt->recipient) {
                     if(strcmp(rt->recipient, value) != 0)
-                        error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                                line, path, filename, rt->name, key, rt->recipient, value, value);
+                        error("Health configuration at line %zu of file '%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, filename, rt->name, key, rt->recipient, value, value);
 
                     freez(rt->recipient);
                 }
@@ -804,8 +806,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
             else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) {
                 if(rt->units) {
                     if(strcmp(rt->units, value) != 0)
-                        error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                                line, path, filename, rt->name, key, rt->units, value, value);
+                        error("Health configuration at line %zu of file '%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, filename, rt->name, key, rt->units, value, value);
 
                     freez(rt->units);
                 }
@@ -815,8 +817,8 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
             else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) {
                 if(rt->info) {
                     if(strcmp(rt->info, value) != 0)
-                        error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                                line, path, filename, rt->name, key, rt->info, value, value);
+                        error("Health configuration at line %zu of file '%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, filename, rt->name, key, rt->info, value, value);
 
                     freez(rt->info);
                 }
@@ -824,19 +826,19 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
                 strip_quotes(rt->info);
             }
             else if(hash == hash_delay && !strcasecmp(key, HEALTH_DELAY_KEY)) {
-                health_parse_delay(line, path, filename, value, &rt->delay_up_duration, &rt->delay_down_duration, &rt->delay_max_duration, &rt->delay_multiplier);
+                health_parse_delay(line, filename, value, &rt->delay_up_duration, &rt->delay_down_duration, &rt->delay_max_duration, &rt->delay_multiplier);
             }
             else if(hash == hash_options && !strcasecmp(key, HEALTH_OPTIONS_KEY)) {
                 rt->options |= health_parse_options(value);
             }
             else {
-                error("Health configuration at line %zu of file '%s/%s' for template '%s' has unknown key '%s'.",
-                        line, path, filename, rt->name, key);
+                error("Health configuration at line %zu of file '%s' for template '%s' has unknown key '%s'.",
+                        line, filename, rt->name, key);
             }
         }
         else {
-            error("Health configuration at line %zu of file '%s/%s' has unknown key '%s'. Expected either '" HEALTH_ALARM_KEY "' or '" HEALTH_TEMPLATE_KEY "'.",
-                    line, path, filename, key);
+            error("Health configuration at line %zu of file '%s' has unknown key '%s'. Expected either '" HEALTH_ALARM_KEY "' or '" HEALTH_TEMPLATE_KEY "'.",
+                    line, filename, key);
         }
     }
 
@@ -850,51 +852,7 @@ int health_readfile(RRDHOST *host, const char *path, const char *filename) {
     return 1;
 }
 
-void health_readdir(RRDHOST *host, const char *path) {
-    if(!host->health_enabled) return;
-
-    size_t pathlen = strlen(path);
-
-    debug(D_HEALTH, "Health configuration reading directory '%s'", path);
-
-    DIR *dir = opendir(path);
-    if (!dir) {
-        error("Health configuration cannot open directory '%s'.", path);
-        return;
-    }
-
-    struct dirent *de = NULL;
-    while ((de = readdir(dir))) {
-        size_t len = strlen(de->d_name);
-
-        if(de->d_type == DT_DIR
-           && (
-                   (de->d_name[0] == '.' && de->d_name[1] == '\0')
-                   || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
-           )) {
-            debug(D_HEALTH, "Ignoring directory '%s'", de->d_name);
-            continue;
-        }
-
-        else if(de->d_type == DT_DIR) {
-            char *s = mallocz(pathlen + strlen(de->d_name) + 2);
-            strcpy(s, path);
-            strcat(s, "/");
-            strcat(s, de->d_name);
-            health_readdir(host, s);
-            freez(s);
-            continue;
-        }
-
-        else if((de->d_type == DT_LNK || de->d_type == DT_REG || de->d_type == DT_UNKNOWN) &&
-                len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) {
-            health_readfile(host, path, de->d_name);
-        }
-
-        else debug(D_HEALTH, "Ignoring file '%s'", de->d_name);
-    }
-
-    closedir(dir);
+void health_readdir(RRDHOST *host, const char *user_path, const char *stock_path, const char *subpath) {
+    if(unlikely(!host->health_enabled)) return;
+    recursive_config_double_dir_load(user_path, stock_path, subpath, health_readfile, (void *) host, 0);
 }
-
-
diff --git a/src/health_json.c b/health/health_json.c
index aba7425d7..a049dc1b2 100644
--- a/src/health_json.c
+++ b/health/health_json.c
@@ -1,5 +1,6 @@
-#define NETDATA_HEALTH_INTERNALS
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "health.h"
 
 static inline void health_string2json(BUFFER *wb, const char *prefix, const char *label, const char *value, const char *suffix) {
     if(value && *value) {
diff --git a/src/health_log.c b/health/health_log.c
index a44fbadb0..dd51be2af 100644
--- a/src/health_log.c
+++ b/health/health_log.c
@@ -1,5 +1,6 @@
-#define NETDATA_HEALTH_INTERNALS
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "health.h"
 
 // ----------------------------------------------------------------------------
 // health alarm log load/save
diff --git a/health/notifications/Makefile.am b/health/notifications/Makefile.am
new file mode 100644
index 000000000..a5b88f0de
--- /dev/null
+++ b/health/notifications/Makefile.am
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+CLEANFILES = \
+	alarm-notify.sh \
+	$(NULL)
+
+include $(top_srcdir)/build/subst.inc
+SUFFIXES = .in
+
+dist_libconfig_DATA = \
+    health_alarm_notify.conf \
+    health_email_recipients.conf \
+    $(NULL)
+
+dist_plugins_SCRIPTS = \
+	alarm-notify.sh \
+	alarm-email.sh \
+	alarm-test.sh \
+	$(NULL)
+
+dist_noinst_DATA = \
+	alarm-notify.sh.in \
+	README.md \
+	$(NULL)
+
+include alerta/Makefile.inc
+include awssns/Makefile.inc
+include discord/Makefile.inc
+include email/Makefile.inc
+include flock/Makefile.inc
+include irc/Makefile.inc
+include kavenegar/Makefile.inc
+include messagebird/Makefile.inc
+include pagerduty/Makefile.inc
+include pushbullet/Makefile.inc
+include pushover/Makefile.inc
+include rocketchat/Makefile.inc
+include slack/Makefile.inc
+include syslog/Makefile.inc
+include telegram/Makefile.inc
+include twilio/Makefile.inc
+include web/Makefile.inc
diff --git a/health/notifications/Makefile.in b/health/notifications/Makefile.in
new file mode 100644
index 000000000..05a5814fc
--- /dev/null
+++ b/health/notifications/Makefile.in
@@ -0,0 +1,754 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+
+VPATH = @srcdir@
+am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__make_running_with_option = \
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+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(SCRIPTS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(libconfigdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-dist_libconfigDATA \
+	install-dist_pluginsSCRIPTS
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-dist_libconfigDATA \
+	uninstall-dist_pluginsSCRIPTS
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dist_libconfigDATA \
+	install-dist_pluginsSCRIPTS install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am \
+	uninstall-dist_libconfigDATA uninstall-dist_pluginsSCRIPTS
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
+		-e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
+		-e 's#[@]pythondir_POST@#$(pythondir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
+		$< > $@.tmp; then \
+		mv "$@.tmp" "$@"; \
+	else \
+		rm -f "$@.tmp"; \
+		false; \
+	fi
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/health/notifications/README.md b/health/notifications/README.md
new file mode 100644
index 000000000..c06638ade
--- /dev/null
+++ b/health/notifications/README.md
@@ -0,0 +1,60 @@
+# Netdata alarm notifications
+
+The `exec` line in health configuration defines an external script that will be called once
+the alarm is triggered. The default script is **[alarm-notify.sh](alarm-notify.sh.in)**.
+
+You can change the default script globally by editing `/etc/netdata/netdata.conf`.
+
+`alarm-notify.sh` is capable of sending notifications:
+
+- to multiple recipients
+- using multiple notification methods
+- filtering severity per recipient
+
+It uses **roles**. For example `sysadmin`, `webmaster`, `dba`, etc.
+
+Each alarm is assigned to one or more roles, using the `to` line of the alarm configuration.
+Then `alarm-notify.sh` uses its own configuration file `/etc/netdata/health_alarm_notify.conf`
+the default is [here](health_alarm_notify.conf)
+(to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`)
+to find the destination address of the notification for each method.
+
+Each role may have one or more destinations.
+
+So, for example the `sysadmin` role may send:
+
+1. emails to admin1@example.com and admin2@example.com
+2. pushover.net notifications to USERTOKENS `A`, `B` and `C`.
+3. pushbullet.com push notifications to admin1@example.com and admin2@example.com
+4. messages to slack.com channel `#alarms` and `#systems`.
+5. messages to Discord channels `#alarms` and `#systems`.
+
+## Configuration
+
+Edit [`/etc/netdata/health_alarm_notify.conf`](health_alarm_notify.conf)
+by running `/etc/netdata/edit-config health_alarm_notify.conf`:
+
+- settings per notification method:
+
+   all notification methods except email, require some configuration
+   (i.e. API keys, tokens, destination rooms, channels, etc).
+
+2. **recipients** per **role** per **notification method**
+
+## Testing Notifications
+
+You can run the following command by hand, to test alarms configuration:
+
+```sh
+# become user netdata
+su -s /bin/bash netdata
+
+# enable debugging info on the console
+export NETDATA_ALARM_NOTIFY_DEBUG=1
+
+# send test alarms to sysadmin
+/usr/libexec/netdata/plugins.d/alarm-notify.sh test
+
+# send test alarms to any role
+/usr/libexec/netdata/plugins.d/alarm-notify.sh test "ROLE"
+```
diff --git a/plugins.d/alarm-email.sh b/health/notifications/alarm-email.sh
index df083c655..69c4c3f8d 100755
--- a/plugins.d/alarm-email.sh
+++ b/health/notifications/alarm-email.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # OBSOLETE - REPLACED WITH
 # alarm-notify.sh
diff --git a/plugins.d/alarm-notify.sh b/health/notifications/alarm-notify.sh
index 3e23a164f..33a59590e 100755..100644
--- a/plugins.d/alarm-notify.sh
+++ b/health/notifications/alarm-notify.sh
@@ -3,7 +3,7 @@
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 # Script to send alarm notifications for netdata
 #
@@ -26,11 +26,15 @@
 #  - pagerduty.com notifications by Jim Cooley @jimcooley #1373
 #  - messagebird.com notifications by @tech_no_logical #1453
 #  - hipchat notifications by @ktsaou #1561
+#  - fleep notifications by @Ferroin
 #  - custom notifications by @ktsaou
+#  - syslog messages by @Ferroin
+#  - Microsoft Team notification by @tioumen
 
 # -----------------------------------------------------------------------------
 # testing notifications
 
+
 if [ \( "${1}" = "test" -o "${2}" = "test" \) -a "${#}" -le 2 ]
 then
     if [ "${2}" = "test" ]
@@ -44,6 +48,7 @@ then
 
     id=1
     last="CLEAR"
+    test_res=0
     for x in "WARNING" "CRITICAL"  "CLEAR"
     do
         echo >&2
@@ -53,6 +58,7 @@ then
         if [ $? -ne 0 ]
         then
             echo >&2 "# FAILED"
+            test_res=1
         else
             echo >&2 "# OK"
         fi
@@ -61,7 +67,7 @@ then
         id=$((id + 1))
     done
 
-    exit 1
+    exit $test_res
 fi
 
 export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
@@ -153,9 +159,10 @@ custom_sender() {
 # -----------------------------------------------------------------------------
 # defaults to allow running this script by hand
 
-[ -z "${NETDATA_CONFIG_DIR}"   ] && NETDATA_CONFIG_DIR="$(dirname "${0}")/../../../../etc/netdata"
-[ -z "${NETDATA_CACHE_DIR}"    ] && NETDATA_CACHE_DIR="$(dirname "${0}")/../../../../var/cache/netdata"
-[ -z "${NETDATA_REGISTRY_URL}" ] && NETDATA_REGISTRY_URL="https://registry.my-netdata.io"
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="/usr/local/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/local/lib/netdata/conf.d"
+[ -z "${NETDATA_CACHE_DIR}"        ] && NETDATA_CACHE_DIR="/usr/local/var/cache/netdata"
+[ -z "${NETDATA_REGISTRY_URL}"     ] && NETDATA_REGISTRY_URL="https://registry.my-netdata.io"
 
 # -----------------------------------------------------------------------------
 # parse command line parameters
@@ -214,7 +221,7 @@ fi
 images_base_url="https://registry.my-netdata.io"
 
 # curl options to use
-curl_options=
+curl_options=""
 
 # needed commands
 # if empty they will be searched in the system path
@@ -223,6 +230,7 @@ sendmail=
 
 # enable / disable features
 SEND_SLACK="YES"
+SEND_MSTEAM="YES"
 SEND_ALERTA="YES"
 SEND_FLOCK="YES"
 SEND_DISCORD="YES"
@@ -236,7 +244,10 @@ SEND_EMAIL="YES"
 SEND_PUSHBULLET="YES"
 SEND_KAFKA="YES"
 SEND_PD="YES"
+SEND_FLEEP="YES"
 SEND_IRC="YES"
+SEND_AWSSNS="YES"
+SEND_SYSLOG="NO"
 SEND_CUSTOM="YES"
 
 # slack configs
@@ -244,6 +255,16 @@ SLACK_WEBHOOK_URL=
 DEFAULT_RECIPIENT_SLACK=
 declare -A role_recipients_slack=()
 
+# Microsoft Team configs
+MSTEAM_WEBHOOK_URL=
+DEFAULT_RECIPIENT_MSTEAM=
+declare -A role_recipients_msteam=()
+
+# rocketchat configs
+ROCKETCHAT_WEBHOOK_URL=
+DEFAULT_RECIPIENT_ROCKETCHAT=
+declare -A role_recipients_rocketchat=()
+
 # alerta configs
 ALERTA_WEBHOOK_URL=
 ALERTA_API_KEY=
@@ -310,6 +331,20 @@ PD_SERVICE_KEY=
 DEFAULT_RECIPIENT_PD=
 declare -A role_recipients_pd=()
 
+# fleep.io configs
+FLEEP_SENDER="${host}"
+DEFAULT_RECIPIENT_FLEEP=
+declare -A role_recipients_fleep=()
+
+# Amazon SNS configs
+DEFAULT_RECIPIENT_AWSSNS=
+AWSSNS_MESSAGE_FORMAT=
+declare -A role_recipients_awssns=()
+
+# syslog configs
+SYSLOG_FACILITY=
+declare -A role_recipients_syslog=()
+
 # custom configs
 DEFAULT_RECIPIENT_CUSTOM=
 declare -A role_recipients_custom=()
@@ -318,6 +353,7 @@ declare -A role_recipients_custom=()
 EMAIL_SENDER=
 DEFAULT_RECIPIENT_EMAIL="root"
 EMAIL_CHARSET=$(locale charmap 2>/dev/null)
+EMAIL_THREADING=
 declare -A role_recipients_email=()
 
 # irc configs
@@ -327,14 +363,20 @@ DEFAULT_RECIPIENT_IRC=
 IRC_NETWORK=
 declare -A role_recipients_irc=()
 
-# load the user configuration
-# this will overwrite the variables above
-if [ -f "${NETDATA_CONFIG_DIR}/health_alarm_notify.conf" ]
-    then
-    source "${NETDATA_CONFIG_DIR}/health_alarm_notify.conf"
-else
-    error "Cannot find file ${NETDATA_CONFIG_DIR}/health_alarm_notify.conf. Using internal defaults."
-fi
+# load the stock and user configuration files
+# these will overwrite the variables above
+
+for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/health_alarm_notify.conf" "${NETDATA_USER_CONFIG_DIR}/health_alarm_notify.conf"
+do
+    if [ -f "${CONFIG}" ]
+        then
+        debug "Loading config file '${CONFIG}'..."
+        source "${CONFIG}"
+        [ $? -ne 0 ] && error "Failed to load config file '${CONFIG}'."
+    else
+        warning "Cannot find file '${CONFIG}'."
+    fi
+done
 
 # If we didn't autodetect the character set for e-mail and it wasn't
 # set by the user, we need to set it to a reasonable default.  UTF-8
@@ -405,6 +447,8 @@ filter_recipient_by_criticality() {
 # find the recipients' addresses per method
 
 declare -A arr_slack=()
+declare -A arr_msteam=()
+declare -A arr_rocketchat=()
 declare -A arr_alerta=()
 declare -A arr_flock=()
 declare -A arr_discord=()
@@ -418,7 +462,10 @@ declare -A arr_email=()
 declare -A arr_custom=()
 declare -A arr_messagebird=()
 declare -A arr_kavenegar=()
+declare -A arr_fleep=()
 declare -A arr_irc=()
+declare -A arr_syslog=()
+declare -A arr_awssns=()
 
 # netdata may call us with multiple roles, and roles may have multiple but
 # overlapping recipients - so, here we find the unique recipients.
@@ -500,6 +547,22 @@ do
         [ "${r}" != "disabled" ] && filter_recipient_by_criticality slack "${r}" && arr_slack[${r/|*/}]="1"
     done
 
+    # Microsoft Team
+    a="${role_recipients_msteam[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_MSTEAM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality msteam "${r}" && arr_msteam[${r/|*/}]="1"
+    done
+
+    # rocketchat
+    a="${role_recipients_rocketchat[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_ROCKETCHAT}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality rocketchat "${r}" && arr_rocketchat[${r/|*/}]="1"
+    done
+
     # alerta
     a="${role_recipients_alerta[${x}]}"
     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_ALERTA}"
@@ -531,7 +594,15 @@ do
     do
         [ "${r}" != "disabled" ] && filter_recipient_by_criticality pd "${r}" && arr_pd[${r/|*/}]="1"
     done
-    
+
+    # fleep.io
+    a="${role_recipients_fleep[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_FLEEP}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality fleep "${r}" && arr_fleep[${r/|*/}]="1"
+    done
+
     # irc
     a="${role_recipients_irc[${x}]}"
     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_IRC}"
@@ -540,6 +611,22 @@ do
         [ "${r}" != "disabled" ] && filter_recipient_by_criticality irc "${r}" && arr_irc[${r/|*/}]="1"
     done
 
+    # amazon sns
+    a="${role_recipients_awssns[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_AWSSNS}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality awssns "${r}" && arr_awssns[${r/|*/}]="1"
+    done
+
+    # syslog
+    a="${role_recipients_syslog[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_SYSLOG}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality syslog "${r}" && arr_syslog[${r/|*/}]="1"
+    done
+
     # custom
     a="${role_recipients_custom[${x}]}"
     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_CUSTOM}"
@@ -554,6 +641,14 @@ done
 to_slack="${!arr_slack[*]}"
 [ -z "${to_slack}" ] && SEND_SLACK="NO"
 
+# build the list of Microsoft team recipients (channels)
+to_msteam="${!arr_msteam[*]}"
+[ -z "${to_msteam}" ] && SEND_MSTEAM="NO"
+
+# build the list of rocketchat recipients (channels)
+to_rocketchat="${!arr_rocketchat[*]}"
+[ -z "${to_rocketchat}" ] && SEND_ROCKETCHAT="NO"
+
 # build the list of alerta recipients (channels)
 to_alerta="${!arr_alerta[*]}"
 [ -z "${to_alerta}" ] && SEND_ALERTA="NO"
@@ -598,6 +693,10 @@ to_telegram="${!arr_telegram[*]}"
 to_pd="${!arr_pd[*]}"
 [ -z "${to_pd}" ] && SEND_PD="NO"
 
+# build the list of fleep recipients (conversation webhooks)
+to_fleep="${!arr_fleep[*]}"
+[ -z "${to_fleep}" ] && SEND_FLEEP="NO"
+
 # build the list of custom recipients
 to_custom="${!arr_custom[*]}"
 [ -z "${to_custom}" ] && SEND_CUSTOM="NO"
@@ -615,12 +714,23 @@ done
 to_irc="${!arr_irc[*]}"
 [ -z "${to_irc}" ] && SEND_IRC="NO"
 
+# build the list of awssns recipients (facilities, servers, and prefixes)
+to_awssns="${!arr_awssns[*]}"
+[ -z "${to_awssns}" ] && SEND_AWSSNS="NO"
+
+# build the list of syslog recipients (facilities, servers, and prefixes)
+to_syslog="${!arr_syslog[*]}"
+[ -z "${to_syslog}" ] && SEND_SYSLOG="NO"
+
 # -----------------------------------------------------------------------------
 # verify the delivery methods supported
 
 # check slack
 [ -z "${SLACK_WEBHOOK_URL}" ] && SEND_SLACK="NO"
 
+# check rocketchat
+[ -z "${ROCKETCHAT_WEBHOOK_URL}" ] && SEND_ROCKETCHAT="NO"
+
 # check alerta
 [ -z "${ALERTA_WEBHOOK_URL}" ] && SEND_ALERTA="NO"
 
@@ -657,6 +767,9 @@ to_irc="${!arr_irc[*]}"
 # check irc
 [ -z "${IRC_NETWORK}" ] && SEND_IRC="NO"
 
+# check fleep
+[ -z "${FLEEP_SERVER}" -o -z "${FLEEP_SENDER}" ] && SEND_FLEEP="NO"
+
 # check pagerduty.com
 # if we need pd-send, check for the pd-send command
 # https://www.pagerduty.com/docs/guides/agent-install-guide/
@@ -674,6 +787,7 @@ fi
 if [ \( \
            "${SEND_PUSHOVER}"    = "YES" \
         -o "${SEND_SLACK}"       = "YES" \
+        -o "${SEND_ROCKETCHAT}"  = "YES" \
         -o "${SEND_ALERTA}"      = "YES" \
         -o "${SEND_FLOCK}"       = "YES" \
         -o "${SEND_DISCORD}"     = "YES" \
@@ -684,7 +798,9 @@ if [ \( \
         -o "${SEND_TELEGRAM}"    = "YES" \
         -o "${SEND_PUSHBULLET}"  = "YES" \
         -o "${SEND_KAFKA}"       = "YES" \
+        -o "${SEND_FLEEP}"       = "YES" \
         -o "${SEND_CUSTOM}"      = "YES" \
+        -o "${SEND_MSTEAM}"        = "YES" \
     \) -a -z "${curl}" ]
     then
     curl="$(which curl 2>/dev/null || command -v curl 2>/dev/null)"
@@ -695,6 +811,8 @@ if [ \( \
         SEND_PUSHBULLET="NO"
         SEND_TELEGRAM="NO"
         SEND_SLACK="NO"
+        SEND_MSTEAM="NO"
+        SEND_ROCKETCHAT="NO"
         SEND_ALERTA="NO"
         SEND_FLOCK="NO"
         SEND_DISCORD="NO"
@@ -703,6 +821,7 @@ if [ \( \
         SEND_MESSAGEBIRD="NO"
         SEND_KAVENEGAR="NO"
         SEND_KAFKA="NO"
+        SEND_FLEEP="NO"
         SEND_CUSTOM="NO"
     fi
 fi
@@ -718,11 +837,34 @@ if [ "${SEND_EMAIL}" = "YES" -a -z "${sendmail}" ]
     fi
 fi
 
+# if we need logger, check for the logger command
+if [ "${SEND_SYSLOG}" = "YES" -a -z "${logger}" ]
+    then
+    logger="$(which logger 2>/dev/null || command -v logger 2>/dev/null)"
+    if [ -z "${logger}" ]
+        then
+        debug "Cannot find logger command in the system path. Disabling syslog notifications."
+        SEND_SYSLOG="NO"
+    fi
+fi
+
+# if we need aws, check for the aws command
+if [ "${SEND_AWSSNS}" = "YES" -a -z "${aws}" ]
+    then
+    aws="$(which aws 2>/dev/null || command -v aws 2>/dev/null)"
+    if [ -z "${aws}" ]
+        then
+        debug "Cannot find aws command in the system path.  Disabling Amazon SNS notifications."
+        SEND_AWSSNS="NO"
+    fi
+fi
+
 # check that we have at least a method enabled
 if [   "${SEND_EMAIL}"          != "YES" \
     -a "${SEND_PUSHOVER}"       != "YES" \
     -a "${SEND_TELEGRAM}"       != "YES" \
     -a "${SEND_SLACK}"          != "YES" \
+    -a "${SEND_ROCKETCHAT}"     != "YES" \
     -a "${SEND_ALERTA}"         != "YES" \
     -a "${SEND_FLOCK}"          != "YES" \
     -a "${SEND_DISCORD}"        != "YES" \
@@ -733,8 +875,12 @@ if [   "${SEND_EMAIL}"          != "YES" \
     -a "${SEND_PUSHBULLET}"     != "YES" \
     -a "${SEND_KAFKA}"          != "YES" \
     -a "${SEND_PD}"             != "YES" \
+    -a "${SEND_FLEEP}"          != "YES" \
     -a "${SEND_CUSTOM}"         != "YES" \
     -a "${SEND_IRC}"            != "YES" \
+    -a "${SEND_AWSSNS}"         != "YES" \
+    -a "${SEND_SYSLOG}"         != "YES" \
+    -a "${SEND_MSTEAM}"         != "YES" \
     ]
     then
     fatal "All notification methods are disabled. Not sending notification for host '${host}', chart '${chart}' to '${roles}' for '${name}' = '${value}' for status '${status}'."
@@ -743,8 +889,18 @@ fi
 # -----------------------------------------------------------------------------
 # get the date the alarm happened
 
-date="$(date --date=@${when} 2>/dev/null)"
-[ -z "${date}" ] && date="$(date 2>/dev/null)"
+date=$(date --date=@${when} "${date_format}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date "${date_format}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date --date=@${when} 2>/dev/null)
+[ -z "${date}" ] && date=$(date 2>/dev/null)
+
+# ----------------------------------------------------------------------------
+# prepare some extra headers if we've been asked to thread e-mails
+if [ "${SEND_EMAIL}" == "YES" -a "${EMAIL_THREADING}" == "YES" ] ; then
+    email_thread_headers="In-Reply-To: <${chart}-${name}@${host}>\nReferences: <${chart}-${name}@${host}>"
+else
+    email_thread_headers=
+fi
 
 # -----------------------------------------------------------------------------
 # function to URL encode a string
@@ -830,39 +986,42 @@ duration4human() {
 # email sender
 
 send_email() {
-    local ret= opts=
+    local ret= opts=() sender_email="${EMAIL_SENDER}" sender_name=
     if [ "${SEND_EMAIL}" = "YES" ]
         then
 
         if [ ! -z "${EMAIL_SENDER}" ]
             then
-            if [[ "${EMAIL_SENDER}" =~ \".*\"\ \<.*\> ]]
-                then
-                # the name includes single quotes
-                opts=" -f $(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1) -F $(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)"
-            elif [[ "${EMAIL_SENDER}" =~ \'.*\'\ \<.*\> ]]
+            if [[ "${EMAIL_SENDER}" =~ ^\".*\"\ \<.*\>$ ]]
                 then
                 # the name includes double quotes
-                opts=" -f $(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1) -F $(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)"
-            elif [[ "${EMAIL_SENDER}" =~ .*\ \<.*\> ]]
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d '"' -f 2)"
+            elif [[ "${EMAIL_SENDER}" =~ ^\'.*\'\ \<.*\>$ ]]
+                then
+                # the name includes single quotes
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d "'" -f 2)"
+            elif [[ "${EMAIL_SENDER}" =~ ^.*\ \<.*\>$ ]]
                 then
                 # the name does not have any quotes
-                opts=" -f $(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1) -F '$(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)'"
-            else
-                # no name at all
-                opts=" -f ${EMAIL_SENDER}"
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)"
             fi
         fi
 
+        [ ! -z "${sender_email}" ] && opts+=(-f "${sender_email}")
+        [ ! -z "${sender_name}" ]  && opts+=(-F "${sender_name}")
+
         if [ "${debug}" = "1" ]
             then
             echo >&2 "--- BEGIN sendmail command ---"
-            printf >&2 "%q " "${sendmail}" -t ${opts}
+            printf >&2 "%q " "${sendmail}" -t "${opts[@]}"
             echo >&2
             echo >&2 "--- END sendmail command ---"
         fi
 
-        "${sendmail}" -t ${opts}
+        "${sendmail}" -t "${opts[@]}"
         ret=$?
 
         if [ ${ret} -eq 0 ]
@@ -1242,6 +1401,65 @@ send_telegram() {
 }
 
 # -----------------------------------------------------------------------------
+# Microsoft Team sender
+
+send_msteam() {
+
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_MSTEAM}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  icon="${MSTEAM_ICON_WARNING}" && color="${MSTEAM_COLOR_WARNING}";;
+        CRITICAL) icon="${MSTEAM_ICON_CRITICAL}" && color="${MSTEAM_COLOR_CRITICAL}";;
+        CLEAR)    icon="${MSTEAM_ICON_CLEAR}" && color="${MSTEAM_COLOR_CLEAR}";;
+        *)        icon="${MSTEAM_ICON_DEFAULT}" && color="${MSTEAM_COLOR_DEFAULT}";;
+    esac
+
+    for channel in ${channels}
+    do
+        ## More details are available here regarding the payload syntax options : https://docs.microsoft.com/en-us/outlook/actionable-messages/message-card-reference
+        ## Online designer : https://acdesignerbeta.azurewebsites.net/
+        payload="$(cat <<EOF
+        {
+            "@context": "http://schema.org/extensions",
+            "@type": "MessageCard",
+            "themeColor": "${color}",
+            "title": "$icon Alert ${status} from netdata for ${host}",
+            "text": "${host} ${status_message}, ${chart} (_${family}_), *${alarm}*",
+            "potentialAction": [
+            {
+                "@type": "OpenUri",
+                "name": "Netdata",
+                "targets": [
+                { "os": "default", "uri": "${goto_url}" }
+                ]
+            }
+            ]
+        }
+EOF
+        )"
+
+	# Replacing in the webhook CHANNEL string by the MS Teams channel name from conf file.
+	webhook="${webhook//CHANNEL/${channel}}"
+
+	httpcode=$(docurl -H "Content-Type: application/json" -d "${payload}" "${webhook}")
+
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent Microsoft team notification for: ${host} ${chart}.${name} is ${status} to '${webhook}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send Microsoft team notification for: ${host} ${chart}.${name} is ${status} to '${webhook}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+
 # slack sender
 
 send_slack() {
@@ -1305,6 +1523,71 @@ EOF
     return 1
 }
 
+
+# -----------------------------------------------------------------------------
+# rocketchat sender
+
+send_rocketchat() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_ROCKETCHAT}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "alias": "netdata on ${host}",
+            "avatar": "${images_base_url}/images/seo-performance-128.png",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "attachments": [
+                {
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "short": true,
+                            "value": "chart"
+                        },
+                        {
+                            "title": "${family}",
+                            "short": true,
+                            "value": "family"
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "ts": "${when}"
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent rocketchat notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send rocketchat notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
 # -----------------------------------------------------------------------------
 # alerta sender
 
@@ -1471,6 +1754,36 @@ EOF
 }
 
 # -----------------------------------------------------------------------------
+# fleep sender
+
+send_fleep() {
+    local httpcode sent=0 webhooks="${1}" data message
+    if [ "${SEND_FLEEP}" = "YES" ] ; then
+            message="${host} ${status_message}, \`${chart}\` (${family}), *${alarm}*\\n${info}"
+
+            for hook in "${webhooks}" ; do
+                data="{ "
+                data="${data} 'message': '${message}', "
+                data="${data} 'user': '${FLEEP_SENDER}' "
+                data="${data} }"
+
+                httpcode=$(docurl -X POST --data "${data}" "https://fleep.io/hook/${hook}")
+
+                if [ "${httpcode}" = "200" ] ; then
+                    info "sent fleep data for: ${host} ${chart}.${name} is ${status} and user '${FLEEP_SENDER}'"
+                    sent=$((sent + 1))
+                else
+                    error "failed to send fleep data for: ${host} ${chart}.${name} is ${status} and user '${FLEEP_SENDER}' with HTTP error code ${httpcode}."
+                fi
+            done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
 # irc sender
 
 send_irc() {
@@ -1510,6 +1823,106 @@ send_irc() {
     return 1
 }
 
+# -----------------------------------------------------------------------------
+# Amazon SNS sender
+
+send_awssns() {
+    local targets="${1}" message='' sent=0 region=''
+    local default_format="${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+    [ "${SEND_AWSSNS}" = "YES" ] || return 1
+
+    message=${AWSSNS_MESSAGE_FORMAT:-${default_format}}
+
+    for target in ${targets} ; do
+        # Extract the region from the target ARN.  We need to explicitly specify the region so that it matches up correctly.
+        region="$(echo ${target} | cut -f 4 -d ':')"
+        ${aws} sns publish --region "${region}" --subject "${host} ${status_message} - ${name//_/ } - ${chart}" --message "${message}" --target-arn ${target} &>/dev/null
+        if [ $? = 0 ]; then
+            info "sent Amazon SNS notification for: ${host} ${chart}.${name} is ${status} to '${target}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send Amazon SNS notification for: ${host} ${chart}.${name} is ${status} to '${target}'" 
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# syslog sender
+
+send_syslog() {
+    local facility=${SYSLOG_FACILITY:-"local6"} level='info' targets="${1}"
+    local priority='' message='' host='' port='' prefix=''
+    local temp1='' temp2=''
+
+    [ "${SEND_SYSLOG}" = "YES" ] || return 1
+
+    if [ "${status}" = "CRITICAL" ] ; then
+        level='crit'
+    elif [ "${status}" = "WARNING" ] ; then
+        level='warning'
+    fi
+
+    for target in ${targets} ; do
+        priority="${facility}.${level}"
+        message=''
+        host=''
+        port=''
+        prefix=''
+        temp1=''
+        temp2=''
+
+        prefix=$(echo ${target} | cut -d '/' -f 2)
+        temp1=$(echo ${target} | cut -d '/' -f 1)
+
+        if [ ${prefix} != ${temp1} ] ; then
+            if (echo ${temp1} | grep -q '@' ) ; then
+                temp2=$(echo ${temp1} | cut -d '@' -f 1)
+                host=$(echo ${temp1} | cut -d '@' -f 2)
+
+                if [ ${temp2} != ${host} ] ; then
+                    priority=${temp2}
+                fi
+
+                port=$(echo ${host} | rev | cut -d ':' -f 1 | rev)
+
+                if ( echo ${host} | grep -E -q '\[.*\]' ) ; then
+                    if ( echo ${port} | grep -q ']' ) ; then
+                        port=''
+                    else
+                        host=$(echo ${host} | rev | cut -d ':' -f 2- | rev)
+                    fi
+                else
+                    if [ ${port} = ${host} ] ; then
+                        port=''
+                    else
+                        host=$(echo ${host} | cut -d ':' -f 1)
+                    fi
+                fi
+            else
+                priority=${temp1}
+            fi
+        fi
+
+        message="${prefix} ${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+        if [ ${host} ] ; then
+            logger_options="${logger_options} -n ${host}"
+            if [ ${port} ] ; then
+                logger_options="${logger_options} -P ${port}"
+            fi
+        fi
+
+        ${logger} -p ${priority} ${logger_options} "${message}"
+    done
+
+    return $?
+}
+
 
 # -----------------------------------------------------------------------------
 # prepare the content of the notification
@@ -1611,6 +2024,24 @@ send_slack "${SLACK_WEBHOOK_URL}" "${to_slack}"
 SENT_SLACK=$?
 
 # -----------------------------------------------------------------------------
+# send the Microsoft notification
+
+# Microsoft team aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_msteam "${MSTEAM_WEBHOOK_URL}" "${to_msteam}"
+SENT_MSTEAM=$?
+
+# -----------------------------------------------------------------------------
+# send the rocketchat notification
+
+# rocketchat aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_rocketchat "${ROCKETCHAT_WEBHOOK_URL}" "${to_rocketchat}"
+SENT_ROCKETCHAT=$?
+
+# -----------------------------------------------------------------------------
 # send the alerta notification
 
 # alerta aggregates posts from the same username
@@ -1725,6 +2156,12 @@ send_pd "${to_pd}"
 SENT_PD=$?
 
 # -----------------------------------------------------------------------------
+# send the fleep message
+
+send_fleep "${to_fleep}"
+SENT_FLEEP=$?
+
+# -----------------------------------------------------------------------------
 # send the irc message
 
 send_irc "${IRC_NICKNAME}" "${IRC_REALNAME}" "${to_irc}" "${IRC_NETWORK}" "${host}" "${host} ${status_message} - ${name//_/ } - ${chart} ----- ${alarm} 
@@ -1769,6 +2206,22 @@ SENT_HIPCHAT=$?
 
 
 # -----------------------------------------------------------------------------
+# send the Amazon SNS message
+
+send_awssns ${to_awssns}
+
+SENT_AWSSNS=$?
+
+
+# -----------------------------------------------------------------------------
+# send the syslog message
+
+send_syslog ${to_syslog}
+
+SENT_SYSLOG=$?
+
+
+# -----------------------------------------------------------------------------
 # send the email
 
 send_email <<EOF
@@ -1776,6 +2229,7 @@ To: ${to_email}
 Subject: ${host} ${status_message} - ${name//_/ } - ${chart}
 MIME-Version: 1.0
 Content-Type: multipart/alternative; boundary="multipart-boundary"
+${email_thread_headers}
 
 This is a MIME-encoded multipart message
 
@@ -1897,6 +2351,8 @@ if [   ${SENT_EMAIL}        -eq 0 \
     -o ${SENT_PUSHOVER}     -eq 0 \
     -o ${SENT_TELEGRAM}     -eq 0 \
     -o ${SENT_SLACK}        -eq 0 \
+    -o ${SENT_MSTEAM}       -eq 0 \
+    -o ${SENT_ROCKETCHAT}   -eq 0 \
     -o ${SENT_ALERTA}       -eq 0 \
     -o ${SENT_FLOCK}        -eq 0 \
     -o ${SENT_DISCORD}      -eq 0 \
@@ -1907,8 +2363,11 @@ if [   ${SENT_EMAIL}        -eq 0 \
     -o ${SENT_PUSHBULLET}   -eq 0 \
     -o ${SENT_KAFKA}        -eq 0 \
     -o ${SENT_PD}           -eq 0 \
+    -o ${SENT_FLEEP}        -eq 0 \
     -o ${SENT_IRC}          -eq 0 \
+    -o ${SENT_AWSSNS}       -eq 0 \
     -o ${SENT_CUSTOM}       -eq 0 \
+    -o ${SENT_SYSLOG}       -eq 0 \
     ]
     then
     # we did send something
diff --git a/health/notifications/alarm-notify.sh.in b/health/notifications/alarm-notify.sh.in
new file mode 100755
index 000000000..4aef3a521
--- /dev/null
+++ b/health/notifications/alarm-notify.sh.in
@@ -0,0 +1,2378 @@
+#!/usr/bin/env bash
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# Script to send alarm notifications for netdata
+#
+# Features:
+#  - multiple notification methods
+#  - multiple roles per alarm
+#  - multiple recipients per role
+#  - severity filtering per recipient
+#
+# Supported notification methods:
+#  - emails by @ktsaou
+#  - slack.com notifications by @ktsaou
+#  - alerta.io notifications by @kattunga
+#  - discordapp.com notifications by @lowfive
+#  - pushover.net notifications by @ktsaou
+#  - pushbullet.com push notifications by Tiago Peralta @tperalta82 #1070
+#  - telegram.org notifications by @hashworks #1002
+#  - twilio.com notifications by Levi Blaney @shadycuz #1211
+#  - kafka notifications by @ktsaou #1342
+#  - pagerduty.com notifications by Jim Cooley @jimcooley #1373
+#  - messagebird.com notifications by @tech_no_logical #1453
+#  - hipchat notifications by @ktsaou #1561
+#  - fleep notifications by @Ferroin
+#  - custom notifications by @ktsaou
+#  - syslog messages by @Ferroin
+#  - Microsoft Team notification by @tioumen
+
+# -----------------------------------------------------------------------------
+# testing notifications
+
+
+if [ \( "${1}" = "test" -o "${2}" = "test" \) -a "${#}" -le 2 ]
+then
+    if [ "${2}" = "test" ]
+    then
+        recipient="${1}"
+    else
+        recipient="${2}"
+    fi
+
+    [ -z "${recipient}" ] && recipient="sysadmin"
+
+    id=1
+    last="CLEAR"
+    test_res=0
+    for x in "WARNING" "CRITICAL"  "CLEAR"
+    do
+        echo >&2
+        echo >&2 "# SENDING TEST ${x} ALARM TO ROLE: ${recipient}"
+
+        "${0}" "${recipient}" "$(hostname)" 1 1 "${id}" "$(date +%s)" "test_alarm" "test.chart" "test.family" "${x}" "${last}" 100 90 "${0}" 1 $((0 + id)) "units" "this is a test alarm to verify notifications work" "new value" "old value"
+        if [ $? -ne 0 ]
+        then
+            echo >&2 "# FAILED"
+            test_res=1
+        else
+            echo >&2 "# OK"
+        fi
+
+        last="${x}"
+        id=$((id + 1))
+    done
+
+    exit $test_res
+fi
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+# -----------------------------------------------------------------------------
+
+PROGRAM_NAME="$(basename "${0}")"
+
+logdate() {
+    date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+    local status="${1}"
+    shift
+
+    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+    log WARNING "${@}"
+}
+
+error() {
+    log ERROR "${@}"
+}
+
+info() {
+    log INFO "${@}"
+}
+
+fatal() {
+    log FATAL "${@}"
+    exit 1
+}
+
+debug=${NETDATA_ALARM_NOTIFY_DEBUG-0}
+debug() {
+    [ "${debug}" = "1" ] && log DEBUG "${@}"
+}
+
+docurl() {
+    if [ -z "${curl}" ]
+        then
+        error "\${curl} is unset."
+        return 1
+    fi
+
+    if [ "${debug}" = "1" ]
+        then
+        echo >&2 "--- BEGIN curl command ---"
+        printf >&2 "%q " ${curl} "${@}"
+        echo >&2
+        echo >&2 "--- END curl command ---"
+
+        local out=$(mktemp /tmp/netdata-health-alarm-notify-XXXXXXXX)
+        local code=$(${curl} ${curl_options} --write-out %{http_code} --output "${out}" --silent --show-error "${@}")
+        local ret=$?
+        echo >&2 "--- BEGIN received response ---"
+        cat >&2 "${out}"
+        echo >&2
+        echo >&2 "--- END received response ---"
+        echo >&2 "RECEIVED HTTP RESPONSE CODE: ${code}"
+        rm "${out}"
+        echo "${code}"
+        return ${ret}
+    fi
+
+    ${curl} ${curl_options} --write-out %{http_code} --output /dev/null --silent --show-error "${@}"
+    return $?
+}
+
+# -----------------------------------------------------------------------------
+# this is to be overwritten by the config file
+
+custom_sender() {
+    info "not sending custom notification for ${status} of '${host}.${chart}.${name}'"
+}
+
+
+# -----------------------------------------------------------------------------
+
+# check for BASH v4+ (required for associative arrays)
+[ $(( ${BASH_VERSINFO[0]} )) -lt 4 ] && \
+    fatal "BASH version 4 or later is required (this is ${BASH_VERSION})."
+
+# -----------------------------------------------------------------------------
+# defaults to allow running this script by hand
+
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="@configdir_POST@"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="@libconfigdir_POST@"
+[ -z "${NETDATA_CACHE_DIR}"        ] && NETDATA_CACHE_DIR="@cachedir_POST@"
+[ -z "${NETDATA_REGISTRY_URL}"     ] && NETDATA_REGISTRY_URL="https://registry.my-netdata.io"
+
+# -----------------------------------------------------------------------------
+# parse command line parameters
+
+roles="${1}"               # the roles that should be notified for this event
+host="${2}"                # the host generated this event
+unique_id="${3}"           # the unique id of this event
+alarm_id="${4}"            # the unique id of the alarm that generated this event
+event_id="${5}"            # the incremental id of the event, for this alarm id
+when="${6}"                # the timestamp this event occurred
+name="${7}"                # the name of the alarm, as given in netdata health.d entries
+chart="${8}"               # the name of the chart (type.id)
+family="${9}"              # the family of the chart
+status="${10}"             # the current status : REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+old_status="${11}"         # the previous status: REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+value="${12}"              # the current value of the alarm
+old_value="${13}"          # the previous value of the alarm
+src="${14}"                # the line number and file the alarm has been configured
+duration="${15}"           # the duration in seconds of the previous alarm state
+non_clear_duration="${16}" # the total duration in seconds this is/was non-clear
+units="${17}"              # the units of the value
+info="${18}"               # a short description of the alarm
+value_string="${19}"       # friendly value (with units)
+old_value_string="${20}"   # friendly old value (with units)
+
+# -----------------------------------------------------------------------------
+# find a suitable hostname to use, if netdata did not supply a hostname
+
+this_host=$(hostname -s 2>/dev/null)
+[ -z "${host}" ] && host="${this_host}"
+
+# -----------------------------------------------------------------------------
+# screen statuses we don't need to send a notification
+
+# don't do anything if this is not WARNING, CRITICAL or CLEAR
+if [ "${status}" != "WARNING" -a "${status}" != "CRITICAL" -a "${status}" != "CLEAR" ]
+then
+    info "not sending notification for ${status} of '${host}.${chart}.${name}'"
+    exit 1
+fi
+
+# don't do anything if this is CLEAR, but it was not WARNING or CRITICAL
+if [ "${old_status}" != "WARNING" -a "${old_status}" != "CRITICAL" -a "${status}" = "CLEAR" ]
+then
+    info "not sending notification for ${status} of '${host}.${chart}.${name}' (last status was ${old_status})"
+    exit 1
+fi
+
+# -----------------------------------------------------------------------------
+# load configuration
+
+# By default fetch images from the global public registry.
+# This is required by default, since all notification methods need to download
+# images via the Internet, and private registries might not be reachable.
+# This can be overwritten at the configuration file.
+images_base_url="https://registry.my-netdata.io"
+
+# curl options to use
+curl_options=""
+
+# needed commands
+# if empty they will be searched in the system path
+curl=
+sendmail=
+
+# enable / disable features
+SEND_SLACK="YES"
+SEND_MSTEAM="YES"
+SEND_ALERTA="YES"
+SEND_FLOCK="YES"
+SEND_DISCORD="YES"
+SEND_PUSHOVER="YES"
+SEND_TWILIO="YES"
+SEND_HIPCHAT="YES"
+SEND_MESSAGEBIRD="YES"
+SEND_KAVENEGAR="YES"
+SEND_TELEGRAM="YES"
+SEND_EMAIL="YES"
+SEND_PUSHBULLET="YES"
+SEND_KAFKA="YES"
+SEND_PD="YES"
+SEND_FLEEP="YES"
+SEND_IRC="YES"
+SEND_AWSSNS="YES"
+SEND_SYSLOG="NO"
+SEND_CUSTOM="YES"
+
+# slack configs
+SLACK_WEBHOOK_URL=
+DEFAULT_RECIPIENT_SLACK=
+declare -A role_recipients_slack=()
+
+# Microsoft Team configs
+MSTEAM_WEBHOOK_URL=
+DEFAULT_RECIPIENT_MSTEAM=
+declare -A role_recipients_msteam=()
+
+# rocketchat configs
+ROCKETCHAT_WEBHOOK_URL=
+DEFAULT_RECIPIENT_ROCKETCHAT=
+declare -A role_recipients_rocketchat=()
+
+# alerta configs
+ALERTA_WEBHOOK_URL=
+ALERTA_API_KEY=
+DEFAULT_RECIPIENT_ALERTA=
+declare -A role_recipients_alerta=()
+
+# flock configs
+FLOCK_WEBHOOK_URL=
+DEFAULT_RECIPIENT_FLOCK=
+declare -A role_recipients_flock=()
+
+# discord configs
+DISCORD_WEBHOOK_URL=
+DEFAULT_RECIPIENT_DISCORD=
+declare -A role_recipients_discord=()
+
+# pushover configs
+PUSHOVER_APP_TOKEN=
+DEFAULT_RECIPIENT_PUSHOVER=
+declare -A role_recipients_pushover=()
+
+# pushbullet configs
+PUSHBULLET_ACCESS_TOKEN=
+PUSHBULLET_SOURCE_DEVICE=
+DEFAULT_RECIPIENT_PUSHBULLET=
+declare -A role_recipients_pushbullet=()
+
+# twilio configs
+TWILIO_ACCOUNT_SID=
+TWILIO_ACCOUNT_TOKEN=
+TWILIO_NUMBER=
+DEFAULT_RECIPIENT_TWILIO=
+declare -A role_recipients_twilio=()
+
+# hipchat configs
+HIPCHAT_SERVER=
+HIPCHAT_AUTH_TOKEN=
+DEFAULT_RECIPIENT_HIPCHAT=
+declare -A role_recipients_hipchat=()
+
+# messagebird configs
+MESSAGEBIRD_ACCESS_KEY=
+MESSAGEBIRD_NUMBER=
+DEFAULT_RECIPIENT_MESSAGEBIRD=
+declare -A role_recipients_messagebird=()
+
+# kavenegar configs
+KAVENEGAR_API_KEY=""
+KAVENEGAR_SENDER=""
+DEFAULT_RECIPIENT_KAVENEGAR=()
+declare -A role_recipients_kavenegar=""
+
+# telegram configs
+TELEGRAM_BOT_TOKEN=
+DEFAULT_RECIPIENT_TELEGRAM=
+declare -A role_recipients_telegram=()
+
+# kafka configs
+KAFKA_URL=
+KAFKA_SENDER_IP=
+
+# pagerduty.com configs
+PD_SERVICE_KEY=
+DEFAULT_RECIPIENT_PD=
+declare -A role_recipients_pd=()
+
+# fleep.io configs
+FLEEP_SENDER="${host}"
+DEFAULT_RECIPIENT_FLEEP=
+declare -A role_recipients_fleep=()
+
+# Amazon SNS configs
+DEFAULT_RECIPIENT_AWSSNS=
+AWSSNS_MESSAGE_FORMAT=
+declare -A role_recipients_awssns=()
+
+# syslog configs
+SYSLOG_FACILITY=
+declare -A role_recipients_syslog=()
+
+# custom configs
+DEFAULT_RECIPIENT_CUSTOM=
+declare -A role_recipients_custom=()
+
+# email configs
+EMAIL_SENDER=
+DEFAULT_RECIPIENT_EMAIL="root"
+EMAIL_CHARSET=$(locale charmap 2>/dev/null)
+EMAIL_THREADING=
+declare -A role_recipients_email=()
+
+# irc configs
+IRC_NICKNAME=
+IRC_REALNAME=
+DEFAULT_RECIPIENT_IRC=
+IRC_NETWORK=
+declare -A role_recipients_irc=()
+
+# load the stock and user configuration files
+# these will overwrite the variables above
+
+for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/health_alarm_notify.conf" "${NETDATA_USER_CONFIG_DIR}/health_alarm_notify.conf"
+do
+    if [ -f "${CONFIG}" ]
+        then
+        debug "Loading config file '${CONFIG}'..."
+        source "${CONFIG}"
+        [ $? -ne 0 ] && error "Failed to load config file '${CONFIG}'."
+    else
+        warning "Cannot find file '${CONFIG}'."
+    fi
+done
+
+# If we didn't autodetect the character set for e-mail and it wasn't
+# set by the user, we need to set it to a reasonable default.  UTF-8
+# should be correct for almost all modern UNIX systems.
+if [ -z ${EMAIL_CHARSET} ]
+    then
+    EMAIL_CHARSET="UTF-8"
+fi
+
+# -----------------------------------------------------------------------------
+# filter a recipient based on alarm event severity
+
+filter_recipient_by_criticality() {
+    local method="${1}" x="${2}" r s
+    shift
+
+    r="${x/|*/}" # the recipient
+    s="${x/*|/}" # the severity required for notifying this recipient
+
+    # no severity filtering for this person
+    [ "${r}" = "${s}" ] && return 0
+
+    # the severity is invalid
+    s="${s^^}"
+    if [ "${s}" != "CRITICAL" ]
+    then
+        error "SEVERITY FILTERING for ${x} VIA ${method}: invalid severity '${s,,}', only 'critical' is supported."
+        return 0
+    fi
+
+    # create the status tracking directory for this user
+    [ ! -d "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}" ] && \
+        mkdir -p "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}"
+
+    case "${status}" in
+        CRITICAL)
+            # make sure he will get future notifications for this alarm too
+            touch "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
+            debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: the alarm is CRITICAL (will now receive next status change)"
+            return 0
+            ;;
+
+        WARNING)
+            if [ -f "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}" ]
+            then
+                # we do not remove the file, so that he will get future notifications of this alarm
+                debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: recipient has been notified for this alarm in the past (will still receive next status change)"
+                return 0
+            fi
+            ;;
+
+        *)
+            if [ -f "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}" ]
+            then
+                # remove the file, so that he will only receive notifications for CRITICAL states for this alarm
+                rm "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
+                debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: recipient has been notified for this alarm (will only receive CRITICAL notifications from now on)"
+                return 0
+            fi
+            ;;
+    esac
+
+    debug "SEVERITY FILTERING for ${x} VIA ${method}: BLOCK: recipient should not receive this notification"
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# find the recipients' addresses per method
+
+declare -A arr_slack=()
+declare -A arr_msteam=()
+declare -A arr_rocketchat=()
+declare -A arr_alerta=()
+declare -A arr_flock=()
+declare -A arr_discord=()
+declare -A arr_pushover=()
+declare -A arr_pushbullet=()
+declare -A arr_twilio=()
+declare -A arr_hipchat=()
+declare -A arr_telegram=()
+declare -A arr_pd=()
+declare -A arr_email=()
+declare -A arr_custom=()
+declare -A arr_messagebird=()
+declare -A arr_kavenegar=()
+declare -A arr_fleep=()
+declare -A arr_irc=()
+declare -A arr_syslog=()
+declare -A arr_awssns=()
+
+# netdata may call us with multiple roles, and roles may have multiple but
+# overlapping recipients - so, here we find the unique recipients.
+for x in ${roles//,/ }
+do
+    # the roles 'silent' and 'disabled' mean:
+    # don't send a notification for this role
+    [ "${x}" = "silent" -o "${x}" = "disabled" ] && continue
+
+    # email
+    a="${role_recipients_email[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_EMAIL}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality email "${r}" && arr_email[${r/|*/}]="1"
+    done
+
+    # pushover
+    a="${role_recipients_pushover[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PUSHOVER}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pushover "${r}" && arr_pushover[${r/|*/}]="1"
+    done
+
+    # pushbullet
+    a="${role_recipients_pushbullet[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PUSHBULLET}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pushbullet "${r}" && arr_pushbullet[${r/|*/}]="1"
+    done
+
+    # twilio
+    a="${role_recipients_twilio[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_TWILIO}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality twilio "${r}" && arr_twilio[${r/|*/}]="1"
+    done
+
+    # hipchat
+    a="${role_recipients_hipchat[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_HIPCHAT}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality hipchat "${r}" && arr_hipchat[${r/|*/}]="1"
+    done
+
+    # messagebird
+    a="${role_recipients_messagebird[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_MESSAGEBIRD}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality messagebird "${r}" && arr_messagebird[${r/|*/}]="1"
+    done
+
+    # kavenegar
+    a="${role_recipients_kavenegar[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_KAVENEGAR}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality kavenegar "${r}" && arr_kavenegar[${r/|*/}]="1"
+    done
+
+    # telegram
+    a="${role_recipients_telegram[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_TELEGRAM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality telegram "${r}" && arr_telegram[${r/|*/}]="1"
+    done
+
+    # slack
+    a="${role_recipients_slack[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_SLACK}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality slack "${r}" && arr_slack[${r/|*/}]="1"
+    done
+
+    # Microsoft Team
+    a="${role_recipients_msteam[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_MSTEAM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality msteam "${r}" && arr_msteam[${r/|*/}]="1"
+    done
+
+    # rocketchat
+    a="${role_recipients_rocketchat[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_ROCKETCHAT}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality rocketchat "${r}" && arr_rocketchat[${r/|*/}]="1"
+    done
+
+    # alerta
+    a="${role_recipients_alerta[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_ALERTA}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality alerta "${r}" && arr_alerta[${r/|*/}]="1"
+    done
+
+    # flock
+    a="${role_recipients_flock[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_FLOCK}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality flock "${r}" && arr_flock[${r/|*/}]="1"
+    done
+
+    # discord
+    a="${role_recipients_discord[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_DISCORD}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality discord "${r}" && arr_discord[${r/|*/}]="1"
+    done
+
+    # pagerduty.com
+    a="${role_recipients_pd[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PD}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pd "${r}" && arr_pd[${r/|*/}]="1"
+    done
+
+    # fleep.io
+    a="${role_recipients_fleep[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_FLEEP}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality fleep "${r}" && arr_fleep[${r/|*/}]="1"
+    done
+
+    # irc
+    a="${role_recipients_irc[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_IRC}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality irc "${r}" && arr_irc[${r/|*/}]="1"
+    done
+
+    # amazon sns
+    a="${role_recipients_awssns[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_AWSSNS}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality awssns "${r}" && arr_awssns[${r/|*/}]="1"
+    done
+
+    # syslog
+    a="${role_recipients_syslog[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_SYSLOG}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality syslog "${r}" && arr_syslog[${r/|*/}]="1"
+    done
+
+    # custom
+    a="${role_recipients_custom[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_CUSTOM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality custom "${r}" && arr_custom[${r/|*/}]="1"
+    done
+
+done
+
+# build the list of slack recipients (channels)
+to_slack="${!arr_slack[*]}"
+[ -z "${to_slack}" ] && SEND_SLACK="NO"
+
+# build the list of Microsoft team recipients (channels)
+to_msteam="${!arr_msteam[*]}"
+[ -z "${to_msteam}" ] && SEND_MSTEAM="NO"
+
+# build the list of rocketchat recipients (channels)
+to_rocketchat="${!arr_rocketchat[*]}"
+[ -z "${to_rocketchat}" ] && SEND_ROCKETCHAT="NO"
+
+# build the list of alerta recipients (channels)
+to_alerta="${!arr_alerta[*]}"
+[ -z "${to_alerta}" ] && SEND_ALERTA="NO"
+
+# build the list of flock recipients (channels)
+to_flock="${!arr_flock[*]}"
+[ -z "${to_flock}" ] && SEND_FLOCK="NO"
+
+# build the list of discord recipients (channels)
+to_discord="${!arr_discord[*]}"
+[ -z "${to_discord}" ] && SEND_DISCORD="NO"
+
+# build the list of pushover recipients (user tokens)
+to_pushover="${!arr_pushover[*]}"
+[ -z "${to_pushover}" ] && SEND_PUSHOVER="NO"
+
+# build the list of pushbulet recipients (user tokens)
+to_pushbullet="${!arr_pushbullet[*]}"
+[ -z "${to_pushbullet}" ] && SEND_PUSHBULLET="NO"
+
+# build the list of twilio recipients (phone numbers)
+to_twilio="${!arr_twilio[*]}"
+[ -z "${to_twilio}" ] && SEND_TWILIO="NO"
+
+# build the list of hipchat recipients (rooms)
+to_hipchat="${!arr_hipchat[*]}"
+[ -z "${to_hipchat}" ] && SEND_HIPCHAT="NO"
+
+# build the list of messagebird recipients (phone numbers)
+to_messagebird="${!arr_messagebird[*]}"
+[ -z "${to_messagebird}" ] && SEND_MESSAGEBIRD="NO"
+
+# build the list of kavenegar recipients (phone numbers)
+to_kavenegar="${!arr_kavenegar[*]}"
+[ -z "${to_kavenegar}" ] && SEND_KAVENEGAR="NO"
+
+# check array of telegram recipients (chat ids)
+to_telegram="${!arr_telegram[*]}"
+[ -z "${to_telegram}" ] && SEND_TELEGRAM="NO"
+
+# build the list of pagerduty recipients (service keys)
+to_pd="${!arr_pd[*]}"
+[ -z "${to_pd}" ] && SEND_PD="NO"
+
+# build the list of fleep recipients (conversation webhooks)
+to_fleep="${!arr_fleep[*]}"
+[ -z "${to_fleep}" ] && SEND_FLEEP="NO"
+
+# build the list of custom recipients
+to_custom="${!arr_custom[*]}"
+[ -z "${to_custom}" ] && SEND_CUSTOM="NO"
+
+# build the list of email recipients (email addresses)
+to_email=
+for x in "${!arr_email[@]}"
+do
+    [ ! -z "${to_email}" ] && to_email="${to_email}, "
+    to_email="${to_email}${x}"
+done
+[ -z "${to_email}" ] && SEND_EMAIL="NO"
+
+# build the list of irc recipients (channels)
+to_irc="${!arr_irc[*]}"
+[ -z "${to_irc}" ] && SEND_IRC="NO"
+
+# build the list of awssns recipients (facilities, servers, and prefixes)
+to_awssns="${!arr_awssns[*]}"
+[ -z "${to_awssns}" ] && SEND_AWSSNS="NO"
+
+# build the list of syslog recipients (facilities, servers, and prefixes)
+to_syslog="${!arr_syslog[*]}"
+[ -z "${to_syslog}" ] && SEND_SYSLOG="NO"
+
+# -----------------------------------------------------------------------------
+# verify the delivery methods supported
+
+# check slack
+[ -z "${SLACK_WEBHOOK_URL}" ] && SEND_SLACK="NO"
+
+# check rocketchat
+[ -z "${ROCKETCHAT_WEBHOOK_URL}" ] && SEND_ROCKETCHAT="NO"
+
+# check alerta
+[ -z "${ALERTA_WEBHOOK_URL}" ] && SEND_ALERTA="NO"
+
+# check flock
+[ -z "${FLOCK_WEBHOOK_URL}" ] && SEND_FLOCK="NO"
+
+# check discord
+[ -z "${DISCORD_WEBHOOK_URL}" ] && SEND_DISCORD="NO"
+
+# check pushover
+[ -z "${PUSHOVER_APP_TOKEN}" ] && SEND_PUSHOVER="NO"
+
+# check pushbullet
+[ -z "${PUSHBULLET_ACCESS_TOKEN}" ] && SEND_PUSHBULLET="NO"
+
+# check twilio
+[ -z "${TWILIO_ACCOUNT_TOKEN}" -o -z "${TWILIO_ACCOUNT_SID}" -o -z "${TWILIO_NUMBER}" ] && SEND_TWILIO="NO"
+
+# check hipchat
+[ -z "${HIPCHAT_AUTH_TOKEN}" ] && SEND_HIPCHAT="NO"
+
+# check messagebird
+[ -z "${MESSAGEBIRD_ACCESS_KEY}" -o -z "${MESSAGEBIRD_NUMBER}" ] && SEND_MESSAGEBIRD="NO"
+
+# check kavenegar
+[ -z "${KAVENEGAR_API_KEY}" -o -z "${KAVENEGAR_SENDER}" ] && SEND_KAVENEGAR="NO"
+
+# check telegram
+[ -z "${TELEGRAM_BOT_TOKEN}" ] && SEND_TELEGRAM="NO"
+
+# check kafka
+[ -z "${KAFKA_URL}" -o -z "${KAFKA_SENDER_IP}" ] && SEND_KAFKA="NO"
+
+# check irc
+[ -z "${IRC_NETWORK}" ] && SEND_IRC="NO"
+
+# check fleep
+[ -z "${FLEEP_SERVER}" -o -z "${FLEEP_SENDER}" ] && SEND_FLEEP="NO"
+
+# check pagerduty.com
+# if we need pd-send, check for the pd-send command
+# https://www.pagerduty.com/docs/guides/agent-install-guide/
+if [ "${SEND_PD}" = "YES" ]
+    then
+    pd_send="$(which pd-send 2>/dev/null || command -v pd-send 2>/dev/null)"
+    if [ -z "${pd_send}" ]
+        then
+        error "Cannot find pd-send command in the system path. Disabling pagerduty.com notifications."
+        SEND_PD="NO"
+    fi
+fi
+
+# if we need curl, check for the curl command
+if [ \( \
+           "${SEND_PUSHOVER}"    = "YES" \
+        -o "${SEND_SLACK}"       = "YES" \
+        -o "${SEND_ROCKETCHAT}"  = "YES" \
+        -o "${SEND_ALERTA}"      = "YES" \
+        -o "${SEND_FLOCK}"       = "YES" \
+        -o "${SEND_DISCORD}"     = "YES" \
+        -o "${SEND_HIPCHAT}"     = "YES" \
+        -o "${SEND_TWILIO}"      = "YES" \
+        -o "${SEND_MESSAGEBIRD}" = "YES" \
+        -o "${SEND_KAVENEGAR}"   = "YES" \
+        -o "${SEND_TELEGRAM}"    = "YES" \
+        -o "${SEND_PUSHBULLET}"  = "YES" \
+        -o "${SEND_KAFKA}"       = "YES" \
+        -o "${SEND_FLEEP}"       = "YES" \
+        -o "${SEND_CUSTOM}"      = "YES" \
+        -o "${SEND_MSTEAM}"        = "YES" \
+    \) -a -z "${curl}" ]
+    then
+    curl="$(which curl 2>/dev/null || command -v curl 2>/dev/null)"
+    if [ -z "${curl}" ]
+        then
+        error "Cannot find curl command in the system path. Disabling all curl based notifications."
+        SEND_PUSHOVER="NO"
+        SEND_PUSHBULLET="NO"
+        SEND_TELEGRAM="NO"
+        SEND_SLACK="NO"
+        SEND_MSTEAM="NO"
+        SEND_ROCKETCHAT="NO"
+        SEND_ALERTA="NO"
+        SEND_FLOCK="NO"
+        SEND_DISCORD="NO"
+        SEND_TWILIO="NO"
+        SEND_HIPCHAT="NO"
+        SEND_MESSAGEBIRD="NO"
+        SEND_KAVENEGAR="NO"
+        SEND_KAFKA="NO"
+        SEND_FLEEP="NO"
+        SEND_CUSTOM="NO"
+    fi
+fi
+
+# if we need sendmail, check for the sendmail command
+if [ "${SEND_EMAIL}" = "YES" -a -z "${sendmail}" ]
+    then
+    sendmail="$(which sendmail 2>/dev/null || command -v sendmail 2>/dev/null)"
+    if [ -z "${sendmail}" ]
+        then
+        debug "Cannot find sendmail command in the system path. Disabling email notifications."
+        SEND_EMAIL="NO"
+    fi
+fi
+
+# if we need logger, check for the logger command
+if [ "${SEND_SYSLOG}" = "YES" -a -z "${logger}" ]
+    then
+    logger="$(which logger 2>/dev/null || command -v logger 2>/dev/null)"
+    if [ -z "${logger}" ]
+        then
+        debug "Cannot find logger command in the system path. Disabling syslog notifications."
+        SEND_SYSLOG="NO"
+    fi
+fi
+
+# if we need aws, check for the aws command
+if [ "${SEND_AWSSNS}" = "YES" -a -z "${aws}" ]
+    then
+    aws="$(which aws 2>/dev/null || command -v aws 2>/dev/null)"
+    if [ -z "${aws}" ]
+        then
+        debug "Cannot find aws command in the system path.  Disabling Amazon SNS notifications."
+        SEND_AWSSNS="NO"
+    fi
+fi
+
+# check that we have at least a method enabled
+if [   "${SEND_EMAIL}"          != "YES" \
+    -a "${SEND_PUSHOVER}"       != "YES" \
+    -a "${SEND_TELEGRAM}"       != "YES" \
+    -a "${SEND_SLACK}"          != "YES" \
+    -a "${SEND_ROCKETCHAT}"     != "YES" \
+    -a "${SEND_ALERTA}"         != "YES" \
+    -a "${SEND_FLOCK}"          != "YES" \
+    -a "${SEND_DISCORD}"        != "YES" \
+    -a "${SEND_TWILIO}"         != "YES" \
+    -a "${SEND_HIPCHAT}"        != "YES" \
+    -a "${SEND_MESSAGEBIRD}"    != "YES" \
+    -a "${SEND_KAVENEGAR}"      != "YES" \
+    -a "${SEND_PUSHBULLET}"     != "YES" \
+    -a "${SEND_KAFKA}"          != "YES" \
+    -a "${SEND_PD}"             != "YES" \
+    -a "${SEND_FLEEP}"          != "YES" \
+    -a "${SEND_CUSTOM}"         != "YES" \
+    -a "${SEND_IRC}"            != "YES" \
+    -a "${SEND_AWSSNS}"         != "YES" \
+    -a "${SEND_SYSLOG}"         != "YES" \
+    -a "${SEND_MSTEAM}"         != "YES" \
+    ]
+    then
+    fatal "All notification methods are disabled. Not sending notification for host '${host}', chart '${chart}' to '${roles}' for '${name}' = '${value}' for status '${status}'."
+fi
+
+# -----------------------------------------------------------------------------
+# get the date the alarm happened
+
+date=$(date --date=@${when} "${date_format}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date "${date_format}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date --date=@${when} 2>/dev/null)
+[ -z "${date}" ] && date=$(date 2>/dev/null)
+
+# ----------------------------------------------------------------------------
+# prepare some extra headers if we've been asked to thread e-mails
+if [ "${SEND_EMAIL}" == "YES" -a "${EMAIL_THREADING}" == "YES" ] ; then
+    email_thread_headers="In-Reply-To: <${chart}-${name}@${host}>\nReferences: <${chart}-${name}@${host}>"
+else
+    email_thread_headers=
+fi
+
+# -----------------------------------------------------------------------------
+# function to URL encode a string
+
+urlencode() {
+    local string="${1}" strlen encoded pos c o
+
+    strlen=${#string}
+    for (( pos=0 ; pos<strlen ; pos++ ))
+    do
+        c=${string:${pos}:1}
+        case "${c}" in
+            [-_.~a-zA-Z0-9])
+                o="${c}"
+                ;;
+
+            *)
+                printf -v o '%%%02x' "'${c}"
+                ;;
+        esac
+        encoded+="${o}"
+    done
+
+    REPLY="${encoded}"
+    echo "${REPLY}"
+}
+
+# -----------------------------------------------------------------------------
+# function to convert a duration in seconds, to a human readable duration
+# using DAYS, MINUTES, SECONDS
+
+duration4human() {
+    local s="${1}" d=0 h=0 m=0 ds="day" hs="hour" ms="minute" ss="second" ret
+    d=$(( s / 86400 ))
+    s=$(( s - (d * 86400) ))
+    h=$(( s / 3600 ))
+    s=$(( s - (h * 3600) ))
+    m=$(( s / 60 ))
+    s=$(( s - (m * 60) ))
+
+    if [ ${d} -gt 0 ]
+    then
+        [ ${m} -ge 30 ] && h=$(( h + 1 ))
+        [ ${d} -gt 1 ] && ds="days"
+        [ ${h} -gt 1 ] && hs="hours"
+        if [ ${h} -gt 0 ]
+        then
+            ret="${d} ${ds} and ${h} ${hs}"
+        else
+            ret="${d} ${ds}"
+        fi
+    elif [ ${h} -gt 0 ]
+    then
+        [ ${s} -ge 30 ] && m=$(( m + 1 ))
+        [ ${h} -gt 1 ] && hs="hours"
+        [ ${m} -gt 1 ] && ms="minutes"
+        if [ ${m} -gt 0 ]
+        then
+            ret="${h} ${hs} and ${m} ${ms}"
+        else
+            ret="${h} ${hs}"
+        fi
+    elif [ ${m} -gt 0 ]
+    then
+        [ ${m} -gt 1 ] && ms="minutes"
+        [ ${s} -gt 1 ] && ss="seconds"
+        if [ ${s} -gt 0 ]
+        then
+            ret="${m} ${ms} and ${s} ${ss}"
+        else
+            ret="${m} ${ms}"
+        fi
+    else
+        [ ${s} -gt 1 ] && ss="seconds"
+        ret="${s} ${ss}"
+    fi
+
+    REPLY="${ret}"
+    echo "${REPLY}"
+}
+
+# -----------------------------------------------------------------------------
+# email sender
+
+send_email() {
+    local ret= opts=() sender_email="${EMAIL_SENDER}" sender_name=
+    if [ "${SEND_EMAIL}" = "YES" ]
+        then
+
+        if [ ! -z "${EMAIL_SENDER}" ]
+            then
+            if [[ "${EMAIL_SENDER}" =~ ^\".*\"\ \<.*\>$ ]]
+                then
+                # the name includes double quotes
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d '"' -f 2)"
+            elif [[ "${EMAIL_SENDER}" =~ ^\'.*\'\ \<.*\>$ ]]
+                then
+                # the name includes single quotes
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d "'" -f 2)"
+            elif [[ "${EMAIL_SENDER}" =~ ^.*\ \<.*\>$ ]]
+                then
+                # the name does not have any quotes
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)"
+            fi
+        fi
+
+        [ ! -z "${sender_email}" ] && opts+=(-f "${sender_email}")
+        [ ! -z "${sender_name}" ]  && opts+=(-F "${sender_name}")
+
+        if [ "${debug}" = "1" ]
+            then
+            echo >&2 "--- BEGIN sendmail command ---"
+            printf >&2 "%q " "${sendmail}" -t "${opts[@]}"
+            echo >&2
+            echo >&2 "--- END sendmail command ---"
+        fi
+
+        "${sendmail}" -t "${opts[@]}"
+        ret=$?
+
+        if [ ${ret} -eq 0 ]
+        then
+            info "sent email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}'"
+            return 0
+        else
+            error "failed to send email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}' with error code ${ret}."
+            return 1
+        fi
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# pushover sender
+
+send_pushover() {
+    local apptoken="${1}" usertokens="${2}" when="${3}" url="${4}" status="${5}" title="${6}" message="${7}" httpcode sent=0 user priority
+
+    if [ "${SEND_PUSHOVER}" = "YES" -a ! -z "${apptoken}" -a ! -z "${usertokens}" -a ! -z "${title}" -a ! -z "${message}" ]
+        then
+
+        # https://pushover.net/api
+        priority=-2
+        case "${status}" in
+            CLEAR) priority=-1;;   # low priority: no sound or vibration
+            WARNING) priority=0;;  # normal priority: respect quiet hours
+            CRITICAL) priority=1;; # high priority: bypass quiet hours
+            *) priority=-2;;       # lowest priority: no notification at all
+        esac
+
+        for user in ${usertokens}
+        do
+            httpcode=$(docurl \
+                --form-string "token=${apptoken}" \
+                --form-string "user=${user}" \
+                --form-string "html=1" \
+                --form-string "title=${title}" \
+                --form-string "message=${message}" \
+                --form-string "timestamp=${when}" \
+                --form-string "url=${url}" \
+                --form-string "url_title=Open netdata dashboard to view the alarm" \
+                --form-string "priority=${priority}" \
+                https://api.pushover.net/1/messages.json)
+
+            if [ "${httpcode}" = "200" ]
+            then
+                info "sent pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# pushbullet sender
+
+send_pushbullet() {
+    local userapikey="${1}" source_device="${2}" recipients="${3}" url="${4}" title="${5}" message="${6}" httpcode sent=0 user
+    if [ "${SEND_PUSHBULLET}" = "YES" -a ! -z "${userapikey}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://docs.pushbullet.com/#create-push
+        for user in ${recipients}
+        do
+            httpcode=$(docurl \
+              --header 'Access-Token: '${userapikey}'' \
+              --header 'Content-Type: application/json' \
+              --data-binary  @<(cat <<EOF
+                              {"title": "${title}",
+                              "type": "link",
+                              "email": "${user}",
+                              "body": "$( echo -n ${message})",
+                              "url": "${url}",
+                              "source_device_iden": "${source_device}"}
+EOF
+               ) "https://api.pushbullet.com/v2/pushes" -X POST)
+
+            if [ "${httpcode}" = "200" ]
+            then
+                info "sent pushbullet notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send pushbullet notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# kafka sender
+
+send_kafka() {
+    local httpcode sent=0 
+    if [ "${SEND_KAFKA}" = "YES" ]
+        then
+            httpcode=$(docurl -X POST \
+                --data "{host_ip:\"${KAFKA_SENDER_IP}\",when:${when},name:\"${name}\",chart:\"${chart}\",family:\"${family}\",status:\"${status}\",old_status:\"${old_status}\",value:${value},old_value:${old_value},duration:${duration},non_clear_duration:${non_clear_duration},units:\"${units}\",info:\"${info}\"}" \
+                "${KAFKA_URL}")
+
+            if [ "${httpcode}" = "204" ]
+            then
+                info "sent kafka data for: ${host} ${chart}.${name} is ${status} and ip '${KAFKA_SENDER_IP}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send kafka data for: ${host} ${chart}.${name} is ${status} and ip '${KAFKA_SENDER_IP}' with HTTP error code ${httpcode}."
+            fi
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# pagerduty.com sender
+
+send_pd() {
+    local recipients="${1}" sent=0
+    unset t
+    case ${status} in
+        CLEAR)    t='resolve';;
+        WARNING)  t='trigger';;
+        CRITICAL) t='trigger';;
+    esac
+
+    if [ ${SEND_PD} = "YES" -a ! -z "${t}" ]
+        then
+        for PD_SERVICE_KEY in ${recipients}
+        do
+            d="${status} ${name} = ${value_string} - ${host}, ${family}"
+            ${pd_send} -k ${PD_SERVICE_KEY} \
+                       -t ${t} \
+                       -d "${d}" \
+                       -i ${host}:${chart}:${name} \
+                       -f 'info'="${info}" \
+                       -f 'value_w_units'="${value_string}" \
+                       -f 'when'="${when}" \
+                       -f 'duration'="${duration}" \
+                       -f 'roles'="${roles}" \
+                       -f 'host'="${host}" \
+                       -f 'unique_id'="${unique_id}" \
+                       -f 'alarm_id'="${alarm_id}" \
+                       -f 'event_id'="${event_id}" \
+                       -f 'name'="${name}" \
+                       -f 'chart'="${chart}" \
+                       -f 'family'="${family}" \
+                       -f 'status'="${status}" \
+                       -f 'old_status'="${old_status}" \
+                       -f 'value'="${value}" \
+                       -f 'old_value'="${old_value}" \
+                       -f 'src'="${src}" \
+                       -f 'non_clear_duration'="${non_clear_duration}" \
+                       -f 'units'="${units}"
+            retval=$?
+            if [ ${retval} -eq 0 ]
+                then
+                    info "sent pagerduty.com notification for host ${host} ${chart}.${name} using service key ${PD_SERVICE_KEY::-26}....: ${d}"
+                    sent=$((sent + 1))
+                else
+                    error "failed to send pagerduty.com notification for ${host} ${chart}.${name} using service key ${PD_SERVICE_KEY::-26}.... (error code ${retval}): ${d}"
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# twilio sender
+
+send_twilio() {
+    local accountsid="${1}" accounttoken="${2}" twilionumber="${3}" recipients="${4}"  title="${5}" message="${6}" httpcode sent=0 user
+    if [ "${SEND_TWILIO}" = "YES" -a ! -z "${accountsid}" -a ! -z "${accounttoken}" -a ! -z "${twilionumber}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://www.twilio.com/packages/labs/code/bash/twilio-sms
+        for user in ${recipients}
+        do
+            httpcode=$(docurl -X POST \
+                --data-urlencode "From=${twilionumber}" \
+                --data-urlencode "To=${user}" \
+                --data-urlencode "Body=${title} ${message}" \
+                -u "${accountsid}:${accounttoken}" \
+                "https://api.twilio.com/2010-04-01/Accounts/${accountsid}/Messages.json")
+
+            if [ "${httpcode}" = "201" ]
+            then
+                info "sent Twilio SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send Twilio SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+
+# -----------------------------------------------------------------------------
+# hipchat sender
+
+send_hipchat() {
+    local authtoken="${1}" recipients="${2}" message="${3}" httpcode sent=0 room color sender msg_format notify
+
+    # remove <small></small> from the message
+    message="${message//<small>/}"
+    message="${message//<\/small>/}"
+
+    if [ "${SEND_HIPCHAT}" = "YES" -a ! -z "${HIPCHAT_SERVER}" -a ! -z "${authtoken}" -a ! -z "${recipients}" -a ! -z "${message}" ]
+    then
+        # A label to be shown in addition to the sender's name
+        # Valid length range: 0 - 64. 
+        sender="netdata"
+
+        # Valid values: html, text.
+        # Defaults to 'html'.
+        msg_format="html"
+
+        # Background color for message. Valid values: yellow, green, red, purple, gray, random. Defaults to 'yellow'.
+        case "${status}" in
+            WARNING)  color="yellow" ;;
+            CRITICAL) color="red" ;;
+            CLEAR)    color="green" ;;
+            *)        color="gray" ;;
+        esac
+
+        # Whether this message should trigger a user notification (change the tab color, play a sound, notify mobile phones, etc).
+        # Each recipient's notification preferences are taken into account.
+        # Defaults to false.
+        notify="true"
+
+        for room in ${recipients}
+        do
+            httpcode=$(docurl -X POST \
+                    -H "Content-type: application/json" \
+                    -H "Authorization: Bearer ${authtoken}" \
+                    -d "{\"color\": \"${color}\", \"from\": \"${host}\", \"message_format\": \"${msg_format}\", \"message\": \"${message}\", \"notify\": \"${notify}\"}" \
+                    "https://${HIPCHAT_SERVER}/v2/room/${room}/notification")
+ 
+            if [ "${httpcode}" = "204" ]
+            then
+                info "sent HipChat notification for: ${host} ${chart}.${name} is ${status} to '${room}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send HipChat notification for: ${host} ${chart}.${name} is ${status} to '${room}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+
+# -----------------------------------------------------------------------------
+# messagebird sender
+
+send_messagebird() {
+    local accesskey="${1}" messagebirdnumber="${2}" recipients="${3}"  title="${4}" message="${5}" httpcode sent=0 user
+    if [ "${SEND_MESSAGEBIRD}" = "YES" -a ! -z "${accesskey}" -a ! -z "${messagebirdnumber}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://developers.messagebird.com/docs/messaging
+        for user in ${recipients}
+        do
+            httpcode=$(docurl -X POST \
+                --data-urlencode "originator=${messagebirdnumber}" \
+                --data-urlencode "recipients=${user}" \
+                --data-urlencode "body=${title} ${message}" \
+		        --data-urlencode "datacoding=auto" \
+                -H "Authorization: AccessKey ${accesskey}" \
+                "https://rest.messagebird.com/messages")
+
+            if [ "${httpcode}" = "201" ]
+            then
+                info "sent Messagebird SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send Messagebird SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# kavenegar sender
+
+send_kavenegar() {
+    local API_KEY="${1}" kavenegarsender="${2}" recipients="${3}"  title="${4}" message="${5}" httpcode sent=0 user
+    if [ "${SEND_KAVENEGAR}" = "YES" -a ! -z "${API_KEY}" -a ! -z "${kavenegarsender}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        # http://api.kavenegar.com/v1/{API-KEY}/sms/send.json
+        for user in ${recipients}
+        do
+            httpcode=$(docurl -X POST http://api.kavenegar.com/v1/${API_KEY}/sms/send.json \
+                --data-urlencode "sender=${kavenegarsender}" \
+                --data-urlencode "receptor=${user}" \
+                --data-urlencode "message=${title} ${message}")
+
+            if [ "${httpcode}" = "201" ]
+            then
+                info "sent Kavenegar SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send Kavenegar SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# telegram sender
+
+send_telegram() {
+    local bottoken="${1}" chatids="${2}" message="${3}" httpcode sent=0 chatid emoji disableNotification=""
+
+    if [ "${status}" = "CLEAR" ]; then disableNotification="--data-urlencode disable_notification=true"; fi
+    
+    case "${status}" in
+        WARNING)  emoji="⚠️" ;;
+        CRITICAL) emoji="🔴" ;;
+        CLEAR)    emoji="✅" ;;
+        *)        emoji="⚪️" ;;
+    esac
+
+    if [ "${SEND_TELEGRAM}" = "YES" -a ! -z "${bottoken}" -a ! -z "${chatids}" -a ! -z "${message}" ];
+    then
+        for chatid in ${chatids}
+        do
+            # https://core.telegram.org/bots/api#sendmessage
+            httpcode=$(docurl ${disableNotification} \
+                --data-urlencode "parse_mode=HTML" \
+                --data-urlencode "disable_web_page_preview=true" \
+                --data-urlencode "text=${emoji} ${message}" \
+                "https://api.telegram.org/bot${bottoken}/sendMessage?chat_id=${chatid}")
+
+            if [ "${httpcode}" = "200" ]
+            then
+                info "sent telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}'"
+                sent=$((sent + 1))
+            elif [ "${httpcode}" = "401" ]
+            then
+                error "failed to send telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}': Wrong bot token."
+            else
+                error "failed to send telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# Microsoft Team sender
+
+send_msteam() {
+
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_MSTEAM}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  icon="${MSTEAM_ICON_WARNING}" && color="${MSTEAM_COLOR_WARNING}";;
+        CRITICAL) icon="${MSTEAM_ICON_CRITICAL}" && color="${MSTEAM_COLOR_CRITICAL}";;
+        CLEAR)    icon="${MSTEAM_ICON_CLEAR}" && color="${MSTEAM_COLOR_CLEAR}";;
+        *)        icon="${MSTEAM_ICON_DEFAULT}" && color="${MSTEAM_COLOR_DEFAULT}";;
+    esac
+
+    for channel in ${channels}
+    do
+        ## More details are available here regarding the payload syntax options : https://docs.microsoft.com/en-us/outlook/actionable-messages/message-card-reference
+        ## Online designer : https://acdesignerbeta.azurewebsites.net/
+        payload="$(cat <<EOF
+        {
+            "@context": "http://schema.org/extensions",
+            "@type": "MessageCard",
+            "themeColor": "${color}",
+            "title": "$icon Alert ${status} from netdata for ${host}",
+            "text": "${host} ${status_message}, ${chart} (_${family}_), *${alarm}*",
+            "potentialAction": [
+            {
+                "@type": "OpenUri",
+                "name": "Netdata",
+                "targets": [
+                { "os": "default", "uri": "${goto_url}" }
+                ]
+            }
+            ]
+        }
+EOF
+        )"
+
+	# Replacing in the webhook CHANNEL string by the MS Teams channel name from conf file.
+	webhook="${webhook//CHANNEL/${channel}}"
+
+	httpcode=$(docurl -H "Content-Type: application/json" -d "${payload}" "${webhook}")
+
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent Microsoft team notification for: ${host} ${chart}.${name} is ${status} to '${webhook}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send Microsoft team notification for: ${host} ${chart}.${name} is ${status} to '${webhook}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+
+# slack sender
+
+send_slack() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_SLACK}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "username": "netdata on ${host}",
+            "icon_url": "${images_base_url}/images/seo-performance-128.png",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "attachments": [
+                {
+                    "fallback": "${alarm} - ${chart} (${family}) - ${info}",
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "short": true
+                        },
+                        {
+                            "title": "${family}",
+                            "short": true
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "footer": "by <${goto_url}|${this_host}>",
+                    "ts": ${when}
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+
+# -----------------------------------------------------------------------------
+# rocketchat sender
+
+send_rocketchat() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_ROCKETCHAT}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "alias": "netdata on ${host}",
+            "avatar": "${images_base_url}/images/seo-performance-128.png",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "attachments": [
+                {
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "short": true,
+                            "value": "chart"
+                        },
+                        {
+                            "title": "${family}",
+                            "short": true,
+                            "value": "family"
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "ts": "${when}"
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent rocketchat notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send rocketchat notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# alerta sender
+
+send_alerta() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel severity content
+
+    [ "${SEND_ALERTA}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  severity="warning" ;;
+        CRITICAL) severity="critical" ;;
+        CLEAR)    severity="cleared" ;;
+        *)        severity="unknown" ;;
+    esac
+
+    info=$( echo -n ${info})
+
+    # the "event" property must be unique and repetible between states to let alerta do automatic correlation using severity value
+    for channel in ${channels}
+    do
+        content="{"
+        content="$content \"environment\": \"${channel}\","
+        content="$content \"service\": [\"${host}\"],"
+        content="$content \"resource\": \"${host}\","
+        content="$content \"event\": \"${name}.${chart} (${family})\","
+        content="$content \"severity\": \"${severity}\","
+        content="$content \"value\": \"${alarm}\","
+        content="$content \"text\": \"${info}\""
+        content="$content }"
+
+
+        httpcode=$(docurl -X POST "${webhook}/alert" -H "Content-Type: application/json" -H "Authorization: Key $ALERTA_API_KEY" -d "$content" )
+
+        if [[ "${httpcode}" = "200" || "${httpcode}" = "201" ]]
+        then
+            info "sent alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# flock sender
+
+send_flock() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_FLOCK}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        httpcode=$(docurl -X POST "${webhook}" -H "Content-Type: application/json" -d "{
+            \"sendAs\": {
+                \"name\" : \"netdata on ${host}\",
+                \"profileImage\" : \"${images_base_url}/images/seo-performance-128.png\"
+            },
+            \"text\": \"${host} *${status_message}*\",
+            \"timestamp\": \"${when}\",
+            \"attachments\": [
+                {
+                    \"description\": \"${chart} (${family}) - ${info}\",
+                    \"color\": \"${color}\",
+                    \"title\": \"${alarm}\",
+                    \"url\": \"${goto_url}\",
+                    \"text\": \"${info}\",
+                    \"views\": {
+                        \"image\": {
+                            \"original\": { \"src\": \"${image}\", \"width\": 400, \"height\": 400 },
+                            \"thumbnail\": { \"src\": \"${image}\", \"width\": 50, \"height\": 50 },
+                            \"filename\": \"${image}\"
+                            }
+                    }
+                }
+            ]
+        }" )
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent flock notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send flock notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# discord sender
+
+send_discord() {
+    local webhook="${1}/slack" channels="${2}" httpcode sent=0 channel color payload username
+
+    [ "${SEND_DISCORD}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        username="netdata on ${host}"
+        [ ${#username} -gt 32 ] && username="${username:0:29}..."
+
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "username": "${username}",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "icon_url": "${images_base_url}/images/seo-performance-128.png",
+            "attachments": [
+                {
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "value": "${family}"
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "footer_icon": "${images_base_url}/images/seo-performance-128.png",
+                    "footer": "${this_host}",
+                    "ts": ${when}
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent discord notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send discord notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# fleep sender
+
+send_fleep() {
+    local httpcode sent=0 webhooks="${1}" data message
+    if [ "${SEND_FLEEP}" = "YES" ] ; then
+            message="${host} ${status_message}, \`${chart}\` (${family}), *${alarm}*\\n${info}"
+
+            for hook in "${webhooks}" ; do
+                data="{ "
+                data="${data} 'message': '${message}', "
+                data="${data} 'user': '${FLEEP_SENDER}' "
+                data="${data} }"
+
+                httpcode=$(docurl -X POST --data "${data}" "https://fleep.io/hook/${hook}")
+
+                if [ "${httpcode}" = "200" ] ; then
+                    info "sent fleep data for: ${host} ${chart}.${name} is ${status} and user '${FLEEP_SENDER}'"
+                    sent=$((sent + 1))
+                else
+                    error "failed to send fleep data for: ${host} ${chart}.${name} is ${status} and user '${FLEEP_SENDER}' with HTTP error code ${httpcode}."
+                fi
+            done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# irc sender
+
+send_irc() {
+    local NICKNAME="${1}" REALNAME="${2}" CHANNELS="${3}" NETWORK="${4}" SERVERNAME="${5}" MESSAGE="${6}" sent=0 channel color send_alarm reply_codes error
+    
+    if [ "${SEND_IRC}" = "YES" -a ! -z "${NICKNAME}" -a ! -z "${REALNAME}" -a ! -z "${CHANNELS}" -a ! -z "${NETWORK}" -a ! -z "${SERVERNAME}" ]
+    then
+        case "${status}" in
+            WARNING)  color="warning" ;;
+            CRITICAL) color="danger" ;;
+            CLEAR)    color="good" ;;
+            *)        color="#777777" ;;
+        esac
+
+        for CHANNEL in ${CHANNELS}
+        do
+            error=0
+            send_alarm=$(echo -e "USER ${NICKNAME} guest ${REALNAME} ${SERVERNAME}\nNICK ${NICKNAME}\nJOIN ${CHANNEL}\nPRIVMSG ${CHANNEL} :${MESSAGE}\nQUIT\n" \ | nc ${NETWORK} 6667)
+            reply_codes=$(echo ${send_alarm} | cut -d ' ' -f 2 | grep -o '[0-9]*')
+            for code in ${reply_codes}
+            do
+                [ "${code}" -ge 400 -a "${code}" -le 599 ] && error=1 && break
+            done
+
+            if [ "${error}" -eq 0 ]
+            then
+                info "sent irc notification for: ${host} ${chart}.${name} is ${status} to '${CHANNEL}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send irc notification for: ${host} ${chart}.${name} is ${status} to '${CHANNEL}', with error code ${code}." 
+            fi
+        done
+    fi
+    
+    [ ${sent} -gt 0 ] && return 0
+    
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# Amazon SNS sender
+
+send_awssns() {
+    local targets="${1}" message='' sent=0 region=''
+    local default_format="${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+    [ "${SEND_AWSSNS}" = "YES" ] || return 1
+
+    message=${AWSSNS_MESSAGE_FORMAT:-${default_format}}
+
+    for target in ${targets} ; do
+        # Extract the region from the target ARN.  We need to explicitly specify the region so that it matches up correctly.
+        region="$(echo ${target} | cut -f 4 -d ':')"
+        ${aws} sns publish --region "${region}" --subject "${host} ${status_message} - ${name//_/ } - ${chart}" --message "${message}" --target-arn ${target} &>/dev/null
+        if [ $? = 0 ]; then
+            info "sent Amazon SNS notification for: ${host} ${chart}.${name} is ${status} to '${target}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send Amazon SNS notification for: ${host} ${chart}.${name} is ${status} to '${target}'" 
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# syslog sender
+
+send_syslog() {
+    local facility=${SYSLOG_FACILITY:-"local6"} level='info' targets="${1}"
+    local priority='' message='' host='' port='' prefix=''
+    local temp1='' temp2=''
+
+    [ "${SEND_SYSLOG}" = "YES" ] || return 1
+
+    if [ "${status}" = "CRITICAL" ] ; then
+        level='crit'
+    elif [ "${status}" = "WARNING" ] ; then
+        level='warning'
+    fi
+
+    for target in ${targets} ; do
+        priority="${facility}.${level}"
+        message=''
+        host=''
+        port=''
+        prefix=''
+        temp1=''
+        temp2=''
+
+        prefix=$(echo ${target} | cut -d '/' -f 2)
+        temp1=$(echo ${target} | cut -d '/' -f 1)
+
+        if [ ${prefix} != ${temp1} ] ; then
+            if (echo ${temp1} | grep -q '@' ) ; then
+                temp2=$(echo ${temp1} | cut -d '@' -f 1)
+                host=$(echo ${temp1} | cut -d '@' -f 2)
+
+                if [ ${temp2} != ${host} ] ; then
+                    priority=${temp2}
+                fi
+
+                port=$(echo ${host} | rev | cut -d ':' -f 1 | rev)
+
+                if ( echo ${host} | grep -E -q '\[.*\]' ) ; then
+                    if ( echo ${port} | grep -q ']' ) ; then
+                        port=''
+                    else
+                        host=$(echo ${host} | rev | cut -d ':' -f 2- | rev)
+                    fi
+                else
+                    if [ ${port} = ${host} ] ; then
+                        port=''
+                    else
+                        host=$(echo ${host} | cut -d ':' -f 1)
+                    fi
+                fi
+            else
+                priority=${temp1}
+            fi
+        fi
+
+        message="${prefix} ${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+        if [ ${host} ] ; then
+            logger_options="${logger_options} -n ${host}"
+            if [ ${port} ] ; then
+                logger_options="${logger_options} -P ${port}"
+            fi
+        fi
+
+        ${logger} -p ${priority} ${logger_options} "${message}"
+    done
+
+    return $?
+}
+
+
+# -----------------------------------------------------------------------------
+# prepare the content of the notification
+
+# the url to send the user on click
+urlencode "${host}" >/dev/null; url_host="${REPLY}"
+urlencode "${chart}" >/dev/null; url_chart="${REPLY}"
+urlencode "${family}" >/dev/null; url_family="${REPLY}"
+urlencode "${name}" >/dev/null; url_name="${REPLY}"
+goto_url="${NETDATA_REGISTRY_URL}/goto-host-from-alarm.html?host=${url_host}&chart=${url_chart}&family=${url_family}&alarm=${url_name}&alarm_unique_id=${unique_id}&alarm_id=${alarm_id}&alarm_event_id=${event_id}"
+
+# the severity of the alarm
+severity="${status}"
+
+# the time the alarm was raised
+duration4human ${duration} >/dev/null; duration_txt="${REPLY}"
+duration4human ${non_clear_duration} >/dev/null; non_clear_duration_txt="${REPLY}"
+raised_for="(was ${old_status,,} for ${duration_txt})"
+
+# the key status message
+status_message="status unknown"
+
+# the color of the alarm
+color="grey"
+
+# the alarm value
+alarm="${name//_/ } = ${value_string}"
+
+# the image of the alarm
+image="${images_base_url}/images/seo-performance-128.png"
+
+# prepare the title based on status
+case "${status}" in
+	CRITICAL)
+        image="${images_base_url}/images/alert-128-red.png"
+        status_message="is critical"
+        color="#ca414b"
+        ;;
+
+    WARNING)
+        image="${images_base_url}/images/alert-128-orange.png"
+        status_message="needs attention"
+        color="#ffc107"
+		;;
+
+	CLEAR)
+        image="${images_base_url}/images/check-mark-2-128-green.png"
+    	status_message="recovered"
+		color="#77ca6d"
+		;;
+esac
+
+if [ "${status}" = "CLEAR" ]
+then
+    severity="Recovered from ${old_status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm was raised for ${non_clear_duration_txt})"
+    fi
+
+    # don't show the value when the status is CLEAR
+    # for certain alarms, this value might not have any meaning
+    alarm="${name//_/ } ${raised_for}"
+
+elif [ "${old_status}" = "WARNING" -a "${status}" = "CRITICAL" ]
+then
+    severity="Escalated to ${status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm is raised for ${non_clear_duration_txt})"
+    fi
+
+elif [ "${old_status}" = "CRITICAL" -a "${status}" = "WARNING" ]
+then
+    severity="Demoted to ${status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm is raised for ${non_clear_duration_txt})"
+    fi
+
+else
+    raised_for=
+fi
+
+# prepare HTML versions of elements
+info_html=
+[ ! -z "${info}" ] && info_html=" <small><br/>${info}</small>"
+
+raised_for_html=
+[ ! -z "${raised_for}" ] && raised_for_html="<br/><small>${raised_for}</small>"
+
+# -----------------------------------------------------------------------------
+# send the slack notification
+
+# slack aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_slack "${SLACK_WEBHOOK_URL}" "${to_slack}"
+SENT_SLACK=$?
+
+# -----------------------------------------------------------------------------
+# send the Microsoft notification
+
+# Microsoft team aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_msteam "${MSTEAM_WEBHOOK_URL}" "${to_msteam}"
+SENT_MSTEAM=$?
+
+# -----------------------------------------------------------------------------
+# send the rocketchat notification
+
+# rocketchat aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_rocketchat "${ROCKETCHAT_WEBHOOK_URL}" "${to_rocketchat}"
+SENT_ROCKETCHAT=$?
+
+# -----------------------------------------------------------------------------
+# send the alerta notification
+
+# alerta aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_alerta "${ALERTA_WEBHOOK_URL}" "${to_alerta}"
+SENT_ALERTA=$?
+
+# -----------------------------------------------------------------------------
+# send the flock notification
+
+# flock aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_flock "${FLOCK_WEBHOOK_URL}" "${to_flock}"
+SENT_FLOCK=$?
+
+# -----------------------------------------------------------------------------
+# send the discord notification
+
+# discord aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_discord "${DISCORD_WEBHOOK_URL}" "${to_discord}"
+SENT_DISCORD=$?
+
+# -----------------------------------------------------------------------------
+# send the pushover notification
+
+send_pushover "${PUSHOVER_APP_TOKEN}" "${to_pushover}" "${when}" "${goto_url}" "${status}" "${host} ${status_message} - ${name//_/ } - ${chart}" "
+<font color=\"${color}\"><b>${alarm}</b></font>${info_html}<br/>&nbsp;
+<small><b>${chart}</b><br/>Chart<br/>&nbsp;</small>
+<small><b>${family}</b><br/>Family<br/>&nbsp;</small>
+<small><b>${severity}</b><br/>Severity<br/>&nbsp;</small>
+<small><b>${date}${raised_for_html}</b><br/>Time<br/>&nbsp;</small>
+<a href=\"${goto_url}\">View Netdata</a><br/>&nbsp;
+<small><small>The source of this alarm is line ${src}</small></small>
+"
+
+SENT_PUSHOVER=$?
+
+# -----------------------------------------------------------------------------
+# send the pushbullet notification
+
+send_pushbullet "${PUSHBULLET_ACCESS_TOKEN}" "${PUSHBULLET_SOURCE_DEVICE}" "${to_pushbullet}" "${goto_url}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm}\n
+Severity: ${severity}\n
+Chart: ${chart}\n
+Family: ${family}\n
+$(date -d @${when})\n
+The source of this alarm is line ${src}"
+
+SENT_PUSHBULLET=$?
+
+# -----------------------------------------------------------------------------
+# send the twilio SMS
+
+send_twilio "${TWILIO_ACCOUNT_SID}" "${TWILIO_ACCOUNT_TOKEN}" "${TWILIO_NUMBER}" "${to_twilio}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_TWILIO=$?
+
+# -----------------------------------------------------------------------------
+# send the messagebird SMS
+
+send_messagebird "${MESSAGEBIRD_ACCESS_KEY}" "${MESSAGEBIRD_NUMBER}" "${to_messagebird}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_MESSAGEBIRD=$?
+
+
+# -----------------------------------------------------------------------------
+# send the kavenegar SMS
+
+send_kavenegar "${KAVENEGAR_API_KEY}" "${KAVENEGAR_SENDER}" "${to_kavenegar}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_KAVENEGAR=$?
+
+
+# -----------------------------------------------------------------------------
+# send the telegram.org message
+
+# https://core.telegram.org/bots/api#formatting-options
+send_telegram "${TELEGRAM_BOT_TOKEN}" "${to_telegram}" "${host} ${status_message} - <b>${name//_/ }</b>
+${chart} (${family})
+<a href=\"${goto_url}\">${alarm}</a>
+<i>${info}</i>"
+
+SENT_TELEGRAM=$?
+
+
+# -----------------------------------------------------------------------------
+# send the kafka message
+
+send_kafka
+SENT_KAFKA=$?
+
+
+# -----------------------------------------------------------------------------
+# send the pagerduty.com message
+
+send_pd "${to_pd}"
+SENT_PD=$?
+
+# -----------------------------------------------------------------------------
+# send the fleep message
+
+send_fleep "${to_fleep}"
+SENT_FLEEP=$?
+
+# -----------------------------------------------------------------------------
+# send the irc message
+
+send_irc "${IRC_NICKNAME}" "${IRC_REALNAME}" "${to_irc}" "${IRC_NETWORK}" "${host}" "${host} ${status_message} - ${name//_/ } - ${chart} ----- ${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_IRC=$?
+
+# -----------------------------------------------------------------------------
+# send the custom message
+
+send_custom() {
+    # is it enabled?
+    [ "${SEND_CUSTOM}" != "YES" ] && return 1
+
+    # do we have any sender?
+    [ -z "${1}" ] && return 1
+
+    # call the custom_sender function
+    custom_sender "${@}"
+}
+
+send_custom "${to_custom}"
+SENT_CUSTOM=$?
+
+
+# -----------------------------------------------------------------------------
+# send hipchat message
+
+send_hipchat "${HIPCHAT_AUTH_TOKEN}" "${to_hipchat}" " \
+${host} ${status_message}<br/> \
+<b>${alarm}</b> ${info_html}<br/> \
+<b>${chart}</b> (family <b>${family}</b>)<br/> \
+<b>${date}${raised_for_html}</b><br/> \
+<a href=\\\"${goto_url}\\\">View netdata dashboard</a> \
+(source of alarm ${src}) \
+"
+
+SENT_HIPCHAT=$?
+
+
+# -----------------------------------------------------------------------------
+# send the Amazon SNS message
+
+send_awssns ${to_awssns}
+
+SENT_AWSSNS=$?
+
+
+# -----------------------------------------------------------------------------
+# send the syslog message
+
+send_syslog ${to_syslog}
+
+SENT_SYSLOG=$?
+
+
+# -----------------------------------------------------------------------------
+# send the email
+
+send_email <<EOF
+To: ${to_email}
+Subject: ${host} ${status_message} - ${name//_/ } - ${chart}
+MIME-Version: 1.0
+Content-Type: multipart/alternative; boundary="multipart-boundary"
+${email_thread_headers}
+
+This is a MIME-encoded multipart message
+
+--multipart-boundary
+Content-Type: text/plain; encoding=${EMAIL_CHARSET}
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+${host} ${status_message}
+
+${alarm} ${info}
+${raised_for}
+
+Chart   : ${chart}
+Family  : ${family}
+Severity: ${severity}
+URL     : ${goto_url}
+Source  : ${src}
+Date    : ${date}
+Notification generated on ${this_host}
+
+--multipart-boundary
+Content-Type: text/html; encoding=${EMAIL_CHARSET}
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; box-sizing: border-box; font-size: 14px; margin: 0; padding: 0;">
+<body style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; width: 100% !important; min-height: 100%; line-height: 1.6; background: #f6f6f6; margin:0; padding: 0;">
+<table>
+    <tbody>
+    <tr>
+        <td style="vertical-align: top;" valign="top"></td>
+        <td width="700" style="vertical-align: top; display: block !important; max-width: 700px !important; clear: both !important; margin: 0 auto; padding: 0;" valign="top">
+            <div style="max-width: 700px; display: block; margin: 0 auto; padding: 20px;">
+                <table width="100%" cellpadding="0" cellspacing="0" style="background: #fff; border: 1px solid #e9e9e9;">
+                    <tbody>
+                    <tr>
+                        <td bgcolor="#eee" style="padding: 5px 20px 5px 20px; background-color: #eee;">
+                            <div style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 20px; color: #777; font-weight: bold;">netdata notification</div>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td bgcolor="${color}" style="font-size: 16px; vertical-align: top; font-weight: 400; text-align: center; margin: 0; padding: 10px; color: #ffffff; background: ${color} !important; border: 1px solid ${color}; border-top-color: ${color};" align="center" valign="top">
+                            <h1 style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-weight: 400; margin: 0;">${host} ${status_message}</h1>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td style="vertical-align: top;" valign="top">
+                            <div style="margin: 0; padding: 20px; max-width: 700px;">
+                                <table width="100%" cellpadding="0" cellspacing="0" style="max-width:700px">
+                                    <tbody>
+                                    <tr>
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding:0 0 20px;" align="left" valign="top">
+                                            <span>${chart}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Chart</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span><b>${alarm}</b>${info_html}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Alarm</span>
+                                        </td>
+                                    </tr>
+                                    <tr>
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${family}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Family</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${severity}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Severity</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top"><span>${date}</span>
+                                            <span>${raised_for_html}</span> <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Time</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;">
+                                            <a href="${goto_url}" style="font-size: 14px; color: #ffffff; text-decoration: none; line-height: 1.5; font-weight: bold; text-align: center; display: inline-block; text-transform: capitalize; background: #35568d; border-width: 1px; border-style: solid; border-color: #2b4c86; margin: 0; padding: 10px 15px;" target="_blank">View Netdata</a>
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 11px; vertical-align: top; margin: 0; padding: 10px 0 0 0; color: #666666;" align="center" valign="bottom">The source of this alarm is line <code>${src}</code><br/>(alarms are configurable, edit this file to adapt the alarm to your needs)
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 12px; vertical-align: top; margin:0; padding: 20px 0 0 0; color: #666666; border-top: 1px solid #f0f0f0;" align="center" valign="bottom">Sent by
+                                            <a href="https://mynetdata.io/" target="_blank">netdata</a>, the real-time performance and health monitoring, on <code>${this_host}</code>.
+                                        </td>
+                                    </tr>
+                                    </tbody>
+                                </table>
+                            </div>
+                        </td>
+                    </tr>
+                    </tbody>
+                </table>
+            </div>
+        </td>
+    </tr>
+    </tbody>
+</table>
+</body>
+</html>
+--multipart-boundary--
+EOF
+
+SENT_EMAIL=$?
+
+# -----------------------------------------------------------------------------
+# let netdata know
+
+if [   ${SENT_EMAIL}        -eq 0 \
+    -o ${SENT_PUSHOVER}     -eq 0 \
+    -o ${SENT_TELEGRAM}     -eq 0 \
+    -o ${SENT_SLACK}        -eq 0 \
+    -o ${SENT_MSTEAM}       -eq 0 \
+    -o ${SENT_ROCKETCHAT}   -eq 0 \
+    -o ${SENT_ALERTA}       -eq 0 \
+    -o ${SENT_FLOCK}        -eq 0 \
+    -o ${SENT_DISCORD}      -eq 0 \
+    -o ${SENT_TWILIO}       -eq 0 \
+    -o ${SENT_HIPCHAT}      -eq 0 \
+    -o ${SENT_MESSAGEBIRD}  -eq 0 \
+    -o ${SENT_KAVENEGAR}    -eq 0 \
+    -o ${SENT_PUSHBULLET}   -eq 0 \
+    -o ${SENT_KAFKA}        -eq 0 \
+    -o ${SENT_PD}           -eq 0 \
+    -o ${SENT_FLEEP}        -eq 0 \
+    -o ${SENT_IRC}          -eq 0 \
+    -o ${SENT_AWSSNS}       -eq 0 \
+    -o ${SENT_CUSTOM}       -eq 0 \
+    -o ${SENT_SYSLOG}       -eq 0 \
+    ]
+    then
+    # we did send something
+    exit 0
+fi
+
+# we did not send anything
+exit 1
diff --git a/plugins.d/alarm-test.sh b/health/notifications/alarm-test.sh
index 9df5361a9..828aa756b 100755
--- a/plugins.d/alarm-test.sh
+++ b/health/notifications/alarm-test.sh
@@ -3,10 +3,10 @@
 # netdata
 # real-time performance and health monitoring, done right!
 # (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
-# GPL v3+
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 # Script to test alarm notifications for netdata
 
 dir="$(dirname "${0}")"
-${dir}/alarm-notify.sh test "${1}"
+"${dir}/alarm-notify.sh" test "${1}"
 exit $?
diff --git a/health/notifications/alerta/Makefile.inc b/health/notifications/alerta/Makefile.inc
new file mode 100644
index 000000000..32fa08947
--- /dev/null
+++ b/health/notifications/alerta/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	alerta/README.md \
+	alerta/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/alerta/README.md b/health/notifications/alerta/README.md
new file mode 100644
index 000000000..bbed23bac
--- /dev/null
+++ b/health/notifications/alerta/README.md
@@ -0,0 +1,236 @@
+# alerta.io notifications
+
+The alerta monitoring system is a tool used to consolidate and de-duplicate alerts from multiple sources for quick ‘at-a-glance’ visualisation. With just one system you can monitor alerts from many other monitoring tools on a single screen.
+
+![](http://docs.alerta.io/en/latest/_images/alerta-screen-shot-3.png)
+
+When receiving alerts from multiple sources you can quickly become overwhelmed. With Alerta any alert with the same environment and resource is considered a duplicate if it has the same severity. If it has a different severity it is correlated so that you only see the most recent one. Awesome.
+
+main site http://www.alerta.io
+
+We can send Netadata alarms to Alerta so yo can see in one place alerts coming from many Netdata hosts or also from a multihost Netadata configuration.\
+The big advantage over other notifications method is that you have in a main view all active alarms with only las state, but you can also search history.
+
+## Setting up an Alerta server with Ubuntu 16.04
+
+Here we will set a basic Alerta server to test it with Netdata alerts.\
+More advanced configurations are out os scope of this tutorial.
+
+source: http://alerta.readthedocs.io/en/latest/gettingstarted/tutorial-1-deploy-alerta.html
+
+I recommend to set up the server in a separated server, VM or container.\
+If you have other Nginx or Apache server in your organization, I recommend to proxy to this new server.
+
+Set us as root for easiest working
+```
+sudo su
+cd
+```
+
+Install Mongodb https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/
+```
+apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2930ADAE8CAF5059EE73BB4B58712A2291FA4AD5
+echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-3.6.list
+apt-get update
+apt-get install -y mongodb-org
+systemctl enable mongod
+systemctl start mongod
+systemctl status mongod
+```
+
+Install Nginx and Alerta uwsgi
+```
+apt-get install -y python-pip python-dev nginx
+pip install alerta-server uwsgi
+```
+
+Install web console
+```
+cd /var/www/html
+mkdir alerta
+cd alerta
+wget -q -O - https://github.com/alerta/angular-alerta-webui/tarball/master | tar zxf -
+mv alerta*/app/* .
+cd
+```
+## Services configuration
+
+Create a wsgi python file
+```
+nano /var/www/wsgi.py
+```
+fill with
+```
+from alerta import app
+```
+Create uWsgi configuration file
+```
+nano /etc/uwsgi.ini
+```
+fill with
+```
+[uwsgi]
+chdir = /var/www
+mount = /alerta/api=wsgi.py
+callable = app
+manage-script-name = true
+
+master = true
+processes = 5
+logger = syslog:alertad
+
+socket = /tmp/uwsgi.sock
+chmod-socket = 664
+uid = www-data
+gid = www-data
+vacuum = true
+
+die-on-term = true
+```
+Create a systemd configuration file
+```
+nano /etc/systemd/system/uwsgi.service
+```
+fill with
+```
+[Unit]
+Description=uWSGI service
+
+[Service]
+ExecStart=/usr/local/bin/uwsgi --ini /etc/uwsgi.ini
+
+[Install]
+WantedBy=multi-user.target
+```
+enable service
+```
+systemctl start uwsgi
+systemctl status uwsgi
+systemctl enable uwsgi
+```
+Configure nginx to serve Alerta as a uWsgi application on /alerta/api
+```
+nano /etc/nginx/sites-enabled/default
+```
+fill with
+```
+server {
+        listen 80 default_server;
+        listen [::]:80 default_server;
+
+        location /alerta/api { try_files $uri @alerta/api; }
+        location @alerta/api {
+            include uwsgi_params;
+            uwsgi_pass unix:/tmp/uwsgi.sock;
+            proxy_set_header Host $host:$server_port;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        }
+
+        location / {
+            root /var/www/html;
+        }
+}
+```
+restart nginx
+```
+service nginx restart
+```
+## Config web console
+```
+nano /var/www/html/config.js
+```
+fill with
+```
+'use strict';
+
+angular.module('config', [])
+  .constant('config', {
+    'endpoint'    : "/alerta/api",
+    'provider'    : "basic",
+    'colors'      : {},
+    'severity'    : {},
+    'audio'       : {}
+  });
+```
+
+## Config Alerta server
+
+source: http://alerta.readthedocs.io/en/latest/configuration.html
+
+Create a random string to use as SECRET_KEY
+```
+cat /dev/urandom | tr -dc A-Za-z0-9_\!\@\#\$\%\^\&\*\(\)-+= | head -c 32 && echo
+```
+will output something like
+```
+0pv8Bw7VKfW6avDAz_TqzYPme_fYV%7g
+```
+Edit alertad.conf
+```
+nano /etc/alertad.conf
+```
+fill with (take care about all single quotes)
+```
+BASE_URL='/alerta/api'
+AUTH_REQUIRED=True
+SECRET_KEY='0pv8Bw7VKfW6avDAz_TqzYPme_fYV%7g'
+ADMIN_USERS=['<here put you email for future login>']
+```
+
+restart
+```
+systemctl restart uwsgi
+```
+
+* go to console to http://yourserver/alerta/
+* go to Login -> Create an account
+* use your email for login so and administrative account will be created
+
+## create an API KEY
+
+You need an API KEY to send messages from any source.\
+To create an API KEY go to Configuration -> Api Keys\
+Then create a API KEY with write permisions.
+
+## configure Netdata to send alarms to Alerta
+
+On your system run:
+
+```
+/etc/netdata/edit-config health_alarm_notify.conf
+```
+
+and set
+
+```
+# enable/disable sending alerta notifications
+SEND_ALERTA="YES"
+
+# here set your alerta server API url
+# this is the API url you defined when installed Alerta server, 
+# it is the same for all users. Do not include last slash.
+ALERTA_WEBHOOK_URL="http://yourserver/alerta/api"
+
+# Login with an administrative user to you Alerta server and create an API KEY
+# with write permissions.
+ALERTA_API_KEY="you last created API KEY"
+
+# you can define environments in /etc/alertad.conf option ALLOWED_ENVIRONMENTS
+# standard environments are Production and Development
+# if a role's recipients are not configured, a notification will be send to
+# this Environment (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_ALERTA="Production"
+```
+
+## Test alarms
+
+We can test alarms with standard
+```
+sudo su -s /bin/bash netdata
+/opt/netdata/netdata-plugins/plugins.d/alarm-notify.sh test
+exit
+```
+But the problem is that Netdata will send 3 alarms, and because last alarm is "CLEAR" you will not se them in main Alerta page, you need to select to see "closed" alarma in top-right lookup.
+
+A little change in alarm-notify.sh that let us test each state one by one will be useful.
\ No newline at end of file
diff --git a/health/notifications/awssns/Makefile.inc b/health/notifications/awssns/Makefile.inc
new file mode 100644
index 000000000..3d8e58ff8
--- /dev/null
+++ b/health/notifications/awssns/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	awssns/README.md \
+	awssns/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/awssns/README.md b/health/notifications/awssns/README.md
new file mode 100644
index 000000000..d040d2d29
--- /dev/null
+++ b/health/notifications/awssns/README.md
@@ -0,0 +1,31 @@
+# Amazon SNS notifications
+
+As part of it's AWS suite, Amazon provides a notification broker service called 'Simple Notification Service' or SNS.  Amazon SNS works kind of similarly to Netdata's own notification system, allowing dispatch of a single notification to multiple subscribers of different types.  Among other things, SNS supports sending notifications to:
+
+* Email addresses.
+* Mobile Phones via SMS.
+* HTTP or HTTPS web hooks.
+* AWS Lambda functions.
+* AWS SQS queues.
+* Mobile applications via push notifications.
+
+To get this working, you will need:
+
+* The Amazon Web Services CLI tools.  Most distributions provide these with the package name `awscli`.
+* An actual home directory for the user you run Netdata as, instead of just using `/` as a home directory.  Setup of this is distribution specific.  `/var/lib/netdata` is the recommended directory (because the permissions will already be correct) if you are using a dedicated user (which is how most distributions work).
+* An Amazon SNS topic to send notifications to with one or more subscribers.  The [Getting Started](https://docs.aws.amazon.com/sns/latest/dg/GettingStarted.html) section of the Amazon SNS documentation covers the basics of how to set this up.  Make note of the Topic ARN when you create the topic.
+* While not mandatory, it is highly recommended to create a dedicated IAM user on your account for netdata to send notifications.  This user needs to have programmatic access, and should only allow access to SNS.  If you're really paranoid, you can create one for each system or group of systems.
+
+Once you have all the above, run the follwing command as the user netdata runs under:
+
+    aws configure
+
+THis will prompt you for the access key and secret key for accessing Amazon SNS (as well as the default region and output format, but you can leave those blank because we don't use them).
+
+Once that's done, you're ready to go and can specify the desired topic ARN as a recipient.
+
+Notes:
+
+   * Netdata's native email notification support is far better in almost all respects than it's support through Amazon SNS.  If you want email notifications, use the native support, not SNS.
+    * If you need to change the notification format for SNS notifications, you can do so by specifying the format in `AWSSNS_MESSAGE_FORMAT` in the configuration.  This variable supports all the same vairiables you can use in custom notifications.
+    * While Amazon SNS supports sending differently formatted messages for different delivery methods, netdata does not currently support this functionality.
\ No newline at end of file
diff --git a/health/notifications/discord/Makefile.inc b/health/notifications/discord/Makefile.inc
new file mode 100644
index 000000000..03d0339ab
--- /dev/null
+++ b/health/notifications/discord/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	discord/README.md \
+	discord/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/discord/README.md b/health/notifications/discord/README.md
new file mode 100644
index 000000000..5889ea099
--- /dev/null
+++ b/health/notifications/discord/README.md
@@ -0,0 +1,44 @@
+# Discordapp.com notifications
+
+This is what you will get:
+
+![image](https://cloud.githubusercontent.com/assets/7321975/22215935/b49ede7e-e162-11e6-98d0-ae8541e6b92e.png)
+
+You need:
+
+1. The **incoming webhook URL** as given by Discord. Create a webhook by following the official [Discord documentation](https://support.discordapp.com/hc/en-us/articles/228383668-Intro-to-Webhooks). You can use the same on all your netdata servers (or you can have multiple if you like - your decision).
+2. One or more Discord channels to post the messages to.
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# sending discord notifications
+
+# note: multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending discord notifications
+SEND_DISCORD="YES"
+
+# Create a webhook by following the official documentation -
+# https://support.discordapp.com/hc/en-us/articles/228383668-Intro-to-Webhooks
+DISCORD_WEBHOOK_URL="https://discordapp.com/api/webhooks/XXXXXXXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+
+# if a role's recipients are not configured, a notification will be send to
+# this discord channel (empty = do not send a notification for unconfigured
+# roles):
+DEFAULT_RECIPIENT_DISCORD="alarms"
+
+```
+
+You can define multiple channels like this: `alarms systems`.
+You can give different channels per **role** using these (at the same file):
+
+```
+role_recipients_discord[sysadmin]="systems"
+role_recipients_discord[dba]="databases systems"
+role_recipients_discord[webmaster]="marketing development"
+```
+
+The keywords `systems`, `databases`, `marketing`, `development` are discordapp.com channels (they should already exist within your discord server).
diff --git a/health/notifications/email/Makefile.inc b/health/notifications/email/Makefile.inc
new file mode 100644
index 000000000..62dd18a62
--- /dev/null
+++ b/health/notifications/email/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	email/README.md \
+	email/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/email/README.md b/health/notifications/email/README.md
new file mode 100644
index 000000000..979790ad6
--- /dev/null
+++ b/health/notifications/email/README.md
@@ -0,0 +1,31 @@
+# email notifications
+
+You need a working `sendmail` command for email alerts to work. Almost all MTAs provide a `sendmail` interface.
+
+netdata sends all emails as user `netdata`, so make sure your `sendmail` works for local users.
+
+email notifications look like this:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/18407294/e9218c68-7714-11e6-8739-e4dd8a498252.png)
+
+## configuration
+
+To edit `health_alarm_notify.conf` on your system run `/etc/netdata/edit-config health_alarm_notify.conf`.
+
+You can configure recipients in [`/etc/netdata/health_alarm_notify.conf`](https://github.com/netdata/netdata/blob/99d44b7d0c4e006b11318a28ba4a7e7d3f9b3bae/conf.d/health_alarm_notify.conf#L101).
+
+You can also configure per role recipients [in the same file, a few lines below](https://github.com/netdata/netdata/blob/99d44b7d0c4e006b11318a28ba4a7e7d3f9b3bae/conf.d/health_alarm_notify.conf#L313).
+
+Changes to this file do not require netdata restart.
+
+You can test your configuration by issuing the commands:
+
+```sh
+# become user netdata
+sudo su -s /bin/bash netdata
+
+# send a test alarm
+/usr/libexec/netdata/plugins.d/alarm-notify.sh test [ROLE]
+```
+
+Where `[ROLE]` is the role you want to test. The default (if you don't give a `[ROLE]`) is `sysadmin`.
\ No newline at end of file
diff --git a/health/notifications/flock/Makefile.inc b/health/notifications/flock/Makefile.inc
new file mode 100644
index 000000000..fbff309a0
--- /dev/null
+++ b/health/notifications/flock/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	flock/README.md \
+	flock/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/flock/README.md b/health/notifications/flock/README.md
new file mode 100644
index 000000000..33a545eac
--- /dev/null
+++ b/health/notifications/flock/README.md
@@ -0,0 +1,31 @@
+# flock.com notifications
+
+This is what you will get:
+
+
+![Flock](https://i.imgur.com/ok9bRzw.png)
+
+You need:
+
+The **incoming webhook URL** as given by flock.com. You can use the same on all your netdata servers (or you can have multiple if you like - your decision).
+
+Get them here: https://admin.flock.com/webhooks
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# sending flock notifications
+
+# enable/disable sending pushover notifications
+SEND_FLOCK="YES"
+
+# Login to flock.com and create an incoming webhook.
+# You need only one for all your netdata servers.
+# Without it, netdata cannot send flock notifications.
+FLOCK_WEBHOOK_URL="https://api.flock.com/hooks/sendMessage/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+
+# if a role recipient is not configured, no notification will be sent
+DEFAULT_RECIPIENT_FLOCK="alarms"
+
+```
\ No newline at end of file
diff --git a/conf.d/health_alarm_notify.conf b/health/notifications/health_alarm_notify.conf
index 0a95931ec..9e72aac4d 100755
--- a/conf.d/health_alarm_notify.conf
+++ b/health/notifications/health_alarm_notify.conf
@@ -14,7 +14,10 @@
 # - sms messages to your cell phone or any sms enabled device (twilio.com)
 # - sms messages to your cell phone or any sms enabled device (messagebird.com)
 # - notifications to users on pagerduty.com
+# - notifications to Amazon SNS topics (aws.amazon.com)
 # - messages to your irc channel on your selected network
+# - messages to a local or remote syslog daemon
+# - message to Microsoft Team (thru webhook)
 #
 # The 'to' line given at netdata alarms defines a *role*, so that many
 # people can be notified for each role.
@@ -44,6 +47,23 @@
 
 
 #------------------------------------------------------------------------------
+# date handling
+#
+# You can configure netdata alerts to send dates in any format you want.
+# This uses standard `date` command format strings.  See `man date` for
+# more info on what you can put in here.  Note that this has to start with a '+', otherwise it won't work.
+#
+# For ISO 8601 dates, use '+%FT%T%z'
+# For RFC 5322 dates, use '+%a, %d %b %Y %H:%M:%S %z'
+# For RFC 3339 dates, use '+%F %T%:z'
+# For RFC 1123 dates, use '+%a, %d %b %Y %H:%M:%S %Z'
+# For RFC 1036 dates, use '+%A, %d-%b-%y %H:%M:%S %Z'
+# For a reasonably local date and time (in that order), use '+%x %X'
+# For the old default behavior (compatible with ANSI C's asctime() function), leave this empty.
+date_format=''
+
+
+#------------------------------------------------------------------------------
 # external commands
 
 # The full path to the sendmail command.
@@ -61,6 +81,16 @@ curl=""
 # If not found, irc notifications will be silently disabled.
 nc=""
 
+# The full path of the logger command.
+# If empty, the system $PATH will be searched for it.
+# If not found, syslog notifications will be silently disabled.
+logger=""
+
+# The full path of the aws command.
+# If empty, the system $PATH will be searched for it.
+# If not found, Amazon SNS notifications will be silently disabled.
+aws=""
+
 #------------------------------------------------------------------------------
 # extra options for external commands
 #
@@ -74,6 +104,10 @@ nc=""
 # of potentially sensitive information.
 #curl_options="--insecure"
 
+# Extra options to pass to logger.  You shouldn't have to specify anything
+# here in most cases.
+#logger_options=""
+
 #------------------------------------------------------------------------------
 # NOTE ABOUT RECIPIENTS
 #
@@ -144,6 +178,14 @@ DEFAULT_RECIPIENT_EMAIL="root"
 # autodetected from the environment.
 #EMAIL_CHARSET="UTF-8"
 
+# You can also have netdata add headers to the message that will
+# cause most e-mail clients to treat all notifications for a given
+# chart+alarm+host combination as a single thread.  This can help
+# simplify tracking of alarms, as it provides an easy wway for scripts
+# to corelate messages and also will cause most clients to group all the
+# messages together.  THis is off by default.
+#EMAIL_THREADING="YES"
+
 
 #------------------------------------------------------------------------------
 # pushover (pushover.net) global notification options
@@ -297,6 +339,60 @@ SLACK_WEBHOOK_URL=""
 # roles):
 DEFAULT_RECIPIENT_SLACK=""
 
+#------------------------------------------------------------------------------
+# Microsoft Team (office.com) global notification options
+# More details are available here regarding the payload syntax options : https://docs.microsoft.com/en-us/outlook/actionable-messages/message-card-reference
+# Online designer : https://acdesignerbeta.azurewebsites.net/
+# multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending team notifications
+SEND_MSTEAM="YES"
+
+# if a role's recipients are not configured, a notification will be send to
+# this slack channel (empty = do not send a notification for unconfigured
+# roles):
+# For team the channel name is encoded in the URI after ....IncomingWebhook/___/.....
+# This value will be replaced in the webhook value to publish to several channels in a same Team.
+# In order to get it working properly, you have to replace the value between [] ....IncomingWebhook/[___]/..... by "CHANNEL" string.
+DEFAULT_RECIPIENT_MSTEAM=""
+# Based on the way MS Teams is working, put the differents channels here like : "CHANNEL1 CHANNEL2 ..."
+# AT LEAST ONE CHANNEL IS MANDATORY
+MSTEAM_WEBHOOK_URL=""
+
+# Define the default color scheme for alert to MS Team - icon and color
+# Icons - go to https://emojipedia.org/bomb/
+MSTEAM_ICON_DEFAULT="♡"
+MSTEAM_ICON_CLEAR="💚"
+MSTEAM_ICON_WARNING="⚠️"
+MSTEAM_ICON_CRITICAL="🔥"
+
+# Colors
+MSTEAM_COLOR_DEFAULT="0076D7"
+MSTEAM_COLOR_CLEAR="65A677"
+MSTEAM_COLOR_WARNING="FFA500"
+MSTEAM_COLOR_CRITICAL="D93F3C"
+
+
+#------------------------------------------------------------------------------
+# rocketchat (rocket.chat) global notification options
+
+# multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending rocketchat notifications
+SEND_ROCKETCHAT="YES"
+
+# Login to rocket.chat and create an incoming webhook. You need only one for all
+# your netdata servers (or you can have one for each of your netdata).
+# Without it, netdata cannot send rocketchat notifications.
+ROCKETCHAT_WEBHOOK_URL=""
+
+# if a role's recipients are not configured, a notification will be send to
+# this rocketchat channel (empty = do not send a notification for unconfigured
+# roles):
+DEFAULT_RECIPIENT_ROCKETCHAT=""
+
 
 #------------------------------------------------------------------------------
 # alerta (alerta.io) global notification options
@@ -413,6 +509,28 @@ DEFAULT_RECIPIENT_PD=""
 
 
 #------------------------------------------------------------------------------
+# fleep notification options
+#
+# To send fleep.io notifications, you will need a webhook for the
+# conversation you want to send to.
+
+# Fleep recipients are specified as the last part of the webhook URL.
+# So, for a webhook URL of: https://fleep.io/hook/IJONmBuuSlWlkb_ttqyXJg, the
+# recipient name would be: 'IJONmBuuSlWlkb_ttqyXJg'.
+
+# enable/disable sending fleep notifications
+SEND_FLEEP="YES"
+
+# if a role's recipients are not configured, a notification will not be sent.
+# (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_FLEEP=""
+
+# The user name to label the messages with.  If this is unset,
+# the hostname of the system the notification is for will be used.
+FLEEP_SENDER=""
+
+
+#------------------------------------------------------------------------------
 # irc notification options
 #
 # irc notifications require only the nc utility to be installed. 
@@ -441,6 +559,94 @@ IRC_REALNAME=""
 
 
 #------------------------------------------------------------------------------
+# syslog notifications
+#
+# syslog notifications only need you to have a working logger command, which
+# should be the case on pretty much any Linux system.
+
+# enable/disable sending syslog notifications
+# NOTE: make sure you have everything else configured the way you want
+# it _before_ turning this on.
+SEND_SYSLOG="NO"
+
+# A note on log levels and facilities:
+#
+# The traditional UNIX syslog mechanism has the concept of both log
+# levels and facilities.  A log level indicates the relaitve severity of
+# the message, while a facility specifies a generic source for the message
+# (for example, the `mail` facility is where sendmail and postfix log
+# their messages).  All major syslog daemons have the ability to filter
+# messages based on both log level and facility, and can often also make
+# routing decisions for messages based on both factors.
+#
+# On Linux, the eight log levels in decreasing order of severity are:
+# emerg, alert, crit, err, warning, notice, info, debug
+#
+# By default, warnings will be logged at the warning level, critical
+# alerts at the crit level, and clear notifications at the invo level.
+#
+# And the 19 facilities you can log to are:
+# auth, authpriv, cron, daemon, ftp, lpr, mail, news, syslog, user,
+# uucp, local0, local1, local2, local3, local4, local5, local6, and local7
+#
+# By default, netdata alerts will be logged to the local6 facility.
+#
+# Depending on your distribution, this means that either all your
+# netdata alerts will by default end up in the main system log (usually
+# /var/log/messages), or they won't be logged to a file at all.
+# Neither of these are likely to be what you actually want, but any
+# configuration to change that needs to happen in the syslog daemon
+# configuration, not here.
+
+# This controls which facility is used by defalt for logging.  Defaults
+# to local6.
+SYSLOG_FACILITY=''
+
+# If a role's recipients are not configured, use the following.
+# (empty = do not send a notification for unconfigured roles)
+#
+# The recipient format for syslog uses the following format:
+# [[facility.level][@host[:port]]/]prefix
+#
+# `prefix` gets appended to the front of all log messages generated for
+# that recipient.  The prefix is mandatory.
+# 'host' and 'port' can be used to specify a remote syslog server to
+# send messages to.  Leave these out if you want messages to be delivered
+# locally.  'host' can be either a hostname or an IP address.
+# IPv6 addresses must have square around them.
+# 'facility' and 'level' are used to override the default logging facility
+# set above and the log level.  If one is specified, both must be present.
+#
+# For example, to send messages with a 'netdata' prefix to a syslog
+# daemon listening on port 514 on 'loghost' using the daemon facility and
+# notice log level:
+# DEFAULT_RECIPIENT_SYSLOG='daemon.notice@loghost:514/netdata'
+#
+DEFAULT_RECIPIENT_SYSLOG="netdata"
+
+#------------------------------------------------------------------------------
+# Amazon SNS notifications
+#
+# This method requires potentially complex manual configuration.  See the
+# netdata wiki for information on what is needed.
+
+# enable/disable sending Amazon SNS notifications
+SEND_AWSSNS="YES"
+
+# Specify a template for the Amazon SNS notifications.  This supports
+# the same set of variables that are usable in the `custom_sender()`
+# function in the custom notification configuration below.
+#
+AWSSNS_MESSAGE_FORMAT="${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+# If a role's recipients are not configured, use the following.
+# (empty = do not send a notification for unconfigured roles)
+#
+# Recipients for AWS SNS notifications are specified as topic ARN's.
+#
+DEFAULT_RECIPIENT_AWSSNS=""
+
+#------------------------------------------------------------------------------
 # custom notifications
 #
 
@@ -535,10 +741,18 @@ role_recipients_kavenegar[sysadmin]="${DEFAULT_RECIPIENT_KAVENEGAR}"
 
 role_recipients_pd[sysadmin]="${DEFAULT_RECIPIENT_PD}"
 
+role_recipients_fleep[sysadmin]="${DEFAULT_RECIPIENT_FLEEP}"
+
 role_recipients_irc[sysadmin]="${DEFAULT_RECIPIENT_IRC}"
 
+role_recipients_syslog[sysadmin]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[sysadmin]="${DEFAULT_RECIPIENT_AWSSNS}"
+
 role_recipients_custom[sysadmin]="${DEFAULT_RECIPIENT_CUSTOM}"
 
+role_recipients_msteam[sysadmin]="${DEFAULT_RECIPIENT_MSTEAM}"
+
 # -----------------------------------------------------------------------------
 # DNS related alarms
 
@@ -568,10 +782,18 @@ role_recipients_kavenegar[domainadmin]="${DEFAULT_RECIPIENT_KAVENEGAR}"
 
 role_recipients_pd[domainadmin]="${DEFAULT_RECIPIENT_PD}"
 
+role_recipients_fleep[domainadmin]="${DEFAULT_RECIPIENT_FLEEP}"
+
 role_recipients_irc[domainadmin]="${DEFAULT_RECIPIENT_IRC}"
 
+role_recipients_syslog[domainadmin]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[domainadmin]="${DEFAULT_RECIPIENT_AWSSNS}"
+
 role_recipients_custom[domainadmin]="${DEFAULT_RECIPIENT_CUSTOM}"
 
+role_recipients_msteam[domainadmin]="${DEFAULT_RECIPIENT_MSTEAM}"
+
 # -----------------------------------------------------------------------------
 # database servers alarms
 # mysql, redis, memcached, postgres, etc
@@ -602,10 +824,18 @@ role_recipients_kavenegar[dba]="${DEFAULT_RECIPIENT_KAVENEGAR}"
 
 role_recipients_pd[dba]="${DEFAULT_RECIPIENT_PD}"
 
+role_recipients_fleep[dba]="${DEFAULT_RECIPIENT_FLEEP}"
+
 role_recipients_irc[dba]="${DEFAULT_RECIPIENT_IRC}"
 
+role_recipients_syslog[dba]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[dba]="${DEFAULT_RECIPIENT_AWSSNS}"
+
 role_recipients_custom[dba]="${DEFAULT_RECIPIENT_CUSTOM}"
 
+role_recipients_msteam[dba]="${DEFAULT_RECIPIENT_MSTEAM}"
+
 # -----------------------------------------------------------------------------
 # web servers alarms
 # apache, nginx, lighttpd, etc
@@ -636,10 +866,18 @@ role_recipients_kavenegar[webmaster]="${DEFAULT_RECIPIENT_KAVENEGAR}"
 
 role_recipients_pd[webmaster]="${DEFAULT_RECIPIENT_PD}"
 
+role_recipients_fleep[webmaster]="${DEFAULT_RECIPIENT_FLEEP}"
+
 role_recipients_irc[webmaster]="${DEFAULT_RECIPIENT_IRC}"
 
+role_recipients_syslog[webmaster]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[webmaster]="${DEFAULT_RECIPIENT_AWSSNS}"
+
 role_recipients_custom[webmaster]="${DEFAULT_RECIPIENT_CUSTOM}"
 
+role_recipients_msteam[webmaster]="${DEFAULT_RECIPIENT_MSTEAM}"
+
 # -----------------------------------------------------------------------------
 # proxy servers alarms
 # squid, etc
@@ -670,10 +908,18 @@ role_recipients_kavenegar[proxyadmin]="${DEFAULT_RECIPIENT_KAVENEGAR}"
 
 role_recipients_pd[proxyadmin]="${DEFAULT_RECIPIENT_PD}"
 
+role_recipients_fleep[proxyadmin]="${DEFAULT_RECIPIENT_FLEEP}"
+
 role_recipients_irc[proxyadmin]="${DEFAULT_RECIPIENT_IRC}"
 
+role_recipients_syslog[proxyadmin]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[porxyadmin]="${DEFAULT_RECIPIENT_AWSSNS}"
+
 role_recipients_custom[proxyadmin]="${DEFAULT_RECIPIENT_CUSTOM}"
 
+role_recipients_msteam[proxyadmin]="${DEFAULT_RECIPIENT_MSTEAM}"
+
 # -----------------------------------------------------------------------------
 # peripheral devices
 # UPS, photovoltaics, etc
@@ -704,5 +950,12 @@ role_recipients_kavenegar[sitemgr]="${DEFAULT_RECIPIENT_KAVENEGAR}"
 
 role_recipients_pd[sitemgr]="${DEFAULT_RECIPIENT_PD}"
 
+role_recipients_fleep[sitemgr]="${DEFAULT_RECIPIENT_FLEEP}"
+
+role_recipients_syslog[sitemgr]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[sitemgr]="${DEFAULT_RECIPIENT_AWSSNS}"
+
 role_recipients_custom[sitemgr]="${DEFAULT_RECIPIENT_CUSTOM}"
 
+role_recipients_msteam[sitemgr]="${DEFAULT_RECIPIENT_MSTEAM}"
diff --git a/conf.d/health_email_recipients.conf b/health/notifications/health_email_recipients.conf
index f56c6c64a..f56c6c64a 100644
--- a/conf.d/health_email_recipients.conf
+++ b/health/notifications/health_email_recipients.conf
diff --git a/health/notifications/irc/Makefile.inc b/health/notifications/irc/Makefile.inc
new file mode 100644
index 000000000..23be7210a
--- /dev/null
+++ b/health/notifications/irc/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	irc/README.md \
+	irc/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/irc/README.md b/health/notifications/irc/README.md
new file mode 100644
index 000000000..ece879fe6
--- /dev/null
+++ b/health/notifications/irc/README.md
@@ -0,0 +1,73 @@
+# IRC notifications
+
+This is what you will get:
+
+IRCCloud web client:  
+![image](https://user-images.githubusercontent.com/31221999/36793487-3735673e-1ca6-11e8-8880-d1d8b6cd3bc0.png)
+
+Irssi terminal client:
+![image](https://user-images.githubusercontent.com/31221999/36793486-3713ada6-1ca6-11e8-8c12-70d956ad801e.png)
+
+
+You need:
+1. The `nc` utility. If you do not set the path, netdata will search for it in your system `$PATH`.
+
+Set the path for `nc` in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+#------------------------------------------------------------------------------
+# external commands
+#
+# The full path of the nc command.
+# If empty, the system $PATH will be searched for it.
+# If not found, irc notifications will be silently disabled.
+nc="/usr/bin/nc"
+
+```
+
+2. Αn `IRC_NETWORK` to which your preffered channels belong to.   
+3. One or more channels ( `DEFAULT_RECIPIENT_IRC` ) to post the messages to.   
+4. An `IRC_NICKNAME` and an `IRC_REALNAME` to identify in IRC.   
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+#------------------------------------------------------------------------------
+# irc notification options
+#
+# irc notifications require only the nc utility to be installed. 
+
+# multiple recipients can be given like this:
+#              "<irc_channel_1> <irc_channel_2> ..."
+
+# enable/disable sending irc notifications
+SEND_IRC="YES"
+
+# if a role's recipients are not configured, a notification will not be sent.
+# (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_IRC="#system-alarms"
+
+# The irc network to which the recipients belong. It must be the full network.
+IRC_NETWORK="irc.freenode.net"
+
+# The irc nickname which is required to send the notification. It must not be 
+# an already registered name as the connection's MODE is defined as a 'guest'.
+IRC_NICKNAME="netdata-alarm-user"
+
+# The irc realname which is required in order to make the connection and is an
+# extra identifier.
+IRC_REALNAME="netdata-user"
+
+```
+
+You can define multiple channels like this: `#system-alarms #networking-alarms`.  
+You can also filter the notifications like this: `#system-alarms|critical`.  
+You can give different channels per **role** using these (at the same file):  
+
+```
+role_recipients_irc[sysadmin]="#user-alarms #networking-alarms #system-alarms"
+role_recipients_irc[dba]="#databases-alarms"
+role_recipients_irc[webmaster]="#networking-alarms"
+```
+
+The keywords `#user-alarms`, `#networking-alarms`, `#system-alarms`, `#databases-alarms` are irc channels which belong to the specified IRC network.
\ No newline at end of file
diff --git a/health/notifications/kavenegar/Makefile.inc b/health/notifications/kavenegar/Makefile.inc
new file mode 100644
index 000000000..6a17c3482
--- /dev/null
+++ b/health/notifications/kavenegar/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	kavenegar/README.md \
+	kavenegar/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/kavenegar/README.md b/health/notifications/kavenegar/README.md
new file mode 100644
index 000000000..e59ad4d4f
--- /dev/null
+++ b/health/notifications/kavenegar/README.md
@@ -0,0 +1,39 @@
+# Kavenegar notifications
+
+[Kavenegar](https://www.kavenegar.com/) as service for software developers, based in Iran, provides send and receive SMS, calling voice by using its APIs.
+
+Will look like this on your Android device:
+
+![image](https://cloud.githubusercontent.com/assets/17090999/20034652/620b6100-a39b-11e6-96af-4f83b8e830e2.png)
+
+You will need:
+
+1. Signup and Login to kavenegar.com
+2. Get your APIKEY and Sender from http://panel.kavenegar.com/client/setting/account
+3. Fill in KAVENEGAR_API_KEY="" KAVENEGAR_SENDER=""
+4. Add the recipient phone numbers to DEFAULT_RECIPIENT_KAVENEGAR=""
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# Kavenegar (kavenegar.com) SMS options
+
+# multiple recipients can be given like this:
+#                 "09155555555 09177777777"
+
+# enable/disable sending kavenegar SMS
+SEND_KAVENEGAR="YES"
+
+# to get an access key, after selecting and purchasing your desired service
+# at http://kavenegar.com/pricing.html
+# login to your account, go to your dashboard and my account are
+# https://panel.kavenegar.com/Client/setting/account from API Key
+# copy your api key. You can generate new API Key too.
+# You can find and select kevenegar sender number from this place.
+
+# Without an API key, netdata cannot send KAVENEGAR text messages.
+KAVENEGAR_API_KEY=""
+KAVENEGAR_SENDER=""
+DEFAULT_RECIPIENT_KAVENEGAR=""
+```
\ No newline at end of file
diff --git a/health/notifications/messagebird/Makefile.inc b/health/notifications/messagebird/Makefile.inc
new file mode 100644
index 000000000..8132fecce
--- /dev/null
+++ b/health/notifications/messagebird/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	messagebird/README.md \
+	messagebird/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/messagebird/README.md b/health/notifications/messagebird/README.md
new file mode 100644
index 000000000..e09ba5d38
--- /dev/null
+++ b/health/notifications/messagebird/README.md
@@ -0,0 +1,38 @@
+
+Will look like this on your Android device:
+
+![image](https://cloud.githubusercontent.com/assets/17090999/20034652/620b6100-a39b-11e6-96af-4f83b8e830e2.png)
+
+You will need:
+
+1. Signup and Login to messagebird.com
+2. Pick an SMS capable number after sign up to get some free credits
+3. Go to <https://www.messagebird.com/app/settings/developers/access>
+4. Create a new access key under 'API ACCESS (REST)' (you will want a live key)
+3. Fill in MESSAGEBIRD_ACCESS_KEY="XXXXXXXX" MESSAGEBIRD_NUMBER="+XXXXXXXXXXX"
+4. Add the recipient phone numbers to DEFAULT_RECIPIENT_MESSAGEBIRD="+XXXXXXXXXXX"
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+#------------------------------------------------------------------------------
+# Messagebird (messagebird.com) SMS options
+
+# multiple recipients can be given like this:
+#                  "+15555555555 +17777777777"
+
+# enable/disable sending messagebird SMS
+SEND_MESSAGEBIRD="YES"
+
+# to get an access key, create a free account at https://www.messagebird.com
+# verify and activate the account (no CC info needed)
+# login to your account and enter your phonenumber to get some free credits
+# to get the API key, click on 'API' in the sidebar, then 'API Access (REST)' 
+# click 'Add access key' and fill in data (you want a live key to send SMS)
+
+# Without an access key, netdata cannot send Messagebird text messages.
+MESSAGEBIRD_ACCESS_KEY="XXXXXXXX"
+MESSAGEBIRD_NUMBER="XXXXXXX"
+DEFAULT_RECIPIENT_MESSAGEBIRD="XXXXXXX"
+
+```
diff --git a/health/notifications/pagerduty/Makefile.inc b/health/notifications/pagerduty/Makefile.inc
new file mode 100644
index 000000000..6012d20e9
--- /dev/null
+++ b/health/notifications/pagerduty/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	pagerduty/README.md \
+	pagerduty/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/pagerduty/README.md b/health/notifications/pagerduty/README.md
new file mode 100644
index 000000000..e35051fd4
--- /dev/null
+++ b/health/notifications/pagerduty/README.md
@@ -0,0 +1,34 @@
+
+[PagerDuty](https://www.pagerduty.com/company/) is the enterprise incident resolution service that integrates with ITOps and DevOps monitoring stacks to improve operational reliability and agility. From enriching and aggregating events to correlating them into incidents, PagerDuty streamlines the incident management process by reducing alert noise and resolution times.
+
+Here is an example of a PagerDuty dashboard with netdata notifications:
+
+![PagerDuty dashboard with netdata notifications](https://cloud.githubusercontent.com/assets/19278582/21233877/b466a08a-c2a5-11e6-8d66-ee6eed43818f.png)
+
+To have netdata send notifications to PagerDuty, you'll first need to set up a PagerDuty `Generic API` service and install the PagerDuty agent on the host running netdata.  See the following guide for details:
+
+https://www.pagerduty.com/docs/guides/agent-install-guide/
+
+During the setup of the `Generic API` PagerDuty service, you'll obtain a `pagerduty service key`.  Keep this **service key** handy.
+
+Once the PagerDuty agent is installed on your host and can send notifications from your host to your `Generic API` service on PagerDuty, add the **service key** to `DEFAULT_RECIPIENT_PD` in `health_alarm_notify.conf`:
+
+```
+#------------------------------------------------------------------------------
+# pagerduty.com notification options
+#
+# pagerduty.com notifications require the pagerduty agent to be installed and 
+# a "Generic API" pagerduty service.
+# https://www.pagerduty.com/docs/guides/agent-install-guide/
+
+# multiple recipients can be given like this:
+#              "<pd_service_key_1> <pd_service_key_2> ..."
+
+# enable/disable sending pagerduty notifications
+SEND_PD="YES"
+
+# if a role's recipients are not configured, a notification will be sent to
+# the "General API" pagerduty.com service that uses this service key.
+# (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_PD="<service key>"
+```
diff --git a/health/notifications/pushbullet/Makefile.inc b/health/notifications/pushbullet/Makefile.inc
new file mode 100644
index 000000000..693a0ffba
--- /dev/null
+++ b/health/notifications/pushbullet/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	pushbullet/README.md \
+	pushbullet/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/pushbullet/README.md b/health/notifications/pushbullet/README.md
new file mode 100644
index 000000000..827d9301d
--- /dev/null
+++ b/health/notifications/pushbullet/README.md
@@ -0,0 +1,42 @@
+$ PushBullet notifications
+
+Will look like this on your browser:
+![image](https://cloud.githubusercontent.com/assets/4300670/19109636/278b1c0c-8aee-11e6-8a09-7fc94fdbfec8.png)
+
+And like this on your Android device:
+
+
+![image](https://cloud.githubusercontent.com/assets/4300670/19109635/278a1dde-8aee-11e6-9984-0bc87a13312d.png)
+
+You will need:
+
+1. Signup and Login to pushbullet.com
+2. Get your Access Token, go to https://www.pushbullet.com/#settings/account and create a new one
+3. Fill in the PUSHBULLET_ACCESS_TOKEN with that value
+4. Add the recipient emails to DEFAULT_RECIPIENT_PUSHBULLET
+!!PLEASE NOTE THAT IF THE RECIPIENT DOES NOT HAVE A PUSHBULLET ACCOUNT, PUSHBULLET SERVICE WILL SEND AN EMAIL!!
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# pushbullet (pushbullet.com) push notification options
+
+# multiple recipients can be given like this:
+#                  "user1@email.com user2@mail.com"
+
+# enable/disable sending pushbullet notifications
+SEND_PUSHBULLET="YES"
+
+# Signup and Login to pushbullet.com
+# To get your Access Token, go to https://www.pushbullet.com/#settings/account
+# And create a new access token
+# Then just set the recipients emails
+# Please note that the if the email in the DEFAULT_RECIPIENT_PUSHBULLET does
+# not have a pushbullet account, the pushbullet service will send an email
+# to that address instead
+
+# Without an access token, netdata cannot send pushbullet notifications.
+PUSHBULLET_ACCESS_TOKEN="o.Sometokenhere"
+DEFAULT_RECIPIENT_PUSHBULLET="admin1@example.com admin3@somemail.com"
+```
\ No newline at end of file
diff --git a/health/notifications/pushover/Makefile.inc b/health/notifications/pushover/Makefile.inc
new file mode 100644
index 000000000..926ac7c35
--- /dev/null
+++ b/health/notifications/pushover/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	pushover/README.md \
+	pushover/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/pushover/README.md b/health/notifications/pushover/README.md
new file mode 100644
index 000000000..284981695
--- /dev/null
+++ b/health/notifications/pushover/README.md
@@ -0,0 +1,17 @@
+
+# PushOver notifications
+
+pushover.net allows you to receive push notifications on your mobile phone. The service seems free for up to 7.500 messages per month.
+
+netdata will send warning messages with priority `0` and critical messages with priority `1`. pushover.net allows you to select do-not-disturb hours. The way this is configured, critical notifications will ring and vibrate your phone, even during the do-not-disturb-hours. All other notifications will be delivered silently.
+
+You need:
+
+1. APP TOKEN. You can use the same on all your netdata servers.
+2. USER TOKEN for each user you are going to send notifications to. This is the actual recipient of the notification.
+
+The configuration is like above (slack messages).
+
+pushover.net notifications look like this:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/18407319/839c10c4-7715-11e6-92c0-12f8215128d3.png)
\ No newline at end of file
diff --git a/health/notifications/rocketchat/Makefile.inc b/health/notifications/rocketchat/Makefile.inc
new file mode 100644
index 000000000..a6fc5d577
--- /dev/null
+++ b/health/notifications/rocketchat/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	rocketchat/README.md \
+	rocketchat/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/rocketchat/README.md b/health/notifications/rocketchat/README.md
new file mode 100644
index 000000000..70c698672
--- /dev/null
+++ b/health/notifications/rocketchat/README.md
@@ -0,0 +1,46 @@
+# Rocket.Chat notifications
+
+This is what you will get:
+![Netdata on RocketChat](https://i.imgur.com/Zu4t3j3.png)
+You need:
+
+1. The **incoming webhook URL** as given by RocketChat. You can use the same on all your netdata servers (or you can have multiple if you like - your decision).
+2. One or more channels to post the messages to.
+
+Get them here: https://rocket.chat/docs/administrator-guides/integrations/index.html#how-to-create-a-new-incoming-webhook
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+#------------------------------------------------------------------------------
+# rocketchat (rocket.chat) global notification options
+
+# multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending rocketchat notifications
+SEND_ROCKETCHAT="YES"
+
+# Login to rocket.chat and create an incoming webhook. You need only one for all
+# your netdata servers (or you can have one for each of your netdata).
+# Without it, netdata cannot send rocketchat notifications.
+ROCKETCHAT_WEBHOOK_URL="<your_incoming_webhook_url>"
+
+# if a role's recipients are not configured, a notification will be send to
+# this rocketchat channel (empty = do not send a notification for unconfigured
+# roles).
+DEFAULT_RECIPIENT_ROCKETCHAT="monitoring_alarms"
+
+```
+
+You can define multiple channels like this: `alarms systems`.
+You can give different channels per **role** using these (at the same file):
+
+```
+role_recipients_rocketchat[sysadmin]="systems"
+role_recipients_rocketchat[dba]="databases systems"
+role_recipients_rocketchat[webmaster]="marketing development"
+```
+
+The keywords `systems`, `databases`, `marketing`, `development` are RocketChat channels (they should already exist).
+Both public and private channels can be used, even if they differ from the channel configured in yout RocketChat incomming webhook.
diff --git a/health/notifications/slack/Makefile.inc b/health/notifications/slack/Makefile.inc
new file mode 100644
index 000000000..955a8c7ad
--- /dev/null
+++ b/health/notifications/slack/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	slack/README.md \
+	slack/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/slack/README.md b/health/notifications/slack/README.md
new file mode 100644
index 000000000..45be45197
--- /dev/null
+++ b/health/notifications/slack/README.md
@@ -0,0 +1,45 @@
+# Slack.com notifications
+
+This is what you will get:
+![image](https://cloud.githubusercontent.com/assets/2662304/18407116/bbd0fee6-7710-11e6-81cf-58c0defaee2b.png)
+
+You need:
+
+1. The **incoming webhook URL** as given by slack.com. You can use the same on all your netdata servers (or you can have multiple if you like - your decision).
+2. One or more channels to post the messages to.
+
+Get them here: https://api.slack.com/incoming-webhooks
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# sending slack notifications
+
+# note: multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending pushover notifications
+SEND_SLACK="YES"
+
+# Login to slack.com and create an incoming webhook.
+# You need only one for all your netdata servers.
+# Without it, netdata cannot send slack notifications.
+SLACK_WEBHOOK_URL="https://hooks.slack.com/services/XXXXXXXX/XXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+
+# if a role recipient is not configured, a notification will be send to
+# this slack channel:
+DEFAULT_RECIPIENT_SLACK="alarms"
+
+```
+
+You can define multiple channels like this: `alarms systems`.
+You can give different channels per **role** using these (at the same file):
+
+```
+role_recipients_slack[sysadmin]="systems"
+role_recipients_slack[dba]="databases systems"
+role_recipients_slack[webmaster]="marketing development"
+```
+
+The keywords `systems`, `databases`, `marketing`, `development` are slack.com channels (they should already exist in slack).
diff --git a/health/notifications/syslog/Makefile.inc b/health/notifications/syslog/Makefile.inc
new file mode 100644
index 000000000..1792b9d9c
--- /dev/null
+++ b/health/notifications/syslog/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	syslog/README.md \
+	syslog/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/syslog/README.md b/health/notifications/syslog/README.md
new file mode 100644
index 000000000..fcc2466a6
--- /dev/null
+++ b/health/notifications/syslog/README.md
@@ -0,0 +1,23 @@
+# syslog notifications
+
+You need a working `logger` command for this to work.  This is the case on pretty much every Linux system in existence, and most BSD systems.
+
+Logged messages will look like this:
+
+    netdata WARNING on hostname at Tue Apr 3 09:00:00 EDT 2018: disk_space._ out of disk space time = 5h
+
+## configuration
+
+System log targets are configured as recipients in [`/etc/netdata/health_alarm_notify.conf`](https://github.com/netdata/netdata/blob/36bedc044584dea791fd29455bdcd287c3306cb2/conf.d/health_alarm_notify.conf#L534) (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`).
+
+You can als configure per-role targets in the same file a bit further down.
+
+Targets are defined as follows:
+
+    [[facility.level][@host[:port]]/]prefix
+
+`prefix` defines what the log messages are prefixed with.  By default, all lines are prefixed with 'netdata'.
+
+The `facility` and `level` are the standard syslog facility and level options, for more info on them see your local `logger` and `syslog` documentation.  By default, netdata will log to the `local6` facility, with a log level dependent on the type of message (`crit` for CRITICAL, `warning` for WARNING, and `info` for everything else).
+
+You can configure sending directly to remote log servers by specifying a host (and optionally a port).  However, this has a somewhat high overhead, so it is much preferred to use your local syslog daemon to handle the forwarding of messages to remote systems (pretty much all of them allow at least simple forwarding, and most of the really popular ones support complex queueing and routing of messages to remote log servers).
diff --git a/health/notifications/telegram/Makefile.inc b/health/notifications/telegram/Makefile.inc
new file mode 100644
index 000000000..003996ba1
--- /dev/null
+++ b/health/notifications/telegram/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	telegram/README.md \
+	telegram/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/telegram/README.md b/health/notifications/telegram/README.md
new file mode 100644
index 000000000..cd52fe194
--- /dev/null
+++ b/health/notifications/telegram/README.md
@@ -0,0 +1,19 @@
+# Telegram.org notifications
+
+[Telegram](https://telegram.org/) is a messaging app with a focus on speed and security, it’s super-fast, simple and free. You can use Telegram on all your devices at the same time — your messages sync seamlessly across any number of your phones, tablets or computers.
+
+With Telegram, you can send messages, photos, videos and files of any type (doc, zip, mp3, etc), as well as create groups for up to 30,000 people or channels for broadcasting to unlimited audiences. You can write to your phone contacts and find people by their usernames. As a result, Telegram is like SMS and email combined — and can take care of all your personal or business messaging needs.
+
+netdata will send warning messages without vibration.
+
+You need:
+
+1. A bot token. To get one, contact the [@BotFather](https://t.me/BotFather) bot and send the command `/newbot`. Follow the instructions.
+2. A chat id for every chat you want to send messages to. Contact the [@myidbot](https://t.me/myidbot) bot and send the command `/getid` to get your personal chat id or invite him into a group and issue the same command to get the group chat id.
+3. Start a conversation with your bot or invite him into a group you want to sent messages to.
+
+See slack for configuration.
+
+Telegram messages look like this:
+
+![image](https://fb.hash.works/ytl/preview.jpg)
diff --git a/health/notifications/twilio/Makefile.inc b/health/notifications/twilio/Makefile.inc
new file mode 100644
index 000000000..5bd00a21b
--- /dev/null
+++ b/health/notifications/twilio/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	twilio/README.md \
+	twilio/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/twilio/README.md b/health/notifications/twilio/README.md
new file mode 100644
index 000000000..ab3dd3c04
--- /dev/null
+++ b/health/notifications/twilio/README.md
@@ -0,0 +1,40 @@
+# Twilio.com notifications
+
+Will look like this on your Android device:
+
+![image](https://cloud.githubusercontent.com/assets/17090999/20034652/620b6100-a39b-11e6-96af-4f83b8e830e2.png)
+
+You will need:
+
+1. Signup and Login to twilio.com
+2. Pick an SMS capable number during sign up.
+3. Get your SID, and Token from <https://www.twilio.com/console>
+3. Fill in TWILIO_ACCOUNT_SID="XXXXXXXX" TWILIO_ACCOUNT_TOKEN="XXXXXXXXX" TWILIO_NUMBER="+XXXXXXXXXXX"
+4. Add the recipient phone numbers to DEFAULT_RECIPIENT_TWILIO="+XXXXXXXXXXX"
+
+!!PLEASE NOTE THAT IF YOUR ACCOUNT IS A TRIAL ACCOUNT YOU WILL ONLY BE ABLE TO SEND NOTIFICATIONS TO THE NUMBER YOU SIGNED UP WITH
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# Twilio (twilio.com) SMS options
+
+# multiple recipients can be given like this:
+#                  "+15555555555 +17777777777"
+
+# enable/disable sending twilio SMS
+SEND_TWILIO="YES"
+
+# Signup for free trial and select a SMS capable Twilio Number
+# To get your Account SID and Token, go to https://www.twilio.com/console
+# Place your sid, token and number below.
+# Then just set the recipients' phone numbers.
+# The trial account is only allowed to use the number specified when set up.
+
+# Without an account sid and token, netdata cannot send Twilio text messages.
+TWILIO_ACCOUNT_SID="xxxxxxxxx"
+TWILIO_ACCOUNT_TOKEN="xxxxxxxxxx"
+TWILIO_NUMBER="xxxxxxxxxxx"
+DEFAULT_RECIPIENT_TWILIO="+15555555555"
+```
diff --git a/health/notifications/web/Makefile.inc b/health/notifications/web/Makefile.inc
new file mode 100644
index 000000000..890824313
--- /dev/null
+++ b/health/notifications/web/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	web/README.md \
+	web/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/web/README.md b/health/notifications/web/README.md
new file mode 100644
index 000000000..ba7dac1fe
--- /dev/null
+++ b/health/notifications/web/README.md
@@ -0,0 +1,6 @@
+# Dashboard notifications
+
+The netdata dashboard shows HTML notifications, when it is open.
+
+Such web notifications look like this:
+![image](https://cloud.githubusercontent.com/assets/2662304/18407279/82bac6a6-7714-11e6-847e-c2e84eeacbfb.png)
diff --git a/installer/.keep b/installer/.keep
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/installer/.keep
diff --git a/installer/functions.sh b/installer/functions.sh
index 7e522f0aa..dc2833318 100644
--- a/installer/functions.sh
+++ b/installer/functions.sh
@@ -1,4 +1,6 @@
 # no shebang necessary - this is a library to be sourced
+# SPDX-License-Identifier: GPL-3.0-or-later
+# shellcheck disable=SC1091,SC1117,SC2002,SC2004,SC2034,SC2046,SC2059,SC2086,SC2129,SC2148,SC2154,SC2155,SC2162,SC2166,SC2181,SC2193
 
 # make sure we have a UID
 [ -z "${UID}" ] && UID="$(id -u)"
@@ -8,8 +10,8 @@
 # checking the availability of commands
 
 which_cmd() {
-    which "${1}" 2>/dev/null || \
-        command -v "${1}" 2>/dev/null
+    # shellcheck disable=SC2230
+    which "${1}" 2>/dev/null || command -v "${1}" 2>/dev/null
 }
 
 check_cmd() {
@@ -160,6 +162,29 @@ pidof() {
 }
 
 # -----------------------------------------------------------------------------
+# portable delete recursively interactively
+
+portable_deletedir_recursively_interactively() {
+    if [ ! -z "$1" -a -d "$1" ]
+        then
+        if [ "$(uname -s)" = "Darwin" ]
+        then
+            echo >&2
+            read >&2 -p "Press ENTER to recursively delete directory '$1' > "
+            echo >&2 "Deleting directory '$1' ..."
+            run rm -R "$1"
+        else
+            echo >&2
+            echo >&2 "Deleting directory '$1' ..."
+            run rm -I -R "$1"
+        fi
+    else
+        echo "Directory '$1' does not exist."
+    fi
+}
+
+
+# -----------------------------------------------------------------------------
 
 export SYSTEM_CPUS=1
 portable_find_processors() {
@@ -287,6 +312,7 @@ portable_add_user() {
 
     echo >&2 "Adding ${username} user account with home ${homedir} ..."
 
+    # shellcheck disable=SC2230
     local nologin="$(which nologin 2>/dev/null || command -v nologin 2>/dev/null || echo '/bin/false')"
 
     # Linux
@@ -415,10 +441,11 @@ iscontainer() {
 issystemd() {
     local pids p myns ns systemctl
 
-    # if the directory /etc/systemd/system does not exit, it is not systemd
-    [ ! -d /etc/systemd/system ] && return 1
+    # if the directory /lib/systemd/system does not exit, it is not systemd
+    [ ! -d /lib/systemd/system ] && return 1
 
     # if there is no systemctl command, it is not systemd
+    # shellcheck disable=SC2230
     systemctl=$(which systemctl 2>/dev/null || command -v systemctl 2>/dev/null)
     [ -z "${systemctl}" -o ! -x "${systemctl}" ] && return 1
 
@@ -436,7 +463,7 @@ issystemd() {
         ns="$(readlink /proc/${p}/ns/pid 2>/dev/null)"
 
         # if pid of systemd is in our namespace, it is systemd
-        [ ! -z "${myns}" && "${myns}" = "${ns}" ] && return 0
+        [ ! -z "${myns}" ] && [ "${myns}" = "${ns}" ] && return 0
     done
 
     # else, it is not systemd
@@ -478,7 +505,7 @@ install_non_systemd_init() {
             run update-rc.d netdata defaults && \
             run update-rc.d netdata enable && \
             return 0
-        elif [[ "${key}" =~ ^(amzn-201[567]|ol|CentOS release 6|Red Hat Enterprise Linux Server release 6|Scientific Linux CERN SLC release 6|CloudLinux Server release 6).* ]]
+        elif [[ "${key}" =~ ^(amzn-201[5678]|ol|CentOS release 6|Red Hat Enterprise Linux Server release 6|Scientific Linux CERN SLC release 6|CloudLinux Server release 6).* ]]
             then
             echo >&2 "Installing init.d file..."
             run cp system/netdata-init-d /etc/init.d/netdata && \
@@ -511,8 +538,16 @@ install_netdata_service() {
         if [ "${uname}" = "Darwin" ]
         then
 
-            echo >&2 "hm... I don't know how to install a startup script for MacOS X"
-            return 1
+            if [ -f "/Library/LaunchDaemons/com.github.netdata.plist" ]
+                then
+                echo >&2 "file '/Library/LaunchDaemons/com.github.netdata.plist' already exists."
+                return 0
+            else
+                echo >&2 "Installing MacOS X plist file..."
+                run cp system/netdata.plist /Library/LaunchDaemons/com.github.netdata.plist && \
+                run launchctl load /Library/LaunchDaemons/com.github.netdata.plist && \
+                return 0
+            fi
 
         elif [ "${uname}" = "FreeBSD" ]
         then
@@ -528,16 +563,15 @@ install_netdata_service() {
             NETDATA_START_CMD="systemctl start netdata"
             NETDATA_STOP_CMD="systemctl stop netdata"
 
-            if [ ! -f /etc/systemd/system/netdata.service ]
+            if [ -d "/lib/systemd/system" ]
             then
                 echo >&2 "Installing systemd service..."
-                run cp system/netdata.service /etc/systemd/system/netdata.service && \
+                run cp system/netdata.service /lib/systemd/system/netdata.service && \
                     run systemctl daemon-reload && \
                     run systemctl enable netdata && \
                     return 0
             else
-                echo >&2 "file '/etc/systemd/system/netdata.service' already exists."
-                return 0
+                echo >&2 "no '/lib/systemd/system' directory; cannot install netdata.service"
             fi
         else
             install_non_systemd_init
@@ -792,31 +826,20 @@ download_netdata_conf() {
 # -----------------------------------------------------------------------------
 # add netdata user and group
 
-NETDATA_ADDED_TO_DOCKER=0
-NETDATA_ADDED_TO_NGINX=0
-NETDATA_ADDED_TO_VARNISH=0
-NETDATA_ADDED_TO_HAPROXY=0
-NETDATA_ADDED_TO_ADM=0
-NETDATA_ADDED_TO_NSD=0
-NETDATA_ADDED_TO_PROXY=0
-NETDATA_ADDED_TO_SQUID=0
-NETDATA_ADDED_TO_CEPH=0
+NETDATA_WANTED_GROUPS="docker nginx varnish haproxy adm nsd proxy squid ceph nobody"
+NETDATA_ADDED_TO_GROUPS=""
 add_netdata_user_and_group() {
-    local homedir="${1}"
+    local homedir="${1}" g
 
     if [ ${UID} -eq 0 ]
         then
         portable_add_group netdata || return 1
         portable_add_user netdata "${homedir}"  || return 1
-        portable_add_user_to_group docker   netdata && NETDATA_ADDED_TO_DOCKER=1
-        portable_add_user_to_group nginx    netdata && NETDATA_ADDED_TO_NGINX=1
-        portable_add_user_to_group varnish  netdata && NETDATA_ADDED_TO_VARNISH=1
-        portable_add_user_to_group haproxy  netdata && NETDATA_ADDED_TO_HAPROXY=1
-        portable_add_user_to_group adm      netdata && NETDATA_ADDED_TO_ADM=1
-        portable_add_user_to_group nsd      netdata && NETDATA_ADDED_TO_NSD=1
-        portable_add_user_to_group proxy    netdata && NETDATA_ADDED_TO_PROXY=1
-        portable_add_user_to_group squid    netdata && NETDATA_ADDED_TO_SQUID=1
-        portable_add_user_to_group ceph     netdata && NETDATA_ADDED_TO_CEPH=1
+
+        for g in ${NETDATA_WANTED_GROUPS}
+        do
+            portable_add_user_to_group ${g} netdata && NETDATA_ADDED_TO_GROUPS="${NETDATA_ADDED_TO_GROUPS} ${g}"
+        done
 
         [ ~netdata = / ] && cat <<USERMOD
 
diff --git a/kickstart-static64.sh b/kickstart-static64.sh
index 1e1b089b8..1fe360345 100755
--- a/kickstart-static64.sh
+++ b/kickstart-static64.sh
@@ -1,13 +1,19 @@
 #!/usr/bin/env sh
+# SPDX-License-Identifier: GPL-3.0-or-later
+# shellcheck disable=SC1117,SC2016,SC2034,SC2039,SC2059,SC2086,SC2119,SC2120,SC2129,SC2162,SC2166,SC2181
 
 umask 022
 
+# make sure UID is set
+# shellcheck disable=SC2155
+[ -z "${UID}" ] && export UID="$(id -u)"
+
 # ---------------------------------------------------------------------------------------------------------------------
 # library functions copied from installer/functions.sh
 
 which_cmd() {
-    which "${1}" 2>/dev/null || \
-        command -v "${1}" 2>/dev/null
+    # shellcheck disable=SC2230
+    which "${1}" 2>/dev/null || command -v "${1}" 2>/dev/null
 }
 
 check_cmd() {
@@ -170,7 +176,7 @@ wget="$(which_cmd wget)"
 
 progress "Checking the latest version of static build..."
 
-BASE='https://raw.githubusercontent.com/firehol/binary-packages/master'
+BASE='https://raw.githubusercontent.com/netdata/binary-packages/master'
 
 LATEST=
 if [ ! -z "${curl}" -a -x "${curl}" ]
diff --git a/kickstart.sh b/kickstart.sh
index cabe0146c..b493802f2 100755
--- a/kickstart.sh
+++ b/kickstart.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env sh
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 # Run me with:
 #
@@ -23,6 +24,8 @@
 #
 # 3. install netdata
 
+# shellcheck disable=SC1117,SC2016,SC2034,SC2039,SC2059,SC2086,SC2119,SC2120,SC2129,SC2162,SC2166,SC2181
+
 umask 022
 
 [ -z "${UID}" ] && UID="$(id -u)"
@@ -31,8 +34,8 @@ umask 022
 # library functions copied from installer/functions.sh
 
 which_cmd() {
-    which "${1}" 2>/dev/null || \
-        command -v "${1}" 2>/dev/null
+    # shellcheck disable=SC2230
+    which "${1}" 2>/dev/null || command -v "${1}" 2>/dev/null
 }
 
 check_cmd() {
@@ -268,7 +271,7 @@ then
     if [ "${HAS_BASH4}" = "1" ]
     then
         tmp="$(mktemp /tmp/netdata-kickstart-XXXXXX)"
-        url="https://raw.githubusercontent.com/firehol/netdata-demo-site/master/install-required-packages.sh"
+        url="https://raw.githubusercontent.com/netdata/netdata-demo-site/master/install-required-packages.sh"
 
         progress "Downloading script to detect required packages..."
         if [ ! -z "${curl}" ]
@@ -327,7 +330,7 @@ then
     if [ ! -d "${SOURCE_DST}/netdata.git" ]
     then
         progress "Downloading netdata source code..."
-        run ${sudo} ${git} clone https://github.com/firehol/netdata.git "${SOURCE_DST}/netdata.git" || fatal "Cannot download netdata source"
+        run ${sudo} ${git} clone https://github.com/netdata/netdata.git "${SOURCE_DST}/netdata.git" || fatal "Cannot download netdata source"
         cd "${SOURCE_DST}/netdata.git" || fatal "Cannot cd to netdata source tree"
     else
         progress "Updating netdata source code..."
diff --git a/libnetdata/Makefile.am b/libnetdata/Makefile.am
new file mode 100644
index 000000000..d2710f0a3
--- /dev/null
+++ b/libnetdata/Makefile.am
@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    adaptive_resortable_list \
+    avl \
+    buffer \
+    clocks \
+    config \
+    dictionary \
+    eval \
+    locks \
+    log \
+    popen \
+    procfile \
+    simple_pattern \
+    socket \
+    statistical \
+    storage_number \
+    threads \
+    url \
+    $(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/Makefile.in b/libnetdata/Makefile.in
new file mode 100644
index 000000000..4ee89a69b
--- /dev/null
+++ b/libnetdata/Makefile.in
@@ -0,0 +1,664 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
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diff --git a/libnetdata/README.md b/libnetdata/README.md
new file mode 100644
index 000000000..545f95984
--- /dev/null
+++ b/libnetdata/README.md
@@ -0,0 +1,6 @@
+# libnetdata
+
+`libnetdata` is a collection of library code that is used by all netdata `C` programs.
+
+
+
diff --git a/libnetdata/adaptive_resortable_list/Makefile.am b/libnetdata/adaptive_resortable_list/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
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index 000000000..229511083
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diff --git a/libnetdata/adaptive_resortable_list/README.md b/libnetdata/adaptive_resortable_list/README.md
new file mode 100644
index 000000000..0ba3ec9b5
--- /dev/null
+++ b/libnetdata/adaptive_resortable_list/README.md
@@ -0,0 +1,93 @@
+
+# Adaptive Re-sortable List (ARL)
+
+This library allows netdata to read a series of `name - value` pairs
+in the **fastest possible way**.
+
+ARLs are used all over netdata, as they are the most
+CPU utilization efficient way to process `/proc` files. They are used to
+process both vertical (csv like) and horizontal (one pair per line) `name - value` pairs.
+
+## How ARL works
+
+It maintains a linked list of all `NAME` (keywords), sorted in the
+order found in the data source. The linked list is kept
+sorted at all times - the data source may change at any time, the
+linked list will adapt at the next iteration.
+
+### Initialization
+
+During initialization (just once), the caller:
+
+- calls `arl_create()` to create the ARL
+
+- calls `arl_expect()` multiple times to register the expected keywords
+
+The library will call the `processor()` function (given to
+`arl_create()`), for each expected keyword found.
+The default `processor()` expects `dst` to be an `unsigned long long *`.
+
+Each `name` keyword may have a different `processor()` (by calling
+`arl_expect_custom()` instead of `arl_expect()`).
+
+### Data collection iterations
+
+For each iteration through the data source, the caller:
+
+- calls `arl_begin()` to initiate a data collection iteration.
+   This is to be called just ONCE every time the source is re-evaluated.
+
+- calls `arl_check()` for each entry read from the file.
+
+### Cleanup
+
+When the caller exits:
+
+- calls `arl_free()` to destroy this and free all memory.
+
+### Performance
+
+ARL maintains a list of `name` keywords found in the data source (even the ones
+that are not useful for data collection).
+
+If the data source maintains the same order on the `name-value` pairs, for each
+each call to `arl_check()` only an `strcmp()` is executed to verify the
+expected order has not changed, a counter is incremented and a pointer is changed.
+So, if the data source has 100 `name-value` pairs, and their order remains constant
+over time, 100 successful `strcmp()` are executed.
+
+In the unlikely event that an iteration sees the data source with a different order,
+for each out-of-order keyword, a full search of the remaining keywords is made. But
+this search uses 32bit hashes, not string comparisons, so it should also be fast. 
+
+When all expectations are satisfied (even in the middle of an iteration),
+the call to `arl_check()` will return 1, to signal the caller to stop the loop,
+saving valuable CPU resources for the rest of the data source. 
+
+In the following test we used alternative methods to process, **1M times**,
+a data source like `/proc/meminfo`, already tokenized, in memory,
+to extract the same number of expected metrics:
+
+test|code|string comparison|number parsing|duration
+:---:|:---:|:---:|:---:|:---:|
+1|if-else-if-else-if|`strcmp()`|`strtoull()`|4630.337 ms
+2|nested loops|inline `simple_hash()` and `strcmp()`|`strtoull()`|1597.481 ms
+3|nested loops|inline `simple_hash()` and `strcmp()`|`str2ull()`|923.523 ms
+4|if-else-if-else-if|inline `simple_hash()` and `strcmp()`|`strtoull()`| 854.574 ms
+5|if-else-if-else-if|statement expression `simple_hash()` and `strcmp()`|`strtoull()`|912.013 ms
+6|if-continue|inline `simple_hash()` and `strcmp()`|`strtoull()`|842.279 ms
+7|if-else-if-else-if|inline `simple_hash()` and `strcmp()`|`str2ull()`|602.837 ms
+8|ARL|ARL|`strtoull()`|350.360 ms
+9|ARL|ARL|`str2ull()`|157.237 ms
+
+Compared to unoptimized code (test No 1: 4.6sec):
+ 
+ - before ARL netdata was using test No **7** with hashing and a custom `str2ull()` to achieve 602ms.
+ - the current ARL implementation is test No **9** that needs only 157ms (29 times faster vs unoptimized code, about 4 times faster vs optimized code).
+
+[Check the source code of this test](../../tests/profile/benchmark-value-pairs.c).
+
+## Limitations
+
+Do not use ARL if the a name/keyword may appear more than once in the
+source data. 
diff --git a/src/adaptive_resortable_list.c b/libnetdata/adaptive_resortable_list/adaptive_resortable_list.c
index c564efff3..7f4c6c53d 100644
--- a/src/adaptive_resortable_list.c
+++ b/libnetdata/adaptive_resortable_list/adaptive_resortable_list.c
@@ -1,4 +1,6 @@
-#include "adaptive_resortable_list.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 // the default processor() of the ARL
 // can be overwritten at arl_create()
@@ -20,6 +22,15 @@ inline void arl_callback_str2kernel_uint_t(const char *name, uint32_t hash, cons
     // fprintf(stderr, "name '%s' with hash %u and value '%s' is %llu\n", name, hash, value, (unsigned long long)*d);
 }
 
+inline void arl_callback_ssize_t(const char *name, uint32_t hash, const char *value, void *dst) {
+    (void)name;
+    (void)hash;
+
+    register ssize_t *d = dst;
+    *d = (ssize_t)str2ll(value, NULL);
+    // fprintf(stderr, "name '%s' with hash %u and value '%s' is %zd\n", name, hash, value, *d);
+}
+
 // create a new ARL
 ARL_BASE *arl_create(const char *name, void (*processor)(const char *, uint32_t, const char *, void *), size_t rechecks) {
     ARL_BASE *base = callocz(1, sizeof(ARL_BASE));
diff --git a/src/adaptive_resortable_list.h b/libnetdata/adaptive_resortable_list/adaptive_resortable_list.h
index d05a8ede7..011ee73d9 100644
--- a/src/adaptive_resortable_list.h
+++ b/libnetdata/adaptive_resortable_list/adaptive_resortable_list.h
@@ -1,43 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
+
 #ifndef NETDATA_ADAPTIVE_RESORTABLE_LIST_H
-#define NETDATA_ADAPTIVE_RESORTABLE_LIST_H
-
-/*
- * ADAPTIVE RE-SORTABLE LIST
- * This structure allows netdata to read a file of NAME VALUE lines
- * in the fastest possible way.
- *
- * It maintains a linked list of all NAME (keywords), sorted in the
- * same order as found in the source data file.
- * The linked list is kept sorted at all times - the source file
- * may change at any time, the list will adapt.
- *
- * The caller:
- *
- * 1. calls arl_create() to create a list
- *
- * 2. calls arl_expect() to register the expected keyword
- *
- * Then:
- *
- * 3. calls arl_begin() to initiate a data collection iteration.
- *    This is to be called just ONCE every time the source is re-scanned.
- *
- * 4. calls arl_check() for each line read from the file.
- *
- * Finally:
- *
- * 5. calls arl_free() to destroy this and free all memory.
- *
- * The program will call the processor() function, given to
- * arl_create(), for each expected keyword found.
- * The default processor() expects dst to be an unsigned long long *.
- *
- * LIMITATIONS
- * DO NOT USE THIS IF THE A NAME/KEYWORD MAY APPEAR MORE THAN
- * ONCE IN THE SOURCE DATA SET.
- */
-
-#include "common.h"
+#define NETDATA_ADAPTIVE_RESORTABLE_LIST_H 1
 
 #define ARL_ENTRY_FLAG_FOUND    0x01    // the entry has been found in the source data
 #define ARL_ENTRY_FLAG_EXPECTED 0x02    // the entry is expected by the program
@@ -116,6 +82,7 @@ extern void arl_begin(ARL_BASE *base);
 
 extern void arl_callback_str2ull(const char *name, uint32_t hash, const char *value, void *dst);
 extern void arl_callback_str2kernel_uint_t(const char *name, uint32_t hash, const char *value, void *dst);
+extern void arl_callback_ssize_t(const char *name, uint32_t hash, const char *value, void *dst);
 
 // check a keyword against the ARL
 // this is to be called for each keyword read from source data
diff --git a/libnetdata/avl/Makefile.am b/libnetdata/avl/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/avl/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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+
+
+dist_noinst_DATA = \
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diff --git a/libnetdata/avl/Makefile.in b/libnetdata/avl/Makefile.in
new file mode 100644
index 000000000..5982eb85b
--- /dev/null
+++ b/libnetdata/avl/Makefile.in
@@ -0,0 +1,464 @@
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+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
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+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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diff --git a/libnetdata/avl/README.md b/libnetdata/avl/README.md
new file mode 100644
index 000000000..48212a715
--- /dev/null
+++ b/libnetdata/avl/README.md
@@ -0,0 +1,11 @@
+# AVL
+
+AVL is a library indexing objects in B-Trees.
+
+`avl_insert()`, `avl_remove()` and `avl_search()` are adaptations
+of the AVL algorithm found in `libavl` v2.0.3, so that they do not
+use any memory allocations and their memory footprint is optimized
+(by eliminating non-necessary data members).
+
+In addition to the above, this version of AVL, provides versions using locks
+and traversal functions.
\ No newline at end of file
diff --git a/src/avl.c b/libnetdata/avl/avl.c
index a2c6911e7..c44bef307 100644
--- a/src/avl.c
+++ b/libnetdata/avl/avl.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 /* ------------------------------------------------------------------------- */
 /*
@@ -10,7 +12,6 @@
  * libavl - library for manipulation of binary trees.
  * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004 Free Software
  * Foundation, Inc.
- * GNU Lesser General Public License
 */
 
 
@@ -44,7 +45,7 @@ avl *avl_insert(avl_tree *tree, avl *item) {
     avl *p, *q; /* Iterator, and parent. */
     avl *n;     /* Newly inserted node. */
     avl *w;     /* New root of rebalanced subtree. */
-    int dir;                /* Direction to descend. */
+    unsigned char dir; /* Direction to descend. */
 
     unsigned char da[AVL_MAX_HEIGHT]; /* Cached comparison results. */
     int k = 0;              /* Number of cached results. */
@@ -61,7 +62,7 @@ avl *avl_insert(avl_tree *tree, avl *item) {
 
         if (p->avl_balance != 0)
             z = q, y = p, k = 0;
-        da[k++] = dir = (cmp > 0);
+        da[k++] = dir = (unsigned char)(cmp > 0);
     }
 
     n = q->avl_link[dir] = item;
@@ -149,7 +150,7 @@ avl *avl_remove(avl_tree *tree, avl *item) {
     k = 0;
     p = (avl *) &tree->root;
     for(cmp = -1; cmp != 0; cmp = tree->compar(item, p)) {
-        int dir = (cmp > 0);
+        unsigned char dir = (unsigned char)(cmp > 0);
 
         pa[k] = p;
         da[k++] = dir;
@@ -283,7 +284,7 @@ avl *avl_remove(avl_tree *tree, avl *item) {
 // ---------------------------
 // traversing
 
-int avl_walker(avl *node, int (*callback)(void *entry, void *data), void *data) {
+int avl_walker(avl *node, int (*callback)(void * /*entry*/, void * /*data*/), void *data) {
     int total = 0, ret = 0;
 
     if(node->avl_link[0]) {
@@ -305,9 +306,9 @@ int avl_walker(avl *node, int (*callback)(void *entry, void *data), void *data)
     return total;
 }
 
-int avl_traverse(avl_tree *t, int (*callback)(void *entry, void *data), void *data) {
-    if(t->root)
-        return avl_walker(t->root, callback, data);
+int avl_traverse(avl_tree *tree, int (*callback)(void * /*entry*/, void * /*data*/), void *data) {
+    if(tree->root)
+        return avl_walker(tree->root, callback, data);
     else
         return 0;
 }
@@ -348,16 +349,16 @@ void avl_unlock(avl_tree_lock *t) {
 // ---------------------------
 // operations with locking
 
-void avl_init_lock(avl_tree_lock *t, int (*compar)(void *a, void *b)) {
-    avl_init(&t->avl_tree, compar);
+void avl_init_lock(avl_tree_lock *tree, int (*compar)(void * /*a*/, void * /*b*/)) {
+    avl_init(&tree->avl_tree, compar);
 
 #ifndef AVL_WITHOUT_PTHREADS
     int lock;
 
 #ifdef AVL_LOCK_WITH_MUTEX
-    lock = netdata_mutex_init(&t->mutex, NULL);
+    lock = netdata_mutex_init(&tree->mutex, NULL);
 #else
-    lock = netdata_rwlock_init(&t->rwlock);
+    lock = netdata_rwlock_init(&tree->rwlock);
 #endif
 
     if(lock != 0)
@@ -366,38 +367,38 @@ void avl_init_lock(avl_tree_lock *t, int (*compar)(void *a, void *b)) {
 #endif /* AVL_WITHOUT_PTHREADS */
 }
 
-avl *avl_search_lock(avl_tree_lock *t, avl *a) {
-    avl_read_lock(t);
-    avl *ret = avl_search(&t->avl_tree, a);
-    avl_unlock(t);
+avl *avl_search_lock(avl_tree_lock *tree, avl *item) {
+    avl_read_lock(tree);
+    avl *ret = avl_search(&tree->avl_tree, item);
+    avl_unlock(tree);
     return ret;
 }
 
-avl * avl_remove_lock(avl_tree_lock *t, avl *a) {
-    avl_write_lock(t);
-    avl *ret = avl_remove(&t->avl_tree, a);
-    avl_unlock(t);
+avl * avl_remove_lock(avl_tree_lock *tree, avl *item) {
+    avl_write_lock(tree);
+    avl *ret = avl_remove(&tree->avl_tree, item);
+    avl_unlock(tree);
     return ret;
 }
 
-avl *avl_insert_lock(avl_tree_lock *t, avl *a) {
-    avl_write_lock(t);
-    avl * ret = avl_insert(&t->avl_tree, a);
-    avl_unlock(t);
+avl *avl_insert_lock(avl_tree_lock *tree, avl *item) {
+    avl_write_lock(tree);
+    avl * ret = avl_insert(&tree->avl_tree, item);
+    avl_unlock(tree);
     return ret;
 }
 
-int avl_traverse_lock(avl_tree_lock *t, int (*callback)(void *entry, void *data), void *data) {
+int avl_traverse_lock(avl_tree_lock *tree, int (*callback)(void * /*entry*/, void * /*data*/), void *data) {
     int ret;
-    avl_read_lock(t);
-    ret = avl_traverse(&t->avl_tree, callback, data);
-    avl_unlock(t);
+    avl_read_lock(tree);
+    ret = avl_traverse(&tree->avl_tree, callback, data);
+    avl_unlock(tree);
     return ret;
 }
 
-void avl_init(avl_tree *t, int (*compar)(void *a, void *b)) {
-    t->root = NULL;
-    t->compar = compar;
+void avl_init(avl_tree *tree, int (*compar)(void * /*a*/, void * /*b*/)) {
+    tree->root = NULL;
+    tree->compar = compar;
 }
 
-// ------------------
\ No newline at end of file
+// ------------------
diff --git a/src/avl.h b/libnetdata/avl/avl.h
index 19648cd1d..070bb3d3d 100644
--- a/src/avl.h
+++ b/libnetdata/avl/avl.h
@@ -1,7 +1,10 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 
 #ifndef _AVL_H
 #define _AVL_H 1
 
+#include "../libnetdata.h"
+
 /* Maximum AVL tree height. */
 #ifndef AVL_MAX_HEIGHT
 #define AVL_MAX_HEIGHT 92
@@ -56,31 +59,31 @@ typedef struct avl_tree_lock {
  * a is linked directly to the tree, so it has to
  * be properly allocated by the caller.
  */
-avl *avl_insert_lock(avl_tree_lock *t, avl *a) NEVERNULL WARNUNUSED;
-avl *avl_insert(avl_tree *t, avl *a) NEVERNULL WARNUNUSED;
+avl *avl_insert_lock(avl_tree_lock *tree, avl *item) NEVERNULL WARNUNUSED;
+avl *avl_insert(avl_tree *tree, avl *item) NEVERNULL WARNUNUSED;
 
 /* Remove an element a from the AVL tree t
  * returns a pointer to the removed element
  * or NULL if an element equal to a is not found
  * (equal as returned by t->compar())
  */
-avl *avl_remove_lock(avl_tree_lock *t, avl *a) WARNUNUSED;
-avl *avl_remove(avl_tree *t, avl *a) WARNUNUSED;
+avl *avl_remove_lock(avl_tree_lock *tree, avl *item) WARNUNUSED;
+avl *avl_remove(avl_tree *tree, avl *item) WARNUNUSED;
 
 /* Find the element into the tree that equal to a
  * (equal as returned by t->compar())
  * returns NULL is no element is equal to a
  */
-avl *avl_search_lock(avl_tree_lock *t, avl *a);
-avl *avl_search(avl_tree *t, avl *a);
+avl *avl_search_lock(avl_tree_lock *tree, avl *item);
+avl *avl_search(avl_tree *tree, avl *item);
 
 /* Initialize the avl_tree_lock
  */
-void avl_init_lock(avl_tree_lock *t, int (*compar)(void *a, void *b));
-void avl_init(avl_tree *t, int (*compar)(void *a, void *b));
+void avl_init_lock(avl_tree_lock *tree, int (*compar)(void *a, void *b));
+void avl_init(avl_tree *tree, int (*compar)(void *a, void *b));
 
 
-int avl_traverse_lock(avl_tree_lock *t, int (*callback)(void *entry, void *data), void *data);
-int avl_traverse(avl_tree *t, int (*callback)(void *entry, void *data), void *data);
+int avl_traverse_lock(avl_tree_lock *tree, int (*callback)(void *entry, void *data), void *data);
+int avl_traverse(avl_tree *tree, int (*callback)(void *entry, void *data), void *data);
 
 #endif /* avl.h */
diff --git a/libnetdata/buffer/Makefile.am b/libnetdata/buffer/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/buffer/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/buffer/Makefile.in b/libnetdata/buffer/Makefile.in
new file mode 100644
index 000000000..21bbd3cc9
--- /dev/null
+++ b/libnetdata/buffer/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
+# SPDX-License-Identifier: GPL-3.0-or-later
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+OPTIONAL_UUID_CLFAGS = @OPTIONAL_UUID_CLFAGS@
+OPTIONAL_UUID_LIBS = @OPTIONAL_UUID_LIBS@
+OPTIONAL_ZLIB_CLFAGS = @OPTIONAL_ZLIB_CLFAGS@
+OPTIONAL_ZLIB_LIBS = @OPTIONAL_ZLIB_LIBS@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
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+PACKAGE_RPM_RELEASE = @PACKAGE_RPM_RELEASE@
+PACKAGE_RPM_VERSION = @PACKAGE_RPM_VERSION@
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+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PTHREAD_CC = @PTHREAD_CC@
+PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
+PTHREAD_LIBS = @PTHREAD_LIBS@
+SET_MAKE = @SET_MAKE@
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+SSE_CANDIDATE = @SSE_CANDIDATE@
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+UUID_CFLAGS = @UUID_CFLAGS@
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+VERSION = @VERSION@
+ZLIB_CFLAGS = @ZLIB_CFLAGS@
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+configdir = @configdir@
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+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
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+pythondir = @pythondir@
+registrydir = @registrydir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+varlibdir = @varlibdir@
+webdir = @webdir@
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu libnetdata/buffer/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu libnetdata/buffer/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
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+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
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+html-am:
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+
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+install-ps: install-ps-am
+
+install-ps-am:
+
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+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
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+ps: ps-am
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+ps-am:
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+uninstall-am:
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+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/buffer/README.md b/libnetdata/buffer/README.md
new file mode 100644
index 000000000..a7cfef89d
--- /dev/null
+++ b/libnetdata/buffer/README.md
@@ -0,0 +1,11 @@
+# BUFFER
+
+`BUFFER` is a convenience library for working with strings in `C`.
+Mainly, `BUFFER`s eliminate the need for tracking the string length, thus providing
+a safe alternative for string operations.
+
+Also, they are super fast in printing and appending data to the string and its `buffer_strlen()`
+is just a lookup (it does not traverse the string).
+
+Netdata uses `BUFFER`s for preparing web responses and buffering data to be sent upstream or
+to backend databases.
\ No newline at end of file
diff --git a/src/web_buffer.c b/libnetdata/buffer/buffer.c
index 50c76f6d6..50672324b 100644
--- a/src/web_buffer.c
+++ b/libnetdata/buffer/buffer.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 #define BUFFER_OVERFLOW_EOF "EOF"
 
@@ -379,8 +381,7 @@ void buffer_free(BUFFER *b) {
     freez(b);
 }
 
-void buffer_increase(BUFFER *b, size_t free_size_required)
-{
+void buffer_increase(BUFFER *b, size_t free_size_required) {
     buffer_overflow_check(b);
 
     size_t left = b->size - b->len;
diff --git a/src/web_buffer.h b/libnetdata/buffer/buffer.h
index 694c9d4ce..8e431bfd5 100644
--- a/src/web_buffer.h
+++ b/libnetdata/buffer/buffer.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_WEB_BUFFER_H
 #define NETDATA_WEB_BUFFER_H 1
 
+#include "../libnetdata.h"
+
 #define WEB_DATA_LENGTH_INCREASE_STEP 1024
 
 typedef struct web_buffer {
diff --git a/libnetdata/clocks/Makefile.am b/libnetdata/clocks/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/clocks/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/clocks/Makefile.in b/libnetdata/clocks/Makefile.in
new file mode 100644
index 000000000..118d60317
--- /dev/null
+++ b/libnetdata/clocks/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/libnetdata/clocks/README.md b/libnetdata/clocks/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/clocks/README.md
diff --git a/libnetdata/clocks/clocks.c b/libnetdata/clocks/clocks.c
new file mode 100644
index 000000000..f303ccddc
--- /dev/null
+++ b/libnetdata/clocks/clocks.c
@@ -0,0 +1,204 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
+
+#ifndef HAVE_CLOCK_GETTIME
+inline int clock_gettime(clockid_t clk_id, struct timespec *ts) {
+    struct timeval tv;
+    if(unlikely(gettimeofday(&tv, NULL) == -1)) {
+        error("gettimeofday() failed.");
+        return -1;
+    }
+    ts->tv_sec = tv.tv_sec;
+    ts->tv_nsec = (tv.tv_usec % USEC_PER_SEC) * NSEC_PER_USEC;
+    return 0;
+}
+#endif
+
+static inline time_t now_sec(clockid_t clk_id) {
+    struct timespec ts;
+    if(unlikely(clock_gettime(clk_id, &ts) == -1)) {
+        error("clock_gettime(%d, &timespec) failed.", clk_id);
+        return 0;
+    }
+    return ts.tv_sec;
+}
+
+static inline usec_t now_usec(clockid_t clk_id) {
+    struct timespec ts;
+    if(unlikely(clock_gettime(clk_id, &ts) == -1)) {
+        error("clock_gettime(%d, &timespec) failed.", clk_id);
+        return 0;
+    }
+    return (usec_t)ts.tv_sec * USEC_PER_SEC + (ts.tv_nsec % NSEC_PER_SEC) / NSEC_PER_USEC;
+}
+
+static inline int now_timeval(clockid_t clk_id, struct timeval *tv) {
+    struct timespec ts;
+
+    if(unlikely(clock_gettime(clk_id, &ts) == -1)) {
+        error("clock_gettime(%d, &timespec) failed.", clk_id);
+        tv->tv_sec = 0;
+        tv->tv_usec = 0;
+        return -1;
+    }
+
+    tv->tv_sec = ts.tv_sec;
+    tv->tv_usec = (suseconds_t)((ts.tv_nsec % NSEC_PER_SEC) / NSEC_PER_USEC);
+    return 0;
+}
+
+inline time_t now_realtime_sec(void) {
+    return now_sec(CLOCK_REALTIME);
+}
+
+inline usec_t now_realtime_usec(void) {
+    return now_usec(CLOCK_REALTIME);
+}
+
+inline int now_realtime_timeval(struct timeval *tv) {
+    return now_timeval(CLOCK_REALTIME, tv);
+}
+
+inline time_t now_monotonic_sec(void) {
+    return now_sec(CLOCK_MONOTONIC);
+}
+
+inline usec_t now_monotonic_usec(void) {
+    return now_usec(CLOCK_MONOTONIC);
+}
+
+inline int now_monotonic_timeval(struct timeval *tv) {
+    return now_timeval(CLOCK_MONOTONIC, tv);
+}
+
+inline time_t now_boottime_sec(void) {
+    return now_sec(CLOCK_BOOTTIME);
+}
+
+inline usec_t now_boottime_usec(void) {
+    return now_usec(CLOCK_BOOTTIME);
+}
+
+inline int now_boottime_timeval(struct timeval *tv) {
+    return now_timeval(CLOCK_BOOTTIME, tv);
+}
+
+inline usec_t timeval_usec(struct timeval *tv) {
+    return (usec_t)tv->tv_sec * USEC_PER_SEC + (tv->tv_usec % USEC_PER_SEC);
+}
+
+inline msec_t timeval_msec(struct timeval *tv) {
+    return (msec_t)tv->tv_sec * MSEC_PER_SEC + ((tv->tv_usec % USEC_PER_SEC) / MSEC_PER_SEC);
+}
+
+inline susec_t dt_usec_signed(struct timeval *now, struct timeval *old) {
+    usec_t ts1 = timeval_usec(now);
+    usec_t ts2 = timeval_usec(old);
+
+    if(likely(ts1 >= ts2)) return (susec_t)(ts1 - ts2);
+    return -((susec_t)(ts2 - ts1));
+}
+
+inline usec_t dt_usec(struct timeval *now, struct timeval *old) {
+    usec_t ts1 = timeval_usec(now);
+    usec_t ts2 = timeval_usec(old);
+    return (ts1 > ts2) ? (ts1 - ts2) : (ts2 - ts1);
+}
+
+inline void heartbeat_init(heartbeat_t *hb)
+{
+    hb->monotonic = hb->realtime = 0ULL;
+}
+
+// waits for the next heartbeat
+// it waits using the monotonic clock
+// it returns the dt using the realtime clock
+
+usec_t heartbeat_next(heartbeat_t *hb, usec_t tick) {
+    heartbeat_t now;
+    now.monotonic = now_monotonic_usec();
+    now.realtime  = now_realtime_usec();
+
+    usec_t next_monotonic = now.monotonic - (now.monotonic % tick) + tick;
+
+    while(now.monotonic < next_monotonic) {
+        sleep_usec(next_monotonic - now.monotonic);
+        now.monotonic = now_monotonic_usec();
+        now.realtime  = now_realtime_usec();
+    }
+
+    if(likely(hb->realtime != 0ULL)) {
+        usec_t dt_monotonic = now.monotonic - hb->monotonic;
+        usec_t dt_realtime  = now.realtime - hb->realtime;
+
+        hb->monotonic = now.monotonic;
+        hb->realtime  = now.realtime;
+
+        if(unlikely(dt_monotonic >= tick + tick / 2)) {
+            errno = 0;
+            error("heartbeat missed %llu monotonic microseconds", dt_monotonic - tick);
+        }
+
+        return dt_realtime;
+    }
+    else {
+        hb->monotonic = now.monotonic;
+        hb->realtime  = now.realtime;
+        return 0ULL;
+    }
+}
+
+// returned the elapsed time, since the last heartbeat
+// using the monotonic clock
+
+inline usec_t heartbeat_monotonic_dt_to_now_usec(heartbeat_t *hb) {
+    if(!hb || !hb->monotonic) return 0ULL;
+    return now_monotonic_usec() - hb->monotonic;
+}
+
+int sleep_usec(usec_t usec) {
+
+#ifndef NETDATA_WITH_USLEEP
+    // we expect microseconds (1.000.000 per second)
+    // but timespec is nanoseconds (1.000.000.000 per second)
+    struct timespec rem, req = {
+            .tv_sec = (time_t) (usec / 1000000),
+            .tv_nsec = (suseconds_t) ((usec % 1000000) * 1000)
+    };
+
+    while (nanosleep(&req, &rem) == -1) {
+        if (likely(errno == EINTR)) {
+            debug(D_SYSTEM, "nanosleep() interrupted (while sleeping for %llu microseconds).", usec);
+            req.tv_sec = rem.tv_sec;
+            req.tv_nsec = rem.tv_nsec;
+        } else {
+            error("Cannot nanosleep() for %llu microseconds.", usec);
+            break;
+        }
+    }
+
+    return 0;
+#else
+    int ret = usleep(usec);
+    if(unlikely(ret == -1 && errno == EINVAL)) {
+        // on certain systems, usec has to be up to 999999
+        if(usec > 999999) {
+            int counter = usec / 999999;
+            while(counter--)
+                usleep(999999);
+
+            usleep(usec % 999999);
+        }
+        else {
+            error("Cannot usleep() for %llu microseconds.", usec);
+            return ret;
+        }
+    }
+
+    if(ret != 0)
+        error("usleep() failed for %llu microseconds.", usec);
+
+    return ret;
+#endif
+}
diff --git a/src/clocks.h b/libnetdata/clocks/clocks.h
index ca5715254..d576d86b9 100644
--- a/src/clocks.h
+++ b/libnetdata/clocks/clocks.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_CLOCKS_H
 #define NETDATA_CLOCKS_H 1
 
+#include "../libnetdata.h"
+
 #ifndef HAVE_STRUCT_TIMESPEC
 struct timespec {
     time_t tv_sec;  /* seconds */
@@ -17,7 +21,10 @@ typedef unsigned long long msec_t;
 typedef unsigned long long usec_t;
 typedef long long susec_t;
 
-typedef usec_t heartbeat_t;
+typedef struct heartbeat {
+    usec_t monotonic;
+    usec_t realtime;
+} heartbeat_t;
 
 /* Linux value is as good as any other */
 #ifndef CLOCK_REALTIME
@@ -105,7 +112,7 @@ extern time_t now_boottime_sec(void);
 extern usec_t now_boottime_usec(void);
 
 
-extern usec_t timeval_usec(struct timeval *ts);
+extern usec_t timeval_usec(struct timeval *tv);
 extern msec_t timeval_msec(struct timeval *tv);
 
 extern usec_t dt_usec(struct timeval *now, struct timeval *old);
@@ -119,6 +126,8 @@ extern void heartbeat_init(heartbeat_t *hb);
 extern usec_t heartbeat_next(heartbeat_t *hb, usec_t tick);
 
 /* Returns elapsed time in microseconds since last heartbeat */
-extern usec_t heartbeat_dt_usec(heartbeat_t *hb);
+extern usec_t heartbeat_monotonic_dt_to_now_usec(heartbeat_t *hb);
+
+extern int sleep_usec(usec_t usec);
 
 #endif /* NETDATA_CLOCKS_H */
diff --git a/libnetdata/config/Makefile.am b/libnetdata/config/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/config/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/config/Makefile.in b/libnetdata/config/Makefile.in
new file mode 100644
index 000000000..940ccb8d8
--- /dev/null
+++ b/libnetdata/config/Makefile.in
@@ -0,0 +1,464 @@
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+# @configure_input@
+
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+
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+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/config/README.md b/libnetdata/config/README.md
new file mode 100644
index 000000000..5e170caa9
--- /dev/null
+++ b/libnetdata/config/README.md
@@ -0,0 +1,46 @@
+# netdata ini config files
+
+Configuration files `netdata.conf` and `stream.conf` are netdata ini files.
+
+## Motivation
+
+The whole idea came up when we were evaluating the documentation involved
+in maintaining a complex configuration system. Our intention was to give
+configuration options for everything imaginable. But then, documenting all
+these options would require a tremendous amount of time, users would have
+to search through endless pages for the option they need, etc.
+
+We concluded then that **configuring software like that is a waste of time
+and effort**. Of course there must be plenty of configuration options, but
+the implementation itself should require a lot less effort for both the
+developers and the users.
+
+So, we did this:
+
+1. No configuration is required to run netdata
+2. There are plenty of options to tweak
+3. There is minimal documentation (or no at all)
+
+## Why this works?
+
+The configuration file is a `name = value` dictionary with `[sections]`.
+Write whatever you like there as long as it follows this simple format.
+
+Netdata loads this dictionary and then when the code needs a value from
+it, it just looks up the `name` in the dictionary at the proper `section`.
+In all places, in the code, there are both the `names` and their
+`default values`, so if something is not found in the configuration
+file, the default is used. The lookup is made using B-Trees and hashes
+(no string comparisons), so they are super fast. Also the `names` of the
+settings can be `my super duper setting that once set to yes, will turn the world upside down = no`
+- so goodbye to most of the documentation involved.
+
+Next, netdata can generate a valid configuration for the user to edit.
+No need to remember anything or copy and paste settings. Just get the
+configuration from the server (`/netdata.conf` on your netdata server),
+edit it and save it.
+
+Last, what about options you believe you have set, but you misspelled?
+When you get the configuration file from the server, there will be a
+comment above all `name = value` pairs the server does not use.
+So you know that whatever you wrote there, is not used.
diff --git a/src/appconfig.c b/libnetdata/config/appconfig.c
index 2424864b5..411538446 100644
--- a/src/appconfig.c
+++ b/libnetdata/config/appconfig.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 #define CONFIG_FILE_LINE_MAX ((CONFIG_MAX_NAME + CONFIG_MAX_VALUE + 1024) * 2)
 
@@ -7,11 +9,11 @@
 
 #define CONFIG_VALUE_LOADED  0x01 // has been loaded from the config
 #define CONFIG_VALUE_USED    0x02 // has been accessed from the program
-#define CONFIG_VALUE_CHANGED 0x04 // has been changed from the loaded value
+#define CONFIG_VALUE_CHANGED 0x04 // has been changed from the loaded value or the internal default value
 #define CONFIG_VALUE_CHECKED 0x08 // has been checked if the value is different from the default
 
 struct config_option {
-    avl avl;                // the index - this has to be first!
+    avl avl;                // the index entry of this entry - this has to be first!
 
     uint8_t flags;
     uint32_t hash;          // a simple hash to speed up searching
@@ -24,7 +26,7 @@ struct config_option {
 };
 
 struct section {
-    avl avl;
+    avl avl;                // the index entry of this section - this has to be first!
 
     uint32_t hash;          // a simple hash to speed up searching
                             // we first compare hashes, and only if the hashes are equal we do string comparisons
@@ -40,25 +42,6 @@ struct section {
                             // readers are protected using the rwlock in avl_tree_lock
 };
 
-static int appconfig_section_compare(void *a, void *b);
-
-struct config netdata_config = {
-        .sections = NULL,
-        .mutex = NETDATA_MUTEX_INITIALIZER,
-        .index = {
-            { NULL, appconfig_section_compare },
-            AVL_LOCK_INITIALIZER
-        }
-};
-
-struct config stream_config = {
-        .sections = NULL,
-        .mutex = NETDATA_MUTEX_INITIALIZER,
-        .index = {
-                { NULL, appconfig_section_compare },
-                AVL_LOCK_INITIALIZER
-        }
-};
 
 // ----------------------------------------------------------------------------
 // locking
@@ -104,7 +87,7 @@ static struct config_option *appconfig_option_index_find(struct section *co, con
 // ----------------------------------------------------------------------------
 // config sections index
 
-static int appconfig_section_compare(void *a, void *b) {
+int appconfig_section_compare(void *a, void *b) {
     if(((struct section *)a)->hash < ((struct section *)b)->hash) return -1;
     else if(((struct section *)a)->hash > ((struct section *)b)->hash) return 1;
     else return strcmp(((struct section *)a)->name, ((struct section *)b)->name);
@@ -445,7 +428,7 @@ int appconfig_load(struct config *root, char *filename, int overwrite_used)
 
     FILE *fp = fopen(filename, "r");
     if(!fp) {
-        error("CONFIG: cannot open file '%s'", filename);
+        // info("CONFIG: cannot open file '%s'. Using internal defaults.", filename);
         return 0;
     }
 
@@ -493,10 +476,8 @@ int appconfig_load(struct config *root, char *filename, int overwrite_used)
             error("CONFIG: ignoring line %d of file '%s', name is empty.", line, filename);
             continue;
         }
-        if(!value) {
-            debug(D_CONFIG, "CONFIG: ignoring line %d of file '%s', value is empty.", line, filename);
-            continue;
-        }
+
+        if(!value) value = "";
 
         struct config_option *cv = appconfig_option_index_find(co, name, 0);
 
diff --git a/libnetdata/config/appconfig.h b/libnetdata/config/appconfig.h
new file mode 100644
index 000000000..6ac666d8b
--- /dev/null
+++ b/libnetdata/config/appconfig.h
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+/*
+ * This section manages ini config files, like netdata.conf and stream.conf
+ *
+ * It is organized like this:
+ *
+ * struct config (i.e. netdata.conf or stream.conf)
+ *   .sections    = a linked list of struct section
+ *   .mutex       = a mutex to protect the above linked list due to multi-threading
+ *   .index       = an AVL tree of struct section
+ *
+ * struct section (i.e. [global] or [health] of netdata.conf)
+ *   .value       = a linked list of struct config_option
+ *   .mutex       = a mutex to protect the above linked list due to multi-threading
+ *   .value_index = an AVL tree of struct config_option
+ *
+ * struct config_option (ie. a name-value pair for each ini file option)
+ *
+ * The following operations on name-value options are supported:
+ *    SET           to set the value of an option
+ *    SET DEFAULT   to set the value and the default value of an option
+ *    GET           to get the value of an option
+ *    EXISTS        to check if an option exists
+ *    MOVE          to move an option from a section to another section, and/or rename it
+ *
+ *    GET and SET operations are provided for the following data types:
+ *                  STRING
+ *                  NUMBER (long long)
+ *                  FLOAT (long double)
+ *                  BOOLEAN (false, true)
+ *                  BOOLEAN ONDEMAND (false, true, auto)
+ *
+ *   GET and SET operations create struct config_option, if it is not already present.
+ *   This allows netdata to run even without netdata.conf and stream.conf. The internal
+ *   defaults are used to create the structure that should exist in the ini file and the config
+ *   file can be downloaded from the server.
+ *
+ *   Also 2 operations are supported for the whole config file:
+ *
+ *     LOAD         To load the ini file from disk
+ *     GENERATE     To generate the ini file (this is used to download the ini file from the server)
+ *
+ * For each option (name-value pair), the system maintains 4 flags:
+ *   LOADED   to indicate that the value has been loaded from the file
+ *   USED     to indicate that netdata used the value
+ *   CHANGED  to indicate that the value has been changed from the loaded value or the internal default value
+ *   CHECKED  is used internally for optimization (to avoid an strcmp() every time GET is called).
+ *
+ * TODO:
+ * 1. The linked lists and the mutexes can be removed and the AVL trees can become DICTIONARY.
+ *    This part of the code was written before we add traversal to AVL.
+ *
+ * 2. High level data types could be supported, to simplify the rest of the code:
+ *       MULTIPLE CHOICE  to let the user select one of the supported keywords
+ *                        this would allow users see in comments the available options
+ *
+ *       SIMPLE PATTERN   to let the user define netdata SIMPLE PATTERNS
+ *
+ * 3. Sorting of options should be supported.
+ *    Today, when the ini file is downloaded from the server, the options are shown in the order
+ *    they appear in the linked list (the order they were added, listing changed options first).
+ *    If we remove the linked list, the order they appear in the AVL tree will be used (which is
+ *    random due to simple_hash()).
+ *    Ideally, we support sorting of options when generating the ini file.
+ *
+ * 4. There is no free() operation. So, memory is freed on netdata exit.
+ *
+ * 5. Avoid memory fragmentation
+ *    Since entries are created from multiple threads and a lot of allocations are required
+ *    for each config_option, fragmentation can be a problem for IoT.
+ *
+ * 6. Although this way of managing options is quite flexible and dynamic, it wastes memory
+ *    for the names of the options. Since most of the option names are static, we could provide
+ *    a method to allocate only the dynamic option names.
+ */
+
+#ifndef NETDATA_CONFIG_H
+#define NETDATA_CONFIG_H 1
+
+#include "../libnetdata.h"
+
+#define CONFIG_FILENAME "netdata.conf"
+
+#define CONFIG_SECTION_GLOBAL   "global"
+#define CONFIG_SECTION_WEB      "web"
+#define CONFIG_SECTION_STATSD   "statsd"
+#define CONFIG_SECTION_PLUGINS  "plugins"
+#define CONFIG_SECTION_REGISTRY "registry"
+#define CONFIG_SECTION_HEALTH   "health"
+#define CONFIG_SECTION_BACKEND  "backend"
+#define CONFIG_SECTION_STREAM   "stream"
+
+// these are used to limit the configuration names and values lengths
+// they are not enforced by config.c functions (they will strdup() all strings, no matter of their length)
+#define CONFIG_MAX_NAME 1024
+#define CONFIG_MAX_VALUE 2048
+
+struct config {
+    struct section *sections;
+    netdata_mutex_t mutex;
+    avl_tree_lock index;
+};
+
+#define CONFIG_BOOLEAN_INVALID 100  // an invalid value to check for validity (used as default initialization when needed)
+
+#define CONFIG_BOOLEAN_NO   0       // disabled
+#define CONFIG_BOOLEAN_YES  1       // enabled
+
+#ifndef CONFIG_BOOLEAN_AUTO
+#define CONFIG_BOOLEAN_AUTO 2       // enabled if it has useful info when enabled
+#endif
+
+extern int appconfig_load(struct config *root, char *filename, int overwrite_used);
+
+extern char *appconfig_get(struct config *root, const char *section, const char *name, const char *default_value);
+extern long long appconfig_get_number(struct config *root, const char *section, const char *name, long long value);
+extern LONG_DOUBLE appconfig_get_float(struct config *root, const char *section, const char *name, LONG_DOUBLE value);
+extern int appconfig_get_boolean(struct config *root, const char *section, const char *name, int value);
+extern int appconfig_get_boolean_ondemand(struct config *root, const char *section, const char *name, int value);
+
+extern const char *appconfig_set(struct config *root, const char *section, const char *name, const char *value);
+extern const char *appconfig_set_default(struct config *root, const char *section, const char *name, const char *value);
+extern long long appconfig_set_number(struct config *root, const char *section, const char *name, long long value);
+extern LONG_DOUBLE appconfig_set_float(struct config *root, const char *section, const char *name, LONG_DOUBLE value);
+extern int appconfig_set_boolean(struct config *root, const char *section, const char *name, int value);
+
+extern int appconfig_exists(struct config *root, const char *section, const char *name);
+extern int appconfig_move(struct config *root, const char *section_old, const char *name_old, const char *section_new, const char *name_new);
+
+extern void appconfig_generate(struct config *root, BUFFER *wb, int only_changed);
+
+extern int appconfig_section_compare(void *a, void *b);
+
+#endif /* NETDATA_CONFIG_H */
diff --git a/libnetdata/dictionary/Makefile.am b/libnetdata/dictionary/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/dictionary/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/dictionary/Makefile.in b/libnetdata/dictionary/Makefile.in
new file mode 100644
index 000000000..bafd64a8a
--- /dev/null
+++ b/libnetdata/dictionary/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+
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diff --git a/libnetdata/dictionary/README.md b/libnetdata/dictionary/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/dictionary/README.md
diff --git a/src/dictionary.c b/libnetdata/dictionary/dictionary.c
index 512b4bbe6..dd94a801d 100644
--- a/src/dictionary.c
+++ b/libnetdata/dictionary/dictionary.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 // ----------------------------------------------------------------------------
 // dictionary statistics
diff --git a/src/dictionary.h b/libnetdata/dictionary/dictionary.h
index f028dbb30..61b9bfc61 100644
--- a/src/dictionary.h
+++ b/libnetdata/dictionary/dictionary.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_DICTIONARY_H
 #define NETDATA_DICTIONARY_H 1
 
+#include "../libnetdata.h"
+
 struct dictionary_stats {
     unsigned long long inserts;
     unsigned long long deletes;
@@ -35,7 +39,7 @@ typedef struct dictionary {
 
 extern DICTIONARY *dictionary_create(uint8_t flags);
 extern void dictionary_destroy(DICTIONARY *dict);
-extern void *dictionary_set(DICTIONARY *dict, const char *name, void *value, size_t value_len);
+extern void *dictionary_set(DICTIONARY *dict, const char *name, void *value, size_t value_len) NEVERNULL;
 extern void *dictionary_get(DICTIONARY *dict, const char *name);
 extern int dictionary_del(DICTIONARY *dict, const char *name);
 
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new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/eval/Makefile.am
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diff --git a/libnetdata/eval/Makefile.in b/libnetdata/eval/Makefile.in
new file mode 100644
index 000000000..0b8341b03
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@@ -0,0 +1,464 @@
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+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu libnetdata/eval/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/eval/README.md b/libnetdata/eval/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/eval/README.md
diff --git a/src/eval.c b/libnetdata/eval/eval.c
index 84369f6d4..0316edac0 100644
--- a/src/eval.c
+++ b/libnetdata/eval/eval.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 // ----------------------------------------------------------------------------
 // data structures for storing the parsed expression in memory
@@ -1057,33 +1059,33 @@ static inline EVAL_NODE *parse_full_expression(const char **string, int *error)
 // ----------------------------------------------------------------------------
 // public API
 
-int expression_evaluate(EVAL_EXPRESSION *exp) {
-    exp->error = EVAL_ERROR_OK;
+int expression_evaluate(EVAL_EXPRESSION *expression) {
+    expression->error = EVAL_ERROR_OK;
 
-    buffer_reset(exp->error_msg);
-    exp->result = eval_node(exp, (EVAL_NODE *)exp->nodes, &exp->error);
+    buffer_reset(expression->error_msg);
+    expression->result = eval_node(expression, (EVAL_NODE *)expression->nodes, &expression->error);
 
-    if(unlikely(isnan(exp->result))) {
-        if(exp->error == EVAL_ERROR_OK)
-            exp->error = EVAL_ERROR_VALUE_IS_NAN;
+    if(unlikely(isnan(expression->result))) {
+        if(expression->error == EVAL_ERROR_OK)
+            expression->error = EVAL_ERROR_VALUE_IS_NAN;
     }
-    else if(unlikely(isinf(exp->result))) {
-        if(exp->error == EVAL_ERROR_OK)
-            exp->error = EVAL_ERROR_VALUE_IS_INFINITE;
+    else if(unlikely(isinf(expression->result))) {
+        if(expression->error == EVAL_ERROR_OK)
+            expression->error = EVAL_ERROR_VALUE_IS_INFINITE;
     }
-    else if(unlikely(exp->error == EVAL_ERROR_UNKNOWN_VARIABLE)) {
+    else if(unlikely(expression->error == EVAL_ERROR_UNKNOWN_VARIABLE)) {
         // although there is an unknown variable
         // the expression was evaluated successfully
-        exp->error = EVAL_ERROR_OK;
+        expression->error = EVAL_ERROR_OK;
     }
 
-    if(exp->error != EVAL_ERROR_OK) {
-        exp->result = NAN;
+    if(expression->error != EVAL_ERROR_OK) {
+        expression->result = NAN;
 
-        if(buffer_strlen(exp->error_msg))
-            buffer_strcat(exp->error_msg, "; ");
+        if(buffer_strlen(expression->error_msg))
+            buffer_strcat(expression->error_msg, "; ");
 
-        buffer_sprintf(exp->error_msg, "failed to evaluate expression with error %d (%s)", exp->error, expression_strerror(exp->error));
+        buffer_sprintf(expression->error_msg, "failed to evaluate expression with error %d (%s)", expression->error, expression_strerror(expression->error));
         return 0;
     }
 
@@ -1134,14 +1136,14 @@ EVAL_EXPRESSION *expression_parse(const char *string, const char **failed_at, in
     return exp;
 }
 
-void expression_free(EVAL_EXPRESSION *exp) {
-    if(!exp) return;
+void expression_free(EVAL_EXPRESSION *expression) {
+    if(!expression) return;
 
-    if(exp->nodes) eval_node_free((EVAL_NODE *)exp->nodes);
-    freez((void *)exp->source);
-    freez((void *)exp->parsed_as);
-    buffer_free(exp->error_msg);
-    freez(exp);
+    if(expression->nodes) eval_node_free((EVAL_NODE *)expression->nodes);
+    freez((void *)expression->source);
+    freez((void *)expression->parsed_as);
+    buffer_free(expression->error_msg);
+    freez(expression);
 }
 
 const char *expression_strerror(int error) {
diff --git a/src/eval.h b/libnetdata/eval/eval.h
index 6a5562fd4..57dae9d0b 100644
--- a/src/eval.h
+++ b/libnetdata/eval/eval.h
@@ -1,8 +1,22 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_EVAL_H
-#define NETDATA_EVAL_H
+#define NETDATA_EVAL_H 1
+
+#include "../libnetdata.h"
 
 #define EVAL_MAX_VARIABLE_NAME_LENGTH 300
 
+typedef enum rrdcalc_status {
+    RRDCALC_STATUS_REMOVED       = -2,
+    RRDCALC_STATUS_UNDEFINED     = -1,
+    RRDCALC_STATUS_UNINITIALIZED =  0,
+    RRDCALC_STATUS_CLEAR         =  1,
+    RRDCALC_STATUS_RAISED        =  2,
+    RRDCALC_STATUS_WARNING       =  3,
+    RRDCALC_STATUS_CRITICAL      =  4
+} RRDCALC_STATUS;
+
 typedef struct eval_variable {
     char *name;
     uint32_t hash;
@@ -59,7 +73,7 @@ typedef struct eval_expression {
 extern EVAL_EXPRESSION *expression_parse(const char *string, const char **failed_at, int *error);
 
 // free all resources allocated for an expression
-extern void expression_free(EVAL_EXPRESSION *op);
+extern void expression_free(EVAL_EXPRESSION *expression);
 
 // convert an error code to a message
 extern const char *expression_strerror(int error);
@@ -69,4 +83,6 @@ extern const char *expression_strerror(int error);
 // 2 = FAILED, the error message is in: buffer_tostring(expression->error_msg)
 extern int expression_evaluate(EVAL_EXPRESSION *expression);
 
+extern int health_variable_lookup(const char *variable, uint32_t hash, struct rrdcalc *rc, calculated_number *result);
+
 #endif //NETDATA_EVAL_H
diff --git a/src/inlined.h b/libnetdata/inlined.h
index 9ab2dca73..6a5994c12 100644
--- a/src/inlined.h
+++ b/libnetdata/inlined.h
@@ -1,7 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_INLINED_H
-#define NETDATA_INLINED_H
+#define NETDATA_INLINED_H 1
 
-#include "common.h"
+#include "libnetdata.h"
 
 #ifdef KERNEL_32BIT
 typedef uint32_t kernel_uint_t;
@@ -245,12 +247,17 @@ static inline char *strncpyz(char *dst, const char *src, size_t n) {
 }
 
 static inline int read_file(const char *filename, char *buffer, size_t size) {
+    if(unlikely(!size)) return 3;
+
     int fd = open(filename, O_RDONLY, 0666);
-    if(unlikely(fd == -1))
+    if(unlikely(fd == -1)) {
+        buffer[0] = '\0';
         return 1;
+    }
 
     ssize_t r = read(fd, buffer, size);
     if(unlikely(r == -1)) {
+        buffer[0] = '\0';
         close(fd);
         return 2;
     }
diff --git a/src/common.c b/libnetdata/libnetdata.c
index 94fd5e429..de330cae8 100644
--- a/src/common.c
+++ b/libnetdata/libnetdata.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "libnetdata.h"
 
 #ifdef __APPLE__
 #define INHERIT_NONE 0
@@ -8,17 +10,6 @@
 #    define MADV_DONTFORK INHERIT_NONE
 #endif /* __FreeBSD__ || __APPLE__*/
 
-char *netdata_configured_hostname    = NULL;
-char *netdata_configured_config_dir  = NULL;
-char *netdata_configured_log_dir     = NULL;
-char *netdata_configured_plugins_dir = NULL;
-char *netdata_configured_web_dir     = NULL;
-char *netdata_configured_cache_dir   = NULL;
-char *netdata_configured_varlib_dir  = NULL;
-char *netdata_configured_home_dir    = NULL;
-char *netdata_configured_host_prefix = NULL;
-char *netdata_configured_timezone    = NULL;
-
 struct rlimit rlimit_nofile = { .rlim_cur = 1024, .rlim_max = 1024 };
 int enable_ksm = 1;
 
@@ -36,182 +27,172 @@ const char *program_version = VERSION;
 // routines.
 
 #ifdef NETDATA_LOG_ALLOCATIONS
-static struct memory_statistics {
-    volatile size_t malloc_calls_made;
-    volatile size_t calloc_calls_made;
-    volatile size_t realloc_calls_made;
-    volatile size_t strdup_calls_made;
-    volatile size_t free_calls_made;
-    volatile size_t memory_calls_made;
-    volatile size_t allocated_memory;
-    volatile size_t mmapped_memory;
-} memory_statistics;
-
-static inline void print_allocations(const char *file, const char *function, const unsigned long line) {
-    static struct memory_statistics old = { 0, 0, 0, 0, 0, 0, 0, 0 };
-
-    //if(unlikely(!(memory_statistics.memory_calls_made % 5))) {
-        fprintf(stderr, "(%04lu@%-10.10s:%-15.15s): Allocated %zu KB (+%zu B), mmapped %zu KB (+%zu B): malloc %zu (+%zu), calloc %zu (+%zu), realloc %zu (+%zu), strdup %zu (+%zu), free %zu (+%zu)\n",
-                line, file, function,
-                (memory_statistics.allocated_memory + 512) / 1024, memory_statistics.allocated_memory - old.allocated_memory,
-                (memory_statistics.mmapped_memory + 512) / 1024, memory_statistics.mmapped_memory - old.mmapped_memory,
-                memory_statistics.malloc_calls_made, memory_statistics.malloc_calls_made - old.malloc_calls_made,
-                memory_statistics.calloc_calls_made, memory_statistics.calloc_calls_made - old.calloc_calls_made,
-                memory_statistics.realloc_calls_made, memory_statistics.realloc_calls_made - old.realloc_calls_made,
-                memory_statistics.strdup_calls_made, memory_statistics.strdup_calls_made - old.strdup_calls_made,
-                memory_statistics.free_calls_made, memory_statistics.free_calls_made - old.free_calls_made
-        );
-
-        memcpy(&old, &memory_statistics, sizeof(struct memory_statistics));
-    //}
+static __thread struct memory_statistics {
+    volatile ssize_t malloc_calls_made;
+    volatile ssize_t calloc_calls_made;
+    volatile ssize_t realloc_calls_made;
+    volatile ssize_t strdup_calls_made;
+    volatile ssize_t free_calls_made;
+    volatile ssize_t memory_calls_made;
+    volatile ssize_t allocated_memory;
+    volatile ssize_t mmapped_memory;
+} memory_statistics = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+__thread size_t log_thread_memory_allocations = 0;
+
+static inline void print_allocations(const char *file, const char *function, const unsigned long line, const char *type, size_t size) {
+    static __thread struct memory_statistics old = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+    fprintf(stderr, "%s iteration %zu MEMORY TRACE: %lu@%s : %s : %s : %zu\n",
+            netdata_thread_tag(),
+            log_thread_memory_allocations,
+            line, file, function,
+            type, size
+    );
+
+    fprintf(stderr, "%s iteration %zu MEMORY ALLOCATIONS: (%04lu@%-40.40s:%-40.40s): Allocated %zd KB (%+zd B), mmapped %zd KB (%+zd B): %s : malloc %zd (%+zd), calloc %zd (%+zd), realloc %zd (%+zd), strdup %zd (%+zd), free %zd (%+zd)\n",
+            netdata_thread_tag(),
+            log_thread_memory_allocations,
+            line, file, function,
+            (memory_statistics.allocated_memory + 512) / 1024, memory_statistics.allocated_memory - old.allocated_memory,
+            (memory_statistics.mmapped_memory + 512) / 1024, memory_statistics.mmapped_memory - old.mmapped_memory,
+            type,
+            memory_statistics.malloc_calls_made, memory_statistics.malloc_calls_made - old.malloc_calls_made,
+            memory_statistics.calloc_calls_made, memory_statistics.calloc_calls_made - old.calloc_calls_made,
+            memory_statistics.realloc_calls_made, memory_statistics.realloc_calls_made - old.realloc_calls_made,
+            memory_statistics.strdup_calls_made, memory_statistics.strdup_calls_made - old.strdup_calls_made,
+            memory_statistics.free_calls_made, memory_statistics.free_calls_made - old.free_calls_made
+    );
+
+    memcpy(&old, &memory_statistics, sizeof(struct memory_statistics));
 }
 
-static inline void malloc_accounting(const char *file, const char *function, const unsigned long line, size_t size) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
-    __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
-    __atomic_fetch_add(&memory_statistics.malloc_calls_made, 1, __ATOMIC_SEQ_CST);
-    __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
-    // this is for debugging - we don't care locking it
-    memory_statistics.memory_calls_made++;
-    memory_statistics.malloc_calls_made++;
-    memory_statistics.allocated_memory += size;
-#endif
-    print_allocations(file, function, line);
+static inline void mmap_accounting(size_t size) {
+    if(log_thread_memory_allocations) {
+        memory_statistics.memory_calls_made++;
+        memory_statistics.mmapped_memory += size;
+    }
 }
 
-static inline void mmap_accounting(size_t size) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
-    __atomic_fetch_add(&memory_statistics.malloc_calls_made, 1, __ATOMIC_SEQ_CST);
-    __atomic_fetch_add(&memory_statistics.mmapped_memory, size, __ATOMIC_SEQ_CST);
-#else
-    // this is for debugging - we don't care locking it
-    memory_statistics.memory_calls_made++;
-    memory_statistics.mmapped_memory += size;
-#endif
+void *mallocz_int(const char *file, const char *function, const unsigned long line, size_t size) {
+    if(log_thread_memory_allocations) {
+        memory_statistics.memory_calls_made++;
+        memory_statistics.malloc_calls_made++;
+        memory_statistics.allocated_memory += size;
+        print_allocations(file, function, line, "malloc()", size);
+    }
+
+    size_t *n = (size_t *)malloc(sizeof(size_t) + size);
+    if (unlikely(!n)) fatal("mallocz() cannot allocate %zu bytes of memory.", size);
+    *n = size;
+    return (void *)&n[1];
 }
 
-static inline void calloc_accounting(const char *file, const char *function, const unsigned long line, size_t size) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
-    __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
-    __atomic_fetch_add(&memory_statistics.calloc_calls_made, 1, __ATOMIC_SEQ_CST);
-    __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
-    // this is for debugging - we don't care locking it
-    memory_statistics.memory_calls_made++;
-    memory_statistics.calloc_calls_made++;
-    memory_statistics.allocated_memory += size;
-#endif
-    print_allocations(file, function, line);
+void *callocz_int(const char *file, const char *function, const unsigned long line, size_t nmemb, size_t size) {
+    size = nmemb * size;
+
+    if(log_thread_memory_allocations) {
+        memory_statistics.memory_calls_made++;
+        memory_statistics.calloc_calls_made++;
+        memory_statistics.allocated_memory += size;
+        print_allocations(file, function, line, "calloc()", size);
+    }
+
+    size_t *n = (size_t *)calloc(1, sizeof(size_t) + size);
+    if (unlikely(!n)) fatal("callocz() cannot allocate %zu bytes of memory.", size);
+    *n = size;
+    return (void *)&n[1];
 }
 
-static inline void realloc_accounting(const char *file, const char *function, const unsigned long line, void *ptr, size_t size) {
-    (void)ptr;
+void *reallocz_int(const char *file, const char *function, const unsigned long line, void *ptr, size_t size) {
+    if(!ptr) return mallocz_int(file, function, line, size);
 
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
-    __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
-    __atomic_fetch_add(&memory_statistics.realloc_calls_made, 1, __ATOMIC_SEQ_CST);
-    __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
-    // this is for debugging - we don't care locking it
-    memory_statistics.memory_calls_made++;
-    memory_statistics.realloc_calls_made++;
-    memory_statistics.allocated_memory += size;
-#endif
-    print_allocations(file, function, line);
+    size_t *n = (size_t *)ptr;
+    n--;
+    size_t old_size = *n;
+
+    n = realloc(n, sizeof(size_t) + size);
+    if (unlikely(!n)) fatal("reallocz() cannot allocate %zu bytes of memory (from %zu bytes).", size, old_size);
+
+    if(log_thread_memory_allocations) {
+        memory_statistics.memory_calls_made++;
+        memory_statistics.realloc_calls_made++;
+        memory_statistics.allocated_memory += (size - old_size);
+        print_allocations(file, function, line, "realloc()", size - old_size);
+    }
+
+    *n = size;
+    return (void *)&n[1];
 }
 
-static inline void strdup_accounting(const char *file, const char *function, const unsigned long line, const char *s) {
+char *strdupz_int(const char *file, const char *function, const unsigned long line, const char *s) {
     size_t size = strlen(s) + 1;
 
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
-    __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
-    __atomic_fetch_add(&memory_statistics.strdup_calls_made, 1, __ATOMIC_SEQ_CST);
-    __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
-    // this is for debugging - we don't care locking it
-    memory_statistics.memory_calls_made++;
-    memory_statistics.strdup_calls_made++;
-    memory_statistics.allocated_memory += size;
-#endif
-    print_allocations(file, function, line);
+    if(log_thread_memory_allocations) {
+        memory_statistics.memory_calls_made++;
+        memory_statistics.strdup_calls_made++;
+        memory_statistics.allocated_memory += size;
+        print_allocations(file, function, line, "strdup()", size);
+    }
+
+    size_t *n = (size_t *)malloc(sizeof(size_t) + size);
+    if (unlikely(!n)) fatal("strdupz() cannot allocate %zu bytes of memory.", size);
+
+    *n = size;
+    char *t = (char *)&n[1];
+    strcpy(t, s);
+    return t;
 }
 
-static inline void free_accounting(const char *file, const char *function, const unsigned long line, void *ptr) {
-    (void)file;
-    (void)function;
-    (void)line;
+void freez_int(const char *file, const char *function, const unsigned long line, void *ptr) {
+    if(unlikely(!ptr)) return;
 
-    if(likely(ptr)) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
-        __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
-        __atomic_fetch_add(&memory_statistics.free_calls_made, 1, __ATOMIC_SEQ_CST);
-#else
-        // this is for debugging - we don't care locking it
+    size_t *n = (size_t *)ptr;
+    n--;
+    size_t size = *n;
+
+    if(log_thread_memory_allocations) {
         memory_statistics.memory_calls_made++;
         memory_statistics.free_calls_made++;
-#endif
+        memory_statistics.allocated_memory -= size;
+        print_allocations(file, function, line, "free()", size);
     }
-}
-#endif
 
-#ifdef NETDATA_LOG_ALLOCATIONS
-char *strdupz_int(const char *file, const char *function, const unsigned long line, const char *s) {
-    strdup_accounting(file, function, line, s);
+    free(n);
+}
 #else
-char *strdupz(const char *s) {
-#endif
 
+char *strdupz(const char *s) {
     char *t = strdup(s);
     if (unlikely(!t)) fatal("Cannot strdup() string '%s'", s);
     return t;
 }
 
-#ifdef NETDATA_LOG_ALLOCATIONS
-void *mallocz_int(const char *file, const char *function, const unsigned long line, size_t size) {
-    malloc_accounting(file, function, line, size);
-#else
-void *mallocz(size_t size) {
-#endif
+void freez(void *ptr) {
+    free(ptr);
+}
 
+void *mallocz(size_t size) {
     void *p = malloc(size);
     if (unlikely(!p)) fatal("Cannot allocate %zu bytes of memory.", size);
     return p;
 }
 
-#ifdef NETDATA_LOG_ALLOCATIONS
-void *callocz_int(const char *file, const char *function, const unsigned long line, size_t nmemb, size_t size) {
-    calloc_accounting(file, function, line, nmemb * size);
-#else
 void *callocz(size_t nmemb, size_t size) {
-#endif
-
     void *p = calloc(nmemb, size);
     if (unlikely(!p)) fatal("Cannot allocate %zu bytes of memory.", nmemb * size);
     return p;
 }
 
-#ifdef NETDATA_LOG_ALLOCATIONS
-void *reallocz_int(const char *file, const char *function, const unsigned long line, void *ptr, size_t size) {
-    realloc_accounting(file, function, line, ptr, size);
-#else
 void *reallocz(void *ptr, size_t size) {
-#endif
-
     void *p = realloc(ptr, size);
     if (unlikely(!p)) fatal("Cannot re-allocate memory to %zu bytes.", size);
     return p;
 }
 
-#ifdef NETDATA_LOG_ALLOCATIONS
-void freez_int(const char *file, const char *function, const unsigned long line, void *ptr) {
-    free_accounting(file, function, line, ptr);
-#else
-void freez(void *ptr) {
 #endif
 
-    free(ptr);
-}
+// --------------------------------------------------------------------------------------------------------------------
 
 void json_escape_string(char *dst, const char *src, size_t size) {
     const char *t;
@@ -244,52 +225,6 @@ void json_fix_string(char *s) {
     }
 }
 
-int sleep_usec(usec_t usec) {
-
-#ifndef NETDATA_WITH_USLEEP
-    // we expect microseconds (1.000.000 per second)
-    // but timespec is nanoseconds (1.000.000.000 per second)
-    struct timespec rem, req = {
-            .tv_sec = (time_t) (usec / 1000000),
-            .tv_nsec = (suseconds_t) ((usec % 1000000) * 1000)
-    };
-
-    while (nanosleep(&req, &rem) == -1) {
-        if (likely(errno == EINTR)) {
-            debug(D_SYSTEM, "nanosleep() interrupted (while sleeping for %llu microseconds).", usec);
-            req.tv_sec = rem.tv_sec;
-            req.tv_nsec = rem.tv_nsec;
-        } else {
-            error("Cannot nanosleep() for %llu microseconds.", usec);
-            break;
-        }
-    }
-
-    return 0;
-#else
-    int ret = usleep(usec);
-    if(unlikely(ret == -1 && errno == EINVAL)) {
-        // on certain systems, usec has to be up to 999999
-        if(usec > 999999) {
-            int counter = usec / 999999;
-            while(counter--)
-                usleep(999999);
-
-            usleep(usec % 999999);
-        }
-        else {
-            error("Cannot usleep() for %llu microseconds.", usec);
-            return ret;
-        }
-    }
-
-    if(ret != 0)
-        error("usleep() failed for %llu microseconds.", usec);
-
-    return ret;
-#endif
-}
-
 unsigned char netdata_map_chart_names[256] = {
         [0] = '\0', //
         [1] = '_', //
@@ -1183,124 +1118,6 @@ int snprintfz(char *dst, size_t n, const char *fmt, ...) {
     return ret;
 }
 
-// ----------------------------------------------------------------------------
-// system functions
-// to retrieve settings of the system
-
-int processors = 1;
-long get_system_cpus(void) {
-    processors = 1;
-
-    #ifdef __APPLE__
-        int32_t tmp_processors;
-
-        if (unlikely(GETSYSCTL_BY_NAME("hw.logicalcpu", tmp_processors))) {
-            error("Assuming system has %d processors.", processors);
-        } else {
-            processors = tmp_processors;
-        }
-
-        return processors;
-    #elif __FreeBSD__
-        int32_t tmp_processors;
-
-        if (unlikely(GETSYSCTL_BY_NAME("hw.ncpu", tmp_processors))) {
-            error("Assuming system has %d processors.", processors);
-        } else {
-            processors = tmp_processors;
-        }
-
-        return processors;
-    #else
-
-    char filename[FILENAME_MAX + 1];
-    snprintfz(filename, FILENAME_MAX, "%s/proc/stat", netdata_configured_host_prefix);
-
-    procfile *ff = procfile_open(filename, NULL, PROCFILE_FLAG_DEFAULT);
-    if(!ff) {
-        error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
-        return processors;
-    }
-
-    ff = procfile_readall(ff);
-    if(!ff) {
-        error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
-        return processors;
-    }
-
-    processors = 0;
-    unsigned int i;
-    for(i = 0; i < procfile_lines(ff); i++) {
-        if(!procfile_linewords(ff, i)) continue;
-
-        if(strncmp(procfile_lineword(ff, i, 0), "cpu", 3) == 0) processors++;
-    }
-    processors--;
-    if(processors < 1) processors = 1;
-
-    procfile_close(ff);
-
-    debug(D_SYSTEM, "System has %d processors.", processors);
-    return processors;
-
-    #endif /* __APPLE__, __FreeBSD__ */
-}
-
-pid_t pid_max = 32768;
-pid_t get_system_pid_max(void) {
-    #ifdef __APPLE__
-        // As we currently do not know a solution to query pid_max from the os
-        // we use the number defined in bsd/sys/proc_internal.h in XNU sources
-        pid_max = 99999;
-        return pid_max;
-    #elif __FreeBSD__
-        int32_t tmp_pid_max;
-
-        if (unlikely(GETSYSCTL_BY_NAME("kern.pid_max", tmp_pid_max))) {
-            pid_max = 99999;
-            error("Assuming system's maximum pid is %d.", pid_max);
-        } else {
-            pid_max = tmp_pid_max;
-        }
-
-        return pid_max;
-    #else
-
-    static char read = 0;
-    if(unlikely(read)) return pid_max;
-    read = 1;
-
-    char filename[FILENAME_MAX + 1];
-    snprintfz(filename, FILENAME_MAX, "%s/proc/sys/kernel/pid_max", netdata_configured_host_prefix);
-
-    unsigned long long max = 0;
-    if(read_single_number_file(filename, &max) != 0) {
-        error("Cannot open file '%s'. Assuming system supports %d pids.", filename, pid_max);
-        return pid_max;
-    }
-
-    if(!max) {
-        error("Cannot parse file '%s'. Assuming system supports %d pids.", filename, pid_max);
-        return pid_max;
-    }
-
-    pid_max = (pid_t) max;
-    return pid_max;
-
-    #endif /* __APPLE__, __FreeBSD__ */
-}
-
-unsigned int hz;
-void get_system_HZ(void) {
-    long ticks;
-
-    if ((ticks = sysconf(_SC_CLK_TCK)) == -1) {
-        error("Cannot get system clock ticks");
-    }
-
-    hz = (unsigned int) ticks;
-}
-
 /*
 // poor man cycle counting
 static unsigned long tsc;
@@ -1359,3 +1176,272 @@ int recursively_delete_dir(const char *path, const char *reason) {
 
     return ret;
 }
+
+static int is_virtual_filesystem(const char *path, char **reason) {
+
+#if defined(__APPLE__) || defined(__FreeBSD__)
+    (void)path;
+    (void)reason;
+#else
+    struct statfs stat;
+    // stat.f_fsid.__val[0] is a file system id
+    // stat.f_fsid.__val[1] is the inode
+    // so their combination uniquely identifies the file/dir
+
+    if (statfs(path, &stat) == -1) {
+        if(reason) *reason = "failed to statfs()";
+        return -1;
+    }
+
+    if(stat.f_fsid.__val[0] != 0 || stat.f_fsid.__val[1] != 0) {
+        errno = EINVAL;
+        if(reason) *reason = "is not a virtual file system";
+        return -1;
+    }
+#endif
+
+    return 0;
+}
+
+int verify_netdata_host_prefix() {
+    if(!netdata_configured_host_prefix)
+        netdata_configured_host_prefix = "";
+
+    if(!*netdata_configured_host_prefix)
+        return 0;
+
+    char buffer[FILENAME_MAX + 1];
+    char *path = netdata_configured_host_prefix;
+    char *reason = "unknown reason";
+    errno = 0;
+
+    struct stat sb;
+    if (stat(path, &sb) == -1) {
+        reason = "failed to stat()";
+        goto failed;
+    }
+
+    if((sb.st_mode & S_IFMT) != S_IFDIR) {
+        errno = EINVAL;
+        reason = "is not a directory";
+        goto failed;
+    }
+
+    path = buffer;
+    snprintfz(path, FILENAME_MAX, "%s/proc", netdata_configured_host_prefix);
+    if(is_virtual_filesystem(path, &reason) == -1)
+        goto failed;
+
+    snprintfz(path, FILENAME_MAX, "%s/sys", netdata_configured_host_prefix);
+    if(is_virtual_filesystem(path, &reason) == -1)
+        goto failed;
+
+    if(netdata_configured_host_prefix && *netdata_configured_host_prefix)
+        info("Using host prefix directory '%s'", netdata_configured_host_prefix);
+
+    return 0;
+
+failed:
+    error("Ignoring host prefix '%s': path '%s' %s", netdata_configured_host_prefix, path, reason);
+    netdata_configured_host_prefix = "";
+    return -1;
+}
+
+char *strdupz_path_subpath(const char *path, const char *subpath) {
+    if(unlikely(!path || !*path)) path = ".";
+    if(unlikely(!subpath)) subpath = "";
+
+    // skip trailing slashes in path
+    size_t len = strlen(path);
+    while(len > 0 && path[len - 1] == '/') len--;
+
+    // skip leading slashes in subpath
+    while(subpath[0] == '/') subpath++;
+
+    // if the last character in path is / and (there is a subpath or path is now empty)
+    // keep the trailing slash in path and remove the additional slash
+    char *slash = "/";
+    if(path[len] == '/' && (*subpath || len == 0)) {
+        slash = "";
+        len++;
+    }
+    else if(!*subpath) {
+        // there is no subpath
+        // no need for trailing slash
+        slash = "";
+    }
+
+    char buffer[FILENAME_MAX + 1];
+    snprintfz(buffer, FILENAME_MAX, "%.*s%s%s", (int)len, path, slash, subpath);
+    return strdupz(buffer);
+}
+
+int path_is_dir(const char *path, const char *subpath) {
+    char *s = strdupz_path_subpath(path, subpath);
+
+    size_t max_links = 100;
+
+    int is_dir = 0;
+    struct stat statbuf;
+    while(max_links-- && stat(s, &statbuf) == 0) {
+        if((statbuf.st_mode & S_IFMT) == S_IFDIR) {
+            is_dir = 1;
+            break;
+        }
+        else if((statbuf.st_mode & S_IFMT) == S_IFLNK) {
+            char buffer[FILENAME_MAX + 1];
+            ssize_t l = readlink(s, buffer, FILENAME_MAX);
+            if(l > 0) {
+                buffer[l] = '\0';
+                freez(s);
+                s = strdupz(buffer);
+                continue;
+            }
+            else {
+                is_dir = 0;
+                break;
+            }
+        }
+        else {
+            is_dir = 0;
+            break;
+        }
+    }
+
+    freez(s);
+    return is_dir;
+}
+
+int path_is_file(const char *path, const char *subpath) {
+    char *s = strdupz_path_subpath(path, subpath);
+
+    size_t max_links = 100;
+
+    int is_file = 0;
+    struct stat statbuf;
+    while(max_links-- && stat(s, &statbuf) == 0) {
+        if((statbuf.st_mode & S_IFMT) == S_IFREG) {
+            is_file = 1;
+            break;
+        }
+        else if((statbuf.st_mode & S_IFMT) == S_IFLNK) {
+            char buffer[FILENAME_MAX + 1];
+            ssize_t l = readlink(s, buffer, FILENAME_MAX);
+            if(l > 0) {
+                buffer[l] = '\0';
+                freez(s);
+                s = strdupz(buffer);
+                continue;
+            }
+            else {
+                is_file = 0;
+                break;
+            }
+        }
+        else {
+            is_file = 0;
+            break;
+        }
+    }
+
+    freez(s);
+    return is_file;
+}
+
+void recursive_config_double_dir_load(const char *user_path, const char *stock_path, const char *subpath, int (*callback)(const char *filename, void *data), void *data, size_t depth) {
+    if(depth > 3) {
+        error("CONFIG: Max directory depth reached while reading user path '%s', stock path '%s', subpath '%s'", user_path, stock_path, subpath);
+        return;
+    }
+
+    char *udir = strdupz_path_subpath(user_path, subpath);
+    char *sdir = strdupz_path_subpath(stock_path, subpath);
+
+    debug(D_HEALTH, "CONFIG traversing user-config directory '%s', stock config directory '%s'", udir, sdir);
+
+    DIR *dir = opendir(udir);
+    if (!dir) {
+        error("CONFIG cannot open user-config directory '%s'.", udir);
+    }
+    else {
+        struct dirent *de = NULL;
+        while((de = readdir(dir))) {
+            if(de->d_type == DT_DIR || de->d_type == DT_LNK) {
+                if( !de->d_name[0] ||
+                    (de->d_name[0] == '.' && de->d_name[1] == '\0') ||
+                    (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
+                        ) {
+                    debug(D_HEALTH, "CONFIG ignoring user-config directory '%s/%s'", udir, de->d_name);
+                    continue;
+                }
+
+                if(path_is_dir(udir, de->d_name)) {
+                    recursive_config_double_dir_load(udir, sdir, de->d_name, callback, data, depth + 1);
+                    continue;
+                }
+            }
+
+            if(de->d_type == DT_REG || de->d_type == DT_LNK) {
+                size_t len = strlen(de->d_name);
+                if(path_is_file(udir, de->d_name) &&
+                   len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) {
+                    char *filename = strdupz_path_subpath(udir, de->d_name);
+                    callback(filename, data);
+                    freez(filename);
+                }
+                else
+                    debug(D_HEALTH, "CONFIG ignoring user-config file '%s/%s'", udir, de->d_name);
+            }
+        }
+
+        closedir(dir);
+    }
+
+    debug(D_HEALTH, "CONFIG traversing stock config directory '%s', user config directory '%s'", sdir, udir);
+
+    dir = opendir(sdir);
+    if (!dir) {
+        error("CONFIG cannot open stock config directory '%s'.", sdir);
+    }
+    else {
+        struct dirent *de = NULL;
+        while((de = readdir(dir))) {
+            if(de->d_type == DT_DIR || de->d_type == DT_LNK) {
+                if( !de->d_name[0] ||
+                    (de->d_name[0] == '.' && de->d_name[1] == '\0') ||
+                    (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
+                        ) {
+                    debug(D_HEALTH, "CONFIG ignoring stock config directory '%s/%s'", sdir, de->d_name);
+                    continue;
+                }
+
+                if(path_is_dir(sdir, de->d_name)) {
+                    // we recurse in stock subdirectory, only when there is no corresponding
+                    // user subdirectory - to avoid reading the files twice
+
+                    if(!path_is_dir(udir, de->d_name))
+                        recursive_config_double_dir_load(udir, sdir, de->d_name, callback, data, depth + 1);
+
+                    continue;
+                }
+            }
+
+            if(de->d_type == DT_REG || de->d_type == DT_LNK) {
+                size_t len = strlen(de->d_name);
+                if(path_is_file(sdir, de->d_name) && !path_is_file(udir, de->d_name) &&
+                   len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) {
+                    char *filename = strdupz_path_subpath(sdir, de->d_name);
+                    callback(filename, data);
+                    freez(filename);
+                }
+                else
+                    debug(D_HEALTH, "CONFIG ignoring stock config file '%s/%s'", sdir, de->d_name);
+            }
+        }
+
+        closedir(dir);
+    }
+
+    freez(udir);
+    freez(sdir);
+}
diff --git a/src/common.h b/libnetdata/libnetdata.h
index 15fc50a6a..0bac3dc8f 100644
--- a/src/common.h
+++ b/libnetdata/libnetdata.h
@@ -1,10 +1,16 @@
-#ifndef NETDATA_COMMON_H
-#define NETDATA_COMMON_H 1
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_LIB_H
+#define NETDATA_LIB_H 1
 
 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif
 
+#define OS_LINUX   1
+#define OS_FREEBSD 2
+#define OS_MACOS   3
+
 
 // ----------------------------------------------------------------------------
 // system include files for all netdata C programs
@@ -14,9 +20,9 @@
 
 #if defined(HAVE_JEMALLOC_JEMALLOC_H)
 #include <jemalloc/jemalloc.h>
-#else
+#else // !defined(HAVE_JEMALLOC_JEMALLOC_H)
 #include <malloc.h>
-#endif
+#endif // !defined(HAVE_JEMALLOC_JEMALLOC_H)
 
 #elif defined(ENABLE_TCMALLOC)
 
@@ -28,7 +34,18 @@
 #include <malloc.h>
 #endif /* __FreeBSD__ || __APPLE__ */
 
-#endif
+#endif /* !defined(ENABLE_JEMALLOC) && !defined(ENABLE_TCMALLOC) */
+
+// ----------------------------------------------------------------------------
+
+#if defined(__FreeBSD__)
+#include <pthread_np.h>
+#define NETDATA_OS_TYPE "freebsd"
+#elif defined(__APPLE__)
+#define NETDATA_OS_TYPE "macos"
+#else
+#define NETDATA_OS_TYPE "linux"
+#endif /* __FreeBSD__, __APPLE__*/
 
 #include <pthread.h>
 #include <errno.h>
@@ -42,41 +59,20 @@
 #include <arpa/inet.h>
 #include <netinet/tcp.h>
 #include <sys/ioctl.h>
-
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-
-#ifdef HAVE_RESOLV_H
-#include <resolv.h>
-#endif
-
+#include <libgen.h>
 #include <dirent.h>
 #include <fcntl.h>
 #include <getopt.h>
 #include <grp.h>
 #include <pwd.h>
 #include <locale.h>
-
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-
 #include <net/if.h>
-
 #include <poll.h>
 #include <signal.h>
 #include <syslog.h>
 #include <sys/mman.h>
-
-#ifdef HAVE_SYS_PRCTL_H
-#include <sys/prctl.h>
-#endif
-
 #include <sys/resource.h>
 #include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/statvfs.h>
 #include <sys/syscall.h>
 #include <sys/time.h>
 #include <sys/types.h>
@@ -86,6 +82,42 @@
 #include <unistd.h>
 #include <uuid/uuid.h>
 
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#ifdef HAVE_RESOLV_H
+#include <resolv.h>
+#endif
+
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+
+#ifdef HAVE_SYS_PRCTL_H
+#include <sys/prctl.h>
+#endif
+
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+
+#ifdef HAVE_SYS_VFS_H
+#include <sys/vfs.h>
+#endif
+
+#ifdef HAVE_SYS_STATFS_H
+#include <sys/statfs.h>
+#endif
+
+#ifdef HAVE_SYS_MOUNT_H
+#include <sys/mount.h>
+#endif
+
+#ifdef HAVE_SYS_STATVFS_H
+#include <sys/statvfs.h>
+#endif
+
 // #1408
 #ifdef MAJOR_IN_MKDEV
 #include <sys/mkdev.h>
@@ -94,10 +126,6 @@
 #include <sys/sysmacros.h>
 #endif
 
-/*
-#include <mntent.h>
-*/
-
 #ifdef STORAGE_WITH_MATH
 #include <math.h>
 #include <float.h>
@@ -117,27 +145,6 @@
 #include <sys/capability.h>
 #endif
 
-// ----------------------------------------------------------------------------
-// netdata chart priorities
-
-// This is a work in progress - to scope is to collect here all chart priorities.
-// These should be based on the CONTEXT of the charts + the chart id when needed
-// - for each SECTION +1000 (or +X000 for big sections)
-// - for each FAMILY  +100
-// - for each CHART   +10
-
-// Memory Section - 1xxx
-#define NETDATA_CHART_PRIO_MEM_SYSTEM              1000
-#define NETDATA_CHART_PRIO_MEM_SYSTEM_AVAILABLE    1010
-#define NETDATA_CHART_PRIO_MEM_SYSTEM_COMMITTED    1020
-#define NETDATA_CHART_PRIO_MEM_SYSTEM_PGFAULTS     1030
-#define NETDATA_CHART_PRIO_MEM_KERNEL              1100
-#define NETDATA_CHART_PRIO_MEM_SLAB                1200
-#define NETDATA_CHART_PRIO_MEM_HUGEPAGES           1250
-#define NETDATA_CHART_PRIO_MEM_KSM                 1300
-#define NETDATA_CHART_PRIO_MEM_NUMA                1400
-#define NETDATA_CHART_PRIO_MEM_HW                  1500
-
 
 // ----------------------------------------------------------------------------
 // netdata common definitions
@@ -197,92 +204,6 @@
 
 #define GUID_LEN 36
 
-// ----------------------------------------------------------------------------
-// netdata include files
-
-#include "clocks.h"
-#include "log.h"
-#include "threads.h"
-#include "locks.h"
-#include "simple_pattern.h"
-#include "avl.h"
-#include "global_statistics.h"
-#include "storage_number.h"
-#include "web_buffer.h"
-#include "web_buffer_svg.h"
-#include "url.h"
-#include "popen.h"
-
-#include "procfile.h"
-#include "appconfig.h"
-#include "dictionary.h"
-#include "proc_self_mountinfo.h"
-#include "plugin_checks.h"
-#include "plugin_idlejitter.h"
-#include "plugin_nfacct.h"
-
-#if defined(__FreeBSD__)
-#include <pthread_np.h>
-#include "plugin_freebsd.h"
-#define NETDATA_OS_TYPE "freebsd"
-#elif defined(__APPLE__)
-#include "plugin_macos.h"
-#define NETDATA_OS_TYPE "macos"
-#else
-#include "plugin_proc.h"
-#include "plugin_proc_diskspace.h"
-#define NETDATA_OS_TYPE "linux"
-#endif /* __FreeBSD__, __APPLE__*/
-
-typedef enum rrdcalc_status {
-    RRDCALC_STATUS_REMOVED       = -2,
-    RRDCALC_STATUS_UNDEFINED     = -1,
-    RRDCALC_STATUS_UNINITIALIZED =  0,
-    RRDCALC_STATUS_CLEAR         =  1,
-    RRDCALC_STATUS_RAISED        =  2,
-    RRDCALC_STATUS_WARNING       =  3,
-    RRDCALC_STATUS_CRITICAL      =  4
-} RRDCALC_STATUS;
-
-#include "eval.h"
-#include "health.h"
-
-#include "statistical.h"
-#include "socket.h"
-#include "rrd.h"
-#include "plugin_tc.h"
-#include "plugins_d.h"
-#include "statsd.h"
-#include "rrd2json.h"
-#include "rrd2json_api_old.h"
-#include "web_client.h"
-#include "web_server.h"
-#include "registry.h"
-#include "signals.h"
-#include "daemon.h"
-#include "main.h"
-#include "unit_test.h"
-#include "ipc.h"
-#include "backends.h"
-#include "backend_prometheus.h"
-#include "inlined.h"
-#include "adaptive_resortable_list.h"
-#include "rrdpush.h"
-#include "web_api_v1.h"
-#include "web_api_old.h"
-
-extern char *netdata_configured_hostname;
-extern char *netdata_configured_config_dir;
-extern char *netdata_configured_log_dir;
-extern char *netdata_configured_plugins_dir_base;
-extern char *netdata_configured_plugins_dir;
-extern char *netdata_configured_web_dir;
-extern char *netdata_configured_cache_dir;
-extern char *netdata_configured_varlib_dir;
-extern char *netdata_configured_home_dir;
-extern char *netdata_configured_host_prefix;
-extern char *netdata_configured_timezone;
-
 extern void netdata_fix_chart_id(char *s);
 extern void netdata_fix_chart_name(char *s);
 
@@ -296,6 +217,7 @@ extern int  snprintfz(char *dst, size_t n, const char *fmt, ...) PRINTFLIKE(3, 4
 
 // memory allocation functions that handle failures
 #ifdef NETDATA_LOG_ALLOCATIONS
+extern __thread size_t log_thread_memory_allocations;
 #define strdupz(s) strdupz_int(__FILE__, __FUNCTION__, __LINE__, s)
 #define callocz(nmemb, size) callocz_int(__FILE__, __FUNCTION__, __LINE__, nmemb, size)
 #define mallocz(size) mallocz_int(__FILE__, __FUNCTION__, __LINE__, size)
@@ -307,13 +229,13 @@ extern void *callocz_int(const char *file, const char *function, const unsigned
 extern void *mallocz_int(const char *file, const char *function, const unsigned long line, size_t size);
 extern void *reallocz_int(const char *file, const char *function, const unsigned long line, void *ptr, size_t size);
 extern void freez_int(const char *file, const char *function, const unsigned long line, void *ptr);
-#else
+#else // NETDATA_LOG_ALLOCATIONS
 extern char *strdupz(const char *s) MALLOCLIKE NEVERNULL;
 extern void *callocz(size_t nmemb, size_t size) MALLOCLIKE NEVERNULL;
 extern void *mallocz(size_t size) MALLOCLIKE NEVERNULL;
 extern void *reallocz(void *ptr, size_t size) MALLOCLIKE NEVERNULL;
 extern void freez(void *ptr);
-#endif
+#endif // NETDATA_LOG_ALLOCATIONS
 
 extern void json_escape_string(char *dst, const char *src, size_t size);
 extern void json_fix_string(char *s);
@@ -327,19 +249,9 @@ extern struct rlimit rlimit_nofile;
 
 extern int enable_ksm;
 
-extern int sleep_usec(usec_t usec);
-
 extern char *fgets_trim_len(char *buf, size_t buf_size, FILE *fp, size_t *len);
 
-extern int processors;
-extern long get_system_cpus(void);
-
-extern pid_t pid_max;
-extern pid_t get_system_pid_max(void);
-
-/* Number of ticks per second */
-extern unsigned int hz;
-extern void get_system_HZ(void);
+extern int verify_netdata_host_prefix();
 
 extern int recursively_delete_dir(const char *path, const char *reason);
 
@@ -348,6 +260,18 @@ extern const char *os_type;
 
 extern const char *program_version;
 
+extern char *strdupz_path_subpath(const char *path, const char *subpath);
+extern int path_is_dir(const char *path, const char *subpath);
+extern int path_is_file(const char *path, const char *subpath);
+extern void recursive_config_double_dir_load(
+        const char *user_path
+        , const char *stock_path
+        , const char *subpath
+        , int (*callback)(const char *filename, void *data)
+        , void *data
+        , size_t depth
+);
+
 /* fix for alpine linux */
 #ifndef RUSAGE_THREAD
 #ifdef RUSAGE_CHILDREN
@@ -357,4 +281,28 @@ extern const char *program_version;
 
 #define BITS_IN_A_KILOBIT 1000
 
-#endif /* NETDATA_COMMON_H */
+
+extern void netdata_cleanup_and_exit(int ret) NORETURN;
+extern char *netdata_configured_host_prefix;
+
+#include "os.h"
+#include "storage_number/storage_number.h"
+#include "threads/threads.h"
+#include "buffer/buffer.h"
+#include "locks/locks.h"
+#include "avl/avl.h"
+#include "inlined.h"
+#include "clocks/clocks.h"
+#include "popen/popen.h"
+#include "simple_pattern/simple_pattern.h"
+#include "socket/socket.h"
+#include "config/appconfig.h"
+#include "log/log.h"
+#include "procfile/procfile.h"
+#include "dictionary/dictionary.h"
+#include "eval/eval.h"
+#include "statistical/statistical.h"
+#include "adaptive_resortable_list/adaptive_resortable_list.h"
+#include "url/url.h"
+
+#endif // NETDATA_LIB_H
diff --git a/libnetdata/locks/Makefile.am b/libnetdata/locks/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/locks/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/locks/Makefile.in b/libnetdata/locks/Makefile.in
new file mode 100644
index 000000000..38520f78e
--- /dev/null
+++ b/libnetdata/locks/Makefile.in
@@ -0,0 +1,464 @@
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+# @configure_input@
+
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+
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+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
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+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+
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+	      exit 1;; \
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+	$(am__cd) $(top_srcdir) && \
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+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
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+
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+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
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+install-strip:
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
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+distclean: distclean-am
+	-rm -f Makefile
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+dvi: dvi-am
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+
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+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/locks/README.md b/libnetdata/locks/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/locks/README.md
diff --git a/src/locks.c b/libnetdata/locks/locks.c
index c5b42c921..91e226902 100644
--- a/src/locks.c
+++ b/libnetdata/locks/locks.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 // ----------------------------------------------------------------------------
 // automatic thread cancelability management, based on locks
@@ -82,6 +84,7 @@ int __netdata_mutex_unlock(netdata_mutex_t *mutex) {
 
 int netdata_mutex_init_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
@@ -97,6 +100,7 @@ int netdata_mutex_init_debug( const char *file, const char *function, const unsi
 
 int netdata_mutex_lock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
@@ -112,6 +116,7 @@ int netdata_mutex_lock_debug( const char *file, const char *function, const unsi
 
 int netdata_mutex_trylock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
@@ -127,6 +132,7 @@ int netdata_mutex_trylock_debug( const char *file, const char *function, const u
 
 int netdata_mutex_unlock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
@@ -215,6 +221,7 @@ int __netdata_rwlock_trywrlock(netdata_rwlock_t *rwlock) {
 
 int netdata_rwlock_destroy_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
@@ -230,6 +237,7 @@ int netdata_rwlock_destroy_debug( const char *file, const char *function, const
 
 int netdata_rwlock_init_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
@@ -245,6 +253,7 @@ int netdata_rwlock_init_debug( const char *file, const char *function, const uns
 
 int netdata_rwlock_rdlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
@@ -260,6 +269,7 @@ int netdata_rwlock_rdlock_debug( const char *file, const char *function, const u
 
 int netdata_rwlock_wrlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
@@ -275,6 +285,7 @@ int netdata_rwlock_wrlock_debug( const char *file, const char *function, const u
 
 int netdata_rwlock_unlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
@@ -290,6 +301,7 @@ int netdata_rwlock_unlock_debug( const char *file, const char *function, const u
 
 int netdata_rwlock_tryrdlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
@@ -305,6 +317,7 @@ int netdata_rwlock_tryrdlock_debug( const char *file, const char *function, cons
 
 int netdata_rwlock_trywrlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock) {
     usec_t start = 0;
+    (void)start;
 
     if(unlikely(debug_flags & D_LOCKS)) {
         start = now_boottime_usec();
diff --git a/src/locks.h b/libnetdata/locks/locks.h
index 36962fef2..850dd7ebc 100644
--- a/src/locks.h
+++ b/libnetdata/locks/locks.h
@@ -1,5 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_LOCKS_H
-#define NETDATA_LOCKS_H
+#define NETDATA_LOCKS_H 1
+
+#include "../libnetdata.h"
 
 typedef pthread_mutex_t netdata_mutex_t;
 #define NETDATA_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
diff --git a/libnetdata/log/Makefile.am b/libnetdata/log/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/log/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/log/Makefile.in b/libnetdata/log/Makefile.in
new file mode 100644
index 000000000..abf812b67
--- /dev/null
+++ b/libnetdata/log/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+
+# SPDX-License-Identifier: GPL-3.0-or-later
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+
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+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
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+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu libnetdata/log/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu libnetdata/log/Makefile
+.PRECIOUS: Makefile
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/log/README.md b/libnetdata/log/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/log/README.md
diff --git a/src/log.c b/libnetdata/log/log.c
index edb4482a0..198e98bd9 100644
--- a/src/log.c
+++ b/libnetdata/log/log.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 int web_server_is_multithreaded = 1;
 
@@ -56,7 +58,7 @@ static inline void log_unlock() {
     netdata_mutex_unlock(&log_mutex);
 }
 
-int open_log_file(int fd, FILE **fp, const char *filename, int *enabled_syslog) {
+static FILE *open_log_file(int fd, FILE *fp, const char *filename, int *enabled_syslog, int is_stdaccess, int *fd_ptr) {
     int f, devnull = 0;
 
     if(!filename || !*filename || !strcmp(filename, "none") ||  !strcmp(filename, "/dev/null")) {
@@ -75,8 +77,10 @@ int open_log_file(int fd, FILE **fp, const char *filename, int *enabled_syslog)
     // don't do anything if the user is willing
     // to have the standard one
     if(!strcmp(filename, "system")) {
-        if(fd != -1 && fp != &stdaccess)
-            return fd;
+        if(fd != -1 && !is_stdaccess) {
+            if(fd_ptr) *fd_ptr = fd;
+            return fp;
+        }
 
         filename = "stderr";
     }
@@ -91,19 +95,20 @@ int open_log_file(int fd, FILE **fp, const char *filename, int *enabled_syslog)
         f = open(filename, O_WRONLY | O_APPEND | O_CREAT, 0664);
         if(f == -1) {
             error("Cannot open file '%s'. Leaving %d to its default.", filename, fd);
-            return fd;
+            if(fd_ptr) *fd_ptr = fd;
+            return fp;
         }
     }
 
-    if(devnull && fp == &stdaccess) {
-        fd = -1;
-        *fp = NULL;
-    }
-
     // if there is a level-2 file pointer
     // flush it before switching the level-1 fds
-    if(fp && *fp)
-        fflush(*fp);
+    if(fp)
+        fflush(fp);
+
+    if(devnull && is_stdaccess) {
+        fd = -1;
+        fp = NULL;
+    }
 
     if(fd != f && fd != -1) {
         // it automatically closes
@@ -111,57 +116,61 @@ int open_log_file(int fd, FILE **fp, const char *filename, int *enabled_syslog)
         if (t == -1) {
             error("Cannot dup2() new fd %d to old fd %d for '%s'", f, fd, filename);
             close(f);
-            return fd;
+            if(fd_ptr) *fd_ptr = fd;
+            return fp;
         }
         // info("dup2() new fd %d to old fd %d for '%s'", f, fd, filename);
         close(f);
     }
     else fd = f;
 
-    if(fp && !*fp) {
-        *fp = fdopen(fd, "a");
-        if (!*fp)
+    if(!fp) {
+        fp = fdopen(fd, "a");
+        if (!fp)
             error("Cannot fdopen() fd %d ('%s')", fd, filename);
         else {
-            if (setvbuf(*fp, NULL, _IOLBF, 0) != 0)
+            if (setvbuf(fp, NULL, _IOLBF, 0) != 0)
                 error("Cannot set line buffering on fd %d ('%s')", fd, filename);
         }
     }
 
-    return fd;
+    if(fd_ptr) *fd_ptr = fd;
+    return fp;
 }
 
 void reopen_all_log_files() {
     if(stdout_filename)
-        open_log_file(STDOUT_FILENO, (FILE **)&stdout, stdout_filename, &output_log_syslog);
+        open_log_file(STDOUT_FILENO, stdout, stdout_filename, &output_log_syslog, 0, NULL);
 
     if(stderr_filename)
-        open_log_file(STDERR_FILENO, (FILE **)&stderr, stderr_filename, &error_log_syslog);
+        open_log_file(STDERR_FILENO, stderr, stderr_filename, &error_log_syslog, 0, NULL);
 
     if(stdaccess_filename)
-        stdaccess_fd = open_log_file(stdaccess_fd, (FILE **)&stdaccess, stdaccess_filename, &access_log_syslog);
+         stdaccess = open_log_file(stdaccess_fd, stdaccess, stdaccess_filename, &access_log_syslog, 1, &stdaccess_fd);
 }
 
 void open_all_log_files() {
     // disable stdin
-    open_log_file(STDIN_FILENO, (FILE **)&stdin, "/dev/null", NULL);
+    open_log_file(STDIN_FILENO, stdin, "/dev/null", NULL, 0, NULL);
 
-    open_log_file(STDOUT_FILENO, (FILE **)&stdout, stdout_filename, &output_log_syslog);
-    open_log_file(STDERR_FILENO, (FILE **)&stderr, stderr_filename, &error_log_syslog);
-    stdaccess_fd = open_log_file(stdaccess_fd, (FILE **)&stdaccess, stdaccess_filename, &access_log_syslog);
+    open_log_file(STDOUT_FILENO, stdout, stdout_filename, &output_log_syslog, 0, NULL);
+    open_log_file(STDERR_FILENO, stderr, stderr_filename, &error_log_syslog, 0, NULL);
+    stdaccess = open_log_file(stdaccess_fd, stdaccess, stdaccess_filename, &access_log_syslog, 1, &stdaccess_fd);
 }
 
 // ----------------------------------------------------------------------------
 // error log throttling
 
-time_t error_log_throttle_period_backup = 0;
 time_t error_log_throttle_period = 1200;
 unsigned long error_log_errors_per_period = 200;
+unsigned long error_log_errors_per_period_backup = 0;
 
 int error_log_limit(int reset) {
     static time_t start = 0;
     static unsigned long counter = 0, prevented = 0;
 
+    // fprintf(stderr, "FLOOD: counter=%lu, allowed=%lu, backup=%lu, period=%llu\n", counter, error_log_errors_per_period, error_log_errors_per_period_backup, (unsigned long long)error_log_throttle_period);
+
     // do not throttle if the period is 0
     if(error_log_throttle_period == 0)
         return 0;
@@ -181,7 +190,7 @@ int error_log_limit(int reset) {
         if(prevented) {
             char date[LOG_DATE_LENGTH];
             log_date(date, LOG_DATE_LENGTH);
-            fprintf(stderr, "%s: %s Resetting logging for process '%s' (prevented %lu logs in the last %ld seconds).\n"
+            fprintf(stderr, "%s: %s LOG FLOOD PROTECTION reset for process '%s' (prevented %lu logs in the last %ld seconds).\n"
                     , date
                     , program_name
                     , program_name
@@ -202,7 +211,7 @@ int error_log_limit(int reset) {
         if(prevented) {
             char date[LOG_DATE_LENGTH];
             log_date(date, LOG_DATE_LENGTH);
-            fprintf(stderr, "%s: %s Resuming logging from process '%s' (prevented %lu logs in the last %ld seconds).\n"
+            fprintf(stderr, "%s: %s LOG FLOOD PROTECTION resuming logging from process '%s' (prevented %lu logs in the last %ld seconds).\n"
                     , date
                     , program_name
                     , program_name
@@ -224,7 +233,7 @@ int error_log_limit(int reset) {
         if(!prevented) {
             char date[LOG_DATE_LENGTH];
             log_date(date, LOG_DATE_LENGTH);
-            fprintf(stderr, "%s: %s Too many logs (%lu logs in %ld seconds, threshold is set to %lu logs in %ld seconds). Preventing more logs from process '%s' for %ld seconds.\n"
+            fprintf(stderr, "%s: %s LOG FLOOD PROTECTION too many logs (%lu logs in %ld seconds, threshold is set to %lu logs in %ld seconds). Preventing more logs from process '%s' for %ld seconds.\n"
                     , date
                     , program_name
                     , counter
diff --git a/src/log.h b/libnetdata/log/log.h
index 81c85481b..48e1599a7 100644
--- a/src/log.h
+++ b/libnetdata/log/log.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_LOG_H
 #define NETDATA_LOG_H 1
 
+#include "../libnetdata.h"
+
 #define D_WEB_BUFFER        0x0000000000000001
 #define D_WEB_CLIENT        0x0000000000000002
 #define D_LISTENER          0x0000000000000004
@@ -55,8 +59,8 @@ extern int access_log_syslog;
 extern int error_log_syslog;
 extern int output_log_syslog;
 
-extern time_t error_log_throttle_period, error_log_throttle_period_backup;
-extern unsigned long error_log_errors_per_period;
+extern time_t error_log_throttle_period;
+extern unsigned long error_log_errors_per_period, error_log_errors_per_period_backup;
 extern int error_log_limit(int reset);
 
 extern void open_all_log_files();
@@ -64,8 +68,11 @@ extern void reopen_all_log_files();
 
 static inline void debug_dummy(void) {}
 
-#define error_log_limit_reset() do { error_log_throttle_period = error_log_throttle_period_backup; error_log_limit(1); } while(0)
-#define error_log_limit_unlimited() do { error_log_throttle_period = 0; } while(0)
+#define error_log_limit_reset() do { error_log_errors_per_period = error_log_errors_per_period_backup; error_log_limit(1); } while(0)
+#define error_log_limit_unlimited() do { \
+        error_log_limit_reset(); \
+        error_log_errors_per_period = ((error_log_errors_per_period_backup * 10) < 10000) ? 10000 : (error_log_errors_per_period_backup * 10); \
+    } while(0)
 
 #ifdef NETDATA_INTERNAL_CHECKS
 #define debug(type, args...) do { if(unlikely(debug_flags & type)) debug_int(__FILE__, __FUNCTION__, __LINE__, ##args); } while(0)
diff --git a/libnetdata/os.c b/libnetdata/os.c
new file mode 100644
index 000000000..0248eb627
--- /dev/null
+++ b/libnetdata/os.c
@@ -0,0 +1,218 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "os.h"
+
+// ----------------------------------------------------------------------------
+// system functions
+// to retrieve settings of the system
+
+int processors = 1;
+long get_system_cpus(void) {
+    processors = 1;
+
+#ifdef __APPLE__
+    int32_t tmp_processors;
+
+        if (unlikely(GETSYSCTL_BY_NAME("hw.logicalcpu", tmp_processors))) {
+            error("Assuming system has %d processors.", processors);
+        } else {
+            processors = tmp_processors;
+        }
+
+        return processors;
+#elif __FreeBSD__
+    int32_t tmp_processors;
+
+        if (unlikely(GETSYSCTL_BY_NAME("hw.ncpu", tmp_processors))) {
+            error("Assuming system has %d processors.", processors);
+        } else {
+            processors = tmp_processors;
+        }
+
+        return processors;
+#else
+
+    char filename[FILENAME_MAX + 1];
+    snprintfz(filename, FILENAME_MAX, "%s/proc/stat", netdata_configured_host_prefix);
+
+    procfile *ff = procfile_open(filename, NULL, PROCFILE_FLAG_DEFAULT);
+    if(!ff) {
+        error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
+        return processors;
+    }
+
+    ff = procfile_readall(ff);
+    if(!ff) {
+        error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
+        return processors;
+    }
+
+    processors = 0;
+    unsigned int i;
+    for(i = 0; i < procfile_lines(ff); i++) {
+        if(!procfile_linewords(ff, i)) continue;
+
+        if(strncmp(procfile_lineword(ff, i, 0), "cpu", 3) == 0) processors++;
+    }
+    processors--;
+    if(processors < 1) processors = 1;
+
+    procfile_close(ff);
+
+    debug(D_SYSTEM, "System has %d processors.", processors);
+    return processors;
+
+#endif /* __APPLE__, __FreeBSD__ */
+}
+
+pid_t pid_max = 32768;
+pid_t get_system_pid_max(void) {
+#ifdef __APPLE__
+    // As we currently do not know a solution to query pid_max from the os
+        // we use the number defined in bsd/sys/proc_internal.h in XNU sources
+        pid_max = 99999;
+        return pid_max;
+#elif __FreeBSD__
+    int32_t tmp_pid_max;
+
+        if (unlikely(GETSYSCTL_BY_NAME("kern.pid_max", tmp_pid_max))) {
+            pid_max = 99999;
+            error("Assuming system's maximum pid is %d.", pid_max);
+        } else {
+            pid_max = tmp_pid_max;
+        }
+
+        return pid_max;
+#else
+
+    static char read = 0;
+    if(unlikely(read)) return pid_max;
+    read = 1;
+
+    char filename[FILENAME_MAX + 1];
+    snprintfz(filename, FILENAME_MAX, "%s/proc/sys/kernel/pid_max", netdata_configured_host_prefix);
+
+    unsigned long long max = 0;
+    if(read_single_number_file(filename, &max) != 0) {
+        error("Cannot open file '%s'. Assuming system supports %d pids.", filename, pid_max);
+        return pid_max;
+    }
+
+    if(!max) {
+        error("Cannot parse file '%s'. Assuming system supports %d pids.", filename, pid_max);
+        return pid_max;
+    }
+
+    pid_max = (pid_t) max;
+    return pid_max;
+
+#endif /* __APPLE__, __FreeBSD__ */
+}
+
+unsigned int system_hz;
+void get_system_HZ(void) {
+    long ticks;
+
+    if ((ticks = sysconf(_SC_CLK_TCK)) == -1) {
+        error("Cannot get system clock ticks");
+    }
+
+    system_hz = (unsigned int) ticks;
+}
+
+// =====================================================================================================================
+// FreeBSD
+
+#if (TARGET_OS == OS_FREEBSD)
+
+int getsysctl_by_name(const char *name, void *ptr, size_t len) {
+    size_t nlen = len;
+
+    if (unlikely(sysctlbyname(name, ptr, &nlen, NULL, 0) == -1)) {
+        error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
+        return 1;
+    }
+    if (unlikely(nlen != len)) {
+        error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
+        return 1;
+    }
+    return 0;
+}
+
+int getsysctl_simple(const char *name, int *mib, size_t miblen, void *ptr, size_t len) {
+    size_t nlen = len;
+
+    if (unlikely(!mib[0]))
+        if (unlikely(getsysctl_mib(name, mib, miblen)))
+            return 1;
+
+    if (unlikely(sysctl(mib, miblen, ptr, &nlen, NULL, 0) == -1)) {
+        error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
+        return 1;
+    }
+    if (unlikely(nlen != len)) {
+        error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
+        return 1;
+    }
+
+    return 0;
+}
+
+int getsysctl(const char *name, int *mib, size_t miblen, void *ptr, size_t *len) {
+    size_t nlen = *len;
+
+    if (unlikely(!mib[0]))
+        if (unlikely(getsysctl_mib(name, mib, miblen)))
+            return 1;
+
+    if (unlikely(sysctl(mib, miblen, ptr, len, NULL, 0) == -1)) {
+        error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
+        return 1;
+    }
+    if (unlikely(ptr != NULL && nlen != *len)) {
+        error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)*len, (unsigned long)nlen);
+        return 1;
+    }
+
+    return 0;
+}
+
+int getsysctl_mib(const char *name, int *mib, size_t len) {
+    size_t nlen = len;
+
+    if (unlikely(sysctlnametomib(name, mib, &nlen) == -1)) {
+        error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
+        return 1;
+    }
+    if (unlikely(nlen != len)) {
+        error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
+        return 1;
+    }
+    return 0;
+}
+
+
+#endif
+
+
+// =====================================================================================================================
+// MacOS
+
+#if (TARGET_OS == OS_MACOS)
+
+int getsysctl_by_name(const char *name, void *ptr, size_t len) {
+    size_t nlen = len;
+
+    if (unlikely(sysctlbyname(name, ptr, &nlen, NULL, 0) == -1)) {
+        error("MACOS: sysctl(%s...) failed: %s", name, strerror(errno));
+        return 1;
+    }
+    if (unlikely(nlen != len)) {
+        error("MACOS: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
+        return 1;
+    }
+    return 0;
+}
+
+#endif // (TARGET_OS == OS_MACOS)
+
diff --git a/libnetdata/os.h b/libnetdata/os.h
new file mode 100644
index 000000000..2494174bc
--- /dev/null
+++ b/libnetdata/os.h
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_OS_H
+#define NETDATA_OS_H
+
+#include "libnetdata.h"
+
+// =====================================================================================================================
+// Linux
+
+#if (TARGET_OS == OS_LINUX)
+
+
+// =====================================================================================================================
+// FreeBSD
+
+#elif (TARGET_OS == OS_FREEBSD)
+
+#include <sys/sysctl.h>
+
+#define GETSYSCTL_BY_NAME(name, var) getsysctl_by_name(name, &(var), sizeof(var))
+extern int getsysctl_by_name(const char *name, void *ptr, size_t len);
+
+#define GETSYSCTL_MIB(name, mib) getsysctl_mib(name, mib, sizeof(mib)/sizeof(int))
+
+extern int getsysctl_mib(const char *name, int *mib, size_t len);
+
+#define GETSYSCTL_SIMPLE(name, mib, var) getsysctl_simple(name, mib, sizeof(mib)/sizeof(int), &(var), sizeof(var))
+#define GETSYSCTL_WSIZE(name, mib, var, size) getsysctl_simple(name, mib, sizeof(mib)/sizeof(int), var, size)
+
+extern int getsysctl_simple(const char *name, int *mib, size_t miblen, void *ptr, size_t len);
+
+#define GETSYSCTL_SIZE(name, mib, size) getsysctl(name, mib, sizeof(mib)/sizeof(int), NULL, &(size))
+#define GETSYSCTL(name, mib, var, size) getsysctl(name, mib, sizeof(mib)/sizeof(int), &(var), &(size))
+
+extern int getsysctl(const char *name, int *mib, size_t miblen, void *ptr, size_t *len);
+
+
+// =====================================================================================================================
+// MacOS
+
+#elif (TARGET_OS == OS_MACOS)
+
+#include <sys/sysctl.h>
+
+#define GETSYSCTL_BY_NAME(name, var) getsysctl_by_name(name, &(var), sizeof(var))
+extern int getsysctl_by_name(const char *name, void *ptr, size_t len);
+
+
+// =====================================================================================================================
+// unknown O/S
+
+#else
+#error unsupported operating system
+#endif
+
+
+// =====================================================================================================================
+// common for all O/S
+
+extern int processors;
+extern long get_system_cpus(void);
+
+extern pid_t pid_max;
+extern pid_t get_system_pid_max(void);
+
+extern unsigned int system_hz;
+extern void get_system_HZ(void);
+
+#endif //NETDATA_OS_H
diff --git a/libnetdata/popen/Makefile.am b/libnetdata/popen/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/popen/Makefile.am
@@ -0,0 +1,9 @@
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+
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+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/popen/Makefile.in b/libnetdata/popen/Makefile.in
new file mode 100644
index 000000000..0a699332f
--- /dev/null
+++ b/libnetdata/popen/Makefile.in
@@ -0,0 +1,464 @@
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+	$(am__cd) $(top_srcdir) && \
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+	  *config.status*) \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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diff --git a/libnetdata/popen/README.md b/libnetdata/popen/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/popen/README.md
diff --git a/src/popen.c b/libnetdata/popen/popen.c
index eda1c05b9..845363fd2 100644
--- a/src/popen.c
+++ b/libnetdata/popen/popen.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 /*
 struct mypopen {
@@ -67,7 +69,7 @@ FILE *mypopen(const char *command, volatile pid_t *pidptr)
 
     // close all files
     int i;
-    for(i = (int) (sysconf(_SC_OPEN_MAX) - 1); i > 0; i--)
+    for(i = (int) (sysconf(_SC_OPEN_MAX) - 1); i >= 0; i--)
         if(i != STDIN_FILENO && i != STDERR_FILENO && i != pipefd[PIPE_WRITE]) close(i);
 
     // move the pipe to stdout
@@ -136,7 +138,7 @@ FILE *mypopene(const char *command, volatile pid_t *pidptr, char **env) {
 
     // close all files
     int i;
-    for(i = (int) (sysconf(_SC_OPEN_MAX) - 1); i > 0; i--)
+    for(i = (int) (sysconf(_SC_OPEN_MAX) - 1); i >= 0; i--)
         if(i != STDIN_FILENO && i != STDERR_FILENO && i != pipefd[PIPE_WRITE]) close(i);
 
     // move the pipe to stdout
diff --git a/src/popen.h b/libnetdata/popen/popen.h
index 3dd79bb4d..90d4b829b 100644
--- a/src/popen.h
+++ b/libnetdata/popen/popen.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_POPEN_H
 #define NETDATA_POPEN_H 1
 
+#include "../libnetdata.h"
+
 #define PIPE_READ 0
 #define PIPE_WRITE 1
 
@@ -8,4 +12,7 @@ extern FILE *mypopen(const char *command, volatile pid_t *pidptr);
 extern FILE *mypopene(const char *command, volatile pid_t *pidptr, char **env);
 extern int mypclose(FILE *fp, pid_t pid);
 
+extern void signals_unblock(void);
+extern void signals_reset(void);
+
 #endif /* NETDATA_POPEN_H */
diff --git a/libnetdata/procfile/Makefile.am b/libnetdata/procfile/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/procfile/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
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new file mode 100644
index 000000000..643e00ba1
--- /dev/null
+++ b/libnetdata/procfile/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/libnetdata/procfile/README.md b/libnetdata/procfile/README.md
new file mode 100644
index 000000000..279885f93
--- /dev/null
+++ b/libnetdata/procfile/README.md
@@ -0,0 +1,61 @@
+
+# PROCFILE
+
+procfile is a library for reading text data files (i.e `/proc` files) in the fastest possible way.
+
+## How it works
+
+The library automatically adapts (through the iterations) its memory so that each file
+is read with single `read()` call.
+
+Then the library splits the file into words, using the supplied separators.
+The library also supported quoted words (i.e. strings within of which the separators are ignored).
+
+### Initialization
+
+Initially the caller: 
+
+- calls `procfile_open()` to open the file and allocate the structures needed.
+
+### Iterations
+
+For each iteration, the caller:
+
+- calls `procfile_readall()` to read updated contents.
+   This call also rewinds (`lseek()` to 0) before reading it.
+
+   For every file, a [BUFFER](../buffer/) is used that is automatically adjusted to fit
+   the entire file contents of the file. So the file is read with a single `read()` call
+   (providing atomicity / consistency when the data are read from the kernel).
+
+   Once the data are read, 2 arrays of pointers are updated:
+
+   - a `words` array, pointing to each word in the data read
+   - a `lines` array, pointing to the first word for each line
+
+   This is highly optimized. Both arrays are automatically adjusted to
+   fit all contents and are updated in a single pass on the data.
+   
+   The library provides a number of macros:
+   
+   - `procfile_lines()` returns the # of lines read
+   - `procfile_linewords()` returns the # of words in the given line
+   - `procfile_word()` returns a pointer the given word #
+   - `procfile_line()` returns a pointer to the first word of the given line #
+   - `procfile_lineword()` returns a pointer to the given word # of the given line #
+
+### Cleanup
+
+When the caller exits:
+
+- calls `procfile_free()` to close the file and free all memory used.
+
+### Performance
+
+- a **raspberry Pi 1** (the oldest single core one) can process 5.000+ `/proc` files per second.
+- a **J1900 Celeron** processor can process 23.000+ `/proc` files per second per core.
+
+To achieve this kind of performance, the library tries to work in batches so that the code
+and the data are inside the processor's caches.
+
+This library is extensively used in netdata and its plugins.
diff --git a/src/procfile.c b/libnetdata/procfile/procfile.c
index 044f975b5..4a812baab 100644
--- a/src/procfile.c
+++ b/libnetdata/procfile/procfile.c
@@ -1,5 +1,6 @@
-#include "common.h"
-#include "procfile.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 #define PF_PREFIX "PROCFILE"
 
@@ -7,6 +8,8 @@
 #define PFLINES_INCREASE_STEP 10
 #define PROCFILE_INCREMENT_BUFFER 512
 
+int procfile_open_flags = O_RDONLY;
+
 int procfile_adaptive_initial_allocation = 0;
 
 // if adaptive allocation is set, these store the
@@ -391,7 +394,7 @@ void procfile_set_open_close(procfile *ff, const char *open, const char *close)
 procfile *procfile_open(const char *filename, const char *separators, uint32_t flags) {
     debug(D_PROCFILE, PF_PREFIX ": Opening file '%s'", filename);
 
-    int fd = open(filename, O_RDONLY, 0666);
+    int fd = open(filename, procfile_open_flags, 0666);
     if(unlikely(fd == -1)) {
         if(unlikely(!(flags & PROCFILE_FLAG_NO_ERROR_ON_FILE_IO))) error(PF_PREFIX ": Cannot open file '%s'", filename);
         return NULL;
@@ -427,7 +430,7 @@ procfile *procfile_reopen(procfile *ff, const char *filename, const char *separa
         close(ff->fd);
     }
 
-    ff->fd = open(filename, O_RDONLY, 0666);
+    ff->fd = open(filename, procfile_open_flags, 0666);
     if(unlikely(ff->fd == -1)) {
         procfile_close(ff);
         return NULL;
@@ -451,6 +454,7 @@ procfile *procfile_reopen(procfile *ff, const char *filename, const char *separa
 void procfile_print(procfile *ff) {
     size_t lines = procfile_lines(ff), l;
     char *s;
+    (void)s;
 
     debug(D_PROCFILE, "File '%s' with %zu lines and %zu words", procfile_filename(ff), ff->lines->len, ff->words->len);
 
diff --git a/src/procfile.h b/libnetdata/procfile/procfile.h
index 012c6efe1..b107358ab 100644
--- a/src/procfile.h
+++ b/libnetdata/procfile/procfile.h
@@ -1,31 +1,10 @@
-/*
- * procfile is a library for reading kernel files from /proc
- *
- * The idea is this:
- *
- *  - every file is opened once with procfile_open().
- *
- *  - to read updated contents, we rewind it (lseek() to 0) and read again
- *    with procfile_readall().
- *
- *  - for every file, we use a buffer that is adjusted to fit its entire
- *    contents in memory, allowing us to read it with a single read() call.
- *    (this provides atomicity / consistency on the data read from the kernel)
- *
- *  - once the data are read, we update two arrays of pointers:
- *     - a words array, pointing to each word in the data read
- *     - a lines array, pointing to the first word for each line
- *
- *    This is highly optimized. Both arrays are automatically adjusted to
- *    fit all contents and are updated in a single pass on the data:
- *     - a raspberry Pi can process 5.000+ files / sec.
- *     - a J1900 celeron processor can process 23.000+ files / sec.
-*/
-
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 #ifndef NETDATA_PROCFILE_H
 #define NETDATA_PROCFILE_H 1
 
+#include "../libnetdata.h"
+
 // ----------------------------------------------------------------------------
 // An array of words
 
@@ -103,6 +82,9 @@ extern char *procfile_filename(procfile *ff);
 
 // ----------------------------------------------------------------------------
 
+// set to the O_XXXX flags, to have procfile_open and procfile_reopen use them when opening proc files
+extern int procfile_open_flags;
+
 // set this to 1, to have procfile adapt its initial buffer allocation to the max allocation used so far
 extern int procfile_adaptive_initial_allocation;
 
diff --git a/libnetdata/simple_pattern/Makefile.am b/libnetdata/simple_pattern/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/simple_pattern/Makefile.am
@@ -0,0 +1,9 @@
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+
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+
+
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diff --git a/libnetdata/simple_pattern/Makefile.in b/libnetdata/simple_pattern/Makefile.in
new file mode 100644
index 000000000..575850f03
--- /dev/null
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@@ -0,0 +1,464 @@
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diff --git a/libnetdata/simple_pattern/README.md b/libnetdata/simple_pattern/README.md
new file mode 100644
index 000000000..22ccf373a
--- /dev/null
+++ b/libnetdata/simple_pattern/README.md
@@ -0,0 +1,36 @@
+## netdata simple patterns
+
+Unix prefers regular expressions. But they are just too hard, too cryptic
+to use, write and understand.
+
+So, netdata supports **simple patterns**.
+
+Simple patterns are a space separated list of words, that can have `*`
+as a wildcard. Each world may use any number of `*`. Simple patterns
+allow **negative** matches by prefixing a word with `!`.
+
+So, `pattern = !*bad* *` will match anything, except all those that
+contain the word `bad`. 
+
+Simple patterns are quite powerful: `pattern = *foobar* !foo* !*bar *`
+matches everything containing `foobar`, except strings that start
+with `foo` or end with `bar`.
+
+You can use the netdata command line to check simple patterns,
+like this:
+
+```sh
+# netdata -W simple-pattern '*foobar* !foo* !*bar *' 'hello world'
+RESULT: MATCHED - pattern '*foobar* !foo* !*bar *' matches 'hello world'
+
+# netdata -W simple-pattern '*foobar* !foo* !*bar *' 'hello world bar'
+RESULT: NOT MATCHED - pattern '*foobar* !foo* !*bar *' does not match 'hello world bar'
+
+# netdata -W simple-pattern '*foobar* !foo* !*bar *' 'hello world foobar'
+RESULT: MATCHED - pattern '*foobar* !foo* !*bar *' matches 'hello world foobar'
+```
+
+netdata stops processing to the first positive or negative match
+(left to right). If it is not matched by either positive or negative
+patterns, it is denied at the end.
+
diff --git a/src/simple_pattern.c b/libnetdata/simple_pattern/simple_pattern.c
index 747b5150a..57b0aecc8 100644
--- a/src/simple_pattern.c
+++ b/libnetdata/simple_pattern/simple_pattern.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 struct simple_pattern {
     const char *match;
diff --git a/src/simple_pattern.h b/libnetdata/simple_pattern/simple_pattern.h
index d0b75af7e..b96a018ef 100644
--- a/src/simple_pattern.h
+++ b/libnetdata/simple_pattern/simple_pattern.h
@@ -1,6 +1,11 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_SIMPLE_PATTERN_H
 #define NETDATA_SIMPLE_PATTERN_H
 
+#include "../libnetdata.h"
+
+
 typedef enum {
     SIMPLE_PATTERN_EXACT,
     SIMPLE_PATTERN_PREFIX,
diff --git a/libnetdata/socket/Makefile.am b/libnetdata/socket/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/socket/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/socket/Makefile.in b/libnetdata/socket/Makefile.in
new file mode 100644
index 000000000..45f13d068
--- /dev/null
+++ b/libnetdata/socket/Makefile.in
@@ -0,0 +1,464 @@
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+
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+
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+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
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+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+	README.md \
+	$(NULL)
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+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
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+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
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+	$(am__cd) $(top_srcdir) && \
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+	@case '$?' in \
+	  *config.status*) \
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+	    fi; \
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diff --git a/libnetdata/socket/README.md b/libnetdata/socket/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/socket/README.md
diff --git a/src/socket.c b/libnetdata/socket/socket.c
index 8bede73fd..c266efeb4 100644
--- a/src/socket.c
+++ b/libnetdata/socket/socket.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 // --------------------------------------------------------------------------------------------------------------------
 // various library calls
@@ -45,12 +47,14 @@ int sock_setreuse(int fd, int reuse) {
 }
 
 int sock_setreuse_port(int fd, int reuse) {
-    int ret = -1;
+    int ret;
 
 #ifdef SO_REUSEPORT
     ret = setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &reuse, sizeof(reuse));
     if(ret == -1 && errno != ENOPROTOOPT)
         error("failed to set SO_REUSEPORT on socket %d", fd);
+#else
+    ret = -1;
 #endif
 
     return ret;
@@ -80,7 +84,7 @@ int sock_enlarge_out(int fd) {
 
 // --------------------------------------------------------------------------------------------------------------------
 
-char *strdup_client_description(int family, const char *protocol, const char *ip, int port) {
+char *strdup_client_description(int family, const char *protocol, const char *ip, uint16_t port) {
     char buffer[100 + 1];
 
     switch(family) {
@@ -148,7 +152,7 @@ int create_listen_socket_unix(const char *path, int listen_backlog) {
     return sock;
 }
 
-int create_listen_socket4(int socktype, const char *ip, int port, int listen_backlog) {
+int create_listen_socket4(int socktype, const char *ip, uint16_t port, int listen_backlog) {
     int sock;
 
     debug(D_LISTENER, "LISTENER: IPv4 creating new listening socket on ip '%s' port %d, socktype %d", ip, port, socktype);
@@ -244,7 +248,7 @@ int create_listen_socket6(int socktype, uint32_t scope_id, const char *ip, int p
     return sock;
 }
 
-static inline int listen_sockets_add(LISTEN_SOCKETS *sockets, int fd, int family, int socktype, const char *protocol, const char *ip, int port) {
+static inline int listen_sockets_add(LISTEN_SOCKETS *sockets, int fd, int family, int socktype, const char *protocol, const char *ip, uint16_t port) {
     if(sockets->opened >= MAX_LISTEN_FDS) {
         error("LISTENER: Too many listening sockets. Failed to add listening %s socket at ip '%s' port %d, protocol %s, socktype %d", protocol, ip, port, protocol, socktype);
         close(fd);
@@ -296,7 +300,7 @@ void listen_sockets_close(LISTEN_SOCKETS *sockets) {
     sockets->failed = 0;
 }
 
-static inline int bind_to_this(LISTEN_SOCKETS *sockets, const char *definition, int default_port, int listen_backlog) {
+static inline int bind_to_this(LISTEN_SOCKETS *sockets, const char *definition, uint16_t default_port, int listen_backlog) {
     int added = 0;
     struct addrinfo hints;
     struct addrinfo *result = NULL, *rp = NULL;
@@ -396,10 +400,10 @@ static inline int bind_to_this(LISTEN_SOCKETS *sockets, const char *definition,
 
     for (rp = result; rp != NULL; rp = rp->ai_next) {
         int fd = -1;
-        int family = -1;
+        int family;
 
         char rip[INET_ADDRSTRLEN + INET6_ADDRSTRLEN] = "INVALID";
-        int rport = default_port;
+        uint16_t rport = default_port;
 
         family = rp->ai_addr->sa_family;
         switch (family) {
@@ -444,17 +448,19 @@ static inline int bind_to_this(LISTEN_SOCKETS *sockets, const char *definition,
 int listen_sockets_setup(LISTEN_SOCKETS *sockets) {
     listen_sockets_init(sockets);
 
-    sockets->backlog = (int) config_get_number(sockets->config_section, "listen backlog", sockets->backlog);
+    sockets->backlog = (int) appconfig_get_number(sockets->config, sockets->config_section, "listen backlog", sockets->backlog);
 
-    int old_port = sockets->default_port;
-    sockets->default_port = (int) config_get_number(sockets->config_section, "default port", sockets->default_port);
-    if(sockets->default_port < 1 || sockets->default_port > 65535) {
-        error("LISTENER: Invalid listen port %d given. Defaulting to %d.", sockets->default_port, old_port);
-        sockets->default_port = (int) config_set_number(sockets->config_section, "default port", old_port);
+    long long int old_port = sockets->default_port;
+    long long int new_port = appconfig_get_number(sockets->config, sockets->config_section, "default port", sockets->default_port);
+    if(new_port < 1 || new_port > 65535) {
+        error("LISTENER: Invalid listen port %lld given. Defaulting to %lld.", new_port, old_port);
+        sockets->default_port = (uint16_t) appconfig_set_number(sockets->config, sockets->config_section, "default port", old_port);
     }
+    else sockets->default_port = (uint16_t)new_port;
+
     debug(D_OPTIONS, "LISTENER: Default listen port set to %d.", sockets->default_port);
 
-    char *s = config_get(sockets->config_section, "bind to", sockets->default_bind_to);
+    char *s = appconfig_get(sockets->config, sockets->config_section, "bind to", sockets->default_bind_to);
     while(*s) {
         char *e = s;
 
@@ -585,6 +591,8 @@ static inline int connect_to_this_ip46(int protocol, int socktype, const char *h
         switch (ai->ai_addr->sa_family) {
             case PF_INET: {
                 struct sockaddr_in *pSadrIn = (struct sockaddr_in *)ai->ai_addr;
+                (void)pSadrIn;
+
                 debug(D_CONNECT_TO, "ai_addr = sin_family: %d (AF_INET = %d, AF_INET6 = %d), sin_addr: '%s', sin_port: '%s'",
                       pSadrIn->sin_family,
                       AF_INET,
@@ -596,6 +604,8 @@ static inline int connect_to_this_ip46(int protocol, int socktype, const char *h
 
             case PF_INET6: {
                 struct sockaddr_in6 *pSadrIn6 = (struct sockaddr_in6 *) ai->ai_addr;
+                (void)pSadrIn6;
+
                 debug(D_CONNECT_TO,"ai_addr = sin6_family: %d (AF_INET = %d, AF_INET6 = %d), sin6_addr: '%s', sin6_port: '%s', sin6_flowinfo: %u, sin6_scope_id: %u",
                       pSadrIn6->sin6_family,
                       AF_INET,
@@ -968,10 +978,10 @@ inline POLLINFO *poll_add_fd(POLLJOB *p
                              , uint32_t flags
                              , const char *client_ip
                              , const char *client_port
-                             , void *(*add_callback)(POLLINFO *pi, short int *events, void *data)
-                             , void  (*del_callback)(POLLINFO *pi)
-                             , int   (*rcv_callback)(POLLINFO *pi, short int *events)
-                             , int   (*snd_callback)(POLLINFO *pi, short int *events)
+                             , void *(*add_callback)(POLLINFO * /*pi*/, short int * /*events*/, void * /*data*/)
+                             , void  (*del_callback)(POLLINFO * /*pi*/)
+                             , int   (*rcv_callback)(POLLINFO * /*pi*/, short int * /*events*/)
+                             , int   (*snd_callback)(POLLINFO * /*pi*/, short int * /*events*/)
                              , void *data
 ) {
     debug(D_POLLFD, "POLLFD: ADD: request to add fd %d, slots = %zu, used = %zu, min = %zu, max = %zu, next free = %zd", fd, p->slots, p->used, p->min, p->max, p->first_free?(ssize_t)p->first_free->slot:(ssize_t)-1);
@@ -1286,7 +1296,9 @@ static void poll_events_process(POLLJOB *p, POLLINFO *pi, struct pollfd *pf, sho
 
                     debug(D_POLLFD, "POLLFD: LISTENER: reading data from UDP slot %zu (fd %d)", i, fd);
 
-                    // FIXME: access_list is not applied to UDP
+                    // TODO: access_list is not applied to UDP
+                    // but checking the access list on every UDP packet will destroy
+                    // performance, especially for statsd.
 
                     pf->events = 0;
                     pi->rcv_callback(pi, &pf->events);
@@ -1349,11 +1361,11 @@ static void poll_events_process(POLLJOB *p, POLLINFO *pi, struct pollfd *pf, sho
 }
 
 void poll_events(LISTEN_SOCKETS *sockets
-        , void *(*add_callback)(POLLINFO *pi, short int *events, void *data)
-        , void  (*del_callback)(POLLINFO *pi)
-        , int   (*rcv_callback)(POLLINFO *pi, short int *events)
-        , int   (*snd_callback)(POLLINFO *pi, short int *events)
-        , void  (*tmr_callback)(void *timer_data)
+        , void *(*add_callback)(POLLINFO * /*pi*/, short int * /*events*/, void * /*data*/)
+        , void  (*del_callback)(POLLINFO * /*pi*/)
+        , int   (*rcv_callback)(POLLINFO * /*pi*/, short int * /*events*/)
+        , int   (*snd_callback)(POLLINFO * /*pi*/, short int * /*events*/)
+        , void  (*tmr_callback)(void * /*timer_data*/)
         , SIMPLE_PATTERN *access_list
         , void *data
         , time_t tcp_request_timeout_seconds
@@ -1423,6 +1435,8 @@ void poll_events(LISTEN_SOCKETS *sockets
 
     usec_t timer_usec = timer_milliseconds * USEC_PER_MS;
     usec_t now_usec = 0, next_timer_usec = 0, last_timer_usec = 0;
+    (void)last_timer_usec;
+
     if(unlikely(timer_usec)) {
         now_usec = now_boottime_usec();
         next_timer_usec = now_usec - (now_usec % timer_usec) + timer_usec;
diff --git a/src/socket.h b/libnetdata/socket/socket.h
index 7b3e726ec..f5412b63d 100644
--- a/src/socket.h
+++ b/libnetdata/socket/socket.h
@@ -1,14 +1,19 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_SOCKET_H
 #define NETDATA_SOCKET_H
 
+#include "../libnetdata.h"
+
 #ifndef MAX_LISTEN_FDS
 #define MAX_LISTEN_FDS 50
 #endif
 
 typedef struct listen_sockets {
+    struct config *config;              // the config file to use
     const char *config_section;         // the netdata configuration section to read settings from
     const char *default_bind_to;        // the default bind to configuration string
-    int default_port;                   // the default port to use
+    uint16_t default_port;              // the default port to use
     int backlog;                        // the default listen backlog to use
 
     size_t opened;                      // the number of sockets opened
@@ -19,7 +24,7 @@ typedef struct listen_sockets {
     int fds_families[MAX_LISTEN_FDS];   // the family of the open sockets (AF_UNIX, AF_INET, AF_INET6)
 } LISTEN_SOCKETS;
 
-extern char *strdup_client_description(int family, const char *protocol, const char *ip, int port);
+extern char *strdup_client_description(int family, const char *protocol, const char *ip, uint16_t port);
 
 extern int listen_sockets_setup(LISTEN_SOCKETS *sockets);
 extern void listen_sockets_close(LISTEN_SOCKETS *sockets);
diff --git a/libnetdata/statistical/Makefile.am b/libnetdata/statistical/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/statistical/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/statistical/Makefile.in b/libnetdata/statistical/Makefile.in
new file mode 100644
index 000000000..8209a1ecb
--- /dev/null
+++ b/libnetdata/statistical/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
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+
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+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
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+pdf: pdf-am
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+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/statistical/README.md b/libnetdata/statistical/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/statistical/README.md
diff --git a/src/statistical.c b/libnetdata/statistical/statistical.c
index d4b33fd5a..15792fd15 100644
--- a/src/statistical.c
+++ b/libnetdata/statistical/statistical.c
@@ -1,37 +1,36 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
 
-// --------------------------------------------------------------------------------------------------------------------
-
-inline LONG_DOUBLE sum_and_count(const LONG_DOUBLE *series, size_t entries, size_t *count) {
-    if(unlikely(entries == 0)) {
-        if(likely(count))
-            *count = 0;
+#include "../libnetdata.h"
 
-        return NAN;
-    }
+LONG_DOUBLE default_single_exponential_smoothing_alpha = 0.1;
 
-    if(unlikely(entries == 1)) {
-        if(likely(count))
-            *count = (isnan(series[0])?0:1);
+void log_series_to_stderr(LONG_DOUBLE *series, size_t entries, calculated_number result, const char *msg) {
+    const LONG_DOUBLE *value, *end = &series[entries];
 
-        return series[0];
+    fprintf(stderr, "%s of %zu entries [ ", msg, entries);
+    for(value = series; value < end ;value++) {
+        if(value != series) fprintf(stderr, ", ");
+        fprintf(stderr, "%" LONG_DOUBLE_MODIFIER, *value);
     }
+    fprintf(stderr, " ] results in " CALCULATED_NUMBER_FORMAT "\n", result);
+}
+
+// --------------------------------------------------------------------------------------------------------------------
 
-    size_t i, c = 0;
+inline LONG_DOUBLE sum_and_count(const LONG_DOUBLE *series, size_t entries, size_t *count) {
+    const LONG_DOUBLE *value, *end = &series[entries];
     LONG_DOUBLE sum = 0;
+    size_t c = 0;
 
-    for(i = 0; i < entries ; i++) {
-        LONG_DOUBLE value = series[i];
-        if(unlikely(isnan(value) || isinf(value))) continue;
-        c++;
-        sum += value;
+    for(value = series; value < end ; value++) {
+        if(isnormal(*value)) {
+            sum += *value;
+            c++;
+        }
     }
 
-    if(likely(count))
-        *count = c;
-
-    if(unlikely(c == 0))
-        return NAN;
+    if(unlikely(!c)) sum = NAN;
+    if(likely(count)) *count = c;
 
     return sum;
 }
@@ -44,9 +43,7 @@ inline LONG_DOUBLE average(const LONG_DOUBLE *series, size_t entries) {
     size_t count = 0;
     LONG_DOUBLE sum = sum_and_count(series, entries, &count);
 
-    if(unlikely(count == 0))
-        return NAN;
-
+    if(unlikely(!count)) return NAN;
     return sum / (LONG_DOUBLE)count;
 }
 
@@ -65,7 +62,7 @@ LONG_DOUBLE moving_average(const LONG_DOUBLE *series, size_t entries, size_t per
 
     for(i = 0, count = 0; i < entries; i++) {
         LONG_DOUBLE value = series[i];
-        if(unlikely(isnan(value) || isinf(value))) continue;
+        if(unlikely(!isnormal(value))) continue;
 
         if(unlikely(count < period)) {
             sum += value;
@@ -116,33 +113,25 @@ inline LONG_DOUBLE *copy_series(const LONG_DOUBLE *series, size_t entries) {
 }
 
 LONG_DOUBLE median_on_sorted_series(const LONG_DOUBLE *series, size_t entries) {
-    if(unlikely(entries == 0))
-        return NAN;
-
-    if(unlikely(entries == 1))
-        return series[0];
-
-    if(unlikely(entries == 2))
-        return (series[0] + series[1]) / 2;
+    if(unlikely(entries == 0)) return NAN;
+    if(unlikely(entries == 1)) return series[0];
+    if(unlikely(entries == 2)) return (series[0] + series[1]) / 2;
 
-    LONG_DOUBLE avg;
+    LONG_DOUBLE average;
     if(entries % 2 == 0) {
         size_t m = entries / 2;
-        avg = (series[m] + series[m + 1]) / 2;
+        average = (series[m] + series[m + 1]) / 2;
     }
     else {
-        avg = series[entries / 2];
+        average = series[entries / 2];
     }
 
-    return avg;
+    return average;
 }
 
 LONG_DOUBLE median(const LONG_DOUBLE *series, size_t entries) {
-    if(unlikely(entries == 0))
-        return NAN;
-
-    if(unlikely(entries == 1))
-        return series[0];
+    if(unlikely(entries == 0)) return NAN;
+    if(unlikely(entries == 1)) return series[0];
 
     if(unlikely(entries == 2))
         return (series[0] + series[1]) / 2;
@@ -184,7 +173,7 @@ LONG_DOUBLE running_median_estimate(const LONG_DOUBLE *series, size_t entries) {
 
     for(i = 0; i < entries ; i++) {
         LONG_DOUBLE value = series[i];
-        if(unlikely(isnan(value) || isinf(value))) continue;
+        if(unlikely(!isnormal(value))) continue;
 
         average += ( value - average ) * 0.1f; // rough running average.
         median += copysignl( average * 0.01, value - median );
@@ -196,47 +185,36 @@ LONG_DOUBLE running_median_estimate(const LONG_DOUBLE *series, size_t entries) {
 // --------------------------------------------------------------------------------------------------------------------
 
 LONG_DOUBLE standard_deviation(const LONG_DOUBLE *series, size_t entries) {
-    if(unlikely(entries < 1))
-        return NAN;
-
-    if(unlikely(entries == 1))
-        return series[0];
-
-    size_t i, count = 0;
-    LONG_DOUBLE sum = 0;
+    if(unlikely(entries == 0)) return NAN;
+    if(unlikely(entries == 1)) return series[0];
 
-    for(i = 0; i < entries ; i++) {
-        LONG_DOUBLE value = series[i];
-        if(unlikely(isnan(value) || isinf(value))) continue;
+    const LONG_DOUBLE *value, *end = &series[entries];
+    size_t count;
+    LONG_DOUBLE sum;
 
-        count++;
-        sum += value;
+    for(count = 0, sum = 0, value = series ; value < end ;value++) {
+        if(likely(isnormal(*value))) {
+            count++;
+            sum += *value;
+        }
     }
 
-    if(unlikely(count == 0))
-        return NAN;
-
-    if(unlikely(count == 1))
-        return sum;
+    if(unlikely(count == 0)) return NAN;
+    if(unlikely(count == 1)) return sum;
 
     LONG_DOUBLE average = sum / (LONG_DOUBLE)count;
 
-    for(i = 0, count = 0, sum = 0; i < entries ; i++) {
-        LONG_DOUBLE value = series[i];
-        if(unlikely(isnan(value) || isinf(value))) continue;
-
-        count++;
-        sum += powl(value - average, 2);
+    for(count = 0, sum = 0, value = series ; value < end ;value++) {
+        if(isnormal(*value)) {
+            count++;
+            sum += powl(*value - average, 2);
+        }
     }
 
-    if(unlikely(count == 0))
-        return NAN;
-
-    if(unlikely(count == 1))
-        return average;
-
-    LONG_DOUBLE variance = sum / (LONG_DOUBLE)(count - 1); // remove -1 to have a population stddev
+    if(unlikely(count == 0)) return NAN;
+    if(unlikely(count == 1)) return average;
 
+    LONG_DOUBLE variance = sum / (LONG_DOUBLE)(count); // remove -1 from count to have a population stddev
     LONG_DOUBLE stddev = sqrtl(variance);
     return stddev;
 }
@@ -244,21 +222,36 @@ LONG_DOUBLE standard_deviation(const LONG_DOUBLE *series, size_t entries) {
 // --------------------------------------------------------------------------------------------------------------------
 
 LONG_DOUBLE single_exponential_smoothing(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha) {
-    size_t i, count = 0;
-    LONG_DOUBLE level = 0, sum = 0;
+    if(unlikely(entries == 0))
+        return NAN;
 
     if(unlikely(isnan(alpha)))
-        alpha = 0.3;
+        alpha = default_single_exponential_smoothing_alpha;
 
-    for(i = 0; i < entries ; i++) {
-        LONG_DOUBLE value = series[i];
-        if(unlikely(isnan(value) || isinf(value))) continue;
-        count++;
+    const LONG_DOUBLE *value = series, *end = &series[entries];
+    LONG_DOUBLE level = (1.0 - alpha) * (*value);
+
+    for(value++ ; value < end; value++) {
+        if(likely(isnormal(*value)))
+            level = alpha * (*value) + (1.0 - alpha) * level;
+    }
 
-        sum += value;
+    return level;
+}
+
+LONG_DOUBLE single_exponential_smoothing_reverse(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha) {
+    if(unlikely(entries == 0))
+        return NAN;
 
-        LONG_DOUBLE last_level = level;
-        level = alpha * value + (1.0 - alpha) * last_level;
+    if(unlikely(isnan(alpha)))
+        alpha = default_single_exponential_smoothing_alpha;
+
+    const LONG_DOUBLE *value = &series[entries -1];
+    LONG_DOUBLE level = (1.0 - alpha) * (*value);
+
+    for(value++ ; value >= series; value--) {
+        if(likely(isnormal(*value)))
+            level = alpha * (*value) + (1.0 - alpha) * level;
     }
 
     return level;
@@ -268,8 +261,10 @@ LONG_DOUBLE single_exponential_smoothing(const LONG_DOUBLE *series, size_t entri
 
 // http://grisha.org/blog/2016/02/16/triple-exponential-smoothing-forecasting-part-ii/
 LONG_DOUBLE double_exponential_smoothing(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha, LONG_DOUBLE beta, LONG_DOUBLE *forecast) {
-    size_t i, count = 0;
-    LONG_DOUBLE level = series[0], trend, sum;
+    if(unlikely(entries == 0))
+        return NAN;
+
+    LONG_DOUBLE level, trend;
 
     if(unlikely(isnan(alpha)))
         alpha = 0.3;
@@ -277,24 +272,22 @@ LONG_DOUBLE double_exponential_smoothing(const LONG_DOUBLE *series, size_t entri
     if(unlikely(isnan(beta)))
         beta = 0.05;
 
+    level = series[0];
+
     if(likely(entries > 1))
         trend = series[1] - series[0];
     else
         trend = 0;
 
-    sum = series[0];
-
-    for(i = 1; i < entries ; i++) {
-        LONG_DOUBLE value = series[i];
-        if(unlikely(isnan(value) || isinf(value))) continue;
-        count++;
+    const LONG_DOUBLE *value = series;
+    for(value++ ; value >= series; value--) {
+        if(likely(isnormal(*value))) {
 
-        sum += value;
+            LONG_DOUBLE last_level = level;
+            level = alpha * *value + (1.0 - alpha) * (level + trend);
+            trend = beta * (level - last_level) + (1.0 - beta) * trend;
 
-        LONG_DOUBLE last_level = level;
-
-        level = alpha * value + (1.0 - alpha) * (level + trend);
-        trend = beta * (level - last_level) + (1.0 - beta) * trend;
+        }
     }
 
     if(forecast)
diff --git a/src/statistical.h b/libnetdata/statistical/statistical.h
index 675389021..586c6b34a 100644
--- a/src/statistical.h
+++ b/libnetdata/statistical/statistical.h
@@ -1,5 +1,15 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_STATISTICAL_H
-#define NETDATA_STATISTICAL_H
+#define NETDATA_STATISTICAL_H 1
+
+#include "../libnetdata.h"
+
+#ifndef isnormal
+#define isnormal(x) (fpclassify(x) == FP_NORMAL)
+#endif
+
+extern void log_series_to_stderr(LONG_DOUBLE *series, size_t entries, calculated_number result, const char *msg);
 
 extern LONG_DOUBLE average(const LONG_DOUBLE *series, size_t entries);
 extern LONG_DOUBLE moving_average(const LONG_DOUBLE *series, size_t entries, size_t period);
@@ -8,6 +18,7 @@ extern LONG_DOUBLE moving_median(const LONG_DOUBLE *series, size_t entries, size
 extern LONG_DOUBLE running_median_estimate(const LONG_DOUBLE *series, size_t entries);
 extern LONG_DOUBLE standard_deviation(const LONG_DOUBLE *series, size_t entries);
 extern LONG_DOUBLE single_exponential_smoothing(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha);
+extern LONG_DOUBLE single_exponential_smoothing_reverse(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha);
 extern LONG_DOUBLE double_exponential_smoothing(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha, LONG_DOUBLE beta, LONG_DOUBLE *forecast);
 extern LONG_DOUBLE holtwinters(const LONG_DOUBLE *series, size_t entries, LONG_DOUBLE alpha, LONG_DOUBLE beta, LONG_DOUBLE gamma, LONG_DOUBLE *forecast);
 extern LONG_DOUBLE sum_and_count(const LONG_DOUBLE *series, size_t entries, size_t *count);
diff --git a/libnetdata/storage_number/Makefile.am b/libnetdata/storage_number/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/storage_number/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/libnetdata/storage_number/Makefile.in b/libnetdata/storage_number/Makefile.in
new file mode 100644
index 000000000..1ab5afd87
--- /dev/null
+++ b/libnetdata/storage_number/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+
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diff --git a/libnetdata/storage_number/README.md b/libnetdata/storage_number/README.md
new file mode 100644
index 000000000..206c42b87
--- /dev/null
+++ b/libnetdata/storage_number/README.md
@@ -0,0 +1,10 @@
+# netdata storage number
+
+Although `netdata` does all its calculations using `long double`, it stores all values using
+a **custom-made 32-bit number**.
+
+This custom-made number can store in 29 bits values from `-167772150000000.0` to  `167772150000000.0`
+with a precision of 0.00001 (yes, it's a floating point number, meaning that higher integer values
+have less decimal precision) and 3 bits for flags.
+
+This provides an extremely optimized memory footprint with just 0.0001% max accuracy loss.
diff --git a/src/storage_number.c b/libnetdata/storage_number/storage_number.c
index c7bbaa8d9..db4cb700b 100644
--- a/src/storage_number.c
+++ b/libnetdata/storage_number/storage_number.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 storage_number pack_storage_number(calculated_number value, uint32_t flags)
 {
diff --git a/src/storage_number.h b/libnetdata/storage_number/storage_number.h
index ef81863fd..5353ab60b 100644
--- a/src/storage_number.h
+++ b/libnetdata/storage_number/storage_number.h
@@ -1,5 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_STORAGE_NUMBER_H
-#define NETDATA_STORAGE_NUMBER_H
+#define NETDATA_STORAGE_NUMBER_H 1
+
+#include "../libnetdata.h"
 
 #ifdef NETDATA_WITHOUT_LONG_DOUBLE
 
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new file mode 100644
index 000000000..1cb69ed99
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diff --git a/libnetdata/threads/README.md b/libnetdata/threads/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/threads/README.md
diff --git a/src/threads.c b/libnetdata/threads/threads.c
index b9ca3c085..133d9a547 100644
--- a/src/threads.c
+++ b/libnetdata/threads/threads.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 static size_t default_stacksize = 0, wanted_stacksize = 0;
 static pthread_attr_t *attr = NULL;
diff --git a/src/threads.h b/libnetdata/threads/threads.h
index e2ed6a4ff..eec6ad0e3 100644
--- a/src/threads.h
+++ b/libnetdata/threads/threads.h
@@ -1,5 +1,9 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_THREADS_H
-#define NETDATA_THREADS_H
+#define NETDATA_THREADS_H 1
+
+#include "../libnetdata.h"
 
 extern pid_t gettid(void);
 
diff --git a/libnetdata/url/Makefile.am b/libnetdata/url/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/libnetdata/url/Makefile.am
@@ -0,0 +1,9 @@
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+
+
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+	README.md \
+	$(NULL)
diff --git a/libnetdata/url/Makefile.in b/libnetdata/url/Makefile.in
new file mode 100644
index 000000000..8ccc4fd64
--- /dev/null
+++ b/libnetdata/url/Makefile.in
@@ -0,0 +1,464 @@
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+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu libnetdata/url/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu libnetdata/url/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/url/README.md b/libnetdata/url/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/libnetdata/url/README.md
diff --git a/src/url.c b/libnetdata/url/url.c
index 6be4d9648..07a9f8069 100644
--- a/src/url.c
+++ b/libnetdata/url/url.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
 
 // ----------------------------------------------------------------------------
 // URL encode / decode
@@ -58,7 +60,9 @@ char *url_decode_r(char *to, char *url, size_t size) {
     while(*s && d < e) {
         if(unlikely(*s == '%')) {
             if(likely(s[1] && s[2])) {
-                *d++ = from_hex(s[1]) << 4 | from_hex(s[2]);
+                char t = from_hex(s[1]) << 4 | from_hex(s[2]);
+                // avoid HTTP header injection
+                *d++ = (char)((isprint(t))? t : ' ');
                 s += 2;
             }
         }
diff --git a/src/url.h b/libnetdata/url/url.h
index fa44d49a8..6cef6d7a8 100644
--- a/src/url.h
+++ b/libnetdata/url/url.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_URL_H
 #define NETDATA_URL_H 1
 
+#include "../libnetdata.h"
+
 // ----------------------------------------------------------------------------
 // URL encode / decode
 // code from: http://www.geekhideout.com/urlcode.shtml
diff --git a/makeself/Makefile.am b/makeself/Makefile.am
index 923f3cefb..f6f9167a0 100644
--- a/makeself/Makefile.am
+++ b/makeself/Makefile.am
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
 
 dist_noinst_DATA = \
@@ -10,8 +11,8 @@ dist_noinst_SCRIPTS = \
 	install-alpine-packages.sh \
 	post-installer.sh \
 	jobs/10-prepare-destination.install.sh \
-	jobs/50-curl-7.53.1.install.sh \
-	jobs/50-bash-4.4.install.sh \
+	jobs/50-curl-7.60.0.install.sh \
+	jobs/50-bash-4.4.18.install.sh \
 	jobs/50-fping-4.0.install.sh \
 	jobs/70-netdata-git.install.sh \
 	jobs/99-makeself.install.sh \
diff --git a/makeself/Makefile.in b/makeself/Makefile.in
index 9c84cc042..8962dbbc1 100644
--- a/makeself/Makefile.in
+++ b/makeself/Makefile.in
@@ -83,14 +83,16 @@ subdir = makeself
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(dist_noinst_SCRIPTS) $(dist_noinst_DATA)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -217,6 +219,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -238,6 +241,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
@@ -264,6 +268,8 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 varlibdir = @varlibdir@
 webdir = @webdir@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 dist_noinst_DATA = \
 	$(NULL)
@@ -275,8 +281,8 @@ dist_noinst_SCRIPTS = \
 	install-alpine-packages.sh \
 	post-installer.sh \
 	jobs/10-prepare-destination.install.sh \
-	jobs/50-curl-7.53.1.install.sh \
-	jobs/50-bash-4.4.install.sh \
+	jobs/50-curl-7.60.0.install.sh \
+	jobs/50-bash-4.4.18.install.sh \
 	jobs/50-fping-4.0.install.sh \
 	jobs/70-netdata-git.install.sh \
 	jobs/99-makeself.install.sh \
diff --git a/makeself/build-x86_64-static.sh b/makeself/build-x86_64-static.sh
index 357666093..b0902512c 100755
--- a/makeself/build-x86_64-static.sh
+++ b/makeself/build-x86_64-static.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 . $(dirname "$0")/../installer/functions.sh || exit 1
 
diff --git a/makeself/build.sh b/makeself/build.sh
index afa4f545e..e8c1c9ddc 100755
--- a/makeself/build.sh
+++ b/makeself/build.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env sh
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # -----------------------------------------------------------------------------
 # parse command line arguments
@@ -32,7 +33,7 @@ cd $(dirname "$0") || exit 1
 # download it and run from it
 if [ ! -f ../netdata-installer.sh ]
 then
-    git clone https://github.com/firehol/netdata.git netdata.git || exit 1
+    git clone https://github.com/netdata/netdata.git netdata.git || exit 1
     cd netdata.git/makeself || exit 1
     ./build.sh "$@"
     exit $?
diff --git a/makeself/functions.sh b/makeself/functions.sh
index 839fc3226..10b324deb 100755
--- a/makeself/functions.sh
+++ b/makeself/functions.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # -----------------------------------------------------------------------------
 
@@ -38,7 +39,7 @@ fetch() {
     if [ ! -d "${NETDATA_MAKESELF_PATH}/tmp/${dir}" ]
         then
         cd "${NETDATA_MAKESELF_PATH}/tmp"
-        run tar -zxvpf "${tar}"
+        run tar -zxpf "${tar}"
         cd -
     fi
 
diff --git a/makeself/install-alpine-packages.sh b/makeself/install-alpine-packages.sh
index 87cd29669..695be4d4f 100755
--- a/makeself/install-alpine-packages.sh
+++ b/makeself/install-alpine-packages.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env sh
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # this script should be running in alpine linux
 # install the required packages
diff --git a/makeself/install-or-update.sh b/makeself/install-or-update.sh
index eed2bc301..bfcbe720a 100755
--- a/makeself/install-or-update.sh
+++ b/makeself/install-or-update.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 . $(dirname "${0}")/functions.sh
 
@@ -23,62 +24,49 @@ do
     shift
 done
 
+deleted_stock_configs=0
+if [ ! -f "etc/netdata/.installer-cleanup-of-stock-configs-done" ]
+then
 
-# -----------------------------------------------------------------------------
-progress "Checking new configuration files"
-
-declare -A configs_signatures=()
-. system/configs.signatures
-
-if [ ! -d etc/netdata ]
-    then
-    run mkdir -p etc/netdata
-fi
-
-md5sum="$(which md5sum 2>/dev/null || command -v md5sum 2>/dev/null || command -v md5 2>/dev/null)"
-for x in $(find etc.new -type f)
-do
-    # find it relative filename
-    f="${x/etc.new\/netdata\//}"
-    t="${x/etc.new\//etc\/}"
-    d=$(dirname "${t}")
+    # -----------------------------------------------------------------------------
+    progress "Deleting stock configuration files from user configuration directory"
 
-    #echo >&2 "x: ${x}"
-    #echo >&2 "t: ${t}"
-    #echo >&2 "d: ${d}"
+    declare -A configs_signatures=()
+    source "system/configs.signatures"
 
-    if [ ! -d "${d}" ]
+    if [ ! -d etc/netdata ]
         then
-        run mkdir -p "${d}"
+        run mkdir -p etc/netdata
     fi
 
-    if [ ! -f "${t}" ]
-        then
-        run cp "${x}" "${t}"
-        continue
-    fi
+    md5sum="$(which md5sum 2>/dev/null || command -v md5sum 2>/dev/null || command -v md5 2>/dev/null)"
+    for x in $(find etc -type f)
+    do
+        # find it relative filename
+        f="${x/etc\/netdata\//}"
 
-    if [ ! -z "${md5sum}" ]
-        then
-        # find the checksum of the existing file
-        md5="$(cat "${t}" | ${md5sum} | cut -d ' ' -f 1)"
-        #echo >&2 "md5: ${md5}"
+        # find the stock filename
+        t="${f/.conf.old/.conf}"
+        t="${t/.conf.orig/.conf}"
 
-        # check if it matches
-        if [ "${configs_signatures[${md5}]}" = "${f}" ]
+        if [ ! -z "${md5sum}" ]
             then
-            run cp "${x}" "${t}"
+            # find the checksum of the existing file
+            md5="$( ${md5sum} <"${x}" | cut -d ' ' -f 1)"
+            #echo >&2 "md5: ${md5}"
+
+            # check if it matches
+            if [ "${configs_signatures[${md5}]}" = "${t}" ]
+                then
+                # it matches the default
+                run rm -f "${x}"
+                deleted_stock_configs=$(( deleted_stock_configs + 1 ))
+            fi
         fi
-    fi
-    
-    if ! [[ "${x}" =~ .*\.orig ]]
-        then
-        run mv "${x}" "${t}.orig"
-    fi
-done
-
-run rm -rf etc.new
+    done
 
+    touch "etc/netdata/.installer-cleanup-of-stock-configs-done"
+fi
 
 # -----------------------------------------------------------------------------
 progress "Add user netdata to required user groups"
@@ -165,6 +153,26 @@ dir_should_be_link . var/lib/netdata       netdata-dbs
 dir_should_be_link . var/cache/netdata     netdata-metrics
 dir_should_be_link . var/log/netdata       netdata-logs
 
+dir_should_be_link etc/netdata ../../usr/lib/netdata/conf.d orig
+
+if [ ${deleted_stock_configs} -gt 0 ]
+then
+    dir_should_be_link etc/netdata ../../usr/lib/netdata/conf.d "000.-.USE.THE.orig.LINK.TO.COPY.AND.EDIT.STOCK.CONFIG.FILES"
+fi
+
+
+# -----------------------------------------------------------------------------
+
+progress "create user config directories"
+
+for x in "python.d" "charts.d" "node.d" "health.d" "statsd.d"
+do
+    if [ ! -d "etc/netdata/${x}" ]
+        then
+        run mkdir -p "etc/netdata/${x}" || exit 1
+    fi
+done
+
 
 # -----------------------------------------------------------------------------
 progress "fix permissions"
diff --git a/makeself/jobs/10-prepare-destination.install.sh b/makeself/jobs/10-prepare-destination.install.sh
index 58c8c25fd..019732636 100755
--- a/makeself/jobs/10-prepare-destination.install.sh
+++ b/makeself/jobs/10-prepare-destination.install.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 . $(dirname "${0}")/../functions.sh "${@}" || exit 1
 
diff --git a/makeself/jobs/50-bash-4.4.install.sh b/makeself/jobs/50-bash-4.4.18.install.sh
index 7868a1e76..000765825 100755
--- a/makeself/jobs/50-bash-4.4.install.sh
+++ b/makeself/jobs/50-bash-4.4.18.install.sh
@@ -1,14 +1,18 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 . $(dirname "${0}")/../functions.sh "${@}" || exit 1
 
-fetch "bash-4.4" "http://ftp.gnu.org/gnu/bash/bash-4.4.tar.gz"
+fetch "bash-4.4.18" "http://ftp.gnu.org/gnu/bash/bash-4.4.18.tar.gz"
 
 run ./configure \
 	--prefix=${NETDATA_INSTALL_PATH} \
+	--without-bash-malloc \
 	--enable-static-link \
+	--enable-net-redirections \
+	--enable-array-variables \
+	--disable-profiling \
 	--disable-nls \
-	--without-bash-malloc \
 #	--disable-rpath \
 #	--enable-alias \
 #	--enable-arith-for-command \
diff --git a/makeself/jobs/50-curl-7.53.1.install.sh b/makeself/jobs/50-curl-7.60.0.install.sh
index ea80f0d2c..2b5c8f139 100755
--- a/makeself/jobs/50-curl-7.53.1.install.sh
+++ b/makeself/jobs/50-curl-7.60.0.install.sh
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 . $(dirname "${0}")/../functions.sh "${@}" || exit 1
 
-fetch "curl-curl-7_53_1" "https://github.com/curl/curl/archive/curl-7_53_1.tar.gz"
+fetch "curl-curl-7_60_0" "https://github.com/curl/curl/archive/curl-7_60_0.tar.gz"
 
 export LDFLAGS="-static"
 export PKG_CONFIG="pkg-config --static"
diff --git a/makeself/jobs/50-fping-4.0.install.sh b/makeself/jobs/50-fping-4.0.install.sh
index 2e22ebf8d..7928f1aa4 100755
--- a/makeself/jobs/50-fping-4.0.install.sh
+++ b/makeself/jobs/50-fping-4.0.install.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 . $(dirname "${0}")/../functions.sh "${@}" || exit 1
 
diff --git a/makeself/jobs/70-netdata-git.install.sh b/makeself/jobs/70-netdata-git.install.sh
index fea3a88bd..71ea0f63a 100755
--- a/makeself/jobs/70-netdata-git.install.sh
+++ b/makeself/jobs/70-netdata-git.install.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 . ${NETDATA_MAKESELF_PATH}/functions.sh "${@}" || exit 1
 
@@ -12,13 +13,6 @@ else
 #    export CFLAGS="-static -O1 -ggdb -Wall -Wextra -Wformat-signedness"
 fi
 
-if [ ! -z "${NETDATA_INSTALL_PATH}" -a -d "${NETDATA_INSTALL_PATH}/etc" ]
-    then
-    # make sure we don't have an old etc path, so that the installer
-    # will install all files without examining changes
-    run mv "${NETDATA_INSTALL_PATH}/etc" "${NETDATA_INSTALL_PATH}/etc.new"
-fi
-
 run ./netdata-installer.sh --install "${NETDATA_INSTALL_PARENT}" \
     --dont-wait \
     --dont-start-it \
diff --git a/makeself/jobs/99-makeself.install.sh b/makeself/jobs/99-makeself.install.sh
index 698f2f92d..0e0d5c9da 100755
--- a/makeself/jobs/99-makeself.install.sh
+++ b/makeself/jobs/99-makeself.install.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 . $(dirname "${0}")/../functions.sh "${@}" || exit 1
 
@@ -12,18 +13,18 @@ ORIGIN="$(git config --get remote.origin.url || echo "unknown")"
 if [[ "${ORIGIN}" =~ ^git@github.com:.*/netdata.*$ ]]
     then
     NOWNER="${ORIGIN/git@github.com:/}"
-    NOWNER="${NOWNER/\/netdata*/}"
+    NOWNER="$( echo ${NOWNER} | cut -d '/' -f 1 )"
 
 elif [[ "${ORIGIN}" =~ ^https://github.com/.*/netdata.*$ ]]
     then
     NOWNER="${ORIGIN/https:\/\/github.com\//}"
-    NOWNER="${NOWNER/\/netdata*/}"
+    NOWNER="$( echo ${NOWNER} | cut -d '/' -f 1 )"
 fi
 
 # make sure it does not have any slashes in it
 NOWNER="${NOWNER//\//_}"
 
-if [ "${NOWNER}" = "firehol" ]
+if [ "${NOWNER}" = "netdata" ]
     then
     NOWNER=
 else
@@ -64,6 +65,7 @@ run mv "${NETDATA_INSTALL_PATH}/bin/netdata" \
 
 cat >"${NETDATA_INSTALL_PATH}/bin/netdata" <<EOF
 #!${NETDATA_INSTALL_PATH}/bin/bash
+export NETDATA_BASH_LOADABLES="DISABLE"
 export PATH="${NETDATA_INSTALL_PATH}/bin:\${PATH}"
 exec "${NETDATA_INSTALL_PATH}/bin/srv/netdata" "\${@}"
 EOF
@@ -71,27 +73,6 @@ run chmod 755 "${NETDATA_INSTALL_PATH}/bin/netdata"
 
 
 # -----------------------------------------------------------------------------
-# move etc to protect the destination when unpacked
-
-if [ ! -z "${NETDATA_INSTALL_PATH}" -a -d "${NETDATA_INSTALL_PATH}/etc" ]
-    then
-    if [ -d "${NETDATA_INSTALL_PATH}/etc.new" ]
-        then
-        run rm -rf "${NETDATA_INSTALL_PATH}/etc.new" || exit 1
-    fi
-
-    run mv "${NETDATA_INSTALL_PATH}/etc" \
-        "${NETDATA_INSTALL_PATH}/etc.new" || exit 1
-
-    if [ -f "${NETDATA_INSTALL_PATH}/etc.new/netdata/netdata.conf" ]
-        then
-        # delete the generated netdata.conf, so that the static installer will generate a new one
-        run rm "${NETDATA_INSTALL_PATH}/etc.new/netdata/netdata.conf"
-    fi
-fi
-
-
-# -----------------------------------------------------------------------------
 # remove the links to allow untaring the archive
 
 run rm "${NETDATA_INSTALL_PATH}/sbin" \
diff --git a/makeself/makeself-header.sh b/makeself/makeself-header.sh
index 83131a17c..19c1c3f99 100755
--- a/makeself/makeself-header.sh
+++ b/makeself/makeself-header.sh
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 cat << EOF  > "$archname"
 #!/bin/sh
 # This script was generated using Makeself $MS_VERSION
diff --git a/makeself/makeself-help-header.txt b/makeself/makeself-help-header.txt
index e26490059..6e9e96237 100644
--- a/makeself/makeself-help-header.txt
+++ b/makeself/makeself-help-header.txt
@@ -26,7 +26,7 @@
   # SYSTEM INIT
   This file will be installed if this system runs with systemd:
 
-   - /etc/systemd/system/netdata.service 
+   - /lib/systemd/system/netdata.service
 
    or, for older Centos, Debian/Ubuntu or OpenRC Gentoo:
 
@@ -41,6 +41,6 @@
 
   netdata re-distributes a lot of open source software components.
   Check its full license at:
-  https://github.com/firehol/netdata/blob/master/LICENSE.md
+  https://github.com/netdata/netdata/blob/master/LICENSE.md
 
 
diff --git a/makeself/makeself-license.txt b/makeself/makeself-license.txt
index e26490059..6e9e96237 100644
--- a/makeself/makeself-license.txt
+++ b/makeself/makeself-license.txt
@@ -26,7 +26,7 @@
   # SYSTEM INIT
   This file will be installed if this system runs with systemd:
 
-   - /etc/systemd/system/netdata.service 
+   - /lib/systemd/system/netdata.service
 
    or, for older Centos, Debian/Ubuntu or OpenRC Gentoo:
 
@@ -41,6 +41,6 @@
 
   netdata re-distributes a lot of open source software components.
   Check its full license at:
-  https://github.com/firehol/netdata/blob/master/LICENSE.md
+  https://github.com/netdata/netdata/blob/master/LICENSE.md
 
 
diff --git a/makeself/makeself.sh b/makeself/makeself.sh
index 2ce37a24f..ee89df9a4 100755
--- a/makeself/makeself.sh
+++ b/makeself/makeself.sh
@@ -1,4 +1,5 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 # Makeself version 2.3.x
 #  by Stephane Peter <megastep@megastep.org>
diff --git a/makeself/post-installer.sh b/makeself/post-installer.sh
index 10f9863b9..38cc41ef7 100755
--- a/makeself/post-installer.sh
+++ b/makeself/post-installer.sh
@@ -1,4 +1,5 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # This script is started using the shell of the system
 # and executes our 'install-or-update.sh' script
diff --git a/makeself/run-all-jobs.sh b/makeself/run-all-jobs.sh
index 2ad594380..7a35fe648 100755
--- a/makeself/run-all-jobs.sh
+++ b/makeself/run-all-jobs.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 LC_ALL=C
 umask 002
diff --git a/netdata-installer.sh b/netdata-installer.sh
index e433cc189..3ca8ad320 100755
--- a/netdata-installer.sh
+++ b/netdata-installer.sh
@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
+# shellcheck disable=SC1090,SC1091,SC1117,SC2002,SC2034,SC2044,SC2046,SC2086,SC2129,SC2162,SC2166,SC2181
 
 export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin"
 uniquepath() {
@@ -79,7 +81,9 @@ REINSTALL_COMMAND="$(printf "%q " "$0" "${@}"; printf "\n")"
 # remove options that shown not be inherited by netdata-updater.sh
 REINSTALL_COMMAND="${REINSTALL_COMMAND// --dont-wait/}"
 REINSTALL_COMMAND="${REINSTALL_COMMAND// --dont-start-it/}"
+[ "${REINSTALL_COMMAND:0:1}" != "." -a "${REINSTALL_COMMAND:0:1}" != "/" -a -f "./${0}" ] && REINSTALL_COMMAND="./${REINSTALL_COMMAND}"
 
+# shellcheck disable=SC2230
 setcap="$(which setcap 2>/dev/null || command -v setcap 2>/dev/null)"
 
 ME="$0"
@@ -137,6 +141,11 @@ Valid <installer options> are:
         Enable/disable Link-Time-Optimization
         Default: enabled
 
+   --disable-x86-sse
+
+        Disable SSE instructions
+        Default: enabled
+
    --zlib-is-really-here
    --libs-are-really-here
 
@@ -164,48 +173,6 @@ For the plugins, you will at least need:
 USAGE
 }
 
-md5sum="$(which md5sum 2>/dev/null || command -v md5sum 2>/dev/null || command -v md5 2>/dev/null)"
-get_git_config_signatures() {
-    local x s file md5
-
-    [ ! -d "conf.d" ] && echo >&2 "Wrong directory." && return 1
-    [ -z "${md5sum}" -o ! -x "${md5sum}" ] && echo >&2 "No md5sum command." && return 1
-
-    echo >configs.signatures.tmp
-
-    for x in $(find conf.d -name \*.conf)
-    do
-            x="${x/conf.d\//}"
-            echo "${x}"
-            for c in $(git log --follow "conf.d/${x}" | grep ^commit | cut -d ' ' -f 2)
-            do
-                    git checkout ${c} "conf.d/${x}" || continue
-                    s="$(cat "conf.d/${x}" | ${md5sum} | cut -d ' ' -f 1)"
-                    echo >>configs.signatures.tmp "${s}:${x}"
-                    echo "    ${s}"
-            done
-            git checkout HEAD "conf.d/${x}" || break
-    done
-
-    cat configs.signatures.tmp |\
-        grep -v "^$" |\
-        sort -u |\
-        {
-            echo "declare -A configs_signatures=("
-            IFS=":"
-            while read md5 file
-            do
-                echo "  ['${md5}']='${file}'"
-            done
-            echo ")"
-        } >configs.signatures
-
-    rm configs.signatures.tmp
-
-    return 0
-}
-
-
 while [ ! -z "${1}" ]
 do
     if [ "$1" = "--install" ]
@@ -252,14 +219,14 @@ do
         then
         NETDATA_CONFIGURE_OPTIONS="${NETDATA_CONFIGURE_OPTIONS//--disable-lto/} --disable-lto"
         shift 1
+    elif [ "$1" = "--disable-x86-sse" ]
+        then
+        NETDATA_CONFIGURE_OPTIONS="${NETDATA_CONFIGURE_OPTIONS//--disable-x86-sse/} --disable-x86-sse"
+        shift 1
     elif [ "$1" = "--help" -o "$1" = "-h" ]
         then
         usage
         exit 1
-    elif [ "$1" = "get_git_config_signatures" ]
-        then
-        get_git_config_signatures && exit 0
-        exit 1
     else
         echo >&2
         echo >&2 "ERROR:"
@@ -387,15 +354,6 @@ autotools 2.60 or later is required
 Sorry, you do not seem to have autotools 2.60 or later, which is
 required to build from the git sources of netdata.
 
-You can either install a suitable version of autotools and automake
-or download a netdata package which does not have these dependencies.
-
-Source packages where autotools have already been run are available
-here:
-       https://firehol.org/download/netdata/
-
-The unsigned/master folder tracks the head of the git tree and released
-packages are also available.
 EOF
         exit 1
     fi
@@ -441,7 +399,7 @@ You may need to check these:
 
 If you still cannot get it to build, ask for help at github:
 
-   https://github.com/firehol/netdata/issues
+   https://github.com/netdata/netdata/issues
 
 
 EOF
@@ -468,7 +426,7 @@ progress "Run autotools to configure the build environment"
 
 if [ "$have_autotools" ]
 then
-    run ./autogen.sh || exit 1
+    run autoreconf -ivf || exit 1
 fi
 
 run ./configure \
@@ -489,6 +447,7 @@ progress "Cleanup compilation directory"
 
 [ -f src/netdata ] && run make clean
 
+
 # -----------------------------------------------------------------------------
 progress "Compile netdata"
 
@@ -540,79 +499,79 @@ if [ -d "${NETDATA_PREFIX}/etc/netdata" ]
 fi
 
 # -----------------------------------------------------------------------------
-progress "Backup existing netdata configuration before installing it"
 
-if [ "${BASH_VERSINFO[0]}" -ge "4" ]
+# shellcheck disable=SC2230
+md5sum="$(which md5sum 2>/dev/null || command -v md5sum 2>/dev/null || command -v md5 2>/dev/null)"
+
+deleted_stock_configs=0
+if [ ! -f "${NETDATA_PREFIX}/etc/netdata/.installer-cleanup-of-stock-configs-done" ]
 then
-    declare -A configs_signatures=()
-    if [ -f "configs.signatures" ]
-        then
-        source "configs.signatures" || echo >&2 "ERROR: Failed to load configs.signatures !"
-    fi
-fi
 
-config_signature_matches() {
-    local md5="${1}" file="${2}"
+    progress "Backup existing netdata configuration before installing it"
 
     if [ "${BASH_VERSINFO[0]}" -ge "4" ]
-        then
-        [ "${configs_signatures[${md5}]}" = "${file}" ] && return 0
-        return 1
+    then
+        declare -A configs_signatures=()
+        if [ -f "configs.signatures" ]
+            then
+            source "configs.signatures" || echo >&2 "ERROR: Failed to load configs.signatures !"
+        fi
     fi
 
-    if [ -f "configs.signatures" ]
-        then
-        grep "\['${md5}'\]='${file}'" "configs.signatures" >/dev/null
-        return $?
-    fi
+    config_signature_matches() {
+        local md5="${1}" file="${2}"
 
-    return 1
-}
+        if [ "${BASH_VERSINFO[0]}" -ge "4" ]
+            then
+            [ "${configs_signatures[${md5}]}" = "${file}" ] && return 0
+            return 1
+        fi
 
-# backup user configurations
-installer_backup_suffix="${PID}.${RANDOM}"
-for x in $(find -L "${NETDATA_PREFIX}/etc/netdata" -name '*.conf' -type f)
-do
-    if [ -f "${x}" ]
-        then
-        # make a backup of the configuration file
-        cp -p "${x}" "${x}.old"
+        if [ -f "configs.signatures" ]
+            then
+            grep "\['${md5}'\]='${file}'" "configs.signatures" >/dev/null
+            return $?
+        fi
 
-        if [ -z "${md5sum}" -o ! -x "${md5sum}" ]
+        return 1
+    }
+
+    # clean up stock config files from the user configuration directory
+    for x in $(find -L "${NETDATA_PREFIX}/etc/netdata" -type f)
+    do
+        if [ -f "${x}" ]
             then
-            # we don't have md5sum - keep it
-            echo >&2 "File '${TPUT_CYAN}${x}${TPUT_RESET}' ${TPUT_RET}is not known to distribution${TPUT_RESET}. Keeping it."
-            run cp -a "${x}" "${x}.installer_backup.${installer_backup_suffix}"
-        else
             # find it relative filename
-            f="${x/*\/etc\/netdata\//}"
+            f="${x/${NETDATA_PREFIX}\/etc\/netdata\//}"
 
-            # find its checksum
-            md5="$(cat "${x}" | ${md5sum} | cut -d ' ' -f 1)"
+            # find the stock filename
+            t="${f/.conf.installer_backup.*/.conf}"
+            t="${t/.conf.old/.conf}"
+            t="${t/.conf.orig/.conf}"
 
-            # copy the original
-            if [ -f "conf.d/${f}" ]
+            if [ -z "${md5sum}" -o ! -x "${md5sum}" ]
                 then
-                cp "conf.d/${f}" "${x}.orig"
-            fi
-
-            if config_signature_matches "${md5}" "${f}"
-                then
-                # it is a stock version - don't keep it
-                echo >&2 "File '${TPUT_CYAN}${x}${TPUT_RESET}' is stock version."
+                # we don't have md5sum - keep it
+                echo >&2 "File '${TPUT_CYAN}${x}${TPUT_RESET}' ${TPUT_RET}is not known to distribution${TPUT_RESET}. Keeping it."
             else
-                # edited by user - keep it
-                echo >&2 "File '${TPUT_CYAN}${x}${TPUT_RESET}' ${TPUT_RED} has been edited by user${TPUT_RESET}. Keeping it."
-                run cp -a "${x}" "${x}.installer_backup.${installer_backup_suffix}"
+                # find its checksum
+                md5="$(${md5sum} <"${x}" | cut -d ' ' -f 1)"
+
+                if config_signature_matches "${md5}" "${t}"
+                    then
+                    # it is a stock version - remove it
+                    echo >&2 "File '${TPUT_CYAN}${x}${TPUT_RESET}' is stock version of '${t}'."
+                    run rm -f "${x}"
+                    deleted_stock_configs=$(( deleted_stock_configs + 1 ))
+                else
+                    # edited by user - keep it
+                    echo >&2 "File '${TPUT_CYAN}${x}${TPUT_RESET}' ${TPUT_RED} does not match stock of '${t}'${TPUT_RESET}. Keeping it."
+                fi
             fi
         fi
-
-    elif [ -f "${x}.installer_backup.${installer_backup_suffix}" ]
-        then
-        rm -f "${x}.installer_backup.${installer_backup_suffix}"
-    fi
-done
-
+    done
+fi
+touch "${NETDATA_PREFIX}/etc/netdata/.installer-cleanup-of-stock-configs-done"
 
 # -----------------------------------------------------------------------------
 progress "Install netdata"
@@ -621,19 +580,6 @@ run make install || exit 1
 
 
 # -----------------------------------------------------------------------------
-progress "Restore user edited netdata configuration files"
-
-for x in $(find -L "${NETDATA_PREFIX}/etc/netdata/" -name '*.conf' -type f)
-do
-    if [ -f "${x}.installer_backup.${installer_backup_suffix}" ]
-        then
-        run cp -a "${x}.installer_backup.${installer_backup_suffix}" "${x}" && \
-            run rm -f "${x}.installer_backup.${installer_backup_suffix}"
-    fi
-done
-
-
-# -----------------------------------------------------------------------------
 progress "Fix generated files permissions"
 
 run find ./system/ -type f -a \! -name \*.in -a \! -name Makefile\* -a \! -name \*.conf -a \! -name \*.service -a \! -name \*.logrotate -exec chmod 755 {} \;
@@ -679,22 +625,23 @@ config_option() {
 if [ "${UID}" = "0" ]
     then
     NETDATA_USER="$( config_option "global" "run as user" "netdata" )"
-    NETDATA_GROUP="${NETDATA_USER}"
     ROOT_USER="root"
 else
     NETDATA_USER="${USER}"
-    NETDATA_GROUP="$(id -g -n ${NETDATA_USER})"
     ROOT_USER="${NETDATA_USER}"
 fi
+NETDATA_GROUP="$(id -g -n ${NETDATA_USER})"
+[ -z "${NETDATA_GROUP}" ] && NETDATA_GROUP="${NETDATA_USER}"
 
 # the owners of the web files
 NETDATA_WEB_USER="$(  config_option "web" "web files owner" "${NETDATA_USER}" )"
+NETDATA_WEB_GROUP="${NETDATA_GROUP}"
 if [ "${UID}" = "0" -a "${NETDATA_USER}" != "${NETDATA_WEB_USER}" ]
 then
-    NETDATA_GROUP="$(id -g -n ${NETDATA_WEB_USER})"
-    [ -z "${NETDATA_GROUP}" ] && NETDATA_GROUP="${NETDATA_WEB_USER}"
+    NETDATA_WEB_GROUP="$(id -g -n ${NETDATA_WEB_USER})"
+    [ -z "${NETDATA_WEB_GROUP}" ] && NETDATA_WEB_GROUP="${NETDATA_WEB_USER}"
 fi
-NETDATA_WEB_GROUP="$( config_option "web" "web files group" "${NETDATA_GROUP}" )"
+NETDATA_WEB_GROUP="$( config_option "web" "web files group" "${NETDATA_WEB_GROUP}" )"
 
 # port
 defport=19999
@@ -705,28 +652,30 @@ NETDATA_LIB_DIR="$( config_option "global" "lib directory" "${NETDATA_PREFIX}/va
 NETDATA_CACHE_DIR="$( config_option "global" "cache directory" "${NETDATA_PREFIX}/var/cache/netdata" )"
 NETDATA_WEB_DIR="$( config_option "global" "web files directory" "${NETDATA_PREFIX}/usr/share/netdata/web" )"
 NETDATA_LOG_DIR="$( config_option "global" "log directory" "${NETDATA_PREFIX}/var/log/netdata" )"
-NETDATA_CONF_DIR="$( config_option "global" "config directory" "${NETDATA_PREFIX}/etc/netdata" )"
+NETDATA_USER_CONFIG_DIR="$( config_option "global" "config directory" "${NETDATA_PREFIX}/etc/netdata" )"
+NETDATA_STOCK_CONFIG_DIR="$( config_option "global" "stock config directory" "${NETDATA_PREFIX}/usr/lib/netdata/conf.d" )"
 NETDATA_RUN_DIR="${NETDATA_PREFIX}/var/run"
 
 cat <<OPTIONSEOF
 
     Permissions
-    - netdata user     : ${NETDATA_USER}
-    - netdata group    : ${NETDATA_GROUP}
-    - web files user   : ${NETDATA_WEB_USER}
-    - web files group  : ${NETDATA_WEB_GROUP}
-    - root user        : ${ROOT_USER}
+    - netdata user             : ${NETDATA_USER}
+    - netdata group            : ${NETDATA_GROUP}
+    - web files user           : ${NETDATA_WEB_USER}
+    - web files group          : ${NETDATA_WEB_GROUP}
+    - root user                : ${ROOT_USER}
 
     Directories
-    - netdata conf dir : ${NETDATA_CONF_DIR}
-    - netdata log dir  : ${NETDATA_LOG_DIR}
-    - netdata run dir  : ${NETDATA_RUN_DIR}
-    - netdata lib dir  : ${NETDATA_LIB_DIR}
-    - netdata web dir  : ${NETDATA_WEB_DIR}
-    - netdata cache dir: ${NETDATA_CACHE_DIR}
+    - netdata user config dir  : ${NETDATA_USER_CONFIG_DIR}
+    - netdata stock config dir : ${NETDATA_STOCK_CONFIG_DIR}
+    - netdata log dir          : ${NETDATA_LOG_DIR}
+    - netdata run dir          : ${NETDATA_RUN_DIR}
+    - netdata lib dir          : ${NETDATA_LIB_DIR}
+    - netdata web dir          : ${NETDATA_WEB_DIR}
+    - netdata cache dir        : ${NETDATA_CACHE_DIR}
 
     Other
-    - netdata port     : ${NETDATA_PORT}
+    - netdata port             : ${NETDATA_PORT}
 
 OPTIONSEOF
 
@@ -741,17 +690,36 @@ fi
 
 # --- conf dir ----
 
-for x in "python.d" "charts.d" "node.d"
+for x in "python.d" "charts.d" "node.d" "health.d" "statsd.d"
 do
-    if [ ! -d "${NETDATA_CONF_DIR}/${x}" ]
+    if [ ! -d "${NETDATA_USER_CONFIG_DIR}/${x}" ]
         then
-        echo >&2 "Creating directory '${NETDATA_CONF_DIR}/${x}'"
-        run mkdir -p "${NETDATA_CONF_DIR}/${x}" || exit 1
+        echo >&2 "Creating directory '${NETDATA_USER_CONFIG_DIR}/${x}'"
+        run mkdir -p "${NETDATA_USER_CONFIG_DIR}/${x}" || exit 1
     fi
 done
-run chown -R "${ROOT_USER}:${NETDATA_GROUP}" "${NETDATA_CONF_DIR}"
-run find "${NETDATA_CONF_DIR}" -type f -exec chmod 0640 {} \;
-run find "${NETDATA_CONF_DIR}" -type d -exec chmod 0755 {} \;
+run chown -R "${ROOT_USER}:${NETDATA_GROUP}" "${NETDATA_USER_CONFIG_DIR}"
+run find "${NETDATA_USER_CONFIG_DIR}" -type f -exec chmod 0640 {} \;
+run find "${NETDATA_USER_CONFIG_DIR}" -type d -exec chmod 0755 {} \;
+run chmod 755 "${NETDATA_USER_CONFIG_DIR}/edit-config"
+
+# --- stock conf dir ----
+
+[ ! -d "${NETDATA_STOCK_CONFIG_DIR}" ] && mkdir -p "${NETDATA_STOCK_CONFIG_DIR}"
+
+helplink="000.-.USE.THE.orig.LINK.TO.COPY.AND.EDIT.STOCK.CONFIG.FILES"
+[ ${deleted_stock_configs} -eq 0 ] && helplink=""
+for link in "orig" "${helplink}"
+do
+    if [ ! -z "${link}" ]
+    then
+        [ -L "${NETDATA_USER_CONFIG_DIR}/${link}" ] && run rm -f "${NETDATA_USER_CONFIG_DIR}/${link}"
+        run ln -s "${NETDATA_STOCK_CONFIG_DIR}" "${NETDATA_USER_CONFIG_DIR}/${link}"
+    fi
+done
+run chown -R "${ROOT_USER}:${NETDATA_GROUP}" "${NETDATA_STOCK_CONFIG_DIR}"
+run find "${NETDATA_STOCK_CONFIG_DIR}" -type f -exec chmod 0640 {} \;
+run find "${NETDATA_STOCK_CONFIG_DIR}" -type d -exec chmod 0755 {} \;
 
 # --- web dir ----
 
@@ -950,7 +918,7 @@ fi
 # -----------------------------------------------------------------------------
 progress "Check version.txt"
 
-if [ ! -s web/version.txt ]
+if [ ! -s webserver/gui/version.txt ]
     then
     cat <<VERMSG
 
@@ -962,7 +930,7 @@ Update check on the dashboard, will not work.
 If you want to have version update check, please re-install it
 following the procedure in:
 
-https://github.com/firehol/netdata/wiki/Installation
+https://github.com/netdata/netdata/wiki/Installation
 
 VERMSG
 fi
@@ -990,8 +958,8 @@ To run apps.plugin with escalated capabilities:
 
 or, to run apps.plugin as root:
 
-    ${TPUT_YELLOW}${TPUT_BOLD}sudo chown root \"${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin\"${TPUT_RESET}
-    ${TPUT_YELLOW}${TPUT_BOLD}sudo chmod 4755 \"${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin\"${TPUT_RESET}
+    ${TPUT_YELLOW}${TPUT_BOLD}sudo chown root:${NETDATA_GROUP} \"${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin\"${TPUT_RESET}
+    ${TPUT_YELLOW}${TPUT_BOLD}sudo chmod 4750 \"${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin\"${TPUT_RESET}
 
 apps.plugin is performing a hard-coded function of data collection for all
 running processes. It cannot be instructed from the netdata daemon to perform
@@ -1016,24 +984,17 @@ if [ "\$1" != "--force" ]
     exit 1
 fi
 
+source installer/functions.sh || exit 1
+
 echo >&2 "Stopping a possibly running netdata..."
-for p in \$(pidof netdata); do kill \$p; done
+for p in \$(pidof netdata); do run kill \$p; done
 sleep 2
 
-deletedir() {
-    if [ ! -z "\$1" -a -d "\$1" ]
-        then
-        echo
-        echo "Deleting directory '\$1' ..."
-        rm -I -R "\$1"
-    fi
-}
-
 if [ ! -z "${NETDATA_PREFIX}" -a -d "${NETDATA_PREFIX}" ]
     then
     # installation prefix was given
 
-    deletedir "${NETDATA_PREFIX}"
+    portable_deletedir_recursively_interactively "${NETDATA_PREFIX}"
 
 else
     # installation prefix was NOT given
@@ -1041,49 +1002,55 @@ else
     if [ -f "${NETDATA_PREFIX}/usr/sbin/netdata" ]
         then
         echo "Deleting ${NETDATA_PREFIX}/usr/sbin/netdata ..."
-        rm -i "${NETDATA_PREFIX}/usr/sbin/netdata"
+        run rm -i "${NETDATA_PREFIX}/usr/sbin/netdata"
     fi
 
-    deletedir "${NETDATA_PREFIX}/etc/netdata"
-    deletedir "${NETDATA_PREFIX}/usr/share/netdata"
-    deletedir "${NETDATA_PREFIX}/usr/libexec/netdata"
-    deletedir "${NETDATA_PREFIX}/var/lib/netdata"
-    deletedir "${NETDATA_PREFIX}/var/cache/netdata"
-    deletedir "${NETDATA_PREFIX}/var/log/netdata"
+    portable_deletedir_recursively_interactively "${NETDATA_PREFIX}/etc/netdata"
+    portable_deletedir_recursively_interactively "${NETDATA_PREFIX}/usr/share/netdata"
+    portable_deletedir_recursively_interactively "${NETDATA_PREFIX}/usr/libexec/netdata"
+    portable_deletedir_recursively_interactively "${NETDATA_PREFIX}/var/lib/netdata"
+    portable_deletedir_recursively_interactively "${NETDATA_PREFIX}/var/cache/netdata"
+    portable_deletedir_recursively_interactively "${NETDATA_PREFIX}/var/log/netdata"
 fi
 
 if [ -f /etc/logrotate.d/netdata ]
     then
     echo "Deleting /etc/logrotate.d/netdata ..."
-    rm -i /etc/logrotate.d/netdata
+    run rm -i /etc/logrotate.d/netdata
 fi
 
 if [ -f /etc/systemd/system/netdata.service ]
     then
     echo "Deleting /etc/systemd/system/netdata.service ..."
-    rm -i /etc/systemd/system/netdata.service
+    run rm -i /etc/systemd/system/netdata.service
+fi
+
+if [ -f /lib/systemd/system/netdata.service ]
+    then
+    echo "Deleting /lib/systemd/system/netdata.service ..."
+    run rm -i /lib/systemd/system/netdata.service
 fi
 
 if [ -f /etc/init.d/netdata ]
     then
     echo "Deleting /etc/init.d/netdata ..."
-    rm -i /etc/init.d/netdata
+    run rm -i /etc/init.d/netdata
 fi
 
 if [ -f /etc/periodic/daily/netdata-updater ]
     then
     echo "Deleting /etc/periodic/daily/netdata-updater ..."
-    rm -i /etc/periodic/daily/netdata-updater
+    run rm -i /etc/periodic/daily/netdata-updater
 fi
 
 if [ -f /etc/cron.daily/netdata-updater ]
     then
     echo "Deleting /etc/cron.daily/netdata-updater ..."
-    rm -i /etc/cron.daily/netdata-updater
+    run rm -i /etc/cron.daily/netdata-updater
 fi
 
-getent passwd netdata > /dev/null
-if [ $? -eq 0 ]
+portable_check_user_exists netdata
+if [ \$? -eq 0 ]
     then
     echo
     echo "You may also want to remove the user netdata"
@@ -1091,8 +1058,8 @@ if [ $? -eq 0 ]
     echo "   userdel netdata"
 fi
 
-getent group netdata > /dev/null
-if [ $? -eq 0 ]
+portable_check_group_exists netdata > /dev/null
+if [ \$? -eq 0 ]
     then
     echo
     echo "You may also want to remove the group netdata"
@@ -1100,86 +1067,17 @@ if [ $? -eq 0 ]
     echo "   groupdel netdata"
 fi
 
-getent group docker > /dev/null
-if [ $? -eq 0 -a "${NETDATA_ADDED_TO_DOCKER}" = "1" ]
-    then
-    echo
-    echo "You may also want to remove the netdata user from the docker group"
-    echo "by running:"
-    echo "   gpasswd -d netdata docker"
-fi
-
-getent group nginx > /dev/null
-if [ $? -eq 0 -a "${NETDATA_ADDED_TO_NGINX}" = "1" ]
-    then
-    echo
-    echo "You may also want to remove the netdata user from the nginx group"
-    echo "by running:"
-    echo "   gpasswd -d netdata nginx"
-fi
-
-getent group varnish > /dev/null
-if [ $? -eq 0 -a "${NETDATA_ADDED_TO_VARNISH}" = "1" ]
-    then
-    echo
-    echo "You may also want to remove the netdata user from the varnish group"
-    echo "by running:"
-    echo "   gpasswd -d netdata varnish"
-fi
-
-getent group haproxy > /dev/null
-if [ $? -eq 0 -a "${NETDATA_ADDED_TO_HAPROXY}" = "1" ]
-    then
-    echo
-    echo "You may also want to remove the netdata user from the haproxy group"
-    echo "by running:"
-    echo "   gpasswd -d netdata haproxy"
-fi
-
-getent group adm > /dev/null
-if [ $? -eq 0 -a "${NETDATA_ADDED_TO_ADM}" = "1" ]
-    then
-    echo
-    echo "You may also want to remove the netdata user from the adm group"
-    echo "by running:"
-    echo "   gpasswd -d netdata adm"
-fi
-
-getent group nsd > /dev/null
-if [ $? -eq 0 -a "${NETDATA_ADDED_TO_NSD}" = "1" ]
-    then
-    echo
-    echo "You may also want to remove the netdata user from the nsd group"
-    echo "by running:"
-    echo "   gpasswd -d netdata nsd"
-fi
-
-getent group proxy > /dev/null
-if [ $? -eq 0 -a "${NETDATA_ADDED_TO_PROXY}" = "1" ]
-    then
-    echo
-    echo "You may also want to remove the netdata user from the proxy group"
-    echo "by running:"
-    echo "   gpasswd -d netdata proxy"
-fi
-
-getent group squid > /dev/null
-if [ $? -eq 0 -a "${NETDATA_ADDED_TO_SQUID}" = "1" ]
-    then
-    echo
-    echo "You may also want to remove the netdata user from the squid group"
-    echo "by running:"
-    echo "   gpasswd -d netdata squid"
-fi
-
-getent group ceph > /dev/null
-if [ $? -eq 0 -a "${NETDATA_ADDED_TO_CEPH}" = "1" ]
-    then
-    echo
-    echo "You may also want to remove the netdata user from the squid group"
-    echo "by running:"
-    echo "   gpasswd -d netdata ceph"
-fi
+for g in ${NETDATA_ADDED_TO_GROUPS}
+do
+    portable_check_group_exists \$g > /dev/null
+    if [ \$? -eq 0 ]
+        then
+        echo
+        echo "You may also want to remove the netdata user from the \$g group"
+        echo "by running:"
+        echo "   gpasswd -d netdata \$g"
+    fi
+done
 
 UNINSTALL
 chmod 750 netdata-uninstaller.sh
@@ -1351,16 +1249,16 @@ REINSTALL
                 if [ "${AUTOUPDATE}" = "1" ]
                 then
                     progress "Installing netdata-updater at cron"
-                    run ln -s "${PWD}/netdata-updater.sh" "${crondir}/netdata-updater"
+                    run ln -fs "${PWD}/netdata-updater.sh" "${crondir}/netdata-updater"
                 else
                     echo >&2 "${TPUT_DIM}Run this to automatically check and install netdata updates once per day:${TPUT_RESET}"
                     echo >&2
-                    echo >&2 "${TPUT_YELLOW}${TPUT_BOLD}sudo ln -s ${PWD}/netdata-updater.sh ${crondir}/netdata-updater${TPUT_RESET}"
+                    echo >&2 "${TPUT_YELLOW}${TPUT_BOLD}sudo ln -fs ${PWD}/netdata-updater.sh ${crondir}/netdata-updater${TPUT_RESET}"
                 fi
             else
                 progress "Refreshing netdata-updater at cron"
                 run rm "${crondir}/netdata-updater"
-                run ln -s "${PWD}/netdata-updater.sh" "${crondir}/netdata-updater"
+                run ln -fs "${PWD}/netdata-updater.sh" "${crondir}/netdata-updater"
             fi
         else
             [ "${AUTOUPDATE}" = "1" ] && echo >&2 "Cannot figure out the cron directory to install netdata-updater."
diff --git a/netdata.cppcheck b/netdata.cppcheck
index 49bb443ba..245c7a005 100644
--- a/netdata.cppcheck
+++ b/netdata.cppcheck
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="1">
-    <root name="/home/costa/src/netdata-ktsaou.git/src"/>
     <builddir>cppcheck-build</builddir>
     <includedir>
         <dir name=".."/>
diff --git a/netdata.spec b/netdata.spec
index 98ba99c75..544a23f85 100644
--- a/netdata.spec
+++ b/netdata.spec
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 %global contentdir %{_datadir}/netdata
 
 # This is temporary and should eventually be resolved. This bypasses
@@ -80,11 +81,11 @@ Recommends:	python2-psycopg2 \
 
 Summary:	Real-time performance monitoring, done right
 Name:		netdata
-Version:	1.10.0
+Version:	1.10.1
 Release:	1%{?dist}
 License:	GPLv3+
 Group:		Applications/System
-Source0:	https://github.com/firehol/%{name}/releases/download/v1.10.0/%{name}-1.10.0.tar.xz
+Source0:	https://github.com/netdata/%{name}/releases/download/v1.11.0_rolling/%{name}-1.11.0_rolling.tar.gz
 URL:		http://my-netdata.io
 BuildRequires:	pkgconfig
 BuildRequires:	xz
@@ -125,7 +126,7 @@ so that you can get insights of what is happening now and what just
 happened, on your systems and applications.
 
 %prep
-%setup -q -n netdata-1.10.0
+%setup -q -n netdata-1.11.0_rolling
 
 %build
 %configure \
@@ -180,19 +181,20 @@ rm -rf "${RPM_BUILD_ROOT}"
 %defattr(-,root,root)
 
 %dir %{_sysconfdir}/%{name}
+%dir %{_libdir}/%{name}
 
-%config(noreplace) %{_sysconfdir}/%{name}/*.conf
-%config(noreplace) %{_sysconfdir}/%{name}/charts.d/*.conf
-%config(noreplace) %{_sysconfdir}/%{name}/health.d/*.conf
-#%%config(noreplace) %{_sysconfdir}/%{name}/node.d/*.conf
-%config(noreplace) %{_sysconfdir}/%{name}/python.d/*.conf
-%config(noreplace) %{_sysconfdir}/%{name}/statsd.d/*.conf
-%config(noreplace) %{_sysconfdir}/logrotate.d/%{name}
+%config %{_sysconfdir}/%{name}/*.conf
+#%config %{_sysconfdir}/%{name}/charts.d/*.conf
+#%config %{_sysconfdir}/%{name}/health.d/*.conf
+#%config %{_sysconfdir}/%{name}/node.d/*.conf
+#%config %{_sysconfdir}/%{name}/python.d/*.conf
+#%config %{_sysconfdir}/%{name}/statsd.d/*.conf
+%config %{_sysconfdir}/logrotate.d/%{name}
 
-# To be eventually moved to %%_defaultdocdir
-%{_sysconfdir}/%{name}/node.d/*.md
+%{_libdir}/%{name}
 %{_libexecdir}/%{name}
 %{_sbindir}/%{name}
+%{_sysconfdir}/%{name}/edit-config
 
 %caps(cap_dac_read_search,cap_sys_ptrace=ep) %attr(0550,root,netdata) %{_libexecdir}/%{name}/plugins.d/apps.plugin
 
@@ -213,10 +215,18 @@ rm -rf "${RPM_BUILD_ROOT}"
 %attr(0770,netdata,netdata) %dir %{_localstatedir}/lib/%{name}
 
 %dir %{_datadir}/%{name}
+
 %dir %{_sysconfdir}/%{name}/health.d
 %dir %{_sysconfdir}/%{name}/python.d
 %dir %{_sysconfdir}/%{name}/charts.d
 %dir %{_sysconfdir}/%{name}/node.d
+%dir %{_sysconfdir}/%{name}/statsd.d
+
+%dir %{_libdir}/%{name}/conf.d/health.d
+%dir %{_libdir}/%{name}/conf.d/python.d
+%dir %{_libdir}/%{name}/conf.d/charts.d
+%dir %{_libdir}/%{name}/conf.d/node.d
+%dir %{_libdir}/%{name}/conf.d/statsd.d
 
 %if %{with systemd}
 %{_unitdir}/netdata.service
@@ -230,70 +240,5 @@ rm -rf "${RPM_BUILD_ROOT}"
 %{_datadir}/%{name}/web
 
 %changelog
-* Tue Mar 27 2018 Costa Tsaousis <costa@tsaousis.gr> - 1.10.0-1
-  Please check full changelog at github.
-  https://github.com/firehol/netdata/releases
-* Sun Dec 17 2017 Costa Tsaousis <costa@tsaousis.gr> - 1.9.0-1
-  Please check full changelog at github.
-  https://github.com/firehol/netdata/releases
-* Sun Sep 17 2017 Costa Tsaousis <costa@tsaousis.gr> - 1.8.0-1
-  This is mainly a bugfix release.
-  Please check full changelog at github.
-* Sun Jul 16 2017 Costa Tsaousis <costa@tsaousis.gr> - 1.7.0-1
-- netdata is now a fully featured statsd server
-- new installation options
-- metrics streaming and replication improvements
-- backends improvements - prometheus support rewritten
-- netdata now monitors ZFS (on Linux and FreeBSD)
-- netdata now monitors ElasticSearch
-- netdata now monitors RabbitMQ
-- netdata now monitors Go applications (via expvar)
-- netdata now monitors ipfw (on FreeBSD 11)
-- netdata now monitors samba
-- netdata now monitors squid logs
-- netdata dashboard loading times have been improved significantly
-- netdata alarms now support custom hooks
-- dozens more improvements and bug fixes
-* Mon Mar 20 2017 Costa Tsaousis <costa@tsaousis.gr> - 1.6.0-1
-- central netdata
-- monitoring ephemeral nodes
-- monitoring ephemeral containers and VM guests
-- apps.plugin ported for FreeBSD
-- web_log plugin
-- JSON backends
-- IPMI monitoring
-- several new and improved plugins
-- several new and improved alarms and notifications
-- dozens more improvements and bug fixes
-* Sun Jan 22 2017 Costa Tsaousis <costa@tsaousis.gr> - 1.5.0-1
-- FreeBSD, MacOS, FreeNAS
-- Backends support
-- dozens of new and improved plugins
-- dozens of new and improved alarms and notification methods
-* Tue Oct 4 2016 Costa Tsaousis <costa@tsaousis.gr> - 1.4.0-1
-- the fastest netdata ever (with a better look too)!
-- improved IoT and containers support!
-- alarms improved in almost every way!
-- Several more improvements, new features and bugfixes.
-* Sun Aug 28 2016 Costa Tsaousis <costa@tsaousis.gr> - 1.3.0-1
-- netdata now has health monitoring
-- netdata now generates badges
-- netdata now has python plugins
-- Several more improvements, new features and bugfixes.
-* Tue Jul 26 2016 Jason Barnett <J@sonBarnett.com> - 1.2.0-2
-- Added support for EL6
-- Corrected several Requires statements
-- Changed default to build without nfacct
-- Removed --docdir from configure
-* Mon May 16 2016 Costa Tsaousis <costa@tsaousis.gr> - 1.2.0-1
-- netdata is now 30% faster.
-- netdata now has a registry (my-netdata menu on the dashboard).
-- netdata now monitors Linux containers.
-- Several more improvements, new features and bugfixes.
-* Wed Apr 20 2016 Costa Tsaousis <costa@tsaousis.gr> - 1.1.0-1
-- Several new features (IPv6, SYNPROXY, Users, Users Groups).
-- A lot of bug fixes and optimizations.
-* Tue Mar 22 2016 Costa Tsaousis <costa@tsaousis.gr> - 1.0.0-1
-- First public release.
 * Sun Nov 15 2015 Alon Bar-Lev <alonbl@redhat.com> - 0.0.0-1
 - Initial add.
diff --git a/netdata.spec.in b/netdata.spec.in
index 529dc2383..b54a91e9f 100644
--- a/netdata.spec.in
+++ b/netdata.spec.in
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 %global contentdir %{_datadir}/netdata
 
 # This is temporary and should eventually be resolved. This bypasses
@@ -84,7 +85,7 @@ Version:	@PACKAGE_RPM_VERSION@
 Release:	1%{?dist}
 License:	GPLv3+
 Group:		Applications/System
-Source0:	https://github.com/firehol/%{name}/releases/download/v@PACKAGE_VERSION@/%{name}-@PACKAGE_VERSION@.tar.xz
+Source0:	https://github.com/netdata/%{name}/releases/download/v@PACKAGE_VERSION@/%{name}-@PACKAGE_VERSION@.tar.gz
 URL:		http://my-netdata.io
 BuildRequires:	pkgconfig
 BuildRequires:	xz
@@ -180,19 +181,20 @@ rm -rf "${RPM_BUILD_ROOT}"
 %defattr(-,root,root)
 
 %dir %{_sysconfdir}/%{name}
+%dir %{_libdir}/%{name}
 
-%config(noreplace) %{_sysconfdir}/%{name}/*.conf
-%config(noreplace) %{_sysconfdir}/%{name}/charts.d/*.conf
-%config(noreplace) %{_sysconfdir}/%{name}/health.d/*.conf
-#%%config(noreplace) %{_sysconfdir}/%{name}/node.d/*.conf
-%config(noreplace) %{_sysconfdir}/%{name}/python.d/*.conf
-%config(noreplace) %{_sysconfdir}/%{name}/statsd.d/*.conf
-%config(noreplace) %{_sysconfdir}/logrotate.d/%{name}
+%config %{_sysconfdir}/%{name}/*.conf
+#%config %{_sysconfdir}/%{name}/charts.d/*.conf
+#%config %{_sysconfdir}/%{name}/health.d/*.conf
+#%config %{_sysconfdir}/%{name}/node.d/*.conf
+#%config %{_sysconfdir}/%{name}/python.d/*.conf
+#%config %{_sysconfdir}/%{name}/statsd.d/*.conf
+%config %{_sysconfdir}/logrotate.d/%{name}
 
-# To be eventually moved to %%_defaultdocdir
-%{_sysconfdir}/%{name}/node.d/*.md
+%{_libdir}/%{name}
 %{_libexecdir}/%{name}
 %{_sbindir}/%{name}
+%{_sysconfdir}/%{name}/edit-config
 
 %caps(cap_dac_read_search,cap_sys_ptrace=ep) %attr(0550,root,netdata) %{_libexecdir}/%{name}/plugins.d/apps.plugin
 
@@ -213,10 +215,18 @@ rm -rf "${RPM_BUILD_ROOT}"
 %attr(0770,netdata,netdata) %dir %{_localstatedir}/lib/%{name}
 
 %dir %{_datadir}/%{name}
+
 %dir %{_sysconfdir}/%{name}/health.d
 %dir %{_sysconfdir}/%{name}/python.d
 %dir %{_sysconfdir}/%{name}/charts.d
 %dir %{_sysconfdir}/%{name}/node.d
+%dir %{_sysconfdir}/%{name}/statsd.d
+
+%dir %{_libdir}/%{name}/conf.d/health.d
+%dir %{_libdir}/%{name}/conf.d/python.d
+%dir %{_libdir}/%{name}/conf.d/charts.d
+%dir %{_libdir}/%{name}/conf.d/node.d
+%dir %{_libdir}/%{name}/conf.d/statsd.d
 
 %if %{with systemd}
 %{_unitdir}/netdata.service
@@ -230,70 +240,5 @@ rm -rf "${RPM_BUILD_ROOT}"
 %{_datadir}/%{name}/web
 
 %changelog
-* Tue Mar 27 2018 Costa Tsaousis <costa@tsaousis.gr> - 1.10.0-1
-  Please check full changelog at github.
-  https://github.com/firehol/netdata/releases
-* Sun Dec 17 2017 Costa Tsaousis <costa@tsaousis.gr> - 1.9.0-1
-  Please check full changelog at github.
-  https://github.com/firehol/netdata/releases
-* Sun Sep 17 2017 Costa Tsaousis <costa@tsaousis.gr> - 1.8.0-1
-  This is mainly a bugfix release.
-  Please check full changelog at github.
-* Sun Jul 16 2017 Costa Tsaousis <costa@tsaousis.gr> - 1.7.0-1
-- netdata is now a fully featured statsd server
-- new installation options
-- metrics streaming and replication improvements
-- backends improvements - prometheus support rewritten
-- netdata now monitors ZFS (on Linux and FreeBSD)
-- netdata now monitors ElasticSearch
-- netdata now monitors RabbitMQ
-- netdata now monitors Go applications (via expvar)
-- netdata now monitors ipfw (on FreeBSD 11)
-- netdata now monitors samba
-- netdata now monitors squid logs
-- netdata dashboard loading times have been improved significantly
-- netdata alarms now support custom hooks
-- dozens more improvements and bug fixes
-* Mon Mar 20 2017 Costa Tsaousis <costa@tsaousis.gr> - 1.6.0-1
-- central netdata
-- monitoring ephemeral nodes
-- monitoring ephemeral containers and VM guests
-- apps.plugin ported for FreeBSD
-- web_log plugin
-- JSON backends
-- IPMI monitoring
-- several new and improved plugins
-- several new and improved alarms and notifications
-- dozens more improvements and bug fixes
-* Sun Jan 22 2017 Costa Tsaousis <costa@tsaousis.gr> - 1.5.0-1
-- FreeBSD, MacOS, FreeNAS
-- Backends support
-- dozens of new and improved plugins
-- dozens of new and improved alarms and notification methods
-* Tue Oct 4 2016 Costa Tsaousis <costa@tsaousis.gr> - 1.4.0-1
-- the fastest netdata ever (with a better look too)!
-- improved IoT and containers support!
-- alarms improved in almost every way!
-- Several more improvements, new features and bugfixes.
-* Sun Aug 28 2016 Costa Tsaousis <costa@tsaousis.gr> - 1.3.0-1
-- netdata now has health monitoring
-- netdata now generates badges
-- netdata now has python plugins
-- Several more improvements, new features and bugfixes.
-* Tue Jul 26 2016 Jason Barnett <J@sonBarnett.com> - 1.2.0-2
-- Added support for EL6
-- Corrected several Requires statements
-- Changed default to build without nfacct
-- Removed --docdir from configure
-* Mon May 16 2016 Costa Tsaousis <costa@tsaousis.gr> - 1.2.0-1
-- netdata is now 30% faster.
-- netdata now has a registry (my-netdata menu on the dashboard).
-- netdata now monitors Linux containers.
-- Several more improvements, new features and bugfixes.
-* Wed Apr 20 2016 Costa Tsaousis <costa@tsaousis.gr> - 1.1.0-1
-- Several new features (IPv6, SYNPROXY, Users, Users Groups).
-- A lot of bug fixes and optimizations.
-* Tue Mar 22 2016 Costa Tsaousis <costa@tsaousis.gr> - 1.0.0-1
-- First public release.
 * Sun Nov 15 2015 Alon Bar-Lev <alonbl@redhat.com> - 0.0.0-1
 - Initial add.
diff --git a/node.d/Makefile.am b/node.d/Makefile.am
deleted file mode 100644
index 7f67faa6a..000000000
--- a/node.d/Makefile.am
+++ /dev/null
@@ -1,28 +0,0 @@
-MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
-
-dist_node_DATA = \
-	README.md \
-	named.node.js \
-	fronius.node.js \
-	sma_webbox.node.js \
-	snmp.node.js \
-	stiebeleltron.node.js \
-	$(NULL)
-
-nodemodulesdir=$(nodedir)/node_modules
-dist_nodemodules_DATA = \
-	node_modules/netdata.js \
-	node_modules/extend.js \
-	node_modules/pixl-xml.js \
-	node_modules/net-snmp.js \
-	node_modules/asn1-ber.js \
-	$(NULL)
-
-nodemoduleslibberdir=$(nodedir)/node_modules/lib/ber
-dist_nodemoduleslibber_DATA = \
-	node_modules/lib/ber/index.js \
-	node_modules/lib/ber/errors.js \
-	node_modules/lib/ber/reader.js \
-	node_modules/lib/ber/types.js \
-	node_modules/lib/ber/writer.js \
-	$(NULL)
diff --git a/node.d/README.md b/node.d/README.md
deleted file mode 100644
index 6818d34de..000000000
--- a/node.d/README.md
+++ /dev/null
@@ -1,118 +0,0 @@
-# Disclaimer

-

-Module configurations are written in JSON and **node.js is required**.

-

-to be edited.

-

----

-

-The following node.d modules are supported:

-

-# fronius

-

-This module collects metrics from the configured solar power installation from Fronius Symo.

-See `netdata/conf.d/node.d/fronius.conf.md` for more details.

-

-**Requirements**

- * Configuration file `fronius.conf` in the node.d netdata config dir (default: `/etc/netdata/node.d/fronius.conf`)

- * Fronius Symo with network access (http)

-

-It produces per server:

-

-1. **Power**

- * Current power input from the grid (positive values), output to the grid (negative values), in W

- * Current power input from the solar panels, in W

- * Current power stored in the accumulator (if present), in W (in theory, untested)

-

-2. **Consumption**

- * Local consumption in W

-

-3. **Autonomy**

- * Relative autonomy in %. 100 % autonomy means that the solar panels are delivering more power than it is needed by local consumption.

- * Relative self consumption in %. The lower the better

-

-4. **Energy**

- * The energy produced during the current day, in kWh

- * The energy produced during the current year, in kWh

-

-5. **Inverter**

- * The current power output from the connected inverters, in W, one dimension per inverter. At least one is always present.

- 

- 

-### configuration

-

-Sample:

-

-```json

-{

-    "enable_autodetect": false,

-    "update_every": 5,

-    "servers": [

-        {

-            "name": "Symo",

-            "hostname": "symo.ip.or.dns",

-            "update_every": 5,

-            "api_path": "/solar_api/v1/GetPowerFlowRealtimeData.fcgi"

-        }

-    ]

-}

-```

-

-If no configuration is given, the module will be disabled. Each `update_every` is optional, the default is `5`.

-

----

-

-# stiebel eltron

-

-This module collects metrics from the configured heat pump and hot water installation from Stiebel Eltron ISG web.

-See `netdata/conf.d/node.d/stiebeleltron.conf.md` for more details.

-

-**Requirements**

- * Configuration file `stiebeleltron.conf` in the node.d netdata config dir (default: `/etc/netdata/node.d/stiebeleltron.conf`)

- * Stiebel Eltron ISG web with network access (http), without password login

-

-The charts are configurable, however, the provided default configuration collects the following:

-

-1. **General**

- * Outside temperature in C

- * Condenser temperature in C

- * Heating circuit pressure in bar

- * Flow rate in l/min

- * Output of water and heat pumps in %

-

-2. **Heating**

- * Heat circuit 1 temperature in C (set/actual)

- * Heat circuit 2 temperature in C (set/actual)

- * Flow temperature in C (set/actual)

- * Buffer temperature in C (set/actual)

- * Pre-flow temperature in C

-

-3. **Hot Water**

- * Hot water temperature in C (set/actual)

-

-4. **Room Temperature**

- * Heat circuit 1 room temperature in C (set/actual)

- * Heat circuit 2 room temperature in C (set/actual)

-

-5. **Eletric Reheating**

- * Dual Mode Reheating temperature in C (hot water/heating)

-

-6. **Process Data**

- * Remaining compressor rest time in s

-

-7. **Runtime**

- * Compressor runtime hours (hot water/heating)

- * Reheating runtime hours (reheating 1/reheating 2)

-

-8. **Energy**

- * Compressor today in kWh (hot water/heating)

- * Compressor Total in kWh (hot water/heating)

- 

- 

-### configuration

-

-The default configuration is provided in [netdata/conf.d/node.d/stiebeleltron.conf.md](https://github.com/firehol/netdata/blob/master/conf.d/node.d/stiebeleltron.conf.md). Just change the `update_every` (if necessary) and hostnames. **You may have to adapt the configuration to suit your needs and setup** (which might be different).

-

-If no configuration is given, the module will be disabled. Each `update_every` is optional, the default is `10`.

-

----

diff --git a/plugins.d/Makefile.am b/plugins.d/Makefile.am
deleted file mode 100644
index 41e6d5366..000000000
--- a/plugins.d/Makefile.am
+++ /dev/null
@@ -1,23 +0,0 @@
-#
-# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
-#
-MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
-
-dist_plugins_DATA = \
-	README.md \
-	$(NULL)
-
-dist_plugins_SCRIPTS = \
-	alarm-email.sh \
-	alarm-notify.sh \
-	alarm-test.sh \
-	cgroup-name.sh \
-	cgroup-network-helper.sh \
-	charts.d.dryrun-helper.sh \
-	charts.d.plugin \
-	fping.plugin \
-	node.d.plugin \
-	python.d.plugin \
-	tc-qos-helper.sh \
-	loopsleepms.sh.inc \
-	$(NULL)
diff --git a/plugins.d/README.md b/plugins.d/README.md
deleted file mode 100644
index 35b9a2d99..000000000
--- a/plugins.d/README.md
+++ /dev/null
@@ -1,236 +0,0 @@
-netdata plugins
-===============
-
-Any program that can print a few values to its standard output can become
-a netdata plugin.
-
-There are 5 lines netdata parses. lines starting with:
-
-- `CHART` - create a new chart
-- `DIMENSION` - add a dimension to the chart just created
-- `BEGIN` - initialize data collection for a chart
-- `SET` - set the value of a dimension for the initialized chart
-- `END` - complete data collection for the initialized chart
-
-a single program can produce any number of charts with any number of dimensions
-each.
-
-charts can also be added any time (not just the beginning).
-
-### command line parameters
-
-The plugin should accept just **one** parameter: **the number of seconds it is
-expected to update the values for its charts**. The value passed by netdata
-to the plugin is controlled via its configuration file (so there is not need
-for the plugin to handle this configuration option).
-
-The script can overwrite the update frequency. For example, the server may
-request per second updates, but the script may overwrite this to one update
-every 5 seconds.
-
-### environment variables
-
-There are a few environment variables that are set by `netdata` and are
-available for the plugin to use.
-
-variable|description
-:------:|:----------
-`NETDATA_CONFIG_DIR`|The directory where all netdata related configuration should be stored. If the plugin requires custom configuration, this is the place to save it.
-`NETDATA_PLUGINS_DIR`|The directory where all netdata plugins are stored.
-`NETDATA_WEB_DIR`|The directory where the web files of netdata are saved.
-`NETDATA_CACHE_DIR`|The directory where the cache files of netdata are stored. Use this directory if the plugin requires a place to store data. A new directory should be created for the plugin for this purpose, inside this directory.
-`NETDATA_LOG_DIR`|The directory where the log files are stored. By default the `stderr` output of the plugin will be saved in the `error.log` file of netdata.
-`NETDATA_HOST_PREFIX`|This is used in environments where system directories like `/sys` and `/proc` have to be accessed at a different path.
-`NETDATA_DEBUG_FLAGS`|This is number (probably in hex starting with `0x`), that enables certain netdata debugging features.
-`NETDATA_UPDATE_EVERY`|The minimum number of seconds between chart refreshes. This is like the **internal clock** of netdata (it is user configurable, defaulting to `1`). There is no meaning for a plugin to update its values more frequently than this number of seconds.
-
-
-# the output of the plugin
-
-The plugin should output instructions for netdata to its output (`stdout`).
-
-## CHART
-
-`CHART` defines a new chart.
-
-the template is:
-
-> CHART type.id name title units [family [category [charttype [priority [update_every]]]]]
-
- where:
-  - `type.id`
-
-    uniquely identifies the chart,
-    this is what will be needed to add values to the chart
-
-  - `name`
-
-    is the name that will be presented to the used for this chart
-
-  - `title`
-
-    the text above the chart
-
-  - `units`
-
-    the label of the vertical axis of the chart,
-    all dimensions added to a chart should have the same units
-    of measurement
-
-  - `family`
-
-    is used to group charts together
-    (for example all eth0 charts should say: eth0),
-    if empty or missing, the `id` part of `type.id` will be used
-
-  - `category`
-
-    the section under which the chart will appear
-    (for example mem.ram should appear in the 'system' section),
-    the special word 'none' means: do not show this chart on the home page,
-    if empty or missing, the `type` part of `type.id` will be used
-
-  - `charttype`
-
-    one of `line`, `area` or `stacked`,
-    if empty or missing, the `line` will be used
-
-  - `priority`
-
-    is the relative priority of the charts as rendered on the web page,
-    lower numbers make the charts appear before the ones with higher numbers,
-    if empty or missing, `1000` will be used
-
-  - `update_every`
-
-    overwrite the update frequency set by the server,
-    if empty or missing, the user configured value will be used
-
-
-## DIMENSION
-
-`DIMENSION` defines a new dimension for the chart
-
-the template is:
-
-> DIMENSION id [name [algorithm [multiplier [divisor [hidden]]]]]
-
- where:
-
-  - `id`
-
-    the `id` of this dimension (it is a text value, not numeric),
-    this will be needed later to add values to the dimension
-
-  - `name`
-
-    the name of the dimension as it will appear at the legend of the chart,
-    if empty or missing the `id` will be used
-
-  - `algorithm`
-
-    one of:
-
-    * `absolute`
-
-      the value is to drawn as-is (interpolated to second boundary),
-      if `algorithm` is empty, invalid or missing, `absolute` is used
-
-    * `incremental`
-
-      the value increases over time,
-      the difference from the last value is presented in the chart,
-      the server interpolates the value and calculates a per second figure
-
-    * `percentage-of-absolute-row`
-
-      the % of this value compared to the total of all dimensions
-
-    * `percentage-of-incremental-row`
-
-      the % of this value compared to the incremental total of
-      all dimensions
-
-  - `multiplier`
-
-    an integer value to multiply the collected value,
-    if empty or missing, `1` is used
-
-  - `divisor`
-
-    an integer value to divide the collected value,
-    if empty or missing, `1` is used
-
-  - `hidden`
-
-    giving the keyword `hidden` will make this dimension hidden,
-    it will take part in the calculations but will not be presented in the chart
-
-
-## data collection
-
-data collection is defined as a series of `BEGIN` -> `SET` -> `END` lines
-
-> BEGIN type.id [microseconds]
-
-  - `type.id`
-
-    is the unique identification of the chart (as given in `CHART`)
-
-  - `microseconds`
-
-    is the number of microseconds since the last update of the chart,
-    it is optional.
-
-    Under heavy system load, the system may have some latency transfering
-    data from the plugins to netdata via the pipe. This number improves
-    accuracy significantly, since the plugin is able to calculate the
-    duration between its iterations better than netdata.
-
-    The first time the plugin is started, no microseconds should be given
-    to netdata.
-
-> SET id = value
-
-   - `id`
-
-     is the unique identification of the dimension (of the chart just began)
-
-   - `value`
-
-     is the collected value
-
-> END
-
-  END does not take any parameters, it commits the collected values to the chart.
-
-More `SET` lines may appear to update all the dimensions of the chart.
-All of them in one `BEGIN` -> `END` block.
-
-All `SET` lines within a single `BEGIN` -> `END` block have to refer to the
-same chart.
-
-If more charts need to be updated, each chart should have its own
-`BEGIN` -> `SET` -> `END` block.
-
-If, for any reason, a plugin has issued a `BEGIN` but wants to cancel it,
-it can issue a `FLUSH`. The `FLUSH` command will instruct netdata to ignore
-the last `BEGIN` command.
-
-If a plugin does not behave properly (outputs invalid lines, or does not
-follow these guidelines), will be disabled by netdata.
-
-
-### collected values
-
-netdata will collect any **signed** value in the 64bit range:
-`-9.223.372.036.854.775.808` to `+9.223.372.036.854.775.807`
-
-Internally, all calculations are made using 128 bit double precision and are
-stored in 30 bits as floating point.
-
-If a value is not collected, leave it empty, like this:
-
-`SET id = `
-
-or do not output the line at all.
diff --git a/python.d/Makefile.in b/python.d/Makefile.in
deleted file mode 100644
index d6e11d0cf..000000000
--- a/python.d/Makefile.in
+++ /dev/null
@@ -1,1107 +0,0 @@
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diff --git a/python.d/README.md b/python.d/README.md
deleted file mode 100644
index faabba2c7..000000000
--- a/python.d/README.md
+++ /dev/null
@@ -1,2363 +0,0 @@
-# Disclaimer
-
-Every module should be compatible with python2 and python3.
-All third party libraries should be installed system-wide or in `python_modules` directory.
-Module configurations are written in YAML and **pyYAML is required**.
-
-Every configuration file must have one of two formats:
-
-- Configuration for only one job:
-
-```yaml
-update_every : 2 # update frequency
-retries      : 1 # how many failures in update() is tolerated
-priority     : 20000 # where it is shown on dashboard
-
-other_var1   : bla  # variables passed to module
-other_var2   : alb
-```
-
-- Configuration for many jobs (ex. mysql):
-
-```yaml
-# module defaults:
-update_every : 2
-retries      : 1
-priority     : 20000
-
-local:  # job name
-  update_every : 5 # job update frequency
-  other_var1   : some_val # module specific variable
-
-other_job:
-  priority     : 5 # job position on dashboard
-  retries      : 20 # job retries
-  other_var2   : val # module specific variable
-```
-
-`update_every`, `retries`, and `priority` are always optional.
-
----
-
-The following python.d modules are supported:
-
-# apache
-
-This module will monitor one or more apache servers depending on configuration.
-
-**Requirements:**
- * apache with enabled `mod_status`
-
-It produces the following charts:
-
-1. **Requests** in requests/s
- * requests
-
-2. **Connections**
- * connections
-
-3. **Async Connections**
- * keepalive
- * closing
- * writing
-
-4. **Bandwidth** in kilobytes/s
- * sent
-
-5. **Workers**
- * idle
- * busy
-
-6. **Lifetime Avg. Requests/s** in requests/s
- * requests_sec
-
-7. **Lifetime Avg. Bandwidth/s** in kilobytes/s
- * size_sec
-
-8. **Lifetime Avg. Response Size** in bytes/request
- * size_req
-
-### configuration
-
-Needs only `url` to server's `server-status?auto`
-
-Here is an example for 2 servers:
-
-```yaml
-update_every : 10
-priority     : 90100
-
-local:
-  url      : 'http://localhost/server-status?auto'
-  retries  : 20
-
-remote:
-  url          : 'http://www.apache.org/server-status?auto'
-  update_every : 5
-  retries      : 4
-```
-
-Without configuration, module attempts to connect to `http://localhost/server-status?auto`
-
----
-
-# apache_cache
-
-Module monitors apache mod_cache log and produces only one chart:
-
-**cached responses** in percent cached
- * hit
- * miss
- * other
-
-### configuration
-
-Sample:
-
-```yaml
-update_every : 10
-priority     : 120000
-retries      : 5
-log_path     : '/var/log/apache2/cache.log'
-```
-
-If no configuration is given, module will attempt to read log file at `/var/log/apache2/cache.log`
-
----
-
-# beanstalk
-
-Module provides server and tube level statistics:
-
-**Requirements:**
- * `python-beanstalkc`
- * `python-yaml`
-
-**Server statistics:**
-
-1. **Cpu usage** in cpu time
- * user
- * system
-
-2. **Jobs rate** in jobs/s
- * total
- * timeouts
-
-3. **Connections rate** in connections/s
- * connections
-
-4. **Commands rate** in commands/s
- * put
- * peek
- * peek-ready
- * peek-delayed
- * peek-buried
- * reserve
- * use
- * watch
- * ignore
- * delete
- * release
- * bury
- * kick
- * stats
- * stats-job
- * stats-tube
- * list-tubes
- * list-tube-used
- * list-tubes-watched
- * pause-tube
-
-5. **Current tubes** in tubes
- * tubes
-
-6. **Current jobs** in jobs
- * urgent
- * ready
- * reserved
- * delayed
- * buried
-
-7. **Current connections** in connections
- * written
- * producers
- * workers
- * waiting
-
-8. **Binlog** in records/s
- * written
- * migrated
-
-9. **Uptime** in seconds
- * uptime
-
-**Per tube statistics:**
-
-1. **Jobs rate** in jobs/s
- * jobs
-
-2. **Jobs** in jobs
- * using
- * ready
- * reserved
- * delayed
- * buried
-
-3. **Connections** in connections
- * using
- * waiting
- * watching
-
-4. **Commands** in commands/s
- * deletes
- * pauses
-
-5. **Pause** in seconds
- * since
- * left
-
-
-### configuration
-
-Sample:
-
-```yaml
-host         : '127.0.0.1'
-port         : 11300
-```
-
-If no configuration is given, module will attempt to connect to beanstalkd on `127.0.0.1:11300` address
-
----
-
-# bind_rndc
-
-Module parses bind dump file to collect real-time performance metrics
-
-**Requirements:**
- * Version of bind must be 9.6 +
- * Netdata must have permissions to run `rndc stats`
-
-It produces:
-
-1. **Name server statistics**
- * requests
- * responses
- * success
- * auth_answer
- * nonauth_answer
- * nxrrset
- * failure
- * nxdomain
- * recursion
- * duplicate
- * rejections
-
-2. **Incoming queries**
- * RESERVED0
- * A
- * NS
- * CNAME
- * SOA
- * PTR
- * MX
- * TXT
- * X25
- * AAAA
- * SRV
- * NAPTR
- * A6
- * DS
- * RSIG
- * DNSKEY
- * SPF
- * ANY
- * DLV
-
-3. **Outgoing queries**
- * Same as Incoming queries
-
-
-### configuration
-
-Sample:
-
-```yaml
-local:
-  named_stats_path       : '/var/log/bind/named.stats'
-```
-
-If no configuration is given, module will attempt to read named.stats file  at `/var/log/bind/named.stats`
-
----
-
-# chrony
-
-This module monitors the precision and statistics of a local chronyd server.
-
-It produces:
-
-* frequency
-* last offset
-* RMS offset
-* residual freq
-* root delay
-* root dispersion
-* skew
-* system time
-
-**Requirements:**
-Verify that user netdata can execute `chronyc tracking`. If necessary, update `/etc/chrony.conf`, `cmdallow`.
-
-### Configuration
-
-Sample:
-```yaml
-# data collection frequency:
-update_every: 1
-
-# chrony query command:
-local:
-  command: 'chronyc -n tracking'
-```
-
----
-
-# ceph
-
-This module monitors the ceph cluster usage and consuption data of a server.
-
-It produces:
-
-* Cluster statistics (usage, available, latency, objects, read/write rate)
-* OSD usage
-* OSD latency
-* Pool usage
-* Pool read/write operations
-* Pool read/write rate
-* number of objects per pool
-
-**Requirements:**
-
-- `rados` python module
-- Granting read permissions to ceph group from keyring file
-```shell
-# chmod 640 /etc/ceph/ceph.client.admin.keyring
-```
-
-### Configuration
-
-Sample:
-```yaml
-local:
-  config_file: '/etc/ceph/ceph.conf'
-  keyring_file: '/etc/ceph/ceph.client.admin.keyring'
-```
-
----
-
-# couchdb
-
-This module monitors vital statistics of a local Apache CouchDB 2.x server, including:
-
-* Overall server reads/writes
-* HTTP traffic breakdown
-  * Request methods (`GET`, `PUT`, `POST`, etc.)
-  * Response status codes (`200`, `201`, `4xx`, etc.)
-* Active server tasks
-* Replication status (CouchDB 2.1 and up only)
-* Erlang VM stats
-* Optional per-database statistics: sizes, # of docs, # of deleted docs
-
-### Configuration
-
-Sample for a local server running on port 5984:
-```yaml
-local:
-  user: 'admin'
-  pass: 'password'
-  node: 'couchdb@127.0.0.1'
-```
-
-Be sure to specify a correct admin-level username and password.
-
-You may also need to change the `node` name; this should match the value of `-name NODENAME` in your CouchDB's `etc/vm.args` file. Typically this is of the form `couchdb@fully.qualified.domain.name` in a cluster, or `couchdb@127.0.0.1` / `couchdb@localhost` for a single-node server.
-
-If you want per-database statistics, these need to be added to the configuration, separated by spaces:
-```yaml
-local:
-  ...
-  databases: 'db1 db2 db3 ...'
-```
-
----
-
-# cpufreq
-
-This module shows the current CPU frequency as set by the cpufreq kernel
-module.
-
-**Requirement:**
-You need to have `CONFIG_CPU_FREQ` and (optionally) `CONFIG_CPU_FREQ_STAT`
-enabled in your kernel.
-
-This module tries to read from one of two possible locations. On
-initialization, it tries to read the `time_in_state` files provided by
-cpufreq\_stats. If this file does not exist, or doesn't contain valid data, it
-falls back to using the more inaccurate `scaling_cur_freq` file (which only
-represents the **current** CPU frequency, and doesn't account for any state
-changes which happen between updates).
-
-It produces one chart with multiple lines (one line per core).
-
-### configuration
-
-Sample:
-
-```yaml
-sys_dir: "/sys/devices"
-```
-
-If no configuration is given, module will search for cpufreq files in `/sys/devices` directory.
-Directory is also prefixed with `NETDATA_HOST_PREFIX` if specified.
-
----
-
-# cpuidle
-
-This module monitors the usage of CPU idle states.
-
-**Requirement:**
-Your kernel needs to have `CONFIG_CPU_IDLE` enabled.
-
-It produces one stacked chart per CPU, showing the percentage of time spent in
-each state.
-
----
-# dns_query_time
-
-This module provides dns query time statistics.
-
-**Requirement:**
-* `python-dnspython` package
-
-It produces one aggregate chart or one chart per dns server, showing the query time.
-
----
-
-# dnsdist
-
-Module monitor dnsdist performance and health metrics.
-
-Following charts are drawn:
-
-1. **Response latency**
- * latency-slow
- * latency100-1000
- * latency50-100
- * latency10-50
- * latency1-10
- * latency0-1
-
-2. **Cache performance**
- * cache-hits
- * cache-misses
-
-3. **ACL events**
- * acl-drops
- * rule-drop
- * rule-nxdomain
- * rule-refused
-
-4. **Noncompliant data**
- * empty-queries
- * no-policy
- * noncompliant-queries
- * noncompliant-responses
-
-5. **Queries**
- * queries
- * rdqueries
- * rdqueries
-
-6. **Health**
- * downstream-send-errors
- * downstream-timeouts
- * servfail-responses
- * trunc-failures
-
-### configuration
-
-```yaml
-localhost:
-  name : 'local'
-  url  : 'http://127.0.0.1:5053/jsonstat?command=stats'
-  user : 'username'
-  pass : 'password'
-  header:
-    X-API-Key: 'dnsdist-api-key'
-```
-
-# dovecot
-
-This module provides statistics information from dovecot server.
-Statistics are taken from dovecot socket by executing `EXPORT global` command.
-More information about dovecot stats can be found on [project wiki page.](http://wiki2.dovecot.org/Statistics)
-
-**Requirement:**
-Dovecot unix socket with R/W permissions for user netdata or dovecot with configured TCP/IP socket.
-
-Module gives information with following charts:
-
-1. **sessions**
- * active sessions
-
-2. **logins**
- * logins
-
-3. **commands** - number of IMAP commands
- * commands
-
-4. **Faults**
- * minor
- * major
-
-5. **Context Switches**
- * volountary
- * involountary
-
-6. **disk** in bytes/s
- * read
- * write
-
-7. **bytes** in bytes/s
- * read
- * write
-
-8. **number of syscalls** in syscalls/s
- * read
- * write
-
-9. **lookups** - number of lookups per second
- * path
- * attr
-
-10. **hits** - number of cache hits
- * hits
-
-11. **attempts** - authorization attemts
- * success
- * failure
-
-12. **cache** - cached authorization hits
- * hit
- * miss
-
-### configuration
-
-Sample:
-
-```yaml
-localtcpip:
-  name     : 'local'
-  host     : '127.0.0.1'
-  port     : 24242
-
-localsocket:
-  name     : 'local'
-  socket   : '/var/run/dovecot/stats'
-```
-
-If no configuration is given, module will attempt to connect to dovecot using unix socket localized in `/var/run/dovecot/stats`
-
----
-
-# elasticsearch
-
-Module monitor elasticsearch performance and health metrics
-
-It produces:
-
-1. **Search performance** charts:
- * Number of queries, fetches
- * Time spent on queries, fetches
- * Query and fetch latency
-
-2. **Indexing performance** charts:
- * Number of documents indexed, index refreshes, flushes
- * Time spent on indexing, refreshing, flushing
- * Indexing and flushing latency
-
-3. **Memory usage and garbace collection** charts:
- * JVM heap currently in use, commited
- * Count of garbage collections
- * Time spent on garbage collections
-
-4. **Host metrics** charts:
- * Available file descriptors in percent
- * Opened HTTP connections
- * Cluster communication transport metrics
-
-5. **Queues and rejections** charts:
- * Number of queued/rejected threads in thread pool
-
-6. **Fielddata cache** charts:
- * Fielddata cache size
- * Fielddata evictions and circuit breaker tripped count
-
-7. **Cluster health API** charts:
- * Cluster status
- * Nodes and tasks statistics
- * Shards statistics
-
-8. **Cluster stats API** charts:
- * Nodes statistics
- * Query cache statistics
- * Docs statistics
- * Store statistics
- * Indices and shards statistics
-
-### configuration
-
-Sample:
-
-```yaml
-local:
-  host               :  'ipaddress'   # Server ip address or hostname
-  port               : 'password'     # Port on which elasticsearch listed
-  cluster_health     :  True/False    # Calls to cluster health elasticsearch API. Enabled by default.
-  cluster_stats      :  True/False    # Calls to cluster stats elasticsearch API. Enabled by default.
-```
-
-If no configuration is given, module will fail to run.
-
----
-
-# exim
-
-Simple module executing `exim -bpc` to grab exim queue.
-This command can take a lot of time to finish its execution thus it is not recommended to run it every second.
-
-It produces only one chart:
-
-1. **Exim Queue Emails**
- * emails
-
-Configuration is not needed.
-
----
-
-# fail2ban
-
-Module monitor fail2ban log file to show all bans for all active jails
-
-**Requirements:**
- * fail2ban.log file MUST BE readable by netdata (A good idea is to add  **create 0640 root netdata** to fail2ban conf at logrotate.d)
-
-It produces one chart with multiple lines (one line per jail)
-
-### configuration
-
-Sample:
-
-```yaml
-local:
- log_path: '/var/log/fail2ban.log'
- conf_path: '/etc/fail2ban/jail.local'
- exclude: 'dropbear apache'
-```
-If no configuration is given, module will attempt to read log file at `/var/log/fail2ban.log` and conf file at `/etc/fail2ban/jail.local`.
-If conf file is not found default jail is `ssh`.
-
----
-
-# freeradius
-
-Uses the `radclient` command to provide freeradius statistics. It is not recommended to run it every second.
-
-It produces:
-
-1. **Authentication counters:**
- * access-accepts
- * access-rejects
- * auth-dropped-requests
- * auth-duplicate-requests
- * auth-invalid-requests
- * auth-malformed-requests
- * auth-unknown-types
-
-2. **Accounting counters:** [optional]
- * accounting-requests
- * accounting-responses
- * acct-dropped-requests
- * acct-duplicate-requests
- * acct-invalid-requests
- * acct-malformed-requests
- * acct-unknown-types
-
-3. **Proxy authentication counters:** [optional]
- * proxy-access-accepts
- * proxy-access-rejects
- * proxy-auth-dropped-requests
- * proxy-auth-duplicate-requests
- * proxy-auth-invalid-requests
- * proxy-auth-malformed-requests
- * proxy-auth-unknown-types
-
-4. **Proxy accounting counters:** [optional]
- * proxy-accounting-requests
- * proxy-accounting-responses
- * proxy-acct-dropped-requests
- * proxy-acct-duplicate-requests
- * proxy-acct-invalid-requests
- * proxy-acct-malformed-requests
- * proxy-acct-unknown-typesa
-
-
-### configuration
-
-Sample:
-
-```yaml
-local:
-  host       : 'localhost'
-  port       : '18121'
-  secret     : 'adminsecret'
-  acct       : False # Freeradius accounting statistics.
-  proxy_auth : False # Freeradius proxy authentication statistics.
-  proxy_acct : False # Freeradius proxy accounting statistics.
-```
-
-**Freeradius server configuration:**
-
-The configuration for the status server is automatically created in the sites-available directory.
-By default, server is enabled and can be queried from every client.
-FreeRADIUS will only respond to status-server messages, if the status-server virtual server has been enabled.
-
-To do this, create a link from the sites-enabled directory to the status file in the sites-available directory:
- * cd sites-enabled
- * ln -s ../sites-available/status status
-
-and restart/reload your FREERADIUS server.
-
----
-
-# go_expvar
-
----
-
-The `go_expvar` module can monitor any Go application that exposes its metrics with the use of `expvar` package from the Go standard library.
-
-`go_expvar` produces charts for Go runtime memory statistics and optionally any number of custom charts. Please see the [wiki page](https://github.com/firehol/netdata/wiki/Monitoring-Go-Applications) for more info.
-
-For the memory statistics, it produces the following charts:
-
-1. **Heap allocations** in kB
- * alloc: size of objects allocated on the heap
- * inuse: size of allocated heap spans
-
-2. **Stack allocations** in kB
- * inuse: size of allocated stack spans
-
-3. **MSpan allocations** in kB
- * inuse: size of allocated mspan structures
-
-4. **MCache allocations** in kB
- * inuse: size of allocated mcache structures
-
-5. **Virtual memory** in kB
- * sys: size of reserved virtual address space
-
-6. **Live objects**
- * live: number of live objects in memory
-
-7. **GC pauses average** in ns
- * avg: average duration of all GC stop-the-world pauses
-
-### configuration
-
-Please see the [wiki page](https://github.com/firehol/netdata/wiki/Monitoring-Go-Applications#using-netdata-go_expvar-module) for detailed info about module configuration.
-
----
-
-# haproxy
-
-Module monitors frontend and backend metrics such as bytes in, bytes out, sessions current, sessions in queue current.
-And health metrics such as backend servers status (server check should be used).
-
-Plugin can obtain data from url **OR** unix socket.
-
-**Requirement:**
-Socket MUST be readable AND writable by netdata user.
-
-It produces:
-
-1. **Frontend** family charts
- * Kilobytes in/s
- * Kilobytes out/s
- * Sessions current
- * Sessions in queue current
-
-2. **Backend** family charts
- * Kilobytes in/s
- * Kilobytes out/s
- * Sessions current
- * Sessions in queue current
-
-3. **Health** chart
- * number of failed servers for every backend (in DOWN state)
-
-
-### configuration
-
-Sample:
-
-```yaml
-via_url:
-  user       : 'username' # ONLY IF stats auth is used
-  pass       : 'password' # # ONLY IF stats auth is used
-  url     : 'http://ip.address:port/url;csv;norefresh'
-```
-
-OR
-
-```yaml
-via_socket:
-  socket       : 'path/to/haproxy/sock'
-```
-
-If no configuration is given, module will fail to run.
-
----
-
-# hddtemp
-
-Module monitors disk temperatures from one or more hddtemp daemons.
-
-**Requirement:**
-Running `hddtemp` in daemonized mode with access on tcp port
-
-It produces one chart **Temperature** with dynamic number of dimensions (one per disk)
-
-### configuration
-
-Sample:
-
-```yaml
-update_every: 3
-host: "127.0.0.1"
-port: 7634
-```
-
-If no configuration is given, module will attempt to connect to hddtemp daemon on `127.0.0.1:7634` address
-
----
-
-# httpcheck
-
-Module monitors remote http server for availability and response time.
-
-Following charts are drawn per job:
-
-1. **Response time** ms
- * Time in 0.1 ms resolution in which the server responds.
-   If the connection failed, the value is missing.
-
-2. **Status** boolean
- * Connection successful
- * Unexpected content: No Regex match found in the response
- * Unexpected status code: Do we get 500 errors?
- * Connection failed: port not listening or blocked
- * Connection timed out: host or port unreachable
-
-### configuration
-
-Sample configuration and their default values.
-
-```yaml
-server:
-  url: 'http://host:port/path'  # required
-  status_accepted:              # optional
-    - 200
-  timeout: 1                    # optional, supports decimals (e.g. 0.2)
-  update_every: 3               # optional
-  regex: 'REGULAR_EXPRESSION'   # optional, see https://docs.python.org/3/howto/regex.html
-  redirect: yes                 # optional
-```
-
-### notes
-
- * The status chart is primarily intended for alarms, badges or for access via API.
- * A system/service/firewall might block netdata's access if a portscan or
-   similar is detected.
- * This plugin is meant for simple use cases. Currently, the accuracy of the
-   response time is low and should be used as reference only.
-
----
-
-# icecast
-
-This module will monitor number of listeners for active sources.
-
-**Requirements:**
- * icecast version >= 2.4.0
-
-It produces the following charts:
-
-1. **Listeners** in listeners
- * source number
-
-### configuration
-
-Needs only `url` to server's `/status-json.xsl`
-
-Here is an example for remote server:
-
-```yaml
-remote:
-  url      : 'http://1.2.3.4:8443/status-json.xsl'
-```
-
-Without configuration, module attempts to connect to `http://localhost:8443/status-json.xsl`
-
----
-
-# IPFS
-
-Module monitors [IPFS](https://ipfs.io) basic information.
-
-1. **Bandwidth** in kbits/s
- * in
- * out
-
-2. **Peers**
- * peers
-
-### configuration
-
-Only url to IPFS server is needed.
-
-Sample:
-
-```yaml
-localhost:
-  name : 'local'
-  url  : 'http://localhost:5001'
-```
-
----
-
-# isc_dhcpd
-
-Module monitor leases database to show all active leases for given pools.
-
-**Requirements:**
- * dhcpd leases file MUST BE readable by netdata
- * pools MUST BE in CIDR format
-
-It produces:
-
-1. **Pools utilization** Aggregate chart for all pools.
- * utilization in percent
-
-2. **Total leases**
- * leases (overall number of leases for all pools)
-
-3. **Active leases** for every pools
-  * leases (number of active leases in pool)
-
-
-### configuration
-
-Sample:
-
-```yaml
-local:
-  leases_path       : '/var/lib/dhcp/dhcpd.leases'
-  pools       : '192.168.3.0/24 192.168.4.0/24 192.168.5.0/24'
-```
-
-In case of python2 you need to  install `py2-ipaddress` to make plugin work.
-The module will not work If no configuration is given.
-
----
-
-
-# mdstat
-
-Module monitor /proc/mdstat
-
-It produces:
-
-1. **Health** Number of failed disks in every array (aggregate chart).
-
-2. **Disks stats**
- * total (number of devices array ideally would have)
- * inuse (number of devices currently are in use)
-
-3. **Current status**
- * resync in percent
- * recovery in percent
- * reshape in percent
- * check in percent
-
-4. **Operation status** (if resync/recovery/reshape/check is active)
- * finish in minutes
- * speed in megabytes/s
-
-### configuration
-No configuration is needed.
-
----
-
-# memcached
-
-Memcached monitoring module. Data grabbed from [stats interface](https://github.com/memcached/memcached/wiki/Commands#stats).
-
-1. **Network** in kilobytes/s
- * read
- * written
-
-2. **Connections** per second
- * current
- * rejected
- * total
-
-3. **Items** in cluster
- * current
- * total
-
-4. **Evicted and Reclaimed** items
- * evicted
- * reclaimed
-
-5. **GET** requests/s
- * hits
- * misses
-
-6. **GET rate** rate in requests/s
- * rate
-
-7. **SET rate** rate in requests/s
- * rate
-
-8. **DELETE** requests/s
- * hits
- * misses
-
-9. **CAS** requests/s
- * hits
- * misses
- * bad value
-
-10. **Increment** requests/s
- * hits
- * misses
-
-11. **Decrement** requests/s
- * hits
- * misses
-
-12. **Touch** requests/s
- * hits
- * misses
-
-13. **Touch rate** rate in requests/s
- * rate
-
-### configuration
-
-Sample:
-
-```yaml
-localtcpip:
-  name     : 'local'
-  host     : '127.0.0.1'
-  port     : 24242
-```
-
-If no configuration is given, module will attempt to connect to memcached instance on `127.0.0.1:11211` address.
-
----
-
-# mongodb
-
-Module monitor mongodb performance and health metrics
-
-**Requirements:**
- * `python-pymongo` package.
-
-You need to install it manually.
-
-
-Number of charts depends on mongodb version, storage engine and other features (replication):
-
-1. **Read requests**:
- * query
- * getmore (operation the cursor executes to get additional data from query)
-
-2. **Write requests**:
- * insert
- * delete
- * update
-
-3. **Active clients**:
- * readers (number of clients with read operations in progress or queued)
- * writers (number of clients with write operations in progress or queued)
-
-4. **Journal transactions**:
- * commits (count of transactions that have been written to the journal)
-
-5. **Data written to the journal**:
- * volume (volume of data)
-
-6. **Background flush** (MMAPv1):
- * average ms (average time taken by flushes to execute)
- * last ms (time taken by the last flush)
-
-8. **Read tickets** (WiredTiger):
- * in use (number of read tickets in use)
- * available (number of available read tickets remaining)
-
-9. **Write tickets** (WiredTiger):
- * in use (number of write tickets in use)
- * available (number of available write tickets remaining)
-
-10. **Cursors**:
- * opened (number of cursors currently opened by MongoDB for clients)
- * timedOut (number of cursors that have timed)
- * noTimeout (number of open cursors with timeout disabled)
-
-11. **Connections**:
- * connected (number of clients currently connected to the database server)
- * unused (number of unused connections available for new clients)
-
-12. **Memory usage metrics**:
- * virtual
- * resident (amount of memory used by the database process)
- * mapped
- * non mapped
-
-13. **Page faults**:
- * page faults (number of times MongoDB had to request from disk)
-
-14. **Cache metrics** (WiredTiger):
- * percentage of bytes currently in the cache (amount of space taken by cached data)
- * percantage of tracked dirty bytes in the cache (amount of space taken by dirty data)
-
-15. **Pages evicted from cache** (WiredTiger):
- * modified
- * unmodified
-
-16. **Queued requests**:
- * readers (number of read request currently queued)
- * writers (number of write request currently queued)
-
-17. **Errors**:
- * msg (number of message assertions raised)
- * warning (number of warning assertions raised)
- * regular (number of regular assertions raised)
- * user (number of assertions corresponding to errors generated by users)
-
-18. **Storage metrics** (one chart for every database)
- * dataSize (size of all documents + padding in the database)
- * indexSize (size of all indexes in the database)
- * storageSize (size of all extents in the database)
-
-19. **Documents in the database** (one chart for all databases)
- * documents (number of objects in the database among all the collections)
-
-20. **tcmalloc metrics**
- * central cache free
- * current total thread cache
- * pageheap free
- * pageheap unmapped
- * thread cache free
- * transfer cache free
- * heap size
-
-21. **Commands total/failed rate**
- * count
- * createIndex
- * delete
- * eval
- * findAndModify
- * insert
-
-22. **Locks metrics** (acquireCount metrics - number of times the lock was acquired in the specified mode)
- * Global lock
- * Database lock
- * Collection lock
- * Metadata lock
- * oplog lock
-
-23. **Replica set members state**
- * state
-
-24. **Oplog window**
-  * window (interval of time between the oldest and the latest entries in the oplog)
-
-25. **Replication lag**
-  * member (time when last entry from the oplog was applied for every member)
-
-26. **Replication set member heartbeat latency**
-  * member (time when last heartbeat was received from replica set member)
-
-
-### configuration
-
-Sample:
-
-```yaml
-local:
-    name : 'local'
-    host : '127.0.0.1'
-    port : 27017
-    user : 'netdata'
-    pass : 'netdata'
-
-```
-
-If no configuration is given, module will attempt to connect to mongodb daemon on `127.0.0.1:27017` address
-
----
-
-
-# mysql
-
-Module monitors one or more mysql servers
-
-**Requirements:**
- * python library [MySQLdb](https://github.com/PyMySQL/mysqlclient-python) (faster) or [PyMySQL](https://github.com/PyMySQL/PyMySQL) (slower)
-
-It will produce following charts (if data is available):
-
-1. **Bandwidth** in kbps
- * in
- * out
-
-2. **Queries** in queries/sec
- * queries
- * questions
- * slow queries
-
-3. **Operations** in operations/sec
- * opened tables
- * flush
- * commit
- * delete
- * prepare
- * read first
- * read key
- * read next
- * read prev
- * read random
- * read random next
- * rollback
- * save point
- * update
- * write
-
-4. **Table Locks** in locks/sec
- * immediate
- * waited
-
-5. **Select Issues** in issues/sec
- * full join
- * full range join
- * range
- * range check
- * scan
-
-6. **Sort Issues** in issues/sec
- * merge passes
- * range
- * scan
-
-### configuration
-
-You can provide, per server, the following:
-
-1. username which have access to database (deafults to 'root')
-2. password (defaults to none)
-3. mysql my.cnf configuration file
-4. mysql socket (optional)
-5. mysql host (ip or hostname)
-6. mysql port (defaults to 3306)
-
-Here is an example for 3 servers:
-
-```yaml
-update_every : 10
-priority     : 90100
-retries      : 5
-
-local:
-  'my.cnf'   : '/etc/mysql/my.cnf'
-  priority   : 90000
-
-local_2:
-  user     : 'root'
-  pass : 'blablablabla'
-  socket   : '/var/run/mysqld/mysqld.sock'
-  update_every : 1
-
-remote:
-  user     : 'admin'
-  pass : 'bla'
-  host     : 'example.org'
-  port     : 9000
-  retries  : 20
-```
-
-If no configuration is given, module will attempt to connect to mysql server via unix socket at `/var/run/mysqld/mysqld.sock` without password and with username `root`
-
----
-
-# nginx
-
-This module will monitor one or more nginx servers depending on configuration. Servers can be either local or remote.
-
-**Requirements:**
- * nginx with configured 'ngx_http_stub_status_module'
- * 'location /stub_status'
-
-Example nginx configuration can be found in 'python.d/nginx.conf'
-
-It produces following charts:
-
-1. **Active Connections**
- * active
-
-2. **Requests** in requests/s
- * requests
-
-3. **Active Connections by Status**
- * reading
- * writing
- * waiting
-
-4. **Connections Rate** in connections/s
- * accepts
- * handled
-
-### configuration
-
-Needs only `url` to server's `stub_status`
-
-Here is an example for local server:
-
-```yaml
-update_every : 10
-priority     : 90100
-
-local:
-  url     : 'http://localhost/stub_status'
-  retries : 10
-```
-
-Without configuration, module attempts to connect to `http://localhost/stub_status`
-
----
-
-# nginx_plus
-
-This module will monitor one or more nginx_plus servers depending on configuration.
-Servers can be either local or remote.
-
-Example nginx_plus configuration can be found in 'python.d/nginx_plus.conf'
-
-It produces following charts:
-
-1. **Requests total** in requests/s
- * total
-
-2. **Requests current** in requests
- * current
-
-3. **Connection Statistics** in connections/s
- * accepted
- * dropped
-
-4. **Workers Statistics** in workers
- * idle
- * active
-
-5. **SSL Handshakes** in handshakes/s
- * successful
- * failed
-
-6. **SSL Session Reuses** in sessions/s
- * reused
-
-7. **SSL Memory Usage** in percent
- * usage
-
-8. **Processes** in processes
- * respawned
-
-For every server zone:
-
-1. **Processing** in requests
- * processing
-
-2. **Requests** in requests/s
- * requests
-
-3. **Responses** in requests/s
- * 1xx
- * 2xx
- * 3xx
- * 4xx
- * 5xx
-
-4. **Traffic** in kilobits/s
- * received
- * sent
-
-For every upstream:
-
-1. **Peers Requests** in requests/s
- * peer name (dimension per peer)
-
-2. **All Peers Responses** in responses/s
- * 1xx
- * 2xx
- * 3xx
- * 4xx
- * 5xx
-
-3. **Peer Responses** in requests/s (for every peer)
- * 1xx
- * 2xx
- * 3xx
- * 4xx
- * 5xx
-
-4. **Peers Connections** in active
- * peer name (dimension per peer)
-
-5. **Peers Connections Usage** in percent
- * peer name (dimension per peer)
-
-6. **All Peers Traffic** in KB
- * received
- * sent
-
-7. **Peer Traffic** in KB/s (for every peer)
- * received
- * sent
-
-8. **Peer Timings** in ms (for every peer)
- * header
- * response
-
-9. **Memory Usage** in percent
- * usage
-
-10. **Peers Status** in state
- * peer name (dimension per peer)
-
-11. **Peers Total Downtime** in seconds
- * peer name (dimension per peer)
-
-For every cache:
-
-1. **Traffic** in KB
- * served
- * written
- * bypass
-
-2. **Memory Usage** in percent
- * usage
-
-### configuration
-
-Needs only `url` to server's `status`
-
-Here is an example for local server:
-
-```yaml
-local:
-  url     : 'http://localhost/status'
-```
-
-Without configuration, module fail to start.
-
----
-
-# nsd
-
-Module uses the `nsd-control stats_noreset` command to provide `nsd` statistics.
-
-**Requirements:**
- * Version of `nsd` must be 4.0+
- * Netdata must have permissions to run `nsd-control stats_noreset`
-
-It produces:
-
-1. **Queries**
- * queries
-
-2. **Zones**
- * master
- * slave
-
-3. **Protocol**
- * udp
- * udp6
- * tcp
- * tcp6
-
-4. **Query Type**
- * A
- * NS
- * CNAME
- * SOA
- * PTR
- * HINFO
- * MX
- * NAPTR
- * TXT
- * AAAA
- * SRV
- * ANY
-
-5. **Transfer**
- * NOTIFY
- * AXFR
-
-6. **Return Code**
- * NOERROR
- * FORMERR
- * SERVFAIL
- * NXDOMAIN
- * NOTIMP
- * REFUSED
- * YXDOMAIN
-
-
-Configuration is not needed.
-
----
-
-# ntpd
-
-Module monitors the system variables of the local `ntpd` daemon (optional incl. variables of the polled peers) using the NTP Control Message Protocol via UDP socket, similar to `ntpq`, the [standard NTP query program](http://doc.ntp.org/current-stable/ntpq.html).
-
-**Requirements:**
- * Version: `NTPv4`
- * Local interrogation allowed in `/etc/ntp.conf` (default):
-
-```
-# Local users may interrogate the ntp server more closely.
-restrict 127.0.0.1
-restrict ::1
-```
-
-It produces:
-
-1. system
- * offset
- * jitter
- * frequency
- * delay
- * dispersion
- * stratum
- * tc
- * precision
-
-2. peers
- * offset
- * delay
- * dispersion
- * jitter
- * rootdelay
- * rootdispersion
- * stratum
- * hmode
- * pmode
- * hpoll
- * ppoll
- * precision
-
-**configuration**
-
-Sample:
-
-```yaml
-update_every: 10
-
-host: 'localhost'
-port: '123'
-show_peers: yes
-# hide peers with source address in ranges 127.0.0.0/8 and 192.168.0.0/16
-peer_filter: '(127\..*)|(192\.168\..*)'
-# check for new/changed peers every 60 updates
-peer_rescan: 60
-```
-
-Sample (multiple jobs):
-
-Note: `ntp.conf` on the host `otherhost` must be configured to allow queries from our local host by including a line like `restrict <IP> nomodify notrap nopeer`.
-
-```yaml
-local:
-    host: 'localhost'
-
-otherhost:
-    host: 'otherhost'
-```
-
-If no configuration is given, module will attempt to connect to `ntpd` on `::1:123` or `127.0.0.1:123` and show charts for the systemvars. Use `show_peers: yes` to also show the charts for configured peers. Local peers in the range `127.0.0.0/8` are hidden by default, use `peer_filter: ''` to show all peers.
-
----
-
-# ovpn_status_log
-
-Module monitor openvpn-status log file.
-
-**Requirements:**
-
- * If you are running multiple OpenVPN instances out of the same directory, MAKE SURE TO EDIT DIRECTIVES which create output files
- so that multiple instances do not overwrite each other's output files.
-
- * Make sure NETDATA USER CAN READ openvpn-status.log
-
- * Update_every interval MUST MATCH interval on which OpenVPN writes operational status to log file.
-
-It produces:
-
-1. **Users** OpenVPN active users
- * users
-
-2. **Traffic** OpenVPN overall bandwidth usage in kilobit/s
- * in
- * out
-
-### configuration
-
-Sample:
-
-```yaml
-default
- log_path     : '/var/log/openvpn-status.log'
-```
-
----
-
-# phpfpm
-
-This module will monitor one or more php-fpm instances depending on configuration.
-
-**Requirements:**
- * php-fpm with enabled `status` page
- * access to `status` page via web server
-
-It produces following charts:
-
-1. **Active Connections**
- * active
- * maxActive
- * idle
-
-2. **Requests** in requests/s
- * requests
-
-3. **Performance**
- * reached
- * slow
-
-### configuration
-
-Needs only `url` to server's `status`
-
-Here is an example for local instance:
-
-```yaml
-update_every : 3
-priority     : 90100
-
-local:
-  url     : 'http://localhost/status'
-  retries : 10
-```
-
-Without configuration, module attempts to connect to `http://localhost/status`
-
----
-
-# portcheck
-
-Module monitors a remote TCP service.
-
-Following charts are drawn per host:
-
-1. **Latency** ms
- * Time required to connect to a TCP port.
-   Displays latency in 0.1 ms resolution. If the connection failed, the value is missing.
-
-2. **Status** boolean
- * Connection successful
- * Could not create socket: possible DNS problems
- * Connection refused: port not listening or blocked
- * Connection timed out: host or port unreachable
-
-
-### configuration
-
-```yaml
-server:
-  host: 'dns or ip'     # required
-  port: 22              # required
-  timeout: 1            # optional
-  update_every: 1       # optional
-```
-
-### notes
-
- * The error chart is intended for alarms, badges or for access via API.
- * A system/service/firewall might block netdata's access if a portscan or
-   similar is detected.
- * Currently, the accuracy of the latency is low and should be used as reference only.
-
----
-
-# postfix
-
-Simple module executing `postfix -p` to grab postfix queue.
-
-It produces only two charts:
-
-1. **Postfix Queue Emails**
- * emails
-
-2. **Postfix Queue Emails Size** in KB
- * size
-
-Configuration is not needed.
-
----
-
-# postgres
-
-Module monitors one or more postgres servers.
-
-**Requirements:**
-
- * `python-psycopg2` package. You have to install to manually.
-
-Following charts are drawn:
-
-1. **Database size** MB
- * size
-
-2. **Current Backend Processes** processes
- * active
-
-3. **Write-Ahead Logging Statistics** files/s
- * total
- * ready
- * done
-
-4. **Checkpoints** writes/s
- * scheduled
- * requested
-
-5. **Current connections to db** count
- * connections
-
-6. **Tuples returned from db** tuples/s
- * sequential
- * bitmap
-
-7. **Tuple reads from db** reads/s
- * disk
- * cache
-
-8. **Transactions on db** transactions/s
- * commited
- * rolled back
-
-9. **Tuples written to db** writes/s
- * inserted
- * updated
- * deleted
- * conflicts
-
-10. **Locks on db** count per type
- * locks
-
-### configuration
-
-```yaml
-socket:
-  name         : 'socket'
-  user         : 'postgres'
-  database     : 'postgres'
-
-tcp:
-  name         : 'tcp'
-  user         : 'postgres'
-  database     : 'postgres'
-  host         : 'localhost'
-  port         : 5432
-```
-
-When no configuration file is found, module tries to connect to TCP/IP socket: `localhost:5432`.
-
----
-
-# powerdns
-
-Module monitor powerdns performance and health metrics.
-
-Following charts are drawn:
-
-1. **Queries and Answers**
- * udp-queries
- * udp-answers
- * tcp-queries
- * tcp-answers
-
-2. **Cache Usage**
- * query-cache-hit
- * query-cache-miss
- * packetcache-hit
- * packetcache-miss
-
-3. **Cache Size**
- * query-cache-size
- * packetcache-size
- * key-cache-size
- * meta-cache-size
-
-4. **Latency**
- * latency
-
-### configuration
-
-```yaml
-local:
-  name     : 'local'
-  url     : 'http://127.0.0.1:8081/api/v1/servers/localhost/statistics'
-  header   :
-    X-API-Key: 'change_me'
-```
-
----
-
-# rabbitmq
-
-Module monitor rabbitmq performance and health metrics.
-
-Following charts are drawn:
-
-1. **Queued Messages**
- * ready
- * unacknowledged
-
-2. **Message Rates**
- * ack
- * redelivered
- * deliver
- * publish
-
-3. **Global Counts**
- * channels
- * consumers
- * connections
- * queues
- * exchanges
-
-4. **File Descriptors**
- * used descriptors
-
-5. **Socket Descriptors**
- * used descriptors
-
-6. **Erlang processes**
- * used processes
-
-7. **Erlang run queue**
- * Erlang run queue
-
-8. **Memory**
- * free memory in megabytes
-
-9. **Disk Space**
- * free disk space in gigabytes
-
-### configuration
-
-```yaml
-socket:
-  name     : 'local'
-  host     : '127.0.0.1'
-  port     :  15672
-  user     : 'guest'
-  pass     : 'guest'
-
-```
-
-When no configuration file is found, module tries to connect to: `localhost:15672`.
-
----
-
-# redis
-
-Get INFO data from redis instance.
-
-Following charts are drawn:
-
-1. **Operations** per second
- * operations
-
-2. **Hit rate** in percent
- * rate
-
-3. **Memory utilization** in kilobytes
- * total
- * lua
-
-4. **Database keys**
- * lines are creates dynamically based on how many databases are there
-
-5. **Clients**
- * connected
- * blocked
-
-6. **Slaves**
- * connected
-
-### configuration
-
-```yaml
-socket:
-  name     : 'local'
-  socket   : '/var/lib/redis/redis.sock'
-
-localhost:
-  name     : 'local'
-  host     : 'localhost'
-  port     : 6379
-```
-
-When no configuration file is found, module tries to connect to TCP/IP socket: `localhost:6379`.
-
----
-
-# samba
-
-Performance metrics of Samba file sharing.
-
-It produces the following charts:
-
-1. **Syscall R/Ws** in kilobytes/s
- * sendfile
- * recvfle
-
-2. **Smb2 R/Ws** in kilobytes/s
- * readout
- * writein
- * readin
- * writeout
-
-3. **Smb2 Create/Close** in operations/s
- * create
- * close
-
-4. **Smb2 Info** in operations/s
- * getinfo
- * setinfo
-
-5. **Smb2 Find** in operations/s
- * find
-
-6. **Smb2 Notify** in operations/s
- * notify
-
-7. **Smb2 Lesser Ops** as counters
- * tcon
- * negprot
- * tdis
- * cancel
- * logoff
- * flush
- * lock
- * keepalive
- * break
- * sessetup
-
-### configuration
-
-Requires that smbd has been compiled with profiling enabled.  Also required
-that `smbd` was started either with the `-P 1` option or inside `smb.conf`
-using `smbd profiling level`.
-
-This plugin uses `smbstatus -P` which can only be executed by root.  It uses
-sudo and assumes that it is configured such that the `netdata` user can
-execute smbstatus as root without password.
-
-For example:
-
-    netdata ALL=(ALL)       NOPASSWD: /usr/bin/smbstatus -P
-
-```yaml
-update_every : 5 # update frequency
-```
-
----
-
-# sensors
-
-System sensors information.
-
-Charts are created dynamically.
-
-### configuration
-
-For detailed configuration information please read [`sensors.conf`](https://github.com/firehol/netdata/blob/master/conf.d/python.d/sensors.conf) file.
-
-### possible issues
-
-There have been reports from users that on certain servers, ACPI ring buffer errors are printed by the kernel (`dmesg`) when ACPI sensors are being accessed.
-We are tracking such cases in issue [#827](https://github.com/firehol/netdata/issues/827).
-Please join this discussion for help.
-
----
-
-# springboot
-
-This module will monitor one or more Java Spring-boot applications depending on configuration.
-
-It produces following charts:
-
-1. **Response Codes** in requests/s
- * 1xx
- * 2xx
- * 3xx
- * 4xx
- * 5xx
- * others
-
-2. **Threads**
- * daemon
- * total
-
-3. **GC Time** in milliseconds and **GC Operations** in operations/s
- * Copy
- * MarkSweep
- * ...
-
-4. **Heap Mmeory Usage** in KB
- * used
- * committed
-
-### configuration
-
-Please see the [Monitoring Java Spring Boot Applications](https://github.com/firehol/netdata/wiki/Monitoring-Java-Spring-Boot-Applications) page for detailed info about module configuration.
-
----
-
-# squid
-
-This module will monitor one or more squid instances depending on configuration.
-
-It produces following charts:
-
-1. **Client Bandwidth** in kilobits/s
- * in
- * out
- * hits
-
-2. **Client Requests** in requests/s
- * requests
- * hits
- * errors
-
-3. **Server Bandwidth** in kilobits/s
- * in
- * out
-
-4. **Server Requests** in requests/s
- * requests
- * errors
-
-### configuration
-
-```yaml
-priority     : 50000
-
-local:
-  request : 'cache_object://localhost:3128/counters'
-  host    : 'localhost'
-  port    : 3128
-```
-
-Without any configuration module will try to autodetect where squid presents its `counters` data
-
----
-
-# smartd_log
-
-Module monitor `smartd` log files to collect HDD/SSD S.M.A.R.T attributes.
-
-It produces following charts (you can add additional attributes in the module configuration file):
-
-1. **Read Error Rate** attribute 1
-
-2. **Start/Stop Count** attribute 4
-
-3. **Reallocated Sectors Count** attribute 5
-
-4. **Seek Error Rate** attribute 7
-
-5. **Power-On Hours Count** attribute 9
-
-6. **Power Cycle Count** attribute 12
-
-7. **Load/Unload Cycles** attribute 193
-
-8. **Temperature** attribute 194
-
-9. **Current Pending Sectors** attribute 197
-
-10. **Off-Line Uncorrectable** attribute 198
-
-11. **Write Error Rate** attribute 200
-
-### configuration
-
-```yaml
-local:
-  log_path : '/var/log/smartd/'
-```
-
-If no configuration is given, module will attempt to read log files in /var/log/smartd/ directory.
-
----
-
-# tomcat
-
-Present tomcat containers memory utilization.
-
-Charts:
-
-1. **Requests** per second
- * accesses
-
-2. **Volume** in KB/s
- * volume
-
-3. **Threads**
- * current
- * busy
-
-4. **JVM Free Memory** in MB
- * jvm
-
-### configuration
-
-```yaml
-localhost:
-  name : 'local'
-  url  : 'http://127.0.0.1:8080/manager/status?XML=true'
-  user : 'tomcat_username'
-  pass : 'secret_tomcat_password'
-```
-
-Without configuration, module attempts to connect to `http://localhost:8080/manager/status?XML=true`, without any credentials.
-So it will probably fail.
-
----
-
-# Traefik
-
-Module uses the `health` API to provide statistics.
-
-It produces:
-
-1. **Responses** by statuses
- * success (1xx, 2xx, 304)
- * error (5xx)
- * redirect (3xx except 304)
- * bad (4xx)
- * other (all other responses)
-
-2. **Responses** by codes
- * 2xx (successful)
- * 5xx (internal server errors)
- * 3xx (redirect)
- * 4xx (bad)
- * 1xx (informational)
- * other (non-standart responses)
-
-3. **Detailed Response Codes** requests/s (number of responses for each response code family individually)
-
-4. **Requests**/s
- * request statistics
-
-5. **Total response time**
- * sum of all response time
-
-6. **Average response time**
-
-7. **Average response time per iteration**
-
-8. **Uptime**
- * Traefik server uptime
-
-### configuration
-
-Needs only `url` to server's `health`
-
-Here is an example for local server:
-
-```yaml
-update_every : 1
-priority     : 60000
-
-local:
-  url     : 'http://localhost:8080/health'
-  retries : 10
-```
-
-Without configuration, module attempts to connect to `http://localhost:8080/health`.
-
----
-
-# varnish cache
-
-Module uses the `varnishstat` command to provide varnish cache statistics.
-
-It produces:
-
-1. **Connections Statistics** in connections/s
- * accepted
- * dropped
-
-2. **Client Requests** in requests/s
- * received
-
-3. **All History Hit Rate Ratio** in percent
- * hit
- * miss
- * hitpass
-
-4. **Current Poll Hit Rate Ratio** in percent
- * hit
- * miss
- * hitpass
-
-5. **Expired Objects** in expired/s
- * objects
-
-6. **Least Recently Used Nuked Objects** in nuked/s
- * objects
-
-
-7. **Number Of Threads In All Pools** in threads
- * threads
-
-8. **Threads Statistics** in threads/s
- * created
- * failed
- * limited
-
-9. **Current Queue Length** in requests
- * in queue
-
-10. **Backend Connections Statistics** in connections/s
- * successful
- * unhealthy
- * reused
- * closed
- * resycled
- * failed
-
-10. **Requests To The Backend** in requests/s
- * received
-
-11. **ESI Statistics** in problems/s
- * errors
- * warnings
-
-12. **Memory Usage** in MB
- * free
- * allocated
-
-13. **Uptime** in seconds
- * uptime
-
-
-### configuration
-
-No configuration is needed.
-
----
-
-# web_log
-
-Tails the apache/nginx/lighttpd/gunicorn log files to collect real-time web-server statistics.
-
-It produces following charts:
-
-1. **Response by type** requests/s
- * success (1xx, 2xx, 304)
- * error (5xx)
- * redirect (3xx except 304)
- * bad (4xx)
- * other (all other responses)
-
-2. **Response by code family** requests/s
- * 1xx (informational)
- * 2xx (successful)
- * 3xx (redirect)
- * 4xx (bad)
- * 5xx (internal server errors)
- * other (non-standart responses)
- * unmatched (the lines in the log file that are not matched)
-
-3. **Detailed Response Codes** requests/s (number of responses for each response code family individually)
-
-4. **Bandwidth** KB/s
- * received (bandwidth of requests)
- * send (bandwidth of responses)
-
-5. **Timings** ms (request processing time)
- * min (bandwidth of requests)
- * max (bandwidth of responses)
- * average (bandwidth of responses)
-
-6. **Request per url** requests/s (configured by user)
-
-7. **Http Methods** requests/s (requests per http method)
-
-8. **Http Versions** requests/s (requests per http version)
-
-9. **IP protocols** requests/s (requests per ip protocol version)
-
-10. **Curent Poll Unique Client IPs** unique ips/s (unique client IPs per data collection iteration)
-
-11. **All Time Unique Client IPs** unique ips/s (unique client IPs since the last restart of netdata)
-
-
-### configuration
-
-```yaml
-nginx_log:
-  name  : 'nginx_log'
-  path  : '/var/log/nginx/access.log'
-
-apache_log:
-  name  : 'apache_log'
-  path  : '/var/log/apache/other_vhosts_access.log'
-  categories:
-      cacti : 'cacti.*'
-      observium : 'observium'
-```
-
-Module has preconfigured jobs for nginx, apache and gunicorn on various distros.
-
----
diff --git a/python.d/dnsdist.chart.py b/python.d/dnsdist.chart.py
deleted file mode 100644
index b40112cbc..000000000
--- a/python.d/dnsdist.chart.py
+++ /dev/null
@@ -1,101 +0,0 @@
-# -*- coding: utf-8 -*-
-from json import loads
-from bases.FrameworkServices.UrlService import UrlService
-
-ORDER = ['queries', 'queries_dropped', 'packets_dropped', 'answers', 'backend_responses', 'backend_commerrors', 'backend_errors', 'cache', 'servercpu', 'servermem', 'query_latency', 'query_latency_avg']
-CHARTS = {
-	'queries': {
-		'options': [None, 'Client queries received', 'queries/s', 'queries', 'dnsdist.queries', 'line'],
-		'lines': [
-			['queries', 'all', 'incremental'],
-			['rdqueries', 'recursive', 'incremental'],
-			['empty-queries', 'empty', 'incremental']
-	]},
-	'queries_dropped': {
-		'options': [None, 'Client queries dropped', 'queries/s', 'queries', 'dnsdist.queries_dropped', 'line'],
-		'lines': [
-			['rule-drop', 'rule drop', 'incremental'],
-			['dyn-blocked', 'dynamic block', 'incremental'],
-			['no-policy', 'no policy', 'incremental'],
-			['noncompliant-queries', 'non compliant', 'incremental']
-	]},
-	'packets_dropped': {
-		'options': [None, 'Packets dropped', 'packets/s', 'packets', 'dnsdist.packets_dropped', 'line'],
-		'lines': [
-			['acl-drops', 'acl', 'incremental']
-	]},
-	'answers': {
-		'options': [None, 'Answers statistics', 'answers/s', 'answers', 'dnsdist.answers', 'line'],
-		'lines': [
-			['self-answered', 'self answered', 'incremental'],
-			['rule-nxdomain', 'nxdomain', 'incremental', -1],
-			['rule-refused', 'refused', 'incremental', -1],
-			['trunc-failures', 'trunc failures', 'incremental', -1]
-	]},
-	'backend_responses': {
-		'options': [None, 'Backend responses', 'responses/s', 'backends', 'dnsdist.backend_responses', 'line'],
-		'lines': [
-			['responses', 'responses', 'incremental']
-	]},
-	'backend_commerrors': {
-		'options': [None, 'Backend Communication Errors', 'errors/s', 'backends', 'dnsdist.backend_commerrors', 'line'],
-		'lines': [
-			['downstream-send-errors', 'send errors', 'incremental']
-	]},
-	'backend_errors': {
-		'options': [None, 'Backend error responses', 'responses/s', 'backends', 'dnsdist.backend_errors', 'line'],
-		'lines': [
-			['downstream-timeouts', 'timeout', 'incremental'],
-			['servfail-responses', 'servfail', 'incremental'],
-			['noncompliant-responses', 'non compliant', 'incremental']
-	]},
-	'cache': {
-		'options': [None, 'Cache performance', 'answers/s', 'cache', 'dnsdist.cache', 'area'],
-		'lines': [
-			['cache-hits', 'hits', 'incremental'],
-			['cache-misses', 'misses', 'incremental', -1]
-	]},
-	'servercpu': {
-		'options': [None, 'DNSDIST server CPU utilization', 'ms/s', 'server', 'dnsdist.servercpu', 'stacked'],
-		'lines': [
-			['cpu-sys-msec', 'system state', 'incremental'],
-			['cpu-user-msec', 'user state', 'incremental']
-	]},
-	'servermem': {
-		'options': [None, 'DNSDIST server memory utilization', 'MB', 'server', 'dnsdist.servermem', 'area'],
-		'lines': [
-			['real-memory-usage', 'memory usage', 'absolute', 1, 1048576]
-	]},
-	'query_latency': {
-		'options': [None, 'Query latency', 'queries/s', 'latency', 'dnsdist.query_latency', 'stacked'],
-		'lines': [
-			['latency0-1', '1ms', 'incremental'],
-			['latency1-10', '10ms', 'incremental'],
-			['latency10-50', '50ms', 'incremental'],
-			['latency50-100', '100ms', 'incremental'],
-			['latency100-1000', '1sec', 'incremental'],
-			['latency-slow', 'slow', 'incremental']
-	]},
-	'query_latency_avg': {
-		'options': [None, 'Average latency for the last N queries', 'ms/query', 'latency', 'dnsdist.query_latency_avg', 'line'],
-		'lines': [
-			['latency-avg100', '100', 'absolute'],
-			['latency-avg1000', '1k', 'absolute'],
-			['latency-avg10000', '10k', 'absolute'],
-			['latency-avg1000000', '1000k', 'absolute']
-	]}
-}
-
-class Service(UrlService):
-	def __init__(self, configuration=None, name=None):
-		UrlService.__init__(self, configuration=configuration, name=name)
-		self.order = ORDER
-		self.definitions = CHARTS
-
-	def _get_data(self):
-		data = self._get_raw_data()
-		if not data:
-			return None
-
-		return loads(data)
-
diff --git a/python.d/fail2ban.chart.py b/python.d/fail2ban.chart.py
deleted file mode 100644
index 895833f87..000000000
--- a/python.d/fail2ban.chart.py
+++ /dev/null
@@ -1,213 +0,0 @@
-# -*- coding: utf-8 -*-
-# Description: fail2ban log netdata python.d module
-# Author: l2isbad
-
-import bisect
-
-from glob import glob
-from re import compile as r_compile
-from os import access as is_accessible, R_OK
-from os.path import isdir, getsize
-
-
-from bases.FrameworkServices.LogService import LogService
-
-priority = 60000
-retries = 60
-REGEX_JAILS = r_compile(r'\[([a-zA-Z0-9_-]+)\][^\[\]]+?enabled\s+= (true|false)')
-REGEX_DATA = r_compile(r'\[(?P<jail>[A-Za-z-_0-9]+)\] (?P<action>U|B)[a-z]+ (?P<ipaddr>\d{1,3}(?:\.\d{1,3}){3})')
-ORDER = ['jails_bans', 'jails_in_jail']
-
-
-class Service(LogService):
-    """
-    fail2ban log class
-    Reads logs line by line
-    Jail auto detection included
-    It produces following charts:
-    * Bans per second for every jail
-    * Banned IPs for every jail (since the last restart of netdata)
-    """
-    def __init__(self, configuration=None, name=None):
-        LogService.__init__(self, configuration=configuration, name=name)
-        self.order = ORDER
-        self.definitions = dict()
-        self.log_path = self.configuration.get('log_path', '/var/log/fail2ban.log')
-        self.conf_path = self.configuration.get('conf_path', '/etc/fail2ban/jail.local')
-        self.conf_dir = self.configuration.get('conf_dir', '/etc/fail2ban/jail.d/')
-        self.exclude = self.configuration.get('exclude')
-
-    def _get_data(self):
-        """
-        Parse new log lines
-        :return: dict
-        """
-        raw = self._get_raw_data()
-        if raw is None:
-            return None
-        elif not raw:
-            return self.to_netdata
-
-        # Fail2ban logs looks like
-        # 2016-12-25 12:36:04,711 fail2ban.actions[2455]: WARNING [ssh] Ban 178.156.32.231
-        for row in raw:
-            match = REGEX_DATA.search(row)
-            if match:
-                match_dict = match.groupdict()
-                jail, action, ipaddr = match_dict['jail'], match_dict['action'], match_dict['ipaddr']
-                if jail in self.jails_list:
-                    if action == 'B':
-                        self.to_netdata[jail] += 1
-                        if address_not_in_jail(self.banned_ips[jail], ipaddr, self.to_netdata[jail + '_in_jail']):
-                            self.to_netdata[jail + '_in_jail'] += 1
-                    else:
-                        if ipaddr in self.banned_ips[jail]:
-                            self.banned_ips[jail].remove(ipaddr)
-                            self.to_netdata[jail + '_in_jail'] -= 1
-
-        return self.to_netdata
-
-    def check(self):
-        """
-        :return: bool
-
-        Check if the "log_path" is not empty and readable
-        """
-
-        if not (is_accessible(self.log_path, R_OK) and getsize(self.log_path) != 0):
-            self.error('%s is not readable or empty' % self.log_path)
-            return False
-        self.jails_list, self.to_netdata, self.banned_ips = self.jails_auto_detection_()
-        self.definitions = create_definitions_(self.jails_list)
-        self.info('Jails: %s' % self.jails_list)
-        return True
-
-    def jails_auto_detection_(self):
-        """
-        return: <tuple>
-
-        * jails_list - list of enabled jails (['ssh', 'apache', ...])
-        * to_netdata - dict ({'ssh': 0, 'ssh_in_jail': 0, ...})
-        * banned_ips - here will be stored all the banned ips ({'ssh': ['1.2.3.4', '5.6.7.8', ...], ...})
-        """
-        raw_jails_list = list()
-        jails_list = list()
-
-        for raw_jail in parse_configuration_files_(self.conf_path, self.conf_dir, self.error):
-            raw_jails_list.extend(raw_jail)
-
-        for jail, status in raw_jails_list:
-            if status == 'true' and jail not in jails_list:
-                jails_list.append(jail)
-            elif status == 'false' and jail in jails_list:
-                jails_list.remove(jail)
-        # If for some reason parse failed we still can START with default jails_list.
-        jails_list = list(set(jails_list) - set(self.exclude.split()
-                                                if isinstance(self.exclude, str) else list())) or ['ssh']
-
-        to_netdata = dict([(jail, 0) for jail in jails_list])
-        to_netdata.update(dict([(jail + '_in_jail', 0) for jail in jails_list]))
-        banned_ips = dict([(jail, list()) for jail in jails_list])
-
-        return jails_list, to_netdata, banned_ips
-
-
-def create_definitions_(jails_list):
-    """
-    Chart definitions creating
-    """
-
-    definitions = {
-        'jails_bans': {'options': [None, 'Jails Ban Statistics', 'bans/s', 'bans', 'jail.bans', 'line'],
-                       'lines': []},
-        'jails_in_jail': {'options': [None, 'Banned IPs (since the last restart of netdata)', 'IPs',
-                                      'in jail', 'jail.in_jail', 'line'],
-                          'lines': []}}
-    for jail in jails_list:
-        definitions['jails_bans']['lines'].append([jail, jail, 'incremental'])
-        definitions['jails_in_jail']['lines'].append([jail + '_in_jail', jail, 'absolute'])
-
-    return definitions
-
-
-def parse_configuration_files_(jails_conf_path, jails_conf_dir, print_error):
-    """
-    :param jails_conf_path: <str>
-    :param jails_conf_dir: <str>
-    :param print_error: <function>
-    :return: <tuple>
-
-    Uses "find_jails_in_files" function to find all jails in the "jails_conf_dir" directory
-    and in the "jails_conf_path"
-
-    All files must endswith ".local" or ".conf"
-    Return order is important.
-    According man jail.conf it should be
-    * jail.conf
-    * jail.d/*.conf (in alphabetical order)
-    * jail.local
-    * jail.d/*.local (in alphabetical order)
-    """
-    path_conf, path_local, dir_conf, dir_local = list(), list(), list(), list()
-
-    # Parse files in the directory
-    if not (isinstance(jails_conf_dir, str) and isdir(jails_conf_dir)):
-        print_error('%s is not a directory' % jails_conf_dir)
-    else:
-        dir_conf = list(filter(lambda conf: is_accessible(conf, R_OK), glob(jails_conf_dir + '/*.conf')))
-        dir_local = list(filter(lambda local: is_accessible(local, R_OK), glob(jails_conf_dir + '/*.local')))
-        if not (dir_conf or dir_local):
-            print_error('%s is empty or not readable' % jails_conf_dir)
-        else:
-            dir_conf, dir_local = (find_jails_in_files(dir_conf, print_error),
-                                   find_jails_in_files(dir_local, print_error))
-
-    # Parse .conf and .local files
-    if isinstance(jails_conf_path, str) and jails_conf_path.endswith(('.local', '.conf')):
-        path_conf, path_local = (find_jails_in_files([jails_conf_path.split('.')[0] + '.conf'], print_error),
-                                 find_jails_in_files([jails_conf_path.split('.')[0] + '.local'], print_error))
-
-    return path_conf, dir_conf, path_local, dir_local
-
-
-def find_jails_in_files(list_of_files, print_error):
-    """
-    :param list_of_files: <list>
-    :param print_error: <function>
-    :return: <list>
-
-    Open a file and parse it to find all (enabled and disabled) jails
-    The output is a list of tuples:
-    [('ssh', 'true'), ('apache', 'false'), ...]
-    """
-    jails_list = list()
-    for conf in list_of_files:
-        if is_accessible(conf, R_OK):
-            with open(conf, 'rt') as f:
-                raw_data = f.readlines()
-            data = ' '.join(line for line in raw_data if line.startswith(('[', 'enabled')))
-            jails_list.extend(REGEX_JAILS.findall(data))
-        else:
-            print_error('%s is not readable or not exist' % conf)
-    return jails_list
-
-
-def address_not_in_jail(pool, address, pool_size):
-    """
-    :param pool: <list>
-    :param address: <str>
-    :param pool_size: <int>
-    :return: bool
-
-    Checks if the address is in the pool.
-    If not address will be added
-    """
-    index = bisect.bisect_left(pool, address)
-    if index < pool_size:
-        if pool[index] == address:
-            return False
-        bisect.insort_left(pool, address)
-        return True
-    else:
-        bisect.insort_left(pool, address)
-        return True
diff --git a/python.d/hddtemp.chart.py b/python.d/hddtemp.chart.py
deleted file mode 100644
index 577cab09f..000000000
--- a/python.d/hddtemp.chart.py
+++ /dev/null
@@ -1,110 +0,0 @@
-# -*- coding: utf-8 -*-
-# Description: hddtemp netdata python.d module
-# Author: Pawel Krupa (paulfantom)
-
-
-import os
-from copy import deepcopy
-
-from bases.FrameworkServices.SocketService import SocketService
-
-# default module values (can be overridden per job in `config`)
-#update_every = 2
-priority = 60000
-retries = 60
-
-# default job configuration (overridden by python.d.plugin)
-# config = {'local': {
-#             'update_every': update_every,
-#             'retries': retries,
-#             'priority': priority,
-#             'host': 'localhost',
-#             'port': 7634
-#          }}
-
-ORDER = ['temperatures']
-
-CHARTS = {
-    'temperatures': {
-        'options': ['disks_temp', 'Disks Temperatures', 'Celsius', 'temperatures', 'hddtemp.temperatures', 'line'],
-        'lines': [
-            # lines are created dynamically in `check()` method
-        ]}}
-
-
-class Service(SocketService):
-    def __init__(self, configuration=None, name=None):
-        SocketService.__init__(self, configuration=configuration, name=name)
-        self.order = ORDER
-        self.definitions = deepcopy(CHARTS)
-        self._keep_alive = False
-        self.request = ""
-        self.host = "127.0.0.1"
-        self.port = 7634
-        self.disks = list()
-
-    def get_disks(self):
-        try:
-            disks = self.configuration['devices']
-            self.info("Using configured disks {0}".format(disks))
-        except (KeyError, TypeError):
-            self.info("Autodetecting disks")
-            return ["/dev/" + f for f in os.listdir("/dev") if len(f) == 3 and f.startswith("sd")]
-
-        ret = list()
-        for disk in disks:
-            if not disk.startswith('/dev/'):
-                disk = "/dev/" + disk
-            ret.append(disk)
-        if not ret:
-            self.error("Provided disks cannot be found in /dev directory.")
-        return ret
-
-    def _check_raw_data(self, data):
-        if not data.endswith('|'):
-            return False
-
-        if all(disk in data for disk in self.disks):
-            return True
-        return False
-
-    def get_data(self):
-        """
-        Get data from TCP/IP socket
-        :return: dict
-        """
-        try:
-            raw = self._get_raw_data().split("|")[:-1]
-        except AttributeError:
-            self.error("no data received")
-            return None
-        data = dict()
-        for i in range(len(raw) // 5):
-            if not raw[i*5+1] in self.disks:
-                continue
-            try:
-                val = int(raw[i*5+3])
-            except ValueError:
-                val = 0
-            data[raw[i*5+1].replace("/dev/", "")] = val
-
-        if not data:
-            self.error("received data doesn't have needed records")
-            return None
-        return data
-
-    def check(self):
-        """
-        Parse configuration, check if hddtemp is available, and dynamically create chart lines data
-        :return: boolean
-        """
-        self._parse_config()
-        self.disks = self.get_disks()
-
-        data = self.get_data()
-        if data is None:
-            return False
-
-        for name in data:
-            self.definitions['temperatures']['lines'].append([name])
-        return True
diff --git a/python.d/mdstat.chart.py b/python.d/mdstat.chart.py
deleted file mode 100644
index 35ba9058f..000000000
--- a/python.d/mdstat.chart.py
+++ /dev/null
@@ -1,189 +0,0 @@
-# -*- coding: utf-8 -*-
-# Description: mdstat netdata python.d module
-# Author: l2isbad
-
-import re
-
-from collections import defaultdict
-
-from bases.FrameworkServices.SimpleService import SimpleService
-
-priority = 60000
-retries = 60
-update_every = 1
-
-ORDER = ['mdstat_health']
-CHARTS = {
-    'mdstat_health': {
-        'options': [None, 'Faulty Devices In MD', 'failed disks', 'health', 'md.health', 'line'],
-        'lines': list()
-    }
-}
-
-OPERATIONS = ('check', 'resync', 'reshape', 'recovery', 'finish', 'speed')
-
-RE_DISKS = re.compile(r' (?P<array>[a-zA-Z_0-9]+) : active .+\['
-                      r'(?P<total_disks>[0-9]+)/'
-                      r'(?P<inuse_disks>[0-9]+)\]')
-
-RE_STATUS = re.compile(r' (?P<array>[a-zA-Z_0-9]+) : active .+ '
-                       r'(?P<operation>[a-z]+) =[ ]{1,2}'
-                       r'(?P<operation_status>[0-9.]+).+finish='
-                       r'(?P<finish>([0-9.]+))min speed='
-                       r'(?P<speed>[0-9]+)')
-
-
-def md_charts(md):
-    order = ['{0}_disks'.format(md.name),
-             '{0}_operation'.format(md.name),
-             '{0}_finish'.format(md.name),
-             '{0}_speed'.format(md.name)
-             ]
-
-    charts = dict()
-    charts[order[0]] = {
-        'options': [None, 'Disks Stats', 'disks', md.name, 'md.disks', 'stacked'],
-        'lines': [
-            ['{0}_total_disks'.format(md.name), 'total', 'absolute'],
-            ['{0}_inuse_disks'.format(md.name), 'inuse', 'absolute']
-        ]
-    }
-
-    charts['_'.join([md.name, 'operation'])] = {
-        'options': [None, 'Current Status', 'percent', md.name, 'md.status', 'line'],
-        'lines': [
-            ['{0}_resync'.format(md.name), 'resync', 'absolute', 1, 100],
-            ['{0}_recovery'.format(md.name), 'recovery', 'absolute', 1, 100],
-            ['{0}_reshape'.format(md.name), 'reshape', 'absolute', 1, 100],
-            ['{0}_check'.format(md.name), 'check', 'absolute', 1, 100]
-        ]
-    }
-
-    charts['_'.join([md.name, 'finish'])] = {
-        'options': [None, 'Approximate Time Until Finish', 'seconds', md.name, 'md.rate', 'line'],
-        'lines': [
-            ['{0}_finish'.format(md.name), 'finish in', 'absolute', 1, 1000]
-        ]
-    }
-
-    charts['_'.join([md.name, 'speed'])] = {
-        'options': [None, 'Operation Speed', 'KB/s', md.name, 'md.rate', 'line'],
-        'lines': [
-            ['{0}_speed'.format(md.name), 'speed', 'absolute', 1, 1000]
-        ]
-    }
-
-    return order, charts
-
-
-class MD:
-    def __init__(self, name, stats):
-        self.name = name
-        self.stats = stats
-
-    def update_stats(self, stats):
-        self.stats = stats
-
-    def data(self):
-        stats = dict(('_'.join([self.name, k]), v) for k, v in self.stats.items())
-        stats['{0}_health'.format(self.name)] = int(self.stats['total_disks']) - int(self.stats['inuse_disks'])
-        return stats
-
-
-class Service(SimpleService):
-    def __init__(self, configuration=None, name=None):
-        SimpleService.__init__(self, configuration=configuration, name=name)
-        self.order = ORDER
-        self.definitions = CHARTS
-        self.mds = dict()
-
-    def check(self):
-        arrays = find_arrays(self._get_raw_data())
-        if not arrays:
-            self.error('Failed to read data from /proc/mdstat or there is no active arrays')
-            return None
-        return True
-
-    @staticmethod
-    def _get_raw_data():
-        """
-        Read data from /proc/mdstat
-        :return: str
-        """
-        try:
-            with open('/proc/mdstat', 'rt') as proc_mdstat:
-                return proc_mdstat.readlines() or None
-        except (OSError, IOError):
-            return None
-
-    def get_data(self):
-        """
-        Parse data from _get_raw_data()
-        :return: dict
-        """
-        arrays = find_arrays(self._get_raw_data())
-        if not arrays:
-            return None
-
-        data = dict()
-        for array, values in arrays.items():
-
-            if array not in self.mds:
-                md = MD(array, values)
-                self.mds[md.name] = md
-                self.create_new_array_charts(md)
-            else:
-                md = self.mds[array]
-                md.update_stats(values)
-
-            data.update(md.data())
-
-        return data
-
-    def create_new_array_charts(self, md):
-        order, charts = md_charts(md)
-
-        self.charts['mdstat_health'].add_dimension(['{0}_health'.format(md.name), md.name])
-        for chart_name in order:
-            params = [chart_name] + charts[chart_name]['options']
-            dimensions = charts[chart_name]['lines']
-
-            new_chart = self.charts.add_chart(params)
-            for dimension in dimensions:
-                new_chart.add_dimension(dimension)
-
-
-def find_arrays(raw_data):
-    if raw_data is None:
-        return None
-    data = defaultdict(str)
-    counter = 1
-
-    for row in (elem.strip() for elem in raw_data):
-        if not row:
-            counter += 1
-            continue
-        data[counter] = ' '.join([data[counter], row])
-
-    arrays = dict()
-    for value in data.values():
-        match = RE_DISKS.search(value)
-        if not match:
-            continue
-
-        match = match.groupdict()
-        array = match.pop('array')
-        arrays[array] = match
-        for operation in OPERATIONS:
-            arrays[array][operation] = 0
-
-        match = RE_STATUS.search(value)
-        if match:
-            match = match.groupdict()
-            if match['operation'] in OPERATIONS:
-                arrays[array]['operation'] = match['operation']
-                arrays[array][match['operation']] = float(match['operation_status']) * 100
-                arrays[array]['finish'] = float(match['finish']) * 1000 * 60
-                arrays[array]['speed'] = float(match['speed']) * 1000
-
-    return arrays or None
diff --git a/python.d/powerdns.chart.py b/python.d/powerdns.chart.py
deleted file mode 100644
index a8d2f399c..000000000
--- a/python.d/powerdns.chart.py
+++ /dev/null
@@ -1,58 +0,0 @@
-# -*- coding: utf-8 -*-
-# Description: powerdns netdata python.d module
-# Author: l2isbad
-
-from json import loads
-
-from bases.FrameworkServices.UrlService import UrlService
-
-priority = 60000
-retries = 60
-# update_every = 3
-
-ORDER = ['questions', 'cache_usage', 'cache_size', 'latency']
-CHARTS = {
-    'questions': {
-        'options': [None, 'PowerDNS Queries and Answers', 'count', 'questions', 'powerdns.questions', 'line'],
-        'lines': [
-            ['udp-queries', None, 'incremental'],
-            ['udp-answers', None, 'incremental'],
-            ['tcp-queries', None, 'incremental'],
-            ['tcp-answers', None, 'incremental']
-        ]},
-    'cache_usage': {
-        'options': [None, 'PowerDNS Cache Usage', 'count', 'cache', 'powerdns.cache_usage', 'line'],
-        'lines': [
-            ['query-cache-hit', None, 'incremental'],
-            ['query-cache-miss', None, 'incremental'],
-            ['packetcache-hit', 'packet-cache-hit', 'incremental'],
-            ['packetcache-miss', 'packet-cache-miss', 'incremental']
-        ]},
-    'cache_size': {
-        'options': [None, 'PowerDNS Cache Size', 'count', 'cache', 'powerdns.cache_size', 'line'],
-        'lines': [
-            ['query-cache-size', None, 'absolute'],
-            ['packetcache-size', 'packet-cache-size', 'absolute'],
-            ['key-cache-size', None, 'absolute'],
-            ['meta-cache-size', None, 'absolute']
-        ]},
-    'latency': {
-        'options': [None, 'PowerDNS Latency', 'microseconds', 'latency', 'powerdns.latency', 'line'],
-        'lines': [
-            ['latency', None, 'absolute']
-        ]}
-
-}
-
-
-class Service(UrlService):
-    def __init__(self, configuration=None, name=None):
-        UrlService.__init__(self, configuration=configuration, name=name)
-        self.order = ORDER
-        self.definitions = CHARTS
-
-    def _get_data(self):
-        data = self._get_raw_data()
-        if not data:
-            return None
-        return dict((d['name'], d['value']) for d in loads(data))
diff --git a/python.d/python-modules-installer.sh b/python.d/python-modules-installer.sh
deleted file mode 100644
index cda3c6662..000000000
--- a/python.d/python-modules-installer.sh
+++ /dev/null
@@ -1,158 +0,0 @@
-#!/usr/bin/env bash
-
-umask 022
-
-dir="/usr/local/libexec/netdata/python.d"
-target="${dir}/python_modules"
-pv="$(python -V 2>&1)"
-
-# parse parameters
-while [ ! -z "${1}" ]
-do
-    case "${1}" in
-    -p|--python)
-        pv="Python ${2}"
-        shift 2
-        ;;
-
-    -d|--dir)
-        dir="${2}"
-        target="${dir}/python_modules"
-        echo >&2 "Will install python modules in: '${target}'"
-        shift 2
-        ;;
-
-    -s|--system)
-        target=
-        echo >&2 "Will install python modules system-wide"
-        shift
-        ;;
-
-    -h|--help)
-        echo "${0} [--dir netdata-python.d-path] [--system]"
-        echo "Please make sure you have installed packages: python-pip (or python3-pip) python-dev libyaml-dev libmysqlclient-dev"
-        exit 0
-        ;;
-
-    *)
-        echo >&2 "Cannot understand parameter: ${1}"
-        exit 1
-        ;;
-    esac
-done
-
-
-if [ ! -z "${target}" -a ! -d "${target}" ]
-then
-    echo >&2 "Cannot find directory: '${target}'"
-    exit 1
-fi
-
-if [[ "${pv}" =~ ^Python\ 2.* ]]
-then
-    pv=2
-    pip="$(which pip2 2>/dev/null)"
-elif [[ "${pv}" =~ ^Python\ 3.* ]]
-then
-    pv=3
-    pip="$(which pip3 2>/dev/null)"
-else
-    echo >&2 "Cannot detect python version. Is python installed?"
-    exit 1
-fi
-
-[ -z "${pip}" ] && pip="$(which pip 2>/dev/null)"
-if [ -z "${pip}" ]
-then
-    echo >&2 "pip command is required to install python v${pv} modules."
-    [ "${pv}" = "2" ] && echo >&2 "Please install python-pip."
-    [ "${pv}" = "3" ] && echo >&2 "Please install python3-pip."
-    exit 1
-fi
-
-echo >&2 "Working for python version ${pv} (pip command: '${pip}')"
-echo >&2 "Installing netdata python modules in: '${target}'"
-
-run() {
-    printf "Running command:\n# "
-    printf "%q " "${@}"
-    printf "\n"
-    "${@}"
-}
-
-# try to install all the python modules given as parameters
-# until the first that succeeds
-failed=""
-installed=""
-errors=0
-pip_install() {
-    local ret x msg="${1}"
-    shift
-
-    echo >&2
-    echo >&2
-    echo >&2 "Installing one of: ${*}"
-
-    for x in "${@}"
-    do
-        echo >&2
-        echo >&2 "attempting to install: ${x}"
-        if [ ! -z "${target}" ]
-        then
-            run "${pip}" install --target "${target}" "${x}"
-            ret=$?
-        else
-            run "${pip}" install "${x}"
-            ret=$?
-        fi
-        [ ${ret} -eq 0 ] && break
-        echo >&2 "failed to install: ${x}. ${msg}"
-    done
-
-    if [ ${ret} -ne 0 ]
-    then
-        echo >&2
-        echo >&2
-        echo >&2 "FAILED: could not install any of: ${*}. ${msg}"
-        echo >&2
-        echo >&2
-        errors=$(( errors + 1 ))
-        failed="${failed}|${*}"
-    else
-        echo >&2
-        echo >&2
-        echo >&2 "SUCCESS: we have: ${x}"
-        echo >&2
-        echo >&2
-        installed="${installed} ${x}"
-    fi
-    return ${ret}
-}
-
-if [ "${pv}" = "2" ]
-then
-    pip_install "is libyaml-dev and python-dev installed?" pyyaml
-    pip_install "is libmysqlclient-dev and python-dev installed?" mysqlclient mysql-python pymysql
-else
-    pip_install "is libyaml-dev and python-dev installed?" pyyaml
-    pip_install "is libmysqlclient-dev and python-dev installed?" mysql-python mysqlclient pymysql
-fi
-
-echo >&2
-echo >&2
-if [ ${errors} -ne 0 ]
-then
-    echo >&2 "Failed to install ${errors} modules: ${failed}"
-    if [ ! -z "${target}" ]
-    then
-		echo >&2
-		echo >&2 "If you are getting errors during cleanup from pip, there is a known bug"
-		echo >&2 "in certain versions of pip that prevents installing packages local to an"
-		echo >&2 "application. To install them system-wide please run:"
-		echo >&2 "$0 --system"
-	fi
-    exit 1
-else
-    echo >&2 "All done. We have: ${installed}"
-    exit 0
-fi
diff --git a/python.d/python_modules/__init__.py b/python.d/python_modules/__init__.py
deleted file mode 100644
index 8d1c8b69c..000000000
--- a/python.d/python_modules/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
- 
diff --git a/python.d/python_modules/base.py b/python.d/python_modules/base.py
deleted file mode 100644
index 7c6e1d2f2..000000000
--- a/python.d/python_modules/base.py
+++ /dev/null
@@ -1,9 +0,0 @@
-# -*- coding: utf-8 -*-
-# Description: backward compatibility with old version
-
-from bases.FrameworkServices.SimpleService import SimpleService
-from bases.FrameworkServices.UrlService import UrlService
-from bases.FrameworkServices.SocketService import SocketService
-from bases.FrameworkServices.LogService import LogService
-from bases.FrameworkServices.ExecutableService import ExecutableService
-from bases.FrameworkServices.MySQLService import MySQLService
diff --git a/python.d/redis.chart.py b/python.d/redis.chart.py
deleted file mode 100644
index bcfcf16a6..000000000
--- a/python.d/redis.chart.py
+++ /dev/null
@@ -1,200 +0,0 @@
-# -*- coding: utf-8 -*-
-# Description: redis netdata python.d module
-# Author: Pawel Krupa (paulfantom)
-
-from bases.FrameworkServices.SocketService import SocketService
-
-# default module values (can be overridden per job in `config`)
-priority = 60000
-retries = 60
-
-# default job configuration (overridden by python.d.plugin)
-# config = {'local': {
-#             'update_every': update_every,
-#             'retries': retries,
-#             'priority': priority,
-#             'host': 'localhost',
-#             'port': 6379,
-#             'unix_socket': None
-#          }}
-
-ORDER = ['operations', 'hit_rate', 'memory', 'keys', 'net', 'connections', 'clients', 'slaves', 'persistence',
-         'bgsave_now', 'bgsave_health']
-
-CHARTS = {
-    'operations': {
-        'options': [None, 'Redis Operations', 'operations/s', 'operations', 'redis.operations', 'line'],
-        'lines': [
-            ['total_commands_processed', 'commands', 'incremental'],
-            ['instantaneous_ops_per_sec', 'operations', 'absolute']
-        ]},
-    'hit_rate': {
-        'options': [None, 'Redis Hit rate', 'percent', 'hits', 'redis.hit_rate', 'line'],
-        'lines': [
-            ['hit_rate', 'rate', 'absolute']
-        ]},
-    'memory': {
-        'options': [None, 'Redis Memory utilization', 'kilobytes', 'memory', 'redis.memory', 'line'],
-        'lines': [
-            ['used_memory', 'total', 'absolute', 1, 1024],
-            ['used_memory_lua', 'lua', 'absolute', 1, 1024]
-        ]},
-    'net': {
-        'options': [None, 'Redis Bandwidth', 'kilobits/s', 'network', 'redis.net', 'area'],
-        'lines': [
-            ['total_net_input_bytes', 'in', 'incremental', 8, 1024],
-            ['total_net_output_bytes', 'out', 'incremental', -8, 1024]
-        ]},
-    'keys': {
-        'options': [None, 'Redis Keys per Database', 'keys', 'keys', 'redis.keys', 'line'],
-        'lines': [
-            # lines are created dynamically in `check()` method
-        ]},
-    'connections': {
-        'options': [None, 'Redis Connections', 'connections/s', 'connections', 'redis.connections', 'line'],
-        'lines': [
-            ['total_connections_received', 'received', 'incremental', 1],
-            ['rejected_connections', 'rejected', 'incremental', -1]
-        ]},
-    'clients': {
-        'options': [None, 'Redis Clients', 'clients', 'connections', 'redis.clients', 'line'],
-        'lines': [
-            ['connected_clients', 'connected', 'absolute', 1],
-            ['blocked_clients', 'blocked', 'absolute', -1]
-        ]},
-    'slaves': {
-        'options': [None, 'Redis Slaves', 'slaves', 'replication', 'redis.slaves', 'line'],
-        'lines': [
-            ['connected_slaves', 'connected', 'absolute']
-        ]},
-    'persistence': {
-        'options': [None, 'Redis Persistence Changes Since Last Save', 'changes', 'persistence',
-                    'redis.rdb_changes', 'line'],
-        'lines': [
-            ['rdb_changes_since_last_save', 'changes', 'absolute']
-        ]},
-    'bgsave_now': {
-        'options': [None, 'Duration of the RDB Save Operation', 'seconds', 'persistence',
-                    'redis.bgsave_now', 'absolute'],
-        'lines': [
-            ['rdb_bgsave_in_progress', 'rdb save', 'absolute']
-        ]},
-    'bgsave_health': {
-        'options': [None, 'Status of the Last RDB Save Operation', 'status', 'persistence',
-                    'redis.bgsave_health', 'line'],
-        'lines': [
-            ['rdb_last_bgsave_status', 'rdb save', 'absolute']
-        ]}
-}
-
-
-class Service(SocketService):
-    def __init__(self, configuration=None, name=None):
-        SocketService.__init__(self, configuration=configuration, name=name)
-        self.order = ORDER
-        self.definitions = CHARTS
-        self._keep_alive = True
-        self.chart_name = ""
-        self.host = self.configuration.get('host', 'localhost')
-        self.port = self.configuration.get('port', 6379)
-        self.unix_socket = self.configuration.get('socket')
-        password = self.configuration.get('pass', str())
-        self.bgsave_time = 0
-        self.requests = dict(request='INFO\r\n'.encode(),
-                             password=' '.join(['AUTH', password, '\r\n']).encode() if password else None)
-        self.request = self.requests['request']
-
-    def _get_data(self):
-        """
-        Get data from socket
-        :return: dict
-        """
-        if self.requests['password']:
-            self.request = self.requests['password']
-            raw = self._get_raw_data().strip()
-            if raw != "+OK":
-                self.error("invalid password")
-                return None
-            self.request = self.requests['request']
-        response = self._get_raw_data()
-        if response is None:
-            # error has already been logged
-            return None
-
-        try:
-            parsed = response.split("\n")
-        except AttributeError:
-            self.error("response is invalid/empty")
-            return None
-
-        data = dict()
-        for line in parsed:
-            if len(line) < 5 or line[0] == '$' or line[0] == '#':
-                continue
-
-            if line.startswith('db'):
-                tmp = line.split(',')[0].replace('keys=', '')
-                record = tmp.split(':')
-                data[record[0]] = record[1]
-                continue
-
-            try:
-                t = line.split(':')
-                data[t[0]] = t[1]
-            except (IndexError, ValueError):
-                self.debug("invalid line received: " + str(line))
-
-        if not data:
-            self.error("received data doesn't have any records")
-            return None
-
-        try:
-            data['hit_rate'] = (int(data['keyspace_hits']) * 100) / (int(data['keyspace_hits'])
-                                                                     + int(data['keyspace_misses']))
-        except (KeyError, ZeroDivisionError, TypeError):
-            data['hit_rate'] = 0
-
-        if data['rdb_bgsave_in_progress'] != '0\r':
-            self.bgsave_time += self.update_every
-        else:
-            self.bgsave_time = 0
-
-        data['rdb_last_bgsave_status'] = 0 if data['rdb_last_bgsave_status'] == 'ok\r' else 1
-        data['rdb_bgsave_in_progress'] = self.bgsave_time
-
-        return data
-
-    def _check_raw_data(self, data):
-        """
-        Check if all data has been gathered from socket.
-        Parse first line containing message length and check against received message
-        :param data: str
-        :return: boolean
-        """
-        length = len(data)
-        supposed = data.split('\n')[0][1:-1]
-        offset = len(supposed) + 4  # 1 dollar sing, 1 new line character + 1 ending sequence '\r\n'
-        if not supposed.isdigit():
-            return True
-        supposed = int(supposed)
-
-        if length - offset >= supposed:
-            self.debug("received full response from redis")
-            return True
-
-        self.debug("waiting more data from redis")
-        return False
-
-    def check(self):
-        """
-        Parse configuration, check if redis is available, and dynamically create chart lines data
-        :return: boolean
-        """
-        data = self._get_data()
-        if data is None:
-            return False
-
-        for name in data:
-            if name.startswith('db'):
-                self.definitions['keys']['lines'].append([name, None, 'absolute'])
-        return True
diff --git a/python.d/samba.chart.py b/python.d/samba.chart.py
deleted file mode 100644
index 3f4fd5a12..000000000
--- a/python.d/samba.chart.py
+++ /dev/null
@@ -1,126 +0,0 @@
-# -*- coding: utf-8 -*-
-# Description:  samba netdata python.d module
-# Author: Christopher Cox <chris_cox@endlessnow.com>
-#
-# The netdata user needs to be able to be able to sudo the smbstatus program
-# without password:
-# netdata ALL=(ALL)       NOPASSWD: /usr/bin/smbstatus -P
-#
-# This makes calls to smbstatus -P
-#
-# This just looks at a couple of values out of syscall, and some from smb2.
-#
-# The Lesser Ops chart is merely a display of current counter values.  They
-# didn't seem to change much to me.  However, if you notice something changing
-# a lot there, bring one or more out into its own chart and make it incremental
-# (like find and notify... good examples).
-
-import re
-
-from bases.collection import find_binary
-from bases.FrameworkServices.ExecutableService import ExecutableService
-
-# default module values (can be overridden per job in `config`)
-update_every = 5
-priority = 60000
-retries = 60
-
-ORDER = ['syscall_rw','smb2_rw','smb2_create_close','smb2_info','smb2_find','smb2_notify','smb2_sm_count']
-
-CHARTS = {
-           'syscall_rw': {
-             'lines': [
-               ['syscall_sendfile_bytes', 'sendfile', 'incremental', 1, 1024],
-               ['syscall_recvfile_bytes', 'recvfile', 'incremental', -1, 1024]
-             ],
-             'options': [None, 'R/Ws', 'kilobytes/s', 'syscall', 'syscall.rw', 'area']
-           },
-           'smb2_rw': {
-             'lines': [
-               ['smb2_read_outbytes', 'readout', 'incremental', 1, 1024],
-               ['smb2_write_inbytes', 'writein', 'incremental', -1, 1024],
-               ['smb2_read_inbytes', 'readin', 'incremental', 1, 1024],
-               ['smb2_write_outbytes', 'writeout', 'incremental', -1, 1024]
-             ],
-             'options': [None, 'R/Ws', 'kilobytes/s', 'smb2', 'smb2.rw', 'area']
-           },
-           'smb2_create_close': {
-             'lines': [
-               ['smb2_create_count', 'create', 'incremental', 1, 1],
-               ['smb2_close_count', 'close', 'incremental', -1, 1]
-             ],
-             'options': [None, 'Create/Close', 'operations/s', 'smb2', 'smb2.create_close', 'line']
-           },
-           'smb2_info': {
-             'lines': [
-               ['smb2_getinfo_count', 'getinfo', 'incremental', 1, 1],
-               ['smb2_setinfo_count', 'setinfo', 'incremental', -1, 1]
-             ],
-             'options': [None, 'Info', 'operations/s', 'smb2', 'smb2.get_set_info', 'line']
-           },
-           'smb2_find': {
-             'lines': [
-               ['smb2_find_count', 'find', 'incremental', 1, 1]
-             ],
-             'options': [None, 'Find', 'operations/s', 'smb2', 'smb2.find', 'line']
-           },
-           'smb2_notify': {
-             'lines': [
-               ['smb2_notify_count', 'notify', 'incremental', 1, 1]
-             ],
-             'options': [None, 'Notify', 'operations/s', 'smb2', 'smb2.notify', 'line']
-           },
-           'smb2_sm_count': {
-             'lines': [
-               ['smb2_tcon_count', 'tcon', 'absolute', 1, 1],
-               ['smb2_negprot_count', 'negprot', 'absolute', 1, 1],
-               ['smb2_tdis_count', 'tdis', 'absolute', 1, 1],
-               ['smb2_cancel_count', 'cancel', 'absolute', 1, 1],
-               ['smb2_logoff_count', 'logoff', 'absolute', 1, 1],
-               ['smb2_flush_count', 'flush', 'absolute', 1, 1],
-               ['smb2_lock_count', 'lock', 'absolute', 1, 1],
-               ['smb2_keepalive_count', 'keepalive', 'absolute', 1, 1],
-               ['smb2_break_count', 'break', 'absolute', 1, 1],
-               ['smb2_sessetup_count', 'sessetup', 'absolute', 1, 1]
-             ],
-             'options': [None, 'Lesser Ops', 'count', 'smb2', 'smb2.sm_counters', 'stacked']
-           }
-         }
-
-
-class Service(ExecutableService):
-    def __init__(self, configuration=None, name=None):
-        ExecutableService.__init__(self, configuration=configuration, name=name)
-        self.order = ORDER
-        self.definitions = CHARTS
-        self.rgx_smb2 = re.compile(r'(smb2_[^:]+|syscall_.*file_bytes):\s+(\d+)')
-
-    def check(self):
-        sudo_binary, smbstatus_binary = find_binary('sudo'), find_binary('smbstatus')
-
-        if not (sudo_binary and smbstatus_binary):
-            self.error("Can\'t locate 'sudo' or 'smbstatus' binary")
-            return False
-
-        self.command = [sudo_binary, '-v']
-        err = self._get_raw_data(stderr=True)
-        if err:
-            self.error(''.join(err))
-            return False
-
-        self.command = ' '.join([sudo_binary, '-n', smbstatus_binary, '-P'])
-
-        return ExecutableService.check(self)
-
-    def _get_data(self):
-        """
-        Format data received from shell command
-        :return: dict
-        """
-        raw_data = self._get_raw_data()
-        if not raw_data:
-            return None
-
-        parsed = self.rgx_smb2.findall(' '.join(raw_data))
-
-        return dict(parsed) or None
diff --git a/registry/Makefile.am b/registry/Makefile.am
new file mode 100644
index 000000000..1cb69ed99
--- /dev/null
+++ b/registry/Makefile.am
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/registry/Makefile.in b/registry/Makefile.in
new file mode 100644
index 000000000..fded2d81f
--- /dev/null
+++ b/registry/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/registry/README.md b/registry/README.md
new file mode 100644
index 000000000..f1d125b77
--- /dev/null
+++ b/registry/README.md
@@ -0,0 +1,152 @@
+# netdata registry
+
+Netdata registry implements the `my-netdata` menu on netdata dashboards.
+The `my-netdata` menu lists the netdata servers you have visited.
+
+## Why?
+
+netdata provides distributed monitoring.
+
+Traditional monitoring solutions centralize all the data to provide unified dashboards across all servers. Before netdata, this was the standard practice. However it has a few issues:
+
+1. due to the resources required, the number of metrics collected is limited.
+2. for the same reason, the data collection frequency is not that high, at best it will be once every 10 or 15 seconds, at worst every 5 or 10 mins.
+2. the central monitoring solution needs dedicated resources, thus becoming "another bottleneck" in the whole ecosystem. It also requires maintenance, administration, etc.
+3. most centralized monitoring solutions are usually only good for presenting *statistics of past performance* (i.e. cannot be used for real-time performance troubleshooting).
+
+Netdata has a different approach:
+
+1. data collection happens per second
+2. thousands of metrics per server are collected
+3. data do not leave the server where they are collected
+4. netdata servers do not talk to each other
+5. your browser connects all the netdata servers
+
+Using netdata, your monitoring infrastructure is embedded on each server, limiting significantly the need of additional resources. netdata is blazingly fast, very resource efficient and utilizes server resources that already exist and are spare (on each server). This allows **scaling out** the monitoring infrastructure. 
+
+However, the netdata approach introduces a few new issues that need to be addressed, one being **the list of netdata we have installed**, i.e. the URLs our netdata servers are listening.
+
+To solve this, netdata utilizes a **central registry**. This registry, together with certain browser features, allow netdata to provide unified cross server dashboards. For example, when you jump from server to server using the `my-netdata` menu, several session settings (like the currently viewed charts, the current zoom and pan operations on the charts, etc) are propagated to the new server, so that the new dashboard will come with exactly the same view.
+
+## What is the registry?
+
+The registry keeps track of 3 entities:
+
+1. **machines**: i.e. the netdata installations (a random GUID generated by each netdata the first time it starts; we call this **machine_guid**)
+
+  For each netdata installation (each `machine_guid`) the registry keeps track of the different URLs it is accessed.
+
+2. **persons**: i.e. the web browsers accessing the netdata installations (a random GUID generated by the registry the first time it sees a new web browser; we call this **person_guid**)
+
+  For each person, the registry keeps track of the netdata installations it has accessed and their URLs.
+
+3. **URLs** of netdata installations (as seen by the web browsers)
+
+  For each URL, the registry keeps the URL and nothing more. Each URL is linked to *persons* and *machines*. The only way to find a URL is to know its **machine_guid** or have a **person_guid** it is linked to it.
+
+## Who talks to the registry?
+
+Your web browser **only**! Check here if this is against your policies: [how to not send any information to a thirdparty server](https://github.com/netdata/netdata/wiki/netdata-security#registry-or-how-to-not-send-any-information-to-a-thirdparty-server)
+
+Your netdata servers do not talk to the registry. This is a UML diagram of its operation:
+
+![registry](https://cloud.githubusercontent.com/assets/2662304/19448565/11a70632-94ab-11e6-9d80-f410b4acb797.png)
+
+## What data the registry maintains?
+
+Its database contains:
+
+- **random person GUIDs** (generated by the registry as a browser cookie)
+- **random machine GUIDs** (generated by each netdata server on its first run), including the hostname of the server netdata is running (without the domain)
+- **URLs** (the base URL for accessing a netdata server, as seen by the web browser)
+
+For *persons* and *machines*, the registry keeps links to *URLs*, each link with 2 timestamps (first time seen, last time seen) and a counter (number of times it has been seen).
+
+## Which is the default registry?
+
+`https://registry.my-netdata.io`, which is currently served by `https://london.my-netdata.io`. This registry listens to both HTTP and HTTPS requests but the default is HTTPS.
+
+#### Can this registry handle the global load of netdata installations?
+
+Yeap! The registry can handle 50.000 - 100.000 requests **per second per core** (depending on the type of CPU, the computer's memory bandwidth, etc). 50.000 is on J1900 (celeron 2Ghz).
+
+We believe, it can do it...
+
+## Every netdata can be a registry
+
+Yes, you read correct, **every netdata can be a registry**. Just pick one and configure it.
+
+**To turn any netdata into a registry**, edit `/etc/netdata/netdata.conf` and set:
+
+```
+[registry]
+    enabled = yes
+    registry to announce = http://your.registry:19999
+```
+
+Restart your netdata to activate it.
+
+Then, you need to tell **all your other netdata servers to advertise your registry**, instead of the default. To do this, on each of your netdata servers, edit `/etc/netdata/netdata.conf` and set:
+
+```
+[registry]
+    enabled = no
+    registry to announce = http://your.registry:19999
+```
+
+Note that we have not enabled the registry on the other servers. Only one netdata (the registry) needs `[registry].enabled = yes`.
+
+This is it. You have your registry now.
+
+You may also want to give your server different names under the **my-netdata** menu (i.e. to have them sorted / grouped). You can change its registry name, by setting on each netdata server:
+
+```
+[registry]
+    registry hostname = Group1 - Master DB
+```
+
+So this server will appear in **my-netdata** as `Group1 - Master DB`. The max name length is 50 characters.
+
+#### limiting access to the registry
+
+netdata v1.9+ support limiting access to the registry from given IPs, like this:
+```
+[registry]
+    allow from = *
+```
+
+`allow from` settings are [netdata simple patterns](https://github.com/netdata/netdata/wiki/Configuration#netdata-simple-patterns): string matches that use `*` as wildcard (any number of times) and a `!` prefix for a negative match. So: `allow from = !10.1.2.3 10.*` will allow all IPs in `10.*` except `10.1.2.3`. The order is important: left to right, the first positive or negative match is used.
+
+Keep in mind that connections to netdata API ports are filtered by `[web].allow connections from`. So, IPs allowed by `[registry].allow from` should also be allowed by `[web].allow connection from`.
+
+#### Where is the registry database stored?
+
+`/var/lib/netdata/registry/*.db`
+
+There can be up to 2 files:
+
+- `registry-log.db`, the transaction log
+
+    all incoming requests that affect the registry are saved in this file in real-time.
+
+- `registry.db`, the database
+
+    every `[registry].registry save db every new entries` entries in `registry-log.db`, netdata will save its database to `registry.db` and empty `registry-log.db`.
+
+Both files are machine readable text files.
+
+## The future
+
+The registry opens a whole world of new possibilities for netdata. Check here what we think: https://github.com/netdata/netdata/issues/416
+
+## Troubleshooting the registry
+
+The registry URL should be set to the URL of a netdata dashboard. This server has to have `[registry].enabled = yes`. So, accessing the registry URL directly with your web browser, should present the dashboard of the netdata operating the registry.
+
+To use the registry, your web browser needs to support **third party cookies**, since the cookies are set by the registry while you are browsing the dashboard of another netdata server. The registry, the first time it sees a new web browser it tries to figure if the web browser has cookies enabled or not. It does this by setting a cookie and redirecting the browser back to itself hoping that it will receive the cookie. If it does not receive the cookie, the registry will keep redirecting your web browser back to itself, which after a few redirects will fail with an error like this:
+
+```
+ERROR 409: Cannot ACCESS netdata registry: https://registry.my-netdata.io responded with: {"status":"redirect","registry":"https://registry.my-netdata.io"}
+```
+
+This error is printed on your web browser console (press F12 on your browser to show it).
diff --git a/src/registry.c b/registry/registry.c
index bbc2ef366..4f97eb58f 100644
--- a/src/registry.c
+++ b/registry/registry.c
@@ -1,5 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
 
+#include "../daemon/common.h"
 #include "registry_internals.h"
 
 #define REGISTRY_STATUS_OK "ok"
diff --git a/src/registry.h b/registry/registry.h
index 9aa241564..ab36de014 100644
--- a/src/registry.h
+++ b/registry/registry.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
 /*
  * netdata registry
  *
@@ -45,10 +46,11 @@
 //      (i.e. start tracking them only when they access a non-demo machine)
 //    - [DONE] do not track custom dashboards by default
 
-
 #ifndef NETDATA_REGISTRY_H
 #define NETDATA_REGISTRY_H 1
 
+#include "../daemon/common.h"
+
 #define NETDATA_REGISTRY_COOKIE_NAME "netdata_registry_id"
 
 // initialize the registry
diff --git a/src/registry_db.c b/registry/registry_db.c
index de6c634c3..d8e2bbd8d 100644
--- a/src/registry_db.c
+++ b/registry/registry_db.c
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../daemon/common.h"
 #include "registry_internals.h"
 
 int registry_db_should_be_saved(void) {
diff --git a/src/registry_init.c b/registry/registry_init.c
index 654f66d12..d3e0420d2 100644
--- a/src/registry_init.c
+++ b/registry/registry_init.c
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../daemon/common.h"
 #include "registry_internals.h"
 
 int registry_init(void) {
diff --git a/src/registry_internals.c b/registry/registry_internals.c
index 44b0a1513..b54b90142 100644
--- a/src/registry_internals.c
+++ b/registry/registry_internals.c
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../daemon/common.h"
 #include "registry_internals.h"
 
 struct registry registry;
diff --git a/src/registry_internals.h b/registry/registry_internals.h
index cceaf292b..baa2dc09d 100644
--- a/src/registry_internals.h
+++ b/registry/registry_internals.h
@@ -1,7 +1,9 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 #ifndef NETDATA_REGISTRY_INTERNALS_H_H
-#define NETDATA_REGISTRY_INTERNALS_H_H
+#define NETDATA_REGISTRY_INTERNALS_H_H 1
+
+#include "registry.h"
 
 #define REGISTRY_URL_FLAGS_DEFAULT 0x00
 #define REGISTRY_URL_FLAGS_EXPIRED 0x01
diff --git a/src/registry_log.c b/registry/registry_log.c
index cca43b09f..e0e58ede3 100644
--- a/src/registry_log.c
+++ b/registry/registry_log.c
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../daemon/common.h"
 #include "registry_internals.h"
 
 void registry_log(char action, REGISTRY_PERSON *p, REGISTRY_MACHINE *m, REGISTRY_URL *u, char *name) {
diff --git a/src/registry_machine.c b/registry/registry_machine.c
index 6dc8200d3..8dbeb8ea6 100644
--- a/src/registry_machine.c
+++ b/registry/registry_machine.c
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../daemon/common.h"
 #include "registry_internals.h"
 
 // ----------------------------------------------------------------------------
diff --git a/src/registry_machine.h b/registry/registry_machine.h
index be824d168..77ab5aaf5 100644
--- a/src/registry_machine.h
+++ b/registry/registry_machine.h
@@ -1,5 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_REGISTRY_MACHINE_H
-#define NETDATA_REGISTRY_MACHINE_H
+#define NETDATA_REGISTRY_MACHINE_H 1
 
 #include "registry_internals.h"
 
diff --git a/src/registry_person.c b/registry/registry_person.c
index d8b6cd98a..53e3f47f4 100644
--- a/src/registry_person.c
+++ b/registry/registry_person.c
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../daemon/common.h"
 #include "registry_internals.h"
 
 // ----------------------------------------------------------------------------
diff --git a/src/registry_person.h b/registry/registry_person.h
index 5f6cc2443..30e9cb513 100644
--- a/src/registry_person.h
+++ b/registry/registry_person.h
@@ -1,5 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_REGISTRY_PERSON_H
-#define NETDATA_REGISTRY_PERSON_H
+#define NETDATA_REGISTRY_PERSON_H 1
 
 #include "registry_internals.h"
 
diff --git a/src/registry_url.c b/registry/registry_url.c
index 52d36a898..6a7106458 100644
--- a/src/registry_url.c
+++ b/registry/registry_url.c
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../daemon/common.h"
 #include "registry_internals.h"
 
 // ----------------------------------------------------------------------------
diff --git a/src/registry_url.h b/registry/registry_url.h
index 5ac52f5a5..c684f1c35 100644
--- a/src/registry_url.h
+++ b/registry/registry_url.h
@@ -1,5 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_REGISTRY_URL_H
-#define NETDATA_REGISTRY_URL_H
+#define NETDATA_REGISTRY_URL_H 1
 
 #include "registry_internals.h"
 
diff --git a/src/Makefile.am b/src/Makefile.am
deleted file mode 100644
index df174cbd1..000000000
--- a/src/Makefile.am
+++ /dev/null
@@ -1,307 +0,0 @@
-#
-# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
-#
-MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
-
-AM_CPPFLAGS = \
-	-DVARLIB_DIR="\"$(varlibdir)\"" \
-	-DCACHE_DIR="\"$(cachedir)\"" \
-	-DCONFIG_DIR="\"$(configdir)\"" \
-	-DLOG_DIR="\"$(logdir)\"" \
-	-DPLUGINS_DIR="\"$(pluginsdir)\"" \
-	-DRUN_DIR="\"$(localstatedir)/run/netdata\"" \
-	-DWEB_DIR="\"$(webdir)\"" \
-	$(NULL)
-
-AM_CFLAGS = \
-	$(OPTIONAL_MATH_CFLAGS) \
-	$(OPTIONAL_NFACCT_CLFAGS) \
-	$(OPTIONAL_ZLIB_CFLAGS) \
-	$(OPTIONAL_UUID_CFLAGS) \
-	$(OPTIONAL_LIBCAP_CFLAGS) \
-	$(OPTIONAL_IPMIMONITORING_CFLAGS)\
-	$(NULL)
-
-sbin_PROGRAMS = netdata
-dist_cache_DATA = .keep
-dist_varlib_DATA = .keep
-dist_registry_DATA = .keep
-dist_log_DATA = .keep
-plugins_PROGRAMS =
-
-if ENABLE_PLUGIN_APPS
-plugins_PROGRAMS += apps.plugin
-endif
-
-if ENABLE_PLUGIN_FREEIPMI
-plugins_PROGRAMS += freeipmi.plugin
-endif
-
-if ENABLE_PLUGIN_CGROUP_NETWORK
-plugins_PROGRAMS += cgroup-network
-endif
-
-netdata_SOURCES = \
-	adaptive_resortable_list.c \
-	adaptive_resortable_list.h \
-	appconfig.c \
-	appconfig.h \
-	avl.c \
-	avl.h \
-	backend_prometheus.c \
-	backend_prometheus.h \
-	backends.c \
-	backends.h \
-	clocks.c \
-	clocks.h \
-	common.c \
-	common.h \
-	daemon.c \
-	daemon.h \
-	dictionary.c \
-	dictionary.h \
-	eval.c \
-	eval.h \
-	global_statistics.c \
-	global_statistics.h \
-	health.c \
-	health.h \
-	health_config.c \
-	health_json.c \
-	health_log.c \
-	inlined.h \
-	locks.c \
-	locks.h \
-	log.c \
-	log.h \
-	main.c \
-	main.h \
-	plugin_checks.c \
-	plugin_checks.h \
-	plugin_idlejitter.c \
-	plugin_idlejitter.h \
-	plugins_d.c \
-	plugins_d.h \
-	popen.c \
-	popen.h \
-	procfile.c \
-	procfile.h \
-	registry.c \
-	registry.h \
-	registry_db.c \
-	registry_init.c \
-	registry_internals.c \
-	registry_internals.h \
-	registry_log.c \
-	registry_machine.c \
-	registry_machine.h \
-	registry_person.c \
-	registry_person.h \
-	registry_url.c \
-	registry_url.h \
-	rrd.c \
-	rrd.h \
-	rrd2json.c \
-	rrd2json.h \
-	rrd2json_api_old.c \
-	rrd2json_api_old.h \
-	rrdcalc.c \
-	rrdcalctemplate.c \
-	rrddim.c \
-	rrddimvar.c \
-	rrdfamily.c \
-	rrdhost.c \
-	rrdpush.c \
-	rrdpush.h \
-	rrdset.c \
-	rrdsetvar.c \
-	rrdvar.c \
-	signals.c \
-	signals.h \
-	simple_pattern.c \
-	simple_pattern.h \
-	socket.c \
-	socket.h \
-	statistical.c \
-	statistical.h \
-	statsd.c \
-	statsd.h \
-	storage_number.c \
-	storage_number.h \
-	threads.c \
-	threads.h \
-	unit_test.c \
-	unit_test.h \
-	url.c \
-	url.h \
-	web_api_old.c \
-	web_api_old.h \
-	web_api_v1.c \
-	web_api_v1.h \
-	web_buffer.c \
-	web_buffer.h \
-	web_buffer_svg.c \
-	web_buffer_svg.h \
-	web_client.c \
-	web_client.h \
-	web_server.c \
-	web_server.h \
-	$(NULL)
-
-if FREEBSD
-netdata_SOURCES += \
-	plugin_freebsd.c \
-	plugin_freebsd.h \
-	freebsd_sysctl.c \
-	freebsd_getmntinfo.c \
-	freebsd_getifaddrs.c \
-	freebsd_devstat.c \
-	zfs_common.c \
-	zfs_common.h \
-	freebsd_kstat_zfs.c \
-	freebsd_ipfw.c \
-	$(NULL)
-else
-if MACOS
-netdata_SOURCES += \
-	plugin_macos.c \
-	plugin_macos.h \
-	macos_sysctl.c \
-	macos_mach_smi.c \
-	macos_fw.c \
-	$(NULL)
-else
-netdata_SOURCES += \
-	ipc.c \
-	ipc.h \
-	plugin_nfacct.c \
-	plugin_nfacct.h \
-	plugin_proc.c \
-	plugin_proc.h \
-	plugin_proc_diskspace.c \
-	plugin_proc_diskspace.h \
-	plugin_tc.c \
-	plugin_tc.h \
-	proc_diskstats.c \
-	proc_interrupts.c \
-	proc_softirqs.c \
-	proc_loadavg.c \
-	proc_meminfo.c \
-	proc_net_dev.c \
-	proc_net_ip_vs_stats.c \
-	proc_net_netstat.c \
-	proc_net_rpc_nfs.c \
-	proc_net_rpc_nfsd.c \
-	proc_net_snmp.c \
-	proc_net_snmp6.c \
-	proc_net_sockstat.c \
-	proc_net_sockstat6.c \
-	proc_net_softnet_stat.c \
-	proc_net_stat_conntrack.c \
-	proc_net_stat_synproxy.c \
-	proc_self_mountinfo.c \
-	proc_self_mountinfo.h \
-	zfs_common.c \
-    zfs_common.h \
-	proc_spl_kstat_zfs.c \
-	proc_stat.c \
-	proc_sys_kernel_random_entropy_avail.c \
-	proc_vmstat.c \
-	proc_uptime.c \
-	sys_kernel_mm_ksm.c \
-	sys_devices_system_edac_mc.c \
-	sys_devices_system_node.c \
-	sys_fs_cgroup.c \
-	sys_fs_btrfs.c \
-	$(NULL)
-endif
-endif
-
-netdata_LDADD = \
-	$(OPTIONAL_MATH_LIBS) \
-	$(OPTIONAL_NFACCT_LIBS) \
-	$(OPTIONAL_ZLIB_LIBS) \
-	$(OPTIONAL_UUID_LIBS) \
-	$(NULL)
-
-apps_plugin_SOURCES = \
-	apps_plugin.c \
-	avl.c \
-	avl.h \
-	clocks.c \
-	clocks.h \
-	common.c \
-	common.h \
-	inlined.h \
-	locks.c \
-	locks.h \
-	log.c log.h \
-	procfile.c \
-	procfile.h \
-	threads.c \
-	threads.h \
-	web_buffer.c \
-	web_buffer.h \
-	$(NULL)
-
-if FREEBSD
-apps_plugin_SOURCES += \
-	plugin_freebsd.h \
-	$(NULL)
-else
-apps_plugin_SOURCES += \
-	adaptive_resortable_list.c \
-	adaptive_resortable_list.h \
-	$(NULL)
-endif
-
-apps_plugin_LDADD = \
-	$(OPTIONAL_MATH_LIBS) \
-	$(OPTIONAL_LIBCAP_LIBS) \
-	$(NULL)
-
-freeipmi_plugin_SOURCES = \
-	freeipmi_plugin.c \
-	clocks.c \
-	clocks.h \
-	common.c \
-	common.h \
-	inlined.h \
-	locks.c \
-	locks.h \
-	log.c log.h \
-	procfile.c \
-	procfile.h \
-	threads.c \
-	threads.h \
-	$(NULL)
-
-freeipmi_plugin_LDADD = \
-	$(OPTIONAL_IPMIMONITORING_LIBS) \
-	$(NULL)
-
-cgroup_network_SOURCES = \
-    cgroup-network.c \
-	clocks.c \
-	clocks.h \
-    common.c \
-    common.h \
-    inlined.h \
-	locks.c \
-	locks.h \
-    log.c \
-    log.h \
-	procfile.c \
-	procfile.h \
-	popen.c \
-	popen.h \
-	signals.c \
-	signals.h \
-	threads.c \
-	threads.h \
-    $(NULL)
-
-cgroup_network_LDADD = \
-	$(OPTIONAL_MATH_LIBS) \
-	$(OPTIONAL_LIBCAP_LIBS) \
-	$(NULL)
diff --git a/src/Makefile.in b/src/Makefile.in
deleted file mode 100644
index 75f85632e..000000000
--- a/src/Makefile.in
+++ /dev/null
@@ -1,1238 +0,0 @@
-# Makefile.in generated by automake 1.14.1 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994-2013 Free Software Foundation, Inc.
-
-# This Makefile.in is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-# PARTICULAR PURPOSE.
-
-@SET_MAKE@
-
-
-VPATH = @srcdir@
-am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
-am__make_running_with_option = \
-  case $${target_option-} in \
-      ?) ;; \
-      *) echo "am__make_running_with_option: internal error: invalid" \
-              "target option '$${target_option-}' specified" >&2; \
-         exit 1;; \
-  esac; \
-  has_opt=no; \
-  sane_makeflags=$$MAKEFLAGS; \
-  if $(am__is_gnu_make); then \
-    sane_makeflags=$$MFLAGS; \
-  else \
-    case $$MAKEFLAGS in \
-      *\\[\ \	]*) \
-        bs=\\; \
-        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
-          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
-    esac; \
-  fi; \
-  skip_next=no; \
-  strip_trailopt () \
-  { \
-    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
-  }; \
-  for flg in $$sane_makeflags; do \
-    test $$skip_next = yes && { skip_next=no; continue; }; \
-    case $$flg in \
-      *=*|--*) continue;; \
-        -*I) strip_trailopt 'I'; skip_next=yes;; \
-      -*I?*) strip_trailopt 'I';; \
-        -*O) strip_trailopt 'O'; skip_next=yes;; \
-      -*O?*) strip_trailopt 'O';; \
-        -*l) strip_trailopt 'l'; skip_next=yes;; \
-      -*l?*) strip_trailopt 'l';; \
-      -[dEDm]) skip_next=yes;; \
-      -[JT]) skip_next=yes;; \
-    esac; \
-    case $$flg in \
-      *$$target_option*) has_opt=yes; break;; \
-    esac; \
-  done; \
-  test $$has_opt = yes
-am__make_dryrun = (target_option=n; $(am__make_running_with_option))
-am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
-pkgdatadir = $(datadir)/@PACKAGE@
-pkgincludedir = $(includedir)/@PACKAGE@
-pkglibdir = $(libdir)/@PACKAGE@
-pkglibexecdir = $(libexecdir)/@PACKAGE@
-am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
-install_sh_DATA = $(install_sh) -c -m 644
-install_sh_PROGRAM = $(install_sh) -c
-install_sh_SCRIPT = $(install_sh) -c
-INSTALL_HEADER = $(INSTALL_DATA)
-transform = $(program_transform_name)
-NORMAL_INSTALL = :
-PRE_INSTALL = :
-POST_INSTALL = :
-NORMAL_UNINSTALL = :
-PRE_UNINSTALL = :
-POST_UNINSTALL = :
-build_triplet = @build@
-host_triplet = @host@
-sbin_PROGRAMS = netdata$(EXEEXT)
-plugins_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3)
-@ENABLE_PLUGIN_APPS_TRUE@am__append_1 = apps.plugin
-@ENABLE_PLUGIN_FREEIPMI_TRUE@am__append_2 = freeipmi.plugin
-@ENABLE_PLUGIN_CGROUP_NETWORK_TRUE@am__append_3 = cgroup-network
-@FREEBSD_TRUE@am__append_4 = \
-@FREEBSD_TRUE@	plugin_freebsd.c \
-@FREEBSD_TRUE@	plugin_freebsd.h \
-@FREEBSD_TRUE@	freebsd_sysctl.c \
-@FREEBSD_TRUE@	freebsd_getmntinfo.c \
-@FREEBSD_TRUE@	freebsd_getifaddrs.c \
-@FREEBSD_TRUE@	freebsd_devstat.c \
-@FREEBSD_TRUE@	zfs_common.c \
-@FREEBSD_TRUE@	zfs_common.h \
-@FREEBSD_TRUE@	freebsd_kstat_zfs.c \
-@FREEBSD_TRUE@	freebsd_ipfw.c \
-@FREEBSD_TRUE@	$(NULL)
-
-@FREEBSD_FALSE@@MACOS_TRUE@am__append_5 = \
-@FREEBSD_FALSE@@MACOS_TRUE@	plugin_macos.c \
-@FREEBSD_FALSE@@MACOS_TRUE@	plugin_macos.h \
-@FREEBSD_FALSE@@MACOS_TRUE@	macos_sysctl.c \
-@FREEBSD_FALSE@@MACOS_TRUE@	macos_mach_smi.c \
-@FREEBSD_FALSE@@MACOS_TRUE@	macos_fw.c \
-@FREEBSD_FALSE@@MACOS_TRUE@	$(NULL)
-
-@FREEBSD_FALSE@@MACOS_FALSE@am__append_6 = \
-@FREEBSD_FALSE@@MACOS_FALSE@	ipc.c \
-@FREEBSD_FALSE@@MACOS_FALSE@	ipc.h \
-@FREEBSD_FALSE@@MACOS_FALSE@	plugin_nfacct.c \
-@FREEBSD_FALSE@@MACOS_FALSE@	plugin_nfacct.h \
-@FREEBSD_FALSE@@MACOS_FALSE@	plugin_proc.c \
-@FREEBSD_FALSE@@MACOS_FALSE@	plugin_proc.h \
-@FREEBSD_FALSE@@MACOS_FALSE@	plugin_proc_diskspace.c \
-@FREEBSD_FALSE@@MACOS_FALSE@	plugin_proc_diskspace.h \
-@FREEBSD_FALSE@@MACOS_FALSE@	plugin_tc.c \
-@FREEBSD_FALSE@@MACOS_FALSE@	plugin_tc.h \
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diff --git a/src/appconfig.h b/src/appconfig.h
deleted file mode 100644
index 7d056e6be..000000000
--- a/src/appconfig.h
+++ /dev/null
@@ -1,74 +0,0 @@
-#ifndef NETDATA_CONFIG_H
-#define NETDATA_CONFIG_H 1
-
-#define CONFIG_FILENAME "netdata.conf"
-
-#define CONFIG_SECTION_GLOBAL   "global"
-#define CONFIG_SECTION_WEB      "web"
-#define CONFIG_SECTION_STATSD   "statsd"
-#define CONFIG_SECTION_PLUGINS  "plugins"
-#define CONFIG_SECTION_REGISTRY "registry"
-#define CONFIG_SECTION_HEALTH   "health"
-#define CONFIG_SECTION_BACKEND  "backend"
-#define CONFIG_SECTION_STREAM   "stream"
-
-// these are used to limit the configuration names and values lengths
-// they are not enforced by config.c functions (they will strdup() all strings, no matter of their length)
-#define CONFIG_MAX_NAME 1024
-#define CONFIG_MAX_VALUE 2048
-
-struct config {
-    struct section *sections;
-    netdata_mutex_t mutex;
-    avl_tree_lock index;
-};
-
-extern struct config
-        netdata_config,
-        stream_config;
-
-#define CONFIG_BOOLEAN_NO   0
-#define CONFIG_BOOLEAN_YES  1
-#define CONFIG_BOOLEAN_AUTO 2
-
-extern int appconfig_load(struct config *root, char *filename, int overwrite_used);
-
-extern char *appconfig_get(struct config *root, const char *section, const char *name, const char *default_value);
-extern long long appconfig_get_number(struct config *root, const char *section, const char *name, long long value);
-extern LONG_DOUBLE appconfig_get_float(struct config *root, const char *section, const char *name, LONG_DOUBLE value);
-extern int appconfig_get_boolean(struct config *root, const char *section, const char *name, int value);
-extern int appconfig_get_boolean_ondemand(struct config *root, const char *section, const char *name, int value);
-
-extern const char *appconfig_set(struct config *root, const char *section, const char *name, const char *value);
-extern const char *appconfig_set_default(struct config *root, const char *section, const char *name, const char *value);
-extern long long appconfig_set_number(struct config *root, const char *section, const char *name, long long value);
-extern LONG_DOUBLE appconfig_set_float(struct config *root, const char *section, const char *name, LONG_DOUBLE value);
-extern int appconfig_set_boolean(struct config *root, const char *section, const char *name, int value);
-
-extern int appconfig_exists(struct config *root, const char *section, const char *name);
-extern int appconfig_move(struct config *root, const char *section_old, const char *name_old, const char *section_new, const char *name_new);
-
-extern void appconfig_generate(struct config *root, BUFFER *wb, int only_changed);
-
-// ----------------------------------------------------------------------------
-// shortcuts for the default netdata configuration
-
-#define config_load(filename, overwrite_used) appconfig_load(&netdata_config, filename, overwrite_used)
-#define config_get(section, name, default_value) appconfig_get(&netdata_config, section, name, default_value)
-#define config_get_number(section, name, value) appconfig_get_number(&netdata_config, section, name, value)
-#define config_get_float(section, name, value) appconfig_get_float(&netdata_config, section, name, value)
-#define config_get_boolean(section, name, value) appconfig_get_boolean(&netdata_config, section, name, value)
-#define config_get_boolean_ondemand(section, name, value) appconfig_get_boolean_ondemand(&netdata_config, section, name, value)
-
-#define config_set(section, name, default_value) appconfig_set(&netdata_config, section, name, default_value)
-#define config_set_default(section, name, value) appconfig_set_default(&netdata_config, section, name, value)
-#define config_set_number(section, name, value) appconfig_set_number(&netdata_config, section, name, value)
-#define config_set_float(section, name, value) appconfig_set_float(&netdata_config, section, name, value)
-#define config_set_boolean(section, name, value) appconfig_set_boolean(&netdata_config, section, name, value)
-
-#define config_exists(section, name) appconfig_exists(&netdata_config, section, name)
-#define config_move(section_old, name_old, section_new, name_new) appconfig_move(&netdata_config, section_old, name_old, section_new, name_new)
-
-#define config_generate(buffer, only_changed) appconfig_generate(&netdata_config, buffer, only_changed)
-
-#endif /* NETDATA_CONFIG_H */
diff --git a/src/backend_prometheus.h b/src/backend_prometheus.h
deleted file mode 100644
index b1a021baa..000000000
--- a/src/backend_prometheus.h
+++ /dev/null
@@ -1,11 +0,0 @@
-//
-// Created by costa on 09/07/17.
-//
-
-#ifndef NETDATA_BACKEND_PROMETHEUS_H
-#define NETDATA_BACKEND_PROMETHEUS_H
-
-extern void rrd_stats_api_v1_charts_allmetrics_prometheus_single_host(RRDHOST *host, BUFFER *wb, const char *server, const char *prefix, uint32_t options, int help, int types, int names, int timestamps);
-extern void rrd_stats_api_v1_charts_allmetrics_prometheus_all_hosts(RRDHOST *host, BUFFER *wb, const char *server, const char *prefix, uint32_t options, int help, int types, int names, int timestamps);
-
-#endif //NETDATA_BACKEND_PROMETHEUS_H
diff --git a/src/backends.h b/src/backends.h
deleted file mode 100644
index e882f3db1..000000000
--- a/src/backends.h
+++ /dev/null
@@ -1,30 +0,0 @@
-#ifndef NETDATA_BACKENDS_H
-#define NETDATA_BACKENDS_H 1
-
-#define BACKEND_SOURCE_DATA_AS_COLLECTED 0x00000001
-#define BACKEND_SOURCE_DATA_AVERAGE      0x00000002
-#define BACKEND_SOURCE_DATA_SUM          0x00000004
-
-#define BACKEND_SOURCE_BITS (BACKEND_SOURCE_DATA_AS_COLLECTED|BACKEND_SOURCE_DATA_AVERAGE|BACKEND_SOURCE_DATA_SUM)
-
-extern int backend_send_names;
-extern int backend_update_every;
-extern uint32_t backend_options;
-extern const char *backend_prefix;
-
-extern void *backends_main(void *ptr);
-
-extern int backends_can_send_rrdset(uint32_t options, RRDSET *st);
-extern uint32_t backend_parse_data_source(const char *source, uint32_t mode);
-
-extern calculated_number backend_calculate_value_from_stored_data(
-        RRDSET *st                  // the chart
-        , RRDDIM *rd                // the dimension
-        , time_t after              // the start timestamp
-        , time_t before             // the end timestamp
-        , uint32_t options          // BACKEND_SOURCE_* bitmap
-        , time_t *first_timestamp   // the timestamp of the first point used in this response
-        , time_t *last_timestamp    // the timestamp that should be reported to backend
-);
-
-#endif /* NETDATA_BACKENDS_H */
diff --git a/src/clocks.c b/src/clocks.c
deleted file mode 100644
index 2b1c36e3f..000000000
--- a/src/clocks.c
+++ /dev/null
@@ -1,137 +0,0 @@
-#include "common.h"
-
-#ifndef HAVE_CLOCK_GETTIME
-inline int clock_gettime(clockid_t clk_id, struct timespec *ts) {
-    struct timeval tv;
-    if(unlikely(gettimeofday(&tv, NULL) == -1))
-        return -1;
-    ts->tv_sec = tv.tv_sec;
-    ts->tv_nsec = (tv.tv_usec % USEC_PER_SEC) * NSEC_PER_USEC;
-    return 0;
-}
-#endif
-
-static inline time_t now_sec(clockid_t clk_id) {
-    struct timespec ts;
-    if(unlikely(clock_gettime(clk_id, &ts) == -1))
-        return 0;
-    return ts.tv_sec;
-}
-
-static inline usec_t now_usec(clockid_t clk_id) {
-    struct timespec ts;
-    if(unlikely(clock_gettime(clk_id, &ts) == -1))
-        return 0;
-    return (usec_t)ts.tv_sec * USEC_PER_SEC + (ts.tv_nsec % NSEC_PER_SEC) / NSEC_PER_USEC;
-}
-
-static inline int now_timeval(clockid_t clk_id, struct timeval *tv) {
-    struct timespec ts;
-
-    if(unlikely(clock_gettime(clk_id, &ts) == -1)) {
-        tv->tv_sec = 0;
-        tv->tv_usec = 0;
-        return -1;
-    }
-
-    tv->tv_sec = ts.tv_sec;
-    tv->tv_usec = (suseconds_t)((ts.tv_nsec % NSEC_PER_SEC) / NSEC_PER_USEC);
-    return 0;
-}
-
-inline time_t now_realtime_sec(void) {
-    return now_sec(CLOCK_REALTIME);
-}
-
-inline usec_t now_realtime_usec(void) {
-    return now_usec(CLOCK_REALTIME);
-}
-
-inline int now_realtime_timeval(struct timeval *tv) {
-    return now_timeval(CLOCK_REALTIME, tv);
-}
-
-inline time_t now_monotonic_sec(void) {
-    return now_sec(CLOCK_MONOTONIC);
-}
-
-inline usec_t now_monotonic_usec(void) {
-    return now_usec(CLOCK_MONOTONIC);
-}
-
-inline int now_monotonic_timeval(struct timeval *tv) {
-    return now_timeval(CLOCK_MONOTONIC, tv);
-}
-
-inline time_t now_boottime_sec(void) {
-    return now_sec(CLOCK_BOOTTIME);
-}
-
-inline usec_t now_boottime_usec(void) {
-    return now_usec(CLOCK_BOOTTIME);
-}
-
-inline int now_boottime_timeval(struct timeval *tv) {
-    return now_timeval(CLOCK_BOOTTIME, tv);
-}
-
-inline usec_t timeval_usec(struct timeval *tv) {
-    return (usec_t)tv->tv_sec * USEC_PER_SEC + (tv->tv_usec % USEC_PER_SEC);
-}
-
-inline msec_t timeval_msec(struct timeval *tv) {
-    return (msec_t)tv->tv_sec * MSEC_PER_SEC + ((tv->tv_usec % USEC_PER_SEC) / MSEC_PER_SEC);
-}
-
-inline susec_t dt_usec_signed(struct timeval *now, struct timeval *old) {
-    usec_t ts1 = timeval_usec(now);
-    usec_t ts2 = timeval_usec(old);
-
-    if(likely(ts1 >= ts2)) return (susec_t)(ts1 - ts2);
-    return -((susec_t)(ts2 - ts1));
-}
-
-inline usec_t dt_usec(struct timeval *now, struct timeval *old) {
-    usec_t ts1 = timeval_usec(now);
-    usec_t ts2 = timeval_usec(old);
-    return (ts1 > ts2) ? (ts1 - ts2) : (ts2 - ts1);
-}
-
-inline void heartbeat_init(heartbeat_t *hb)
-{
-    *hb = 0ULL;
-}
-
-usec_t heartbeat_next(heartbeat_t *hb, usec_t tick)
-{
-    heartbeat_t now = now_monotonic_usec();
-    usec_t next = now - (now % tick) + tick;
-
-    while(now < next) {
-        sleep_usec(next - now);
-        now = now_monotonic_usec();
-    }
-
-    if(likely(*hb != 0ULL)) {
-        usec_t dt = now - *hb;
-        *hb = now;
-
-        if(unlikely(dt >= tick + tick / 2)) {
-            errno = 0;
-            error("heartbeat missed %llu microseconds", dt - tick);
-        }
-
-        return dt;
-    }
-    else {
-        *hb = now;
-        return 0ULL;
-    }
-}
-
-inline usec_t heartbeat_dt_usec(heartbeat_t *hb)
-{
-    if(!*hb)
-        return 0ULL;
-    return now_monotonic_usec() - *hb;
-}
diff --git a/src/health.h b/src/health.h
deleted file mode 100644
index f41571803..000000000
--- a/src/health.h
+++ /dev/null
@@ -1,438 +0,0 @@
-#ifndef NETDATA_HEALTH_H
-#define NETDATA_HEALTH_H
-
-extern int default_health_enabled;
-
-extern int rrdvar_compare(void *a, void *b);
-
-typedef enum rrdvar_type {
-    RRDVAR_TYPE_CALCULATED              = 1,
-    RRDVAR_TYPE_TIME_T                  = 2,
-    RRDVAR_TYPE_COLLECTED               = 3,
-    RRDVAR_TYPE_TOTAL                   = 4,
-    RRDVAR_TYPE_INT                     = 5,
-    RRDVAR_TYPE_CALCULATED_ALLOCATED    = 6  // a custom variable, allocated on purpose (ie. not inherited from charts)
-                                             // used only for custom host global variables
-} RRDVAR_TYPE;
-
-// the variables as stored in the variables indexes
-// there are 3 indexes:
-// 1. at each chart   (RRDSET.rrdvar_root_index)
-// 2. at each context (RRDFAMILY.rrdvar_root_index)
-// 3. at each host    (RRDHOST.rrdvar_root_index)
-typedef struct rrdvar {
-    avl avl;
-
-    char *name;
-    uint32_t hash;
-
-    RRDVAR_TYPE type;
-    void *value;
-
-    time_t last_updated;
-} RRDVAR;
-
-// variables linked to charts
-// We link variables to point to the values that are already
-// calculated / processed by the normal data collection process
-// This means, there will be no speed penalty for using
-// these variables
-
-typedef enum rrdvar_options {
-    RRDVAR_OPTION_DEFAULT    = (0 << 0),
-    RRDVAR_OPTION_ALLOCATED  = (1 << 0) // the value ptr is allocated (not a reference)
-    // future use
-} RRDVAR_OPTIONS;
-
-typedef struct rrdsetvar {
-    char *variable;                 // variable name
-    uint32_t hash;                  // variable name hash
-
-    char *key_fullid;               // chart type.chart id.variable
-    char *key_fullname;             // chart type.chart name.variable
-
-    RRDVAR_TYPE type;
-    void *value;
-
-    RRDVAR_OPTIONS options;
-
-    RRDVAR *var_local;
-    RRDVAR *var_family;
-    RRDVAR *var_host;
-    RRDVAR *var_family_name;
-    RRDVAR *var_host_name;
-
-    struct rrdset *rrdset;
-
-    struct rrdsetvar *next;
-} RRDSETVAR;
-
-
-// variables linked to individual dimensions
-// We link variables to point the values that are already
-// calculated / processed by the normal data collection process
-// This means, there will be no speed penalty for using
-// these variables
-typedef struct rrddimvar {
-    char *prefix;
-    char *suffix;
-
-    char *key_id;                   // dimension id
-    char *key_name;                 // dimension name
-    char *key_contextid;            // context + dimension id
-    char *key_contextname;          // context + dimension name
-    char *key_fullidid;             // chart type.chart id + dimension id
-    char *key_fullidname;           // chart type.chart id + dimension name
-    char *key_fullnameid;           // chart type.chart name + dimension id
-    char *key_fullnamename;         // chart type.chart name + dimension name
-
-    RRDVAR_TYPE type;
-    void *value;
-
-    RRDVAR_OPTIONS options;
-
-    RRDVAR *var_local_id;
-    RRDVAR *var_local_name;
-
-    RRDVAR *var_family_id;
-    RRDVAR *var_family_name;
-    RRDVAR *var_family_contextid;
-    RRDVAR *var_family_contextname;
-
-    RRDVAR *var_host_chartidid;
-    RRDVAR *var_host_chartidname;
-    RRDVAR *var_host_chartnameid;
-    RRDVAR *var_host_chartnamename;
-
-    struct rrddim *rrddim;
-
-    struct rrddimvar *next;
-} RRDDIMVAR;
-
-// calculated variables (defined in health configuration)
-// These aggregate time-series data at fixed intervals
-// (defined in their update_every member below)
-// They increase the overhead of netdata.
-//
-// These calculations are allocated and linked (->next)
-// under RRDHOST.
-// Then are also linked to RRDSET (of course only when the
-// chart is found, via ->rrdset_next and ->rrdset_prev).
-// This double-linked list is maintained sorted at all times
-// having as RRDSET.calculations the RRDCALC to be processed
-// next.
-
-#define RRDCALC_FLAG_DB_ERROR              0x00000001
-#define RRDCALC_FLAG_DB_NAN                0x00000002
-/* #define RRDCALC_FLAG_DB_STALE           0x00000004 */
-#define RRDCALC_FLAG_CALC_ERROR            0x00000008
-#define RRDCALC_FLAG_WARN_ERROR            0x00000010
-#define RRDCALC_FLAG_CRIT_ERROR            0x00000020
-#define RRDCALC_FLAG_RUNNABLE              0x00000040
-#define RRDCALC_FLAG_NO_CLEAR_NOTIFICATION 0x80000000
-
-typedef struct rrdcalc {
-    uint32_t id;                    // the unique id of this alarm
-    uint32_t next_event_id;         // the next event id that will be used for this alarm
-
-    char *name;                     // the name of this alarm
-    uint32_t hash;      
-
-    char *exec;                     // the command to execute when this alarm switches state
-    char *recipient;                // the recipient of the alarm (the first parameter to exec)
-
-    char *chart;                    // the chart id this should be linked to
-    uint32_t hash_chart;
-
-    char *source;                   // the source of this alarm
-    char *units;                    // the units of the alarm
-    char *info;                     // a short description of the alarm
-
-    int update_every;               // update frequency for the alarm
-
-    // the red and green threshold of this alarm (to be set to the chart)
-    calculated_number green;
-    calculated_number red;
-
-    // ------------------------------------------------------------------------
-    // database lookup settings
-
-    char *dimensions;               // the chart dimensions
-    int group;                      // grouping method: average, max, etc.
-    int before;                     // ending point in time-series
-    int after;                      // starting point in time-series
-    uint32_t options;               // calculation options
-
-    // ------------------------------------------------------------------------
-    // expressions related to the alarm
-
-    EVAL_EXPRESSION *calculation;   // expression to calculate the value of the alarm
-    EVAL_EXPRESSION *warning;       // expression to check the warning condition
-    EVAL_EXPRESSION *critical;      // expression to check the critical condition
-
-    // ------------------------------------------------------------------------
-    // notification delay settings
-
-    int delay_up_duration;         // duration to delay notifications when alarm raises
-    int delay_down_duration;       // duration to delay notifications when alarm lowers
-    int delay_max_duration;        // the absolute max delay to apply to this alarm
-    float delay_multiplier;        // multiplier for all delays when alarms switch status
-                                   // while now < delay_up_to
-
-    // ------------------------------------------------------------------------
-    // runtime information
-
-    RRDCALC_STATUS status;          // the current status of the alarm
-
-    calculated_number value;        // the current value of the alarm
-    calculated_number old_value;    // the previous value of the alarm
-
-    uint32_t rrdcalc_flags;         // check RRDCALC_FLAG_*
-
-    time_t last_updated;            // the last update timestamp of the alarm
-    time_t next_update;             // the next update timestamp of the alarm
-    time_t last_status_change;      // the timestamp of the last time this alarm changed status
-
-    time_t db_after;                // the first timestamp evaluated by the db lookup
-    time_t db_before;               // the last timestamp evaluated by the db lookup
-
-    time_t delay_up_to_timestamp;   // the timestamp up to which we should delay notifications
-    int delay_up_current;           // the current up notification delay duration
-    int delay_down_current;         // the current down notification delay duration
-    int delay_last;                 // the last delay we used
-
-    // ------------------------------------------------------------------------
-    // variables this alarm exposes to the rest of the alarms
-
-    RRDVAR *local;
-    RRDVAR *family;
-    RRDVAR *hostid;
-    RRDVAR *hostname;
-
-    // ------------------------------------------------------------------------
-    // the chart this alarm it is linked to
-
-    struct rrdset *rrdset;
-
-    // linking of this alarm on its chart
-    struct rrdcalc *rrdset_next;
-    struct rrdcalc *rrdset_prev;
-
-    struct rrdcalc *next;
-} RRDCALC;
-
-#define RRDCALC_HAS_DB_LOOKUP(rc) ((rc)->after)
-
-// RRDCALCTEMPLATE
-// these are to be applied to charts found dynamically
-// based on their context.
-typedef struct rrdcalctemplate {
-    char *name;
-    uint32_t hash_name;
-
-    char *exec;
-    char *recipient;
-
-    char *context;
-    uint32_t hash_context;
-
-    char *family_match;
-    SIMPLE_PATTERN *family_pattern;
-
-    char *source;                   // the source of this alarm
-    char *units;                    // the units of the alarm
-    char *info;                     // a short description of the alarm
-
-    int update_every;               // update frequency for the alarm
-
-    // the red and green threshold of this alarm (to be set to the chart)
-    calculated_number green;
-    calculated_number red;
-
-    // ------------------------------------------------------------------------
-    // database lookup settings
-
-    char *dimensions;               // the chart dimensions
-    int group;                      // grouping method: average, max, etc.
-    int before;                     // ending point in time-series
-    int after;                      // starting point in time-series
-    uint32_t options;               // calculation options
-
-    // ------------------------------------------------------------------------
-    // notification delay settings
-
-    int delay_up_duration;         // duration to delay notifications when alarm raises
-    int delay_down_duration;       // duration to delay notifications when alarm lowers
-    int delay_max_duration;        // the absolute max delay to apply to this alarm
-    float delay_multiplier;        // multiplier for all delays when alarms switch status
-
-    // ------------------------------------------------------------------------
-    // expressions related to the alarm
-
-    EVAL_EXPRESSION *calculation;
-    EVAL_EXPRESSION *warning;
-    EVAL_EXPRESSION *critical;
-
-    struct rrdcalctemplate *next;
-} RRDCALCTEMPLATE;
-
-#define RRDCALCTEMPLATE_HAS_CALCULATION(rt) ((rt)->after)
-
-#define HEALTH_ENTRY_FLAG_PROCESSED             0x00000001
-#define HEALTH_ENTRY_FLAG_UPDATED               0x00000002
-#define HEALTH_ENTRY_FLAG_EXEC_RUN              0x00000004
-#define HEALTH_ENTRY_FLAG_EXEC_FAILED           0x00000008
-#define HEALTH_ENTRY_FLAG_SAVED                 0x10000000
-#define HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION 0x80000000
-
-typedef struct alarm_entry {
-    uint32_t unique_id;
-    uint32_t alarm_id;
-    uint32_t alarm_event_id;
-
-    time_t when;
-    time_t duration;
-    time_t non_clear_duration;
-
-    char *name;
-    uint32_t hash_name;
-
-    char *chart;
-    uint32_t hash_chart;
-
-    char *family;
-
-    char *exec;
-    char *recipient;
-    time_t exec_run_timestamp;
-    int exec_code;
-
-    char *source;
-    char *units;
-    char *info;
-
-    calculated_number old_value;
-    calculated_number new_value;
-
-    char *old_value_string;
-    char *new_value_string;
-
-    RRDCALC_STATUS old_status;
-    RRDCALC_STATUS new_status;
-
-    uint32_t flags;
-
-    int delay;
-    time_t delay_up_to_timestamp;
-
-    uint32_t updated_by_id;
-    uint32_t updates_id;
-    
-    struct alarm_entry *next;
-} ALARM_ENTRY;
-
-typedef struct alarm_log {
-    uint32_t next_log_id;
-    uint32_t next_alarm_id;
-    unsigned int count;
-    unsigned int max;
-    ALARM_ENTRY *alarms;
-    netdata_rwlock_t alarm_log_rwlock;
-} ALARM_LOG;
-
-#include "rrd.h"
-
-extern void rrdsetvar_rename_all(RRDSET *st);
-extern RRDSETVAR *rrdsetvar_create(RRDSET *st, const char *variable, RRDVAR_TYPE type, void *value, RRDVAR_OPTIONS options);
-extern void rrdsetvar_free(RRDSETVAR *rs);
-
-extern void rrddimvar_rename_all(RRDDIM *rd);
-extern RRDDIMVAR *rrddimvar_create(RRDDIM *rd, RRDVAR_TYPE type, const char *prefix, const char *suffix, void *value, RRDVAR_OPTIONS options);
-extern void rrddimvar_free(RRDDIMVAR *rs);
-
-extern void rrdsetcalc_link_matching(RRDSET *st);
-extern void rrdsetcalc_unlink(RRDCALC *rc);
-extern void rrdcalctemplate_link_matching(RRDSET *st);
-extern RRDCALC *rrdcalc_find(RRDSET *st, const char *name);
-
-extern void health_init(void);
-extern void *health_main(void *ptr);
-
-extern void health_reload(void);
-
-extern int health_variable_lookup(const char *variable, uint32_t hash, RRDCALC *rc, calculated_number *result);
-extern void health_alarms2json(RRDHOST *host, BUFFER *wb, int all);
-extern void health_alarm_log2json(RRDHOST *host, BUFFER *wb, uint32_t after);
-
-void health_api_v1_chart_variables2json(RRDSET *st, BUFFER *buf);
-
-extern RRDVAR *rrdvar_custom_host_variable_create(RRDHOST *host, const char *name);
-extern void rrdvar_custom_host_variable_set(RRDHOST *host, RRDVAR *rv, calculated_number value);
-
-extern RRDSETVAR *rrdsetvar_custom_chart_variable_create(RRDSET *st, const char *name);
-extern void rrdsetvar_custom_chart_variable_set(RRDSETVAR *rv, calculated_number value);
-
-extern void rrdvar_free_remaining_variables(RRDHOST *host, avl_tree_lock *tree_lock);
-
-extern const char *rrdcalc_status2string(RRDCALC_STATUS status);
-
-
-extern int health_alarm_log_open(RRDHOST *host);
-extern void health_alarm_log_close(RRDHOST *host);
-extern void health_log_rotate(RRDHOST *host);
-extern void health_alarm_log_save(RRDHOST *host, ALARM_ENTRY *ae);
-extern ssize_t health_alarm_log_read(RRDHOST *host, FILE *fp, const char *filename);
-extern void health_alarm_log_load(RRDHOST *host);
-extern void health_alarm_log(
-        RRDHOST *host,
-        uint32_t alarm_id,
-        uint32_t alarm_event_id,
-        time_t when,
-        const char *name,
-        const char *chart,
-        const char *family,
-        const char *exec,
-        const char *recipient,
-        time_t duration,
-        calculated_number old_value,
-        calculated_number new_value,
-        RRDCALC_STATUS old_status,
-        RRDCALC_STATUS new_status,
-        const char *source,
-        const char *units,
-        const char *info,
-        int delay,
-        uint32_t flags
-);
-
-extern void health_readdir(RRDHOST *host, const char *path);
-extern char *health_config_dir(void);
-extern void health_reload_host(RRDHOST *host);
-extern void health_alarm_log_free(RRDHOST *host);
-
-extern void rrdcalc_free(RRDCALC *rc);
-extern void rrdcalc_unlink_and_free(RRDHOST *host, RRDCALC *rc);
-
-extern void rrdcalctemplate_free(RRDCALCTEMPLATE *rt);
-extern void rrdcalctemplate_unlink_and_free(RRDHOST *host, RRDCALCTEMPLATE *rt);
-
-extern int  rrdvar_callback_for_all_host_variables(RRDHOST *host, int (*callback)(void *rrdvar, void *data), void *data);
-
-#ifdef NETDATA_HEALTH_INTERNALS
-#define RRDVAR_MAX_LENGTH 1024
-
-extern int rrdcalc_exists(RRDHOST *host, const char *chart, const char *name, uint32_t hash_chart, uint32_t hash_name);
-extern uint32_t rrdcalc_get_unique_id(RRDHOST *host, const char *chart, const char *name, uint32_t *next_event_id);
-extern int rrdvar_fix_name(char *variable);
-
-extern RRDCALC *rrdcalc_create(RRDHOST *host, RRDCALCTEMPLATE *rt, const char *chart);
-extern void rrdcalc_create_part2(RRDHOST *host, RRDCALC *rc);
-
-extern RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, RRDVAR_TYPE type, void *value);
-extern void rrdvar_free(RRDHOST *host, avl_tree_lock *tree, RRDVAR *rv);
-
-extern void health_alarm_log_free_one_nochecks_nounlink(ALARM_ENTRY *ae);
-
-#endif // NETDATA_HEALTH_INTERNALS
-
-#endif //NETDATA_HEALTH_H
diff --git a/src/ipc.h b/src/ipc.h
deleted file mode 100644
index 04f9df5cd..000000000
--- a/src/ipc.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef NETDATA_PLUGIN_IPC_H
-#define NETDATA_PLUGIN_IPC_H 1
-
-extern int do_ipc(int update_every, usec_t dt);
-
-#endif /* NETDATA_PLUGIN_IPC_H */
-
diff --git a/src/plugin_checks.h b/src/plugin_checks.h
deleted file mode 100644
index 05a40bea0..000000000
--- a/src/plugin_checks.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef NETDATA_PLUGIN_CHECKS_H
-#define NETDATA_PLUGIN_CHECKS_H 1
-
-#ifdef NETDATA_INTERNAL_CHECKS
-void *checks_main(void *ptr);
-#endif // NETDATA_INTERNAL_CHECKS
-
-#endif /* NETDATA_PLUGIN_PROC_H */
diff --git a/src/plugin_freebsd.h b/src/plugin_freebsd.h
deleted file mode 100644
index 0a6f40c15..000000000
--- a/src/plugin_freebsd.h
+++ /dev/null
@@ -1,130 +0,0 @@
-#ifndef NETDATA_PLUGIN_FREEBSD_H
-#define NETDATA_PLUGIN_FREEBSD_H 1
-
-#include <sys/sysctl.h>
-
-#define KILO_FACTOR 1024
-#define MEGA_FACTOR 1048576     // 1024 * 1024
-#define GIGA_FACTOR 1073741824  // 1024 * 1024 * 1024
-
-#define MAX_INT_DIGITS 10 // maximum number of digits for int
-
-void *freebsd_main(void *ptr);
-
-extern int freebsd_plugin_init();
-
-extern int do_vm_loadavg(int update_every, usec_t dt);
-extern int do_vm_vmtotal(int update_every, usec_t dt);
-extern int do_kern_cp_time(int update_every, usec_t dt);
-extern int do_kern_cp_times(int update_every, usec_t dt);
-extern int do_dev_cpu_temperature(int update_every, usec_t dt);
-extern int do_dev_cpu_0_freq(int update_every, usec_t dt);
-extern int do_hw_intcnt(int update_every, usec_t dt);
-extern int do_vm_stats_sys_v_intr(int update_every, usec_t dt);
-extern int do_vm_stats_sys_v_soft(int update_every, usec_t dt);
-extern int do_vm_stats_sys_v_swtch(int update_every, usec_t dt);
-extern int do_vm_stats_sys_v_forks(int update_every, usec_t dt);
-extern int do_vm_swap_info(int update_every, usec_t dt);
-extern int do_system_ram(int update_every, usec_t dt);
-extern int do_vm_stats_sys_v_swappgs(int update_every, usec_t dt);
-extern int do_vm_stats_sys_v_pgfaults(int update_every, usec_t dt);
-extern int do_kern_ipc_sem(int update_every, usec_t dt);
-extern int do_kern_ipc_shm(int update_every, usec_t dt);
-extern int do_kern_ipc_msq(int update_every, usec_t dt);
-extern int do_uptime(int update_every, usec_t dt);
-extern int do_net_isr(int update_every, usec_t dt);
-extern int do_net_inet_tcp_states(int update_every, usec_t dt);
-extern int do_net_inet_tcp_stats(int update_every, usec_t dt);
-extern int do_net_inet_udp_stats(int update_every, usec_t dt);
-extern int do_net_inet_icmp_stats(int update_every, usec_t dt);
-extern int do_net_inet_ip_stats(int update_every, usec_t dt);
-extern int do_net_inet6_ip6_stats(int update_every, usec_t dt);
-extern int do_net_inet6_icmp6_stats(int update_every, usec_t dt);
-extern int do_getifaddrs(int update_every, usec_t dt);
-extern int do_getmntinfo(int update_every, usec_t dt);
-extern int do_kern_devstat(int update_every, usec_t dt);
-extern int do_kstat_zfs_misc_arcstats(int update_every, usec_t dt);
-extern int do_kstat_zfs_misc_zio_trim(int update_every, usec_t dt);
-extern int do_ipfw(int update_every, usec_t dt);
-
-#define GETSYSCTL_MIB(name, mib) getsysctl_mib(name, mib, sizeof(mib)/sizeof(int))
-
-static inline int getsysctl_mib(const char *name, int *mib, size_t len)
-{
-    size_t nlen = len;
-
-    if (unlikely(sysctlnametomib(name, mib, &nlen) == -1)) {
-        error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
-        return 1;
-    }
-    if (unlikely(nlen != len)) {
-        error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
-        return 1;
-    }
-    return 0;
-}
-
-#define GETSYSCTL_SIMPLE(name, mib, var) getsysctl_simple(name, mib, sizeof(mib)/sizeof(int), &(var), sizeof(var))
-#define GETSYSCTL_WSIZE(name, mib, var, size) getsysctl_simple(name, mib, sizeof(mib)/sizeof(int), var, size)
-
-static inline int getsysctl_simple(const char *name, int *mib, size_t miblen, void *ptr, size_t len)
-{
-    size_t nlen = len;
-
-    if (unlikely(!mib[0]))
-        if (unlikely(getsysctl_mib(name, mib, miblen)))
-            return 1;
-
-    if (unlikely(sysctl(mib, miblen, ptr, &nlen, NULL, 0) == -1)) {
-        error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
-        return 1;
-    }
-    if (unlikely(nlen != len)) {
-        error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
-        return 1;
-    }
-
-    return 0;
-}
-
-#define GETSYSCTL_SIZE(name, mib, size) getsysctl(name, mib, sizeof(mib)/sizeof(int), NULL, &(size))
-#define GETSYSCTL(name, mib, var, size) getsysctl(name, mib, sizeof(mib)/sizeof(int), &(var), &(size))
-
-static inline int getsysctl(const char *name, int *mib, size_t miblen, void *ptr, size_t *len)
-{
-    size_t nlen = *len;
-
-    if (unlikely(!mib[0]))
-        if (unlikely(getsysctl_mib(name, mib, miblen)))
-            return 1;
-
-    if (unlikely(sysctl(mib, miblen, ptr, len, NULL, 0) == -1)) {
-        error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
-        return 1;
-    }
-    if (unlikely(ptr != NULL && nlen != *len)) {
-        error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)*len, (unsigned long)nlen);
-        return 1;
-    }
-
-    return 0;
-}
-
-#define GETSYSCTL_BY_NAME(name, var) getsysctl_by_name(name, &(var), sizeof(var))
-
-static inline int getsysctl_by_name(const char *name, void *ptr, size_t len)
-{
-    size_t nlen = len;
-
-    if (unlikely(sysctlbyname(name, ptr, &nlen, NULL, 0) == -1)) {
-        error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
-        return 1;
-    }
-    if (unlikely(nlen != len)) {
-        error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
-        return 1;
-    }
-    return 0;
-}
-
-#endif /* NETDATA_PLUGIN_FREEBSD_H */
diff --git a/src/plugin_idlejitter.h b/src/plugin_idlejitter.h
deleted file mode 100644
index dc82f052f..000000000
--- a/src/plugin_idlejitter.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef NETDATA_PLUGIN_IDLEJITTER_H
-#define NETDATA_PLUGIN_IDLEJITTER_H 1
-
-extern void *cpuidlejitter_main(void *ptr);
-
-#endif /* NETDATA_PLUGIN_IDLEJITTER_H */
diff --git a/src/plugin_macos.h b/src/plugin_macos.h
deleted file mode 100644
index 6ccf3e861..000000000
--- a/src/plugin_macos.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef NETDATA_PLUGIN_MACOS_H
-#define NETDATA_PLUGIN_MACOS_H 1
-
-void *macos_main(void *ptr);
-
-#define GETSYSCTL_BY_NAME(name, var) getsysctl_by_name(name, &(var), sizeof(var))
-
-extern int getsysctl_by_name(const char *name, void *ptr, size_t len);
-
-extern int do_macos_sysctl(int update_every, usec_t dt);
-extern int do_macos_mach_smi(int update_every, usec_t dt);
-extern int do_macos_iokit(int update_every, usec_t dt);
-
-#endif /* NETDATA_PLUGIN_MACOS_H */
diff --git a/src/plugin_nfacct.h b/src/plugin_nfacct.h
deleted file mode 100644
index 88a3a9230..000000000
--- a/src/plugin_nfacct.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef NETDATA_NFACCT_H
-#define NETDATA_NFACCT_H 1
-
-extern void *nfacct_main(void *ptr);
-
-#endif /* NETDATA_NFACCT_H */
-
diff --git a/src/plugin_proc_diskspace.h b/src/plugin_proc_diskspace.h
deleted file mode 100644
index dcec28f75..000000000
--- a/src/plugin_proc_diskspace.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef NETDATA_PLUGIN_PROC_DISKSPACE_H
-#define NETDATA_PLUGIN_PROC_DISKSPACE_H
-
-extern void *proc_diskspace_main(void *ptr);
-
-#endif //NETDATA_PLUGIN_PROC_DISKSPACE_H
diff --git a/src/plugin_tc.h b/src/plugin_tc.h
deleted file mode 100644
index 792c6496f..000000000
--- a/src/plugin_tc.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef NETDATA_PLUGIN_TC_H
-#define NETDATA_PLUGIN_TC_H 1
-
-extern void *tc_main(void *ptr);
-
-#endif /* NETDATA_PLUGIN_TC_H */
-
diff --git a/src/rrd2json.c b/src/rrd2json.c
deleted file mode 100644
index 24b3da340..000000000
--- a/src/rrd2json.c
+++ /dev/null
@@ -1,2059 +0,0 @@
-#include "common.h"
-
-void rrd_stats_api_v1_chart_with_data(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used)
-{
-    rrdset_rdlock(st);
-
-    buffer_sprintf(wb,
-        "\t\t{\n"
-        "\t\t\t\"id\": \"%s\",\n"
-        "\t\t\t\"name\": \"%s\",\n"
-        "\t\t\t\"type\": \"%s\",\n"
-        "\t\t\t\"family\": \"%s\",\n"
-        "\t\t\t\"context\": \"%s\",\n"
-        "\t\t\t\"title\": \"%s (%s)\",\n"
-        "\t\t\t\"priority\": %ld,\n"
-        "\t\t\t\"plugin\": \"%s\",\n"
-        "\t\t\t\"module\": \"%s\",\n"
-        "\t\t\t\"enabled\": %s,\n"
-        "\t\t\t\"units\": \"%s\",\n"
-        "\t\t\t\"data_url\": \"/api/v1/data?chart=%s\",\n"
-        "\t\t\t\"chart_type\": \"%s\",\n"
-        "\t\t\t\"duration\": %ld,\n"
-        "\t\t\t\"first_entry\": %ld,\n"
-        "\t\t\t\"last_entry\": %ld,\n"
-        "\t\t\t\"update_every\": %d,\n"
-        "\t\t\t\"dimensions\": {\n"
-        , st->id
-        , st->name
-        , st->type
-        , st->family
-        , st->context
-        , st->title, st->name
-        , st->priority
-        , st->plugin_name?st->plugin_name:""
-        , st->module_name?st->module_name:""
-        , rrdset_flag_check(st, RRDSET_FLAG_ENABLED)?"true":"false"
-        , st->units
-        , st->name
-        , rrdset_type_name(st->chart_type)
-        , st->entries * st->update_every
-        , rrdset_first_entry_t(st)
-        , rrdset_last_entry_t(st)
-        , st->update_every
-        );
-
-    unsigned long memory = st->memsize;
-
-    size_t dimensions = 0;
-    RRDDIM *rd;
-    rrddim_foreach_read(rd, st) {
-        if(rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)) continue;
-
-        memory += rd->memsize;
-
-        buffer_sprintf(
-                wb
-                , "%s"
-                        "\t\t\t\t\"%s\": { \"name\": \"%s\" }"
-                , dimensions ? ",\n" : ""
-                , rd->id
-                , rd->name
-        );
-
-        dimensions++;
-    }
-
-    if(dimensions_count) *dimensions_count += dimensions;
-    if(memory_used) *memory_used += memory;
-
-    buffer_strcat(wb, "\n\t\t\t},\n\t\t\t\"green\": ");
-    buffer_rrd_value(wb, st->green);
-    buffer_strcat(wb, ",\n\t\t\t\"red\": ");
-    buffer_rrd_value(wb, st->red);
-
-    buffer_strcat(wb, ",\n\t\t\t\"alarms\": {\n");
-    size_t alarms = 0;
-    RRDCALC *rc;
-    for(rc = st->alarms; rc ; rc = rc->rrdset_next) {
-
-        buffer_sprintf(
-                wb
-                , "%s"
-                        "\t\t\t\t\"%s\": {\n"
-                        "\t\t\t\t\t\"id\": %u,\n"
-                        "\t\t\t\t\t\"status\": \"%s\",\n"
-                        "\t\t\t\t\t\"units\": \"%s\",\n"
-                        "\t\t\t\t\t\"update_every\": %d\n"
-                        "\t\t\t\t}"
-                , (alarms) ? ",\n" : ""
-                , rc->name
-                , rc->id
-                , rrdcalc_status2string(rc->status)
-                , rc->units
-                , rc->update_every
-        );
-
-        alarms++;
-    }
-
-    buffer_sprintf(wb,
-        "\n\t\t\t}\n\t\t}"
-        );
-
-    rrdset_unlock(st);
-}
-
-void rrd_stats_api_v1_chart(RRDSET *st, BUFFER *wb) {
-    rrd_stats_api_v1_chart_with_data(st, wb, NULL, NULL);
-}
-
-void rrd_stats_api_v1_charts(RRDHOST *host, BUFFER *wb) {
-    static char *custom_dashboard_info_js_filename = NULL;
-    size_t c, dimensions = 0, memory = 0, alarms = 0;
-    RRDSET *st;
-
-    time_t now = now_realtime_sec();
-
-    if(unlikely(!custom_dashboard_info_js_filename))
-        custom_dashboard_info_js_filename = config_get(CONFIG_SECTION_WEB, "custom dashboard_info.js", "");
-
-    buffer_sprintf(wb, "{\n"
-           "\t\"hostname\": \"%s\""
-        ",\n\t\"version\": \"%s\""
-        ",\n\t\"os\": \"%s\""
-        ",\n\t\"timezone\": \"%s\""
-        ",\n\t\"update_every\": %d"
-        ",\n\t\"history\": %ld"
-        ",\n\t\"custom_info\": \"%s\""
-        ",\n\t\"charts\": {"
-        , host->hostname
-        , host->program_version
-        , host->os
-        , host->timezone
-        , host->rrd_update_every
-        , host->rrd_history_entries
-        , custom_dashboard_info_js_filename
-        );
-
-    c = 0;
-    rrdhost_rdlock(host);
-    rrdset_foreach_read(st, host) {
-        if(rrdset_is_available_for_viewers(st)) {
-            if(c) buffer_strcat(wb, ",");
-            buffer_strcat(wb, "\n\t\t\"");
-            buffer_strcat(wb, st->id);
-            buffer_strcat(wb, "\": ");
-            rrd_stats_api_v1_chart_with_data(st, wb, &dimensions, &memory);
-
-            c++;
-            st->last_accessed_time = now;
-        }
-    }
-
-    RRDCALC *rc;
-    for(rc = host->alarms; rc ; rc = rc->next) {
-        if(rc->rrdset)
-            alarms++;
-    }
-    rrdhost_unlock(host);
-
-    buffer_sprintf(wb
-                   , "\n\t}"
-                    ",\n\t\"charts_count\": %zu"
-                    ",\n\t\"dimensions_count\": %zu"
-                    ",\n\t\"alarms_count\": %zu"
-                    ",\n\t\"rrd_memory_bytes\": %zu"
-                    ",\n\t\"hosts_count\": %zu"
-                    ",\n\t\"hosts\": ["
-                   , c
-                   , dimensions
-                   , alarms
-                   , memory
-                   , rrd_hosts_available
-    );
-
-    if(unlikely(rrd_hosts_available > 1)) {
-        rrd_rdlock();
-
-        size_t found = 0;
-        RRDHOST *h;
-        rrdhost_foreach_read(h) {
-            if(!rrdhost_should_be_removed(h, host, now)) {
-                buffer_sprintf(wb
-                               , "%s\n\t\t{"
-                                "\n\t\t\t\"hostname\": \"%s\""
-                                "\n\t\t}"
-                               , (found > 0) ? "," : ""
-                               , h->hostname
-                );
-
-                found++;
-            }
-        }
-
-        rrd_unlock();
-    }
-    else {
-        buffer_sprintf(wb
-                       , "\n\t\t{"
-                        "\n\t\t\t\"hostname\": \"%s\""
-                        "\n\t\t}"
-                       , host->hostname
-        );
-    }
-
-    buffer_sprintf(wb, "\n\t]\n}\n");
-}
-
-// ----------------------------------------------------------------------------
-// BASH
-// /api/v1/allmetrics?format=bash
-
-static inline size_t shell_name_copy(char *d, const char *s, size_t usable) {
-    size_t n;
-
-    for(n = 0; *s && n < usable ; d++, s++, n++) {
-        register char c = *s;
-
-        if(unlikely(!isalnum(c))) *d = '_';
-        else *d = (char)toupper(c);
-    }
-    *d = '\0';
-
-    return n;
-}
-
-#define SHELL_ELEMENT_MAX 100
-
-void rrd_stats_api_v1_charts_allmetrics_shell(RRDHOST *host, BUFFER *wb) {
-    rrdhost_rdlock(host);
-
-    // for each chart
-    RRDSET *st;
-    rrdset_foreach_read(st, host) {
-        calculated_number total = 0.0;
-        char chart[SHELL_ELEMENT_MAX + 1];
-        shell_name_copy(chart, st->name?st->name:st->id, SHELL_ELEMENT_MAX);
-
-        buffer_sprintf(wb, "\n# chart: %s (name: %s)\n", st->id, st->name);
-        if(rrdset_is_available_for_viewers(st)) {
-            rrdset_rdlock(st);
-
-            // for each dimension
-            RRDDIM *rd;
-            rrddim_foreach_read(rd, st) {
-                if(rd->collections_counter) {
-                    char dimension[SHELL_ELEMENT_MAX + 1];
-                    shell_name_copy(dimension, rd->name?rd->name:rd->id, SHELL_ELEMENT_MAX);
-
-                    calculated_number n = rd->last_stored_value;
-
-                    if(isnan(n) || isinf(n))
-                        buffer_sprintf(wb, "NETDATA_%s_%s=\"\"      # %s\n", chart, dimension, st->units);
-                    else {
-                        if(rd->multiplier < 0 || rd->divisor < 0) n = -n;
-                        n = calculated_number_round(n);
-                        if(!rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)) total += n;
-                        buffer_sprintf(wb, "NETDATA_%s_%s=\"" CALCULATED_NUMBER_FORMAT_ZERO "\"      # %s\n", chart, dimension, n, st->units);
-                    }
-                }
-            }
-
-            total = calculated_number_round(total);
-            buffer_sprintf(wb, "NETDATA_%s_VISIBLETOTAL=\"" CALCULATED_NUMBER_FORMAT_ZERO "\"      # %s\n", chart, total, st->units);
-            rrdset_unlock(st);
-        }
-    }
-
-    buffer_strcat(wb, "\n# NETDATA ALARMS RUNNING\n");
-
-    RRDCALC *rc;
-    for(rc = host->alarms; rc ;rc = rc->next) {
-        if(!rc->rrdset) continue;
-
-        char chart[SHELL_ELEMENT_MAX + 1];
-        shell_name_copy(chart, rc->rrdset->name?rc->rrdset->name:rc->rrdset->id, SHELL_ELEMENT_MAX);
-
-        char alarm[SHELL_ELEMENT_MAX + 1];
-        shell_name_copy(alarm, rc->name, SHELL_ELEMENT_MAX);
-
-        calculated_number n = rc->value;
-
-        if(isnan(n) || isinf(n))
-            buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_VALUE=\"\"      # %s\n", chart, alarm, rc->units);
-        else {
-            n = calculated_number_round(n);
-            buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_VALUE=\"" CALCULATED_NUMBER_FORMAT_ZERO "\"      # %s\n", chart, alarm, n, rc->units);
-        }
-
-        buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_STATUS=\"%s\"\n", chart, alarm, rrdcalc_status2string(rc->status));
-    }
-
-    rrdhost_unlock(host);
-}
-
-// ----------------------------------------------------------------------------
-
-void rrd_stats_api_v1_charts_allmetrics_json(RRDHOST *host, BUFFER *wb) {
-    rrdhost_rdlock(host);
-
-    buffer_strcat(wb, "{");
-
-    size_t chart_counter = 0;
-    size_t dimension_counter = 0;
-
-    // for each chart
-    RRDSET *st;
-    rrdset_foreach_read(st, host) {
-        if(rrdset_is_available_for_viewers(st)) {
-            rrdset_rdlock(st);
-
-            buffer_sprintf(wb, "%s\n"
-                    "\t\"%s\": {\n"
-                    "\t\t\"name\":\"%s\",\n"
-                    "\t\t\"context\":\"%s\",\n"
-                    "\t\t\"units\":\"%s\",\n"
-                    "\t\t\"last_updated\": %ld,\n"
-                    "\t\t\"dimensions\": {"
-                    , chart_counter?",":""
-                    , st->id
-                    , st->name
-                    , st->context
-                    , st->units
-                    , rrdset_last_entry_t(st)
-            );
-
-            chart_counter++;
-            dimension_counter = 0;
-
-            // for each dimension
-            RRDDIM *rd;
-            rrddim_foreach_read(rd, st) {
-                if(rd->collections_counter) {
-
-                    buffer_sprintf(wb, "%s\n"
-                            "\t\t\t\"%s\": {\n"
-                            "\t\t\t\t\"name\": \"%s\",\n"
-                            "\t\t\t\t\"value\": "
-                            , dimension_counter?",":""
-                            , rd->id
-                            , rd->name
-                    );
-
-                    if(isnan(rd->last_stored_value))
-                        buffer_strcat(wb, "null");
-                    else
-                        buffer_sprintf(wb, CALCULATED_NUMBER_FORMAT, rd->last_stored_value);
-
-                    buffer_strcat(wb, "\n\t\t\t}");
-
-                    dimension_counter++;
-                }
-            }
-
-            buffer_strcat(wb, "\n\t\t}\n\t}");
-            rrdset_unlock(st);
-        }
-    }
-
-    buffer_strcat(wb, "\n}");
-    rrdhost_unlock(host);
-}
-
-// ----------------------------------------------------------------------------
-
-// RRDR dimension options
-#define RRDR_EMPTY      0x01 // the dimension contains / the value is empty (null)
-#define RRDR_RESET      0x02 // the dimension contains / the value is reset
-#define RRDR_HIDDEN     0x04 // the dimension contains / the value is hidden
-#define RRDR_NONZERO    0x08 // the dimension contains / the value is non-zero
-#define RRDR_SELECTED   0x10 // the dimension is selected
-
-// RRDR result options
-#define RRDR_RESULT_OPTION_ABSOLUTE 0x00000001
-#define RRDR_RESULT_OPTION_RELATIVE 0x00000002
-
-typedef struct rrdresult {
-    RRDSET *st;         // the chart this result refers to
-
-    uint32_t result_options;    // RRDR_RESULT_OPTION_*
-
-    int d;                  // the number of dimensions
-    long n;                 // the number of values in the arrays
-    long rows;              // the number of rows used
-
-    uint8_t *od;            // the options for the dimensions
-
-    time_t *t;              // array of n timestamps
-    calculated_number *v;   // array n x d values
-    uint8_t *o;             // array n x d options
-
-    long c;                 // current line ( -1 ~ n ), ( -1 = none, use rrdr_rows() to get number of rows )
-
-    long group;             // how many collected values were grouped for each row
-    int update_every;       // what is the suggested update frequency in seconds
-
-    calculated_number min;
-    calculated_number max;
-
-    time_t before;
-    time_t after;
-
-    int has_st_lock;        // if st is read locked by us
-} RRDR;
-
-#define rrdr_rows(r) ((r)->rows)
-
-/*
-static void rrdr_dump(RRDR *r)
-{
-    long c, i;
-    RRDDIM *d;
-
-    fprintf(stderr, "\nCHART %s (%s)\n", r->st->id, r->st->name);
-
-    for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
-        fprintf(stderr, "DIMENSION %s (%s), %s%s%s%s\n"
-                , d->id
-                , d->name
-                , (r->od[c] & RRDR_EMPTY)?"EMPTY ":""
-                , (r->od[c] & RRDR_RESET)?"RESET ":""
-                , (r->od[c] & RRDR_HIDDEN)?"HIDDEN ":""
-                , (r->od[c] & RRDR_NONZERO)?"NONZERO ":""
-                );
-    }
-
-    if(r->rows <= 0) {
-        fprintf(stderr, "RRDR does not have any values in it.\n");
-        return;
-    }
-
-    fprintf(stderr, "RRDR includes %d values in it:\n", r->rows);
-
-    // for each line in the array
-    for(i = 0; i < r->rows ;i++) {
-        calculated_number *cn = &r->v[ i * r->d ];
-        uint8_t *co = &r->o[ i * r->d ];
-
-        // print the id and the timestamp of the line
-        fprintf(stderr, "%ld %ld ", i + 1, r->t[i]);
-
-        // for each dimension
-        for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
-            if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-            if(unlikely(!(r->od[c] & RRDR_NONZERO))) continue;
-
-            if(co[c] & RRDR_EMPTY)
-                fprintf(stderr, "null ");
-            else
-                fprintf(stderr, CALCULATED_NUMBER_FORMAT " %s%s%s%s "
-                    , cn[c]
-                    , (co[c] & RRDR_EMPTY)?"E":" "
-                    , (co[c] & RRDR_RESET)?"R":" "
-                    , (co[c] & RRDR_HIDDEN)?"H":" "
-                    , (co[c] & RRDR_NONZERO)?"N":" "
-                    );
-        }
-
-        fprintf(stderr, "\n");
-    }
-}
-*/
-
-void rrdr_disable_not_selected_dimensions(RRDR *r, uint32_t options, const char *dims) {
-    rrdset_check_rdlock(r->st);
-
-    if(unlikely(!dims || !*dims || (dims[0] == '*' && dims[1] == '\0'))) return;
-
-    int match_ids = 0, match_names = 0;
-
-    if(unlikely(options & RRDR_OPTION_MATCH_IDS))
-        match_ids = 1;
-    if(unlikely(options & RRDR_OPTION_MATCH_NAMES))
-        match_names = 1;
-
-    if(likely(!match_ids && !match_names))
-        match_ids = match_names = 1;
-
-    SIMPLE_PATTERN *pattern = simple_pattern_create(dims, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT);
-
-    RRDDIM *d;
-    long c, dims_selected = 0, dims_not_hidden_not_zero = 0;
-    for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
-        if(    (match_ids   && simple_pattern_matches(pattern, d->id))
-            || (match_names && simple_pattern_matches(pattern, d->name))
-                ) {
-            r->od[c] |= RRDR_SELECTED;
-            if(unlikely(r->od[c] & RRDR_HIDDEN)) r->od[c] &= ~RRDR_HIDDEN;
-            dims_selected++;
-
-            // since the user needs this dimension
-            // make it appear as NONZERO, to return it
-            // even if the dimension has only zeros
-            // unless option non_zero is set
-            if(unlikely(!(options & RRDR_OPTION_NONZERO)))
-                r->od[c] |= RRDR_NONZERO;
-
-            // count the visible dimensions
-            if(likely(r->od[c] & RRDR_NONZERO))
-                dims_not_hidden_not_zero++;
-        }
-        else {
-            r->od[c] |= RRDR_HIDDEN;
-            if(unlikely(r->od[c] & RRDR_SELECTED)) r->od[c] &= ~RRDR_SELECTED;
-        }
-    }
-    simple_pattern_free(pattern);
-
-    // check if all dimensions are hidden
-    if(unlikely(!dims_not_hidden_not_zero && dims_selected)) {
-        // there are a few selected dimensions
-        // but they are all zero
-        // enable the selected ones
-        // to avoid returning an empty chart
-        for(c = 0, d = r->st->dimensions; d ;c++, d = d->next)
-            if(unlikely(r->od[c] & RRDR_SELECTED))
-                r->od[c] |= RRDR_NONZERO;
-    }
-}
-
-void rrdr_buffer_print_format(BUFFER *wb, uint32_t format)
-{
-    switch(format) {
-    case DATASOURCE_JSON:
-        buffer_strcat(wb, DATASOURCE_FORMAT_JSON);
-        break;
-
-    case DATASOURCE_DATATABLE_JSON:
-        buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSON);
-        break;
-
-    case DATASOURCE_DATATABLE_JSONP:
-        buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSONP);
-        break;
-
-    case DATASOURCE_JSONP:
-        buffer_strcat(wb, DATASOURCE_FORMAT_JSONP);
-        break;
-
-    case DATASOURCE_SSV:
-        buffer_strcat(wb, DATASOURCE_FORMAT_SSV);
-        break;
-
-    case DATASOURCE_CSV:
-        buffer_strcat(wb, DATASOURCE_FORMAT_CSV);
-        break;
-
-    case DATASOURCE_TSV:
-        buffer_strcat(wb, DATASOURCE_FORMAT_TSV);
-        break;
-
-    case DATASOURCE_HTML:
-        buffer_strcat(wb, DATASOURCE_FORMAT_HTML);
-        break;
-
-    case DATASOURCE_JS_ARRAY:
-        buffer_strcat(wb, DATASOURCE_FORMAT_JS_ARRAY);
-        break;
-
-    case DATASOURCE_SSV_COMMA:
-        buffer_strcat(wb, DATASOURCE_FORMAT_SSV_COMMA);
-        break;
-
-    default:
-        buffer_strcat(wb, "unknown");
-        break;
-    }
-}
-
-uint32_t rrdr_check_options(RRDR *r, uint32_t options, const char *dims)
-{
-    rrdset_check_rdlock(r->st);
-
-    (void)dims;
-
-    if(options & RRDR_OPTION_NONZERO) {
-        long i;
-
-        // commented due to #1514
-
-        //if(dims && *dims) {
-            // the caller wants specific dimensions
-            // disable NONZERO option
-            // to make sure we don't accidentally prevent
-            // the specific dimensions from being returned
-            // i = 0;
-        //}
-        //else {
-            // find how many dimensions are not zero
-            long c;
-            RRDDIM *rd;
-            for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ; c++, rd = rd->next) {
-                if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-                if(unlikely(!(r->od[c] & RRDR_NONZERO))) continue;
-                i++;
-            }
-        //}
-
-        // if with nonzero we get i = 0 (no dimensions will be returned)
-        // disable nonzero to show all dimensions
-        if(!i) options &= ~RRDR_OPTION_NONZERO;
-    }
-
-    return options;
-}
-
-void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value)
-{
-    rrdset_check_rdlock(r->st);
-
-    long rows = rrdr_rows(r);
-    long c, i;
-    RRDDIM *rd;
-
-    //info("JSONWRAPPER(): %s: BEGIN", r->st->id);
-    char kq[2] = "",                    // key quote
-        sq[2] = "";                     // string quote
-
-    if( options & RRDR_OPTION_GOOGLE_JSON ) {
-        kq[0] = '\0';
-        sq[0] = '\'';
-    }
-    else {
-        kq[0] = '"';
-        sq[0] = '"';
-    }
-
-    buffer_sprintf(wb, "{\n"
-            "   %sapi%s: 1,\n"
-            "   %sid%s: %s%s%s,\n"
-            "   %sname%s: %s%s%s,\n"
-            "   %sview_update_every%s: %d,\n"
-            "   %supdate_every%s: %d,\n"
-            "   %sfirst_entry%s: %u,\n"
-            "   %slast_entry%s: %u,\n"
-            "   %sbefore%s: %u,\n"
-            "   %safter%s: %u,\n"
-            "   %sdimension_names%s: ["
-            , kq, kq
-            , kq, kq, sq, r->st->id, sq
-            , kq, kq, sq, r->st->name, sq
-            , kq, kq, r->update_every
-            , kq, kq, r->st->update_every
-            , kq, kq, (uint32_t)rrdset_first_entry_t(r->st)
-            , kq, kq, (uint32_t)rrdset_last_entry_t(r->st)
-            , kq, kq, (uint32_t)r->before
-            , kq, kq, (uint32_t)r->after
-            , kq, kq);
-
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-        if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-        if(i) buffer_strcat(wb, ", ");
-        buffer_strcat(wb, sq);
-        buffer_strcat(wb, rd->name);
-        buffer_strcat(wb, sq);
-        i++;
-    }
-    if(!i) {
-#ifdef NETDATA_INTERNAL_CHECKS
-        error("RRDR is empty for %s (RRDR has %d dimensions, options is 0x%08x)", r->st->id, r->d, options);
-#endif
-        rows = 0;
-        buffer_strcat(wb, sq);
-        buffer_strcat(wb, "no data");
-        buffer_strcat(wb, sq);
-    }
-
-    buffer_sprintf(wb, "],\n"
-            "   %sdimension_ids%s: ["
-            , kq, kq);
-
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-        if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-        if(i) buffer_strcat(wb, ", ");
-        buffer_strcat(wb, sq);
-        buffer_strcat(wb, rd->id);
-        buffer_strcat(wb, sq);
-        i++;
-    }
-    if(!i) {
-        rows = 0;
-        buffer_strcat(wb, sq);
-        buffer_strcat(wb, "no data");
-        buffer_strcat(wb, sq);
-    }
-
-    buffer_sprintf(wb, "],\n"
-            "   %slatest_values%s: ["
-            , kq, kq);
-
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-        if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-        if(i) buffer_strcat(wb, ", ");
-        i++;
-
-        storage_number n = rd->values[rrdset_last_slot(r->st)];
-
-        if(!does_storage_number_exist(n))
-            buffer_strcat(wb, "null");
-        else
-            buffer_rrd_value(wb, unpack_storage_number(n));
-    }
-    if(!i) {
-        rows = 0;
-        buffer_strcat(wb, "null");
-    }
-
-    buffer_sprintf(wb, "],\n"
-            "   %sview_latest_values%s: ["
-            , kq, kq);
-
-    i = 0;
-    if(rows) {
-        calculated_number total = 1;
-
-        if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
-            total = 0;
-            for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-                calculated_number *cn = &r->v[ (0) * r->d ];
-                calculated_number n = cn[c];
-
-                if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
-                    n = -n;
-
-                total += n;
-            }
-            // prevent a division by zero
-            if(total == 0) total = 1;
-        }
-
-        for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-            if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-            if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-            if(i) buffer_strcat(wb, ", ");
-            i++;
-
-            calculated_number *cn = &r->v[ (0) * r->d ];
-            uint8_t *co = &r->o[ (0) * r->d ];
-            calculated_number n = cn[c];
-
-            if(co[c] & RRDR_EMPTY) {
-                if(options & RRDR_OPTION_NULL2ZERO)
-                    buffer_strcat(wb, "0");
-                else
-                    buffer_strcat(wb, "null");
-            }
-            else {
-                if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
-                    n = -n;
-
-                if(unlikely(options & RRDR_OPTION_PERCENTAGE))
-                    n = n * 100 / total;
-
-                buffer_rrd_value(wb, n);
-            }
-        }
-    }
-    if(!i) {
-        rows = 0;
-        buffer_strcat(wb, "null");
-    }
-
-    buffer_sprintf(wb, "],\n"
-            "   %sdimensions%s: %ld,\n"
-            "   %spoints%s: %ld,\n"
-            "   %sformat%s: %s"
-            , kq, kq, i
-            , kq, kq, rows
-            , kq, kq, sq
-            );
-
-    rrdr_buffer_print_format(wb, format);
-
-    buffer_sprintf(wb, "%s,\n"
-            "   %sresult%s: "
-            , sq
-            , kq, kq
-            );
-
-    if(string_value) buffer_strcat(wb, sq);
-    //info("JSONWRAPPER(): %s: END", r->st->id);
-}
-
-void rrdr_json_wrapper_end(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value)
-{
-    (void)format;
-
-    char kq[2] = "",                    // key quote
-        sq[2] = "";                     // string quote
-
-    if( options & RRDR_OPTION_GOOGLE_JSON ) {
-        kq[0] = '\0';
-        sq[0] = '\'';
-    }
-    else {
-        kq[0] = '"';
-        sq[0] = '"';
-    }
-
-    if(string_value) buffer_strcat(wb, sq);
-
-    buffer_sprintf(wb, ",\n %smin%s: ", kq, kq);
-    buffer_rrd_value(wb, r->min);
-    buffer_sprintf(wb, ",\n %smax%s: ", kq, kq);
-    buffer_rrd_value(wb, r->max);
-    buffer_strcat(wb, "\n}\n");
-}
-
-#define JSON_DATES_JS 1
-#define JSON_DATES_TIMESTAMP 2
-
-static void rrdr2json(RRDR *r, BUFFER *wb, uint32_t options, int datatable)
-{
-    rrdset_check_rdlock(r->st);
-
-    //info("RRD2JSON(): %s: BEGIN", r->st->id);
-    int row_annotations = 0, dates, dates_with_new = 0;
-    char kq[2] = "",                    // key quote
-        sq[2] = "",                     // string quote
-        pre_label[101] = "",            // before each label
-        post_label[101] = "",           // after each label
-        pre_date[101] = "",             // the beginning of line, to the date
-        post_date[101] = "",            // closing the date
-        pre_value[101] = "",            // before each value
-        post_value[101] = "",           // after each value
-        post_line[101] = "",            // at the end of each row
-        normal_annotation[201] = "",    // default row annotation
-        overflow_annotation[201] = "",  // overflow row annotation
-        data_begin[101] = "",           // between labels and values
-        finish[101] = "";               // at the end of everything
-
-    if(datatable) {
-        dates = JSON_DATES_JS;
-        if( options & RRDR_OPTION_GOOGLE_JSON ) {
-            kq[0] = '\0';
-            sq[0] = '\'';
-        }
-        else {
-            kq[0] = '"';
-            sq[0] = '"';
-        }
-        row_annotations = 1;
-        snprintfz(pre_date,   100, "        {%sc%s:[{%sv%s:%s", kq, kq, kq, kq, sq);
-        snprintfz(post_date,  100, "%s}", sq);
-        snprintfz(pre_label,  100, ",\n     {%sid%s:%s%s,%slabel%s:%s", kq, kq, sq, sq, kq, kq, sq);
-        snprintfz(post_label, 100, "%s,%spattern%s:%s%s,%stype%s:%snumber%s}", sq, kq, kq, sq, sq, kq, kq, sq, sq);
-        snprintfz(pre_value,  100, ",{%sv%s:", kq, kq);
-        strcpy(post_value,         "}");
-        strcpy(post_line,          "]}");
-        snprintfz(data_begin, 100, "\n  ],\n    %srows%s:\n [\n", kq, kq);
-        strcpy(finish,             "\n  ]\n}");
-
-        snprintfz(overflow_annotation, 200, ",{%sv%s:%sRESET OR OVERFLOW%s},{%sv%s:%sThe counters have been wrapped.%s}", kq, kq, sq, sq, kq, kq, sq, sq);
-        snprintfz(normal_annotation,   200, ",{%sv%s:null},{%sv%s:null}", kq, kq, kq, kq);
-
-        buffer_sprintf(wb, "{\n %scols%s:\n [\n", kq, kq);
-        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%stime%s,%spattern%s:%s%s,%stype%s:%sdatetime%s},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq);
-        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotation%s}},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
-        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotationText%s}}", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
-
-        // remove the valueobjects flag
-        // google wants its own keys
-        if(options & RRDR_OPTION_OBJECTSROWS)
-            options &= ~RRDR_OPTION_OBJECTSROWS;
-    }
-    else {
-        kq[0] = '"';
-        sq[0] = '"';
-        if(options & RRDR_OPTION_GOOGLE_JSON) {
-            dates = JSON_DATES_JS;
-            dates_with_new = 1;
-        }
-        else {
-            dates = JSON_DATES_TIMESTAMP;
-            dates_with_new = 0;
-        }
-        if( options & RRDR_OPTION_OBJECTSROWS )
-            strcpy(pre_date, "      { ");
-        else
-            strcpy(pre_date, "      [ ");
-        strcpy(pre_label,  ", \"");
-        strcpy(post_label, "\"");
-        strcpy(pre_value,  ", ");
-        if( options & RRDR_OPTION_OBJECTSROWS )
-            strcpy(post_line, "}");
-        else
-            strcpy(post_line, "]");
-        snprintfz(data_begin, 100, "],\n    %sdata%s:\n [\n", kq, kq);
-        strcpy(finish,             "\n  ]\n}");
-
-        buffer_sprintf(wb, "{\n %slabels%s: [", kq, kq);
-        buffer_sprintf(wb, "%stime%s", sq, sq);
-    }
-
-    // -------------------------------------------------------------------------
-    // print the JSON header
-
-    long c, i;
-    RRDDIM *rd;
-
-    // print the header lines
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-        if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-        buffer_strcat(wb, pre_label);
-        buffer_strcat(wb, rd->name);
-        buffer_strcat(wb, post_label);
-        i++;
-    }
-    if(!i) {
-        buffer_strcat(wb, pre_label);
-        buffer_strcat(wb, "no data");
-        buffer_strcat(wb, post_label);
-    }
-
-    // print the begin of row data
-    buffer_strcat(wb, data_begin);
-
-    // if all dimensions are hidden, print a null
-    if(!i) {
-        buffer_strcat(wb, finish);
-        return;
-    }
-
-    long start = 0, end = rrdr_rows(r), step = 1;
-    if((options & RRDR_OPTION_REVERSED)) {
-        start = rrdr_rows(r) - 1;
-        end = -1;
-        step = -1;
-    }
-
-    // for each line in the array
-    calculated_number total = 1;
-    for(i = start; i != end ;i += step) {
-        calculated_number *cn = &r->v[ i * r->d ];
-        uint8_t *co = &r->o[ i * r->d ];
-
-        time_t now = r->t[i];
-
-        if(dates == JSON_DATES_JS) {
-            // generate the local date time
-            struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
-            if(!tm) { error("localtime_r() failed."); continue; }
-
-            if(likely(i != start)) buffer_strcat(wb, ",\n");
-            buffer_strcat(wb, pre_date);
-
-            if( options & RRDR_OPTION_OBJECTSROWS )
-                buffer_sprintf(wb, "%stime%s: ", kq, kq);
-
-            if(dates_with_new)
-                buffer_strcat(wb, "new ");
-
-            buffer_jsdate(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
-
-            buffer_strcat(wb, post_date);
-
-            if(row_annotations) {
-                // google supports one annotation per row
-                int annotation_found = 0;
-                for(c = 0, rd = r->st->dimensions; rd ;c++, rd = rd->next) {
-                    if(co[c] & RRDR_RESET) {
-                        buffer_strcat(wb, overflow_annotation);
-                        annotation_found = 1;
-                        break;
-                    }
-                }
-                if(!annotation_found)
-                    buffer_strcat(wb, normal_annotation);
-            }
-        }
-        else {
-            // print the timestamp of the line
-            if(likely(i != start)) buffer_strcat(wb, ",\n");
-            buffer_strcat(wb, pre_date);
-
-            if( options & RRDR_OPTION_OBJECTSROWS )
-                buffer_sprintf(wb, "%stime%s: ", kq, kq);
-
-            buffer_rrd_value(wb, (calculated_number)r->t[i]);
-            // in ms
-            if(options & RRDR_OPTION_MILLISECONDS) buffer_strcat(wb, "000");
-
-            buffer_strcat(wb, post_date);
-        }
-
-        int set_min_max = 0;
-        if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
-            total = 0;
-            for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-                calculated_number n = cn[c];
-
-                if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
-                    n = -n;
-
-                total += n;
-            }
-            // prevent a division by zero
-            if(total == 0) total = 1;
-            set_min_max = 1;
-        }
-
-        // for each dimension
-        for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-            if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-            if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-            calculated_number n = cn[c];
-
-            buffer_strcat(wb, pre_value);
-
-            if( options & RRDR_OPTION_OBJECTSROWS )
-                buffer_sprintf(wb, "%s%s%s: ", kq, rd->name, kq);
-
-            if(co[c] & RRDR_EMPTY) {
-                if(options & RRDR_OPTION_NULL2ZERO)
-                    buffer_strcat(wb, "0");
-                else
-                    buffer_strcat(wb, "null");
-            }
-            else {
-                if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
-                    n = -n;
-
-                if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
-                    n = n * 100 / total;
-
-                    if(unlikely(set_min_max)) {
-                        r->min = r->max = n;
-                        set_min_max = 0;
-                    }
-
-                    if(n < r->min) r->min = n;
-                    if(n > r->max) r->max = n;
-                }
-
-                buffer_rrd_value(wb, n);
-            }
-
-            buffer_strcat(wb, post_value);
-        }
-
-        buffer_strcat(wb, post_line);
-    }
-
-    buffer_strcat(wb, finish);
-    //info("RRD2JSON(): %s: END", r->st->id);
-}
-
-static void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t options, const char *startline, const char *separator, const char *endline, const char *betweenlines)
-{
-    rrdset_check_rdlock(r->st);
-
-    //info("RRD2CSV(): %s: BEGIN", r->st->id);
-    long c, i;
-    RRDDIM *d;
-
-    // print the csv header
-    for(c = 0, i = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
-        if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-        if(!i) {
-            buffer_strcat(wb, startline);
-            if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
-            buffer_strcat(wb, "time");
-            if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
-        }
-        buffer_strcat(wb, separator);
-        if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
-        buffer_strcat(wb, d->name);
-        if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
-        i++;
-    }
-    buffer_strcat(wb, endline);
-
-    if(!i) {
-        // no dimensions present
-        return;
-    }
-
-    long start = 0, end = rrdr_rows(r), step = 1;
-    if((options & RRDR_OPTION_REVERSED)) {
-        start = rrdr_rows(r) - 1;
-        end = -1;
-        step = -1;
-    }
-
-    // for each line in the array
-    calculated_number total = 1;
-    for(i = start; i != end ;i += step) {
-        calculated_number *cn = &r->v[ i * r->d ];
-        uint8_t *co = &r->o[ i * r->d ];
-
-        buffer_strcat(wb, betweenlines);
-        buffer_strcat(wb, startline);
-
-        time_t now = r->t[i];
-
-        if((options & RRDR_OPTION_SECONDS) || (options & RRDR_OPTION_MILLISECONDS)) {
-            // print the timestamp of the line
-            buffer_rrd_value(wb, (calculated_number)now);
-            // in ms
-            if(options & RRDR_OPTION_MILLISECONDS) buffer_strcat(wb, "000");
-        }
-        else {
-            // generate the local date time
-            struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
-            if(!tm) { error("localtime() failed."); continue; }
-            buffer_date(wb, tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
-        }
-
-        int set_min_max = 0;
-        if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
-            total = 0;
-            for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
-                calculated_number n = cn[c];
-
-                if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
-                    n = -n;
-
-                total += n;
-            }
-            // prevent a division by zero
-            if(total == 0) total = 1;
-            set_min_max = 1;
-        }
-
-        // for each dimension
-        for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
-            if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-            if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-            buffer_strcat(wb, separator);
-
-            calculated_number n = cn[c];
-
-            if(co[c] & RRDR_EMPTY) {
-                if(options & RRDR_OPTION_NULL2ZERO)
-                    buffer_strcat(wb, "0");
-                else
-                    buffer_strcat(wb, "null");
-            }
-            else {
-                if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
-                    n = -n;
-
-                if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
-                    n = n * 100 / total;
-
-                    if(unlikely(set_min_max)) {
-                        r->min = r->max = n;
-                        set_min_max = 0;
-                    }
-
-                    if(n < r->min) r->min = n;
-                    if(n > r->max) r->max = n;
-                }
-
-                buffer_rrd_value(wb, n);
-            }
-        }
-
-        buffer_strcat(wb, endline);
-    }
-    //info("RRD2CSV(): %s: END", r->st->id);
-}
-
-inline static calculated_number rrdr2value(RRDR *r, long i, uint32_t options, int *all_values_are_null) {
-    rrdset_check_rdlock(r->st);
-
-    long c;
-    RRDDIM *d;
-
-    calculated_number *cn = &r->v[ i * r->d ];
-    uint8_t *co = &r->o[ i * r->d ];
-
-    calculated_number sum = 0, min = 0, max = 0, v;
-    int all_null = 1, init = 1;
-
-    calculated_number total = 1;
-    int set_min_max = 0;
-    if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
-        total = 0;
-        for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
-            calculated_number n = cn[c];
-
-            if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
-                n = -n;
-
-            total += n;
-        }
-        // prevent a division by zero
-        if(total == 0) total = 1;
-        set_min_max = 1;
-    }
-
-    // for each dimension
-    for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
-        if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-        calculated_number n = cn[c];
-
-        if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
-            n = -n;
-
-        if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
-            n = n * 100 / total;
-
-            if(unlikely(set_min_max)) {
-                r->min = r->max = n;
-                set_min_max = 0;
-            }
-
-            if(n < r->min) r->min = n;
-            if(n > r->max) r->max = n;
-        }
-
-        if(unlikely(init)) {
-            if(n > 0) {
-                min = 0;
-                max = n;
-            }
-            else {
-                min = n;
-                max = 0;
-            }
-            init = 0;
-        }
-
-        if(likely(!(co[c] & RRDR_EMPTY))) {
-            all_null = 0;
-            sum += n;
-        }
-
-        if(n < min) min = n;
-        if(n > max) max = n;
-    }
-
-    if(unlikely(all_null)) {
-        if(likely(all_values_are_null))
-            *all_values_are_null = 1;
-        return 0;
-    }
-    else {
-        if(likely(all_values_are_null))
-            *all_values_are_null = 0;
-    }
-
-    if(options & RRDR_OPTION_MIN2MAX)
-        v = max - min;
-    else
-        v = sum;
-
-    return v;
-}
-
-static void rrdr2ssv(RRDR *r, BUFFER *wb, uint32_t options, const char *prefix, const char *separator, const char *suffix)
-{
-    //info("RRD2SSV(): %s: BEGIN", r->st->id);
-    long i;
-
-    buffer_strcat(wb, prefix);
-    long start = 0, end = rrdr_rows(r), step = 1;
-    if((options & RRDR_OPTION_REVERSED)) {
-        start = rrdr_rows(r) - 1;
-        end = -1;
-        step = -1;
-    }
-
-    // for each line in the array
-    for(i = start; i != end ;i += step) {
-        int all_values_are_null = 0;
-        calculated_number v = rrdr2value(r, i, options, &all_values_are_null);
-
-        if(likely(i != start)) {
-            if(r->min > v) r->min = v;
-            if(r->max < v) r->max = v;
-        }
-        else {
-            r->min = v;
-            r->max = v;
-        }
-
-        if(likely(i != start))
-            buffer_strcat(wb, separator);
-
-        if(all_values_are_null) {
-            if(options & RRDR_OPTION_NULL2ZERO)
-                buffer_strcat(wb, "0");
-            else
-                buffer_strcat(wb, "null");
-        }
-        else
-            buffer_rrd_value(wb, v);
-    }
-    buffer_strcat(wb, suffix);
-    //info("RRD2SSV(): %s: END", r->st->id);
-}
-
-inline static calculated_number *rrdr_line_values(RRDR *r)
-{
-    return &r->v[ r->c * r->d ];
-}
-
-inline static uint8_t *rrdr_line_options(RRDR *r)
-{
-    return &r->o[ r->c * r->d ];
-}
-
-inline static int rrdr_line_init(RRDR *r, time_t t)
-{
-    r->c++;
-
-    if(unlikely(r->c >= r->n)) {
-        error("requested to step above RRDR size for chart %s", r->st->name);
-        r->c = r->n - 1;
-    }
-
-    // save the time
-    r->t[r->c] = t;
-
-    return 1;
-}
-
-inline static void rrdr_lock_rrdset(RRDR *r) {
-    if(unlikely(!r)) {
-        error("NULL value given!");
-        return;
-    }
-
-    rrdset_rdlock(r->st);
-    r->has_st_lock = 1;
-}
-
-inline static void rrdr_unlock_rrdset(RRDR *r) {
-    if(unlikely(!r)) {
-        error("NULL value given!");
-        return;
-    }
-
-    if(likely(r->has_st_lock)) {
-        rrdset_unlock(r->st);
-        r->has_st_lock = 0;
-    }
-}
-
-inline static void rrdr_free(RRDR *r)
-{
-    if(unlikely(!r)) {
-        error("NULL value given!");
-        return;
-    }
-
-    rrdr_unlock_rrdset(r);
-    freez(r->t);
-    freez(r->v);
-    freez(r->o);
-    freez(r->od);
-    freez(r);
-}
-
-static inline void rrdr_done(RRDR *r)
-{
-    r->rows = r->c + 1;
-    r->c = 0;
-}
-
-static RRDR *rrdr_create(RRDSET *st, long n)
-{
-    if(unlikely(!st)) {
-        error("NULL value given!");
-        return NULL;
-    }
-
-    RRDR *r = callocz(1, sizeof(RRDR));
-    r->st = st;
-
-    rrdr_lock_rrdset(r);
-
-    RRDDIM *rd;
-    rrddim_foreach_read(rd, st) r->d++;
-
-    r->n = n;
-
-    r->t = mallocz(n * sizeof(time_t));
-    r->v = mallocz(n * r->d * sizeof(calculated_number));
-    r->o = mallocz(n * r->d * sizeof(uint8_t));
-    r->od = mallocz(r->d * sizeof(uint8_t));
-
-    // set the hidden flag on hidden dimensions
-    int c;
-    for(c = 0, rd = st->dimensions ; rd ; c++, rd = rd->next) {
-        if(unlikely(rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)))
-            r->od[c] = RRDR_HIDDEN;
-        else
-            r->od[c] = 0;
-    }
-
-    r->c = -1;
-    r->group = 1;
-    r->update_every = 1;
-
-    return r;
-}
-
-RRDR *rrd2rrdr(RRDSET *st, long points, long long after, long long before, int group_method, long group_time, int aligned)
-{
-#ifdef NETDATA_INTERNAL_CHECKS
-    int debug = rrdset_flag_check(st, RRDSET_FLAG_DEBUG)?1:0;
-#endif
-    int absolute_period_requested = -1;
-
-    time_t first_entry_t = rrdset_first_entry_t(st);
-    time_t last_entry_t  = rrdset_last_entry_t(st);
-
-    if(before == 0 && after == 0) {
-        // dump the all the data
-        before = last_entry_t;
-        after = first_entry_t;
-        absolute_period_requested = 0;
-    }
-
-    // allow relative for before (smaller than API_RELATIVE_TIME_MAX)
-    if(((before < 0)?-before:before) <= API_RELATIVE_TIME_MAX) {
-        if(abs(before) % st->update_every) {
-            // make sure it is multiple of st->update_every
-            if(before < 0) before = before - st->update_every - before % st->update_every;
-            else           before = before + st->update_every - before % st->update_every;
-        }
-        if(before > 0) before = first_entry_t + before;
-        else           before = last_entry_t  + before;
-        absolute_period_requested = 0;
-    }
-
-    // allow relative for after (smaller than API_RELATIVE_TIME_MAX)
-    if(((after < 0)?-after:after) <= API_RELATIVE_TIME_MAX) {
-        if(after == 0) after = -st->update_every;
-        if(abs(after) % st->update_every) {
-            // make sure it is multiple of st->update_every
-            if(after < 0) after = after - st->update_every - after % st->update_every;
-            else          after = after + st->update_every - after % st->update_every;
-        }
-        after = before + after;
-        absolute_period_requested = 0;
-    }
-
-    if(absolute_period_requested == -1)
-        absolute_period_requested = 1;
-
-    // make sure they are within our timeframe
-    if(before > last_entry_t)  before = last_entry_t;
-    if(before < first_entry_t) before = first_entry_t;
-
-    if(after > last_entry_t)  after = last_entry_t;
-    if(after < first_entry_t) after = first_entry_t;
-
-    // check if they are upside down
-    if(after > before) {
-        time_t tmp = before;
-        before = after;
-        after = tmp;
-    }
-
-    // the duration of the chart
-    time_t duration = before - after;
-    long available_points = duration / st->update_every;
-
-    if(duration <= 0 || available_points <= 0)
-        return rrdr_create(st, 1);
-
-    // check the number of wanted points in the result
-    if(unlikely(points < 0)) points = -points;
-    if(unlikely(points > available_points)) points = available_points;
-    if(unlikely(points == 0)) points = available_points;
-
-    // calculate the desired grouping of source data points
-    long group = available_points / points;
-    if(unlikely(group <= 0)) group = 1;
-    if(unlikely(available_points % points > points / 2)) group++; // rounding to the closest integer
-
-    // group_time enforces a certain grouping multiple
-    calculated_number group_sum_divisor = 1.0;
-    long group_points = 1;
-    if(unlikely(group_time > st->update_every)) {
-        if (unlikely(group_time > duration)) {
-            // group_time is above the available duration
-
-            #ifdef NETDATA_INTERNAL_CHECKS
-            info("INTERNAL CHECK: %s: requested gtime %ld secs, is greater than the desired duration %ld secs", st->id, group_time, duration);
-            #endif
-
-            group = points; // use all the points
-        }
-        else {
-            // the points we should group to satisfy gtime
-            group_points = group_time / st->update_every;
-            if(unlikely(group_time % group_points)) {
-                #ifdef NETDATA_INTERNAL_CHECKS
-                info("INTERNAL CHECK: %s: requested gtime %ld secs, is not a multiple of the chart's data collection frequency %d secs", st->id, group_time, st->update_every);
-                #endif
-
-                group_points++;
-            }
-
-            // adapt group according to group_points
-            if(unlikely(group < group_points)) group = group_points; // do not allow grouping below the desired one
-            if(unlikely(group % group_points)) group += group_points - (group % group_points); // make sure group is multiple of group_points
-
-            //group_sum_divisor = group / group_points;
-            group_sum_divisor = (calculated_number)(group * st->update_every) / (calculated_number)group_time;
-        }
-    }
-
-    time_t after_new  = after  - (after  % ( ((aligned)?group:1) * st->update_every ));
-    time_t before_new = before - (before % ( ((aligned)?group:1) * st->update_every ));
-    long points_new   = (before_new - after_new) / st->update_every / group;
-
-    // find the starting and ending slots in our round robin db
-    long    start_at_slot = rrdset_time2slot(st, before_new),
-            stop_at_slot  = rrdset_time2slot(st, after_new);
-
-#ifdef NETDATA_INTERNAL_CHECKS
-    if(after_new < first_entry_t)
-        error("INTERNAL CHECK: after_new %u is too small, minimum %u", (uint32_t)after_new, (uint32_t)first_entry_t);
-
-    if(after_new > last_entry_t)
-        error("INTERNAL CHECK: after_new %u is too big, maximum %u", (uint32_t)after_new, (uint32_t)last_entry_t);
-
-    if(before_new < first_entry_t)
-        error("INTERNAL CHECK: before_new %u is too small, minimum %u", (uint32_t)before_new, (uint32_t)first_entry_t);
-
-    if(before_new > last_entry_t)
-        error("INTERNAL CHECK: before_new %u is too big, maximum %u", (uint32_t)before_new, (uint32_t)last_entry_t);
-
-    if(start_at_slot < 0 || start_at_slot >= st->entries)
-        error("INTERNAL CHECK: start_at_slot is invalid %ld, expected 0 to %ld", start_at_slot, st->entries - 1);
-
-    if(stop_at_slot < 0 || stop_at_slot >= st->entries)
-        error("INTERNAL CHECK: stop_at_slot is invalid %ld, expected 0 to %ld", stop_at_slot, st->entries - 1);
-
-    if(points_new > (before_new - after_new) / group / st->update_every + 1)
-        error("INTERNAL CHECK: points_new %ld is more than points %ld", points_new, (before_new - after_new) / group / st->update_every + 1);
-
-    if(group < group_points)
-        error("INTERNAL CHECK: group %ld is less than the desired group points %ld", group, group_points);
-
-    if(group > group_points && group % group_points)
-        error("INTERNAL CHECK: group %ld is not a multiple of the desired group points %ld", group, group_points);
-#endif
-
-    //info("RRD2RRDR(): %s: wanted %ld points, got %ld - group=%ld, wanted duration=%u, got %u - wanted %ld - %ld, got %ld - %ld", st->id, points, points_new, group, before - after, before_new - after_new, after, before, after_new, before_new);
-
-    after = after_new;
-    before = before_new;
-    duration = before - after;
-    points = points_new;
-
-    // Now we have:
-    // before = the end time of the calculation
-    // after = the start time of the calculation
-    // duration = the duration of the calculation
-    // group = the number of source points to aggregate / group together
-    // method = the method of grouping source points
-    // points = the number of points to generate
-
-
-    // -------------------------------------------------------------------------
-    // initialize our result set
-
-    RRDR *r = rrdr_create(st, points);
-    if(unlikely(!r)) {
-#ifdef NETDATA_INTERNAL_CHECKS
-        error("INTERNAL CHECK: Cannot create RRDR for %s, after=%u, before=%u, duration=%u, points=%ld", st->id, (uint32_t)after, (uint32_t)before, (uint32_t)duration, points);
-#endif
-        return NULL;
-    }
-
-    if(unlikely(!r->d)) {
-#ifdef NETDATA_INTERNAL_CHECKS
-        error("INTERNAL CHECK: Returning empty RRDR (no dimensions in RRDSET) for %s, after=%u, before=%u, duration=%u, points=%ld", st->id, (uint32_t)after, (uint32_t)before, (uint32_t)duration, points);
-#endif
-        return r;
-    }
-
-    if(unlikely(absolute_period_requested == 1))
-        r->result_options |= RRDR_RESULT_OPTION_ABSOLUTE;
-    else
-        r->result_options |= RRDR_RESULT_OPTION_RELATIVE;
-
-    // find how many dimensions we have
-    long dimensions = r->d;
-
-
-    // -------------------------------------------------------------------------
-    // checks for debugging
-#ifdef NETDATA_INTERNAL_CHECKS
-    if(debug) debug(D_RRD_STATS, "INFO %s first_t: %u, last_t: %u, all_duration: %u, after: %u, before: %u, duration: %u, points: %ld, group: %ld, group_points: %ld"
-            , st->id
-            , (uint32_t)first_entry_t
-            , (uint32_t)last_entry_t
-            , (uint32_t)(last_entry_t - first_entry_t)
-            , (uint32_t)after
-            , (uint32_t)before
-            , (uint32_t)duration
-            , points
-            , group
-            , group_points
-            );
-#endif
-
-    // -------------------------------------------------------------------------
-    // temp arrays for keeping values per dimension
-
-    calculated_number   last_values[dimensions]; // keep the last value of each dimension
-    calculated_number   group_values[dimensions]; // keep sums when grouping
-    long                group_counts[dimensions]; // keep the number of values added to group_values
-    uint8_t             group_options[dimensions];
-    uint8_t             found_non_zero[dimensions];
-
-
-    // initialize them
-    RRDDIM *rd;
-    long c;
-    rrdset_check_rdlock(st);
-    for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
-        last_values[c] = 0;
-        group_values[c] = (group_method == GROUP_MAX || group_method == GROUP_MIN)?NAN:0;
-        group_counts[c] = 0;
-        group_options[c] = 0;
-        found_non_zero[c] = 0;
-    }
-
-
-    // -------------------------------------------------------------------------
-    // the main loop
-
-    time_t  now = rrdset_slot2time(st, start_at_slot),
-            dt = st->update_every,
-            group_start_t = 0;
-
-#ifdef NETDATA_INTERNAL_CHECKS
-    if(unlikely(debug)) debug(D_RRD_STATS, "BEGIN %s after_t: %u (stop_at_t: %ld), before_t: %u (start_at_t: %ld), start_t(now): %u, current_entry: %ld, entries: %ld"
-            , st->id
-            , (uint32_t)after
-            , stop_at_slot
-            , (uint32_t)before
-            , start_at_slot
-            , (uint32_t)now
-            , st->current_entry
-            , st->entries
-            );
-#endif
-
-    r->group = group;
-    r->update_every = (int)group * st->update_every;
-    r->before = now;
-    r->after = now;
-
-    //info("RRD2RRDR(): %s: STARTING", st->id);
-
-    long slot = start_at_slot, counter = 0, stop_now = 0, added = 0, group_count = 0, add_this = 0;
-    for(; !stop_now ; now -= dt, slot--, counter++) {
-        if(unlikely(slot < 0)) slot = st->entries - 1;
-        if(unlikely(slot == stop_at_slot)) stop_now = counter;
-
-#ifdef NETDATA_INTERNAL_CHECKS
-        if(unlikely(debug)) debug(D_RRD_STATS, "ROW %s slot: %ld, entries_counter: %ld, group_count: %ld, added: %ld, now: %ld, %s %s"
-                , st->id
-                , slot
-                , counter
-                , group_count + 1
-                , added
-                , now
-                , (group_count + 1 == group)?"PRINT":"  -  "
-                , (now >= after && now <= before)?"RANGE":"  -  "
-                );
-#endif
-
-        // make sure we return data in the proper time range
-        if(unlikely(now > before)) continue;
-        if(unlikely(now < after)) break;
-
-        if(unlikely(group_count == 0)) group_start_t = now;
-        group_count++;
-
-        if(unlikely(group_count == group)) {
-            if(unlikely(added >= points)) break;
-            add_this = 1;
-        }
-
-        // do the calculations
-        for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
-            storage_number n = rd->values[slot];
-            if(unlikely(!does_storage_number_exist(n))) continue;
-
-            group_counts[c]++;
-
-            calculated_number value = unpack_storage_number(n);
-            if(likely(value != 0.0)) {
-                group_options[c] |= RRDR_NONZERO;
-                found_non_zero[c] = 1;
-            }
-
-            if(unlikely(did_storage_number_reset(n)))
-                group_options[c] |= RRDR_RESET;
-
-            switch(group_method) {
-                case GROUP_MIN:
-                    if(unlikely(isnan(group_values[c])) ||
-                            calculated_number_fabs(value) < calculated_number_fabs(group_values[c]))
-                        group_values[c] = value;
-                    break;
-
-                case GROUP_MAX:
-                    if(unlikely(isnan(group_values[c])) ||
-                            calculated_number_fabs(value) > calculated_number_fabs(group_values[c]))
-                        group_values[c] = value;
-                    break;
-
-                default:
-                case GROUP_SUM:
-                case GROUP_AVERAGE:
-                case GROUP_UNDEFINED:
-                    group_values[c] += value;
-                    break;
-
-                case GROUP_INCREMENTAL_SUM:
-                    if(unlikely(slot == start_at_slot))
-                        last_values[c] = value;
-
-                    group_values[c] += last_values[c] - value;
-                    last_values[c] = value;
-                    break;
-            }
-        }
-
-        // added it
-        if(unlikely(add_this)) {
-            if(unlikely(!rrdr_line_init(r, group_start_t))) break;
-
-            r->after = now;
-
-            calculated_number *cn = rrdr_line_values(r);
-            uint8_t *co = rrdr_line_options(r);
-
-            for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
-
-                // update the dimension options
-                if(likely(found_non_zero[c])) r->od[c] |= RRDR_NONZERO;
-
-                // store the specific point options
-                co[c] = group_options[c];
-
-                // store the value
-                if(unlikely(group_counts[c] == 0)) {
-                    cn[c] = 0.0;
-                    co[c] |= RRDR_EMPTY;
-                    group_values[c] = (group_method == GROUP_MAX || group_method == GROUP_MIN)?NAN:0;
-                }
-                else {
-                    switch(group_method) {
-                        case GROUP_MIN:
-                        case GROUP_MAX:
-                            if(unlikely(isnan(group_values[c])))
-                                cn[c] = 0;
-                            else {
-                                cn[c] = group_values[c];
-                                group_values[c] = NAN;
-                            }
-                            break;
-
-                        case GROUP_SUM:
-                        case GROUP_INCREMENTAL_SUM:
-                            cn[c] = group_values[c];
-                            group_values[c] = 0;
-                            break;
-
-                        default:
-                        case GROUP_AVERAGE:
-                        case GROUP_UNDEFINED:
-                            if(unlikely(group_points != 1))
-                                cn[c] = group_values[c] / group_sum_divisor;
-                            else
-                                cn[c] = group_values[c] / group_counts[c];
-
-                            group_values[c] = 0;
-                            break;
-                    }
-
-                    if(cn[c] < r->min) r->min = cn[c];
-                    if(cn[c] > r->max) r->max = cn[c];
-                }
-
-                // reset for the next loop
-                group_counts[c] = 0;
-                group_options[c] = 0;
-            }
-
-            added++;
-            group_count = 0;
-            add_this = 0;
-        }
-    }
-
-    rrdr_done(r);
-    //info("RRD2RRDR(): %s: END %ld loops made, %ld points generated", st->id, counter, rrdr_rows(r));
-    //error("SHIFT: %s: wanted %ld points, got %ld", st->id, points, rrdr_rows(r));
-    return r;
-}
-
-int rrdset2value_api_v1(
-          RRDSET *st
-        , BUFFER *wb
-        , calculated_number *n
-        , const char *dimensions
-        , long points
-        , long long after
-        , long long before
-        , int group_method
-        , long group_time
-        , uint32_t options
-        , time_t *db_after
-        , time_t *db_before
-        , int *value_is_null
-) {
-    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, !(options & RRDR_OPTION_NOT_ALIGNED));
-    if(!r) {
-        if(value_is_null) *value_is_null = 1;
-        return 500;
-    }
-
-    if(rrdr_rows(r) == 0) {
-        rrdr_free(r);
-
-        if(db_after)  *db_after  = 0;
-        if(db_before) *db_before = 0;
-        if(value_is_null) *value_is_null = 1;
-
-        return 400;
-    }
-
-    if(wb) {
-        if (r->result_options & RRDR_RESULT_OPTION_RELATIVE)
-            buffer_no_cacheable(wb);
-        else if (r->result_options & RRDR_RESULT_OPTION_ABSOLUTE)
-            buffer_cacheable(wb);
-    }
-
-    options = rrdr_check_options(r, options, dimensions);
-
-    if(dimensions)
-        rrdr_disable_not_selected_dimensions(r, options, dimensions);
-
-    if(db_after)  *db_after  = r->after;
-    if(db_before) *db_before = r->before;
-
-    long i = (options & RRDR_OPTION_REVERSED)?rrdr_rows(r) - 1:0;
-    *n = rrdr2value(r, i, options, value_is_null);
-
-    rrdr_free(r);
-    return 200;
-}
-
-int rrdset2anything_api_v1(
-          RRDSET *st
-        , BUFFER *wb
-        , BUFFER *dimensions
-        , uint32_t format
-        , long points
-        , long long after
-        , long long before
-        , int group_method
-        , long group_time
-        , uint32_t options
-        , time_t *latest_timestamp
-) {
-    st->last_accessed_time = now_realtime_sec();
-
-    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, !(options & RRDR_OPTION_NOT_ALIGNED));
-    if(!r) {
-        buffer_strcat(wb, "Cannot generate output with these parameters on this chart.");
-        return 500;
-    }
-
-    if(r->result_options & RRDR_RESULT_OPTION_RELATIVE)
-        buffer_no_cacheable(wb);
-    else if(r->result_options & RRDR_RESULT_OPTION_ABSOLUTE)
-        buffer_cacheable(wb);
-
-    options = rrdr_check_options(r, options, (dimensions)?buffer_tostring(dimensions):NULL);
-
-    if(dimensions)
-        rrdr_disable_not_selected_dimensions(r, options, buffer_tostring(dimensions));
-
-    if(latest_timestamp && rrdr_rows(r) > 0)
-        *latest_timestamp = r->before;
-
-    switch(format) {
-    case DATASOURCE_SSV:
-        if(options & RRDR_OPTION_JSON_WRAP) {
-            wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            rrdr2ssv(r, wb, options, "", " ", "");
-            rrdr_json_wrapper_end(r, wb, format, options, 1);
-        }
-        else {
-            wb->contenttype = CT_TEXT_PLAIN;
-            rrdr2ssv(r, wb, options, "", " ", "");
-        }
-        break;
-
-    case DATASOURCE_SSV_COMMA:
-        if(options & RRDR_OPTION_JSON_WRAP) {
-            wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            rrdr2ssv(r, wb, options, "", ",", "");
-            rrdr_json_wrapper_end(r, wb, format, options, 1);
-        }
-        else {
-            wb->contenttype = CT_TEXT_PLAIN;
-            rrdr2ssv(r, wb, options, "", ",", "");
-        }
-        break;
-
-    case DATASOURCE_JS_ARRAY:
-        if(options & RRDR_OPTION_JSON_WRAP) {
-            wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
-            rrdr2ssv(r, wb, options, "[", ",", "]");
-            rrdr_json_wrapper_end(r, wb, format, options, 0);
-        }
-        else {
-            wb->contenttype = CT_APPLICATION_JSON;
-            rrdr2ssv(r, wb, options, "[", ",", "]");
-        }
-        break;
-
-    case DATASOURCE_CSV:
-        if(options & RRDR_OPTION_JSON_WRAP) {
-            wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            rrdr2csv(r, wb, options, "", ",", "\\n", "");
-            rrdr_json_wrapper_end(r, wb, format, options, 1);
-        }
-        else {
-            wb->contenttype = CT_TEXT_PLAIN;
-            rrdr2csv(r, wb, options, "", ",", "\r\n", "");
-        }
-        break;
-
-    case DATASOURCE_CSV_JSON_ARRAY:
-        wb->contenttype = CT_APPLICATION_JSON;
-        if(options & RRDR_OPTION_JSON_WRAP) {
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
-            buffer_strcat(wb, "[\n");
-            rrdr2csv(r, wb, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
-            buffer_strcat(wb, "\n]");
-            rrdr_json_wrapper_end(r, wb, format, options, 0);
-        }
-        else {
-            wb->contenttype = CT_TEXT_PLAIN;
-            buffer_strcat(wb, "[\n");
-            rrdr2csv(r, wb, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
-            buffer_strcat(wb, "\n]");
-        }
-        break;
-
-    case DATASOURCE_TSV:
-        if(options & RRDR_OPTION_JSON_WRAP) {
-            wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            rrdr2csv(r, wb, options, "", "\t", "\\n", "");
-            rrdr_json_wrapper_end(r, wb, format, options, 1);
-        }
-        else {
-            wb->contenttype = CT_TEXT_PLAIN;
-            rrdr2csv(r, wb, options, "", "\t", "\r\n", "");
-        }
-        break;
-
-    case DATASOURCE_HTML:
-        if(options & RRDR_OPTION_JSON_WRAP) {
-            wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            buffer_strcat(wb, "<html>\\n<center>\\n<table border=\\\"0\\\" cellpadding=\\\"5\\\" cellspacing=\\\"5\\\">\\n");
-            rrdr2csv(r, wb, options, "<tr><td>", "</td><td>", "</td></tr>\\n", "");
-            buffer_strcat(wb, "</table>\\n</center>\\n</html>\\n");
-            rrdr_json_wrapper_end(r, wb, format, options, 1);
-        }
-        else {
-            wb->contenttype = CT_TEXT_HTML;
-            buffer_strcat(wb, "<html>\n<center>\n<table border=\"0\" cellpadding=\"5\" cellspacing=\"5\">\n");
-            rrdr2csv(r, wb, options, "<tr><td>", "</td><td>", "</td></tr>\n", "");
-            buffer_strcat(wb, "</table>\n</center>\n</html>\n");
-        }
-        break;
-
-    case DATASOURCE_DATATABLE_JSONP:
-        wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
-
-        if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
-
-        rrdr2json(r, wb, options, 1);
-
-        if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_end(r, wb, format, options, 0);
-        break;
-
-    case DATASOURCE_DATATABLE_JSON:
-        wb->contenttype = CT_APPLICATION_JSON;
-
-        if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
-
-        rrdr2json(r, wb, options, 1);
-
-        if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_end(r, wb, format, options, 0);
-        break;
-
-    case DATASOURCE_JSONP:
-        wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
-        if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
-
-        rrdr2json(r, wb, options, 0);
-
-        if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_end(r, wb, format, options, 0);
-        break;
-
-    case DATASOURCE_JSON:
-    default:
-        wb->contenttype = CT_APPLICATION_JSON;
-
-        if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
-
-        rrdr2json(r, wb, options, 0);
-
-        if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_end(r, wb, format, options, 0);
-        break;
-    }
-
-    rrdr_free(r);
-    return 200;
-}
diff --git a/src/rrd2json.h b/src/rrd2json.h
deleted file mode 100644
index b41c814ec..000000000
--- a/src/rrd2json.h
+++ /dev/null
@@ -1,82 +0,0 @@
-#ifndef NETDATA_RRD2JSON_H
-#define NETDATA_RRD2JSON_H 1
-
-#define HOSTNAME_MAX 1024
-
-#define API_RELATIVE_TIME_MAX (3 * 365 * 86400)
-
-// type of JSON generations
-#define DATASOURCE_INVALID (-1)
-#define DATASOURCE_JSON 0
-#define DATASOURCE_DATATABLE_JSON 1
-#define DATASOURCE_DATATABLE_JSONP 2
-#define DATASOURCE_SSV 3
-#define DATASOURCE_CSV 4
-#define DATASOURCE_JSONP 5
-#define DATASOURCE_TSV 6
-#define DATASOURCE_HTML 7
-#define DATASOURCE_JS_ARRAY 8
-#define DATASOURCE_SSV_COMMA 9
-#define DATASOURCE_CSV_JSON_ARRAY 10
-
-#define DATASOURCE_FORMAT_JSON "json"
-#define DATASOURCE_FORMAT_DATATABLE_JSON "datatable"
-#define DATASOURCE_FORMAT_DATATABLE_JSONP "datasource"
-#define DATASOURCE_FORMAT_JSONP "jsonp"
-#define DATASOURCE_FORMAT_SSV "ssv"
-#define DATASOURCE_FORMAT_CSV "csv"
-#define DATASOURCE_FORMAT_TSV "tsv"
-#define DATASOURCE_FORMAT_HTML "html"
-#define DATASOURCE_FORMAT_JS_ARRAY "array"
-#define DATASOURCE_FORMAT_SSV_COMMA "ssvcomma"
-#define DATASOURCE_FORMAT_CSV_JSON_ARRAY "csvjsonarray"
-
-#define ALLMETRICS_FORMAT_SHELL                 "shell"
-#define ALLMETRICS_FORMAT_PROMETHEUS            "prometheus"
-#define ALLMETRICS_FORMAT_PROMETHEUS_ALL_HOSTS  "prometheus_all_hosts"
-#define ALLMETRICS_FORMAT_JSON                  "json"
-
-#define ALLMETRICS_SHELL                        1
-#define ALLMETRICS_PROMETHEUS                   2
-#define ALLMETRICS_JSON                         3
-#define ALLMETRICS_PROMETHEUS_ALL_HOSTS         4
-
-#define GROUP_UNDEFINED         0
-#define GROUP_AVERAGE           1
-#define GROUP_MIN               2
-#define GROUP_MAX               3
-#define GROUP_SUM               4
-#define GROUP_INCREMENTAL_SUM   5
-
-#define RRDR_OPTION_NONZERO         0x00000001 // don't output dimensions will just zero values
-#define RRDR_OPTION_REVERSED        0x00000002 // output the rows in reverse order (oldest to newest)
-#define RRDR_OPTION_ABSOLUTE        0x00000004 // values positive, for DATASOURCE_SSV before summing
-#define RRDR_OPTION_MIN2MAX         0x00000008 // when adding dimensions, use max - min, instead of sum
-#define RRDR_OPTION_SECONDS         0x00000010 // output seconds, instead of dates
-#define RRDR_OPTION_MILLISECONDS    0x00000020 // output milliseconds, instead of dates
-#define RRDR_OPTION_NULL2ZERO       0x00000040 // do not show nulls, convert them to zeros
-#define RRDR_OPTION_OBJECTSROWS     0x00000080 // each row of values should be an object, not an array
-#define RRDR_OPTION_GOOGLE_JSON     0x00000100 // comply with google JSON/JSONP specs
-#define RRDR_OPTION_JSON_WRAP       0x00000200 // wrap the response in a JSON header with info about the result
-#define RRDR_OPTION_LABEL_QUOTES    0x00000400 // in CSV output, wrap header labels in double quotes
-#define RRDR_OPTION_PERCENTAGE      0x00000800 // give values as percentage of total
-#define RRDR_OPTION_NOT_ALIGNED     0x00001000 // do not align charts for persistant timeframes
-#define RRDR_OPTION_DISPLAY_ABS     0x00002000 // for badges, display the absolute value, but calculate colors with sign
-#define RRDR_OPTION_MATCH_IDS       0x00004000 // when filtering dimensions, match only IDs
-#define RRDR_OPTION_MATCH_NAMES     0x00008000 // when filtering dimensions, match only names
-
-extern void rrd_stats_api_v1_chart(RRDSET *st, BUFFER *wb);
-extern void rrd_stats_api_v1_charts(RRDHOST *host, BUFFER *wb);
-
-extern void rrd_stats_api_v1_charts_allmetrics_json(RRDHOST *host, BUFFER *wb);
-extern void rrd_stats_api_v1_charts_allmetrics_shell(RRDHOST *host, BUFFER *wb);
-
-extern int rrdset2anything_api_v1(RRDSET *st, BUFFER *out, BUFFER *dimensions, uint32_t format, long points
-                            , long long after, long long before, int group_method, long group_time, uint32_t options
-                            , time_t *latest_timestamp);
-
-extern int rrdset2value_api_v1(RRDSET *st, BUFFER *wb, calculated_number *n, const char *dimensions, long points
-                            , long long after, long long before, int group_method, long group_time, uint32_t options
-                            , time_t *db_after, time_t *db_before, int *value_is_null);
-
-#endif /* NETDATA_RRD2JSON_H */
diff --git a/src/rrd2json_api_old.c b/src/rrd2json_api_old.c
deleted file mode 100644
index 003b8626d..000000000
--- a/src/rrd2json_api_old.c
+++ /dev/null
@@ -1,487 +0,0 @@
-#include "common.h"
-
-unsigned long rrdset_info2json_api_old(RRDSET *st, char *options, BUFFER *wb) {
-    time_t now = now_realtime_sec();
-
-    rrdset_rdlock(st);
-
-    st->last_accessed_time = now;
-
-    buffer_sprintf(wb,
-            "\t\t{\n"
-            "\t\t\t\"id\": \"%s\",\n"
-            "\t\t\t\"name\": \"%s\",\n"
-            "\t\t\t\"type\": \"%s\",\n"
-            "\t\t\t\"family\": \"%s\",\n"
-            "\t\t\t\"context\": \"%s\",\n"
-            "\t\t\t\"title\": \"%s (%s)\",\n"
-            "\t\t\t\"priority\": %ld,\n"
-            "\t\t\t\"enabled\": %d,\n"
-            "\t\t\t\"units\": \"%s\",\n"
-            "\t\t\t\"url\": \"/data/%s/%s\",\n"
-            "\t\t\t\"chart_type\": \"%s\",\n"
-            "\t\t\t\"counter\": %lu,\n"
-            "\t\t\t\"entries\": %ld,\n"
-            "\t\t\t\"first_entry_t\": %ld,\n"
-            "\t\t\t\"last_entry\": %lu,\n"
-            "\t\t\t\"last_entry_t\": %ld,\n"
-            "\t\t\t\"last_entry_secs_ago\": %ld,\n"
-            "\t\t\t\"update_every\": %d,\n"
-            "\t\t\t\"isdetail\": %d,\n"
-            "\t\t\t\"usec_since_last_update\": %llu,\n"
-            "\t\t\t\"collected_total\": " TOTAL_NUMBER_FORMAT ",\n"
-            "\t\t\t\"last_collected_total\": " TOTAL_NUMBER_FORMAT ",\n"
-            "\t\t\t\"dimensions\": [\n"
-            , st->id
-            , st->name
-            , st->type
-            , st->family
-            , st->context
-            , st->title, st->name
-            , st->priority
-            , rrdset_flag_check(st, RRDSET_FLAG_ENABLED)?1:0
-            , st->units
-            , st->name, options?options:""
-            , rrdset_type_name(st->chart_type)
-            , st->counter
-            , st->entries
-            , rrdset_first_entry_t(st)
-            , rrdset_last_slot(st)
-            , rrdset_last_entry_t(st)
-            , (now < rrdset_last_entry_t(st)) ? (time_t)0 : now - rrdset_last_entry_t(st)
-            , st->update_every
-            , rrdset_flag_check(st, RRDSET_FLAG_DETAIL)?1:0
-            , st->usec_since_last_update
-            , st->collected_total
-            , st->last_collected_total
-    );
-
-    unsigned long memory = st->memsize;
-
-    RRDDIM *rd;
-    rrddim_foreach_read(rd, st) {
-
-        memory += rd->memsize;
-
-        buffer_sprintf(wb,
-                "\t\t\t\t{\n"
-                "\t\t\t\t\t\"id\": \"%s\",\n"
-                "\t\t\t\t\t\"name\": \"%s\",\n"
-                "\t\t\t\t\t\"entries\": %ld,\n"
-                "\t\t\t\t\t\"isHidden\": %d,\n"
-                "\t\t\t\t\t\"algorithm\": \"%s\",\n"
-                "\t\t\t\t\t\"multiplier\": " COLLECTED_NUMBER_FORMAT ",\n"
-                "\t\t\t\t\t\"divisor\": " COLLECTED_NUMBER_FORMAT ",\n"
-                "\t\t\t\t\t\"last_entry_t\": %ld,\n"
-                "\t\t\t\t\t\"collected_value\": " COLLECTED_NUMBER_FORMAT ",\n"
-                "\t\t\t\t\t\"calculated_value\": " CALCULATED_NUMBER_FORMAT ",\n"
-                "\t\t\t\t\t\"last_collected_value\": " COLLECTED_NUMBER_FORMAT ",\n"
-                "\t\t\t\t\t\"last_calculated_value\": " CALCULATED_NUMBER_FORMAT ",\n"
-                "\t\t\t\t\t\"memory\": %lu\n"
-                "\t\t\t\t}%s\n"
-                , rd->id
-                , rd->name
-                , rd->entries
-                , rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)?1:0
-                , rrd_algorithm_name(rd->algorithm)
-                , rd->multiplier
-                , rd->divisor
-                , rd->last_collected_time.tv_sec
-                , rd->collected_value
-                , rd->calculated_value
-                , rd->last_collected_value
-                , rd->last_calculated_value
-                , rd->memsize
-                , rd->next?",":""
-        );
-    }
-
-    buffer_sprintf(wb,
-            "\t\t\t],\n"
-                    "\t\t\t\"memory\" : %lu\n"
-                    "\t\t}"
-                   , memory
-    );
-
-    rrdset_unlock(st);
-    return memory;
-}
-
-#define RRD_GRAPH_JSON_HEADER "{\n\t\"charts\": [\n"
-#define RRD_GRAPH_JSON_FOOTER "\n\t]\n}\n"
-
-void rrd_graph2json_api_old(RRDSET *st, char *options, BUFFER *wb)
-{
-    buffer_strcat(wb, RRD_GRAPH_JSON_HEADER);
-    rrdset_info2json_api_old(st, options, wb);
-    buffer_strcat(wb, RRD_GRAPH_JSON_FOOTER);
-}
-
-void rrd_all2json_api_old(RRDHOST *host, BUFFER *wb)
-{
-    unsigned long memory = 0;
-    long c = 0;
-    RRDSET *st;
-
-    time_t now = now_realtime_sec();
-
-    buffer_strcat(wb, RRD_GRAPH_JSON_HEADER);
-
-    rrdhost_rdlock(host);
-    rrdset_foreach_read(st, host) {
-        if(rrdset_is_available_for_viewers(st)) {
-            if(c) buffer_strcat(wb, ",\n");
-            memory += rrdset_info2json_api_old(st, NULL, wb);
-
-            c++;
-            st->last_accessed_time = now;
-        }
-    }
-    rrdhost_unlock(host);
-
-    buffer_sprintf(wb, "\n\t],\n"
-                    "\t\"hostname\": \"%s\",\n"
-                    "\t\"update_every\": %d,\n"
-                    "\t\"history\": %ld,\n"
-                    "\t\"memory\": %lu\n"
-                    "}\n"
-                   , host->hostname
-                   , host->rrd_update_every
-                   , host->rrd_history_entries
-                   , memory
-    );
-}
-
-time_t rrdset2json_api_old(
-        int type
-        , RRDSET *st
-        , BUFFER *wb
-        , long points
-        , long group
-        , int group_method
-        , time_t after
-        , time_t before
-        , int only_non_zero
-) {
-    int c;
-    rrdset_rdlock(st);
-
-    st->last_accessed_time = now_realtime_sec();
-
-    // -------------------------------------------------------------------------
-    // switch from JSON to google JSON
-
-    char kq[2] = "\"";
-    char sq[2] = "\"";
-    switch(type) {
-        case DATASOURCE_DATATABLE_JSON:
-        case DATASOURCE_DATATABLE_JSONP:
-            kq[0] = '\0';
-            sq[0] = '\'';
-            break;
-
-        case DATASOURCE_JSON:
-        default:
-            break;
-    }
-
-
-    // -------------------------------------------------------------------------
-    // validate the parameters
-
-    if(points < 1) points = 1;
-    if(group < 1) group = 1;
-
-    if(before == 0 || before > rrdset_last_entry_t(st)) before = rrdset_last_entry_t(st);
-    if(after  == 0 || after < rrdset_first_entry_t(st)) after = rrdset_first_entry_t(st);
-
-    // ---
-
-    // our return value (the last timestamp printed)
-    // this is required to detect re-transmit in google JSONP
-    time_t last_timestamp = 0;
-
-
-    // -------------------------------------------------------------------------
-    // find how many dimensions we have
-
-    int dimensions = 0;
-    RRDDIM *rd;
-    rrddim_foreach_read(rd, st) dimensions++;
-    if(!dimensions) {
-        rrdset_unlock(st);
-        buffer_strcat(wb, "No dimensions yet.");
-        return 0;
-    }
-
-
-    // -------------------------------------------------------------------------
-    // prepare various strings, to speed up the loop
-
-    char overflow_annotation[201]; snprintfz(overflow_annotation, 200, ",{%sv%s:%sRESET OR OVERFLOW%s},{%sv%s:%sThe counters have been wrapped.%s}", kq, kq, sq, sq, kq, kq, sq, sq);
-    char normal_annotation[201];   snprintfz(normal_annotation,   200, ",{%sv%s:null},{%sv%s:null}", kq, kq, kq, kq);
-    char pre_date[51];             snprintfz(pre_date,             50, "        {%sc%s:[{%sv%s:%s", kq, kq, kq, kq, sq);
-    char post_date[21];            snprintfz(post_date,            20, "%s}", sq);
-    char pre_value[21];            snprintfz(pre_value,            20, ",{%sv%s:", kq, kq);
-    char post_value[21];           strcpy(post_value,                  "}");
-
-
-    // -------------------------------------------------------------------------
-    // checks for debugging
-
-    if(rrdset_flag_check(st, RRDSET_FLAG_DEBUG)) {
-        debug(D_RRD_STATS, "%s first_entry_t = %ld, last_entry_t = %ld, duration = %ld, after = %ld, before = %ld, duration = %ld, entries_to_show = %ld, group = %ld"
-              , st->id
-              , rrdset_first_entry_t(st)
-              , rrdset_last_entry_t(st)
-              , rrdset_last_entry_t(st) - rrdset_first_entry_t(st)
-              , after
-              , before
-              , before - after
-              , points
-              , group
-        );
-
-        if(before < after)
-            debug(D_RRD_STATS, "WARNING: %s The newest value in the database (%ld) is earlier than the oldest (%ld)", st->name, before, after);
-
-        if((before - after) > st->entries * st->update_every)
-            debug(D_RRD_STATS, "WARNING: %s The time difference between the oldest and the newest entries (%ld) is higher than the capacity of the database (%ld)", st->name, before - after, st->entries * st->update_every);
-    }
-
-
-    // -------------------------------------------------------------------------
-    // temp arrays for keeping values per dimension
-
-    calculated_number group_values[dimensions]; // keep sums when grouping
-    int               print_hidden[dimensions]; // keep hidden flags
-    int               found_non_zero[dimensions];
-    int               found_non_existing[dimensions];
-
-    // initialize them
-    for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
-        group_values[c] = 0;
-        print_hidden[c] = rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)?1:0;
-        found_non_zero[c] = 0;
-        found_non_existing[c] = 0;
-    }
-
-
-    // error("OLD: points=%d after=%d before=%d group=%d, duration=%d", entries_to_show, before - (st->update_every * group * entries_to_show), before, group, before - after + 1);
-    // rrd2array(st, entries_to_show, before - (st->update_every * group * entries_to_show), before, group_method, only_non_zero);
-    // rrd2rrdr(st, entries_to_show, before - (st->update_every * group * entries_to_show), before, group_method);
-
-    // -------------------------------------------------------------------------
-    // remove dimensions that contain only zeros
-
-    int max_loop = 1;
-    if(only_non_zero) max_loop = 2;
-
-    for(; max_loop ; max_loop--) {
-
-        // -------------------------------------------------------------------------
-        // print the JSON header
-
-        buffer_sprintf(wb, "{\n %scols%s:\n [\n", kq, kq);
-        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%stime%s,%spattern%s:%s%s,%stype%s:%sdatetime%s},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq);
-        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotation%s}},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
-        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotationText%s}}", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
-
-        // print the header for each dimension
-        // and update the print_hidden array for the dimensions that should be hidden
-        int pc = 0;
-        for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
-            if(!print_hidden[c]) {
-                pc++;
-                buffer_sprintf(wb, ",\n     {%sid%s:%s%s,%slabel%s:%s%s%s,%spattern%s:%s%s,%stype%s:%snumber%s}", kq, kq, sq, sq, kq, kq, sq, rd->name, sq, kq, kq, sq, sq, kq, kq, sq, sq);
-            }
-        }
-        if(!pc) {
-            buffer_sprintf(wb, ",\n     {%sid%s:%s%s,%slabel%s:%s%s%s,%spattern%s:%s%s,%stype%s:%snumber%s}", kq, kq, sq, sq, kq, kq, sq, "no data", sq, kq, kq, sq, sq, kq, kq, sq, sq);
-        }
-
-        // print the begin of row data
-        buffer_sprintf(wb, "\n  ],\n    %srows%s:\n [\n", kq, kq);
-
-
-        // -------------------------------------------------------------------------
-        // the main loop
-
-        int annotate_reset = 0;
-        int annotation_count = 0;
-
-        long    t = rrdset_time2slot(st, before),
-                stop_at_t = rrdset_time2slot(st, after),
-                stop_now = 0;
-
-        t -= t % group;
-
-        time_t  now = rrdset_slot2time(st, t),
-                dt = st->update_every;
-
-        long count = 0, printed = 0, group_count = 0;
-        last_timestamp = 0;
-
-        if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG)))
-            debug(D_RRD_STATS, "%s: REQUEST after:%u before:%u, points:%ld, group:%ld, CHART cur:%ld first: %u last:%u, CALC start_t:%ld, stop_t:%ld"
-                  , st->id
-                  , (uint32_t)after
-                  , (uint32_t)before
-                  , points
-                  , group
-                  , st->current_entry
-                  , (uint32_t)rrdset_first_entry_t(st)
-                  , (uint32_t)rrdset_last_entry_t(st)
-                  , t
-                  , stop_at_t
-            );
-
-        long counter = 0;
-        for(; !stop_now ; now -= dt, t--, counter++) {
-            if(t < 0) t = st->entries - 1;
-            if(t == stop_at_t) stop_now = counter;
-
-            int print_this = 0;
-
-            if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG)))
-                debug(D_RRD_STATS, "%s t = %ld, count = %ld, group_count = %ld, printed = %ld, now = %ld, %s %s"
-                      , st->id
-                      , t
-                      , count + 1
-                      , group_count + 1
-                      , printed
-                      , now
-                      , (group_count + 1 == group)?"PRINT":"  -  "
-                      , (now >= after && now <= before)?"RANGE":"  -  "
-                );
-
-
-            // make sure we return data in the proper time range
-            if(now > before) continue;
-            if(now < after) break;
-
-            //if(rrdset_slot2time(st, t) != now)
-            //  error("%s: slot=%ld, now=%ld, slot2time=%ld, diff=%ld, last_entry_t=%ld, rrdset_last_slot=%ld", st->id, t, now, rrdset_slot2time(st,t), now - rrdset_slot2time(st,t), rrdset_last_entry_t(st), rrdset_last_slot(st));
-
-            count++;
-            group_count++;
-
-            // check if we have to print this now
-            if(group_count == group) {
-                if(printed >= points) {
-                    // debug(D_RRD_STATS, "Already printed all rows. Stopping.");
-                    break;
-                }
-
-                // generate the local date time
-                struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
-                if(!tm) { error("localtime() failed."); continue; }
-                if(now > last_timestamp) last_timestamp = now;
-
-                if(printed) buffer_strcat(wb, "]},\n");
-                buffer_strcat(wb, pre_date);
-                buffer_jsdate(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
-                buffer_strcat(wb, post_date);
-
-                print_this = 1;
-            }
-
-            // do the calculations
-            for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
-                storage_number n = rd->values[t];
-                calculated_number value = unpack_storage_number(n);
-
-                if(!does_storage_number_exist(n)) {
-                    value = 0.0;
-                    found_non_existing[c]++;
-                }
-                if(did_storage_number_reset(n)) annotate_reset = 1;
-
-                switch(group_method) {
-                    case GROUP_MAX:
-                        if(abs(value) > abs(group_values[c])) group_values[c] = value;
-                        break;
-
-                    case GROUP_SUM:
-                        group_values[c] += value;
-                        break;
-
-                    default:
-                    case GROUP_AVERAGE:
-                        group_values[c] += value;
-                        if(print_this) group_values[c] /= ( group_count - found_non_existing[c] );
-                        break;
-                }
-            }
-
-            if(print_this) {
-                if(annotate_reset) {
-                    annotation_count++;
-                    buffer_strcat(wb, overflow_annotation);
-                    annotate_reset = 0;
-                }
-                else
-                    buffer_strcat(wb, normal_annotation);
-
-                pc = 0;
-                for(c = 0 ; c < dimensions ; c++) {
-                    if(found_non_existing[c] == group_count) {
-                        // all entries are non-existing
-                        pc++;
-                        buffer_strcat(wb, pre_value);
-                        buffer_strcat(wb, "null");
-                        buffer_strcat(wb, post_value);
-                    }
-                    else if(!print_hidden[c]) {
-                        pc++;
-                        buffer_strcat(wb, pre_value);
-                        buffer_rrd_value(wb, group_values[c]);
-                        buffer_strcat(wb, post_value);
-
-                        if(group_values[c]) found_non_zero[c]++;
-                    }
-
-                    // reset them for the next loop
-                    group_values[c] = 0;
-                    found_non_existing[c] = 0;
-                }
-
-                // if all dimensions are hidden, print a null
-                if(!pc) {
-                    buffer_strcat(wb, pre_value);
-                    buffer_strcat(wb, "null");
-                    buffer_strcat(wb, post_value);
-                }
-
-                printed++;
-                group_count = 0;
-            }
-        }
-
-        if(printed) buffer_strcat(wb, "]}");
-        buffer_strcat(wb, "\n   ]\n}\n");
-
-        if(only_non_zero && max_loop > 1) {
-            int changed = 0;
-            for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
-                group_values[c] = 0;
-                found_non_existing[c] = 0;
-
-                if(!print_hidden[c] && !found_non_zero[c]) {
-                    changed = 1;
-                    print_hidden[c] = 1;
-                }
-            }
-
-            if(changed) buffer_flush(wb);
-            else break;
-        }
-        else break;
-
-    } // max_loop
-
-    debug(D_RRD_STATS, "RRD_STATS_JSON: %s total %zu bytes", st->name, wb->len);
-
-    rrdset_unlock(st);
-    return last_timestamp;
-}
diff --git a/src/rrd2json_api_old.h b/src/rrd2json_api_old.h
deleted file mode 100644
index f8c63814f..000000000
--- a/src/rrd2json_api_old.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef NETDATA_RRD2JSON_API_OLD_H
-#define NETDATA_RRD2JSON_API_OLD_H
-
-extern unsigned long rrdset_info2json_api_old(RRDSET *st, char *options, BUFFER *wb);
-
-extern void rrd_graph2json_api_old(RRDSET *st, char *options, BUFFER *wb);
-
-extern void rrd_all2json_api_old(RRDHOST *host, BUFFER *wb);
-
-extern time_t rrdset2json_api_old(int type, RRDSET *st, BUFFER *wb, long entries_to_show, long group, int group_method
-                                  , time_t after, time_t before, int only_non_zero);
-
-
-#endif //NETDATA_RRD2JSON_API_OLD_H
diff --git a/src/statsd.h b/src/statsd.h
deleted file mode 100644
index 17af098e8..000000000
--- a/src/statsd.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef NETDATA_STATSD_H
-#define NETDATA_STATSD_H
-
-#define STATSD_LISTEN_PORT 8125
-#define STATSD_LISTEN_BACKLOG 4096
-
-extern void *statsd_main(void *ptr);
-
-#endif //NETDATA_STATSD_H
diff --git a/src/web_api_old.c b/src/web_api_old.c
deleted file mode 100644
index 373e7e9f8..000000000
--- a/src/web_api_old.c
+++ /dev/null
@@ -1,237 +0,0 @@
-#include "common.h"
-
-int web_client_api_old_data_request(RRDHOST *host, struct web_client *w, char *url, int datasource_type) {
-    if(!url || !*url) {
-        buffer_flush(w->response.data);
-        buffer_sprintf(w->response.data, "Incomplete request.");
-        return 400;
-    }
-
-    RRDSET *st = NULL;
-
-    char *args = strchr(url, '?');
-    if(args) {
-        *args='\0';
-        args = &args[1];
-    }
-
-    // get the name of the data to show
-    char *tok = mystrsep(&url, "/");
-    if(!tok) tok = "";
-
-    // do we have such a data set?
-    if(*tok) {
-        debug(D_WEB_CLIENT, "%llu: Searching for RRD data with name '%s'.", w->id, tok);
-        st = rrdset_find_byname(host, tok);
-        if(!st) st = rrdset_find(host, tok);
-    }
-
-    if(!st) {
-        // we don't have it
-        // try to send a file with that name
-        buffer_flush(w->response.data);
-        return(mysendfile(w, tok));
-    }
-
-    // we have it
-    debug(D_WEB_CLIENT, "%llu: Found RRD data with name '%s'.", w->id, tok);
-
-    // how many entries does the client want?
-    int lines = (int)st->entries;
-    int group_count = 1;
-    time_t after = 0, before = 0;
-    int group_method = GROUP_AVERAGE;
-    int nonzero = 0;
-
-    if(url) {
-        // parse the lines required
-        tok = mystrsep(&url, "/");
-        if(tok) lines = str2i(tok);
-        if(lines < 1) lines = 1;
-    }
-    if(url) {
-        // parse the group count required
-        tok = mystrsep(&url, "/");
-        if(tok && *tok) group_count = str2i(tok);
-        if(group_count < 1) group_count = 1;
-        //if(group_count > save_history / 20) group_count = save_history / 20;
-    }
-    if(url) {
-        // parse the grouping method required
-        tok = mystrsep(&url, "/");
-        if(tok && *tok) {
-            if(strcmp(tok, "max") == 0) group_method = GROUP_MAX;
-            else if(strcmp(tok, "average") == 0) group_method = GROUP_AVERAGE;
-            else if(strcmp(tok, "sum") == 0) group_method = GROUP_SUM;
-            else debug(D_WEB_CLIENT, "%llu: Unknown group method '%s'", w->id, tok);
-        }
-    }
-    if(url) {
-        // parse after time
-        tok = mystrsep(&url, "/");
-        if(tok && *tok) after = str2ul(tok);
-        if(after < 0) after = 0;
-    }
-    if(url) {
-        // parse before time
-        tok = mystrsep(&url, "/");
-        if(tok && *tok) before = str2ul(tok);
-        if(before < 0) before = 0;
-    }
-    if(url) {
-        // parse nonzero
-        tok = mystrsep(&url, "/");
-        if(tok && *tok && strcmp(tok, "nonzero") == 0) nonzero = 1;
-    }
-
-    w->response.data->contenttype = CT_APPLICATION_JSON;
-    buffer_flush(w->response.data);
-
-    char *google_version = "0.6";
-    char *google_reqId = "0";
-    char *google_sig = "0";
-    char *google_out = "json";
-    char *google_responseHandler = "google.visualization.Query.setResponse";
-    char *google_outFileName = NULL;
-    time_t last_timestamp_in_data = 0;
-    if(datasource_type == DATASOURCE_DATATABLE_JSON || datasource_type == DATASOURCE_DATATABLE_JSONP) {
-
-        w->response.data->contenttype = CT_APPLICATION_X_JAVASCRIPT;
-
-        while(args) {
-            tok = mystrsep(&args, "&");
-            if(tok && *tok) {
-                char *name = mystrsep(&tok, "=");
-                if(name && *name && strcmp(name, "tqx") == 0) {
-                    char *key = mystrsep(&tok, ":");
-                    char *value = mystrsep(&tok, ";");
-                    if(key && value && *key && *value) {
-                        if(strcmp(key, "version") == 0)
-                            google_version = value;
-
-                        else if(strcmp(key, "reqId") == 0)
-                            google_reqId = value;
-
-                        else if(strcmp(key, "sig") == 0)
-                            google_sig = value;
-
-                        else if(strcmp(key, "out") == 0)
-                            google_out = value;
-
-                        else if(strcmp(key, "responseHandler") == 0)
-                            google_responseHandler = value;
-
-                        else if(strcmp(key, "outFileName") == 0)
-                            google_outFileName = value;
-                    }
-                }
-            }
-        }
-
-        debug(D_WEB_CLIENT_ACCESS, "%llu: GOOGLE JSONP: version = '%s', reqId = '%s', sig = '%s', out = '%s', responseHandler = '%s', outFileName = '%s'",
-                w->id, google_version, google_reqId, google_sig, google_out, google_responseHandler, google_outFileName
-        );
-
-        if(datasource_type == DATASOURCE_DATATABLE_JSONP) {
-            last_timestamp_in_data = strtoul(google_sig, NULL, 0);
-
-            // check the client wants json
-            if(strcmp(google_out, "json") != 0) {
-                buffer_sprintf(w->response.data,
-                        "%s({version:'%s',reqId:'%s',status:'error',errors:[{reason:'invalid_query',message:'output format is not supported',detailed_message:'the format %s requested is not supported by netdata.'}]});",
-                        google_responseHandler, google_version, google_reqId, google_out);
-                return 200;
-            }
-        }
-    }
-
-    if(datasource_type == DATASOURCE_DATATABLE_JSONP) {
-        buffer_sprintf(w->response.data,
-                "%s({version:'%s',reqId:'%s',status:'ok',sig:'%ld',table:",
-                google_responseHandler, google_version, google_reqId, st->last_updated.tv_sec);
-    }
-
-    debug(D_WEB_CLIENT_ACCESS, "%llu: Sending RRD data '%s' (id %s, %d lines, %d group, %d group_method, %ld after, %ld before).",
-            w->id, st->name, st->id, lines, group_count, group_method, after, before);
-
-    time_t timestamp_in_data = rrdset2json_api_old(datasource_type, st, w->response.data, lines, group_count
-                                                   , group_method, (unsigned long) after, (unsigned long) before
-                                                   , nonzero);
-
-    if(datasource_type == DATASOURCE_DATATABLE_JSONP) {
-        if(timestamp_in_data > last_timestamp_in_data)
-            buffer_strcat(w->response.data, "});");
-
-        else {
-            // the client already has the latest data
-            buffer_flush(w->response.data);
-            buffer_sprintf(w->response.data,
-                    "%s({version:'%s',reqId:'%s',status:'error',errors:[{reason:'not_modified',message:'Data not modified'}]});",
-                    google_responseHandler, google_version, google_reqId);
-        }
-    }
-
-    return 200;
-}
-
-inline int web_client_api_old_data_request_json(RRDHOST *host, struct web_client *w, char *url) {
-    return web_client_api_old_data_request(host, w, url, DATASOURCE_JSON);
-}
-
-inline int web_client_api_old_data_request_jsonp(RRDHOST *host, struct web_client *w, char *url) {
-    return web_client_api_old_data_request(host, w, url, DATASOURCE_DATATABLE_JSONP);
-}
-
-inline int web_client_api_old_graph_request(RRDHOST *host, struct web_client *w, char *url) {
-    // get the name of the data to show
-    char *tok = mystrsep(&url, "/?&");
-    if(tok && *tok) {
-        debug(D_WEB_CLIENT, "%llu: Searching for RRD data with name '%s'.", w->id, tok);
-
-        // do we have such a data set?
-        RRDSET *st = rrdset_find_byname(host, tok);
-        if(!st) st = rrdset_find(host, tok);
-        if(!st) {
-            // we don't have it
-            // try to send a file with that name
-            buffer_flush(w->response.data);
-            return mysendfile(w, tok);
-        }
-        st->last_accessed_time = now_realtime_sec();
-
-        debug(D_WEB_CLIENT_ACCESS, "%llu: Sending %s.json of RRD_STATS...", w->id, st->name);
-        w->response.data->contenttype = CT_APPLICATION_JSON;
-        buffer_flush(w->response.data);
-        rrd_graph2json_api_old(st, url, w->response.data);
-        return 200;
-    }
-
-    buffer_flush(w->response.data);
-    buffer_strcat(w->response.data, "Graph name?\r\n");
-    return 400;
-}
-
-inline int web_client_api_old_list_request(RRDHOST *host, struct web_client *w, char *url) {
-    (void)url;
-
-    buffer_flush(w->response.data);
-    RRDSET *st;
-
-    rrdhost_rdlock(host);
-    rrdset_foreach_read(st, host) {
-        if(rrdset_is_available_for_viewers(st))
-            buffer_sprintf(w->response.data, "%s\n", st->name);
-    }
-    rrdhost_unlock(host);
-
-    return 200;
-}
-
-inline int web_client_api_old_all_json(RRDHOST *host, struct web_client *w, char *url) {
-    (void)url;
-
-    w->response.data->contenttype = CT_APPLICATION_JSON;
-    buffer_flush(w->response.data);
-    rrd_all2json_api_old(host, w->response.data);
-    return 200;
-}
diff --git a/src/web_api_old.h b/src/web_api_old.h
deleted file mode 100644
index dff48c2f3..000000000
--- a/src/web_api_old.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef NETDATA_WEB_API_OLD_H
-#define NETDATA_WEB_API_OLD_H
-
-#include "common.h"
-
-extern int web_client_api_old_data_request(RRDHOST *host, struct web_client *w, char *url, int datasource_type);
-extern int web_client_api_old_data_request_json(RRDHOST *host, struct web_client *w, char *url);
-extern int web_client_api_old_data_request_jsonp(RRDHOST *host, struct web_client *w, char *url);
-extern int web_client_api_old_graph_request(RRDHOST *host, struct web_client *w, char *url);
-extern int web_client_api_old_list_request(RRDHOST *host, struct web_client *w, char *url);
-extern int web_client_api_old_all_json(RRDHOST *host, struct web_client *w, char *url);
-
-#endif //NETDATA_WEB_API_OLD_H
diff --git a/src/web_server.c b/src/web_server.c
deleted file mode 100644
index 31c546411..000000000
--- a/src/web_server.c
+++ /dev/null
@@ -1,1292 +0,0 @@
-#include "common.h"
-
-// this file includes 3 web servers:
-//
-// 1. single-threaded, based on select()
-// 2. multi-threaded, based on poll() that spawns threads to handle the requests, based on select()
-// 3. static-threaded, based on poll() using a fixed number of threads (configured at netdata.conf)
-
-WEB_SERVER_MODE web_server_mode = WEB_SERVER_MODE_STATIC_THREADED;
-
-// --------------------------------------------------------------------------------------
-
-WEB_SERVER_MODE web_server_mode_id(const char *mode) {
-    if(!strcmp(mode, "none"))
-        return WEB_SERVER_MODE_NONE;
-    else if(!strcmp(mode, "single") || !strcmp(mode, "single-threaded"))
-        return WEB_SERVER_MODE_SINGLE_THREADED;
-    else if(!strcmp(mode, "static") || !strcmp(mode, "static-threaded"))
-        return WEB_SERVER_MODE_STATIC_THREADED;
-    else // if(!strcmp(mode, "multi") || !strcmp(mode, "multi-threaded"))
-        return WEB_SERVER_MODE_MULTI_THREADED;
-}
-
-const char *web_server_mode_name(WEB_SERVER_MODE id) {
-    switch(id) {
-        case WEB_SERVER_MODE_NONE:
-            return "none";
-
-        case WEB_SERVER_MODE_SINGLE_THREADED:
-            return "single-threaded";
-
-        case WEB_SERVER_MODE_STATIC_THREADED:
-            return "static-threaded";
-
-        default:
-        case WEB_SERVER_MODE_MULTI_THREADED:
-            return "multi-threaded";
-    }
-}
-
-// --------------------------------------------------------------------------------------
-// API sockets
-
-static LISTEN_SOCKETS api_sockets = {
-        .config_section  = CONFIG_SECTION_WEB,
-        .default_bind_to = "*",
-        .default_port    = API_LISTEN_PORT,
-        .backlog         = API_LISTEN_BACKLOG
-};
-
-int api_listen_sockets_setup(void) {
-    int socks = listen_sockets_setup(&api_sockets);
-
-    if(!socks)
-        fatal("LISTENER: Cannot listen on any API socket. Exiting...");
-
-    return socks;
-}
-
-
-// --------------------------------------------------------------------------------------
-// access lists
-
-SIMPLE_PATTERN *web_allow_connections_from = NULL;
-SIMPLE_PATTERN *web_allow_streaming_from = NULL;
-SIMPLE_PATTERN *web_allow_netdataconf_from = NULL;
-
-// WEB_CLIENT_ACL
-SIMPLE_PATTERN *web_allow_dashboard_from = NULL;
-SIMPLE_PATTERN *web_allow_registry_from = NULL;
-SIMPLE_PATTERN *web_allow_badges_from = NULL;
-
-static void web_client_update_acl_matches(struct web_client *w) {
-    w->acl = WEB_CLIENT_ACL_NONE;
-
-    if(!web_allow_dashboard_from || simple_pattern_matches(web_allow_dashboard_from, w->client_ip))
-        w->acl |= WEB_CLIENT_ACL_DASHBOARD;
-
-    if(!web_allow_registry_from || simple_pattern_matches(web_allow_registry_from, w->client_ip))
-        w->acl |= WEB_CLIENT_ACL_REGISTRY;
-
-    if(!web_allow_badges_from || simple_pattern_matches(web_allow_badges_from, w->client_ip))
-        w->acl |= WEB_CLIENT_ACL_BADGE;
-}
-
-
-// --------------------------------------------------------------------------------------
-
-static void log_connection(struct web_client *w, const char *msg) {
-    log_access("%llu: %d '[%s]:%s' '%s'", w->id, gettid(), w->client_ip, w->client_port, msg);
-}
-
-// ----------------------------------------------------------------------------
-// allocate and free web_clients
-
-static void web_client_zero(struct web_client *w) {
-    // zero everything about it - but keep the buffers
-
-    // remember the pointers to the buffers
-    BUFFER *b1 = w->response.data;
-    BUFFER *b2 = w->response.header;
-    BUFFER *b3 = w->response.header_output;
-
-    // empty the buffers
-    buffer_flush(b1);
-    buffer_flush(b2);
-    buffer_flush(b3);
-
-    freez(w->user_agent);
-
-    // zero everything
-    memset(w, 0, sizeof(struct web_client));
-
-    // restore the pointers of the buffers
-    w->response.data = b1;
-    w->response.header = b2;
-    w->response.header_output = b3;
-}
-
-static void web_client_free(struct web_client *w) {
-    buffer_free(w->response.header_output);
-    buffer_free(w->response.header);
-    buffer_free(w->response.data);
-    freez(w->user_agent);
-    freez(w);
-}
-
-static struct web_client *web_client_alloc(void) {
-    struct web_client *w = callocz(1, sizeof(struct web_client));
-    w->response.data = buffer_create(NETDATA_WEB_RESPONSE_INITIAL_SIZE);
-    w->response.header = buffer_create(NETDATA_WEB_RESPONSE_HEADER_SIZE);
-    w->response.header_output = buffer_create(NETDATA_WEB_RESPONSE_HEADER_SIZE);
-    return w;
-}
-
-// ----------------------------------------------------------------------------
-// web clients caching
-
-// When clients connect and disconnect, avoid allocating and releasing memory.
-// Instead, when new clients get connected, reuse any memory previously allocated
-// for serving web clients that are now disconnected.
-
-// The size of the cache is adaptive. It caches the structures of 2x
-// the number of currently connected clients.
-
-// Comments per server:
-// SINGLE-THREADED : 1 cache is maintained
-// MULTI-THREADED  : 1 cache is maintained
-// STATIC-THREADED : 1 cache for each thred of the web server
-
-struct clients_cache {
-    pid_t pid;
-
-    struct web_client *used;    // the structures of the currently connected clients
-    size_t used_count;          // the count the currently connected clients
-
-    struct web_client *avail;   // the cached structures, available for future clients
-    size_t avail_count;         // the number of cached structures
-
-    size_t reused;              // the number of re-uses
-    size_t allocated;           // the number of allocations
-};
-
-static __thread struct clients_cache web_clients_cache = {
-        .pid = 0,
-        .used = NULL,
-        .used_count = 0,
-        .avail = NULL,
-        .avail_count = 0,
-        .allocated = 0,
-        .reused = 0
-};
-
-static inline void web_client_cache_verify(int force) {
-#ifdef NETDATA_INTERNAL_CHECKS
-    static __thread size_t count = 0;
-    count++;
-
-    if(unlikely(force || count > 1000)) {
-        count = 0;
-
-        struct web_client *w;
-        size_t used = 0, avail = 0;
-        for(w = web_clients_cache.used; w ; w = w->next) used++;
-        for(w = web_clients_cache.avail; w ; w = w->next) avail++;
-
-        info("web_client_cache has %zu (%zu) used and %zu (%zu) available clients, allocated %zu, reused %zu (hit %zu%%)."
-             , used, web_clients_cache.used_count
-             , avail, web_clients_cache.avail_count
-             , web_clients_cache.allocated
-             , web_clients_cache.reused
-             , (web_clients_cache.allocated + web_clients_cache.reused)?(web_clients_cache.reused * 100 / (web_clients_cache.allocated + web_clients_cache.reused)):0
-        );
-    }
-#else
-    if(unlikely(force)) {
-        info("web_client_cache has %zu used and %zu available clients, allocated %zu, reused %zu (hit %zu%%)."
-             , web_clients_cache.used_count
-             , web_clients_cache.avail_count
-             , web_clients_cache.allocated
-             , web_clients_cache.reused
-             , (web_clients_cache.allocated + web_clients_cache.reused)?(web_clients_cache.reused * 100 / (web_clients_cache.allocated + web_clients_cache.reused)):0
-            );
-    }
-#endif
-}
-
-// destroy the cache and free all the memory it uses
-static void web_client_cache_destroy(void) {
-#ifdef NETDATA_INTERNAL_CHECKS
-    if(unlikely(web_clients_cache.pid != 0 && web_clients_cache.pid != gettid()))
-        error("Oops! wrong thread accessing the cache. Expected %d, found %d", (int)web_clients_cache.pid, (int)gettid());
-
-    web_client_cache_verify(1);
-#endif
-
-    netdata_thread_disable_cancelability();
-
-    struct web_client *w, *t;
-
-    w = web_clients_cache.used;
-    while(w) {
-        t = w;
-        w = w->next;
-        web_client_free(t);
-    }
-    web_clients_cache.used = NULL;
-    web_clients_cache.used_count = 0;
-
-    w = web_clients_cache.avail;
-    while(w) {
-        t = w;
-        w = w->next;
-        web_client_free(t);
-    }
-    web_clients_cache.avail = NULL;
-    web_clients_cache.avail_count = 0;
-
-    netdata_thread_enable_cancelability();
-}
-
-static struct web_client *web_client_get_from_cache_or_allocate() {
-
-#ifdef NETDATA_INTERNAL_CHECKS
-    if(unlikely(web_clients_cache.pid == 0))
-        web_clients_cache.pid = gettid();
-
-    if(unlikely(web_clients_cache.pid != 0 && web_clients_cache.pid != gettid()))
-        error("Oops! wrong thread accessing the cache. Expected %d, found %d", (int)web_clients_cache.pid, (int)gettid());
-#endif
-
-    netdata_thread_disable_cancelability();
-
-    struct web_client *w = web_clients_cache.avail;
-
-    if(w) {
-        // get it from avail
-        if (w == web_clients_cache.avail) web_clients_cache.avail = w->next;
-        if(w->prev) w->prev->next = w->next;
-        if(w->next) w->next->prev = w->prev;
-        web_clients_cache.avail_count--;
-        web_client_zero(w);
-        web_clients_cache.reused++;
-    }
-    else {
-        // allocate it
-        w = web_client_alloc();
-        web_clients_cache.allocated++;
-    }
-
-    // link it to used web clients
-    if (web_clients_cache.used) web_clients_cache.used->prev = w;
-    w->next = web_clients_cache.used;
-    w->prev = NULL;
-    web_clients_cache.used = w;
-    web_clients_cache.used_count++;
-
-    // initialize it
-    w->id = web_client_connected();
-    w->mode = WEB_CLIENT_MODE_NORMAL;
-
-    netdata_thread_enable_cancelability();
-
-    return w;
-}
-
-static void web_client_release(struct web_client *w) {
-#ifdef NETDATA_INTERNAL_CHECKS
-    if(unlikely(web_clients_cache.pid != 0 && web_clients_cache.pid != gettid()))
-        error("Oops! wrong thread accessing the cache. Expected %d, found %d", (int)web_clients_cache.pid, (int)gettid());
-
-    if(unlikely(w->running))
-        error("%llu: releasing web client from %s port %s, but it still running.", w->id, w->client_ip, w->client_port);
-#endif
-
-    debug(D_WEB_CLIENT_ACCESS, "%llu: Closing web client from %s port %s.", w->id, w->client_ip, w->client_port);
-
-    log_connection(w, "DISCONNECTED");
-    web_client_request_done(w);
-    web_client_disconnected();
-
-    netdata_thread_disable_cancelability();
-
-    if(web_server_mode != WEB_SERVER_MODE_STATIC_THREADED) {
-        if (w->ifd != -1) close(w->ifd);
-        if (w->ofd != -1 && w->ofd != w->ifd) close(w->ofd);
-        w->ifd = w->ofd = -1;
-    }
-
-    // unlink it from the used
-    if (w == web_clients_cache.used) web_clients_cache.used = w->next;
-    if(w->prev) w->prev->next = w->next;
-    if(w->next) w->next->prev = w->prev;
-    web_clients_cache.used_count--;
-
-    if(web_clients_cache.avail_count >= 2 * web_clients_cache.used_count) {
-        // we have too many of them - free it
-        web_client_free(w);
-    }
-    else {
-        // link it to the avail
-        if (web_clients_cache.avail) web_clients_cache.avail->prev = w;
-        w->next = web_clients_cache.avail;
-        w->prev = NULL;
-        web_clients_cache.avail = w;
-        web_clients_cache.avail_count++;
-    }
-
-    netdata_thread_enable_cancelability();
-}
-
-
-// ----------------------------------------------------------------------------
-// high level web clients connection management
-
-static void web_client_initialize_connection(struct web_client *w) {
-    int flag = 1;
-    if(setsockopt(w->ifd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) != 0)
-        error("%llu: failed to enable TCP_NODELAY on socket fd %d.", w->id, w->ifd);
-
-    flag = 1;
-    if(setsockopt(w->ifd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int)) != 0)
-        error("%llu: failed to enable SO_KEEPALIVE on socket fd %d.", w->id, w->ifd);
-
-    web_client_update_acl_matches(w);
-
-    w->origin[0] = '*'; w->origin[1] = '\0';
-    w->cookie1[0] = '\0'; w->cookie2[0] = '\0';
-    freez(w->user_agent); w->user_agent = NULL;
-
-    web_client_enable_wait_receive(w);
-
-    log_connection(w, "CONNECTED");
-
-    web_client_cache_verify(0);
-}
-
-static struct web_client *web_client_create_on_fd(int fd, const char *client_ip, const char *client_port) {
-    struct web_client *w;
-
-    w = web_client_get_from_cache_or_allocate();
-    w->ifd = w->ofd = fd;
-
-    strncpyz(w->client_ip, client_ip, sizeof(w->client_ip) - 1);
-    strncpyz(w->client_port, client_port, sizeof(w->client_port) - 1);
-
-    if(unlikely(!*w->client_ip))   strcpy(w->client_ip,   "-");
-    if(unlikely(!*w->client_port)) strcpy(w->client_port, "-");
-
-    web_client_initialize_connection(w);
-    return(w);
-}
-
-static struct web_client *web_client_create_on_listenfd(int listener) {
-    struct web_client *w;
-
-    w = web_client_get_from_cache_or_allocate();
-    w->ifd = w->ofd = accept_socket(listener, SOCK_NONBLOCK, w->client_ip, sizeof(w->client_ip), w->client_port, sizeof(w->client_port), web_allow_connections_from);
-
-    if(unlikely(!*w->client_ip))   strcpy(w->client_ip,   "-");
-    if(unlikely(!*w->client_port)) strcpy(w->client_port, "-");
-
-    if (w->ifd == -1) {
-        if(errno == EPERM)
-            log_connection(w, "ACCESS DENIED");
-        else {
-            log_connection(w, "CONNECTION FAILED");
-            error("%llu: Failed to accept new incoming connection.", w->id);
-        }
-
-        web_client_release(w);
-        return NULL;
-    }
-
-    web_client_initialize_connection(w);
-    return(w);
-}
-
-
-// --------------------------------------------------------------------------------------
-// the thread of a single client - for the MULTI-THREADED web server
-
-// 1. waits for input and output, using async I/O
-// 2. it processes HTTP requests
-// 3. it generates HTTP responses
-// 4. it copies data from input to output if mode is FILECOPY
-
-int web_client_timeout = DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS;
-int web_client_first_request_timeout = DEFAULT_TIMEOUT_TO_RECEIVE_FIRST_WEB_REQUEST;
-
-static void multi_threaded_web_client_worker_main_cleanup(void *ptr) {
-    struct web_client *w = ptr;
-    WEB_CLIENT_IS_DEAD(w);
-    w->running = 0;
-}
-
-static void *multi_threaded_web_client_worker_main(void *ptr) {
-    netdata_thread_cleanup_push(multi_threaded_web_client_worker_main_cleanup, ptr);
-
-            struct web_client *w = ptr;
-            w->running = 1;
-
-            struct pollfd fds[2], *ifd, *ofd;
-            int retval, timeout_ms;
-            nfds_t fdmax = 0;
-
-            while(!netdata_exit) {
-                if(unlikely(web_client_check_dead(w))) {
-                    debug(D_WEB_CLIENT, "%llu: client is dead.", w->id);
-                    break;
-                }
-                else if(unlikely(!web_client_has_wait_receive(w) && !web_client_has_wait_send(w))) {
-                    debug(D_WEB_CLIENT, "%llu: client is not set for neither receiving nor sending data.", w->id);
-                    break;
-                }
-
-                if(unlikely(w->ifd < 0 || w->ofd < 0)) {
-                    error("%llu: invalid file descriptor, ifd = %d, ofd = %d (required 0 <= fd", w->id, w->ifd, w->ofd);
-                    break;
-                }
-
-                if(w->ifd == w->ofd) {
-                    fds[0].fd = w->ifd;
-                    fds[0].events = 0;
-                    fds[0].revents = 0;
-
-                    if(web_client_has_wait_receive(w)) fds[0].events |= POLLIN;
-                    if(web_client_has_wait_send(w))    fds[0].events |= POLLOUT;
-
-                    fds[1].fd = -1;
-                    fds[1].events = 0;
-                    fds[1].revents = 0;
-
-                    ifd = ofd = &fds[0];
-
-                    fdmax = 1;
-                }
-                else {
-                    fds[0].fd = w->ifd;
-                    fds[0].events = 0;
-                    fds[0].revents = 0;
-                    if(web_client_has_wait_receive(w)) fds[0].events |= POLLIN;
-                    ifd = &fds[0];
-
-                    fds[1].fd = w->ofd;
-                    fds[1].events = 0;
-                    fds[1].revents = 0;
-                    if(web_client_has_wait_send(w))    fds[1].events |= POLLOUT;
-                    ofd = &fds[1];
-
-                    fdmax = 2;
-                }
-
-                debug(D_WEB_CLIENT, "%llu: Waiting socket async I/O for %s %s", w->id, web_client_has_wait_receive(w)?"INPUT":"", web_client_has_wait_send(w)?"OUTPUT":"");
-                errno = 0;
-                timeout_ms = web_client_timeout * 1000;
-                retval = poll(fds, fdmax, timeout_ms);
-
-                if(unlikely(netdata_exit)) break;
-
-                if(unlikely(retval == -1)) {
-                    if(errno == EAGAIN || errno == EINTR) {
-                        debug(D_WEB_CLIENT, "%llu: EAGAIN received.", w->id);
-                        continue;
-                    }
-
-                    debug(D_WEB_CLIENT, "%llu: LISTENER: poll() failed (input fd = %d, output fd = %d). Closing client.", w->id, w->ifd, w->ofd);
-                    break;
-                }
-                else if(unlikely(!retval)) {
-                    debug(D_WEB_CLIENT, "%llu: Timeout while waiting socket async I/O for %s %s", w->id, web_client_has_wait_receive(w)?"INPUT":"", web_client_has_wait_send(w)?"OUTPUT":"");
-                    break;
-                }
-
-                if(unlikely(netdata_exit)) break;
-
-                int used = 0;
-                if(web_client_has_wait_send(w) && ofd->revents & POLLOUT) {
-                    used++;
-                    if(web_client_send(w) < 0) {
-                        debug(D_WEB_CLIENT, "%llu: Cannot send data to client. Closing client.", w->id);
-                        break;
-                    }
-                }
-
-                if(unlikely(netdata_exit)) break;
-
-                if(web_client_has_wait_receive(w) && (ifd->revents & POLLIN || ifd->revents & POLLPRI)) {
-                    used++;
-                    if(web_client_receive(w) < 0) {
-                        debug(D_WEB_CLIENT, "%llu: Cannot receive data from client. Closing client.", w->id);
-                        break;
-                    }
-
-                    if(w->mode == WEB_CLIENT_MODE_NORMAL) {
-                        debug(D_WEB_CLIENT, "%llu: Attempting to process received data.", w->id);
-                        web_client_process_request(w);
-
-                        // if the sockets are closed, may have transferred this client
-                        // to plugins.d
-                        if(unlikely(w->mode == WEB_CLIENT_MODE_STREAM))
-                            break;
-                    }
-                }
-
-                if(unlikely(!used)) {
-                    debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on socket.", w->id);
-                    break;
-                }
-            }
-
-            if(w->mode != WEB_CLIENT_MODE_STREAM)
-                log_connection(w, "DISCONNECTED");
-
-            web_client_request_done(w);
-
-            debug(D_WEB_CLIENT, "%llu: done...", w->id);
-
-            // close the sockets/files now
-            // to free file descriptors
-            if(w->ifd == w->ofd) {
-                if(w->ifd != -1) close(w->ifd);
-            }
-            else {
-                if(w->ifd != -1) close(w->ifd);
-                if(w->ofd != -1) close(w->ofd);
-            }
-            w->ifd = -1;
-            w->ofd = -1;
-
-    netdata_thread_cleanup_pop(1);
-    return NULL;
-}
-
-// --------------------------------------------------------------------------------------
-// the main socket listener - MULTI-THREADED
-
-// 1. it accepts new incoming requests on our port
-// 2. creates a new web_client for each connection received
-// 3. spawns a new netdata_thread to serve the client (this is optimal for keep-alive clients)
-// 4. cleans up old web_clients that their netdata_threads have been exited
-
-static void web_client_multi_threaded_web_server_release_clients(void) {
-    struct web_client *w;
-    for(w = web_clients_cache.used; w ; ) {
-        if(unlikely(!w->running && web_client_check_dead(w))) {
-            struct web_client *t = w->next;
-            web_client_release(w);
-            w = t;
-        }
-        else
-            w = w->next;
-    }
-}
-
-static void web_client_multi_threaded_web_server_stop_all_threads(void) {
-    struct web_client *w;
-
-    int found = 1, max = 2 * USEC_PER_SEC, step = 50000;
-    for(w = web_clients_cache.used; w ; w = w->next) {
-        if(w->running) {
-            found++;
-            info("stopping web client %s, id %llu", w->client_ip, w->id);
-            netdata_thread_cancel(w->thread);
-        }
-    }
-
-    while(found && max > 0) {
-        max -= step;
-        info("Waiting %d web threads to finish...", found);
-        sleep_usec(step);
-        found = 0;
-        for(w = web_clients_cache.used; w ; w = w->next)
-            if(w->running) found++;
-    }
-
-    if(found)
-        error("%d web threads are taking too long to finish. Giving up.", found);
-}
-
-static struct pollfd *socket_listen_main_multi_threaded_fds = NULL;
-
-static void socket_listen_main_multi_threaded_cleanup(void *data) {
-    struct netdata_static_thread *static_thread = (struct netdata_static_thread *)data;
-    static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
-
-    info("cleaning up...");
-
-    info("releasing allocated memory...");
-    freez(socket_listen_main_multi_threaded_fds);
-
-    info("closing all sockets...");
-    listen_sockets_close(&api_sockets);
-
-    info("stopping all running web server threads...");
-    web_client_multi_threaded_web_server_stop_all_threads();
-
-    info("freeing web clients cache...");
-    web_client_cache_destroy();
-
-    info("cleanup completed.");
-    static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
-}
-
-#define CLEANUP_EVERY_EVENTS 60
-void *socket_listen_main_multi_threaded(void *ptr) {
-    netdata_thread_cleanup_push(socket_listen_main_multi_threaded_cleanup, ptr);
-
-    web_server_mode = WEB_SERVER_MODE_MULTI_THREADED;
-    web_server_is_multithreaded = 1;
-
-    struct web_client *w;
-    int retval, counter = 0;
-
-    if(!api_sockets.opened)
-        fatal("LISTENER: No sockets to listen to.");
-
-    socket_listen_main_multi_threaded_fds = callocz(sizeof(struct pollfd), api_sockets.opened);
-
-    size_t i;
-    for(i = 0; i < api_sockets.opened ;i++) {
-        socket_listen_main_multi_threaded_fds[i].fd = api_sockets.fds[i];
-        socket_listen_main_multi_threaded_fds[i].events = POLLIN;
-        socket_listen_main_multi_threaded_fds[i].revents = 0;
-
-        info("Listening on '%s'", (api_sockets.fds_names[i])?api_sockets.fds_names[i]:"UNKNOWN");
-    }
-
-    int timeout_ms = 1 * 1000;
-
-    while(!netdata_exit) {
-
-        // debug(D_WEB_CLIENT, "LISTENER: Waiting...");
-        retval = poll(socket_listen_main_multi_threaded_fds, api_sockets.opened, timeout_ms);
-
-        if(unlikely(retval == -1)) {
-            error("LISTENER: poll() failed.");
-            continue;
-        }
-        else if(unlikely(!retval)) {
-            debug(D_WEB_CLIENT, "LISTENER: poll() timeout.");
-            counter++;
-            continue;
-        }
-
-        for(i = 0 ; i < api_sockets.opened ; i++) {
-            short int revents = socket_listen_main_multi_threaded_fds[i].revents;
-
-            // check for new incoming connections
-            if(revents & POLLIN || revents & POLLPRI) {
-                socket_listen_main_multi_threaded_fds[i].revents = 0;
-
-                w = web_client_create_on_listenfd(socket_listen_main_multi_threaded_fds[i].fd);
-                if(unlikely(!w)) {
-                    // no need for error log - web_client_create_on_listenfd already logged the error
-                    continue;
-                }
-
-                if(api_sockets.fds_families[i] == AF_UNIX)
-                    web_client_set_unix(w);
-                else
-                    web_client_set_tcp(w);
-
-                char tag[NETDATA_THREAD_TAG_MAX + 1];
-                snprintfz(tag, NETDATA_THREAD_TAG_MAX, "WEB_CLIENT[%llu,[%s]:%s]", w->id, w->client_ip, w->client_port);
-
-                w->running = 1;
-                if(netdata_thread_create(&w->thread, tag, NETDATA_THREAD_OPTION_DONT_LOG, multi_threaded_web_client_worker_main, w) != 0) {
-                    w->running = 0;
-                    web_client_release(w);
-                }
-            }
-        }
-
-        counter++;
-        if(counter > CLEANUP_EVERY_EVENTS) {
-            counter = 0;
-            web_client_multi_threaded_web_server_release_clients();
-        }
-    }
-
-    netdata_thread_cleanup_pop(1);
-    return NULL;
-}
-
-
-// --------------------------------------------------------------------------------------
-// the main socket listener - SINGLE-THREADED
-
-struct web_client *single_threaded_clients[FD_SETSIZE];
-
-static inline int single_threaded_link_client(struct web_client *w, fd_set *ifds, fd_set *ofds, fd_set *efds, int *max) {
-    if(unlikely(web_client_check_dead(w) || (!web_client_has_wait_receive(w) && !web_client_has_wait_send(w)))) {
-        return 1;
-    }
-
-    if(unlikely(w->ifd < 0 || w->ifd >= (int)FD_SETSIZE || w->ofd < 0 || w->ofd >= (int)FD_SETSIZE)) {
-        error("%llu: invalid file descriptor, ifd = %d, ofd = %d (required 0 <= fd < FD_SETSIZE (%d)", w->id, w->ifd, w->ofd, (int)FD_SETSIZE);
-        return 1;
-    }
-
-    FD_SET(w->ifd, efds);
-    if(unlikely(*max < w->ifd)) *max = w->ifd;
-
-    if(unlikely(w->ifd != w->ofd)) {
-        if(*max < w->ofd) *max = w->ofd;
-        FD_SET(w->ofd, efds);
-    }
-
-    if(web_client_has_wait_receive(w)) FD_SET(w->ifd, ifds);
-    if(web_client_has_wait_send(w))    FD_SET(w->ofd, ofds);
-
-    single_threaded_clients[w->ifd] = w;
-    single_threaded_clients[w->ofd] = w;
-
-    return 0;
-}
-
-static inline int single_threaded_unlink_client(struct web_client *w, fd_set *ifds, fd_set *ofds, fd_set *efds) {
-    FD_CLR(w->ifd, efds);
-    if(unlikely(w->ifd != w->ofd)) FD_CLR(w->ofd, efds);
-
-    if(web_client_has_wait_receive(w)) FD_CLR(w->ifd, ifds);
-    if(web_client_has_wait_send(w))    FD_CLR(w->ofd, ofds);
-
-    single_threaded_clients[w->ifd] = NULL;
-    single_threaded_clients[w->ofd] = NULL;
-
-    if(unlikely(web_client_check_dead(w) || (!web_client_has_wait_receive(w) && !web_client_has_wait_send(w)))) {
-        return 1;
-    }
-
-    return 0;
-}
-
-static void socket_listen_main_single_threaded_cleanup(void *data) {
-    struct netdata_static_thread *static_thread = (struct netdata_static_thread *)data;
-    static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
-
-    info("closing all sockets...");
-    listen_sockets_close(&api_sockets);
-
-    info("freeing web clients cache...");
-    web_client_cache_destroy();
-
-    info("cleanup completed.");
-    static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
-}
-
-void *socket_listen_main_single_threaded(void *ptr) {
-    netdata_thread_cleanup_push(socket_listen_main_single_threaded_cleanup, ptr);
-    web_server_mode = WEB_SERVER_MODE_SINGLE_THREADED;
-    web_server_is_multithreaded = 0;
-
-    struct web_client *w;
-
-    if(!api_sockets.opened)
-        fatal("LISTENER: no listen sockets available.");
-
-    size_t i;
-    for(i = 0; i < (size_t)FD_SETSIZE ; i++)
-        single_threaded_clients[i] = NULL;
-
-    fd_set ifds, ofds, efds, rifds, rofds, refds;
-    FD_ZERO (&ifds);
-    FD_ZERO (&ofds);
-    FD_ZERO (&efds);
-    int fdmax = 0;
-
-    for(i = 0; i < api_sockets.opened ; i++) {
-        if (api_sockets.fds[i] < 0 || api_sockets.fds[i] >= (int)FD_SETSIZE)
-            fatal("LISTENER: Listen socket %d is not ready, or invalid.", api_sockets.fds[i]);
-
-        info("Listening on '%s'", (api_sockets.fds_names[i])?api_sockets.fds_names[i]:"UNKNOWN");
-
-        FD_SET(api_sockets.fds[i], &ifds);
-        FD_SET(api_sockets.fds[i], &efds);
-        if(fdmax < api_sockets.fds[i])
-            fdmax = api_sockets.fds[i];
-    }
-
-    while(!netdata_exit) {
-        debug(D_WEB_CLIENT_ACCESS, "LISTENER: single threaded web server waiting (fdmax = %d)...", fdmax);
-
-        struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
-        rifds = ifds;
-        rofds = ofds;
-        refds = efds;
-        int retval = select(fdmax+1, &rifds, &rofds, &refds, &tv);
-
-        if(unlikely(retval == -1)) {
-            error("LISTENER: select() failed.");
-            continue;
-        }
-        else if(likely(retval)) {
-            debug(D_WEB_CLIENT_ACCESS, "LISTENER: got something.");
-
-            for(i = 0; i < api_sockets.opened ; i++) {
-                if (FD_ISSET(api_sockets.fds[i], &rifds)) {
-                    debug(D_WEB_CLIENT_ACCESS, "LISTENER: new connection.");
-                    w = web_client_create_on_listenfd(api_sockets.fds[i]);
-                    if(unlikely(!w))
-                        continue;
-
-                    if(api_sockets.fds_families[i] == AF_UNIX)
-                        web_client_set_unix(w);
-                    else
-                        web_client_set_tcp(w);
-
-                    if (single_threaded_link_client(w, &ifds, &ofds, &ifds, &fdmax) != 0) {
-                        web_client_release(w);
-                    }
-                }
-            }
-
-            for(i = 0 ; i <= (size_t)fdmax ; i++) {
-                if(likely(!FD_ISSET(i, &rifds) && !FD_ISSET(i, &rofds) && !FD_ISSET(i, &refds)))
-                    continue;
-
-                w = single_threaded_clients[i];
-                if(unlikely(!w)) {
-                    // error("no client on slot %zu", i);
-                    continue;
-                }
-
-                if(unlikely(single_threaded_unlink_client(w, &ifds, &ofds, &efds) != 0)) {
-                    // error("failed to unlink client %zu", i);
-                    web_client_release(w);
-                    continue;
-                }
-
-                if (unlikely(FD_ISSET(w->ifd, &refds) || FD_ISSET(w->ofd, &refds))) {
-                    // error("no input on client %zu", i);
-                    web_client_release(w);
-                    continue;
-                }
-
-                if (unlikely(web_client_has_wait_receive(w) && FD_ISSET(w->ifd, &rifds))) {
-                    if (unlikely(web_client_receive(w) < 0)) {
-                        // error("cannot read from client %zu", i);
-                        web_client_release(w);
-                        continue;
-                    }
-
-                    if (w->mode != WEB_CLIENT_MODE_FILECOPY) {
-                        debug(D_WEB_CLIENT, "%llu: Processing received data.", w->id);
-                        web_client_process_request(w);
-                    }
-                }
-
-                if (unlikely(web_client_has_wait_send(w) && FD_ISSET(w->ofd, &rofds))) {
-                    if (unlikely(web_client_send(w) < 0)) {
-                        // error("cannot send data to client %zu", i);
-                        debug(D_WEB_CLIENT, "%llu: Cannot send data to client. Closing client.", w->id);
-                        web_client_release(w);
-                        continue;
-                    }
-                }
-
-                if(unlikely(single_threaded_link_client(w, &ifds, &ofds, &efds, &fdmax) != 0)) {
-                    // error("failed to link client %zu", i);
-                    web_client_release(w);
-                }
-            }
-        }
-        else {
-            debug(D_WEB_CLIENT_ACCESS, "LISTENER: single threaded web server timeout.");
-        }
-    }
-
-    netdata_thread_cleanup_pop(1);
-    return NULL;
-}
-
-
-// --------------------------------------------------------------------------------------
-// the main socket listener - STATIC-THREADED
-
-struct web_server_static_threaded_worker {
-    netdata_thread_t thread;
-
-    int id;
-    int running;
-
-    size_t max_sockets;
-
-    volatile size_t connected;
-    volatile size_t disconnected;
-    volatile size_t receptions;
-    volatile size_t sends;
-    volatile size_t max_concurrent;
-
-    volatile size_t files_read;
-    volatile size_t file_reads;
-};
-
-static long long static_threaded_workers_count = 1;
-static struct web_server_static_threaded_worker *static_workers_private_data = NULL;
-static __thread struct web_server_static_threaded_worker *worker_private = NULL;
-
-// ----------------------------------------------------------------------------
-
-static inline int web_server_check_client_status(struct web_client *w) {
-    if(unlikely(web_client_check_dead(w) || (!web_client_has_wait_receive(w) && !web_client_has_wait_send(w))))
-        return -1;
-
-    return 0;
-}
-
-// ----------------------------------------------------------------------------
-// web server files
-
-static void *web_server_file_add_callback(POLLINFO *pi, short int *events, void *data) {
-    struct web_client *w = (struct web_client *)data;
-
-    worker_private->files_read++;
-
-    debug(D_WEB_CLIENT, "%llu: ADDED FILE READ ON FD %d", w->id, pi->fd);
-    *events = POLLIN;
-    pi->data = w;
-    return w;
-}
-
-static void web_werver_file_del_callback(POLLINFO *pi) {
-    struct web_client *w = (struct web_client *)pi->data;
-    debug(D_WEB_CLIENT, "%llu: RELEASE FILE READ ON FD %d", w->id, pi->fd);
-
-    w->pollinfo_filecopy_slot = 0;
-
-    if(unlikely(!w->pollinfo_slot)) {
-        debug(D_WEB_CLIENT, "%llu: CROSS WEB CLIENT CLEANUP (iFD %d, oFD %d)", w->id, pi->fd, w->ofd);
-        web_client_release(w);
-    }
-}
-
-static int web_server_file_read_callback(POLLINFO *pi, short int *events) {
-    struct web_client *w = (struct web_client *)pi->data;
-
-    // if there is no POLLINFO linked to this, it means the client disconnected
-    // stop the file reading too
-    if(unlikely(!w->pollinfo_slot)) {
-        debug(D_WEB_CLIENT, "%llu: PREVENTED ATTEMPT TO READ FILE ON FD %d, ON CLOSED WEB CLIENT", w->id, pi->fd);
-        return -1;
-    }
-
-    if(unlikely(w->mode != WEB_CLIENT_MODE_FILECOPY || w->ifd == w->ofd)) {
-        debug(D_WEB_CLIENT, "%llu: PREVENTED ATTEMPT TO READ FILE ON FD %d, ON NON-FILECOPY WEB CLIENT", w->id, pi->fd);
-        return -1;
-    }
-
-    debug(D_WEB_CLIENT, "%llu: READING FILE ON FD %d", w->id, pi->fd);
-
-    worker_private->file_reads++;
-    ssize_t ret = unlikely(web_client_read_file(w));
-
-    if(likely(web_client_has_wait_send(w))) {
-        POLLJOB *p = pi->p;                                        // our POLLJOB
-        POLLINFO *wpi = pollinfo_from_slot(p, w->pollinfo_slot);  // POLLINFO of the client socket
-
-        debug(D_WEB_CLIENT, "%llu: SIGNALING W TO SEND (iFD %d, oFD %d)", w->id, pi->fd, wpi->fd);
-        p->fds[wpi->slot].events |= POLLOUT;
-    }
-
-    if(unlikely(ret <= 0 || w->ifd == w->ofd)) {
-        debug(D_WEB_CLIENT, "%llu: DONE READING FILE ON FD %d", w->id, pi->fd);
-        return -1;
-    }
-
-    *events = POLLIN;
-    return 0;
-}
-
-static int web_server_file_write_callback(POLLINFO *pi, short int *events) {
-    (void)pi;
-    (void)events;
-
-    error("Writing to web files is not supported!");
-
-    return -1;
-}
-
-// ----------------------------------------------------------------------------
-// web server clients
-
-static void *web_server_add_callback(POLLINFO *pi, short int *events, void *data) {
-    (void)data;
-
-    worker_private->connected++;
-
-    size_t concurrent = worker_private->connected - worker_private->disconnected;
-    if(unlikely(concurrent > worker_private->max_concurrent))
-        worker_private->max_concurrent = concurrent;
-
-    *events = POLLIN;
-
-    debug(D_WEB_CLIENT_ACCESS, "LISTENER on %d: new connection.", pi->fd);
-    struct web_client *w = web_client_create_on_fd(pi->fd, pi->client_ip, pi->client_port);
-    w->pollinfo_slot = pi->slot;
-
-    if(unlikely(pi->socktype == AF_UNIX))
-        web_client_set_unix(w);
-    else
-        web_client_set_tcp(w);
-
-    debug(D_WEB_CLIENT, "%llu: ADDED CLIENT FD %d", w->id, pi->fd);
-    return w;
-}
-
-// TCP client disconnected
-static void web_server_del_callback(POLLINFO *pi) {
-    worker_private->disconnected++;
-
-    struct web_client *w = (struct web_client *)pi->data;
-
-    w->pollinfo_slot = 0;
-    if(unlikely(w->pollinfo_filecopy_slot)) {
-        POLLINFO *fpi = pollinfo_from_slot(pi->p, w->pollinfo_filecopy_slot);  // POLLINFO of the client socket
-        debug(D_WEB_CLIENT, "%llu: THE CLIENT WILL BE FRED BY READING FILE JOB ON FD %d", w->id, fpi->fd);
-    }
-    else {
-        if(web_client_flag_check(w, WEB_CLIENT_FLAG_DONT_CLOSE_SOCKET))
-            pi->flags |= POLLINFO_FLAG_DONT_CLOSE;
-
-        debug(D_WEB_CLIENT, "%llu: CLOSING CLIENT FD %d", w->id, pi->fd);
-        web_client_release(w);
-    }
-}
-
-static int web_server_rcv_callback(POLLINFO *pi, short int *events) {
-    worker_private->receptions++;
-
-    struct web_client *w = (struct web_client *)pi->data;
-    int fd = pi->fd;
-
-    if(unlikely(web_client_receive(w) < 0))
-        return -1;
-
-    debug(D_WEB_CLIENT, "%llu: processing received data on fd %d.", w->id, fd);
-    web_client_process_request(w);
-
-    if(unlikely(w->mode == WEB_CLIENT_MODE_FILECOPY)) {
-        if(w->pollinfo_filecopy_slot == 0) {
-            debug(D_WEB_CLIENT, "%llu: FILECOPY DETECTED ON FD %d", w->id, pi->fd);
-
-            if (unlikely(w->ifd != -1 && w->ifd != w->ofd && w->ifd != fd)) {
-                // add a new socket to poll_events, with the same
-                debug(D_WEB_CLIENT, "%llu: CREATING FILECOPY SLOT ON FD %d", w->id, pi->fd);
-
-                POLLINFO *fpi = poll_add_fd(
-                        pi->p
-                        , w->ifd
-                        , 0
-                        , POLLINFO_FLAG_CLIENT_SOCKET
-                        , "FILENAME"
-                        , ""
-                        , web_server_file_add_callback
-                        , web_werver_file_del_callback
-                        , web_server_file_read_callback
-                        , web_server_file_write_callback
-                        , (void *) w
-                );
-
-                if(fpi)
-                    w->pollinfo_filecopy_slot = fpi->slot;
-                else {
-                    error("Failed to add filecopy fd. Closing client.");
-                    return -1;
-                }
-            }
-        }
-    }
-    else {
-        if(unlikely(w->ifd == fd && web_client_has_wait_receive(w)))
-            *events |= POLLIN;
-    }
-
-    if(unlikely(w->ofd == fd && web_client_has_wait_send(w)))
-        *events |= POLLOUT;
-
-    return web_server_check_client_status(w);
-}
-
-static int web_server_snd_callback(POLLINFO *pi, short int *events) {
-    worker_private->sends++;
-
-    struct web_client *w = (struct web_client *)pi->data;
-    int fd = pi->fd;
-
-    debug(D_WEB_CLIENT, "%llu: sending data on fd %d.", w->id, fd);
-
-    if(unlikely(web_client_send(w) < 0))
-        return -1;
-
-    if(unlikely(w->ifd == fd && web_client_has_wait_receive(w)))
-        *events |= POLLIN;
-
-    if(unlikely(w->ofd == fd && web_client_has_wait_send(w)))
-        *events |= POLLOUT;
-
-    return web_server_check_client_status(w);
-}
-
-static void web_server_tmr_callback(void *timer_data) {
-    worker_private = (struct web_server_static_threaded_worker *)timer_data;
-
-    static __thread RRDSET *st = NULL;
-    static __thread RRDDIM *rd_user = NULL, *rd_system = NULL;
-
-    if(unlikely(!st)) {
-        char id[100 + 1];
-        char title[100 + 1];
-
-        snprintfz(id, 100, "web_thread%d_cpu", worker_private->id + 1);
-        snprintfz(title, 100, "NetData web server thread No %d CPU usage", worker_private->id + 1);
-
-        st = rrdset_create_localhost(
-                "netdata"
-                , id
-                , NULL
-                , "web"
-                , "netdata.web_cpu"
-                , title
-                , "milliseconds/s"
-                , "web"
-                , "stats"
-                , 132000 + worker_private->id
-                , default_rrd_update_every
-                , RRDSET_TYPE_STACKED
-        );
-
-        rd_user   = rrddim_add(st, "user", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
-        rd_system = rrddim_add(st, "system", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
-    }
-    else
-        rrdset_next(st);
-
-    struct rusage rusage;
-    getrusage(RUSAGE_THREAD, &rusage);
-    rrddim_set_by_pointer(st, rd_user, rusage.ru_utime.tv_sec * 1000000ULL + rusage.ru_utime.tv_usec);
-    rrddim_set_by_pointer(st, rd_system, rusage.ru_stime.tv_sec * 1000000ULL + rusage.ru_stime.tv_usec);
-    rrdset_done(st);
-}
-
-// ----------------------------------------------------------------------------
-// web server worker thread
-
-static void socket_listen_main_static_threaded_worker_cleanup(void *ptr) {
-    worker_private = (struct web_server_static_threaded_worker *)ptr;
-
-    info("freeing local web clients cache...");
-    web_client_cache_destroy();
-
-    info("stopped after %zu connects, %zu disconnects (max concurrent %zu), %zu receptions and %zu sends",
-            worker_private->connected,
-            worker_private->disconnected,
-            worker_private->max_concurrent,
-            worker_private->receptions,
-            worker_private->sends
-    );
-
-    worker_private->running = 0;
-}
-
-void *socket_listen_main_static_threaded_worker(void *ptr) {
-    worker_private = (struct web_server_static_threaded_worker *)ptr;
-    worker_private->running = 1;
-
-    netdata_thread_cleanup_push(socket_listen_main_static_threaded_worker_cleanup, ptr);
-
-            poll_events(&api_sockets
-                        , web_server_add_callback
-                        , web_server_del_callback
-                        , web_server_rcv_callback
-                        , web_server_snd_callback
-                        , web_server_tmr_callback
-                        , web_allow_connections_from
-                        , NULL
-                        , web_client_first_request_timeout
-                        , web_client_timeout
-                        , default_rrd_update_every * 1000 // timer_milliseconds
-                        , ptr // timer_data
-                        , worker_private->max_sockets
-            );
-
-    netdata_thread_cleanup_pop(1);
-    return NULL;
-}
-
-
-// ----------------------------------------------------------------------------
-// web server main thread - also becomes a worker
-
-static void socket_listen_main_static_threaded_cleanup(void *ptr) {
-    struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
-    static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
-
-    int i, found = 0, max = 2 * USEC_PER_SEC, step = 50000;
-
-    // we start from 1, - 0 is self
-    for(i = 1; i < static_threaded_workers_count; i++) {
-        if(static_workers_private_data[i].running) {
-            found++;
-            info("stopping worker %d", i + 1);
-            netdata_thread_cancel(static_workers_private_data[i].thread);
-        }
-        else
-            info("found stopped worker %d", i + 1);
-    }
-
-    while(found && max > 0) {
-        max -= step;
-        info("Waiting %d static web threads to finish...", found);
-        sleep_usec(step);
-        found = 0;
-
-        // we start from 1, - 0 is self
-        for(i = 1; i < static_threaded_workers_count; i++) {
-            if (static_workers_private_data[i].running)
-                found++;
-        }
-    }
-
-    if(found)
-        error("%d static web threads are taking too long to finish. Giving up.", found);
-
-    info("closing all web server sockets...");
-    listen_sockets_close(&api_sockets);
-
-    info("all static web threads stopped.");
-    static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
-}
-
-void *socket_listen_main_static_threaded(void *ptr) {
-    netdata_thread_cleanup_push(socket_listen_main_static_threaded_cleanup, ptr);
-            web_server_mode = WEB_SERVER_MODE_STATIC_THREADED;
-
-            if(!api_sockets.opened)
-                fatal("LISTENER: no listen sockets available.");
-
-            // 6 threads is the optimal value
-            // since 6 are the parallel connections browsers will do
-            // so, if the machine has more CPUs, avoid using resources unnecessarily
-            int def_thread_count = (processors > 6)?6:processors;
-
-            static_threaded_workers_count = config_get_number(CONFIG_SECTION_WEB, "web server threads", def_thread_count);
-            if(static_threaded_workers_count < 1) static_threaded_workers_count = 1;
-
-            size_t max_sockets = (size_t)config_get_number(CONFIG_SECTION_WEB, "web server max sockets", (long long int)(rlimit_nofile.rlim_cur / 2));
-
-            static_workers_private_data = callocz((size_t)static_threaded_workers_count, sizeof(struct web_server_static_threaded_worker));
-
-            web_server_is_multithreaded = (static_threaded_workers_count > 1);
-
-            int i;
-            for(i = 1; i < static_threaded_workers_count; i++) {
-                static_workers_private_data[i].id = i;
-                static_workers_private_data[i].max_sockets = max_sockets / static_threaded_workers_count;
-
-                char tag[50 + 1];
-                snprintfz(tag, 50, "WEB_SERVER[static%d]", i+1);
-
-                info("starting worker %d", i+1);
-                netdata_thread_create(&static_workers_private_data[i].thread, tag, NETDATA_THREAD_OPTION_DEFAULT, socket_listen_main_static_threaded_worker, (void *)&static_workers_private_data[i]);
-            }
-
-            // and the main one
-            static_workers_private_data[0].max_sockets = max_sockets / static_threaded_workers_count;
-            socket_listen_main_static_threaded_worker((void *)&static_workers_private_data[0]);
-
-    netdata_thread_cleanup_pop(1);
-    return NULL;
-}
diff --git a/streaming/Makefile.am b/streaming/Makefile.am
new file mode 100644
index 000000000..84048948b
--- /dev/null
+++ b/streaming/Makefile.am
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_libconfig_DATA = \
+    stream.conf \
+    $(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/streaming/Makefile.in b/streaming/Makefile.in
new file mode 100644
index 000000000..c3a5fdc74
--- /dev/null
+++ b/streaming/Makefile.in
@@ -0,0 +1,521 @@
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+
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+
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+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+	@$(NORMAL_INSTALL)
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(libconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(libconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_libconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(libconfigdir)'; $(am__uninstall_files_from_dir)
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(libconfigdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-dist_libconfigDATA
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-dist_libconfigDATA
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dist_libconfigDATA install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-generic pdf pdf-am ps ps-am tags-am uninstall \
+	uninstall-am uninstall-dist_libconfigDATA
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/streaming/README.md b/streaming/README.md
new file mode 100644
index 000000000..1f3bd7391
--- /dev/null
+++ b/streaming/README.md
@@ -0,0 +1,413 @@
+# Metrics streaming
+
+Each netdata is able to replicate/mirror its database to another netdata, by streaming collected
+metrics, in real-time to it. This is quite different to [data archiving to third party time-series
+databases](../backends).
+
+When a netdata streams metrics to another netdata, the receiving one is able to perform everything
+a netdata performs:
+
+- visualize them with a dashboard
+- run health checks that trigger alarms and send alarm notifications
+- archive metrics to a backend time-series database
+
+The following configurations are supported:
+
+#### netdata without a database or web API (headless collector)
+
+Local netdata (`slave`), **without any database or alarms**, collects metrics and sends them to
+another netdata (`master`).
+
+The user can take the full functionality of the `slave` netdata at
+http://master.ip:19999/host/slave.hostname/. Alarms for the `slave` are served by the `master`.
+
+In this mode the `slave` is just a plain data collector.
+It runs with... **5MB** of RAM (yes, you read correct), spawns all external plugins, but instead
+of maintaining a local database and accepting dashboard requests, it streams all metrics to the
+`master`.
+
+The same `master` can collect data for any number of `slaves`.
+
+#### database replication
+
+Local netdata (`slave`), **with a local database (and possibly alarms)**, collects metrics and
+sends them to another netdata (`master`).
+
+The user can use all the functions **at both** http://slave.ip:19999/ and
+http://master.ip:19999/host/slave.hostname/.
+
+The `slave` and the `master` may have different data retention policies for the same metrics.
+
+Alarms for the `slave` are triggered by **both** the `slave` and the `master` (and actually
+each can have different alarms configurations or have alarms disabled).
+
+#### netdata proxies
+
+Local netdata (`slave`), with or without a database, collects metrics and sends them to another
+netdata (`proxy`), which may or may not maintain a database, which forwards them to another
+netdata (`master`).
+
+Alarms for the slave can be triggered by any of the involved hosts that maintains a database.
+
+Any number of daisy chaining netdata servers are supported, each with or without a database and
+with or without alarms for the `slave` metrics.
+
+#### mix and match with backends
+
+All nodes that maintain a database can also send their data to a backend database.
+This allows quite complex setups.
+
+Example:
+
+1. netdata `A`, `B` do not maintain a database and stream metrics to netdata `C`(live streaming functionality, i.e. this PR)
+2. netdata `C` maintains a database for `A`, `B`, `C` and archives all metrics to `graphite` with 10 second detail (backends functionality)
+3. netdata `C` also streams data for `A`, `B`, `C` to netdata `D`, which also collects data from `E`, `F` and `G` from another DMZ (live streaming functionality, i.e. this PR)
+4. netdata `D` is just a proxy, without a database, that streams all data to a remote site at netdata `H`
+5. netdata `H` maintains a database for `A`, `B`, `C`, `D`, `E`, `F`, `G`, `H` and sends all data to `opentsdb` with 5 seconds detail (backends functionality)
+6. alarms are triggered by `H` for all hosts
+7. users can use all the netdata that maintain a database to view metrics (i.e. at `H` all hosts can be viewed).
+
+#### netdata.conf configuration
+
+These are options that affect the operation of netdata in this area:
+
+```
+[global]
+    memory mode = none | ram | save | map
+```
+
+`[global].memory mode = none` disables the database at this host. This also disables health
+monitoring (there cannot be health monitoring without a database).
+
+```
+[web]
+    mode = none | static-threaded | single-threaded | multi-threaded
+```
+
+`[web].mode = none` disables the API (netdata will not listen to any ports).
+This also disables the registry (there cannot be a registry without an API).
+
+```
+[backend]
+    enabled = yes | no
+    type = graphite | opentsdb
+    destination = IP:PORT ...
+    update every = 10
+```
+
+`[backend]` configures data archiving to a backend (it archives all databases maintained on
+this host).
+
+#### streaming configuration
+
+A new file is introduced: [stream.conf](stream.conf) (to edit it on your system run
+`/etc/netdata/edit-config stream.conf`). This file holds streaming configuration for both the
+sending and the receiving netdata.
+
+API keys are used to authorize the communication of a pair of sending-receiving netdata.
+Once the communication is authorized, the sending netdata can push metrics for any number of hosts.
+
+You can generate an API key with the command `uuidgen`. API keys are just random GUIDs.
+You can use the same API key on all your netdata, or use a different API key for any pair of
+sending-receiving netdata.
+
+##### options for the sending node
+
+This is the section for the sending netdata. On the receiving node, `[stream].enabled` can be `no`.
+If it is `yes`, the receiving node will also stream the metrics to another node (i.e. it will be
+a `proxy`).
+
+```
+[stream]
+    enabled = yes | no
+    destination = IP:PORT ...
+    api key = XXXXXXXXXXX
+```
+
+This is an overview of how these options can be combined:
+
+target | memory<br/>mode | web<br/>mode | stream<br/>enabled | backend | alarms | dashboard
+-------|:-----------:|:---:|:------:|:-------:|:---------:|:----:
+headless collector|`none`|`none`|`yes`|only for `data source = as collected`|not possible|no
+headless proxy|`none`|not `none`|`yes`|only for `data source = as collected`|not possible|no
+proxy with db|not `none`|not `none`|`yes`|possible|possible|yes
+central netdata|not `none`|not `none`|`no`|possible|possible|yes
+
+##### options for the receiving node
+
+`stream.conf` looks like this:
+
+```sh
+# replace API_KEY with your uuidgen generated GUID
+[API_KEY]
+    enabled = yes
+    default history = 3600
+    default memory mode = save
+    health enabled by default = auto
+    allow from = *
+```
+
+You can add many such sections, one for each API key. The above are used as default values for
+all hosts pushed with this API key.
+
+You can also add sections like this:
+
+```sh
+# replace MACHINE_GUID with the slave /var/lib/netdata/registry/netdata.public.unique.id
+[MACHINE_GUID]
+    enabled = yes
+    history = 3600
+    memory mode = save
+    health enabled = yes
+    allow from = *
+```
+
+The above is the receiver configuration of a single host, at the receiver end. `MACHINE_GUID` is
+the unique id the netdata generating the metrics (i.e. the netdata that originally collects
+them `/var/lib/netdata/registry/netdata.unique.id`). So, metrics for netdata `A` that pass through
+any number of other netdata, will have the same `MACHINE_GUID`.
+
+####### allow from
+
+`allow from` settings are [netdata simple patterns](../libnetdata/simple_pattern): string matches
+that use `*` as wildcard (any number of times) and a `!` prefix for a negative match.
+So: `allow from = !10.1.2.3 10.*` will allow all IPs in `10.*` except `10.1.2.3`. The order is
+important: left to right, the first positive or negative match is used.
+
+`allow from` is available in netdata v1.9+
+
+#### tracing
+
+When a `slave` is trying to push metrics to a `master` or `proxy`, it logs entries like these:
+
+```
+2017-02-25 01:57:44: netdata: ERROR: Failed to connect to '10.11.12.1', port '19999' (errno 111, Connection refused)
+2017-02-25 01:57:44: netdata: ERROR: STREAM costa-pc [send to 10.11.12.1:19999]: failed to connect
+2017-02-25 01:58:04: netdata: INFO : STREAM costa-pc [send to 10.11.12.1:19999]: initializing communication...
+2017-02-25 01:58:04: netdata: INFO : STREAM costa-pc [send to 10.11.12.1:19999]: waiting response from remote netdata...
+2017-02-25 01:58:14: netdata: INFO : STREAM costa-pc [send to 10.11.12.1:19999]: established communication - sending metrics...
+2017-02-25 01:58:14: netdata: ERROR: STREAM costa-pc [send]: discarding 1900 bytes of metrics already in the buffer.
+2017-02-25 01:58:14: netdata: INFO : STREAM costa-pc [send]: ready - sending metrics...
+```
+
+The receiving end (`proxy` or `master`) logs entries like these:
+
+```
+2017-02-25 01:58:04: netdata: INFO : STREAM [receive from [10.11.12.11]:33554]: new client connection.
+2017-02-25 01:58:04: netdata: INFO : STREAM costa-pc [10.11.12.11]:33554: receive thread created (task id 7698)
+2017-02-25 01:58:14: netdata: INFO : Host 'costa-pc' with guid '12345678-b5a6-11e6-8a50-00508db7e9c9' initialized, os: linux, update every: 1, memory mode: ram, history entries: 3600, streaming: disabled, health: enabled, cache_dir: '/var/cache/netdata/12345678-b5a6-11e6-8a50-00508db7e9c9', varlib_dir: '/var/lib/netdata/12345678-b5a6-11e6-8a50-00508db7e9c9', health_log: '/var/lib/netdata/12345678-b5a6-11e6-8a50-00508db7e9c9/health/health-log.db', alarms default handler: '/usr/libexec/netdata/plugins.d/alarm-notify.sh', alarms default recipient: 'root'
+2017-02-25 01:58:14: netdata: INFO : STREAM costa-pc [receive from [10.11.12.11]:33554]: initializing communication...
+2017-02-25 01:58:14: netdata: INFO : STREAM costa-pc [receive from [10.11.12.11]:33554]: receiving metrics...
+```
+
+For netdata v1.9+, streaming can also be monitored via `access.log`.
+
+
+#### Viewing remote host dashboards, using mirrored databases
+
+On any receiving netdata, that maintains remote databases and has its web server enabled,
+`my-netdata` menu will include a list of the mirrored databases.
+
+![image](https://cloud.githubusercontent.com/assets/2662304/24080824/24cd2d3c-0caf-11e7-909d-a8dd1dbb95d7.png)
+
+Selecting any of these, the server will offer a dashboard using the mirrored metrics.
+
+
+## Monitoring ephemeral nodes
+
+Auto-scaling is probably the most trendy service deployment strategy these days.
+
+Auto-scaling detects the need for additional resources and boots VMs on demand, based on a template. Soon after they start running the applications, a load balancer starts distributing traffic to them, allowing the service to grow horizontally to the scale needed to handle the load. When demands falls, auto-scaling starts shutting down VMs that are no longer needed.
+
+<p align="center">
+<img src="https://cloud.githubusercontent.com/assets/2662304/23627426/65a9074a-02b9-11e7-9664-cd8f258a00af.png"/>
+</p>
+
+What a fantastic feature for controlling infrastructure costs! Pay only for what you need for the time you need it!
+
+In auto-scaling, all servers are ephemeral, they live for just a few hours. Every VM is a brand new instance of the application, that was automatically created based on a template.
+
+So, how can we monitor them? How can we be sure that everything is working as expected on all of them?
+
+### The netdata way
+
+We recently made a significant improvement at the core of netdata to support monitoring such setups.
+
+Following the netdata way of monitoring, we wanted:
+
+1. **real-time performance monitoring**, collecting **_thousands of metrics per server per second_**, visualized in interactive, automatically created dashboards.
+2. **real-time alarms**, for all nodes.
+3. **zero configuration**, all ephemeral servers should have exactly the same configuration, and nothing should be configured at any system for each of the ephemeral nodes. We shouldn't care if 10 or 100 servers are spawned to handle the load.
+4. **self-cleanup**, so that nothing needs to be done for cleaning up the monitoring infrastructure from the hundreds of nodes that may have been monitored through time.
+
+#### How it works
+
+All monitoring solutions, including netdata, work like this:
+
+1. `collect metrics`, from the system and the running applications
+2. `store metrics`, in a time-series database
+3. `examine metrics` periodically, for triggering alarms and sending alarm notifications
+4. `visualize metrics`, so that users can see what exactly is happening
+
+netdata used to be self-contained, so that all these functions were handled entirely by each server. The changes we made, allow each netdata to be configured independently for each function. So, each netdata can now act as:
+
+- a `self contained system`, much like it used to be.
+- a `data collector`, that collects metrics from a host and pushes them to another netdata (with or without a local database and alarms).
+- a `proxy`, that receives metrics from other hosts and pushes them immediately to other netdata servers. netdata proxies can also be `store and forward proxies` meaning that they are able to maintain a local database for all metrics passing through them (with or without alarms).
+- a `time-series database` node, where data are kept, alarms are run and queries are served to visualise the metrics.
+
+### Configuring an auto-scaling setup
+
+<p align="center">
+<img src="https://cloud.githubusercontent.com/assets/2662304/23627468/96daf7ba-02b9-11e7-95ac-1f767dd8dab8.png"/>
+</p>
+
+You need a netdata `master`. This node should not be ephemeral. It will be the node where all ephemeral nodes (let's call them `slaves`) will be sending their metrics.
+
+The master will need to authorize the slaves for accepting their metrics. This is done with an API key.
+
+#### API keys
+
+API keys are just random GUIDs. Use the Linux command `uuidgen` to generate one. You can use the same API key for all your `slaves`, or you can configure one API for each of them. This is entirely your decision.
+
+We suggest to use the same API key for each ephemeral node template you have, so that all replicas of the same ephemeral node will have exactly the same configuration.
+
+I will use this API_KEY: `11111111-2222-3333-4444-555555555555`. Replace it with your own.
+
+#### Configuring the `master`
+
+On the master, edit `/etc/netdata/stream.conf` (to edit it on your system run `/etc/netdata/edit-config stream.conf`) and set these:
+
+```bash
+[11111111-2222-3333-4444-555555555555]
+	# enable/disable this API key
+    enabled = yes
+    
+    # one hour of data for each of the slaves
+    default history = 3600
+    
+    # do not save slave metrics on disk
+    default memory = ram
+    
+    # alarms checks, only while the slave is connected
+    health enabled by default = auto
+```
+*`stream.conf` on master, to enable receiving metrics from slaves using the API key.*
+
+If you used many API keys, you can add one such section for each API key.
+
+When done, restart netdata on the `master` node. It is now ready to receive metrics.
+
+#### Configuring the `slaves`
+
+On each of the slaves, edit `/etc/netdata/stream.conf` (to edit it on your system run `/etc/netdata/edit-config stream.conf`) and set these:
+
+```bash
+[stream]
+    # stream metrics to another netdata
+    enabled = yes
+    
+    # the IP and PORT of the master
+    destination = 10.11.12.13:19999
+	
+	# the API key to use
+    api key = 11111111-2222-3333-4444-555555555555
+```
+*`stream.conf` on slaves, to enable pushing metrics to master at `10.11.12.13:19999`.*
+
+Using just the above configuration, the `slaves` will be pushing their metrics to the `master` netdata, but they will still maintain a local database of the metrics and run health checks. To disable them, edit `/etc/netdata/netdata.conf` and set:
+
+```bash
+[global]
+    # disable the local database
+	memory mode = none
+
+[health]
+    # disable health checks
+    enabled = no
+```
+*`netdata.conf` configuration on slaves, to disable the local database and health checks.*
+
+Keep in mind that setting `memory mode = none` will also force `[health].enabled = no` (health checks require access to a local database). But you can keep the database and disable health checks if you need to. You are however sending all the metrics to the master server, which can handle the health checking (`[health].enabled = yes`)
+
+#### netdata unique id
+
+The file `/var/lib/netdata/registry/netdata.public.unique.id` contains a random GUID that **uniquely identifies each netdata**. This file is automatically generated, by netdata, the first time it is started and remains unaltaired forever.
+
+> If you are building an image to be used for automated provisioning of autoscaled VMs, it important to delete that file from the image, so that each instance of your image will generate its own.
+
+#### Troubleshooting metrics streaming
+
+Both the sender and the receiver of metrics log information at `/var/log/netdata/error.log`.
+
+
+On both master and slave do this:
+
+```
+tail -f /var/log/netdata/error.log | grep STREAM
+```
+
+If the slave manages to connect to the master you will see something like (on the master):
+
+```
+2017-03-09 09:38:52: netdata: INFO : STREAM [receive from [10.11.12.86]:38564]: new client connection.
+2017-03-09 09:38:52: netdata: INFO : STREAM xxx [10.11.12.86]:38564: receive thread created (task id 27721)
+2017-03-09 09:38:52: netdata: INFO : STREAM xxx [receive from [10.11.12.86]:38564]: client willing to stream metrics for host 'xxx' with machine_guid '1234567-1976-11e6-ae19-7cdd9077342a': update every = 1, history = 3600, memory mode = ram, health auto
+2017-03-09 09:38:52: netdata: INFO : STREAM xxx [receive from [10.11.12.86]:38564]: initializing communication...
+2017-03-09 09:38:52: netdata: INFO : STREAM xxx [receive from [10.11.12.86]:38564]: receiving metrics...
+```
+
+and something like this on the slave:
+
+```
+2017-03-09 09:38:28: netdata: INFO : STREAM xxx [send to box:19999]: connecting...
+2017-03-09 09:38:28: netdata: INFO : STREAM xxx [send to box:19999]: initializing communication...
+2017-03-09 09:38:28: netdata: INFO : STREAM xxx [send to box:19999]: waiting response from remote netdata...
+2017-03-09 09:38:28: netdata: INFO : STREAM xxx [send to box:19999]: established communication - sending metrics...
+```
+
+### Archiving to a time-series database
+
+The `master` netdata node can also archive metrics, for all `slaves`, to a time-series database. At the time of this writing, netdata supports:
+
+- graphite
+- opentsdb
+- prometheus
+- json document DBs
+- all the compatibles to the above (e.g. kairosdb, influxdb, etc)
+
+Check the netdata [backends documentation](../backends) for configuring this.
+
+This is how such a solution will work:
+
+<p align="center">
+<img src="https://cloud.githubusercontent.com/assets/2662304/23627295/e3569adc-02b8-11e7-9d55-4014bf98c1b3.png"/>
+</p>
+
+### An advanced setup
+
+netdata also supports `proxies` with and without a local database, and data retention can be different between all nodes.
+
+This means a setup like the following is also possible:
+
+<p align="center">
+<img src="https://cloud.githubusercontent.com/assets/2662304/23629551/bb1fd9c2-02c0-11e7-90f5-cab5a3ed4c53.png"/>
+</p>
+
+
+## proxies
+
+A proxy is a netdata that is receiving metrics from a netdata, and streams them to another netdata.
+
+netdata proxies may or may not maintain a database for the metrics passing through them.
+When they maintain a database, they can also run health checks (alarms and notifications)
+for the remote host that is streaming the metrics.
+
+To configure a proxy, configure it as a receiving and a sending netdata at the same time,
+using [stream.conf](stream.conf).
+
+The sending side of a netdata proxy, connects and disconnects to the final destination of the
+metrics, following the same pattern of the receiving side.
+
+For a practical example see [Monitoring ephemeral nodes](#monitoring-ephemeral-nodes).
+
diff --git a/src/rrdpush.c b/streaming/rrdpush.c
index 8f71c6d4c..df1a2177f 100644
--- a/src/rrdpush.c
+++ b/streaming/rrdpush.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "rrdpush.h"
 
 /*
  * rrdpush
@@ -30,14 +32,46 @@ typedef enum {
     RRDPUSH_MULTIPLE_CONNECTIONS_DENY_NEW
 } RRDPUSH_MULTIPLE_CONNECTIONS_STRATEGY;
 
-int default_rrdpush_enabled = 0;
+static struct config stream_config = {
+        .sections = NULL,
+        .mutex = NETDATA_MUTEX_INITIALIZER,
+        .index = {
+                .avl_tree = {
+                        .root = NULL,
+                        .compar = appconfig_section_compare
+                },
+                .rwlock = AVL_LOCK_INITIALIZER
+        }
+};
+
+unsigned int default_rrdpush_enabled = 0;
 char *default_rrdpush_destination = NULL;
 char *default_rrdpush_api_key = NULL;
+char *default_rrdpush_send_charts_matching = NULL;
+
+static void load_stream_conf() {
+    errno = 0;
+    char *filename = strdupz_path_subpath(netdata_configured_user_config_dir, "stream.conf");
+    if(!appconfig_load(&stream_config, filename, 0)) {
+        info("CONFIG: cannot load user config '%s'. Will try stock config.", filename);
+        freez(filename);
+
+        filename = strdupz_path_subpath(netdata_configured_stock_config_dir, "stream.conf");
+        if(!appconfig_load(&stream_config, filename, 0))
+            info("CONFIG: cannot load stock config '%s'. Running with internal defaults.", filename);
+    }
+    freez(filename);
+}
 
 int rrdpush_init() {
-    default_rrdpush_enabled     = appconfig_get_boolean(&stream_config, CONFIG_SECTION_STREAM, "enabled", default_rrdpush_enabled);
+    // --------------------------------------------------------------------
+    // load stream.conf
+    load_stream_conf();
+
+    default_rrdpush_enabled     = (unsigned int)appconfig_get_boolean(&stream_config, CONFIG_SECTION_STREAM, "enabled", default_rrdpush_enabled);
     default_rrdpush_destination = appconfig_get(&stream_config, CONFIG_SECTION_STREAM, "destination", "");
     default_rrdpush_api_key     = appconfig_get(&stream_config, CONFIG_SECTION_STREAM, "api key", "");
+    default_rrdpush_send_charts_matching      = appconfig_get(&stream_config, CONFIG_SECTION_STREAM, "send charts matching", "*");
     rrdhost_free_orphan_time    = config_get_number(CONFIG_SECTION_GLOBAL, "cleanup orphan hosts after seconds", rrdhost_free_orphan_time);
 
     if(default_rrdpush_enabled && (!default_rrdpush_destination || !*default_rrdpush_destination || !default_rrdpush_api_key || !*default_rrdpush_api_key)) {
@@ -67,17 +101,44 @@ unsigned int remote_clock_resync_iterations = 60;
 #define rrdpush_buffer_lock(host) netdata_mutex_lock(&((host)->rrdpush_sender_buffer_mutex))
 #define rrdpush_buffer_unlock(host) netdata_mutex_unlock(&((host)->rrdpush_sender_buffer_mutex))
 
+static inline int should_send_chart_matching(RRDSET *st) {
+    if(unlikely(!rrdset_flag_check(st, RRDSET_FLAG_ENABLED))) {
+        rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_SEND);
+        rrdset_flag_set(st, RRDSET_FLAG_UPSTREAM_IGNORE);
+    }
+    else if(!rrdset_flag_check(st, RRDSET_FLAG_UPSTREAM_SEND|RRDSET_FLAG_UPSTREAM_IGNORE)) {
+        RRDHOST *host = st->rrdhost;
+
+        if(simple_pattern_matches(host->rrdpush_send_charts_matching, st->id) ||
+            simple_pattern_matches(host->rrdpush_send_charts_matching, st->name)) {
+            rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_IGNORE);
+            rrdset_flag_set(st, RRDSET_FLAG_UPSTREAM_SEND);
+        }
+        else {
+            rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_SEND);
+            rrdset_flag_set(st, RRDSET_FLAG_UPSTREAM_IGNORE);
+        }
+    }
+
+    return(rrdset_flag_check(st, RRDSET_FLAG_UPSTREAM_SEND));
+}
+
 // checks if the current chart definition has been sent
 static inline int need_to_send_chart_definition(RRDSET *st) {
     rrdset_check_rdlock(st);
 
-    if(unlikely(!(rrdset_flag_check(st, RRDSET_FLAG_EXPOSED_UPSTREAM))))
+    if(unlikely(!(rrdset_flag_check(st, RRDSET_FLAG_UPSTREAM_EXPOSED))))
         return 1;
 
     RRDDIM *rd;
-    rrddim_foreach_read(rd, st)
-        if(unlikely(!rd->exposed))
+    rrddim_foreach_read(rd, st) {
+        if(unlikely(!rd->exposed)) {
+            #ifdef NETDATA_INTERNAL_CHECKS
+            info("host '%s', chart '%s', dimension '%s' flag 'exposed' triggered chart refresh to upstream", st->rrdhost->hostname, st->id, rd->id);
+            #endif
             return 1;
+        }
+    }
 
     return 0;
 }
@@ -86,14 +147,27 @@ static inline int need_to_send_chart_definition(RRDSET *st) {
 static inline void rrdpush_send_chart_definition_nolock(RRDSET *st) {
     RRDHOST *host = st->rrdhost;
 
-    rrdset_flag_set(st, RRDSET_FLAG_EXPOSED_UPSTREAM);
+    rrdset_flag_set(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
+
+    // properly set the name for the remote end to parse it
+    char *name = "";
+    if(unlikely(strcmp(st->id, st->name))) {
+        // they differ
+        name = strchr(st->name, '.');
+        if(name)
+            name++;
+        else
+            name = "";
+    }
+
+    // info("CHART '%s' '%s'", st->id, name);
 
     // send the chart
     buffer_sprintf(
             host->rrdpush_sender_buffer
             , "CHART \"%s\" \"%s\" \"%s\" \"%s\" \"%s\" \"%s\" \"%s\" %ld %d \"%s %s %s %s\" \"%s\" \"%s\"\n"
             , st->id
-            , st->name
+            , name
             , st->title
             , st->units
             , st->family
@@ -129,7 +203,7 @@ static inline void rrdpush_send_chart_definition_nolock(RRDSET *st) {
     // send the chart local custom variables
     RRDSETVAR *rs;
     for(rs = st->variables; rs ;rs = rs->next) {
-        if(unlikely(rs->options && RRDVAR_OPTION_ALLOCATED)) {
+        if(unlikely(rs->type == RRDVAR_TYPE_CALCULATED && rs->options & RRDVAR_OPTION_CUSTOM_CHART_VAR)) {
             calculated_number *value = (calculated_number *) rs->value;
 
             buffer_sprintf(
@@ -147,7 +221,7 @@ static inline void rrdpush_send_chart_definition_nolock(RRDSET *st) {
 // sends the current chart dimensions
 static inline void rrdpush_send_chart_metrics_nolock(RRDSET *st) {
     RRDHOST *host = st->rrdhost;
-    buffer_sprintf(host->rrdpush_sender_buffer, "BEGIN \"%s\" %llu\n", st->id, (st->upstream_resync_time > st->last_collected_time.tv_sec)?st->usec_since_last_update:0);
+    buffer_sprintf(host->rrdpush_sender_buffer, "BEGIN \"%s\" %llu\n", st->id, (st->last_collected_time.tv_sec > st->upstream_resync_time)?st->usec_since_last_update:0);
 
     RRDDIM *rd;
     rrddim_foreach_read(rd, st) {
@@ -164,9 +238,12 @@ static inline void rrdpush_send_chart_metrics_nolock(RRDSET *st) {
 
 static void rrdpush_sender_thread_spawn(RRDHOST *host);
 
-void rrdset_push_chart_definition(RRDSET *st) {
+void rrdset_push_chart_definition_now(RRDSET *st) {
     RRDHOST *host = st->rrdhost;
 
+    if(unlikely(!host->rrdpush_send_enabled || !should_send_chart_matching(st)))
+        return;
+
     rrdset_rdlock(st);
     rrdpush_buffer_lock(host);
     rrdpush_send_chart_definition_nolock(st);
@@ -175,11 +252,11 @@ void rrdset_push_chart_definition(RRDSET *st) {
 }
 
 void rrdset_done_push(RRDSET *st) {
-    RRDHOST *host = st->rrdhost;
-
-    if(unlikely(!rrdset_flag_check(st, RRDSET_FLAG_ENABLED)))
+    if(unlikely(!should_send_chart_matching(st)))
         return;
 
+    RRDHOST *host = st->rrdhost;
+
     rrdpush_buffer_lock(host);
 
     if(unlikely(host->rrdpush_send_enabled && !host->rrdpush_sender_spawn))
@@ -239,7 +316,7 @@ static int rrdpush_sender_thread_custom_host_variables_callback(void *rrdvar_ptr
     RRDVAR *rv = (RRDVAR *)rrdvar_ptr;
     RRDHOST *host = (RRDHOST *)host_ptr;
 
-    if(unlikely(rv->type == RRDVAR_TYPE_CALCULATED_ALLOCATED)) {
+    if(unlikely(rv->options & RRDVAR_OPTION_CUSTOM_HOST_VAR && rv->type == RRDVAR_TYPE_CALCULATED)) {
         rrdpush_sender_add_host_variable_to_buffer_nolock(host, rv);
 
         // return 1, so that the traversal will return the number of variables sent
@@ -252,6 +329,8 @@ static int rrdpush_sender_thread_custom_host_variables_callback(void *rrdvar_ptr
 
 static void rrdpush_sender_thread_send_custom_host_variables(RRDHOST *host) {
     int ret = rrdvar_callback_for_all_host_variables(host, rrdpush_sender_thread_custom_host_variables_callback, host);
+    (void)ret;
+
     debug(D_STREAM, "RRDVAR sent %d VARIABLES", ret);
 }
 
@@ -262,7 +341,7 @@ static void rrdpush_sender_thread_reset_all_charts(RRDHOST *host) {
 
     RRDSET *st;
     rrdset_foreach_read(st, host) {
-        rrdset_flag_clear(st, RRDSET_FLAG_EXPOSED_UPSTREAM);
+        rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
 
         st->upstream_resync_time = 0;
 
@@ -475,6 +554,7 @@ void *rrdpush_sender_thread(void *ptr) {
     size_t reconnects_counter = 0;
     size_t sent_bytes = 0;
     size_t sent_bytes_on_this_connection = 0;
+    size_t send_attempts = 0;
 
 
     time_t last_sent_t = 0;
@@ -494,6 +574,8 @@ void *rrdpush_sender_thread(void *ptr) {
 
             // if we don't have socket open, lets wait a bit
             if(unlikely(host->rrdpush_sender_socket == -1)) {
+                send_attempts = 0;
+
                 if(not_connected_loops == 0 && sent_bytes_on_this_connection > 0) {
                     // fast re-connection on first disconnect
                     sleep_usec(USEC_PER_MS * 500); // milliseconds
@@ -509,6 +591,9 @@ void *rrdpush_sender_thread(void *ptr) {
                     // reset the buffer, to properly send charts and metrics
                     rrdpush_sender_thread_data_flush(host);
 
+                    // send from the beginning
+                    begin = 0;
+
                     // make sure the next reconnection will be immediate
                     not_connected_loops = 0;
 
@@ -530,7 +615,7 @@ void *rrdpush_sender_thread(void *ptr) {
                 continue;
             }
             else if(unlikely(now_monotonic_sec() - last_sent_t > timeout)) {
-                error("STREAM %s [send to %s]: could not send metrics for %d seconds - closing connection - we have sent %zu bytes on this connection.", host->hostname, connected_to, timeout, sent_bytes_on_this_connection);
+                error("STREAM %s [send to %s]: could not send metrics for %d seconds - closing connection - we have sent %zu bytes on this connection via %zu send attempts.", host->hostname, connected_to, timeout, sent_bytes_on_this_connection, send_attempts);
                 rrdpush_sender_thread_close_socket(host);
             }
 
@@ -544,6 +629,7 @@ void *rrdpush_sender_thread(void *ptr) {
                 debug(D_STREAM, "STREAM: Requesting data output on streaming socket %d...", ofd->fd);
                 ofd->events = POLLOUT;
                 fdmax = 2;
+                send_attempts++;
             }
             else {
                 debug(D_STREAM, "STREAM: Not requesting data output on streaming socket %d (nothing to send now)...", ofd->fd);
@@ -743,6 +829,7 @@ static int rrdpush_receive(int fd
     int rrdpush_enabled = default_rrdpush_enabled;
     char *rrdpush_destination = default_rrdpush_destination;
     char *rrdpush_api_key = default_rrdpush_api_key;
+    char *rrdpush_send_charts_matching = default_rrdpush_send_charts_matching;
     time_t alarms_delay = 60;
     RRDPUSH_MULTIPLE_CONNECTIONS_STRATEGY rrdpush_multiple_connections_strategy = RRDPUSH_MULTIPLE_CONNECTIONS_ALLOW;
 
@@ -774,6 +861,9 @@ static int rrdpush_receive(int fd
     rrdpush_multiple_connections_strategy = get_multiple_connections_strategy(&stream_config, key, "multiple connections", rrdpush_multiple_connections_strategy);
     rrdpush_multiple_connections_strategy = get_multiple_connections_strategy(&stream_config, machine_guid, "multiple connections", rrdpush_multiple_connections_strategy);
 
+    rrdpush_send_charts_matching = appconfig_get(&stream_config, key, "default proxy send charts matching", rrdpush_send_charts_matching);
+    rrdpush_send_charts_matching = appconfig_get(&stream_config, machine_guid, "proxy send charts matching", rrdpush_send_charts_matching);
+
     tags = appconfig_set_default(&stream_config, machine_guid, "host tags", (tags)?tags:"");
     if(tags && !*tags) tags = NULL;
 
@@ -792,10 +882,11 @@ static int rrdpush_receive(int fd
                 , update_every
                 , history
                 , mode
-                , (health_enabled != CONFIG_BOOLEAN_NO)
-                , (rrdpush_enabled && rrdpush_destination && *rrdpush_destination && rrdpush_api_key && *rrdpush_api_key)
+                , (unsigned int)(health_enabled != CONFIG_BOOLEAN_NO)
+                , (unsigned int)(rrdpush_enabled && rrdpush_destination && *rrdpush_destination && rrdpush_api_key && *rrdpush_api_key)
                 , rrdpush_destination
                 , rrdpush_api_key
+                , rrdpush_send_charts_matching
         );
 
     if(!host) {
@@ -1005,6 +1096,14 @@ int rrdpush_receiver_permission_denied(struct web_client *w) {
     return 401;
 }
 
+int rrdpush_receiver_too_busy_now(struct web_client *w) {
+    // we always respond with the same message and error code
+    // to prevent an attacker from gaining info about the error
+    buffer_flush(w->response.data);
+    buffer_sprintf(w->response.data, "The server is too busy now to accept this request. Try later.");
+    return 503;
+}
+
 int rrdpush_receiver_thread_spawn(RRDHOST *host, struct web_client *w, char *url) {
     (void)host;
 
@@ -1110,6 +1209,26 @@ int rrdpush_receiver_thread_spawn(RRDHOST *host, struct web_client *w, char *url
         }
     }
 
+    if(unlikely(web_client_streaming_rate_t > 0)) {
+        static netdata_mutex_t stream_rate_mutex = NETDATA_MUTEX_INITIALIZER;
+        static volatile time_t last_stream_accepted_t = 0;
+
+        netdata_mutex_lock(&stream_rate_mutex);
+        time_t now = now_realtime_sec();
+
+        if(unlikely(last_stream_accepted_t == 0))
+            last_stream_accepted_t = now;
+
+        if(now - last_stream_accepted_t < web_client_streaming_rate_t) {
+            netdata_mutex_unlock(&stream_rate_mutex);
+            error("STREAM [receive from [%s]:%s]: too busy to accept new streaming request. Will be allowed in %ld secs.", w->client_ip, w->client_port, (long)(web_client_streaming_rate_t - (now - last_stream_accepted_t)));
+            return rrdpush_receiver_too_busy_now(w);
+        }
+
+        last_stream_accepted_t = now;
+        netdata_mutex_unlock(&stream_rate_mutex);
+    }
+
     struct rrdpush_thread *rpt = callocz(1, sizeof(struct rrdpush_thread));
     rpt->fd                = w->ifd;
     rpt->key               = strdupz(key);
diff --git a/src/rrdpush.h b/streaming/rrdpush.h
index bf3d9435c..7bf3db93a 100644
--- a/src/rrdpush.h
+++ b/streaming/rrdpush.h
@@ -1,14 +1,20 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_RRDPUSH_H
-#define NETDATA_RRDPUSH_H
+#define NETDATA_RRDPUSH_H 1
+
+#include "web/server/web_client.h"
+#include "daemon/common.h"
 
-extern int default_rrdpush_enabled;
+extern unsigned int default_rrdpush_enabled;
 extern char *default_rrdpush_destination;
 extern char *default_rrdpush_api_key;
+extern char *default_rrdpush_send_charts_matching;
 extern unsigned int remote_clock_resync_iterations;
 
 extern int rrdpush_init();
 extern void rrdset_done_push(RRDSET *st);
-extern void rrdset_push_chart_definition(RRDSET *st);
+extern void rrdset_push_chart_definition_now(RRDSET *st);
 extern void *rrdpush_sender_thread(void *ptr);
 
 extern int rrdpush_receiver_thread_spawn(RRDHOST *host, struct web_client *w, char *url);
diff --git a/conf.d/stream.conf b/streaming/stream.conf
index d0c9a8b18..493eba37c 100644
--- a/conf.d/stream.conf
+++ b/streaming/stream.conf
@@ -39,17 +39,25 @@
     # If the destination line above does not specify a port, use this
     default port = 19999
 
+    # filter the charts to be streamed
+    # netdata SIMPLE PATTERN:
+    # - space separated list of patterns (use \ to include spaces in patterns)
+    # - use * as wildcard, any number of times within each pattern
+    # - prefix a pattern with ! for a negative match (ie not stream the charts it matches)
+    # - the order of patterns is important (left to right)
+    # To send all except a few, use: !this !that *   (ie append a wildcard pattern)
+    send charts matching = *
+
     # The buffer to use for sending metrics.
-    # 1MB is good for 10-20 seconds of data, so increase this
-    # if you expect latencies.
+    # 1MB is good for 10-20 seconds of data, so increase this if you expect latencies.
+    # The buffer is flushed on reconnects (this will not prevent gaps at the charts).
     buffer size bytes = 1048576
 
     # If the connection fails, or it disconnects,
     # retry after that many seconds.
     reconnect delay seconds = 5
 
-    # Attempt to sync the clock the of the master with the clock of the
-    # slave for that many iterations, when starting.
+    # Sync the clock of the charts for that many iterations, when starting.
     initial clock resync iterations = 60
 
 
@@ -62,8 +70,9 @@
 #    netdata searches for options in this order:
 #
 #    a) master netdata settings (netdata.conf)
-#    b) [API_KEY] section       (below, settings for the API key)
-#    c) [MACHINE_GUID] section  (below, settings for each machine)
+#    b) [stream] section        (above)
+#    c) [API_KEY] section       (below, settings for the API key)
+#    d) [MACHINE_GUID] section  (below, settings for each machine)
 #
 #    You can combine the above (the more specific setting will be used).
 
@@ -95,7 +104,7 @@
     # If you don't set it here, the memory mode of netdata.conf will be used.
     # Valid modes:
     #    save    save on exit, load on start
-    #    map     like swap (continuously syncing to disks)
+    #    map     like swap (continuously syncing to disks - you need SSD)
     #    ram     keep it in RAM, don't touch the disk
     #    none    no database at all (use this on headless proxies)
     default memory mode = ram
@@ -106,7 +115,7 @@
     #    no      do not enable alarms
     #    auto    enable alarms, only when the sending netdata is connected
     # You can also set it per host, below.
-    # The default is the same as to netdata.conf
+    # The default is taken from [health].enabled of netdata.conf
     health enabled by default = auto
 
     # postpone alarms for a short period after the sender is connected
@@ -120,15 +129,16 @@
     multiple connections = allow
 
     # need to route metrics differently? set these.
-    # the defaults are the ones at the [stream] section
+    # the defaults are the ones at the [stream] section (above)
     #default proxy enabled = yes | no
     #default proxy destination = IP:PORT IP:PORT ...
     #default proxy api key = API_KEY
+    #default proxy send charts matching = *
 
 
 # -----------------------------------------------------------------------------
 # 3. PER SENDING HOST SETTINGS, ON MASTER NETDATA
-#    THIS IS OPTIONAL - YOU DON'T NEED IT
+#    THIS IS OPTIONAL - YOU DON'T HAVE TO CONFIGURE IT
 
 # This section exists to give you finer control of the master settings for each
 # slave host, when the same API key is used by many netdata slaves / proxies.
@@ -174,6 +184,8 @@
     multiple connections = allow
 
     # need to route metrics differently?
+    # the defaults are the ones at the [API KEY] section
     #proxy enabled = yes | no
     #proxy destination = IP:PORT IP:PORT ...
     #proxy api key = API_KEY
+    #proxy send charts matching = *
diff --git a/system/Makefile.am b/system/Makefile.am
index 255147bad..b085dca88 100644
--- a/system/Makefile.am
+++ b/system/Makefile.am
@@ -1,20 +1,26 @@
 #
 # Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
 CLEANFILES = \
+    edit-config \
 	netdata-openrc \
 	netdata.logrotate \
 	netdata.service \
 	netdata-init-d \
 	netdata-lsb \
 	netdata-freebsd \
+	netdata.plist \
 	$(NULL)
 
 include $(top_srcdir)/build/subst.inc
-
 SUFFIXES = .in
 
+dist_config_SCRIPTS = \
+    edit-config \
+    $(NULL)
+
 nodist_noinst_DATA = \
 	netdata-openrc \
 	netdata.logrotate \
@@ -22,14 +28,17 @@ nodist_noinst_DATA = \
 	netdata-init-d \
 	netdata-lsb \
 	netdata-freebsd \
+	netdata.plist \
 	$(NULL)
 
 dist_noinst_DATA = \
+	edit-config.in \
 	netdata-openrc.in \
 	netdata.logrotate.in \
 	netdata.service.in \
 	netdata-init-d.in \
 	netdata-lsb.in \
 	netdata-freebsd.in \
+	netdata.plist.in \
 	netdata.conf \
 	$(NULL)
diff --git a/system/Makefile.in b/system/Makefile.in
index a9843de4f..3598ebde5 100644
--- a/system/Makefile.in
+++ b/system/Makefile.in
@@ -14,6 +14,7 @@
 
 @SET_MAKE@
 
+
 VPATH = @srcdir@
 am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
 am__make_running_with_option = \
@@ -79,23 +80,55 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 DIST_COMMON = $(top_srcdir)/build/subst.inc $(srcdir)/Makefile.in \
-	$(srcdir)/Makefile.am $(dist_noinst_DATA)
+	$(srcdir)/Makefile.am $(dist_config_SCRIPTS) \
+	$(dist_noinst_DATA)
 subdir = system
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
 CONFIG_HEADER = $(top_builddir)/config.h
 CONFIG_CLEAN_FILES =
 CONFIG_CLEAN_VPATH_FILES =
+am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
+am__vpath_adj = case $$p in \
+    $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
+    *) f=$$p;; \
+  esac;
+am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`;
+am__install_max = 40
+am__nobase_strip_setup = \
+  srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'`
+am__nobase_strip = \
+  for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||"
+am__nobase_list = $(am__nobase_strip_setup); \
+  for p in $$list; do echo "$$p $$p"; done | \
+  sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \
+  $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \
+    if (++n[$$2] == $(am__install_max)) \
+      { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \
+    END { for (dir in files) print dir, files[dir] }'
+am__base_list = \
+  sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
+  sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g'
+am__uninstall_files_from_dir = { \
+  test -z "$$files" \
+    || { test ! -d "$$dir" && test ! -f "$$dir" && test ! -r "$$dir"; } \
+    || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
+         $(am__cd) "$$dir" && rm -f $$files; }; \
+  }
+am__installdirs = "$(DESTDIR)$(configdir)"
+SCRIPTS = $(dist_config_SCRIPTS)
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
 am__v_P_0 = false
@@ -215,6 +248,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -236,6 +270,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
@@ -265,18 +300,25 @@ webdir = @webdir@
 
 #
 # Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 CLEANFILES = \
+    edit-config \
 	netdata-openrc \
 	netdata.logrotate \
 	netdata.service \
 	netdata-init-d \
 	netdata-lsb \
 	netdata-freebsd \
+	netdata.plist \
 	$(NULL)
 
 SUFFIXES = .in
+dist_config_SCRIPTS = \
+    edit-config \
+    $(NULL)
+
 nodist_noinst_DATA = \
 	netdata-openrc \
 	netdata.logrotate \
@@ -284,15 +326,18 @@ nodist_noinst_DATA = \
 	netdata-init-d \
 	netdata-lsb \
 	netdata-freebsd \
+	netdata.plist \
 	$(NULL)
 
 dist_noinst_DATA = \
+	edit-config.in \
 	netdata-openrc.in \
 	netdata.logrotate.in \
 	netdata.service.in \
 	netdata-init-d.in \
 	netdata-lsb.in \
 	netdata-freebsd.in \
+	netdata.plist.in \
 	netdata.conf \
 	$(NULL)
 
@@ -331,6 +376,41 @@ $(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
 $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
 $(am__aclocal_m4_deps):
+install-dist_configSCRIPTS: $(dist_config_SCRIPTS)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_config_SCRIPTS)'; test -n "$(configdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(configdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(configdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) { files[d] = files[d] " " $$1; \
+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(configdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(configdir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-dist_configSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_config_SCRIPTS)'; test -n "$(configdir)" || exit 0; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	       sed -e 's,.*/,,;$(transform)'`; \
+	dir='$(DESTDIR)$(configdir)'; $(am__uninstall_files_from_dir)
 tags TAGS:
 
 ctags CTAGS:
@@ -370,8 +450,11 @@ distdir: $(DISTFILES)
 	done
 check-am: all-am
 check: check-am
-all-am: Makefile $(DATA)
+all-am: Makefile $(SCRIPTS) $(DATA)
 installdirs:
+	for dir in "$(DESTDIR)$(configdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
 install: install-am
 install-exec: install-exec-am
 install-data: install-data-am
@@ -424,7 +507,7 @@ info: info-am
 
 info-am:
 
-install-data-am:
+install-data-am: install-dist_configSCRIPTS
 
 install-dvi: install-dvi-am
 
@@ -468,20 +551,21 @@ ps: ps-am
 
 ps-am:
 
-uninstall-am:
+uninstall-am: uninstall-dist_configSCRIPTS
 
 .MAKE: install-am install-strip
 
 .PHONY: all all-am check check-am clean clean-generic cscopelist-am \
 	ctags-am distclean distclean-generic distdir dvi dvi-am html \
 	html-am info info-am install install-am install-data \
-	install-data-am install-dvi install-dvi-am install-exec \
-	install-exec-am install-html install-html-am install-info \
-	install-info-am install-man install-pdf install-pdf-am \
-	install-ps install-ps-am install-strip installcheck \
-	installcheck-am installdirs maintainer-clean \
-	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
-	pdf-am ps ps-am tags-am uninstall uninstall-am
+	install-data-am install-dist_configSCRIPTS install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-generic pdf pdf-am ps ps-am tags-am uninstall \
+	uninstall-am uninstall-dist_configSCRIPTS
 
 .in:
 	if sed \
@@ -489,6 +573,9 @@ uninstall-am:
 		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
 		-e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
 		-e 's#[@]pythondir_POST@#$(pythondir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
 		$< > $@.tmp; then \
 		mv "$@.tmp" "$@"; \
 	else \
diff --git a/system/edit-config b/system/edit-config
new file mode 100644
index 000000000..1696f9f34
--- /dev/null
+++ b/system/edit-config
@@ -0,0 +1,96 @@
+#!/usr/bin/env sh
+
+[ -f /etc/profile ] && . /etc/profile
+
+file="${1}"
+
+EDITOR="${EDITOR-vi}"
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="/usr/local/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/local/lib/netdata/conf.d"
+
+if [ -z "${file}" ]
+then
+	cat <<USAGE
+
+USAGE:
+  ${0} FILENAME
+
+  Copy and edit the stock config file named: FILENAME
+  if FILENAME is already copied, it will be edited as-is.
+
+  The EDITOR shell variable is used to define the editor to be used.
+
+  Stock config files at: '${NETDATA_STOCK_CONFIG_DIR}'
+  User  config files at: '${NETDATA_USER_CONFIG_DIR}'
+
+  Available files in '${NETDATA_STOCK_CONFIG_DIR}' to copy and edit:
+
+USAGE
+
+	cd "${NETDATA_STOCK_CONFIG_DIR}" || exit 1
+	ls >&2 -R *.conf */*.conf
+	exit 1
+
+fi
+
+file_is_in_path() {
+	local file path real
+	file="${1}"
+	path="${2}"
+	
+	real="$(readlink -f "${file}")"
+
+	# we don't have working readlink
+	[ -z "${real}" ] && return 0
+
+	if [ ! -z "${real}" ] && [ -z "$(echo "${real}" | grep -E "^${path}.*$")" ]
+	then
+		echo >&2 "File '${file}' is physically at '${real}', which is not in '${path}'. Aborting."
+		exit 1
+	fi
+
+	return 0
+}
+
+edit() {
+	echo >&2 "Editing '${1}' ..."
+
+	# check we can edit
+	file_is_in_path "${1}" "${NETDATA_USER_CONFIG_DIR}" || exit 1
+
+	"${EDITOR}" "${1}"
+	exit $?
+}
+
+copy_and_edit() {
+	# check we can copy
+	file_is_in_path "${NETDATA_STOCK_CONFIG_DIR}/${1}" "${NETDATA_STOCK_CONFIG_DIR}" || exit 1
+
+	if [ ! -f "${NETDATA_USER_CONFIG_DIR}/${1}" ]
+	then
+		echo >&2 "Copying '${NETDATA_STOCK_CONFIG_DIR}/${1}' to '${NETDATA_USER_CONFIG_DIR}/${1}' ... "
+		cp -p "${NETDATA_STOCK_CONFIG_DIR}/${1}" "${NETDATA_USER_CONFIG_DIR}/${1}" || exit 1
+	fi
+
+	edit "${NETDATA_USER_CONFIG_DIR}/${1}"
+}
+
+# make sure it is not absolute filename
+c1="$(echo "${file}" | cut -b 1)"
+if [ "${c1}" = "/" ] || [ "${c1}" = "." ]
+then
+	echo >&2 "Please don't use filenames starting with '/' or '.'"
+	exit 1
+fi
+
+# already exists
+if [ -f "${NETDATA_USER_CONFIG_DIR}/${file}" ]
+then
+	edit "${NETDATA_USER_CONFIG_DIR}/${file}"
+fi
+
+[ -f "${NETDATA_USER_CONFIG_DIR}/${file}"  ] && edit "${NETDATA_USER_CONFIG_DIR}/${file}"
+[ -f "${NETDATA_STOCK_CONFIG_DIR}/${file}" ] && copy_and_edit "${file}"
+
+echo >&2 "File '${file}' is not found in '${NETDATA_STOCK_CONFIG_DIR}'"
+exit 1
diff --git a/system/edit-config.in b/system/edit-config.in
new file mode 100755
index 000000000..1b86549fa
--- /dev/null
+++ b/system/edit-config.in
@@ -0,0 +1,96 @@
+#!/usr/bin/env sh
+
+[ -f /etc/profile ] && . /etc/profile
+
+file="${1}"
+
+EDITOR="${EDITOR-vi}"
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="@configdir_POST@"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="@libconfigdir_POST@"
+
+if [ -z "${file}" ]
+then
+	cat <<USAGE
+
+USAGE:
+  ${0} FILENAME
+
+  Copy and edit the stock config file named: FILENAME
+  if FILENAME is already copied, it will be edited as-is.
+
+  The EDITOR shell variable is used to define the editor to be used.
+
+  Stock config files at: '${NETDATA_STOCK_CONFIG_DIR}'
+  User  config files at: '${NETDATA_USER_CONFIG_DIR}'
+
+  Available files in '${NETDATA_STOCK_CONFIG_DIR}' to copy and edit:
+
+USAGE
+
+	cd "${NETDATA_STOCK_CONFIG_DIR}" || exit 1
+	ls >&2 -R *.conf */*.conf
+	exit 1
+
+fi
+
+file_is_in_path() {
+	local file path real
+	file="${1}"
+	path="${2}"
+	
+	real="$(readlink -f "${file}")"
+
+	# we don't have working readlink
+	[ -z "${real}" ] && return 0
+
+	if [ ! -z "${real}" ] && [ -z "$(echo "${real}" | grep -E "^${path}.*$")" ]
+	then
+		echo >&2 "File '${file}' is physically at '${real}', which is not in '${path}'. Aborting."
+		exit 1
+	fi
+
+	return 0
+}
+
+edit() {
+	echo >&2 "Editing '${1}' ..."
+
+	# check we can edit
+	file_is_in_path "${1}" "${NETDATA_USER_CONFIG_DIR}" || exit 1
+
+	"${EDITOR}" "${1}"
+	exit $?
+}
+
+copy_and_edit() {
+	# check we can copy
+	file_is_in_path "${NETDATA_STOCK_CONFIG_DIR}/${1}" "${NETDATA_STOCK_CONFIG_DIR}" || exit 1
+
+	if [ ! -f "${NETDATA_USER_CONFIG_DIR}/${1}" ]
+	then
+		echo >&2 "Copying '${NETDATA_STOCK_CONFIG_DIR}/${1}' to '${NETDATA_USER_CONFIG_DIR}/${1}' ... "
+		cp -p "${NETDATA_STOCK_CONFIG_DIR}/${1}" "${NETDATA_USER_CONFIG_DIR}/${1}" || exit 1
+	fi
+
+	edit "${NETDATA_USER_CONFIG_DIR}/${1}"
+}
+
+# make sure it is not absolute filename
+c1="$(echo "${file}" | cut -b 1)"
+if [ "${c1}" = "/" ] || [ "${c1}" = "." ]
+then
+	echo >&2 "Please don't use filenames starting with '/' or '.'"
+	exit 1
+fi
+
+# already exists
+if [ -f "${NETDATA_USER_CONFIG_DIR}/${file}" ]
+then
+	edit "${NETDATA_USER_CONFIG_DIR}/${file}"
+fi
+
+[ -f "${NETDATA_USER_CONFIG_DIR}/${file}"  ] && edit "${NETDATA_USER_CONFIG_DIR}/${file}"
+[ -f "${NETDATA_STOCK_CONFIG_DIR}/${file}" ] && copy_and_edit "${file}"
+
+echo >&2 "File '${file}' is not found in '${NETDATA_STOCK_CONFIG_DIR}'"
+exit 1
diff --git a/system/netdata-freebsd.in b/system/netdata-freebsd.in
index fac2e82c2..300ddc9ec 100644
--- a/system/netdata-freebsd.in
+++ b/system/netdata-freebsd.in
@@ -1,11 +1,13 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 . /etc/rc.subr
 
 name=netdata
 rcvar=netdata_enable
 
-pidfile="@localstatedir_POST@/run/netdata.pid"
+piddir="@localstatedir_POST@/run/netdata"
+pidfile="${pidfile}/netdata.pid"
 
 command="@sbindir_POST@/netdata"
 command_args="-P ${pidfile}"
@@ -22,11 +24,13 @@ savedb_cmd="netdata_savedb"
 
 netdata_prestart()
 {
+	[ ! -d "${piddir}" ] && mkdir -p "${piddir}"
 	return 0
 }
 
 netdata_poststop()
 {
+	[ -f "${pidfile}" ] && rm "${pidfile}"
 	return 0
 }
 
diff --git a/system/netdata-init-d.in b/system/netdata-init-d.in
index 90a4b95be..9ac510196 100644
--- a/system/netdata-init-d.in
+++ b/system/netdata-init-d.in
@@ -1,4 +1,5 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 # netdata	Real-time performance monitoring, done right
 # chkconfig: 345 99 01
@@ -13,7 +14,8 @@
 
 DAEMON="netdata"
 DAEMON_PATH=@sbindir_POST@
-PIDFILE=@localstatedir_POST@/run/$DAEMON.pid
+PIDFILE_PATH=@localstatedir_POST@/run/netdata
+PIDFILE=$PIDFILE_PATH/$DAEMON.pid
 DAEMONOPTS="-P $PIDFILE"
 STOP_TIMEOUT="60"
 
@@ -24,6 +26,7 @@ LOCKFILE=/var/lock/subsys/$DAEMON
 service_start()
 {
 	[ -x $DAEMON_PATH ] || exit 5
+	[ ! -d $PIDFILE_PATH ] && mkdir -p $PIDFILE_PATH
 	echo -n "Starting $DAEMON..."
 	daemon $DAEMON_PATH/$DAEMON $DAEMONOPTS
 	RETVAL=$?
diff --git a/system/netdata-lsb.in b/system/netdata-lsb.in
index 3bbde1a49..e623f1e0c 100644
--- a/system/netdata-lsb.in
+++ b/system/netdata-lsb.in
@@ -1,4 +1,5 @@
 #!/bin/bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 ### BEGIN INIT INFO
 # Provides:          netdata
@@ -19,7 +20,8 @@ ${DEBIAN_SCRIPT_DEBUG:+ set -v -x}
 
 DAEMON="netdata"
 DAEMON_PATH=@sbindir_POST@
-PIDFILE=@localstatedir_POST@/run/$DAEMON.pid
+PIDFILE_PATH=@localstatedir_POST@/run/netdata
+PIDFILE=$PIDFILE_PATH/$DAEMON.pid
 DAEMONOPTS="-P $PIDFILE"
 
 test -x $DAEMON_PATH/$DAEMON || exit 0
@@ -31,6 +33,10 @@ cd /
 umask 022
 
 service_start() {
+	if [ ! -d $PIDFILE_PATH ]; then
+		mkdir -p $PIDFILE_PATH
+	fi
+	
 	log_daemon_msg "Starting real-time performance monitoring" "netdata"
 	start_daemon -p $PIDFILE $DAEMON_PATH/$DAEMON $DAEMONOPTS
 	RETVAL=$?
diff --git a/system/netdata-openrc.in b/system/netdata-openrc.in
index ce76f7e64..e0070526f 100644
--- a/system/netdata-openrc.in
+++ b/system/netdata-openrc.in
@@ -1,84 +1,58 @@
 #!/sbin/openrc-run
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # The user netdata is configured to run as.
 # If you edit its configuration file to set a different
 # user, set it here too, to have its files switch ownership
-: ${NETDATA_OWNER:=netdata:netdata}
-
-# The URL to download netdata config.
-: ${NETDATA_CONFIG_URL:=http://localhost:19999/netdata.conf}
+: "${NETDATA_OWNER:=netdata:netdata}"
 
 # The timeout in seconds to wait for netdata
 # to save its database on disk and exit.
-: ${NETDATA_WAIT_EXIT_TIMEOUT:=60}
+: "${NETDATA_WAIT_EXIT_TIMEOUT:=60}"
 
 # When set to 1, if netdata does not exit in
 # NETDATA_WAIT_EXIT_TIMEOUT, we will force it
 # to exit.
-: ${NETDATA_FORCE_EXIT:=0}
+: "${NETDATA_FORCE_EXIT:=0}"
 
 # Netdata will use these services, only if they
 # are enabled to start.
-: ${NETDATA_START_AFTER_SERVICES:=apache2 squid nginx mysql named opensips upsd hostapd postfix lm_sensors}
+: "${NETDATA_START_AFTER_SERVICES:=apache2 squid nginx mysql named opensips upsd hostapd postfix lm_sensors}"
 
-extra_started_commands="getconf"
-pidfile="/run/netdata.pid"
+extra_started_commands="reload rotate save"
+pidfile="@localstatedir_POST@/run/netdata/netdata.pid"
 command="@sbindir_POST@/netdata"
-command_background="yes"
 command_args="-P ${pidfile} ${NETDATA_EXTRA_ARGS}"
-# start_stop_daemon_args="-u ${NETDATA_OWNER}"
-start_stop_daemon_args=""
+start_stop_daemon_args="-u ${NETDATA_OWNER}"
+required_files="/etc/netdata/netdata.conf"
+if [ "${NETDATA_FORCE_EXIT}" -eq 1 ]; then
+    retry="TERM/${NETDATA_WAIT_EXIT_TIMEOUT}/KILL/1"
+else
+    retry="TERM/${NETDATA_WAIT_EXIT_TIMEOUT}"
+fi
 
 depend() {
-	use logger
-	need net
-	after ${NETDATA_START_AFTER_SERVICES}
+    use logger
+    need net
+    after ${NETDATA_START_AFTER_SERVICES}
 
-	checkpath -o ${NETDATA_OWNER} -d @localstatedir_POST@/cache/netdata /run/netdata
+    checkpath -o ${NETDATA_OWNER} -d @localstatedir_POST@/cache/netdata @localstatedir_POST@/run/netdata
 }
 
-start_post() {
-	if [ ! -f @sysconfdir_POST@/netdata/netdata.conf ]; then
-		ebegin "Downloading default configuration to @sysconfdir_POST@/netdata/netdata.conf"
-		sleep 2
-		curl -s -o @sysconfdir_POST@/netdata/netdata.conf.new "${NETDATA_CONFIG_URL}"
-		ret=$?
-		if [ $ret -eq 0 && -s @sysconfdir_POST@/netdata/netdata.conf.new ]; then
-			mv @sysconfdir_POST@/netdata/netdata.conf.new @sysconfdir_POST@/netdata/netdata.conf
-		else
-			ret=1
-			rm @sysconfdir_POST@/netdata/netdata.conf.new 2>/dev/null
-		fi
-		eend $ret
-	fi
+reload() {
+    ebegin "Reloading Netdata"
+    start-stop-daemon --signal SIGUSR2 --pidfile "${pidfile}"
+    eend $? "Failed to reload Netdata"
 }
 
-stop_post() {
-	local result ret=0 count=0 sigkill=0
-
-	ebegin "Waiting for netdata to save its database"
-	while [ -f "${pidfile}" ]; do
-		if [ $count -gt ${NETDATA_WAIT_EXIT_TIMEOUT} ]; then
-			sigkill=1
-			break
-		fi
-
-		count=$((count + 1))
-		kill -0 $(cat ${pidfile}) 2>/dev/null
-		ret=$?
-		test $ret -eq 0 && sleep 1
-	done
-	eend $sigkill
-
-	if [ $sigkill -eq 1 -a -f "${pidfile}" ]; then
-		ebegin "Netdata is taking too long to exit, forcing it to quit"
-		kill -SIGKILL $(cat ${pidfile}) 2>/dev/null
-		eend $?
-	fi
+rotate() {
+    ebegin "Logrotating Netdata"
+    start-stop-daemon --signal SIGHUP --pidfile "${pidfile}"
+    eend $? "Failed to logrotate Netdata"
 }
 
-getconf() {
-	ebegin "Downloading configuration from netdata to /tmp/netdata.conf"
-	curl -o /tmp/netdata.conf "${NETDATA_CONFIG_URL}"
-	eend $?
+save() {
+    ebegin "Saving Netdata database"
+    start-stop-daemon --signal SIGUSR1 --pidfile "${pidfile}"
+    eend $? "Failed to save Netdata database"
 }
diff --git a/system/netdata.logrotate.in b/system/netdata.logrotate.in
index ae1ac50a7..a766b6cce 100644
--- a/system/netdata.logrotate.in
+++ b/system/netdata.logrotate.in
@@ -7,6 +7,6 @@
 	notifempty
 	sharedscripts
 	postrotate
-		/bin/kill -HUP `pidof netdata 2>/dev/null` 2>/dev/null || true
+		/bin/kill -HUP `cat @localstatedir_POST@/run/netdata/netdata.pid 2>/dev/null` 2>/dev/null || true
 	endscript
 }
diff --git a/system/netdata.plist.in b/system/netdata.plist.in
new file mode 100644
index 000000000..a969b3177
--- /dev/null
+++ b/system/netdata.plist.in
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
+<plist version="1.0">
+<dict>
+    <key>Label</key>
+    <string>com.github.netdata</string>
+    <key>ProgramArguments</key>
+    <array>
+        <string>@sbindir_POST@/netdata</string>
+    </array>
+    <key>RunAtLoad</key>
+    <true/>
+</dict>
+</plist>
diff --git a/system/netdata.service.in b/system/netdata.service.in
index 58cdff225..dd0ee3cca 100644
--- a/system/netdata.service.in
+++ b/system/netdata.service.in
@@ -1,5 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 [Unit]
 Description=Real time performance monitoring
+
+# append here other services you want netdata to wait for them to start
 After=network.target httpd.service squid.service nfs-server.service mysqld.service mysql.service named.service postfix.service chronyd.service
 
 [Service]
@@ -8,9 +11,13 @@ User=netdata
 Group=netdata
 RuntimeDirectory=netdata
 RuntimeDirectoryMode=0775
-ExecStart=@sbindir_POST@/netdata -P /run/netdata/netdata.pid -D
+PIDFile=@localstatedir_POST@/run/netdata/netdata.pid
+ExecStart=@sbindir_POST@/netdata -P @localstatedir_POST@/run/netdata/netdata.pid -D -W set global 'process scheduling policy' 'keep' -W set global 'OOM score' 'keep'
 ExecStartPre=/bin/mkdir -p @localstatedir_POST@/cache/netdata
 ExecStartPre=/bin/chown -R netdata:netdata @localstatedir_POST@/cache/netdata
+ExecStartPre=/bin/mkdir -p @localstatedir_POST@/run/netdata
+ExecStartPre=/bin/chown -R netdata:netdata @localstatedir_POST@/run/netdata
+#ExecStopPost=/bin/rm @localstatedir_POST@/run/netdata/netdata.pid
 PermissionsStartOnly=true
 
 # saving a big db on slow disks may need some time
@@ -24,20 +31,17 @@ RestartSec=30
 # netdata (via [global].OOM score in netdata.conf) can only increase the value set here.
 # To decrease it, set the minimum here and set the same or a higher value in netdata.conf.
 # Valid values: -1000 (never kill netdata) to 1000 (always kill netdata).
-#OOMScoreAdjust=0
+OOMScoreAdjust=1000
 
-# By default netdata switches to scheduling policy idle, which makes it use CPU, only
-# when there is spare available.
 # Valid policies: other (the system default) | batch | idle | fifo | rr
-#CPUSchedulingPolicy=other
+# To give netdata the max priority, set CPUSchedulingPolicy=rr and CPUSchedulingPriority=99
+CPUSchedulingPolicy=idle
 
-# This sets the maximum scheduling priority netdata can set (for policies: rr and fifo).
-# netdata (via [global].process scheduling priority in netdata.conf) can only lower this value.
+# This sets the scheduling priority (for policies: rr and fifo).
 # Priority gets values 1 (lowest) to 99 (highest).
 #CPUSchedulingPriority=1
 
-# For scheduling policy 'other' and 'batch', this sets the lowest niceness of netdata.
-# netdata (via [global].process nice level in netdata.conf) can only increase the value set here.
+# For scheduling policy 'other' and 'batch', this sets the lowest niceness of netdata (-20 highest to 19 lowest).
 #Nice=0
 
 [Install]
diff --git a/tests/Makefile.am b/tests/Makefile.am
index fe07653f1..722266d77 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,4 +1,6 @@
-MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 
 dist_noinst_DATA = \
     README.md \
diff --git a/tests/Makefile.in b/tests/Makefile.in
index ff5bd2f28..c9109dbdd 100644
--- a/tests/Makefile.in
+++ b/tests/Makefile.in
@@ -14,6 +14,8 @@
 
 @SET_MAKE@
 
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 
 VPATH = @srcdir@
 am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
@@ -83,14 +85,16 @@ subdir = tests
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(dist_noinst_SCRIPTS) $(dist_noinst_DATA)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -217,6 +221,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -238,6 +243,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
diff --git a/tests/node.d/fronius.chart.spec.js b/tests/node.d/fronius.chart.spec.js
index 2d2b57cde..92e88d2ee 100644
--- a/tests/node.d/fronius.chart.spec.js
+++ b/tests/node.d/fronius.chart.spec.js
@@ -1,4 +1,5 @@
 "use strict";
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 var netdata = require("../../node.d/node_modules/netdata");
 // remember: subject will be a singleton!
@@ -158,4 +159,4 @@ describe("fronius chart creation", function () {
 
         expect(first).toBe(second);
     });
-});
\ No newline at end of file
+});
diff --git a/tests/node.d/fronius.parse.spec.js b/tests/node.d/fronius.parse.spec.js
index 0dbfa030d..e6f308fe3 100644
--- a/tests/node.d/fronius.parse.spec.js
+++ b/tests/node.d/fronius.parse.spec.js
@@ -1,4 +1,5 @@
 "use strict";
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 var netdata = require("../../node.d/node_modules/netdata");
 // remember: subject will be a singleton!
@@ -329,4 +330,4 @@ describe("fronius parsing for inverters", function () {
        expect(result.value).toBe(1000);
     });
 
-});
\ No newline at end of file
+});
diff --git a/tests/node.d/fronius.process.spec.js b/tests/node.d/fronius.process.spec.js
index daa84f390..141fa8a6a 100644
--- a/tests/node.d/fronius.process.spec.js
+++ b/tests/node.d/fronius.process.spec.js
@@ -1,4 +1,5 @@
 "use strict";
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 var netdata = require("../../node.d/node_modules/netdata");
 // remember: subject will be a singleton!
@@ -71,4 +72,4 @@ describe("fronius main processing", function () {
     });
 
 
-});
\ No newline at end of file
+});
diff --git a/tests/node.d/fronius.validation.spec.js b/tests/node.d/fronius.validation.spec.js
index 08b7e430f..b7938d52f 100644
--- a/tests/node.d/fronius.validation.spec.js
+++ b/tests/node.d/fronius.validation.spec.js
@@ -1,4 +1,5 @@
 "use strict";
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 var netdata = require("../../node.d/node_modules/netdata");
 // remember: subject will be a singleton!
@@ -151,4 +152,4 @@ describe("fronius configuration validation", function () {
         expect(subject.serviceExecute).toHaveBeenCalledWith(name2, "solar2.local/", 3);
     });
 
-});
\ No newline at end of file
+});
diff --git a/tests/stress.sh b/tests/stress.sh
index d09d69895..9c9393d3b 100755
--- a/tests/stress.sh
+++ b/tests/stress.sh
@@ -1,17 +1,19 @@
 #!/bin/bash
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 # set the host to connect to
 if [ ! -z "$1" ]
-	then
+then
 	host="$1"
 else
 	host="http://127.0.0.1:19999"
 fi
 echo "using netdata server at: $host"
 
+# shellcheck disable=SC2207 disable=SC1117
 charts=($(curl "$host/netdata.conf" 2>/dev/null | grep "^\[" | cut -d '[' -f 2 | cut -d ']' -f 1 | grep -v ^global$ | grep -v "^plugin" | sort -u))
 if [ "${#charts[@]}" -eq 0 ]
-	then
+then
 	echo "Cannot download charts from server: $host"
 	exit 1
 fi
@@ -26,7 +28,7 @@ entries="$(curl "$host/netdata.conf" 2>/dev/null | grep "history = " | head -n 1
 [ $entries -gt 3600 ] && entries=3600
 
 if [ $entries -ne 3600 ]
-	then
+then
 	echo >&2 "You are running a test for a history of $entries entries."
 fi
 
@@ -41,19 +43,20 @@ duration=$((now - first))
 file="$(mktemp /tmp/netdata-stress-XXXXXXXX)"
 cleanup() {
 	echo "cleanup"
-	[ -f $file ] && rm $file
+	[ -f "$file" ] && rm "$file"
 }
 trap cleanup EXIT
 
-while [ 1 = 1 ]
+while true
 do
-	echo "curl --compressed --keepalive-time 120 --header \"Connection: keep-alive\" \\" >$file
+	echo "curl --compressed --keepalive-time 120 --header \"Connection: keep-alive\" \\" >"$file"
+	# shellcheck disable=SC2034
 	for x in {1..100}
 	do
 		dt=$((RANDOM * duration / 32767))
 		st=$((RANDOM * duration / 32767))
 		et=$(( st + dt ))
-		[ $et -gt $now ] && st=$(( now - dt ))
+		[ $et -gt "$now" ] && st=$(( now - dt ))
 
 		points=$((RANDOM * 2000 / 32767 + 2))
 		st=$((first + st))
@@ -69,6 +72,6 @@ do
 		format="${formats[$format]}"
 
 		echo "--url \"$host/api/v1/data?chart=$chart&mode=$mode&format=$format&options=$options&after=$st&before=$et&points=$points\" \\"
-	done >>$file
-	bash $file >/dev/null
+	done >>"$file"
+	bash "$file" >/dev/null
 done
diff --git a/tests/web/easypiechart.chart.spec.js b/tests/web/easypiechart.chart.spec.js
index 8f5e49631..23bf33d69 100644
--- a/tests/web/easypiechart.chart.spec.js
+++ b/tests/web/easypiechart.chart.spec.js
@@ -36,4 +36,4 @@ describe("creation of easy pie charts", function () {
         };
     }
 
-});
\ No newline at end of file
+});
diff --git a/tests/web/easypiechart.percentage.spec.js b/tests/web/easypiechart.percentage.spec.js
index e6168bdd7..976b33964 100644
--- a/tests/web/easypiechart.percentage.spec.js
+++ b/tests/web/easypiechart.percentage.spec.js
@@ -139,4 +139,4 @@ function createState(min, max) {
             easyPieChartMax: max
         }
     };
-}
\ No newline at end of file
+}
diff --git a/web/Makefile.am b/web/Makefile.am
index ac9228744..1ec8d586d 100644
--- a/web/Makefile.am
+++ b/web/Makefile.am
@@ -1,128 +1,14 @@
-#
-# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
-#
-MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
+# SPDX-License-Identifier: GPL-3.0-or-later
 
-dist_web_DATA = \
-	demo.html \
-	demo2.html \
-	demosites.html \
-	demosites2.html \
-	dashboard.html \
-	dashboard.js \
-	dashboard_info.js \
-	dashboard_info_custom_example.js \
-	dashboard.css \
-	dashboard.slate.css \
-	favicon.ico \
-	goto-host-from-alarm.html \
-	index.html \
-	infographic.html \
-	netdata-swagger.yaml \
-	netdata-swagger.json \
-	robots.txt \
-	refresh-badges.js \
-	registry.html \
-	sitemap.xml \
-	tv.html \
-	version.txt \
-	$(NULL)
-
-webolddir=$(webdir)/old
-dist_webold_DATA = \
-	old/datasource.html \
-	old/index.html \
-	old/index.js \
-	old/netdata.js \
-	old/theme.css \
-	$(NULL)
-
-weblibdir=$(webdir)/lib
-dist_weblib_DATA = \
-	lib/bootstrap-3.3.7.min.js \
-	lib/bootstrap-slider-10.0.0.min.js \
-	lib/bootstrap-table-1.11.0.min.js \
-	lib/bootstrap-table-export-1.11.0.min.js \
-	lib/bootstrap-toggle-2.2.2.min.js \
-	lib/clipboard-polyfill-be05dad.js \
-	lib/c3-0.4.18.min.js \
-	lib/d3-4.12.2.min.js \
-	lib/d3pie-0.2.1-netdata-3.js \
-	lib/dygraph-c91c859.min.js \
-	lib/dygraph-smooth-plotter-c91c859.js \
-	lib/fontawesome-all-5.0.1.min.js \
-	lib/gauge-1.3.2.min.js \
-	lib/jquery-2.2.4.min.js \
-	lib/jquery.easypiechart-97b5824.min.js \
-	lib/jquery.peity-3.2.0.min.js \
-	lib/jquery.sparkline-2.1.2.min.js \
-	lib/lz-string-1.4.4.min.js \
-	lib/morris-0.5.1.min.js \
-	lib/pako-1.0.6.min.js \
-	lib/perfect-scrollbar-0.6.15.min.js \
-	lib/raphael-2.2.4-min.js \
-	lib/tableExport-1.6.0.min.js \
-	$(NULL)
-
-webcssdir=$(webdir)/css
-dist_webcss_DATA = \
-	css/morris-0.5.1.css \
-	css/bootstrap-3.3.7.css \
-	css/bootstrap-theme-3.3.7.min.css \
-	css/bootstrap-slate-flat-3.3.7.css \
-	css/bootstrap-slider-10.0.0.min.css \
-	css/bootstrap-toggle-2.2.2.min.css \
-	css/c3-0.4.18.min.css \
-	$(NULL)
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 
-webfontsdir=$(webdir)/fonts
-dist_webfonts_DATA = \
-	fonts/glyphicons-halflings-regular.eot \
-	fonts/glyphicons-halflings-regular.svg \
-	fonts/glyphicons-halflings-regular.ttf \
-	fonts/glyphicons-halflings-regular.woff \
-	fonts/glyphicons-halflings-regular.woff2 \
-	$(NULL)
+SUBDIRS = \
+    api \
+    gui \
+    server \
+    $(NULL)
 
-webimagesdir=$(webdir)/images
-dist_webimages_DATA = \
-	images/alert-128-orange.png \
-	images/alert-128-red.png \
-	images/alert-multi-size-orange.ico \
-	images/alert-multi-size-red.ico \
-	images/animated.gif \
-	images/check-mark-2-128-green.png \
-	images/check-mark-2-multi-size-green.ico \
-	images/post.png \
-	images/seo-performance-16.png \
-	images/seo-performance-24.png \
-	images/seo-performance-32.png \
-	images/seo-performance-48.png \
-	images/seo-performance-64.png \
-	images/seo-performance-72.png \
-	images/seo-performance-114.png \
-	images/seo-performance-128.png \
-	images/seo-performance-256.png \
-	images/seo-performance-512.png \
-	images/seo-performance-multi-size.ico \
-	images/seo-performance-multi-size.icns \
+dist_noinst_DATA = \
+	README.md \
 	$(NULL)
-
-
-webwellknowndir=$(webdir)/.well-known
-dist_webwellknown_DATA = \
-	$(NULL)
-
-webdntdir=$(webdir)/.well-known/dnt
-dist_webdnt_DATA = \
-	.well-known/dnt/cookies \
-	$(NULL)
-
-version.txt:
-	if test -d "$(top_srcdir)/.git"; then \
-		git --git-dir="$(top_srcdir)/.git" log -n 1 --format=%H; \
-	fi > $@.tmp
-	test -s $@.tmp || echo 0 > $@.tmp
-	mv $@.tmp $@
-
-.PHONY: version.txt
diff --git a/web/Makefile.in b/web/Makefile.in
index 78900cc7f..d598811bc 100644
--- a/web/Makefile.in
+++ b/web/Makefile.in
@@ -14,6 +14,8 @@
 
 @SET_MAKE@
 
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 VPATH = @srcdir@
 am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
 am__make_running_with_option = \
@@ -80,19 +82,18 @@ build_triplet = @build@
 host_triplet = @host@
 subdir = web
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
-	$(dist_web_DATA) $(dist_webcss_DATA) $(dist_webdnt_DATA) \
-	$(dist_webfonts_DATA) $(dist_webimages_DATA) \
-	$(dist_weblib_DATA) $(dist_webold_DATA) \
-	$(dist_webwellknown_DATA)
+	$(dist_noinst_DATA)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -113,48 +114,74 @@ am__v_at_0 = @
 am__v_at_1 = 
 SOURCES =
 DIST_SOURCES =
+RECURSIVE_TARGETS = all-recursive check-recursive cscopelist-recursive \
+	ctags-recursive dvi-recursive html-recursive info-recursive \
+	install-data-recursive install-dvi-recursive \
+	install-exec-recursive install-html-recursive \
+	install-info-recursive install-pdf-recursive \
+	install-ps-recursive install-recursive installcheck-recursive \
+	installdirs-recursive pdf-recursive ps-recursive \
+	tags-recursive uninstall-recursive
 am__can_run_installinfo = \
   case $$AM_UPDATE_INFO_DIR in \
     n|no|NO) false;; \
     *) (install-info --version) >/dev/null 2>&1;; \
   esac
-am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
-am__vpath_adj = case $$p in \
-    $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
-    *) f=$$p;; \
-  esac;
-am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`;
-am__install_max = 40
-am__nobase_strip_setup = \
-  srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'`
-am__nobase_strip = \
-  for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||"
-am__nobase_list = $(am__nobase_strip_setup); \
-  for p in $$list; do echo "$$p $$p"; done | \
-  sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \
-  $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \
-    if (++n[$$2] == $(am__install_max)) \
-      { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \
-    END { for (dir in files) print dir, files[dir] }'
-am__base_list = \
-  sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
-  sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g'
-am__uninstall_files_from_dir = { \
-  test -z "$$files" \
-    || { test ! -d "$$dir" && test ! -f "$$dir" && test ! -r "$$dir"; } \
-    || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
-         $(am__cd) "$$dir" && rm -f $$files; }; \
-  }
-am__installdirs = "$(DESTDIR)$(webdir)" "$(DESTDIR)$(webcssdir)" \
-	"$(DESTDIR)$(webdntdir)" "$(DESTDIR)$(webfontsdir)" \
-	"$(DESTDIR)$(webimagesdir)" "$(DESTDIR)$(weblibdir)" \
-	"$(DESTDIR)$(webolddir)" "$(DESTDIR)$(webwellknowndir)"
-DATA = $(dist_web_DATA) $(dist_webcss_DATA) $(dist_webdnt_DATA) \
-	$(dist_webfonts_DATA) $(dist_webimages_DATA) \
-	$(dist_weblib_DATA) $(dist_webold_DATA) \
-	$(dist_webwellknown_DATA)
+DATA = $(dist_noinst_DATA)
+RECURSIVE_CLEAN_TARGETS = mostlyclean-recursive clean-recursive	\
+  distclean-recursive maintainer-clean-recursive
+am__recursive_targets = \
+  $(RECURSIVE_TARGETS) \
+  $(RECURSIVE_CLEAN_TARGETS) \
+  $(am__extra_recursive_targets)
+AM_RECURSIVE_TARGETS = $(am__recursive_targets:-recursive=) TAGS CTAGS \
+	distdir
 am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
+# Read a list of newline-separated strings from the standard input,
+# and print each of them once, without duplicates.  Input order is
+# *not* preserved.
+am__uniquify_input = $(AWK) '\
+  BEGIN { nonempty = 0; } \
+  { items[$$0] = 1; nonempty = 1; } \
+  END { if (nonempty) { for (i in items) print i; }; } \
+'
+# Make sure the list of sources is unique.  This is necessary because,
+# e.g., the same source file might be shared among _SOURCES variables
+# for different programs/libraries.
+am__define_uniq_tagged_files = \
+  list='$(am__tagged_files)'; \
+  unique=`for i in $$list; do \
+    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+  done | $(am__uniquify_input)`
+ETAGS = etags
+CTAGS = ctags
+DIST_SUBDIRS = $(SUBDIRS)
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+am__relativize = \
+  dir0=`pwd`; \
+  sed_first='s,^\([^/]*\)/.*$$,\1,'; \
+  sed_rest='s,^[^/]*/*,,'; \
+  sed_last='s,^.*/\([^/]*\)$$,\1,'; \
+  sed_butlast='s,/*[^/]*$$,,'; \
+  while test -n "$$dir1"; do \
+    first=`echo "$$dir1" | sed -e "$$sed_first"`; \
+    if test "$$first" != "."; then \
+      if test "$$first" = ".."; then \
+        dir2=`echo "$$dir0" | sed -e "$$sed_last"`/"$$dir2"; \
+        dir0=`echo "$$dir0" | sed -e "$$sed_butlast"`; \
+      else \
+        first2=`echo "$$dir2" | sed -e "$$sed_first"`; \
+        if test "$$first2" = "$$first"; then \
+          dir2=`echo "$$dir2" | sed -e "$$sed_rest"`; \
+        else \
+          dir2="../$$dir2"; \
+        fi; \
+        dir0="$$dir0"/"$$first"; \
+      fi; \
+    fi; \
+    dir1=`echo "$$dir1" | sed -e "$$sed_rest"`; \
+  done; \
+  reldir="$$dir2"
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
 AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
@@ -252,6 +279,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -273,6 +301,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
@@ -299,126 +328,19 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 varlibdir = @varlibdir@
 webdir = @webdir@
-
-#
-# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
-#
+AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
-dist_web_DATA = \
-	demo.html \
-	demo2.html \
-	demosites.html \
-	demosites2.html \
-	dashboard.html \
-	dashboard.js \
-	dashboard_info.js \
-	dashboard_info_custom_example.js \
-	dashboard.css \
-	dashboard.slate.css \
-	favicon.ico \
-	goto-host-from-alarm.html \
-	index.html \
-	infographic.html \
-	netdata-swagger.yaml \
-	netdata-swagger.json \
-	robots.txt \
-	refresh-badges.js \
-	registry.html \
-	sitemap.xml \
-	tv.html \
-	version.txt \
-	$(NULL)
-
-webolddir = $(webdir)/old
-dist_webold_DATA = \
-	old/datasource.html \
-	old/index.html \
-	old/index.js \
-	old/netdata.js \
-	old/theme.css \
-	$(NULL)
-
-weblibdir = $(webdir)/lib
-dist_weblib_DATA = \
-	lib/bootstrap-3.3.7.min.js \
-	lib/bootstrap-slider-10.0.0.min.js \
-	lib/bootstrap-table-1.11.0.min.js \
-	lib/bootstrap-table-export-1.11.0.min.js \
-	lib/bootstrap-toggle-2.2.2.min.js \
-	lib/clipboard-polyfill-be05dad.js \
-	lib/c3-0.4.18.min.js \
-	lib/d3-4.12.2.min.js \
-	lib/d3pie-0.2.1-netdata-3.js \
-	lib/dygraph-c91c859.min.js \
-	lib/dygraph-smooth-plotter-c91c859.js \
-	lib/fontawesome-all-5.0.1.min.js \
-	lib/gauge-1.3.2.min.js \
-	lib/jquery-2.2.4.min.js \
-	lib/jquery.easypiechart-97b5824.min.js \
-	lib/jquery.peity-3.2.0.min.js \
-	lib/jquery.sparkline-2.1.2.min.js \
-	lib/lz-string-1.4.4.min.js \
-	lib/morris-0.5.1.min.js \
-	lib/pako-1.0.6.min.js \
-	lib/perfect-scrollbar-0.6.15.min.js \
-	lib/raphael-2.2.4-min.js \
-	lib/tableExport-1.6.0.min.js \
-	$(NULL)
-
-webcssdir = $(webdir)/css
-dist_webcss_DATA = \
-	css/morris-0.5.1.css \
-	css/bootstrap-3.3.7.css \
-	css/bootstrap-theme-3.3.7.min.css \
-	css/bootstrap-slate-flat-3.3.7.css \
-	css/bootstrap-slider-10.0.0.min.css \
-	css/bootstrap-toggle-2.2.2.min.css \
-	css/c3-0.4.18.min.css \
-	$(NULL)
-
-webfontsdir = $(webdir)/fonts
-dist_webfonts_DATA = \
-	fonts/glyphicons-halflings-regular.eot \
-	fonts/glyphicons-halflings-regular.svg \
-	fonts/glyphicons-halflings-regular.ttf \
-	fonts/glyphicons-halflings-regular.woff \
-	fonts/glyphicons-halflings-regular.woff2 \
-	$(NULL)
-
-webimagesdir = $(webdir)/images
-dist_webimages_DATA = \
-	images/alert-128-orange.png \
-	images/alert-128-red.png \
-	images/alert-multi-size-orange.ico \
-	images/alert-multi-size-red.ico \
-	images/animated.gif \
-	images/check-mark-2-128-green.png \
-	images/check-mark-2-multi-size-green.ico \
-	images/post.png \
-	images/seo-performance-16.png \
-	images/seo-performance-24.png \
-	images/seo-performance-32.png \
-	images/seo-performance-48.png \
-	images/seo-performance-64.png \
-	images/seo-performance-72.png \
-	images/seo-performance-114.png \
-	images/seo-performance-128.png \
-	images/seo-performance-256.png \
-	images/seo-performance-512.png \
-	images/seo-performance-multi-size.ico \
-	images/seo-performance-multi-size.icns \
-	$(NULL)
-
-webwellknowndir = $(webdir)/.well-known
-dist_webwellknown_DATA = \
+SUBDIRS = \
+    api \
+    gui \
+    server \
+    $(NULL)
+
+dist_noinst_DATA = \
+	README.md \
 	$(NULL)
 
-webdntdir = $(webdir)/.well-known/dnt
-dist_webdnt_DATA = \
-	.well-known/dnt/cookies \
-	$(NULL)
-
-all: all-am
+all: all-recursive
 
 .SUFFIXES:
 $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
@@ -451,180 +373,105 @@ $(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
 $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
 $(am__aclocal_m4_deps):
-install-dist_webDATA: $(dist_web_DATA)
-	@$(NORMAL_INSTALL)
-	@list='$(dist_web_DATA)'; test -n "$(webdir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(webdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(webdir)" || exit 1; \
-	fi; \
-	for p in $$list; do \
-	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
-	  echo "$$d$$p"; \
-	done | $(am__base_list) | \
-	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webdir)" || exit $$?; \
-	done
-
-uninstall-dist_webDATA:
-	@$(NORMAL_UNINSTALL)
-	@list='$(dist_web_DATA)'; test -n "$(webdir)" || list=; \
-	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(webdir)'; $(am__uninstall_files_from_dir)
-install-dist_webcssDATA: $(dist_webcss_DATA)
-	@$(NORMAL_INSTALL)
-	@list='$(dist_webcss_DATA)'; test -n "$(webcssdir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(webcssdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(webcssdir)" || exit 1; \
-	fi; \
-	for p in $$list; do \
-	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
-	  echo "$$d$$p"; \
-	done | $(am__base_list) | \
-	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webcssdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webcssdir)" || exit $$?; \
-	done
-
-uninstall-dist_webcssDATA:
-	@$(NORMAL_UNINSTALL)
-	@list='$(dist_webcss_DATA)'; test -n "$(webcssdir)" || list=; \
-	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(webcssdir)'; $(am__uninstall_files_from_dir)
-install-dist_webdntDATA: $(dist_webdnt_DATA)
-	@$(NORMAL_INSTALL)
-	@list='$(dist_webdnt_DATA)'; test -n "$(webdntdir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(webdntdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(webdntdir)" || exit 1; \
-	fi; \
-	for p in $$list; do \
-	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
-	  echo "$$d$$p"; \
-	done | $(am__base_list) | \
-	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webdntdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webdntdir)" || exit $$?; \
-	done
-
-uninstall-dist_webdntDATA:
-	@$(NORMAL_UNINSTALL)
-	@list='$(dist_webdnt_DATA)'; test -n "$(webdntdir)" || list=; \
-	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(webdntdir)'; $(am__uninstall_files_from_dir)
-install-dist_webfontsDATA: $(dist_webfonts_DATA)
-	@$(NORMAL_INSTALL)
-	@list='$(dist_webfonts_DATA)'; test -n "$(webfontsdir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(webfontsdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(webfontsdir)" || exit 1; \
-	fi; \
-	for p in $$list; do \
-	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
-	  echo "$$d$$p"; \
-	done | $(am__base_list) | \
-	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webfontsdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webfontsdir)" || exit $$?; \
-	done
-
-uninstall-dist_webfontsDATA:
-	@$(NORMAL_UNINSTALL)
-	@list='$(dist_webfonts_DATA)'; test -n "$(webfontsdir)" || list=; \
-	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(webfontsdir)'; $(am__uninstall_files_from_dir)
-install-dist_webimagesDATA: $(dist_webimages_DATA)
-	@$(NORMAL_INSTALL)
-	@list='$(dist_webimages_DATA)'; test -n "$(webimagesdir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(webimagesdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(webimagesdir)" || exit 1; \
-	fi; \
-	for p in $$list; do \
-	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
-	  echo "$$d$$p"; \
-	done | $(am__base_list) | \
-	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webimagesdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webimagesdir)" || exit $$?; \
-	done
-
-uninstall-dist_webimagesDATA:
-	@$(NORMAL_UNINSTALL)
-	@list='$(dist_webimages_DATA)'; test -n "$(webimagesdir)" || list=; \
-	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(webimagesdir)'; $(am__uninstall_files_from_dir)
-install-dist_weblibDATA: $(dist_weblib_DATA)
-	@$(NORMAL_INSTALL)
-	@list='$(dist_weblib_DATA)'; test -n "$(weblibdir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(weblibdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(weblibdir)" || exit 1; \
-	fi; \
-	for p in $$list; do \
-	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
-	  echo "$$d$$p"; \
-	done | $(am__base_list) | \
-	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(weblibdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(weblibdir)" || exit $$?; \
-	done
 
-uninstall-dist_weblibDATA:
-	@$(NORMAL_UNINSTALL)
-	@list='$(dist_weblib_DATA)'; test -n "$(weblibdir)" || list=; \
-	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(weblibdir)'; $(am__uninstall_files_from_dir)
-install-dist_weboldDATA: $(dist_webold_DATA)
-	@$(NORMAL_INSTALL)
-	@list='$(dist_webold_DATA)'; test -n "$(webolddir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(webolddir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(webolddir)" || exit 1; \
+# This directory's subdirectories are mostly independent; you can cd
+# into them and run 'make' without going through this Makefile.
+# To change the values of 'make' variables: instead of editing Makefiles,
+# (1) if the variable is set in 'config.status', edit 'config.status'
+#     (which will cause the Makefiles to be regenerated when you run 'make');
+# (2) otherwise, pass the desired values on the 'make' command line.
+$(am__recursive_targets):
+	@fail=; \
+	if $(am__make_keepgoing); then \
+	  failcom='fail=yes'; \
+	else \
+	  failcom='exit 1'; \
 	fi; \
-	for p in $$list; do \
-	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
-	  echo "$$d$$p"; \
-	done | $(am__base_list) | \
-	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webolddir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webolddir)" || exit $$?; \
-	done
-
-uninstall-dist_weboldDATA:
-	@$(NORMAL_UNINSTALL)
-	@list='$(dist_webold_DATA)'; test -n "$(webolddir)" || list=; \
-	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(webolddir)'; $(am__uninstall_files_from_dir)
-install-dist_webwellknownDATA: $(dist_webwellknown_DATA)
-	@$(NORMAL_INSTALL)
-	@list='$(dist_webwellknown_DATA)'; test -n "$(webwellknowndir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(webwellknowndir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(webwellknowndir)" || exit 1; \
+	dot_seen=no; \
+	target=`echo $@ | sed s/-recursive//`; \
+	case "$@" in \
+	  distclean-* | maintainer-clean-*) list='$(DIST_SUBDIRS)' ;; \
+	  *) list='$(SUBDIRS)' ;; \
+	esac; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  ($(am__cd) $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	  || eval $$failcom; \
+	done; \
+	if test "$$dot_seen" = "no"; then \
+	  $(MAKE) $(AM_MAKEFLAGS) "$$target-am" || exit 1; \
+	fi; test -z "$$fail"
+
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-recursive
+TAGS: tags
+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	set x; \
+	here=`pwd`; \
+	if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \
+	  include_option=--etags-include; \
+	  empty_fix=.; \
+	else \
+	  include_option=--include; \
+	  empty_fix=; \
 	fi; \
-	for p in $$list; do \
-	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
-	  echo "$$d$$p"; \
-	done | $(am__base_list) | \
-	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webwellknowndir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webwellknowndir)" || exit $$?; \
-	done
-
-uninstall-dist_webwellknownDATA:
-	@$(NORMAL_UNINSTALL)
-	@list='$(dist_webwellknown_DATA)'; test -n "$(webwellknowndir)" || list=; \
-	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(webwellknowndir)'; $(am__uninstall_files_from_dir)
-tags TAGS:
-
-ctags CTAGS:
-
-cscope cscopelist:
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    test ! -f $$subdir/TAGS || \
+	      set "$$@" "$$include_option=$$here/$$subdir/TAGS"; \
+	  fi; \
+	done; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: ctags-recursive
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-recursive
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
 
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
 
 distdir: $(DISTFILES)
 	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
@@ -656,22 +503,45 @@ distdir: $(DISTFILES)
 	    || exit 1; \
 	  fi; \
 	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
+	      || $(MKDIR_P) "$(distdir)/$$subdir" \
+	      || exit 1; \
+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
 check-am: all-am
-check: check-am
+check: check-recursive
 all-am: Makefile $(DATA)
-installdirs:
-	for dir in "$(DESTDIR)$(webdir)" "$(DESTDIR)$(webcssdir)" "$(DESTDIR)$(webdntdir)" "$(DESTDIR)$(webfontsdir)" "$(DESTDIR)$(webimagesdir)" "$(DESTDIR)$(weblibdir)" "$(DESTDIR)$(webolddir)" "$(DESTDIR)$(webwellknowndir)"; do \
-	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
-	done
-install: install-am
-install-exec: install-exec-am
-install-data: install-data-am
-uninstall: uninstall-am
+installdirs: installdirs-recursive
+installdirs-am:
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
 
 install-am: all-am
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-installcheck: installcheck-am
+installcheck: installcheck-recursive
 install-strip:
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@@ -694,108 +564,86 @@ maintainer-clean-generic:
 	@echo "This command is intended for maintainers to use"
 	@echo "it deletes files that may require special tools to rebuild."
 	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
-clean: clean-am
+clean: clean-recursive
 
 clean-am: clean-generic mostlyclean-am
 
-distclean: distclean-am
+distclean: distclean-recursive
 	-rm -f Makefile
-distclean-am: clean-am distclean-generic
+distclean-am: clean-am distclean-generic distclean-tags
 
-dvi: dvi-am
+dvi: dvi-recursive
 
 dvi-am:
 
-html: html-am
+html: html-recursive
 
 html-am:
 
-info: info-am
+info: info-recursive
 
 info-am:
 
-install-data-am: install-dist_webDATA install-dist_webcssDATA \
-	install-dist_webdntDATA install-dist_webfontsDATA \
-	install-dist_webimagesDATA install-dist_weblibDATA \
-	install-dist_weboldDATA install-dist_webwellknownDATA
+install-data-am:
 
-install-dvi: install-dvi-am
+install-dvi: install-dvi-recursive
 
 install-dvi-am:
 
 install-exec-am:
 
-install-html: install-html-am
+install-html: install-html-recursive
 
 install-html-am:
 
-install-info: install-info-am
+install-info: install-info-recursive
 
 install-info-am:
 
 install-man:
 
-install-pdf: install-pdf-am
+install-pdf: install-pdf-recursive
 
 install-pdf-am:
 
-install-ps: install-ps-am
+install-ps: install-ps-recursive
 
 install-ps-am:
 
 installcheck-am:
 
-maintainer-clean: maintainer-clean-am
+maintainer-clean: maintainer-clean-recursive
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
-mostlyclean: mostlyclean-am
+mostlyclean: mostlyclean-recursive
 
 mostlyclean-am: mostlyclean-generic
 
-pdf: pdf-am
+pdf: pdf-recursive
 
 pdf-am:
 
-ps: ps-am
+ps: ps-recursive
 
 ps-am:
 
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-	uninstall-dist_webdntDATA uninstall-dist_webfontsDATA \
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-	uninstall-dist_weboldDATA uninstall-dist_webwellknownDATA
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-.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
-	ctags-am distclean distclean-generic distdir dvi dvi-am html \
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-		git --git-dir="$(top_srcdir)/.git" log -n 1 --format=%H; \
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-	test -s $@.tmp || echo 0 > $@.tmp
-	mv $@.tmp $@
-
-.PHONY: version.txt
+uninstall-am:
+
+.MAKE: $(am__recursive_targets) install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-am clean clean-generic cscopelist-am ctags ctags-am \
+	distclean distclean-generic distclean-tags distdir dvi dvi-am \
+	html html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags tags-am uninstall uninstall-am
+
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
diff --git a/web/README.md b/web/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/web/README.md
diff --git a/web/api/Makefile.am b/web/api/Makefile.am
new file mode 100644
index 000000000..5755612c8
--- /dev/null
+++ b/web/api/Makefile.am
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    badges \
+    queries \
+    exporters \
+    formatters \
+    $(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+dist_web_DATA = \
+	netdata-swagger.yaml \
+	netdata-swagger.json \
+	$(NULL)
diff --git a/web/api/Makefile.in b/web/api/Makefile.in
new file mode 100644
index 000000000..7bcd57e1a
--- /dev/null
+++ b/web/api/Makefile.in
@@ -0,0 +1,709 @@
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+
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+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+
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diff --git a/web/api/README.md b/web/api/README.md
new file mode 100644
index 000000000..973d1bb6b
--- /dev/null
+++ b/web/api/README.md
@@ -0,0 +1,18 @@
+# netdata REST API
+
+The complete documentation of the netdata API is available at the **[Swagger Editor](https://editor.swagger.io/?url=https://raw.githubusercontent.com/netdata/netdata/master/web/api/netdata-swagger.yaml)**.
+
+If your prefer it over the Swagger Editor, you can also use **[Swagger UI](https://registry.my-netdata.io/swagger/#!/default/get_data)**. This however does not provide all the information available.
+
+## google charts
+
+netdata is a [Google Visualization API datatable and datasource provider](https://developers.google.com/chart/interactive/docs/reference), so it can directly be used with [Google Charts](https://developers.google.com/chart/interactive/docs/).
+
+Check this [single chart, jsfiddle example](https://jsfiddle.net/ktsaou/ensu4uws/9/):
+
+![image](https://cloud.githubusercontent.com/assets/2662304/23824762/1e236b84-0685-11e7-89f4-06fdf67d873a.png)
+
+and this [multi chart, jsfiddle example](https://jsfiddle.net/ktsaou/L5y2eqp2/):
+
+![image](https://cloud.githubusercontent.com/assets/2662304/23824766/31a4a68c-0685-11e7-8429-8327cab64be2.png)
+
diff --git a/web/api/badges/Makefile.am b/web/api/badges/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/badges/Makefile.am
@@ -0,0 +1,8 @@
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+
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diff --git a/web/api/badges/Makefile.in b/web/api/badges/Makefile.in
new file mode 100644
index 000000000..79a3a17a2
--- /dev/null
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diff --git a/web/api/badges/README.md b/web/api/badges/README.md
new file mode 100644
index 000000000..cf0b22bea
--- /dev/null
+++ b/web/api/badges/README.md
@@ -0,0 +1,324 @@
+# Netdata badges
+
+**Badges are cool!**
+
+Netdata can generate badges for any chart and any dimension at any time-frame. Badges come in `SVG` and can be added to any web page using an `<IMG>` HTML tag.
+
+**Netdata badges are powerful**!
+
+Given that netdata collects from **1.000** to **5.000** metrics per server (depending on the number of network interfaces, disks, cpu cores, applications running, users logged in, containers running, etc) and that netdata already has data reduction/aggregation functions embedded, the badges can be quite powerful.
+
+For each metric/dimension and for arbitrary time-frames badges can show **min**, **max** or **average** value, but also **sum** or **incremental-sum** to have their **volume**.
+
+For example, there is [a chart in netdata that shows the current requests/s of nginx](http://london.my-netdata.io/#nginx_local_nginx). Using this chart alone we can show the following badges (we could add more time-frames, like **today**, **yesterday**, etc):
+
+<a href="https://registry.my-netdata.io/#nginx_local_nginx"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=nginx_local.connections&dimensions=active&value_color=grey:null%7Cblue&label=nginx%20active%20connections%20now&units=null&precision=0"/></a>  <a href="https://registry.my-netdata.io/#nginx_local_nginx"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=nginx_local.connections&dimensions=active&after=-3600&value_color=orange&label=last%20hour%20average&units=null&options=unaligned&precision=0"/></a> <a href="https://registry.my-netdata.io/#nginx_local_nginx"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=nginx_local.connections&dimensions=active&group=max&after=-3600&value_color=red&label=last%20hour%20max&units=null&options=unaligned&precision=0"/></a>
+
+Similarly, there is [a chart that shows outbound bandwidth per class](http://london.my-netdata.io/#tc_eth0), using QoS data. So it shows `kilobits/s` per class. Using this chart we can show:
+
+<a href="https://registry.my-netdata.io/#tc_eth0"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=tc.world_out&dimensions=web_server&value_color=green&label=web%20server%20sends%20now&units=kbps"/></a> <a href="https://registry.my-netdata.io/#tc_eth0"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=tc.world_out&dimensions=web_server&after=-86400&options=unaligned&group=sum&divide=8388608&value_color=blue&label=web%20server%20sent%20today&units=GB"/></a>
+
+The right one is a **volume** calculation. Netdata calculated the total of the last 86.400 seconds (a day) which gives `kilobits`, then divided it by 8 to make it KB, then by 1024 to make it MB and then by 1024 to make it GB. Calculations like this are quite accurate, since for every value collected, every second, netdata interpolates it to second boundary using microsecond calculations.
+
+Let's see a few more badge examples (they come from the [netdata registry](https://github.com/netdata/netdata/wiki/mynetdata-menu-item)):
+
+- **cpu usage of user `root`** (you can pick any user; 100% = 1 core). This will be `green <10%`, `yellow <20%`, `orange <50%`, `blue <100%` (1 core), `red` otherwise (you define thresholds and colors on the URL).
+
+  <a href="https://registry.my-netdata.io/#apps_cpu"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=users.cpu&dimensions=root&value_color=grey:null%7Cgreen%3C10%7Cyellow%3C20%7Corange%3C50%7Cblue%3C100%7Cred&label=root%20user%20cpu%20now&units=%25"></img></a> <a href="https://registry.my-netdata.io/#apps_cpu"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=users.cpu&dimensions=root&after=-3600&value_color=grey:null%7Cgreen%3C10%7Cyellow%3C20%7Corange%3C50%7Cblue%3C100%7Cred&label=root%20user%20average%20cpu%20last%20hour&units=%25"></img></a>
+
+- **mysql queries per second**
+
+  <a href="https://registry.my-netdata.io/#mysql_local"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=mysql_local.queries&dimensions=questions&label=mysql%20queries%20now&value_color=red&units=%5Cs"></img></a> <a href="https://registry.my-netdata.io/#mysql_local"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=mysql_local.queries&dimensions=questions&after=-3600&options=unaligned&group=sum&label=mysql%20queries%20this%20hour&value_color=green&units=null"></img></a> <a href="https://registry.my-netdata.io/#mysql_local"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=mysql_local.queries&dimensions=questions&after=-86400&options=unaligned&group=sum&label=mysql%20queries%20today&value_color=blue&units=null"></img></a>
+
+  niche ones: **mysql SELECT statements with JOIN, which did full table scans**:
+
+  <a href="https://registry.my-netdata.io/#mysql_local_issues"><img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=mysql_local.join_issues&dimensions=scan&after=-3600&label=full%20table%20scans%20the%20last%20hour&value_color=orange&group=sum&units=null"></img></a>
+
+---
+
+> So, every single line on the charts of a [netdata dashboard](http://london.my-netdata.io/), can become a badge and this badge can calculate **average**, **min**, **max**, or **volume** for any time-frame! And you can also vary the badge color using conditions on the calculated value.
+
+---
+
+## How to create badges
+
+The basic URL is `http://your.netdata:19999/api/v1/badge.svg?option1&option2&option3&...`.
+
+Here is what you can put for `options` (these are standard netdata API options):
+
+- `chart=CHART.NAME`
+
+  The chart to get the values from.
+
+  **This is the only parameter required** and with just this parameter, netdata will return the sum of the latest values of all chart dimensions.
+
+  Example:
+
+```html
+  <a href="#">
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu"></img>
+  </a>
+```
+
+  Which produces this:
+
+  <a href="#">
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu"></img>
+  </a>
+
+- `alarm=NAME`
+
+  Render the current value and status of an alarm linked to the chart. This option can be ignored if the badge to be generated is not related to an alarm.
+
+  The current value of the alarm will be rendered. The color of the badge will indicate the status of the alarm.
+
+  For alarm badges, **both `chart` and `alarm` parameters are required**.
+
+- `dimensions=DIMENSION1|DIMENSION2|...`
+
+  The dimensions of the chart to use. If you don't set any dimension, all will be used. When multiple dimensions are used, netdata will sum their values. You can append `options=absolute` if you want this sum to convert all values to positive before adding them.
+
+  Pipes in HTML have to escaped with `%7C`.
+
+  Example:
+
+```html
+  <a href="#">
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&dimensions=system%7Cnice"></img>
+  </a>
+```
+
+  Which produces this:
+
+  <a href="#">
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&dimensions=system%7Cnice"></img>
+  </a>
+
+- `before=SECONDS` and `after=SECONDS`
+
+  The timeframe. These can be absolute unix timestamps, or relative to now, number of seconds. By default `before=0` and `after=-1` (1 second in the past).
+
+  To get the last minute set `after=-60`. This will give the average of the last complete minute (XX:XX:00 - XX:XX:59).
+
+  To get the max of the last hour set `after=-3600&group=max`. This will give the maximum value of the last complete hour (XX:00:00 - XX:59:59)
+
+  Example:
+
+```html
+  <a href="#">
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&after=-60"></img>
+  </a>
+```
+
+  Which produces the average of last complete minute (XX:XX:00 - XX:XX:59):
+
+  <a href="#">
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&after=-60"></img>
+  </a>
+
+  While this is the previous minute (one minute before the last one, again aligned XX:XX:00 - XX:XX:59):
+
+```html
+  <a href="#">
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&before=-60&after=-60"></img>
+  </a>
+```
+
+  It produces this:
+  
+  <a href="#">
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&before=-60&after=-60"></img>
+  </a>
+
+- `group=min` or `group=max` or `group=average` (the default) or `group=sum` or `group=incremental-sum`
+
+  If netdata will have to reduce (aggregate) the data to calculate the value, which aggregation method to use.
+
+  - `max` will find the max value for the timeframe. This works on both positive and negative dimensions. It will find the most extreme value.
+
+  - `min` will find the min value for the timeframe. This works on both positive and negative dimensions. It will find the number closest to zero.
+
+  - `average` will calculate the average value for the timeframe.
+
+  - `sum` will sum all the values for the timeframe. This is nice for finding the volume of dimensions for a timeframe. So if you have a dimension that reports `X per second`, you can find the volume of the dimension in a timeframe, by adding its values in that timeframe.
+
+  - `incremental-sum` will sum the difference of each value to its next. Let's assume you have a dimension that does not measure the rate of something, but the absolute value of it. So it has values like this "1, 5, 3, 7, 4". `incremental-sum` will calculate the difference of adjacent values. In this example, they will be `(5 - 1) + (3 - 5) + (7 - 3) + (4 - 7) = 3` (which is equal to the last value minus the first = 4 - 1).
+
+- `options=opt1|opt2|opt3|...`
+
+  These fine tune various options of the API. Here is what you can use for badges (the API has more option, but only these are useful for badges):
+
+  - `percentage`, instead of returning the value, calculate the percentage of the sum of the selected dimensions, versus the sum of all the dimensions of the chart. This also sets the units to `%`.
+
+  - `absolute` or `abs`, turn all values positive and then sum them.
+
+  - `display_absolute` or `display-absolute`, to use the signed value during color calculation, but display the absolute value on the badge.
+
+  - `min2max`, when multiple dimensions are given, do not sum them, but take their `max - min`.
+
+  - `unaligned`, when data are reduced / aggregated (e.g. the request is about the average of the last minute, or hour), netdata by default aligns them so that the charts will have a constant shape (so average per minute returns always XX:XX:00 - XX:XX:59). Setting the `unaligned` option, netdata will aggregate data without any alignment, so if the request is for 60 seconds, it will aggregate the latest 60 seconds of collected data.
+
+These are options dedicated to badges:
+
+- `label=TEXT`
+
+  The label of the badge.
+
+- `units=TEXT`
+
+  The units of the badge. If you want to put a `/`, please put a `\`. This is because netdata allows badges parameters to be given as path in URL, instead of query string. You can also use `null` or `empty` to show it without any units.
+
+  The units `seconds`, `minutes` and `hours` trigger special formatting. The value has to be in this unit, and netdata will automatically change it to show a more pretty duration.
+
+- `multiply=NUMBER`
+
+  Multiply the value with this number. The default is `1`.
+
+- `divide=NUMBER`
+
+  Divide the value with this number. The default is `1`.
+
+- `label_color=COLOR`
+
+  The color of the label (the left part). You can use any HTML color, include `#NNN` and `#NNNNNN`. The following colors are defined in netdata (and you can use them by name): `green`, `brightgreen`, `yellow`, `yellowgreen`, `orange`, `red`, `blue`, `grey`, `gray`, `lightgrey`, `lightgray`. These are taken from https://github.com/badges/shields so they are compatible with standard badges.
+
+- `value_color=COLOR:null|COLOR<VALUE|COLOR>VALUE|COLOR>=VALUE|COLOR<=VALUE|...`
+
+  You can add a pipe delimited list of conditions to pick the color. The first matching (left to right) will be used.
+
+  Example: `value_color=grey:null|green<10|yellow<100|orange<1000|blue<10000|red`
+
+  The above will set `grey` if no value exists (not collected within the `gap when lost iterations above` in netdata.conf for the chart), `green` if the value is less than 10, `yellow` if the value is less than 100, etc up to `red` which will be used if no other conditions match.
+
+  The supported operators are `<`, `>`, `<=`, `>=`, `=` (or `:`) and `!=` (or `<>`).
+
+- `precision=NUMBER`
+
+  The number of decimal digits of the value. By default netdata will add:
+
+  - no decimal digits for values > 1000
+  - 1 decimal digit for values > 100
+  - 2 decimal digits for values > 1
+  - 3 decimal digits for values > 0.1
+  - 4 decimal digits for values <= 0.1
+
+  Using the `precision=NUMBER` you can set your preference per badge.
+
+- `scale=XXX`
+
+  This option scales the svg image. It accepts values above or equal to 100 (100% is the default scale). For example, lets get a few different sizes:
+
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&after=-60&scale=100"></img> original<br/>
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&after=-60&scale=125"></img> `scale=125`<br/>
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&after=-60&scale=150"></img> `scale=150`<br/>
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&after=-60&scale=175"></img> `scale=175`<br/>
+     <img src="http://registry.my-netdata.io/api/v1/badge.svg?chart=system.cpu&after=-60&scale=200"></img> `scale=200`
+
+
+- `refresh=auto` or `refresh=SECONDS`
+
+  This option enables auto-refreshing of images. netdata will send the HTTP header `Refresh: SECONDS` to the web browser, thus requesting automatic refresh of the images at regular intervals.
+
+  `auto` will calculate the proper `SECONDS` to avoid unnecessary refreshes. If `SECONDS` is zero, this feature is disabled (it is also disabled by default).
+
+  Auto-refreshing like this, works only if you access the badge directly. So, you may have to put it an `embed` or `iframe` for it to be auto-refreshed. Use something like this:
+
+```html
+<embed src="BADGE_URL" type="image/svg+xml" height="20" />
+```
+
+  Another way is to use javascript to auto-refresh them. You can auto-refresh all the netdata badges on a page using javascript. You have to add a class to all the netdata badges, like this `<img class="netdata-badge" src="..."/>`. Then add this javascript code to your page (it requires jquery):
+
+```html
+<script>
+    var NETDATA_BADGES_AUTOREFRESH_SECONDS = 5;
+    function refreshNetdataBadges() {
+      var now = new Date().getTime().toString();
+      $('.netdata-badge').each(function() {
+        this.src = this.src.replace(/\&_=\d*/, '') + '&_=' + now;
+      });
+      setTimeout(refreshNetdataBadges, NETDATA_BADGES_AUTOREFRESH_SECONDS * 1000);
+    }
+    setTimeout(refreshNetdataBadges, NETDATA_BADGES_AUTOREFRESH_SECONDS * 1000);
+</script>
+```
+
+A more advanced badges refresh method is to include `http://your.netdata.ip:19999/refresh-badges.js` in your page. For more information and use example, [check this](https://github.com/netdata/netdata/blob/master/web/gui/refresh-badges.js).
+
+---
+
+## Escaping URLs
+
+Keep in mind that if you add badge URLs to your HTML pages you have to escape the special characters:
+
+character|name|escape sequence
+:-------:|:--:|:-------------:
+`   `|space (in labels and units)|`%20`
+` # `|hash (for colors)|`%23`
+` % `|percent (in units)|`%25`
+` < `|less than|`%3C`
+` > `|greater than|`%3E`
+` \ `|backslash (when you need a `/`)|`%5C`
+` \| `|pipe (delimiting parameters)|`%7C`
+
+---
+
+## Using the path instead of the query string
+
+The badges can also be generated using the URL path for passing parameters. The format is exactly the same.
+
+So instead of:
+
+  `http://your.netdata:19999/api/v1/badge.svg?option1&option2&option3&...`
+
+you can write:
+
+  `http://your.netdata:19999/api/v1/badge.svg/option1/option2/option3/...`
+
+You can also append anything else you like, like this:
+
+  `http://your.netdata:19999/api/v1/badge.svg/option1/option2/option3/my-super-badge.svg`
+
+## FAQ
+
+#### Is it fast?
+On modern hardware, netdata can generate about **2.000 badges per second per core**, before noticing any delays. It generates a badge in about half a millisecond!
+
+Of course these timing are for badges that use recent data. If you need badges that do calculations over long durations (a day, or more), timing will differ. netdata logs its timings at its `access.log`, so take a look there before adding a heavy badge on a busy web site. Of course, you can cache such badges or have a cron job get them from netdata and save them at your web server at regular intervals.
+
+
+#### Embedding badges in github
+
+You have 2 options a) SVG images with markdown and b) SVG images with HTML (directly in .md files).
+
+For example, this is the cpu badge shown above:
+
+- Markdown example:
+
+```md
+[![A nice name](https://registry.my-netdata.io/api/v1/badge.svg?chart=users.cpu&dimensions=root&value_color=grey:null%7Cgreen%3C10%7Cyellow%3C20%7Corange%3C50%7Cblue%3C100%7Cred&label=root%20user%20cpu%20now&units=%25)](https://registry.my-netdata.io/#apps_cpu)
+```
+
+- HTML example:
+
+```html
+<a href="https://registry.my-netdata.io/#apps_cpu">
+    <img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=users.cpu&dimensions=root&value_color=grey:null%7Cgreen%3C10%7Cyellow%3C20%7Corange%3C50%7Cblue%3C100%7Cred&label=root%20user%20cpu%20now&units=%25"></img>
+</a>
+```
+
+Both produce this:
+
+<a href="https://registry.my-netdata.io/#apps_cpu">
+    <img src="https://registry.my-netdata.io/api/v1/badge.svg?chart=users.cpu&dimensions=root&value_color=grey:null%7Cgreen%3C10%7Cyellow%3C20%7Corange%3C50%7Cblue%3C100%7Cred&label=root%20user%20cpu%20now&units=%25"></img>
+</a>
+
+#### auto-refreshing badges in github
+
+Unfortunately it cannot be done. Github fetches all the images using a proxy and rewrites all the URLs to be served by the proxy.
+
+You can refresh them from your browser console though. Press F12 to open the web browser console (switch to the console too), paste the following and press enter. They will refresh:
+
+```js
+var len = document.images.length; while(len--) { document.images[len].src = document.images[len].src.replace(/\?cacheBuster=\d*/, "") + "?cacheBuster=" + new Date().getTime().toString(); };
+```
\ No newline at end of file
diff --git a/src/web_buffer_svg.c b/web/api/badges/web_buffer_svg.c
index c05e526ed..d0600359e 100644
--- a/src/web_buffer_svg.c
+++ b/web/api/badges/web_buffer_svg.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "web_buffer_svg.h"
 
 #define BADGE_HORIZONTAL_PADDING 4
 #define VERDANA_KERNING 0.2
@@ -9,7 +11,7 @@
  * https://github.com/badges/shields/blob/master/measure-text.js
 */
 
-double verdana11_widths[256] = {
+static double verdana11_widths[256] = {
     [0] = 0.0,
     [1] = 0.0,
     [2] = 0.0,
@@ -428,57 +430,91 @@ static inline char *format_value_with_precision_and_unit(char *value_string, siz
     return value_string;
 }
 
+typedef enum badge_units_format {
+    UNITS_FORMAT_NONE,
+    UNITS_FORMAT_SECONDS,
+    UNITS_FORMAT_SECONDS_AGO,
+    UNITS_FORMAT_MINUTES,
+    UNITS_FORMAT_MINUTES_AGO,
+    UNITS_FORMAT_HOURS,
+    UNITS_FORMAT_HOURS_AGO,
+    UNITS_FORMAT_ONOFF,
+    UNITS_FORMAT_UPDOWN,
+    UNITS_FORMAT_OKERROR,
+    UNITS_FORMAT_OKFAILED,
+    UNITS_FORMAT_EMPTY,
+    UNITS_FORMAT_PERCENT
+} UNITS_FORMAT;
+
+
+static struct units_formatter {
+    const char *units;
+    uint32_t hash;
+    UNITS_FORMAT format;
+} badge_units_formatters[] = {
+        { "seconds",     0, UNITS_FORMAT_SECONDS },
+        { "seconds ago", 0, UNITS_FORMAT_SECONDS_AGO },
+        { "minutes",     0, UNITS_FORMAT_MINUTES },
+        { "minutes ago", 0, UNITS_FORMAT_MINUTES_AGO },
+        { "hours",       0, UNITS_FORMAT_HOURS },
+        { "hours ago",   0, UNITS_FORMAT_HOURS_AGO },
+        { "on/off",      0, UNITS_FORMAT_ONOFF },
+        { "on-off",      0, UNITS_FORMAT_ONOFF },
+        { "onoff",       0, UNITS_FORMAT_ONOFF },
+        { "up/down",     0, UNITS_FORMAT_UPDOWN },
+        { "up-down",     0, UNITS_FORMAT_UPDOWN },
+        { "updown",      0, UNITS_FORMAT_UPDOWN },
+        { "ok/error",    0, UNITS_FORMAT_OKERROR },
+        { "ok-error",    0, UNITS_FORMAT_OKERROR },
+        { "okerror",     0, UNITS_FORMAT_OKERROR },
+        { "ok/failed",   0, UNITS_FORMAT_OKFAILED },
+        { "ok-failed",   0, UNITS_FORMAT_OKFAILED },
+        { "okfailed",    0, UNITS_FORMAT_OKFAILED },
+        { "empty",       0, UNITS_FORMAT_EMPTY },
+        { "null",        0, UNITS_FORMAT_EMPTY },
+        { "percentage",  0, UNITS_FORMAT_PERCENT },
+        { "percent",     0, UNITS_FORMAT_PERCENT },
+        { "pcent",       0, UNITS_FORMAT_PERCENT },
+
+        // terminator
+        { NULL,          0, UNITS_FORMAT_NONE }
+};
+
 inline char *format_value_and_unit(char *value_string, size_t value_string_len, calculated_number value, const char *units, int precision) {
-    static uint32_t
-            hash_seconds = 0,
-            hash_seconds_ago = 0,
-            hash_minutes = 0,
-            hash_minutes_ago = 0,
-            hash_hours = 0,
-            hash_hours_ago = 0,
-            hash_onoff = 0,
-            hash_updown = 0,
-            hash_okerror = 0,
-            hash_okfailed = 0,
-            hash_empty = 0,
-            hash_null = 0,
-            hash_percentage = 0,
-            hash_percent = 0,
-            hash_pcent = 0;
-
-    if(unlikely(!hash_seconds)) {
-        hash_seconds     = simple_hash("seconds");
-        hash_seconds_ago = simple_hash("seconds ago");
-        hash_minutes     = simple_hash("minutes");
-        hash_minutes_ago = simple_hash("minutes ago");
-        hash_hours       = simple_hash("hours");
-        hash_hours_ago   = simple_hash("hours ago");
-        hash_onoff       = simple_hash("on/off");
-        hash_updown      = simple_hash("up/down");
-        hash_okerror     = simple_hash("ok/error");
-        hash_okfailed    = simple_hash("ok/failed");
-        hash_empty       = simple_hash("empty");
-        hash_null        = simple_hash("null");
-        hash_percentage  = simple_hash("percentage");
-        hash_percent     = simple_hash("percent");
-        hash_pcent       = simple_hash("pcent");
+    static int max = -1;
+    int i;
+
+    if(unlikely(max == -1)) {
+        for(i = 0; badge_units_formatters[i].units; i++)
+            badge_units_formatters[i].hash = simple_hash(badge_units_formatters[i].units);
+
+        max = i;
     }
 
     if(unlikely(!units)) units = "";
-
     uint32_t hash_units = simple_hash(units);
 
-    if(unlikely((hash_units == hash_seconds && !strcmp(units, "seconds")) || (hash_units == hash_seconds_ago && !strcmp(units, "seconds ago")))) {
+    UNITS_FORMAT format = UNITS_FORMAT_NONE;
+    for(i = 0; i < max; i++) {
+        struct units_formatter *ptr = &badge_units_formatters[i];
+
+        if(hash_units == ptr->hash && !strcmp(units, ptr->units)) {
+            format = ptr->format;
+            break;
+        }
+    }
+
+    if(unlikely(format == UNITS_FORMAT_SECONDS || format == UNITS_FORMAT_SECONDS_AGO)) {
         if(value == 0.0) {
             snprintfz(value_string, value_string_len, "%s", "now");
             return value_string;
         }
         else if(isnan(value) || isinf(value)) {
-            snprintfz(value_string, value_string_len, "%s", "never");
+            snprintfz(value_string, value_string_len, "%s", "undefined");
             return value_string;
         }
 
-        const char *suffix = (hash_units == hash_seconds_ago)?" ago":"";
+        const char *suffix = (format == UNITS_FORMAT_SECONDS_AGO)?" ago":"";
 
         size_t s = (size_t)value;
         size_t d = s / 86400;
@@ -498,17 +534,17 @@ inline char *format_value_and_unit(char *value_string, size_t value_string_len,
         return value_string;
     }
 
-    else if(unlikely((hash_units == hash_minutes && !strcmp(units, "minutes")) || (hash_units == hash_minutes_ago && !strcmp(units, "minutes ago")))) {
+    else if(unlikely(format == UNITS_FORMAT_MINUTES || format == UNITS_FORMAT_MINUTES_AGO)) {
         if(value == 0.0) {
             snprintfz(value_string, value_string_len, "%s", "now");
             return value_string;
         }
         else if(isnan(value) || isinf(value)) {
-            snprintfz(value_string, value_string_len, "%s", "never");
+            snprintfz(value_string, value_string_len, "%s", "undefined");
             return value_string;
         }
 
-        const char *suffix = (hash_units == hash_minutes_ago)?" ago":"";
+        const char *suffix = (format == UNITS_FORMAT_MINUTES_AGO)?" ago":"";
 
         size_t m = (size_t)value;
         size_t d = m / (60 * 24);
@@ -525,17 +561,17 @@ inline char *format_value_and_unit(char *value_string, size_t value_string_len,
         return value_string;
     }
 
-    else if(unlikely((hash_units == hash_hours && !strcmp(units, "hours")) || (hash_units == hash_hours_ago && !strcmp(units, "hours ago")))) {
+    else if(unlikely(format == UNITS_FORMAT_HOURS || format == UNITS_FORMAT_HOURS_AGO)) {
         if(value == 0.0) {
             snprintfz(value_string, value_string_len, "%s", "now");
             return value_string;
         }
         else if(isnan(value) || isinf(value)) {
-            snprintfz(value_string, value_string_len, "%s", "never");
+            snprintfz(value_string, value_string_len, "%s", "undefined");
             return value_string;
         }
 
-        const char *suffix = (hash_units == hash_hours_ago)?" ago":"";
+        const char *suffix = (format == UNITS_FORMAT_HOURS_AGO)?" ago":"";
 
         size_t h = (size_t)value;
         size_t d = h / 24;
@@ -549,42 +585,32 @@ inline char *format_value_and_unit(char *value_string, size_t value_string_len,
         return value_string;
     }
 
-    else if(unlikely(hash_units == hash_onoff && !strcmp(units, "on/off"))) {
+    else if(unlikely(format == UNITS_FORMAT_ONOFF)) {
         snprintfz(value_string, value_string_len, "%s", (value != 0.0)?"on":"off");
         return value_string;
     }
 
-    else if(unlikely(hash_units == hash_updown && !strcmp(units, "up/down"))) {
+    else if(unlikely(format == UNITS_FORMAT_UPDOWN)) {
         snprintfz(value_string, value_string_len, "%s", (value != 0.0)?"up":"down");
         return value_string;
     }
 
-    else if(unlikely(hash_units == hash_okerror && !strcmp(units, "ok/error"))) {
+    else if(unlikely(format == UNITS_FORMAT_OKERROR)) {
         snprintfz(value_string, value_string_len, "%s", (value != 0.0)?"ok":"error");
         return value_string;
     }
 
-    else if(unlikely(hash_units == hash_okfailed && !strcmp(units, "ok/failed"))) {
+    else if(unlikely(format == UNITS_FORMAT_OKFAILED)) {
         snprintfz(value_string, value_string_len, "%s", (value != 0.0)?"ok":"failed");
         return value_string;
     }
 
-    else if(unlikely(hash_units == hash_empty && !strcmp(units, "empty")))
+    else if(unlikely(format == UNITS_FORMAT_EMPTY))
         units = "";
 
-    else if(unlikely(hash_units == hash_null && !strcmp(units, "null")))
-        units = "";
-
-    else if(unlikely(hash_units == hash_percentage && !strcmp(units, "percentage")))
-        units = "%";
-
-    else if(unlikely(hash_units == hash_percent && !strcmp(units, "percent")))
-        units = "%";
-
-    else if(unlikely(hash_units == hash_pcent && !strcmp(units, "pcent")))
+    else if(unlikely(format == UNITS_FORMAT_PERCENT))
         units = "%";
 
-
     if(unlikely(isnan(value) || isinf(value))) {
         strcpy(value_string, "-");
         return value_string;
@@ -593,20 +619,51 @@ inline char *format_value_and_unit(char *value_string, size_t value_string_len,
     return format_value_with_precision_and_unit(value_string, value_string_len, value, units, precision);
 }
 
+static struct badge_color {
+    const char *name;
+    uint32_t hash;
+    const char *color;
+} badge_colors[] = {
+
+        // colors from:
+        // https://github.com/badges/shields/blob/master/colorscheme.json
+
+        { "brightgreen", 0, "#4c1"    },
+        { "green",       0, "#97CA00" },
+        { "yellow",      0, "#dfb317" },
+        { "yellowgreen", 0, "#a4a61d" },
+        { "orange",      0, "#fe7d37" },
+        { "red",         0, "#e05d44" },
+        { "blue",        0, "#007ec6" },
+        { "grey",        0, "#555"    },
+        { "gray",        0, "#555"    },
+        { "lightgrey",   0, "#9f9f9f" },
+        { "lightgray",   0, "#9f9f9f" },
+
+        // terminator
+        { NULL,          0, NULL      }
+};
+
 static inline const char *color_map(const char *color) {
-    // colors from:
-    // https://github.com/badges/shields/blob/master/colorscheme.json
-         if(!strcmp(color, "brightgreen")) return "#4c1";
-    else if(!strcmp(color, "green"))       return "#97CA00";
-    else if(!strcmp(color, "yellow"))      return "#dfb317";
-    else if(!strcmp(color, "yellowgreen")) return "#a4a61d";
-    else if(!strcmp(color, "orange"))      return "#fe7d37";
-    else if(!strcmp(color, "red"))         return "#e05d44";
-    else if(!strcmp(color, "blue"))        return "#007ec6";
-    else if(!strcmp(color, "grey"))        return "#555";
-    else if(!strcmp(color, "gray"))        return "#555";
-    else if(!strcmp(color, "lightgrey"))   return "#9f9f9f";
-    else if(!strcmp(color, "lightgray"))   return "#9f9f9f";
+    static int max = -1;
+    int i;
+
+    if(unlikely(max == -1)) {
+        for(i = 0; badge_colors[i].name ;i++)
+            badge_colors[i].hash = simple_hash(badge_colors[i].name);
+
+        max = i;
+    }
+
+    uint32_t hash = simple_hash(color);
+
+    for(i = 0; i < max; i++) {
+        struct badge_color *ptr = &badge_colors[i];
+
+        if(hash == ptr->hash && !strcmp(color, ptr->name))
+            return ptr->color;
+    }
+
     return color;
 }
 
@@ -830,3 +887,256 @@ void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const ch
         label_width + value_width / 2 -1, ceil(height - text_offset), value_escaped,
         label_width + value_width / 2 -1, ceil(height - text_offset - 1.0), value_escaped);
 }
+
+int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *url) {
+    int ret = 400;
+    buffer_flush(w->response.data);
+
+    BUFFER *dimensions = NULL;
+
+    const char *chart = NULL
+    , *before_str = NULL
+    , *after_str = NULL
+    , *points_str = NULL
+    , *multiply_str = NULL
+    , *divide_str = NULL
+    , *label = NULL
+    , *units = NULL
+    , *label_color = NULL
+    , *value_color = NULL
+    , *refresh_str = NULL
+    , *precision_str = NULL
+    , *scale_str = NULL
+    , *alarm = NULL;
+
+    int group = RRDR_GROUPING_AVERAGE;
+    uint32_t options = 0x00000000;
+
+    while(url) {
+        char *value = mystrsep(&url, "/?&");
+        if(!value || !*value) continue;
+
+        char *name = mystrsep(&value, "=");
+        if(!name || !*name) continue;
+        if(!value || !*value) continue;
+
+        debug(D_WEB_CLIENT, "%llu: API v1 badge.svg query param '%s' with value '%s'", w->id, name, value);
+
+        // name and value are now the parameters
+        // they are not null and not empty
+
+        if(!strcmp(name, "chart")) chart = value;
+        else if(!strcmp(name, "dimension") || !strcmp(name, "dim") || !strcmp(name, "dimensions") || !strcmp(name, "dims")) {
+            if(!dimensions)
+                dimensions = buffer_create(100);
+
+            buffer_strcat(dimensions, "|");
+            buffer_strcat(dimensions, value);
+        }
+        else if(!strcmp(name, "after")) after_str = value;
+        else if(!strcmp(name, "before")) before_str = value;
+        else if(!strcmp(name, "points")) points_str = value;
+        else if(!strcmp(name, "group")) {
+            group = web_client_api_request_v1_data_group(value, RRDR_GROUPING_AVERAGE);
+        }
+        else if(!strcmp(name, "options")) {
+            options |= web_client_api_request_v1_data_options(value);
+        }
+        else if(!strcmp(name, "label")) label = value;
+        else if(!strcmp(name, "units")) units = value;
+        else if(!strcmp(name, "label_color")) label_color = value;
+        else if(!strcmp(name, "value_color")) value_color = value;
+        else if(!strcmp(name, "multiply")) multiply_str = value;
+        else if(!strcmp(name, "divide")) divide_str = value;
+        else if(!strcmp(name, "refresh")) refresh_str = value;
+        else if(!strcmp(name, "precision")) precision_str = value;
+        else if(!strcmp(name, "scale")) scale_str = value;
+        else if(!strcmp(name, "alarm")) alarm = value;
+    }
+
+    if(!chart || !*chart) {
+        buffer_no_cacheable(w->response.data);
+        buffer_sprintf(w->response.data, "No chart id is given at the request.");
+        goto cleanup;
+    }
+
+    int scale = (scale_str && *scale_str)?str2i(scale_str):100;
+
+    RRDSET *st = rrdset_find(host, chart);
+    if(!st) st = rrdset_find_byname(host, chart);
+    if(!st) {
+        buffer_no_cacheable(w->response.data);
+        buffer_svg(w->response.data, "chart not found", NAN, "", NULL, NULL, -1, scale, 0);
+        ret = 200;
+        goto cleanup;
+    }
+    st->last_accessed_time = now_realtime_sec();
+
+    RRDCALC *rc = NULL;
+    if(alarm) {
+        rc = rrdcalc_find(st, alarm);
+        if (!rc) {
+            buffer_no_cacheable(w->response.data);
+            buffer_svg(w->response.data, "alarm not found", NAN, "", NULL, NULL, -1, scale, 0);
+            ret = 200;
+            goto cleanup;
+        }
+    }
+
+    long long multiply  = (multiply_str  && *multiply_str )?str2l(multiply_str):1;
+    long long divide    = (divide_str    && *divide_str   )?str2l(divide_str):1;
+    long long before    = (before_str    && *before_str   )?str2l(before_str):0;
+    long long after     = (after_str     && *after_str    )?str2l(after_str):-st->update_every;
+    int       points    = (points_str    && *points_str   )?str2i(points_str):1;
+    int       precision = (precision_str && *precision_str)?str2i(precision_str):-1;
+
+    if(!multiply) multiply = 1;
+    if(!divide) divide = 1;
+
+    int refresh = 0;
+    if(refresh_str && *refresh_str) {
+        if(!strcmp(refresh_str, "auto")) {
+            if(rc) refresh = rc->update_every;
+            else if(options & RRDR_OPTION_NOT_ALIGNED)
+                refresh = st->update_every;
+            else {
+                refresh = (int)(before - after);
+                if(refresh < 0) refresh = -refresh;
+            }
+        }
+        else {
+            refresh = str2i(refresh_str);
+            if(refresh < 0) refresh = -refresh;
+        }
+    }
+
+    if(!label) {
+        if(alarm) {
+            char *s = (char *)alarm;
+            while(*s) {
+                if(*s == '_') *s = ' ';
+                s++;
+            }
+            label = alarm;
+        }
+        else if(dimensions) {
+            const char *dim = buffer_tostring(dimensions);
+            if(*dim == '|') dim++;
+            label = dim;
+        }
+        else
+            label = st->name;
+    }
+    if(!units) {
+        if(alarm) {
+            if(rc->units)
+                units = rc->units;
+            else
+                units = "";
+        }
+        else if(options & RRDR_OPTION_PERCENTAGE)
+            units = "%";
+        else
+            units = st->units;
+    }
+
+    debug(D_WEB_CLIENT, "%llu: API command 'badge.svg' for chart '%s', alarm '%s', dimensions '%s', after '%lld', before '%lld', points '%d', group '%d', options '0x%08x'"
+          , w->id
+          , chart
+          , alarm?alarm:""
+          , (dimensions)?buffer_tostring(dimensions):""
+          , after
+          , before
+          , points
+          , group
+          , options
+    );
+
+    if(rc) {
+        if (refresh > 0) {
+            buffer_sprintf(w->response.header, "Refresh: %d\r\n", refresh);
+            w->response.data->expires = now_realtime_sec() + refresh;
+        }
+        else buffer_no_cacheable(w->response.data);
+
+        if(!value_color) {
+            switch(rc->status) {
+                case RRDCALC_STATUS_CRITICAL:
+                    value_color = "red";
+                    break;
+
+                case RRDCALC_STATUS_WARNING:
+                    value_color = "orange";
+                    break;
+
+                case RRDCALC_STATUS_CLEAR:
+                    value_color = "brightgreen";
+                    break;
+
+                case RRDCALC_STATUS_UNDEFINED:
+                    value_color = "lightgrey";
+                    break;
+
+                case RRDCALC_STATUS_UNINITIALIZED:
+                    value_color = "#000";
+                    break;
+
+                default:
+                    value_color = "grey";
+                    break;
+            }
+        }
+
+        buffer_svg(w->response.data,
+                label,
+                (isnan(rc->value)||isinf(rc->value)) ? rc->value : rc->value * multiply / divide,
+                units,
+                label_color,
+                value_color,
+                precision,
+                scale,
+                options
+        );
+        ret = 200;
+    }
+    else {
+        time_t latest_timestamp = 0;
+        int value_is_null = 1;
+        calculated_number n = NAN;
+        ret = 500;
+
+        // if the collected value is too old, don't calculate its value
+        if (rrdset_last_entry_t(st) >= (now_realtime_sec() - (st->update_every * st->gap_when_lost_iterations_above)))
+            ret = rrdset2value_api_v1(st, w->response.data, &n, (dimensions) ? buffer_tostring(dimensions) : NULL
+                                      , points, after, before, group, 0, options, NULL, &latest_timestamp, &value_is_null);
+
+        // if the value cannot be calculated, show empty badge
+        if (ret != 200) {
+            buffer_no_cacheable(w->response.data);
+            value_is_null = 1;
+            n = 0;
+            ret = 200;
+        }
+        else if (refresh > 0) {
+            buffer_sprintf(w->response.header, "Refresh: %d\r\n", refresh);
+            w->response.data->expires = now_realtime_sec() + refresh;
+        }
+        else buffer_no_cacheable(w->response.data);
+
+        // render the badge
+        buffer_svg(w->response.data,
+                label,
+                (value_is_null)?NAN:(n * multiply / divide),
+                units,
+                label_color,
+                value_color,
+                precision,
+                scale,
+                options
+        );
+    }
+
+    cleanup:
+    buffer_free(dimensions);
+    return ret;
+}
diff --git a/src/web_buffer_svg.h b/web/api/badges/web_buffer_svg.h
index c23abf0dc..f75677bf9 100644
--- a/src/web_buffer_svg.h
+++ b/web/api/badges/web_buffer_svg.h
@@ -1,7 +1,16 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_WEB_BUFFER_SVG_H
 #define NETDATA_WEB_BUFFER_SVG_H 1
 
+#include "libnetdata/libnetdata.h"
+#include "web/server/web_client.h"
+
 extern void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const char *units, const char *label_color, const char *value_color, int precision, int scale, uint32_t options);
 extern char *format_value_and_unit(char *value_string, size_t value_string_len, calculated_number value, const char *units, int precision);
 
+extern int web_client_api_request_v1_badge(struct rrdhost *host, struct web_client *w, char *url);
+
+#include "web/api/web_api_v1.h"
+
 #endif /* NETDATA_WEB_BUFFER_SVG_H */
diff --git a/web/api/exporters/Makefile.am b/web/api/exporters/Makefile.am
new file mode 100644
index 000000000..3dce98aa9
--- /dev/null
+++ b/web/api/exporters/Makefile.am
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    shell \
+    prometheus \
+    $(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/exporters/Makefile.in b/web/api/exporters/Makefile.in
new file mode 100644
index 000000000..50e4a6cda
--- /dev/null
+++ b/web/api/exporters/Makefile.in
@@ -0,0 +1,649 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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+    shell \
+    prometheus \
+    $(NULL)
+
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+	README.md \
+	$(NULL)
+
+all: all-recursive
+
+.SUFFIXES:
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+	    *$$dep*) \
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+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu web/api/exporters/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu web/api/exporters/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
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+	esac;
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+# (1) if the variable is set in 'config.status', edit 'config.status'
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+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
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+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
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+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
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+	@echo "it deletes files that may require special tools to rebuild."
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diff --git a/web/api/exporters/README.md b/web/api/exporters/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/web/api/exporters/README.md
diff --git a/web/api/exporters/allmetrics.c b/web/api/exporters/allmetrics.c
new file mode 100644
index 000000000..a426db0cc
--- /dev/null
+++ b/web/api/exporters/allmetrics.c
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "allmetrics.h"
+
+struct prometheus_output_options {
+    char *name;
+    PROMETHEUS_OUTPUT_OPTIONS flag;
+} prometheus_output_flags_root[] = {
+        { "help",       PROMETHEUS_OUTPUT_HELP       },
+        { "types",      PROMETHEUS_OUTPUT_TYPES      },
+        { "names",      PROMETHEUS_OUTPUT_NAMES      },
+        { "timestamps", PROMETHEUS_OUTPUT_TIMESTAMPS },
+        { "variables",  PROMETHEUS_OUTPUT_VARIABLES  },
+
+        // terminator
+        { NULL, PROMETHEUS_OUTPUT_NONE },
+};
+
+inline int web_client_api_request_v1_allmetrics(RRDHOST *host, struct web_client *w, char *url) {
+    int format = ALLMETRICS_SHELL;
+    const char *prometheus_server = w->client_ip;
+    uint32_t prometheus_backend_options = global_backend_options;
+    PROMETHEUS_OUTPUT_OPTIONS prometheus_output_options = PROMETHEUS_OUTPUT_TIMESTAMPS | ((global_backend_options & BACKEND_OPTION_SEND_NAMES)?PROMETHEUS_OUTPUT_NAMES:0);
+    const char *prometheus_prefix = global_backend_prefix;
+
+    while(url) {
+        char *value = mystrsep(&url, "?&");
+        if (!value || !*value) continue;
+
+        char *name = mystrsep(&value, "=");
+        if(!name || !*name) continue;
+        if(!value || !*value) continue;
+
+        if(!strcmp(name, "format")) {
+            if(!strcmp(value, ALLMETRICS_FORMAT_SHELL))
+                format = ALLMETRICS_SHELL;
+            else if(!strcmp(value, ALLMETRICS_FORMAT_PROMETHEUS))
+                format = ALLMETRICS_PROMETHEUS;
+            else if(!strcmp(value, ALLMETRICS_FORMAT_PROMETHEUS_ALL_HOSTS))
+                format = ALLMETRICS_PROMETHEUS_ALL_HOSTS;
+            else if(!strcmp(value, ALLMETRICS_FORMAT_JSON))
+                format = ALLMETRICS_JSON;
+            else
+                format = 0;
+        }
+        else if(!strcmp(name, "server")) {
+            prometheus_server = value;
+        }
+        else if(!strcmp(name, "prefix")) {
+            prometheus_prefix = value;
+        }
+        else if(!strcmp(name, "data") || !strcmp(name, "source") || !strcmp(name, "data source") || !strcmp(name, "data-source") || !strcmp(name, "data_source") || !strcmp(name, "datasource")) {
+            prometheus_backend_options = backend_parse_data_source(value, prometheus_backend_options);
+        }
+        else {
+            int i;
+            for(i = 0; prometheus_output_flags_root[i].name ; i++) {
+                if(!strcmp(name, prometheus_output_flags_root[i].name)) {
+                    if(!strcmp(value, "yes") || !strcmp(value, "1") || !strcmp(value, "true"))
+                        prometheus_output_options |= prometheus_output_flags_root[i].flag;
+                    else
+                        prometheus_output_options &= ~prometheus_output_flags_root[i].flag;
+
+                    break;
+                }
+            }
+        }
+    }
+
+    buffer_flush(w->response.data);
+    buffer_no_cacheable(w->response.data);
+
+    switch(format) {
+        case ALLMETRICS_JSON:
+            w->response.data->contenttype = CT_APPLICATION_JSON;
+            rrd_stats_api_v1_charts_allmetrics_json(host, w->response.data);
+            return 200;
+
+        case ALLMETRICS_SHELL:
+            w->response.data->contenttype = CT_TEXT_PLAIN;
+            rrd_stats_api_v1_charts_allmetrics_shell(host, w->response.data);
+            return 200;
+
+        case ALLMETRICS_PROMETHEUS:
+            w->response.data->contenttype = CT_PROMETHEUS;
+            rrd_stats_api_v1_charts_allmetrics_prometheus_single_host(
+                    host
+                    , w->response.data
+                    , prometheus_server
+                    , prometheus_prefix
+                    , prometheus_backend_options
+                    , prometheus_output_options
+            );
+            return 200;
+
+        case ALLMETRICS_PROMETHEUS_ALL_HOSTS:
+            w->response.data->contenttype = CT_PROMETHEUS;
+            rrd_stats_api_v1_charts_allmetrics_prometheus_all_hosts(
+                    host
+                    , w->response.data
+                    , prometheus_server
+                    , prometheus_prefix
+                    , prometheus_backend_options
+                    , prometheus_output_options
+            );
+            return 200;
+
+        default:
+            w->response.data->contenttype = CT_TEXT_PLAIN;
+            buffer_strcat(w->response.data, "Which format? '" ALLMETRICS_FORMAT_SHELL "', '" ALLMETRICS_FORMAT_PROMETHEUS "', '" ALLMETRICS_FORMAT_PROMETHEUS_ALL_HOSTS "' and '" ALLMETRICS_FORMAT_JSON "' are currently supported.");
+            return 400;
+    }
+}
diff --git a/web/api/exporters/allmetrics.h b/web/api/exporters/allmetrics.h
new file mode 100644
index 000000000..e8dedabf4
--- /dev/null
+++ b/web/api/exporters/allmetrics.h
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_ALLMETRICS_H
+#define NETDATA_API_ALLMETRICS_H
+
+#include "web/api/formatters/rrd2json.h"
+#include "shell/allmetrics_shell.h"
+
+extern int web_client_api_request_v1_allmetrics(RRDHOST *host, struct web_client *w, char *url);
+
+#endif //NETDATA_API_ALLMETRICS_H
diff --git a/web/api/exporters/prometheus/Makefile.am b/web/api/exporters/prometheus/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/exporters/prometheus/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/exporters/prometheus/Makefile.in b/web/api/exporters/prometheus/Makefile.in
new file mode 100644
index 000000000..202f19b3d
--- /dev/null
+++ b/web/api/exporters/prometheus/Makefile.in
@@ -0,0 +1,464 @@
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+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
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+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+      *) echo "am__make_running_with_option: internal error: invalid" \
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+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
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+  test $$has_opt = yes
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diff --git a/web/api/exporters/prometheus/README.md b/web/api/exporters/prometheus/README.md
new file mode 100644
index 000000000..437f90c53
--- /dev/null
+++ b/web/api/exporters/prometheus/README.md
@@ -0,0 +1,3 @@
+# prometheus exporter
+
+The prometheus exporter for netdata is located at the [backends section for prometheus](../../../../backends/prometheus).
diff --git a/web/api/exporters/shell/Makefile.am b/web/api/exporters/shell/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
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+top_build_prefix = @top_build_prefix@
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+top_srcdir = @top_srcdir@
+varlibdir = @varlibdir@
+webdir = @webdir@
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu web/api/exporters/shell/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu web/api/exporters/shell/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
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+html: html-am
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+html-am:
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+info: info-am
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+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
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+pdf: pdf-am
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+ps: ps-am
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+ps-am:
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+uninstall-am:
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+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/web/api/exporters/shell/README.md b/web/api/exporters/shell/README.md
new file mode 100644
index 000000000..065afff5c
--- /dev/null
+++ b/web/api/exporters/shell/README.md
@@ -0,0 +1,64 @@
+# shell exporter
+
+Shell scripts can now query netdata:
+
+```sh
+eval "$(curl -s 'http://localhost:19999/api/v1/allmetrics')"
+```
+
+after this command, all the netdata metrics are exposed to shell. Check:
+
+```sh
+# source the metrics
+eval "$(curl -s 'http://localhost:19999/api/v1/allmetrics')"
+
+# let's see if there are variables exposed by netdata for system.cpu
+set | grep "^NETDATA_SYSTEM_CPU"
+
+NETDATA_SYSTEM_CPU_GUEST=0
+NETDATA_SYSTEM_CPU_GUEST_NICE=0
+NETDATA_SYSTEM_CPU_IDLE=95
+NETDATA_SYSTEM_CPU_IOWAIT=0
+NETDATA_SYSTEM_CPU_IRQ=0
+NETDATA_SYSTEM_CPU_NICE=0
+NETDATA_SYSTEM_CPU_SOFTIRQ=0
+NETDATA_SYSTEM_CPU_STEAL=0
+NETDATA_SYSTEM_CPU_SYSTEM=1
+NETDATA_SYSTEM_CPU_USER=4
+NETDATA_SYSTEM_CPU_VISIBLETOTAL=5
+
+# let's see the total cpu utilization of the system
+echo ${NETDATA_SYSTEM_CPU_VISIBLETOTAL}
+5
+
+# what about alarms?
+set | grep "^NETDATA_ALARM_SYSTEM_SWAP_"
+NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_STATUS=CRITICAL
+NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_VALUE=53
+NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_STATUS=CLEAR
+NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_VALUE=51
+
+# let's get the current status of the alarm 'ram in swap'
+echo ${NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_STATUS}
+CRITICAL
+
+# is it fast?
+time curl -s 'http://localhost:19999/api/v1/allmetrics' >/dev/null
+
+real  0m0,070s
+user  0m0,000s
+sys   0m0,007s
+
+# it is...
+# 0.07 seconds for curl to be loaded, connect to netdata and fetch the response back...
+```
+
+The `_VISIBLETOTAL` variable sums up all the dimensions of each chart.
+
+The format of the variables is:
+
+```sh
+NETDATA_${chart_id^^}_${dimension_id^^}="${value}"
+```
+
+The value is rounded to the closest integer, since shell script cannot process decimal numbers.
diff --git a/web/api/exporters/shell/allmetrics_shell.c b/web/api/exporters/shell/allmetrics_shell.c
new file mode 100644
index 000000000..e380deec4
--- /dev/null
+++ b/web/api/exporters/shell/allmetrics_shell.c
@@ -0,0 +1,159 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "allmetrics_shell.h"
+
+// ----------------------------------------------------------------------------
+// BASH
+// /api/v1/allmetrics?format=bash
+
+static inline size_t shell_name_copy(char *d, const char *s, size_t usable) {
+    size_t n;
+
+    for(n = 0; *s && n < usable ; d++, s++, n++) {
+        register char c = *s;
+
+        if(unlikely(!isalnum(c))) *d = '_';
+        else *d = (char)toupper(c);
+    }
+    *d = '\0';
+
+    return n;
+}
+
+#define SHELL_ELEMENT_MAX 100
+
+void rrd_stats_api_v1_charts_allmetrics_shell(RRDHOST *host, BUFFER *wb) {
+    rrdhost_rdlock(host);
+
+    // for each chart
+    RRDSET *st;
+    rrdset_foreach_read(st, host) {
+        calculated_number total = 0.0;
+        char chart[SHELL_ELEMENT_MAX + 1];
+        shell_name_copy(chart, st->name?st->name:st->id, SHELL_ELEMENT_MAX);
+
+        buffer_sprintf(wb, "\n# chart: %s (name: %s)\n", st->id, st->name);
+        if(rrdset_is_available_for_viewers(st)) {
+            rrdset_rdlock(st);
+
+            // for each dimension
+            RRDDIM *rd;
+            rrddim_foreach_read(rd, st) {
+                if(rd->collections_counter) {
+                    char dimension[SHELL_ELEMENT_MAX + 1];
+                    shell_name_copy(dimension, rd->name?rd->name:rd->id, SHELL_ELEMENT_MAX);
+
+                    calculated_number n = rd->last_stored_value;
+
+                    if(isnan(n) || isinf(n))
+                        buffer_sprintf(wb, "NETDATA_%s_%s=\"\"      # %s\n", chart, dimension, st->units);
+                    else {
+                        if(rd->multiplier < 0 || rd->divisor < 0) n = -n;
+                        n = calculated_number_round(n);
+                        if(!rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)) total += n;
+                        buffer_sprintf(wb, "NETDATA_%s_%s=\"" CALCULATED_NUMBER_FORMAT_ZERO "\"      # %s\n", chart, dimension, n, st->units);
+                    }
+                }
+            }
+
+            total = calculated_number_round(total);
+            buffer_sprintf(wb, "NETDATA_%s_VISIBLETOTAL=\"" CALCULATED_NUMBER_FORMAT_ZERO "\"      # %s\n", chart, total, st->units);
+            rrdset_unlock(st);
+        }
+    }
+
+    buffer_strcat(wb, "\n# NETDATA ALARMS RUNNING\n");
+
+    RRDCALC *rc;
+    for(rc = host->alarms; rc ;rc = rc->next) {
+        if(!rc->rrdset) continue;
+
+        char chart[SHELL_ELEMENT_MAX + 1];
+        shell_name_copy(chart, rc->rrdset->name?rc->rrdset->name:rc->rrdset->id, SHELL_ELEMENT_MAX);
+
+        char alarm[SHELL_ELEMENT_MAX + 1];
+        shell_name_copy(alarm, rc->name, SHELL_ELEMENT_MAX);
+
+        calculated_number n = rc->value;
+
+        if(isnan(n) || isinf(n))
+            buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_VALUE=\"\"      # %s\n", chart, alarm, rc->units);
+        else {
+            n = calculated_number_round(n);
+            buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_VALUE=\"" CALCULATED_NUMBER_FORMAT_ZERO "\"      # %s\n", chart, alarm, n, rc->units);
+        }
+
+        buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_STATUS=\"%s\"\n", chart, alarm, rrdcalc_status2string(rc->status));
+    }
+
+    rrdhost_unlock(host);
+}
+
+// ----------------------------------------------------------------------------
+
+void rrd_stats_api_v1_charts_allmetrics_json(RRDHOST *host, BUFFER *wb) {
+    rrdhost_rdlock(host);
+
+    buffer_strcat(wb, "{");
+
+    size_t chart_counter = 0;
+    size_t dimension_counter = 0;
+
+    // for each chart
+    RRDSET *st;
+    rrdset_foreach_read(st, host) {
+        if(rrdset_is_available_for_viewers(st)) {
+            rrdset_rdlock(st);
+
+            buffer_sprintf(wb, "%s\n"
+                               "\t\"%s\": {\n"
+                               "\t\t\"name\":\"%s\",\n"
+                               "\t\t\"context\":\"%s\",\n"
+                               "\t\t\"units\":\"%s\",\n"
+                               "\t\t\"last_updated\": %ld,\n"
+                               "\t\t\"dimensions\": {"
+                           , chart_counter?",":""
+                           , st->id
+                           , st->name
+                           , st->context
+                           , st->units
+                           , rrdset_last_entry_t(st)
+            );
+
+            chart_counter++;
+            dimension_counter = 0;
+
+            // for each dimension
+            RRDDIM *rd;
+            rrddim_foreach_read(rd, st) {
+                if(rd->collections_counter) {
+
+                    buffer_sprintf(wb, "%s\n"
+                                       "\t\t\t\"%s\": {\n"
+                                       "\t\t\t\t\"name\": \"%s\",\n"
+                                       "\t\t\t\t\"value\": "
+                                   , dimension_counter?",":""
+                                   , rd->id
+                                   , rd->name
+                    );
+
+                    if(isnan(rd->last_stored_value))
+                        buffer_strcat(wb, "null");
+                    else
+                        buffer_sprintf(wb, CALCULATED_NUMBER_FORMAT, rd->last_stored_value);
+
+                    buffer_strcat(wb, "\n\t\t\t}");
+
+                    dimension_counter++;
+                }
+            }
+
+            buffer_strcat(wb, "\n\t\t}\n\t}");
+            rrdset_unlock(st);
+        }
+    }
+
+    buffer_strcat(wb, "\n}");
+    rrdhost_unlock(host);
+}
+
diff --git a/web/api/exporters/shell/allmetrics_shell.h b/web/api/exporters/shell/allmetrics_shell.h
new file mode 100644
index 000000000..1d7611a2d
--- /dev/null
+++ b/web/api/exporters/shell/allmetrics_shell.h
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_ALLMETRICS_SHELL_H
+#define NETDATA_API_ALLMETRICS_SHELL_H
+
+#include "../allmetrics.h"
+
+#define ALLMETRICS_FORMAT_SHELL                 "shell"
+#define ALLMETRICS_FORMAT_PROMETHEUS            "prometheus"
+#define ALLMETRICS_FORMAT_PROMETHEUS_ALL_HOSTS  "prometheus_all_hosts"
+#define ALLMETRICS_FORMAT_JSON                  "json"
+
+#define ALLMETRICS_SHELL                        1
+#define ALLMETRICS_PROMETHEUS                   2
+#define ALLMETRICS_JSON                         3
+#define ALLMETRICS_PROMETHEUS_ALL_HOSTS         4
+
+extern void rrd_stats_api_v1_charts_allmetrics_json(RRDHOST *host, BUFFER *wb);
+extern void rrd_stats_api_v1_charts_allmetrics_shell(RRDHOST *host, BUFFER *wb);
+
+#endif //NETDATA_API_ALLMETRICS_SHELL_H
diff --git a/web/api/formatters/Makefile.am b/web/api/formatters/Makefile.am
new file mode 100644
index 000000000..324575906
--- /dev/null
+++ b/web/api/formatters/Makefile.am
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    csv \
+    json \
+    ssv \
+    value \
+    $(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/formatters/Makefile.in b/web/api/formatters/Makefile.in
new file mode 100644
index 000000000..a2ea0e53c
--- /dev/null
+++ b/web/api/formatters/Makefile.in
@@ -0,0 +1,651 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-recursive
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-tags
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+dvi: dvi-recursive
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+dvi-am:
+
+html: html-recursive
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+
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+
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+
+install-html: install-html-recursive
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+
+install-pdf: install-pdf-recursive
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+
+install-ps: install-ps-recursive
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+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
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+.MAKE: $(am__recursive_targets) install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-am clean clean-generic cscopelist-am ctags ctags-am \
+	distclean distclean-generic distclean-tags distdir dvi dvi-am \
+	html html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/web/api/formatters/README.md b/web/api/formatters/README.md
new file mode 100644
index 000000000..ad0df2d46
--- /dev/null
+++ b/web/api/formatters/README.md
@@ -0,0 +1,72 @@
+# Query formatting
+
+API data queries need to be formatted before returned to the caller.
+Using API parameters, the caller may define the format he/she wishes to get back.
+
+The following formats are supported:
+
+format|module|content type|description
+:---:|:---:|:---:|:-----
+`array`|[ssv](ssv)|application/json|a JSON array
+`csv`|[csv](csv)|text/plain|a text table, comma separated, with a header line (dimension names) and `\r\n` at the end of the lines
+`csvjsonarray`|[csv](csv)|application/json|a JSON array, with each row as another array (the first row has the dimension names)
+`datasource`|[json](json)|application/json|a Google Visualization Provider `datasource` javascript callback
+`datatable`|[json](json)|application/json|a Google `datatable`
+`html`|[csv](csv)|text/html|an html table
+`json`|[json](json)|application/json|a JSON object
+`jsonp`|[json](json)|application/json|a JSONP javascript callback
+`markdown`|[csv](csv)|text/plain|a markdown table
+`ssv`|[ssv](ssv)|text/plain|a space separated list of values
+`ssvcomma`|[ssv](ssv)|text/plain|a comma separated list of values
+`tsv`|[csv](csv)|text/plain|a TAB delimited `csv` (MS Excel flavor)
+
+For examples of each format, check the relative module documentation.
+
+## Metadata with the `jsonwrap` option
+
+All data queries can be encapsulated to JSON object having metadata about the query and the results.
+
+This is done by adding the `options=jsonwrap` to the API URL (if there are other `options` append
+`,jsonwrap` to the existing ones).
+
+This is such an object:
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=system.cpu&after=-3600&points=6&group=average&format=csv&options=nonzero,jsonwrap'
+{
+   "api": 1,
+   "id": "system.cpu",
+   "name": "system.cpu",
+   "view_update_every": 600,
+   "update_every": 1,
+   "first_entry": 1540387074,
+   "last_entry": 1540647070,
+   "before": 1540647000,
+   "after": 1540644000,
+   "dimension_names": ["steal", "softirq", "user", "system", "iowait"],
+   "dimension_ids": ["steal", "softirq", "user", "system", "iowait"],
+   "latest_values": [0, 0.2493766, 1.745636, 0.4987531, 0],
+   "view_latest_values": [0.0158314, 0.0516506, 0.866549, 0.7196127, 0.0050002],
+   "dimensions": 5,
+   "points": 6,
+   "format": "csv",
+   "result": "time,steal,softirq,user,system,iowait\n2018-10-27 13:30:00,0.0158314,0.0516506,0.866549,0.7196127,0.0050002\n2018-10-27 13:20:00,0.0149856,0.0529183,0.8673155,0.7121144,0.0049979\n2018-10-27 13:10:00,0.0137501,0.053315,0.8578097,0.7197613,0.0054209\n2018-10-27 13:00:00,0.0154252,0.0554688,0.899432,0.7200638,0.0067252\n2018-10-27 12:50:00,0.0145866,0.0495922,0.8404341,0.7011141,0.0041688\n2018-10-27 12:40:00,0.0162366,0.0595954,0.8827475,0.7020573,0.0041636\n",
+ "min": 0,
+ "max": 0
+}
+```
+
+## Downloading data query result files
+
+Following the [Google Visualization Provider guidelines](https://developers.google.com/chart/interactive/docs/dev/implementing_data_source),
+netdata supports parsing `tqx` options.
+
+Using these options, any netdata data query can instruct the web browser to download
+the result and save it under a given filename.
+
+For example, to download a CSV file with CPU utilization of the last hour,
+[click here](https://registry.my-netdata.io/api/v1/data?chart=system.cpu&after=-3600&format=csv&options=nonzero&tqx=outFileName:system+cpu+utilization+of+the+last_hour.csv).
+
+
+This is done by appending `&tqx=outFileName:FILENAME` to any data query.
+The output will be in the format given with `&format=`.
diff --git a/web/api/formatters/charts2json.c b/web/api/formatters/charts2json.c
new file mode 100644
index 000000000..f60f7f540
--- /dev/null
+++ b/web/api/formatters/charts2json.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "charts2json.h"
+
+// generate JSON for the /api/v1/charts API call
+
+void charts2json(RRDHOST *host, BUFFER *wb) {
+    static char *custom_dashboard_info_js_filename = NULL;
+    size_t c, dimensions = 0, memory = 0, alarms = 0;
+    RRDSET *st;
+
+    time_t now = now_realtime_sec();
+
+    if(unlikely(!custom_dashboard_info_js_filename))
+        custom_dashboard_info_js_filename = config_get(CONFIG_SECTION_WEB, "custom dashboard_info.js", "");
+
+    buffer_sprintf(wb, "{\n"
+                       "\t\"hostname\": \"%s\""
+                       ",\n\t\"version\": \"%s\""
+                       ",\n\t\"os\": \"%s\""
+                       ",\n\t\"timezone\": \"%s\""
+                       ",\n\t\"update_every\": %d"
+                       ",\n\t\"history\": %ld"
+                       ",\n\t\"custom_info\": \"%s\""
+                       ",\n\t\"charts\": {"
+                   , host->hostname
+                   , host->program_version
+                   , host->os
+                   , host->timezone
+                   , host->rrd_update_every
+                   , host->rrd_history_entries
+                   , custom_dashboard_info_js_filename
+    );
+
+    c = 0;
+    rrdhost_rdlock(host);
+    rrdset_foreach_read(st, host) {
+        if(rrdset_is_available_for_viewers(st)) {
+            if(c) buffer_strcat(wb, ",");
+            buffer_strcat(wb, "\n\t\t\"");
+            buffer_strcat(wb, st->id);
+            buffer_strcat(wb, "\": ");
+            rrdset2json(st, wb, &dimensions, &memory);
+
+            c++;
+            st->last_accessed_time = now;
+        }
+    }
+
+    RRDCALC *rc;
+    for(rc = host->alarms; rc ; rc = rc->next) {
+        if(rc->rrdset)
+            alarms++;
+    }
+    rrdhost_unlock(host);
+
+    buffer_sprintf(wb
+                   , "\n\t}"
+                     ",\n\t\"charts_count\": %zu"
+                     ",\n\t\"dimensions_count\": %zu"
+                     ",\n\t\"alarms_count\": %zu"
+                     ",\n\t\"rrd_memory_bytes\": %zu"
+                     ",\n\t\"hosts_count\": %zu"
+                     ",\n\t\"hosts\": ["
+                   , c
+                   , dimensions
+                   , alarms
+                   , memory
+                   , rrd_hosts_available
+    );
+
+    if(unlikely(rrd_hosts_available > 1)) {
+        rrd_rdlock();
+
+        size_t found = 0;
+        RRDHOST *h;
+        rrdhost_foreach_read(h) {
+            if(!rrdhost_should_be_removed(h, host, now)) {
+                buffer_sprintf(wb
+                               , "%s\n\t\t{"
+                                 "\n\t\t\t\"hostname\": \"%s\""
+                                 "\n\t\t}"
+                               , (found > 0) ? "," : ""
+                               , h->hostname
+                );
+
+                found++;
+            }
+        }
+
+        rrd_unlock();
+    }
+    else {
+        buffer_sprintf(wb
+                       , "\n\t\t{"
+                         "\n\t\t\t\"hostname\": \"%s\""
+                         "\n\t\t}"
+                       , host->hostname
+        );
+    }
+
+    buffer_sprintf(wb, "\n\t]\n}\n");
+}
diff --git a/web/api/formatters/charts2json.h b/web/api/formatters/charts2json.h
new file mode 100644
index 000000000..5d6d80060
--- /dev/null
+++ b/web/api/formatters/charts2json.h
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_FORMATTER_CHARTS2JSON_H
+#define NETDATA_API_FORMATTER_CHARTS2JSON_H
+
+#include "rrd2json.h"
+
+extern void charts2json(RRDHOST *host, BUFFER *wb);
+
+#endif //NETDATA_API_FORMATTER_CHARTS2JSON_H
diff --git a/web/api/formatters/csv/Makefile.am b/web/api/formatters/csv/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/formatters/csv/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/formatters/csv/Makefile.in b/web/api/formatters/csv/Makefile.in
new file mode 100644
index 000000000..9ba808443
--- /dev/null
+++ b/web/api/formatters/csv/Makefile.in
@@ -0,0 +1,464 @@
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+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+localedir = @localedir@
+localstatedir = @localstatedir@
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+mandir = @mandir@
+mkdir_p = @mkdir_p@
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+pluginsdir = @pluginsdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
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+pythondir = @pythondir@
+registrydir = @registrydir@
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+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+varlibdir = @varlibdir@
+webdir = @webdir@
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu web/api/formatters/csv/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu web/api/formatters/csv/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
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+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
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+ps: ps-am
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+ps-am:
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+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/web/api/formatters/csv/README.md b/web/api/formatters/csv/README.md
new file mode 100644
index 000000000..4711dcbd1
--- /dev/null
+++ b/web/api/formatters/csv/README.md
@@ -0,0 +1,139 @@
+# CSV formatter
+
+The CSV formatter presents [results of database queries](../../queries) in the following formats:
+
+format|content type|description
+:---:|:---:|:-----
+`csv`|text/plain|a text table, comma separated, with a header line (dimension names) and `\r\n` at the end of the lines
+`csvjsonarray`|application/json|a JSON array, with each row as another array (the first row has the dimension names)
+`tsv`|text/plain|like `csv` but TAB is used instead of comma to separate values (MS Excel flavor)
+`html`|text/html|an html table
+`markdown`|text/plain|markdown table
+
+In all formats the date and time is the first column.
+
+The CSV formatter respects the following API `&options=`:
+
+option|supported|description
+:---:|:---:|:---
+`nonzero`|yes|to return only the dimensions that have at least a non-zero value
+`flip`|yes|to return the rows older to newer (the default is newer to older)
+`seconds`|yes|to return the date and time in unix timestamp
+`ms`|yes|to return the date and time in unit timestamp as milliseconds
+`percent`|yes|to replace all values with their percentage over the row total
+`abs`|yes|to turn all values positive
+`null2zero`|yes|to replace gaps with zeros (the default prints the string `null`
+
+
+## Examples
+
+Get the system total bandwidth for all physical network interfaces, over the last hour,
+in 6 rows (one for every 10 minutes), in `csv` format:
+
+Netdata always returns bandwidth in `kilobits`.
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=system.net&format=csv&after=-3600&group=sum&points=6&options=abs'
+time,received,sent
+2018-10-26 23:50:00,90214.67847,215137.79762
+2018-10-26 23:40:00,90126.32286,238587.57522
+2018-10-26 23:30:00,86061.22688,213389.23526
+2018-10-26 23:20:00,85590.75164,206129.01608
+2018-10-26 23:10:00,83163.30691,194311.77384
+2018-10-26 23:00:00,85167.29657,197538.07773
+```
+
+---
+
+Get the max RAM used by the SQL server and any cron jobs, over the last hour, in 2 rows (one for every 30
+minutes), in `tsv` format, and format the date and time as unix timestamp:
+
+Netdata always returns memory in `MB`.
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=apps.mem&format=tsv&after=-3600&group=max&points=2&options=nonzero,seconds&dimensions=sql,cron'
+time	sql	cron
+1540598400	61.95703	0.25
+1540596600	61.95703	0.25
+```
+
+---
+
+Get an HTML table of the last 4 values (4 seconds) of system CPU utilization:
+
+Netdata always returns CPU utilization as `%`.
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=system.cpu&format=html&after=-4&options=nonzero'
+<html>
+<center>
+<table border="0" cellpadding="5" cellspacing="5">
+<tr><td>time</td><td>softirq</td><td>user</td><td>system</td></tr>
+<tr><td>2018-10-27 00:16:07</td><td>0.25</td><td>1</td><td>0.75</td></tr>
+<tr><td>2018-10-27 00:16:06</td><td>0</td><td>1.0025063</td><td>0.5012531</td></tr>
+<tr><td>2018-10-27 00:16:05</td><td>0</td><td>1</td><td>0.75</td></tr>
+<tr><td>2018-10-27 00:16:04</td><td>0</td><td>1.0025063</td><td>0.7518797</td></tr>
+</table>
+</center>
+</html>
+```
+
+This is how it looks when rendered by a web browser:
+
+![image](https://user-images.githubusercontent.com/2662304/47597887-bafbf480-d99c-11e8-864a-d880bb8d2e5b.png)
+
+
+---
+
+Get a JSON array with the average bandwidth rate of the mysql server, over the last hour, in 6 values
+(one every 10 minutes), and return the date and time in milliseconds:
+
+Netdata always returns bandwidth rates in `kilobits/s`.
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=mysql_local.net&format=csvjsonarray&after=-3600&points=6&group=average&options=abs,ms'
+[
+["time","in","out"],
+[1540599600000,0.7499986,120.2810185],
+[1540599000000,0.7500019,120.2815509],
+[1540598400000,0.7499999,120.2812319],
+[1540597800000,0.7500044,120.2819634],
+[1540597200000,0.7499968,120.2807337],
+[1540596600000,0.7499988,120.2810527]
+]
+``` 
+
+---
+
+Get the number of processes started per minute, for the last 10 minutes, in `markdown` format:
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=system.forks&format=markdown&after=-600&points=10&group=sum'
+time|started
+:---:|:---:
+2018-10-27 03:52:00|245.1706149
+2018-10-27 03:51:00|152.6654636
+2018-10-27 03:50:00|163.1755789
+2018-10-27 03:49:00|176.1574766
+2018-10-27 03:48:00|178.0137076
+2018-10-27 03:47:00|183.8306543
+2018-10-27 03:46:00|264.1635621
+2018-10-27 03:45:00|205.001551
+2018-10-27 03:44:00|7026.9852167
+2018-10-27 03:43:00|205.9904794
+```
+
+And this is how it looks when formatted:
+
+time|started
+:---:|:---:
+2018-10-27 03:52:00|245.1706149
+2018-10-27 03:51:00|152.6654636
+2018-10-27 03:50:00|163.1755789
+2018-10-27 03:49:00|176.1574766
+2018-10-27 03:48:00|178.0137076
+2018-10-27 03:47:00|183.8306543
+2018-10-27 03:46:00|264.1635621
+2018-10-27 03:45:00|205.001551
+2018-10-27 03:44:00|7026.9852167
+2018-10-27 03:43:00|205.9904794
diff --git a/web/api/formatters/csv/csv.c b/web/api/formatters/csv/csv.c
new file mode 100644
index 000000000..53bf29828
--- /dev/null
+++ b/web/api/formatters/csv/csv.c
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "libnetdata/libnetdata.h"
+#include "csv.h"
+
+void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const char *startline, const char *separator, const char *endline, const char *betweenlines) {
+    rrdset_check_rdlock(r->st);
+
+    //info("RRD2CSV(): %s: BEGIN", r->st->id);
+    long c, i;
+    RRDDIM *d;
+
+    // print the csv header
+    for(c = 0, i = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+        if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+        if(!i) {
+            buffer_strcat(wb, startline);
+            if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+            buffer_strcat(wb, "time");
+            if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+        }
+        buffer_strcat(wb, separator);
+        if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+        buffer_strcat(wb, d->name);
+        if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+        i++;
+    }
+    buffer_strcat(wb, endline);
+
+    if(format == DATASOURCE_CSV_MARKDOWN) {
+        // print the --- line after header
+        for(c = 0, i = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+            if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+            if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+            if(!i) {
+                buffer_strcat(wb, startline);
+                if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+                buffer_strcat(wb, ":---:");
+                if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+            }
+            buffer_strcat(wb, separator);
+            if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+            buffer_strcat(wb, ":---:");
+            if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+            i++;
+        }
+        buffer_strcat(wb, endline);
+    }
+
+    if(!i) {
+        // no dimensions present
+        return;
+    }
+
+    long start = 0, end = rrdr_rows(r), step = 1;
+    if(!(options & RRDR_OPTION_REVERSED)) {
+        start = rrdr_rows(r) - 1;
+        end = -1;
+        step = -1;
+    }
+
+    // for each line in the array
+    calculated_number total = 1;
+    for(i = start; i != end ;i += step) {
+        calculated_number *cn = &r->v[ i * r->d ];
+        RRDR_VALUE_FLAGS *co = &r->o[ i * r->d ];
+
+        buffer_strcat(wb, betweenlines);
+        buffer_strcat(wb, startline);
+
+        time_t now = r->t[i];
+
+        if((options & RRDR_OPTION_SECONDS) || (options & RRDR_OPTION_MILLISECONDS)) {
+            // print the timestamp of the line
+            buffer_rrd_value(wb, (calculated_number)now);
+            // in ms
+            if(options & RRDR_OPTION_MILLISECONDS) buffer_strcat(wb, "000");
+        }
+        else {
+            // generate the local date time
+            struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
+            if(!tm) { error("localtime() failed."); continue; }
+            buffer_date(wb, tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
+        }
+
+        int set_min_max = 0;
+        if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
+            total = 0;
+            for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+                calculated_number n = cn[c];
+
+                if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+                    n = -n;
+
+                total += n;
+            }
+            // prevent a division by zero
+            if(total == 0) total = 1;
+            set_min_max = 1;
+        }
+
+        // for each dimension
+        for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+            if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+            if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+            buffer_strcat(wb, separator);
+
+            calculated_number n = cn[c];
+
+            if(co[c] & RRDR_VALUE_EMPTY) {
+                if(options & RRDR_OPTION_NULL2ZERO)
+                    buffer_strcat(wb, "0");
+                else
+                    buffer_strcat(wb, "null");
+            }
+            else {
+                if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+                    n = -n;
+
+                if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
+                    n = n * 100 / total;
+
+                    if(unlikely(set_min_max)) {
+                        r->min = r->max = n;
+                        set_min_max = 0;
+                    }
+
+                    if(n < r->min) r->min = n;
+                    if(n > r->max) r->max = n;
+                }
+
+                buffer_rrd_value(wb, n);
+            }
+        }
+
+        buffer_strcat(wb, endline);
+    }
+    //info("RRD2CSV(): %s: END", r->st->id);
+}
diff --git a/web/api/formatters/csv/csv.h b/web/api/formatters/csv/csv.h
new file mode 100644
index 000000000..a89742d34
--- /dev/null
+++ b/web/api/formatters/csv/csv.h
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_FORMATTER_CSV_H
+#define NETDATA_API_FORMATTER_CSV_H
+
+#include "web/api/queries/rrdr.h"
+
+extern void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const char *startline, const char *separator, const char *endline, const char *betweenlines);
+
+#include "../rrd2json.h"
+
+#endif //NETDATA_API_FORMATTER_CSV_H
diff --git a/web/api/formatters/json/Makefile.am b/web/api/formatters/json/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/formatters/json/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/formatters/json/Makefile.in b/web/api/formatters/json/Makefile.in
new file mode 100644
index 000000000..5289347d0
--- /dev/null
+++ b/web/api/formatters/json/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
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diff --git a/web/api/formatters/json/README.md b/web/api/formatters/json/README.md
new file mode 100644
index 000000000..4f0bad5ca
--- /dev/null
+++ b/web/api/formatters/json/README.md
@@ -0,0 +1,150 @@
+# JSON formatter
+
+The CSV formatter presents [results of database queries](../../queries) in the following formats:
+
+format|content type|description
+:---:|:---:|:-----
+`json`|application/json|return the query result as a json object
+`jsonp`|application/json|return the query result as a JSONP javascript callback
+`datatable`|application/json|return the query result as a Google `datatable`
+`datasource`|application/json|return the query result as a Google Visualization Provider `datasource` javascript callback
+
+The CSV formatter respects the following API `&options=`:
+
+option|supported|description
+:---:|:---:|:---
+`google_json`|yes|enable the Google flavor of JSON (using double quotes for strings and `Date()` function for dates
+`objectrows`|yes|return each row as an object, instead of an array
+`nonzero`|yes|to return only the dimensions that have at least a non-zero value
+`flip`|yes|to return the rows older to newer (the default is newer to older)
+`seconds`|yes|to return the date and time in unix timestamp
+`ms`|yes|to return the date and time in unit timestamp as milliseconds
+`percent`|yes|to replace all values with their percentage over the row total
+`abs`|yes|to turn all values positive
+`null2zero`|yes|to replace gaps with zeros (the default prints the string `null`
+
+## Examples
+
+To show the differences between each format, in the following examples we query the same
+chart (having just one dimension called `active`), changing only the query `format` and its `options`.
+
+> Using `format=json` and `options=`
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=nginx_local.connections&after=-3600&points=6&group=average&format=json&options='
+{
+ "labels": ["time", "active"],
+    "data":
+ [
+      [ 1540644600, 224.2516667],
+      [ 1540644000, 229.29],
+      [ 1540643400, 222.41],
+      [ 1540642800, 226.6816667],
+      [ 1540642200, 246.4083333],
+      [ 1540641600, 241.0966667]
+  ]
+}
+```
+
+> Using `format=json` and `options=objectrows`
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=nginx_local.connections&after=-3600&points=6&group=average&format=json&options=objectrows'
+{
+ "labels": ["time", "active"],
+    "data":
+ [
+      { "time": 1540644600, "active": 224.2516667},
+      { "time": 1540644000, "active": 229.29},
+      { "time": 1540643400, "active": 222.41},
+      { "time": 1540642800, "active": 226.6816667},
+      { "time": 1540642200, "active": 246.4083333},
+      { "time": 1540641600, "active": 241.0966667}
+  ]
+}
+```
+
+> Using `format=json` and `options=objectrows,google_json`
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=nginx_local.connections&after=-3600&points=6&group=average&formatjson&options=objectrows,google_json'
+{
+ "labels": ["time", "active"],
+    "data":
+ [
+      { "time": new Date(2018,9,27,12,50,0), "active": 224.2516667},
+      { "time": new Date(2018,9,27,12,40,0), "active": 229.29},
+      { "time": new Date(2018,9,27,12,30,0), "active": 222.41},
+      { "time": new Date(2018,9,27,12,20,0), "active": 226.6816667},
+      { "time": new Date(2018,9,27,12,10,0), "active": 246.4083333},
+      { "time": new Date(2018,9,27,12,0,0), "active": 241.0966667}
+  ]
+}
+```
+
+> Using `format=jsonp` and `options=`
+
+```bash
+curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=nginx_local.connections&after=-3600&points=6&group=average&formjsonp&options='
+callback({
+ "labels": ["time", "active"],
+    "data":
+ [
+      [ 1540645200, 235.885],
+      [ 1540644600, 224.2516667],
+      [ 1540644000, 229.29],
+      [ 1540643400, 222.41],
+      [ 1540642800, 226.6816667],
+      [ 1540642200, 246.4083333]
+  ]
+});
+```
+
+> Using `format=datatable` and `options=`
+
+```bash
+$ curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=nginx_local.connections&after=-3600&points=6&group=average&formdatatable&options='
+{
+ "cols":
+ [
+        {"id":"","label":"time","pattern":"","type":"datetime"},
+        {"id":"","label":"","pattern":"","type":"string","p":{"role":"annotation"}},
+        {"id":"","label":"","pattern":"","type":"string","p":{"role":"annotationText"}},
+     {"id":"","label":"active","pattern":"","type":"number"}
+  ],
+    "rows":
+ [
+        {"c":[{"v":"Date(2018,9,27,13,0,0)"},{"v":null},{"v":null},{"v":235.885}]},
+        {"c":[{"v":"Date(2018,9,27,12,50,0)"},{"v":null},{"v":null},{"v":224.2516667}]},
+        {"c":[{"v":"Date(2018,9,27,12,40,0)"},{"v":null},{"v":null},{"v":229.29}]},
+        {"c":[{"v":"Date(2018,9,27,12,30,0)"},{"v":null},{"v":null},{"v":222.41}]},
+        {"c":[{"v":"Date(2018,9,27,12,20,0)"},{"v":null},{"v":null},{"v":226.6816667}]},
+        {"c":[{"v":"Date(2018,9,27,12,10,0)"},{"v":null},{"v":null},{"v":246.4083333}]}
+  ]
+}
+```
+
+> Using `format=datasource` and `options=`
+
+```bash
+curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=nginx_local.connections&after=-3600&points=6&group=average&format=datasource&options='
+google.visualization.Query.setResponse({version:'0.6',reqId:'0',status:'ok',sig:'1540645368',table:{
+ "cols":
+ [
+        {"id":"","label":"time","pattern":"","type":"datetime"},
+        {"id":"","label":"","pattern":"","type":"string","p":{"role":"annotation"}},
+        {"id":"","label":"","pattern":"","type":"string","p":{"role":"annotationText"}},
+     {"id":"","label":"active","pattern":"","type":"number"}
+  ],
+    "rows":
+ [
+        {"c":[{"v":"Date(2018,9,27,13,0,0)"},{"v":null},{"v":null},{"v":235.885}]},
+        {"c":[{"v":"Date(2018,9,27,12,50,0)"},{"v":null},{"v":null},{"v":224.2516667}]},
+        {"c":[{"v":"Date(2018,9,27,12,40,0)"},{"v":null},{"v":null},{"v":229.29}]},
+        {"c":[{"v":"Date(2018,9,27,12,30,0)"},{"v":null},{"v":null},{"v":222.41}]},
+        {"c":[{"v":"Date(2018,9,27,12,20,0)"},{"v":null},{"v":null},{"v":226.6816667}]},
+        {"c":[{"v":"Date(2018,9,27,12,10,0)"},{"v":null},{"v":null},{"v":246.4083333}]}
+  ]
+}});
+```
+
diff --git a/web/api/formatters/json/json.c b/web/api/formatters/json/json.c
new file mode 100644
index 000000000..66b3b9c83
--- /dev/null
+++ b/web/api/formatters/json/json.c
@@ -0,0 +1,246 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "json.h"
+
+#define JSON_DATES_JS 1
+#define JSON_DATES_TIMESTAMP 2
+
+void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
+    rrdset_check_rdlock(r->st);
+
+    //info("RRD2JSON(): %s: BEGIN", r->st->id);
+    int row_annotations = 0, dates, dates_with_new = 0;
+    char kq[2] = "",                    // key quote
+            sq[2] = "",                     // string quote
+            pre_label[101] = "",            // before each label
+            post_label[101] = "",           // after each label
+            pre_date[101] = "",             // the beginning of line, to the date
+            post_date[101] = "",            // closing the date
+            pre_value[101] = "",            // before each value
+            post_value[101] = "",           // after each value
+            post_line[101] = "",            // at the end of each row
+            normal_annotation[201] = "",    // default row annotation
+            overflow_annotation[201] = "",  // overflow row annotation
+            data_begin[101] = "",           // between labels and values
+            finish[101] = "";               // at the end of everything
+
+    if(datatable) {
+        dates = JSON_DATES_JS;
+        if( options & RRDR_OPTION_GOOGLE_JSON ) {
+            kq[0] = '\0';
+            sq[0] = '\'';
+        }
+        else {
+            kq[0] = '"';
+            sq[0] = '"';
+        }
+        row_annotations = 1;
+        snprintfz(pre_date,   100, "        {%sc%s:[{%sv%s:%s", kq, kq, kq, kq, sq);
+        snprintfz(post_date,  100, "%s}", sq);
+        snprintfz(pre_label,  100, ",\n     {%sid%s:%s%s,%slabel%s:%s", kq, kq, sq, sq, kq, kq, sq);
+        snprintfz(post_label, 100, "%s,%spattern%s:%s%s,%stype%s:%snumber%s}", sq, kq, kq, sq, sq, kq, kq, sq, sq);
+        snprintfz(pre_value,  100, ",{%sv%s:", kq, kq);
+        strcpy(post_value,         "}");
+        strcpy(post_line,          "]}");
+        snprintfz(data_begin, 100, "\n  ],\n    %srows%s:\n [\n", kq, kq);
+        strcpy(finish,             "\n  ]\n}");
+
+        snprintfz(overflow_annotation, 200, ",{%sv%s:%sRESET OR OVERFLOW%s},{%sv%s:%sThe counters have been wrapped.%s}", kq, kq, sq, sq, kq, kq, sq, sq);
+        snprintfz(normal_annotation,   200, ",{%sv%s:null},{%sv%s:null}", kq, kq, kq, kq);
+
+        buffer_sprintf(wb, "{\n %scols%s:\n [\n", kq, kq);
+        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%stime%s,%spattern%s:%s%s,%stype%s:%sdatetime%s},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq);
+        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotation%s}},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
+        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotationText%s}}", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
+
+        // remove the valueobjects flag
+        // google wants its own keys
+        if(options & RRDR_OPTION_OBJECTSROWS)
+            options &= ~RRDR_OPTION_OBJECTSROWS;
+    }
+    else {
+        kq[0] = '"';
+        sq[0] = '"';
+        if(options & RRDR_OPTION_GOOGLE_JSON) {
+            dates = JSON_DATES_JS;
+            dates_with_new = 1;
+        }
+        else {
+            dates = JSON_DATES_TIMESTAMP;
+            dates_with_new = 0;
+        }
+        if( options & RRDR_OPTION_OBJECTSROWS )
+            strcpy(pre_date, "      { ");
+        else
+            strcpy(pre_date, "      [ ");
+        strcpy(pre_label,  ", \"");
+        strcpy(post_label, "\"");
+        strcpy(pre_value,  ", ");
+        if( options & RRDR_OPTION_OBJECTSROWS )
+            strcpy(post_line, "}");
+        else
+            strcpy(post_line, "]");
+        snprintfz(data_begin, 100, "],\n    %sdata%s:\n [\n", kq, kq);
+        strcpy(finish,             "\n  ]\n}");
+
+        buffer_sprintf(wb, "{\n %slabels%s: [", kq, kq);
+        buffer_sprintf(wb, "%stime%s", sq, sq);
+    }
+
+    // -------------------------------------------------------------------------
+    // print the JSON header
+
+    long c, i;
+    RRDDIM *rd;
+
+    // print the header lines
+    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+        if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+        buffer_strcat(wb, pre_label);
+        buffer_strcat(wb, rd->name);
+        buffer_strcat(wb, post_label);
+        i++;
+    }
+    if(!i) {
+        buffer_strcat(wb, pre_label);
+        buffer_strcat(wb, "no data");
+        buffer_strcat(wb, post_label);
+    }
+
+    // print the begin of row data
+    buffer_strcat(wb, data_begin);
+
+    // if all dimensions are hidden, print a null
+    if(!i) {
+        buffer_strcat(wb, finish);
+        return;
+    }
+
+    long start = 0, end = rrdr_rows(r), step = 1;
+    if(!(options & RRDR_OPTION_REVERSED)) {
+        start = rrdr_rows(r) - 1;
+        end = -1;
+        step = -1;
+    }
+
+    // for each line in the array
+    calculated_number total = 1;
+    for(i = start; i != end ;i += step) {
+        calculated_number *cn = &r->v[ i * r->d ];
+        RRDR_VALUE_FLAGS *co = &r->o[ i * r->d ];
+
+        time_t now = r->t[i];
+
+        if(dates == JSON_DATES_JS) {
+            // generate the local date time
+            struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
+            if(!tm) { error("localtime_r() failed."); continue; }
+
+            if(likely(i != start)) buffer_strcat(wb, ",\n");
+            buffer_strcat(wb, pre_date);
+
+            if( options & RRDR_OPTION_OBJECTSROWS )
+                buffer_sprintf(wb, "%stime%s: ", kq, kq);
+
+            if(dates_with_new)
+                buffer_strcat(wb, "new ");
+
+            buffer_jsdate(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+            buffer_strcat(wb, post_date);
+
+            if(row_annotations) {
+                // google supports one annotation per row
+                int annotation_found = 0;
+                for(c = 0, rd = r->st->dimensions; rd ;c++, rd = rd->next) {
+                    if(unlikely(!(r->od[c] & RRDR_DIMENSION_SELECTED))) continue;
+
+                    if(co[c] & RRDR_VALUE_RESET) {
+                        buffer_strcat(wb, overflow_annotation);
+                        annotation_found = 1;
+                        break;
+                    }
+                }
+                if(!annotation_found)
+                    buffer_strcat(wb, normal_annotation);
+            }
+        }
+        else {
+            // print the timestamp of the line
+            if(likely(i != start)) buffer_strcat(wb, ",\n");
+            buffer_strcat(wb, pre_date);
+
+            if( options & RRDR_OPTION_OBJECTSROWS )
+                buffer_sprintf(wb, "%stime%s: ", kq, kq);
+
+            buffer_rrd_value(wb, (calculated_number)r->t[i]);
+            // in ms
+            if(options & RRDR_OPTION_MILLISECONDS) buffer_strcat(wb, "000");
+
+            buffer_strcat(wb, post_date);
+        }
+
+        int set_min_max = 0;
+        if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
+            total = 0;
+            for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+                calculated_number n = cn[c];
+
+                if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+                    n = -n;
+
+                total += n;
+            }
+            // prevent a division by zero
+            if(total == 0) total = 1;
+            set_min_max = 1;
+        }
+
+        // for each dimension
+        for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+            if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+            if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+            calculated_number n = cn[c];
+
+            buffer_strcat(wb, pre_value);
+
+            if( options & RRDR_OPTION_OBJECTSROWS )
+                buffer_sprintf(wb, "%s%s%s: ", kq, rd->name, kq);
+
+            if(co[c] & RRDR_VALUE_EMPTY) {
+                if(options & RRDR_OPTION_NULL2ZERO)
+                    buffer_strcat(wb, "0");
+                else
+                    buffer_strcat(wb, "null");
+            }
+            else {
+                if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+                    n = -n;
+
+                if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
+                    n = n * 100 / total;
+
+                    if(unlikely(set_min_max)) {
+                        r->min = r->max = n;
+                        set_min_max = 0;
+                    }
+
+                    if(n < r->min) r->min = n;
+                    if(n > r->max) r->max = n;
+                }
+
+                buffer_rrd_value(wb, n);
+            }
+
+            buffer_strcat(wb, post_value);
+        }
+
+        buffer_strcat(wb, post_line);
+    }
+
+    buffer_strcat(wb, finish);
+    //info("RRD2JSON(): %s: END", r->st->id);
+}
diff --git a/web/api/formatters/json/json.h b/web/api/formatters/json/json.h
new file mode 100644
index 000000000..01363ce01
--- /dev/null
+++ b/web/api/formatters/json/json.h
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_FORMATTER_JSON_H
+#define NETDATA_API_FORMATTER_JSON_H
+
+#include "../rrd2json.h"
+
+extern void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable);
+
+#endif //NETDATA_API_FORMATTER_JSON_H
diff --git a/web/api/formatters/json_wrapper.c b/web/api/formatters/json_wrapper.c
new file mode 100644
index 000000000..253883568
--- /dev/null
+++ b/web/api/formatters/json_wrapper.c
@@ -0,0 +1,210 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "json_wrapper.h"
+
+void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value) {
+    rrdset_check_rdlock(r->st);
+
+    long rows = rrdr_rows(r);
+    long c, i;
+    RRDDIM *rd;
+
+    //info("JSONWRAPPER(): %s: BEGIN", r->st->id);
+    char kq[2] = "",                    // key quote
+            sq[2] = "";                     // string quote
+
+    if( options & RRDR_OPTION_GOOGLE_JSON ) {
+        kq[0] = '\0';
+        sq[0] = '\'';
+    }
+    else {
+        kq[0] = '"';
+        sq[0] = '"';
+    }
+
+    buffer_sprintf(wb, "{\n"
+                       "   %sapi%s: 1,\n"
+                       "   %sid%s: %s%s%s,\n"
+                       "   %sname%s: %s%s%s,\n"
+                       "   %sview_update_every%s: %d,\n"
+                       "   %supdate_every%s: %d,\n"
+                       "   %sfirst_entry%s: %u,\n"
+                       "   %slast_entry%s: %u,\n"
+                       "   %sbefore%s: %u,\n"
+                       "   %safter%s: %u,\n"
+                       "   %sdimension_names%s: ["
+                   , kq, kq
+                   , kq, kq, sq, r->st->id, sq
+                   , kq, kq, sq, r->st->name, sq
+                   , kq, kq, r->update_every
+                   , kq, kq, r->st->update_every
+                   , kq, kq, (uint32_t)rrdset_first_entry_t(r->st)
+                   , kq, kq, (uint32_t)rrdset_last_entry_t(r->st)
+                   , kq, kq, (uint32_t)r->before
+                   , kq, kq, (uint32_t)r->after
+                   , kq, kq);
+
+    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+        if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+        if(i) buffer_strcat(wb, ", ");
+        buffer_strcat(wb, sq);
+        buffer_strcat(wb, rd->name);
+        buffer_strcat(wb, sq);
+        i++;
+    }
+    if(!i) {
+#ifdef NETDATA_INTERNAL_CHECKS
+        error("RRDR is empty for %s (RRDR has %d dimensions, options is 0x%08x)", r->st->id, r->d, options);
+#endif
+        rows = 0;
+        buffer_strcat(wb, sq);
+        buffer_strcat(wb, "no data");
+        buffer_strcat(wb, sq);
+    }
+
+    buffer_sprintf(wb, "],\n"
+                       "   %sdimension_ids%s: ["
+                   , kq, kq);
+
+    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+        if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+        if(i) buffer_strcat(wb, ", ");
+        buffer_strcat(wb, sq);
+        buffer_strcat(wb, rd->id);
+        buffer_strcat(wb, sq);
+        i++;
+    }
+    if(!i) {
+        rows = 0;
+        buffer_strcat(wb, sq);
+        buffer_strcat(wb, "no data");
+        buffer_strcat(wb, sq);
+    }
+
+    buffer_sprintf(wb, "],\n"
+                       "   %slatest_values%s: ["
+                   , kq, kq);
+
+    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+        if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+        if(i) buffer_strcat(wb, ", ");
+        i++;
+
+        storage_number n = rd->values[rrdset_last_slot(r->st)];
+
+        if(!does_storage_number_exist(n))
+            buffer_strcat(wb, "null");
+        else
+            buffer_rrd_value(wb, unpack_storage_number(n));
+    }
+    if(!i) {
+        rows = 0;
+        buffer_strcat(wb, "null");
+    }
+
+    buffer_sprintf(wb, "],\n"
+                       "   %sview_latest_values%s: ["
+                   , kq, kq);
+
+    i = 0;
+    if(rows) {
+        calculated_number total = 1;
+
+        if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
+            total = 0;
+            for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+                calculated_number *cn = &r->v[ (rrdr_rows(r) - 1) * r->d ];
+                calculated_number n = cn[c];
+
+                if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+                    n = -n;
+
+                total += n;
+            }
+            // prevent a division by zero
+            if(total == 0) total = 1;
+        }
+
+        for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+            if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+            if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+            if(i) buffer_strcat(wb, ", ");
+            i++;
+
+            calculated_number *cn = &r->v[ (rrdr_rows(r) - 1) * r->d ];
+            RRDR_VALUE_FLAGS *co = &r->o[ (rrdr_rows(r) - 1) * r->d ];
+            calculated_number n = cn[c];
+
+            if(co[c] & RRDR_VALUE_EMPTY) {
+                if(options & RRDR_OPTION_NULL2ZERO)
+                    buffer_strcat(wb, "0");
+                else
+                    buffer_strcat(wb, "null");
+            }
+            else {
+                if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+                    n = -n;
+
+                if(unlikely(options & RRDR_OPTION_PERCENTAGE))
+                    n = n * 100 / total;
+
+                buffer_rrd_value(wb, n);
+            }
+        }
+    }
+    if(!i) {
+        rows = 0;
+        buffer_strcat(wb, "null");
+    }
+
+    buffer_sprintf(wb, "],\n"
+                       "   %sdimensions%s: %ld,\n"
+                       "   %spoints%s: %ld,\n"
+                       "   %sformat%s: %s"
+                   , kq, kq, i
+                   , kq, kq, rows
+                   , kq, kq, sq
+    );
+
+    rrdr_buffer_print_format(wb, format);
+
+    buffer_sprintf(wb, "%s,\n"
+                       "   %sresult%s: "
+                   , sq
+                   , kq, kq
+    );
+
+    if(string_value) buffer_strcat(wb, sq);
+    //info("JSONWRAPPER(): %s: END", r->st->id);
+}
+
+void rrdr_json_wrapper_end(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value) {
+    (void)format;
+
+    char kq[2] = "",                    // key quote
+            sq[2] = "";                     // string quote
+
+    if( options & RRDR_OPTION_GOOGLE_JSON ) {
+        kq[0] = '\0';
+        sq[0] = '\'';
+    }
+    else {
+        kq[0] = '"';
+        sq[0] = '"';
+    }
+
+    if(string_value) buffer_strcat(wb, sq);
+
+    buffer_sprintf(wb, ",\n %smin%s: ", kq, kq);
+    buffer_rrd_value(wb, r->min);
+    buffer_sprintf(wb, ",\n %smax%s: ", kq, kq);
+    buffer_rrd_value(wb, r->max);
+    buffer_strcat(wb, "\n}\n");
+}
diff --git a/web/api/formatters/json_wrapper.h b/web/api/formatters/json_wrapper.h
new file mode 100644
index 000000000..7cb7d3453
--- /dev/null
+++ b/web/api/formatters/json_wrapper.h
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_FORMATTER_JSON_WRAPPER_H
+#define NETDATA_API_FORMATTER_JSON_WRAPPER_H
+
+#include "rrd2json.h"
+
+extern void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value);
+extern void rrdr_json_wrapper_end(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value);
+
+#endif //NETDATA_API_FORMATTER_JSON_WRAPPER_H
diff --git a/web/api/formatters/rrd2json.c b/web/api/formatters/rrd2json.c
new file mode 100644
index 000000000..5cdcc80ff
--- /dev/null
+++ b/web/api/formatters/rrd2json.c
@@ -0,0 +1,298 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "web/api/web_api_v1.h"
+
+void rrd_stats_api_v1_chart(RRDSET *st, BUFFER *wb) {
+    rrdset2json(st, wb, NULL, NULL);
+}
+
+void rrdr_buffer_print_format(BUFFER *wb, uint32_t format)  {
+    switch(format) {
+        case DATASOURCE_JSON:
+            buffer_strcat(wb, DATASOURCE_FORMAT_JSON);
+            break;
+
+        case DATASOURCE_DATATABLE_JSON:
+            buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSON);
+            break;
+
+        case DATASOURCE_DATATABLE_JSONP:
+            buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSONP);
+            break;
+
+        case DATASOURCE_JSONP:
+            buffer_strcat(wb, DATASOURCE_FORMAT_JSONP);
+            break;
+
+        case DATASOURCE_SSV:
+            buffer_strcat(wb, DATASOURCE_FORMAT_SSV);
+            break;
+
+        case DATASOURCE_CSV:
+            buffer_strcat(wb, DATASOURCE_FORMAT_CSV);
+            break;
+
+        case DATASOURCE_TSV:
+            buffer_strcat(wb, DATASOURCE_FORMAT_TSV);
+            break;
+
+        case DATASOURCE_HTML:
+            buffer_strcat(wb, DATASOURCE_FORMAT_HTML);
+            break;
+
+        case DATASOURCE_JS_ARRAY:
+            buffer_strcat(wb, DATASOURCE_FORMAT_JS_ARRAY);
+            break;
+
+        case DATASOURCE_SSV_COMMA:
+            buffer_strcat(wb, DATASOURCE_FORMAT_SSV_COMMA);
+            break;
+
+        default:
+            buffer_strcat(wb, "unknown");
+            break;
+    }
+}
+
+int rrdset2value_api_v1(
+          RRDSET *st
+        , BUFFER *wb
+        , calculated_number *n
+        , const char *dimensions
+        , long points
+        , long long after
+        , long long before
+        , int group_method
+        , long group_time
+        , uint32_t options
+        , time_t *db_after
+        , time_t *db_before
+        , int *value_is_null
+) {
+    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, options, dimensions);
+    if(!r) {
+        if(value_is_null) *value_is_null = 1;
+        return 500;
+    }
+
+    if(rrdr_rows(r) == 0) {
+        rrdr_free(r);
+
+        if(db_after)  *db_after  = 0;
+        if(db_before) *db_before = 0;
+        if(value_is_null) *value_is_null = 1;
+
+        return 400;
+    }
+
+    if(wb) {
+        if (r->result_options & RRDR_RESULT_OPTION_RELATIVE)
+            buffer_no_cacheable(wb);
+        else if (r->result_options & RRDR_RESULT_OPTION_ABSOLUTE)
+            buffer_cacheable(wb);
+    }
+
+    if(db_after)  *db_after  = r->after;
+    if(db_before) *db_before = r->before;
+
+    long i = (!(options & RRDR_OPTION_REVERSED))?rrdr_rows(r) - 1:0;
+    *n = rrdr2value(r, i, options, value_is_null);
+
+    rrdr_free(r);
+    return 200;
+}
+
+int rrdset2anything_api_v1(
+          RRDSET *st
+        , BUFFER *wb
+        , BUFFER *dimensions
+        , uint32_t format
+        , long points
+        , long long after
+        , long long before
+        , int group_method
+        , long group_time
+        , uint32_t options
+        , time_t *latest_timestamp
+) {
+    st->last_accessed_time = now_realtime_sec();
+
+    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, options, dimensions?buffer_tostring(dimensions):NULL);
+    if(!r) {
+        buffer_strcat(wb, "Cannot generate output with these parameters on this chart.");
+        return 500;
+    }
+
+    if(r->result_options & RRDR_RESULT_OPTION_RELATIVE)
+        buffer_no_cacheable(wb);
+    else if(r->result_options & RRDR_RESULT_OPTION_ABSOLUTE)
+        buffer_cacheable(wb);
+
+    if(latest_timestamp && rrdr_rows(r) > 0)
+        *latest_timestamp = r->before;
+
+    switch(format) {
+    case DATASOURCE_SSV:
+        if(options & RRDR_OPTION_JSON_WRAP) {
+            wb->contenttype = CT_APPLICATION_JSON;
+            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr2ssv(r, wb, options, "", " ", "");
+            rrdr_json_wrapper_end(r, wb, format, options, 1);
+        }
+        else {
+            wb->contenttype = CT_TEXT_PLAIN;
+            rrdr2ssv(r, wb, options, "", " ", "");
+        }
+        break;
+
+    case DATASOURCE_SSV_COMMA:
+        if(options & RRDR_OPTION_JSON_WRAP) {
+            wb->contenttype = CT_APPLICATION_JSON;
+            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr2ssv(r, wb, options, "", ",", "");
+            rrdr_json_wrapper_end(r, wb, format, options, 1);
+        }
+        else {
+            wb->contenttype = CT_TEXT_PLAIN;
+            rrdr2ssv(r, wb, options, "", ",", "");
+        }
+        break;
+
+    case DATASOURCE_JS_ARRAY:
+        if(options & RRDR_OPTION_JSON_WRAP) {
+            wb->contenttype = CT_APPLICATION_JSON;
+            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr2ssv(r, wb, options, "[", ",", "]");
+            rrdr_json_wrapper_end(r, wb, format, options, 0);
+        }
+        else {
+            wb->contenttype = CT_APPLICATION_JSON;
+            rrdr2ssv(r, wb, options, "[", ",", "]");
+        }
+        break;
+
+    case DATASOURCE_CSV:
+        if(options & RRDR_OPTION_JSON_WRAP) {
+            wb->contenttype = CT_APPLICATION_JSON;
+            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr2csv(r, wb, format, options, "", ",", "\\n", "");
+            rrdr_json_wrapper_end(r, wb, format, options, 1);
+        }
+        else {
+            wb->contenttype = CT_TEXT_PLAIN;
+            rrdr2csv(r, wb, format, options, "", ",", "\r\n", "");
+        }
+        break;
+
+    case DATASOURCE_CSV_MARKDOWN:
+        if(options & RRDR_OPTION_JSON_WRAP) {
+            wb->contenttype = CT_APPLICATION_JSON;
+            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr2csv(r, wb, format, options, "", "|", "\\n", "");
+            rrdr_json_wrapper_end(r, wb, format, options, 1);
+        }
+        else {
+            wb->contenttype = CT_TEXT_PLAIN;
+            rrdr2csv(r, wb, format, options, "", "|", "\r\n", "");
+        }
+        break;
+
+    case DATASOURCE_CSV_JSON_ARRAY:
+        wb->contenttype = CT_APPLICATION_JSON;
+        if(options & RRDR_OPTION_JSON_WRAP) {
+            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            buffer_strcat(wb, "[\n");
+            rrdr2csv(r, wb, format, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
+            buffer_strcat(wb, "\n]");
+            rrdr_json_wrapper_end(r, wb, format, options, 0);
+        }
+        else {
+            wb->contenttype = CT_APPLICATION_JSON;
+            buffer_strcat(wb, "[\n");
+            rrdr2csv(r, wb, format, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
+            buffer_strcat(wb, "\n]");
+        }
+        break;
+
+    case DATASOURCE_TSV:
+        if(options & RRDR_OPTION_JSON_WRAP) {
+            wb->contenttype = CT_APPLICATION_JSON;
+            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr2csv(r, wb, format, options, "", "\t", "\\n", "");
+            rrdr_json_wrapper_end(r, wb, format, options, 1);
+        }
+        else {
+            wb->contenttype = CT_TEXT_PLAIN;
+            rrdr2csv(r, wb, format, options, "", "\t", "\r\n", "");
+        }
+        break;
+
+    case DATASOURCE_HTML:
+        if(options & RRDR_OPTION_JSON_WRAP) {
+            wb->contenttype = CT_APPLICATION_JSON;
+            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            buffer_strcat(wb, "<html>\\n<center>\\n<table border=\\\"0\\\" cellpadding=\\\"5\\\" cellspacing=\\\"5\\\">\\n");
+            rrdr2csv(r, wb, format, options, "<tr><td>", "</td><td>", "</td></tr>\\n", "");
+            buffer_strcat(wb, "</table>\\n</center>\\n</html>\\n");
+            rrdr_json_wrapper_end(r, wb, format, options, 1);
+        }
+        else {
+            wb->contenttype = CT_TEXT_HTML;
+            buffer_strcat(wb, "<html>\n<center>\n<table border=\"0\" cellpadding=\"5\" cellspacing=\"5\">\n");
+            rrdr2csv(r, wb, format, options, "<tr><td>", "</td><td>", "</td></tr>\n", "");
+            buffer_strcat(wb, "</table>\n</center>\n</html>\n");
+        }
+        break;
+
+    case DATASOURCE_DATATABLE_JSONP:
+        wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
+
+        if(options & RRDR_OPTION_JSON_WRAP)
+            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+
+        rrdr2json(r, wb, options, 1);
+
+        if(options & RRDR_OPTION_JSON_WRAP)
+            rrdr_json_wrapper_end(r, wb, format, options, 0);
+        break;
+
+    case DATASOURCE_DATATABLE_JSON:
+        wb->contenttype = CT_APPLICATION_JSON;
+
+        if(options & RRDR_OPTION_JSON_WRAP)
+            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+
+        rrdr2json(r, wb, options, 1);
+
+        if(options & RRDR_OPTION_JSON_WRAP)
+            rrdr_json_wrapper_end(r, wb, format, options, 0);
+        break;
+
+    case DATASOURCE_JSONP:
+        wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
+        if(options & RRDR_OPTION_JSON_WRAP)
+            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+
+        rrdr2json(r, wb, options, 0);
+
+        if(options & RRDR_OPTION_JSON_WRAP)
+            rrdr_json_wrapper_end(r, wb, format, options, 0);
+        break;
+
+    case DATASOURCE_JSON:
+    default:
+        wb->contenttype = CT_APPLICATION_JSON;
+
+        if(options & RRDR_OPTION_JSON_WRAP)
+            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+
+        rrdr2json(r, wb, options, 0);
+
+        if(options & RRDR_OPTION_JSON_WRAP)
+            rrdr_json_wrapper_end(r, wb, format, options, 0);
+        break;
+    }
+
+    rrdr_free(r);
+    return 200;
+}
diff --git a/web/api/formatters/rrd2json.h b/web/api/formatters/rrd2json.h
new file mode 100644
index 000000000..bac6130de
--- /dev/null
+++ b/web/api/formatters/rrd2json.h
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_RRD2JSON_H
+#define NETDATA_RRD2JSON_H 1
+
+#include "web/api/web_api_v1.h"
+#include "web/api/exporters/allmetrics.h"
+#include "web/api/queries/rrdr.h"
+
+#include "web/api/formatters/csv/csv.h"
+#include "web/api/formatters/ssv/ssv.h"
+#include "web/api/formatters/json/json.h"
+#include "web/api/formatters/value/value.h"
+
+#include "web/api/formatters/rrdset2json.h"
+#include "web/api/formatters/charts2json.h"
+#include "web/api/formatters/json_wrapper.h"
+
+#define HOSTNAME_MAX 1024
+
+#define API_RELATIVE_TIME_MAX (3 * 365 * 86400)
+
+// type of JSON generations
+#define DATASOURCE_INVALID (-1)
+#define DATASOURCE_JSON 0
+#define DATASOURCE_DATATABLE_JSON 1
+#define DATASOURCE_DATATABLE_JSONP 2
+#define DATASOURCE_SSV 3
+#define DATASOURCE_CSV 4
+#define DATASOURCE_JSONP 5
+#define DATASOURCE_TSV 6
+#define DATASOURCE_HTML 7
+#define DATASOURCE_JS_ARRAY 8
+#define DATASOURCE_SSV_COMMA 9
+#define DATASOURCE_CSV_JSON_ARRAY 10
+#define DATASOURCE_CSV_MARKDOWN 11
+
+#define DATASOURCE_FORMAT_JSON "json"
+#define DATASOURCE_FORMAT_DATATABLE_JSON "datatable"
+#define DATASOURCE_FORMAT_DATATABLE_JSONP "datasource"
+#define DATASOURCE_FORMAT_JSONP "jsonp"
+#define DATASOURCE_FORMAT_SSV "ssv"
+#define DATASOURCE_FORMAT_CSV "csv"
+#define DATASOURCE_FORMAT_TSV "tsv"
+#define DATASOURCE_FORMAT_HTML "html"
+#define DATASOURCE_FORMAT_JS_ARRAY "array"
+#define DATASOURCE_FORMAT_SSV_COMMA "ssvcomma"
+#define DATASOURCE_FORMAT_CSV_JSON_ARRAY "csvjsonarray"
+#define DATASOURCE_FORMAT_CSV_MARKDOWN "markdown"
+
+extern void rrd_stats_api_v1_chart(RRDSET *st, BUFFER *wb);
+extern void rrdr_buffer_print_format(BUFFER *wb, uint32_t format);
+
+extern int rrdset2anything_api_v1(
+          RRDSET *st
+        , BUFFER *wb
+        , BUFFER *dimensions
+        , uint32_t format
+        , long points
+        , long long after
+        , long long before
+        , int group_method
+        , long group_time
+        , uint32_t options
+        , time_t *latest_timestamp
+);
+
+extern int rrdset2value_api_v1(
+          RRDSET *st
+        , BUFFER *wb
+        , calculated_number *n
+        , const char *dimensions
+        , long points
+        , long long after
+        , long long before
+        , int group_method
+        , long group_time
+        , uint32_t options
+        , time_t *db_after
+        , time_t *db_before
+        , int *value_is_null
+);
+
+#endif /* NETDATA_RRD2JSON_H */
diff --git a/web/api/formatters/rrdset2json.c b/web/api/formatters/rrdset2json.c
new file mode 100644
index 000000000..6d57e34cf
--- /dev/null
+++ b/web/api/formatters/rrdset2json.c
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "rrdset2json.h"
+
+// generate JSON for the /api/v1/chart API call
+
+void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used) {
+    rrdset_rdlock(st);
+
+    buffer_sprintf(wb,
+            "\t\t{\n"
+            "\t\t\t\"id\": \"%s\",\n"
+            "\t\t\t\"name\": \"%s\",\n"
+            "\t\t\t\"type\": \"%s\",\n"
+            "\t\t\t\"family\": \"%s\",\n"
+            "\t\t\t\"context\": \"%s\",\n"
+            "\t\t\t\"title\": \"%s (%s)\",\n"
+            "\t\t\t\"priority\": %ld,\n"
+            "\t\t\t\"plugin\": \"%s\",\n"
+            "\t\t\t\"module\": \"%s\",\n"
+            "\t\t\t\"enabled\": %s,\n"
+            "\t\t\t\"units\": \"%s\",\n"
+            "\t\t\t\"data_url\": \"/api/v1/data?chart=%s\",\n"
+            "\t\t\t\"chart_type\": \"%s\",\n"
+            "\t\t\t\"duration\": %ld,\n"
+            "\t\t\t\"first_entry\": %ld,\n"
+            "\t\t\t\"last_entry\": %ld,\n"
+            "\t\t\t\"update_every\": %d,\n"
+            "\t\t\t\"dimensions\": {\n"
+                   , st->id
+                   , st->name
+                   , st->type
+                   , st->family
+                   , st->context
+                   , st->title, st->name
+                   , st->priority
+                   , st->plugin_name?st->plugin_name:""
+                   , st->module_name?st->module_name:""
+                   , rrdset_flag_check(st, RRDSET_FLAG_ENABLED)?"true":"false"
+                   , st->units
+                   , st->name
+                   , rrdset_type_name(st->chart_type)
+                   , st->entries * st->update_every
+                   , rrdset_first_entry_t(st)
+                   , rrdset_last_entry_t(st)
+                   , st->update_every
+    );
+
+    unsigned long memory = st->memsize;
+
+    size_t dimensions = 0;
+    RRDDIM *rd;
+    rrddim_foreach_read(rd, st) {
+        if(rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)) continue;
+
+        memory += rd->memsize;
+
+        buffer_sprintf(
+                wb
+                , "%s"
+                  "\t\t\t\t\"%s\": { \"name\": \"%s\" }"
+                , dimensions ? ",\n" : ""
+                , rd->id
+                , rd->name
+        );
+
+        dimensions++;
+    }
+
+    if(dimensions_count) *dimensions_count += dimensions;
+    if(memory_used) *memory_used += memory;
+
+    buffer_strcat(wb, "\n\t\t\t},\n\t\t\t\"green\": ");
+    buffer_rrd_value(wb, st->green);
+    buffer_strcat(wb, ",\n\t\t\t\"red\": ");
+    buffer_rrd_value(wb, st->red);
+
+    buffer_strcat(wb, ",\n\t\t\t\"alarms\": {\n");
+    size_t alarms = 0;
+    RRDCALC *rc;
+    for(rc = st->alarms; rc ; rc = rc->rrdset_next) {
+
+        buffer_sprintf(
+                wb
+                , "%s"
+                  "\t\t\t\t\"%s\": {\n"
+                  "\t\t\t\t\t\"id\": %u,\n"
+                  "\t\t\t\t\t\"status\": \"%s\",\n"
+                  "\t\t\t\t\t\"units\": \"%s\",\n"
+                  "\t\t\t\t\t\"update_every\": %d\n"
+                  "\t\t\t\t}"
+                , (alarms) ? ",\n" : ""
+                , rc->name
+                , rc->id
+                , rrdcalc_status2string(rc->status)
+                , rc->units
+                , rc->update_every
+        );
+
+        alarms++;
+    }
+
+    buffer_sprintf(wb,
+            "\n\t\t\t}\n\t\t}"
+    );
+
+    rrdset_unlock(st);
+}
diff --git a/web/api/formatters/rrdset2json.h b/web/api/formatters/rrdset2json.h
new file mode 100644
index 000000000..b2669ec0a
--- /dev/null
+++ b/web/api/formatters/rrdset2json.h
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_FORMATTER_RRDSET2JSON_H
+#define NETDATA_API_FORMATTER_RRDSET2JSON_H
+
+#include "rrd2json.h"
+
+extern void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used);
+
+#endif //NETDATA_API_FORMATTER_RRDSET2JSON_H
diff --git a/web/api/formatters/ssv/Makefile.am b/web/api/formatters/ssv/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/formatters/ssv/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/formatters/ssv/Makefile.in b/web/api/formatters/ssv/Makefile.in
new file mode 100644
index 000000000..c7c8c3fa9
--- /dev/null
+++ b/web/api/formatters/ssv/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+VPATH = @srcdir@
+am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+subdir = web/api/formatters/ssv
+DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
+	$(dist_noinst_DATA)
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diff --git a/web/api/formatters/ssv/README.md b/web/api/formatters/ssv/README.md
new file mode 100644
index 000000000..74f0d3189
--- /dev/null
+++ b/web/api/formatters/ssv/README.md
@@ -0,0 +1,52 @@
+# SSV formatter
+
+The SSV formatter sums all dimensions in [results of database queries](../../queries)
+to a single value and returns a list of such values showing how it changes through time.
+
+It supports the following formats:
+
+format|content type|description
+:---:|:---:|:-----
+`ssv`|text/plain|a space separated list of values
+`ssvcomma`|text/plain|a comma separated list of values
+`array`|application/json|a JSON array
+
+The CSV formatter respects the following API `&options=`:
+
+option|supported|description
+:---:|:---:|:---
+`nonzero`|yes|to return only the dimensions that have at least a non-zero value
+`flip`|yes|to return the numbers older to newer (the default is newer to older)
+`percent`|yes|to replace all values with their percentage over the row total
+`abs`|yes|to turn all values positive, before using them
+`min2max`|yes|to return the delta from the minimum value to the maximum value (across dimensions)
+
+## Examples
+
+Get the average system CPU utilization of the last hour, in 6 values (one every 10 minutes):
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=system.cpu&format=ssv&after=-3600&points=6&group=average'
+1.741352 1.6800467 1.769411 1.6761112 1.629862 1.6807968
+```
+
+---
+
+Get the total mysql bandwidth (in + out) for the last hour, in 6 values (one every 10 minutes):
+
+Netdata returns bandwidth in `kilobits`.
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=mysql_local.net&format=ssvcomma&after=-3600&points=6&group=sum&options=abs'
+72618.7936215,72618.778889,72618.788084,72618.9195918,72618.7760612,72618.6712421
+```
+
+---
+
+Get the web server max connections for the last hour, in 12 values (one every 5 minutes)
+in a JSON array:
+
+```bash
+# curl -Ss 'https://registry.my-netdata.io/api/v1/data?chart=nginx_local.connections&format=array&after=-3600&points=12&group=max'
+[278,258,268,239,259,260,243,266,278,318,264,258]
+```
diff --git a/web/api/formatters/ssv/ssv.c b/web/api/formatters/ssv/ssv.c
new file mode 100644
index 000000000..eeba0283d
--- /dev/null
+++ b/web/api/formatters/ssv/ssv.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "ssv.h"
+
+void rrdr2ssv(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, const char *prefix, const char *separator, const char *suffix) {
+    //info("RRD2SSV(): %s: BEGIN", r->st->id);
+    long i;
+
+    buffer_strcat(wb, prefix);
+    long start = 0, end = rrdr_rows(r), step = 1;
+    if(!(options & RRDR_OPTION_REVERSED)) {
+        start = rrdr_rows(r) - 1;
+        end = -1;
+        step = -1;
+    }
+
+    // for each line in the array
+    for(i = start; i != end ;i += step) {
+        int all_values_are_null = 0;
+        calculated_number v = rrdr2value(r, i, options, &all_values_are_null);
+
+        if(likely(i != start)) {
+            if(r->min > v) r->min = v;
+            if(r->max < v) r->max = v;
+        }
+        else {
+            r->min = v;
+            r->max = v;
+        }
+
+        if(likely(i != start))
+            buffer_strcat(wb, separator);
+
+        if(all_values_are_null) {
+            if(options & RRDR_OPTION_NULL2ZERO)
+                buffer_strcat(wb, "0");
+            else
+                buffer_strcat(wb, "null");
+        }
+        else
+            buffer_rrd_value(wb, v);
+    }
+    buffer_strcat(wb, suffix);
+    //info("RRD2SSV(): %s: END", r->st->id);
+}
diff --git a/web/api/formatters/ssv/ssv.h b/web/api/formatters/ssv/ssv.h
new file mode 100644
index 000000000..6963dcf6e
--- /dev/null
+++ b/web/api/formatters/ssv/ssv.h
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_FORMATTER_SSV_H
+#define NETDATA_API_FORMATTER_SSV_H
+
+#include "../rrd2json.h"
+
+extern void rrdr2ssv(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, const char *prefix, const char *separator, const char *suffix);
+
+#endif //NETDATA_API_FORMATTER_SSV_H
diff --git a/web/api/formatters/value/Makefile.am b/web/api/formatters/value/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/formatters/value/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/formatters/value/Makefile.in b/web/api/formatters/value/Makefile.in
new file mode 100644
index 000000000..eb0b2bddf
--- /dev/null
+++ b/web/api/formatters/value/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
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+	README.md \
+	$(NULL)
+
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
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+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
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+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu web/api/formatters/value/Makefile
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+	@case '$?' in \
+	  *config.status*) \
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diff --git a/web/api/formatters/value/README.md b/web/api/formatters/value/README.md
new file mode 100644
index 000000000..5024e74ee
--- /dev/null
+++ b/web/api/formatters/value/README.md
@@ -0,0 +1,17 @@
+# Value formatter
+
+The Value formatter presents [results of database queries](../../queries) as a single value.
+
+To calculate the single value to be returned, it sums the values of all dimensions.
+
+The Value formatter respects the following API `&options=`:
+
+option|supported|description
+:---:|:---:|:---
+`percent`|yes|to replace all values with their percentage over the row total
+`abs`|yes|to turn all values positive, before using them
+`min2max`|yes|to return the delta from the minimum value to the maximum value (across dimensions)
+
+The Value formatter is not exposed by the API by itself.
+Instead it is used by the [`ssv`](../ssv) formatter
+and [health monitoring queries](../../../../health).
diff --git a/web/api/formatters/value/value.c b/web/api/formatters/value/value.c
new file mode 100644
index 000000000..aea6c162b
--- /dev/null
+++ b/web/api/formatters/value/value.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "value.h"
+
+
+inline calculated_number rrdr2value(RRDR *r, long i, RRDR_OPTIONS options, int *all_values_are_null) {
+    rrdset_check_rdlock(r->st);
+
+    long c;
+    RRDDIM *d;
+
+    calculated_number *cn = &r->v[ i * r->d ];
+    RRDR_VALUE_FLAGS *co = &r->o[ i * r->d ];
+
+    calculated_number sum = 0, min = 0, max = 0, v;
+    int all_null = 1, init = 1;
+
+    calculated_number total = 1;
+    int set_min_max = 0;
+    if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
+        total = 0;
+        for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+            calculated_number n = cn[c];
+
+            if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+                n = -n;
+
+            total += n;
+        }
+        // prevent a division by zero
+        if(total == 0) total = 1;
+        set_min_max = 1;
+    }
+
+    // for each dimension
+    for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+        if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+        calculated_number n = cn[c];
+
+        if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+            n = -n;
+
+        if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
+            n = n * 100 / total;
+
+            if(unlikely(set_min_max)) {
+                r->min = r->max = n;
+                set_min_max = 0;
+            }
+
+            if(n < r->min) r->min = n;
+            if(n > r->max) r->max = n;
+        }
+
+        if(unlikely(init)) {
+            if(n > 0) {
+                min = 0;
+                max = n;
+            }
+            else {
+                min = n;
+                max = 0;
+            }
+            init = 0;
+        }
+
+        if(likely(!(co[c] & RRDR_VALUE_EMPTY))) {
+            all_null = 0;
+            sum += n;
+        }
+
+        if(n < min) min = n;
+        if(n > max) max = n;
+    }
+
+    if(unlikely(all_null)) {
+        if(likely(all_values_are_null))
+            *all_values_are_null = 1;
+        return 0;
+    }
+    else {
+        if(likely(all_values_are_null))
+            *all_values_are_null = 0;
+    }
+
+    if(options & RRDR_OPTION_MIN2MAX)
+        v = max - min;
+    else
+        v = sum;
+
+    return v;
+}
diff --git a/web/api/formatters/value/value.h b/web/api/formatters/value/value.h
new file mode 100644
index 000000000..d9e981f88
--- /dev/null
+++ b/web/api/formatters/value/value.h
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_FORMATTER_VALUE_H
+#define NETDATA_API_FORMATTER_VALUE_H
+
+#include "../rrd2json.h"
+
+extern calculated_number rrdr2value(RRDR *r, long i, RRDR_OPTIONS options, int *all_values_are_null);
+
+#endif //NETDATA_API_FORMATTER_VALUE_H
diff --git a/web/netdata-swagger.json b/web/api/netdata-swagger.json
index 768b6fd38..8ee1a8a72 100644
--- a/web/netdata-swagger.json
+++ b/web/api/netdata-swagger.json
@@ -2,11 +2,12 @@
   "swagger": "2.0",
   "info": {
     "title": "NetData API",
-    "description": "Real time data collection and graphs...",
+    "description": "Real-time performance and health monitoring.",
     "version": "1.9.11_rolling"
   },
   "host": "registry.my-netdata.io",
   "schemes": [
+    "https",
     "http"
   ],
   "basePath": "/api/v1",
@@ -126,6 +127,8 @@
               "min",
               "max",
               "average",
+              "median",
+              "stddev",
               "sum",
               "incremental-sum"
             ],
@@ -159,6 +162,7 @@
               "datatable",
               "datasource",
               "html",
+              "markdown",
               "array",
               "csvjsonarray"
             ],
@@ -309,6 +313,8 @@
               "min",
               "max",
               "average",
+              "median",
+              "stddev",
               "sum",
               "incremental-sum"
             ],
diff --git a/web/netdata-swagger.yaml b/web/api/netdata-swagger.yaml
index a8abe1abf..58f19198f 100644
--- a/web/netdata-swagger.yaml
+++ b/web/api/netdata-swagger.yaml
@@ -1,10 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 swagger: '2.0'
 info:
   title: NetData API
-  description: 'Real time data collection and graphs...'
-  version: 1.9.11_rolling
+  description: 'Real-time performance and health monitoring.'
+  version: 1.11.0_rolling
 host: registry.my-netdata.io
 schemes:
+  - https
   - http
 basePath: /api/v1
 produces:
@@ -92,7 +94,7 @@ paths:
           description: 'The grouping method. If multiple collected values are to be grouped in order to return fewer points, this parameters defines the method of grouping. methods supported "min", "max", "average", "sum", "incremental-sum". "max" is actually calculated on the absolute value collected (so it works for both positive and negative dimesions to return the most extreme value in either direction).'
           required: true
           type: string
-          enum: [ 'min', 'max', 'average', 'sum', 'incremental-sum' ]
+          enum: [ 'min', 'max', 'average', 'median', 'stddev', 'sum', 'incremental-sum' ]
           default: 'average'
           allowEmptyValue: false
         - name: gtime
@@ -108,7 +110,7 @@ paths:
           description: 'The format of the data to be returned.'
           required: true
           type: string
-          enum: [ 'json', 'jsonp', 'csv', 'tsv', 'tsv-excel', 'ssv', 'ssvcomma', 'datatable', 'datasource', 'html', 'array', 'csvjsonarray' ]
+          enum: [ 'json', 'jsonp', 'csv', 'tsv', 'tsv-excel', 'ssv', 'ssvcomma', 'datatable', 'datasource', 'html', 'markdown', 'array', 'csvjsonarray' ]
           default: json
           allowEmptyValue: false
         - name: options
@@ -202,7 +204,7 @@ paths:
           description: 'The grouping method. If multiple collected values are to be grouped in order to return fewer points, this parameters defines the method of grouping. methods are supported "min", "max", "average", "sum", "incremental-sum". "max" is actually calculated on the absolute value collected (so it works for both positive and negative dimesions to return the most extreme value in either direction).'
           required: true
           type: string
-          enum: [ 'min', 'max', 'average', 'sum', 'incremental-sum' ]
+          enum: [ 'min', 'max', 'average', 'median', 'stddev', 'sum', 'incremental-sum' ]
           default: 'average'
           allowEmptyValue: false
         - name: options
diff --git a/web/api/queries/Makefile.am b/web/api/queries/Makefile.am
new file mode 100644
index 000000000..008dbfeb8
--- /dev/null
+++ b/web/api/queries/Makefile.am
@@ -0,0 +1,20 @@
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+
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+
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+    des \
+    incremental_sum \
+    max \
+    min \
+    sum \
+    median \
+    ses \
+    stddev \
+    $(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/queries/Makefile.in b/web/api/queries/Makefile.in
new file mode 100644
index 000000000..295870d2c
--- /dev/null
+++ b/web/api/queries/Makefile.in
@@ -0,0 +1,656 @@
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diff --git a/web/api/queries/README.md b/web/api/queries/README.md
new file mode 100644
index 000000000..7a517d26e
--- /dev/null
+++ b/web/api/queries/README.md
@@ -0,0 +1,128 @@
+# Database Queries
+
+Netdata database can be queried with `/api/v1/data` and `/api/v1/badge.svg` REST API methods.
+
+Every data query accepts the following parameters:
+
+name|required|description
+:----:|:----:|:---
+`chart`|yes|The chart to be queried.
+`points`|no|The number of points to be returned. Netdata can reduce number of points by applying query grouping methods. If not given, the result will have the same granularity as the database (although this relates to `gtime`).
+`before`|no|The absolute timestamp or the relative (to now) time the query should finish evaluating data. If not given, it defaults to the timestamp of the latest point in the database.
+`after`|no|The absolute timestamp or the relative (to `before`) time the query should start evaluating data. if not given, it defaults to the timestamp of the oldest point in the database.
+`group`|no|The grouping method to use when reducing the points the database has. If not given, it defaults to `average`.
+`gtime`|no|A resampling period to change the units of the metrics (i.e. setting this to `60` will convert `per second` metrics to `per minute`. If not given it defaults to granularity of the database.
+`options`|no|A bitmap of options that can affect the operation of the query. Only 2 options are used by the query engine: `unaligned` and `percentage`. All the other options are used by the output formatters. The default is to return aligned data.
+`dimensions`|no|A simple pattern to filter the dimensions to be queried. The default is to return all the dimensions of the chart.
+
+## Operation
+
+The query engine works as follows (in this order):
+
+#### Time-frame
+
+`after` and `before` define a time-frame, accepting:
+
+- **absolute timestamps** (unix timestamps, i.e. seconds since epoch).
+
+- **relative timestamps**:
+
+  `before` is relative to now and `after` is relative to `before`.
+  
+  Example: `before=-60&after=-60` evaluates to the time-frame from -120 up to -60 seconds in
+  the past, relative to the latest entry of the database of the chart. 
+
+The engine verifies that the time-frame requested is available at the database:
+
+- If the requested time-frame overlaps with the database, the excess requested
+   will be truncated.
+   
+- If the requested time-frame does not overlap with the database, the engine will
+   return an empty data set.
+
+At the end of this operation, `after` and `before` are absolute timestamps.
+
+#### Data grouping
+
+Database points grouping is applied when the caller requests a time-frame to be
+expressed with fewer points, compared to what is available at the database.
+
+There are 2 uses that enable this feature:
+
+- The caller requests a specific number of `points` to be returned.
+  
+  For example, for a time-frame of 10 minutes, the database has 600 points (1/sec),
+  while the caller requested these 10 minutes to be expressed in 200 points.
+  
+  This feature is used by netdata dashboards when you zoom-out the charts.
+  The dashboard is requesting the number of points the user's screen has.
+  This saves bandwidth and speeds up the browser (fewer points to evaluate for drawing the charts).
+  
+- The caller requests a **re-sampling** of the database, by setting `gtime` to any value
+  above the granularity of the chart.
+  
+  For example, the chart's units is `requests/sec` and caller wants `requests/min`.
+  
+Using `points` and `gtime` the query engine tries to find a best fit for **database-points**
+vs **result-points** (we call this ratio `group points`). It always tries to keep `group points`
+an integer. Keep in mind the query engine may shift `after` if required.
+
+#### Time-frame Alignment
+
+Alignment is a very important aspect of netdata queries. Without it, the animated
+charts on the dashboards would constantly change shape during incremental updates.
+
+To provide consistent grouping through time, the query engine (by default) aligns
+`after` and `before` to be a multiple of `group points`.
+
+For example, if `group points` is 60 and alignment is enabled, the engine will return
+each point with durations XX:XX:00 - XX:XX:59, matching whole minutes.
+
+To disable alignment, pass `&options=unaligned` to the query.
+   
+#### Query Execution
+
+To execute the query, the engine evaluates all dimensions of the chart, one after another.
+
+The engine does not evaluate dimensions that do not match the [simple pattern](../../../libnetdata/simple_pattern)
+given at the `dimensions` parameter, except when `options=percentage` is given (this option
+requires all the dimensions to be evaluated to find the percentage of each dimension vs to chart
+total).
+
+For each dimension, it starts evaluating values starting at `after` (not inclusive) towards
+`before` (inclusive).
+
+For each value it calls the **grouping method** given with the `&group=` query parameter
+(the default is `average`).
+
+## Grouping methods
+
+The following grouping methods are supported. These are given all the values in the time-frame
+and they group the values every `group points`.
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min&value_color=blue) finds the minimum value
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max&value_color=lightblue) finds the maximum value
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=yellow) finds the average value
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=sum&after=-60&label=sum&units=requests&value_color=orange) adds all the values and returns the sum
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=median&after=-60&label=median&value_color=red) sorts the values and returns the value in the middle of the list
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=stddev&after=-60&label=stddev&value_color=green) finds the standard deviation of the values
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=cv&after=-60&label=cv&units=pcent&value_color=yellow) finds the relative standard deviation (coefficient of variation) of the values
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=ses&after=-60&label=ses&value_color=brown) finds the exponential weighted moving average of the values
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=des&after=-60&label=des&value_color=blue) applies Holt-Winters double exponential smoothing
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=incremental_sum&after=-60&label=incremental_sum&value_color=red) finds the difference of the last vs the first value
+
+The examples shown above, are live information from the `successful` web requests of the global netdata registry.
+
+## Further processing
+
+The result of the query engine is always a structure that has dimensions and values
+for each dimension.
+
+Formatting modules are then used to convert this result in many different formats and return it
+to the caller.
+
+## Performance
+
+The query engine is highly optimized for speed. Most of its modules implement "online"
+versions of the algorithms, requiring just one pass on the database values to produce
+the result.
diff --git a/web/api/queries/average/Makefile.am b/web/api/queries/average/Makefile.am
new file mode 100644
index 000000000..19554bed8
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diff --git a/web/api/queries/average/Makefile.in b/web/api/queries/average/Makefile.in
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index 000000000..a5db03648
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diff --git a/web/api/queries/average/README.md b/web/api/queries/average/README.md
new file mode 100644
index 000000000..3be434f68
--- /dev/null
+++ b/web/api/queries/average/README.md
@@ -0,0 +1,39 @@
+# Average or Mean
+
+> This query is available as `average` and `mean`.
+
+An average is a single number taken as representative of a list of numbers.
+
+It is calculated as:
+
+```
+average = sum(numbers) / count(numbers)
+```
+
+## how to use
+
+Use it in alarms like this:
+
+```
+ alarm: my_alarm
+    on: my_chart
+lookup: average -1m unaligned of my_dimension
+  warn: $this > 1000
+```
+
+`average` does not change the units. For example, if the chart units is `requests/sec`, the result
+will be again expressed in the same units. 
+
+It can also be used in APIs and badges as `&group=average` in the URL.
+
+## Examples
+
+Examining last 1 minute `successful` web server responses:
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+
+## References
+
+- [https://en.wikipedia.org/wiki/Average](https://en.wikipedia.org/wiki/Average).
diff --git a/web/api/queries/average/average.c b/web/api/queries/average/average.c
new file mode 100644
index 000000000..c871b8778
--- /dev/null
+++ b/web/api/queries/average/average.c
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "average.h"
+
+// ----------------------------------------------------------------------------
+// average
+
+struct grouping_average {
+    calculated_number sum;
+    size_t count;
+};
+
+void *grouping_create_average(RRDR *r) {
+    (void)r;
+    return callocz(1, sizeof(struct grouping_average));
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+void grouping_reset_average(RRDR *r) {
+    struct grouping_average *g = (struct grouping_average *)r->internal.grouping_data;
+    g->sum = 0;
+    g->count = 0;
+}
+
+void grouping_free_average(RRDR *r) {
+    freez(r->internal.grouping_data);
+    r->internal.grouping_data = NULL;
+}
+
+void grouping_add_average(RRDR *r, calculated_number value) {
+    if(!isnan(value)) {
+        struct grouping_average *g = (struct grouping_average *)r->internal.grouping_data;
+        g->sum += value;
+        g->count++;
+    }
+}
+
+calculated_number grouping_flush_average(RRDR *r,  RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_average *g = (struct grouping_average *)r->internal.grouping_data;
+
+    calculated_number value;
+
+    if(unlikely(!g->count)) {
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+    else {
+        if(unlikely(r->internal.resampling_group != 1))
+            value = g->sum / r->internal.resampling_divisor;
+        else
+            value = g->sum / g->count;
+    }
+
+    g->sum = 0.0;
+    g->count = 0;
+
+    return value;
+}
diff --git a/web/api/queries/average/average.h b/web/api/queries/average/average.h
new file mode 100644
index 000000000..9fb7de21a
--- /dev/null
+++ b/web/api/queries/average/average.h
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_QUERY_AVERAGE_H
+#define NETDATA_API_QUERY_AVERAGE_H
+
+#include "../query.h"
+#include "../rrdr.h"
+
+extern void *grouping_create_average(RRDR *r);
+extern void grouping_reset_average(RRDR *r);
+extern void grouping_free_average(RRDR *r);
+extern void grouping_add_average(RRDR *r, calculated_number value);
+extern calculated_number grouping_flush_average(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+
+#endif //NETDATA_API_QUERY_AVERAGE_H
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new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/queries/des/Makefile.am
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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diff --git a/web/api/queries/des/README.md b/web/api/queries/des/README.md
new file mode 100644
index 000000000..fa546a338
--- /dev/null
+++ b/web/api/queries/des/README.md
@@ -0,0 +1,66 @@
+# double exponential smoothing
+
+Exponential smoothing is one of many window functions commonly applied to smooth data in signal
+processing, acting as low-pass filters to remove high frequency noise.
+
+Simple exponential smoothing does not do well when there is a trend in the data.
+In such situations, several methods were devised under the name "double exponential smoothing"
+or "second-order exponential smoothing.", which is the recursive application of an exponential
+filter twice, thus being termed "double exponential smoothing".
+
+In simple terms, this is like an average value, but more recent values are given more weight
+and the trend of the values influences significantly the result.
+
+> **IMPORTANT**
+>
+> It is common for `des` to provide "average" values that far beyond the minimum or the maximum
+> values found in the time-series.
+> `des` estimates these values because of it takes into account the trend.
+
+This module implements the "Holt-Winters double exponential smoothing".
+
+Netdata automatically adjusts the weight (`alpha`) and the trend (`beta`) based on the number
+of values processed, using the formula:
+
+```
+window = max(number of values, 15)
+alpha  = 2 / (window + 1)
+beta   = 2 / (window + 1)
+```
+
+You can change the fixed value `15` by setting in `netdata.conf`:
+
+```
+[web]
+   des max window = 15
+```
+
+## how to use
+
+Use it in alarms like this:
+
+```
+ alarm: my_alarm
+    on: my_chart
+lookup: des -1m unaligned of my_dimension
+  warn: $this > 1000
+```
+
+`des` does not change the units. For example, if the chart units is `requests/sec`, the result
+will be again expressed in the same units. 
+
+It can also be used in APIs and badges as `&group=des` in the URL.
+
+## Examples
+
+Examining last 1 minute `successful` web server responses:
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=ses&after=-60&label=single+exponential+smoothing&value_color=yellow)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=des&after=-60&label=double+exponential+smoothing&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+
+## References
+
+- [https://en.wikipedia.org/wiki/Exponential_smoothing](https://en.wikipedia.org/wiki/Exponential_smoothing).
diff --git a/web/api/queries/des/des.c b/web/api/queries/des/des.c
new file mode 100644
index 000000000..93d724723
--- /dev/null
+++ b/web/api/queries/des/des.c
@@ -0,0 +1,139 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include <web/api/queries/rrdr.h>
+#include "des.h"
+
+
+// ----------------------------------------------------------------------------
+// single exponential smoothing
+
+struct grouping_des {
+    calculated_number alpha;
+    calculated_number alpha_other;
+    calculated_number beta;
+    calculated_number beta_other;
+
+    calculated_number level;
+    calculated_number trend;
+
+    size_t count;
+};
+
+static size_t max_window_size = 15;
+
+void grouping_init_des(void) {
+    long long ret = config_get_number(CONFIG_SECTION_WEB, "des max window", (long long)max_window_size);
+    if(ret <= 1) {
+        config_set_number(CONFIG_SECTION_WEB, "des max window", (long long)max_window_size);
+    }
+    else {
+        max_window_size = (size_t) ret;
+    }
+}
+
+static inline calculated_number window(RRDR *r, struct grouping_des *g) {
+    (void)g;
+
+    calculated_number points;
+    if(r->group == 1) {
+        // provide a running DES
+        points = r->internal.points_wanted;
+    }
+    else {
+        // provide a SES with flush points
+        points = r->group;
+    }
+
+    // https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
+    // A commonly used value for alpha is 2 / (N + 1)
+    return (points > max_window_size) ? max_window_size : points;
+}
+
+static inline void set_alpha(RRDR *r, struct grouping_des *g) {
+    // https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
+    // A commonly used value for alpha is 2 / (N + 1)
+
+    g->alpha = 2.0 / (window(r, g) + 1.0);
+    g->alpha_other = 1.0 - g->alpha;
+
+    //info("alpha for chart '%s' is " CALCULATED_NUMBER_FORMAT, r->st->name, g->alpha);
+}
+
+static inline void set_beta(RRDR *r, struct grouping_des *g) {
+    // https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
+    // A commonly used value for alpha is 2 / (N + 1)
+
+    g->beta = 2.0 / (window(r, g) + 1.0);
+    g->beta_other = 1.0 - g->beta;
+
+    //info("beta for chart '%s' is " CALCULATED_NUMBER_FORMAT, r->st->name, g->beta);
+}
+
+void *grouping_create_des(RRDR *r) {
+    struct grouping_des *g = (struct grouping_des *)malloc(sizeof(struct grouping_des));
+    set_alpha(r, g);
+    set_beta(r, g);
+    g->level = 0.0;
+    g->trend = 0.0;
+    g->count = 0;
+    return g;
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+void grouping_reset_des(RRDR *r) {
+    struct grouping_des *g = (struct grouping_des *)r->internal.grouping_data;
+    g->level = 0.0;
+    g->trend = 0.0;
+    g->count = 0;
+
+    // fprintf(stderr, "\nDES: ");
+
+}
+
+void grouping_free_des(RRDR *r) {
+    freez(r->internal.grouping_data);
+    r->internal.grouping_data = NULL;
+}
+
+void grouping_add_des(RRDR *r, calculated_number value) {
+    struct grouping_des *g = (struct grouping_des *)r->internal.grouping_data;
+
+    if(isnormal(value)) {
+        if(likely(g->count > 0)) {
+            // we have at least a number so far
+
+            if(unlikely(g->count == 1)) {
+                // the second value we got
+                g->trend = value - g->trend;
+                g->level = value;
+            }
+
+            // for the values, except the first
+            calculated_number last_level = g->level;
+            g->level = (g->alpha * value) + (g->alpha_other * (g->level + g->trend));
+            g->trend = (g->beta * (g->level - last_level)) + (g->beta_other * g->trend);
+        }
+        else {
+            // the first value we got
+            g->level = g->trend = value;
+        }
+
+        g->count++;
+    }
+
+    //fprintf(stderr, "value: " CALCULATED_NUMBER_FORMAT ", level: " CALCULATED_NUMBER_FORMAT ", trend: " CALCULATED_NUMBER_FORMAT "\n", value, g->level, g->trend);
+}
+
+calculated_number grouping_flush_des(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_des *g = (struct grouping_des *)r->internal.grouping_data;
+
+    if(unlikely(!g->count || !isnormal(g->level))) {
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+        return 0.0;
+    }
+
+    //fprintf(stderr, " RESULT for %zu values = " CALCULATED_NUMBER_FORMAT " \n", g->count, g->level);
+
+    return g->level;
+}
diff --git a/web/api/queries/des/des.h b/web/api/queries/des/des.h
new file mode 100644
index 000000000..360513e9c
--- /dev/null
+++ b/web/api/queries/des/des.h
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_QUERIES_DES_H
+#define NETDATA_API_QUERIES_DES_H
+
+#include "../query.h"
+#include "../rrdr.h"
+
+extern void grouping_init_des(void);
+
+extern void *grouping_create_des(RRDR *r);
+extern void grouping_reset_des(RRDR *r);
+extern void grouping_free_des(RRDR *r);
+extern void grouping_add_des(RRDR *r, calculated_number value);
+extern calculated_number grouping_flush_des(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+
+#endif //NETDATA_API_QUERIES_DES_H
diff --git a/web/api/queries/incremental_sum/Makefile.am b/web/api/queries/incremental_sum/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/queries/incremental_sum/Makefile.am
@@ -0,0 +1,8 @@
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+
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+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/queries/incremental_sum/Makefile.in b/web/api/queries/incremental_sum/Makefile.in
new file mode 100644
index 000000000..1863466fe
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diff --git a/web/api/queries/incremental_sum/README.md b/web/api/queries/incremental_sum/README.md
new file mode 100644
index 000000000..ef86d4d41
--- /dev/null
+++ b/web/api/queries/incremental_sum/README.md
@@ -0,0 +1,34 @@
+# Incremental Sum (`incremental_sum`)
+
+This modules finds the incremental sum of a period, which `last value - first value`.
+
+The result may be positive (rising) or negative (falling) depending on the first and last values.
+
+## how to use
+
+Use it in alarms like this:
+
+```
+ alarm: my_alarm
+    on: my_chart
+lookup: incremental_sum -1m unaligned of my_dimension
+  warn: $this > 1000
+```
+
+`incremental_sum` does not change the units. For example, if the chart units is `requests/sec`, the result
+will be again expressed in the same units. 
+
+It can also be used in APIs and badges as `&group=incremental_sum` in the URL.
+
+## Examples
+
+Examining last 1 minute `successful` web server responses:
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=incremental_sum&after=-60&label=incremental+sum&value_color=orange)
+
+## References
+
+- none
diff --git a/web/api/queries/incremental_sum/incremental_sum.c b/web/api/queries/incremental_sum/incremental_sum.c
new file mode 100644
index 000000000..131d85d78
--- /dev/null
+++ b/web/api/queries/incremental_sum/incremental_sum.c
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "incremental_sum.h"
+
+// ----------------------------------------------------------------------------
+// incremental sum
+
+struct grouping_incremental_sum {
+    calculated_number first;
+    calculated_number last;
+    size_t count;
+};
+
+void *grouping_create_incremental_sum(RRDR *r) {
+    (void)r;
+    return callocz(1, sizeof(struct grouping_incremental_sum));
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+void grouping_reset_incremental_sum(RRDR *r) {
+    struct grouping_incremental_sum *g = (struct grouping_incremental_sum *)r->internal.grouping_data;
+    g->first = 0;
+    g->last = 0;
+    g->count = 0;
+}
+
+void grouping_free_incremental_sum(RRDR *r) {
+    freez(r->internal.grouping_data);
+    r->internal.grouping_data = NULL;
+}
+
+void grouping_add_incremental_sum(RRDR *r, calculated_number value) {
+    if(!isnan(value)) {
+        struct grouping_incremental_sum *g = (struct grouping_incremental_sum *)r->internal.grouping_data;
+
+        if(unlikely(!g->count)) {
+            g->first = value;
+            g->count++;
+        }
+        else {
+            g->last = value;
+            g->count++;
+        }
+    }
+}
+
+calculated_number grouping_flush_incremental_sum(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_incremental_sum *g = (struct grouping_incremental_sum *)r->internal.grouping_data;
+
+    calculated_number value;
+
+    if(unlikely(!g->count)) {
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+    else if(unlikely(g->count == 1)) {
+        value = 0.0;
+    }
+    else {
+        value = g->last - g->first;
+    }
+
+    g->first = 0.0;
+    g->last = 0.0;
+    g->count = 0;
+
+    return value;
+}
diff --git a/web/api/queries/incremental_sum/incremental_sum.h b/web/api/queries/incremental_sum/incremental_sum.h
new file mode 100644
index 000000000..990a2ac4a
--- /dev/null
+++ b/web/api/queries/incremental_sum/incremental_sum.h
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_QUERY_INCREMENTAL_SUM_H
+#define NETDATA_API_QUERY_INCREMENTAL_SUM_H
+
+#include "../query.h"
+#include "../rrdr.h"
+
+extern void *grouping_create_incremental_sum(RRDR *r);
+extern void grouping_reset_incremental_sum(RRDR *r);
+extern void grouping_free_incremental_sum(RRDR *r);
+extern void grouping_add_incremental_sum(RRDR *r, calculated_number value);
+extern calculated_number grouping_flush_incremental_sum(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+
+#endif //NETDATA_API_QUERY_INCREMENTAL_SUM_H
diff --git a/web/api/queries/max/Makefile.am b/web/api/queries/max/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/queries/max/Makefile.am
@@ -0,0 +1,8 @@
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+
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+
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diff --git a/web/api/queries/max/Makefile.in b/web/api/queries/max/Makefile.in
new file mode 100644
index 000000000..f8475ad62
--- /dev/null
+++ b/web/api/queries/max/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/web/api/queries/max/README.md b/web/api/queries/max/README.md
new file mode 100644
index 000000000..2ea14bf0b
--- /dev/null
+++ b/web/api/queries/max/README.md
@@ -0,0 +1,31 @@
+# Max
+
+This module finds the max value in the time-frame given.
+
+## how to use
+
+Use it in alarms like this:
+
+```
+ alarm: my_alarm
+    on: my_chart
+lookup: max -1m unaligned of my_dimension
+  warn: $this > 1000
+```
+
+`max` does not change the units. For example, if the chart units is `requests/sec`, the result
+will be again expressed in the same units. 
+
+It can also be used in APIs and badges as `&group=max` in the URL.
+
+## Examples
+
+Examining last 1 minute `successful` web server responses:
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max&value_color=orange)
+
+## References
+
+- [https://en.wikipedia.org/wiki/Sample_maximum_and_minimum](https://en.wikipedia.org/wiki/Sample_maximum_and_minimum).
diff --git a/web/api/queries/max/max.c b/web/api/queries/max/max.c
new file mode 100644
index 000000000..a4be36add
--- /dev/null
+++ b/web/api/queries/max/max.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "max.h"
+
+// ----------------------------------------------------------------------------
+// max
+
+struct grouping_max {
+    calculated_number max;
+    size_t count;
+};
+
+void *grouping_create_max(RRDR *r) {
+    (void)r;
+    return callocz(1, sizeof(struct grouping_max));
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+void grouping_reset_max(RRDR *r) {
+    struct grouping_max *g = (struct grouping_max *)r->internal.grouping_data;
+    g->max = 0;
+    g->count = 0;
+}
+
+void grouping_free_max(RRDR *r) {
+    freez(r->internal.grouping_data);
+    r->internal.grouping_data = NULL;
+}
+
+void grouping_add_max(RRDR *r, calculated_number value) {
+    if(!isnan(value)) {
+        struct grouping_max *g = (struct grouping_max *)r->internal.grouping_data;
+
+        if(!g->count || calculated_number_fabs(value) > calculated_number_fabs(g->max)) {
+            g->max = value;
+            g->count++;
+        }
+    }
+}
+
+calculated_number grouping_flush_max(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_max *g = (struct grouping_max *)r->internal.grouping_data;
+
+    calculated_number value;
+
+    if(unlikely(!g->count)) {
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+    else {
+        value = g->max;
+    }
+
+    g->max = 0.0;
+    g->count = 0;
+
+    return value;
+}
+
diff --git a/web/api/queries/max/max.h b/web/api/queries/max/max.h
new file mode 100644
index 000000000..d839fe3f9
--- /dev/null
+++ b/web/api/queries/max/max.h
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_QUERY_MAX_H
+#define NETDATA_API_QUERY_MAX_H
+
+#include "../query.h"
+#include "../rrdr.h"
+
+extern void *grouping_create_max(RRDR *r);
+extern void grouping_reset_max(RRDR *r);
+extern void grouping_free_max(RRDR *r);
+extern void grouping_add_max(RRDR *r, calculated_number value);
+extern calculated_number grouping_flush_max(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+
+#endif //NETDATA_API_QUERY_MAX_H
diff --git a/web/api/queries/median/Makefile.am b/web/api/queries/median/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/queries/median/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/queries/median/Makefile.in b/web/api/queries/median/Makefile.in
new file mode 100644
index 000000000..f6d471bdf
--- /dev/null
+++ b/web/api/queries/median/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/web/api/queries/median/README.md b/web/api/queries/median/README.md
new file mode 100644
index 000000000..eb2dbaa96
--- /dev/null
+++ b/web/api/queries/median/README.md
@@ -0,0 +1,37 @@
+# Median
+
+The median is the value separating the higher half from the lower half of a data sample
+(a population or a probability distribution). For a data set, it may be thought of as the
+"middle" value.
+
+`median` is not an accurate average. However, it eliminates all spikes, by sorting
+all the values in a period, and selecting the value in the middle of the sorted array.
+
+## how to use
+
+Use it in alarms like this:
+
+```
+ alarm: my_alarm
+    on: my_chart
+lookup: median -1m unaligned of my_dimension
+  warn: $this > 1000
+```
+
+`median` does not change the units. For example, if the chart units is `requests/sec`, the result
+will be again expressed in the same units. 
+
+It can also be used in APIs and badges as `&group=median` in the URL.
+
+## Examples
+
+Examining last 1 minute `successful` web server responses:
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=median&after=-60&label=median&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+
+## References
+
+- [https://en.wikipedia.org/wiki/Median](https://en.wikipedia.org/wiki/Median).
diff --git a/web/api/queries/median/median.c b/web/api/queries/median/median.c
new file mode 100644
index 000000000..5a13b2e4d
--- /dev/null
+++ b/web/api/queries/median/median.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "median.h"
+
+
+// ----------------------------------------------------------------------------
+// median
+
+struct grouping_median {
+    size_t series_size;
+    size_t next_pos;
+
+    LONG_DOUBLE series[];
+};
+
+void *grouping_create_median(RRDR *r) {
+    long entries = r->group;
+    if(entries < 0) entries = 0;
+
+    struct grouping_median *g = (struct grouping_median *)callocz(1, sizeof(struct grouping_median) + entries * sizeof(LONG_DOUBLE));
+    g->series_size = (size_t)entries;
+
+    return g;
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+void grouping_reset_median(RRDR *r) {
+    struct grouping_median *g = (struct grouping_median *)r->internal.grouping_data;
+    g->next_pos = 0;
+}
+
+void grouping_free_median(RRDR *r) {
+    freez(r->internal.grouping_data);
+    r->internal.grouping_data = NULL;
+}
+
+void grouping_add_median(RRDR *r, calculated_number value) {
+    struct grouping_median *g = (struct grouping_median *)r->internal.grouping_data;
+
+    if(unlikely(g->next_pos >= g->series_size)) {
+        error("INTERNAL ERROR: median buffer overflow on chart '%s' - next_pos = %zu, series_size = %zu, r->group = %ld.", r->st->name, g->next_pos, g->series_size, r->group);
+    }
+    else {
+        if(isnormal(value))
+            g->series[g->next_pos++] = (LONG_DOUBLE)value;
+    }
+}
+
+calculated_number grouping_flush_median(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_median *g = (struct grouping_median *)r->internal.grouping_data;
+
+    calculated_number value;
+
+    if(unlikely(!g->next_pos)) {
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+    else {
+        if(g->next_pos > 1) {
+            sort_series(g->series, g->next_pos);
+            value = (calculated_number)median_on_sorted_series(g->series, g->next_pos);
+        }
+        else
+            value = (calculated_number)g->series[0];
+
+        if(!isnormal(value)) {
+            value = 0.0;
+            *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+        }
+
+        //log_series_to_stderr(g->series, g->next_pos, value, "median");
+    }
+
+    g->next_pos = 0;
+
+    return value;
+}
+
diff --git a/web/api/queries/median/median.h b/web/api/queries/median/median.h
new file mode 100644
index 000000000..dd2c1ffc5
--- /dev/null
+++ b/web/api/queries/median/median.h
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_QUERIES_MEDIAN_H
+#define NETDATA_API_QUERIES_MEDIAN_H
+
+#include "../query.h"
+#include "../rrdr.h"
+
+extern void *grouping_create_median(RRDR *r);
+extern void grouping_reset_median(RRDR *r);
+extern void grouping_free_median(RRDR *r);
+extern void grouping_add_median(RRDR *r, calculated_number value);
+extern calculated_number grouping_flush_median(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+
+#endif //NETDATA_API_QUERIES_MEDIAN_H
diff --git a/web/api/queries/min/Makefile.am b/web/api/queries/min/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/queries/min/Makefile.am
@@ -0,0 +1,8 @@
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+
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+
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+	README.md \
+	$(NULL)
diff --git a/web/api/queries/min/Makefile.in b/web/api/queries/min/Makefile.in
new file mode 100644
index 000000000..11fa615f6
--- /dev/null
+++ b/web/api/queries/min/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/web/api/queries/min/README.md b/web/api/queries/min/README.md
new file mode 100644
index 000000000..3fe13106a
--- /dev/null
+++ b/web/api/queries/min/README.md
@@ -0,0 +1,31 @@
+# Min
+
+This module finds the min value in the time-frame given.
+
+## how to use
+
+Use it in alarms like this:
+
+```
+ alarm: my_alarm
+    on: my_chart
+lookup: min -1m unaligned of my_dimension
+  warn: $this > 1000
+```
+
+`min` does not change the units. For example, if the chart units is `requests/sec`, the result
+will be again expressed in the same units. 
+
+It can also be used in APIs and badges as `&group=min` in the URL.
+
+## Examples
+
+Examining last 1 minute `successful` web server responses:
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+
+## References
+
+- [https://en.wikipedia.org/wiki/Sample_maximum_and_minimum](https://en.wikipedia.org/wiki/Sample_maximum_and_minimum).
diff --git a/web/api/queries/min/min.c b/web/api/queries/min/min.c
new file mode 100644
index 000000000..9bd7460e0
--- /dev/null
+++ b/web/api/queries/min/min.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "min.h"
+
+// ----------------------------------------------------------------------------
+// min
+
+struct grouping_min {
+    calculated_number min;
+    size_t count;
+};
+
+void *grouping_create_min(RRDR *r) {
+    (void)r;
+    return callocz(1, sizeof(struct grouping_min));
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+void grouping_reset_min(RRDR *r) {
+    struct grouping_min *g = (struct grouping_min *)r->internal.grouping_data;
+    g->min = 0;
+    g->count = 0;
+}
+
+void grouping_free_min(RRDR *r) {
+    freez(r->internal.grouping_data);
+    r->internal.grouping_data = NULL;
+}
+
+void grouping_add_min(RRDR *r, calculated_number value) {
+    if(!isnan(value)) {
+        struct grouping_min *g = (struct grouping_min *)r->internal.grouping_data;
+
+        if(!g->count || calculated_number_fabs(value) < calculated_number_fabs(g->min)) {
+            g->min = value;
+            g->count++;
+        }
+    }
+}
+
+calculated_number grouping_flush_min(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_min *g = (struct grouping_min *)r->internal.grouping_data;
+
+    calculated_number value;
+
+    if(unlikely(!g->count)) {
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+    else {
+        value = g->min;
+    }
+
+    g->min = 0.0;
+    g->count = 0;
+
+    return value;
+}
+
diff --git a/web/api/queries/min/min.h b/web/api/queries/min/min.h
new file mode 100644
index 000000000..74703605c
--- /dev/null
+++ b/web/api/queries/min/min.h
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_QUERY_MIN_H
+#define NETDATA_API_QUERY_MIN_H
+
+#include "../query.h"
+#include "../rrdr.h"
+
+extern void *grouping_create_min(RRDR *r);
+extern void grouping_reset_min(RRDR *r);
+extern void grouping_free_min(RRDR *r);
+extern void grouping_add_min(RRDR *r, calculated_number value);
+extern calculated_number grouping_flush_min(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+
+#endif //NETDATA_API_QUERY_MIN_H
diff --git a/web/api/queries/query.c b/web/api/queries/query.c
new file mode 100644
index 000000000..d03b43d3c
--- /dev/null
+++ b/web/api/queries/query.c
@@ -0,0 +1,974 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "query.h"
+#include "web/api/formatters/rrd2json.h"
+#include "rrdr.h"
+
+#include "average/average.h"
+#include "incremental_sum/incremental_sum.h"
+#include "max/max.h"
+#include "median/median.h"
+#include "min/min.h"
+#include "sum/sum.h"
+#include "stddev/stddev.h"
+#include "ses/ses.h"
+#include "des/des.h"
+
+// ----------------------------------------------------------------------------
+
+static struct {
+    const char *name;
+    uint32_t hash;
+    RRDR_GROUPING value;
+
+    // One time initialization for the module.
+    // This is called once, when netdata starts.
+    void (*init)(void);
+
+    // Allocate all required structures for a query.
+    // This is called once for each netdata query.
+    void *(*create)(struct rrdresult *r);
+
+    // Cleanup collected values, but don't destroy the structures.
+    // This is called when the query engine switches dimensions,
+    // as part of the same query (so same chart, switching metric).
+    void (*reset)(struct rrdresult *r);
+
+    // Free all resources allocated for the query.
+    void (*free)(struct rrdresult *r);
+
+    // Add a single value into the calculation.
+    // The module may decide to cache it, or use it in the fly.
+    void (*add)(struct rrdresult *r, calculated_number value);
+
+    // Generate a single result for the values added so far.
+    // More values and points may be requested later.
+    // It is up to the module to reset its internal structures
+    // when flushing it (so for a few modules it may be better to
+    // continue after a flush as if nothing changed, for others a
+    // cleanup of the internal structures may be required).
+    calculated_number (*flush)(struct rrdresult *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+} api_v1_data_groups[] = {
+        {.name = "average",
+                .hash  = 0,
+                .value = RRDR_GROUPING_AVERAGE,
+                .init  = NULL,
+                .create= grouping_create_average,
+                .reset = grouping_reset_average,
+                .free  = grouping_free_average,
+                .add   = grouping_add_average,
+                .flush = grouping_flush_average
+        },
+        {.name = "mean",                           // alias on 'average'
+                .hash  = 0,
+                .value = RRDR_GROUPING_AVERAGE,
+                .init  = NULL,
+                .create= grouping_create_average,
+                .reset = grouping_reset_average,
+                .free  = grouping_free_average,
+                .add   = grouping_add_average,
+                .flush = grouping_flush_average
+        },
+        {.name  = "incremental_sum",
+                .hash  = 0,
+                .value = RRDR_GROUPING_INCREMENTAL_SUM,
+                .init  = NULL,
+                .create= grouping_create_incremental_sum,
+                .reset = grouping_reset_incremental_sum,
+                .free  = grouping_free_incremental_sum,
+                .add   = grouping_add_incremental_sum,
+                .flush = grouping_flush_incremental_sum
+        },
+        {.name = "incremental-sum",
+                .hash  = 0,
+                .value = RRDR_GROUPING_INCREMENTAL_SUM,
+                .init  = NULL,
+                .create= grouping_create_incremental_sum,
+                .reset = grouping_reset_incremental_sum,
+                .free  = grouping_free_incremental_sum,
+                .add   = grouping_add_incremental_sum,
+                .flush = grouping_flush_incremental_sum
+        },
+        {.name = "median",
+                .hash  = 0,
+                .value = RRDR_GROUPING_MEDIAN,
+                .init  = NULL,
+                .create= grouping_create_median,
+                .reset = grouping_reset_median,
+                .free  = grouping_free_median,
+                .add   = grouping_add_median,
+                .flush = grouping_flush_median
+        },
+        {.name = "min",
+                .hash  = 0,
+                .value = RRDR_GROUPING_MIN,
+                .init  = NULL,
+                .create= grouping_create_min,
+                .reset = grouping_reset_min,
+                .free  = grouping_free_min,
+                .add   = grouping_add_min,
+                .flush = grouping_flush_min
+        },
+        {.name = "max",
+                .hash  = 0,
+                .value = RRDR_GROUPING_MAX,
+                .init  = NULL,
+                .create= grouping_create_max,
+                .reset = grouping_reset_max,
+                .free  = grouping_free_max,
+                .add   = grouping_add_max,
+                .flush = grouping_flush_max
+        },
+        {.name = "sum",
+                .hash  = 0,
+                .value = RRDR_GROUPING_SUM,
+                .init  = NULL,
+                .create= grouping_create_sum,
+                .reset = grouping_reset_sum,
+                .free  = grouping_free_sum,
+                .add   = grouping_add_sum,
+                .flush = grouping_flush_sum
+        },
+
+        // standard deviation
+        {.name = "stddev",
+                .hash  = 0,
+                .value = RRDR_GROUPING_STDDEV,
+                .init  = NULL,
+                .create= grouping_create_stddev,
+                .reset = grouping_reset_stddev,
+                .free  = grouping_free_stddev,
+                .add   = grouping_add_stddev,
+                .flush = grouping_flush_stddev
+        },
+        {.name = "cv",                           // coefficient variation is calculated by stddev
+                .hash  = 0,
+                .value = RRDR_GROUPING_CV,
+                .init  = NULL,
+                .create= grouping_create_stddev, // not an error, stddev calculates this too
+                .reset = grouping_reset_stddev,  // not an error, stddev calculates this too
+                .free  = grouping_free_stddev,   // not an error, stddev calculates this too
+                .add   = grouping_add_stddev,    // not an error, stddev calculates this too
+                .flush = grouping_flush_coefficient_of_variation
+        },
+        {.name = "rsd",                          // alias of 'cv'
+                .hash  = 0,
+                .value = RRDR_GROUPING_CV,
+                .init  = NULL,
+                .create= grouping_create_stddev, // not an error, stddev calculates this too
+                .reset = grouping_reset_stddev,  // not an error, stddev calculates this too
+                .free  = grouping_free_stddev,   // not an error, stddev calculates this too
+                .add   = grouping_add_stddev,    // not an error, stddev calculates this too
+                .flush = grouping_flush_coefficient_of_variation
+        },
+
+        /*
+        {.name = "mean",                        // same as average, no need to define it again
+                .hash  = 0,
+                .value = RRDR_GROUPING_MEAN,
+                .setup = NULL,
+                .create= grouping_create_stddev,
+                .reset = grouping_reset_stddev,
+                .free  = grouping_free_stddev,
+                .add   = grouping_add_stddev,
+                .flush = grouping_flush_mean
+        },
+        */
+
+        /*
+        {.name = "variance",                    // meaningless to offer
+                .hash  = 0,
+                .value = RRDR_GROUPING_VARIANCE,
+                .setup = NULL,
+                .create= grouping_create_stddev,
+                .reset = grouping_reset_stddev,
+                .free  = grouping_free_stddev,
+                .add   = grouping_add_stddev,
+                .flush = grouping_flush_variance
+        },
+        */
+
+        // single exponential smoothing
+        {.name = "ses",
+                .hash  = 0,
+                .value = RRDR_GROUPING_SES,
+                .init = grouping_init_ses,
+                .create= grouping_create_ses,
+                .reset = grouping_reset_ses,
+                .free  = grouping_free_ses,
+                .add   = grouping_add_ses,
+                .flush = grouping_flush_ses
+        },
+        {.name = "ema",                         // alias for 'ses'
+                .hash  = 0,
+                .value = RRDR_GROUPING_SES,
+                .init = NULL,
+                .create= grouping_create_ses,
+                .reset = grouping_reset_ses,
+                .free  = grouping_free_ses,
+                .add   = grouping_add_ses,
+                .flush = grouping_flush_ses
+        },
+        {.name = "ewma",                        // alias for ses
+                .hash  = 0,
+                .value = RRDR_GROUPING_SES,
+                .init = NULL,
+                .create= grouping_create_ses,
+                .reset = grouping_reset_ses,
+                .free  = grouping_free_ses,
+                .add   = grouping_add_ses,
+                .flush = grouping_flush_ses
+        },
+
+        // double exponential smoothing
+        {.name = "des",
+                .hash  = 0,
+                .value = RRDR_GROUPING_DES,
+                .init = grouping_init_des,
+                .create= grouping_create_des,
+                .reset = grouping_reset_des,
+                .free  = grouping_free_des,
+                .add   = grouping_add_des,
+                .flush = grouping_flush_des
+        },
+
+        // terminator
+        {.name = NULL,
+                .hash  = 0,
+                .value = RRDR_GROUPING_UNDEFINED,
+                .init = NULL,
+                .create= grouping_create_average,
+                .reset = grouping_reset_average,
+                .free  = grouping_free_average,
+                .add   = grouping_add_average,
+                .flush = grouping_flush_average
+        }
+};
+
+void web_client_api_v1_init_grouping(void) {
+    int i;
+
+    for(i = 0; api_v1_data_groups[i].name ; i++) {
+        api_v1_data_groups[i].hash = simple_hash(api_v1_data_groups[i].name);
+
+        if(api_v1_data_groups[i].init)
+            api_v1_data_groups[i].init();
+    }
+}
+
+const char *group_method2string(RRDR_GROUPING group) {
+    int i;
+
+    for(i = 0; api_v1_data_groups[i].name ; i++) {
+        if(api_v1_data_groups[i].value == group) {
+            return api_v1_data_groups[i].name;
+        }
+    }
+
+    return "unknown-group-method";
+}
+
+RRDR_GROUPING web_client_api_request_v1_data_group(const char *name, RRDR_GROUPING def) {
+    int i;
+
+    uint32_t hash = simple_hash(name);
+    for(i = 0; api_v1_data_groups[i].name ; i++)
+        if(unlikely(hash == api_v1_data_groups[i].hash && !strcmp(name, api_v1_data_groups[i].name)))
+            return api_v1_data_groups[i].value;
+
+    return def;
+}
+
+// ----------------------------------------------------------------------------
+
+static void rrdr_disable_not_selected_dimensions(RRDR *r, RRDR_OPTIONS options, const char *dims) {
+    rrdset_check_rdlock(r->st);
+
+    if(unlikely(!dims || !*dims || (dims[0] == '*' && dims[1] == '\0'))) return;
+
+    int match_ids = 0, match_names = 0;
+
+    if(unlikely(options & RRDR_OPTION_MATCH_IDS))
+        match_ids = 1;
+    if(unlikely(options & RRDR_OPTION_MATCH_NAMES))
+        match_names = 1;
+
+    if(likely(!match_ids && !match_names))
+        match_ids = match_names = 1;
+
+    SIMPLE_PATTERN *pattern = simple_pattern_create(dims, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT);
+
+    RRDDIM *d;
+    long c, dims_selected = 0, dims_not_hidden_not_zero = 0;
+    for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
+        if(    (match_ids   && simple_pattern_matches(pattern, d->id))
+               || (match_names && simple_pattern_matches(pattern, d->name))
+                ) {
+            r->od[c] |= RRDR_DIMENSION_SELECTED;
+            if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) r->od[c] &= ~RRDR_DIMENSION_HIDDEN;
+            dims_selected++;
+
+            // since the user needs this dimension
+            // make it appear as NONZERO, to return it
+            // even if the dimension has only zeros
+            // unless option non_zero is set
+            if(unlikely(!(options & RRDR_OPTION_NONZERO)))
+                r->od[c] |= RRDR_DIMENSION_NONZERO;
+
+            // count the visible dimensions
+            if(likely(r->od[c] & RRDR_DIMENSION_NONZERO))
+                dims_not_hidden_not_zero++;
+        }
+        else {
+            r->od[c] |= RRDR_DIMENSION_HIDDEN;
+            if(unlikely(r->od[c] & RRDR_DIMENSION_SELECTED)) r->od[c] &= ~RRDR_DIMENSION_SELECTED;
+        }
+    }
+    simple_pattern_free(pattern);
+
+    // check if all dimensions are hidden
+    if(unlikely(!dims_not_hidden_not_zero && dims_selected)) {
+        // there are a few selected dimensions
+        // but they are all zero
+        // enable the selected ones
+        // to avoid returning an empty chart
+        for(c = 0, d = r->st->dimensions; d ;c++, d = d->next)
+            if(unlikely(r->od[c] & RRDR_DIMENSION_SELECTED))
+                r->od[c] |= RRDR_DIMENSION_NONZERO;
+    }
+}
+
+// ----------------------------------------------------------------------------
+// helpers to find our way in RRDR
+
+static inline RRDR_VALUE_FLAGS *rrdr_line_options(RRDR *r, long rrdr_line) {
+    return &r->o[ rrdr_line * r->d ];
+}
+
+static inline calculated_number *rrdr_line_values(RRDR *r, long rrdr_line) {
+    return &r->v[ rrdr_line * r->d ];
+}
+
+static inline long rrdr_line_init(RRDR *r, time_t t, long rrdr_line) {
+    rrdr_line++;
+
+    #ifdef NETDATA_INTERNAL_CHECKS
+
+    if(unlikely(rrdr_line >= r->n))
+        error("INTERNAL ERROR: requested to step above RRDR size for chart '%s'", r->st->name);
+
+    if(unlikely(r->t[rrdr_line] != 0 && r->t[rrdr_line] != t))
+        error("INTERNAL ERROR: overwriting the timestamp of RRDR line %zu from %zu to %zu, of chart '%s'", (size_t)rrdr_line, (size_t)r->t[rrdr_line], (size_t)t, r->st->name);
+
+    #endif
+
+    // save the time
+    r->t[rrdr_line] = t;
+
+    return rrdr_line;
+}
+
+static inline void rrdr_done(RRDR *r, long rrdr_line) {
+    r->rows = rrdr_line + 1;
+}
+
+
+// ----------------------------------------------------------------------------
+// fill RRDR for a single dimension
+
+static inline void do_dimension(
+          RRDR *r
+        , long points_wanted
+        , RRDDIM *rd
+        , long dim_id_in_rrdr
+        , long after_slot
+        , long before_slot
+        , time_t after_wanted
+        , time_t before_wanted
+){
+    (void) before_slot;
+
+    RRDSET *st = r->st;
+
+    time_t
+        now = after_wanted,
+        dt = st->update_every,
+        max_date = 0,
+        min_date = 0;
+
+    long
+        slot = after_slot,
+        group_size = r->group,
+        points_added = 0,
+        values_in_group = 0,
+        values_in_group_non_zero = 0,
+        rrdr_line = -1,
+        entries = st->entries;
+
+    RRDR_VALUE_FLAGS
+        group_value_flags = RRDR_VALUE_NOTHING;
+
+    calculated_number min = r->min, max = r->max;
+    size_t db_points_read = 0;
+    for( ; points_added < points_wanted ; now += dt, slot++ ) {
+        if(unlikely(slot >= entries)) slot = 0;
+
+        // make sure we return data in the proper time range
+        if(unlikely(now > before_wanted)) {
+            #ifdef NETDATA_INTERNAL_CHECKS
+            r->internal.log = "stopped, because attempted to access the db after 'wanted before'";
+            #endif
+            break;
+        }
+        if(unlikely(now < after_wanted)) {
+            #ifdef NETDATA_INTERNAL_CHECKS
+            r->internal.log = "skipped, because attempted to access the db before 'wanted after'";
+            #endif
+            continue;
+        }
+
+        // read the value from the database
+        storage_number n = rd->values[slot];
+        calculated_number value = NAN;
+        if(likely(does_storage_number_exist(n))) {
+
+            value = unpack_storage_number(n);
+            if(likely(value != 0.0))
+                values_in_group_non_zero++;
+
+            if(unlikely(did_storage_number_reset(n)))
+                group_value_flags |= RRDR_VALUE_RESET;
+
+        }
+
+        // add this value for grouping
+        r->internal.grouping_add(r, value);
+        values_in_group++;
+        db_points_read++;
+
+        if(unlikely(values_in_group == group_size)) {
+            rrdr_line = rrdr_line_init(r, now, rrdr_line);
+
+            if(unlikely(!min_date)) min_date = now;
+            max_date = now;
+
+            // find the place to store our values
+            RRDR_VALUE_FLAGS *rrdr_value_options_ptr = &r->o[rrdr_line * r->d + dim_id_in_rrdr];
+
+            // update the dimension options
+            if(likely(values_in_group_non_zero))
+                r->od[dim_id_in_rrdr] |= RRDR_DIMENSION_NONZERO;
+
+            // store the specific point options
+            *rrdr_value_options_ptr = group_value_flags;
+
+            // store the value
+            calculated_number value = r->internal.grouping_flush(r, rrdr_value_options_ptr);
+            r->v[rrdr_line * r->d + dim_id_in_rrdr] = value;
+
+            if(likely(points_added || dim_id_in_rrdr)) {
+                // find the min/max across all dimensions
+
+                if(unlikely(value < min)) min = value;
+                if(unlikely(value > max)) max = value;
+
+            }
+            else {
+                // runs only when dim_id_in_rrdr == 0 && points_added == 0
+                // so, on the first point added for the query.
+                min = max = value;
+            }
+
+            points_added++;
+            values_in_group = 0;
+            group_value_flags = RRDR_VALUE_NOTHING;
+            values_in_group_non_zero = 0;
+        }
+    }
+
+    r->internal.db_points_read += db_points_read;
+    r->internal.result_points_generated += points_added;
+
+    r->min = min;
+    r->max = max;
+    r->before = max_date;
+    r->after = min_date;
+    rrdr_done(r, rrdr_line);
+
+    #ifdef NETDATA_INTERNAL_CHECKS
+    if(unlikely(r->rows != points_added))
+        error("INTERNAL ERROR: %s.%s added %zu rows, but RRDR says I added %zu.", r->st->name, rd->name, (size_t)points_added, (size_t)r->rows);
+    #endif
+}
+
+// ----------------------------------------------------------------------------
+// fill RRDR for the whole chart
+
+#ifdef NETDATA_INTERNAL_CHECKS
+static void rrd2rrdr_log_request_response_metdata(RRDR *r
+        , RRDR_GROUPING group_method
+        , int aligned
+        , long group
+        , long resampling_time
+        , long resampling_group
+        , time_t after_wanted
+        , time_t after_requested
+        , time_t before_wanted
+        , time_t before_requested
+        , long points_requested
+        , long points_wanted
+        , size_t after_slot
+        , size_t before_slot
+        , const char *msg
+        ) {
+    info("INTERNAL ERROR: rrd2rrdr() on %s update every %d with %s grouping %s (group: %ld, resampling_time: %ld, resampling_group: %ld), "
+         "after (got: %zu, want: %zu, req: %zu, db: %zu), "
+         "before (got: %zu, want: %zu, req: %zu, db: %zu), "
+         "duration (got: %zu, want: %zu, req: %zu, db: %zu), "
+         "slot (after: %zu, before: %zu, delta: %zu), "
+         "points (got: %ld, want: %ld, req: %ld, db: %ld), "
+         "%s"
+         , r->st->name
+         , r->st->update_every
+
+         // grouping
+         , (aligned) ? "aligned" : "unaligned"
+         , group_method2string(group_method)
+         , group
+         , resampling_time
+         , resampling_group
+
+         // after
+         , (size_t)r->after - (group - 1) * r->st->update_every
+         , (size_t)after_wanted
+         , (size_t)after_requested
+         , (size_t)rrdset_first_entry_t(r->st)
+
+         // before
+         , (size_t)r->before
+         , (size_t)before_wanted
+         , (size_t)before_requested
+         , (size_t)rrdset_last_entry_t(r->st)
+
+         // duration
+         , (size_t)(r->before - r->after + r->st->update_every)
+         , (size_t)(before_wanted - after_wanted + r->st->update_every)
+         , (size_t)(before_requested - after_requested)
+         , (size_t)((rrdset_last_entry_t(r->st) - rrdset_first_entry_t(r->st)) + r->st->update_every)
+
+         // slot
+         , after_slot
+         , before_slot
+         , (after_slot > before_slot) ? (r->st->entries - after_slot + before_slot) : (before_slot - after_slot)
+
+         // points
+         , r->rows
+         , points_wanted
+         , points_requested
+         , r->st->entries
+
+         // message
+         , msg
+    );
+}
+#endif // NETDATA_INTERNAL_CHECKS
+
+RRDR *rrd2rrdr(
+        RRDSET *st
+        , long points_requested
+        , long long after_requested
+        , long long before_requested
+        , RRDR_GROUPING group_method
+        , long resampling_time_requested
+        , RRDR_OPTIONS options
+        , const char *dimensions
+) {
+    int aligned = !(options & RRDR_OPTION_NOT_ALIGNED);
+
+    int absolute_period_requested = -1;
+
+    time_t first_entry_t = rrdset_first_entry_t(st);
+    time_t last_entry_t  = rrdset_last_entry_t(st);
+
+    if(before_requested == 0 && after_requested == 0) {
+        // dump the all the data
+        before_requested = last_entry_t;
+        after_requested = first_entry_t;
+        absolute_period_requested = 0;
+    }
+
+    // allow relative for before (smaller than API_RELATIVE_TIME_MAX)
+    if(((before_requested < 0)?-before_requested:before_requested) <= API_RELATIVE_TIME_MAX) {
+        if(abs(before_requested) % st->update_every) {
+            // make sure it is multiple of st->update_every
+            if(before_requested < 0) before_requested = before_requested - st->update_every - before_requested % st->update_every;
+            else           before_requested = before_requested + st->update_every - before_requested % st->update_every;
+        }
+        if(before_requested > 0) before_requested = first_entry_t + before_requested;
+        else           before_requested = last_entry_t  + before_requested;
+        absolute_period_requested = 0;
+    }
+
+    // allow relative for after (smaller than API_RELATIVE_TIME_MAX)
+    if(((after_requested < 0)?-after_requested:after_requested) <= API_RELATIVE_TIME_MAX) {
+        if(after_requested == 0) after_requested = -st->update_every;
+        if(abs(after_requested) % st->update_every) {
+            // make sure it is multiple of st->update_every
+            if(after_requested < 0) after_requested = after_requested - st->update_every - after_requested % st->update_every;
+            else          after_requested = after_requested + st->update_every - after_requested % st->update_every;
+        }
+        after_requested = before_requested + after_requested;
+        absolute_period_requested = 0;
+    }
+
+    if(absolute_period_requested == -1)
+        absolute_period_requested = 1;
+
+    // make sure they are within our timeframe
+    if(before_requested > last_entry_t)  before_requested = last_entry_t;
+    if(before_requested < first_entry_t) before_requested = first_entry_t;
+
+    if(after_requested > last_entry_t)  after_requested = last_entry_t;
+    if(after_requested < first_entry_t) after_requested = first_entry_t;
+
+    // check if they are reversed
+    if(after_requested > before_requested) {
+        time_t tmp = before_requested;
+        before_requested = after_requested;
+        after_requested = tmp;
+    }
+
+    // the duration of the chart
+    time_t duration = before_requested - after_requested;
+    long available_points = duration / st->update_every;
+
+    if(duration <= 0 || available_points <= 0)
+        return rrdr_create(st, 1);
+
+    // check the number of wanted points in the result
+    if(unlikely(points_requested < 0)) points_requested = -points_requested;
+    if(unlikely(points_requested > available_points)) points_requested = available_points;
+    if(unlikely(points_requested == 0)) points_requested = available_points;
+
+    // calculate the desired grouping of source data points
+    long group = available_points / points_requested;
+    if(unlikely(group <= 0)) group = 1;
+    if(unlikely(available_points % points_requested > points_requested / 2)) group++; // rounding to the closest integer
+
+    // resampling_time_requested enforces a certain grouping multiple
+    calculated_number resampling_divisor = 1.0;
+    long resampling_group = 1;
+    if(unlikely(resampling_time_requested > st->update_every)) {
+        if (unlikely(resampling_time_requested > duration)) {
+            // group_time is above the available duration
+
+            #ifdef NETDATA_INTERNAL_CHECKS
+            info("INTERNAL CHECK: %s: requested gtime %ld secs, is greater than the desired duration %ld secs", st->id, resampling_time_requested, duration);
+            #endif
+
+            group = available_points; // use all the points
+        }
+        else {
+            // the points we should group to satisfy gtime
+            resampling_group = resampling_time_requested / st->update_every;
+            if(unlikely(resampling_time_requested % st->update_every)) {
+                #ifdef NETDATA_INTERNAL_CHECKS
+                info("INTERNAL CHECK: %s: requested gtime %ld secs, is not a multiple of the chart's data collection frequency %d secs", st->id, resampling_time_requested, st->update_every);
+                #endif
+
+                resampling_group++;
+            }
+
+            // adapt group according to resampling_group
+            if(unlikely(group < resampling_group)) group  = resampling_group; // do not allow grouping below the desired one
+            if(unlikely(group % resampling_group)) group += resampling_group - (group % resampling_group); // make sure group is multiple of resampling_group
+
+            //resampling_divisor = group / resampling_group;
+            resampling_divisor = (calculated_number)(group * st->update_every) / (calculated_number)resampling_time_requested;
+        }
+    }
+
+    // now that we have group,
+    // align the requested timeframe to fit it.
+
+    if(aligned) {
+        // alignement has been requested, so align the values
+        before_requested -= (before_requested % group);
+        after_requested  -= (after_requested % group);
+    }
+
+    // we align the request on requested_before
+    time_t before_wanted = before_requested;
+    if(likely(before_wanted > last_entry_t)) {
+        #ifdef NETDATA_INTERNAL_CHECKS
+        error("INTERNAL ERROR: rrd2rrdr() on %s, before_wanted is after db max", st->name);
+        #endif
+
+        before_wanted = last_entry_t - (last_entry_t % ( ((aligned)?group:1) * st->update_every ));
+    }
+    size_t before_slot = rrdset_time2slot(st, before_wanted);
+
+    // we need to estimate the number of points, for having
+    // an integer number of values per point
+    long points_wanted = (before_wanted - after_requested) / st->update_every / group;
+
+    time_t after_wanted  = before_wanted - (points_wanted * group * st->update_every) + st->update_every;
+    if(unlikely(after_wanted < first_entry_t)) {
+        // hm... we go to the past, calculate again points_wanted using all the db from before_wanted to the beginning
+        points_wanted = (before_wanted - first_entry_t) / group;
+
+        // recalculate after wanted with the new number of points
+        after_wanted  = before_wanted - (points_wanted * group * st->update_every) + st->update_every;
+
+        if(unlikely(after_wanted < first_entry_t)) {
+            #ifdef NETDATA_INTERNAL_CHECKS
+            error("INTERNAL ERROR: rrd2rrdr() on %s, after_wanted is before db min", st->name);
+            #endif
+
+            after_wanted = first_entry_t - (first_entry_t % ( ((aligned)?group:1) * st->update_every )) + ( ((aligned)?group:1) * st->update_every );
+        }
+    }
+    size_t after_slot  = rrdset_time2slot(st, after_wanted);
+
+    // check if they are reversed
+    if(unlikely(after_wanted > before_wanted)) {
+        #ifdef NETDATA_INTERNAL_CHECKS
+        error("INTERNAL ERROR: rrd2rrdr() on %s, reversed wanted after/before", st->name);
+        #endif
+        time_t tmp = before_wanted;
+        before_wanted = after_wanted;
+        after_wanted = tmp;
+    }
+
+    // recalculate points_wanted using the final time-frame
+    points_wanted   = (before_wanted - after_wanted) / st->update_every / group + 1;
+    if(unlikely(points_wanted < 0)) {
+        #ifdef NETDATA_INTERNAL_CHECKS
+        error("INTERNAL ERROR: rrd2rrdr() on %s, points_wanted is %ld", st->name, points_wanted);
+        #endif
+        points_wanted = 0;
+    }
+
+#ifdef NETDATA_INTERNAL_CHECKS
+    duration = before_wanted - after_wanted;
+
+    if(after_wanted < first_entry_t)
+        error("INTERNAL CHECK: after_wanted %u is too small, minimum %u", (uint32_t)after_wanted, (uint32_t)first_entry_t);
+
+    if(after_wanted > last_entry_t)
+        error("INTERNAL CHECK: after_wanted %u is too big, maximum %u", (uint32_t)after_wanted, (uint32_t)last_entry_t);
+
+    if(before_wanted < first_entry_t)
+        error("INTERNAL CHECK: before_wanted %u is too small, minimum %u", (uint32_t)before_wanted, (uint32_t)first_entry_t);
+
+    if(before_wanted > last_entry_t)
+        error("INTERNAL CHECK: before_wanted %u is too big, maximum %u", (uint32_t)before_wanted, (uint32_t)last_entry_t);
+
+    if(before_slot >= (size_t)st->entries)
+        error("INTERNAL CHECK: before_slot is invalid %zu, expected 0 to %ld", before_slot, st->entries - 1);
+
+    if(after_slot >= (size_t)st->entries)
+        error("INTERNAL CHECK: after_slot is invalid %zu, expected 0 to %ld", after_slot, st->entries - 1);
+
+    if(points_wanted > (before_wanted - after_wanted) / group / st->update_every + 1)
+        error("INTERNAL CHECK: points_wanted %ld is more than points %ld", points_wanted, (before_wanted - after_wanted) / group / st->update_every + 1);
+
+    if(group < resampling_group)
+        error("INTERNAL CHECK: group %ld is less than the desired group points %ld", group, resampling_group);
+
+    if(group > resampling_group && group % resampling_group)
+        error("INTERNAL CHECK: group %ld is not a multiple of the desired group points %ld", group, resampling_group);
+#endif
+
+    // -------------------------------------------------------------------------
+    // initialize our result set
+    // this also locks the chart for us
+
+    RRDR *r = rrdr_create(st, points_wanted);
+    if(unlikely(!r)) {
+        #ifdef NETDATA_INTERNAL_CHECKS
+        error("INTERNAL CHECK: Cannot create RRDR for %s, after=%u, before=%u, duration=%u, points=%ld", st->id, (uint32_t)after_wanted, (uint32_t)before_wanted, (uint32_t)duration, points_wanted);
+        #endif
+        return NULL;
+    }
+
+    if(unlikely(!r->d || !points_wanted)) {
+        #ifdef NETDATA_INTERNAL_CHECKS
+        error("INTERNAL CHECK: Returning empty RRDR (no dimensions in RRDSET) for %s, after=%u, before=%u, duration=%zu, points=%ld", st->id, (uint32_t)after_wanted, (uint32_t)before_wanted, (size_t)duration, points_wanted);
+        #endif
+        return r;
+    }
+
+    if(unlikely(absolute_period_requested == 1))
+        r->result_options |= RRDR_RESULT_OPTION_ABSOLUTE;
+    else
+        r->result_options |= RRDR_RESULT_OPTION_RELATIVE;
+
+    // find how many dimensions we have
+    long dimensions_count = r->d;
+
+    // -------------------------------------------------------------------------
+    // initialize RRDR
+
+    r->group = group;
+    r->update_every = (int)group * st->update_every;
+    r->before = before_wanted;
+    r->after = after_wanted;
+    r->internal.points_wanted = points_wanted;
+    r->internal.resampling_group = resampling_group;
+    r->internal.resampling_divisor = resampling_divisor;
+
+
+    // -------------------------------------------------------------------------
+    // assign the processor functions
+
+    {
+        int i, found = 0;
+        for(i = 0; !found && api_v1_data_groups[i].name ;i++) {
+            if(api_v1_data_groups[i].value == group_method) {
+                r->internal.grouping_create= api_v1_data_groups[i].create;
+                r->internal.grouping_reset = api_v1_data_groups[i].reset;
+                r->internal.grouping_free  = api_v1_data_groups[i].free;
+                r->internal.grouping_add   = api_v1_data_groups[i].add;
+                r->internal.grouping_flush = api_v1_data_groups[i].flush;
+                found = 1;
+            }
+        }
+        if(!found) {
+            errno = 0;
+            #ifdef NETDATA_INTERNAL_CHECKS
+            error("INTERNAL ERROR: grouping method %u not found for chart '%s'. Using 'average'", (unsigned int)group_method, r->st->name);
+            #endif
+            r->internal.grouping_create= grouping_create_average;
+            r->internal.grouping_reset = grouping_reset_average;
+            r->internal.grouping_free  = grouping_free_average;
+            r->internal.grouping_add   = grouping_add_average;
+            r->internal.grouping_flush = grouping_flush_average;
+        }
+    }
+
+    // allocate any memory required by the grouping method
+    r->internal.grouping_data = r->internal.grouping_create(r);
+
+
+    // -------------------------------------------------------------------------
+    // disable the not-wanted dimensions
+
+    rrdset_check_rdlock(st);
+
+    if(dimensions)
+        rrdr_disable_not_selected_dimensions(r, options, dimensions);
+
+
+    // -------------------------------------------------------------------------
+    // do the work for each dimension
+
+    time_t max_after = 0, min_before = 0;
+    long max_rows = 0;
+
+    RRDDIM *rd;
+    long c, dimensions_used = 0, dimensions_nonzero = 0;
+    for(rd = st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
+
+        // if we need a percentage, we need to calculate all dimensions
+        if(unlikely(!(options & RRDR_OPTION_PERCENTAGE) && (r->od[c] & RRDR_DIMENSION_HIDDEN))) {
+            if(unlikely(r->od[c] & RRDR_DIMENSION_SELECTED)) r->od[c] &= ~RRDR_DIMENSION_SELECTED;
+            continue;
+        }
+        r->od[c] |= RRDR_DIMENSION_SELECTED;
+
+        // reset the grouping for the new dimension
+        r->internal.grouping_reset(r);
+
+        do_dimension(
+                r
+                , points_wanted
+                , rd
+                , c
+                , after_slot
+                , before_slot
+                , after_wanted
+                , before_wanted
+                );
+
+        if(r->od[c] & RRDR_DIMENSION_NONZERO)
+            dimensions_nonzero++;
+
+        // verify all dimensions are aligned
+        if(unlikely(!dimensions_used)) {
+            min_before = r->before;
+            max_after = r->after;
+            max_rows = r->rows;
+        }
+        else {
+            if(r->after != max_after) {
+                #ifdef NETDATA_INTERNAL_CHECKS
+                error("INTERNAL ERROR: 'after' mismatch between dimensions for chart '%s': max is %zu, dimension '%s' has %zu",
+                        st->name, (size_t)max_after, rd->name, (size_t)r->after);
+                #endif
+                r->after = (r->after > max_after) ? r->after : max_after;
+            }
+
+            if(r->before != min_before) {
+                #ifdef NETDATA_INTERNAL_CHECKS
+                error("INTERNAL ERROR: 'before' mismatch between dimensions for chart '%s': max is %zu, dimension '%s' has %zu",
+                        st->name, (size_t)min_before, rd->name, (size_t)r->before);
+                #endif
+                r->before = (r->before < min_before) ? r->before : min_before;
+            }
+
+            if(r->rows != max_rows) {
+                #ifdef NETDATA_INTERNAL_CHECKS
+                error("INTERNAL ERROR: 'rows' mismatch between dimensions for chart '%s': max is %zu, dimension '%s' has %zu",
+                        st->name, (size_t)max_rows, rd->name, (size_t)r->rows);
+                #endif
+                r->rows = (r->rows > max_rows) ? r->rows : max_rows;
+            }
+        }
+
+        dimensions_used++;
+    }
+
+    #ifdef NETDATA_INTERNAL_CHECKS
+
+    if(r->internal.log)
+        rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, after_slot, before_slot, r->internal.log);
+
+    if(r->rows != points_wanted)
+        rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, after_slot, before_slot, "got 'points' is not wanted 'points'");
+
+    if(aligned && (r->before % group) != 0)
+        rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, after_slot, before_slot, "'before' is not aligned but alignment is required");
+
+    // 'after' should not be aligned, since we start inside the first group
+    //if(aligned && (r->after % group) != 0)
+    //    rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, after_slot, before_slot, "'after' is not aligned but alignment is required");
+
+    if(r->before != before_requested)
+        rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, after_slot, before_slot, "chart is not aligned to requested 'before'");
+
+    if(r->before != before_wanted)
+        rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, after_slot, before_slot, "got 'before' is not wanted 'before'");
+
+    // reported 'after' varies, depending on group
+    if((r->after - (group - 1) * r->st->update_every) != after_wanted)
+        rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, after_slot, before_slot, "got 'after' is not wanted 'after'");
+
+    #endif
+
+    // free all resources used by the grouping method
+    r->internal.grouping_free(r);
+
+    // when all the dimensions are zero, we should return all of them
+    if(unlikely(options & RRDR_OPTION_NONZERO && !dimensions_nonzero)) {
+        // all the dimensions are zero
+        // mark them as NONZERO to send them all
+        for(rd = st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
+            if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+            r->od[c] |= RRDR_DIMENSION_NONZERO;
+        }
+    }
+
+    rrdr_query_completed(r->internal.db_points_read, r->internal.result_points_generated);
+    return r;
+}
diff --git a/web/api/queries/query.h b/web/api/queries/query.h
new file mode 100644
index 000000000..6b8a51c58
--- /dev/null
+++ b/web/api/queries/query.h
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_DATA_QUERY_H
+#define NETDATA_API_DATA_QUERY_H
+
+typedef enum rrdr_grouping {
+    RRDR_GROUPING_UNDEFINED = 0,
+    RRDR_GROUPING_AVERAGE,
+    RRDR_GROUPING_MIN,
+    RRDR_GROUPING_MAX,
+    RRDR_GROUPING_SUM,
+    RRDR_GROUPING_INCREMENTAL_SUM,
+    RRDR_GROUPING_MEDIAN,
+    RRDR_GROUPING_STDDEV,
+    RRDR_GROUPING_CV,
+    RRDR_GROUPING_SES,
+    RRDR_GROUPING_DES,
+} RRDR_GROUPING;
+
+extern const char *group_method2string(RRDR_GROUPING group);
+extern void web_client_api_v1_init_grouping(void);
+extern RRDR_GROUPING web_client_api_request_v1_data_group(const char *name, RRDR_GROUPING def);
+
+#endif //NETDATA_API_DATA_QUERY_H
diff --git a/web/api/queries/rrdr.c b/web/api/queries/rrdr.c
new file mode 100644
index 000000000..e727e607e
--- /dev/null
+++ b/web/api/queries/rrdr.c
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "rrdr.h"
+
+/*
+static void rrdr_dump(RRDR *r)
+{
+    long c, i;
+    RRDDIM *d;
+
+    fprintf(stderr, "\nCHART %s (%s)\n", r->st->id, r->st->name);
+
+    for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
+        fprintf(stderr, "DIMENSION %s (%s), %s%s%s%s\n"
+                , d->id
+                , d->name
+                , (r->od[c] & RRDR_EMPTY)?"EMPTY ":""
+                , (r->od[c] & RRDR_RESET)?"RESET ":""
+                , (r->od[c] & RRDR_DIMENSION_HIDDEN)?"HIDDEN ":""
+                , (r->od[c] & RRDR_DIMENSION_NONZERO)?"NONZERO ":""
+                );
+    }
+
+    if(r->rows <= 0) {
+        fprintf(stderr, "RRDR does not have any values in it.\n");
+        return;
+    }
+
+    fprintf(stderr, "RRDR includes %d values in it:\n", r->rows);
+
+    // for each line in the array
+    for(i = 0; i < r->rows ;i++) {
+        calculated_number *cn = &r->v[ i * r->d ];
+        RRDR_DIMENSION_FLAGS *co = &r->o[ i * r->d ];
+
+        // print the id and the timestamp of the line
+        fprintf(stderr, "%ld %ld ", i + 1, r->t[i]);
+
+        // for each dimension
+        for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
+            if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+            if(unlikely(!(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+            if(co[c] & RRDR_EMPTY)
+                fprintf(stderr, "null ");
+            else
+                fprintf(stderr, CALCULATED_NUMBER_FORMAT " %s%s%s%s "
+                    , cn[c]
+                    , (co[c] & RRDR_EMPTY)?"E":" "
+                    , (co[c] & RRDR_RESET)?"R":" "
+                    , (co[c] & RRDR_DIMENSION_HIDDEN)?"H":" "
+                    , (co[c] & RRDR_DIMENSION_NONZERO)?"N":" "
+                    );
+        }
+
+        fprintf(stderr, "\n");
+    }
+}
+*/
+
+
+
+
+inline static void rrdr_lock_rrdset(RRDR *r) {
+    if(unlikely(!r)) {
+        error("NULL value given!");
+        return;
+    }
+
+    rrdset_rdlock(r->st);
+    r->has_st_lock = 1;
+}
+
+inline static void rrdr_unlock_rrdset(RRDR *r) {
+    if(unlikely(!r)) {
+        error("NULL value given!");
+        return;
+    }
+
+    if(likely(r->has_st_lock)) {
+        rrdset_unlock(r->st);
+        r->has_st_lock = 0;
+    }
+}
+
+inline void rrdr_free(RRDR *r)
+{
+    if(unlikely(!r)) {
+        error("NULL value given!");
+        return;
+    }
+
+    rrdr_unlock_rrdset(r);
+    freez(r->t);
+    freez(r->v);
+    freez(r->o);
+    freez(r->od);
+    freez(r);
+}
+
+RRDR *rrdr_create(RRDSET *st, long n)
+{
+    if(unlikely(!st)) {
+        error("NULL value given!");
+        return NULL;
+    }
+
+    RRDR *r = callocz(1, sizeof(RRDR));
+    r->st = st;
+
+    rrdr_lock_rrdset(r);
+
+    RRDDIM *rd;
+    rrddim_foreach_read(rd, st) r->d++;
+
+    r->n = n;
+
+    r->t = callocz((size_t)n, sizeof(time_t));
+    r->v = mallocz(n * r->d * sizeof(calculated_number));
+    r->o = mallocz(n * r->d * sizeof(RRDR_VALUE_FLAGS));
+    r->od = mallocz(r->d * sizeof(RRDR_DIMENSION_FLAGS));
+
+    // set the hidden flag on hidden dimensions
+    int c;
+    for(c = 0, rd = st->dimensions ; rd ; c++, rd = rd->next) {
+        if(unlikely(rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)))
+            r->od[c] = RRDR_DIMENSION_HIDDEN;
+        else
+            r->od[c] = RRDR_DIMENSION_DEFAULT;
+    }
+
+    r->group = 1;
+    r->update_every = 1;
+
+    return r;
+}
diff --git a/web/api/queries/rrdr.h b/web/api/queries/rrdr.h
new file mode 100644
index 000000000..4f6350389
--- /dev/null
+++ b/web/api/queries/rrdr.h
@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_QUERIES_RRDR_H
+#define NETDATA_QUERIES_RRDR_H
+
+#include "libnetdata/libnetdata.h"
+
+typedef enum rrdr_options {
+    RRDR_OPTION_NONZERO      = 0x00000001, // don't output dimensions will just zero values
+    RRDR_OPTION_REVERSED     = 0x00000002, // output the rows in reverse order (oldest to newest)
+    RRDR_OPTION_ABSOLUTE     = 0x00000004, // values positive, for DATASOURCE_SSV before summing
+    RRDR_OPTION_MIN2MAX      = 0x00000008, // when adding dimensions, use max - min, instead of sum
+    RRDR_OPTION_SECONDS      = 0x00000010, // output seconds, instead of dates
+    RRDR_OPTION_MILLISECONDS = 0x00000020, // output milliseconds, instead of dates
+    RRDR_OPTION_NULL2ZERO    = 0x00000040, // do not show nulls, convert them to zeros
+    RRDR_OPTION_OBJECTSROWS  = 0x00000080, // each row of values should be an object, not an array
+    RRDR_OPTION_GOOGLE_JSON  = 0x00000100, // comply with google JSON/JSONP specs
+    RRDR_OPTION_JSON_WRAP    = 0x00000200, // wrap the response in a JSON header with info about the result
+    RRDR_OPTION_LABEL_QUOTES = 0x00000400, // in CSV output, wrap header labels in double quotes
+    RRDR_OPTION_PERCENTAGE   = 0x00000800, // give values as percentage of total
+    RRDR_OPTION_NOT_ALIGNED  = 0x00001000, // do not align charts for persistant timeframes
+    RRDR_OPTION_DISPLAY_ABS  = 0x00002000, // for badges, display the absolute value, but calculate colors with sign
+    RRDR_OPTION_MATCH_IDS    = 0x00004000, // when filtering dimensions, match only IDs
+    RRDR_OPTION_MATCH_NAMES  = 0x00008000, // when filtering dimensions, match only names
+} RRDR_OPTIONS;
+
+typedef enum rrdr_value_flag {
+    RRDR_VALUE_NOTHING      = 0x00, // no flag set (a good default)
+    RRDR_VALUE_EMPTY        = 0x01, // the database value is empty
+    RRDR_VALUE_RESET        = 0x02, // the database value is marked as reset (overflown)
+} RRDR_VALUE_FLAGS;
+
+typedef enum rrdr_dimension_flag {
+    RRDR_DIMENSION_DEFAULT  = 0x00,
+    RRDR_DIMENSION_HIDDEN   = 0x04, // the dimension is hidden (not to be presented to callers)
+    RRDR_DIMENSION_NONZERO  = 0x08, // the dimension is non zero (contains non-zero values)
+    RRDR_DIMENSION_SELECTED = 0x10, // the dimension is selected for evaluation in this RRDR
+} RRDR_DIMENSION_FLAGS;
+
+// RRDR result options
+typedef enum rrdr_result_flags {
+    RRDR_RESULT_OPTION_ABSOLUTE = 0x00000001, // the query uses absolute time-frames (can be cached by browsers and proxies)
+    RRDR_RESULT_OPTION_RELATIVE = 0x00000002, // the query uses relative time-frames (should not to be cached by browsers and proxies)
+} RRDR_RESULT_FLAGS;
+
+typedef struct rrdresult {
+    struct rrdset *st;         // the chart this result refers to
+
+    RRDR_RESULT_FLAGS result_options; // RRDR_RESULT_OPTION_*
+
+    int d;                    // the number of dimensions
+    long n;                   // the number of values in the arrays
+    long rows;                // the number of rows used
+
+    RRDR_DIMENSION_FLAGS *od; // the options for the dimensions
+
+    time_t *t;                // array of n timestamps
+    calculated_number *v;     // array n x d values
+    RRDR_VALUE_FLAGS *o;      // array n x d options for each value returned
+
+    long group;               // how many collected values were grouped for each row
+    int update_every;         // what is the suggested update frequency in seconds
+
+    calculated_number min;
+    calculated_number max;
+
+    time_t before;
+    time_t after;
+
+    int has_st_lock;        // if st is read locked by us
+
+    // internal rrd2rrdr() members below this point
+    struct {
+        long points_wanted;
+        long resampling_group;
+        calculated_number resampling_divisor;
+
+        void *(*grouping_create)(struct rrdresult *r);
+        void (*grouping_reset)(struct rrdresult *r);
+        void (*grouping_free)(struct rrdresult *r);
+        void (*grouping_add)(struct rrdresult *r, calculated_number value);
+        calculated_number (*grouping_flush)(struct rrdresult *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+        void *grouping_data;
+
+        #ifdef NETDATA_INTERNAL_CHECKS
+        const char *log;
+        #endif
+
+        size_t db_points_read;
+        size_t result_points_generated;
+    } internal;
+} RRDR;
+
+#define rrdr_rows(r) ((r)->rows)
+
+extern void rrdr_free(RRDR *r);
+extern RRDR *rrdr_create(struct rrdset *st, long n);
+
+#include "../web_api_v1.h"
+#include "web/api/queries/query.h"
+
+extern RRDR *rrd2rrdr(RRDSET *st, long points_requested, long long after_requested, long long before_requested, RRDR_GROUPING group_method, long resampling_time_requested, RRDR_OPTIONS options, const char *dimensions);
+
+#include "query.h"
+
+#endif //NETDATA_QUERIES_RRDR_H
diff --git a/web/api/queries/ses/Makefile.am b/web/api/queries/ses/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/queries/ses/Makefile.am
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diff --git a/web/api/queries/ses/Makefile.in b/web/api/queries/ses/Makefile.in
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index 000000000..bb538fac3
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diff --git a/web/api/queries/ses/README.md b/web/api/queries/ses/README.md
new file mode 100644
index 000000000..b5dacea83
--- /dev/null
+++ b/web/api/queries/ses/README.md
@@ -0,0 +1,54 @@
+# Single (or Simple) Exponential Smoothing (`ses`)
+
+> This query is also available as `ema` and `ewma`.
+
+An exponential moving average (`ema`), also known as an exponentially weighted moving average (`ewma`)
+is a first-order infinite impulse response filter that applies weighting factors which decrease
+exponentially. The weighting for each older datum decreases exponentially, never reaching zero.
+
+In simple terms, this is like an average value, but more recent values are given more weight.
+
+Netdata automatically adjusts the weight (`alpha`) based on the number of values processed,
+using the formula:
+
+```
+window = max(number of values, 15)
+alpha  = 2 / (window + 1)
+```
+
+You can change the fixed value `15` by setting in `netdata.conf`:
+
+```
+[web]
+   ses max window = 15
+```
+
+## how to use
+
+Use it in alarms like this:
+
+```
+ alarm: my_alarm
+    on: my_chart
+lookup: ses -1m unaligned of my_dimension
+  warn: $this > 1000
+```
+
+`ses` does not change the units. For example, if the chart units is `requests/sec`, the exponential
+moving average will be again expressed in the same units. 
+
+It can also be used in APIs and badges as `&group=ses` in the URL.
+
+## Examples
+
+Examining last 1 minute `successful` web server responses:
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=ses&after=-60&label=single+exponential+smoothing&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+
+## References
+
+- [https://en.wikipedia.org/wiki/Moving_average#exponential-moving-average](https://en.wikipedia.org/wiki/Moving_average#exponential-moving-average)
+- [https://en.wikipedia.org/wiki/Exponential_smoothing](https://en.wikipedia.org/wiki/Exponential_smoothing).
diff --git a/web/api/queries/ses/ses.c b/web/api/queries/ses/ses.c
new file mode 100644
index 000000000..6ea40dfba
--- /dev/null
+++ b/web/api/queries/ses/ses.c
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "ses.h"
+
+
+// ----------------------------------------------------------------------------
+// single exponential smoothing
+
+struct grouping_ses {
+    calculated_number alpha;
+    calculated_number alpha_other;
+    calculated_number level;
+    size_t count;
+};
+
+static size_t max_window_size = 15;
+
+void grouping_init_ses(void) {
+    long long ret = config_get_number(CONFIG_SECTION_WEB, "ses max window", (long long)max_window_size);
+    if(ret <= 1) {
+        config_set_number(CONFIG_SECTION_WEB, "ses max window", (long long)max_window_size);
+    }
+    else {
+        max_window_size = (size_t) ret;
+    }
+}
+
+static inline calculated_number window(RRDR *r, struct grouping_ses *g) {
+    (void)g;
+
+    calculated_number points;
+    if(r->group == 1) {
+        // provide a running DES
+        points = r->internal.points_wanted;
+    }
+    else {
+        // provide a SES with flush points
+        points = r->group;
+    }
+
+    return (points > max_window_size) ? max_window_size : points;
+}
+
+static inline void set_alpha(RRDR *r, struct grouping_ses *g) {
+    // https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
+    // A commonly used value for alpha is 2 / (N + 1)
+    g->alpha = 2.0 / (window(r, g) + 1.0);
+    g->alpha_other = 1.0 - g->alpha;
+}
+
+void *grouping_create_ses(RRDR *r) {
+    struct grouping_ses *g = (struct grouping_ses *)callocz(1, sizeof(struct grouping_ses));
+    set_alpha(r, g);
+    g->level = 0.0;
+    return g;
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+void grouping_reset_ses(RRDR *r) {
+    struct grouping_ses *g = (struct grouping_ses *)r->internal.grouping_data;
+    g->level = 0.0;
+    g->count = 0;
+}
+
+void grouping_free_ses(RRDR *r) {
+    freez(r->internal.grouping_data);
+    r->internal.grouping_data = NULL;
+}
+
+void grouping_add_ses(RRDR *r, calculated_number value) {
+    struct grouping_ses *g = (struct grouping_ses *)r->internal.grouping_data;
+
+    if(isnormal(value)) {
+        if(unlikely(!g->count))
+            g->level = value;
+
+        g->level = g->alpha * value + g->alpha_other * g->level;
+        g->count++;
+    }
+}
+
+calculated_number grouping_flush_ses(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_ses *g = (struct grouping_ses *)r->internal.grouping_data;
+
+    if(unlikely(!g->count || !isnormal(g->level))) {
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+        return 0.0;
+    }
+
+    return g->level;
+}
diff --git a/web/api/queries/ses/ses.h b/web/api/queries/ses/ses.h
new file mode 100644
index 000000000..603fdb57c
--- /dev/null
+++ b/web/api/queries/ses/ses.h
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_QUERIES_SES_H
+#define NETDATA_API_QUERIES_SES_H
+
+#include "../query.h"
+#include "../rrdr.h"
+
+extern void grouping_init_ses(void);
+
+extern void *grouping_create_ses(RRDR *r);
+extern void grouping_reset_ses(RRDR *r);
+extern void grouping_free_ses(RRDR *r);
+extern void grouping_add_ses(RRDR *r, calculated_number value);
+extern calculated_number grouping_flush_ses(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+
+#endif //NETDATA_API_QUERIES_SES_H
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new file mode 100644
index 000000000..19554bed8
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+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+	      install; \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
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+distclean: distclean-am
+	-rm -f Makefile
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+dvi: dvi-am
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+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
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+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
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diff --git a/web/api/queries/stddev/README.md b/web/api/queries/stddev/README.md
new file mode 100644
index 000000000..3436ff834
--- /dev/null
+++ b/web/api/queries/stddev/README.md
@@ -0,0 +1,87 @@
+
+# standard deviation (`stddev`)
+
+The standard deviation is a measure that is used to quantify the amount of variation or dispersion
+of a set of data values.
+
+A low standard deviation indicates that the data points tend to be close to the mean (also called the
+expected value) of the set, while a high standard deviation indicates that the data points are spread
+out over a wider range of values.
+
+## how to use
+
+Use it in alarms like this:
+
+```
+ alarm: my_alarm
+    on: my_chart
+lookup: stddev -1m unaligned of my_dimension
+  warn: $this > 1000
+```
+
+`stdev` does not change the units. For example, if the chart units is `requests/sec`, the standard
+deviation will be again expressed in the same units. 
+
+It can also be used in APIs and badges as `&group=stddev` in the URL.
+
+## Examples
+
+Examining last 1 minute `successful` web server responses:
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=stddev&after=-60&label=standard+deviation&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=max&after=-60&label=max)
+
+## References
+
+Check [https://en.wikipedia.org/wiki/Standard_deviation](https://en.wikipedia.org/wiki/Standard_deviation).
+
+---
+
+# Coefficient of variation (`cv`)
+
+> This query is also available as `rsd`.
+
+The coefficient of variation (`cv`), also known as relative standard deviation (`rsd`),
+is a standardized measure of dispersion of a probability distribution or frequency distribution.
+
+It is defined as the ratio of the **standard deviation** to the **mean**.  
+
+In simple terms, it gives the percentage of change. So, if the average value of a metric is 1000
+and its standard deviation is 100 (meaning that it variates from 900 to 1100), then `cv` is 10%.
+
+This is an easy way to check the % variation, without using absolute values.
+
+For example, you may trigger an alarm if your web server requests/sec `cv` is above 20 (`%`)
+over the last minute. So if your web server was serving 1000 reqs/sec over the last minute,
+it will trigger the alarm if had spikes below 800/sec or above 1200/sec.
+
+## how to use
+
+Use it in alarms like this:
+
+```
+ alarm: my_alarm
+    on: my_chart
+lookup: cv -1m unaligned of my_dimension
+ units: %
+  warn: $this > 20
+```
+
+The units reported by `cv` is always `%`.
+
+It can also be used in APIs and badges as `&group=cv` in the URL.
+
+## Examples
+
+Examining last 1 minute `successful` web server responses:
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=cv&after=-60&label=coefficient+of+variation&value_color=orange&units=pcent)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=max&after=-60&label=max)
+
+## References
+
+Check [https://en.wikipedia.org/wiki/Coefficient_of_variation](https://en.wikipedia.org/wiki/Coefficient_of_variation).
diff --git a/web/api/queries/stddev/stddev.c b/web/api/queries/stddev/stddev.c
new file mode 100644
index 000000000..3858003d9
--- /dev/null
+++ b/web/api/queries/stddev/stddev.c
@@ -0,0 +1,178 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "stddev.h"
+
+
+// ----------------------------------------------------------------------------
+// stddev
+
+// this implementation comes from:
+// https://www.johndcook.com/blog/standard_deviation/
+
+struct grouping_stddev {
+    long count;
+    calculated_number m_oldM, m_newM, m_oldS, m_newS;
+};
+
+void *grouping_create_stddev(RRDR *r) {
+    long entries = r->group;
+    if(entries < 0) entries = 0;
+
+    return callocz(1, sizeof(struct grouping_stddev) + entries * sizeof(LONG_DOUBLE));
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+void grouping_reset_stddev(RRDR *r) {
+    struct grouping_stddev *g = (struct grouping_stddev *)r->internal.grouping_data;
+    g->count = 0;
+}
+
+void grouping_free_stddev(RRDR *r) {
+    freez(r->internal.grouping_data);
+    r->internal.grouping_data = NULL;
+}
+
+void grouping_add_stddev(RRDR *r, calculated_number value) {
+    struct grouping_stddev *g = (struct grouping_stddev *)r->internal.grouping_data;
+
+    if(isnormal(value)) {
+        g->count++;
+
+        // See Knuth TAOCP vol 2, 3rd edition, page 232
+        if (g->count == 1) {
+            g->m_oldM = g->m_newM = value;
+            g->m_oldS = 0.0;
+        }
+        else {
+            g->m_newM = g->m_oldM + (value - g->m_oldM) / g->count;
+            g->m_newS = g->m_oldS + (value - g->m_oldM) * (value - g->m_newM);
+
+            // set up for next iteration
+            g->m_oldM = g->m_newM;
+            g->m_oldS = g->m_newS;
+        }
+    }
+}
+
+static inline calculated_number mean(struct grouping_stddev *g) {
+    return (g->count > 0) ? g->m_newM : 0.0;
+}
+
+static inline calculated_number variance(struct grouping_stddev *g) {
+    return ( (g->count > 1) ? g->m_newS/(g->count - 1) : 0.0 );
+}
+static inline calculated_number stddev(struct grouping_stddev *g) {
+    return sqrtl(variance(g));
+}
+
+calculated_number grouping_flush_stddev(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_stddev *g = (struct grouping_stddev *)r->internal.grouping_data;
+
+    calculated_number value;
+
+    if(likely(g->count > 1)) {
+        value = stddev(g);
+
+        if(!isnormal(value)) {
+            value = 0.0;
+            *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+        }
+    }
+    else if(g->count == 1) {
+        value = 0.0;
+    }
+    else {
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+
+    grouping_reset_stddev(r);
+
+    return  value;
+}
+
+// https://en.wikipedia.org/wiki/Coefficient_of_variation
+calculated_number grouping_flush_coefficient_of_variation(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_stddev *g = (struct grouping_stddev *)r->internal.grouping_data;
+
+    calculated_number value;
+
+    if(likely(g->count > 1)) {
+        calculated_number m = mean(g);
+        value = 100.0 * stddev(g) / ((m < 0)? -m : m);
+
+        if(unlikely(!isnormal(value))) {
+            value = 0.0;
+            *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+        }
+    }
+    else if(g->count == 1) {
+        // one value collected
+        value = 0.0;
+    }
+    else {
+        // no values collected
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+
+    grouping_reset_stddev(r);
+
+    return  value;
+}
+
+
+/*
+ * Mean = average
+ *
+calculated_number grouping_flush_mean(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_stddev *g = (struct grouping_stddev *)r->internal.grouping_data;
+
+    calculated_number value;
+
+    if(unlikely(!g->count)) {
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+    else {
+        value = mean(g);
+
+        if(!isnormal(value)) {
+            value = 0.0;
+            *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+        }
+    }
+
+    grouping_reset_stddev(r);
+
+    return  value;
+}
+ */
+
+/*
+ * It is not advised to use this version of variance directly
+ *
+calculated_number grouping_flush_variance(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_stddev *g = (struct grouping_stddev *)r->internal.grouping_data;
+
+    calculated_number value;
+
+    if(unlikely(!g->count)) {
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+    else {
+        value = variance(g);
+
+        if(!isnormal(value)) {
+            value = 0.0;
+            *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+        }
+    }
+
+    grouping_reset_stddev(r);
+
+    return  value;
+}
+*/
\ No newline at end of file
diff --git a/web/api/queries/stddev/stddev.h b/web/api/queries/stddev/stddev.h
new file mode 100644
index 000000000..7a4697572
--- /dev/null
+++ b/web/api/queries/stddev/stddev.h
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_QUERIES_STDDEV_H
+#define NETDATA_API_QUERIES_STDDEV_H
+
+#include "../query.h"
+#include "../rrdr.h"
+
+extern void *grouping_create_stddev(RRDR *r);
+extern void grouping_reset_stddev(RRDR *r);
+extern void grouping_free_stddev(RRDR *r);
+extern void grouping_add_stddev(RRDR *r, calculated_number value);
+extern calculated_number grouping_flush_stddev(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+extern calculated_number grouping_flush_coefficient_of_variation(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+// extern calculated_number grouping_flush_mean(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+// extern calculated_number grouping_flush_variance(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+
+#endif //NETDATA_API_QUERIES_STDDEV_H
diff --git a/web/api/queries/sum/Makefile.am b/web/api/queries/sum/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/queries/sum/Makefile.am
@@ -0,0 +1,8 @@
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new file mode 100644
index 000000000..56dfb2d75
--- /dev/null
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@@ -0,0 +1,464 @@
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+OPTIONAL_LIBCAP_LIBS = @OPTIONAL_LIBCAP_LIBS@
+OPTIONAL_MATH_CLFAGS = @OPTIONAL_MATH_CLFAGS@
+OPTIONAL_MATH_LIBS = @OPTIONAL_MATH_LIBS@
+OPTIONAL_NFACCT_CLFAGS = @OPTIONAL_NFACCT_CLFAGS@
+OPTIONAL_NFACCT_LIBS = @OPTIONAL_NFACCT_LIBS@
+OPTIONAL_UUID_CLFAGS = @OPTIONAL_UUID_CLFAGS@
+OPTIONAL_UUID_LIBS = @OPTIONAL_UUID_LIBS@
+OPTIONAL_ZLIB_CLFAGS = @OPTIONAL_ZLIB_CLFAGS@
+OPTIONAL_ZLIB_LIBS = @OPTIONAL_ZLIB_LIBS@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_RPM_RELEASE = @PACKAGE_RPM_RELEASE@
+PACKAGE_RPM_VERSION = @PACKAGE_RPM_VERSION@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PTHREAD_CC = @PTHREAD_CC@
+PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
+PTHREAD_LIBS = @PTHREAD_LIBS@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SSE_CANDIDATE = @SSE_CANDIDATE@
+STRIP = @STRIP@
+UUID_CFLAGS = @UUID_CFLAGS@
+UUID_LIBS = @UUID_LIBS@
+VERSION = @VERSION@
+ZLIB_CFLAGS = @ZLIB_CFLAGS@
+ZLIB_LIBS = @ZLIB_LIBS@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_CC = @ac_ct_CC@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+ax_pthread_config = @ax_pthread_config@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_target = @build_target@
+build_vendor = @build_vendor@
+builddir = @builddir@
+cachedir = @cachedir@
+chartsdir = @chartsdir@
+configdir = @configdir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+has_jemalloc = @has_jemalloc@
+has_tcmalloc = @has_tcmalloc@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libconfigdir = @libconfigdir@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+logdir = @logdir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+nodedir = @nodedir@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+pluginsdir = @pluginsdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+pythondir = @pythondir@
+registrydir = @registrydir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+varlibdir = @varlibdir@
+webdir = @webdir@
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu web/api/queries/sum/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu web/api/queries/sum/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
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+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/web/api/queries/sum/README.md b/web/api/queries/sum/README.md
new file mode 100644
index 000000000..be6596080
--- /dev/null
+++ b/web/api/queries/sum/README.md
@@ -0,0 +1,34 @@
+# Sum
+
+This module sums all the values in the time-frame requested.
+
+You can use `sum` to find the volume of something over a period.
+
+## how to use
+
+Use it in alarms like this:
+
+```
+ alarm: my_alarm
+    on: my_chart
+lookup: sum -1m unaligned of my_dimension
+  warn: $this > 1000
+```
+
+`sum` does not change the units. For example, if the chart units is `requests/sec`, the result
+will be again expressed in the same units. 
+
+It can also be used in APIs and badges as `&group=sum` in the URL.
+
+## Examples
+
+Examining last 1 minute `successful` web server responses:
+
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=sum&after=-60&label=1m+sum&value_color=orange&units=requests)
+
+## References
+
+- [https://en.wikipedia.org/wiki/Summation](https://en.wikipedia.org/wiki/Summation).
diff --git a/web/api/queries/sum/sum.c b/web/api/queries/sum/sum.c
new file mode 100644
index 000000000..0da9937a3
--- /dev/null
+++ b/web/api/queries/sum/sum.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "sum.h"
+
+// ----------------------------------------------------------------------------
+// sum
+
+struct grouping_sum {
+    calculated_number sum;
+    size_t count;
+};
+
+void *grouping_create_sum(RRDR *r) {
+    (void)r;
+    return callocz(1, sizeof(struct grouping_sum));
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+void grouping_reset_sum(RRDR *r) {
+    struct grouping_sum *g = (struct grouping_sum *)r->internal.grouping_data;
+    g->sum = 0;
+    g->count = 0;
+}
+
+void grouping_free_sum(RRDR *r) {
+    freez(r->internal.grouping_data);
+    r->internal.grouping_data = NULL;
+}
+
+void grouping_add_sum(RRDR *r, calculated_number value) {
+    if(!isnan(value)) {
+        struct grouping_sum *g = (struct grouping_sum *)r->internal.grouping_data;
+        g->sum += value;
+        g->count++;
+    }
+}
+
+calculated_number grouping_flush_sum(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct grouping_sum *g = (struct grouping_sum *)r->internal.grouping_data;
+
+    calculated_number value;
+
+    if(unlikely(!g->count)) {
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+    else {
+        value = g->sum;
+    }
+
+    g->sum = 0.0;
+    g->count = 0;
+
+    return value;
+}
+
+
diff --git a/web/api/queries/sum/sum.h b/web/api/queries/sum/sum.h
new file mode 100644
index 000000000..9dc8d209c
--- /dev/null
+++ b/web/api/queries/sum/sum.h
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_QUERY_SUM_H
+#define NETDATA_API_QUERY_SUM_H
+
+#include "../query.h"
+#include "../rrdr.h"
+
+extern void *grouping_create_sum(RRDR *r);
+extern void grouping_reset_sum(RRDR *r);
+extern void grouping_free_sum(RRDR *r);
+extern void grouping_add_sum(RRDR *r, calculated_number value);
+extern calculated_number grouping_flush_sum(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+
+#endif //NETDATA_API_QUERY_SUM_H
diff --git a/src/web_api_v1.c b/web/api/web_api_v1.c
index c32660c81..1e03828e4 100644
--- a/src/web_api_v1.c
+++ b/web/api/web_api_v1.c
@@ -1,23 +1,11 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
 
-static struct {
-    const char *name;
-    uint32_t hash;
-    int value;
-} api_v1_data_groups[] = {
-        {  "average"        , 0    , GROUP_AVERAGE}
-        , {"min"            , 0    , GROUP_MIN}
-        , {"max"            , 0    , GROUP_MAX}
-        , {"sum"            , 0    , GROUP_SUM}
-        , {"incremental_sum", 0    , GROUP_INCREMENTAL_SUM}
-        , {"incremental-sum", 0    , GROUP_INCREMENTAL_SUM}
-        , {                 NULL, 0, 0}
-};
+#include "web_api_v1.h"
 
 static struct {
     const char *name;
     uint32_t hash;
-    uint32_t value;
+    RRDR_OPTIONS value;
 } api_v1_data_options[] = {
         {  "nonzero"         , 0    , RRDR_OPTION_NONZERO}
         , {"flip"            , 0    , RRDR_OPTION_REVERSED}
@@ -64,6 +52,7 @@ static struct {
         , {DATASOURCE_FORMAT_JS_ARRAY       , 0 , DATASOURCE_JS_ARRAY}
         , {DATASOURCE_FORMAT_SSV_COMMA      , 0 , DATASOURCE_SSV_COMMA}
         , {DATASOURCE_FORMAT_CSV_JSON_ARRAY , 0 , DATASOURCE_CSV_JSON_ARRAY}
+        , {DATASOURCE_FORMAT_CSV_MARKDOWN   , 0 , DATASOURCE_CSV_MARKDOWN}
         , {                                 NULL, 0, 0}
 };
 
@@ -84,9 +73,6 @@ static struct {
 void web_client_api_v1_init(void) {
     int i;
 
-    for(i = 0; api_v1_data_groups[i].name ; i++)
-        api_v1_data_groups[i].hash = simple_hash(api_v1_data_groups[i].name);
-
     for(i = 0; api_v1_data_options[i].name ; i++)
         api_v1_data_options[i].hash = simple_hash(api_v1_data_options[i].name);
 
@@ -95,17 +81,8 @@ void web_client_api_v1_init(void) {
 
     for(i = 0; api_v1_data_google_formats[i].name ; i++)
         api_v1_data_google_formats[i].hash = simple_hash(api_v1_data_google_formats[i].name);
-}
-
-inline int web_client_api_request_v1_data_group(char *name, int def) {
-    int i;
 
-    uint32_t hash = simple_hash(name);
-    for(i = 0; api_v1_data_groups[i].name ; i++)
-        if(unlikely(hash == api_v1_data_groups[i].hash && !strcmp(name, api_v1_data_groups[i].name)))
-            return api_v1_data_groups[i].value;
-
-    return def;
+    web_client_api_v1_init_grouping();
 }
 
 inline uint32_t web_client_api_request_v1_data_options(char *o) {
@@ -248,358 +225,21 @@ inline int web_client_api_request_v1_charts(RRDHOST *host, struct web_client *w,
 
     buffer_flush(w->response.data);
     w->response.data->contenttype = CT_APPLICATION_JSON;
-    rrd_stats_api_v1_charts(host, w->response.data);
+    charts2json(host, w->response.data);
     return 200;
 }
 
-inline int web_client_api_request_v1_allmetrics(RRDHOST *host, struct web_client *w, char *url) {
-    int format = ALLMETRICS_SHELL;
-    int help = 0, types = 0, timestamps = 1, names = backend_send_names; // prometheus options
-    const char *prometheus_server = w->client_ip;
-    uint32_t prometheus_options = backend_options;
-    const char *prometheus_prefix = backend_prefix;
-
-    while(url) {
-        char *value = mystrsep(&url, "?&");
-        if (!value || !*value) continue;
-
-        char *name = mystrsep(&value, "=");
-        if(!name || !*name) continue;
-        if(!value || !*value) continue;
-
-        if(!strcmp(name, "format")) {
-            if(!strcmp(value, ALLMETRICS_FORMAT_SHELL))
-                format = ALLMETRICS_SHELL;
-            else if(!strcmp(value, ALLMETRICS_FORMAT_PROMETHEUS))
-                format = ALLMETRICS_PROMETHEUS;
-            else if(!strcmp(value, ALLMETRICS_FORMAT_PROMETHEUS_ALL_HOSTS))
-                format = ALLMETRICS_PROMETHEUS_ALL_HOSTS;
-            else if(!strcmp(value, ALLMETRICS_FORMAT_JSON))
-                format = ALLMETRICS_JSON;
-            else
-                format = 0;
-        }
-        else if(!strcmp(name, "help")) {
-            if(!strcmp(value, "yes"))
-                help = 1;
-            else
-                help = 0;
-        }
-        else if(!strcmp(name, "types")) {
-            if(!strcmp(value, "yes"))
-                types = 1;
-            else
-                types = 0;
-        }
-        else if(!strcmp(name, "names")) {
-            if(!strcmp(value, "yes"))
-                names = 1;
-            else
-                names = 0;
-        }
-        else if(!strcmp(name, "timestamps")) {
-            if(!strcmp(value, "yes"))
-                timestamps = 1;
-            else
-                timestamps = 0;
-        }
-        else if(!strcmp(name, "server")) {
-            prometheus_server = value;
-        }
-        else if(!strcmp(name, "prefix")) {
-            prometheus_prefix = value;
-        }
-        else if(!strcmp(name, "data") || !strcmp(name, "source") || !strcmp(name, "data source") || !strcmp(name, "data-source") || !strcmp(name, "data_source") || !strcmp(name, "datasource")) {
-            prometheus_options = backend_parse_data_source(value, prometheus_options);
-        }
-    }
-
-    buffer_flush(w->response.data);
-    buffer_no_cacheable(w->response.data);
-
-    switch(format) {
-        case ALLMETRICS_JSON:
-            w->response.data->contenttype = CT_APPLICATION_JSON;
-            rrd_stats_api_v1_charts_allmetrics_json(host, w->response.data);
-            return 200;
-
-        case ALLMETRICS_SHELL:
-            w->response.data->contenttype = CT_TEXT_PLAIN;
-            rrd_stats_api_v1_charts_allmetrics_shell(host, w->response.data);
-            return 200;
-
-        case ALLMETRICS_PROMETHEUS:
-            w->response.data->contenttype = CT_PROMETHEUS;
-            rrd_stats_api_v1_charts_allmetrics_prometheus_single_host(host, w->response.data, prometheus_server, prometheus_prefix, prometheus_options, help, types, names, timestamps);
-            return 200;
-
-        case ALLMETRICS_PROMETHEUS_ALL_HOSTS:
-            w->response.data->contenttype = CT_PROMETHEUS;
-            rrd_stats_api_v1_charts_allmetrics_prometheus_all_hosts(host, w->response.data, prometheus_server, prometheus_prefix, prometheus_options, help, types, names, timestamps);
-            return 200;
-
-        default:
-            w->response.data->contenttype = CT_TEXT_PLAIN;
-            buffer_strcat(w->response.data, "Which format? '" ALLMETRICS_FORMAT_SHELL "', '" ALLMETRICS_FORMAT_PROMETHEUS "', '" ALLMETRICS_FORMAT_PROMETHEUS_ALL_HOSTS "' and '" ALLMETRICS_FORMAT_JSON "' are currently supported.");
-            return 400;
-    }
-}
-
 inline int web_client_api_request_v1_chart(RRDHOST *host, struct web_client *w, char *url) {
     return web_client_api_request_single_chart(host, w, url, rrd_stats_api_v1_chart);
 }
 
-int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *url) {
-    int ret = 400;
-    buffer_flush(w->response.data);
-
-    BUFFER *dimensions = NULL;
-
-    const char *chart = NULL
-    , *before_str = NULL
-    , *after_str = NULL
-    , *points_str = NULL
-    , *multiply_str = NULL
-    , *divide_str = NULL
-    , *label = NULL
-    , *units = NULL
-    , *label_color = NULL
-    , *value_color = NULL
-    , *refresh_str = NULL
-    , *precision_str = NULL
-    , *scale_str = NULL
-    , *alarm = NULL;
-
-    int group = GROUP_AVERAGE;
-    uint32_t options = 0x00000000;
-
-    while(url) {
-        char *value = mystrsep(&url, "/?&");
-        if(!value || !*value) continue;
-
-        char *name = mystrsep(&value, "=");
-        if(!name || !*name) continue;
-        if(!value || !*value) continue;
-
-        debug(D_WEB_CLIENT, "%llu: API v1 badge.svg query param '%s' with value '%s'", w->id, name, value);
-
-        // name and value are now the parameters
-        // they are not null and not empty
-
-        if(!strcmp(name, "chart")) chart = value;
-        else if(!strcmp(name, "dimension") || !strcmp(name, "dim") || !strcmp(name, "dimensions") || !strcmp(name, "dims")) {
-            if(!dimensions)
-                dimensions = buffer_create(100);
-
-            buffer_strcat(dimensions, "|");
-            buffer_strcat(dimensions, value);
-        }
-        else if(!strcmp(name, "after")) after_str = value;
-        else if(!strcmp(name, "before")) before_str = value;
-        else if(!strcmp(name, "points")) points_str = value;
-        else if(!strcmp(name, "group")) {
-            group = web_client_api_request_v1_data_group(value, GROUP_AVERAGE);
-        }
-        else if(!strcmp(name, "options")) {
-            options |= web_client_api_request_v1_data_options(value);
-        }
-        else if(!strcmp(name, "label")) label = value;
-        else if(!strcmp(name, "units")) units = value;
-        else if(!strcmp(name, "label_color")) label_color = value;
-        else if(!strcmp(name, "value_color")) value_color = value;
-        else if(!strcmp(name, "multiply")) multiply_str = value;
-        else if(!strcmp(name, "divide")) divide_str = value;
-        else if(!strcmp(name, "refresh")) refresh_str = value;
-        else if(!strcmp(name, "precision")) precision_str = value;
-        else if(!strcmp(name, "scale")) scale_str = value;
-        else if(!strcmp(name, "alarm")) alarm = value;
-    }
-
-    if(!chart || !*chart) {
-        buffer_no_cacheable(w->response.data);
-        buffer_sprintf(w->response.data, "No chart id is given at the request.");
-        goto cleanup;
-    }
-
-    int scale = (scale_str && *scale_str)?str2i(scale_str):100;
-
-    RRDSET *st = rrdset_find(host, chart);
-    if(!st) st = rrdset_find_byname(host, chart);
-    if(!st) {
-        buffer_no_cacheable(w->response.data);
-        buffer_svg(w->response.data, "chart not found", NAN, "", NULL, NULL, -1, scale, 0);
-        ret = 200;
-        goto cleanup;
-    }
-    st->last_accessed_time = now_realtime_sec();
-
-    RRDCALC *rc = NULL;
-    if(alarm) {
-        rc = rrdcalc_find(st, alarm);
-        if (!rc) {
-            buffer_no_cacheable(w->response.data);
-            buffer_svg(w->response.data, "alarm not found", NAN, "", NULL, NULL, -1, scale, 0);
-            ret = 200;
-            goto cleanup;
-        }
-    }
-
-    long long multiply  = (multiply_str  && *multiply_str )?str2l(multiply_str):1;
-    long long divide    = (divide_str    && *divide_str   )?str2l(divide_str):1;
-    long long before    = (before_str    && *before_str   )?str2l(before_str):0;
-    long long after     = (after_str     && *after_str    )?str2l(after_str):-st->update_every;
-    int       points    = (points_str    && *points_str   )?str2i(points_str):1;
-    int       precision = (precision_str && *precision_str)?str2i(precision_str):-1;
-
-    if(!multiply) multiply = 1;
-    if(!divide) divide = 1;
-
-    int refresh = 0;
-    if(refresh_str && *refresh_str) {
-        if(!strcmp(refresh_str, "auto")) {
-            if(rc) refresh = rc->update_every;
-            else if(options & RRDR_OPTION_NOT_ALIGNED)
-                refresh = st->update_every;
-            else {
-                refresh = (int)(before - after);
-                if(refresh < 0) refresh = -refresh;
-            }
-        }
-        else {
-            refresh = str2i(refresh_str);
-            if(refresh < 0) refresh = -refresh;
-        }
-    }
-
-    if(!label) {
-        if(alarm) {
-            char *s = (char *)alarm;
-            while(*s) {
-                if(*s == '_') *s = ' ';
-                s++;
-            }
-            label = alarm;
-        }
-        else if(dimensions) {
-            const char *dim = buffer_tostring(dimensions);
-            if(*dim == '|') dim++;
-            label = dim;
-        }
-        else
-            label = st->name;
-    }
-    if(!units) {
-        if(alarm) {
-            if(rc->units)
-                units = rc->units;
-            else
-                units = "";
-        }
-        else if(options & RRDR_OPTION_PERCENTAGE)
-            units = "%";
-        else
-            units = st->units;
-    }
-
-    debug(D_WEB_CLIENT, "%llu: API command 'badge.svg' for chart '%s', alarm '%s', dimensions '%s', after '%lld', before '%lld', points '%d', group '%d', options '0x%08x'"
-          , w->id
-          , chart
-          , alarm?alarm:""
-          , (dimensions)?buffer_tostring(dimensions):""
-          , after
-          , before
-          , points
-          , group
-          , options
-    );
-
-    if(rc) {
-        if (refresh > 0) {
-            buffer_sprintf(w->response.header, "Refresh: %d\r\n", refresh);
-            w->response.data->expires = now_realtime_sec() + refresh;
-        }
-        else buffer_no_cacheable(w->response.data);
-
-        if(!value_color) {
-            switch(rc->status) {
-                case RRDCALC_STATUS_CRITICAL:
-                    value_color = "red";
-                    break;
-
-                case RRDCALC_STATUS_WARNING:
-                    value_color = "orange";
-                    break;
+void fix_google_param(char *s) {
+    if(unlikely(!s)) return;
 
-                case RRDCALC_STATUS_CLEAR:
-                    value_color = "brightgreen";
-                    break;
-
-                case RRDCALC_STATUS_UNDEFINED:
-                    value_color = "lightgrey";
-                    break;
-
-                case RRDCALC_STATUS_UNINITIALIZED:
-                    value_color = "#000";
-                    break;
-
-                default:
-                    value_color = "grey";
-                    break;
-            }
-        }
-
-        buffer_svg(w->response.data,
-                label,
-                (isnan(rc->value)||isinf(rc->value)) ? rc->value : rc->value * multiply / divide,
-                units,
-                label_color,
-                value_color,
-                precision,
-                scale,
-                options
-        );
-        ret = 200;
+    for( ; *s ;s++) {
+        if(!isalnum(*s) && *s != '.' && *s != '_' && *s != '-')
+            *s = '_';
     }
-    else {
-        time_t latest_timestamp = 0;
-        int value_is_null = 1;
-        calculated_number n = NAN;
-        ret = 500;
-
-        // if the collected value is too old, don't calculate its value
-        if (rrdset_last_entry_t(st) >= (now_realtime_sec() - (st->update_every * st->gap_when_lost_iterations_above)))
-            ret = rrdset2value_api_v1(st, w->response.data, &n, (dimensions) ? buffer_tostring(dimensions) : NULL
-                                      , points, after, before, group, 0, options, NULL, &latest_timestamp, &value_is_null);
-
-        // if the value cannot be calculated, show empty badge
-        if (ret != 200) {
-            buffer_no_cacheable(w->response.data);
-            value_is_null = 1;
-            n = 0;
-            ret = 200;
-        }
-        else if (refresh > 0) {
-            buffer_sprintf(w->response.header, "Refresh: %d\r\n", refresh);
-            w->response.data->expires = now_realtime_sec() + refresh;
-        }
-        else buffer_no_cacheable(w->response.data);
-
-        // render the badge
-        buffer_svg(w->response.data,
-                label,
-                (value_is_null)?NAN:(n * multiply / divide),
-                units,
-                label_color,
-                value_color,
-                precision,
-                scale,
-                options
-        );
-    }
-
-    cleanup:
-    buffer_free(dimensions);
-    return ret;
 }
 
 // returns the HTTP code
@@ -626,7 +266,7 @@ inline int web_client_api_request_v1_data(RRDHOST *host, struct web_client *w, c
     , *group_time_str = NULL
     , *points_str = NULL;
 
-    int group = GROUP_AVERAGE;
+    int group = RRDR_GROUPING_AVERAGE;
     uint32_t format = DATASOURCE_JSON;
     uint32_t options = 0x00000000;
 
@@ -654,7 +294,7 @@ inline int web_client_api_request_v1_data(RRDHOST *host, struct web_client *w, c
         else if(!strcmp(name, "points")) points_str = value;
         else if(!strcmp(name, "gtime")) group_time_str = value;
         else if(!strcmp(name, "group")) {
-            group = web_client_api_request_v1_data_group(value, GROUP_AVERAGE);
+            group = web_client_api_request_v1_data_group(value, RRDR_GROUPING_AVERAGE);
         }
         else if(!strcmp(name, "format")) {
             format = web_client_api_request_v1_data_format(value);
@@ -701,6 +341,14 @@ inline int web_client_api_request_v1_data(RRDHOST *host, struct web_client *w, c
         }
     }
 
+    // validate the google parameters given
+    fix_google_param(google_out);
+    fix_google_param(google_sig);
+    fix_google_param(google_reqId);
+    fix_google_param(google_version);
+    fix_google_param(responseHandler);
+    fix_google_param(outFileName);
+
     if(!chart || !*chart) {
         buffer_sprintf(w->response.data, "No chart id is given at the request.");
         goto cleanup;
@@ -808,7 +456,7 @@ inline int web_client_api_request_v1_registry(RRDHOST *host, struct web_client *
 
     debug(D_WEB_CLIENT, "%llu: API v1 registry with URL '%s'", w->id, url);
 
-    // FIXME
+    // TODO
     // The browser may send multiple cookies with our id
 
     char *cookie = strstr(w->response.data->buffer, NETDATA_REGISTRY_COOKIE_NAME "=");
diff --git a/src/web_api_v1.h b/web/api/web_api_v1.h
index 6f4de1aba..b6f315dca 100644
--- a/src/web_api_v1.h
+++ b/web/api/web_api_v1.h
@@ -1,7 +1,12 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_WEB_API_V1_H
-#define NETDATA_WEB_API_V1_H
+#define NETDATA_WEB_API_V1_H 1
+
+#include "daemon/common.h"
+#include "web/api/badges/web_buffer_svg.h"
+#include "web/api/formatters/rrd2json.h"
 
-extern int web_client_api_request_v1_data_group(char *name, int def);
 extern uint32_t web_client_api_request_v1_data_options(char *o);
 extern uint32_t web_client_api_request_v1_data_format(char *name);
 extern uint32_t web_client_api_request_v1_data_google_format(char *name);
@@ -11,9 +16,7 @@ extern int web_client_api_request_v1_alarm_log(RRDHOST *host, struct web_client
 extern int web_client_api_request_single_chart(RRDHOST *host, struct web_client *w, char *url, void callback(RRDSET *st, BUFFER *buf));
 extern int web_client_api_request_v1_alarm_variables(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_charts(RRDHOST *host, struct web_client *w, char *url);
-extern int web_client_api_request_v1_allmetrics(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_chart(RRDHOST *host, struct web_client *w, char *url);
-extern int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_data(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_registry(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1(RRDHOST *host, struct web_client *w, char *url);
diff --git a/web/gui/Makefile.am b/web/gui/Makefile.am
new file mode 100644
index 000000000..314ca3773
--- /dev/null
+++ b/web/gui/Makefile.am
@@ -0,0 +1,123 @@
+#
+# Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+MAINTAINERCLEANFILES= $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+dist_web_DATA = \
+	demo.html \
+	demo2.html \
+	demosites.html \
+	demosites2.html \
+	dashboard.html \
+	dashboard.js \
+	dashboard_info.js \
+	dashboard_info_custom_example.js \
+	dashboard.css \
+	dashboard.slate.css \
+	favicon.ico \
+	goto-host-from-alarm.html \
+	index.html \
+	infographic.html \
+	robots.txt \
+	refresh-badges.js \
+	registry.html \
+	sitemap.xml \
+	tv.html \
+	version.txt \
+	$(NULL)
+
+weblibdir=$(webdir)/lib
+dist_weblib_DATA = \
+	lib/bootstrap-3.3.7.min.js \
+	lib/bootstrap-slider-10.0.0.min.js \
+	lib/bootstrap-table-1.11.0.min.js \
+	lib/bootstrap-table-export-1.11.0.min.js \
+	lib/bootstrap-toggle-2.2.2.min.js \
+	lib/clipboard-polyfill-be05dad.js \
+	lib/c3-0.4.18.min.js \
+	lib/d3-4.12.2.min.js \
+	lib/d3pie-0.2.1-netdata-3.js \
+	lib/dygraph-c91c859.min.js \
+	lib/dygraph-smooth-plotter-c91c859.js \
+	lib/fontawesome-all-5.0.1.min.js \
+	lib/gauge-1.3.2.min.js \
+	lib/jquery-2.2.4.min.js \
+	lib/jquery.easypiechart-97b5824.min.js \
+	lib/jquery.peity-3.2.0.min.js \
+	lib/jquery.sparkline-2.1.2.min.js \
+	lib/lz-string-1.4.4.min.js \
+	lib/morris-0.5.1.min.js \
+	lib/pako-1.0.6.min.js \
+	lib/perfect-scrollbar-0.6.15.min.js \
+	lib/raphael-2.2.4-min.js \
+	lib/tableExport-1.6.0.min.js \
+	$(NULL)
+
+webcssdir=$(webdir)/css
+dist_webcss_DATA = \
+	css/morris-0.5.1.css \
+	css/bootstrap-3.3.7.css \
+	css/bootstrap-theme-3.3.7.min.css \
+	css/bootstrap-slate-flat-3.3.7.css \
+	css/bootstrap-slider-10.0.0.min.css \
+	css/bootstrap-toggle-2.2.2.min.css \
+	css/c3-0.4.18.min.css \
+	$(NULL)
+
+webfontsdir=$(webdir)/fonts
+dist_webfonts_DATA = \
+	fonts/glyphicons-halflings-regular.eot \
+	fonts/glyphicons-halflings-regular.svg \
+	fonts/glyphicons-halflings-regular.ttf \
+	fonts/glyphicons-halflings-regular.woff \
+	fonts/glyphicons-halflings-regular.woff2 \
+	$(NULL)
+
+webimagesdir=$(webdir)/images
+dist_webimages_DATA = \
+	images/alert-128-orange.png \
+	images/alert-128-red.png \
+	images/alert-multi-size-orange.ico \
+	images/alert-multi-size-red.ico \
+	images/animated.gif \
+	images/check-mark-2-128-green.png \
+	images/check-mark-2-multi-size-green.ico \
+	images/netdata.svg \
+	images/post.png \
+	images/seo-performance-16.png \
+	images/seo-performance-24.png \
+	images/seo-performance-32.png \
+	images/seo-performance-48.png \
+	images/seo-performance-64.png \
+	images/seo-performance-72.png \
+	images/seo-performance-114.png \
+	images/seo-performance-128.png \
+	images/seo-performance-256.png \
+	images/seo-performance-512.png \
+	images/seo-performance-multi-size.ico \
+	images/seo-performance-multi-size.icns \
+	$(NULL)
+
+
+webwellknowndir=$(webdir)/.well-known
+dist_webwellknown_DATA = \
+	$(NULL)
+
+webdntdir=$(webdir)/.well-known/dnt
+dist_webdnt_DATA = \
+	.well-known/dnt/cookies \
+	$(NULL)
+
+version.txt:
+	if test -d "$(top_srcdir)/.git"; then \
+		git --git-dir="$(top_srcdir)/.git" log -n 1 --format=%H; \
+	fi > $@.tmp
+	test -s $@.tmp || echo 0 > $@.tmp
+	mv $@.tmp $@
+
+.PHONY: version.txt
diff --git a/conf.d/Makefile.in b/web/gui/Makefile.in
index 48ce51191..2f79809ef 100644
--- a/conf.d/Makefile.in
+++ b/web/gui/Makefile.in
@@ -78,20 +78,23 @@ PRE_UNINSTALL = :
 POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
-subdir = conf.d
+subdir = web/gui
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
-	$(dist_chartsconfig_DATA) $(dist_config_DATA) \
-	$(dist_healthconfig_DATA) $(dist_nodeconfig_DATA) \
-	$(dist_pythonconfig_DATA) $(dist_statsdconfig_DATA)
+	$(dist_noinst_DATA) $(dist_web_DATA) $(dist_webcss_DATA) \
+	$(dist_webdnt_DATA) $(dist_webfonts_DATA) \
+	$(dist_webimages_DATA) $(dist_weblib_DATA) \
+	$(dist_webwellknown_DATA)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
-	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
-	$(top_srcdir)/m4/ax_c_mallinfo.m4 \
-	$(top_srcdir)/m4/ax_c_mallopt.m4 \
-	$(top_srcdir)/m4/ax_check_compile_flag.m4 \
-	$(top_srcdir)/m4/ax_gcc_func_attribute.m4 \
-	$(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/jemalloc.m4 \
-	$(top_srcdir)/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/build/m4/ax_c___atomic.m4 \
+	$(top_srcdir)/build/m4/ax_c__generic.m4 \
+	$(top_srcdir)/build/m4/ax_c_lto.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallinfo.m4 \
+	$(top_srcdir)/build/m4/ax_c_mallopt.m4 \
+	$(top_srcdir)/build/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/build/m4/ax_gcc_func_attribute.m4 \
+	$(top_srcdir)/build/m4/ax_pthread.m4 \
+	$(top_srcdir)/build/m4/jemalloc.m4 \
+	$(top_srcdir)/build/m4/tcmalloc.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -144,13 +147,14 @@ am__uninstall_files_from_dir = { \
     || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
          $(am__cd) "$$dir" && rm -f $$files; }; \
   }
-am__installdirs = "$(DESTDIR)$(chartsconfigdir)" \
-	"$(DESTDIR)$(configdir)" "$(DESTDIR)$(healthconfigdir)" \
-	"$(DESTDIR)$(nodeconfigdir)" "$(DESTDIR)$(pythonconfigdir)" \
-	"$(DESTDIR)$(statsdconfigdir)"
-DATA = $(dist_chartsconfig_DATA) $(dist_config_DATA) \
-	$(dist_healthconfig_DATA) $(dist_nodeconfig_DATA) \
-	$(dist_pythonconfig_DATA) $(dist_statsdconfig_DATA)
+am__installdirs = "$(DESTDIR)$(webdir)" "$(DESTDIR)$(webcssdir)" \
+	"$(DESTDIR)$(webdntdir)" "$(DESTDIR)$(webfontsdir)" \
+	"$(DESTDIR)$(webimagesdir)" "$(DESTDIR)$(weblibdir)" \
+	"$(DESTDIR)$(webwellknowndir)"
+DATA = $(dist_noinst_DATA) $(dist_web_DATA) $(dist_webcss_DATA) \
+	$(dist_webdnt_DATA) $(dist_webfonts_DATA) \
+	$(dist_webimages_DATA) $(dist_weblib_DATA) \
+	$(dist_webwellknown_DATA)
 am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
@@ -250,6 +254,7 @@ build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
+build_target = @build_target@
 build_vendor = @build_vendor@
 builddir = @builddir@
 cachedir = @cachedir@
@@ -271,6 +276,7 @@ htmldir = @htmldir@
 includedir = @includedir@
 infodir = @infodir@
 install_sh = @install_sh@
+libconfigdir = @libconfigdir@
 libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
@@ -300,162 +306,116 @@ webdir = @webdir@
 
 #
 # Copyright (C) 2015 Alon Bar-Lev <alon.barlev@gmail.com>
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
-dist_config_DATA = \
-    apps_groups.conf \
-    charts.d.conf \
-    fping.conf \
-    node.d.conf \
-    python.d.conf \
-    health_alarm_notify.conf \
-    health_email_recipients.conf \
-    stream.conf \
-    $(NULL)
-
-nodeconfigdir = $(configdir)/node.d
-dist_nodeconfig_DATA = \
-    node.d/README.md \
-    node.d/fronius.conf.md \
-    node.d/named.conf.md \
-    node.d/sma_webbox.conf.md \
-    node.d/snmp.conf.md \
-    node.d/stiebeleltron.conf.md \
-    $(NULL)
-
-pythonconfigdir = $(configdir)/python.d
-dist_pythonconfig_DATA = \
-    python.d/apache.conf \
-    python.d/beanstalk.conf \
-    python.d/bind_rndc.conf \
-    python.d/ceph.conf \
-    python.d/chrony.conf \
-    python.d/couchdb.conf \
-    python.d/cpufreq.conf \
-    python.d/dns_query_time.conf \
-    python.d/dnsdist.conf \
-    python.d/dovecot.conf \
-    python.d/elasticsearch.conf \
-    python.d/example.conf \
-    python.d/exim.conf \
-    python.d/fail2ban.conf \
-    python.d/freeradius.conf \
-    python.d/go_expvar.conf \
-    python.d/haproxy.conf \
-    python.d/hddtemp.conf \
-    python.d/httpcheck.conf \
-    python.d/icecast.conf \
-    python.d/ipfs.conf \
-    python.d/isc_dhcpd.conf \
-    python.d/mdstat.conf \
-    python.d/memcached.conf \
-    python.d/mongodb.conf \
-    python.d/mysql.conf \
-    python.d/nginx.conf \
-    python.d/nginx_plus.conf \
-    python.d/nsd.conf \
-    python.d/ntpd.conf \
-    python.d/ovpn_status_log.conf \
-    python.d/phpfpm.conf \
-    python.d/portcheck.conf \
-    python.d/postfix.conf \
-    python.d/postgres.conf \
-    python.d/powerdns.conf \
-    python.d/rabbitmq.conf \
-    python.d/redis.conf \
-    python.d/retroshare.conf \
-    python.d/samba.conf \
-    python.d/sensors.conf \
-    python.d/springboot.conf \
-    python.d/squid.conf \
-    python.d/smartd_log.conf \
-    python.d/tomcat.conf \
-    python.d/traefik.conf \
-    python.d/varnish.conf \
-    python.d/web_log.conf \
-    $(NULL)
-
-healthconfigdir = $(configdir)/health.d
-dist_healthconfig_DATA = \
-    health.d/apache.conf \
-    health.d/backend.conf \
-    health.d/beanstalkd.conf \
-    health.d/bind_rndc.conf \
-    health.d/btrfs.conf \
-    health.d/ceph.conf \
-    health.d/cpu.conf \
-    health.d/couchdb.conf \
-    health.d/disks.conf \
-    health.d/elasticsearch.conf \
-    health.d/entropy.conf \
-    health.d/fping.conf \
-    health.d/fronius.conf \
-    health.d/haproxy.conf \
-    health.d/httpcheck.conf \
-    health.d/ipc.conf \
-    health.d/ipfs.conf \
-    health.d/ipmi.conf \
-    health.d/isc_dhcpd.conf \
-    health.d/lighttpd.conf \
-    health.d/mdstat.conf \
-    health.d/memcached.conf \
-    health.d/memory.conf \
-    health.d/mongodb.conf \
-    health.d/mysql.conf \
-    health.d/named.conf \
-    health.d/net.conf \
-    health.d/netfilter.conf \
-    health.d/nginx.conf \
-    health.d/nginx_plus.conf \
-    health.d/portcheck.conf \
-    health.d/postgres.conf \
-    health.d/qos.conf \
-    health.d/ram.conf \
-    health.d/redis.conf \
-    health.d/retroshare.conf \
-    health.d/softnet.conf \
-    health.d/squid.conf \
-    health.d/stiebeleltron.conf \
-    health.d/swap.conf \
-    health.d/tcp_conn.conf \
-    health.d/tcp_listen.conf \
-    health.d/tcp_mem.conf \
-    health.d/tcp_orphans.conf \
-    health.d/tcp_resets.conf \
-    health.d/udp_errors.conf \
-    health.d/varnish.conf \
-    health.d/web_log.conf \
-    health.d/zfs.conf \
-    $(NULL)
-
-chartsconfigdir = $(configdir)/charts.d
-dist_chartsconfig_DATA = \
-    charts.d/apache.conf \
-    charts.d/apcupsd.conf \
-    charts.d/cpufreq.conf \
-    charts.d/exim.conf \
-    charts.d/libreswan.conf \
-    charts.d/load_average.conf \
-    charts.d/mysql.conf \
-    charts.d/nut.conf \
-    charts.d/phpfpm.conf \
-    charts.d/sensors.conf \
-    charts.d/tomcat.conf \
-    charts.d/ap.conf \
-    charts.d/cpu_apps.conf \
-    charts.d/example.conf \
-    charts.d/hddtemp.conf \
-    charts.d/mem_apps.conf \
-    charts.d/nginx.conf \
-    charts.d/opensips.conf \
-    charts.d/postfix.conf \
-    charts.d/squid.conf \
-    $(NULL)
-
-statsdconfigdir = $(configdir)/statsd.d
-dist_statsdconfig_DATA = \
-    statsd.d/example.conf \
-    $(NULL)
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
+
+dist_web_DATA = \
+	demo.html \
+	demo2.html \
+	demosites.html \
+	demosites2.html \
+	dashboard.html \
+	dashboard.js \
+	dashboard_info.js \
+	dashboard_info_custom_example.js \
+	dashboard.css \
+	dashboard.slate.css \
+	favicon.ico \
+	goto-host-from-alarm.html \
+	index.html \
+	infographic.html \
+	robots.txt \
+	refresh-badges.js \
+	registry.html \
+	sitemap.xml \
+	tv.html \
+	version.txt \
+	$(NULL)
+
+weblibdir = $(webdir)/lib
+dist_weblib_DATA = \
+	lib/bootstrap-3.3.7.min.js \
+	lib/bootstrap-slider-10.0.0.min.js \
+	lib/bootstrap-table-1.11.0.min.js \
+	lib/bootstrap-table-export-1.11.0.min.js \
+	lib/bootstrap-toggle-2.2.2.min.js \
+	lib/clipboard-polyfill-be05dad.js \
+	lib/c3-0.4.18.min.js \
+	lib/d3-4.12.2.min.js \
+	lib/d3pie-0.2.1-netdata-3.js \
+	lib/dygraph-c91c859.min.js \
+	lib/dygraph-smooth-plotter-c91c859.js \
+	lib/fontawesome-all-5.0.1.min.js \
+	lib/gauge-1.3.2.min.js \
+	lib/jquery-2.2.4.min.js \
+	lib/jquery.easypiechart-97b5824.min.js \
+	lib/jquery.peity-3.2.0.min.js \
+	lib/jquery.sparkline-2.1.2.min.js \
+	lib/lz-string-1.4.4.min.js \
+	lib/morris-0.5.1.min.js \
+	lib/pako-1.0.6.min.js \
+	lib/perfect-scrollbar-0.6.15.min.js \
+	lib/raphael-2.2.4-min.js \
+	lib/tableExport-1.6.0.min.js \
+	$(NULL)
+
+webcssdir = $(webdir)/css
+dist_webcss_DATA = \
+	css/morris-0.5.1.css \
+	css/bootstrap-3.3.7.css \
+	css/bootstrap-theme-3.3.7.min.css \
+	css/bootstrap-slate-flat-3.3.7.css \
+	css/bootstrap-slider-10.0.0.min.css \
+	css/bootstrap-toggle-2.2.2.min.css \
+	css/c3-0.4.18.min.css \
+	$(NULL)
+
+webfontsdir = $(webdir)/fonts
+dist_webfonts_DATA = \
+	fonts/glyphicons-halflings-regular.eot \
+	fonts/glyphicons-halflings-regular.svg \
+	fonts/glyphicons-halflings-regular.ttf \
+	fonts/glyphicons-halflings-regular.woff \
+	fonts/glyphicons-halflings-regular.woff2 \
+	$(NULL)
+
+webimagesdir = $(webdir)/images
+dist_webimages_DATA = \
+	images/alert-128-orange.png \
+	images/alert-128-red.png \
+	images/alert-multi-size-orange.ico \
+	images/alert-multi-size-red.ico \
+	images/animated.gif \
+	images/check-mark-2-128-green.png \
+	images/check-mark-2-multi-size-green.ico \
+	images/netdata.svg \
+	images/post.png \
+	images/seo-performance-16.png \
+	images/seo-performance-24.png \
+	images/seo-performance-32.png \
+	images/seo-performance-48.png \
+	images/seo-performance-64.png \
+	images/seo-performance-72.png \
+	images/seo-performance-114.png \
+	images/seo-performance-128.png \
+	images/seo-performance-256.png \
+	images/seo-performance-512.png \
+	images/seo-performance-multi-size.ico \
+	images/seo-performance-multi-size.icns \
+	$(NULL)
+
+webwellknowndir = $(webdir)/.well-known
+dist_webwellknown_DATA = \
+	$(NULL)
+
+webdntdir = $(webdir)/.well-known/dnt
+dist_webdnt_DATA = \
+	.well-known/dnt/cookies \
+	$(NULL)
 
 all: all-am
 
@@ -469,9 +429,9 @@ $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__confi
 	      exit 1;; \
 	  esac; \
 	done; \
-	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu conf.d/Makefile'; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu web/gui/Makefile'; \
 	$(am__cd) $(top_srcdir) && \
-	  $(AUTOMAKE) --gnu conf.d/Makefile
+	  $(AUTOMAKE) --gnu web/gui/Makefile
 .PRECIOUS: Makefile
 Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	@case '$?' in \
@@ -490,132 +450,153 @@ $(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
 $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
 $(am__aclocal_m4_deps):
-install-dist_chartsconfigDATA: $(dist_chartsconfig_DATA)
+install-dist_webDATA: $(dist_web_DATA)
 	@$(NORMAL_INSTALL)
-	@list='$(dist_chartsconfig_DATA)'; test -n "$(chartsconfigdir)" || list=; \
+	@list='$(dist_web_DATA)'; test -n "$(webdir)" || list=; \
 	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(chartsconfigdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(chartsconfigdir)" || exit 1; \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(webdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(webdir)" || exit 1; \
 	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
 	done | $(am__base_list) | \
 	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(chartsconfigdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(chartsconfigdir)" || exit $$?; \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webdir)" || exit $$?; \
 	done
 
-uninstall-dist_chartsconfigDATA:
+uninstall-dist_webDATA:
 	@$(NORMAL_UNINSTALL)
-	@list='$(dist_chartsconfig_DATA)'; test -n "$(chartsconfigdir)" || list=; \
+	@list='$(dist_web_DATA)'; test -n "$(webdir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(chartsconfigdir)'; $(am__uninstall_files_from_dir)
-install-dist_configDATA: $(dist_config_DATA)
+	dir='$(DESTDIR)$(webdir)'; $(am__uninstall_files_from_dir)
+install-dist_webcssDATA: $(dist_webcss_DATA)
 	@$(NORMAL_INSTALL)
-	@list='$(dist_config_DATA)'; test -n "$(configdir)" || list=; \
+	@list='$(dist_webcss_DATA)'; test -n "$(webcssdir)" || list=; \
 	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(configdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(configdir)" || exit 1; \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(webcssdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(webcssdir)" || exit 1; \
 	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
 	done | $(am__base_list) | \
 	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(configdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(configdir)" || exit $$?; \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webcssdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webcssdir)" || exit $$?; \
 	done
 
-uninstall-dist_configDATA:
+uninstall-dist_webcssDATA:
 	@$(NORMAL_UNINSTALL)
-	@list='$(dist_config_DATA)'; test -n "$(configdir)" || list=; \
+	@list='$(dist_webcss_DATA)'; test -n "$(webcssdir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(configdir)'; $(am__uninstall_files_from_dir)
-install-dist_healthconfigDATA: $(dist_healthconfig_DATA)
+	dir='$(DESTDIR)$(webcssdir)'; $(am__uninstall_files_from_dir)
+install-dist_webdntDATA: $(dist_webdnt_DATA)
 	@$(NORMAL_INSTALL)
-	@list='$(dist_healthconfig_DATA)'; test -n "$(healthconfigdir)" || list=; \
+	@list='$(dist_webdnt_DATA)'; test -n "$(webdntdir)" || list=; \
 	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(healthconfigdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(healthconfigdir)" || exit 1; \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(webdntdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(webdntdir)" || exit 1; \
 	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
 	done | $(am__base_list) | \
 	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(healthconfigdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(healthconfigdir)" || exit $$?; \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webdntdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webdntdir)" || exit $$?; \
 	done
 
-uninstall-dist_healthconfigDATA:
+uninstall-dist_webdntDATA:
 	@$(NORMAL_UNINSTALL)
-	@list='$(dist_healthconfig_DATA)'; test -n "$(healthconfigdir)" || list=; \
+	@list='$(dist_webdnt_DATA)'; test -n "$(webdntdir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(healthconfigdir)'; $(am__uninstall_files_from_dir)
-install-dist_nodeconfigDATA: $(dist_nodeconfig_DATA)
+	dir='$(DESTDIR)$(webdntdir)'; $(am__uninstall_files_from_dir)
+install-dist_webfontsDATA: $(dist_webfonts_DATA)
 	@$(NORMAL_INSTALL)
-	@list='$(dist_nodeconfig_DATA)'; test -n "$(nodeconfigdir)" || list=; \
+	@list='$(dist_webfonts_DATA)'; test -n "$(webfontsdir)" || list=; \
 	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(nodeconfigdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(nodeconfigdir)" || exit 1; \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(webfontsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(webfontsdir)" || exit 1; \
 	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
 	done | $(am__base_list) | \
 	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(nodeconfigdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(nodeconfigdir)" || exit $$?; \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webfontsdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webfontsdir)" || exit $$?; \
 	done
 
-uninstall-dist_nodeconfigDATA:
+uninstall-dist_webfontsDATA:
 	@$(NORMAL_UNINSTALL)
-	@list='$(dist_nodeconfig_DATA)'; test -n "$(nodeconfigdir)" || list=; \
+	@list='$(dist_webfonts_DATA)'; test -n "$(webfontsdir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(nodeconfigdir)'; $(am__uninstall_files_from_dir)
-install-dist_pythonconfigDATA: $(dist_pythonconfig_DATA)
+	dir='$(DESTDIR)$(webfontsdir)'; $(am__uninstall_files_from_dir)
+install-dist_webimagesDATA: $(dist_webimages_DATA)
 	@$(NORMAL_INSTALL)
-	@list='$(dist_pythonconfig_DATA)'; test -n "$(pythonconfigdir)" || list=; \
+	@list='$(dist_webimages_DATA)'; test -n "$(webimagesdir)" || list=; \
 	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(pythonconfigdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(pythonconfigdir)" || exit 1; \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(webimagesdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(webimagesdir)" || exit 1; \
 	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
 	done | $(am__base_list) | \
 	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(pythonconfigdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(pythonconfigdir)" || exit $$?; \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webimagesdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webimagesdir)" || exit $$?; \
 	done
 
-uninstall-dist_pythonconfigDATA:
+uninstall-dist_webimagesDATA:
 	@$(NORMAL_UNINSTALL)
-	@list='$(dist_pythonconfig_DATA)'; test -n "$(pythonconfigdir)" || list=; \
+	@list='$(dist_webimages_DATA)'; test -n "$(webimagesdir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(pythonconfigdir)'; $(am__uninstall_files_from_dir)
-install-dist_statsdconfigDATA: $(dist_statsdconfig_DATA)
+	dir='$(DESTDIR)$(webimagesdir)'; $(am__uninstall_files_from_dir)
+install-dist_weblibDATA: $(dist_weblib_DATA)
 	@$(NORMAL_INSTALL)
-	@list='$(dist_statsdconfig_DATA)'; test -n "$(statsdconfigdir)" || list=; \
+	@list='$(dist_weblib_DATA)'; test -n "$(weblibdir)" || list=; \
 	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(statsdconfigdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(statsdconfigdir)" || exit 1; \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(weblibdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(weblibdir)" || exit 1; \
 	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
 	done | $(am__base_list) | \
 	while read files; do \
-	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(statsdconfigdir)'"; \
-	  $(INSTALL_DATA) $$files "$(DESTDIR)$(statsdconfigdir)" || exit $$?; \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(weblibdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(weblibdir)" || exit $$?; \
 	done
 
-uninstall-dist_statsdconfigDATA:
+uninstall-dist_weblibDATA:
 	@$(NORMAL_UNINSTALL)
-	@list='$(dist_statsdconfig_DATA)'; test -n "$(statsdconfigdir)" || list=; \
+	@list='$(dist_weblib_DATA)'; test -n "$(weblibdir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	dir='$(DESTDIR)$(statsdconfigdir)'; $(am__uninstall_files_from_dir)
+	dir='$(DESTDIR)$(weblibdir)'; $(am__uninstall_files_from_dir)
+install-dist_webwellknownDATA: $(dist_webwellknown_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(dist_webwellknown_DATA)'; test -n "$(webwellknowndir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(webwellknowndir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(webwellknowndir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(webwellknowndir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(webwellknowndir)" || exit $$?; \
+	done
+
+uninstall-dist_webwellknownDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_webwellknown_DATA)'; test -n "$(webwellknowndir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(webwellknowndir)'; $(am__uninstall_files_from_dir)
 tags TAGS:
 
 ctags CTAGS:
@@ -657,7 +638,7 @@ check-am: all-am
 check: check-am
 all-am: Makefile $(DATA)
 installdirs:
-	for dir in "$(DESTDIR)$(chartsconfigdir)" "$(DESTDIR)$(configdir)" "$(DESTDIR)$(healthconfigdir)" "$(DESTDIR)$(nodeconfigdir)" "$(DESTDIR)$(pythonconfigdir)" "$(DESTDIR)$(statsdconfigdir)"; do \
+	for dir in "$(DESTDIR)$(webdir)" "$(DESTDIR)$(webcssdir)" "$(DESTDIR)$(webdntdir)" "$(DESTDIR)$(webfontsdir)" "$(DESTDIR)$(webimagesdir)" "$(DESTDIR)$(weblibdir)" "$(DESTDIR)$(webwellknowndir)"; do \
 	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
 	done
 install: install-am
@@ -711,9 +692,10 @@ info: info-am
 
 info-am:
 
-install-data-am: install-dist_chartsconfigDATA install-dist_configDATA \
-	install-dist_healthconfigDATA install-dist_nodeconfigDATA \
-	install-dist_pythonconfigDATA install-dist_statsdconfigDATA
+install-data-am: install-dist_webDATA install-dist_webcssDATA \
+	install-dist_webdntDATA install-dist_webfontsDATA \
+	install-dist_webimagesDATA install-dist_weblibDATA \
+	install-dist_webwellknownDATA
 
 install-dvi: install-dvi-am
 
@@ -757,31 +739,40 @@ ps: ps-am
 
 ps-am:
 
-uninstall-am: uninstall-dist_chartsconfigDATA \
-	uninstall-dist_configDATA uninstall-dist_healthconfigDATA \
-	uninstall-dist_nodeconfigDATA uninstall-dist_pythonconfigDATA \
-	uninstall-dist_statsdconfigDATA
+uninstall-am: uninstall-dist_webDATA uninstall-dist_webcssDATA \
+	uninstall-dist_webdntDATA uninstall-dist_webfontsDATA \
+	uninstall-dist_webimagesDATA uninstall-dist_weblibDATA \
+	uninstall-dist_webwellknownDATA
 
 .MAKE: install-am install-strip
 
 .PHONY: all all-am check check-am clean clean-generic cscopelist-am \
 	ctags-am distclean distclean-generic distdir dvi dvi-am html \
 	html-am info info-am install install-am install-data \
-	install-data-am install-dist_chartsconfigDATA \
-	install-dist_configDATA install-dist_healthconfigDATA \
-	install-dist_nodeconfigDATA install-dist_pythonconfigDATA \
-	install-dist_statsdconfigDATA install-dvi install-dvi-am \
+	install-data-am install-dist_webDATA install-dist_webcssDATA \
+	install-dist_webdntDATA install-dist_webfontsDATA \
+	install-dist_webimagesDATA install-dist_weblibDATA \
+	install-dist_webwellknownDATA install-dvi install-dvi-am \
 	install-exec install-exec-am install-html install-html-am \
 	install-info install-info-am install-man install-pdf \
 	install-pdf-am install-ps install-ps-am install-strip \
 	installcheck installcheck-am installdirs maintainer-clean \
 	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
 	pdf-am ps ps-am tags-am uninstall uninstall-am \
-	uninstall-dist_chartsconfigDATA uninstall-dist_configDATA \
-	uninstall-dist_healthconfigDATA uninstall-dist_nodeconfigDATA \
-	uninstall-dist_pythonconfigDATA \
-	uninstall-dist_statsdconfigDATA
+	uninstall-dist_webDATA uninstall-dist_webcssDATA \
+	uninstall-dist_webdntDATA uninstall-dist_webfontsDATA \
+	uninstall-dist_webimagesDATA uninstall-dist_weblibDATA \
+	uninstall-dist_webwellknownDATA
+
+
+version.txt:
+	if test -d "$(top_srcdir)/.git"; then \
+		git --git-dir="$(top_srcdir)/.git" log -n 1 --format=%H; \
+	fi > $@.tmp
+	test -s $@.tmp || echo 0 > $@.tmp
+	mv $@.tmp $@
 
+.PHONY: version.txt
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
diff --git a/web/gui/README.md b/web/gui/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/web/gui/README.md
diff --git a/web/css/bootstrap-3.3.7.css b/web/gui/css/bootstrap-3.3.7.css
index 6167622ce..8c4db1f33 100644
--- a/web/css/bootstrap-3.3.7.css
+++ b/web/gui/css/bootstrap-3.3.7.css
@@ -2,6 +2,7 @@
  * Bootstrap v3.3.7 (http://getbootstrap.com)
  * Copyright 2011-2016 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * SPDX-License-Identifier: MIT
  */
 /*! normalize.css v3.0.3 | MIT License | github.com/necolas/normalize.css */
 html {
diff --git a/web/css/bootstrap-slate-flat-3.3.7.css b/web/gui/css/bootstrap-slate-flat-3.3.7.css
index 98a8c9fcc..7ce384f81 100644
--- a/web/css/bootstrap-slate-flat-3.3.7.css
+++ b/web/gui/css/bootstrap-slate-flat-3.3.7.css
@@ -3,6 +3,7 @@
  * Homepage: http://bootswatch.com
  * Copyright 2012-2016 Thomas Park
  * Licensed under MIT
+ * SPDX-License-Identifier: MIT
  * Based on Bootstrap
 */
 /*!
diff --git a/web/css/bootstrap-slider-10.0.0.min.css b/web/gui/css/bootstrap-slider-10.0.0.min.css
index 1cf68b5e7..095be9514 100644
--- a/web/css/bootstrap-slider-10.0.0.min.css
+++ b/web/gui/css/bootstrap-slider-10.0.0.min.css
@@ -16,26 +16,7 @@
   *
  * bootstrap-slider is released under the MIT License
  * Copyright (c) 2017 Kyle Kemp, Rohit Kalkur, and contributors
- * 
- * Permission is hereby granted, free of charge, to any person
- * obtaining a copy of this software and associated documentation
- * files (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use,
- * copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following
- * conditions:
- * 
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
- * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
  *
- * ========================================================= */.slider{display:inline-block;vertical-align:middle;position:relative}.slider.slider-horizontal{width:210px;height:20px}.slider.slider-horizontal .slider-track{height:10px;width:100%;margin-top:-5px;top:50%;left:0}.slider.slider-horizontal .slider-selection,.slider.slider-horizontal .slider-track-low,.slider.slider-horizontal .slider-track-high{height:100%;top:0;bottom:0}.slider.slider-horizontal .slider-tick,.slider.slider-horizontal .slider-handle{margin-left:-10px}.slider.slider-horizontal .slider-tick.triangle,.slider.slider-horizontal .slider-handle.triangle{position:relative;top:50%;-ms-transform:translateY(-50%);transform:translateY(-50%);border-width:0 10px 10px 10px;width:0;height:0;border-bottom-color:#2e6da4;margin-top:0}.slider.slider-horizontal .slider-tick-container{white-space:nowrap;position:absolute;top:0;left:0;width:100%}.slider.slider-horizontal .slider-tick-label-container{white-space:nowrap;margin-top:20px}.slider.slider-horizontal .slider-tick-label-container .slider-tick-label{padding-top:4px;display:inline-block;text-align:center}.slider.slider-horizontal .tooltip{-ms-transform:translateX(-50%);transform:translateX(-50%)}.slider.slider-horizontal.slider-rtl .slider-track{left:initial;right:0}.slider.slider-horizontal.slider-rtl .slider-tick,.slider.slider-horizontal.slider-rtl .slider-handle{margin-left:initial;margin-right:-10px}.slider.slider-horizontal.slider-rtl .slider-tick-container{left:initial;right:0}.slider.slider-horizontal.slider-rtl .tooltip{-ms-transform:translateX(50%);transform:translateX(50%)}.slider.slider-vertical{height:210px;width:20px}.slider.slider-vertical .slider-track{width:10px;height:100%;left:25%;top:0}.slider.slider-vertical .slider-selection{width:100%;left:0;top:0;bottom:0}.slider.slider-vertical .slider-track-low,.slider.slider-vertical .slider-track-high{width:100%;left:0;right:0}.slider.slider-vertical .slider-tick,.slider.slider-vertical .slider-handle{margin-top:-10px}.slider.slider-vertical .slider-tick.triangle,.slider.slider-vertical .slider-handle.triangle{border-width:10px 0 10px 10px;width:1px;height:1px;border-left-color:#2e6da4;border-right-color:#2e6da4;margin-left:0;margin-right:0}.slider.slider-vertical .slider-tick-label-container{white-space:nowrap}.slider.slider-vertical .slider-tick-label-container .slider-tick-label{padding-left:4px}.slider.slider-vertical .tooltip{-ms-transform:translateY(-50%);transform:translateY(-50%)}.slider.slider-vertical.slider-rtl .slider-track{left:initial;right:25%}.slider.slider-vertical.slider-rtl .slider-selection{left:initial;right:0}.slider.slider-vertical.slider-rtl .slider-tick.triangle,.slider.slider-vertical.slider-rtl .slider-handle.triangle{border-width:10px 10px 10px 0}.slider.slider-vertical.slider-rtl .slider-tick-label-container .slider-tick-label{padding-left:initial;padding-right:4px}.slider.slider-disabled .slider-handle{background-image:-webkit-linear-gradient(top,#dfdfdf 0,#bebebe 100%);background-image:-o-linear-gradient(top,#dfdfdf 0,#bebebe 100%);background-image:linear-gradient(to bottom,#dfdfdf 0,#bebebe 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffdfdfdf',endColorstr='#ffbebebe',GradientType=0)}.slider.slider-disabled .slider-track{background-image:-webkit-linear-gradient(top,#e5e5e5 0,#e9e9e9 100%);background-image:-o-linear-gradient(top,#e5e5e5 0,#e9e9e9 100%);background-image:linear-gradient(to bottom,#e5e5e5 0,#e9e9e9 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffe5e5e5',endColorstr='#ffe9e9e9',GradientType=0);cursor:not-allowed}.slider input{display:none}.slider .tooltip.top{margin-top:-36px}.slider .tooltip-inner{white-space:nowrap;max-width:none}.slider .hide{display:none}.slider-track{position:absolute;cursor:pointer;background-image:-webkit-linear-gradient(top,#f5f5f5 0,#f9f9f9 100%);background-image:-o-linear-gradient(top,#f5f5f5 0,#f9f9f9 100%);background-image:linear-gradient(to bottom,#f5f5f5 0,#f9f9f9 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff5f5f5',endColorstr='#fff9f9f9',GradientType=0);-webkit-box-shadow:inset 0 1px 2px rgba(0,0,0,0.1);box-shadow:inset 0 1px 2px rgba(0,0,0,0.1);border-radius:4px}.slider-selection{position:absolute;background-image:-webkit-linear-gradient(top,#f9f9f9 0,#f5f5f5 100%);background-image:-o-linear-gradient(top,#f9f9f9 0,#f5f5f5 100%);background-image:linear-gradient(to bottom,#f9f9f9 0,#f5f5f5 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff9f9f9',endColorstr='#fff5f5f5',GradientType=0);-webkit-box-shadow:inset 0 -1px 0 rgba(0,0,0,0.15);box-shadow:inset 0 -1px 0 rgba(0,0,0,0.15);-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;border-radius:4px}.slider-selection.tick-slider-selection{background-image:-webkit-linear-gradient(top,#8ac1ef 0,#82b3de 100%);background-image:-o-linear-gradient(top,#8ac1ef 0,#82b3de 100%);background-image:linear-gradient(to bottom,#8ac1ef 0,#82b3de 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff8ac1ef',endColorstr='#ff82b3de',GradientType=0)}.slider-track-low,.slider-track-high{position:absolute;background:transparent;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;border-radius:4px}.slider-handle{position:absolute;top:0;width:20px;height:20px;background-color:#337ab7;background-image:-webkit-linear-gradient(top,#337ab7 0,#2e6da4 100%);background-image:-o-linear-gradient(top,#337ab7 0,#2e6da4 100%);background-image:linear-gradient(to bottom,#337ab7 0,#2e6da4 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff337ab7',endColorstr='#ff2e6da4',GradientType=0);filter:none;-webkit-box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 1px 2px rgba(0,0,0,.05);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 1px 2px rgba(0,0,0,.05);border:0 solid transparent}.slider-handle.round{border-radius:50%}.slider-handle.triangle{background:transparent none}.slider-handle.custom{background:transparent none}.slider-handle.custom::before{line-height:20px;font-size:20px;content:'\2605';color:#726204}.slider-tick{position:absolute;width:20px;height:20px;background-image:-webkit-linear-gradient(top,#f9f9f9 0,#f5f5f5 100%);background-image:-o-linear-gradient(top,#f9f9f9 0,#f5f5f5 100%);background-image:linear-gradient(to bottom,#f9f9f9 0,#f5f5f5 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff9f9f9',endColorstr='#fff5f5f5',GradientType=0);-webkit-box-shadow:inset 0 -1px 0 rgba(0,0,0,0.15);box-shadow:inset 0 -1px 0 rgba(0,0,0,0.15);-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;filter:none;opacity:.8;border:0 solid transparent}.slider-tick.round{border-radius:50%}.slider-tick.triangle{background:transparent none}.slider-tick.custom{background:transparent none}.slider-tick.custom::before{line-height:20px;font-size:20px;content:'\2605';color:#726204}.slider-tick.in-selection{background-image:-webkit-linear-gradient(top,#8ac1ef 0,#82b3de 100%);background-image:-o-linear-gradient(top,#8ac1ef 0,#82b3de 100%);background-image:linear-gradient(to bottom,#8ac1ef 0,#82b3de 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff8ac1ef',endColorstr='#ff82b3de',GradientType=0);opacity:1}
\ No newline at end of file
+ * SPDX-License-Identifier: MIT
+ *
+ * ========================================================= */.slider{display:inline-block;vertical-align:middle;position:relative}.slider.slider-horizontal{width:210px;height:20px}.slider.slider-horizontal .slider-track{height:10px;width:100%;margin-top:-5px;top:50%;left:0}.slider.slider-horizontal .slider-selection,.slider.slider-horizontal .slider-track-low,.slider.slider-horizontal .slider-track-high{height:100%;top:0;bottom:0}.slider.slider-horizontal .slider-tick,.slider.slider-horizontal .slider-handle{margin-left:-10px}.slider.slider-horizontal .slider-tick.triangle,.slider.slider-horizontal .slider-handle.triangle{position:relative;top:50%;-ms-transform:translateY(-50%);transform:translateY(-50%);border-width:0 10px 10px 10px;width:0;height:0;border-bottom-color:#2e6da4;margin-top:0}.slider.slider-horizontal .slider-tick-container{white-space:nowrap;position:absolute;top:0;left:0;width:100%}.slider.slider-horizontal .slider-tick-label-container{white-space:nowrap;margin-top:20px}.slider.slider-horizontal .slider-tick-label-container .slider-tick-label{padding-top:4px;display:inline-block;text-align:center}.slider.slider-horizontal .tooltip{-ms-transform:translateX(-50%);transform:translateX(-50%)}.slider.slider-horizontal.slider-rtl .slider-track{left:initial;right:0}.slider.slider-horizontal.slider-rtl .slider-tick,.slider.slider-horizontal.slider-rtl .slider-handle{margin-left:initial;margin-right:-10px}.slider.slider-horizontal.slider-rtl .slider-tick-container{left:initial;right:0}.slider.slider-horizontal.slider-rtl .tooltip{-ms-transform:translateX(50%);transform:translateX(50%)}.slider.slider-vertical{height:210px;width:20px}.slider.slider-vertical .slider-track{width:10px;height:100%;left:25%;top:0}.slider.slider-vertical .slider-selection{width:100%;left:0;top:0;bottom:0}.slider.slider-vertical .slider-track-low,.slider.slider-vertical .slider-track-high{width:100%;left:0;right:0}.slider.slider-vertical .slider-tick,.slider.slider-vertical .slider-handle{margin-top:-10px}.slider.slider-vertical .slider-tick.triangle,.slider.slider-vertical .slider-handle.triangle{border-width:10px 0 10px 10px;width:1px;height:1px;border-left-color:#2e6da4;border-right-color:#2e6da4;margin-left:0;margin-right:0}.slider.slider-vertical .slider-tick-label-container{white-space:nowrap}.slider.slider-vertical .slider-tick-label-container .slider-tick-label{padding-left:4px}.slider.slider-vertical .tooltip{-ms-transform:translateY(-50%);transform:translateY(-50%)}.slider.slider-vertical.slider-rtl .slider-track{left:initial;right:25%}.slider.slider-vertical.slider-rtl .slider-selection{left:initial;right:0}.slider.slider-vertical.slider-rtl .slider-tick.triangle,.slider.slider-vertical.slider-rtl .slider-handle.triangle{border-width:10px 10px 10px 0}.slider.slider-vertical.slider-rtl .slider-tick-label-container .slider-tick-label{padding-left:initial;padding-right:4px}.slider.slider-disabled .slider-handle{background-image:-webkit-linear-gradient(top,#dfdfdf 0,#bebebe 100%);background-image:-o-linear-gradient(top,#dfdfdf 0,#bebebe 100%);background-image:linear-gradient(to bottom,#dfdfdf 0,#bebebe 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffdfdfdf',endColorstr='#ffbebebe',GradientType=0)}.slider.slider-disabled .slider-track{background-image:-webkit-linear-gradient(top,#e5e5e5 0,#e9e9e9 100%);background-image:-o-linear-gradient(top,#e5e5e5 0,#e9e9e9 100%);background-image:linear-gradient(to bottom,#e5e5e5 0,#e9e9e9 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffe5e5e5',endColorstr='#ffe9e9e9',GradientType=0);cursor:not-allowed}.slider input{display:none}.slider .tooltip.top{margin-top:-36px}.slider .tooltip-inner{white-space:nowrap;max-width:none}.slider .hide{display:none}.slider-track{position:absolute;cursor:pointer;background-image:-webkit-linear-gradient(top,#f5f5f5 0,#f9f9f9 100%);background-image:-o-linear-gradient(top,#f5f5f5 0,#f9f9f9 100%);background-image:linear-gradient(to bottom,#f5f5f5 0,#f9f9f9 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff5f5f5',endColorstr='#fff9f9f9',GradientType=0);-webkit-box-shadow:inset 0 1px 2px rgba(0,0,0,0.1);box-shadow:inset 0 1px 2px rgba(0,0,0,0.1);border-radius:4px}.slider-selection{position:absolute;background-image:-webkit-linear-gradient(top,#f9f9f9 0,#f5f5f5 100%);background-image:-o-linear-gradient(top,#f9f9f9 0,#f5f5f5 100%);background-image:linear-gradient(to bottom,#f9f9f9 0,#f5f5f5 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff9f9f9',endColorstr='#fff5f5f5',GradientType=0);-webkit-box-shadow:inset 0 -1px 0 rgba(0,0,0,0.15);box-shadow:inset 0 -1px 0 rgba(0,0,0,0.15);-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;border-radius:4px}.slider-selection.tick-slider-selection{background-image:-webkit-linear-gradient(top,#8ac1ef 0,#82b3de 100%);background-image:-o-linear-gradient(top,#8ac1ef 0,#82b3de 100%);background-image:linear-gradient(to bottom,#8ac1ef 0,#82b3de 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff8ac1ef',endColorstr='#ff82b3de',GradientType=0)}.slider-track-low,.slider-track-high{position:absolute;background:transparent;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;border-radius:4px}.slider-handle{position:absolute;top:0;width:20px;height:20px;background-color:#337ab7;background-image:-webkit-linear-gradient(top,#337ab7 0,#2e6da4 100%);background-image:-o-linear-gradient(top,#337ab7 0,#2e6da4 100%);background-image:linear-gradient(to bottom,#337ab7 0,#2e6da4 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff337ab7',endColorstr='#ff2e6da4',GradientType=0);filter:none;-webkit-box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 1px 2px rgba(0,0,0,.05);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 1px 2px rgba(0,0,0,.05);border:0 solid transparent}.slider-handle.round{border-radius:50%}.slider-handle.triangle{background:transparent none}.slider-handle.custom{background:transparent none}.slider-handle.custom::before{line-height:20px;font-size:20px;content:'\2605';color:#726204}.slider-tick{position:absolute;width:20px;height:20px;background-image:-webkit-linear-gradient(top,#f9f9f9 0,#f5f5f5 100%);background-image:-o-linear-gradient(top,#f9f9f9 0,#f5f5f5 100%);background-image:linear-gradient(to bottom,#f9f9f9 0,#f5f5f5 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff9f9f9',endColorstr='#fff5f5f5',GradientType=0);-webkit-box-shadow:inset 0 -1px 0 rgba(0,0,0,0.15);box-shadow:inset 0 -1px 0 rgba(0,0,0,0.15);-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;filter:none;opacity:.8;border:0 solid transparent}.slider-tick.round{border-radius:50%}.slider-tick.triangle{background:transparent none}.slider-tick.custom{background:transparent none}.slider-tick.custom::before{line-height:20px;font-size:20px;content:'\2605';color:#726204}.slider-tick.in-selection{background-image:-webkit-linear-gradient(top,#8ac1ef 0,#82b3de 100%);background-image:-o-linear-gradient(top,#8ac1ef 0,#82b3de 100%);background-image:linear-gradient(to bottom,#8ac1ef 0,#82b3de 100%);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff8ac1ef',endColorstr='#ff82b3de',GradientType=0);opacity:1}
diff --git a/web/css/bootstrap-theme-3.3.7.min.css b/web/gui/css/bootstrap-theme-3.3.7.min.css
index 5e3940195..ba77cff5d 100644
--- a/web/css/bootstrap-theme-3.3.7.min.css
+++ b/web/gui/css/bootstrap-theme-3.3.7.min.css
@@ -2,5 +2,6 @@
  * Bootstrap v3.3.7 (http://getbootstrap.com)
  * Copyright 2011-2016 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * SPDX-License-Identifier: MIT
  */.btn-danger,.btn-default,.btn-info,.btn-primary,.btn-success,.btn-warning{text-shadow:0 -1px 0 rgba(0,0,0,.2);-webkit-box-shadow:inset 0 1px 0 rgba(255,255,255,.15),0 1px 1px rgba(0,0,0,.075);box-shadow:inset 0 1px 0 rgba(255,255,255,.15),0 1px 1px rgba(0,0,0,.075)}.btn-danger.active,.btn-danger:active,.btn-default.active,.btn-default:active,.btn-info.active,.btn-info:active,.btn-primary.active,.btn-primary:active,.btn-success.active,.btn-success:active,.btn-warning.active,.btn-warning:active{-webkit-box-shadow:inset 0 3px 5px rgba(0,0,0,.125);box-shadow:inset 0 3px 5px rgba(0,0,0,.125)}.btn-danger.disabled,.btn-danger[disabled],.btn-default.disabled,.btn-default[disabled],.btn-info.disabled,.btn-info[disabled],.btn-primary.disabled,.btn-primary[disabled],.btn-success.disabled,.btn-success[disabled],.btn-warning.disabled,.btn-warning[disabled],fieldset[disabled] .btn-danger,fieldset[disabled] .btn-default,fieldset[disabled] .btn-info,fieldset[disabled] 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-/*# sourceMappingURL=bootstrap-theme.min.css.map */
\ No newline at end of file
+/*# sourceMappingURL=bootstrap-theme.min.css.map */
diff --git a/web/css/bootstrap-toggle-2.2.2.min.css b/web/gui/css/bootstrap-toggle-2.2.2.min.css
index 0d42ed09c..a3daa3721 100644
--- a/web/css/bootstrap-toggle-2.2.2.min.css
+++ b/web/gui/css/bootstrap-toggle-2.2.2.min.css
@@ -4,6 +4,7 @@
  * ========================================================================
  * Copyright 2014 Min Hur, The New York Times Company
  * Licensed under MIT
+ * SPDX-License-Identifier: MIT
  * ======================================================================== */
 .checkbox label .toggle,.checkbox-inline .toggle{margin-left:-20px;margin-right:5px}
 .toggle{position:relative;overflow:hidden}
@@ -25,4 +26,4 @@
 .toggle-off.btn-sm{padding-left:20px}
 .toggle.btn-xs{min-width:35px;min-height:22px}
 .toggle-on.btn-xs{padding-right:12px}
-.toggle-off.btn-xs{padding-left:12px}
\ No newline at end of file
+.toggle-off.btn-xs{padding-left:12px}
diff --git a/web/css/c3-0.4.18.min.css b/web/gui/css/c3-0.4.18.min.css
index 61ae63a03..a033d7203 100644
--- a/web/css/c3-0.4.18.min.css
+++ b/web/gui/css/c3-0.4.18.min.css
@@ -1 +1,2 @@
-.c3 svg{font:10px sans-serif;-webkit-tap-highlight-color:transparent}.c3 line,.c3 path{fill:none;stroke:#000}.c3 text{-webkit-user-select:none;-moz-user-select:none;user-select:none}.c3-bars path,.c3-event-rect,.c3-legend-item-tile,.c3-xgrid-focus,.c3-ygrid{shape-rendering:crispEdges}.c3-chart-arc path{stroke:#fff}.c3-chart-arc text{fill:#fff;font-size:13px}.c3-grid line{stroke:#aaa}.c3-grid text{fill:#aaa}.c3-xgrid,.c3-ygrid{stroke-dasharray:3 3}.c3-text.c3-empty{fill:grey;font-size:2em}.c3-line{stroke-width:1px}.c3-circle._expanded_{stroke-width:1px;stroke:#fff}.c3-selected-circle{fill:#fff;stroke-width:2px}.c3-bar{stroke-width:0}.c3-bar._expanded_{fill-opacity:1;fill-opacity:.75}.c3-target.c3-focused{opacity:1}.c3-target.c3-focused path.c3-line,.c3-target.c3-focused path.c3-step{stroke-width:2px}.c3-target.c3-defocused{opacity:.3!important}.c3-region{fill:#4682b4;fill-opacity:.1}.c3-brush .extent{fill-opacity:.1}.c3-legend-item{font-size:12px}.c3-legend-item-hidden{opacity:.15}.c3-legend-background{opacity:.75;fill:#fff;stroke:#d3d3d3;stroke-width:1}.c3-title{font:14px sans-serif}.c3-tooltip-container{z-index:10}.c3-tooltip{border-collapse:collapse;border-spacing:0;background-color:#fff;empty-cells:show;-webkit-box-shadow:7px 7px 12px -9px #777;-moz-box-shadow:7px 7px 12px -9px #777;box-shadow:7px 7px 12px -9px #777;opacity:.9}.c3-tooltip tr{border:1px solid #ccc}.c3-tooltip th{background-color:#aaa;font-size:14px;padding:2px 5px;text-align:left;color:#fff}.c3-tooltip td{font-size:13px;padding:3px 6px;background-color:#fff;border-left:1px dotted #999}.c3-tooltip td>span{display:inline-block;width:10px;height:10px;margin-right:6px}.c3-tooltip td.value{text-align:right}.c3-area{stroke-width:0;opacity:.2}.c3-chart-arcs-title{dominant-baseline:middle;font-size:1.3em}.c3-chart-arcs .c3-chart-arcs-background{fill:#e0e0e0;stroke:none}.c3-chart-arcs .c3-chart-arcs-gauge-unit{fill:#000;font-size:16px}.c3-chart-arcs .c3-chart-arcs-gauge-max{fill:#777}.c3-chart-arcs .c3-chart-arcs-gauge-min{fill:#777}.c3-chart-arc .c3-gauge-value{fill:#000}.c3-chart-arc.c3-target g path{opacity:1}.c3-chart-arc.c3-target.c3-focused g path{opacity:1}
\ No newline at end of file
+/* SPDX-License-Identifier: MIT */
+.c3 svg{font:10px sans-serif;-webkit-tap-highlight-color:transparent}.c3 line,.c3 path{fill:none;stroke:#000}.c3 text{-webkit-user-select:none;-moz-user-select:none;user-select:none}.c3-bars path,.c3-event-rect,.c3-legend-item-tile,.c3-xgrid-focus,.c3-ygrid{shape-rendering:crispEdges}.c3-chart-arc path{stroke:#fff}.c3-chart-arc text{fill:#fff;font-size:13px}.c3-grid line{stroke:#aaa}.c3-grid text{fill:#aaa}.c3-xgrid,.c3-ygrid{stroke-dasharray:3 3}.c3-text.c3-empty{fill:grey;font-size:2em}.c3-line{stroke-width:1px}.c3-circle._expanded_{stroke-width:1px;stroke:#fff}.c3-selected-circle{fill:#fff;stroke-width:2px}.c3-bar{stroke-width:0}.c3-bar._expanded_{fill-opacity:1;fill-opacity:.75}.c3-target.c3-focused{opacity:1}.c3-target.c3-focused path.c3-line,.c3-target.c3-focused path.c3-step{stroke-width:2px}.c3-target.c3-defocused{opacity:.3!important}.c3-region{fill:#4682b4;fill-opacity:.1}.c3-brush .extent{fill-opacity:.1}.c3-legend-item{font-size:12px}.c3-legend-item-hidden{opacity:.15}.c3-legend-background{opacity:.75;fill:#fff;stroke:#d3d3d3;stroke-width:1}.c3-title{font:14px sans-serif}.c3-tooltip-container{z-index:10}.c3-tooltip{border-collapse:collapse;border-spacing:0;background-color:#fff;empty-cells:show;-webkit-box-shadow:7px 7px 12px -9px #777;-moz-box-shadow:7px 7px 12px -9px #777;box-shadow:7px 7px 12px -9px #777;opacity:.9}.c3-tooltip tr{border:1px solid #ccc}.c3-tooltip th{background-color:#aaa;font-size:14px;padding:2px 5px;text-align:left;color:#fff}.c3-tooltip td{font-size:13px;padding:3px 6px;background-color:#fff;border-left:1px dotted #999}.c3-tooltip td>span{display:inline-block;width:10px;height:10px;margin-right:6px}.c3-tooltip td.value{text-align:right}.c3-area{stroke-width:0;opacity:.2}.c3-chart-arcs-title{dominant-baseline:middle;font-size:1.3em}.c3-chart-arcs .c3-chart-arcs-background{fill:#e0e0e0;stroke:none}.c3-chart-arcs .c3-chart-arcs-gauge-unit{fill:#000;font-size:16px}.c3-chart-arcs .c3-chart-arcs-gauge-max{fill:#777}.c3-chart-arcs .c3-chart-arcs-gauge-min{fill:#777}.c3-chart-arc .c3-gauge-value{fill:#000}.c3-chart-arc.c3-target g path{opacity:1}.c3-chart-arc.c3-target.c3-focused g path{opacity:1}
diff --git a/web/css/morris-0.5.1.css b/web/gui/css/morris-0.5.1.css
index 209f09156..39203d314 100644
--- a/web/css/morris-0.5.1.css
+++ b/web/gui/css/morris-0.5.1.css
@@ -1,2 +1,3 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
 .morris-hover{position:absolute;z-index:1000}.morris-hover.morris-default-style{border-radius:10px;padding:6px;color:#666;background:rgba(255,255,255,0.8);border:solid 2px rgba(230,230,230,0.8);font-family:sans-serif;font-size:12px;text-align:center}.morris-hover.morris-default-style .morris-hover-row-label{font-weight:bold;margin:0.25em 0}
 .morris-hover.morris-default-style .morris-hover-point{white-space:nowrap;margin:0.1em 0}
diff --git a/web/dashboard.css b/web/gui/dashboard.css
index 80062a272..8062497d0 100644
--- a/web/dashboard.css
+++ b/web/gui/dashboard.css
@@ -1,3 +1,4 @@
+/* SPDX-License-Identfier: GPL-3.0-or-later */
 html,
 body {
     /*font-family: Calibri,"Segoe UI","Helvetica Neue",Helvetica,Arial,sans-serif;*/
diff --git a/web/dashboard.html b/web/gui/dashboard.html
index 152178947..4d0685b08 100644
--- a/web/dashboard.html
+++ b/web/gui/dashboard.html
@@ -1,4 +1,5 @@
 <!DOCTYPE html>
+<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
 <html lang="en">
 <head>
     <title>NetData Dashboard</title>
@@ -104,7 +105,7 @@ They also have mouse-hover support.
     <small>rendered in <span id="time101">X</span> ms</small>
 </div>
 <div style="width: 33%; display: inline-block;">
-    <div data-netdata="system.ipv4"
+    <div data-netdata="system.net"
         data-chart-library="sparkline"
         data-width="100%"
         data-height="30"
@@ -146,7 +147,7 @@ the total of all dimensions.
     <small>rendered in <span id="time001">X</span> ms</small>
 </div>
 <div style="width: 33%; display: inline-block;">
-    <div data-netdata="system.ipv4"
+    <div data-netdata="system.net"
         data-chart-library="peity"
         data-width="100%"
         data-height="30"
@@ -187,7 +188,7 @@ Sparklines using dygraphs
         data-after="-300"
         ></div>
     are also possible! This
-    <div data-netdata="system.ipv4"
+    <div data-netdata="system.net"
         data-chart-library="dygraph"
         data-dygraph-theme="sparkline"
         data-legend="no"
@@ -220,7 +221,7 @@ Sparklines using dygraphs
     <small>rendered in <span id="time501">X</span> ms</small>
 </div>
 <div style="width: 33%; display: inline-block;">
-    <div data-netdata="system.ipv4"
+    <div data-netdata="system.net"
         data-chart-library="dygraph"
         data-dygraph-theme="sparkline"
         data-width="100%"
@@ -259,7 +260,7 @@ Sparklines using dygraphs
     <small>rendered in <span id="time201">X</span> ms</small>
 </div>
 <div style="width: 33%; display: inline-block;">
-    <div data-netdata="system.ipv4"
+    <div data-netdata="system.net"
         data-chart-library="dygraph"
         data-width="100%"
         data-height="200"
@@ -380,7 +381,7 @@ Sparklines using dygraphs
 </div>
 <div style="width: 33%; display: inline-block;">
     <div style="display: inline-block; position: relative;">
-        <div data-netdata="system.ipv4"
+        <div data-netdata="system.net"
             data-chart-library="easypiechart"
             data-width="200"
             data-height="200"
@@ -392,7 +393,7 @@ Sparklines using dygraphs
         <small>rendered in <span id="time602">X</span> ms</small>
     </div>
     <div style="display: inline-block; position: relative;">
-        <div data-netdata="system.ipv4"
+        <div data-netdata="system.net"
             data-chart-library="easypiechart"
             data-width="100"
             data-height="100"
@@ -463,7 +464,7 @@ Sparklines using dygraphs
 </div>
 <div style="width: 33%; display: inline-block;">
     <div style="display: inline-block; position: relative;">
-        <div data-netdata="system.ipv4"
+        <div data-netdata="system.net"
             data-chart-library="gauge"
             data-width="250"
             data-height="200"
@@ -475,7 +476,7 @@ Sparklines using dygraphs
         <small>rendered in <span id="time702">X</span> ms</small>
     </div>
     <div style="display: inline-block; position: relative;">
-        <div data-netdata="system.ipv4"
+        <div data-netdata="system.net"
             data-chart-library="gauge"
             data-width="125"
             data-height="100"
@@ -532,7 +533,7 @@ NetData is a complete Google Visualization API provider.
     <small>rendered in <span id="time301">X</span> ms</small>
 </div>
 <div style="width: 33%; display: inline-block;">
-    <div data-netdata="system.ipv4"
+    <div data-netdata="system.net"
         data-chart-library="google"
         data-width="100%"
         data-height="200"
@@ -575,7 +576,7 @@ Unfortunatelly, Morris Charts are very slow. Here we force them to lower their d
     <small>rendered in <span id="time401">X</span> ms</small>
 </div>
 <div style="width: 33%; display: inline-block;">
-    <div data-netdata="system.ipv4"
+    <div data-netdata="system.net"
         data-chart-library="morris"
         data-width="100%"
         data-height="200"
@@ -621,7 +622,7 @@ So, to avoid flashing the charts, we destroy and re-create the charts on each up
     <small>rendered in <span id="time801">X</span> ms</small>
 </div>
 <div style="width: 33%; display: inline-block;">
-    <div data-netdata="system.ipv4"
+    <div data-netdata="system.net"
         data-chart-library="c3"
         data-width="100%"
         data-height="200"
@@ -682,10 +683,10 @@ So, to avoid flashing the charts, we destroy and re-create the charts on each up
              data-points="60"
              data-debug="false"
              data-decimal-digits="0"
-             data-dt-element-name="time902"
+             data-dt-element-name="time903"
         ></div>
         <br/>
-        <small>rendered in <span id="time902">X</span> ms</small>
+        <small>rendered in <span id="time903">X</span> ms</small>
     </div>
 </div> <!-- 1st container -->
 </body>
diff --git a/web/dashboard.js b/web/gui/dashboard.js
index 607c9d1ac..16fbf88d0 100644
--- a/web/dashboard.js
+++ b/web/gui/dashboard.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
 // ----------------------------------------------------------------------------
 // You can set the following variables before loading this script:
 
@@ -23,6 +24,10 @@
  *                                                  (default: false) */
 /*global netdataNoBootstrap          *//* boolean,  disable bootstrap - disables help too
  *                                                  (default: false) */
+/*global netdataNoFontAwesome        *//* boolean,  disable fontawesome (do not load it)
+ *                                                  (default: false) */
+/*global netdataIcons                *//* object,   overwrite netdata fontawesome icons
+ *                                                  (default: null) */
 /*global netdataDontStart            *//* boolean,  do not start the thread to process the charts
  *                                                  (default: false) */
 /*global netdataErrorCallback        *//* function, callback to be called when the dashboard encounters an error
@@ -70,6 +75,14 @@
 var NETDATA = window.NETDATA || {};
 
 (function(window, document, $, undefined) {
+
+    NETDATA.encodeURIComponent = function(s) {
+        if(typeof(s) === 'string')
+            return encodeURIComponent(s);
+
+        return s;
+    };
+
     // ------------------------------------------------------------------------
     // compatibility fixes
 
@@ -113,7 +126,7 @@ var NETDATA = window.NETDATA || {};
                 .replace(/</g, '&lt;')
                 .replace(/>/g, '&gt;')
                 .replace(/"/g, '&quot;')
-                .replace(/'/g, '#27;');
+                .replace(/'/g, '&#39;');
         },
 
         object: function(name, obj, ignore_regex) {
@@ -208,7 +221,7 @@ var NETDATA = window.NETDATA || {};
         NETDATA.serverDefault = netdataServer;
     else {
         var s = NETDATA._scriptSource();
-        if(s) NETDATA.serverDefault = s.replace(/\/dashboard.js(\?.*)*$/g, "");
+        if(s) NETDATA.serverDefault = s.replace(/\/dashboard.js(\?.*)?$/g, "");
         else {
             console.log('WARNING: Cannot detect the URL of the netdata server.');
             NETDATA.serverDefault = null;
@@ -338,6 +351,27 @@ var NETDATA = window.NETDATA || {};
     //                         (blue)     (red)      (orange)   (green)    (pink)     (brown)    (purple)   (yellow)   (gray)
     //NETDATA.colors        = [ '#5DA5DA', '#F15854', '#FAA43A', '#60BD68', '#F17CB0', '#B2912F', '#B276B2', '#DECF3F', '#4D4D4D' ];
 
+    NETDATA.icons = {
+        left: '<i class="fas fa-backward"></i>',
+        reset: '<i class="fas fa-play"></i>',
+        right: '<i class="fas fa-forward"></i>',
+        zoomIn: '<i class="fas fa-plus"></i>',
+        zoomOut: '<i class="fas fa-minus"></i>',
+        resize: '<i class="fas fa-sort"></i>',
+        lineChart: '<i class="fas fa-chart-line"></i>',
+        areaChart: '<i class="fas fa-chart-area"></i>',
+        noChart: '<i class="fas fa-chart-area"></i>',
+        loading: '<i class="fas fa-sync-alt"></i>',
+        noData: '<i class="fas fa-exclamation-triangle"></i>'
+    };
+
+    if(typeof netdataIcons === 'object') {
+        for(var icon in NETDATA.icons) {
+            if(NETDATA.icons.hasOwnProperty(icon) && typeof(netdataIcons[icon]) === 'string')
+                NETDATA.icons[icon] = netdataIcons[icon];
+        }
+    }
+
     if(typeof netdataSnapshotData === 'undefined')
         netdataSnapshotData = null;
 
@@ -537,7 +571,7 @@ var NETDATA = window.NETDATA || {};
             focus:              false,
             visibility:         false,
             chart_data_url:     false,
-            chart_errors:       true, // FIXME: remember to set it to false before merging
+            chart_errors:       false, // remember to set it to false before merging
             chart_timing:       false,
             chart_calls:        false,
             libraries:          false,
@@ -1758,7 +1792,7 @@ var NETDATA = window.NETDATA || {};
     // ----------------------------------------------------------------------------------------------------------------
     // dimensions selection
 
-    // FIXME
+    // TODO
     // move color assignment to dimensions, here
 
     var dimensionStatus = function(parent, label, name_div, value_div, color) {
@@ -2054,8 +2088,8 @@ var NETDATA = window.NETDATA || {};
                     return this.xAxisFormat.format(d);
                 };
 
-                var d = new Date();
-                var t = this.dateFormat.format(d) + ' ' + this.timeFormat.format(d) + ' ' + this.xAxisFormat.format(d);
+                //var d = new Date();
+                //var t = this.dateFormat.format(d) + ' ' + this.timeFormat.format(d) + ' ' + this.xAxisFormat.format(d);
 
                 ret = true;
             }
@@ -2094,6 +2128,16 @@ var NETDATA = window.NETDATA || {};
         },
 
         scalableUnits: {
+            'packets/s': {
+                'pps': 1,
+                'Kpps': 1000,
+                'Mpps': 1000000
+            },
+            'pps': {
+                'pps': 1,
+                'Kpps': 1000,
+                'Mpps': 1000000
+            },
             'kilobits/s': {
                 'bits/s': 1 / 1000,
                 'kilobits/s': 1,
@@ -2176,7 +2220,7 @@ var NETDATA = window.NETDATA || {};
                 'milliseconds': {
                     check: function (max) { return NETDATA.options.current.seconds_as_time && max < 1000; },
                     convert: function(milliseconds) {
-                        tms = Math.round(milliseconds * 10);
+                        var tms = Math.round(milliseconds * 10);
                         milliseconds = Math.floor(tms / 10);
 
                         tms -= milliseconds * 10;
@@ -2368,7 +2412,7 @@ var NETDATA = window.NETDATA || {};
                             }
 
                             return value / tdivider;
-                        }
+                        };
                     }
                     else {
                         // the caller did not give data-common-units
@@ -2891,7 +2935,7 @@ var NETDATA = window.NETDATA || {};
                 that.force_update_every *= 1000;
 
             // the dimensions requested by the user
-            that.dimensions = NETDATA.dataAttribute(that.element, 'dimensions', null);
+            that.dimensions = NETDATA.encodeURIComponent(NETDATA.dataAttribute(that.element, 'dimensions', null));
 
             that.title = NETDATA.dataAttribute(that.element, 'title', null);    // the title of the chart
             that.units = NETDATA.dataAttribute(that.element, 'units', null);    // the units of the chart dimensions
@@ -2899,8 +2943,11 @@ var NETDATA = window.NETDATA || {};
             that.units_current = that.units;
             that.units_common = NETDATA.dataAttribute(that.element, 'common-units', null);
 
-            that.append_options = NETDATA.dataAttribute(that.element, 'append-options', null); // additional options to pass to netdata
-            that.override_options = NETDATA.dataAttribute(that.element, 'override-options', null);  // override options to pass to netdata
+            // additional options to pass to netdata
+            that.append_options = NETDATA.encodeURIComponent(NETDATA.dataAttribute(that.element, 'append-options', null));
+
+            // override options to pass to netdata
+            that.override_options = NETDATA.encodeURIComponent(NETDATA.dataAttribute(that.element, 'override-options', null));
 
             that.debug = NETDATA.dataAttributeBoolean(that.element, 'debug', false);
 
@@ -3045,7 +3092,7 @@ var NETDATA = window.NETDATA || {};
 
         var invisibleSearchableText = function() {
             return '<span style="position:absolute; opacity: 0; width: 0px;">' + that.id + '</span>';
-        }
+        };
 
         /* init() private
          * initialize state variables
@@ -3119,19 +3166,19 @@ var NETDATA = window.NETDATA || {};
             var icon;
             if(that.chart !== null) {
                 if(that.chart.chart_type === 'line')
-                    icon = '<i class="fas fa-chart-line"></i>';
+                    icon = NETDATA.icons.lineChart;
                 else
-                    icon = '<i class="fas fa-chart-area"></i>';
+                    icon = NETDATA.icons.areaChart;
             }
             else
-                icon = '<i class="fas fa-chart-area"></i>';
+                icon = NETDATA.icons.noChart;
 
             showMessageIcon(icon + ' netdata' + invisibleSearchableText());
         };
 
         var showLoading = function() {
             if(that.chart_created === false) {
-                showMessageIcon('<i class="fas fa-sync-alt"></i> netdata');
+                showMessageIcon(NETDATA.icons.loading + ' netdata');
                 return true;
             }
             return false;
@@ -3532,7 +3579,7 @@ var NETDATA = window.NETDATA || {};
 
 
         var noDataToShow = function() {
-            showMessageIcon('<i class="fas fa-exclamation-triangle"></i> empty');
+            showMessageIcon(NETDATA.icons.noData + ' empty');
             that.legendUpdateDOM();
             that.tm.last_autorefreshed = Date.now();
             // that.data_update_every = 30 * 1000;
@@ -4043,10 +4090,7 @@ var NETDATA = window.NETDATA || {};
                 if(typeof label === 'undefined') continue;
                 if(typeof this.element_legend_childs.series[label] === 'undefined') continue;
 
-                if(show_undefined)
-                    this.legendSetLabelValue(label, null);
-                else
-                    this.legendSetLabelValue(label, this.data.view_latest_values[i]);
+                this.legendSetLabelValue(label, this.data.view_latest_values[i]);
             }
         };
 
@@ -4115,9 +4159,12 @@ var NETDATA = window.NETDATA || {};
 
                 if (typeof this.chart.plugin === 'string' && this.chart.plugin !== '') {
                     str = this.chart.plugin;
-                    if (typeof this.chart.module === 'string' && this.chart.module !== '') {
-                        str += '/' + this.chart.module;
-                    }
+
+                    if(str.endsWith(".plugin"))
+                        str = str.substring(0, str.length - 7);
+
+                    if (typeof this.chart.module === 'string' && this.chart.module !== '')
+                        str += ':' + this.chart.module;
 
                     if (withContext && context !== '')
                         str += ', ' + context;
@@ -4315,7 +4362,7 @@ var NETDATA = window.NETDATA || {};
                     this.element.appendChild(this.element_legend_childs.toolbox);
 
                     this.element_legend_childs.toolbox_left.className += ' netdata-legend-toolbox-button';
-                    this.element_legend_childs.toolbox_left.innerHTML = '<i class="fas fa-backward"></i>';
+                    this.element_legend_childs.toolbox_left.innerHTML = NETDATA.icons.left;
                     this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_left);
                     this.element_legend_childs.toolbox_left.onclick = function(e) {
                         e.preventDefault();
@@ -4340,7 +4387,7 @@ var NETDATA = window.NETDATA || {};
 
 
                     this.element_legend_childs.toolbox_reset.className += ' netdata-legend-toolbox-button';
-                    this.element_legend_childs.toolbox_reset.innerHTML = '<i class="fas fa-play"></i>';
+                    this.element_legend_childs.toolbox_reset.innerHTML = NETDATA.icons.reset;
                     this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_reset);
                     this.element_legend_childs.toolbox_reset.onclick = function(e) {
                         e.preventDefault();
@@ -4359,7 +4406,7 @@ var NETDATA = window.NETDATA || {};
                     });
 
                     this.element_legend_childs.toolbox_right.className += ' netdata-legend-toolbox-button';
-                    this.element_legend_childs.toolbox_right.innerHTML = '<i class="fas fa-forward"></i>';
+                    this.element_legend_childs.toolbox_right.innerHTML = NETDATA.icons.right;
                     this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_right);
                     this.element_legend_childs.toolbox_right.onclick = function(e) {
                         e.preventDefault();
@@ -4383,7 +4430,7 @@ var NETDATA = window.NETDATA || {};
 
 
                     this.element_legend_childs.toolbox_zoomin.className += ' netdata-legend-toolbox-button';
-                    this.element_legend_childs.toolbox_zoomin.innerHTML = '<i class="fas fa-plus"></i>';
+                    this.element_legend_childs.toolbox_zoomin.innerHTML = NETDATA.icons.zoomIn;
                     this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_zoomin);
                     this.element_legend_childs.toolbox_zoomin.onclick = function(e) {
                         e.preventDefault();
@@ -4405,7 +4452,7 @@ var NETDATA = window.NETDATA || {};
                     });
 
                     this.element_legend_childs.toolbox_zoomout.className += ' netdata-legend-toolbox-button';
-                    this.element_legend_childs.toolbox_zoomout.innerHTML = '<i class="fas fa-minus"></i>';
+                    this.element_legend_childs.toolbox_zoomout.innerHTML = NETDATA.icons.zoomOut;
                     this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_zoomout);
                     this.element_legend_childs.toolbox_zoomout.onclick = function(e) {
                         e.preventDefault();
@@ -4441,7 +4488,7 @@ var NETDATA = window.NETDATA || {};
                     this.element_legend_childs.resize_handler = document.createElement('div');
 
                     this.element_legend_childs.resize_handler.className += " netdata-legend-resize-handler";
-                    this.element_legend_childs.resize_handler.innerHTML = '<i class="fas fa-sort"></i>';
+                    this.element_legend_childs.resize_handler.innerHTML = NETDATA.icons.resize;
                     this.element.appendChild(this.element_legend_childs.resize_handler);
                     if (NETDATA.options.current.show_help === true)
                         $(this.element_legend_childs.resize_handler).popover({
@@ -4653,12 +4700,12 @@ var NETDATA = window.NETDATA || {};
                 ret = this.library.options(this);
 
             if(this.append_options !== null)
-                ret += '|' + this.append_options.toString();
+                ret += '%7C' + this.append_options.toString();
 
-            ret += '|jsonwrap';
+            ret += '%7C' + 'jsonwrap';
 
             if(NETDATA.options.current.eliminate_zero_dimensions === true)
-                ret += '|nonzero';
+                ret += '%7C' + 'nonzero';
 
             return ret;
         };
@@ -4846,7 +4893,7 @@ var NETDATA = window.NETDATA || {};
                 this.__redraw_on_unhide = true;
 
                 if(this.debug === true)
-                    this.log("drawn while not visible")
+                    this.log("drawn while not visible");
             }
 
             if(this.selected === true)
@@ -6312,6 +6359,7 @@ var NETDATA = window.NETDATA || {};
             :false;
 
         state.tmp.dygraph_include_zero = NETDATA.dataAttribute(state.element, 'dygraph-includezero', (state.tmp.dygraph_chart_type === 'stacked'));
+        var drawAxis = NETDATA.dataAttributeBoolean(state.element, 'dygraph-drawaxis', true);
 
         state.tmp.dygraph_options = {
             colors:                 NETDATA.dataAttribute(state.element, 'dygraph-colors', state.chartColors()),
@@ -6375,7 +6423,7 @@ var NETDATA = window.NETDATA || {};
                                     ),
             stackedGraph:           NETDATA.dataAttribute(state.element, 'dygraph-stackedgraph', (state.tmp.dygraph_chart_type === 'stacked')),
             stackedGraphNaNFill:    NETDATA.dataAttribute(state.element, 'dygraph-stackedgraphnanfill', 'none'),
-            drawAxis:               NETDATA.dataAttributeBoolean(state.element, 'dygraph-drawaxis', true),
+            drawAxis:               drawAxis,
             axisLabelFontSize:      NETDATA.dataAttribute(state.element, 'dygraph-axislabelfontsize', 10),
             axisLineColor:          NETDATA.dataAttribute(state.element, 'dygraph-axislinecolor', NETDATA.themes.current.axis),
             axisLineWidth:          NETDATA.dataAttribute(state.element, 'dygraph-axislinewidth', 1.0),
@@ -6399,6 +6447,7 @@ var NETDATA = window.NETDATA || {};
                     pixelsPerLabel: NETDATA.dataAttribute(state.element, 'dygraph-xpixelsperlabel', 50),
                     ticker: Dygraph.dateTicker,
                     axisLabelWidth: NETDATA.dataAttribute(state.element, 'dygraph-xaxislabelwidth', 60),
+                    drawAxis: NETDATA.dataAttributeBoolean(state.element, 'dygraph-drawxaxis', drawAxis),
                     axisLabelFormatter: function (d, gran) {
                         void(gran);
                         return NETDATA.dateTime.xAxisTimeString(d);
@@ -6408,6 +6457,7 @@ var NETDATA = window.NETDATA || {};
                     logscale: (NETDATA.chartLibraries.dygraph.isLogScale(state) === true)?true:undefined,
                     pixelsPerLabel: NETDATA.dataAttribute(state.element, 'dygraph-ypixelsperlabel', 15),
                     axisLabelWidth: NETDATA.dataAttribute(state.element, 'dygraph-yaxislabelwidth', 50),
+                    drawAxis: NETDATA.dataAttributeBoolean(state.element, 'dygraph-drawyaxis', drawAxis),
                     axisLabelFormatter: function (y) {
 
                         // unfortunately, we have to call this every single time
@@ -6985,6 +7035,8 @@ var NETDATA = window.NETDATA || {};
             state.tmp.dygraph_options.labelsSeparateLines = true;
             state.tmp.dygraph_options.rightGap = 0;
             state.tmp.dygraph_options.yRangePad = 1;
+            state.tmp.dygraph_options.axes.x.drawAxis = false;
+            state.tmp.dygraph_options.axes.y.drawAxis = false;
         }
 
         if(smooth === true) {
@@ -8430,7 +8482,7 @@ var NETDATA = window.NETDATA || {};
             enabled: true,
             xssRegexIgnore: new RegExp('^/api/v1/data\.result.data$'),
             format: function(state) { void(state); return 'json'; },
-            options: function(state) { return 'ms|flip' + (this.isLogScale(state)?'|abs':'').toString(); },
+            options: function(state) { return 'ms' + '%7C' + 'flip' + (this.isLogScale(state)?('%7C' + 'abs'):'').toString(); },
             legend: function(state) {
                 return (this.isSparkline(state) === false && NETDATA.dataAttributeBoolean(state.element, 'legend', true) === true) ? 'right-side' : null;
             },
@@ -8475,7 +8527,7 @@ var NETDATA = window.NETDATA || {};
             enabled: true,
             xssRegexIgnore: new RegExp('^/api/v1/data\.result$'),
             format: function(state) { void(state); return 'array'; },
-            options: function(state) { void(state); return 'flip|abs'; },
+            options: function(state) { void(state); return 'flip' + '%7C' + 'abs'; },
             legend: function(state) { void(state); return null; },
             autoresize: function(state) { void(state); return false; },
             max_updates_to_recreate: function(state) { void(state); return 5000; },
@@ -8495,7 +8547,7 @@ var NETDATA = window.NETDATA || {};
             enabled: true,
             xssRegexIgnore: new RegExp('^/api/v1/data\.result$'),
             format: function(state) { void(state); return 'ssvcomma'; },
-            options: function(state) { void(state); return 'null2zero|flip|abs'; },
+            options: function(state) { void(state); return 'null2zero' + '%7C' + 'flip' + '%7C' + 'abs'; },
             legend: function(state) { void(state); return null; },
             autoresize: function(state) { void(state); return false; },
             max_updates_to_recreate: function(state) { void(state); return 5000; },
@@ -8515,7 +8567,7 @@ var NETDATA = window.NETDATA || {};
             enabled: true,
             xssRegexIgnore: new RegExp('^/api/v1/data\.result.data$'),
             format: function(state) { void(state); return 'json'; },
-            options: function(state) { void(state); return 'objectrows|ms'; },
+            options: function(state) { void(state); return 'objectrows' + '%7C' + 'ms'; },
             legend: function(state) { void(state); return null; },
             autoresize: function(state) { void(state); return false; },
             max_updates_to_recreate: function(state) { void(state); return 50; },
@@ -8595,7 +8647,7 @@ var NETDATA = window.NETDATA || {};
             enabled: true,
             xssRegexIgnore: new RegExp('^/api/v1/data\.result.data$'),
             format: function(state) { void(state); return 'json'; },
-            options: function(state) { void(state); return 'objectrows|ms'; },
+            options: function(state) { void(state); return 'objectrows' + '%7C' + 'ms'; },
             legend: function(state) { void(state); return null; },
             autoresize: function(state) { void(state); return false; },
             max_updates_to_recreate: function(state) { void(state); return 5000; },
@@ -8695,7 +8747,9 @@ var NETDATA = window.NETDATA || {};
         {
             url: NETDATA.serverStatic + 'lib/fontawesome-all-5.0.1.min.js',
             async: true,
-            isAlreadyLoaded: function() { return false; }
+            isAlreadyLoaded: function() {
+                return (typeof netdataNoFontAwesome !== 'undefined' && netdataNoFontAwesome === true);
+            }
         },
         {
             url: NETDATA.serverStatic + 'lib/perfect-scrollbar-0.6.15.min.js',
@@ -8927,7 +8981,8 @@ var NETDATA = window.NETDATA || {};
 
             /*
             // cleanup old notifications with the same alarm_id as this one
-            // FIXME: it does not seem to work on any web browser!
+            // it does not seem to work on any web browser - so notifications cannot be removed
+
             var len = NETDATA.alarms.notifications_shown.length;
             while(len--) {
                 var n = NETDATA.alarms.notifications_shown[len];
diff --git a/web/dashboard.slate.css b/web/gui/dashboard.slate.css
index 9b1d50cd5..f1c9c4101 100644
--- a/web/dashboard.slate.css
+++ b/web/gui/dashboard.slate.css
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
 html,
 body {
     /*font-family: Calibri,"Segoe UI","Helvetica Neue",Helvetica,Arial,sans-serif;*/
diff --git a/web/dashboard_info.js b/web/gui/dashboard_info.js
index 55d454e03..139ac9340 100644
--- a/web/dashboard_info.js
+++ b/web/gui/dashboard_info.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 var netdataDashboard = window.netdataDashboard || {};
 
@@ -16,7 +17,8 @@ netdataDashboard.menu = {
     'services': {
         title: 'systemd Services',
         icon: '<i class="fas fa-cogs"></i>',
-        info: 'Resources utilization of systemd services. netdata monitors all systemd services via cgroups (the resources accounting used by containers). '
+        info: 'Resources utilization of systemd services. netdata monitors all systemd services via CGROUPS ' +
+            '(the resources accounting used by containers). '
     },
 
     'ap': {
@@ -28,7 +30,15 @@ netdataDashboard.menu = {
     'tc': {
         title: 'Quality of Service',
         icon: '<i class="fas fa-globe"></i>',
-        info: 'Netdata collects and visualizes <code>tc</code> class utilization using its <a href="https://github.com/firehol/netdata/blob/master/plugins.d/tc-qos-helper.sh" target="_blank">tc-helper plugin</a>. If you also use <a href="http://firehol.org/#fireqos" target="_blank">FireQOS</a> for setting up QoS, netdata automatically collects interface and class names. If your QoS configuration includes overheads calculation, the values shown here will include these overheads (the total bandwidth for the same interface as reported in the Network Interfaces section, will be lower than the total bandwidth reported here). QoS data collection may have a slight time difference compared to the interface (QoS data collection uses a BASH script, so a shift in data collection of a few milliseconds should be justified).'
+        info: 'Netdata collects and visualizes <code>tc</code> class utilization using its ' +
+            '<a href="https://github.com/netdata/netdata/blob/master/plugins.d/tc-qos-helper.sh" target="_blank">tc-helper plugin</a>. ' +
+            'If you also use <a href="http://firehol.org/#fireqos" target="_blank">FireQOS</a> for setting up QoS, ' +
+            'netdata automatically collects interface and class names. If your QoS configuration includes overheads ' +
+            'calculation, the values shown here will include these overheads (the total bandwidth for the same ' +
+            'interface as reported in the Network Interfaces section, will be lower than the total bandwidth ' +
+            'reported here). QoS data collection may have a slight time difference compared to the interface ' +
+            '(QoS data collection uses a BASH script, so a shift in data collection of a few milliseconds ' +
+            'should be justified).'
     },
 
     'net': {
@@ -37,10 +47,27 @@ netdataDashboard.menu = {
         info: 'Performance metrics for network interfaces.'
     },
 
+    'ip': {
+        title: 'Networking Stack',
+        icon: '<i class="fas fa-cloud"></i>',
+        info: function (os) {
+            if(os === "linux")
+                return 'Metrics for the networking stack of the system. These metrics are collected from <code>/proc/net/netstat</code>, apply to both IPv4 and IPv6 traffic and are related to operation of the kernel networking stack.';
+            else
+                return 'Metrics for the networking stack of the system.';
+        }
+    },
+
     'ipv4': {
         title: 'IPv4 Networking',
         icon: '<i class="fas fa-cloud"></i>',
-        info: 'Metrics for the IPv4 stack of the system. <a href="https://en.wikipedia.org/wiki/IPv4" target="_blank">Internet Protocol version 4 (IPv4)</a> is the fourth version of the Internet Protocol (IP). It is one of the core protocols of standards-based internetworking methods in the Internet. IPv4 is a connectionless protocol for use on packet-switched networks. It operates on a best effort delivery model, in that it does not guarantee delivery, nor does it assure proper sequencing or avoidance of duplicate delivery. These aspects, including data integrity, are addressed by an upper layer transport protocol, such as the Transmission Control Protocol (TCP).'
+        info: 'Metrics for the IPv4 stack of the system. ' +
+            '<a href="https://en.wikipedia.org/wiki/IPv4" target="_blank">Internet Protocol version 4 (IPv4)</a> is ' +
+            'the fourth version of the Internet Protocol (IP). It is one of the core protocols of standards-based ' +
+            'internetworking methods in the Internet. IPv4 is a connectionless protocol for use on packet-switched ' +
+            'networks. It operates on a best effort delivery model, in that it does not guarantee delivery, nor does ' +
+            'it assure proper sequencing or avoidance of duplicate delivery. These aspects, including data integrity, ' +
+            'are addressed by an upper layer transport protocol, such as the Transmission Control Protocol (TCP).'
     },
 
     'ipv6': {
@@ -49,6 +76,12 @@ netdataDashboard.menu = {
         info: 'Metrics for the IPv6 stack of the system. <a href="https://en.wikipedia.org/wiki/IPv6" target="_blank">Internet Protocol version 6 (IPv6)</a> is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet. IPv6 was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion. IPv6 is intended to replace IPv4.'
     },
 
+    'sctp': {
+        title: 'SCTP Networking',
+        icon: '<i class="fas fa-cloud"></i>',
+        info: '<a href="https://en.wikipedia.org/wiki/Stream_Control_Transmission_Protocol" target="_blank">Stream Control Transmission Protocol (SCTP)</a> is a computer network protocol which operates at the transport layer and serves a role similar to the popular protocols TCP and UDP. SCTP provides some of the features of both UDP and TCP: it is message-oriented like UDP and ensures reliable, in-sequence transport of messages with congestion control like TCP. It differs from those protocols by providing multi-homing and redundant paths to increase resilience and reliability.'
+    },
+
     'ipvs': {
         title: 'IP Virtual Server',
         icon: '<i class="fas fa-eye"></i>',
@@ -130,7 +163,7 @@ netdataDashboard.menu = {
     'apps': {
         title: 'Applications',
         icon: '<i class="fas fa-heartbeat"></i>',
-        info: 'Per application statistics are collected using netdata\'s <code>apps.plugin</code>. This plugin walks through all processes and aggregates statistics for applications of interest, defined in <code>/etc/netdata/apps_groups.conf</code> (the default is <a href="https://github.com/firehol/netdata/blob/master/conf.d/apps_groups.conf" target="_blank">here</a>). The plugin internally builds a process tree (much like <code>ps fax</code> does), and groups processes together (evaluating both child and parent processes) so that the result is always a chart with a predefined set of dimensions (of course, only application groups found running are reported). The reported values are compatible with <code>top</code>, although the netdata plugin counts also the resources of exited children (unlike <code>top</code> which shows only the resources of the currently running processes). So for processes like shell scripts, the reported values include the resources used by the commands these scripts run within each timeframe.',
+        info: 'Per application statistics are collected using netdata\'s <code>apps.plugin</code>. This plugin walks through all processes and aggregates statistics for applications of interest, defined in <code>/etc/netdata/apps_groups.conf</code> (the default is <a href="https://github.com/netdata/netdata/blob/master/conf.d/apps_groups.conf" target="_blank">here</a>). The plugin internally builds a process tree (much like <code>ps fax</code> does), and groups processes together (evaluating both child and parent processes) so that the result is always a chart with a predefined set of dimensions (of course, only application groups found running are reported). The reported values are compatible with <code>top</code>, although the netdata plugin counts also the resources of exited children (unlike <code>top</code> which shows only the resources of the currently running processes). So for processes like shell scripts, the reported values include the resources used by the commands these scripts run within each timeframe.',
         height: 1.5
     },
 
@@ -189,6 +222,12 @@ netdataDashboard.menu = {
         info: 'Performance metrics for <b>memcached</b>. Memcached is a general-purpose distributed memory caching system. It is often used to speed up dynamic database-driven websites by caching data and objects in RAM to reduce the number of times an external data source (such as a database or API) must be read.'
     },
 
+    'monit': {
+        title: 'monit',
+        icon: '<i class="fas fa-database"></i>',
+        info: 'Statuses of checks in <b>monit</b>. Monit is a utility for managing and monitoring processes, programs, files, directories and filesystems on a Unix system. Monit conducts automatic maintenance and repair and can execute meaningful causal actions in error situations.'
+    },
+
     'mysql': {
         title: 'MySQL',
         icon: '<i class="fas fa-database"></i>',
@@ -207,6 +246,12 @@ netdataDashboard.menu = {
         info: 'Performance metrics for <b>redis</b>. Redis (REmote DIctionary Server) is a software project that implements data structure servers. It is open-source, networked, in-memory, and stores keys with optional durability.'
     },
 
+    'rethinkdbs': {
+        title: 'RethinkDB',
+        icon: '<i class="fas fa-database"></i>',
+        info: 'Performance metrics for <b>rethinkdb</b>. RethinkDB is the first open-source scalable database built for realtime applications'
+    },
+
     'retroshare': {
         title: 'RetroShare',
         icon: '<i class="fas fa-share-alt"></i>',
@@ -270,7 +315,7 @@ netdataDashboard.menu = {
     'web_log': {
         title: undefined,
         icon: '<i class="fas fa-file-alt"></i>',
-        info: 'Information extracted from a server log file. <code>web_log</code> plugin incrementally parses the server log file to provide, in real-time, a break down of key server performance metrics. For web servers, an extended log file format may optionally be used (for <code>nginx</code> and <code>apache</code>) offering timing information and bandwidth for both requests and responses. <code>web_log</code> plugin may also be configured to provide a break down of requests per URL pattern (check <a href="https://github.com/firehol/netdata/blob/master/conf.d/python.d/web_log.conf" target="_blank"><code>/etc/netdata/python.d/web_log.conf</code></a>).'
+        info: 'Information extracted from a server log file. <code>web_log</code> plugin incrementally parses the server log file to provide, in real-time, a break down of key server performance metrics. For web servers, an extended log file format may optionally be used (for <code>nginx</code> and <code>apache</code>) offering timing information and bandwidth for both requests and responses. <code>web_log</code> plugin may also be configured to provide a break down of requests per URL pattern (check <a href="https://github.com/netdata/netdata/blob/master/conf.d/python.d/web_log.conf" target="_blank"><code>/etc/netdata/python.d/web_log.conf</code></a>).'
     },
 
     'named': {
@@ -359,11 +404,46 @@ netdataDashboard.menu = {
         title: 'ntpd',
         icon: '<i class="fas fa-clock"></i>',
         info: 'Provides statistics for the internal variables of the Network Time Protocol daemon <b><a href="http://www.ntp.org/">ntpd</a></b> and optional including the configured peers (if enabled in the module configuration). The module presents the performance metrics as shown by <b><a href="http://doc.ntp.org/current-stable/ntpq.html">ntpq</a></b> (the standard NTP query program) using NTP mode 6 UDP packets to communicate with the NTP server.'
+    },
+
+    'spigotmc': {
+        title: 'Spigot MC',
+        icon: '<i class="fas fa-eye"></i>',
+        info: 'Provides basic performance statistics for the <b><a href="https://www.spigotmc.org/">Spigot Minecraft</a></b> server.'
+    },
+
+    'unbound': {
+        title: 'Unbound',
+        icon: '<i class="fas fa-tag"></i>',
+        info: undefined
+    },
+
+    'boinc': {
+        title: 'BOINC',
+        icon: '<i class="fas fa-microchip"></i>',
+        info: 'Provides task counts for <b><a href="http://boinc.berkeley.edu/">BOINC</a></b> distributed computing clients.'
+    },
+
+    'w1sensor': {
+        title: '1-Wire Sensors',
+        icon: '<i class="fas fa-thermometer-half"></i>',
+        info: 'Data derived from <a href="https://en.wikipedia.org/wiki/1-Wire">1-Wire</a> sensors.  Currently temperature sensors are automatically detected.'
+    },
+
+    'logind': {
+        title: 'Logind',
+        icon: '<i class="fas fa-user"></i>',
+        info: undefined
+    },
+
+    'linux_power_supply': {
+        title: 'Power Supply',
+        icon: '<i class="fas fa-battery-half"></i>',
+        info: 'Statistics for the various system power supplies.'
     }
 };
 
 
-
 // ----------------------------------------------------------------------------
 // submenus
 
@@ -414,7 +494,7 @@ netdataDashboard.submenu = {
     },
 
     'web_log.urls': {
-        info: 'Number of requests for each <code>URL pattern</code> defined in <a href="https://github.com/firehol/netdata/blob/master/conf.d/python.d/web_log.conf" target="_blank"><code>/etc/netdata/python.d/web_log.conf</code></a>. This chart counts all requests matching the URL patterns defined, independently of the web server response codes (i.e. both successful and unsuccessful).'
+        info: 'Number of requests for each <code>URL pattern</code> defined in <a href="https://github.com/netdata/netdata/blob/master/conf.d/python.d/web_log.conf" target="_blank"><code>/etc/netdata/python.d/web_log.conf</code></a>. This chart counts all requests matching the URL patterns defined, independently of the web server response codes (i.e. both successful and unsuccessful).'
     },
 
     'web_log.clients': {
@@ -438,7 +518,7 @@ netdataDashboard.submenu = {
         info: 'Non-Uniform Memory Access (NUMA) is a hierarchical memory design the memory access time is dependent on locality. Under NUMA, a processor can access its own local memory faster than non-local memory (memory local to another processor or memory shared between processors). The individual metrics are described in the <a href="https://www.kernel.org/doc/Documentation/numastat.txt" target="_blank">Linux kernel documentation</a>.'
     },
 
-    'ipv4.ecn': {
+    'ip.ecn': {
         info: '<a href="https://en.wikipedia.org/wiki/Explicit_Congestion_Notification" target="_blank">Explicit Congestion Notification (ECN)</a> is a TCP extension that allows end-to-end notification of network congestion without dropping packets. ECN is an optional feature that may be used between two ECN-enabled endpoints when the underlying network infrastructure also supports it.'
     },
 
@@ -464,9 +544,9 @@ netdataDashboard.submenu = {
 
     'system.softnet_stat': {
         title: 'softnet',
-        info: function(os) {
-            if(os === 'linux')
-                return 'Statistics for CPUs SoftIRQs related to network receive work. Break down per CPU core can be found at <a href="#menu_cpu_submenu_softnet_stat">CPU / softnet statistics</a>. <b>processed</b> states the number of packets processed, <b>dropped</b> is the number packets dropped because the network device backlog was full (to fix them on Linux use <code>sysctl</code> to increase <code>net.core.netdev_max_backlog</code>), <b>squeezed</b> is the number of packets dropped because the network device budget ran out (to fix them on Linux use <code>sysctl</code> to increase <code>net.core.netdev_budget</code>). More information about identifying and troubleshooting network driver related issues can be found at <a href="https://access.redhat.com/sites/default/files/attachments/20150325_network_performance_tuning.pdf" target="_blank">Red Hat Enterprise Linux Network Performance Tuning Guide</a>.';
+        info: function (os) {
+            if (os === 'linux')
+                return 'Statistics for CPUs SoftIRQs related to network receive work. Break down per CPU core can be found at <a href="#menu_cpu_submenu_softnet_stat">CPU / softnet statistics</a>. <b>processed</b> states the number of packets processed, <b>dropped</b> is the number packets dropped because the network device backlog was full (to fix them on Linux use <code>sysctl</code> to increase <code>net.core.netdev_max_backlog</code>), <b>squeezed</b> is the number of packets dropped because the network device budget ran out (to fix them on Linux use <code>sysctl</code> to increase <code>net.core.netdev_budget</code> and/or <code>net.core.netdev_budget_usecs</code>). More information about identifying and troubleshooting network driver related issues can be found at <a href="https://access.redhat.com/sites/default/files/attachments/20150325_network_performance_tuning.pdf" target="_blank">Red Hat Enterprise Linux Network Performance Tuning Guide</a>.';
             else
                 return 'Statistics for CPUs SoftIRQs related to network receive work.';
         }
@@ -474,9 +554,9 @@ netdataDashboard.submenu = {
 
     'cpu.softnet_stat': {
         title: 'softnet',
-        info: function(os) {
-            if(os === 'linux')
-                return 'Statistics for per CPUs core SoftIRQs related to network receive work. Total for all CPU cores can be found at <a href="#menu_system_submenu_softnet_stat">System / softnet statistics</a>. <b>processed</b> states the number of packets processed, <b>dropped</b> is the number packets dropped because the network device backlog was full (to fix them on Linux use <code>sysctl</code> to increase <code>net.core.netdev_max_backlog</code>), <b>squeezed</b> is the number of packets dropped because the network device budget ran out (to fix them on Linux use <code>sysctl</code> to increase <code>net.core.netdev_budget</code>). More information about identifying and troubleshooting network driver related issues can be found at <a href="https://access.redhat.com/sites/default/files/attachments/20150325_network_performance_tuning.pdf" target="_blank">Red Hat Enterprise Linux Network Performance Tuning Guide</a>.';
+        info: function (os) {
+            if (os === 'linux')
+                return 'Statistics for per CPUs core SoftIRQs related to network receive work. Total for all CPU cores can be found at <a href="#menu_system_submenu_softnet_stat">System / softnet statistics</a>. <b>processed</b> states the number of packets processed, <b>dropped</b> is the number packets dropped because the network device backlog was full (to fix them on Linux use <code>sysctl</code> to increase <code>net.core.netdev_max_backlog</code>), <b>squeezed</b> is the number of packets dropped because the network device budget ran out (to fix them on Linux use <code>sysctl</code> to increase <code>net.core.netdev_budget</code> and/or <code>net.core.netdev_budget_usecs</code>). More information about identifying and troubleshooting network driver related issues can be found at <a href="https://access.redhat.com/sites/default/files/attachments/20150325_network_performance_tuning.pdf" target="_blank">Red Hat Enterprise Linux Network Performance Tuning Guide</a>.';
             else
                 return 'Statistics for per CPUs core SoftIRQs related to network receive work. Total for all CPU cores can be found at <a href="#menu_system_submenu_softnet_stat">System / softnet statistics</a>.';
         }
@@ -523,7 +603,6 @@ netdataDashboard.submenu = {
 };
 
 
-
 // ----------------------------------------------------------------------------
 // chart
 
@@ -538,7 +617,7 @@ netdataDashboard.submenu = {
 //
 netdataDashboard.context = {
     'system.cpu': {
-        info: function(os) {
+        info: function (os) {
             void(os);
             return 'Total CPU utilization (all cores). 100% here means there is no CPU idle time at all. You can get per core usage at the <a href="#menu_cpu">CPUs</a> section and per application usage at the <a href="#menu_apps">Applications Monitoring</a> section.'
                 + netdataDashboard.sparkline('<br/>Keep an eye on <b>iowait</b> ', 'system.cpu', 'iowait', '%', '. If it is constantly high, your disks are a bottleneck and they slow your system down.')
@@ -553,10 +632,10 @@ netdataDashboard.context = {
     },
 
     'system.io': {
-        info: function(os) {
+        info: function (os) {
             var s = 'Total Disk I/O, for all physical disks. You can get detailed information about each disk at the <a href="#menu_disk">Disks</a> section and per application Disk usage at the <a href="#menu_apps">Applications Monitoring</a> section.';
 
-            if(os === 'linux')
+            if (os === 'linux')
                 return s + ' Physical are all the disks that are listed in <code>/sys/block</code>, but do not exist in <code>/sys/devices/virtual/block</code>.';
             else
                 return s;
@@ -615,16 +694,20 @@ netdataDashboard.context = {
     },
 
     'system.net': {
-        info: function(os) {
+        info: function (os) {
             var s = 'Total bandwidth of all physical network interfaces. This does not include <code>lo</code>, VPNs, network bridges, IFB devices, bond interfaces, etc. Only the bandwidth of physical network interfaces is aggregated.';
 
-            if(os === 'linux')
+            if (os === 'linux')
                 return s + ' Physical are all the network interfaces that are listed in <code>/proc/net/dev</code>, but do not exist in <code>/sys/devices/virtual/net</code>.';
             else
                 return s;
         }
     },
 
+    'system.ip': {
+        info: 'Total IP traffic in the system.'
+    },
+
     'system.ipv4': {
         info: 'Total IPv4 Traffic.'
     },
@@ -676,9 +759,9 @@ netdataDashboard.context = {
 
     'mem.ksm_ratios': {
         heads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-gauge-max-value="100"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Savings"'
@@ -694,7 +777,7 @@ netdataDashboard.context = {
     },
 
     'mem.pgfaults': {
-    	info: 'A <a href="https://en.wikipedia.org/wiki/Page_fault" target="_blank">page fault</a> is a type of interrupt, called trap, raised by computer hardware when a running program accesses a memory page that is mapped into the virtual address space, but not actually loaded into main memory. If the page is loaded in memory at the time the fault is generated, but is not marked in the memory management unit as being loaded in memory, then it is called a <b>minor</b> or soft page fault. A <b>major</b> page fault is generated when the system needs to load the memory page from disk or swap memory.'
+        info: 'A <a href="https://en.wikipedia.org/wiki/Page_fault" target="_blank">page fault</a> is a type of interrupt, called trap, raised by computer hardware when a running program accesses a memory page that is mapped into the virtual address space, but not actually loaded into main memory. If the page is loaded in memory at the time the fault is generated, but is not marked in the memory management unit as being loaded in memory, then it is called a <b>minor</b> or soft page fault. A <b>major</b> page fault is generated when the system needs to load the memory page from disk or swap memory.'
     },
 
     'mem.committed': {
@@ -734,16 +817,47 @@ netdataDashboard.context = {
     },
 
     // ------------------------------------------------------------------------
-    // IPv4
+    // IP
+
+    'ip.inerrors': {
+        info: 'Errors encountered during the reception of IP packets. ' +
+            '<code>noroutes</code> (<code>InNoRoutes</code>) counts packets that were dropped because there was no route to send them. ' +
+            '<code>truncated</code> (<code>InTruncatedPkts</code>) counts packets which is being discarded because the datagram frame didn\'t carry enough data. ' +
+            '<code>checksum</code> (<code>InCsumErrors</code>) counts packets that were dropped because they had wrong checksum. '
+    },
 
-    'ipv4.tcpmemorypressures': {
+    'ip.tcpmemorypressures': {
         info: 'Number of times a socket was put in <b>memory pressure</b> due to a non fatal memory allocation failure (the kernel attempts to work around this situation by reducing the send buffers, etc).'
     },
 
-    'ipv4.tcpconnaborts': {
+    'ip.tcpconnaborts': {
         info: 'TCP connection aborts. <b>baddata</b> (<code>TCPAbortOnData</code>) happens while the connection is on <code>FIN_WAIT1</code> and the kernel receives a packet with a sequence number beyond the last one for this connection - the kernel responds with <code>RST</code> (closes the connection). <b>userclosed</b> (<code>TCPAbortOnClose</code>) happens when the kernel receives data on an already closed connection and responds with <code>RST</code>. <b>nomemory</b> (<code>TCPAbortOnMemory</code> happens when there are too many orphaned sockets (not attached to an fd) and the kernel has to drop a connection - sometimes it will send an <code>RST</code>, sometimes it won\'t. <b>timeout</b> (<code>TCPAbortOnTimeout</code>) happens when a connection times out. <b>linger</b> (<code>TCPAbortOnLinger</code>) happens when the kernel killed a socket that was already closed by the application and lingered around for long enough. <b>failed</b> (<code>TCPAbortFailed</code>) happens when the kernel attempted to send an <code>RST</code> but failed because there was no memory available.'
     },
 
+    'ip.tcp_syn_queue': {
+        info: 'The <b>SYN queue</b> of the kernel tracks TCP handshakes until connections get fully established. ' +
+            'It overflows when too many incoming TCP connection requests hang in the half-open state and the server ' +
+            'is not configured to fall back to SYN cookies*. Overflows are usually caused by SYN flood DoS attacks ' +
+            '(i.e. someone sends lots of SYN packets and never completes the handshakes). ' +
+            '<b>drops</b> (or <code>TcpExtTCPReqQFullDrop</code>) is the number of connections dropped because the ' +
+            'SYN queue was full and SYN cookies were disabled. ' +
+            '<b>cookies</b> (or <code>TcpExtTCPReqQFullDoCookies</code>) is the number of SYN cookies sent because the ' +
+            'SYN queue was full.'
+    },
+
+    'ip.tcp_accept_queue': {
+        info: 'The <b>accept queue</b> of the kernel holds the fully established TCP connections, waiting to be handled ' +
+            'by the listening application. <b>overflows</b> (or <code>ListenOverflows</code>) is the number of ' +
+            'established connections that could not be handled because the receive queue of the listening application ' +
+            'was full. <b>drops</b> (or <code>ListenDrops</code>) is the number of incoming ' +
+            'connections that could not be handled, including SYN floods, overflows, out of memory, security issues, ' +
+            'no route to destination, reception of related ICMP messages, socket is broadcast or multicast.'
+    },
+
+
+    // ------------------------------------------------------------------------
+    // IPv4
+
     'ipv4.tcpsock': {
         info: 'The number of established TCP connections (known as <code>CurrEstab</code>). This is a snapshot of the established connections at the time of measurement (i.e. a connection established and a connection disconnected within the same iteration will not affect this metric).'
     },
@@ -766,11 +880,6 @@ netdataDashboard.context = {
             + ' <code>TCPSynRetrans</code> shows retries for new outbound TCP connections, which can indicate general connectivity issues or backlog on the remote host.'
     },
 
-    'ipv4.tcplistenissues': {
-        info: '<b>overflows</b> (or <code>ListenOverflows</code>) is the number of incoming connections that could not be handled because the receive queue of the application was full (for both IPv4 and IPv6).'
-            + ' <b>drops</b> (or <code>ListenDrops</code>) is the number of incoming connections that could not be handled, including SYN floods, overflows, out of memory, security issues, no route to destination, reception of related ICMP messages, socket is broadcast or multicast (for both IPv4 and IPv6).'
-    },
-
     // ------------------------------------------------------------------------
     // APPS
 
@@ -783,7 +892,7 @@ netdataDashboard.context = {
     },
 
     'apps.vmem': {
-        info: 'Virtual memory allocated by applications. Please check <a href="https://github.com/firehol/netdata/wiki/netdata-virtual-memory-size" target="_blank">this article</a> for more information.'
+        info: 'Virtual memory allocated by applications. Please check <a href="https://github.com/netdata/netdata/wiki/netdata-virtual-memory-size" target="_blank">this article</a> for more information.'
     },
 
     'apps.preads': {
@@ -806,7 +915,7 @@ netdataDashboard.context = {
     },
 
     'users.vmem': {
-        info: 'Virtual memory allocated per user. Please check <a href="https://github.com/firehol/netdata/wiki/netdata-virtual-memory-size" target="_blank">this article</a> for more information.'
+        info: 'Virtual memory allocated per user. Please check <a href="https://github.com/netdata/netdata/wiki/netdata-virtual-memory-size" target="_blank">this article</a> for more information.'
     },
 
     'users.preads': {
@@ -829,7 +938,7 @@ netdataDashboard.context = {
     },
 
     'groups.vmem': {
-        info: 'Virtual memory allocated per user group. Please check <a href="https://github.com/firehol/netdata/wiki/netdata-virtual-memory-size" target="_blank">this article</a> for more information.'
+        info: 'Virtual memory allocated per user group. Please check <a href="https://github.com/netdata/netdata/wiki/netdata-virtual-memory-size" target="_blank">this article</a> for more information.'
     },
 
     'groups.preads': {
@@ -845,10 +954,10 @@ netdataDashboard.context = {
 
     'tc.qos': {
         heads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
 
-                if(id.match(/.*-ifb$/))
+                if (id.match(/.*-ifb$/))
                     return netdataDashboard.gaugeChart('Inbound', '12%', '', '#5555AA');
                 else
                     return netdataDashboard.gaugeChart('Outbound', '12%', '', '#AA9900');
@@ -861,9 +970,9 @@ netdataDashboard.context = {
 
     'net.net': {
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                if(id.match(/^cgroup_.*/)) {
+                if (id.match(/^cgroup_.*/)) {
                     var iface;
                     try {
                         iface = ' ' + id.substring(id.lastIndexOf('.net_') + 5, id.length);
@@ -876,9 +985,9 @@ netdataDashboard.context = {
                 else
                     return '';
             },
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                if(id.match(/^cgroup_.*/)) {
+                if (id.match(/^cgroup_.*/)) {
                     var iface;
                     try {
                         iface = ' ' + id.substring(id.lastIndexOf('.net_') + 5, id.length);
@@ -893,16 +1002,16 @@ netdataDashboard.context = {
             }
         ],
         heads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                if(!id.match(/^cgroup_.*/))
+                if (!id.match(/^cgroup_.*/))
                     return netdataDashboard.gaugeChart('Received', '12%', 'received');
                 else
                     return '';
             },
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                if(!id.match(/^cgroup_.*/))
+                if (!id.match(/^cgroup_.*/))
                     return netdataDashboard.gaugeChart('Sent', '12%', 'sent');
                 else
                     return '';
@@ -995,38 +1104,38 @@ netdataDashboard.context = {
 
     'mysql.queries': {
         info: 'The number of statements executed by the server.<ul>' +
-        '<li><strong>queries</strong> counts the statements executed within stored SQL programs.</li>' +
-        '<li><strong>questions</strong> counts the statements sent to the mysql server by mysql clients.</li>' +
-        '<li><strong>slow queries</strong> counts the number of statements that took more than <a href="http://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_long_query_time" target="_blank">long_query_time</a> seconds to be executed.' +
-        ' For more information about slow queries check the mysql <a href="http://dev.mysql.com/doc/refman/5.7/en/slow-query-log.html" target="_blank">slow query log</a>.</li>' +
-        '</ul>'
+            '<li><strong>queries</strong> counts the statements executed within stored SQL programs.</li>' +
+            '<li><strong>questions</strong> counts the statements sent to the mysql server by mysql clients.</li>' +
+            '<li><strong>slow queries</strong> counts the number of statements that took more than <a href="http://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_long_query_time" target="_blank">long_query_time</a> seconds to be executed.' +
+            ' For more information about slow queries check the mysql <a href="http://dev.mysql.com/doc/refman/5.7/en/slow-query-log.html" target="_blank">slow query log</a>.</li>' +
+            '</ul>'
     },
 
     'mysql.handlers': {
         info: 'Usage of the internal handlers of mysql. This chart provides very good insights of what the mysql server is actually doing.' +
-        ' (if the chart is not showing all these dimensions it is because they are zero - set <strong>Which dimensions to show?</strong> to <strong>All</strong> from the dashboard settings, to render even the zero values)<ul>' +
-        '<li><strong>commit</strong>, the number of internal <a href="http://dev.mysql.com/doc/refman/5.7/en/commit.html" target="_blank">COMMIT</a> statements.</li>' +
-        '<li><strong>delete</strong>, the number of times that rows have been deleted from tables.</li>' +
-        '<li><strong>prepare</strong>, a counter for the prepare phase of two-phase commit operations.</li>' +
-        '<li><strong>read first</strong>, the number of times the first entry in an index was read. A high value suggests that the server is doing a lot of full index scans; e.g. <strong>SELECT col1 FROM foo</strong>, with col1 indexed.</li>' +
-        '<li><strong>read key</strong>, the number of requests to read a row based on a key. If this value is high, it is a good indication that your tables are properly indexed for your queries.</li>' +
-        '<li><strong>read next</strong>, the number of requests to read the next row in key order. This value is incremented if you are querying an index column with a range constraint or if you are doing an index scan.</li>' +
-        '<li><strong>read prev</strong>, the number of requests to read the previous row in key order. This read method is mainly used to optimize <strong>ORDER BY ... DESC</strong>.</li>' +
-        '<li><strong>read rnd</strong>, the number of requests to read a row based on a fixed position. A high value indicates you are doing a lot of queries that require sorting of the result. You probably have a lot of queries that require MySQL to scan entire tables or you have joins that do not use keys properly.</li>' +
-        '<li><strong>read rnd next</strong>, the number of requests to read the next row in the data file. This value is high if you are doing a lot of table scans. Generally this suggests that your tables are not properly indexed or that your queries are not written to take advantage of the indexes you have.</li>' +
-        '<li><strong>rollback</strong>, the number of requests for a storage engine to perform a rollback operation.</li>' +
-        '<li><strong>savepoint</strong>, the number of requests for a storage engine to place a savepoint.</li>' +
-        '<li><strong>savepoint rollback</strong>, the number of requests for a storage engine to roll back to a savepoint.</li>' +
-        '<li><strong>update</strong>, the number of requests to update a row in a table.</li>' +
-        '<li><strong>write</strong>, the number of requests to insert a row in a table.</li>' +
-        '</ul>'
+            ' (if the chart is not showing all these dimensions it is because they are zero - set <strong>Which dimensions to show?</strong> to <strong>All</strong> from the dashboard settings, to render even the zero values)<ul>' +
+            '<li><strong>commit</strong>, the number of internal <a href="http://dev.mysql.com/doc/refman/5.7/en/commit.html" target="_blank">COMMIT</a> statements.</li>' +
+            '<li><strong>delete</strong>, the number of times that rows have been deleted from tables.</li>' +
+            '<li><strong>prepare</strong>, a counter for the prepare phase of two-phase commit operations.</li>' +
+            '<li><strong>read first</strong>, the number of times the first entry in an index was read. A high value suggests that the server is doing a lot of full index scans; e.g. <strong>SELECT col1 FROM foo</strong>, with col1 indexed.</li>' +
+            '<li><strong>read key</strong>, the number of requests to read a row based on a key. If this value is high, it is a good indication that your tables are properly indexed for your queries.</li>' +
+            '<li><strong>read next</strong>, the number of requests to read the next row in key order. This value is incremented if you are querying an index column with a range constraint or if you are doing an index scan.</li>' +
+            '<li><strong>read prev</strong>, the number of requests to read the previous row in key order. This read method is mainly used to optimize <strong>ORDER BY ... DESC</strong>.</li>' +
+            '<li><strong>read rnd</strong>, the number of requests to read a row based on a fixed position. A high value indicates you are doing a lot of queries that require sorting of the result. You probably have a lot of queries that require MySQL to scan entire tables or you have joins that do not use keys properly.</li>' +
+            '<li><strong>read rnd next</strong>, the number of requests to read the next row in the data file. This value is high if you are doing a lot of table scans. Generally this suggests that your tables are not properly indexed or that your queries are not written to take advantage of the indexes you have.</li>' +
+            '<li><strong>rollback</strong>, the number of requests for a storage engine to perform a rollback operation.</li>' +
+            '<li><strong>savepoint</strong>, the number of requests for a storage engine to place a savepoint.</li>' +
+            '<li><strong>savepoint rollback</strong>, the number of requests for a storage engine to roll back to a savepoint.</li>' +
+            '<li><strong>update</strong>, the number of requests to update a row in a table.</li>' +
+            '<li><strong>write</strong>, the number of requests to insert a row in a table.</li>' +
+            '</ul>'
     },
 
     'mysql.table_locks': {
         info: 'MySQL table locks counters: <ul>' +
-        '<li><strong>immediate</strong>, the number of times that a request for a table lock could be granted immediately.</li>' +
-        '<li><strong>waited</strong>, the number of times that a request for a table lock could not be granted immediately and a wait was needed. If this is high and you have performance problems, you should first optimize your queries, and then either split your table or tables or use replication.</li>' +
-        '</ul>'
+            '<li><strong>immediate</strong>, the number of times that a request for a table lock could be granted immediately.</li>' +
+            '<li><strong>waited</strong>, the number of times that a request for a table lock could not be granted immediately and a wait was needed. If this is high and you have performance problems, you should first optimize your queries, and then either split your table or tables or use replication.</li>' +
+            '</ul>'
     },
 
     // ------------------------------------------------------------------------
@@ -1035,57 +1144,57 @@ netdataDashboard.context = {
 
     'postgres.db_stat_blks': {
         info: 'Blocks reads from disk or cache.<ul>' +
-        '<li><strong>blks_read:</strong> number of disk blocks read in this database.</li>' +
-        '<li><strong>blks_hit:</strong> number of times disk blocks were found already in the buffer cache, so that a read was not necessary (this only includes hits in the PostgreSQL buffer cache, not the operating system&#39;s file system cache)</li>' +
-        '</ul>'
+            '<li><strong>blks_read:</strong> number of disk blocks read in this database.</li>' +
+            '<li><strong>blks_hit:</strong> number of times disk blocks were found already in the buffer cache, so that a read was not necessary (this only includes hits in the PostgreSQL buffer cache, not the operating system&#39;s file system cache)</li>' +
+            '</ul>'
     },
     'postgres.db_stat_tuple_write': {
         info: '<ul><li>Number of rows inserted/updated/deleted.</li>' +
-        '<li><strong>conflicts:</strong> number of queries canceled due to conflicts with recovery in this database. (Conflicts occur only on standby servers; see <a href="https://www.postgresql.org/docs/10/static/monitoring-stats.html#PG-STAT-DATABASE-CONFLICTS-VIEW" target="_blank">pg_stat_database_conflicts</a> for details.)</li>' +
-        '</ul>'
+            '<li><strong>conflicts:</strong> number of queries canceled due to conflicts with recovery in this database. (Conflicts occur only on standby servers; see <a href="https://www.postgresql.org/docs/10/static/monitoring-stats.html#PG-STAT-DATABASE-CONFLICTS-VIEW" target="_blank">pg_stat_database_conflicts</a> for details.)</li>' +
+            '</ul>'
     },
     'postgres.db_stat_temp_bytes': {
         info: 'Temporary files can be created on disk for sorts, hashes, and temporary query results.'
     },
     'postgres.db_stat_temp_files': {
         info: '<ul>' +
-        '<li><strong>files:</strong> number of temporary files created by queries. All temporary files are counted, regardless of why the temporary file was created (e.g., sorting or hashing).</li>' +
-        '</ul>'
+            '<li><strong>files:</strong> number of temporary files created by queries. All temporary files are counted, regardless of why the temporary file was created (e.g., sorting or hashing).</li>' +
+            '</ul>'
     },
     'postgres.archive_wal': {
-         info: 'WAL archiving.<ul>' +
-        '<li><strong>total:</strong> total files.</li>' +
-        '<li><strong>ready:</strong> WAL waiting to be archived.</li>' +
-        '<li><strong>done:</strong> WAL successfully archived' +
-        'Ready WAL can indicate archive_command is in error, see <a href="https://www.postgresql.org/docs/current/static/continuous-archiving.html" target="_blank">Continuous Archiving and Point-in-Time Recovery</a>.</li>' +
-        '</ul>'
+        info: 'WAL archiving.<ul>' +
+            '<li><strong>total:</strong> total files.</li>' +
+            '<li><strong>ready:</strong> WAL waiting to be archived.</li>' +
+            '<li><strong>done:</strong> WAL successfully archived. ' +
+            'Ready WAL can indicate archive_command is in error, see <a href="https://www.postgresql.org/docs/current/static/continuous-archiving.html" target="_blank">Continuous Archiving and Point-in-Time Recovery</a>.</li>' +
+            '</ul>'
     },
     'postgres.checkpointer': {
         info: 'Number of checkpoints.<ul>' +
-        '<li><strong>scheduled:</strong> when checkpoint_timeout is reached.</li>' +
-        '<li><strong>requested:</strong> when max_wal_size is reached.</li>' +
-        '</ul>' +
-        'For more information see <a href="https://www.postgresql.org/docs/current/static/wal-configuration.html" target="_blank">WAL Configuration</a>.'
+            '<li><strong>scheduled:</strong> when checkpoint_timeout is reached.</li>' +
+            '<li><strong>requested:</strong> when max_wal_size is reached.</li>' +
+            '</ul>' +
+            'For more information see <a href="https://www.postgresql.org/docs/current/static/wal-configuration.html" target="_blank">WAL Configuration</a>.'
     },
     'postgres.autovacuum': {
-        info: 'PostgreSQL databases require periodic maintenance known as vacuuming. For many installations, it is sufficient to let vacuuming be performed by the autovacuum daemon.' +
-        'For more information see <a href="https://www.postgresql.org/docs/current/static/routine-vacuuming.html#AUTOVACUUM" target="_blank">The Autovacuum Daemon</a>.'
+        info: 'PostgreSQL databases require periodic maintenance known as vacuuming. For many installations, it is sufficient to let vacuuming be performed by the autovacuum daemon. ' +
+            'For more information see <a href="https://www.postgresql.org/docs/current/static/routine-vacuuming.html#AUTOVACUUM" target="_blank">The Autovacuum Daemon</a>.'
     },
     'postgres.standby_delta': {
         info: 'Streaming replication delta.<ul>' +
-        '<li><strong>sent_delta:</strong> replication delta sent to standby.</li>' +
-        '<li><strong>write_delta:</strong> replication delta written to disk by this standby.</li>' +
-        '<li><strong>flush_delta:</strong> replication delta flushed to disk by this standby server.</li>' +
-        '<li><strong>replay_delta:</strong> replication delta replayed into the database on this standby server.</li>' +
-        '</ul>' +
-        'For more information see <a href="https://www.postgresql.org/docs/current/static/warm-standby.html#SYNCHRONOUS-REPLICATION" target="_blank">Synchronous Replication</a>.'
+            '<li><strong>sent_delta:</strong> replication delta sent to standby.</li>' +
+            '<li><strong>write_delta:</strong> replication delta written to disk by this standby.</li>' +
+            '<li><strong>flush_delta:</strong> replication delta flushed to disk by this standby server.</li>' +
+            '<li><strong>replay_delta:</strong> replication delta replayed into the database on this standby server.</li>' +
+            '</ul>' +
+            'For more information see <a href="https://www.postgresql.org/docs/current/static/warm-standby.html#SYNCHRONOUS-REPLICATION" target="_blank">Synchronous Replication</a>.'
     },
     'postgres.replication_slot': {
         info: 'Replication slot files.<ul>' +
-        '<li><strong>wal_keeped:</strong> WAL files retained by each replication slots.</li>' +
-        '<li><strong>pg_replslot_files:</strong> files present in pg_replslot.</li>' +
-        '</ul>' +
-        'For more information see <a href="https://www.postgresql.org/docs/current/static/warm-standby.html#STREAMING-REPLICATION-SLOTS" target="_blank">Replication Slots</a>.'
+            '<li><strong>wal_keeped:</strong> WAL files retained by each replication slots.</li>' +
+            '<li><strong>pg_replslot_files:</strong> files present in pg_replslot.</li>' +
+            '</ul>' +
+            'For more information see <a href="https://www.postgresql.org/docs/current/static/warm-standby.html#STREAMING-REPLICATION-SLOTS" target="_blank">Replication Slots</a>.'
     },
 
 
@@ -1115,9 +1224,9 @@ netdataDashboard.context = {
 
     'apache.workers': {
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="busy"'
                     + ' data-append-options="percentage"'
                     + ' data-gauge-max-value="100"'
@@ -1176,9 +1285,9 @@ netdataDashboard.context = {
 
     'lighttpd.workers': {
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="busy"'
                     + ' data-append-options="percentage"'
                     + ' data-gauge-max-value="100"'
@@ -1232,7 +1341,7 @@ netdataDashboard.context = {
 
     'httpcheck.responsetime': {
         info: 'The <code>response time</code> describes the time passed between request and response. ' +
-        'Currently, the accuracy of the response time is low and should be used as reference only.'
+            'Currently, the accuracy of the response time is low and should be used as reference only.'
     },
 
     'httpcheck.responselength': {
@@ -1242,8 +1351,8 @@ netdataDashboard.context = {
     'httpcheck.status': {
         valueRange: "[0, 1]",
         info: 'This chart verifies the response of the webserver. Each status dimension will have a value of <code>1</code> if triggered. ' +
-        'Dimension <code>success</code> is <code>1</code> only if all constraints are satisfied.' +
-        'This chart is most useful for alarms or third-party apps.'
+            'Dimension <code>success</code> is <code>1</code> only if all constraints are satisfied. ' +
+            'This chart is most useful for alarms or third-party apps.'
     },
 
     // ------------------------------------------------------------------------
@@ -1267,9 +1376,9 @@ netdataDashboard.context = {
     'retroshare.peers': {
         info: 'Number of (connected) RetroShare friends.',
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="peers_connected"'
                     + ' data-append-options="friends"'
                     + ' data-chart-library="easypiechart"'
@@ -1306,9 +1415,9 @@ netdataDashboard.context = {
 
     'cgroup.cpu': {
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="CPU"'
                     + ' data-units="%"'
@@ -1325,9 +1434,9 @@ netdataDashboard.context = {
 
     'cgroup.mem_usage': {
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Memory"'
                     + ' data-units="MB"'
@@ -1344,9 +1453,9 @@ netdataDashboard.context = {
 
     'cgroup.throttle_io': {
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="read"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Read Disk I/O"'
@@ -1359,9 +1468,9 @@ netdataDashboard.context = {
                     + ' data-colors="' + NETDATA.colors[2] + '"'
                     + ' role="application"></div>';
             },
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="write"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Write Disk I/O"'
@@ -1499,9 +1608,9 @@ netdataDashboard.context = {
     'web_log.response_statuses': {
         info: 'Web server responses by type. <code>success</code> includes <b>1xx</b>, <b>2xx</b> and <b>304</b>, <code>error</code> includes <b>5xx</b>, <code>redirect</code> includes <b>3xx</b> except <b>304</b>, <code>bad</code> includes <b>4xx</b>, <code>other</code> are all the other responses.',
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="success"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Successful"'
@@ -1517,9 +1626,9 @@ netdataDashboard.context = {
                     + ' role="application"></div>';
             },
 
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="redirect"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Redirects"'
@@ -1535,9 +1644,9 @@ netdataDashboard.context = {
                     + ' role="application"></div>';
             },
 
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="bad"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Bad Requests"'
@@ -1553,9 +1662,9 @@ netdataDashboard.context = {
                     + ' role="application"></div>';
             },
 
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="error"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Server Errors"'
@@ -1575,20 +1684,20 @@ netdataDashboard.context = {
 
     'web_log.response_codes': {
         info: 'Web server responses by code family. ' +
-        'According to the standards <code>1xx</code> are informational responses, ' +
-        '<code>2xx</code> are successful responses, ' +
-        '<code>3xx</code> are redirects (although they include <b>304</b> which is used as "<b>not modified</b>"), ' +
-        '<code>4xx</code> are bad requests, ' +
-        '<code>5xx</code> are internal server errors, ' +
-        '<code>other</code> are non-standard responses, ' +
-        '<code>unmatched</code> counts the lines in the log file that are not matched by the plugin (<a href="https://github.com/firehol/netdata/issues/new?title=web_log%20reports%20unmatched%20lines&body=web_log%20plugin%20reports%20unmatched%20lines.%0A%0AThis%20is%20my%20log:%0A%0A%60%60%60txt%0A%0Aplease%20paste%20your%20web%20server%20log%20here%0A%0A%60%60%60" target="_blank">let us know</a> if you have any unmatched).'
+            'According to the standards <code>1xx</code> are informational responses, ' +
+            '<code>2xx</code> are successful responses, ' +
+            '<code>3xx</code> are redirects (although they include <b>304</b> which is used as "<b>not modified</b>"), ' +
+            '<code>4xx</code> are bad requests, ' +
+            '<code>5xx</code> are internal server errors, ' +
+            '<code>other</code> are non-standard responses, ' +
+            '<code>unmatched</code> counts the lines in the log file that are not matched by the plugin (<a href="https://github.com/netdata/netdata/issues/new?title=web_log%20reports%20unmatched%20lines&body=web_log%20plugin%20reports%20unmatched%20lines.%0A%0AThis%20is%20my%20log:%0A%0A%60%60%60txt%0A%0Aplease%20paste%20your%20web%20server%20log%20here%0A%0A%60%60%60" target="_blank">let us know</a> if you have any unmatched).'
     },
 
     'web_log.response_time': {
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="avg"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Average Response Time"'
@@ -1618,7 +1727,7 @@ netdataDashboard.context = {
     },
 
     'web_log.clients_all': {
-        info: 'Unique client IPs accessing the web server since the last restart of netdata. This plugin keeps in memory all the unique IPs that have accessed the web server. On very busy web servers (several millions of unique IPs) you may want to disable this chart (check <a href="https://github.com/firehol/netdata/blob/master/conf.d/python.d/web_log.conf" target="_blank"><code>/etc/netdata/python.d/web_log.conf</code></a>).'
+        info: 'Unique client IPs accessing the web server since the last restart of netdata. This plugin keeps in memory all the unique IPs that have accessed the web server. On very busy web servers (several millions of unique IPs) you may want to disable this chart (check <a href="https://github.com/netdata/netdata/blob/master/conf.d/python.d/web_log.conf" target="_blank"><code>/etc/netdata/python.d/web_log.conf</code></a>).'
     },
 
     // ------------------------------------------------------------------------
@@ -1626,15 +1735,15 @@ netdataDashboard.context = {
 
     'web_log.squid_response_statuses': {
         info: 'Squid responses by type. ' +
-        '<code>success</code> includes <b>1xx</b>, <b>2xx</b>, <b>000</b>, <b>304</b>, ' +
-        '<code>error</code> includes <b>5xx</b> and <b>6xx</b>, ' +
-        '<code>redirect</code> includes <b>3xx</b> except <b>304</b>, ' +
-        '<code>bad</code> includes <b>4xx</b>, ' +
-        '<code>other</code> are all the other responses.',
+            '<code>success</code> includes <b>1xx</b>, <b>2xx</b>, <b>000</b>, <b>304</b>, ' +
+            '<code>error</code> includes <b>5xx</b> and <b>6xx</b>, ' +
+            '<code>redirect</code> includes <b>3xx</b> except <b>304</b>, ' +
+            '<code>bad</code> includes <b>4xx</b>, ' +
+            '<code>other</code> are all the other responses.',
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="success"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Successful"'
@@ -1650,9 +1759,9 @@ netdataDashboard.context = {
                     + ' role="application"></div>';
             },
 
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="redirect"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Redirects"'
@@ -1668,9 +1777,9 @@ netdataDashboard.context = {
                     + ' role="application"></div>';
             },
 
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="bad"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Bad Requests"'
@@ -1686,9 +1795,9 @@ netdataDashboard.context = {
                     + ' role="application"></div>';
             },
 
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="error"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Server Errors"'
@@ -1708,22 +1817,22 @@ netdataDashboard.context = {
 
     'web_log.squid_response_codes': {
         info: 'Web server responses by code family. ' +
-        'According to HTTP standards <code>1xx</code> are informational responses, ' +
-        '<code>2xx</code> are successful responses, ' +
-        '<code>3xx</code> are redirects (although they include <b>304</b> which is used as "<b>not modified</b>"), ' +
-        '<code>4xx</code> are bad requests, ' +
-        '<code>5xx</code> are internal server errors. ' +
-        'Squid also defines <code>000</code> mostly for UDP requests, and ' +
-        '<code>6xx</code> for broken upstream servers sending wrong headers. ' +
-        'Finally, <code>other</code> are non-standard responses, and ' +
-        '<code>unmatched</code> counts the lines in the log file that are not matched by the plugin (<a href="https://github.com/firehol/netdata/issues/new?title=web_log%20reports%20unmatched%20lines&body=web_log%20plugin%20reports%20unmatched%20lines.%0A%0AThis%20is%20my%20log:%0A%0A%60%60%60txt%0A%0Aplease%20paste%20your%20web%20server%20log%20here%0A%0A%60%60%60" target="_blank">let us know</a> if you have any unmatched).'
+            'According to HTTP standards <code>1xx</code> are informational responses, ' +
+            '<code>2xx</code> are successful responses, ' +
+            '<code>3xx</code> are redirects (although they include <b>304</b> which is used as "<b>not modified</b>"), ' +
+            '<code>4xx</code> are bad requests, ' +
+            '<code>5xx</code> are internal server errors. ' +
+            'Squid also defines <code>000</code> mostly for UDP requests, and ' +
+            '<code>6xx</code> for broken upstream servers sending wrong headers. ' +
+            'Finally, <code>other</code> are non-standard responses, and ' +
+            '<code>unmatched</code> counts the lines in the log file that are not matched by the plugin (<a href="https://github.com/netdata/netdata/issues/new?title=web_log%20reports%20unmatched%20lines&body=web_log%20plugin%20reports%20unmatched%20lines.%0A%0AThis%20is%20my%20log:%0A%0A%60%60%60txt%0A%0Aplease%20paste%20your%20web%20server%20log%20here%0A%0A%60%60%60" target="_blank">let us know</a> if you have any unmatched).'
     },
 
     'web_log.squid_duration': {
         mainheads: [
-            function(os, id) {
+            function (os, id) {
                 void(os);
-                return  '<div data-netdata="' + id + '"'
+                return '<div data-netdata="' + id + '"'
                     + ' data-dimensions="avg"'
                     + ' data-chart-library="gauge"'
                     + ' data-title="Average Response Time"'
@@ -1749,60 +1858,60 @@ netdataDashboard.context = {
     },
 
     'web_log.squid_clients_all': {
-        info: 'Unique client IPs accessing squid since the last restart of netdata. This plugin keeps in memory all the unique IPs that have accessed the server. On very busy squid servers (several millions of unique IPs) you may want to disable this chart (check <a href="https://github.com/firehol/netdata/blob/master/conf.d/python.d/web_log.conf" target="_blank"><code>/etc/netdata/python.d/web_log.conf</code></a>).'
+        info: 'Unique client IPs accessing squid since the last restart of netdata. This plugin keeps in memory all the unique IPs that have accessed the server. On very busy squid servers (several millions of unique IPs) you may want to disable this chart (check <a href="https://github.com/netdata/netdata/blob/master/conf.d/python.d/web_log.conf" target="_blank"><code>/etc/netdata/python.d/web_log.conf</code></a>).'
     },
 
     'web_log.squid_transport_methods': {
         info: 'Break down per delivery method: <code>TCP</code> are requests on the HTTP port (usually 3128), ' +
-        '<code>UDP</code> are requests on the ICP port (usually 3130), or HTCP port (usually 4128). ' +
-        'If ICP logging was disabled using the log_icp_queries option, no ICP replies will be logged. ' +
-        '<code>NONE</code> are used to state that squid delivered an unusual response or no response at all. ' +
-        'Seen with cachemgr requests and errors, usually when the transaction fails before being classified into one of the above outcomes. ' +
-        'Also seen with responses to <code>CONNECT</code> requests.'
+            '<code>UDP</code> are requests on the ICP port (usually 3130), or HTCP port (usually 4128). ' +
+            'If ICP logging was disabled using the log_icp_queries option, no ICP replies will be logged. ' +
+            '<code>NONE</code> are used to state that squid delivered an unusual response or no response at all. ' +
+            'Seen with cachemgr requests and errors, usually when the transaction fails before being classified into one of the above outcomes. ' +
+            'Also seen with responses to <code>CONNECT</code> requests.'
     },
 
     'web_log.squid_code': {
         info: 'These are combined squid result status codes. A break down per component is given in the following charts. ' +
-        'Check the <a href="http://wiki.squid-cache.org/SquidFaq/SquidLogs">squid documentation about them</a>.'
+            'Check the <a href="http://wiki.squid-cache.org/SquidFaq/SquidLogs">squid documentation about them</a>.'
     },
 
     'web_log.squid_handling_opts': {
         info: 'These tags are optional and describe why the particular handling was performed or where the request came from. ' +
-        '<code>CLIENT</code> means that the client request placed limits affecting the response. Usually seen with client issued a <b>no-cache</b>, or analogous cache control command along with the request. Thus, the cache has to validate the object.' +
-        '<code>IMS</code> states that the client sent a revalidation (conditional) request. ' +
-        '<code>ASYNC</code>, is used when the request was generated internally by Squid. Usually this is background fetches for cache information exchanges, background revalidation from stale-while-revalidate cache controls, or ESI sub-objects being loaded. ' +
-        '<code>SWAPFAIL</code> is assigned when the object was believed to be in the cache, but could not be accessed. A new copy was requested from the server. ' +
-        '<code>REFRESH</code> when a revalidation (conditional) request was sent to the server. ' +
-        '<code>SHARED</code> when this request was combined with an existing transaction by collapsed forwarding. NOTE: the existing request is not marked as SHARED. ' +
-        '<code>REPLY</code> when particular handling was requested in the HTTP reply from server or peer. Usually seen on DENIED due to http_reply_access ACLs preventing delivery of servers response object to the client.'
+            '<code>CLIENT</code> means that the client request placed limits affecting the response. Usually seen with client issued a <b>no-cache</b>, or analogous cache control command along with the request. Thus, the cache has to validate the object.' +
+            '<code>IMS</code> states that the client sent a revalidation (conditional) request. ' +
+            '<code>ASYNC</code>, is used when the request was generated internally by Squid. Usually this is background fetches for cache information exchanges, background revalidation from stale-while-revalidate cache controls, or ESI sub-objects being loaded. ' +
+            '<code>SWAPFAIL</code> is assigned when the object was believed to be in the cache, but could not be accessed. A new copy was requested from the server. ' +
+            '<code>REFRESH</code> when a revalidation (conditional) request was sent to the server. ' +
+            '<code>SHARED</code> when this request was combined with an existing transaction by collapsed forwarding. NOTE: the existing request is not marked as SHARED. ' +
+            '<code>REPLY</code> when particular handling was requested in the HTTP reply from server or peer. Usually seen on DENIED due to http_reply_access ACLs preventing delivery of servers response object to the client.'
     },
 
     'web_log.squid_object_types': {
         info: 'These tags are optional and describe what type of object was produced. ' +
-        '<code>NEGATIVE</code> is only seen on HIT responses, indicating the response was a cached error response. e.g. <b>404 not found</b>. ' +
-        '<code>STALE</code> means the object was cached and served stale. This is usually caused by stale-while-revalidate or stale-if-error cache controls. ' +
-        '<code>OFFLINE</code> when the requested object was retrieved from the cache during offline_mode. The offline mode never validates any object. ' +
-        '<code>INVALID</code> when an invalid request was received. An error response was delivered indicating what the problem was. ' +
-        '<code>FAIL</code> is only seen on <code>REFRESH</code> to indicate the revalidation request failed. The response object may be the server provided network error or the stale object which was being revalidated depending on stale-if-error cache control. ' +
-        '<code>MODIFIED</code> is only seen on <code>REFRESH</code> responses to indicate revalidation produced a new modified object. ' +
-        '<code>UNMODIFIED</code> is only seen on <code>REFRESH</code> responses to indicate revalidation produced a <b>304</b> (Not Modified) status, which was relayed to the client. ' +
-        '<code>REDIRECT</code> when squid generated an HTTP redirect response to this request.'
+            '<code>NEGATIVE</code> is only seen on HIT responses, indicating the response was a cached error response. e.g. <b>404 not found</b>. ' +
+            '<code>STALE</code> means the object was cached and served stale. This is usually caused by stale-while-revalidate or stale-if-error cache controls. ' +
+            '<code>OFFLINE</code> when the requested object was retrieved from the cache during offline_mode. The offline mode never validates any object. ' +
+            '<code>INVALID</code> when an invalid request was received. An error response was delivered indicating what the problem was. ' +
+            '<code>FAIL</code> is only seen on <code>REFRESH</code> to indicate the revalidation request failed. The response object may be the server provided network error or the stale object which was being revalidated depending on stale-if-error cache control. ' +
+            '<code>MODIFIED</code> is only seen on <code>REFRESH</code> responses to indicate revalidation produced a new modified object. ' +
+            '<code>UNMODIFIED</code> is only seen on <code>REFRESH</code> responses to indicate revalidation produced a <b>304</b> (Not Modified) status, which was relayed to the client. ' +
+            '<code>REDIRECT</code> when squid generated an HTTP redirect response to this request.'
     },
 
     'web_log.squid_cache_events': {
         info: 'These tags are optional and describe whether the response was loaded from cache, network, or otherwise. ' +
-        '<code>HIT</code> when the response object delivered was the local cache object. ' +
-        '<code>MEM</code> when the response object came from memory cache, avoiding disk accesses. Only seen on HIT responses. ' +
-        '<code>MISS</code> when the response object delivered was the network response object. ' +
-        '<code>DENIED</code> when the request was denied by access controls. ' +
-        '<code>NOFETCH</code> an ICP specific type, indicating service is alive, but not to be used for this request (sent during "-Y" startup, or during frequent failures, a cache in hit only mode will return either UDP_HIT or UDP_MISS_NOFETCH. Neighbours will thus only fetch hits). ' +
-        '<code>TUNNEL</code> when a binary tunnel was established for this transaction.'
+            '<code>HIT</code> when the response object delivered was the local cache object. ' +
+            '<code>MEM</code> when the response object came from memory cache, avoiding disk accesses. Only seen on HIT responses. ' +
+            '<code>MISS</code> when the response object delivered was the network response object. ' +
+            '<code>DENIED</code> when the request was denied by access controls. ' +
+            '<code>NOFETCH</code> an ICP specific type, indicating service is alive, but not to be used for this request (sent during "-Y" startup, or during frequent failures, a cache in hit only mode will return either UDP_HIT or UDP_MISS_NOFETCH. Neighbours will thus only fetch hits). ' +
+            '<code>TUNNEL</code> when a binary tunnel was established for this transaction.'
     },
 
     'web_log.squid_transport_errors': {
         info: 'These tags are optional and describe some error conditions which occured during response delivery (if any). ' +
-        '<code>ABORTED</code> when the response was not completed due to the connection being aborted (usually by the client). ' +
-        '<code>TIMEOUT</code>, when the response was not completed due to a connection timeout.'
+            '<code>ABORTED</code> when the response was not completed due to the connection being aborted (usually by the client). ' +
+            '<code>TIMEOUT</code>, when the response was not completed due to a connection timeout.'
     },
 
     // ------------------------------------------------------------------------
@@ -1819,7 +1928,7 @@ netdataDashboard.context = {
         commonMax: true,
         valueRange: "[0, 100]",
         info: 'The <code>Autonomy</code> is the percentage of how autonomous the installation is. An autonomy of 100 % means that the installation is producing more energy than it is needed. ' +
-        'The <code>Self consumption</code> indicates the ratio between the current power generated and the current load. When it reaches 100 %, the <code>Autonomy</code> declines, since the solar panels can not produce enough energy and need support from the grid.'
+            'The <code>Self consumption</code> indicates the ratio between the current power generated and the current load. When it reaches 100 %, the <code>Autonomy</code> declines, since the solar panels can not produce enough energy and need support from the grid.'
     },
 
     'fronius.energy.today': {
@@ -1842,14 +1951,14 @@ netdataDashboard.context = {
 
     'portcheck.latency': {
         info: 'The <code>latency</code> describes the time spent connecting to a TCP port. No data is sent or received. ' +
-        'Currently, the accuracy of the latency is low and should be used as reference only.'
+            'Currently, the accuracy of the latency is low and should be used as reference only.'
     },
 
     'portcheck.status': {
         valueRange: "[0, 1]",
         info: 'The <code>status</code> chart verifies the availability of the service. ' +
-        'Each status dimension will have a value of <code>1</code> if triggered. Dimension <code>success</code> is <code>1</code> only if connection could be established.' +
-        'This chart is most useful for alarms and third-party apps.'
+            'Each status dimension will have a value of <code>1</code> if triggered. Dimension <code>success</code> is <code>1</code> only if connection could be established. ' +
+            'This chart is most useful for alarms and third-party apps.'
     },
 
     // ------------------------------------------------------------------------
@@ -1880,8 +1989,15 @@ netdataDashboard.context = {
     },
 
     'chrony.residualfreq': {
-        info: 'This shows the <code>residual frequency</code> for the currently selected reference source. It reflects any difference between what the measurements from the reference source indicate the frequency should be and the frequency currently being used.' +
-        'The reason this is not always zero is that a smoothing procedure is applied to the frequency. Each time a measurement from the reference source is obtained and a new residual frequency computed, the estimated accuracy of this residual is compared with the estimated accuracy (see <code>skew</code>) of the existing frequency value. A weighted average is computed for the new frequency, with weights depending on these accuracies. If the measurements from the reference source follow a consistent trend, the residual will be driven to zero over time.',
+        info: 'This shows the <code>residual frequency</code> for the currently selected reference source. ' +
+            'It reflects any difference between what the measurements from the reference source indicate the ' +
+            'frequency should be and the frequency currently being used. The reason this is not always zero is ' +
+            'that a smoothing procedure is applied to the frequency. Each time a measurement from the reference ' +
+            'source is obtained and a new residual frequency computed, the estimated accuracy of this residual ' +
+            'is compared with the estimated accuracy (see <code>skew</code>) of the existing frequency value. ' +
+            'A weighted average is computed for the new frequency, with weights depending on these accuracies. ' +
+            'If the measurements from the reference source follow a consistent trend, the residual will be ' +
+            'driven to zero over time.',
         height: 0.5,
         colors: NETDATA.colors[3]
     },
@@ -1905,7 +2021,8 @@ netdataDashboard.context = {
     },
 
     'btrfs.disk': {
-        info: 'Physical disk usage of BTRFS. The disk space reported here is the raw physical disk space assigned to the BTRFS volume (i.e. <b>before any RAID levels</b>). BTRFS uses a two-stage allocator, first allocating large regions of disk space for one type of block (data, metadata, or system), and then using a regular block allocator inside those regions. <code>unallocated</code> is the physical disk space that is not allocated yet and is available to become data, metdata or system on demand. When <code>unallocated</code> is zero, all available disk space has been allocated to a specific function. Healthy volumes should ideally have at least five percent of their total space <code>unallocated</code>. You can keep your volume healthy by running the <code>btrfs balance</code> command on it regularly (check <code>man btrfs-balance</code> for more info).'
+        info: 'Physical disk usage of BTRFS. The disk space reported here is the raw physical disk space assigned to the BTRFS volume (i.e. <b>before any RAID levels</b>). BTRFS uses a two-stage allocator, first allocating large regions of disk space for one type of block (data, metadata, or system), and then using a regular block allocator inside those regions. <code>unallocated</code> is the physical disk space that is not allocated yet and is available to become data, metdata or system on demand. When <code>unallocated</code> is zero, all available disk space has been allocated to a specific function. Healthy volumes should ideally have at least five percent of their total space <code>unallocated</code>. You can keep your volume healthy by running the <code>btrfs balance</code> command on it regularly (check <code>man btrfs-balance</code> for more info).  Note that some of the spac elisted as <code>unallocated</code> may not actually be usable if the volume uses devices of different sizes.',
+        colors: [NETDATA.colors[12]]
     },
 
     'btrfs.data': {
@@ -1917,7 +2034,7 @@ netdataDashboard.context = {
     },
 
     'btrfs.system': {
-        info: 'Logical disk usage for BTRFS system. System chunks store information aobut the allocation of other chunks. The disk space reported here is the usable allocation (i.e. after any striping or replication). The values reported here should be relatively small compared to Data and Metadata, and will scale with the volume size and overall space usage.'
+        info: 'Logical disk usage for BTRFS system. System chunks store information about the allocation of other chunks. The disk space reported here is the usable allocation (i.e. after any striping or replication). The values reported here should be relatively small compared to Data and Metadata, and will scale with the volume size and overall space usage.'
     },
 
     // ------------------------------------------------------------------------
@@ -2064,6 +2181,140 @@ netdataDashboard.context = {
 
     'ntpd.peer_precision': {
         height: 0.2
+    },
+
+    'spigotmc.tps': {
+        info: 'The running 1, 5, and 15 minute average number of server ticks per second.  An idealized server will show 20.0 for all values, but in practice this almost never happens.  Typical servers should show approximately 19.98-20.0 here.  Lower values indicate progressively more server-side lag (and thus that you need better hardware for your server or a lower user limit).  For every 0.05 ticks below 20, redstone clocks will lag behind by approximately 0.25%.  Values below approximately 19.50 may interfere with complex free-running redstone circuits and will noticeably slow down growth.'
+    },
+
+    'spigotmc.users': {
+        info: 'THe number of currently connect users on the monitored Spigot server.'
+    },
+
+    'unbound.queries': {
+        info: 'Shows the number of queries being processed of each type. Note that <code>Recursive</code> queries are also accounted as cache misses.'
+    },
+
+    'unbound.reqlist': {
+        info: 'Shows various stats about Unbound\'s internal request list.'
+    },
+
+    'unbound.recursion': {
+        info: 'Average and median time to complete recursive name resolution.'
+    },
+
+    'unbound.cache': {
+        info: 'The number of items in each of the various caches.'
+    },
+
+    'unbound.threads.queries': {
+        height: 0.2
+    },
+
+    'unbound.threads.reqlist': {
+        height: 0.2
+    },
+
+    'unbound.threads.recursion': {
+        height: 0.2
+    },
+
+    'boinc.tasks': {
+        info: 'The total number of tasks and the number of active tasks.  Active tasks are those which are either currently being processed, or are partialy processed but suspended.'
+    },
+
+    'boinc.states': {
+        info: 'Counts of tasks in each task state.  The normal sequence of states is <code>New</code>, <code>Downloading</code>, <code>Ready to Run</code>, <code>Uploading</code>, <code>Uploaded</code>.  Tasks which are marked <code>Ready to Run</code> may be actively running, or may be waiting to be scheduled.  <code>Compute Errors</code> are tasks which failed for some reason during execution.  <code>Aborted</code> tasks were manually cancelled, and will not be processed.  <code>Failed Uploads</code> are otherwise finished tasks which failed to upload to the server, and usually indicate networking issues.'
+    },
+
+    'boinc.sched': {
+        info: 'Counts of active tasks in each scheduling state.  <code>Scheduled</code> tasks are the ones which will run if the system is permitted to process tasks.  <code>Preempted</code> tasks are on standby, and will run if a <code>Scheduled</code> task stops running for some reason.  <code>Uninitialized</code> tasks should never be present, and indicate tha the scheduler has not tried to schedule them yet.'
+    },
+
+    'boinc.process': {
+        info: 'Counts of active tasks in each process state.  <code>Executing</code> tasks are running right now.  <code>Suspended</code> tasks have an associated process, but are not currently running (either because the system isn\'t processing any tasks right now, or because they have been preempted by higher priority tasks).  <code>Quit</code> tasks are exiting gracefully.  <code>Aborted</code> tasks exceeded some resource limit, and are being shut down.  <code>Copy Pending</code> tasks are waiting on a background file transfer to finish.  <code>Uninitialized</code> tasks do not have an associated process yet.'
+    },
+
+    'w1sensor.temp': {
+        info: 'Temperature derived from 1-Wire temperature sensors.'
+    },
+
+    'logind.sessions': {
+        info: 'Shows the number of active sessions of each type tracked by logind.'
+    },
+
+    'logind.users': {
+        info: 'Shows the number of active users of each type tracked by logind.'
+    },
+
+    'logind.seats': {
+        info: 'Shows the number of active seats tracked by logind.  Each seat corresponds to a combination of a display device and input device providing a physical presence for the system.'
+    },
+
+    // ------------------------------------------------------------------------
+    // ProxySQL
+
+    'proxysql.pool_status': {
+        info: 'The status of the backend servers. ' +
+        '<code>1=ONLINE</code> backend server is fully operational, ' +
+        '<code>2=SHUNNED</code> backend sever is temporarily taken out of use because of either too many connection errors in a time that was too short, or replication lag exceeded the allowed threshold, ' +
+        '<code>3=OFFLINE_SOFT</code> when a server is put into OFFLINE_SOFT mode, new incoming connections aren\'t accepted anymore, while the existing connections are kept until they became inactive. In other words, connections are kept in use until the current transaction is completed. This allows to gracefully detach a backend, ' +
+        '<code>4=OFFLINE_HARD</code> when a server is put into OFFLINE_HARD mode, the existing connections are dropped, while new incoming connections aren\'t accepted either. This is equivalent to deleting the server from a hostgroup, or temporarily taking it out of the hostgroup for maintenance work, ' +
+        '<code>-1</code> Unknown status.'
+    },
+
+    'proxysql.pool_net': {
+        info: 'The amount of data sent to/received from the backend ' +
+        '(This does not include metadata (packets\' headers, OK/ERR packets, fields\' description, etc).'
+    },
+
+    'proxysql.pool_overall_net': {
+        info: 'The amount of data sent to/received from the all backends ' +
+        '(This does not include metadata (packets\' headers, OK/ERR packets, fields\' description, etc).'
+    },
+
+    'proxysql.questions': {
+        info: '<code>questions</code> total number of queries sent from frontends, ' +
+        '<code>slow_queries</code> number of queries that ran for longer than the threshold in milliseconds defined in global variable <code>mysql-long_query_time</code>. '
+    },
+
+    'proxysql.connections': {
+        info: '<code>aborted</code> number of frontend connections aborted due to invalid credential or max_connections reached, ' +
+        '<code>connected</code> number of frontend connections currently connected, ' +
+        '<code>created</code> number of frontend connections created, ' +
+        '<code>non_idle</code> number of frontend connections that are not currently idle. '
+    },
+
+    'proxysql.pool_latency': {
+        info: 'The currently ping time in microseconds, as reported from Monitor.'
+    },
+
+    'proxysql.queries': {
+        info: 'The number of queries routed towards this particular backend server.'
+    },
+
+    'proxysql.pool_used_connections': {
+        info: 'The number of connections are currently used by ProxySQL for sending queries to the backend server.'
+    },
+
+    'proxysql.pool_free_connections': {
+        info: 'The number of connections are currently free. They are kept open in order to minimize the time cost of sending a query to the backend server.'
+    },
+
+    'proxysql.pool_ok_connections': {
+        info: 'The number of connections were established successfully.'
+    },
+
+    'proxysql.pool_error_connections': {
+        info: 'The number of connections weren\'t established successfully.'
+    },
+
+    'proxysql.commands_count': {
+        info: 'The total number of commands of that type executed'
+    },
+
+    'proxysql.commands_duration': {
+        info: 'The total time spent executing commands of that type, in ms'
     }
 
     // ------------------------------------------------------------------------
diff --git a/web/dashboard_info_custom_example.js b/web/gui/dashboard_info_custom_example.js
index f9e255d77..51ce0be22 100644
--- a/web/dashboard_info_custom_example.js
+++ b/web/gui/dashboard_info_custom_example.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
 /*
  * Custom netdata information file
  * -------------------------------
diff --git a/web/favicon.ico b/web/gui/favicon.ico
index 821f7c402..821f7c402 100644
--- a/web/favicon.ico
+++ b/web/gui/favicon.ico
diff --git a/web/goto-host-from-alarm.html b/web/gui/goto-host-from-alarm.html
index 40592134b..5eb66b5d0 100644
--- a/web/goto-host-from-alarm.html
+++ b/web/gui/goto-host-from-alarm.html
@@ -1,4 +1,5 @@
 <!DOCTYPE html>
+<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
 <html lang="en">
 <head>
     <title>Goto a host you know...</title>
@@ -21,6 +22,40 @@
 <script type="text/javascript" src="dashboard.js?v20170724-7"></script>
 
 <script>
+function escapeUserInputHTML(s) {
+    return s.toString()
+        .replace(/&/g, '&amp;')
+        .replace(/</g, '&lt;')
+        .replace(/>/g, '&gt;')
+        .replace(/"/g, '&quot;')
+        .replace(/#/g, '&#35;')
+        .replace(/'/g, '&#39;')
+        .replace(/\(/g,'&#40;')
+        .replace(/\)/g,'&#41;')
+        .replace(/\//g,'&#47;');
+}
+
+// if string.startsWith is not defined, define it
+if(typeof String.prototype.startsWith !== 'function') {
+    String.prototype.startsWith = function(s) {
+        if(s.length > this.length) return false;
+        return this.slice(s.length) === s;
+    };
+}
+
+function verifyURL(s) {
+    if(typeof(s) === 'string' && (s.startsWith('http://') || s.startsWith('https://')))
+        return s
+            .replace(/'/g, '%22')
+            .replace(/"/g, '%27')
+            .replace(/\)/g, '%28')
+            .replace(/\(/g, '%29');
+
+    console.log('invalid URL detected:');
+    console.log(s);
+    return 'javascript:alert("invalid url");';
+}
+
 var urlOptions = {
     host: null,
     chart: null,
@@ -86,7 +121,7 @@ function gotoServerValidateUrl(id, guid, url) {
     var finalURL = netdataURL(url);
 
     setTimeout(function() {
-        document.getElementById('gotoServerList').innerHTML += '<tr><td style="padding-left: 20px;"><a href="' + finalURL + '" target="_blank">' + url + '</a></td><td style="padding-left: 30px;"><code id="' + guid + '-' + id + '-status">checking...</code></td></tr>';
+        document.getElementById('gotoServerList').innerHTML += '<tr><td style="padding-left: 20px;"><a href="' + verifyURL(finalURL) + '" target="_blank">' + escapeUserInputHTML(url) + '</a></td><td style="padding-left: 30px;"><code id="' + guid + '-' + id + '-status">checking...</code></td></tr>';
 
         NETDATA.registry.hello(url, function(data) {
             if(typeof data !== 'undefined' && data !== null && typeof data.machine_guid === 'string' && data.machine_guid === guid) {
@@ -99,11 +134,11 @@ function gotoServerValidateUrl(id, guid, url) {
                     if(gotoServerMiddleClick) {
                         window.open(finalURL);
                         gotoServerMiddleClick = false;
-                        document.getElementById('gotoServerResponse').innerHTML = '<b>Opening new window to ' + NETDATA.registry.machines[guid].name + '<br/><a href="' + finalURL + '">' + url + '</a></b><br/>(check your pop-up blocker if it fails)';
+                        document.getElementById('gotoServerResponse').innerHTML = '<b>Opening new window to ' + NETDATA.registry.machines[guid].name + '<br/><a href="' + verifyURL(finalURL) + '">' + escapeUserInputHTML(url) + '</a></b><br/>(check your pop-up blocker if it fails)';
                     }
                     else {
-                        document.getElementById('gotoServerResponse').innerHTML += 'found it! It is at:<br/><small>' + url + '</small>';
-                        document.location = finalURL;
+                        document.getElementById('gotoServerResponse').innerHTML += 'found it! It is at:<br/><small>' + escapeUserInputHTML(url) + '</small>';
+                        document.location = verifyURL(finalURL);
                     }
                 }
             }
@@ -119,7 +154,7 @@ function gotoServerValidateUrl(id, guid, url) {
 
                     if(thisIsHttps === true && urlsInHttp > 0) {
                         document.getElementById('gotoServerResponse').innerHTML += '<br/>redirecting myself to HTTP to allow checking';
-                        document.location = document.location.toString().replace('https://', 'http://');
+                        document.location = verifyURL(document.location.toString().replace('https://', 'http://'));
                     }
                 }
             }
@@ -184,13 +219,13 @@ var netdataRegistryCallback = function(machines_array) {
         }
     }
 
-    document.getElementById('bodylog').innerHTML = "Sorry... your account is not linked to a netdata server named: <b>" + urlOptions.host + '</b>';
+    document.getElementById('bodylog').innerHTML = "Sorry... your account is not linked to a netdata server named: <b>" + escapeUserInputHTML(urlOptions.host) + '</b>';
 };
 
 netdataQueryParse();
 </script>
 <body>
-<div class="container" id="">
+<div class="container">
     <div id="bodylog" style="padding-top: 8vmax; font-size: 2.0vmax;">
         <span id="message">Please wait...</span>
 
diff --git a/web/images/alert-128-orange.png b/web/gui/images/alert-128-orange.png
index c6182bfad..c6182bfad 100644
--- a/web/images/alert-128-orange.png
+++ b/web/gui/images/alert-128-orange.png
diff --git a/web/images/alert-128-red.png b/web/gui/images/alert-128-red.png
index 90b9c73e6..90b9c73e6 100644
--- a/web/images/alert-128-red.png
+++ b/web/gui/images/alert-128-red.png
diff --git a/web/images/alert-multi-size-orange.ico b/web/gui/images/alert-multi-size-orange.ico
index edca43871..edca43871 100644
--- a/web/images/alert-multi-size-orange.ico
+++ b/web/gui/images/alert-multi-size-orange.ico
diff --git a/web/images/alert-multi-size-red.ico b/web/gui/images/alert-multi-size-red.ico
index 8f7cbd069..8f7cbd069 100644
--- a/web/images/alert-multi-size-red.ico
+++ b/web/gui/images/alert-multi-size-red.ico
diff --git a/web/images/animated.gif b/web/gui/images/animated.gif
index 0e94a20ba..0e94a20ba 100644
--- a/web/images/animated.gif
+++ b/web/gui/images/animated.gif
diff --git a/web/images/check-mark-2-128-green.png b/web/gui/images/check-mark-2-128-green.png
index e04ddca12..e04ddca12 100644
--- a/web/images/check-mark-2-128-green.png
+++ b/web/gui/images/check-mark-2-128-green.png
diff --git a/web/images/check-mark-2-multi-size-green.ico b/web/gui/images/check-mark-2-multi-size-green.ico
index 2fc414113..2fc414113 100644
--- a/web/images/check-mark-2-multi-size-green.ico
+++ b/web/gui/images/check-mark-2-multi-size-green.ico
diff --git a/web/gui/images/netdata.svg b/web/gui/images/netdata.svg
new file mode 100644
index 000000000..f8ddbda19
--- /dev/null
+++ b/web/gui/images/netdata.svg
@@ -0,0 +1,18 @@
+<?xml version="1.0" standalone="no"?>
+<!-- SPDX-License-Identifier: CC0-1.0 -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"  "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
+<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
+ width="16.000000pt" height="16.000000pt" viewBox="0 0 16.000000 16.000000"
+ preserveAspectRatio="xMidYMid meet">
+ <metadata>
+  Created by potrace 1.15, written by Peter Selinger 2001-2017
+ </metadata>
+ <g transform="translate(0.000000,16.000000) scale(0.003125,-0.003125)" fill="#000000" stroke="none">
+  <path d="M3643 5008 c-235 -199 -1100 -956 -1108 -968 -4 -6 103 -10 293 -10 165 0 314 -3 331 -6 41 -8 40 -23 -4 -194 -95 -361 -208 -619 -396 -899 -425 -633 -1052 -1047 -1776 -1172 -159 -27 -444 -36 -647 -19 -185 15 -206 11 -206 -30 0 -24 7 -33 39 -50 80 -40 389 -115 646 -155 139 -22 612 -32 781 -16 910 85 1765 550 2281 1239 227 303 365 582 479 971 26 88 74 299 74 327 0 2 127 4 283 4 l282 0 -45 43 c-25 23 -167 148 -315 277 -149 129 -355 309 -460 400 -298 261 -404 350 -414 350 -5 0 -58 -42 -118 -92z"/>
+  <path d="M4542 3770 c-74 -276 -162 -509 -266 -705 -73 -137 -190 -325 -270 -430 l-66 -88 0 -1269 0 -1268 320 0 320 0 -1 1773 c-1 974 -4 1840 -8 1922 l-6 150 -23 -85z"/>
+  <path d="M3555 2148 c-96 -82 -310 -238 -442 -323 l-123 -78 0 -868 0 -869 320 0 320 0 0 1095 c0 602 -3 1095 -7 1095 -5 0 -35 -23 -68 -52z"/>
+  <path d="M2599 1566 c-85 -36 -270 -95 -419 -136 l-135 -37 -3 -692 -2 -691 310 0 310 0 0 790 c0 435 -1 790 -2 790 -2 -1 -28 -11 -59 -24z"/>
+  <path d="M127 1403 c-4 -54 -7 -389 -7 -745 l0 -648 320 0 320 0 0 669 0 669 -117 21 c-127 24 -342 78 -437 111 -33 11 -62 20 -66 20 -4 0 -10 -44 -13 -97z"/>
+  <path d="M1635 1330 c-27 -5 -122 -9 -211 -9 -88 -1 -202 -4 -252 -7 l-92 -7 0 -648 0 -649 315 0 315 0 0 619 c0 577 -4 713 -19 710 -3 -1 -28 -5 -56 -9z"/>
+ </g>
+</svg>
diff --git a/web/images/post.png b/web/gui/images/post.png
index 6bad54742..6bad54742 100644
--- a/web/images/post.png
+++ b/web/gui/images/post.png
diff --git a/web/images/seo-performance-114.png b/web/gui/images/seo-performance-114.png
index 3f3862b3b..3f3862b3b 100644
--- a/web/images/seo-performance-114.png
+++ b/web/gui/images/seo-performance-114.png
diff --git a/web/images/seo-performance-128.png b/web/gui/images/seo-performance-128.png
index 2a212a475..2a212a475 100644
--- a/web/images/seo-performance-128.png
+++ b/web/gui/images/seo-performance-128.png
diff --git a/web/images/seo-performance-16.png b/web/gui/images/seo-performance-16.png
index 6d7f075ec..6d7f075ec 100644
--- a/web/images/seo-performance-16.png
+++ b/web/gui/images/seo-performance-16.png
diff --git a/web/images/seo-performance-24.png b/web/gui/images/seo-performance-24.png
index 32d077ef1..32d077ef1 100644
--- a/web/images/seo-performance-24.png
+++ b/web/gui/images/seo-performance-24.png
diff --git a/web/images/seo-performance-256.png b/web/gui/images/seo-performance-256.png
index 07abfa01c..07abfa01c 100644
--- a/web/images/seo-performance-256.png
+++ b/web/gui/images/seo-performance-256.png
diff --git a/web/images/seo-performance-32.png b/web/gui/images/seo-performance-32.png
index a39543cfb..a39543cfb 100644
--- a/web/images/seo-performance-32.png
+++ b/web/gui/images/seo-performance-32.png
diff --git a/web/images/seo-performance-48.png b/web/gui/images/seo-performance-48.png
index 6dab89e92..6dab89e92 100644
--- a/web/images/seo-performance-48.png
+++ b/web/gui/images/seo-performance-48.png
diff --git a/web/images/seo-performance-512.png b/web/gui/images/seo-performance-512.png
index 1f8c16410..1f8c16410 100644
--- a/web/images/seo-performance-512.png
+++ b/web/gui/images/seo-performance-512.png
diff --git a/web/images/seo-performance-64.png b/web/gui/images/seo-performance-64.png
index e79f3b35b..e79f3b35b 100644
--- a/web/images/seo-performance-64.png
+++ b/web/gui/images/seo-performance-64.png
diff --git a/web/images/seo-performance-72.png b/web/gui/images/seo-performance-72.png
index a4c9efb30..a4c9efb30 100644
--- a/web/images/seo-performance-72.png
+++ b/web/gui/images/seo-performance-72.png
diff --git a/web/images/seo-performance-multi-size.icns b/web/gui/images/seo-performance-multi-size.icns
index 2e1a884fb..2e1a884fb 100644
--- a/web/images/seo-performance-multi-size.icns
+++ b/web/gui/images/seo-performance-multi-size.icns
diff --git a/web/images/seo-performance-multi-size.ico b/web/gui/images/seo-performance-multi-size.ico
index 821f7c402..821f7c402 100644
--- a/web/images/seo-performance-multi-size.ico
+++ b/web/gui/images/seo-performance-multi-size.ico
diff --git a/web/index.html b/web/gui/index.html
index ea146fc65..0a01b1df9 100644
--- a/web/index.html
+++ b/web/gui/index.html
@@ -1,4 +1,5 @@
 <!DOCTYPE html>
+<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
 <html lang="en">
 <head>
     <title>netdata dashboard</title>
@@ -29,6 +30,8 @@
 
     <link rel="icon" type="image/png" sizes="32x32" href="data:image/png;base64,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">
 
+    <link rel="mask-icon" href="images/netdata.svg" color="red" />
+
     <meta property="og:locale"             content="en_US" />
     <meta property="og:url"                content="https://my-netdata.io" />
     <meta property="og:type"               content="website" />
@@ -569,9 +572,40 @@
         // enable registry updates
         var netdataRegistry = true;
 
+        // forward definition only - not used here
+        var netdataServer = undefined;
+        var netdataServerStatic = undefined;
+        var netdataCheckXSS = undefined;
+
         // control the welcome modal and analytics
         var this_is_demo = null;
 
+        function escapeUserInputHTML(s) {
+            return s.toString()
+                .replace(/&/g, '&amp;')
+                .replace(/</g, '&lt;')
+                .replace(/>/g, '&gt;')
+                .replace(/"/g, '&quot;')
+                .replace(/#/g, '&#35;')
+                .replace(/'/g, '&#39;')
+                .replace(/\(/g,'&#40;')
+                .replace(/\)/g,'&#41;')
+                .replace(/\//g,'&#47;');
+        }
+
+        function verifyURL(s) {
+            if(typeof(s) === 'string' && (s.startsWith('http://') || s.startsWith('https://')))
+                return s
+                    .replace(/'/g, '%22')
+                    .replace(/"/g, '%27')
+                    .replace(/\)/g, '%28')
+                    .replace(/\(/g, '%29');
+
+            console.log('invalid URL detected:');
+            console.log(s);
+            return 'javascript:alert("invalid url");';
+        }
+
         // --------------------------------------------------------------------
         // urlOptions
 
@@ -690,7 +724,7 @@
                     urlOptions.highlight = true;
                 }
                 else
-                    urlOptions.highlight = false
+                    urlOptions.highlight = false;
 
                 switch(urlOptions.mode) {
                     case 'print':
@@ -1038,9 +1072,9 @@
 
             if(!found) {
                 if(machines)
-                    el += '<li><a href="https://github.com/firehol/netdata/wiki/mynetdata-menu-item" style="color: #666;" target="_blank">your netdata server list is empty...</a></li>';
+                    el += '<li><a href="https://github.com/netdata/netdata/wiki/mynetdata-menu-item" style="color: #666;" target="_blank">your netdata server list is empty...</a></li>';
                 else
-                    el += '<li><a href="https://github.com/firehol/netdata/wiki/mynetdata-menu-item" style="color: #666;" target="_blank">failed to contact the registry...</a></li>';
+                    el += '<li><a href="https://github.com/netdata/netdata/wiki/mynetdata-menu-item" style="color: #666;" target="_blank">failed to contact the registry...</a></li>';
 
                 a1 += '<li><a href="#" onClick="return false;">&nbsp;</a></li>';
 
@@ -1067,8 +1101,8 @@
             el += '<li role="separator" class="divider"></li>';
             a1 += '<li role="separator" class="divider"></li>';
 
-            el += '<li><a href="https://github.com/firehol/netdata/wiki/mynetdata-menu-item" style="color: #999;" target="_blank">What is this?</a></li>';
-            a1 += '<li><a href="#" style="color: #999;" onclick="switchRegistryModalHandler(); return false;"><i class="fas fa-cog" style="color: #999;"></i></a></li>'
+            el += '<li><a href="https://github.com/netdata/netdata/wiki/mynetdata-menu-item" style="color: #999;" target="_blank">What is this?</a></li>';
+            a1 += '<li><a href="#" style="color: #999;" onclick="switchRegistryModalHandler(); return false;"><i class="fas fa-cog" style="color: #999;"></i></a></li>';
 
             document.getElementById('mynetdata_servers').innerHTML = el;
             document.getElementById('mynetdata_servers2').innerHTML = el;
@@ -1086,8 +1120,11 @@
                     if(document.location.hostname.endsWith('.my-netdata.io') ||
                             document.location.hostname.endsWith('.mynetdata.io') ||
                             document.location.hostname.endsWith('.netdata.rocks') ||
+                            document.location.hostname.endsWith('.netdata.ai') ||
+                            document.location.hostname.endsWith('.netdata.live') ||
                             document.location.hostname.endsWith('.firehol.org') ||
-                            document.location.hostname.endsWith('.netdata.online'))
+                            document.location.hostname.endsWith('.netdata.online') ||
+                            document.location.hostname.endsWith('.netdata.cloud'))
                             this_is_demo = true;
                 }
             }
@@ -1097,7 +1134,8 @@
 
         function netdataURL(url, forReload) {
             if(typeof url === 'undefined')
-                url = document.location.toString();
+                // url = document.location.toString();
+                url = '';
 
             if(url.indexOf('#') !== -1)
                 url = url.substring(0, url.indexOf('#'));
@@ -1110,7 +1148,7 @@
         }
 
         function netdataReload(url) {
-            document.location = netdataURL(url, true);
+            document.location = verifyURL(netdataURL(url, true));
 
             // since we play with hash
             // this is needed to reload the page
@@ -1118,7 +1156,7 @@
         }
 
         function gotoHostedModalHandler(url) {
-            document.location = url + urlOptions.genHash();
+            document.location = verifyURL(url + urlOptions.genHash());
             return false;
         }
 
@@ -1126,13 +1164,13 @@
         var gotoServerMiddleClick = false;
         var gotoServerStop = false;
         function gotoServerValidateUrl(id, guid, url) {
-            var penaldy = 0;
+            var penalty = 0;
             var error = 'failed';
 
             if(document.location.toString().startsWith('http://') && url.toString().startsWith('https://'))
                 // we penalize https only if the current url is http
                 // to allow the user walk through all its servers.
-                penaldy = 500;
+                penalty = 500;
 
             else if(document.location.toString().startsWith('https://') && url.toString().startsWith('http://'))
                 error = 'can\'t check';
@@ -1140,7 +1178,7 @@
             var finalURL = netdataURL(url);
 
             setTimeout(function() {
-                document.getElementById('gotoServerList').innerHTML += '<tr><td style="padding-left: 20px;"><a href="' + finalURL + '" target="_blank">' + url + '</a></td><td style="padding-left: 30px;"><code id="' + guid + '-' + id + '-status">checking...</code></td></tr>';
+                document.getElementById('gotoServerList').innerHTML += '<tr><td style="padding-left: 20px;"><a href="' + verifyURL(finalURL) + '" target="_blank">' + escapeUserInputHTML(url) + '</a></td><td style="padding-left: 30px;"><code id="' + guid + '-' + id + '-status">checking...</code></td></tr>';
 
                 NETDATA.registry.hello(url, function(data) {
                     if(typeof data !== 'undefined' && data !== null && typeof data.machine_guid === 'string' && data.machine_guid === guid) {
@@ -1151,13 +1189,13 @@
                             gotoServerStop = true;
 
                             if(gotoServerMiddleClick) {
-                                window.open(finalURL, '_blank');
+                                window.open(verifyURL(finalURL), '_blank');
                                 gotoServerMiddleClick = false;
-                                document.getElementById('gotoServerResponse').innerHTML = '<b>Opening new window to ' + NETDATA.registry.machines[guid].name + '<br/><a href="' + finalURL + '">' + url + '</a></b><br/>(check your pop-up blocker if it fails)';
+                                document.getElementById('gotoServerResponse').innerHTML = '<b>Opening new window to ' + NETDATA.registry.machines[guid].name + '<br/><a href="' + verifyURL(finalURL) + '">' + escapeUserInputHTML(url) + '</a></b><br/>(check your pop-up blocker if it fails)';
                             }
                             else {
-                                document.getElementById('gotoServerResponse').innerHTML += 'found it! It is at:<br/><small>' + url + '</small>';
-                                document.location = finalURL;
+                                document.getElementById('gotoServerResponse').innerHTML += 'found it! It is at:<br/><small>' + escapeUserInputHTML(url) + '</small>';
+                                document.location = verifyURL(finalURL);
                             }
                         }
                     }
@@ -1173,7 +1211,7 @@
                         }
                     }
                 });
-            }, (id * 50) + penaldy);
+            }, (id * 50) + penalty);
         }
 
         function gotoServerModalHandler(guid) {
@@ -1528,7 +1566,7 @@
 
         // enrich the data structure returned by netdata
         // to reflect our menu system and content
-        // FIXME: this is a shame - we should fix charts naming (issue #807)
+        // TODO: this is a shame - we should fix charts naming (issue #807)
         function enrichChartData(chart) {
             var parts = chart.type.split('_');
             var tmp = parts[0];
@@ -1741,6 +1779,29 @@
                     + ' data-common-units="system.net.mainhead"'
                     + ' role="application"></div>';
             }
+            else if(typeof charts['system.ip'] !== 'undefined') {
+                head += '<div class="netdata-container" style="margin-right: 10px;" data-netdata="system.ip"'
+                    + ' data-dimensions="received"'
+                    + ' data-chart-library="easypiechart"'
+                    + ' data-title="IP Inbound"'
+                    + ' data-width="11%"'
+                    + ' data-before="0"'
+                    + ' data-after="-' + duration.toString() + '"'
+                    + ' data-points="' + duration.toString() + '"'
+                    + ' data-common-units="system.ip.mainhead"'
+                    + ' role="application"></div>';
+
+                head += '<div class="netdata-container" style="margin-right: 10px;" data-netdata="system.ip"'
+                    + ' data-dimensions="sent"'
+                    + ' data-chart-library="easypiechart"'
+                    + ' data-title="IP Outbound"'
+                    + ' data-width="11%"'
+                    + ' data-before="0"'
+                    + ' data-after="-' + duration.toString() + '"'
+                    + ' data-points="' + duration.toString() + '"'
+                    + ' data-common-units="system.ip.mainhead"'
+                    + ' role="application"></div>';
+            }
             else if(typeof charts['system.ipv4'] !== 'undefined') {
                 head += '<div class="netdata-container" style="margin-right: 10px;" data-netdata="system.ipv4"'
                     + ' data-dimensions="received"'
@@ -1817,9 +1878,9 @@
                 var hi = 0, hlen = hcharts.length;
                 while(hi < hlen) {
                     if(typeof hcharts[hi] === 'function')
-                        head += hcharts[hi](netdataDashboard.os, chart.id).replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
+                        head += hcharts[hi](netdataDashboard.os, chart.id).replace(/CHART_DURATION/g, duration.toString()).replace(/CHART_UNIQUE_ID/g, chart.id);
                     else
-                        head += hcharts[hi].replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
+                        head += hcharts[hi].replace(/CHART_DURATION/g, duration.toString()).replace(/CHART_UNIQUE_ID/g, chart.id);
                     hi++;
                 }
             }
@@ -1937,8 +1998,8 @@
                 html += mhead + shtml + '</div></div><hr role="separator"/>';
             }
 
-            sidebar += '<li class="" style="padding-top:15px;"><a href="https://github.com/firehol/netdata/wiki/Add-more-charts-to-netdata" target="_blank"><i class="fas fa-plus"></i> add more charts</a></li>';
-            sidebar += '<li class=""><a href="https://github.com/firehol/netdata/wiki/Add-more-alarms-to-netdata" target="_blank"><i class="fas fa-plus"></i> add more alarms</a></li>';
+            sidebar += '<li class="" style="padding-top:15px;"><a href="https://github.com/netdata/netdata/wiki/Add-more-charts-to-netdata" target="_blank"><i class="fas fa-plus"></i> add more charts</a></li>';
+            sidebar += '<li class=""><a href="https://github.com/netdata/netdata/wiki/Add-more-alarms-to-netdata" target="_blank"><i class="fas fa-plus"></i> add more alarms</a></li>';
             sidebar += '<li class="" style="margin:20px;color:#666;"><small>netdata on <b>' + data.hostname.toString() + '</b>, collects every ' + ((data.update_every === 1)?'second':data.update_every.toString() + ' seconds') + ' <b>' + data.dimensions_count.toLocaleString() + '</b> metrics, presented as <b>' + data.charts_count.toLocaleString() + '</b> charts and monitored by <b>' + data.alarms_count.toLocaleString() + '</b> alarms, using ' + Math.round(data.rrd_memory_bytes / 1024 / 1024).toLocaleString() + ' MB of memory for ' + NETDATA.seconds4human(data.update_every * data.history, { space: '&nbsp;' }) + ' of real-time history.<br/>&nbsp;<br/><b>netdata</b><br/>v' +  data.version.toString() +'</small></li>';
             sidebar += '</ul>';
             div.innerHTML = html;
@@ -2123,7 +2184,7 @@
         function alarmsUpdateModal() {
             var active = '<h3>Raised Alarms</h3><table class="table">';
             var all = '<h3>All Running Alarms</h3><div class="panel-group" id="alarms_all_accordion" role="tablist" aria-multiselectable="true">';
-            var footer = '<hr/><a href="https://github.com/firehol/netdata/wiki/Generating-Badges" target="_blank">netdata badges</a> refresh automatically. Their color indicates the state of the alarm: <span style="color: #e05d44"><b>&nbsp;red&nbsp;</b></span> is critical, <span style="color:#fe7d37"><b>&nbsp;orange&nbsp;</b></span> is warning, <span style="color: #4c1"><b>&nbsp;bright green&nbsp;</b></span> is ok, <span style="color: #9f9f9f"><b>&nbsp;light grey&nbsp;</b></span> is undefined (i.e. no data or no status), <span style="color: #000"><b>&nbsp;black&nbsp;</b></span> is not initialized. You can copy and paste their URLs to embed them in any web page.<br/>netdata can send notifications for these alarms. Check <a href="https://github.com/firehol/netdata/blob/master/conf.d/health_alarm_notify.conf">this configuration file</a> for more information.';
+            var footer = '<hr/><a href="https://github.com/netdata/netdata/wiki/Generating-Badges" target="_blank">netdata badges</a> refresh automatically. Their color indicates the state of the alarm: <span style="color: #e05d44"><b>&nbsp;red&nbsp;</b></span> is critical, <span style="color:#fe7d37"><b>&nbsp;orange&nbsp;</b></span> is warning, <span style="color: #4c1"><b>&nbsp;bright green&nbsp;</b></span> is ok, <span style="color: #9f9f9f"><b>&nbsp;light grey&nbsp;</b></span> is undefined (i.e. no data or no status), <span style="color: #000"><b>&nbsp;black&nbsp;</b></span> is not initialized. You can copy and paste their URLs to embed them in any web page.<br/>netdata can send notifications for these alarms. Check <a href="https://github.com/netdata/netdata/blob/master/conf.d/health_alarm_notify.conf">this configuration file</a> for more information.';
 
             loadClipboard(function() {});
 
@@ -2170,7 +2231,7 @@
                         dimensions = ' of the sum of all dimensions ';
 
                     if(typeof alarm.lookup_dimensions !== 'undefined') {
-                        var d = alarm.lookup_dimensions.replace('|', ',');
+                        var d = alarm.lookup_dimensions.replace(/|/g, ',');
                         var x = d.split(',');
                         if(x.length > 1)
                             dimensions = 'of the sum of dimensions <code>' + alarm.lookup_dimensions + '</code> ';
@@ -2181,7 +2242,7 @@
                     return '<code>' + alarm.lookup_method + '</code> '
                         + dimensions + ', of chart <code>' + alarm.chart + '</code>'
                         + ', starting <code>' + NETDATA.seconds4human(alarm.lookup_after + alarm.lookup_before, { space: '&nbsp;' }) + '</code> and up to <code>' + NETDATA.seconds4human(alarm.lookup_before, { space: '&nbsp;' }) + '</code>'
-                        + ((alarm.lookup_options)?(', with options <code>' + alarm.lookup_options.replace(' ', ',&nbsp;') + '</code>'):'')
+                        + ((alarm.lookup_options)?(', with options <code>' + alarm.lookup_options.replace(/ /g, ',&nbsp;') + '</code>'):'')
                         + '.';
                 }
 
@@ -2265,7 +2326,6 @@
                 }
 
                 // find the proper family of each alarm
-                var now = Date.now();
                 var x, family, alarm;
                 var count_active = 0;
                 var count_all = 0;
@@ -2756,7 +2816,7 @@
         }
 
         function alarmsCallback(data) {
-            var count = 0;
+            var count = 0, x;
             for(x in data.alarms) {
                 if(!data.alarms.hasOwnProperty(x)) continue;
 
@@ -2953,7 +3013,7 @@
             versionLog('Downloading latest git commit id info from github...');
 
             $.ajax({
-                url: 'https://api.github.com/repos/firehol/netdata/commits',
+                url: 'https://api.github.com/repos/netdata/netdata/commits',
                 async: true,
                 cache: false
             })
@@ -3003,21 +3063,21 @@
 
                 if(sha1 === null) {
                     save = false;
-                    versionLog('<p><big>Failed to get your netdata git commit id!</big></p><p>You can always get the latest netdata from <a href="https://github.com/firehol/netdata" target="_blank">its github page</a>.</p>');
+                    versionLog('<p><big>Failed to get your netdata git commit id!</big></p><p>You can always get the latest netdata from <a href="https://github.com/netdata/netdata" target="_blank">its github page</a>.</p>');
                 }
                 else if(sha2 === null) {
                     save = false;
-                    versionLog('<p><big>Failed to get the latest git commit id from github.</big></p><p>You can always get the latest netdata from <a href="https://github.com/firehol/netdata" target="_blank">its github page</a>.</p>');
+                    versionLog('<p><big>Failed to get the latest git commit id from github.</big></p><p>You can always get the latest netdata from <a href="https://github.com/netdata/netdata" target="_blank">its github page</a>.</p>');
                 }
                 else if(sha1 === sha2) {
                     save = true;
-                    versionLog('<p><big>You already have the latest netdata!</big></p><p>No update yet?<br/>Probably, we need some motivation to keep going on!</p><p>If you haven\'t already, <a href="https://github.com/firehol/netdata" target="_blank">give netdata a <b><i class="fas fa-star"></i></b> at its github page</a>.</p>');
+                    versionLog('<p><big>You already have the latest netdata!</big></p><p>No update yet?<br/>Probably, we need some motivation to keep going on!</p><p>If you haven\'t already, <a href="https://github.com/netdata/netdata" target="_blank">give netdata a <b><i class="fas fa-star"></i></b> at its github page</a>.</p>');
                 }
                 else {
                     save = true;
-                    var compare = 'https://github.com/firehol/netdata/compare/' + sha1.toString() + '...' + sha2.toString();
+                    var compare = 'https://github.com/netdata/netdata/compare/' + sha1.toString() + '...' + sha2.toString();
 
-                    versionLog('<p><big><strong>New version of netdata available!</strong></big></p><p>Latest commit: <b><code>' + sha2.substring(0, 7).toString() + '</code></b></p><p><a href="' + compare + '" target="_blank">Click here for the changes log</a> since your installed version, and<br/><a href="https://github.com/firehol/netdata/wiki/Updating-Netdata" target="_blank">click here for directions on updating</a> your netdata installation.</p><p>We suggest to review the changes log for new features you may be interested, or important bug fixes you may need.<br/>Keeping your netdata updated, is generally a good idea.</p>');
+                    versionLog('<p><big><strong>New version of netdata available!</strong></big></p><p>Latest commit: <b><code>' + sha2.substring(0, 7).toString() + '</code></b></p><p><a href="' + compare + '" target="_blank">Click here for the changes log</a> since your installed version, and<br/><a href="https://github.com/netdata/netdata/wiki/Updating-Netdata" target="_blank">click here for directions on updating</a> your netdata installation.</p><p>We suggest to review the changes log for new features you may be interested, or important bug fixes you may need.<br/>Keeping your netdata updated, is generally a good idea.</p>');
 
                     document.getElementById('update_badge').innerHTML = '!';
                 }
@@ -3266,7 +3326,7 @@
                     loadSnapshotModalLog('info', 'Please wait, activating snapshot...');
                     $('#loadSnapshotModal').modal('hide');
 
-                    netdataShowAlarms === false;
+                    netdataShowAlarms = false;
                     netdataRegistry = false;
                     netdataServer = tmpSnapshotData.server;
                     NETDATA.serverDefault = netdataServer;
@@ -3514,7 +3574,7 @@
                 var start_date = new Date(start_ms);
                 var yyyymmddhhssmm = start_date.getFullYear() + NETDATA.zeropad(start_date.getMonth() + 1) + NETDATA.zeropad(start_date.getDate()) + '-' + NETDATA.zeropad(start_date.getHours()) + NETDATA.zeropad(start_date.getMinutes()) + NETDATA.zeropad(start_date.getSeconds());
 
-                document.getElementById('saveSnapshotFilename').value = 'netdata-' + options.hostname.toString() + '-' + yyyymmddhhssmm.toString() + '-' +  saveSnapshotViewDuration.toString() + '.snapshot'
+                document.getElementById('saveSnapshotFilename').value = 'netdata-' + options.hostname.toString() + '-' + yyyymmddhhssmm.toString() + '-' +  saveSnapshotViewDuration.toString() + '.snapshot';
                 saveSnapshotSetCompression(saveSnapshotCompression);
 
                 var min = options.update_every;
@@ -3644,7 +3704,7 @@
                         var data = state.data;
                         state.data = null;
                         data.state = null;
-                        str = JSON.stringify(data);
+                        var str = JSON.stringify(data);
 
                         if (typeof str === 'string') {
                             var cstr = compress(str);
@@ -4403,7 +4463,7 @@
             });
 
             NETDATA.requiredJs.push({
-                url: NETDATA.serverStatic + 'dashboard_info.js?v20180224-3',
+                url: NETDATA.serverStatic + 'dashboard_info.js?v20181019-1',
                 async: false,
                 isAlreadyLoaded: function() { return false; }
             });
@@ -4469,7 +4529,7 @@
 
             document.getElementById('current_timezone').innerText = (NETDATA.options.current.timezone === 'default')?'unset, using browser default':NETDATA.options.current.timezone;
             return false;
-        }
+        };
 
         // our entry point
         // var netdataStarted = performance.now();
@@ -4523,7 +4583,7 @@
                     <li id="alarmsButton"  title="check the health monitoring alarms and their log" data-toggle="tooltip" data-placement="bottom"><a href="#" class="btn" data-toggle="modal" data-target="#alarmsModal"><i class="fas fa-bell"></i>&nbsp;<span class="hidden-sm hidden-md">Alarms&nbsp;</span><span id="alarms_count_badge" class="badge"></span></a></li>
                     <li title="change dashboard settings" data-toggle="tooltip" data-placement="bottom"><a href="#" class="btn" data-toggle="modal" data-target="#optionsModal"><i class="fas fa-cog"></i>&nbsp;<span class="hidden-sm hidden-md">Settings</span></a></li>
                     <li title="check for netdata updates<br/>you should keep your netdata updated" data-toggle="tooltip" data-placement="bottom" class="hidden-sm" id="updateButton"><a href="#" class="btn" data-toggle="modal" data-target="#updateModal"><i class="fas fa-cloud-download-alt"></i> <span class="hidden-sm hidden-md">Update </span><span id="update_badge" class="badge"></span></a></li>
-                    <li title="the netdata wiki home at github<br/>remember to <b>give netdata a <i class=&quot;fas fa-star&quot;></i></b> !" data-toggle="tooltip" data-placement="bottom" class="hidden-sm hidden-md"><a href="https://github.com/firehol/netdata/wiki" class="btn" target="_blank"><i class="fab fa-github"></i></a></li>
+                    <li title="the netdata wiki home at github<br/>remember to <b>give netdata a <i class=&quot;fas fa-star&quot;></i></b> !" data-toggle="tooltip" data-placement="bottom" class="hidden-sm hidden-md"><a href="https://github.com/netdata/netdata/wiki" class="btn" target="_blank"><i class="fab fa-github"></i></a></li>
                     <li title="follow netdata on twitter" data-toggle="tooltip" data-placement="bottom" class="hidden-sm hidden-md"><a href="https://twitter.com/linuxnetdata" class="btn" target="_blank"><i class="fab fa-twitter"></i></a></li>
                     <li title="like netdata on facebook" data-toggle="tooltip" data-placement="bottom" class="hidden-sm hidden-md"><a href="https://www.facebook.com/linuxnetdata/" class="btn" target="_blank"><i class="fab fa-facebook"></i></a></li>
                     <li title="import / load a netdata snapshot" data-toggle="tooltip" data-placement="bottom" id="loadButton"><a href="#" class="btn" data-toggle="modal" data-target="#loadSnapshotModal"><i class="fas fa-download"></i>&nbsp;<span class="hidden-sm hidden-md hidden-lg">Import</span></a></li>
@@ -4586,13 +4646,13 @@
         <div class="row">
             <div class="col-md-10" role="main">
                 <div class="p">
-                    <big><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></big><br/>
+                    <big><a href="https://github.com/netdata/netdata/wiki" target="_blank">netdata</a></big><br/>
                     <i class="fas fa-copyright"></i> Copyright 2016-2018, <a href="mailto:costa@tsaousis.gr">Costa Tsaousis</a>.<br/>
                     Released under <a href="http://www.gnu.org/licenses/gpl-3.0.en.html" target="_blank">GPL v3 or later</a>.<br/>
                 </div>
                 <div class="p">
                     <small>
-                        <a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a> re-distributes these software tools:
+                        <a href="https://github.com/netdata/netdata/wiki" target="_blank">netdata</a> uses the following third party tools on this dashboard:
 
                         <i class="fas fa-circle"></i> The excellent <a href="http://dygraphs.com/" target="_blank">Dygraphs.com</a> web chart library,
                         <i class="fas fa-copyright"></i> Copyright 2009, Dan Vanderkam, <a href="http://dygraphs.com/legal.html" target="_blank">MIT License</a>
@@ -4606,6 +4666,9 @@
                         <i class="fas fa-circle"></i> <a href="https://github.com/benkeen/d3pie" target="_blank">d3pie</a> web chart library,
                         <i class="fas fa-copyright"></i> Copyright 2014-2015 Benjamin Keen, <a href="https://github.com/benkeen/d3pie/blob/master/LICENSE" target="_blank">MIT License</a>
 
+                        <i class="fas fa-circle"></i> <a href="http://d3js.org/" target="_blank">D3</a> web graphics library,
+                        <i class="fas fa-copyright"></i> Copyright 2015 Mike Bostock, <a href="http://opensource.org/licenses/BSD-3-Clause" target="_blank">BSD License</a>
+
                         <i class="fas fa-circle"></i> <a href="https://jquery.org/" target="_blank">jQuery</a>,
                         <i class="fas fa-copyright"></i> Copyright 2015, jQuery Foundation, <a href="https://jquery.org/license/" target="_blank">MIT License</a>
 
@@ -4613,7 +4676,10 @@
                         <i class="fas fa-copyright"></i> Copyright 2015, Twitter, <a href="http://getbootstrap.com/getting-started/#license-faqs" target="_blank">MIT License</a>
 
                         <i class="fas fa-circle"></i> <a href="http://www.bootstraptoggle.com/" target="_blank">Bootstrap Toggle</a>,
-                        <i class="fas fa-copyright"></i> Copyright (c) 2011-2014 Min Hur, The New York Times Company, <a href="https://github.com/minhur/bootstrap-toggle/blob/master/LICENSE" target="_blank">MIT License</a>
+                        <i class="fas fa-copyright"></i> Copyright 2011-2014 Min Hur, The New York Times Company, <a href="https://github.com/minhur/bootstrap-toggle/blob/master/LICENSE" target="_blank">MIT License</a>
+
+                        <i class="fas fa-circle"></i> <a href="http://seiyria.com/bootstrap-slider/" target="_blank">Bootstrap-slider</a>,
+                        <i class="fas fa-copyright"></i> Copyright 2017 Kyle Kemp, Rohit Kalkur, and contributors, <a href="https://github.com/seiyria/bootstrap-slider/blob/master/LICENSE.md" target="_blank">MIT License</a>
 
                         <i class="fas fa-circle"></i> <a href="https://github.com/noraesae/perfect-scrollbar" target="_blank">perfect-scrollbar</a>,
                         <i class="fas fa-copyright"></i> Copyright 2016, Hyunje Alex Jun and other contributors, <a href="https://github.com/noraesae/perfect-scrollbar/blob/master/LICENSE" target="_blank">MIT License</a>
@@ -4624,10 +4690,10 @@
                         <i class="fas fa-circle"></i> <a href="http://www.iconsdb.com/soylent-red-icons/seo-performance-icon.html" target="_blank">IconsDB.com Icons</a>, Icons provided as CC0 1.0 Universal (CC0 1.0) Public Domain Dedication.
 
                         <i class="fas fa-circle"></i> <a href="http://bootstrap-table.wenzhixin.net.cn/" target="_blank">bootstrap-table</a>,
-                        <i class="fas fa-copyright"></i> Copyright (c) 2012-2016 Zhixin Wen, <a href="https://github.com/wenzhixin/bootstrap-table/blob/master/LICENSE" target="_blank">MIT License</a>
+                        <i class="fas fa-copyright"></i> Copyright 2012-2016 Zhixin Wen, <a href="https://github.com/wenzhixin/bootstrap-table/blob/master/LICENSE" target="_blank">MIT License</a>
 
                         <i class="fas fa-circle"></i> <a href="https://github.com/hhurz/tableExport.jquery.plugin" target="_blank">tableExport.jquery.plugin</a>,
-                        <i class="fas fa-copyright"></i> Copyright (c) 2015,2016 hhurz, <a href="http://rawgit.com/hhurz/tableExport.jquery.plugin/master/tableExport.js" target="_blank">MIT License</a>
+                        <i class="fas fa-copyright"></i> Copyright 2015,2016 hhurz, <a href="http://rawgit.com/hhurz/tableExport.jquery.plugin/master/tableExport.js" target="_blank">MIT License</a>
 
                     </small>
                 </div>
@@ -4861,14 +4927,14 @@
                         </div>
                     </div>
                     <div class="p">
-                        <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b>
+                        <b><a href="https://github.com/netdata/netdata/wiki" target="_blank">netdata</a></b>
                         is a new way to monitor your systems and applications, to get <strong>real-time insights</strong>
                         of what is really happening and what affects performance.
                         It is carefully optimised to be a real-time system, without interfering in any way,
                         to the core function of your systems.
                     </div>
                     <div class="p">
-                        <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b>
+                        <b><a href="https://github.com/netdata/netdata/wiki" target="_blank">netdata</a></b>
                         has been designed to monitor <strong>massive amounts of metrics, per server, per second</strong>.
                         When installed, it might come up with 1k to 3k metrics, but we have been testing it with 100k
                         metrics, all collected per second, and still the cpu utilisation remained negligible.
@@ -4878,9 +4944,9 @@
                         better understanding of the underlying technologies and mechanisms.
                     </div>
                     <div class="p">
-                        <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> is free,
+                        <b><a href="https://github.com/netdata/netdata/wiki" target="_blank">netdata</a></b> is free,
                         open-source software. If you decide to use it,
-                        <strong><a href="https://github.com/firehol/netdata/wiki/a-github-star-is-important" target="_blank">it is important to give netdata a star at GitHub</a></strong>.
+                        <strong><a href="https://github.com/netdata/netdata/wiki/a-github-star-is-important" target="_blank">it is important to give netdata a star at GitHub</a></strong>.
                     </div>
                     <div class="p">
                         Enjoy real-time performance monitoring!
@@ -5232,6 +5298,7 @@
                                                             <span class="caret"></span>
                                                         </button>
                                                         <ul class="dropdown-menu scrollable-menu-50" aria-labelledby="dropdownTimeZone">
+                                                            <li><a href=# onclick="return selected_server_timezone('UTC');">Universal Time Coordinated (UTC)</a></li>
                                                             <li><a href=# onclick="return selected_server_timezone('Africa/Abidjan');">Africa/Abidjan</a></li>
                                                             <li><a href=# onclick="return selected_server_timezone('Africa/Accra');">Africa/Accra</a></li>
                                                             <li><a href=# onclick="return selected_server_timezone('Africa/Algiers');">Africa/Algiers</a></li>
@@ -5618,7 +5685,7 @@
                         For progress reports and key netdata updates: <strong><a href="https://twitter.com/linuxnetdata" target="_blank">follow netdata on <i class="fab fa-twitter"></i> twitter</a></strong>.
                         <br/>
                         You can also <a href="https://www.facebook.com/linuxnetdata/" target="_blank">follow netdata on <i class="fab fa-facebook"></i> facebook</a>,
-                        or <a href="https://github.com/firehol/netdata" target="_blank">watch netdata on <i class="fab fa-github"></i> github</a>.
+                        or <a href="https://github.com/netdata/netdata" target="_blank">watch netdata on <i class="fab fa-github"></i> github</a>.
                     </div>
                 </div>
                 <div class="modal-footer">
@@ -5652,7 +5719,7 @@
                 </div>
                 <div class="modal-footer">
                     <button type="button" class="btn btn-success" data-dismiss="modal">keep it</button>
-                    <a href="#" onclick="notifyForDeleteRegistry(true); return false;" type="button" class="btn btn-danger">delete it</a>
+                    <a href="#" onclick="notifyForDeleteRegistry(); return false;" type="button" class="btn btn-danger">delete it</a>
                 </div>
             </div>
         </div>
@@ -5688,7 +5755,7 @@
                 </div>
                 <div class="modal-footer">
                     <button type="button" class="btn btn-success" data-dismiss="modal">cancel</button>
-                    <a href="#" onclick="notifyForSwitchRegistry(true); return false;" type="button" class="btn btn-danger">impersonate</a>
+                    <a href="#" onclick="notifyForSwitchRegistry(); return false;" type="button" class="btn btn-danger">impersonate</a>
                 </div>
             </div>
         </div>
@@ -5719,6 +5786,6 @@
         </div>
     </div>
     <div id="hiddenDownloadLinks" style="display: none;" hidden></div>
-    <script type="text/javascript" src="dashboard.js?v20180326-2"></script>
+    <script type="text/javascript" src="dashboard.js?v20181013-2"></script>
 </body>
 </html>
diff --git a/web/infographic.html b/web/gui/infographic.html
index 0bb571870..b3112781b 100644
--- a/web/infographic.html
+++ b/web/gui/infographic.html
@@ -1,4 +1,5 @@
 <!doctype html>
+<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
 <html lang=en-us>
 <head>
     <meta charset=utf-8>
@@ -164,7 +165,7 @@
     }(document, 'script', 'facebook-jssdk'));
 </script>
 
-<script type="text/javascript" src="https://www.draw.io/embed2.js?s=arrows2;mscae/cloud;azure;office/users;office/servers&fetch=https%3A%2F%2Fraw.githubusercontent.com%2Ffirehol%2Fnetdata%2Fmaster%2Fdiagrams%2Fnetdata-overview.xml"></script>
+<script type="text/javascript" src="https://www.draw.io/embed2.js?s=arrows2;mscae/cloud;azure;office/users;office/servers&fetch=https%3A%2F%2Fraw.githubusercontent.com%2Fnetdata%2Fnetdata%2Fmaster%2Fdiagrams%2Fnetdata-overview.xml"></script>
 
 </html>
 
diff --git a/web/lib/bootstrap-3.3.7.min.js b/web/gui/lib/bootstrap-3.3.7.min.js
index 9bcd2fcca..03a97168a 100644
--- a/web/lib/bootstrap-3.3.7.min.js
+++ b/web/gui/lib/bootstrap-3.3.7.min.js
@@ -2,6 +2,7 @@
  * Bootstrap v3.3.7 (http://getbootstrap.com)
  * Copyright 2011-2016 Twitter, Inc.
  * Licensed under the MIT license
+ * SPDX-License-Identifier: MIT
  */
 if("undefined"==typeof jQuery)throw new Error("Bootstrap's JavaScript requires jQuery");+function(a){"use strict";var b=a.fn.jquery.split(" ")[0].split(".");if(b[0]<2&&b[1]<9||1==b[0]&&9==b[1]&&b[2]<1||b[0]>3)throw new Error("Bootstrap's JavaScript requires jQuery version 1.9.1 or higher, but lower than version 4")}(jQuery),+function(a){"use strict";function b(){var a=document.createElement("bootstrap"),b={WebkitTransition:"webkitTransitionEnd",MozTransition:"transitionend",OTransition:"oTransitionEnd otransitionend",transition:"transitionend"};for(var c in b)if(void 0!==a.style[c])return{end:b[c]};return!1}a.fn.emulateTransitionEnd=function(b){var c=!1,d=this;a(this).one("bsTransitionEnd",function(){c=!0});var e=function(){c||a(d).trigger(a.support.transition.end)};return setTimeout(e,b),this},a(function(){a.support.transition=b(),a.support.transition&&(a.event.special.bsTransitionEnd={bindType:a.support.transition.end,delegateType:a.support.transition.end,handle:function(b){if(a(b.target).is(this))return b.handleObj.handler.apply(this,arguments)}})})}(jQuery),+function(a){"use strict";function b(b){return this.each(function(){var c=a(this),e=c.data("bs.alert");e||c.data("bs.alert",e=new d(this)),"string"==typeof b&&e[b].call(c)})}var c='[data-dismiss="alert"]',d=function(b){a(b).on("click",c,this.close)};d.VERSION="3.3.7",d.TRANSITION_DURATION=150,d.prototype.close=function(b){function c(){g.detach().trigger("closed.bs.alert").remove()}var e=a(this),f=e.attr("data-target");f||(f=e.attr("href"),f=f&&f.replace(/.*(?=#[^\s]*$)/,""));var 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diff --git a/web/lib/bootstrap-slider-10.0.0.min.js b/web/gui/lib/bootstrap-slider-10.0.0.min.js
index 2b98449b3..87e834908 100644
--- a/web/lib/bootstrap-slider-10.0.0.min.js
+++ b/web/gui/lib/bootstrap-slider-10.0.0.min.js
@@ -1,5 +1,6 @@
+// SPDX-License-Identifier: MIT
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y=this._addTickListener(),z=y.addMouseEnter(this,x,f),A=y.addMouseLeave(this,x);this.ticksCallbackMap[f]={mouseEnter:z,mouseLeave:A}}this.ticks.push(x),this.ticksContainer.appendChild(x)}j.className+=" tick-slider-selection"}if(this.tickLabels=[],Array.isArray(this.options.ticks_labels)&&this.options.ticks_labels.length>0)for(this.tickLabelContainer=document.createElement("div"),this.tickLabelContainer.className="slider-tick-label-container",f=0;f<this.options.ticks_labels.length;f++){var B=document.createElement("div"),C=0===this.options.ticks_positions.length,D=this.options.reversed&&C?this.options.ticks_labels.length-(f+1):f;B.className="slider-tick-label",B.innerHTML=this.options.ticks_labels[D],this.tickLabels.push(B),this.tickLabelContainer.appendChild(B)}var E=function(a){var b=document.createElement("div");b.className="tooltip-arrow";var c=document.createElement("div");c.className="tooltip-inner",a.appendChild(b),a.appendChild(c)},F=document.createElement("div");F.className="tooltip tooltip-main",F.setAttribute("role","presentation"),E(F);var G=document.createElement("div");G.className="tooltip tooltip-min",G.setAttribute("role","presentation"),E(G);var H=document.createElement("div");H.className="tooltip tooltip-max",H.setAttribute("role","presentation"),E(H),this.sliderElem.appendChild(r),this.sliderElem.appendChild(F),this.sliderElem.appendChild(G),this.sliderElem.appendChild(H),this.tickLabelContainer&&this.sliderElem.appendChild(this.tickLabelContainer),this.ticksContainer&&this.sliderElem.appendChild(this.ticksContainer),this.sliderElem.appendChild(m),this.sliderElem.appendChild(n),q.insertBefore(this.sliderElem,this.element),this.element.style.display="none"}if(a&&(this.$element=a(this.element),this.$sliderElem=a(this.sliderElem)),this.eventToCallbackMap={},this.sliderElem.id=this.options.id,this.touchCapable="ontouchstart"in window||window.DocumentTouch&&document instanceof window.DocumentTouch,this.touchX=0,this.touchY=0,this.tooltip=this.sliderElem.querySelector(".tooltip-main"),this.tooltipInner=this.tooltip.querySelector(".tooltip-inner"),this.tooltip_min=this.sliderElem.querySelector(".tooltip-min"),this.tooltipInner_min=this.tooltip_min.querySelector(".tooltip-inner"),this.tooltip_max=this.sliderElem.querySelector(".tooltip-max"),this.tooltipInner_max=this.tooltip_max.querySelector(".tooltip-inner"),g[this.options.scale]&&(this.options.scale=g[this.options.scale]),p===!0&&(this._removeClass(this.sliderElem,"slider-horizontal"),this._removeClass(this.sliderElem,"slider-vertical"),this._removeClass(this.sliderElem,"slider-rtl"),this._removeClass(this.tooltip,"hide"),this._removeClass(this.tooltip_min,"hide"),this._removeClass(this.tooltip_max,"hide"),["left","right","top","width","height"].forEach(function(a){this._removeProperty(this.trackLow,a),this._removeProperty(this.trackSelection,a),this._removeProperty(this.trackHigh,a)},this),[this.handle1,this.handle2].forEach(function(a){this._removeProperty(a,"left"),this._removeProperty(a,"right"),this._removeProperty(a,"top")},this),[this.tooltip,this.tooltip_min,this.tooltip_max].forEach(function(a){this._removeProperty(a,"left"),this._removeProperty(a,"right"),this._removeProperty(a,"top"),this._removeClass(a,"right"),this._removeClass(a,"left"),this._removeClass(a,"top")},this)),"vertical"===this.options.orientation?(this._addClass(this.sliderElem,"slider-vertical"),this.stylePos="top",this.mousePos="pageY",this.sizePos="offsetHeight"):(this._addClass(this.sliderElem,"slider-horizontal"),this.sliderElem.style.width=o,this.options.orientation="horizontal",this.options.rtl?this.stylePos="right":this.stylePos="left",this.mousePos="pageX",this.sizePos="offsetWidth"),this.options.rtl&&this._addClass(this.sliderElem,"slider-rtl"),this._setTooltipPosition(),Array.isArray(this.options.ticks)&&this.options.ticks.length>0&&(this.options.max=Math.max.apply(Math,this.options.ticks),this.options.min=Math.min.apply(Math,this.options.ticks)),Array.isArray(this.options.value)?(this.options.range=!0,this._state.value=this.options.value):this.options.range?this._state.value=[this.options.value,this.options.max]:this._state.value=this.options.value,this.trackLow=k||this.trackLow,this.trackSelection=j||this.trackSelection,this.trackHigh=l||this.trackHigh,"none"===this.options.selection?(this._addClass(this.trackLow,"hide"),this._addClass(this.trackSelection,"hide"),this._addClass(this.trackHigh,"hide")):("after"===this.options.selection||"before"===this.options.selection)&&(this._removeClass(this.trackLow,"hide"),this._removeClass(this.trackSelection,"hide"),this._removeClass(this.trackHigh,"hide")),this.handle1=m||this.handle1,this.handle2=n||this.handle2,p===!0)for(this._removeClass(this.handle1,"round triangle"),this._removeClass(this.handle2,"round triangle hide"),f=0;f<this.ticks.length;f++)this._removeClass(this.ticks[f],"round triangle hide");var I=["round","triangle","custom"],J=-1!==I.indexOf(this.options.handle);if(J)for(this._addClass(this.handle1,this.options.handle),this._addClass(this.handle2,this.options.handle),f=0;f<this.ticks.length;f++)this._addClass(this.ticks[f],this.options.handle);if(this._state.offset=this._offset(this.sliderElem),this._state.size=this.sliderElem[this.sizePos],this.setValue(this._state.value),this.handle1Keydown=this._keydown.bind(this,0),this.handle1.addEventListener("keydown",this.handle1Keydown,!1),this.handle2Keydown=this._keydown.bind(this,1),this.handle2.addEventListener("keydown",this.handle2Keydown,!1),this.mousedown=this._mousedown.bind(this),this.touchstart=this._touchstart.bind(this),this.touchmove=this._touchmove.bind(this),this.touchCapable){var K=!1;try{var L=Object.defineProperty({},"passive",{get:function(){K=!0}});window.addEventListener("test",null,L)}catch(M){}var N=K?{passive:!0}:!1;this.sliderElem.addEventListener("touchstart",this.touchstart,N),this.sliderElem.addEventListener("touchmove",this.touchmove,N)}if(this.sliderElem.addEventListener("mousedown",this.mousedown,!1),this.resize=this._resize.bind(this),window.addEventListener("resize",this.resize,!1),"hide"===this.options.tooltip)this._addClass(this.tooltip,"hide"),this._addClass(this.tooltip_min,"hide"),this._addClass(this.tooltip_max,"hide");else if("always"===this.options.tooltip)this._showTooltip(),this._alwaysShowTooltip=!0;else{if(this.showTooltip=this._showTooltip.bind(this),this.hideTooltip=this._hideTooltip.bind(this),this.options.ticks_tooltip){var O=this._addTickListener(),P=O.addMouseEnter(this,this.handle1),Q=O.addMouseLeave(this,this.handle1);this.handleCallbackMap.handle1={mouseEnter:P,mouseLeave:Q},P=O.addMouseEnter(this,this.handle2),Q=O.addMouseLeave(this,this.handle2),this.handleCallbackMap.handle2={mouseEnter:P,mouseLeave:Q}}else this.sliderElem.addEventListener("mouseenter",this.showTooltip,!1),this.sliderElem.addEventListener("mouseleave",this.hideTooltip,!1);this.handle1.addEventListener("focus",this.showTooltip,!1),this.handle1.addEventListener("blur",this.hideTooltip,!1),this.handle2.addEventListener("focus",this.showTooltip,!1),this.handle2.addEventListener("blur",this.hideTooltip,!1)}this.options.enabled?this.enable():this.disable()}var f={formatInvalidInputErrorMsg:function(a){return"Invalid input value '"+a+"' passed in"},callingContextNotSliderInstance:"Calling context element does not have instance of Slider bound to it. Check your code to make sure the JQuery object returned from the call to the slider() initializer is calling the method"},g={linear:{toValue:function(a){var b=a/100*(this.options.max-this.options.min),c=!0;if(this.options.ticks_positions.length>0){for(var d,e,f,g=0,h=1;h<this.options.ticks_positions.length;h++)if(a<=this.options.ticks_positions[h]){d=this.options.ticks[h-1],f=this.options.ticks_positions[h-1],e=this.options.ticks[h],g=this.options.ticks_positions[h];break}var i=(a-f)/(g-f);b=d+i*(e-d),c=!1}var j=c?this.options.min:0,k=j+Math.round(b/this.options.step)*this.options.step;return k<this.options.min?this.options.min:k>this.options.max?this.options.max:k},toPercentage:function(a){if(this.options.max===this.options.min)return 0;if(this.options.ticks_positions.length>0){for(var b,c,d,e=0,f=0;f<this.options.ticks.length;f++)if(a<=this.options.ticks[f]){b=f>0?this.options.ticks[f-1]:0,d=f>0?this.options.ticks_positions[f-1]:0,c=this.options.ticks[f],e=this.options.ticks_positions[f];break}if(f>0){var g=(a-b)/(c-b);return d+g*(e-d)}}return 100*(a-this.options.min)/(this.options.max-this.options.min)}},logarithmic:{toValue:function(a){var b=0===this.options.min?0:Math.log(this.options.min),c=Math.log(this.options.max),d=Math.exp(b+(c-b)*a/100);return Math.round(d)===this.options.max?this.options.max:(d=this.options.min+Math.round((d-this.options.min)/this.options.step)*this.options.step,d<this.options.min?this.options.min:d>this.options.max?this.options.max:d)},toPercentage:function(a){if(this.options.max===this.options.min)return 0;var b=Math.log(this.options.max),c=0===this.options.min?0:Math.log(this.options.min),d=0===a?0:Math.log(a);return 100*(d-c)/(b-c)}}};if(d=function(a,b){return e.call(this,a,b),this},d.prototype={_init:function(){},constructor:d,defaultOptions:{id:"",min:0,max:10,step:1,precision:0,orientation:"horizontal",value:5,range:!1,selection:"before",tooltip:"show",tooltip_split:!1,handle:"round",reversed:!1,rtl:"auto",enabled:!0,formatter:function(a){return Array.isArray(a)?a[0]+" : "+a[1]:a},natural_arrow_keys:!1,ticks:[],ticks_positions:[],ticks_labels:[],ticks_snap_bounds:0,ticks_tooltip:!1,scale:"linear",focus:!1,tooltip_position:null,labelledby:null,rangeHighlights:[]},getElement:function(){return this.sliderElem},getValue:function(){return this.options.range?this._state.value:this._state.value[0]},setValue:function(a,b,c){a||(a=0);var d=this.getValue();this._state.value=this._validateInputValue(a);var e=this._applyPrecision.bind(this);this.options.range?(this._state.value[0]=e(this._state.value[0]),this._state.value[1]=e(this._state.value[1]),this._state.value[0]=Math.max(this.options.min,Math.min(this.options.max,this._state.value[0])),this._state.value[1]=Math.max(this.options.min,Math.min(this.options.max,this._state.value[1]))):(this._state.value=e(this._state.value),this._state.value=[Math.max(this.options.min,Math.min(this.options.max,this._state.value))],this._addClass(this.handle2,"hide"),"after"===this.options.selection?this._state.value[1]=this.options.max:this._state.value[1]=this.options.min),this.options.max>this.options.min?this._state.percentage=[this._toPercentage(this._state.value[0]),this._toPercentage(this._state.value[1]),100*this.options.step/(this.options.max-this.options.min)]:this._state.percentage=[0,0,100],this._layout();var f=this.options.range?this._state.value:this._state.value[0];return this._setDataVal(f),b===!0&&this._trigger("slide",f),d!==f&&c===!0&&this._trigger("change",{oldValue:d,newValue:f}),this},destroy:function(){this._removeSliderEventHandlers(),this.sliderElem.parentNode.removeChild(this.sliderElem),this.element.style.display="",this._cleanUpEventCallbacksMap(),this.element.removeAttribute("data"),a&&(this._unbindJQueryEventHandlers(),this.$element.removeData("slider"))},disable:function(){return this._state.enabled=!1,this.handle1.removeAttribute("tabindex"),this.handle2.removeAttribute("tabindex"),this._addClass(this.sliderElem,"slider-disabled"),this._trigger("slideDisabled"),this},enable:function(){return this._state.enabled=!0,this.handle1.setAttribute("tabindex",0),this.handle2.setAttribute("tabindex",0),this._removeClass(this.sliderElem,"slider-disabled"),this._trigger("slideEnabled"),this},toggle:function(){return this._state.enabled?this.disable():this.enable(),this},isEnabled:function(){return this._state.enabled},on:function(a,b){return this._bindNonQueryEventHandler(a,b),this},off:function(b,c){a?(this.$element.off(b,c),this.$sliderElem.off(b,c)):this._unbindNonQueryEventHandler(b,c)},getAttribute:function(a){return a?this.options[a]:this.options},setAttribute:function(a,b){return this.options[a]=b,this},refresh:function(){return this._removeSliderEventHandlers(),e.call(this,this.element,this.options),a&&a.data(this.element,"slider",this),this},relayout:function(){return this._resize(),this._layout(),this},_removeSliderEventHandlers:function(){if(this.handle1.removeEventListener("keydown",this.handle1Keydown,!1),this.handle2.removeEventListener("keydown",this.handle2Keydown,!1),this.options.ticks_tooltip){for(var a=this.ticksContainer.getElementsByClassName("slider-tick"),b=0;b<a.length;b++)a[b].removeEventListener("mouseenter",this.ticksCallbackMap[b].mouseEnter,!1),a[b].removeEventListener("mouseleave",this.ticksCallbackMap[b].mouseLeave,!1);this.handle1.removeEventListener("mouseenter",this.handleCallbackMap.handle1.mouseEnter,!1),this.handle2.removeEventListener("mouseenter",this.handleCallbackMap.handle2.mouseEnter,!1),this.handle1.removeEventListener("mouseleave",this.handleCallbackMap.handle1.mouseLeave,!1),this.handle2.removeEventListener("mouseleave",this.handleCallbackMap.handle2.mouseLeave,!1)}this.handleCallbackMap=null,this.ticksCallbackMap=null,this.showTooltip&&(this.handle1.removeEventListener("focus",this.showTooltip,!1),this.handle2.removeEventListener("focus",this.showTooltip,!1)),this.hideTooltip&&(this.handle1.removeEventListener("blur",this.hideTooltip,!1),this.handle2.removeEventListener("blur",this.hideTooltip,!1)),this.showTooltip&&this.sliderElem.removeEventListener("mouseenter",this.showTooltip,!1),this.hideTooltip&&this.sliderElem.removeEventListener("mouseleave",this.hideTooltip,!1),this.sliderElem.removeEventListener("touchstart",this.touchstart,!1),this.sliderElem.removeEventListener("touchmove",this.touchmove,!1),this.sliderElem.removeEventListener("mousedown",this.mousedown,!1),window.removeEventListener("resize",this.resize,!1)},_bindNonQueryEventHandler:function(a,b){void 0===this.eventToCallbackMap[a]&&(this.eventToCallbackMap[a]=[]),this.eventToCallbackMap[a].push(b)},_unbindNonQueryEventHandler:function(a,b){var c=this.eventToCallbackMap[a];if(void 0!==c)for(var d=0;d<c.length;d++)if(c[d]===b){c.splice(d,1);break}},_cleanUpEventCallbacksMap:function(){for(var a=Object.keys(this.eventToCallbackMap),b=0;b<a.length;b++){var c=a[b];delete this.eventToCallbackMap[c]}},_showTooltip:function(){this.options.tooltip_split===!1?(this._addClass(this.tooltip,"in"),this.tooltip_min.style.display="none",this.tooltip_max.style.display="none"):(this._addClass(this.tooltip_min,"in"),this._addClass(this.tooltip_max,"in"),this.tooltip.style.display="none"),this._state.over=!0},_hideTooltip:function(){this._state.inDrag===!1&&this.alwaysShowTooltip!==!0&&(this._removeClass(this.tooltip,"in"),this._removeClass(this.tooltip_min,"in"),this._removeClass(this.tooltip_max,"in")),this._state.over=!1},_setToolTipOnMouseOver:function(a){function b(a,b){return b?[100-a.percentage[0],this.options.range?100-a.percentage[1]:a.percentage[1]]:[a.percentage[0],a.percentage[1]]}var c=this.options.formatter(a?a.value[0]:this._state.value[0]),d=a?b(a,this.options.reversed):b(this._state,this.options.reversed);this._setText(this.tooltipInner,c),this.tooltip.style[this.stylePos]=d[0]+"%"},_addTickListener:function(){return{addMouseEnter:function(a,b,c){var d=function(){var b=a._state,d=c>=0?c:this.attributes["aria-valuenow"].value,e=parseInt(d,10);b.value[0]=e,b.percentage[0]=a.options.ticks_positions[e],a._setToolTipOnMouseOver(b),a._showTooltip()};return b.addEventListener("mouseenter",d,!1),d},addMouseLeave:function(a,b){var c=function(){a._hideTooltip()};return b.addEventListener("mouseleave",c,!1),c}}},_layout:function(){var a;if(a=this.options.reversed?[100-this._state.percentage[0],this.options.range?100-this._state.percentage[1]:this._state.percentage[1]]:[this._state.percentage[0],this._state.percentage[1]],this.handle1.style[this.stylePos]=a[0]+"%",this.handle1.setAttribute("aria-valuenow",this._state.value[0]),isNaN(this.options.formatter(this._state.value[0]))&&this.handle1.setAttribute("aria-valuetext",this.options.formatter(this._state.value[0])),this.handle2.style[this.stylePos]=a[1]+"%",this.handle2.setAttribute("aria-valuenow",this._state.value[1]),isNaN(this.options.formatter(this._state.value[1]))&&this.handle2.setAttribute("aria-valuetext",this.options.formatter(this._state.value[1])),this.rangeHighlightElements.length>0&&Array.isArray(this.options.rangeHighlights)&&this.options.rangeHighlights.length>0)for(var b=0;b<this.options.rangeHighlights.length;b++){var c=this._toPercentage(this.options.rangeHighlights[b].start),d=this._toPercentage(this.options.rangeHighlights[b].end);if(this.options.reversed){var e=100-d;d=100-c,c=e}var f=this._createHighlightRange(c,d);f?"vertical"===this.options.orientation?(this.rangeHighlightElements[b].style.top=f.start+"%",this.rangeHighlightElements[b].style.height=f.size+"%"):(this.options.rtl?this.rangeHighlightElements[b].style.right=f.start+"%":this.rangeHighlightElements[b].style.left=f.start+"%",this.rangeHighlightElements[b].style.width=f.size+"%"):this.rangeHighlightElements[b].style.display="none"}if(Array.isArray(this.options.ticks)&&this.options.ticks.length>0){var g,h="vertical"===this.options.orientation?"height":"width";g="vertical"===this.options.orientation?"marginTop":this.options.rtl?"marginRight":"marginLeft";var i=this._state.size/(this.options.ticks.length-1);if(this.tickLabelContainer){var j=0;if(0===this.options.ticks_positions.length)"vertical"!==this.options.orientation&&(this.tickLabelContainer.style[g]=-i/2+"px"),j=this.tickLabelContainer.offsetHeight;else for(k=0;k<this.tickLabelContainer.childNodes.length;k++)this.tickLabelContainer.childNodes[k].offsetHeight>j&&(j=this.tickLabelContainer.childNodes[k].offsetHeight);"horizontal"===this.options.orientation&&(this.sliderElem.style.marginBottom=j+"px")}for(var k=0;k<this.options.ticks.length;k++){var l=this.options.ticks_positions[k]||this._toPercentage(this.options.ticks[k]);this.options.reversed&&(l=100-l),this.ticks[k].style[this.stylePos]=l+"%",this._removeClass(this.ticks[k],"in-selection"),this.options.range?l>=a[0]&&l<=a[1]&&this._addClass(this.ticks[k],"in-selection"):"after"===this.options.selection&&l>=a[0]?this._addClass(this.ticks[k],"in-selection"):"before"===this.options.selection&&l<=a[0]&&this._addClass(this.ticks[k],"in-selection"),this.tickLabels[k]&&(this.tickLabels[k].style[h]=i+"px","vertical"!==this.options.orientation&&void 0!==this.options.ticks_positions[k]?(this.tickLabels[k].style.position="absolute",this.tickLabels[k].style[this.stylePos]=l+"%",this.tickLabels[k].style[g]=-i/2+"px"):"vertical"===this.options.orientation&&(this.options.rtl?this.tickLabels[k].style.marginRight=this.sliderElem.offsetWidth+"px":this.tickLabels[k].style.marginLeft=this.sliderElem.offsetWidth+"px",this.tickLabelContainer.style[g]=this.sliderElem.offsetWidth/2*-1+"px"))}}var m;if(this.options.range){m=this.options.formatter(this._state.value),this._setText(this.tooltipInner,m),this.tooltip.style[this.stylePos]=(a[1]+a[0])/2+"%";var n=this.options.formatter(this._state.value[0]);this._setText(this.tooltipInner_min,n);var o=this.options.formatter(this._state.value[1]);this._setText(this.tooltipInner_max,o),this.tooltip_min.style[this.stylePos]=a[0]+"%",this.tooltip_max.style[this.stylePos]=a[1]+"%"}else m=this.options.formatter(this._state.value[0]),this._setText(this.tooltipInner,m),this.tooltip.style[this.stylePos]=a[0]+"%";if("vertical"===this.options.orientation)this.trackLow.style.top="0",this.trackLow.style.height=Math.min(a[0],a[1])+"%",this.trackSelection.style.top=Math.min(a[0],a[1])+"%",this.trackSelection.style.height=Math.abs(a[0]-a[1])+"%",this.trackHigh.style.bottom="0",this.trackHigh.style.height=100-Math.min(a[0],a[1])-Math.abs(a[0]-a[1])+"%";else{"right"===this.stylePos?this.trackLow.style.right="0":this.trackLow.style.left="0",this.trackLow.style.width=Math.min(a[0],a[1])+"%","right"===this.stylePos?this.trackSelection.style.right=Math.min(a[0],a[1])+"%":this.trackSelection.style.left=Math.min(a[0],a[1])+"%",this.trackSelection.style.width=Math.abs(a[0]-a[1])+"%","right"===this.stylePos?this.trackHigh.style.left="0":this.trackHigh.style.right="0",this.trackHigh.style.width=100-Math.min(a[0],a[1])-Math.abs(a[0]-a[1])+"%";var p=this.tooltip_min.getBoundingClientRect(),q=this.tooltip_max.getBoundingClientRect();"bottom"===this.options.tooltip_position?p.right>q.left?(this._removeClass(this.tooltip_max,"bottom"),this._addClass(this.tooltip_max,"top"),this.tooltip_max.style.top="",this.tooltip_max.style.bottom="22px"):(this._removeClass(this.tooltip_max,"top"),this._addClass(this.tooltip_max,"bottom"),this.tooltip_max.style.top=this.tooltip_min.style.top,this.tooltip_max.style.bottom=""):p.right>q.left?(this._removeClass(this.tooltip_max,"top"),this._addClass(this.tooltip_max,"bottom"),this.tooltip_max.style.top="18px"):(this._removeClass(this.tooltip_max,"bottom"),this._addClass(this.tooltip_max,"top"),this.tooltip_max.style.top=this.tooltip_min.style.top)}},_createHighlightRange:function(a,b){return this._isHighlightRange(a,b)?a>b?{start:b,size:a-b}:{start:a,size:b-a}:null},_isHighlightRange:function(a,b){return a>=0&&100>=a&&b>=0&&100>=b?!0:!1},_resize:function(a){this._state.offset=this._offset(this.sliderElem),this._state.size=this.sliderElem[this.sizePos],this._layout()},_removeProperty:function(a,b){a.style.removeProperty?a.style.removeProperty(b):a.style.removeAttribute(b)},_mousedown:function(a){if(!this._state.enabled)return!1;this._state.offset=this._offset(this.sliderElem),this._state.size=this.sliderElem[this.sizePos];var b=this._getPercentage(a);if(this.options.range){var c=Math.abs(this._state.percentage[0]-b),d=Math.abs(this._state.percentage[1]-b);this._state.dragged=d>c?0:1,this._adjustPercentageForRangeSliders(b)}else this._state.dragged=0;this._state.percentage[this._state.dragged]=b,this._layout(),this.touchCapable&&(document.removeEventListener("touchmove",this.mousemove,!1),document.removeEventListener("touchend",this.mouseup,!1)),this.mousemove&&document.removeEventListener("mousemove",this.mousemove,!1),this.mouseup&&document.removeEventListener("mouseup",this.mouseup,!1),this.mousemove=this._mousemove.bind(this),this.mouseup=this._mouseup.bind(this),this.touchCapable&&(document.addEventListener("touchmove",this.mousemove,!1),document.addEventListener("touchend",this.mouseup,!1)),document.addEventListener("mousemove",this.mousemove,!1),document.addEventListener("mouseup",this.mouseup,!1),this._state.inDrag=!0;var e=this._calculateValue();return this._trigger("slideStart",e),this._setDataVal(e),this.setValue(e,!1,!0),a.returnValue=!1,this.options.focus&&this._triggerFocusOnHandle(this._state.dragged),!0},_touchstart:function(a){if(void 0===a.changedTouches)return void this._mousedown(a);var b=a.changedTouches[0];this.touchX=b.pageX,this.touchY=b.pageY},_triggerFocusOnHandle:function(a){0===a&&this.handle1.focus(),1===a&&this.handle2.focus()},_keydown:function(a,b){if(!this._state.enabled)return!1;var c;switch(b.keyCode){case 37:case 40:c=-1;break;case 39:case 38:c=1}if(c){if(this.options.natural_arrow_keys){var d="vertical"===this.options.orientation&&!this.options.reversed,e="horizontal"===this.options.orientation&&this.options.reversed;(d||e)&&(c=-c)}var f=this._state.value[a]+c*this.options.step,g=f/this.options.max*100;if(this._state.keyCtrl=a,this.options.range){this._adjustPercentageForRangeSliders(g);var h=this._state.keyCtrl?this._state.value[0]:f,i=this._state.keyCtrl?f:this._state.value[1];f=[h,i]}return this._trigger("slideStart",f),this._setDataVal(f),this.setValue(f,!0,!0),this._setDataVal(f),this._trigger("slideStop",f),this._layout(),this._pauseEvent(b),delete this._state.keyCtrl,!1}},_pauseEvent:function(a){a.stopPropagation&&a.stopPropagation(),a.preventDefault&&a.preventDefault(),a.cancelBubble=!0,a.returnValue=!1},_mousemove:function(a){if(!this._state.enabled)return!1;var b=this._getPercentage(a);this._adjustPercentageForRangeSliders(b),this._state.percentage[this._state.dragged]=b,this._layout();var c=this._calculateValue(!0);return this.setValue(c,!0,!0),!1},_touchmove:function(a){if(void 0!==a.changedTouches){var b=a.changedTouches[0],c=b.pageX-this.touchX,d=b.pageY-this.touchY;this._state.inDrag||("vertical"===this.options.orientation&&5>=c&&c>=-5&&(d>=15||-15>=d)?this._mousedown(a):5>=d&&d>=-5&&(c>=15||-15>=c)&&this._mousedown(a))}},_adjustPercentageForRangeSliders:function(a){if(this.options.range){var b=this._getNumDigitsAfterDecimalPlace(a);b=b?b-1:0;var c=this._applyToFixedAndParseFloat(a,b);0===this._state.dragged&&this._applyToFixedAndParseFloat(this._state.percentage[1],b)<c?(this._state.percentage[0]=this._state.percentage[1],this._state.dragged=1):1===this._state.dragged&&this._applyToFixedAndParseFloat(this._state.percentage[0],b)>c?(this._state.percentage[1]=this._state.percentage[0],this._state.dragged=0):0===this._state.keyCtrl&&this._state.value[1]/this.options.max*100<a?(this._state.percentage[0]=this._state.percentage[1],this._state.keyCtrl=1,this.handle2.focus()):1===this._state.keyCtrl&&this._state.value[0]/this.options.max*100>a&&(this._state.percentage[1]=this._state.percentage[0],this._state.keyCtrl=0,this.handle1.focus())}},_mouseup:function(){if(!this._state.enabled)return!1;this.touchCapable&&(document.removeEventListener("touchmove",this.mousemove,!1),document.removeEventListener("touchend",this.mouseup,!1)),document.removeEventListener("mousemove",this.mousemove,!1),document.removeEventListener("mouseup",this.mouseup,!1),this._state.inDrag=!1,this._state.over===!1&&this._hideTooltip();var a=this._calculateValue(!0);return this._layout(),this._setDataVal(a),this._trigger("slideStop",a),!1},_calculateValue:function(a){var b;if(this.options.range?(b=[this.options.min,this.options.max],0!==this._state.percentage[0]&&(b[0]=this._toValue(this._state.percentage[0]),b[0]=this._applyPrecision(b[0])),100!==this._state.percentage[1]&&(b[1]=this._toValue(this._state.percentage[1]),b[1]=this._applyPrecision(b[1]))):(b=this._toValue(this._state.percentage[0]),b=parseFloat(b),b=this._applyPrecision(b)),a){for(var c=[b,1/0],d=0;d<this.options.ticks.length;d++){var e=Math.abs(this.options.ticks[d]-b);e<=c[1]&&(c=[this.options.ticks[d],e])}if(c[1]<=this.options.ticks_snap_bounds)return c[0]}return b},_applyPrecision:function(a){var b=this.options.precision||this._getNumDigitsAfterDecimalPlace(this.options.step);return this._applyToFixedAndParseFloat(a,b)},_getNumDigitsAfterDecimalPlace:function(a){var b=(""+a).match(/(?:\.(\d+))?(?:[eE]([+-]?\d+))?$/);return b?Math.max(0,(b[1]?b[1].length:0)-(b[2]?+b[2]:0)):0},_applyToFixedAndParseFloat:function(a,b){var c=a.toFixed(b);return parseFloat(c)},_getPercentage:function(a){!this.touchCapable||"touchstart"!==a.type&&"touchmove"!==a.type||(a=a.touches[0]);var b=a[this.mousePos],c=this._state.offset[this.stylePos],d=b-c;"right"===this.stylePos&&(d=-d);var e=d/this._state.size*100;return e=Math.round(e/this._state.percentage[2])*this._state.percentage[2],this.options.reversed&&(e=100-e),Math.max(0,Math.min(100,e))},_validateInputValue:function(a){if(isNaN(+a)){if(Array.isArray(a))return this._validateArray(a),a;throw new Error(f.formatInvalidInputErrorMsg(a))}return+a},_validateArray:function(a){for(var b=0;b<a.length;b++){
-var c=a[b];if("number"!=typeof c)throw new Error(f.formatInvalidInputErrorMsg(c))}},_setDataVal:function(a){this.element.setAttribute("data-value",a),this.element.setAttribute("value",a),this.element.value=a},_trigger:function(b,c){c=c||0===c?c:void 0;var d=this.eventToCallbackMap[b];if(d&&d.length)for(var e=0;e<d.length;e++){var f=d[e];f(c)}a&&this._triggerJQueryEvent(b,c)},_triggerJQueryEvent:function(a,b){var c={type:a,value:b};this.$element.trigger(c),this.$sliderElem.trigger(c)},_unbindJQueryEventHandlers:function(){this.$element.off(),this.$sliderElem.off()},_setText:function(a,b){"undefined"!=typeof a.textContent?a.textContent=b:"undefined"!=typeof a.innerText&&(a.innerText=b)},_removeClass:function(a,b){for(var c=b.split(" "),d=a.className,e=0;e<c.length;e++){var f=c[e],g=new RegExp("(?:\\s|^)"+f+"(?:\\s|$)");d=d.replace(g," ")}a.className=d.trim()},_addClass:function(a,b){for(var c=b.split(" "),d=a.className,e=0;e<c.length;e++){var f=c[e],g=new RegExp("(?:\\s|^)"+f+"(?:\\s|$)"),h=g.test(d);h||(d+=" "+f)}a.className=d.trim()},_offsetLeft:function(a){return a.getBoundingClientRect().left},_offsetRight:function(a){return a.getBoundingClientRect().right},_offsetTop:function(a){for(var b=a.offsetTop;(a=a.offsetParent)&&!isNaN(a.offsetTop);)b+=a.offsetTop,"BODY"!==a.tagName&&(b-=a.scrollTop);return b},_offset:function(a){return{left:this._offsetLeft(a),right:this._offsetRight(a),top:this._offsetTop(a)}},_css:function(b,c,d){if(a)a.style(b,c,d);else{var e=c.replace(/^-ms-/,"ms-").replace(/-([\da-z])/gi,function(a,b){return b.toUpperCase()});b.style[e]=d}},_toValue:function(a){return this.options.scale.toValue.apply(this,[a])},_toPercentage:function(a){return this.options.scale.toPercentage.apply(this,[a])},_setTooltipPosition:function(){var a=[this.tooltip,this.tooltip_min,this.tooltip_max];if("vertical"===this.options.orientation){var b;b=this.options.tooltip_position?this.options.tooltip_position:this.options.rtl?"left":"right";var c="left"===b?"right":"left";a.forEach(function(a){this._addClass(a,b),a.style[c]="100%"}.bind(this))}else"bottom"===this.options.tooltip_position?a.forEach(function(a){this._addClass(a,"bottom"),a.style.top="22px"}.bind(this)):a.forEach(function(a){this._addClass(a,"top"),a.style.top=-this.tooltip.outerHeight-14+"px"}.bind(this))}},a&&a.fn){var h=void 0;a.fn.slider?(windowIsDefined&&window.console.warn("bootstrap-slider.js - WARNING: $.fn.slider namespace is already bound. Use the $.fn.bootstrapSlider namespace instead."),h=c):(a.bridget(b,d),h=b),a.bridget(c,d),a(function(){a("input[data-provide=slider]")[h]()})}}(a),d});
\ No newline at end of file
+var c=a[b];if("number"!=typeof c)throw new Error(f.formatInvalidInputErrorMsg(c))}},_setDataVal:function(a){this.element.setAttribute("data-value",a),this.element.setAttribute("value",a),this.element.value=a},_trigger:function(b,c){c=c||0===c?c:void 0;var d=this.eventToCallbackMap[b];if(d&&d.length)for(var e=0;e<d.length;e++){var f=d[e];f(c)}a&&this._triggerJQueryEvent(b,c)},_triggerJQueryEvent:function(a,b){var c={type:a,value:b};this.$element.trigger(c),this.$sliderElem.trigger(c)},_unbindJQueryEventHandlers:function(){this.$element.off(),this.$sliderElem.off()},_setText:function(a,b){"undefined"!=typeof a.textContent?a.textContent=b:"undefined"!=typeof a.innerText&&(a.innerText=b)},_removeClass:function(a,b){for(var c=b.split(" "),d=a.className,e=0;e<c.length;e++){var f=c[e],g=new RegExp("(?:\\s|^)"+f+"(?:\\s|$)");d=d.replace(g," ")}a.className=d.trim()},_addClass:function(a,b){for(var c=b.split(" "),d=a.className,e=0;e<c.length;e++){var f=c[e],g=new RegExp("(?:\\s|^)"+f+"(?:\\s|$)"),h=g.test(d);h||(d+=" "+f)}a.className=d.trim()},_offsetLeft:function(a){return a.getBoundingClientRect().left},_offsetRight:function(a){return a.getBoundingClientRect().right},_offsetTop:function(a){for(var b=a.offsetTop;(a=a.offsetParent)&&!isNaN(a.offsetTop);)b+=a.offsetTop,"BODY"!==a.tagName&&(b-=a.scrollTop);return b},_offset:function(a){return{left:this._offsetLeft(a),right:this._offsetRight(a),top:this._offsetTop(a)}},_css:function(b,c,d){if(a)a.style(b,c,d);else{var e=c.replace(/^-ms-/,"ms-").replace(/-([\da-z])/gi,function(a,b){return b.toUpperCase()});b.style[e]=d}},_toValue:function(a){return this.options.scale.toValue.apply(this,[a])},_toPercentage:function(a){return this.options.scale.toPercentage.apply(this,[a])},_setTooltipPosition:function(){var a=[this.tooltip,this.tooltip_min,this.tooltip_max];if("vertical"===this.options.orientation){var b;b=this.options.tooltip_position?this.options.tooltip_position:this.options.rtl?"left":"right";var c="left"===b?"right":"left";a.forEach(function(a){this._addClass(a,b),a.style[c]="100%"}.bind(this))}else"bottom"===this.options.tooltip_position?a.forEach(function(a){this._addClass(a,"bottom"),a.style.top="22px"}.bind(this)):a.forEach(function(a){this._addClass(a,"top"),a.style.top=-this.tooltip.outerHeight-14+"px"}.bind(this))}},a&&a.fn){var h=void 0;a.fn.slider?(windowIsDefined&&window.console.warn("bootstrap-slider.js - WARNING: $.fn.slider namespace is already bound. Use the $.fn.bootstrapSlider namespace instead."),h=c):(a.bridget(b,d),h=b),a.bridget(c,d),a(function(){a("input[data-provide=slider]")[h]()})}}(a),d});
diff --git a/web/lib/bootstrap-table-1.11.0.min.js b/web/gui/lib/bootstrap-table-1.11.0.min.js
index aa8e6854a..f4c2b8a26 100644
--- a/web/lib/bootstrap-table-1.11.0.min.js
+++ b/web/gui/lib/bootstrap-table-1.11.0.min.js
@@ -3,6 +3,7 @@
 * https://github.com/wenzhixin/bootstrap-table
 * Copyright (c) 2016 zhixin wen
 * Licensed MIT License
+* SPDX-License-Identifier: MIT
 */
 !function(a){"use strict";var b=null,c=function(a){var b=arguments,c=!0,d=1;return a=a.replace(/%s/g,function(){var a=b[d++];return"undefined"==typeof a?(c=!1,""):a}),c?a:""},d=function(b,c,d,e){var f="";return a.each(b,function(a,b){return b[c]===e?(f=b[d],!1):!0}),f},e=function(b,c){var d=-1;return a.each(b,function(a,b){return b.field===c?(d=a,!1):!0}),d},f=function(b){var c,d,e,f=0,g=[];for(c=0;c<b[0].length;c++)f+=b[0][c].colspan||1;for(c=0;c<b.length;c++)for(g[c]=[],d=0;f>d;d++)g[c][d]=!1;for(c=0;c<b.length;c++)for(d=0;d<b[c].length;d++){var h=b[c][d],i=h.rowspan||1,j=h.colspan||1,k=a.inArray(!1,g[c]);for(1===j&&(h.fieldIndex=k,"undefined"==typeof h.field&&(h.field=k)),e=0;i>e;e++)g[c+e][k]=!0;for(e=0;j>e;e++)g[c][k+e]=!0}},g=function(){if(null===b){var c,d,e=a("<p/>").addClass("fixed-table-scroll-inner"),f=a("<div/>").addClass("fixed-table-scroll-outer");f.append(e),a("body").append(f),c=e[0].offsetWidth,f.css("overflow","scroll"),d=e[0].offsetWidth,c===d&&(d=f[0].clientWidth),f.remove(),b=c-d}return b},h=function(b,d,e,f){var g=d;if("string"==typeof d){var h=d.split(".");h.length>1?(g=window,a.each(h,function(a,b){g=g[b]})):g=window[d]}return"object"==typeof g?g:"function"==typeof g?g.apply(b,e):!g&&"string"==typeof d&&c.apply(this,[d].concat(e))?c.apply(this,[d].concat(e)):f},i=function(b,c,d){var e=Object.getOwnPropertyNames(b),f=Object.getOwnPropertyNames(c),g="";if(d&&e.length!==f.length)return!1;for(var h=0;h<e.length;h++)if(g=e[h],a.inArray(g,f)>-1&&b[g]!==c[g])return!1;return!0},j=function(a){return"string"==typeof a?a.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#039;").replace(/`/g,"&#x60;"):a},k=function(b){var c=0;return b.children().each(function(){c<a(this).outerHeight(!0)&&(c=a(this).outerHeight(!0))}),c},l=function(a){for(var b in a){var c=b.split(/(?=[A-Z])/).join("-").toLowerCase();c!==b&&(a[c]=a[b],delete a[b])}return a},m=function(a,b,c){var d=a;if("string"!=typeof b||a.hasOwnProperty(b))return c?j(a[b]):a[b];var e=b.split(".");for(var f in e)d=d&&d[e[f]];return c?j(d):d},n=function(){return!!(navigator.userAgent.indexOf("MSIE ")>0||navigator.userAgent.match(/Trident.*rv\:11\./))},o=function(){Object.keys||(Object.keys=function(){var a=Object.prototype.hasOwnProperty,b=!{toString:null}.propertyIsEnumerable("toString"),c=["toString","toLocaleString","valueOf","hasOwnProperty","isPrototypeOf","propertyIsEnumerable","constructor"],d=c.length;return function(e){if("object"!=typeof e&&("function"!=typeof e||null===e))throw new TypeError("Object.keys called on non-object");var f,g,h=[];for(f in e)a.call(e,f)&&h.push(f);if(b)for(g=0;d>g;g++)a.call(e,c[g])&&h.push(c[g]);return h}}())},p=function(b,c){this.options=c,this.$el=a(b),this.$el_=this.$el.clone(),this.timeoutId_=0,this.timeoutFooter_=0,this.init()};p.DEFAULTS={classes:"table table-hover",locale:void 0,height:void 0,undefinedText:"-",sortName:void 0,sortOrder:"asc",sortStable:!1,striped:!1,columns:[[]],data:[],dataField:"rows",method:"get",url:void 0,ajax:void 0,cache:!0,contentType:"application/json",dataType:"json",ajaxOptions:{},queryParams:function(a){return a},queryParamsType:"limit",responseHandler:function(a){return a},pagination:!1,onlyInfoPagination:!1,sidePagination:"client",totalRows:0,pageNumber:1,pageSize:10,pageList:[10,25,50,100],paginationHAlign:"right",paginationVAlign:"bottom",paginationDetailHAlign:"left",paginationPreText:"&lsaquo;",paginationNextText:"&rsaquo;",search:!1,searchOnEnterKey:!1,strictSearch:!1,searchAlign:"right",selectItemName:"btSelectItem",showHeader:!0,showFooter:!1,showColumns:!1,showPaginationSwitch:!1,showRefresh:!1,showToggle:!1,buttonsAlign:"right",smartDisplay:!0,escape:!1,minimumCountColumns:1,idField:void 0,uniqueId:void 0,cardView:!1,detailView:!1,detailFormatter:function(){return""},trimOnSearch:!0,clickToSelect:!1,singleSelect:!1,toolbar:void 0,toolbarAlign:"left",checkboxHeader:!0,sortable:!0,silentSort:!0,maintainSelected:!1,searchTimeOut:500,searchText:"",iconSize:void 0,buttonsClass:"default",iconsPrefix:"glyphicon",icons:{paginationSwitchDown:"glyphicon-collapse-down icon-chevron-down",paginationSwitchUp:"glyphicon-collapse-up icon-chevron-up",refresh:"glyphicon-refresh icon-refresh",toggle:"glyphicon-list-alt icon-list-alt",columns:"glyphicon-th icon-th",detailOpen:"glyphicon-plus icon-plus",detailClose:"glyphicon-minus icon-minus"},customSearch:a.noop,customSort:a.noop,rowStyle:function(){return{}},rowAttributes:function(){return{}},footerStyle:function(){return{}},onAll:function(){return!1},onClickCell:function(){return!1},onDblClickCell:function(){return!1},onClickRow:function(){return!1},onDblClickRow:function(){return!1},onSort:function(){return!1},onCheck:function(){return!1},onUncheck:function(){return!1},onCheckAll:function(){return!1},onUncheckAll:function(){return!1},onCheckSome:function(){return!1},onUncheckSome:function(){return!1},onLoadSuccess:function(){return!1},onLoadError:function(){return!1},onColumnSwitch:function(){return!1},onPageChange:function(){return!1},onSearch:function(){return!1},onToggle:function(){return!1},onPreBody:function(){return!1},onPostBody:function(){return!1},onPostHeader:function(){return!1},onExpandRow:function(){return!1},onCollapseRow:function(){return!1},onRefreshOptions:function(){return!1},onRefresh:function(){return!1},onResetView:function(){return!1}},p.LOCALES={},p.LOCALES["en-US"]=p.LOCALES.en={formatLoadingMessage:function(){return"Loading, please wait..."},formatRecordsPerPage:function(a){return c("%s rows per page",a)},formatShowingRows:function(a,b,d){return c("Showing %s to %s of %s rows",a,b,d)},formatDetailPagination:function(a){return c("Showing %s rows",a)},formatSearch:function(){return"Search"},formatNoMatches:function(){return"No matching records found"},formatPaginationSwitch:function(){return"Hide/Show pagination"},formatRefresh:function(){return"Refresh"},formatToggle:function(){return"Toggle"},formatColumns:function(){return"Columns"},formatAllRows:function(){return"All"}},a.extend(p.DEFAULTS,p.LOCALES["en-US"]),p.COLUMN_DEFAULTS={radio:!1,checkbox:!1,checkboxEnabled:!0,field:void 0,title:void 0,titleTooltip:void 0,"class":void 0,align:void 0,halign:void 0,falign:void 0,valign:void 0,width:void 0,sortable:!1,order:"asc",visible:!0,switchable:!0,clickToSelect:!0,formatter:void 0,footerFormatter:void 0,events:void 0,sorter:void 0,sortName:void 0,cellStyle:void 0,searchable:!0,searchFormatter:!0,cardVisible:!0},p.EVENTS={"all.bs.table":"onAll","click-cell.bs.table":"onClickCell","dbl-click-cell.bs.table":"onDblClickCell","click-row.bs.table":"onClickRow","dbl-click-row.bs.table":"onDblClickRow","sort.bs.table":"onSort","check.bs.table":"onCheck","uncheck.bs.table":"onUncheck","check-all.bs.table":"onCheckAll","uncheck-all.bs.table":"onUncheckAll","check-some.bs.table":"onCheckSome","uncheck-some.bs.table":"onUncheckSome","load-success.bs.table":"onLoadSuccess","load-error.bs.table":"onLoadError","column-switch.bs.table":"onColumnSwitch","page-change.bs.table":"onPageChange","search.bs.table":"onSearch","toggle.bs.table":"onToggle","pre-body.bs.table":"onPreBody","post-body.bs.table":"onPostBody","post-header.bs.table":"onPostHeader","expand-row.bs.table":"onExpandRow","collapse-row.bs.table":"onCollapseRow","refresh-options.bs.table":"onRefreshOptions","reset-view.bs.table":"onResetView","refresh.bs.table":"onRefresh"},p.prototype.init=function(){this.initLocale(),this.initContainer(),this.initTable(),this.initHeader(),this.initData(),this.initFooter(),this.initToolbar(),this.initPagination(),this.initBody(),this.initSearchText(),this.initServer()},p.prototype.initLocale=function(){if(this.options.locale){var b=this.options.locale.split(/-|_/);b[0].toLowerCase(),b[1]&&b[1].toUpperCase(),a.fn.bootstrapTable.locales[this.options.locale]?a.extend(this.options,a.fn.bootstrapTable.locales[this.options.locale]):a.fn.bootstrapTable.locales[b.join("-")]?a.extend(this.options,a.fn.bootstrapTable.locales[b.join("-")]):a.fn.bootstrapTable.locales[b[0]]&&a.extend(this.options,a.fn.bootstrapTable.locales[b[0]])}},p.prototype.initContainer=function(){this.$container=a(['<div class="bootstrap-table">','<div class="fixed-table-toolbar"></div>',"top"===this.options.paginationVAlign||"both"===this.options.paginationVAlign?'<div class="fixed-table-pagination" style="clear: both;"></div>':"",'<div class="fixed-table-container">','<div class="fixed-table-header"><table></table></div>','<div class="fixed-table-body">','<div class="fixed-table-loading">',this.options.formatLoadingMessage(),"</div>","</div>",'<div class="fixed-table-footer"><table><tr></tr></table></div>',"bottom"===this.options.paginationVAlign||"both"===this.options.paginationVAlign?'<div class="fixed-table-pagination"></div>':"","</div>","</div>"].join("")),this.$container.insertAfter(this.$el),this.$tableContainer=this.$container.find(".fixed-table-container"),this.$tableHeader=this.$container.find(".fixed-table-header"),this.$tableBody=this.$container.find(".fixed-table-body"),this.$tableLoading=this.$container.find(".fixed-table-loading"),this.$tableFooter=this.$container.find(".fixed-table-footer"),this.$toolbar=this.$container.find(".fixed-table-toolbar"),this.$pagination=this.$container.find(".fixed-table-pagination"),this.$tableBody.append(this.$el),this.$container.after('<div class="clearfix"></div>'),this.$el.addClass(this.options.classes),this.options.striped&&this.$el.addClass("table-striped"),-1!==a.inArray("table-no-bordered",this.options.classes.split(" "))&&this.$tableContainer.addClass("table-no-bordered")},p.prototype.initTable=function(){var b=this,c=[],d=[];if(this.$header=this.$el.find(">thead"),this.$header.length||(this.$header=a("<thead></thead>").appendTo(this.$el)),this.$header.find("tr").each(function(){var b=[];a(this).find("th").each(function(){"undefined"!=typeof a(this).data("field")&&a(this).data("field",a(this).data("field")+""),b.push(a.extend({},{title:a(this).html(),"class":a(this).attr("class"),titleTooltip:a(this).attr("title"),rowspan:a(this).attr("rowspan")?+a(this).attr("rowspan"):void 0,colspan:a(this).attr("colspan")?+a(this).attr("colspan"):void 0},a(this).data()))}),c.push(b)}),a.isArray(this.options.columns[0])||(this.options.columns=[this.options.columns]),this.options.columns=a.extend(!0,[],c,this.options.columns),this.columns=[],f(this.options.columns),a.each(this.options.columns,function(c,d){a.each(d,function(d,e){e=a.extend({},p.COLUMN_DEFAULTS,e),"undefined"!=typeof e.fieldIndex&&(b.columns[e.fieldIndex]=e),b.options.columns[c][d]=e})}),!this.options.data.length){var e=[];this.$el.find(">tbody>tr").each(function(c){var f={};f._id=a(this).attr("id"),f._class=a(this).attr("class"),f._data=l(a(this).data()),a(this).find(">td").each(function(d){for(var g,h,i=a(this),j=+i.attr("colspan")||1,k=+i.attr("rowspan")||1;e[c]&&e[c][d];d++);for(g=d;d+j>g;g++)for(h=c;c+k>h;h++)e[h]||(e[h]=[]),e[h][g]=!0;var m=b.columns[d].field;f[m]=a(this).html(),f["_"+m+"_id"]=a(this).attr("id"),f["_"+m+"_class"]=a(this).attr("class"),f["_"+m+"_rowspan"]=a(this).attr("rowspan"),f["_"+m+"_colspan"]=a(this).attr("colspan"),f["_"+m+"_title"]=a(this).attr("title"),f["_"+m+"_data"]=l(a(this).data())}),d.push(f)}),this.options.data=d,d.length&&(this.fromHtml=!0)}},p.prototype.initHeader=function(){var b=this,d={},e=[];this.header={fields:[],styles:[],classes:[],formatters:[],events:[],sorters:[],sortNames:[],cellStyles:[],searchables:[]},a.each(this.options.columns,function(f,g){e.push("<tr>"),0===f&&!b.options.cardView&&b.options.detailView&&e.push(c('<th class="detail" rowspan="%s"><div class="fht-cell"></div></th>',b.options.columns.length)),a.each(g,function(a,f){var g="",h="",i="",j="",k=c(' class="%s"',f["class"]),l=(b.options.sortOrder||f.order,"px"),m=f.width;if(void 0===f.width||b.options.cardView||"string"==typeof f.width&&-1!==f.width.indexOf("%")&&(l="%"),f.width&&"string"==typeof f.width&&(m=f.width.replace("%","").replace("px","")),h=c("text-align: %s; ",f.halign?f.halign:f.align),i=c("text-align: %s; ",f.align),j=c("vertical-align: %s; ",f.valign),j+=c("width: %s; ",!f.checkbox&&!f.radio||m?m?m+l:void 0:"36px"),"undefined"!=typeof f.fieldIndex){if(b.header.fields[f.fieldIndex]=f.field,b.header.styles[f.fieldIndex]=i+j,b.header.classes[f.fieldIndex]=k,b.header.formatters[f.fieldIndex]=f.formatter,b.header.events[f.fieldIndex]=f.events,b.header.sorters[f.fieldIndex]=f.sorter,b.header.sortNames[f.fieldIndex]=f.sortName,b.header.cellStyles[f.fieldIndex]=f.cellStyle,b.header.searchables[f.fieldIndex]=f.searchable,!f.visible)return;if(b.options.cardView&&!f.cardVisible)return;d[f.field]=f}e.push("<th"+c(' title="%s"',f.titleTooltip),f.checkbox||f.radio?c(' class="bs-checkbox %s"',f["class"]||""):k,c(' style="%s"',h+j),c(' rowspan="%s"',f.rowspan),c(' colspan="%s"',f.colspan),c(' data-field="%s"',f.field),"tabindex='0'",">"),e.push(c('<div class="th-inner %s">',b.options.sortable&&f.sortable?"sortable both":"")),g=f.title,f.checkbox&&(!b.options.singleSelect&&b.options.checkboxHeader&&(g='<input name="btSelectAll" type="checkbox" />'),b.header.stateField=f.field),f.radio&&(g="",b.header.stateField=f.field,b.options.singleSelect=!0),e.push(g),e.push("</div>"),e.push('<div class="fht-cell"></div>'),e.push("</div>"),e.push("</th>")}),e.push("</tr>")}),this.$header.html(e.join("")),this.$header.find("th[data-field]").each(function(){a(this).data(d[a(this).data("field")])}),this.$container.off("click",".th-inner").on("click",".th-inner",function(c){var d=a(this);return b.options.detailView&&d.closest(".bootstrap-table")[0]!==b.$container[0]?!1:void(b.options.sortable&&d.parent().data().sortable&&b.onSort(c))}),this.$header.children().children().off("keypress").on("keypress",function(c){if(b.options.sortable&&a(this).data().sortable){var d=c.keyCode||c.which;13==d&&b.onSort(c)}}),a(window).off("resize.bootstrap-table"),!this.options.showHeader||this.options.cardView?(this.$header.hide(),this.$tableHeader.hide(),this.$tableLoading.css("top",0)):(this.$header.show(),this.$tableHeader.show(),this.$tableLoading.css("top",this.$header.outerHeight()+1),this.getCaret(),a(window).on("resize.bootstrap-table",a.proxy(this.resetWidth,this))),this.$selectAll=this.$header.find('[name="btSelectAll"]'),this.$selectAll.off("click").on("click",function(){var c=a(this).prop("checked");b[c?"checkAll":"uncheckAll"](),b.updateSelected()})},p.prototype.initFooter=function(){!this.options.showFooter||this.options.cardView?this.$tableFooter.hide():this.$tableFooter.show()},p.prototype.initData=function(a,b){this.data="append"===b?this.data.concat(a):"prepend"===b?[].concat(a).concat(this.data):a||this.options.data,this.options.data="append"===b?this.options.data.concat(a):"prepend"===b?[].concat(a).concat(this.options.data):this.data,"server"!==this.options.sidePagination&&this.initSort()},p.prototype.initSort=function(){var b=this,c=this.options.sortName,d="desc"===this.options.sortOrder?-1:1,e=a.inArray(this.options.sortName,this.header.fields);return this.options.customSort!==a.noop?void this.options.customSort.apply(this,[this.options.sortName,this.options.sortOrder]):void(-1!==e&&(this.options.sortStable&&a.each(this.data,function(a,b){b.hasOwnProperty("_position")||(b._position=a)}),this.data.sort(function(f,g){b.header.sortNames[e]&&(c=b.header.sortNames[e]);var i=m(f,c,b.options.escape),j=m(g,c,b.options.escape),k=h(b.header,b.header.sorters[e],[i,j]);return void 0!==k?d*k:((void 0===i||null===i)&&(i=""),(void 0===j||null===j)&&(j=""),b.options.sortStable&&i===j&&(i=f._position,j=g._position),a.isNumeric(i)&&a.isNumeric(j)?(i=parseFloat(i),j=parseFloat(j),j>i?-1*d:d):i===j?0:("string"!=typeof i&&(i=i.toString()),-1===i.localeCompare(j)?-1*d:d))})))},p.prototype.onSort=function(b){var c="keypress"===b.type?a(b.currentTarget):a(b.currentTarget).parent(),d=this.$header.find("th").eq(c.index());return this.$header.add(this.$header_).find("span.order").remove(),this.options.sortName===c.data("field")?this.options.sortOrder="asc"===this.options.sortOrder?"desc":"asc":(this.options.sortName=c.data("field"),this.options.sortOrder="asc"===c.data("order")?"desc":"asc"),this.trigger("sort",this.options.sortName,this.options.sortOrder),c.add(d).data("order",this.options.sortOrder),this.getCaret(),"server"===this.options.sidePagination?void this.initServer(this.options.silentSort):(this.initSort(),void this.initBody())},p.prototype.initToolbar=function(){var b,d,e=this,f=[],g=0,i=0;this.$toolbar.find(".bs-bars").children().length&&a("body").append(a(this.options.toolbar)),this.$toolbar.html(""),("string"==typeof this.options.toolbar||"object"==typeof this.options.toolbar)&&a(c('<div class="bs-bars pull-%s"></div>',this.options.toolbarAlign)).appendTo(this.$toolbar).append(a(this.options.toolbar)),f=[c('<div class="columns columns-%s btn-group pull-%s">',this.options.buttonsAlign,this.options.buttonsAlign)],"string"==typeof this.options.icons&&(this.options.icons=h(null,this.options.icons)),this.options.showPaginationSwitch&&f.push(c('<button class="btn'+c(" btn-%s",this.options.buttonsClass)+c(" btn-%s",this.options.iconSize)+'" type="button" name="paginationSwitch" title="%s">',this.options.formatPaginationSwitch()),c('<i class="%s %s"></i>',this.options.iconsPrefix,this.options.icons.paginationSwitchDown),"</button>"),this.options.showRefresh&&f.push(c('<button class="btn'+c(" btn-%s",this.options.buttonsClass)+c(" btn-%s",this.options.iconSize)+'" type="button" name="refresh" title="%s">',this.options.formatRefresh()),c('<i class="%s %s"></i>',this.options.iconsPrefix,this.options.icons.refresh),"</button>"),this.options.showToggle&&f.push(c('<button class="btn'+c(" btn-%s",this.options.buttonsClass)+c(" btn-%s",this.options.iconSize)+'" type="button" name="toggle" title="%s">',this.options.formatToggle()),c('<i class="%s %s"></i>',this.options.iconsPrefix,this.options.icons.toggle),"</button>"),this.options.showColumns&&(f.push(c('<div class="keep-open btn-group" title="%s">',this.options.formatColumns()),'<button type="button" class="btn'+c(" btn-%s",this.options.buttonsClass)+c(" btn-%s",this.options.iconSize)+' dropdown-toggle" data-toggle="dropdown">',c('<i class="%s %s"></i>',this.options.iconsPrefix,this.options.icons.columns),' <span class="caret"></span>',"</button>",'<ul class="dropdown-menu" role="menu">'),a.each(this.columns,function(a,b){if(!(b.radio||b.checkbox||e.options.cardView&&!b.cardVisible)){var d=b.visible?' checked="checked"':"";b.switchable&&(f.push(c('<li><label><input type="checkbox" data-field="%s" value="%s"%s> %s</label></li>',b.field,a,d,b.title)),i++)}}),f.push("</ul>","</div>")),f.push("</div>"),(this.showToolbar||f.length>2)&&this.$toolbar.append(f.join("")),this.options.showPaginationSwitch&&this.$toolbar.find('button[name="paginationSwitch"]').off("click").on("click",a.proxy(this.togglePagination,this)),this.options.showRefresh&&this.$toolbar.find('button[name="refresh"]').off("click").on("click",a.proxy(this.refresh,this)),this.options.showToggle&&this.$toolbar.find('button[name="toggle"]').off("click").on("click",function(){e.toggleView()}),this.options.showColumns&&(b=this.$toolbar.find(".keep-open"),i<=this.options.minimumCountColumns&&b.find("input").prop("disabled",!0),b.find("li").off("click").on("click",function(a){a.stopImmediatePropagation()}),b.find("input").off("click").on("click",function(){var b=a(this);e.toggleColumn(a(this).val(),b.prop("checked"),!1),e.trigger("column-switch",a(this).data("field"),b.prop("checked"))})),this.options.search&&(f=[],f.push('<div class="pull-'+this.options.searchAlign+' search">',c('<input class="form-control'+c(" input-%s",this.options.iconSize)+'" type="text" placeholder="%s">',this.options.formatSearch()),"</div>"),this.$toolbar.append(f.join("")),d=this.$toolbar.find(".search input"),d.off("keyup drop").on("keyup drop",function(b){e.options.searchOnEnterKey&&13!==b.keyCode||a.inArray(b.keyCode,[37,38,39,40])>-1||(clearTimeout(g),g=setTimeout(function(){e.onSearch(b)},e.options.searchTimeOut))}),n()&&d.off("mouseup").on("mouseup",function(a){clearTimeout(g),g=setTimeout(function(){e.onSearch(a)},e.options.searchTimeOut)}))},p.prototype.onSearch=function(b){var c=a.trim(a(b.currentTarget).val());this.options.trimOnSearch&&a(b.currentTarget).val()!==c&&a(b.currentTarget).val(c),c!==this.searchText&&(this.searchText=c,this.options.searchText=c,this.options.pageNumber=1,this.initSearch(),this.updatePagination(),this.trigger("search",c))},p.prototype.initSearch=function(){var b=this;if("server"!==this.options.sidePagination){if(this.options.customSearch!==a.noop)return void this.options.customSearch.apply(this,[this.searchText]);var c=this.searchText&&(this.options.escape?j(this.searchText):this.searchText).toLowerCase(),d=a.isEmptyObject(this.filterColumns)?null:this.filterColumns;this.data=d?a.grep(this.options.data,function(b){for(var c in d)if(a.isArray(d[c])&&-1===a.inArray(b[c],d[c])||b[c]!==d[c])return!1;return!0}):this.options.data,this.data=c?a.grep(this.data,function(d,f){for(var g=0;g<b.header.fields.length;g++)if(b.header.searchables[g]){var i,j=a.isNumeric(b.header.fields[g])?parseInt(b.header.fields[g],10):b.header.fields[g],k=b.columns[e(b.columns,j)];if("string"==typeof j){i=d;for(var l=j.split("."),m=0;m<l.length;m++)i=i[l[m]];k&&k.searchFormatter&&(i=h(k,b.header.formatters[g],[i,d,f],i))}else i=d[j];if("string"==typeof i||"number"==typeof i)if(b.options.strictSearch){if((i+"").toLowerCase()===c)return!0}else if(-1!==(i+"").toLowerCase().indexOf(c))return!0}return!1}):this.data}},p.prototype.initPagination=function(){if(!this.options.pagination)return void this.$pagination.hide();this.$pagination.show();var b,d,e,f,g,h,i,j,k,l=this,m=[],n=!1,o=this.getData(),p=this.options.pageList;if("server"!==this.options.sidePagination&&(this.options.totalRows=o.length),this.totalPages=0,this.options.totalRows){if(this.options.pageSize===this.options.formatAllRows())this.options.pageSize=this.options.totalRows,n=!0;else if(this.options.pageSize===this.options.totalRows){var q="string"==typeof this.options.pageList?this.options.pageList.replace("[","").replace("]","").replace(/ /g,"").toLowerCase().split(","):this.options.pageList;a.inArray(this.options.formatAllRows().toLowerCase(),q)>-1&&(n=!0)}this.totalPages=~~((this.options.totalRows-1)/this.options.pageSize)+1,this.options.totalPages=this.totalPages}if(this.totalPages>0&&this.options.pageNumber>this.totalPages&&(this.options.pageNumber=this.totalPages),this.pageFrom=(this.options.pageNumber-1)*this.options.pageSize+1,this.pageTo=this.options.pageNumber*this.options.pageSize,this.pageTo>this.options.totalRows&&(this.pageTo=this.options.totalRows),m.push('<div class="pull-'+this.options.paginationDetailHAlign+' pagination-detail">','<span class="pagination-info">',this.options.onlyInfoPagination?this.options.formatDetailPagination(this.options.totalRows):this.options.formatShowingRows(this.pageFrom,this.pageTo,this.options.totalRows),"</span>"),!this.options.onlyInfoPagination){m.push('<span class="page-list">');var r=[c('<span class="btn-group %s">',"top"===this.options.paginationVAlign||"both"===this.options.paginationVAlign?"dropdown":"dropup"),'<button type="button" class="btn'+c(" btn-%s",this.options.buttonsClass)+c(" btn-%s",this.options.iconSize)+' dropdown-toggle" data-toggle="dropdown">','<span class="page-size">',n?this.options.formatAllRows():this.options.pageSize,"</span>",' <span class="caret"></span>',"</button>",'<ul class="dropdown-menu" role="menu">'];if("string"==typeof this.options.pageList){var s=this.options.pageList.replace("[","").replace("]","").replace(/ /g,"").split(",");p=[],a.each(s,function(a,b){p.push(b.toUpperCase()===l.options.formatAllRows().toUpperCase()?l.options.formatAllRows():+b)})}for(a.each(p,function(a,b){if(!l.options.smartDisplay||0===a||p[a-1]<=l.options.totalRows){var d;d=n?b===l.options.formatAllRows()?' class="active"':"":b===l.options.pageSize?' class="active"':"",r.push(c('<li%s><a href="javascript:void(0)">%s</a></li>',d,b))}}),r.push("</ul></span>"),m.push(this.options.formatRecordsPerPage(r.join(""))),m.push("</span>"),m.push("</div>",'<div class="pull-'+this.options.paginationHAlign+' pagination">','<ul class="pagination'+c(" pagination-%s",this.options.iconSize)+'">','<li class="page-pre"><a href="javascript:void(0)">'+this.options.paginationPreText+"</a></li>"),this.totalPages<5?(d=1,e=this.totalPages):(d=this.options.pageNumber-2,e=d+4,1>d&&(d=1,e=5),e>this.totalPages&&(e=this.totalPages,d=e-4)),this.totalPages>=6&&(this.options.pageNumber>=3&&(m.push('<li class="page-first'+(1===this.options.pageNumber?" active":"")+'">','<a href="javascript:void(0)">',1,"</a>","</li>"),d++),this.options.pageNumber>=4&&(4==this.options.pageNumber||6==this.totalPages||7==this.totalPages?d--:m.push('<li class="page-first-separator disabled">','<a href="javascript:void(0)">...</a>',"</li>"),e--)),this.totalPages>=7&&this.options.pageNumber>=this.totalPages-2&&d--,6==this.totalPages?this.options.pageNumber>=this.totalPages-2&&e++:this.totalPages>=7&&(7==this.totalPages||this.options.pageNumber>=this.totalPages-3)&&e++,b=d;e>=b;b++)m.push('<li class="page-number'+(b===this.options.pageNumber?" active":"")+'">','<a href="javascript:void(0)">',b,"</a>","</li>");this.totalPages>=8&&this.options.pageNumber<=this.totalPages-4&&m.push('<li class="page-last-separator disabled">','<a href="javascript:void(0)">...</a>',"</li>"),this.totalPages>=6&&this.options.pageNumber<=this.totalPages-3&&m.push('<li class="page-last'+(this.totalPages===this.options.pageNumber?" active":"")+'">','<a href="javascript:void(0)">',this.totalPages,"</a>","</li>"),m.push('<li class="page-next"><a href="javascript:void(0)">'+this.options.paginationNextText+"</a></li>","</ul>","</div>")}this.$pagination.html(m.join("")),this.options.onlyInfoPagination||(f=this.$pagination.find(".page-list a"),g=this.$pagination.find(".page-first"),h=this.$pagination.find(".page-pre"),i=this.$pagination.find(".page-next"),j=this.$pagination.find(".page-last"),k=this.$pagination.find(".page-number"),this.options.smartDisplay&&(this.totalPages<=1&&this.$pagination.find("div.pagination").hide(),(p.length<2||this.options.totalRows<=p[0])&&this.$pagination.find("span.page-list").hide(),this.$pagination[this.getData().length?"show":"hide"]()),n&&(this.options.pageSize=this.options.formatAllRows()),f.off("click").on("click",a.proxy(this.onPageListChange,this)),g.off("click").on("click",a.proxy(this.onPageFirst,this)),h.off("click").on("click",a.proxy(this.onPagePre,this)),i.off("click").on("click",a.proxy(this.onPageNext,this)),j.off("click").on("click",a.proxy(this.onPageLast,this)),k.off("click").on("click",a.proxy(this.onPageNumber,this)))},p.prototype.updatePagination=function(b){b&&a(b.currentTarget).hasClass("disabled")||(this.options.maintainSelected||this.resetRows(),this.initPagination(),"server"===this.options.sidePagination?this.initServer():this.initBody(),this.trigger("page-change",this.options.pageNumber,this.options.pageSize))},p.prototype.onPageListChange=function(b){var c=a(b.currentTarget);c.parent().addClass("active").siblings().removeClass("active"),this.options.pageSize=c.text().toUpperCase()===this.options.formatAllRows().toUpperCase()?this.options.formatAllRows():+c.text(),this.$toolbar.find(".page-size").text(this.options.pageSize),this.updatePagination(b)},p.prototype.onPageFirst=function(a){this.options.pageNumber=1,this.updatePagination(a)},p.prototype.onPagePre=function(a){this.options.pageNumber-1===0?this.options.pageNumber=this.options.totalPages:this.options.pageNumber--,this.updatePagination(a)},p.prototype.onPageNext=function(a){this.options.pageNumber+1>this.options.totalPages?this.options.pageNumber=1:this.options.pageNumber++,this.updatePagination(a)},p.prototype.onPageLast=function(a){this.options.pageNumber=this.totalPages,this.updatePagination(a)},p.prototype.onPageNumber=function(b){this.options.pageNumber!==+a(b.currentTarget).text()&&(this.options.pageNumber=+a(b.currentTarget).text(),this.updatePagination(b))},p.prototype.initBody=function(b){var f=this,g=[],i=this.getData();this.trigger("pre-body",i),this.$body=this.$el.find(">tbody"),this.$body.length||(this.$body=a("<tbody></tbody>").appendTo(this.$el)),this.options.pagination&&"server"!==this.options.sidePagination||(this.pageFrom=1,this.pageTo=i.length);for(var k=this.pageFrom-1;k<this.pageTo;k++){var l,n=i[k],o={},p=[],q="",r={},s=[];if(o=h(this.options,this.options.rowStyle,[n,k],o),o&&o.css)for(l in o.css)p.push(l+": "+o.css[l]);if(r=h(this.options,this.options.rowAttributes,[n,k],r))for(l in r)s.push(c('%s="%s"',l,j(r[l])));n._data&&!a.isEmptyObject(n._data)&&a.each(n._data,function(a,b){"index"!==a&&(q+=c(' data-%s="%s"',a,b))}),g.push("<tr",c(" %s",s.join(" ")),c(' id="%s"',a.isArray(n)?void 0:n._id),c(' class="%s"',o.classes||(a.isArray(n)?void 0:n._class)),c(' data-index="%s"',k),c(' data-uniqueid="%s"',n[this.options.uniqueId]),c("%s",q),">"),this.options.cardView&&g.push(c('<td colspan="%s"><div class="card-views">',this.header.fields.length)),!this.options.cardView&&this.options.detailView&&g.push("<td>",'<a class="detail-icon" href="javascript:">',c('<i class="%s %s"></i>',this.options.iconsPrefix,this.options.icons.detailOpen),"</a>","</td>"),a.each(this.header.fields,function(b,e){var i="",j=m(n,e,f.options.escape),l="",q={},r="",s=f.header.classes[b],t="",u="",v="",w="",x=f.columns[b];if(!(f.fromHtml&&"undefined"==typeof j||!x.visible||f.options.cardView&&!x.cardVisible)){if(o=c('style="%s"',p.concat(f.header.styles[b]).join("; ")),n["_"+e+"_id"]&&(r=c(' id="%s"',n["_"+e+"_id"])),n["_"+e+"_class"]&&(s=c(' class="%s"',n["_"+e+"_class"])),n["_"+e+"_rowspan"]&&(u=c(' rowspan="%s"',n["_"+e+"_rowspan"])),n["_"+e+"_colspan"]&&(v=c(' colspan="%s"',n["_"+e+"_colspan"])),n["_"+e+"_title"]&&(w=c(' title="%s"',n["_"+e+"_title"])),q=h(f.header,f.header.cellStyles[b],[j,n,k,e],q),q.classes&&(s=c(' class="%s"',q.classes)),q.css){var y=[];for(var z in q.css)y.push(z+": "+q.css[z]);o=c('style="%s"',y.concat(f.header.styles[b]).join("; "))}j=h(x,f.header.formatters[b],[j,n,k],j),n["_"+e+"_data"]&&!a.isEmptyObject(n["_"+e+"_data"])&&a.each(n["_"+e+"_data"],function(a,b){"index"!==a&&(t+=c(' data-%s="%s"',a,b))}),x.checkbox||x.radio?(l=x.checkbox?"checkbox":l,l=x.radio?"radio":l,i=[c(f.options.cardView?'<div class="card-view %s">':'<td class="bs-checkbox %s">',x["class"]||""),"<input"+c(' data-index="%s"',k)+c(' name="%s"',f.options.selectItemName)+c(' type="%s"',l)+c(' value="%s"',n[f.options.idField])+c(' checked="%s"',j===!0||j&&j.checked?"checked":void 0)+c(' disabled="%s"',!x.checkboxEnabled||j&&j.disabled?"disabled":void 0)+" />",f.header.formatters[b]&&"string"==typeof j?j:"",f.options.cardView?"</div>":"</td>"].join(""),n[f.header.stateField]=j===!0||j&&j.checked):(j="undefined"==typeof j||null===j?f.options.undefinedText:j,i=f.options.cardView?['<div class="card-view">',f.options.showHeader?c('<span class="title" %s>%s</span>',o,d(f.columns,"field","title",e)):"",c('<span class="value">%s</span>',j),"</div>"].join(""):[c("<td%s %s %s %s %s %s %s>",r,s,o,t,u,v,w),j,"</td>"].join(""),f.options.cardView&&f.options.smartDisplay&&""===j&&(i='<div class="card-view"></div>')),g.push(i)}}),this.options.cardView&&g.push("</div></td>"),g.push("</tr>")}g.length||g.push('<tr class="no-records-found">',c('<td colspan="%s">%s</td>',this.$header.find("th").length,this.options.formatNoMatches()),"</tr>"),this.$body.html(g.join("")),b||this.scrollTo(0),this.$body.find("> tr[data-index] > td").off("click dblclick").on("click dblclick",function(b){var d=a(this),g=d.parent(),h=f.data[g.data("index")],i=d[0].cellIndex,j=f.getVisibleFields(),k=j[f.options.detailView&&!f.options.cardView?i-1:i],l=f.columns[e(f.columns,k)],n=m(h,k,f.options.escape);if(!d.find(".detail-icon").length&&(f.trigger("click"===b.type?"click-cell":"dbl-click-cell",k,n,h,d),f.trigger("click"===b.type?"click-row":"dbl-click-row",h,g,k),
-"click"===b.type&&f.options.clickToSelect&&l.clickToSelect)){var o=g.find(c('[name="%s"]',f.options.selectItemName));o.length&&o[0].click()}}),this.$body.find("> tr[data-index] > td > .detail-icon").off("click").on("click",function(){var b=a(this),d=b.parent().parent(),e=d.data("index"),g=i[e];if(d.next().is("tr.detail-view"))b.find("i").attr("class",c("%s %s",f.options.iconsPrefix,f.options.icons.detailOpen)),d.next().remove(),f.trigger("collapse-row",e,g);else{b.find("i").attr("class",c("%s %s",f.options.iconsPrefix,f.options.icons.detailClose)),d.after(c('<tr class="detail-view"><td colspan="%s"></td></tr>',d.find("td").length));var j=d.next().find("td"),k=h(f.options,f.options.detailFormatter,[e,g,j],"");1===j.length&&j.append(k),f.trigger("expand-row",e,g,j)}f.resetView()}),this.$selectItem=this.$body.find(c('[name="%s"]',this.options.selectItemName)),this.$selectItem.off("click").on("click",function(b){b.stopImmediatePropagation();var c=a(this),d=c.prop("checked"),e=f.data[c.data("index")];f.options.maintainSelected&&a(this).is(":radio")&&a.each(f.options.data,function(a,b){b[f.header.stateField]=!1}),e[f.header.stateField]=d,f.options.singleSelect&&(f.$selectItem.not(this).each(function(){f.data[a(this).data("index")][f.header.stateField]=!1}),f.$selectItem.filter(":checked").not(this).prop("checked",!1)),f.updateSelected(),f.trigger(d?"check":"uncheck",e,c)}),a.each(this.header.events,function(b,c){if(c){"string"==typeof c&&(c=h(null,c));var d=f.header.fields[b],e=a.inArray(d,f.getVisibleFields());f.options.detailView&&!f.options.cardView&&(e+=1);for(var g in c)f.$body.find(">tr:not(.no-records-found)").each(function(){var b=a(this),h=b.find(f.options.cardView?".card-view":"td").eq(e),i=g.indexOf(" "),j=g.substring(0,i),k=g.substring(i+1),l=c[g];h.find(k).off(j).on(j,function(a){var c=b.data("index"),e=f.data[c],g=e[d];l.apply(this,[a,g,e,c])})})}}),this.updateSelected(),this.resetView(),this.trigger("post-body",i)},p.prototype.initServer=function(b,c,d){var e,f=this,g={},i={searchText:this.searchText,sortName:this.options.sortName,sortOrder:this.options.sortOrder};this.options.pagination&&(i.pageSize=this.options.pageSize===this.options.formatAllRows()?this.options.totalRows:this.options.pageSize,i.pageNumber=this.options.pageNumber),(d||this.options.url||this.options.ajax)&&("limit"===this.options.queryParamsType&&(i={search:i.searchText,sort:i.sortName,order:i.sortOrder},this.options.pagination&&(i.offset=this.options.pageSize===this.options.formatAllRows()?0:this.options.pageSize*(this.options.pageNumber-1),i.limit=this.options.pageSize===this.options.formatAllRows()?this.options.totalRows:this.options.pageSize)),a.isEmptyObject(this.filterColumnsPartial)||(i.filter=JSON.stringify(this.filterColumnsPartial,null)),g=h(this.options,this.options.queryParams,[i],g),a.extend(g,c||{}),g!==!1&&(b||this.$tableLoading.show(),e=a.extend({},h(null,this.options.ajaxOptions),{type:this.options.method,url:d||this.options.url,data:"application/json"===this.options.contentType&&"post"===this.options.method?JSON.stringify(g):g,cache:this.options.cache,contentType:this.options.contentType,dataType:this.options.dataType,success:function(a){a=h(f.options,f.options.responseHandler,[a],a),f.load(a),f.trigger("load-success",a),b||f.$tableLoading.hide()},error:function(a){f.trigger("load-error",a.status,a),b||f.$tableLoading.hide()}}),this.options.ajax?h(this,this.options.ajax,[e],null):(this._xhr&&4!==this._xhr.readyState&&this._xhr.abort(),this._xhr=a.ajax(e))))},p.prototype.initSearchText=function(){if(this.options.search&&""!==this.options.searchText){var a=this.$toolbar.find(".search input");a.val(this.options.searchText),this.onSearch({currentTarget:a})}},p.prototype.getCaret=function(){var b=this;a.each(this.$header.find("th"),function(c,d){a(d).find(".sortable").removeClass("desc asc").addClass(a(d).data("field")===b.options.sortName?b.options.sortOrder:"both")})},p.prototype.updateSelected=function(){var b=this.$selectItem.filter(":enabled").length&&this.$selectItem.filter(":enabled").length===this.$selectItem.filter(":enabled").filter(":checked").length;this.$selectAll.add(this.$selectAll_).prop("checked",b),this.$selectItem.each(function(){a(this).closest("tr")[a(this).prop("checked")?"addClass":"removeClass"]("selected")})},p.prototype.updateRows=function(){var b=this;this.$selectItem.each(function(){b.data[a(this).data("index")][b.header.stateField]=a(this).prop("checked")})},p.prototype.resetRows=function(){var b=this;a.each(this.data,function(a,c){b.$selectAll.prop("checked",!1),b.$selectItem.prop("checked",!1),b.header.stateField&&(c[b.header.stateField]=!1)})},p.prototype.trigger=function(b){var c=Array.prototype.slice.call(arguments,1);b+=".bs.table",this.options[p.EVENTS[b]].apply(this.options,c),this.$el.trigger(a.Event(b),c),this.options.onAll(b,c),this.$el.trigger(a.Event("all.bs.table"),[b,c])},p.prototype.resetHeader=function(){clearTimeout(this.timeoutId_),this.timeoutId_=setTimeout(a.proxy(this.fitHeader,this),this.$el.is(":hidden")?100:0)},p.prototype.fitHeader=function(){var b,d,e,f,h=this;if(h.$el.is(":hidden"))return void(h.timeoutId_=setTimeout(a.proxy(h.fitHeader,h),100));if(b=this.$tableBody.get(0),d=b.scrollWidth>b.clientWidth&&b.scrollHeight>b.clientHeight+this.$header.outerHeight()?g():0,this.$el.css("margin-top",-this.$header.outerHeight()),e=a(":focus"),e.length>0){var i=e.parents("th");if(i.length>0){var j=i.attr("data-field");if(void 0!==j){var k=this.$header.find("[data-field='"+j+"']");k.length>0&&k.find(":input").addClass("focus-temp")}}}this.$header_=this.$header.clone(!0,!0),this.$selectAll_=this.$header_.find('[name="btSelectAll"]'),this.$tableHeader.css({"margin-right":d}).find("table").css("width",this.$el.outerWidth()).html("").attr("class",this.$el.attr("class")).append(this.$header_),f=a(".focus-temp:visible:eq(0)"),f.length>0&&(f.focus(),this.$header.find(".focus-temp").removeClass("focus-temp")),this.$header.find("th[data-field]").each(function(){h.$header_.find(c('th[data-field="%s"]',a(this).data("field"))).data(a(this).data())});var l=this.getVisibleFields(),m=this.$header_.find("th");this.$body.find(">tr:first-child:not(.no-records-found) > *").each(function(b){var d=a(this),e=b;h.options.detailView&&!h.options.cardView&&(0===b&&h.$header_.find("th.detail").find(".fht-cell").width(d.innerWidth()),e=b-1);var f=h.$header_.find(c('th[data-field="%s"]',l[e]));f.length>1&&(f=a(m[d[0].cellIndex])),f.find(".fht-cell").width(d.innerWidth())}),this.$tableBody.off("scroll").on("scroll",function(){h.$tableHeader.scrollLeft(a(this).scrollLeft()),h.options.showFooter&&!h.options.cardView&&h.$tableFooter.scrollLeft(a(this).scrollLeft())}),h.trigger("post-header")},p.prototype.resetFooter=function(){var b=this,d=b.getData(),e=[];this.options.showFooter&&!this.options.cardView&&(!this.options.cardView&&this.options.detailView&&e.push('<td><div class="th-inner">&nbsp;</div><div class="fht-cell"></div></td>'),a.each(this.columns,function(a,f){var g,i="",j="",k=[],l={},m=c(' class="%s"',f["class"]);if(f.visible&&(!b.options.cardView||f.cardVisible)){if(i=c("text-align: %s; ",f.falign?f.falign:f.align),j=c("vertical-align: %s; ",f.valign),l=h(null,b.options.footerStyle),l&&l.css)for(g in l.css)k.push(g+": "+l.css[g]);e.push("<td",m,c(' style="%s"',i+j+k.concat().join("; ")),">"),e.push('<div class="th-inner">'),e.push(h(f,f.footerFormatter,[d],"&nbsp;")||"&nbsp;"),e.push("</div>"),e.push('<div class="fht-cell"></div>'),e.push("</div>"),e.push("</td>")}}),this.$tableFooter.find("tr").html(e.join("")),this.$tableFooter.show(),clearTimeout(this.timeoutFooter_),this.timeoutFooter_=setTimeout(a.proxy(this.fitFooter,this),this.$el.is(":hidden")?100:0))},p.prototype.fitFooter=function(){var b,c,d;return clearTimeout(this.timeoutFooter_),this.$el.is(":hidden")?void(this.timeoutFooter_=setTimeout(a.proxy(this.fitFooter,this),100)):(c=this.$el.css("width"),d=c>this.$tableBody.width()?g():0,this.$tableFooter.css({"margin-right":d}).find("table").css("width",c).attr("class",this.$el.attr("class")),b=this.$tableFooter.find("td"),void this.$body.find(">tr:first-child:not(.no-records-found) > *").each(function(c){var d=a(this);b.eq(c).find(".fht-cell").width(d.innerWidth())}))},p.prototype.toggleColumn=function(a,b,d){if(-1!==a&&(this.columns[a].visible=b,this.initHeader(),this.initSearch(),this.initPagination(),this.initBody(),this.options.showColumns)){var e=this.$toolbar.find(".keep-open input").prop("disabled",!1);d&&e.filter(c('[value="%s"]',a)).prop("checked",b),e.filter(":checked").length<=this.options.minimumCountColumns&&e.filter(":checked").prop("disabled",!0)}},p.prototype.toggleRow=function(a,b,d){-1!==a&&this.$body.find("undefined"!=typeof a?c('tr[data-index="%s"]',a):c('tr[data-uniqueid="%s"]',b))[d?"show":"hide"]()},p.prototype.getVisibleFields=function(){var b=this,c=[];return a.each(this.header.fields,function(a,d){var f=b.columns[e(b.columns,d)];f.visible&&c.push(d)}),c},p.prototype.resetView=function(a){var b=0;if(a&&a.height&&(this.options.height=a.height),this.$selectAll.prop("checked",this.$selectItem.length>0&&this.$selectItem.length===this.$selectItem.filter(":checked").length),this.options.height){var c=k(this.$toolbar),d=k(this.$pagination),e=this.options.height-c-d;this.$tableContainer.css("height",e+"px")}return this.options.cardView?(this.$el.css("margin-top","0"),this.$tableContainer.css("padding-bottom","0"),void this.$tableFooter.hide()):(this.options.showHeader&&this.options.height?(this.$tableHeader.show(),this.resetHeader(),b+=this.$header.outerHeight()):(this.$tableHeader.hide(),this.trigger("post-header")),this.options.showFooter&&(this.resetFooter(),this.options.height&&(b+=this.$tableFooter.outerHeight()+1)),this.getCaret(),this.$tableContainer.css("padding-bottom",b+"px"),void this.trigger("reset-view"))},p.prototype.getData=function(b){return!this.searchText&&a.isEmptyObject(this.filterColumns)&&a.isEmptyObject(this.filterColumnsPartial)?b?this.options.data.slice(this.pageFrom-1,this.pageTo):this.options.data:b?this.data.slice(this.pageFrom-1,this.pageTo):this.data},p.prototype.load=function(b){var c=!1;"server"===this.options.sidePagination?(this.options.totalRows=b.total,c=b.fixedScroll,b=b[this.options.dataField]):a.isArray(b)||(c=b.fixedScroll,b=b.data),this.initData(b),this.initSearch(),this.initPagination(),this.initBody(c)},p.prototype.append=function(a){this.initData(a,"append"),this.initSearch(),this.initPagination(),this.initSort(),this.initBody(!0)},p.prototype.prepend=function(a){this.initData(a,"prepend"),this.initSearch(),this.initPagination(),this.initSort(),this.initBody(!0)},p.prototype.remove=function(b){var c,d,e=this.options.data.length;if(b.hasOwnProperty("field")&&b.hasOwnProperty("values")){for(c=e-1;c>=0;c--)d=this.options.data[c],d.hasOwnProperty(b.field)&&-1!==a.inArray(d[b.field],b.values)&&this.options.data.splice(c,1);e!==this.options.data.length&&(this.initSearch(),this.initPagination(),this.initSort(),this.initBody(!0))}},p.prototype.removeAll=function(){this.options.data.length>0&&(this.options.data.splice(0,this.options.data.length),this.initSearch(),this.initPagination(),this.initBody(!0))},p.prototype.getRowByUniqueId=function(a){var b,c,d,e=this.options.uniqueId,f=this.options.data.length,g=null;for(b=f-1;b>=0;b--){if(c=this.options.data[b],c.hasOwnProperty(e))d=c[e];else{if(!c._data.hasOwnProperty(e))continue;d=c._data[e]}if("string"==typeof d?a=a.toString():"number"==typeof d&&(Number(d)===d&&d%1===0?a=parseInt(a):d===Number(d)&&0!==d&&(a=parseFloat(a))),d===a){g=c;break}}return g},p.prototype.removeByUniqueId=function(a){var b=this.options.data.length,c=this.getRowByUniqueId(a);c&&this.options.data.splice(this.options.data.indexOf(c),1),b!==this.options.data.length&&(this.initSearch(),this.initPagination(),this.initBody(!0))},p.prototype.updateByUniqueId=function(b){var c=this,d=a.isArray(b)?b:[b];a.each(d,function(b,d){var e;d.hasOwnProperty("id")&&d.hasOwnProperty("row")&&(e=a.inArray(c.getRowByUniqueId(d.id),c.options.data),-1!==e&&a.extend(c.options.data[e],d.row))}),this.initSearch(),this.initSort(),this.initBody(!0)},p.prototype.insertRow=function(a){a.hasOwnProperty("index")&&a.hasOwnProperty("row")&&(this.data.splice(a.index,0,a.row),this.initSearch(),this.initPagination(),this.initSort(),this.initBody(!0))},p.prototype.updateRow=function(b){var c=this,d=a.isArray(b)?b:[b];a.each(d,function(b,d){d.hasOwnProperty("index")&&d.hasOwnProperty("row")&&a.extend(c.options.data[d.index],d.row)}),this.initSearch(),this.initSort(),this.initBody(!0)},p.prototype.showRow=function(a){(a.hasOwnProperty("index")||a.hasOwnProperty("uniqueId"))&&this.toggleRow(a.index,a.uniqueId,!0)},p.prototype.hideRow=function(a){(a.hasOwnProperty("index")||a.hasOwnProperty("uniqueId"))&&this.toggleRow(a.index,a.uniqueId,!1)},p.prototype.getRowsHidden=function(b){var c=a(this.$body[0]).children().filter(":hidden"),d=0;if(b)for(;d<c.length;d++)a(c[d]).show();return c},p.prototype.mergeCells=function(b){var c,d,e,f=b.index,g=a.inArray(b.field,this.getVisibleFields()),h=b.rowspan||1,i=b.colspan||1,j=this.$body.find(">tr");if(this.options.detailView&&!this.options.cardView&&(g+=1),e=j.eq(f).find(">td").eq(g),!(0>f||0>g||f>=this.data.length)){for(c=f;f+h>c;c++)for(d=g;g+i>d;d++)j.eq(c).find(">td").eq(d).hide();e.attr("rowspan",h).attr("colspan",i).show()}},p.prototype.updateCell=function(a){a.hasOwnProperty("index")&&a.hasOwnProperty("field")&&a.hasOwnProperty("value")&&(this.data[a.index][a.field]=a.value,a.reinit!==!1&&(this.initSort(),this.initBody(!0)))},p.prototype.getOptions=function(){return this.options},p.prototype.getSelections=function(){var b=this;return a.grep(this.options.data,function(a){return a[b.header.stateField]})},p.prototype.getAllSelections=function(){var b=this;return a.grep(this.options.data,function(a){return a[b.header.stateField]})},p.prototype.checkAll=function(){this.checkAll_(!0)},p.prototype.uncheckAll=function(){this.checkAll_(!1)},p.prototype.checkInvert=function(){var b=this,c=b.$selectItem.filter(":enabled"),d=c.filter(":checked");c.each(function(){a(this).prop("checked",!a(this).prop("checked"))}),b.updateRows(),b.updateSelected(),b.trigger("uncheck-some",d),d=b.getSelections(),b.trigger("check-some",d)},p.prototype.checkAll_=function(a){var b;a||(b=this.getSelections()),this.$selectAll.add(this.$selectAll_).prop("checked",a),this.$selectItem.filter(":enabled").prop("checked",a),this.updateRows(),a&&(b=this.getSelections()),this.trigger(a?"check-all":"uncheck-all",b)},p.prototype.check=function(a){this.check_(!0,a)},p.prototype.uncheck=function(a){this.check_(!1,a)},p.prototype.check_=function(a,b){var d=this.$selectItem.filter(c('[data-index="%s"]',b)).prop("checked",a);this.data[b][this.header.stateField]=a,this.updateSelected(),this.trigger(a?"check":"uncheck",this.data[b],d)},p.prototype.checkBy=function(a){this.checkBy_(!0,a)},p.prototype.uncheckBy=function(a){this.checkBy_(!1,a)},p.prototype.checkBy_=function(b,d){if(d.hasOwnProperty("field")&&d.hasOwnProperty("values")){var e=this,f=[];a.each(this.options.data,function(g,h){if(!h.hasOwnProperty(d.field))return!1;if(-1!==a.inArray(h[d.field],d.values)){var 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\ No newline at end of file
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c=this,d=a.isArray(b)?b:[b];a.each(d,function(b,d){d.hasOwnProperty("index")&&d.hasOwnProperty("row")&&a.extend(c.options.data[d.index],d.row)}),this.initSearch(),this.initSort(),this.initBody(!0)},p.prototype.showRow=function(a){(a.hasOwnProperty("index")||a.hasOwnProperty("uniqueId"))&&this.toggleRow(a.index,a.uniqueId,!0)},p.prototype.hideRow=function(a){(a.hasOwnProperty("index")||a.hasOwnProperty("uniqueId"))&&this.toggleRow(a.index,a.uniqueId,!1)},p.prototype.getRowsHidden=function(b){var c=a(this.$body[0]).children().filter(":hidden"),d=0;if(b)for(;d<c.length;d++)a(c[d]).show();return c},p.prototype.mergeCells=function(b){var c,d,e,f=b.index,g=a.inArray(b.field,this.getVisibleFields()),h=b.rowspan||1,i=b.colspan||1,j=this.$body.find(">tr");if(this.options.detailView&&!this.options.cardView&&(g+=1),e=j.eq(f).find(">td").eq(g),!(0>f||0>g||f>=this.data.length)){for(c=f;f+h>c;c++)for(d=g;g+i>d;d++)j.eq(c).find(">td").eq(d).hide();e.attr("rowspan",h).attr("colspan",i).show()}},p.prototype.updateCell=function(a){a.hasOwnProperty("index")&&a.hasOwnProperty("field")&&a.hasOwnProperty("value")&&(this.data[a.index][a.field]=a.value,a.reinit!==!1&&(this.initSort(),this.initBody(!0)))},p.prototype.getOptions=function(){return this.options},p.prototype.getSelections=function(){var b=this;return a.grep(this.options.data,function(a){return a[b.header.stateField]})},p.prototype.getAllSelections=function(){var b=this;return a.grep(this.options.data,function(a){return a[b.header.stateField]})},p.prototype.checkAll=function(){this.checkAll_(!0)},p.prototype.uncheckAll=function(){this.checkAll_(!1)},p.prototype.checkInvert=function(){var b=this,c=b.$selectItem.filter(":enabled"),d=c.filter(":checked");c.each(function(){a(this).prop("checked",!a(this).prop("checked"))}),b.updateRows(),b.updateSelected(),b.trigger("uncheck-some",d),d=b.getSelections(),b.trigger("check-some",d)},p.prototype.checkAll_=function(a){var b;a||(b=this.getSelections()),this.$selectAll.add(this.$selectAll_).prop("checked",a),this.$selectItem.filter(":enabled").prop("checked",a),this.updateRows(),a&&(b=this.getSelections()),this.trigger(a?"check-all":"uncheck-all",b)},p.prototype.check=function(a){this.check_(!0,a)},p.prototype.uncheck=function(a){this.check_(!1,a)},p.prototype.check_=function(a,b){var d=this.$selectItem.filter(c('[data-index="%s"]',b)).prop("checked",a);this.data[b][this.header.stateField]=a,this.updateSelected(),this.trigger(a?"check":"uncheck",this.data[b],d)},p.prototype.checkBy=function(a){this.checkBy_(!0,a)},p.prototype.uncheckBy=function(a){this.checkBy_(!1,a)},p.prototype.checkBy_=function(b,d){if(d.hasOwnProperty("field")&&d.hasOwnProperty("values")){var e=this,f=[];a.each(this.options.data,function(g,h){if(!h.hasOwnProperty(d.field))return!1;if(-1!==a.inArray(h[d.field],d.values)){var i=e.$selectItem.filter(":enabled").filter(c('[data-index="%s"]',g)).prop("checked",b);h[e.header.stateField]=b,f.push(h),e.trigger(b?"check":"uncheck",h,i)}}),this.updateSelected(),this.trigger(b?"check-some":"uncheck-some",f)}},p.prototype.destroy=function(){this.$el.insertBefore(this.$container),a(this.options.toolbar).insertBefore(this.$el),this.$container.next().remove(),this.$container.remove(),this.$el.html(this.$el_.html()).css("margin-top","0").attr("class",this.$el_.attr("class")||"")},p.prototype.showLoading=function(){this.$tableLoading.show()},p.prototype.hideLoading=function(){this.$tableLoading.hide()},p.prototype.togglePagination=function(){this.options.pagination=!this.options.pagination;var a=this.$toolbar.find('button[name="paginationSwitch"] i');this.options.pagination?a.attr("class",this.options.iconsPrefix+" "+this.options.icons.paginationSwitchDown):a.attr("class",this.options.iconsPrefix+" "+this.options.icons.paginationSwitchUp),this.updatePagination()},p.prototype.refresh=function(a){a&&a.url&&(this.options.pageNumber=1),this.initServer(a&&a.silent,a&&a.query,a&&a.url),this.trigger("refresh",a)},p.prototype.resetWidth=function(){this.options.showHeader&&this.options.height&&this.fitHeader(),this.options.showFooter&&this.fitFooter()},p.prototype.showColumn=function(a){this.toggleColumn(e(this.columns,a),!0,!0)},p.prototype.hideColumn=function(a){this.toggleColumn(e(this.columns,a),!1,!0)},p.prototype.getHiddenColumns=function(){return a.grep(this.columns,function(a){return!a.visible})},p.prototype.getVisibleColumns=function(){return a.grep(this.columns,function(a){return a.visible})},p.prototype.toggleAllColumns=function(b){if(a.each(this.columns,function(a){this.columns[a].visible=b}),this.initHeader(),this.initSearch(),this.initPagination(),this.initBody(),this.options.showColumns){var c=this.$toolbar.find(".keep-open input").prop("disabled",!1);c.filter(":checked").length<=this.options.minimumCountColumns&&c.filter(":checked").prop("disabled",!0)}},p.prototype.showAllColumns=function(){this.toggleAllColumns(!0)},p.prototype.hideAllColumns=function(){this.toggleAllColumns(!1)},p.prototype.filterBy=function(b){this.filterColumns=a.isEmptyObject(b)?{}:b,this.options.pageNumber=1,this.initSearch(),this.updatePagination()},p.prototype.scrollTo=function(a){return"string"==typeof a&&(a="bottom"===a?this.$tableBody[0].scrollHeight:0),"number"==typeof a&&this.$tableBody.scrollTop(a),"undefined"==typeof a?this.$tableBody.scrollTop():void 0},p.prototype.getScrollPosition=function(){return this.scrollTo()},p.prototype.selectPage=function(a){a>0&&a<=this.options.totalPages&&(this.options.pageNumber=a,this.updatePagination())},p.prototype.prevPage=function(){this.options.pageNumber>1&&(this.options.pageNumber--,this.updatePagination())},p.prototype.nextPage=function(){this.options.pageNumber<this.options.totalPages&&(this.options.pageNumber++,this.updatePagination())},p.prototype.toggleView=function(){this.options.cardView=!this.options.cardView,this.initHeader(),this.initBody(),this.trigger("toggle",this.options.cardView)},p.prototype.refreshOptions=function(b){i(this.options,b,!0)||(this.options=a.extend(this.options,b),this.trigger("refresh-options",this.options),this.destroy(),this.init())},p.prototype.resetSearch=function(a){var b=this.$toolbar.find(".search input");b.val(a||""),this.onSearch({currentTarget:b})},p.prototype.expandRow_=function(a,b){var d=this.$body.find(c('> tr[data-index="%s"]',b));d.next().is("tr.detail-view")===(a?!1:!0)&&d.find("> td > .detail-icon").click()},p.prototype.expandRow=function(a){this.expandRow_(!0,a)},p.prototype.collapseRow=function(a){this.expandRow_(!1,a)},p.prototype.expandAllRows=function(b){if(b){var d=this.$body.find(c('> tr[data-index="%s"]',0)),e=this,f=null,g=!1,h=-1;if(d.next().is("tr.detail-view")?d.next().next().is("tr.detail-view")||(d.next().find(".detail-icon").click(),g=!0):(d.find("> td > .detail-icon").click(),g=!0),g)try{h=setInterval(function(){f=e.$body.find("tr.detail-view").last().find(".detail-icon"),f.length>0?f.click():clearInterval(h)},1)}catch(i){clearInterval(h)}}else for(var j=this.$body.children(),k=0;k<j.length;k++)this.expandRow_(!0,a(j[k]).data("index"))},p.prototype.collapseAllRows=function(b){if(b)this.expandRow_(!1,0);else for(var c=this.$body.children(),d=0;d<c.length;d++)this.expandRow_(!1,a(c[d]).data("index"))},p.prototype.updateFormatText=function(a,b){this.options[c("format%s",a)]&&("string"==typeof b?this.options[c("format%s",a)]=function(){return b}:"function"==typeof b&&(this.options[c("format%s",a)]=b)),this.initToolbar(),this.initPagination(),this.initBody()};var q=["getOptions","getSelections","getAllSelections","getData","load","append","prepend","remove","removeAll","insertRow","updateRow","updateCell","updateByUniqueId","removeByUniqueId","getRowByUniqueId","showRow","hideRow","getRowsHidden","mergeCells","checkAll","uncheckAll","checkInvert","check","uncheck","checkBy","uncheckBy","refresh","resetView","resetWidth","destroy","showLoading","hideLoading","showColumn","hideColumn","getHiddenColumns","getVisibleColumns","showAllColumns","hideAllColumns","filterBy","scrollTo","getScrollPosition","selectPage","prevPage","nextPage","togglePagination","toggleView","refreshOptions","resetSearch","expandRow","collapseRow","expandAllRows","collapseAllRows","updateFormatText"];a.fn.bootstrapTable=function(b){var c,d=Array.prototype.slice.call(arguments,1);return this.each(function(){var e=a(this),f=e.data("bootstrap.table"),g=a.extend({},p.DEFAULTS,e.data(),"object"==typeof b&&b);if("string"==typeof b){if(a.inArray(b,q)<0)throw new Error("Unknown method: "+b);if(!f)return;c=f[b].apply(f,d),"destroy"===b&&e.removeData("bootstrap.table")}f||e.data("bootstrap.table",f=new p(this,g))}),"undefined"==typeof c?this:c},a.fn.bootstrapTable.Constructor=p,a.fn.bootstrapTable.defaults=p.DEFAULTS,a.fn.bootstrapTable.columnDefaults=p.COLUMN_DEFAULTS,a.fn.bootstrapTable.locales=p.LOCALES,a.fn.bootstrapTable.methods=q,a.fn.bootstrapTable.utils={sprintf:c,getFieldIndex:e,compareObjects:i,calculateObjectValue:h,getItemField:m,objectKeys:o,isIEBrowser:n},a(function(){a('[data-toggle="table"]').bootstrapTable()})}(jQuery);
diff --git a/web/lib/bootstrap-table-export-1.11.0.min.js b/web/gui/lib/bootstrap-table-export-1.11.0.min.js
index 453076422..afa2d02e1 100644
--- a/web/lib/bootstrap-table-export-1.11.0.min.js
+++ b/web/gui/lib/bootstrap-table-export-1.11.0.min.js
@@ -3,5 +3,6 @@
 * https://github.com/wenzhixin/bootstrap-table
 * Copyright (c) 2016 zhixin wen
 * Licensed MIT License
+* SPDX-License-Identifier: MIT
 */
-!function(a){"use strict";var b=a.fn.bootstrapTable.utils.sprintf,c={json:"JSON",xml:"XML",png:"PNG",csv:"CSV",txt:"TXT",sql:"SQL",doc:"MS-Word",excel:"MS-Excel",powerpoint:"MS-Powerpoint",pdf:"PDF"};a.extend(a.fn.bootstrapTable.defaults,{showExport:!1,exportDataType:"basic",exportTypes:["json","xml","csv","txt","sql","excel"],exportOptions:{}}),a.extend(a.fn.bootstrapTable.defaults.icons,{"export":"glyphicon-export icon-share"}),a.extend(a.fn.bootstrapTable.locales,{formatExport:function(){return"Export data"}}),a.extend(a.fn.bootstrapTable.defaults,a.fn.bootstrapTable.locales);var d=a.fn.bootstrapTable.Constructor,e=d.prototype.initToolbar;d.prototype.initToolbar=function(){if(this.showToolbar=this.options.showExport,e.apply(this,Array.prototype.slice.apply(arguments)),this.options.showExport){var d=this,f=this.$toolbar.find(">.btn-group"),g=f.find("div.export");if(!g.length){g=a(['<div class="export btn-group">','<button class="btn'+b(" btn-%s",this.options.buttonsClass)+b(" btn-%s",this.options.iconSize)+' dropdown-toggle" title="'+this.options.formatExport()+'" data-toggle="dropdown" type="button">',b('<i class="%s %s"></i> ',this.options.iconsPrefix,this.options.icons["export"]),'<span class="caret"></span>',"</button>",'<ul class="dropdown-menu" role="menu">',"</ul>","</div>"].join("")).appendTo(f);var h=g.find(".dropdown-menu"),i=this.options.exportTypes;if("string"==typeof this.options.exportTypes){var j=this.options.exportTypes.slice(1,-1).replace(/ /g,"").split(",");i=[],a.each(j,function(a,b){i.push(b.slice(1,-1))})}a.each(i,function(a,b){c.hasOwnProperty(b)&&h.append(['<li data-type="'+b+'">','<a href="javascript:void(0)">',c[b],"</a>","</li>"].join(""))}),h.find("li").click(function(){var b=a(this).data("type"),c=function(){d.$el.tableExport(a.extend({},d.options.exportOptions,{type:b,escape:!1}))};if("all"===d.options.exportDataType&&d.options.pagination)d.$el.one("server"===d.options.sidePagination?"post-body.bs.table":"page-change.bs.table",function(){c(),d.togglePagination()}),d.togglePagination();else if("selected"===d.options.exportDataType){var e=d.getData(),f=d.getAllSelections();d.load(f),c(),d.load(e)}else c()})}}}}(jQuery);
\ No newline at end of file
+!function(a){"use strict";var b=a.fn.bootstrapTable.utils.sprintf,c={json:"JSON",xml:"XML",png:"PNG",csv:"CSV",txt:"TXT",sql:"SQL",doc:"MS-Word",excel:"MS-Excel",powerpoint:"MS-Powerpoint",pdf:"PDF"};a.extend(a.fn.bootstrapTable.defaults,{showExport:!1,exportDataType:"basic",exportTypes:["json","xml","csv","txt","sql","excel"],exportOptions:{}}),a.extend(a.fn.bootstrapTable.defaults.icons,{"export":"glyphicon-export icon-share"}),a.extend(a.fn.bootstrapTable.locales,{formatExport:function(){return"Export data"}}),a.extend(a.fn.bootstrapTable.defaults,a.fn.bootstrapTable.locales);var d=a.fn.bootstrapTable.Constructor,e=d.prototype.initToolbar;d.prototype.initToolbar=function(){if(this.showToolbar=this.options.showExport,e.apply(this,Array.prototype.slice.apply(arguments)),this.options.showExport){var d=this,f=this.$toolbar.find(">.btn-group"),g=f.find("div.export");if(!g.length){g=a(['<div class="export btn-group">','<button class="btn'+b(" btn-%s",this.options.buttonsClass)+b(" btn-%s",this.options.iconSize)+' dropdown-toggle" title="'+this.options.formatExport()+'" data-toggle="dropdown" type="button">',b('<i class="%s %s"></i> ',this.options.iconsPrefix,this.options.icons["export"]),'<span class="caret"></span>',"</button>",'<ul class="dropdown-menu" role="menu">',"</ul>","</div>"].join("")).appendTo(f);var h=g.find(".dropdown-menu"),i=this.options.exportTypes;if("string"==typeof this.options.exportTypes){var j=this.options.exportTypes.slice(1,-1).replace(/ /g,"").split(",");i=[],a.each(j,function(a,b){i.push(b.slice(1,-1))})}a.each(i,function(a,b){c.hasOwnProperty(b)&&h.append(['<li data-type="'+b+'">','<a href="javascript:void(0)">',c[b],"</a>","</li>"].join(""))}),h.find("li").click(function(){var b=a(this).data("type"),c=function(){d.$el.tableExport(a.extend({},d.options.exportOptions,{type:b,escape:!1}))};if("all"===d.options.exportDataType&&d.options.pagination)d.$el.one("server"===d.options.sidePagination?"post-body.bs.table":"page-change.bs.table",function(){c(),d.togglePagination()}),d.togglePagination();else if("selected"===d.options.exportDataType){var e=d.getData(),f=d.getAllSelections();d.load(f),c(),d.load(e)}else c()})}}}}(jQuery);
diff --git a/web/lib/bootstrap-toggle-2.2.2.min.js b/web/gui/lib/bootstrap-toggle-2.2.2.min.js
index 37113200b..a11e156f8 100644
--- a/web/lib/bootstrap-toggle-2.2.2.min.js
+++ b/web/gui/lib/bootstrap-toggle-2.2.2.min.js
@@ -4,6 +4,7 @@
  * ========================================================================
  * Copyright 2014 Min Hur, The New York Times Company
  * Licensed under MIT
+ * SPDX-License-Identifier: MIT
  * ======================================================================== */
 +function(a){"use strict";function b(b){return this.each(function(){var d=a(this),e=d.data("bs.toggle"),f="object"==typeof b&&b;e||d.data("bs.toggle",e=new c(this,f)),"string"==typeof b&&e[b]&&e[b]()})}var c=function(b,c){this.$element=a(b),this.options=a.extend({},this.defaults(),c),this.render()};c.VERSION="2.2.0",c.DEFAULTS={on:"On",off:"Off",onstyle:"primary",offstyle:"default",size:"normal",style:"",width:null,height:null},c.prototype.defaults=function(){return{on:this.$element.attr("data-on")||c.DEFAULTS.on,off:this.$element.attr("data-off")||c.DEFAULTS.off,onstyle:this.$element.attr("data-onstyle")||c.DEFAULTS.onstyle,offstyle:this.$element.attr("data-offstyle")||c.DEFAULTS.offstyle,size:this.$element.attr("data-size")||c.DEFAULTS.size,style:this.$element.attr("data-style")||c.DEFAULTS.style,width:this.$element.attr("data-width")||c.DEFAULTS.width,height:this.$element.attr("data-height")||c.DEFAULTS.height}},c.prototype.render=function(){this._onstyle="btn-"+this.options.onstyle,this._offstyle="btn-"+this.options.offstyle;var b="large"===this.options.size?"btn-lg":"small"===this.options.size?"btn-sm":"mini"===this.options.size?"btn-xs":"",c=a('<label class="btn">').html(this.options.on).addClass(this._onstyle+" "+b),d=a('<label class="btn">').html(this.options.off).addClass(this._offstyle+" "+b+" active"),e=a('<span class="toggle-handle btn btn-default">').addClass(b),f=a('<div class="toggle-group">').append(c,d,e),g=a('<div class="toggle btn" data-toggle="toggle">').addClass(this.$element.prop("checked")?this._onstyle:this._offstyle+" off").addClass(b).addClass(this.options.style);this.$element.wrap(g),a.extend(this,{$toggle:this.$element.parent(),$toggleOn:c,$toggleOff:d,$toggleGroup:f}),this.$toggle.append(f);var h=this.options.width||Math.max(c.outerWidth(),d.outerWidth())+e.outerWidth()/2,i=this.options.height||Math.max(c.outerHeight(),d.outerHeight());c.addClass("toggle-on"),d.addClass("toggle-off"),this.$toggle.css({width:h,height:i}),this.options.height&&(c.css("line-height",c.height()+"px"),d.css("line-height",d.height()+"px")),this.update(!0),this.trigger(!0)},c.prototype.toggle=function(){this.$element.prop("checked")?this.off():this.on()},c.prototype.on=function(a){return this.$element.prop("disabled")?!1:(this.$toggle.removeClass(this._offstyle+" off").addClass(this._onstyle),this.$element.prop("checked",!0),void(a||this.trigger()))},c.prototype.off=function(a){return this.$element.prop("disabled")?!1:(this.$toggle.removeClass(this._onstyle).addClass(this._offstyle+" off"),this.$element.prop("checked",!1),void(a||this.trigger()))},c.prototype.enable=function(){this.$toggle.removeAttr("disabled"),this.$element.prop("disabled",!1)},c.prototype.disable=function(){this.$toggle.attr("disabled","disabled"),this.$element.prop("disabled",!0)},c.prototype.update=function(a){this.$element.prop("disabled")?this.disable():this.enable(),this.$element.prop("checked")?this.on(a):this.off(a)},c.prototype.trigger=function(b){this.$element.off("change.bs.toggle"),b||this.$element.change(),this.$element.on("change.bs.toggle",a.proxy(function(){this.update()},this))},c.prototype.destroy=function(){this.$element.off("change.bs.toggle"),this.$toggleGroup.remove(),this.$element.removeData("bs.toggle"),this.$element.unwrap()};var d=a.fn.bootstrapToggle;a.fn.bootstrapToggle=b,a.fn.bootstrapToggle.Constructor=c,a.fn.toggle.noConflict=function(){return a.fn.bootstrapToggle=d,this},a(function(){a("input[type=checkbox][data-toggle^=toggle]").bootstrapToggle()}),a(document).on("click.bs.toggle","div[data-toggle^=toggle]",function(b){var c=a(this).find("input[type=checkbox]");c.bootstrapToggle("toggle"),b.preventDefault()})}(jQuery);
-//# sourceMappingURL=bootstrap-toggle.min.js.map
\ No newline at end of file
+//# sourceMappingURL=bootstrap-toggle.min.js.map
diff --git a/web/lib/c3-0.4.18.min.js b/web/gui/lib/c3-0.4.18.min.js
index f19081697..9491b72a6 100644
--- a/web/lib/c3-0.4.18.min.js
+++ b/web/gui/lib/c3-0.4.18.min.js
@@ -1 +1,2 @@
-!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.c3=e()}(this,function(){"use strict";function t(t,e){var i=this;i.component=t,i.params=e||{},i.d3=t.d3,i.scale=i.d3.scale.linear(),i.range,i.orient="bottom",i.innerTickSize=6,i.outerTickSize=this.params.withOuterTick?6:0,i.tickPadding=3,i.tickValues=null,i.tickFormat,i.tickArguments,i.tickOffset=0,i.tickCulling=!0,i.tickCentered,i.tickTextCharSize,i.tickTextRotate=i.params.tickTextRotate,i.tickLength,i.axis=i.generateAxis()}function e(t){var e=this.internal=new i(this);e.loadConfig(t),e.beforeInit(t),e.init(),e.afterInit(t),function t(e,i,n){Object.keys(e).forEach(function(a){i[a]=e[a].bind(n),Object.keys(e[a]).length>0&&t(e[a],i[a],n)})}(P,this,this)}function i(t){var e=this;e.d3=window.d3?window.d3:"undefined"!=typeof require?require("d3"):void 0,e.api=t,e.config=e.getDefaultConfig(),e.data={},e.cache={},e.axes={}}var 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Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t},s=function(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")},c=function(t,e){if("function"!=typeof e&&null!==e)throw new TypeError("Super expression must either be null or a function, not "+typeof e);t.prototype=Object.create(e&&e.prototype,{constructor:{value:t,enumerable:!1,writable:!0,configurable:!0}}),e&&(Object.setPrototypeOf?Object.setPrototypeOf(t,e):t.__proto__=e)},d=function(t,e){if(!t)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return!e||"object"!=typeof e&&"function"!=typeof e?t:e},l=function(t){return t||0===t},u=function(t){return"function"==typeof t},h=function(t){return Array.isArray(t)},g=function(t){return"string"==typeof t},f=function(t){return void 0===t},p=function(t){return void 0!==t},_=function(t){return 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this.params.withoutTransition?t:this.d3.transition(t)},a.isVertical=function(){return"left"===this.orient||"right"===this.orient},a.tspanData=function(t,e,i,n){var a=this,r=a.params.tickMultiline?a.splitTickText(t,i,n):[].concat(a.textFormatted(t));return r.map(function(t){return{index:e,splitted:t,length:r.length}})},a.splitTickText=function(t,e,i){function n(t,e){r=void 0;for(var i=1;i<e.length;i++)if(" "===e.charAt(i)&&(r=i),a=e.substr(0,i+1),o=s.tickTextCharSize.w*a.length,d<o)return n(t.concat(e.substr(0,r||i)),e.slice(r?r+1:i));return t.concat(e)}var a,r,o,s=this,c=s.textFormatted(t),d=s.params.tickWidth,l=[];return"[object Array]"===Object.prototype.toString.call(c)?c:((!d||d<=0)&&(d=s.isVertical()?95:s.params.isCategory?Math.ceil(i(e[1])-i(e[0]))-12:110),n(l,c+""))},a.updateTickLength=function(){var t=this;t.tickLength=Math.max(t.innerTickSize,0)+t.tickPadding},a.lineY2=function(t){var e=this,i=e.scale(t)+(e.tickCentered?0:e.tickOffset);return 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a,r,o,s=t.g=i.select(this),c=this.__chart__||e.scale,d=this.__chart__=e.copyScale(),l=e.tickValues?e.tickValues:e.generateTicks(d),u=s.selectAll(".tick").data(l,d),h=u.enter().insert("g",".domain").attr("class","tick").style("opacity",1e-6),g=u.exit().remove(),f=e.transitionise(u).style("opacity",1);n.isCategory?(e.tickOffset=Math.ceil((d(1)-d(0))/2),r=e.tickCentered?0:e.tickOffset,o=e.tickCentered?e.tickOffset:0):e.tickOffset=r=0,h.append("line"),h.append("text"),e.updateRange(),e.updateTickLength(),e.updateTickTextCharSize(s.select(".tick"));var p=f.select("line"),_=f.select("text"),x=u.select("text").selectAll("tspan").data(function(t,i){return e.tspanData(t,i,l,d)});x.enter().append("tspan"),x.exit().remove(),x.text(function(t){return t.splitted});var m=s.selectAll(".domain").data([0]),y=(m.enter().append("path").attr("class","domain"),e.transitionise(m));switch(e.orient){case"bottom":a=e.axisX,p.attr("x1",r).attr("x2",r).attr("y2",function(t,i){return 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i=this.getLabelOptionByAxisId(t),n=i&&"object"===(void 0===i?"undefined":o(i))&&i.position?i.position:e;return{isInner:n.indexOf("inner")>=0,isOuter:n.indexOf("outer")>=0,isLeft:n.indexOf("left")>=0,isCenter:n.indexOf("center")>=0,isRight:n.indexOf("right")>=0,isTop:n.indexOf("top")>=0,isMiddle:n.indexOf("middle")>=0,isBottom:n.indexOf("bottom")>=0}},n.getXAxisLabelPosition=function(){return this.getLabelPosition("x",this.owner.config.axis_rotated?"inner-top":"inner-right")},n.getYAxisLabelPosition=function(){return this.getLabelPosition("y",this.owner.config.axis_rotated?"inner-right":"inner-top")},n.getY2AxisLabelPosition=function(){return this.getLabelPosition("y2",this.owner.config.axis_rotated?"inner-right":"inner-top")},n.getLabelPositionById=function(t){return"y2"===t?this.getY2AxisLabelPosition():"y"===t?this.getYAxisLabelPosition():this.getXAxisLabelPosition()},n.textForXAxisLabel=function(){return this.getLabelText("x")},n.textForYAxisLabel=function(){return this.getLabelText("y")},n.textForY2AxisLabel=function(){return this.getLabelText("y2")},n.xForAxisLabel=function(t,e){var i=this.owner;return t?e.isLeft?0:e.isCenter?i.width/2:i.width:e.isBottom?-i.height:e.isMiddle?-i.height/2:0},n.dxForAxisLabel=function(t,e){return t?e.isLeft?"0.5em":e.isRight?"-0.5em":"0":e.isTop?"-0.5em":e.isBottom?"0.5em":"0"},n.textAnchorForAxisLabel=function(t,e){return t?e.isLeft?"start":e.isCenter?"middle":"end":e.isBottom?"start":e.isMiddle?"middle":"end"},n.xForXAxisLabel=function(){return this.xForAxisLabel(!this.owner.config.axis_rotated,this.getXAxisLabelPosition())},n.xForYAxisLabel=function(){return this.xForAxisLabel(this.owner.config.axis_rotated,this.getYAxisLabelPosition())},n.xForY2AxisLabel=function(){return this.xForAxisLabel(this.owner.config.axis_rotated,this.getY2AxisLabelPosition())},n.dxForXAxisLabel=function(){return this.dxForAxisLabel(!this.owner.config.axis_rotated,this.getXAxisLabelPosition())},n.dxForYAxisLabel=function(){return this.dxForAxisLabel(this.owner.config.axis_rotated,this.getYAxisLabelPosition())},n.dxForY2AxisLabel=function(){return this.dxForAxisLabel(this.owner.config.axis_rotated,this.getY2AxisLabelPosition())},n.dyForXAxisLabel=function(){var t=this.owner.config,e=this.getXAxisLabelPosition();return t.axis_rotated?e.isInner?"1.2em":-25-this.getMaxTickWidth("x"):e.isInner?"-0.5em":t.axis_x_height?t.axis_x_height-10:"3em"},n.dyForYAxisLabel=function(){var t=this.owner,e=this.getYAxisLabelPosition();return t.config.axis_rotated?e.isInner?"-0.5em":"3em":e.isInner?"1.2em":-10-(t.config.axis_y_inner?0:this.getMaxTickWidth("y")+10)},n.dyForY2AxisLabel=function(){var t=this.owner,e=this.getY2AxisLabelPosition();return t.config.axis_rotated?e.isInner?"1.2em":"-2.2em":e.isInner?"-0.5em":15+(t.config.axis_y2_inner?0:this.getMaxTickWidth("y2")+15)},n.textAnchorForXAxisLabel=function(){var t=this.owner;return this.textAnchorForAxisLabel(!t.config.axis_rotated,this.getXAxisLabelPosition())},n.textAnchorForYAxisLabel=function(){var t=this.owner;return this.textAnchorForAxisLabel(t.config.axis_rotated,this.getYAxisLabelPosition())},n.textAnchorForY2AxisLabel=function(){var t=this.owner;return this.textAnchorForAxisLabel(t.config.axis_rotated,this.getY2AxisLabelPosition())},n.getMaxTickWidth=function(t,e){var i,n,a,r,o=this.owner,s=o.config,c=0;return e&&o.currentMaxTickWidths[t]?o.currentMaxTickWidths[t]:(o.svg&&(i=o.filterTargetsToShow(o.data.targets),"y"===t?(n=o.y.copy().domain(o.getYDomain(i,"y")),a=this.getYAxis(n,o.yOrient,s.axis_y_tick_format,o.yAxisTickValues,!1,!0,!0)):"y2"===t?(n=o.y2.copy().domain(o.getYDomain(i,"y2")),a=this.getYAxis(n,o.y2Orient,s.axis_y2_tick_format,o.y2AxisTickValues,!1,!0,!0)):(n=o.x.copy().domain(o.getXDomain(i)),a=this.getXAxis(n,o.xOrient,o.xAxisTickFormat,o.xAxisTickValues,!1,!0,!0),this.updateXAxisTickValues(i,a)),(r=o.d3.select("body").append("div").classed("c3",!0)).append("svg").style("visibility","hidden").style("position","fixed").style("top",0).style("left",0).append("g").call(a).each(function(){o.d3.select(this).selectAll("text").each(function(){var t=this.getBoundingClientRect();c<t.width&&(c=t.width)}),r.remove()})),o.currentMaxTickWidths[t]=c<=0?o.currentMaxTickWidths[t]:c,o.currentMaxTickWidths[t])},n.updateLabels=function(t){var e=this.owner,i=e.main.select("."+r.axisX+" 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e(t)},L.chart={fn:e.prototype,internal:{fn:i.prototype}},P=L.chart.fn,C=L.chart.internal.fn,C.beforeInit=function(){},C.afterInit=function(){},C.init=function(){var t=this,e=t.config;if(t.initParams(),e.data_url)t.convertUrlToData(e.data_url,e.data_mimeType,e.data_headers,e.data_keys,t.initWithData);else if(e.data_json)t.initWithData(t.convertJsonToData(e.data_json,e.data_keys));else if(e.data_rows)t.initWithData(t.convertRowsToData(e.data_rows));else{if(!e.data_columns)throw Error("url or json or rows or columns is required.");t.initWithData(t.convertColumnsToData(e.data_columns))}},C.initParams=function(){var t=this,e=t.d3,i=t.config;t.clipId="c3-"+ +new Date+"-clip",t.clipIdForXAxis=t.clipId+"-xaxis",t.clipIdForYAxis=t.clipId+"-yaxis",t.clipIdForGrid=t.clipId+"-grid",t.clipIdForSubchart=t.clipId+"-subchart",t.clipPath=t.getClipPath(t.clipId),t.clipPathForXAxis=t.getClipPath(t.clipIdForXAxis),t.clipPathForYAxis=t.getClipPath(t.clipIdForYAxis),t.clipPathForGrid=t.getClipPath(t.clipIdForGrid),t.clipPathForSubchart=t.getClipPath(t.clipIdForSubchart),t.dragStart=null,t.dragging=!1,t.flowing=!1,t.cancelClick=!1,t.mouseover=!1,t.transiting=!1,t.color=t.generateColor(),t.levelColor=t.generateLevelColor(),t.dataTimeFormat=i.data_xLocaltime?e.time.format:e.time.format.utc,t.axisTimeFormat=i.axis_x_localtime?e.time.format:e.time.format.utc,t.defaultAxisTimeFormat=t.axisTimeFormat.multi([[".%L",function(t){return t.getMilliseconds()}],[":%S",function(t){return t.getSeconds()}],["%I:%M",function(t){return t.getMinutes()}],["%I %p",function(t){return t.getHours()}],["%-m/%-d",function(t){return t.getDay()&&1!==t.getDate()}],["%-m/%-d",function(t){return 1!==t.getDate()}],["%-m/%-d",function(t){return t.getMonth()}],["%Y/%-m/%-d",function(){return!0}]]),t.hiddenTargetIds=[],t.hiddenLegendIds=[],t.focusedTargetIds=[],t.defocusedTargetIds=[],t.xOrient=i.axis_rotated?"left":"bottom",t.yOrient=i.axis_rotated?i.axis_y_inner?"top":"bottom":i.axis_y_inner?"right":"left",t.y2Orient=i.axis_rotated?i.axis_y2_inner?"bottom":"top":i.axis_y2_inner?"left":"right",t.subXOrient=i.axis_rotated?"left":"bottom",t.isLegendRight="right"===i.legend_position,t.isLegendInset="inset"===i.legend_position,t.isLegendTop="top-left"===i.legend_inset_anchor||"top-right"===i.legend_inset_anchor,t.isLegendLeft="top-left"===i.legend_inset_anchor||"bottom-left"===i.legend_inset_anchor,t.legendStep=0,t.legendItemWidth=0,t.legendItemHeight=0,t.currentMaxTickWidths={x:0,y:0,y2:0},t.rotated_padding_left=30,t.rotated_padding_right=i.axis_rotated&&!i.axis_x_show?0:30,t.rotated_padding_top=5,t.withoutFadeIn={},t.intervalForObserveInserted=void 0,t.axes.subx=e.selectAll([])},C.initChartElements=function(){this.initBar&&this.initBar(),this.initLine&&this.initLine(),this.initArc&&this.initArc(),this.initGauge&&this.initGauge(),this.initText&&this.initText()},C.initWithData=function(t){var e,i,n=this,a=n.d3,o=n.config,s=!0;n.axis=new A(n),n.initPie&&n.initPie(),n.initBrush&&n.initBrush(),n.initZoom&&n.initZoom(),o.bindto?"function"==typeof o.bindto.node?n.selectChart=o.bindto:n.selectChart=a.select(o.bindto):n.selectChart=a.selectAll([]),n.selectChart.empty()&&(n.selectChart=a.select(document.createElement("div")).style("opacity",0),n.observeInserted(n.selectChart),s=!1),n.selectChart.html("").classed("c3",!0),n.data.xs={},n.data.targets=n.convertDataToTargets(t),o.data_filter&&(n.data.targets=n.data.targets.filter(o.data_filter)),o.data_hide&&n.addHiddenTargetIds(!0===o.data_hide?n.mapToIds(n.data.targets):o.data_hide),o.legend_hide&&n.addHiddenLegendIds(!0===o.legend_hide?n.mapToIds(n.data.targets):o.legend_hide),n.hasType("gauge")&&(o.legend_show=!1),n.updateSizes(),n.updateScales(),n.x.domain(a.extent(n.getXDomain(n.data.targets))),n.y.domain(n.getYDomain(n.data.targets,"y")),n.y2.domain(n.getYDomain(n.data.targets,"y2")),n.subX.domain(n.x.domain()),n.subY.domain(n.y.domain()),n.subY2.domain(n.y2.domain()),n.orgXDomain=n.x.domain(),n.brush&&n.brush.scale(n.subX),o.zoom_enabled&&n.zoom.scale(n.x),n.svg=n.selectChart.append("svg").style("overflow","hidden").on("mouseenter",function(){return o.onmouseover.call(n)}).on("mouseleave",function(){return o.onmouseout.call(n)}),n.config.svg_classname&&n.svg.attr("class",n.config.svg_classname),e=n.svg.append("defs"),n.clipChart=n.appendClip(e,n.clipId),n.clipXAxis=n.appendClip(e,n.clipIdForXAxis),n.clipYAxis=n.appendClip(e,n.clipIdForYAxis),n.clipGrid=n.appendClip(e,n.clipIdForGrid),n.clipSubchart=n.appendClip(e,n.clipIdForSubchart),n.updateSvgSize(),i=n.main=n.svg.append("g").attr("transform",n.getTranslate("main")),n.initSubchart&&n.initSubchart(),n.initTooltip&&n.initTooltip(),n.initLegend&&n.initLegend(),n.initTitle&&n.initTitle(),i.append("text").attr("class",r.text+" 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t=this,e=t.config,i=t.legend?t.getLegendHeight():0,n=t.legend?t.getLegendWidth():0,a=t.isLegendRight||t.isLegendInset?0:i,r=t.hasArcType(),o=e.axis_rotated||r?0:t.getHorizontalAxisHeight("x"),s=e.subchart_show&&!r?e.subchart_size_height+o:0;t.currentWidth=t.getCurrentWidth(),t.currentHeight=t.getCurrentHeight(),t.margin=e.axis_rotated?{top:t.getHorizontalAxisHeight("y2")+t.getCurrentPaddingTop(),right:r?0:t.getCurrentPaddingRight(),bottom:t.getHorizontalAxisHeight("y")+a+t.getCurrentPaddingBottom(),left:s+(r?0:t.getCurrentPaddingLeft())}:{top:4+t.getCurrentPaddingTop(),right:r?0:t.getCurrentPaddingRight(),bottom:o+s+a+t.getCurrentPaddingBottom(),left:r?0:t.getCurrentPaddingLeft()},t.margin2=e.axis_rotated?{top:t.margin.top,right:NaN,bottom:20+a,left:t.rotated_padding_left}:{top:t.currentHeight-s-a,right:NaN,bottom:o+a,left:t.margin.left},t.margin3={top:0,right:NaN,bottom:0,left:0},t.updateSizeForLegend&&t.updateSizeForLegend(i,n),t.width=t.currentWidth-t.margin.left-t.margin.right,t.height=t.currentHeight-t.margin.top-t.margin.bottom,t.width<0&&(t.width=0),t.height<0&&(t.height=0),t.width2=e.axis_rotated?t.margin.left-t.rotated_padding_left-t.rotated_padding_right:t.width,t.height2=e.axis_rotated?t.height:t.currentHeight-t.margin2.top-t.margin2.bottom,t.width2<0&&(t.width2=0),t.height2<0&&(t.height2=0),t.arcWidth=t.width-(t.isLegendRight?n+10:0),t.arcHeight=t.height-(t.isLegendRight?0:10),t.hasType("gauge")&&!e.gauge_fullCircle&&(t.arcHeight+=t.height-t.getGaugeLabelHeight()),t.updateRadius&&t.updateRadius(),t.isLegendRight&&r&&(t.margin3.left=t.arcWidth/2+1.1*t.radiusExpanded)},C.updateTargets=function(t){var e=this;e.updateTargetsForText(t),e.updateTargetsForBar(t),e.updateTargetsForLine(t),e.hasArcType()&&e.updateTargetsForArc&&e.updateTargetsForArc(t),e.updateTargetsForSubchart&&e.updateTargetsForSubchart(t),e.showTargets()},C.showTargets=function(){var t=this;t.svg.selectAll("."+r.target).filter(function(e){return t.isTargetToShow(e.id)}).transition().duration(t.config.transition_duration).style("opacity",1)},C.redraw=function(t,e){var i,n,a,o,s,c,d,l,u,h,g,f,p,_,x,m,y,S,v,b,T,A,P,C,L,V,G,E,O,I=this,R=I.main,k=I.d3,D=I.config,F=I.getShapeIndices(I.isAreaType),X=I.getShapeIndices(I.isBarType),M=I.getShapeIndices(I.isLineType),z=I.hasArcType(),H=I.filterTargetsToShow(I.data.targets),B=I.xv.bind(I);if(t=t||{},i=w(t,"withY",!0),n=w(t,"withSubchart",!0),a=w(t,"withTransition",!0),c=w(t,"withTransform",!1),d=w(t,"withUpdateXDomain",!1),l=w(t,"withUpdateOrgXDomain",!1),u=w(t,"withTrimXDomain",!0),p=w(t,"withUpdateXAxis",d),h=w(t,"withLegend",!1),g=w(t,"withEventRect",!0),f=w(t,"withDimension",!0),o=w(t,"withTransitionForExit",a),s=w(t,"withTransitionForAxis",a),v=a?D.transition_duration:0,b=o?v:0,T=s?v:0,e=e||I.axis.generateTransitions(T),h&&D.legend_show?I.updateLegend(I.mapToIds(I.data.targets),t,e):f&&I.updateDimension(!0),I.isCategorized()&&0===H.length&&I.x.domain([0,I.axes.x.selectAll(".tick").size()]),H.length?(I.updateXDomain(H,d,l,u),D.axis_x_tick_values||(C=I.axis.updateXAxisTickValues(H))):(I.xAxis.tickValues([]),I.subXAxis.tickValues([])),D.zoom_rescale&&!t.flow&&(G=I.x.orgDomain()),I.y.domain(I.getYDomain(H,"y",G)),I.y2.domain(I.getYDomain(H,"y2",G)),!D.axis_y_tick_values&&D.axis_y_tick_count&&I.yAxis.tickValues(I.axis.generateTickValues(I.y.domain(),D.axis_y_tick_count)),!D.axis_y2_tick_values&&D.axis_y2_tick_count&&I.y2Axis.tickValues(I.axis.generateTickValues(I.y2.domain(),D.axis_y2_tick_count)),I.axis.redraw(e,z),I.axis.updateLabels(a),(d||p)&&H.length)if(D.axis_x_tick_culling&&C){for(L=1;L<C.length;L++)if(C.length/L<D.axis_x_tick_culling_max){V=L;break}I.svg.selectAll("."+r.axisX+" 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0,y=I.generateXYForText(F,X,M,!0),S=I.generateXYForText(F,X,M,!1),i&&(I.subY.domain(I.getYDomain(H,"y")),I.subY2.domain(I.getYDomain(H,"y2"))),I.updateXgridFocus(),R.select("text."+r.text+"."+r.empty).attr("x",I.width/2).attr("y",I.height/2).text(D.data_empty_label_text).transition().style("opacity",H.length?0:1),I.updateGrid(v),I.updateRegion(v),I.updateBar(b),I.updateLine(b),I.updateArea(b),I.updateCircle(),I.hasDataLabel()&&I.updateText(b),I.redrawTitle&&I.redrawTitle(),I.redrawArc&&I.redrawArc(v,b,c),I.redrawSubchart&&I.redrawSubchart(n,e,v,b,F,X,M),R.selectAll("."+r.selectedCircles).filter(I.isBarType.bind(I)).selectAll("circle").remove(),D.interaction_enabled&&!t.flow&&g&&(I.redrawEventRect(),I.updateZoom&&I.updateZoom()),I.updateCircleY(),E=(I.config.axis_rotated?I.circleY:I.circleX).bind(I),O=(I.config.axis_rotated?I.circleX:I.circleY).bind(I),t.flow&&(P=I.generateFlow({targets:H,flow:t.flow,duration:t.flow.duration,drawBar:x,drawLine:m,drawArea:_,cx:E,cy:O,xv:B,xForText:y,yForText:S})),(v||P)&&I.isTabVisible()?k.transition().duration(v).each(function(){var e=[];[I.redrawBar(x,!0),I.redrawLine(m,!0),I.redrawArea(_,!0),I.redrawCircle(E,O,!0),I.redrawText(y,S,t.flow,!0),I.redrawRegion(!0),I.redrawGrid(!0)].forEach(function(t){t.forEach(function(t){e.push(t)})}),A=I.generateWait(),e.forEach(function(t){A.add(t)})}).call(A,function(){P&&P(),D.onrendered&&D.onrendered.call(I)}):(I.redrawBar(x),I.redrawLine(m),I.redrawArea(_),I.redrawCircle(E,O),I.redrawText(y,S,t.flow),I.redrawRegion(),I.redrawGrid(),D.onrendered&&D.onrendered.call(I)),I.mapToIds(I.data.targets).forEach(function(t){I.withoutFadeIn[t]=!0})},C.updateAndRedraw=function(t){var e,i=this,n=i.config;(t=t||{}).withTransition=w(t,"withTransition",!0),t.withTransform=w(t,"withTransform",!1),t.withLegend=w(t,"withLegend",!1),t.withUpdateXDomain=!0,t.withUpdateOrgXDomain=!0,t.withTransitionForExit=!1,t.withTransitionForTransform=w(t,"withTransitionForTransform",t.withTransition),i.updateSizes(),t.withLegend&&n.legend_show||(e=i.axis.generateTransitions(t.withTransitionForAxis?n.transition_duration:0),i.updateScales(),i.updateSvgSize(),i.transformAll(t.withTransitionForTransform,e)),i.redraw(t,e)},C.redrawWithoutRescale=function(){this.redraw({withY:!1,withSubchart:!1,withEventRect:!1,withTransitionForAxis:!1})},C.isTimeSeries=function(){return"timeseries"===this.config.axis_x_type},C.isCategorized=function(){return this.config.axis_x_type.indexOf("categor")>=0},C.isCustomX=function(){var t=this,e=t.config;return!t.isTimeSeries()&&(e.data_x||S(e.data_xs))},C.isTimeSeriesY=function(){return"timeseries"===this.config.axis_y_type},C.getTranslate=function(t){var e,i,n=this,a=n.config;return"main"===t?(e=x(n.margin.left),i=x(n.margin.top)):"context"===t?(e=x(n.margin2.left),i=x(n.margin2.top)):"legend"===t?(e=n.margin3.left,i=n.margin3.top):"x"===t?(e=0,i=a.axis_rotated?0:n.height):"y"===t?(e=0,i=a.axis_rotated?n.height:0):"y2"===t?(e=a.axis_rotated?0:n.width,i=a.axis_rotated?1:0):"subx"===t?(e=0,i=a.axis_rotated?0:n.height2):"arc"===t&&(e=n.arcWidth/2,i=n.arcHeight/2),"translate("+e+","+i+")"},C.initialOpacity=function(t){return null!==t.value&&this.withoutFadeIn[t.id]?1:0},C.initialOpacityForCircle=function(t){return null!==t.value&&this.withoutFadeIn[t.id]?this.opacityForCircle(t):0},C.opacityForCircle=function(t){var e=(u(this.config.point_show)?this.config.point_show(t):this.config.point_show)?1:0;return l(t.value)?this.isScatterType(t)?.5:e:0},C.opacityForText=function(){return this.hasDataLabel()?1:0},C.xx=function(t){return t?this.x(t.x):null},C.xv=function(t){var e=this,i=t.value;return e.isTimeSeries()?i=e.parseDate(t.value):e.isCategorized()&&"string"==typeof t.value&&(i=e.config.axis_x_categories.indexOf(t.value)),Math.ceil(e.x(i))},C.yv=function(t){var e=this,i=t.axis&&"y2"===t.axis?e.y2:e.y;return Math.ceil(i(t.value))},C.subxx=function(t){return t?this.subX(t.x):null},C.transformMain=function(t,e){var i,n,a,o=this;e&&e.axisX?i=e.axisX:(i=o.main.select("."+r.axisX),t&&(i=i.transition())),e&&e.axisY?n=e.axisY:(n=o.main.select("."+r.axisY),t&&(n=n.transition())),e&&e.axisY2?a=e.axisY2:(a=o.main.select("."+r.axisY2),t&&(a=a.transition())),(t?o.main.transition():o.main).attr("transform",o.getTranslate("main")),i.attr("transform",o.getTranslate("x")),n.attr("transform",o.getTranslate("y")),a.attr("transform",o.getTranslate("y2")),o.main.select("."+r.chartArcs).attr("transform",o.getTranslate("arc"))},C.transformAll=function(t,e){var i=this;i.transformMain(t,e),i.config.subchart_show&&i.transformContext(t,e),i.legend&&i.transformLegend(t)},C.updateSvgSize=function(){var t=this,e=t.svg.select(".c3-brush 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this._y2},set:function(t){this._y2=t,this._segmentChanged()},enumerable:!0}),window.SVGPathSegCurvetoQuadraticSmoothAbs=function(t,e,i){window.SVGPathSeg.call(this,window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS,"T",t),this._x=e,this._y=i},window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype=Object.create(window.SVGPathSeg.prototype),window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype.toString=function(){return"[object SVGPathSegCurvetoQuadraticSmoothAbs]"},window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype._asPathString=function(){return this.pathSegTypeAsLetter+" "+this._x+" "+this._y},window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype.clone=function(){return new window.SVGPathSegCurvetoQuadraticSmoothAbs(void 0,this._x,this._y)},Object.defineProperty(window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype,"x",{get:function(){return 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window.SVGPathSegLinetoHorizontalAbs(void 0,t)},window.SVGPathElement.prototype.createSVGPathSegLinetoHorizontalRel=function(t){return new window.SVGPathSegLinetoHorizontalRel(void 0,t)},window.SVGPathElement.prototype.createSVGPathSegLinetoVerticalAbs=function(t){return new window.SVGPathSegLinetoVerticalAbs(void 0,t)},window.SVGPathElement.prototype.createSVGPathSegLinetoVerticalRel=function(t){return new window.SVGPathSegLinetoVerticalRel(void 0,t)},window.SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothAbs=function(t,e,i,n){return new window.SVGPathSegCurvetoCubicSmoothAbs(void 0,t,e,i,n)},window.SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothRel=function(t,e,i,n){return new window.SVGPathSegCurvetoCubicSmoothRel(void 0,t,e,i,n)},window.SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothAbs=function(t,e){return new window.SVGPathSegCurvetoQuadraticSmoothAbs(void 0,t,e)},window.SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothRel=function(t,e){return new window.SVGPathSegCurvetoQuadraticSmoothRel(void 0,t,e)},"getPathSegAtLength"in window.SVGPathElement.prototype||(window.SVGPathElement.prototype.getPathSegAtLength=function(t){if(void 0===t||!isFinite(t))throw"Invalid arguments.";var e=document.createElementNS("http://www.w3.org/2000/svg","path");e.setAttribute("d",this.getAttribute("d"));var i=e.pathSegList.numberOfItems-1;if(i<=0)return 0;do{if(e.pathSegList.removeItem(i),t>e.getTotalLength())break;i--}while(i>0);return i})),"SVGPathSegList"in window||(window.SVGPathSegList=function(t){this._pathElement=t,this._list=this._parsePath(this._pathElement.getAttribute("d")),this._mutationObserverConfig={attributes:!0,attributeFilter:["d"]},this._pathElementMutationObserver=new MutationObserver(this._updateListFromPathMutations.bind(this)),this._pathElementMutationObserver.observe(this._pathElement,this._mutationObserverConfig)},window.SVGPathSegList.prototype.classname="SVGPathSegList",Object.defineProperty(window.SVGPathSegList.prototype,"numberOfItems",{get:function(){return this._checkPathSynchronizedToList(),this._list.length},enumerable:!0}),Object.defineProperty(window.SVGPathElement.prototype,"pathSegList",{get:function(){return this._pathSegList||(this._pathSegList=new window.SVGPathSegList(this)),this._pathSegList},enumerable:!0}),Object.defineProperty(window.SVGPathElement.prototype,"normalizedPathSegList",{get:function(){return this.pathSegList},enumerable:!0}),Object.defineProperty(window.SVGPathElement.prototype,"animatedPathSegList",{get:function(){return this.pathSegList},enumerable:!0}),Object.defineProperty(window.SVGPathElement.prototype,"animatedNormalizedPathSegList",{get:function(){return this.pathSegList},enumerable:!0}),window.SVGPathSegList.prototype._checkPathSynchronizedToList=function(){this._updateListFromPathMutations(this._pathElementMutationObserver.takeRecords())},window.SVGPathSegList.prototype._updateListFromPathMutations=function(t){if(this._pathElement){var e=!1;t.forEach(function(t){"d"==t.attributeName&&(e=!0)}),e&&(this._list=this._parsePath(this._pathElement.getAttribute("d")))}},window.SVGPathSegList.prototype._writeListToPath=function(){this._pathElementMutationObserver.disconnect(),this._pathElement.setAttribute("d",window.SVGPathSegList._pathSegArrayAsString(this._list)),this._pathElementMutationObserver.observe(this._pathElement,this._mutationObserverConfig)},window.SVGPathSegList.prototype.segmentChanged=function(t){this._writeListToPath()},window.SVGPathSegList.prototype.clear=function(){this._checkPathSynchronizedToList(),this._list.forEach(function(t){t._owningPathSegList=null}),this._list=[],this._writeListToPath()},window.SVGPathSegList.prototype.initialize=function(t){return this._checkPathSynchronizedToList(),this._list=[t],t._owningPathSegList=this,this._writeListToPath(),t},window.SVGPathSegList.prototype._checkValidIndex=function(t){if(isNaN(t)||t<0||t>=this.numberOfItems)throw"INDEX_SIZE_ERR"},window.SVGPathSegList.prototype.getItem=function(t){return this._checkPathSynchronizedToList(),this._checkValidIndex(t),this._list[t]},window.SVGPathSegList.prototype.insertItemBefore=function(t,e){return this._checkPathSynchronizedToList(),e>this.numberOfItems&&(e=this.numberOfItems),t._owningPathSegList&&(t=t.clone()),this._list.splice(e,0,t),t._owningPathSegList=this,this._writeListToPath(),t},window.SVGPathSegList.prototype.replaceItem=function(t,e){return this._checkPathSynchronizedToList(),t._owningPathSegList&&(t=t.clone()),this._checkValidIndex(e),this._list[e]=t,t._owningPathSegList=this,this._writeListToPath(),t},window.SVGPathSegList.prototype.removeItem=function(t){this._checkPathSynchronizedToList(),this._checkValidIndex(t);var e=this._list[t];return this._list.splice(t,1),this._writeListToPath(),e},window.SVGPathSegList.prototype.appendItem=function(t){return this._checkPathSynchronizedToList(),t._owningPathSegList&&(t=t.clone()),this._list.push(t),t._owningPathSegList=this,this._writeListToPath(),t},window.SVGPathSegList._pathSegArrayAsString=function(t){var e="",i=!0;return t.forEach(function(t){i?(i=!1,e+=t._asPathString()):e+=" "+t._asPathString()}),e},window.SVGPathSegList.prototype._parsePath=function(t){if(!t||0==t.length)return[];var e=this,i=function(){this.pathSegList=[]};i.prototype.appendSegment=function(t){this.pathSegList.push(t)};var n=function(t){this._string=t,this._currentIndex=0,this._endIndex=this._string.length,this._previousCommand=window.SVGPathSeg.PATHSEG_UNKNOWN,this._skipOptionalSpaces()};n.prototype._isCurrentSpace=function(){var t=this._string[this._currentIndex];return t<=" "&&(" 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window.SVGPathSeg.PATHSEG_MOVETO_REL;case"L":return window.SVGPathSeg.PATHSEG_LINETO_ABS;case"l":return window.SVGPathSeg.PATHSEG_LINETO_REL;case"C":return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;case"c":return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;case"Q":return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;case"q":return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;case"A":return window.SVGPathSeg.PATHSEG_ARC_ABS;case"a":return window.SVGPathSeg.PATHSEG_ARC_REL;case"H":return window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;case"h":return window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;case"V":return window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;case"v":return window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;case"S":return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;case"s":return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;case"T":return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;case"t":return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;default:return window.SVGPathSeg.PATHSEG_UNKNOWN}},n.prototype._nextCommandHelper=function(t,e){return("+"==t||"-"==t||"."==t||t>="0"&&t<="9")&&e!=window.SVGPathSeg.PATHSEG_CLOSEPATH?e==window.SVGPathSeg.PATHSEG_MOVETO_ABS?window.SVGPathSeg.PATHSEG_LINETO_ABS:e==window.SVGPathSeg.PATHSEG_MOVETO_REL?window.SVGPathSeg.PATHSEG_LINETO_REL:e:window.SVGPathSeg.PATHSEG_UNKNOWN},n.prototype.initialCommandIsMoveTo=function(){if(!this.hasMoreData())return!0;var t=this.peekSegmentType();return t==window.SVGPathSeg.PATHSEG_MOVETO_ABS||t==window.SVGPathSeg.PATHSEG_MOVETO_REL},n.prototype._parseNumber=function(){var t=0,e=0,i=1,n=0,a=1,r=1,o=this._currentIndex;if(this._skipOptionalSpaces(),this._currentIndex<this._endIndex&&"+"==this._string.charAt(this._currentIndex)?this._currentIndex++:this._currentIndex<this._endIndex&&"-"==this._string.charAt(this._currentIndex)&&(this._currentIndex++,a=-1),!(this._currentIndex==this._endIndex||(this._string.charAt(this._currentIndex)<"0"||this._string.charAt(this._currentIndex)>"9")&&"."!=this._string.charAt(this._currentIndex))){for(var s=this._currentIndex;this._currentIndex<this._endIndex&&this._string.charAt(this._currentIndex)>="0"&&this._string.charAt(this._currentIndex)<="9";)this._currentIndex++;if(this._currentIndex!=s)for(var c=this._currentIndex-1,d=1;c>=s;)e+=d*(this._string.charAt(c--)-"0"),d*=10;if(this._currentIndex<this._endIndex&&"."==this._string.charAt(this._currentIndex)){if(++this._currentIndex>=this._endIndex||this._string.charAt(this._currentIndex)<"0"||this._string.charAt(this._currentIndex)>"9")return;for(;this._currentIndex<this._endIndex&&this._string.charAt(this._currentIndex)>="0"&&this._string.charAt(this._currentIndex)<="9";)i*=10,n+=(this._string.charAt(this._currentIndex)-"0")/i,this._currentIndex+=1}if(this._currentIndex!=o&&this._currentIndex+1<this._endIndex&&("e"==this._string.charAt(this._currentIndex)||"E"==this._string.charAt(this._currentIndex))&&"x"!=this._string.charAt(this._currentIndex+1)&&"m"!=this._string.charAt(this._currentIndex+1)){if(this._currentIndex++,"+"==this._string.charAt(this._currentIndex)?this._currentIndex++:"-"==this._string.charAt(this._currentIndex)&&(this._currentIndex++,r=-1),this._currentIndex>=this._endIndex||this._string.charAt(this._currentIndex)<"0"||this._string.charAt(this._currentIndex)>"9")return;for(;this._currentIndex<this._endIndex&&this._string.charAt(this._currentIndex)>="0"&&this._string.charAt(this._currentIndex)<="9";)t*=10,t+=this._string.charAt(this._currentIndex)-"0",this._currentIndex++}var l=e+n;if(l*=a,t&&(l*=Math.pow(10,r*t)),o!=this._currentIndex)return this._skipOptionalSpacesOrDelimiter(),l}},n.prototype._parseArcFlag=function(){if(!(this._currentIndex>=this._endIndex)){var t=!1,e=this._string.charAt(this._currentIndex++);if("0"==e)t=!1;else{if("1"!=e)return;t=!0}return this._skipOptionalSpacesOrDelimiter(),t}},n.prototype.parseSegment=function(){var t=this._string[this._currentIndex],i=this._pathSegTypeFromChar(t);if(i==window.SVGPathSeg.PATHSEG_UNKNOWN){if(this._previousCommand==window.SVGPathSeg.PATHSEG_UNKNOWN)return null;if((i=this._nextCommandHelper(t,this._previousCommand))==window.SVGPathSeg.PATHSEG_UNKNOWN)return null}else this._currentIndex++;switch(this._previousCommand=i,i){case window.SVGPathSeg.PATHSEG_MOVETO_REL:return new window.SVGPathSegMovetoRel(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_MOVETO_ABS:return new window.SVGPathSegMovetoAbs(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_REL:return new window.SVGPathSegLinetoRel(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_ABS:return new window.SVGPathSegLinetoAbs(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL:return new window.SVGPathSegLinetoHorizontalRel(e,this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS:return new window.SVGPathSegLinetoHorizontalAbs(e,this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL:return new window.SVGPathSegLinetoVerticalRel(e,this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS:return new window.SVGPathSegLinetoVerticalAbs(e,this._parseNumber());case window.SVGPathSeg.PATHSEG_CLOSEPATH:return this._skipOptionalSpaces(),new window.SVGPathSegClosePath(e);case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL:return n={x1:this._parseNumber(),y1:this._parseNumber(),x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoCubicRel(e,n.x,n.y,n.x1,n.y1,n.x2,n.y2);case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:return n={x1:this._parseNumber(),y1:this._parseNumber(),x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoCubicAbs(e,n.x,n.y,n.x1,n.y1,n.x2,n.y2);case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:return n={x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoCubicSmoothRel(e,n.x,n.y,n.x2,n.y2);case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:return n={x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoCubicSmoothAbs(e,n.x,n.y,n.x2,n.y2);case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL:return n={x1:this._parseNumber(),y1:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoQuadraticRel(e,n.x,n.y,n.x1,n.y1);case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:return n={x1:this._parseNumber(),y1:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoQuadraticAbs(e,n.x,n.y,n.x1,n.y1);case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:return new window.SVGPathSegCurvetoQuadraticSmoothRel(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:return new window.SVGPathSegCurvetoQuadraticSmoothAbs(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_ARC_REL:return n={x1:this._parseNumber(),y1:this._parseNumber(),arcAngle:this._parseNumber(),arcLarge:this._parseArcFlag(),arcSweep:this._parseArcFlag(),x:this._parseNumber(),y:this._parseNumber()},new 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e,i,n=this.internal;t.mouse&&(i=t.mouse),t.data?n.isMultipleX()?(i=[n.x(t.data.x),n.getYScale(t.data.id)(t.data.value)],e=null):e=l(t.data.index)?t.data.index:n.getIndexByX(t.data.x):void 0!==t.x?e=n.getIndexByX(t.x):void 0!==t.index&&(e=t.index),n.dispatchEvent("mouseover",e,i),n.dispatchEvent("mousemove",e,i),n.config.tooltip_onshow.call(n,t.data)},P.tooltip.hide=function(){this.internal.dispatchEvent("mouseout",0),this.internal.config.tooltip_onhide.call(this)},P.transform=function(t,e){var i=this.internal,n=["pie","donut"].indexOf(t)>=0?{withTransform:!0}:null;i.transformTo(e,t,n)},C.transformTo=function(t,e,i){var n=this,a=!n.hasArcType(),r=i||{withTransitionForAxis:a};r.withTransitionForTransform=!1,n.transiting=!1,n.setTargetType(t,e),n.updateTargets(n.data.targets),n.updateAndRedraw(r)},P.x=function(t){var e=this.internal;return arguments.length&&(e.updateTargetX(e.data.targets,t),e.redraw({withUpdateOrgXDomain:!0,withUpdateXDomain:!0})),e.data.xs},P.xs=function(t){var 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c&&!o.hasType("gauge")&&(e=this.svgArc.centroid(c),i=isNaN(e[0])?0:e[0],n=isNaN(e[1])?0:e[1],a=Math.sqrt(i*i+n*n),d="translate("+i*(r=o.hasType("donut")&&s.donut_label_ratio?u(s.donut_label_ratio)?s.donut_label_ratio(t,o.radius,a):s.donut_label_ratio:o.hasType("pie")&&s.pie_label_ratio?u(s.pie_label_ratio)?s.pie_label_ratio(t,o.radius,a):s.pie_label_ratio:o.radius&&a?(36/o.radius>.375?1.175-36/o.radius:.8)*o.radius/a:0)+","+n*r+")"),d},C.getArcRatio=function(t){var e=this,i=e.config,n=Math.PI*(e.hasType("gauge")&&!i.gauge_fullCircle?1:2);return t?(t.endAngle-t.startAngle)/n:null},C.convertToArcData=function(t){return this.addName({id:t.data.id,value:t.value,ratio:this.getArcRatio(t),index:t.index})},C.textForArcLabel=function(t){var e,i,n,a,r,o=this;return o.shouldShowArcLabel()?(e=o.updateAngle(t),i=e?e.value:null,n=o.getArcRatio(e),a=t.data.id,o.hasType("gauge")||o.meetsArcLabelThreshold(n)?(r=o.getArcLabelFormat(),r?r(i,n,a):o.defaultArcValueFormat(i,n)):""):""},C.textForGaugeMinMax=function(t,e){var i=this.getGaugeLabelExtents();return i?i(t,e):t},C.expandArc=function(t){var e,i=this;i.transiting?e=window.setInterval(function(){i.transiting||(window.clearInterval(e),i.legend.selectAll(".c3-legend-item-focused").size()>0&&i.expandArc(t))},10):(t=i.mapToTargetIds(t),i.svg.selectAll(i.selectorTargets(t,"."+r.chartArc)).each(function(t){i.shouldExpand(t.data.id)&&i.d3.select(this).selectAll("path").transition().duration(i.expandDuration(t.data.id)).attr("d",i.svgArcExpanded).transition().duration(2*i.expandDuration(t.data.id)).attr("d",i.svgArcExpandedSub).each(function(t){i.isDonutType(t.data)})}))},C.unexpandArc=function(t){var e=this;e.transiting||(t=e.mapToTargetIds(t),e.svg.selectAll(e.selectorTargets(t,"."+r.chartArc)).selectAll("path").transition().duration(function(t){return e.expandDuration(t.data.id)}).attr("d",e.svgArc),e.svg.selectAll("."+r.arc))},C.expandDuration=function(t){var e=this,i=e.config;return e.isDonutType(t)?i.donut_expand_duration:e.isGaugeType(t)?i.gauge_expand_duration:e.isPieType(t)?i.pie_expand_duration:50},C.shouldExpand=function(t){var e=this,i=e.config;return e.isDonutType(t)&&i.donut_expand||e.isGaugeType(t)&&i.gauge_expand||e.isPieType(t)&&i.pie_expand},C.shouldShowArcLabel=function(){var t=this,e=t.config,i=!0;return t.hasType("donut")?i=e.donut_label_show:t.hasType("pie")&&(i=e.pie_label_show),i},C.meetsArcLabelThreshold=function(t){var e=this,i=e.config;return t>=(e.hasType("donut")?i.donut_label_threshold:i.pie_label_threshold)},C.getArcLabelFormat=function(){var t=this,e=t.config,i=e.pie_label_format;return t.hasType("gauge")?i=e.gauge_label_format:t.hasType("donut")&&(i=e.donut_label_format),i},C.getGaugeLabelExtents=function(){return this.config.gauge_label_extents},C.getArcTitle=function(){var t=this;return t.hasType("donut")?t.config.donut_title:""},C.updateTargetsForArc=function(t){var e,i=this,n=i.main,a=i.classChartArc.bind(i),o=i.classArcs.bind(i),s=i.classFocus.bind(i);(e=n.select("."+r.chartArcs).selectAll("."+r.chartArc).data(i.pie(t)).attr("class",function(t){return a(t)+s(t.data)}).enter().append("g").attr("class",a)).append("g").attr("class",o),e.append("text").attr("dy",i.hasType("gauge")?"-.1em":".35em").style("opacity",0).style("text-anchor","middle").style("pointer-events","none")},C.initArc=function(){var t=this;t.arcs=t.main.select("."+r.chart).append("g").attr("class",r.chartArcs).attr("transform",t.getTranslate("arc")),t.arcs.append("text").attr("class",r.chartArcsTitle).style("text-anchor","middle").text(t.getArcTitle())},C.redrawArc=function(t,e,i){var n,a=this,o=a.d3,s=a.config,c=a.main;(n=c.selectAll("."+r.arcs).selectAll("."+r.arc).data(a.arcData.bind(a))).enter().append("path").attr("class",a.classArc.bind(a)).style("fill",function(t){return a.color(t.data)}).style("cursor",function(t){return s.interaction_enabled&&s.data_selection_isselectable(t)?"pointer":null}).each(function(t){a.isGaugeType(t.data)&&(t.startAngle=t.endAngle=s.gauge_startingAngle),this._current=t}),n.attr("transform",function(t){return!a.isGaugeType(t.data)&&i?"scale(0)":""}).on("mouseover",s.interaction_enabled?function(t){var e,i;a.transiting||(e=a.updateAngle(t))&&(i=a.convertToArcData(e),a.expandArc(e.data.id),a.api.focus(e.data.id),a.toggleFocusLegend(e.data.id,!0),a.config.data_onmouseover(i,this))}:null).on("mousemove",s.interaction_enabled?function(t){var e,i=a.updateAngle(t);i&&(e=[a.convertToArcData(i)],a.showTooltip(e,this))}:null).on("mouseout",s.interaction_enabled?function(t){var e,i;a.transiting||(e=a.updateAngle(t))&&(i=a.convertToArcData(e),a.unexpandArc(e.data.id),a.api.revert(),a.revertLegend(),a.hideTooltip(),a.config.data_onmouseout(i,this))}:null).on("click",s.interaction_enabled?function(t,e){var i,n=a.updateAngle(t);n&&(i=a.convertToArcData(n),a.toggleShape&&a.toggleShape(this,i,e),a.config.data_onclick.call(a.api,i,this))}:null).each(function(){a.transiting=!0}).transition().duration(t).attrTween("d",function(t){var e,i=a.updateAngle(t);return i?(isNaN(this._current.startAngle)&&(this._current.startAngle=0),isNaN(this._current.endAngle)&&(this._current.endAngle=this._current.startAngle),e=o.interpolate(this._current,i),this._current=e(0),function(i){var n=e(i);return n.data=t.data,a.getArc(n,!0)}):function(){return"M 0 0"}}).attr("transform",i?"scale(1)":"").style("fill",function(t){return a.levelColor?a.levelColor(t.data.values[0].value):a.color(t.data.id)}).call(a.endall,function(){a.transiting=!1}),n.exit().transition().duration(e).style("opacity",0).remove(),c.selectAll("."+r.chartArc).select("text").style("opacity",0).attr("class",function(t){return a.isGaugeType(t.data)?r.gaugeValue:""}).text(a.textForArcLabel.bind(a)).attr("transform",a.transformForArcLabel.bind(a)).style("font-size",function(t){return a.isGaugeType(t.data)?Math.round(a.radius/5)+"px":""}).transition().duration(t).style("opacity",function(t){return a.isTargetToShow(t.data.id)&&a.isArcType(t.data)?1:0}),c.select("."+r.chartArcsTitle).style("opacity",a.hasType("donut")||a.hasType("gauge")?1:0),a.hasType("gauge")&&(a.arcs.select("."+r.chartArcsBackground).attr("d",function(){var t={data:[{value:s.gauge_max}],startAngle:s.gauge_startingAngle,endAngle:-1*s.gauge_startingAngle};return a.getArc(t,!0,!0)}),a.arcs.select("."+r.chartArcsGaugeUnit).attr("dy",".75em").text(s.gauge_label_show?s.gauge_units:""),a.arcs.select("."+r.chartArcsGaugeMin).attr("dx",-1*(a.innerRadius+(a.radius-a.innerRadius)/(s.gauge_fullCircle?1:2))+"px").attr("dy","1.2em").text(s.gauge_label_show?a.textForGaugeMinMax(s.gauge_min,!1):""),a.arcs.select("."+r.chartArcsGaugeMax).attr("dx",a.innerRadius+(a.radius-a.innerRadius)/(s.gauge_fullCircle?1:2)+"px").attr("dy","1.2em").text(s.gauge_label_show?a.textForGaugeMinMax(s.gauge_max,!0):""))},C.initGauge=function(){var t=this.arcs;this.hasType("gauge")&&(t.append("path").attr("class",r.chartArcsBackground),t.append("text").attr("class",r.chartArcsGaugeUnit).style("text-anchor","middle").style("pointer-events","none"),t.append("text").attr("class",r.chartArcsGaugeMin).style("text-anchor","middle").style("pointer-events","none"),t.append("text").attr("class",r.chartArcsGaugeMax).style("text-anchor","middle").style("pointer-events","none"))},C.getGaugeLabelHeight=function(){return this.config.gauge_label_show?20:0},C.hasCaches=function(t){for(var e=0;e<t.length;e++)if(!(t[e]in this.cache))return!1;return!0},C.addCache=function(t,e){this.cache[t]=this.cloneTarget(e)},C.getCaches=function(t){var e,i=[];for(e=0;e<t.length;e++)t[e]in this.cache&&i.push(this.cloneTarget(this.cache[t[e]]));return i},C.categoryName=function(t){var e=this.config;return t<e.axis_x_categories.length?e.axis_x_categories[t]:t},C.generateClass=function(t,e){return" "+t+" 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this.classShapes(t.data)+this.generateClass(r.arcs,t.data.id)},C.classArea=function(t){return this.classShape(t)+this.generateClass(r.area,t.id)},C.classAreas=function(t){return this.classShapes(t)+this.generateClass(r.areas,t.id)},C.classRegion=function(t,e){return this.generateClass(r.region,e)+" "+("class"in t?t.class:"")},C.classEvent=function(t){return this.generateClass(r.eventRect,t.index)},C.classTarget=function(t){var e=this,i=e.config.data_classes[t],n="";return i&&(n=" "+r.target+"-"+i),e.generateClass(r.target,t)+n},C.classFocus=function(t){return this.classFocused(t)+this.classDefocused(t)},C.classFocused=function(t){return" "+(this.focusedTargetIds.indexOf(t.id)>=0?r.focused:"")},C.classDefocused=function(t){return" "+(this.defocusedTargetIds.indexOf(t.id)>=0?r.defocused:"")},C.classChartText=function(t){return r.chartText+this.classTarget(t.id)},C.classChartLine=function(t){return r.chartLine+this.classTarget(t.id)},C.classChartBar=function(t){return r.chartBar+this.classTarget(t.id)},C.classChartArc=function(t){return r.chartArc+this.classTarget(t.data.id)},C.getTargetSelectorSuffix=function(t){return t||0===t?("-"+t).replace(/[\s?!@#$%^&*()_=+,.<>'":;\[\]\/|~`{}\\]/g,"-"):""},C.selectorTarget=function(t,e){return(e||"")+"."+r.target+this.getTargetSelectorSuffix(t)},C.selectorTargets=function(t,e){var i=this;return t=t||[],t.length?t.map(function(t){return i.selectorTarget(t,e)}):null},C.selectorLegend=function(t){return"."+r.legendItem+this.getTargetSelectorSuffix(t)},C.selectorLegends=function(t){var e=this;return t&&t.length?t.map(function(t){return e.selectorLegend(t)}):null},C.getClipPath=function(t){return"url("+(window.navigator.appVersion.toLowerCase().indexOf("msie 9.")>=0?"":document.URL.split("#")[0])+"#"+t+")"},C.appendClip=function(t,e){return t.append("clipPath").attr("id",e).append("rect")},C.getAxisClipX=function(t){var e=Math.max(30,this.margin.left);return t?-(1+e):-(e-1)},C.getAxisClipY=function(t){return t?-20:-this.margin.top},C.getXAxisClipX=function(){var t=this;return t.getAxisClipX(!t.config.axis_rotated)},C.getXAxisClipY=function(){var t=this;return t.getAxisClipY(!t.config.axis_rotated)},C.getYAxisClipX=function(){var t=this;return t.config.axis_y_inner?-1:t.getAxisClipX(t.config.axis_rotated)},C.getYAxisClipY=function(){var t=this;return t.getAxisClipY(t.config.axis_rotated)},C.getAxisClipWidth=function(t){var e=this,i=Math.max(30,e.margin.left),n=Math.max(30,e.margin.right);return t?e.width+2+i+n:e.margin.left+20},C.getAxisClipHeight=function(t){return(t?this.margin.bottom:this.margin.top+this.height)+20},C.getXAxisClipWidth=function(){var t=this;return t.getAxisClipWidth(!t.config.axis_rotated)},C.getXAxisClipHeight=function(){var t=this;return t.getAxisClipHeight(!t.config.axis_rotated)},C.getYAxisClipWidth=function(){var t=this;return t.getAxisClipWidth(t.config.axis_rotated)+(t.config.axis_y_inner?20:0)},C.getYAxisClipHeight=function(){var t=this;return t.getAxisClipHeight(t.config.axis_rotated)},C.generateColor=function(){var t=this,e=t.config,i=t.d3,n=e.data_colors,a=S(e.color_pattern)?e.color_pattern:i.scale.category10().range(),r=e.data_color,o=[];return function(t){var e,i=t.id||t.data&&t.data.id||t;return n[i]instanceof Function?e=n[i](t):n[i]?e=n[i]:(o.indexOf(i)<0&&o.push(i),e=a[o.indexOf(i)%a.length],n[i]=e),r instanceof Function?r(e,t):e}},C.generateLevelColor=function(){var t=this.config,e=t.color_pattern,i=t.color_threshold,n="value"===i.unit,a=i.values&&i.values.length?i.values:[],r=i.max||100;return S(t.color_threshold)?function(t){var i,o=e[e.length-1];for(i=0;i<a.length;i++)if((n?t:100*t/r)<a[i]){o=e[i];break}return o}:null},C.getDefaultConfig=function(){var t={bindto:"#chart",svg_classname:void 0,size_width:void 0,size_height:void 0,padding_left:void 0,padding_right:void 0,padding_top:void 0,padding_bottom:void 0,resize_auto:!0,zoom_enabled:!1,zoom_extent:void 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0,data_selection_enabled:!1,data_selection_grouped:!1,data_selection_isselectable:function(){return!0},data_selection_multiple:!0,data_selection_draggable:!1,data_onclick:function(){},data_onmouseover:function(){},data_onmouseout:function(){},data_onselected:function(){},data_onunselected:function(){},data_url:void 0,data_headers:void 0,data_json:void 0,data_rows:void 0,data_columns:void 0,data_mimeType:void 0,data_keys:void 0,data_empty_label_text:"",subchart_show:!1,subchart_size_height:60,subchart_axis_x_show:!0,subchart_onbrush:function(){},color_pattern:[],color_threshold:{},legend_show:!0,legend_hide:!1,legend_position:"bottom",legend_inset_anchor:"top-left",legend_inset_x:10,legend_inset_y:0,legend_inset_step:void 0,legend_item_onclick:void 0,legend_item_onmouseover:void 0,legend_item_onmouseout:void 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0!==T&&(b=T+(s=Math.max(Math.abs(v),Math.abs(b))),v=T-s),C?(c=f.getDataLabelLength(v,b,"width"),d=m(f.y.range()),r+=a*((u=[c[0]/d,c[1]/d])[1]/(1-u[0]-u[1])),o+=a*(u[0]/(1-u[0]-u[1]))):L&&(c=f.getDataLabelLength(v,b,"height"),r+=f.axis.convertPixelsToAxisPadding(c[1],a),o+=f.axis.convertPixelsToAxisPadding(c[0],a)),"y"===e&&S(p.axis_y_padding)&&(r=f.axis.getPadding(p.axis_y_padding,"top",r,a),o=f.axis.getPadding(p.axis_y_padding,"bottom",o,a)),"y2"===e&&S(p.axis_y2_padding)&&(r=f.axis.getPadding(p.axis_y2_padding,"top",r,a),o=f.axis.getPadding(p.axis_y2_padding,"bottom",o,a)),A&&(h&&(o=v),g&&(r=-b)),n=[v-o,b+r],P?n.reverse():n)},C.getXDomainMin=function(t){var e=this,i=e.config;return void 0!==i.axis_x_min?e.isTimeSeries()?this.parseDate(i.axis_x_min):i.axis_x_min:e.d3.min(t,function(t){return e.d3.min(t.values,function(t){return t.x})})},C.getXDomainMax=function(t){var e=this,i=e.config;return void 0!==i.axis_x_max?e.isTimeSeries()?this.parseDate(i.axis_x_max):i.axis_x_max:e.d3.max(t,function(t){return e.d3.max(t.values,function(t){return t.x})})},C.getXDomainPadding=function(t){var e,i,n,a,r=this,s=r.config,c=t[1]-t[0];return i=r.isCategorized()?0:r.hasType("bar")?(e=r.getMaxDataCount())>1?c/(e-1)/2:.5:.01*c,"object"===o(s.axis_x_padding)&&S(s.axis_x_padding)?(n=l(s.axis_x_padding.left)?s.axis_x_padding.left:i,a=l(s.axis_x_padding.right)?s.axis_x_padding.right:i):n=a="number"==typeof s.axis_x_padding?s.axis_x_padding:i,{left:n,right:a}},C.getXDomain=function(t){var e=this,i=[e.getXDomainMin(t),e.getXDomainMax(t)],n=i[0],a=i[1],r=e.getXDomainPadding(i),o=0,s=0;return n-a!=0||e.isCategorized()||(e.isTimeSeries()?(n=new Date(.5*n.getTime()),a=new Date(1.5*a.getTime())):(n=0===n?1:.5*n,a=0===a?-1:1.5*a)),(n||0===n)&&(o=e.isTimeSeries()?new Date(n.getTime()-r.left):n-r.left),(a||0===a)&&(s=e.isTimeSeries()?new Date(a.getTime()+r.right):a+r.right),[o,s]},C.updateXDomain=function(t,e,i,n,a){var r=this,o=r.config;return i&&(r.x.domain(a||r.d3.extent(r.getXDomain(t))),r.orgXDomain=r.x.domain(),o.zoom_enabled&&r.zoom.scale(r.x).updateScaleExtent(),r.subX.domain(r.x.domain()),r.brush&&r.brush.scale(r.subX)),e&&(r.x.domain(a||(!r.brush||r.brush.empty()?r.orgXDomain:r.brush.extent())),o.zoom_enabled&&r.zoom.scale(r.x).updateScaleExtent()),n&&r.x.domain(r.trimXDomain(r.x.orgDomain())),r.x.domain()},C.trimXDomain=function(t){var e=this.getZoomDomain(),i=e[0],n=e[1];return t[0]<=i&&(t[1]=+t[1]+(i-t[0]),t[0]=i),n<=t[1]&&(t[0]=+t[0]-(t[1]-n),t[1]=n),t},C.drag=function(t){var e,i,n,a,o,s,c,d,l=this,u=l.config,h=l.main,g=l.d3;l.hasArcType()||u.data_selection_enabled&&(u.zoom_enabled&&!l.zoom.altDomain||u.data_selection_multiple&&(e=l.dragStart[0],i=l.dragStart[1],n=t[0],a=t[1],o=Math.min(e,n),s=Math.max(e,n),c=u.data_selection_grouped?l.margin.top:Math.min(i,a),d=u.data_selection_grouped?l.height:Math.max(i,a),h.select("."+r.dragarea).attr("x",o).attr("y",c).attr("width",s-o).attr("height",d-c),h.selectAll("."+r.shapes).selectAll("."+r.shape).filter(function(t){return u.data_selection_isselectable(t)}).each(function(t,e){var i,n,a,u,h,f,p=g.select(this),_=p.classed(r.SELECTED),x=p.classed(r.INCLUDED),m=!1;if(p.classed(r.circle))i=1*p.attr("cx"),n=1*p.attr("cy"),h=l.togglePoint,m=o<i&&i<s&&c<n&&n<d;else{if(!p.classed(r.bar))return;i=(f=T(this)).x,n=f.y,a=f.width,u=f.height,h=l.togglePath,m=!(s<i||i+a<o||d<n||n+u<c)}m^x&&(p.classed(r.INCLUDED,!x),p.classed(r.SELECTED,!_),h.call(l,!_,p,t,e))})))},C.dragstart=function(t){var e=this,i=e.config;e.hasArcType()||i.data_selection_enabled&&(e.dragStart=t,e.main.select("."+r.chart).append("rect").attr("class",r.dragarea).style("opacity",.1),e.dragging=!0)},C.dragend=function(){var t=this,e=t.config;t.hasArcType()||e.data_selection_enabled&&(t.main.select("."+r.dragarea).transition().duration(100).style("opacity",0).remove(),t.main.selectAll("."+r.shape).classed(r.INCLUDED,!1),t.dragging=!1)},C.getYFormat=function(t){var e=this,i=t&&!e.hasType("gauge")?e.defaultArcValueFormat:e.yFormat,n=t&&!e.hasType("gauge")?e.defaultArcValueFormat:e.y2Format;return function(t,a,r){return("y2"===e.axis.getId(r)?n:i).call(e,t,a)}},C.yFormat=function(t){var e=this,i=e.config;return(i.axis_y_tick_format?i.axis_y_tick_format:e.defaultValueFormat)(t)},C.y2Format=function(t){var e=this,i=e.config;return(i.axis_y2_tick_format?i.axis_y2_tick_format:e.defaultValueFormat)(t)},C.defaultValueFormat=function(t){return l(t)?+t:""},C.defaultArcValueFormat=function(t,e){return(100*e).toFixed(1)+"%"},C.dataLabelFormat=function(t){var e=this.config.data_labels,i=function(t){return l(t)?+t:""};return"function"==typeof e.format?e.format:"object"===o(e.format)?e.format[t]?!0===e.format[t]?i:e.format[t]:function(){return""}:i},C.initGrid=function(){var t=this,e=t.config,i=t.d3;t.grid=t.main.append("g").attr("clip-path",t.clipPathForGrid).attr("class",r.grid),e.grid_x_show&&t.grid.append("g").attr("class",r.xgrids),e.grid_y_show&&t.grid.append("g").attr("class",r.ygrids),e.grid_focus_show&&t.grid.append("g").attr("class",r.xgridFocus).append("line").attr("class",r.xgridFocus),t.xgrid=i.selectAll([]),e.grid_lines_front||t.initGridLines()},C.initGridLines=function(){var t=this,e=t.d3;t.gridLines=t.main.append("g").attr("clip-path",t.clipPathForGrid).attr("class",r.grid+" 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t=this,e=t.config,i=t.yAxis.tickValues()||t.y.ticks(e.grid_y_ticks);t.ygrid=t.main.select("."+r.ygrids).selectAll("."+r.ygrid).data(i),t.ygrid.enter().append("line").attr("class",r.ygrid),t.ygrid.attr("x1",e.axis_rotated?t.y:0).attr("x2",e.axis_rotated?t.y:t.width).attr("y1",e.axis_rotated?0:t.y).attr("y2",e.axis_rotated?t.height:t.y),t.ygrid.exit().remove(),t.smoothLines(t.ygrid,"grid")},C.gridTextAnchor=function(t){return t.position?t.position:"end"},C.gridTextDx=function(t){return"start"===t.position?4:"middle"===t.position?0:-4},C.xGridTextX=function(t){return"start"===t.position?-this.height:"middle"===t.position?-this.height/2:0},C.yGridTextX=function(t){return"start"===t.position?0:"middle"===t.position?this.width/2:this.width},C.updateGrid=function(t){var e,i,n,a=this,o=a.main,s=a.config;a.grid.style("visibility",a.hasArcType()?"hidden":"visible"),o.select("line."+r.xgridFocus).style("visibility","hidden"),s.grid_x_show&&a.updateXGrid(),a.xgridLines=o.select("."+r.xgridLines).selectAll("."+r.xgridLine).data(s.grid_x_lines),(e=a.xgridLines.enter().append("g").attr("class",function(t){return r.xgridLine+(t.class?" "+t.class:"")})).append("line").style("opacity",0),e.append("text").attr("text-anchor",a.gridTextAnchor).attr("transform",s.axis_rotated?"":"rotate(-90)").attr("dx",a.gridTextDx).attr("dy",-5).style("opacity",0),a.xgridLines.exit().transition().duration(t).style("opacity",0).remove(),s.grid_y_show&&a.updateYGrid(),a.ygridLines=o.select("."+r.ygridLines).selectAll("."+r.ygridLine).data(s.grid_y_lines),(i=a.ygridLines.enter().append("g").attr("class",function(t){return r.ygridLine+(t.class?" "+t.class:"")})).append("line").style("opacity",0),i.append("text").attr("text-anchor",a.gridTextAnchor).attr("transform",s.axis_rotated?"rotate(-90)":"").attr("dx",a.gridTextDx).attr("dy",-5).style("opacity",0),n=a.yv.bind(a),a.ygridLines.select("line").transition().duration(t).attr("x1",s.axis_rotated?n:0).attr("x2",s.axis_rotated?n:a.width).attr("y1",s.axis_rotated?0:n).attr("y2",s.axis_rotated?a.height:n).style("opacity",1),a.ygridLines.select("text").transition().duration(t).attr("x",s.axis_rotated?a.xGridTextX.bind(a):a.yGridTextX.bind(a)).attr("y",n).text(function(t){return t.text}).style("opacity",1),a.ygridLines.exit().transition().duration(t).style("opacity",0).remove()},C.redrawGrid=function(t){var e=this,i=e.config,n=e.xv.bind(e),a=e.xgridLines.select("line"),r=e.xgridLines.select("text");return[(t?a.transition():a).attr("x1",i.axis_rotated?0:n).attr("x2",i.axis_rotated?e.width:n).attr("y1",i.axis_rotated?n:0).attr("y2",i.axis_rotated?n:e.height).style("opacity",1),(t?r.transition():r).attr("x",i.axis_rotated?e.yGridTextX.bind(e):e.xGridTextX.bind(e)).attr("y",n).text(function(t){return t.text}).style("opacity",1)]},C.showXGridFocus=function(t){var e=this,i=e.config,n=t.filter(function(t){return t&&l(t.value)}),a=e.main.selectAll("line."+r.xgridFocus),o=e.xx.bind(e);i.tooltip_show&&(e.hasType("scatter")||e.hasArcType()||(a.style("visibility","visible").data([n[0]]).attr(i.axis_rotated?"y1":"x1",o).attr(i.axis_rotated?"y2":"x2",o),e.smoothLines(a,"grid")))},C.hideXGridFocus=function(){this.main.select("line."+r.xgridFocus).style("visibility","hidden")},C.updateXgridFocus=function(){var t=this,e=t.config;t.main.select("line."+r.xgridFocus).attr("x1",e.axis_rotated?0:-10).attr("x2",e.axis_rotated?t.width:-10).attr("y1",e.axis_rotated?-10:0).attr("y2",e.axis_rotated?-10:t.height)},C.generateGridData=function(t,e){var i,n,a,o,s=this,c=[],d=s.main.select("."+r.axisX).selectAll(".tick").size();if("year"===t)for(n=(i=s.getXDomain())[0].getFullYear(),a=i[1].getFullYear(),o=n;o<=a;o++)c.push(new Date(o+"-01-01 00:00:00"));else(c=e.ticks(10)).length>d&&(c=c.filter(function(t){return(""+t).indexOf(".")<0}));return c},C.getGridFilterToRemove=function(t){return t?function(e){var i=!1;return[].concat(t).forEach(function(t){("value"in t&&e.value===t.value||"class"in t&&e.class===t.class)&&(i=!0)}),i}:function(){return!0}},C.removeGridLines=function(t,e){var i=this,n=i.config,a=i.getGridFilterToRemove(t),o=function(t){return!a(t)},s=e?r.xgridLines:r.ygridLines,c=e?r.xgridLine:r.ygridLine;i.main.select("."+s).selectAll("."+c).filter(a).transition().duration(n.transition_duration).style("opacity",0).remove(),e?n.grid_x_lines=n.grid_x_lines.filter(o):n.grid_y_lines=n.grid_y_lines.filter(o)},C.initEventRect=function(){this.main.select("."+r.chart).append("g").attr("class",r.eventRects).style("fill-opacity",0)},C.redrawEventRect=function(){var t,e,i=this,n=i.config,a=i.isMultipleX(),o=i.main.select("."+r.eventRects).style("cursor",n.zoom_enabled?n.axis_rotated?"ns-resize":"ew-resize":null).classed(r.eventRectsMultiple,a).classed(r.eventRectsSingle,!a);o.selectAll("."+r.eventRect).remove(),i.eventRect=o.selectAll("."+r.eventRect),a?(t=i.eventRect.data([0]),i.generateEventRectsForMultipleXs(t.enter()),i.updateEventRect(t)):(e=i.getMaxDataCountTarget(i.data.targets),o.datum(e?e.values:[]),i.eventRect=o.selectAll("."+r.eventRect),t=i.eventRect.data(function(t){return t}),i.generateEventRectsForSingleX(t.enter()),i.updateEventRect(t),t.exit().remove())},C.updateEventRect=function(t){var e,i,n,a,r,o,s=this,c=s.config;t=t||s.eventRect.data(function(t){return t}),s.isMultipleX()?(e=0,i=0,n=s.width,a=s.height):(!s.isCustomX()&&!s.isTimeSeries()||s.isCategorized()?(r=s.getEventRectWidth(),o=function(t){return s.x(t.x)-r/2}):(s.updateXs(),r=function(t){var e=s.getPrevX(t.index),i=s.getNextX(t.index);return null===e&&null===i?c.axis_rotated?s.height:s.width:(null===e&&(e=s.x.domain()[0]),null===i&&(i=s.x.domain()[1]),Math.max(0,(s.x(i)-s.x(e))/2))},o=function(t){var e=s.getPrevX(t.index),i=s.getNextX(t.index),n=s.data.xs[t.id][t.index];return null===e&&null===i?0:(null===e&&(e=s.x.domain()[0]),(s.x(n)+s.x(e))/2)}),e=c.axis_rotated?0:o,i=c.axis_rotated?o:0,n=c.axis_rotated?s.width:r,a=c.axis_rotated?r:s.height),t.attr("class",s.classEvent.bind(s)).attr("x",e).attr("y",i).attr("width",n).attr("height",a)},C.generateEventRectsForSingleX=function(t){var e=this,i=e.d3,n=e.config;t.append("rect").attr("class",e.classEvent.bind(e)).style("cursor",n.data_selection_enabled&&n.data_selection_grouped?"pointer":null).on("mouseover",function(t){var i=t.index;e.dragging||e.flowing||e.hasArcType()||(n.point_focus_expand_enabled&&e.expandCircles(i,null,!0),e.expandBars(i,null,!0),e.main.selectAll("."+r.shape+"-"+i).each(function(t){n.data_onmouseover.call(e.api,t)}))}).on("mouseout",function(t){var i=t.index;e.config&&(e.hasArcType()||(e.hideXGridFocus(),e.hideTooltip(),e.unexpandCircles(),e.unexpandBars(),e.main.selectAll("."+r.shape+"-"+i).each(function(t){n.data_onmouseout.call(e.api,t)})))}).on("mousemove",function(t){var a,o=t.index,s=e.svg.select("."+r.eventRect+"-"+o);e.dragging||e.flowing||e.hasArcType()||(e.isStepType(t)&&"step-after"===e.config.line_step_type&&i.mouse(this)[0]<e.x(e.getXValue(t.id,o))&&(o-=1),a=e.filterTargetsToShow(e.data.targets).map(function(t){return e.addName(e.getValueOnIndex(t.values,o))}),n.tooltip_grouped&&(e.showTooltip(a,this),e.showXGridFocus(a)),(!n.tooltip_grouped||n.data_selection_enabled&&!n.data_selection_grouped)&&e.main.selectAll("."+r.shape+"-"+o).each(function(){i.select(this).classed(r.EXPANDED,!0),n.data_selection_enabled&&s.style("cursor",n.data_selection_grouped?"pointer":null),n.tooltip_grouped||(e.hideXGridFocus(),e.hideTooltip(),n.data_selection_grouped||(e.unexpandCircles(o),e.unexpandBars(o)))}).filter(function(t){return e.isWithinShape(this,t)}).each(function(t){n.data_selection_enabled&&(n.data_selection_grouped||n.data_selection_isselectable(t))&&s.style("cursor","pointer"),n.tooltip_grouped||(e.showTooltip([t],this),e.showXGridFocus([t]),n.point_focus_expand_enabled&&e.expandCircles(o,t.id,!0),e.expandBars(o,t.id,!0))}))}).on("click",function(t){var a=t.index;!e.hasArcType()&&e.toggleShape&&(e.cancelClick?e.cancelClick=!1:(e.isStepType(t)&&"step-after"===n.line_step_type&&i.mouse(this)[0]<e.x(e.getXValue(t.id,a))&&(a-=1),e.main.selectAll("."+r.shape+"-"+a).each(function(t){(n.data_selection_grouped||e.isWithinShape(this,t))&&(e.toggleShape(this,t,a),e.config.data_onclick.call(e.api,t,this))})))}).call(n.data_selection_draggable&&e.drag?i.behavior.drag().origin(Object).on("drag",function(){e.drag(i.mouse(this))}).on("dragstart",function(){e.dragstart(i.mouse(this))}).on("dragend",function(){e.dragend()}):function(){})},C.generateEventRectsForMultipleXs=function(t){function e(){i.svg.select("."+r.eventRect).style("cursor",null),i.hideXGridFocus(),i.hideTooltip(),i.unexpandCircles(),i.unexpandBars()}var i=this,n=i.d3,a=i.config;t.append("rect").attr("x",0).attr("y",0).attr("width",i.width).attr("height",i.height).attr("class",r.eventRect).on("mouseout",function(){i.config&&(i.hasArcType()||e())}).on("mousemove",function(){var t,o,s,c=i.filterTargetsToShow(i.data.targets);i.dragging||i.hasArcType(c)||(t=n.mouse(this),o=i.findClosestFromTargets(c,t),!i.mouseover||o&&o.id===i.mouseover.id||(a.data_onmouseout.call(i.api,i.mouseover),i.mouseover=void 0),o?(s=(i.isScatterType(o)||!a.tooltip_grouped?[o]:i.filterByX(c,o.x)).map(function(t){return 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e.color(t.id)};e.mainBar=e.main.selectAll("."+r.bars).selectAll("."+r.bar).data(i),e.mainBar.enter().append("path").attr("class",n).style("stroke",o).style("fill",o),e.mainBar.style("opacity",a),e.mainBar.exit().transition().duration(t).remove()},C.redrawBar=function(t,e){return[(e?this.mainBar.transition(Math.random().toString()):this.mainBar).attr("d",t).style("stroke",this.color).style("fill",this.color).style("opacity",1)]},C.getBarW=function(t,e){var i=this.config,n="number"==typeof i.bar_width?i.bar_width:e?t.tickInterval()*i.bar_width_ratio/e:0;return i.bar_width_max&&n>i.bar_width_max?i.bar_width_max:n},C.getBars=function(t,e){var i=this;return(e?i.main.selectAll("."+r.bars+i.getTargetSelectorSuffix(e)):i.main).selectAll("."+r.bar+(l(t)?"-"+t:""))},C.expandBars=function(t,e,i){var n=this;i&&n.unexpandBars(),n.getBars(t,e).classed(r.EXPANDED,!0)},C.unexpandBars=function(t){this.getBars(t).classed(r.EXPANDED,!1)},C.generateDrawBar=function(t,e){var i=this,n=i.config,a=i.generateGetBarPoints(t,e);return function(t,e){var i=a(t,e),r=n.axis_rotated?1:0,o=n.axis_rotated?0:1;return"M "+i[0][r]+","+i[0][o]+" L"+i[1][r]+","+i[1][o]+" L"+i[2][r]+","+i[2][o]+" L"+i[3][r]+","+i[3][o]+" z"}},C.generateGetBarPoints=function(t,e){var i=this,n=e?i.subXAxis:i.xAxis,a=t.__max__+1,r=i.getBarW(n,a),o=i.getShapeX(r,a,t,!!e),s=i.getShapeY(!!e),c=i.getShapeOffset(i.isBarType,t,!!e),d=r*(i.config.bar_space/2),l=e?i.getSubYScale:i.getYScale;return function(t,e){var n=l.call(i,t.id)(0),a=c(t,e)||n,u=o(t),h=s(t);return i.config.axis_rotated&&(0<t.value&&h<n||t.value<0&&n<h)&&(h=n),[[u+d,a],[u+d,h-(n-a)],[u+r-d,h-(n-a)],[u+r-d,a]]}},C.isWithinBar=function(t){var e=this.d3.mouse(t),i=t.getBoundingClientRect(),n=t.pathSegList.getItem(0),a=t.pathSegList.getItem(1),r=Math.min(n.x,a.x),o=Math.min(n.y,a.y),s=r+i.width+2,c=o+i.height+2,d=o-2;return r-2<e[0]&&e[0]<s&&d<e[1]&&e[1]<c},C.getShapeIndices=function(t){var e,i,n=this,a=n.config,r={},o=0;return n.filterTargetsToShow(n.data.targets.filter(t,n)).forEach(function(t){for(e=0;e<a.data_groups.length;e++)if(!(a.data_groups[e].indexOf(t.id)<0))for(i=0;i<a.data_groups[e].length;i++)if(a.data_groups[e][i]in r){r[t.id]=r[a.data_groups[e][i]];break}void 0===r[t.id]&&(r[t.id]=o++)}),r.__max__=o-1,r},C.getShapeX=function(t,e,i,n){var a=this,r=n?a.subX:a.x;return function(n){var a=n.id in i?i[n.id]:0;return n.x||0===n.x?r(n.x)-t*(e/2-a):0}},C.getShapeY=function(t){var e=this;return function(i){return(t?e.getSubYScale(i.id):e.getYScale(i.id))(i.value)}},C.getShapeOffset=function(t,e,i){var n=this,a=n.orderTargets(n.filterTargetsToShow(n.data.targets.filter(t,n))),r=a.map(function(t){return t.id});return function(t,o){var s=i?n.getSubYScale(t.id):n.getYScale(t.id),c=s(0),d=c;return a.forEach(function(i){var a=n.isStepType(t)?n.convertValuesToStep(i.values):i.values;i.id!==t.id&&e[i.id]===e[t.id]&&r.indexOf(i.id)<r.indexOf(t.id)&&(void 0!==a[o]&&+a[o].x==+t.x||(o=-1,a.forEach(function(e,i){e.x===t.x&&(o=i)})),o in a&&a[o].value*t.value>=0&&(d+=s(a[o].value)-c))}),d}},C.isWithinShape=function(t,e){var i,n=this,a=n.d3.select(t);return n.isTargetToShow(e.id)?"circle"===t.nodeName?i=n.isStepType(e)?n.isWithinStep(t,n.getYScale(e.id)(e.value)):n.isWithinCircle(t,1.5*n.pointSelectR(e)):"path"===t.nodeName&&(i=!a.classed(r.bar)||n.isWithinBar(t)):i=!1,i},C.getInterpolate=function(t){var e=this,i=e.isInterpolationType(e.config.spline_interpolation_type)?e.config.spline_interpolation_type:"cardinal";return e.isSplineType(t)?i:e.isStepType(t)?e.config.line_step_type:"linear"},C.initLine=function(){this.main.select("."+r.chart).append("g").attr("class",r.chartLines)},C.updateTargetsForLine=function(t){var e,i=this,n=i.config,a=i.classChartLine.bind(i),o=i.classLines.bind(i),s=i.classAreas.bind(i),c=i.classCircles.bind(i),d=i.classFocus.bind(i);(e=i.main.select("."+r.chartLines).selectAll("."+r.chartLine).data(t).attr("class",function(t){return a(t)+d(t)}).enter().append("g").attr("class",a).style("opacity",0).style("pointer-events","none")).append("g").attr("class",o),e.append("g").attr("class",s),e.append("g").attr("class",function(t){return i.generateClass(r.selectedCircles,t.id)}),e.append("g").attr("class",c).style("cursor",function(t){return n.data_selection_isselectable(t)?"pointer":null}),t.forEach(function(t){i.main.selectAll("."+r.selectedCircles+i.getTargetSelectorSuffix(t.id)).selectAll("."+r.selectedCircle).each(function(e){e.value=t.values[e.index].value})})},C.updateLine=function(t){var e=this;e.mainLine=e.main.selectAll("."+r.lines).selectAll("."+r.line).data(e.lineData.bind(e)),e.mainLine.enter().append("path").attr("class",e.classLine.bind(e)).style("stroke",e.color),e.mainLine.style("opacity",e.initialOpacity.bind(e)).style("shape-rendering",function(t){return e.isStepType(t)?"crispEdges":""}).attr("transform",null),e.mainLine.exit().transition().duration(t).style("opacity",0).remove()},C.redrawLine=function(t,e){return[(e?this.mainLine.transition(Math.random().toString()):this.mainLine).attr("d",t).style("stroke",this.color).style("opacity",1)]},C.generateDrawLine=function(t,e){var i=this,n=i.config,a=i.d3.svg.line(),r=i.generateGetLinePoints(t,e),o=e?i.getSubYScale:i.getYScale,s=function(t){return(e?i.subxx:i.xx).call(i,t)},c=function(t,e){return n.data_groups.length>0?r(t,e)[0][1]:o.call(i,t.id)(t.value)};return a=n.axis_rotated?a.x(c).y(s):a.x(s).y(c),n.line_connectNull||(a=a.defined(function(t){return null!=t.value})),function(t){var r,s=n.line_connectNull?i.filterRemoveNull(t.values):t.values,c=e?i.x:i.subX,d=o.call(i,t.id),l=0,u=0;return i.isLineType(t)?n.data_regions[t.id]?r=i.lineWithRegions(s,c,d,n.data_regions[t.id]):(i.isStepType(t)&&(s=i.convertValuesToStep(s)),r=a.interpolate(i.getInterpolate(t))(s)):(s[0]&&(l=c(s[0].x),u=d(s[0].value)),r=n.axis_rotated?"M "+u+" "+l:"M "+l+" "+u),r||"M 0 0"}},C.generateGetLinePoints=function(t,e){var i=this,n=i.config,a=t.__max__+1,r=i.getShapeX(0,a,t,!!e),o=i.getShapeY(!!e),s=i.getShapeOffset(i.isLineType,t,!!e),c=e?i.getSubYScale:i.getYScale;return function(t,e){var a=c.call(i,t.id)(0),d=s(t,e)||a,l=r(t),u=o(t);return n.axis_rotated&&(0<t.value&&u<a||t.value<0&&a<u)&&(u=a),[[l,u-(a-d)],[l,u-(a-d)],[l,u-(a-d)],[l,u-(a-d)]]}},C.lineWithRegions=function(t,e,i,n){function a(t){return"M"+t[0][0]+" "+t[0][1]+" "+t[1][0]+" "+t[1][1]}var r,o,s,c,d,l,u,h,g,f,p,_=this,x=_.config,m="M",y=_.isCategorized()?.5:0,S=[];if(void 0!==n)for(r=0;r<n.length;r++)S[r]={},void 0===n[r].start?S[r].start=t[0].x:S[r].start=_.isTimeSeries()?_.parseDate(n[r].start):n[r].start,void 0===n[r].end?S[r].end=t[t.length-1].x:S[r].end=_.isTimeSeries()?_.parseDate(n[r].end):n[r].end;for(f=x.axis_rotated?function(t){return i(t.value)}:function(t){return e(t.x)},p=x.axis_rotated?function(t){return e(t.x)}:function(t){return i(t.value)},s=_.isTimeSeries()?function(t,n,r,o){var s,c=t.x.getTime(),l=n.x-t.x,u=new Date(c+l*r),h=new Date(c+l*(r+o));return s=x.axis_rotated?[[i(d(r)),e(u)],[i(d(r+o)),e(h)]]:[[e(u),i(d(r))],[e(h),i(d(r+o))]],a(s)}:function(t,n,r,o){var s;return s=x.axis_rotated?[[i(d(r),!0),e(c(r))],[i(d(r+o),!0),e(c(r+o))]]:[[e(c(r),!0),i(d(r))],[e(c(r+o),!0),i(d(r+o))]],a(s)},r=0;r<t.length;r++){if(void 0!==S&&function(t,e){var i;for(i=0;i<e.length;i++)if(e[i].start<t&&t<=e[i].end)return!0;return!1}(t[r].x,S))for(c=_.getScale(t[r-1].x+y,t[r].x+y,_.isTimeSeries()),d=_.getScale(t[r-1].value,t[r].value),l=e(t[r].x)-e(t[r-1].x),u=i(t[r].value)-i(t[r-1].value),g=2*(h=2/Math.sqrt(Math.pow(l,2)+Math.pow(u,2))),o=h;o<=1;o+=g)m+=s(t[r-1],t[r],o,h);else m+=" "+f(t[r])+" "+p(t[r]);t[r].x}return m},C.updateArea=function(t){var e=this,i=e.d3;e.mainArea=e.main.selectAll("."+r.areas).selectAll("."+r.area).data(e.lineData.bind(e)),e.mainArea.enter().append("path").attr("class",e.classArea.bind(e)).style("fill",e.color).style("opacity",function(){return e.orgAreaOpacity=+i.select(this).style("opacity"),0}),e.mainArea.style("opacity",e.orgAreaOpacity),e.mainArea.exit().transition().duration(t).style("opacity",0).remove()},C.redrawArea=function(t,e){return[(e?this.mainArea.transition(Math.random().toString()):this.mainArea).attr("d",t).style("fill",this.color).style("opacity",this.orgAreaOpacity)]},C.generateDrawArea=function(t,e){var i=this,n=i.config,a=i.d3.svg.area(),r=i.generateGetAreaPoints(t,e),o=e?i.getSubYScale:i.getYScale,s=function(t){return(e?i.subxx:i.xx).call(i,t)},c=function(t,e){return n.data_groups.length>0?r(t,e)[0][1]:o.call(i,t.id)(i.getAreaBaseValue(t.id))},d=function(t,e){return n.data_groups.length>0?r(t,e)[1][1]:o.call(i,t.id)(t.value)};return a=n.axis_rotated?a.x0(c).x1(d).y(s):a.x(s).y0(n.area_above?0:c).y1(d),n.line_connectNull||(a=a.defined(function(t){return null!==t.value})),function(t){var e,r=n.line_connectNull?i.filterRemoveNull(t.values):t.values,o=0,s=0;return i.isAreaType(t)?(i.isStepType(t)&&(r=i.convertValuesToStep(r)),e=a.interpolate(i.getInterpolate(t))(r)):(r[0]&&(o=i.x(r[0].x),s=i.getYScale(t.id)(r[0].value)),e=n.axis_rotated?"M "+s+" "+o:"M "+o+" "+s),e||"M 0 0"}},C.getAreaBaseValue=function(){return 0},C.generateGetAreaPoints=function(t,e){var i=this,n=i.config,a=t.__max__+1,r=i.getShapeX(0,a,t,!!e),o=i.getShapeY(!!e),s=i.getShapeOffset(i.isAreaType,t,!!e),c=e?i.getSubYScale:i.getYScale;return function(t,e){var a=c.call(i,t.id)(0),d=s(t,e)||a,l=r(t),u=o(t);return n.axis_rotated&&(0<t.value&&u<a||t.value<0&&a<u)&&(u=a),[[l,d],[l,u-(a-d)],[l,u-(a-d)],[l,d]]}},C.updateCircle=function(){var t=this;t.mainCircle=t.main.selectAll("."+r.circles).selectAll("."+r.circle).data(t.lineOrScatterData.bind(t)),t.mainCircle.enter().append("circle").attr("class",t.classCircle.bind(t)).attr("r",t.pointR.bind(t)).style("fill",t.color),t.mainCircle.style("opacity",t.initialOpacityForCircle.bind(t)),t.mainCircle.exit().remove()},C.redrawCircle=function(t,e,i){var n=this.main.selectAll("."+r.selectedCircle);return[(i?this.mainCircle.transition(Math.random().toString()):this.mainCircle).style("opacity",this.opacityForCircle.bind(this)).style("fill",this.color).attr("cx",t).attr("cy",e),(i?n.transition(Math.random().toString()):n).attr("cx",t).attr("cy",e)]},C.circleX=function(t){return t.x||0===t.x?this.x(t.x):null},C.updateCircleY=function(){var t,e,i=this;i.config.data_groups.length>0?(t=i.getShapeIndices(i.isLineType),e=i.generateGetLinePoints(t),i.circleY=function(t,i){return e(t,i)[0][1]}):i.circleY=function(t){return i.getYScale(t.id)(t.value)}},C.getCircles=function(t,e){var i=this;return(e?i.main.selectAll("."+r.circles+i.getTargetSelectorSuffix(e)):i.main).selectAll("."+r.circle+(l(t)?"-"+t:""))},C.expandCircles=function(t,e,i){var n=this,a=n.pointExpandedR.bind(n);i&&n.unexpandCircles(),n.getCircles(t,e).classed(r.EXPANDED,!0).attr("r",a)},C.unexpandCircles=function(t){var e=this,i=e.pointR.bind(e);e.getCircles(t).filter(function(){return e.d3.select(this).classed(r.EXPANDED)}).classed(r.EXPANDED,!1).attr("r",i)},C.pointR=function(t){var e=this,i=e.config;return e.isStepType(t)?0:u(i.point_r)?i.point_r(t):i.point_r},C.pointExpandedR=function(t){var e=this,i=e.config;return i.point_focus_expand_enabled?u(i.point_focus_expand_r)?i.point_focus_expand_r(t):i.point_focus_expand_r?i.point_focus_expand_r:1.75*e.pointR(t):e.pointR(t)},C.pointSelectR=function(t){var e=this,i=e.config;return u(i.point_select_r)?i.point_select_r(t):i.point_select_r?i.point_select_r:4*e.pointR(t)},C.isWithinCircle=function(t,e){var i=this.d3,n=i.mouse(t),a=i.select(t),r=+a.attr("cx"),o=+a.attr("cy");return Math.sqrt(Math.pow(r-n[0],2)+Math.pow(o-n[1],2))<e},C.isWithinStep=function(t,e){return Math.abs(e-this.d3.mouse(t)[1])<30},C.getCurrentWidth=function(){var t=this,e=t.config;return e.size_width?e.size_width:t.getParentWidth()},C.getCurrentHeight=function(){var t=this,e=t.config,i=e.size_height?e.size_height:t.getParentHeight();return i>0?i:320/(t.hasType("gauge")&&!e.gauge_fullCircle?2:1)},C.getCurrentPaddingTop=function(){var t=this,e=t.config,i=l(e.padding_top)?e.padding_top:0;return t.title&&t.title.node()&&(i+=t.getTitlePadding()),i},C.getCurrentPaddingBottom=function(){var t=this.config;return l(t.padding_bottom)?t.padding_bottom:0},C.getCurrentPaddingLeft=function(t){var e=this,i=e.config;return l(i.padding_left)?i.padding_left:i.axis_rotated?i.axis_x_show?Math.max(_(e.getAxisWidthByAxisId("x",t)),40):1:!i.axis_y_show||i.axis_y_inner?e.axis.getYAxisLabelPosition().isOuter?30:1:_(e.getAxisWidthByAxisId("y",t))},C.getCurrentPaddingRight=function(){var t=this,e=t.config,i=t.isLegendRight?t.getLegendWidth()+20:0;return l(e.padding_right)?e.padding_right+1:e.axis_rotated?10+i:!e.axis_y2_show||e.axis_y2_inner?2+i+(t.axis.getY2AxisLabelPosition().isOuter?20:0):_(t.getAxisWidthByAxisId("y2"))+i},C.getParentRectValue=function(t){for(var e,i=this.selectChart.node();i&&"BODY"!==i.tagName;){try{e=i.getBoundingClientRect()[t]}catch(n){"width"===t&&(e=i.offsetWidth)}if(e)break;i=i.parentNode}return e},C.getParentWidth=function(){return this.getParentRectValue("width")},C.getParentHeight=function(){var t=this.selectChart.style("height");return t.indexOf("px")>0?+t.replace("px",""):0},C.getSvgLeft=function(t){var e=this,i=e.config,n=i.axis_rotated||!i.axis_rotated&&!i.axis_y_inner,a=i.axis_rotated?r.axisX:r.axisY,o=e.main.select("."+a).node(),s=o&&n?o.getBoundingClientRect():{right:0},c=e.selectChart.node().getBoundingClientRect(),d=e.hasArcType(),l=s.right-c.left-(d?0:e.getCurrentPaddingLeft(t));return l>0?l:0},C.getAxisWidthByAxisId=function(t,e){var i=this,n=i.axis.getLabelPositionById(t);return i.axis.getMaxTickWidth(t,e)+(n.isInner?20:40)},C.getHorizontalAxisHeight=function(t){var e=this,i=e.config,n=30;return"x"!==t||i.axis_x_show?"x"===t&&i.axis_x_height?i.axis_x_height:"y"!==t||i.axis_y_show?"y2"!==t||i.axis_y2_show?("x"===t&&!i.axis_rotated&&i.axis_x_tick_rotate&&(n=30+e.axis.getMaxTickWidth(t)*Math.cos(Math.PI*(90-i.axis_x_tick_rotate)/180)),"y"===t&&i.axis_rotated&&i.axis_y_tick_rotate&&(n=30+e.axis.getMaxTickWidth(t)*Math.cos(Math.PI*(90-i.axis_y_tick_rotate)/180)),n+(e.axis.getLabelPositionById(t).isInner?0:10)+("y2"===t?-10:0)):e.rotated_padding_top:!i.legend_show||e.isLegendRight||e.isLegendInset?1:10:8},C.getEventRectWidth=function(){return Math.max(0,this.xAxis.tickInterval())},C.initBrush=function(){var t=this,e=t.d3;t.brush=e.svg.brush().on("brush",function(){t.redrawForBrush()}),t.brush.update=function(){return t.context&&t.context.select("."+r.brush).call(this),this},t.brush.scale=function(e){return t.config.axis_rotated?this.y(e):this.x(e)}},C.initSubchart=function(){var t=this,e=t.config,i=t.context=t.svg.append("g").attr("transform",t.getTranslate("context")),n=e.subchart_show?"visible":"hidden";i.style("visibility",n),i.append("g").attr("clip-path",t.clipPathForSubchart).attr("class",r.chart),i.select("."+r.chart).append("g").attr("class",r.chartBars),i.select("."+r.chart).append("g").attr("class",r.chartLines),i.append("g").attr("clip-path",t.clipPath).attr("class",r.brush).call(t.brush),t.axes.subx=i.append("g").attr("class",r.axisX).attr("transform",t.getTranslate("subx")).attr("clip-path",e.axis_rotated?"":t.clipPathForXAxis).style("visibility",e.subchart_axis_x_show?n:"hidden")},C.updateTargetsForSubchart=function(t){var e,i=this,n=i.context,a=i.config,o=i.classChartBar.bind(i),s=i.classBars.bind(i),c=i.classChartLine.bind(i),d=i.classLines.bind(i),l=i.classAreas.bind(i);a.subchart_show&&(n.select("."+r.chartBars).selectAll("."+r.chartBar).data(t).attr("class",o).enter().append("g").style("opacity",0).attr("class",o).append("g").attr("class",s),(e=n.select("."+r.chartLines).selectAll("."+r.chartLine).data(t).attr("class",c).enter().append("g").style("opacity",0).attr("class",c)).append("g").attr("class",d),e.append("g").attr("class",l),n.selectAll("."+r.brush+" rect").attr(a.axis_rotated?"width":"height",a.axis_rotated?i.width2:i.height2))},C.updateBarForSubchart=function(t){var e=this;e.contextBar=e.context.selectAll("."+r.bars).selectAll("."+r.bar).data(e.barData.bind(e)),e.contextBar.enter().append("path").attr("class",e.classBar.bind(e)).style("stroke","none").style("fill",e.color),e.contextBar.style("opacity",e.initialOpacity.bind(e)),e.contextBar.exit().transition().duration(t).style("opacity",0).remove()},C.redrawBarForSubchart=function(t,e,i){(e?this.contextBar.transition(Math.random().toString()).duration(i):this.contextBar).attr("d",t).style("opacity",1)},C.updateLineForSubchart=function(t){var e=this;e.contextLine=e.context.selectAll("."+r.lines).selectAll("."+r.line).data(e.lineData.bind(e)),e.contextLine.enter().append("path").attr("class",e.classLine.bind(e)).style("stroke",e.color),e.contextLine.style("opacity",e.initialOpacity.bind(e)),e.contextLine.exit().transition().duration(t).style("opacity",0).remove()},C.redrawLineForSubchart=function(t,e,i){(e?this.contextLine.transition(Math.random().toString()).duration(i):this.contextLine).attr("d",t).style("opacity",1)},C.updateAreaForSubchart=function(t){var e=this,i=e.d3;e.contextArea=e.context.selectAll("."+r.areas).selectAll("."+r.area).data(e.lineData.bind(e)),e.contextArea.enter().append("path").attr("class",e.classArea.bind(e)).style("fill",e.color).style("opacity",function(){return e.orgAreaOpacity=+i.select(this).style("opacity"),0}),e.contextArea.style("opacity",0),e.contextArea.exit().transition().duration(t).style("opacity",0).remove()},C.redrawAreaForSubchart=function(t,e,i){(e?this.contextArea.transition(Math.random().toString()).duration(i):this.contextArea).attr("d",t).style("fill",this.color).style("opacity",this.orgAreaOpacity)},C.redrawSubchart=function(t,e,i,n,a,r,o){var s,c,d,l=this,u=l.d3,h=l.config;l.context.style("visibility",h.subchart_show?"visible":"hidden"),h.subchart_show&&(u.event&&"zoom"===u.event.type&&l.brush.extent(l.x.orgDomain()).update(),t&&(l.brush.empty()||l.brush.extent(l.x.orgDomain()).update(),s=l.generateDrawArea(a,!0),c=l.generateDrawBar(r,!0),d=l.generateDrawLine(o,!0),l.updateBarForSubchart(i),l.updateLineForSubchart(i),l.updateAreaForSubchart(i),l.redrawBarForSubchart(c,i,i),l.redrawLineForSubchart(d,i,i),l.redrawAreaForSubchart(s,i,i)))},C.redrawForBrush=function(){var 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this.isBarType(t)||this.isLineType(t)?t.values:[]},C.isInterpolationType=function(t){return["linear","linear-closed","basis","basis-open","basis-closed","bundle","cardinal","cardinal-open","cardinal-closed","monotone"].indexOf(t)>=0},C.isSafari=function(){var t=window.navigator.userAgent;return t.indexOf("Safari")>=0&&t.indexOf("Chrome")<0},C.isChrome=function(){return window.navigator.userAgent.indexOf("Chrome")>=0},C.initZoom=function(){var t,e=this,i=e.d3,n=e.config;e.zoom=i.behavior.zoom().on("zoomstart",function(){t=i.event.sourceEvent,e.zoom.altDomain=i.event.sourceEvent.altKey?e.x.orgDomain():null,n.zoom_onzoomstart.call(e.api,i.event.sourceEvent)}).on("zoom",function(){e.redrawForZoom.call(e)}).on("zoomend",function(){var a=i.event.sourceEvent;a&&t.clientX===a.clientX&&t.clientY===a.clientY||(e.redrawEventRect(),e.updateZoom(),n.zoom_onzoomend.call(e.api,e.x.orgDomain()))}),e.zoom.scale=function(t){return n.axis_rotated?this.y(t):this.x(t)},e.zoom.orgScaleExtent=function(){var t=n.zoom_extent?n.zoom_extent:[1,10];return[t[0],Math.max(e.getMaxDataCount()/t[1],t[1])]},e.zoom.updateScaleExtent=function(){var t=m(e.x.orgDomain())/m(e.getZoomDomain()),i=this.orgScaleExtent();return this.scaleExtent([i[0]*t,i[1]*t]),this}},C.getZoomDomain=function(){var t=this,e=t.config,i=t.d3;return[i.min([t.orgXDomain[0],e.zoom_x_min]),i.max([t.orgXDomain[1],e.zoom_x_max])]},C.updateZoom=function(){var t=this,e=t.config.zoom_enabled?t.zoom:function(){};t.main.select("."+r.zoomRect).call(e).on("dblclick.zoom",null),t.main.selectAll("."+r.eventRect).call(e).on("dblclick.zoom",null)},C.redrawForZoom=function(){var t=this,e=t.d3,i=t.config,n=t.zoom,a=t.x;if(i.zoom_enabled&&0!==t.filterTargetsToShow(t.data.targets).length){if("mousemove"===e.event.sourceEvent.type&&n.altDomain)return a.domain(n.altDomain),void 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\ No newline at end of file
+// SPDX-License-Identifier: MIT
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this.params.withoutTransition?t:this.d3.transition(t)},a.isVertical=function(){return"left"===this.orient||"right"===this.orient},a.tspanData=function(t,e,i,n){var a=this,r=a.params.tickMultiline?a.splitTickText(t,i,n):[].concat(a.textFormatted(t));return r.map(function(t){return{index:e,splitted:t,length:r.length}})},a.splitTickText=function(t,e,i){function n(t,e){r=void 0;for(var i=1;i<e.length;i++)if(" "===e.charAt(i)&&(r=i),a=e.substr(0,i+1),o=s.tickTextCharSize.w*a.length,d<o)return n(t.concat(e.substr(0,r||i)),e.slice(r?r+1:i));return t.concat(e)}var a,r,o,s=this,c=s.textFormatted(t),d=s.params.tickWidth,l=[];return"[object Array]"===Object.prototype.toString.call(c)?c:((!d||d<=0)&&(d=s.isVertical()?95:s.params.isCategory?Math.ceil(i(e[1])-i(e[0]))-12:110),n(l,c+""))},a.updateTickLength=function(){var t=this;t.tickLength=Math.max(t.innerTickSize,0)+t.tickPadding},a.lineY2=function(t){var e=this,i=e.scale(t)+(e.tickCentered?0:e.tickOffset);return e.range[0]<i&&i<e.range[1]?e.innerTickSize:0},a.textY=function(){var t=this,e=t.tickTextRotate;return e?11.5-e/15*2.5*(e>0?1:-1):t.tickLength},a.textTransform=function(){var t=this.tickTextRotate;return t?"rotate("+t+")":""},a.textTextAnchor=function(){var t=this.tickTextRotate;return t?t>0?"start":"end":"middle"},a.tspanDx=function(){var t=this.tickTextRotate;return t?8*Math.sin(Math.PI*(t/180)):0},a.tspanDy=function(t,e){var i=this,n=i.tickTextCharSize.h;return 0===e&&(n=i.isVertical()?-((t.length-1)*(i.tickTextCharSize.h/2)-3):".71em"),n},a.generateAxis=function(){function t(a){a.each(function(){var a,r,o,s=t.g=i.select(this),c=this.__chart__||e.scale,d=this.__chart__=e.copyScale(),l=e.tickValues?e.tickValues:e.generateTicks(d),u=s.selectAll(".tick").data(l,d),h=u.enter().insert("g",".domain").attr("class","tick").style("opacity",1e-6),g=u.exit().remove(),f=e.transitionise(u).style("opacity",1);n.isCategory?(e.tickOffset=Math.ceil((d(1)-d(0))/2),r=e.tickCentered?0:e.tickOffset,o=e.tickCentered?e.tickOffset:0):e.tickOffset=r=0,h.append("line"),h.append("text"),e.updateRange(),e.updateTickLength(),e.updateTickTextCharSize(s.select(".tick"));var p=f.select("line"),_=f.select("text"),x=u.select("text").selectAll("tspan").data(function(t,i){return e.tspanData(t,i,l,d)});x.enter().append("tspan"),x.exit().remove(),x.text(function(t){return t.splitted});var m=s.selectAll(".domain").data([0]),y=(m.enter().append("path").attr("class","domain"),e.transitionise(m));switch(e.orient){case"bottom":a=e.axisX,p.attr("x1",r).attr("x2",r).attr("y2",function(t,i){return e.lineY2(t,i)}),_.attr("x",0).attr("y",function(t,i){return e.textY(t,i)}).attr("transform",function(t,i){return e.textTransform(t,i)}).style("text-anchor",function(t,i){return e.textTextAnchor(t,i)}),x.attr("x",0).attr("dy",function(t,i){return e.tspanDy(t,i)}).attr("dx",function(t,i){return e.tspanDx(t,i)}),y.attr("d","M"+e.range[0]+","+e.outerTickSize+"V0H"+e.range[1]+"V"+e.outerTickSize);break;case"top":a=e.axisX,p.attr("x2",0).attr("y2",-e.innerTickSize),_.attr("x",0).attr("y",-e.tickLength).style("text-anchor","middle"),x.attr("x",0).attr("dy","0em"),y.attr("d","M"+e.range[0]+","+-e.outerTickSize+"V0H"+e.range[1]+"V"+-e.outerTickSize);break;case"left":a=e.axisY,p.attr("x2",-e.innerTickSize).attr("y1",o).attr("y2",o),_.attr("x",-e.tickLength).attr("y",e.tickOffset).style("text-anchor","end"),x.attr("x",-e.tickLength).attr("dy",function(t,i){return e.tspanDy(t,i)}),y.attr("d","M"+-e.outerTickSize+","+e.range[0]+"H0V"+e.range[1]+"H"+-e.outerTickSize);break;case"right":a=e.axisY,p.attr("x2",e.innerTickSize).attr("y2",0),_.attr("x",e.tickLength).attr("y",0).style("text-anchor","start"),x.attr("x",e.tickLength).attr("dy",function(t,i){return e.tspanDy(t,i)}),y.attr("d","M"+e.outerTickSize+","+e.range[0]+"H0V"+e.range[1]+"H"+e.outerTickSize)}if(d.rangeBand){var S=d,w=S.rangeBand()/2;c=d=function(t){return S(t)+w}}else c.rangeBand?c=d:g.call(a,d,e.tickOffset);h.call(a,c,e.tickOffset),f.call(a,d,e.tickOffset)})}var e=this,i=e.d3,n=e.params;return t.scale=function(i){return arguments.length?(e.scale=i,t):e.scale},t.orient=function(i){return arguments.length?(e.orient=i in{top:1,right:1,bottom:1,left:1}?i+"":"bottom",t):e.orient},t.tickFormat=function(i){return arguments.length?(e.tickFormat=i,t):e.tickFormat},t.tickCentered=function(i){return arguments.length?(e.tickCentered=i,t):e.tickCentered},t.tickOffset=function(){return e.tickOffset},t.tickInterval=function(){var i;return i=n.isCategory?2*e.tickOffset:(t.g.select("path.domain").node().getTotalLength()-2*e.outerTickSize)/t.g.selectAll("line").size(),i===1/0?0:i},t.ticks=function(){return arguments.length?(e.tickArguments=arguments,t):e.tickArguments},t.tickCulling=function(i){return arguments.length?(e.tickCulling=i,t):e.tickCulling},t.tickValues=function(i){if("function"==typeof i)e.tickValues=function(){return i(e.scale.domain())};else{if(!arguments.length)return e.tickValues;e.tickValues=i}return t},t};var A=function(e){function i(e){s(this,i);var r={fn:n,internal:{fn:a}},o=d(this,(i.__proto__||Object.getPrototypeOf(i)).call(this,e,"axis",r));return o.d3=e.d3,o.internal=t,o}return c(i,e),i}(function(t,e,i){this.owner=t,L.chart.internal[e]=i});(n=A.prototype).init=function(){var t=this.owner,e=t.config,i=t.main;t.axes.x=i.append("g").attr("class",r.axis+" 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i,n=this.owner,a=n.config;return(a.axis_x_tick_fit||a.axis_x_tick_count)&&(i=this.generateTickValues(n.mapTargetsToUniqueXs(t),a.axis_x_tick_count,n.isTimeSeries())),e?e.tickValues(i):(n.xAxis.tickValues(i),n.subXAxis.tickValues(i)),i},n.getYAxis=function(t,e,i,n,a,r,o){var s=this.owner,c=s.config,d={withOuterTick:a,withoutTransition:r,tickTextRotate:o?0:c.axis_y_tick_rotate},l=new this.internal(this,d).axis.scale(t).orient(e).tickFormat(i);return s.isTimeSeriesY()?l.ticks(s.d3.time[c.axis_y_tick_time_value],c.axis_y_tick_time_interval):l.tickValues(n),l},n.getId=function(t){var e=this.owner.config;return t in e.data_axes?e.data_axes[t]:"y"},n.getXAxisTickFormat=function(){var t=this.owner,e=t.config,i=t.isTimeSeries()?t.defaultAxisTimeFormat:t.isCategorized()?t.categoryName:function(t){return t<0?t.toFixed(0):t};return e.axis_x_tick_format&&(u(e.axis_x_tick_format)?i=e.axis_x_tick_format:t.isTimeSeries()&&(i=function(i){return i?t.axisTimeFormat(e.axis_x_tick_format)(i):""})),u(i)?function(e){return i.call(t,e)}:i},n.getTickValues=function(t,e){return t||(e?e.tickValues():void 0)},n.getXAxisTickValues=function(){return this.getTickValues(this.owner.config.axis_x_tick_values,this.owner.xAxis)},n.getYAxisTickValues=function(){return this.getTickValues(this.owner.config.axis_y_tick_values,this.owner.yAxis)},n.getY2AxisTickValues=function(){return this.getTickValues(this.owner.config.axis_y2_tick_values,this.owner.y2Axis)},n.getLabelOptionByAxisId=function(t){var e,i=this.owner.config;return"y"===t?e=i.axis_y_label:"y2"===t?e=i.axis_y2_label:"x"===t&&(e=i.axis_x_label),e},n.getLabelText=function(t){var e=this.getLabelOptionByAxisId(t);return g(e)?e:e?e.text:null},n.setLabelText=function(t,e){var i=this.owner.config,n=this.getLabelOptionByAxisId(t);g(n)?"y"===t?i.axis_y_label=e:"y2"===t?i.axis_y2_label=e:"x"===t&&(i.axis_x_label=e):n&&(n.text=e)},n.getLabelPosition=function(t,e){var i=this.getLabelOptionByAxisId(t),n=i&&"object"===(void 0===i?"undefined":o(i))&&i.position?i.position:e;return{isInner:n.indexOf("inner")>=0,isOuter:n.indexOf("outer")>=0,isLeft:n.indexOf("left")>=0,isCenter:n.indexOf("center")>=0,isRight:n.indexOf("right")>=0,isTop:n.indexOf("top")>=0,isMiddle:n.indexOf("middle")>=0,isBottom:n.indexOf("bottom")>=0}},n.getXAxisLabelPosition=function(){return this.getLabelPosition("x",this.owner.config.axis_rotated?"inner-top":"inner-right")},n.getYAxisLabelPosition=function(){return this.getLabelPosition("y",this.owner.config.axis_rotated?"inner-right":"inner-top")},n.getY2AxisLabelPosition=function(){return this.getLabelPosition("y2",this.owner.config.axis_rotated?"inner-right":"inner-top")},n.getLabelPositionById=function(t){return"y2"===t?this.getY2AxisLabelPosition():"y"===t?this.getYAxisLabelPosition():this.getXAxisLabelPosition()},n.textForXAxisLabel=function(){return this.getLabelText("x")},n.textForYAxisLabel=function(){return this.getLabelText("y")},n.textForY2AxisLabel=function(){return this.getLabelText("y2")},n.xForAxisLabel=function(t,e){var i=this.owner;return t?e.isLeft?0:e.isCenter?i.width/2:i.width:e.isBottom?-i.height:e.isMiddle?-i.height/2:0},n.dxForAxisLabel=function(t,e){return t?e.isLeft?"0.5em":e.isRight?"-0.5em":"0":e.isTop?"-0.5em":e.isBottom?"0.5em":"0"},n.textAnchorForAxisLabel=function(t,e){return t?e.isLeft?"start":e.isCenter?"middle":"end":e.isBottom?"start":e.isMiddle?"middle":"end"},n.xForXAxisLabel=function(){return this.xForAxisLabel(!this.owner.config.axis_rotated,this.getXAxisLabelPosition())},n.xForYAxisLabel=function(){return this.xForAxisLabel(this.owner.config.axis_rotated,this.getYAxisLabelPosition())},n.xForY2AxisLabel=function(){return this.xForAxisLabel(this.owner.config.axis_rotated,this.getY2AxisLabelPosition())},n.dxForXAxisLabel=function(){return this.dxForAxisLabel(!this.owner.config.axis_rotated,this.getXAxisLabelPosition())},n.dxForYAxisLabel=function(){return this.dxForAxisLabel(this.owner.config.axis_rotated,this.getYAxisLabelPosition())},n.dxForY2AxisLabel=function(){return this.dxForAxisLabel(this.owner.config.axis_rotated,this.getY2AxisLabelPosition())},n.dyForXAxisLabel=function(){var t=this.owner.config,e=this.getXAxisLabelPosition();return t.axis_rotated?e.isInner?"1.2em":-25-this.getMaxTickWidth("x"):e.isInner?"-0.5em":t.axis_x_height?t.axis_x_height-10:"3em"},n.dyForYAxisLabel=function(){var t=this.owner,e=this.getYAxisLabelPosition();return t.config.axis_rotated?e.isInner?"-0.5em":"3em":e.isInner?"1.2em":-10-(t.config.axis_y_inner?0:this.getMaxTickWidth("y")+10)},n.dyForY2AxisLabel=function(){var t=this.owner,e=this.getY2AxisLabelPosition();return t.config.axis_rotated?e.isInner?"1.2em":"-2.2em":e.isInner?"-0.5em":15+(t.config.axis_y2_inner?0:this.getMaxTickWidth("y2")+15)},n.textAnchorForXAxisLabel=function(){var t=this.owner;return this.textAnchorForAxisLabel(!t.config.axis_rotated,this.getXAxisLabelPosition())},n.textAnchorForYAxisLabel=function(){var t=this.owner;return this.textAnchorForAxisLabel(t.config.axis_rotated,this.getYAxisLabelPosition())},n.textAnchorForY2AxisLabel=function(){var t=this.owner;return this.textAnchorForAxisLabel(t.config.axis_rotated,this.getY2AxisLabelPosition())},n.getMaxTickWidth=function(t,e){var i,n,a,r,o=this.owner,s=o.config,c=0;return e&&o.currentMaxTickWidths[t]?o.currentMaxTickWidths[t]:(o.svg&&(i=o.filterTargetsToShow(o.data.targets),"y"===t?(n=o.y.copy().domain(o.getYDomain(i,"y")),a=this.getYAxis(n,o.yOrient,s.axis_y_tick_format,o.yAxisTickValues,!1,!0,!0)):"y2"===t?(n=o.y2.copy().domain(o.getYDomain(i,"y2")),a=this.getYAxis(n,o.y2Orient,s.axis_y2_tick_format,o.y2AxisTickValues,!1,!0,!0)):(n=o.x.copy().domain(o.getXDomain(i)),a=this.getXAxis(n,o.xOrient,o.xAxisTickFormat,o.xAxisTickValues,!1,!0,!0),this.updateXAxisTickValues(i,a)),(r=o.d3.select("body").append("div").classed("c3",!0)).append("svg").style("visibility","hidden").style("position","fixed").style("top",0).style("left",0).append("g").call(a).each(function(){o.d3.select(this).selectAll("text").each(function(){var t=this.getBoundingClientRect();c<t.width&&(c=t.width)}),r.remove()})),o.currentMaxTickWidths[t]=c<=0?o.currentMaxTickWidths[t]:c,o.currentMaxTickWidths[t])},n.updateLabels=function(t){var e=this.owner,i=e.main.select("."+r.axisX+" ."+r.axisXLabel),n=e.main.select("."+r.axisY+" ."+r.axisYLabel),a=e.main.select("."+r.axisY2+" ."+r.axisY2Label);(t?i.transition():i).attr("x",this.xForXAxisLabel.bind(this)).attr("dx",this.dxForXAxisLabel.bind(this)).attr("dy",this.dyForXAxisLabel.bind(this)).text(this.textForXAxisLabel.bind(this)),(t?n.transition():n).attr("x",this.xForYAxisLabel.bind(this)).attr("dx",this.dxForYAxisLabel.bind(this)).attr("dy",this.dyForYAxisLabel.bind(this)).text(this.textForYAxisLabel.bind(this)),(t?a.transition():a).attr("x",this.xForY2AxisLabel.bind(this)).attr("dx",this.dxForY2AxisLabel.bind(this)).attr("dy",this.dyForY2AxisLabel.bind(this)).text(this.textForY2AxisLabel.bind(this))},n.getPadding=function(t,e,i,n){var a="number"==typeof t?t:t[e];return l(a)?"ratio"===t.unit?t[e]*n:this.convertPixelsToAxisPadding(a,n):i},n.convertPixelsToAxisPadding=function(t,e){var i=this.owner;return e*(t/(i.config.axis_rotated?i.width:i.height))},n.generateTickValues=function(t,e,i){var n,a,r,o,s,c,d,l=t;if(e)if(1===(n=u(e)?e():e))l=[t[0]];else if(2===n)l=[t[0],t[t.length-1]];else if(n>2){for(o=n-2,a=t[0],s=((r=t[t.length-1])-a)/(o+1),l=[a],c=0;c<o;c++)d=+a+s*(c+1),l.push(i?new Date(d):d);l.push(r)}return i||(l=l.sort(function(t,e){return t-e})),l},n.generateTransitions=function(t){var e=this.owner.axes;return{axisX:t?e.x.transition().duration(t):e.x,axisY:t?e.y.transition().duration(t):e.y,axisY2:t?e.y2.transition().duration(t):e.y2,axisSubX:t?e.subx.transition().duration(t):e.subx}},n.redraw=function(t,e){var i=this.owner;i.axes.x.style("opacity",e?0:1),i.axes.y.style("opacity",e?0:1),i.axes.y2.style("opacity",e?0:1),i.axes.subx.style("opacity",e?0:1),t.axisX.call(i.xAxis),t.axisY.call(i.yAxis),t.axisY2.call(i.y2Axis),t.axisSubX.call(i.subXAxis)};var P,C,L={version:"0.4.18"};return L.generate=function(t){return new e(t)},L.chart={fn:e.prototype,internal:{fn:i.prototype}},P=L.chart.fn,C=L.chart.internal.fn,C.beforeInit=function(){},C.afterInit=function(){},C.init=function(){var t=this,e=t.config;if(t.initParams(),e.data_url)t.convertUrlToData(e.data_url,e.data_mimeType,e.data_headers,e.data_keys,t.initWithData);else if(e.data_json)t.initWithData(t.convertJsonToData(e.data_json,e.data_keys));else if(e.data_rows)t.initWithData(t.convertRowsToData(e.data_rows));else{if(!e.data_columns)throw Error("url or json or rows or columns is required.");t.initWithData(t.convertColumnsToData(e.data_columns))}},C.initParams=function(){var t=this,e=t.d3,i=t.config;t.clipId="c3-"+ +new 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this._y2},set:function(t){this._y2=t,this._segmentChanged()},enumerable:!0}),window.SVGPathSegCurvetoQuadraticSmoothAbs=function(t,e,i){window.SVGPathSeg.call(this,window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS,"T",t),this._x=e,this._y=i},window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype=Object.create(window.SVGPathSeg.prototype),window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype.toString=function(){return"[object SVGPathSegCurvetoQuadraticSmoothAbs]"},window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype._asPathString=function(){return this.pathSegTypeAsLetter+" "+this._x+" "+this._y},window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype.clone=function(){return new window.SVGPathSegCurvetoQuadraticSmoothAbs(void 0,this._x,this._y)},Object.defineProperty(window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype,"x",{get:function(){return 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window.SVGPathSegLinetoHorizontalAbs(void 0,t)},window.SVGPathElement.prototype.createSVGPathSegLinetoHorizontalRel=function(t){return new window.SVGPathSegLinetoHorizontalRel(void 0,t)},window.SVGPathElement.prototype.createSVGPathSegLinetoVerticalAbs=function(t){return new window.SVGPathSegLinetoVerticalAbs(void 0,t)},window.SVGPathElement.prototype.createSVGPathSegLinetoVerticalRel=function(t){return new window.SVGPathSegLinetoVerticalRel(void 0,t)},window.SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothAbs=function(t,e,i,n){return new window.SVGPathSegCurvetoCubicSmoothAbs(void 0,t,e,i,n)},window.SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothRel=function(t,e,i,n){return new window.SVGPathSegCurvetoCubicSmoothRel(void 0,t,e,i,n)},window.SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothAbs=function(t,e){return new window.SVGPathSegCurvetoQuadraticSmoothAbs(void 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e=!1;t.forEach(function(t){"d"==t.attributeName&&(e=!0)}),e&&(this._list=this._parsePath(this._pathElement.getAttribute("d")))}},window.SVGPathSegList.prototype._writeListToPath=function(){this._pathElementMutationObserver.disconnect(),this._pathElement.setAttribute("d",window.SVGPathSegList._pathSegArrayAsString(this._list)),this._pathElementMutationObserver.observe(this._pathElement,this._mutationObserverConfig)},window.SVGPathSegList.prototype.segmentChanged=function(t){this._writeListToPath()},window.SVGPathSegList.prototype.clear=function(){this._checkPathSynchronizedToList(),this._list.forEach(function(t){t._owningPathSegList=null}),this._list=[],this._writeListToPath()},window.SVGPathSegList.prototype.initialize=function(t){return this._checkPathSynchronizedToList(),this._list=[t],t._owningPathSegList=this,this._writeListToPath(),t},window.SVGPathSegList.prototype._checkValidIndex=function(t){if(isNaN(t)||t<0||t>=this.numberOfItems)throw"INDEX_SIZE_ERR"},window.SVGPathSegList.prototype.getItem=function(t){return this._checkPathSynchronizedToList(),this._checkValidIndex(t),this._list[t]},window.SVGPathSegList.prototype.insertItemBefore=function(t,e){return this._checkPathSynchronizedToList(),e>this.numberOfItems&&(e=this.numberOfItems),t._owningPathSegList&&(t=t.clone()),this._list.splice(e,0,t),t._owningPathSegList=this,this._writeListToPath(),t},window.SVGPathSegList.prototype.replaceItem=function(t,e){return this._checkPathSynchronizedToList(),t._owningPathSegList&&(t=t.clone()),this._checkValidIndex(e),this._list[e]=t,t._owningPathSegList=this,this._writeListToPath(),t},window.SVGPathSegList.prototype.removeItem=function(t){this._checkPathSynchronizedToList(),this._checkValidIndex(t);var e=this._list[t];return this._list.splice(t,1),this._writeListToPath(),e},window.SVGPathSegList.prototype.appendItem=function(t){return this._checkPathSynchronizedToList(),t._owningPathSegList&&(t=t.clone()),this._list.push(t),t._owningPathSegList=this,this._writeListToPath(),t},window.SVGPathSegList._pathSegArrayAsString=function(t){var e="",i=!0;return t.forEach(function(t){i?(i=!1,e+=t._asPathString()):e+=" "+t._asPathString()}),e},window.SVGPathSegList.prototype._parsePath=function(t){if(!t||0==t.length)return[];var e=this,i=function(){this.pathSegList=[]};i.prototype.appendSegment=function(t){this.pathSegList.push(t)};var n=function(t){this._string=t,this._currentIndex=0,this._endIndex=this._string.length,this._previousCommand=window.SVGPathSeg.PATHSEG_UNKNOWN,this._skipOptionalSpaces()};n.prototype._isCurrentSpace=function(){var t=this._string[this._currentIndex];return t<=" "&&(" 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window.SVGPathSeg.PATHSEG_MOVETO_REL;case"L":return window.SVGPathSeg.PATHSEG_LINETO_ABS;case"l":return window.SVGPathSeg.PATHSEG_LINETO_REL;case"C":return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;case"c":return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;case"Q":return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;case"q":return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;case"A":return window.SVGPathSeg.PATHSEG_ARC_ABS;case"a":return window.SVGPathSeg.PATHSEG_ARC_REL;case"H":return window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;case"h":return window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;case"V":return window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;case"v":return window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;case"S":return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;case"s":return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;case"T":return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;case"t":return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;default:return window.SVGPathSeg.PATHSEG_UNKNOWN}},n.prototype._nextCommandHelper=function(t,e){return("+"==t||"-"==t||"."==t||t>="0"&&t<="9")&&e!=window.SVGPathSeg.PATHSEG_CLOSEPATH?e==window.SVGPathSeg.PATHSEG_MOVETO_ABS?window.SVGPathSeg.PATHSEG_LINETO_ABS:e==window.SVGPathSeg.PATHSEG_MOVETO_REL?window.SVGPathSeg.PATHSEG_LINETO_REL:e:window.SVGPathSeg.PATHSEG_UNKNOWN},n.prototype.initialCommandIsMoveTo=function(){if(!this.hasMoreData())return!0;var t=this.peekSegmentType();return t==window.SVGPathSeg.PATHSEG_MOVETO_ABS||t==window.SVGPathSeg.PATHSEG_MOVETO_REL},n.prototype._parseNumber=function(){var t=0,e=0,i=1,n=0,a=1,r=1,o=this._currentIndex;if(this._skipOptionalSpaces(),this._currentIndex<this._endIndex&&"+"==this._string.charAt(this._currentIndex)?this._currentIndex++:this._currentIndex<this._endIndex&&"-"==this._string.charAt(this._currentIndex)&&(this._currentIndex++,a=-1),!(this._currentIndex==this._endIndex||(this._string.charAt(this._currentIndex)<"0"||this._string.charAt(this._currentIndex)>"9")&&"."!=this._string.charAt(this._currentIndex))){for(var s=this._currentIndex;this._currentIndex<this._endIndex&&this._string.charAt(this._currentIndex)>="0"&&this._string.charAt(this._currentIndex)<="9";)this._currentIndex++;if(this._currentIndex!=s)for(var c=this._currentIndex-1,d=1;c>=s;)e+=d*(this._string.charAt(c--)-"0"),d*=10;if(this._currentIndex<this._endIndex&&"."==this._string.charAt(this._currentIndex)){if(++this._currentIndex>=this._endIndex||this._string.charAt(this._currentIndex)<"0"||this._string.charAt(this._currentIndex)>"9")return;for(;this._currentIndex<this._endIndex&&this._string.charAt(this._currentIndex)>="0"&&this._string.charAt(this._currentIndex)<="9";)i*=10,n+=(this._string.charAt(this._currentIndex)-"0")/i,this._currentIndex+=1}if(this._currentIndex!=o&&this._currentIndex+1<this._endIndex&&("e"==this._string.charAt(this._currentIndex)||"E"==this._string.charAt(this._currentIndex))&&"x"!=this._string.charAt(this._currentIndex+1)&&"m"!=this._string.charAt(this._currentIndex+1)){if(this._currentIndex++,"+"==this._string.charAt(this._currentIndex)?this._currentIndex++:"-"==this._string.charAt(this._currentIndex)&&(this._currentIndex++,r=-1),this._currentIndex>=this._endIndex||this._string.charAt(this._currentIndex)<"0"||this._string.charAt(this._currentIndex)>"9")return;for(;this._currentIndex<this._endIndex&&this._string.charAt(this._currentIndex)>="0"&&this._string.charAt(this._currentIndex)<="9";)t*=10,t+=this._string.charAt(this._currentIndex)-"0",this._currentIndex++}var l=e+n;if(l*=a,t&&(l*=Math.pow(10,r*t)),o!=this._currentIndex)return this._skipOptionalSpacesOrDelimiter(),l}},n.prototype._parseArcFlag=function(){if(!(this._currentIndex>=this._endIndex)){var t=!1,e=this._string.charAt(this._currentIndex++);if("0"==e)t=!1;else{if("1"!=e)return;t=!0}return this._skipOptionalSpacesOrDelimiter(),t}},n.prototype.parseSegment=function(){var t=this._string[this._currentIndex],i=this._pathSegTypeFromChar(t);if(i==window.SVGPathSeg.PATHSEG_UNKNOWN){if(this._previousCommand==window.SVGPathSeg.PATHSEG_UNKNOWN)return null;if((i=this._nextCommandHelper(t,this._previousCommand))==window.SVGPathSeg.PATHSEG_UNKNOWN)return null}else this._currentIndex++;switch(this._previousCommand=i,i){case window.SVGPathSeg.PATHSEG_MOVETO_REL:return new window.SVGPathSegMovetoRel(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_MOVETO_ABS:return new window.SVGPathSegMovetoAbs(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_REL:return new window.SVGPathSegLinetoRel(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_ABS:return new window.SVGPathSegLinetoAbs(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL:return new window.SVGPathSegLinetoHorizontalRel(e,this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS:return new window.SVGPathSegLinetoHorizontalAbs(e,this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL:return new window.SVGPathSegLinetoVerticalRel(e,this._parseNumber());case window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS:return new window.SVGPathSegLinetoVerticalAbs(e,this._parseNumber());case window.SVGPathSeg.PATHSEG_CLOSEPATH:return this._skipOptionalSpaces(),new window.SVGPathSegClosePath(e);case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL:return n={x1:this._parseNumber(),y1:this._parseNumber(),x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoCubicRel(e,n.x,n.y,n.x1,n.y1,n.x2,n.y2);case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:return n={x1:this._parseNumber(),y1:this._parseNumber(),x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoCubicAbs(e,n.x,n.y,n.x1,n.y1,n.x2,n.y2);case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:return n={x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoCubicSmoothRel(e,n.x,n.y,n.x2,n.y2);case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:return n={x2:this._parseNumber(),y2:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoCubicSmoothAbs(e,n.x,n.y,n.x2,n.y2);case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL:return n={x1:this._parseNumber(),y1:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoQuadraticRel(e,n.x,n.y,n.x1,n.y1);case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:return n={x1:this._parseNumber(),y1:this._parseNumber(),x:this._parseNumber(),y:this._parseNumber()},new window.SVGPathSegCurvetoQuadraticAbs(e,n.x,n.y,n.x1,n.y1);case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:return new window.SVGPathSegCurvetoQuadraticSmoothRel(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:return new window.SVGPathSegCurvetoQuadraticSmoothAbs(e,this._parseNumber(),this._parseNumber());case window.SVGPathSeg.PATHSEG_ARC_REL:return n={x1:this._parseNumber(),y1:this._parseNumber(),arcAngle:this._parseNumber(),arcLarge:this._parseArcFlag(),arcSweep:this._parseArcFlag(),x:this._parseNumber(),y:this._parseNumber()},new 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o.shouldShowArcLabel()?(e=o.updateAngle(t),i=e?e.value:null,n=o.getArcRatio(e),a=t.data.id,o.hasType("gauge")||o.meetsArcLabelThreshold(n)?(r=o.getArcLabelFormat(),r?r(i,n,a):o.defaultArcValueFormat(i,n)):""):""},C.textForGaugeMinMax=function(t,e){var i=this.getGaugeLabelExtents();return i?i(t,e):t},C.expandArc=function(t){var e,i=this;i.transiting?e=window.setInterval(function(){i.transiting||(window.clearInterval(e),i.legend.selectAll(".c3-legend-item-focused").size()>0&&i.expandArc(t))},10):(t=i.mapToTargetIds(t),i.svg.selectAll(i.selectorTargets(t,"."+r.chartArc)).each(function(t){i.shouldExpand(t.data.id)&&i.d3.select(this).selectAll("path").transition().duration(i.expandDuration(t.data.id)).attr("d",i.svgArcExpanded).transition().duration(2*i.expandDuration(t.data.id)).attr("d",i.svgArcExpandedSub).each(function(t){i.isDonutType(t.data)})}))},C.unexpandArc=function(t){var e=this;e.transiting||(t=e.mapToTargetIds(t),e.svg.selectAll(e.selectorTargets(t,"."+r.chartArc)).selectAll("path").transition().duration(function(t){return e.expandDuration(t.data.id)}).attr("d",e.svgArc),e.svg.selectAll("."+r.arc))},C.expandDuration=function(t){var e=this,i=e.config;return e.isDonutType(t)?i.donut_expand_duration:e.isGaugeType(t)?i.gauge_expand_duration:e.isPieType(t)?i.pie_expand_duration:50},C.shouldExpand=function(t){var e=this,i=e.config;return e.isDonutType(t)&&i.donut_expand||e.isGaugeType(t)&&i.gauge_expand||e.isPieType(t)&&i.pie_expand},C.shouldShowArcLabel=function(){var t=this,e=t.config,i=!0;return t.hasType("donut")?i=e.donut_label_show:t.hasType("pie")&&(i=e.pie_label_show),i},C.meetsArcLabelThreshold=function(t){var e=this,i=e.config;return t>=(e.hasType("donut")?i.donut_label_threshold:i.pie_label_threshold)},C.getArcLabelFormat=function(){var t=this,e=t.config,i=e.pie_label_format;return t.hasType("gauge")?i=e.gauge_label_format:t.hasType("donut")&&(i=e.donut_label_format),i},C.getGaugeLabelExtents=function(){return this.config.gauge_label_extents},C.getArcTitle=function(){var t=this;return t.hasType("donut")?t.config.donut_title:""},C.updateTargetsForArc=function(t){var e,i=this,n=i.main,a=i.classChartArc.bind(i),o=i.classArcs.bind(i),s=i.classFocus.bind(i);(e=n.select("."+r.chartArcs).selectAll("."+r.chartArc).data(i.pie(t)).attr("class",function(t){return a(t)+s(t.data)}).enter().append("g").attr("class",a)).append("g").attr("class",o),e.append("text").attr("dy",i.hasType("gauge")?"-.1em":".35em").style("opacity",0).style("text-anchor","middle").style("pointer-events","none")},C.initArc=function(){var t=this;t.arcs=t.main.select("."+r.chart).append("g").attr("class",r.chartArcs).attr("transform",t.getTranslate("arc")),t.arcs.append("text").attr("class",r.chartArcsTitle).style("text-anchor","middle").text(t.getArcTitle())},C.redrawArc=function(t,e,i){var n,a=this,o=a.d3,s=a.config,c=a.main;(n=c.selectAll("."+r.arcs).selectAll("."+r.arc).data(a.arcData.bind(a))).enter().append("path").attr("class",a.classArc.bind(a)).style("fill",function(t){return a.color(t.data)}).style("cursor",function(t){return s.interaction_enabled&&s.data_selection_isselectable(t)?"pointer":null}).each(function(t){a.isGaugeType(t.data)&&(t.startAngle=t.endAngle=s.gauge_startingAngle),this._current=t}),n.attr("transform",function(t){return!a.isGaugeType(t.data)&&i?"scale(0)":""}).on("mouseover",s.interaction_enabled?function(t){var e,i;a.transiting||(e=a.updateAngle(t))&&(i=a.convertToArcData(e),a.expandArc(e.data.id),a.api.focus(e.data.id),a.toggleFocusLegend(e.data.id,!0),a.config.data_onmouseover(i,this))}:null).on("mousemove",s.interaction_enabled?function(t){var e,i=a.updateAngle(t);i&&(e=[a.convertToArcData(i)],a.showTooltip(e,this))}:null).on("mouseout",s.interaction_enabled?function(t){var e,i;a.transiting||(e=a.updateAngle(t))&&(i=a.convertToArcData(e),a.unexpandArc(e.data.id),a.api.revert(),a.revertLegend(),a.hideTooltip(),a.config.data_onmouseout(i,this))}:null).on("click",s.interaction_enabled?function(t,e){var i,n=a.updateAngle(t);n&&(i=a.convertToArcData(n),a.toggleShape&&a.toggleShape(this,i,e),a.config.data_onclick.call(a.api,i,this))}:null).each(function(){a.transiting=!0}).transition().duration(t).attrTween("d",function(t){var e,i=a.updateAngle(t);return i?(isNaN(this._current.startAngle)&&(this._current.startAngle=0),isNaN(this._current.endAngle)&&(this._current.endAngle=this._current.startAngle),e=o.interpolate(this._current,i),this._current=e(0),function(i){var n=e(i);return n.data=t.data,a.getArc(n,!0)}):function(){return"M 0 0"}}).attr("transform",i?"scale(1)":"").style("fill",function(t){return a.levelColor?a.levelColor(t.data.values[0].value):a.color(t.data.id)}).call(a.endall,function(){a.transiting=!1}),n.exit().transition().duration(e).style("opacity",0).remove(),c.selectAll("."+r.chartArc).select("text").style("opacity",0).attr("class",function(t){return a.isGaugeType(t.data)?r.gaugeValue:""}).text(a.textForArcLabel.bind(a)).attr("transform",a.transformForArcLabel.bind(a)).style("font-size",function(t){return a.isGaugeType(t.data)?Math.round(a.radius/5)+"px":""}).transition().duration(t).style("opacity",function(t){return a.isTargetToShow(t.data.id)&&a.isArcType(t.data)?1:0}),c.select("."+r.chartArcsTitle).style("opacity",a.hasType("donut")||a.hasType("gauge")?1:0),a.hasType("gauge")&&(a.arcs.select("."+r.chartArcsBackground).attr("d",function(){var t={data:[{value:s.gauge_max}],startAngle:s.gauge_startingAngle,endAngle:-1*s.gauge_startingAngle};return a.getArc(t,!0,!0)}),a.arcs.select("."+r.chartArcsGaugeUnit).attr("dy",".75em").text(s.gauge_label_show?s.gauge_units:""),a.arcs.select("."+r.chartArcsGaugeMin).attr("dx",-1*(a.innerRadius+(a.radius-a.innerRadius)/(s.gauge_fullCircle?1:2))+"px").attr("dy","1.2em").text(s.gauge_label_show?a.textForGaugeMinMax(s.gauge_min,!1):""),a.arcs.select("."+r.chartArcsGaugeMax).attr("dx",a.innerRadius+(a.radius-a.innerRadius)/(s.gauge_fullCircle?1:2)+"px").attr("dy","1.2em").text(s.gauge_label_show?a.textForGaugeMinMax(s.gauge_max,!0):""))},C.initGauge=function(){var t=this.arcs;this.hasType("gauge")&&(t.append("path").attr("class",r.chartArcsBackground),t.append("text").attr("class",r.chartArcsGaugeUnit).style("text-anchor","middle").style("pointer-events","none"),t.append("text").attr("class",r.chartArcsGaugeMin).style("text-anchor","middle").style("pointer-events","none"),t.append("text").attr("class",r.chartArcsGaugeMax).style("text-anchor","middle").style("pointer-events","none"))},C.getGaugeLabelHeight=function(){return this.config.gauge_label_show?20:0},C.hasCaches=function(t){for(var e=0;e<t.length;e++)if(!(t[e]in this.cache))return!1;return!0},C.addCache=function(t,e){this.cache[t]=this.cloneTarget(e)},C.getCaches=function(t){var e,i=[];for(e=0;e<t.length;e++)t[e]in this.cache&&i.push(this.cloneTarget(this.cache[t[e]]));return i},C.categoryName=function(t){var e=this.config;return t<e.axis_x_categories.length?e.axis_x_categories[t]:t},C.generateClass=function(t,e){return" "+t+" 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this.classShapes(t.data)+this.generateClass(r.arcs,t.data.id)},C.classArea=function(t){return this.classShape(t)+this.generateClass(r.area,t.id)},C.classAreas=function(t){return this.classShapes(t)+this.generateClass(r.areas,t.id)},C.classRegion=function(t,e){return this.generateClass(r.region,e)+" "+("class"in t?t.class:"")},C.classEvent=function(t){return this.generateClass(r.eventRect,t.index)},C.classTarget=function(t){var e=this,i=e.config.data_classes[t],n="";return i&&(n=" "+r.target+"-"+i),e.generateClass(r.target,t)+n},C.classFocus=function(t){return this.classFocused(t)+this.classDefocused(t)},C.classFocused=function(t){return" "+(this.focusedTargetIds.indexOf(t.id)>=0?r.focused:"")},C.classDefocused=function(t){return" "+(this.defocusedTargetIds.indexOf(t.id)>=0?r.defocused:"")},C.classChartText=function(t){return r.chartText+this.classTarget(t.id)},C.classChartLine=function(t){return r.chartLine+this.classTarget(t.id)},C.classChartBar=function(t){return r.chartBar+this.classTarget(t.id)},C.classChartArc=function(t){return r.chartArc+this.classTarget(t.data.id)},C.getTargetSelectorSuffix=function(t){return t||0===t?("-"+t).replace(/[\s?!@#$%^&*()_=+,.<>'":;\[\]\/|~`{}\\]/g,"-"):""},C.selectorTarget=function(t,e){return(e||"")+"."+r.target+this.getTargetSelectorSuffix(t)},C.selectorTargets=function(t,e){var i=this;return t=t||[],t.length?t.map(function(t){return i.selectorTarget(t,e)}):null},C.selectorLegend=function(t){return"."+r.legendItem+this.getTargetSelectorSuffix(t)},C.selectorLegends=function(t){var e=this;return t&&t.length?t.map(function(t){return e.selectorLegend(t)}):null},C.getClipPath=function(t){return"url("+(window.navigator.appVersion.toLowerCase().indexOf("msie 9.")>=0?"":document.URL.split("#")[0])+"#"+t+")"},C.appendClip=function(t,e){return t.append("clipPath").attr("id",e).append("rect")},C.getAxisClipX=function(t){var e=Math.max(30,this.margin.left);return t?-(1+e):-(e-1)},C.getAxisClipY=function(t){return t?-20:-this.margin.top},C.getXAxisClipX=function(){var t=this;return t.getAxisClipX(!t.config.axis_rotated)},C.getXAxisClipY=function(){var t=this;return t.getAxisClipY(!t.config.axis_rotated)},C.getYAxisClipX=function(){var t=this;return t.config.axis_y_inner?-1:t.getAxisClipX(t.config.axis_rotated)},C.getYAxisClipY=function(){var t=this;return t.getAxisClipY(t.config.axis_rotated)},C.getAxisClipWidth=function(t){var e=this,i=Math.max(30,e.margin.left),n=Math.max(30,e.margin.right);return t?e.width+2+i+n:e.margin.left+20},C.getAxisClipHeight=function(t){return(t?this.margin.bottom:this.margin.top+this.height)+20},C.getXAxisClipWidth=function(){var t=this;return t.getAxisClipWidth(!t.config.axis_rotated)},C.getXAxisClipHeight=function(){var t=this;return t.getAxisClipHeight(!t.config.axis_rotated)},C.getYAxisClipWidth=function(){var t=this;return t.getAxisClipWidth(t.config.axis_rotated)+(t.config.axis_y_inner?20:0)},C.getYAxisClipHeight=function(){var t=this;return 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0,zoom_privileged:!1,zoom_rescale:!1,zoom_onzoom:function(){},zoom_onzoomstart:function(){},zoom_onzoomend:function(){},zoom_x_min:void 0,zoom_x_max:void 0,interaction_brighten:!0,interaction_enabled:!0,onmouseover:function(){},onmouseout:function(){},onresize:function(){},onresized:function(){},oninit:function(){},onrendered:function(){},transition_duration:350,data_x:void 0,data_xs:{},data_xFormat:"%Y-%m-%d",data_xLocaltime:!0,data_xSort:!0,data_idConverter:function(t){return t},data_names:{},data_classes:{},data_groups:[],data_axes:{},data_type:void 0,data_types:{},data_labels:{},data_order:"desc",data_regions:{},data_color:void 0,data_colors:{},data_hide:!1,data_filter:void 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Date(a.getTime()+r.right):a+r.right),[o,s]},C.updateXDomain=function(t,e,i,n,a){var r=this,o=r.config;return i&&(r.x.domain(a||r.d3.extent(r.getXDomain(t))),r.orgXDomain=r.x.domain(),o.zoom_enabled&&r.zoom.scale(r.x).updateScaleExtent(),r.subX.domain(r.x.domain()),r.brush&&r.brush.scale(r.subX)),e&&(r.x.domain(a||(!r.brush||r.brush.empty()?r.orgXDomain:r.brush.extent())),o.zoom_enabled&&r.zoom.scale(r.x).updateScaleExtent()),n&&r.x.domain(r.trimXDomain(r.x.orgDomain())),r.x.domain()},C.trimXDomain=function(t){var e=this.getZoomDomain(),i=e[0],n=e[1];return t[0]<=i&&(t[1]=+t[1]+(i-t[0]),t[0]=i),n<=t[1]&&(t[0]=+t[0]-(t[1]-n),t[1]=n),t},C.drag=function(t){var e,i,n,a,o,s,c,d,l=this,u=l.config,h=l.main,g=l.d3;l.hasArcType()||u.data_selection_enabled&&(u.zoom_enabled&&!l.zoom.altDomain||u.data_selection_multiple&&(e=l.dragStart[0],i=l.dragStart[1],n=t[0],a=t[1],o=Math.min(e,n),s=Math.max(e,n),c=u.data_selection_grouped?l.margin.top:Math.min(i,a),d=u.data_selection_grouped?l.height:Math.max(i,a),h.select("."+r.dragarea).attr("x",o).attr("y",c).attr("width",s-o).attr("height",d-c),h.selectAll("."+r.shapes).selectAll("."+r.shape).filter(function(t){return u.data_selection_isselectable(t)}).each(function(t,e){var i,n,a,u,h,f,p=g.select(this),_=p.classed(r.SELECTED),x=p.classed(r.INCLUDED),m=!1;if(p.classed(r.circle))i=1*p.attr("cx"),n=1*p.attr("cy"),h=l.togglePoint,m=o<i&&i<s&&c<n&&n<d;else{if(!p.classed(r.bar))return;i=(f=T(this)).x,n=f.y,a=f.width,u=f.height,h=l.togglePath,m=!(s<i||i+a<o||d<n||n+u<c)}m^x&&(p.classed(r.INCLUDED,!x),p.classed(r.SELECTED,!_),h.call(l,!_,p,t,e))})))},C.dragstart=function(t){var e=this,i=e.config;e.hasArcType()||i.data_selection_enabled&&(e.dragStart=t,e.main.select("."+r.chart).append("rect").attr("class",r.dragarea).style("opacity",.1),e.dragging=!0)},C.dragend=function(){var t=this,e=t.config;t.hasArcType()||e.data_selection_enabled&&(t.main.select("."+r.dragarea).transition().duration(100).style("opacity",0).remove(),t.main.selectAll("."+r.shape).classed(r.INCLUDED,!1),t.dragging=!1)},C.getYFormat=function(t){var e=this,i=t&&!e.hasType("gauge")?e.defaultArcValueFormat:e.yFormat,n=t&&!e.hasType("gauge")?e.defaultArcValueFormat:e.y2Format;return function(t,a,r){return("y2"===e.axis.getId(r)?n:i).call(e,t,a)}},C.yFormat=function(t){var e=this,i=e.config;return(i.axis_y_tick_format?i.axis_y_tick_format:e.defaultValueFormat)(t)},C.y2Format=function(t){var e=this,i=e.config;return(i.axis_y2_tick_format?i.axis_y2_tick_format:e.defaultValueFormat)(t)},C.defaultValueFormat=function(t){return l(t)?+t:""},C.defaultArcValueFormat=function(t,e){return(100*e).toFixed(1)+"%"},C.dataLabelFormat=function(t){var e=this.config.data_labels,i=function(t){return l(t)?+t:""};return"function"==typeof e.format?e.format:"object"===o(e.format)?e.format[t]?!0===e.format[t]?i:e.format[t]:function(){return""}:i},C.initGrid=function(){var t=this,e=t.config,i=t.d3;t.grid=t.main.append("g").attr("clip-path",t.clipPathForGrid).attr("class",r.grid),e.grid_x_show&&t.grid.append("g").attr("class",r.xgrids),e.grid_y_show&&t.grid.append("g").attr("class",r.ygrids),e.grid_focus_show&&t.grid.append("g").attr("class",r.xgridFocus).append("line").attr("class",r.xgridFocus),t.xgrid=i.selectAll([]),e.grid_lines_front||t.initGridLines()},C.initGridLines=function(){var t=this,e=t.d3;t.gridLines=t.main.append("g").attr("clip-path",t.clipPathForGrid).attr("class",r.grid+" 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t=this,e=t.config,i=t.yAxis.tickValues()||t.y.ticks(e.grid_y_ticks);t.ygrid=t.main.select("."+r.ygrids).selectAll("."+r.ygrid).data(i),t.ygrid.enter().append("line").attr("class",r.ygrid),t.ygrid.attr("x1",e.axis_rotated?t.y:0).attr("x2",e.axis_rotated?t.y:t.width).attr("y1",e.axis_rotated?0:t.y).attr("y2",e.axis_rotated?t.height:t.y),t.ygrid.exit().remove(),t.smoothLines(t.ygrid,"grid")},C.gridTextAnchor=function(t){return t.position?t.position:"end"},C.gridTextDx=function(t){return"start"===t.position?4:"middle"===t.position?0:-4},C.xGridTextX=function(t){return"start"===t.position?-this.height:"middle"===t.position?-this.height/2:0},C.yGridTextX=function(t){return"start"===t.position?0:"middle"===t.position?this.width/2:this.width},C.updateGrid=function(t){var e,i,n,a=this,o=a.main,s=a.config;a.grid.style("visibility",a.hasArcType()?"hidden":"visible"),o.select("line."+r.xgridFocus).style("visibility","hidden"),s.grid_x_show&&a.updateXGrid(),a.xgridLines=o.select("."+r.xgridLines).selectAll("."+r.xgridLine).data(s.grid_x_lines),(e=a.xgridLines.enter().append("g").attr("class",function(t){return r.xgridLine+(t.class?" "+t.class:"")})).append("line").style("opacity",0),e.append("text").attr("text-anchor",a.gridTextAnchor).attr("transform",s.axis_rotated?"":"rotate(-90)").attr("dx",a.gridTextDx).attr("dy",-5).style("opacity",0),a.xgridLines.exit().transition().duration(t).style("opacity",0).remove(),s.grid_y_show&&a.updateYGrid(),a.ygridLines=o.select("."+r.ygridLines).selectAll("."+r.ygridLine).data(s.grid_y_lines),(i=a.ygridLines.enter().append("g").attr("class",function(t){return r.ygridLine+(t.class?" "+t.class:"")})).append("line").style("opacity",0),i.append("text").attr("text-anchor",a.gridTextAnchor).attr("transform",s.axis_rotated?"rotate(-90)":"").attr("dx",a.gridTextDx).attr("dy",-5).style("opacity",0),n=a.yv.bind(a),a.ygridLines.select("line").transition().duration(t).attr("x1",s.axis_rotated?n:0).attr("x2",s.axis_rotated?n:a.width).attr("y1",s.axis_rotated?0:n).attr("y2",s.axis_rotated?a.height:n).style("opacity",1),a.ygridLines.select("text").transition().duration(t).attr("x",s.axis_rotated?a.xGridTextX.bind(a):a.yGridTextX.bind(a)).attr("y",n).text(function(t){return t.text}).style("opacity",1),a.ygridLines.exit().transition().duration(t).style("opacity",0).remove()},C.redrawGrid=function(t){var e=this,i=e.config,n=e.xv.bind(e),a=e.xgridLines.select("line"),r=e.xgridLines.select("text");return[(t?a.transition():a).attr("x1",i.axis_rotated?0:n).attr("x2",i.axis_rotated?e.width:n).attr("y1",i.axis_rotated?n:0).attr("y2",i.axis_rotated?n:e.height).style("opacity",1),(t?r.transition():r).attr("x",i.axis_rotated?e.yGridTextX.bind(e):e.xGridTextX.bind(e)).attr("y",n).text(function(t){return t.text}).style("opacity",1)]},C.showXGridFocus=function(t){var e=this,i=e.config,n=t.filter(function(t){return t&&l(t.value)}),a=e.main.selectAll("line."+r.xgridFocus),o=e.xx.bind(e);i.tooltip_show&&(e.hasType("scatter")||e.hasArcType()||(a.style("visibility","visible").data([n[0]]).attr(i.axis_rotated?"y1":"x1",o).attr(i.axis_rotated?"y2":"x2",o),e.smoothLines(a,"grid")))},C.hideXGridFocus=function(){this.main.select("line."+r.xgridFocus).style("visibility","hidden")},C.updateXgridFocus=function(){var t=this,e=t.config;t.main.select("line."+r.xgridFocus).attr("x1",e.axis_rotated?0:-10).attr("x2",e.axis_rotated?t.width:-10).attr("y1",e.axis_rotated?-10:0).attr("y2",e.axis_rotated?-10:t.height)},C.generateGridData=function(t,e){var i,n,a,o,s=this,c=[],d=s.main.select("."+r.axisX).selectAll(".tick").size();if("year"===t)for(n=(i=s.getXDomain())[0].getFullYear(),a=i[1].getFullYear(),o=n;o<=a;o++)c.push(new Date(o+"-01-01 00:00:00"));else(c=e.ticks(10)).length>d&&(c=c.filter(function(t){return(""+t).indexOf(".")<0}));return c},C.getGridFilterToRemove=function(t){return t?function(e){var i=!1;return[].concat(t).forEach(function(t){("value"in t&&e.value===t.value||"class"in t&&e.class===t.class)&&(i=!0)}),i}:function(){return!0}},C.removeGridLines=function(t,e){var i=this,n=i.config,a=i.getGridFilterToRemove(t),o=function(t){return!a(t)},s=e?r.xgridLines:r.ygridLines,c=e?r.xgridLine:r.ygridLine;i.main.select("."+s).selectAll("."+c).filter(a).transition().duration(n.transition_duration).style("opacity",0).remove(),e?n.grid_x_lines=n.grid_x_lines.filter(o):n.grid_y_lines=n.grid_y_lines.filter(o)},C.initEventRect=function(){this.main.select("."+r.chart).append("g").attr("class",r.eventRects).style("fill-opacity",0)},C.redrawEventRect=function(){var t,e,i=this,n=i.config,a=i.isMultipleX(),o=i.main.select("."+r.eventRects).style("cursor",n.zoom_enabled?n.axis_rotated?"ns-resize":"ew-resize":null).classed(r.eventRectsMultiple,a).classed(r.eventRectsSingle,!a);o.selectAll("."+r.eventRect).remove(),i.eventRect=o.selectAll("."+r.eventRect),a?(t=i.eventRect.data([0]),i.generateEventRectsForMultipleXs(t.enter()),i.updateEventRect(t)):(e=i.getMaxDataCountTarget(i.data.targets),o.datum(e?e.values:[]),i.eventRect=o.selectAll("."+r.eventRect),t=i.eventRect.data(function(t){return t}),i.generateEventRectsForSingleX(t.enter()),i.updateEventRect(t),t.exit().remove())},C.updateEventRect=function(t){var e,i,n,a,r,o,s=this,c=s.config;t=t||s.eventRect.data(function(t){return t}),s.isMultipleX()?(e=0,i=0,n=s.width,a=s.height):(!s.isCustomX()&&!s.isTimeSeries()||s.isCategorized()?(r=s.getEventRectWidth(),o=function(t){return s.x(t.x)-r/2}):(s.updateXs(),r=function(t){var e=s.getPrevX(t.index),i=s.getNextX(t.index);return null===e&&null===i?c.axis_rotated?s.height:s.width:(null===e&&(e=s.x.domain()[0]),null===i&&(i=s.x.domain()[1]),Math.max(0,(s.x(i)-s.x(e))/2))},o=function(t){var e=s.getPrevX(t.index),i=s.getNextX(t.index),n=s.data.xs[t.id][t.index];return null===e&&null===i?0:(null===e&&(e=s.x.domain()[0]),(s.x(n)+s.x(e))/2)}),e=c.axis_rotated?0:o,i=c.axis_rotated?o:0,n=c.axis_rotated?s.width:r,a=c.axis_rotated?r:s.height),t.attr("class",s.classEvent.bind(s)).attr("x",e).attr("y",i).attr("width",n).attr("height",a)},C.generateEventRectsForSingleX=function(t){var e=this,i=e.d3,n=e.config;t.append("rect").attr("class",e.classEvent.bind(e)).style("cursor",n.data_selection_enabled&&n.data_selection_grouped?"pointer":null).on("mouseover",function(t){var i=t.index;e.dragging||e.flowing||e.hasArcType()||(n.point_focus_expand_enabled&&e.expandCircles(i,null,!0),e.expandBars(i,null,!0),e.main.selectAll("."+r.shape+"-"+i).each(function(t){n.data_onmouseover.call(e.api,t)}))}).on("mouseout",function(t){var i=t.index;e.config&&(e.hasArcType()||(e.hideXGridFocus(),e.hideTooltip(),e.unexpandCircles(),e.unexpandBars(),e.main.selectAll("."+r.shape+"-"+i).each(function(t){n.data_onmouseout.call(e.api,t)})))}).on("mousemove",function(t){var a,o=t.index,s=e.svg.select("."+r.eventRect+"-"+o);e.dragging||e.flowing||e.hasArcType()||(e.isStepType(t)&&"step-after"===e.config.line_step_type&&i.mouse(this)[0]<e.x(e.getXValue(t.id,o))&&(o-=1),a=e.filterTargetsToShow(e.data.targets).map(function(t){return e.addName(e.getValueOnIndex(t.values,o))}),n.tooltip_grouped&&(e.showTooltip(a,this),e.showXGridFocus(a)),(!n.tooltip_grouped||n.data_selection_enabled&&!n.data_selection_grouped)&&e.main.selectAll("."+r.shape+"-"+o).each(function(){i.select(this).classed(r.EXPANDED,!0),n.data_selection_enabled&&s.style("cursor",n.data_selection_grouped?"pointer":null),n.tooltip_grouped||(e.hideXGridFocus(),e.hideTooltip(),n.data_selection_grouped||(e.unexpandCircles(o),e.unexpandBars(o)))}).filter(function(t){return e.isWithinShape(this,t)}).each(function(t){n.data_selection_enabled&&(n.data_selection_grouped||n.data_selection_isselectable(t))&&s.style("cursor","pointer"),n.tooltip_grouped||(e.showTooltip([t],this),e.showXGridFocus([t]),n.point_focus_expand_enabled&&e.expandCircles(o,t.id,!0),e.expandBars(o,t.id,!0))}))}).on("click",function(t){var a=t.index;!e.hasArcType()&&e.toggleShape&&(e.cancelClick?e.cancelClick=!1:(e.isStepType(t)&&"step-after"===n.line_step_type&&i.mouse(this)[0]<e.x(e.getXValue(t.id,a))&&(a-=1),e.main.selectAll("."+r.shape+"-"+a).each(function(t){(n.data_selection_grouped||e.isWithinShape(this,t))&&(e.toggleShape(this,t,a),e.config.data_onclick.call(e.api,t,this))})))}).call(n.data_selection_draggable&&e.drag?i.behavior.drag().origin(Object).on("drag",function(){e.drag(i.mouse(this))}).on("dragstart",function(){e.dragstart(i.mouse(this))}).on("dragend",function(){e.dragend()}):function(){})},C.generateEventRectsForMultipleXs=function(t){function e(){i.svg.select("."+r.eventRect).style("cursor",null),i.hideXGridFocus(),i.hideTooltip(),i.unexpandCircles(),i.unexpandBars()}var i=this,n=i.d3,a=i.config;t.append("rect").attr("x",0).attr("y",0).attr("width",i.width).attr("height",i.height).attr("class",r.eventRect).on("mouseout",function(){i.config&&(i.hasArcType()||e())}).on("mousemove",function(){var t,o,s,c=i.filterTargetsToShow(i.data.targets);i.dragging||i.hasArcType(c)||(t=n.mouse(this),o=i.findClosestFromTargets(c,t),!i.mouseover||o&&o.id===i.mouseover.id||(a.data_onmouseout.call(i.api,i.mouseover),i.mouseover=void 0),o?(s=(i.isScatterType(o)||!a.tooltip_grouped?[o]:i.filterByX(c,o.x)).map(function(t){return i.addName(t)}),i.showTooltip(s,this),a.point_focus_expand_enabled&&i.expandCircles(o.index,o.id,!0),i.expandBars(o.index,o.id,!0),i.showXGridFocus(s),(i.isBarType(o.id)||i.dist(o,t)<a.point_sensitivity)&&(i.svg.select("."+r.eventRect).style("cursor","pointer"),i.mouseover||(a.data_onmouseover.call(i.api,o),i.mouseover=o))):e())}).on("click",function(){var t,e,o=i.filterTargetsToShow(i.data.targets);i.hasArcType(o)||(t=n.mouse(this),(e=i.findClosestFromTargets(o,t))&&(i.isBarType(e.id)||i.dist(e,t)<a.point_sensitivity)&&i.main.selectAll("."+r.shapes+i.getTargetSelectorSuffix(e.id)).selectAll("."+r.shape+"-"+e.index).each(function(){(a.data_selection_grouped||i.isWithinShape(this,e))&&(i.toggleShape(this,e,e.index),i.config.data_onclick.call(i.api,e,this))}))}).call(a.data_selection_draggable&&i.drag?n.behavior.drag().origin(Object).on("drag",function(){i.drag(n.mouse(this))}).on("dragstart",function(){i.dragstart(n.mouse(this))}).on("dragend",function(){i.dragend()}):function(){})},C.dispatchEvent=function(t,e,i){var n=this,a="."+r.eventRect+(n.isMultipleX()?"":"-"+e),o=n.main.select(a).node(),s=o.getBoundingClientRect(),c=s.left+(i?i[0]:0),d=s.top+(i?i[1]:0),l=document.createEvent("MouseEvents");l.initMouseEvent(t,!0,!0,window,0,c,d,c,d,!1,!1,!1,!1,0,null),o.dispatchEvent(l)},C.initLegend=function(){var t=this;if(t.legendItemTextBox={},t.legendHasRendered=!1,t.legend=t.svg.append("g").attr("transform",t.getTranslate("legend")),!t.config.legend_show)return t.legend.style("visibility","hidden"),void(t.hiddenLegendIds=t.mapToIds(t.data.targets));t.updateLegendWithDefaults()},C.updateLegendWithDefaults=function(){var t=this;t.updateLegend(t.mapToIds(t.data.targets),{withTransform:!1,withTransitionForTransform:!1,withTransition:!1})},C.updateSizeForLegend=function(t,e){var i=this,n=i.config,a={top:i.isLegendTop?i.getCurrentPaddingTop()+n.legend_inset_y+5.5:i.currentHeight-t-i.getCurrentPaddingBottom()-n.legend_inset_y,left:i.isLegendLeft?i.getCurrentPaddingLeft()+n.legend_inset_x+.5:i.currentWidth-e-i.getCurrentPaddingRight()-n.legend_inset_x+.5};i.margin3={top:i.isLegendRight?0:i.isLegendInset?a.top:i.currentHeight-t,right:NaN,bottom:0,left:i.isLegendRight?i.currentWidth-e:i.isLegendInset?a.left:0}},C.transformLegend=function(t){var e=this;(t?e.legend.transition():e.legend).attr("transform",e.getTranslate("legend"))},C.updateLegendStep=function(t){this.legendStep=t},C.updateLegendItemWidth=function(t){this.legendItemWidth=t},C.updateLegendItemHeight=function(t){this.legendItemHeight=t},C.getLegendWidth=function(){var t=this;return t.config.legend_show?t.isLegendRight||t.isLegendInset?t.legendItemWidth*(t.legendStep+1):t.currentWidth:0},C.getLegendHeight=function(){var t=this,e=0;return t.config.legend_show&&(e=t.isLegendRight?t.currentHeight:Math.max(20,t.legendItemHeight)*(t.legendStep+1)),e},C.opacityForLegend=function(t){return t.classed(r.legendItemHidden)?null:1},C.opacityForUnfocusedLegend=function(t){return t.classed(r.legendItemHidden)?null:.3},C.toggleFocusLegend=function(t,e){var i=this;t=i.mapToTargetIds(t),i.legend.selectAll("."+r.legendItem).filter(function(e){return t.indexOf(e)>=0}).classed(r.legendItemFocused,e).transition().duration(100).style("opacity",function(){return(e?i.opacityForLegend:i.opacityForUnfocusedLegend).call(i,i.d3.select(this))})},C.revertLegend=function(){var t=this,e=t.d3;t.legend.selectAll("."+r.legendItem).classed(r.legendItemFocused,!1).transition().duration(100).style("opacity",function(){return t.opacityForLegend(e.select(this))})},C.showLegend=function(t){var e=this,i=e.config;i.legend_show||(i.legend_show=!0,e.legend.style("visibility","visible"),e.legendHasRendered||e.updateLegendWithDefaults()),e.removeHiddenLegendIds(t),e.legend.selectAll(e.selectorLegends(t)).style("visibility","visible").transition().style("opacity",function(){return e.opacityForLegend(e.d3.select(this))})},C.hideLegend=function(t){var e=this,i=e.config;i.legend_show&&y(t)&&(i.legend_show=!1,e.legend.style("visibility","hidden")),e.addHiddenLegendIds(t),e.legend.selectAll(e.selectorLegends(t)).style("opacity",0).style("visibility","hidden")},C.clearLegendItemTextBoxCache=function(){this.legendItemTextBox={}},C.updateLegend=function(t,e,i){function n(t,e){return b.legendItemTextBox[e]||(b.legendItemTextBox[e]=b.getTextRect(t.textContent,r.legendItem,t)),b.legendItemTextBox[e]}function a(e,i,a){function r(t,e){e||(o=(f-E-g)/2)<V&&(o=(f-g)/2,E=0,F++),D[t]=F,k[F]=b.isLegendInset?10:o,O[t]=E,E+=g}var o,s,c=0===a,d=a===t.length-1,l=n(e,i),u=l.width+G+(!d||b.isLegendRight||b.isLegendInset?P:0)+T.legend_padding,h=l.height+A,g=b.isLegendRight||b.isLegendInset?h:u,f=b.isLegendRight||b.isLegendInset?b.getLegendHeight():b.getLegendWidth();c&&(E=0,F=0,C=0,L=0),!T.legend_show||b.isLegendToShow(i)?(I[i]=u,R[i]=h,(!C||u>=C)&&(C=u),(!L||h>=L)&&(L=h),s=b.isLegendRight||b.isLegendInset?L:C,T.legend_equally?(Object.keys(I).forEach(function(t){I[t]=C}),Object.keys(R).forEach(function(t){R[t]=L}),(o=(f-s*t.length)/2)<V?(E=0,F=0,t.forEach(function(t){r(t)})):r(i,!0)):r(i)):I[i]=R[i]=D[i]=O[i]=0}var o,s,c,d,l,u,h,g,f,p,_,x,m,y,S,v,b=this,T=b.config,A=4,P=10,C=0,L=0,V=10,G=T.legend_item_tile_width+5,E=0,O={},I={},R={},k=[0],D={},F=0;t=t.filter(function(t){return!(void 0!==T.data_names[t])||null!==T.data_names[t]}),_=w(e=e||{},"withTransition",!0),x=w(e,"withTransitionForTransform",!0),b.isLegendInset&&(F=T.legend_inset_step?T.legend_inset_step:t.length,b.updateLegendStep(F)),b.isLegendRight?(o=function(t){return C*D[t]},d=function(t){return k[D[t]]+O[t]}):b.isLegendInset?(o=function(t){return C*D[t]+10},d=function(t){return k[D[t]]+O[t]}):(o=function(t){return k[D[t]]+O[t]},d=function(t){return L*D[t]}),s=function(t,e){return o(t,e)+4+T.legend_item_tile_width},l=function(t,e){return d(t,e)+9},c=function(t,e){return o(t,e)},u=function(t,e){return d(t,e)-5},h=function(t,e){return o(t,e)-2},g=function(t,e){return o(t,e)-2+T.legend_item_tile_width},f=function(t,e){return d(t,e)+4},(p=b.legend.selectAll("."+r.legendItem).data(t).enter().append("g").attr("class",function(t){return b.generateClass(r.legendItem,t)}).style("visibility",function(t){return b.isLegendToShow(t)?"visible":"hidden"}).style("cursor","pointer").on("click",function(t){T.legend_item_onclick?T.legend_item_onclick.call(b,t):b.d3.event.altKey?(b.api.hide(),b.api.show(t)):(b.api.toggle(t),b.isTargetToShow(t)?b.api.focus(t):b.api.revert())}).on("mouseover",function(t){T.legend_item_onmouseover?T.legend_item_onmouseover.call(b,t):(b.d3.select(this).classed(r.legendItemFocused,!0),!b.transiting&&b.isTargetToShow(t)&&b.api.focus(t))}).on("mouseout",function(t){T.legend_item_onmouseout?T.legend_item_onmouseout.call(b,t):(b.d3.select(this).classed(r.legendItemFocused,!1),b.api.revert())})).append("text").text(function(t){return void 0!==T.data_names[t]?T.data_names[t]:t}).each(function(t,e){a(this,t,e)}).style("pointer-events","none").attr("x",b.isLegendRight||b.isLegendInset?s:-200).attr("y",b.isLegendRight||b.isLegendInset?-200:l),p.append("rect").attr("class",r.legendItemEvent).style("fill-opacity",0).attr("x",b.isLegendRight||b.isLegendInset?c:-200).attr("y",b.isLegendRight||b.isLegendInset?-200:u),p.append("line").attr("class",r.legendItemTile).style("stroke",b.color).style("pointer-events","none").attr("x1",b.isLegendRight||b.isLegendInset?h:-200).attr("y1",b.isLegendRight||b.isLegendInset?-200:f).attr("x2",b.isLegendRight||b.isLegendInset?g:-200).attr("y2",b.isLegendRight||b.isLegendInset?-200:f).attr("stroke-width",T.legend_item_tile_height),v=b.legend.select("."+r.legendBackground+" rect"),b.isLegendInset&&C>0&&0===v.size()&&(v=b.legend.insert("g","."+r.legendItem).attr("class",r.legendBackground).append("rect")),m=b.legend.selectAll("text").data(t).text(function(t){return void 0!==T.data_names[t]?T.data_names[t]:t}).each(function(t,e){a(this,t,e)}),(_?m.transition():m).attr("x",s).attr("y",l),y=b.legend.selectAll("rect."+r.legendItemEvent).data(t),(_?y.transition():y).attr("width",function(t){return I[t]}).attr("height",function(t){return R[t]}).attr("x",c).attr("y",u),S=b.legend.selectAll("line."+r.legendItemTile).data(t),(_?S.transition():S).style("stroke",b.color).attr("x1",h).attr("y1",f).attr("x2",g).attr("y2",f),v&&(_?v.transition():v).attr("height",b.getLegendHeight()-12).attr("width",C*(F+1)+10),b.legend.selectAll("."+r.legendItem).classed(r.legendItemHidden,function(t){return!b.isTargetToShow(t)}),b.updateLegendItemWidth(C),b.updateLegendItemHeight(L),b.updateLegendStep(F),b.updateSizes(),b.updateScales(),b.updateSvgSize(),b.transformAll(x,i),b.legendHasRendered=!0},C.initRegion=function(){var t=this;t.region=t.main.append("g").attr("clip-path",t.clipPath).attr("class",r.regions)},C.updateRegion=function(t){var e=this,i=e.config;e.region.style("visibility",e.hasArcType()?"hidden":"visible"),e.mainRegion=e.main.select("."+r.regions).selectAll("."+r.region).data(i.regions),e.mainRegion.enter().append("g").append("rect").style("fill-opacity",0),e.mainRegion.attr("class",e.classRegion.bind(e)),e.mainRegion.exit().transition().duration(t).style("opacity",0).remove()},C.redrawRegion=function(t){var e=this,i=e.mainRegion.selectAll("rect").each(function(){var t=e.d3.select(this.parentNode).datum();e.d3.select(this).datum(t)}),n=e.regionX.bind(e),a=e.regionY.bind(e),r=e.regionWidth.bind(e),o=e.regionHeight.bind(e);return[(t?i.transition():i).attr("x",n).attr("y",a).attr("width",r).attr("height",o).style("fill-opacity",function(t){return l(t.opacity)?t.opacity:.1})]},C.regionX=function(t){var e=this,i=e.config,n="y"===t.axis?e.y:e.y2;return"y"===t.axis||"y2"===t.axis?i.axis_rotated&&"start"in t?n(t.start):0:i.axis_rotated?0:"start"in t?e.x(e.isTimeSeries()?e.parseDate(t.start):t.start):0},C.regionY=function(t){var e=this,i=e.config,n="y"===t.axis?e.y:e.y2;return"y"===t.axis||"y2"===t.axis?i.axis_rotated?0:"end"in t?n(t.end):0:i.axis_rotated&&"start"in t?e.x(e.isTimeSeries()?e.parseDate(t.start):t.start):0},C.regionWidth=function(t){var e,i=this,n=i.config,a=i.regionX(t),r="y"===t.axis?i.y:i.y2;return e="y"===t.axis||"y2"===t.axis?n.axis_rotated&&"end"in t?r(t.end):i.width:n.axis_rotated?i.width:"end"in t?i.x(i.isTimeSeries()?i.parseDate(t.end):t.end):i.width,e<a?0:e-a},C.regionHeight=function(t){var e,i=this,n=i.config,a=this.regionY(t),r="y"===t.axis?i.y:i.y2;return e="y"===t.axis||"y2"===t.axis?n.axis_rotated?i.height:"start"in t?r(t.start):i.height:n.axis_rotated&&"end"in t?i.x(i.isTimeSeries()?i.parseDate(t.end):t.end):i.height,e<a?0:e-a},C.isRegionOnX=function(t){return!t.axis||"x"===t.axis},C.getScale=function(t,e,i){return(i?this.d3.time.scale():this.d3.scale.linear()).range([t,e])},C.getX=function(t,e,i,n){var a,r=this,o=r.getScale(t,e,r.isTimeSeries()),s=i?o.domain(i):o;r.isCategorized()?(n=n||function(){return 0},o=function(t,e){var i=s(t)+n(t);return e?i:Math.ceil(i)}):o=function(t,e){var i=s(t);return e?i:Math.ceil(i)};for(a in s)o[a]=s[a];return o.orgDomain=function(){return s.domain()},r.isCategorized()&&(o.domain=function(t){return arguments.length?(s.domain(t),o):(t=this.orgDomain(),[t[0],t[1]+1])}),o},C.getY=function(t,e,i){var n=this.getScale(t,e,this.isTimeSeriesY());return i&&n.domain(i),n},C.getYScale=function(t){return"y2"===this.axis.getId(t)?this.y2:this.y},C.getSubYScale=function(t){return"y2"===this.axis.getId(t)?this.subY2:this.subY},C.updateScales=function(){var t=this,e=t.config,i=!t.x;t.xMin=e.axis_rotated?1:0,t.xMax=e.axis_rotated?t.height:t.width,t.yMin=e.axis_rotated?0:t.height,t.yMax=e.axis_rotated?t.width:1,t.subXMin=t.xMin,t.subXMax=t.xMax,t.subYMin=e.axis_rotated?0:t.height2,t.subYMax=e.axis_rotated?t.width2:1,t.x=t.getX(t.xMin,t.xMax,i?void 0:t.x.orgDomain(),function(){return t.xAxis.tickOffset()}),t.y=t.getY(t.yMin,t.yMax,i?e.axis_y_default:t.y.domain()),t.y2=t.getY(t.yMin,t.yMax,i?e.axis_y2_default:t.y2.domain()),t.subX=t.getX(t.xMin,t.xMax,t.orgXDomain,function(e){return e%1?0:t.subXAxis.tickOffset()}),t.subY=t.getY(t.subYMin,t.subYMax,i?e.axis_y_default:t.subY.domain()),t.subY2=t.getY(t.subYMin,t.subYMax,i?e.axis_y2_default:t.subY2.domain()),t.xAxisTickFormat=t.axis.getXAxisTickFormat(),t.xAxisTickValues=t.axis.getXAxisTickValues(),t.yAxisTickValues=t.axis.getYAxisTickValues(),t.y2AxisTickValues=t.axis.getY2AxisTickValues(),t.xAxis=t.axis.getXAxis(t.x,t.xOrient,t.xAxisTickFormat,t.xAxisTickValues,e.axis_x_tick_outer),t.subXAxis=t.axis.getXAxis(t.subX,t.subXOrient,t.xAxisTickFormat,t.xAxisTickValues,e.axis_x_tick_outer),t.yAxis=t.axis.getYAxis(t.y,t.yOrient,e.axis_y_tick_format,t.yAxisTickValues,e.axis_y_tick_outer),t.y2Axis=t.axis.getYAxis(t.y2,t.y2Orient,e.axis_y2_tick_format,t.y2AxisTickValues,e.axis_y2_tick_outer),i||(t.brush&&t.brush.scale(t.subX),e.zoom_enabled&&t.zoom.scale(t.x)),t.updateArc&&t.updateArc()},C.selectPoint=function(t,e,i){var n=this,a=n.config,o=(a.axis_rotated?n.circleY:n.circleX).bind(n),s=(a.axis_rotated?n.circleX:n.circleY).bind(n),c=n.pointSelectR.bind(n);a.data_onselected.call(n.api,e,t.node()),n.main.select("."+r.selectedCircles+n.getTargetSelectorSuffix(e.id)).selectAll("."+r.selectedCircle+"-"+i).data([e]).enter().append("circle").attr("class",function(){return n.generateClass(r.selectedCircle,i)}).attr("cx",o).attr("cy",s).attr("stroke",function(){return n.color(e)}).attr("r",function(t){return 1.4*n.pointSelectR(t)}).transition().duration(100).attr("r",c)},C.unselectPoint=function(t,e,i){var n=this;n.config.data_onunselected.call(n.api,e,t.node()),n.main.select("."+r.selectedCircles+n.getTargetSelectorSuffix(e.id)).selectAll("."+r.selectedCircle+"-"+i).transition().duration(100).attr("r",0).remove()},C.togglePoint=function(t,e,i,n){t?this.selectPoint(e,i,n):this.unselectPoint(e,i,n)},C.selectPath=function(t,e){var i=this;i.config.data_onselected.call(i,e,t.node()),i.config.interaction_brighten&&t.transition().duration(100).style("fill",function(){return i.d3.rgb(i.color(e)).brighter(.75)})},C.unselectPath=function(t,e){var i=this;i.config.data_onunselected.call(i,e,t.node()),i.config.interaction_brighten&&t.transition().duration(100).style("fill",function(){return i.color(e)})},C.togglePath=function(t,e,i,n){t?this.selectPath(e,i,n):this.unselectPath(e,i,n)},C.getToggle=function(t,e){var i,n=this;return"circle"===t.nodeName?i=n.isStepType(e)?function(){}:n.togglePoint:"path"===t.nodeName&&(i=n.togglePath),i},C.toggleShape=function(t,e,i){var n=this,a=n.d3,o=n.config,s=a.select(t),c=s.classed(r.SELECTED),d=n.getToggle(t,e).bind(n);o.data_selection_enabled&&o.data_selection_isselectable(e)&&(o.data_selection_multiple||n.main.selectAll("."+r.shapes+(o.data_selection_grouped?n.getTargetSelectorSuffix(e.id):"")).selectAll("."+r.shape).each(function(t,e){var i=a.select(this);i.classed(r.SELECTED)&&d(!1,i.classed(r.SELECTED,!1),t,e)}),s.classed(r.SELECTED,!c),d(!c,s,e,i))},C.initBar=function(){this.main.select("."+r.chart).append("g").attr("class",r.chartBars)},C.updateTargetsForBar=function(t){var e=this,i=e.config,n=e.classChartBar.bind(e),a=e.classBars.bind(e),o=e.classFocus.bind(e);e.main.select("."+r.chartBars).selectAll("."+r.chartBar).data(t).attr("class",function(t){return n(t)+o(t)}).enter().append("g").attr("class",n).style("pointer-events","none").append("g").attr("class",a).style("cursor",function(t){return i.data_selection_isselectable(t)?"pointer":null})},C.updateBar=function(t){var e=this,i=e.barData.bind(e),n=e.classBar.bind(e),a=e.initialOpacity.bind(e),o=function(t){return e.color(t.id)};e.mainBar=e.main.selectAll("."+r.bars).selectAll("."+r.bar).data(i),e.mainBar.enter().append("path").attr("class",n).style("stroke",o).style("fill",o),e.mainBar.style("opacity",a),e.mainBar.exit().transition().duration(t).remove()},C.redrawBar=function(t,e){return[(e?this.mainBar.transition(Math.random().toString()):this.mainBar).attr("d",t).style("stroke",this.color).style("fill",this.color).style("opacity",1)]},C.getBarW=function(t,e){var i=this.config,n="number"==typeof i.bar_width?i.bar_width:e?t.tickInterval()*i.bar_width_ratio/e:0;return i.bar_width_max&&n>i.bar_width_max?i.bar_width_max:n},C.getBars=function(t,e){var i=this;return(e?i.main.selectAll("."+r.bars+i.getTargetSelectorSuffix(e)):i.main).selectAll("."+r.bar+(l(t)?"-"+t:""))},C.expandBars=function(t,e,i){var n=this;i&&n.unexpandBars(),n.getBars(t,e).classed(r.EXPANDED,!0)},C.unexpandBars=function(t){this.getBars(t).classed(r.EXPANDED,!1)},C.generateDrawBar=function(t,e){var i=this,n=i.config,a=i.generateGetBarPoints(t,e);return function(t,e){var i=a(t,e),r=n.axis_rotated?1:0,o=n.axis_rotated?0:1;return"M "+i[0][r]+","+i[0][o]+" L"+i[1][r]+","+i[1][o]+" L"+i[2][r]+","+i[2][o]+" L"+i[3][r]+","+i[3][o]+" z"}},C.generateGetBarPoints=function(t,e){var i=this,n=e?i.subXAxis:i.xAxis,a=t.__max__+1,r=i.getBarW(n,a),o=i.getShapeX(r,a,t,!!e),s=i.getShapeY(!!e),c=i.getShapeOffset(i.isBarType,t,!!e),d=r*(i.config.bar_space/2),l=e?i.getSubYScale:i.getYScale;return function(t,e){var n=l.call(i,t.id)(0),a=c(t,e)||n,u=o(t),h=s(t);return i.config.axis_rotated&&(0<t.value&&h<n||t.value<0&&n<h)&&(h=n),[[u+d,a],[u+d,h-(n-a)],[u+r-d,h-(n-a)],[u+r-d,a]]}},C.isWithinBar=function(t){var e=this.d3.mouse(t),i=t.getBoundingClientRect(),n=t.pathSegList.getItem(0),a=t.pathSegList.getItem(1),r=Math.min(n.x,a.x),o=Math.min(n.y,a.y),s=r+i.width+2,c=o+i.height+2,d=o-2;return r-2<e[0]&&e[0]<s&&d<e[1]&&e[1]<c},C.getShapeIndices=function(t){var e,i,n=this,a=n.config,r={},o=0;return n.filterTargetsToShow(n.data.targets.filter(t,n)).forEach(function(t){for(e=0;e<a.data_groups.length;e++)if(!(a.data_groups[e].indexOf(t.id)<0))for(i=0;i<a.data_groups[e].length;i++)if(a.data_groups[e][i]in r){r[t.id]=r[a.data_groups[e][i]];break}void 0===r[t.id]&&(r[t.id]=o++)}),r.__max__=o-1,r},C.getShapeX=function(t,e,i,n){var a=this,r=n?a.subX:a.x;return function(n){var a=n.id in i?i[n.id]:0;return n.x||0===n.x?r(n.x)-t*(e/2-a):0}},C.getShapeY=function(t){var e=this;return function(i){return(t?e.getSubYScale(i.id):e.getYScale(i.id))(i.value)}},C.getShapeOffset=function(t,e,i){var n=this,a=n.orderTargets(n.filterTargetsToShow(n.data.targets.filter(t,n))),r=a.map(function(t){return t.id});return function(t,o){var s=i?n.getSubYScale(t.id):n.getYScale(t.id),c=s(0),d=c;return a.forEach(function(i){var a=n.isStepType(t)?n.convertValuesToStep(i.values):i.values;i.id!==t.id&&e[i.id]===e[t.id]&&r.indexOf(i.id)<r.indexOf(t.id)&&(void 0!==a[o]&&+a[o].x==+t.x||(o=-1,a.forEach(function(e,i){e.x===t.x&&(o=i)})),o in a&&a[o].value*t.value>=0&&(d+=s(a[o].value)-c))}),d}},C.isWithinShape=function(t,e){var i,n=this,a=n.d3.select(t);return n.isTargetToShow(e.id)?"circle"===t.nodeName?i=n.isStepType(e)?n.isWithinStep(t,n.getYScale(e.id)(e.value)):n.isWithinCircle(t,1.5*n.pointSelectR(e)):"path"===t.nodeName&&(i=!a.classed(r.bar)||n.isWithinBar(t)):i=!1,i},C.getInterpolate=function(t){var e=this,i=e.isInterpolationType(e.config.spline_interpolation_type)?e.config.spline_interpolation_type:"cardinal";return e.isSplineType(t)?i:e.isStepType(t)?e.config.line_step_type:"linear"},C.initLine=function(){this.main.select("."+r.chart).append("g").attr("class",r.chartLines)},C.updateTargetsForLine=function(t){var e,i=this,n=i.config,a=i.classChartLine.bind(i),o=i.classLines.bind(i),s=i.classAreas.bind(i),c=i.classCircles.bind(i),d=i.classFocus.bind(i);(e=i.main.select("."+r.chartLines).selectAll("."+r.chartLine).data(t).attr("class",function(t){return a(t)+d(t)}).enter().append("g").attr("class",a).style("opacity",0).style("pointer-events","none")).append("g").attr("class",o),e.append("g").attr("class",s),e.append("g").attr("class",function(t){return i.generateClass(r.selectedCircles,t.id)}),e.append("g").attr("class",c).style("cursor",function(t){return n.data_selection_isselectable(t)?"pointer":null}),t.forEach(function(t){i.main.selectAll("."+r.selectedCircles+i.getTargetSelectorSuffix(t.id)).selectAll("."+r.selectedCircle).each(function(e){e.value=t.values[e.index].value})})},C.updateLine=function(t){var e=this;e.mainLine=e.main.selectAll("."+r.lines).selectAll("."+r.line).data(e.lineData.bind(e)),e.mainLine.enter().append("path").attr("class",e.classLine.bind(e)).style("stroke",e.color),e.mainLine.style("opacity",e.initialOpacity.bind(e)).style("shape-rendering",function(t){return e.isStepType(t)?"crispEdges":""}).attr("transform",null),e.mainLine.exit().transition().duration(t).style("opacity",0).remove()},C.redrawLine=function(t,e){return[(e?this.mainLine.transition(Math.random().toString()):this.mainLine).attr("d",t).style("stroke",this.color).style("opacity",1)]},C.generateDrawLine=function(t,e){var i=this,n=i.config,a=i.d3.svg.line(),r=i.generateGetLinePoints(t,e),o=e?i.getSubYScale:i.getYScale,s=function(t){return(e?i.subxx:i.xx).call(i,t)},c=function(t,e){return n.data_groups.length>0?r(t,e)[0][1]:o.call(i,t.id)(t.value)};return a=n.axis_rotated?a.x(c).y(s):a.x(s).y(c),n.line_connectNull||(a=a.defined(function(t){return null!=t.value})),function(t){var r,s=n.line_connectNull?i.filterRemoveNull(t.values):t.values,c=e?i.x:i.subX,d=o.call(i,t.id),l=0,u=0;return i.isLineType(t)?n.data_regions[t.id]?r=i.lineWithRegions(s,c,d,n.data_regions[t.id]):(i.isStepType(t)&&(s=i.convertValuesToStep(s)),r=a.interpolate(i.getInterpolate(t))(s)):(s[0]&&(l=c(s[0].x),u=d(s[0].value)),r=n.axis_rotated?"M "+u+" "+l:"M "+l+" "+u),r||"M 0 0"}},C.generateGetLinePoints=function(t,e){var i=this,n=i.config,a=t.__max__+1,r=i.getShapeX(0,a,t,!!e),o=i.getShapeY(!!e),s=i.getShapeOffset(i.isLineType,t,!!e),c=e?i.getSubYScale:i.getYScale;return function(t,e){var a=c.call(i,t.id)(0),d=s(t,e)||a,l=r(t),u=o(t);return n.axis_rotated&&(0<t.value&&u<a||t.value<0&&a<u)&&(u=a),[[l,u-(a-d)],[l,u-(a-d)],[l,u-(a-d)],[l,u-(a-d)]]}},C.lineWithRegions=function(t,e,i,n){function a(t){return"M"+t[0][0]+" "+t[0][1]+" "+t[1][0]+" "+t[1][1]}var r,o,s,c,d,l,u,h,g,f,p,_=this,x=_.config,m="M",y=_.isCategorized()?.5:0,S=[];if(void 0!==n)for(r=0;r<n.length;r++)S[r]={},void 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i;for(i=0;i<e.length;i++)if(e[i].start<t&&t<=e[i].end)return!0;return!1}(t[r].x,S))for(c=_.getScale(t[r-1].x+y,t[r].x+y,_.isTimeSeries()),d=_.getScale(t[r-1].value,t[r].value),l=e(t[r].x)-e(t[r-1].x),u=i(t[r].value)-i(t[r-1].value),g=2*(h=2/Math.sqrt(Math.pow(l,2)+Math.pow(u,2))),o=h;o<=1;o+=g)m+=s(t[r-1],t[r],o,h);else m+=" "+f(t[r])+" "+p(t[r]);t[r].x}return m},C.updateArea=function(t){var e=this,i=e.d3;e.mainArea=e.main.selectAll("."+r.areas).selectAll("."+r.area).data(e.lineData.bind(e)),e.mainArea.enter().append("path").attr("class",e.classArea.bind(e)).style("fill",e.color).style("opacity",function(){return e.orgAreaOpacity=+i.select(this).style("opacity"),0}),e.mainArea.style("opacity",e.orgAreaOpacity),e.mainArea.exit().transition().duration(t).style("opacity",0).remove()},C.redrawArea=function(t,e){return[(e?this.mainArea.transition(Math.random().toString()):this.mainArea).attr("d",t).style("fill",this.color).style("opacity",this.orgAreaOpacity)]},C.generateDrawArea=function(t,e){var i=this,n=i.config,a=i.d3.svg.area(),r=i.generateGetAreaPoints(t,e),o=e?i.getSubYScale:i.getYScale,s=function(t){return(e?i.subxx:i.xx).call(i,t)},c=function(t,e){return n.data_groups.length>0?r(t,e)[0][1]:o.call(i,t.id)(i.getAreaBaseValue(t.id))},d=function(t,e){return n.data_groups.length>0?r(t,e)[1][1]:o.call(i,t.id)(t.value)};return a=n.axis_rotated?a.x0(c).x1(d).y(s):a.x(s).y0(n.area_above?0:c).y1(d),n.line_connectNull||(a=a.defined(function(t){return null!==t.value})),function(t){var e,r=n.line_connectNull?i.filterRemoveNull(t.values):t.values,o=0,s=0;return i.isAreaType(t)?(i.isStepType(t)&&(r=i.convertValuesToStep(r)),e=a.interpolate(i.getInterpolate(t))(r)):(r[0]&&(o=i.x(r[0].x),s=i.getYScale(t.id)(r[0].value)),e=n.axis_rotated?"M "+s+" "+o:"M "+o+" "+s),e||"M 0 0"}},C.getAreaBaseValue=function(){return 0},C.generateGetAreaPoints=function(t,e){var i=this,n=i.config,a=t.__max__+1,r=i.getShapeX(0,a,t,!!e),o=i.getShapeY(!!e),s=i.getShapeOffset(i.isAreaType,t,!!e),c=e?i.getSubYScale:i.getYScale;return function(t,e){var a=c.call(i,t.id)(0),d=s(t,e)||a,l=r(t),u=o(t);return n.axis_rotated&&(0<t.value&&u<a||t.value<0&&a<u)&&(u=a),[[l,d],[l,u-(a-d)],[l,u-(a-d)],[l,d]]}},C.updateCircle=function(){var t=this;t.mainCircle=t.main.selectAll("."+r.circles).selectAll("."+r.circle).data(t.lineOrScatterData.bind(t)),t.mainCircle.enter().append("circle").attr("class",t.classCircle.bind(t)).attr("r",t.pointR.bind(t)).style("fill",t.color),t.mainCircle.style("opacity",t.initialOpacityForCircle.bind(t)),t.mainCircle.exit().remove()},C.redrawCircle=function(t,e,i){var n=this.main.selectAll("."+r.selectedCircle);return[(i?this.mainCircle.transition(Math.random().toString()):this.mainCircle).style("opacity",this.opacityForCircle.bind(this)).style("fill",this.color).attr("cx",t).attr("cy",e),(i?n.transition(Math.random().toString()):n).attr("cx",t).attr("cy",e)]},C.circleX=function(t){return t.x||0===t.x?this.x(t.x):null},C.updateCircleY=function(){var t,e,i=this;i.config.data_groups.length>0?(t=i.getShapeIndices(i.isLineType),e=i.generateGetLinePoints(t),i.circleY=function(t,i){return e(t,i)[0][1]}):i.circleY=function(t){return i.getYScale(t.id)(t.value)}},C.getCircles=function(t,e){var i=this;return(e?i.main.selectAll("."+r.circles+i.getTargetSelectorSuffix(e)):i.main).selectAll("."+r.circle+(l(t)?"-"+t:""))},C.expandCircles=function(t,e,i){var n=this,a=n.pointExpandedR.bind(n);i&&n.unexpandCircles(),n.getCircles(t,e).classed(r.EXPANDED,!0).attr("r",a)},C.unexpandCircles=function(t){var e=this,i=e.pointR.bind(e);e.getCircles(t).filter(function(){return e.d3.select(this).classed(r.EXPANDED)}).classed(r.EXPANDED,!1).attr("r",i)},C.pointR=function(t){var e=this,i=e.config;return e.isStepType(t)?0:u(i.point_r)?i.point_r(t):i.point_r},C.pointExpandedR=function(t){var e=this,i=e.config;return i.point_focus_expand_enabled?u(i.point_focus_expand_r)?i.point_focus_expand_r(t):i.point_focus_expand_r?i.point_focus_expand_r:1.75*e.pointR(t):e.pointR(t)},C.pointSelectR=function(t){var e=this,i=e.config;return u(i.point_select_r)?i.point_select_r(t):i.point_select_r?i.point_select_r:4*e.pointR(t)},C.isWithinCircle=function(t,e){var i=this.d3,n=i.mouse(t),a=i.select(t),r=+a.attr("cx"),o=+a.attr("cy");return Math.sqrt(Math.pow(r-n[0],2)+Math.pow(o-n[1],2))<e},C.isWithinStep=function(t,e){return Math.abs(e-this.d3.mouse(t)[1])<30},C.getCurrentWidth=function(){var t=this,e=t.config;return e.size_width?e.size_width:t.getParentWidth()},C.getCurrentHeight=function(){var t=this,e=t.config,i=e.size_height?e.size_height:t.getParentHeight();return i>0?i:320/(t.hasType("gauge")&&!e.gauge_fullCircle?2:1)},C.getCurrentPaddingTop=function(){var t=this,e=t.config,i=l(e.padding_top)?e.padding_top:0;return t.title&&t.title.node()&&(i+=t.getTitlePadding()),i},C.getCurrentPaddingBottom=function(){var t=this.config;return l(t.padding_bottom)?t.padding_bottom:0},C.getCurrentPaddingLeft=function(t){var e=this,i=e.config;return l(i.padding_left)?i.padding_left:i.axis_rotated?i.axis_x_show?Math.max(_(e.getAxisWidthByAxisId("x",t)),40):1:!i.axis_y_show||i.axis_y_inner?e.axis.getYAxisLabelPosition().isOuter?30:1:_(e.getAxisWidthByAxisId("y",t))},C.getCurrentPaddingRight=function(){var t=this,e=t.config,i=t.isLegendRight?t.getLegendWidth()+20:0;return l(e.padding_right)?e.padding_right+1:e.axis_rotated?10+i:!e.axis_y2_show||e.axis_y2_inner?2+i+(t.axis.getY2AxisLabelPosition().isOuter?20:0):_(t.getAxisWidthByAxisId("y2"))+i},C.getParentRectValue=function(t){for(var e,i=this.selectChart.node();i&&"BODY"!==i.tagName;){try{e=i.getBoundingClientRect()[t]}catch(n){"width"===t&&(e=i.offsetWidth)}if(e)break;i=i.parentNode}return e},C.getParentWidth=function(){return this.getParentRectValue("width")},C.getParentHeight=function(){var t=this.selectChart.style("height");return t.indexOf("px")>0?+t.replace("px",""):0},C.getSvgLeft=function(t){var e=this,i=e.config,n=i.axis_rotated||!i.axis_rotated&&!i.axis_y_inner,a=i.axis_rotated?r.axisX:r.axisY,o=e.main.select("."+a).node(),s=o&&n?o.getBoundingClientRect():{right:0},c=e.selectChart.node().getBoundingClientRect(),d=e.hasArcType(),l=s.right-c.left-(d?0:e.getCurrentPaddingLeft(t));return l>0?l:0},C.getAxisWidthByAxisId=function(t,e){var i=this,n=i.axis.getLabelPositionById(t);return i.axis.getMaxTickWidth(t,e)+(n.isInner?20:40)},C.getHorizontalAxisHeight=function(t){var e=this,i=e.config,n=30;return"x"!==t||i.axis_x_show?"x"===t&&i.axis_x_height?i.axis_x_height:"y"!==t||i.axis_y_show?"y2"!==t||i.axis_y2_show?("x"===t&&!i.axis_rotated&&i.axis_x_tick_rotate&&(n=30+e.axis.getMaxTickWidth(t)*Math.cos(Math.PI*(90-i.axis_x_tick_rotate)/180)),"y"===t&&i.axis_rotated&&i.axis_y_tick_rotate&&(n=30+e.axis.getMaxTickWidth(t)*Math.cos(Math.PI*(90-i.axis_y_tick_rotate)/180)),n+(e.axis.getLabelPositionById(t).isInner?0:10)+("y2"===t?-10:0)):e.rotated_padding_top:!i.legend_show||e.isLegendRight||e.isLegendInset?1:10:8},C.getEventRectWidth=function(){return Math.max(0,this.xAxis.tickInterval())},C.initBrush=function(){var t=this,e=t.d3;t.brush=e.svg.brush().on("brush",function(){t.redrawForBrush()}),t.brush.update=function(){return t.context&&t.context.select("."+r.brush).call(this),this},t.brush.scale=function(e){return t.config.axis_rotated?this.y(e):this.x(e)}},C.initSubchart=function(){var t=this,e=t.config,i=t.context=t.svg.append("g").attr("transform",t.getTranslate("context")),n=e.subchart_show?"visible":"hidden";i.style("visibility",n),i.append("g").attr("clip-path",t.clipPathForSubchart).attr("class",r.chart),i.select("."+r.chart).append("g").attr("class",r.chartBars),i.select("."+r.chart).append("g").attr("class",r.chartLines),i.append("g").attr("clip-path",t.clipPath).attr("class",r.brush).call(t.brush),t.axes.subx=i.append("g").attr("class",r.axisX).attr("transform",t.getTranslate("subx")).attr("clip-path",e.axis_rotated?"":t.clipPathForXAxis).style("visibility",e.subchart_axis_x_show?n:"hidden")},C.updateTargetsForSubchart=function(t){var e,i=this,n=i.context,a=i.config,o=i.classChartBar.bind(i),s=i.classBars.bind(i),c=i.classChartLine.bind(i),d=i.classLines.bind(i),l=i.classAreas.bind(i);a.subchart_show&&(n.select("."+r.chartBars).selectAll("."+r.chartBar).data(t).attr("class",o).enter().append("g").style("opacity",0).attr("class",o).append("g").attr("class",s),(e=n.select("."+r.chartLines).selectAll("."+r.chartLine).data(t).attr("class",c).enter().append("g").style("opacity",0).attr("class",c)).append("g").attr("class",d),e.append("g").attr("class",l),n.selectAll("."+r.brush+" rect").attr(a.axis_rotated?"width":"height",a.axis_rotated?i.width2:i.height2))},C.updateBarForSubchart=function(t){var e=this;e.contextBar=e.context.selectAll("."+r.bars).selectAll("."+r.bar).data(e.barData.bind(e)),e.contextBar.enter().append("path").attr("class",e.classBar.bind(e)).style("stroke","none").style("fill",e.color),e.contextBar.style("opacity",e.initialOpacity.bind(e)),e.contextBar.exit().transition().duration(t).style("opacity",0).remove()},C.redrawBarForSubchart=function(t,e,i){(e?this.contextBar.transition(Math.random().toString()).duration(i):this.contextBar).attr("d",t).style("opacity",1)},C.updateLineForSubchart=function(t){var e=this;e.contextLine=e.context.selectAll("."+r.lines).selectAll("."+r.line).data(e.lineData.bind(e)),e.contextLine.enter().append("path").attr("class",e.classLine.bind(e)).style("stroke",e.color),e.contextLine.style("opacity",e.initialOpacity.bind(e)),e.contextLine.exit().transition().duration(t).style("opacity",0).remove()},C.redrawLineForSubchart=function(t,e,i){(e?this.contextLine.transition(Math.random().toString()).duration(i):this.contextLine).attr("d",t).style("opacity",1)},C.updateAreaForSubchart=function(t){var e=this,i=e.d3;e.contextArea=e.context.selectAll("."+r.areas).selectAll("."+r.area).data(e.lineData.bind(e)),e.contextArea.enter().append("path").attr("class",e.classArea.bind(e)).style("fill",e.color).style("opacity",function(){return e.orgAreaOpacity=+i.select(this).style("opacity"),0}),e.contextArea.style("opacity",0),e.contextArea.exit().transition().duration(t).style("opacity",0).remove()},C.redrawAreaForSubchart=function(t,e,i){(e?this.contextArea.transition(Math.random().toString()).duration(i):this.contextArea).attr("d",t).style("fill",this.color).style("opacity",this.orgAreaOpacity)},C.redrawSubchart=function(t,e,i,n,a,r,o){var s,c,d,l=this,u=l.d3,h=l.config;l.context.style("visibility",h.subchart_show?"visible":"hidden"),h.subchart_show&&(u.event&&"zoom"===u.event.type&&l.brush.extent(l.x.orgDomain()).update(),t&&(l.brush.empty()||l.brush.extent(l.x.orgDomain()).update(),s=l.generateDrawArea(a,!0),c=l.generateDrawBar(r,!0),d=l.generateDrawLine(o,!0),l.updateBarForSubchart(i),l.updateLineForSubchart(i),l.updateAreaForSubchart(i),l.redrawBarForSubchart(c,i,i),l.redrawLineForSubchart(d,i,i),l.redrawAreaForSubchart(s,i,i)))},C.redrawForBrush=function(){var t=this,e=t.x;t.redraw({withTransition:!1,withY:t.config.zoom_rescale,withSubchart:!1,withUpdateXDomain:!0,withDimension:!1}),t.config.subchart_onbrush.call(t.api,e.orgDomain())},C.transformContext=function(t,e){var i,n=this;e&&e.axisSubX?i=e.axisSubX:(i=n.context.select("."+r.axisX),t&&(i=i.transition())),n.context.attr("transform",n.getTranslate("context")),i.attr("transform",n.getTranslate("subx"))},C.getDefaultExtent=function(){var t=this,e=t.config,i=u(e.axis_x_extent)?e.axis_x_extent(t.getXDomain(t.data.targets)):e.axis_x_extent;return t.isTimeSeries()&&(i=[t.parseDate(i[0]),t.parseDate(i[1])]),i},C.initText=function(){var t=this;t.main.select("."+r.chart).append("g").attr("class",r.chartTexts),t.mainText=t.d3.selectAll([])},C.updateTargetsForText=function(t){var e=this,i=e.classChartText.bind(e),n=e.classTexts.bind(e),a=e.classFocus.bind(e);e.main.select("."+r.chartTexts).selectAll("."+r.chartText).data(t).attr("class",function(t){return i(t)+a(t)}).enter().append("g").attr("class",i).style("opacity",0).style("pointer-events","none").append("g").attr("class",n)},C.updateText=function(t){var e=this,i=e.config,n=e.barOrLineData.bind(e),a=e.classText.bind(e);e.mainText=e.main.selectAll("."+r.texts).selectAll("."+r.text).data(n),e.mainText.enter().append("text").attr("class",a).attr("text-anchor",function(t){return i.axis_rotated?t.value<0?"end":"start":"middle"}).style("stroke","none").style("fill",function(t){return e.color(t)}).style("fill-opacity",0),e.mainText.text(function(t,i,n){return e.dataLabelFormat(t.id)(t.value,t.id,i,n)}),e.mainText.exit().transition().duration(t).style("fill-opacity",0).remove()},C.redrawText=function(t,e,i,n){return[(n?this.mainText.transition():this.mainText).attr("x",t).attr("y",e).style("fill",this.color).style("fill-opacity",i?0:this.opacityForText.bind(this))]},C.getTextRect=function(t,e,i){var 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diff --git a/web/lib/clipboard-polyfill-be05dad.js b/web/gui/lib/clipboard-polyfill-be05dad.js
index 55ccd36fb..d1ba02ee3 100644
--- a/web/lib/clipboard-polyfill-be05dad.js
+++ b/web/gui/lib/clipboard-polyfill-be05dad.js
@@ -4,5 +4,6 @@
  * @license   Licensed under MIT license
  *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
  * @version   4.1.1
+ * SPDX-License-Identifier: MIT
  */
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index 97e95812f..3d91d1abb 100644
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e=Math.sqrt(n/s_),r=e*c_;t.moveTo(0,-e),t.lineTo(r,0),t.lineTo(0,e),t.lineTo(-r,0),t.closePath()}},l_=Math.sin(n_/10)/Math.sin(7*n_/10),h_=Math.sin(r_/10)*l_,p_=-Math.cos(r_/10)*l_,d_={draw:function(t,n){var e=Math.sqrt(.8908130915292852*n),r=h_*e,i=p_*e;t.moveTo(0,-e),t.lineTo(r,i);for(var o=1;o<5;++o){var u=r_*o/5,a=Math.cos(u),c=Math.sin(u);t.lineTo(c*e,-a*e),t.lineTo(a*r-c*i,c*r+a*i)}t.closePath()}},v_={draw:function(t,n){var e=Math.sqrt(n),r=-e/2;t.rect(r,r,e,e)}},g_=Math.sqrt(3),__={draw:function(t,n){var e=-Math.sqrt(n/(3*g_));t.moveTo(0,2*e),t.lineTo(-g_*e,-e),t.lineTo(g_*e,-e),t.closePath()}},y_=Math.sqrt(3)/2,m_=1/Math.sqrt(12),x_=3*(m_/2+1),b_={draw:function(t,n){var e=Math.sqrt(n/x_),r=e/2,i=e*m_,o=r,u=e*m_+e,a=-o,c=u;t.moveTo(r,i),t.lineTo(o,u),t.lineTo(a,c),t.lineTo(-.5*r-y_*i,y_*r+-.5*i),t.lineTo(-.5*o-y_*u,y_*o+-.5*u),t.lineTo(-.5*a-y_*c,y_*a+-.5*c),t.lineTo(-.5*r+y_*i,-.5*i-y_*r),t.lineTo(-.5*o+y_*u,-.5*u-y_*o),t.lineTo(-.5*a+y_*c,-.5*c-y_*a),t.closePath()}},w_=[u_,a_,f_,v_,d_,__,b_];Tc.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._y0=this._y1=NaN,this._point=0},lineEnd:function(){switch(this._point){case 3:Mc(this,this._x1,this._y1);case 2:this._context.lineTo(this._x1,this._y1)}(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2;break;case 2:this._point=3,this._context.lineTo((5*this._x0+this._x1)/6,(5*this._y0+this._y1)/6);default:Mc(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},Nc.prototype={areaStart:wc,areaEnd:wc,lineStart:function(){this._x0=this._x1=this._x2=this._x3=this._x4=this._y0=this._y1=this._y2=this._y3=this._y4=NaN,this._point=0},lineEnd:function(){switch(this._point){case 1:this._context.moveTo(this._x2,this._y2),this._context.closePath();break;case 2:this._context.moveTo((this._x2+2*this._x3)/3,(this._y2+2*this._y3)/3),this._context.lineTo((this._x3+2*this._x2)/3,(this._y3+2*this._y2)/3),this._context.closePath();break;case 3:this.point(this._x2,this._y2),this.point(this._x3,this._y3),this.point(this._x4,this._y4)}},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._x2=t,this._y2=n;break;case 1:this._point=2,this._x3=t,this._y3=n;break;case 2:this._point=3,this._x4=t,this._y4=n,this._context.moveTo((this._x0+4*this._x1+t)/6,(this._y0+4*this._y1+n)/6);break;default:Mc(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},kc.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._y0=this._y1=NaN,this._point=0},lineEnd:function(){(this._line||0!==this._line&&3===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1;break;case 1:this._point=2;break;case 2:this._point=3;var e=(this._x0+4*this._x1+t)/6,r=(this._y0+4*this._y1+n)/6;this._line?this._context.lineTo(e,r):this._context.moveTo(e,r);break;case 3:this._point=4;default:Mc(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},Sc.prototype={lineStart:function(){this._x=[],this._y=[],this._basis.lineStart()},lineEnd:function(){var t=this._x,n=this._y,e=t.length-1;if(e>0)for(var r,i=t[0],o=n[0],u=t[e]-i,a=n[e]-o,c=-1;++c<=e;)r=c/e,this._basis.point(this._beta*t[c]+(1-this._beta)*(i+r*u),this._beta*n[c]+(1-this._beta)*(o+r*a));this._x=this._y=null,this._basis.lineEnd()},point:function(t,n){this._x.push(+t),this._y.push(+n)}};var M_=function t(n){function e(t){return 1===n?new Tc(t):new Sc(t,n)}return e.beta=function(n){return t(+n)},e}(.85);Ac.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._x2=this._y0=this._y1=this._y2=NaN,this._point=0},lineEnd:function(){switch(this._point){case 2:this._context.lineTo(this._x2,this._y2);break;case 3:Ec(this,this._x1,this._y1)}(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2,this._x1=t,this._y1=n;break;case 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2:this._point=3,this._x5=t,this._y5=n;break;default:Ec(this,t,n)}this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var N_=function t(n){function e(t){return new Cc(t,n)}return e.tension=function(n){return t(+n)},e}(0);zc.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._x2=this._y0=this._y1=this._y2=NaN,this._point=0},lineEnd:function(){(this._line||0!==this._line&&3===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1;break;case 1:this._point=2;break;case 2:this._point=3,this._line?this._context.lineTo(this._x2,this._y2):this._context.moveTo(this._x2,this._y2);break;case 3:this._point=4;default:Ec(this,t,n)}this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var k_=function t(n){function e(t){return new zc(t,n)}return 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n?new qc(t,n):new zc(t,0)}return e.alpha=function(n){return t(+n)},e}(.5);Dc.prototype={areaStart:wc,areaEnd:wc,lineStart:function(){this._point=0},lineEnd:function(){this._point&&this._context.closePath()},point:function(t,n){t=+t,n=+n,this._point?this._context.lineTo(t,n):(this._point=1,this._context.moveTo(t,n))}},Yc.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._y0=this._y1=this._t0=NaN,this._point=0},lineEnd:function(){switch(this._point){case 2:this._context.lineTo(this._x1,this._y1);break;case 3:Ic(this,this._t0,Fc(this,this._t0))}(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){var e=NaN;if(t=+t,n=+n,t!==this._x1||n!==this._y1){switch(this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2;break;case 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e=Math.sqrt(n/s_),r=e*c_;t.moveTo(0,-e),t.lineTo(r,0),t.lineTo(0,e),t.lineTo(-r,0),t.closePath()}},l_=Math.sin(n_/10)/Math.sin(7*n_/10),h_=Math.sin(r_/10)*l_,p_=-Math.cos(r_/10)*l_,d_={draw:function(t,n){var e=Math.sqrt(.8908130915292852*n),r=h_*e,i=p_*e;t.moveTo(0,-e),t.lineTo(r,i);for(var o=1;o<5;++o){var u=r_*o/5,a=Math.cos(u),c=Math.sin(u);t.lineTo(c*e,-a*e),t.lineTo(a*r-c*i,c*r+a*i)}t.closePath()}},v_={draw:function(t,n){var e=Math.sqrt(n),r=-e/2;t.rect(r,r,e,e)}},g_=Math.sqrt(3),__={draw:function(t,n){var e=-Math.sqrt(n/(3*g_));t.moveTo(0,2*e),t.lineTo(-g_*e,-e),t.lineTo(g_*e,-e),t.closePath()}},y_=Math.sqrt(3)/2,m_=1/Math.sqrt(12),x_=3*(m_/2+1),b_={draw:function(t,n){var e=Math.sqrt(n/x_),r=e/2,i=e*m_,o=r,u=e*m_+e,a=-o,c=u;t.moveTo(r,i),t.lineTo(o,u),t.lineTo(a,c),t.lineTo(-.5*r-y_*i,y_*r+-.5*i),t.lineTo(-.5*o-y_*u,y_*o+-.5*u),t.lineTo(-.5*a-y_*c,y_*a+-.5*c),t.lineTo(-.5*r+y_*i,-.5*i-y_*r),t.lineTo(-.5*o+y_*u,-.5*u-y_*o),t.lineTo(-.5*a+y_*c,-.5*c-y_*a),t.closePath()}},w_=[u_,a_,f_,v_,d_,__,b_];Tc.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._y0=this._y1=NaN,this._point=0},lineEnd:function(){switch(this._point){case 3:Mc(this,this._x1,this._y1);case 2:this._context.lineTo(this._x1,this._y1)}(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2;break;case 2:this._point=3,this._context.lineTo((5*this._x0+this._x1)/6,(5*this._y0+this._y1)/6);default:Mc(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},Nc.prototype={areaStart:wc,areaEnd:wc,lineStart:function(){this._x0=this._x1=this._x2=this._x3=this._x4=this._y0=this._y1=this._y2=this._y3=this._y4=NaN,this._point=0},lineEnd:function(){switch(this._point){case 1:this._context.moveTo(this._x2,this._y2),this._context.closePath();break;case 2:this._context.moveTo((this._x2+2*this._x3)/3,(this._y2+2*this._y3)/3),this._context.lineTo((this._x3+2*this._x2)/3,(this._y3+2*this._y2)/3),this._context.closePath();break;case 3:this.point(this._x2,this._y2),this.point(this._x3,this._y3),this.point(this._x4,this._y4)}},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._x2=t,this._y2=n;break;case 1:this._point=2,this._x3=t,this._y3=n;break;case 2:this._point=3,this._x4=t,this._y4=n,this._context.moveTo((this._x0+4*this._x1+t)/6,(this._y0+4*this._y1+n)/6);break;default:Mc(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},kc.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._y0=this._y1=NaN,this._point=0},lineEnd:function(){(this._line||0!==this._line&&3===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1;break;case 1:this._point=2;break;case 2:this._point=3;var e=(this._x0+4*this._x1+t)/6,r=(this._y0+4*this._y1+n)/6;this._line?this._context.lineTo(e,r):this._context.moveTo(e,r);break;case 3:this._point=4;default:Mc(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},Sc.prototype={lineStart:function(){this._x=[],this._y=[],this._basis.lineStart()},lineEnd:function(){var t=this._x,n=this._y,e=t.length-1;if(e>0)for(var 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2:this._point=3;default:Ec(this,t,n)}this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var T_=function t(n){function e(t){return new Ac(t,n)}return e.tension=function(n){return t(+n)},e}(0);Cc.prototype={areaStart:wc,areaEnd:wc,lineStart:function(){this._x0=this._x1=this._x2=this._x3=this._x4=this._x5=this._y0=this._y1=this._y2=this._y3=this._y4=this._y5=NaN,this._point=0},lineEnd:function(){switch(this._point){case 1:this._context.moveTo(this._x3,this._y3),this._context.closePath();break;case 2:this._context.lineTo(this._x3,this._y3),this._context.closePath();break;case 3:this.point(this._x3,this._y3),this.point(this._x4,this._y4),this.point(this._x5,this._y5)}},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._x3=t,this._y3=n;break;case 1:this._point=2,this._context.moveTo(this._x4=t,this._y4=n);break;case 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diff --git a/web/lib/d3pie-0.2.1-netdata-3.js b/web/gui/lib/d3pie-0.2.1-netdata-3.js
index e6ef064af..3b00b495b 100644
--- a/web/lib/d3pie-0.2.1-netdata-3.js
+++ b/web/gui/lib/d3pie-0.2.1-netdata-3.js
@@ -4,6 +4,7 @@
  * @version 0.1.9
  * @date June 17th, 2015
  * @repo http://github.com/benkeen/d3pie
+ * SPDX-License-Identifier: MIT
  */
 
 // UMD pattern from https://github.com/umdjs/umd/blob/master/returnExports.js
diff --git a/web/lib/dygraph-c91c859.min.js b/web/gui/lib/dygraph-c91c859.min.js
index 7ebbdd448..1713fee87 100644
--- a/web/lib/dygraph-c91c859.min.js
+++ b/web/gui/lib/dygraph-c91c859.min.js
@@ -1,6 +1,7 @@
 /*! @license Copyright 2017 Dan Vanderkam (danvdk@gmail.com) MIT-licensed (http://opensource.org/licenses/MIT) */
+// SPDX-License-Identifier: MIT
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t&&t.__esModule?t:{default:t}}(r),s=function(t,e,a,i){if(this.dygraph_=t,this.layout=i,this.element=e,this.elementContext=a,this.height=t.height_,this.width=t.width_,!n.isCanvasSupported(this.element))throw"Canvas is not supported.";this.area=i.getPlotArea();var r=this.dygraph_.canvas_ctx_;r.beginPath(),r.rect(this.area.x,this.area.y,this.area.w,this.area.h),r.clip(),r=this.dygraph_.hidden_ctx_,r.beginPath(),r.rect(this.area.x,this.area.y,this.area.w,this.area.h),r.clip()};s.prototype.clear=function(){this.elementContext.clearRect(0,0,this.width,this.height)},s.prototype.render=function(){this._updatePoints(),this._renderLineChart()},s._getIteratorPredicate=function(t){return t?s._predicateThatSkipsEmptyPoints:null},s._predicateThatSkipsEmptyPoints=function(t,e){return null!==t[e].yval},s._drawStyledLine=function(t,e,a,i,r,o,l){var h=t.dygraph,u=h.getBooleanOption("stepPlot",t.setName);n.isArrayLike(i)||(i=null);var d=h.getBooleanOption("drawGapEdgePoints",t.setName),c=t.points,p=t.setName,g=n.createIterator(c,0,c.length,s._getIteratorPredicate(h.getBooleanOption("connectSeparatedPoints",p))),f=i&&i.length>=2,v=t.drawingContext;v.save(),f&&v.setLineDash&&v.setLineDash(i);var _=s._drawSeries(t,g,a,l,r,d,u,e);s._drawPointsOnLine(t,_,o,e,l),f&&v.setLineDash&&v.setLineDash([]),v.restore()},s._drawSeries=function(t,e,a,i,n,r,o,s){var l,h,u=null,d=null,c=null,p=[],g=!0,f=t.drawingContext;f.beginPath(),f.strokeStyle=s,f.lineWidth=a;for(var v=e.array_,_=e.end_,y=e.predicate_,x=e.start_;x<_;x++){if(h=v[x],y){for(;x<_&&!y(v,x);)x++;if(x==_)break;h=v[x]}if(null===h.canvasy||h.canvasy!=h.canvasy)o&&null!==u&&(f.moveTo(u,d),f.lineTo(h.canvasx,d)),u=d=null;else{if(l=!1,r||null===u){e.nextIdx_=x,e.next(),c=e.hasNext?e.peek.canvasy:null;var m=null===c||c!=c;l=null===u&&m,r&&(!g&&null===u||e.hasNext&&m)&&(l=!0)}null!==u?a&&(o&&(f.moveTo(u,d),f.lineTo(h.canvasx,d)),f.lineTo(h.canvasx,h.canvasy)):f.moveTo(h.canvasx,h.canvasy),(n||l)&&p.push([h.canvasx,h.canvasy,h.idx]),u=h.canvasx,d=h.canvasy}g=!1}return f.stroke(),p},s._drawPointsOnLine=function(t,e,a,i,n){for(var r=t.drawingContext,o=0;o<e.length;o++){var s=e[o];r.save(),a.call(t.dygraph,t.dygraph,t.setName,r,s[0],s[1],i,n,s[2]),r.restore()}},s.prototype._updatePoints=function(){for(var t=this.layout.points,e=t.length;e--;)for(var a=t[e],i=a.length;i--;){var n=a[i];n.canvasx=this.area.w*n.x+this.area.x,n.canvasy=this.area.h*n.y+this.area.y}},s.prototype._renderLineChart=function(t,e){var a,i,r=e||this.elementContext,o=this.layout.points,s=this.layout.setNames;this.colors=this.dygraph_.colorsMap_;var l=this.dygraph_.getOption("plotter"),h=l;n.isArrayLike(h)||(h=[h]);var u={};for(a=0;a<s.length;a++){i=s[a];var d=this.dygraph_.getOption("plotter",i);d!=l&&(u[i]=d)}for(a=0;a<h.length;a++)for(var c=h[a],p=a==h.length-1,g=0;g<o.length;g++)if(i=s[g],!t||i==t){var f=o[g],v=c;if(i in u){if(!p)continue;v=u[i]}var _=this.colors[i],y=this.dygraph_.getOption("strokeWidth",i);r.save(),r.strokeStyle=_,r.lineWidth=y,v({points:f,setName:i,drawingContext:r,color:_,strokeWidth:y,dygraph:this.dygraph_,axis:this.dygraph_.axisPropertiesForSeries(i),plotArea:this.area,seriesIndex:g,seriesCount:o.length,singleSeriesName:t,allSeriesPoints:o}),r.restore()}},s._Plotters={linePlotter:function(t){s._linePlotter(t)},fillPlotter:function(t){s._fillPlotter(t)},errorPlotter:function(t){s._errorPlotter(t)}},s._linePlotter=function(t){var e=t.dygraph,a=t.setName,i=t.strokeWidth,r=e.getNumericOption("strokeBorderWidth",a),o=e.getOption("drawPointCallback",a)||n.Circles.DEFAULT,l=e.getOption("strokePattern",a),h=e.getBooleanOption("drawPoints",a),u=e.getNumericOption("pointSize",a);r&&i&&s._drawStyledLine(t,e.getOption("strokeBorderColor",a),i+2*r,l,h,o,u),s._drawStyledLine(t,t.color,i,l,h,o,u)},s._errorPlotter=function(t){var e=t.dygraph,a=t.setName;if(e.getBooleanOption("errorBars")||e.getBooleanOption("customBars")){e.getBooleanOption("fillGraph",a)&&console.warn("Can't use fillGraph option with error bars");var i,r=t.drawingContext,o=t.color,l=e.getNumericOption("fillAlpha",a),h=e.getBooleanOption("stepPlot",a),u=t.points,d=n.createIterator(u,0,u.length,s._getIteratorPredicate(e.getBooleanOption("connectSeparatedPoints",a))),c=NaN,p=NaN,g=[-1,-1],f=n.toRGB_(o),v="rgba("+f.r+","+f.g+","+f.b+","+l+")";r.fillStyle=v,r.beginPath();for(var _=function(t){return null===t||void 0===t||isNaN(t)};d.hasNext;){var y=d.next();!h&&_(y.y)||h&&!isNaN(p)&&_(p)?c=NaN:(i=[y.y_bottom,y.y_top],h&&(p=y.y),isNaN(i[0])&&(i[0]=y.y),isNaN(i[1])&&(i[1]=y.y),i[0]=t.plotArea.h*i[0]+t.plotArea.y,i[1]=t.plotArea.h*i[1]+t.plotArea.y,isNaN(c)||(h?(r.moveTo(c,g[0]),r.lineTo(y.canvasx,g[0]),r.lineTo(y.canvasx,g[1])):(r.moveTo(c,g[0]),r.lineTo(y.canvasx,i[0]),r.lineTo(y.canvasx,i[1])),r.lineTo(c,g[1]),r.closePath()),g=i,c=y.canvasx)}r.fill()}},s._fastCanvasProxy=function(t){var e=[],a=null,i=null,n=0,r=function(t){if(!(e.length<=1)){for(var a=e.length-1;a>0;a--){var i=e[a];if(2==i[0]){var n=e[a-1];n[1]==i[1]&&n[2]==i[2]&&e.splice(a,1)}}for(var a=0;a<e.length-1;){var i=e[a];2==i[0]&&2==e[a+1][0]?e.splice(a,1):a++}if(e.length>2&&!t){var r=0;2==e[0][0]&&r++;for(var o=null,s=null,a=r;a<e.length;a++){var i=e[a];if(1==i[0])if(null===o&&null===s)o=a,s=a;else{var l=i[2];l<e[o][2]?o=a:l>e[s][2]&&(s=a)}}var h=e[o],u=e[s];e.splice(r,e.length-r),o<s?(e.push(h),e.push(u)):o>s?(e.push(u),e.push(h)):e.push(h)}}},o=function(a){r(a);for(var o=0,s=e.length;o<s;o++){var l=e[o];1==l[0]?t.lineTo(l[1],l[2]):2==l[0]&&t.moveTo(l[1],l[2])}e.length&&(i=e[e.length-1][1]),n+=e.length,e=[]},s=function(t,n,r){var s=Math.round(n);if(null===a||s!=a){var l=a-i>1,h=s-a>1;o(l||h),a=s}e.push([t,n,r])};return{moveTo:function(t,e){s(2,t,e)},lineTo:function(t,e){s(1,t,e)},stroke:function(){o(!0),t.stroke()},fill:function(){o(!0),t.fill()},beginPath:function(){o(!0),t.beginPath()},closePath:function(){o(!0),t.closePath()},_count:function(){return n}}},s._fillPlotter=function(t){if(!t.singleSeriesName&&0===t.seriesIndex){for(var e=t.dygraph,a=e.getLabels().slice(1),i=a.length;i>=0;i--)e.visibility()[i]||a.splice(i,1);if(function(){for(var t=0;t<a.length;t++)if(e.getBooleanOption("fillGraph",a[t]))return!0;return!1}())for(var r,l,h=t.plotArea,u=t.allSeriesPoints,d=u.length,c=e.getBooleanOption("stackedGraph"),p=e.getColors(),g={},f=function(t,e,a,i){if(t.lineTo(e,a),c)for(var n=i.length-1;n>=0;n--){var r=i[n];t.lineTo(r[0],r[1])}},v=d-1;v>=0;v--){var _=t.drawingContext,y=a[v];if(e.getBooleanOption("fillGraph",y)){var x=e.getNumericOption("fillAlpha",y),m=e.getBooleanOption("stepPlot",y),b=p[v],w=e.axisPropertiesForSeries(y),A=1+w.minyval*w.yscale;A<0?A=0:A>1&&(A=1),A=h.h*A+h.y;var O,D=u[v],E=n.createIterator(D,0,D.length,s._getIteratorPredicate(e.getBooleanOption("connectSeparatedPoints",y))),L=NaN,T=[-1,-1],S=n.toRGB_(b),P="rgba("+S.r+","+S.g+","+S.b+","+x+")";_.fillStyle=P,_.beginPath();var C,M=!0;(D.length>2*e.width_||o.default.FORCE_FAST_PROXY)&&(_=s._fastCanvasProxy(_));for(var N,F=[];E.hasNext;)if(N=E.next(),n.isOK(N.y)||m){if(c){if(!M&&C==N.xval)continue;M=!1,C=N.xval,r=g[N.canvasx];var k;k=void 0===r?A:l?r[0]:r,O=[N.canvasy,k],m?-1===T[0]?g[N.canvasx]=[N.canvasy,A]:g[N.canvasx]=[N.canvasy,T[0]]:g[N.canvasx]=N.canvasy}else O=isNaN(N.canvasy)&&m?[h.y+h.h,A]:[N.canvasy,A];isNaN(L)?(_.moveTo(N.canvasx,O[1]),_.lineTo(N.canvasx,O[0])):(m?(_.lineTo(N.canvasx,T[0]),_.lineTo(N.canvasx,O[0])):_.lineTo(N.canvasx,O[0]),c&&(F.push([L,T[1]]),l&&r?F.push([N.canvasx,r[1]]):F.push([N.canvasx,O[1]]))),T=O,L=N.canvasx}else f(_,L,T[1],F),F=[],L=NaN,null===N.y_stacked||isNaN(N.y_stacked)||(g[N.canvasx]=h.h*N.y_stacked+h.y);l=m,O&&N&&(f(_,N.canvasx,O[1],F),F=[]),_.fill()}}}},a.default=s,e.exports=a.default},{"./dygraph":18,"./dygraph-utils":17}],10:[function(t,e,a){"use strict";function i(t){return t&&t.__esModule?t:{default:t}}function n(t){if(t&&t.__esModule)return t;var e={};if(null!=t)for(var a in t)Object.prototype.hasOwnProperty.call(t,a)&&(e[a]=t[a]);return e.default=t,e}Object.defineProperty(a,"__esModule",{value:!0});var r=t("./dygraph-tickers"),o=n(r),s=t("./dygraph-interaction-model"),l=i(s),h=t("./dygraph-canvas"),u=i(h),d=t("./dygraph-utils"),c=n(d),p={highlightCircleSize:3,highlightSeriesOpts:null,highlightSeriesBackgroundAlpha:.5,highlightSeriesBackgroundColor:"rgb(255, 255, 255)",labelsSeparateLines:!1,labelsShowZeroValues:!0,labelsKMB:!1,labelsKMG2:!1,showLabelsOnHighlight:!0,digitsAfterDecimal:2,maxNumberWidth:6,sigFigs:null,strokeWidth:1,strokeBorderWidth:0,strokeBorderColor:"white",axisTickSize:3,axisLabelFontSize:14,rightGap:5,showRoller:!1,xValueParser:void 0,delimiter:",",sigma:2,errorBars:!1,fractions:!1,wilsonInterval:!0,customBars:!1,fillGraph:!1,fillAlpha:.15,connectSeparatedPoints:!1,stackedGraph:!1,stackedGraphNaNFill:"all",hideOverlayOnMouseOut:!0,legend:"onmouseover",stepPlot:!1,xRangePad:0,yRangePad:null,drawAxesAtZero:!1,titleHeight:28,xLabelHeight:18,yLabelWidth:18,axisLineColor:"black",axisLineWidth:.3,gridLineWidth:.3,axisLabelWidth:50,gridLineColor:"rgb(128,128,128)",interactionModel:l.default.defaultModel,animatedZooms:!1,showRangeSelector:!1,rangeSelectorHeight:40,rangeSelectorPlotStrokeColor:"#808FAB",rangeSelectorPlotFillGradientColor:"white",rangeSelectorPlotFillColor:"#A7B1C4",rangeSelectorBackgroundStrokeColor:"gray",rangeSelectorBackgroundLineWidth:1,rangeSelectorPlotLineWidth:1.5,rangeSelectorForegroundStrokeColor:"black",rangeSelectorForegroundLineWidth:1,rangeSelectorAlpha:.6,showInRangeSelector:null,plotter:[u.default._fillPlotter,u.default._errorPlotter,u.default._linePlotter],plugins:[],axes:{x:{pixelsPerLabel:70,axisLabelWidth:60,axisLabelFormatter:c.dateAxisLabelFormatter,valueFormatter:c.dateValueFormatter,drawGrid:!0,drawAxis:!0,independentTicks:!0,ticker:o.dateTicker},y:{axisLabelWidth:50,pixelsPerLabel:30,valueFormatter:c.numberValueFormatter,axisLabelFormatter:c.numberAxisLabelFormatter,drawGrid:!0,drawAxis:!0,independentTicks:!0,ticker:o.numericTicks},y2:{axisLabelWidth:50,pixelsPerLabel:30,valueFormatter:c.numberValueFormatter,axisLabelFormatter:c.numberAxisLabelFormatter,drawAxis:!0,drawGrid:!1,independentTicks:!1,ticker:o.numericTicks}}};a.default=p,e.exports=a.default},{"./dygraph-canvas":9,"./dygraph-interaction-model":12,"./dygraph-tickers":16,"./dygraph-utils":17}],11:[function(t,e,a){"use strict";Object.defineProperty(a,"__esModule",{value:!0});var i=t("./dygraph"),n=function(t){return t&&t.__esModule?t:{default:t}}(i),r=function(t){this.container=t};r.prototype.draw=function(t,e){this.container.innerHTML="",void 0!==this.date_graph&&this.date_graph.destroy(),this.date_graph=new n.default(this.container,t,e)},r.prototype.setSelection=function(t){var e=!1;t.length&&(e=t[0].row),this.date_graph.setSelection(e)},r.prototype.getSelection=function(){var t=[],e=this.date_graph.getSelection();if(e<0)return t;for(var a=this.date_graph.layout_.points,i=0;i<a.length;++i)t.push({row:e,column:i+1});return t},a.default=r,e.exports=a.default},{"./dygraph":18}],12:[function(t,e,a){"use strict";Object.defineProperty(a,"__esModule",{value:!0});var i=t("./dygraph-utils"),n=function(t){if(t&&t.__esModule)return t;var e={};if(null!=t)for(var a in t)Object.prototype.hasOwnProperty.call(t,a)&&(e[a]=t[a]);return e.default=t,e}(i),r={};r.maybeTreatMouseOpAsClick=function(t,e,a){a.dragEndX=n.dragGetX_(t,a),a.dragEndY=n.dragGetY_(t,a);var i=Math.abs(a.dragEndX-a.dragStartX),o=Math.abs(a.dragEndY-a.dragStartY);i<2&&o<2&&void 0!==e.lastx_&&-1!=e.lastx_&&r.treatMouseOpAsClick(e,t,a),a.regionWidth=i,a.regionHeight=o},r.startPan=function(t,e,a){var i,r;a.isPanning=!0;var o=e.xAxisRange();if(e.getOptionForAxis("logscale","x")?(a.initialLeftmostDate=n.log10(o[0]),a.dateRange=n.log10(o[1])-n.log10(o[0])):(a.initialLeftmostDate=o[0],a.dateRange=o[1]-o[0]),a.xUnitsPerPixel=a.dateRange/(e.plotter_.area.w-1),e.getNumericOption("panEdgeFraction")){var s=e.width_*e.getNumericOption("panEdgeFraction"),l=e.xAxisExtremes(),h=e.toDomXCoord(l[0])-s,u=e.toDomXCoord(l[1])+s,d=e.toDataXCoord(h),c=e.toDataXCoord(u);a.boundedDates=[d,c];var p=[],g=e.height_*e.getNumericOption("panEdgeFraction");for(i=0;i<e.axes_.length;i++){r=e.axes_[i];var f=r.extremeRange,v=e.toDomYCoord(f[0],i)+g,_=e.toDomYCoord(f[1],i)-g,y=e.toDataYCoord(v,i),x=e.toDataYCoord(_,i);p[i]=[y,x]}a.boundedValues=p}for(a.is2DPan=!1,a.axes=[],i=0;i<e.axes_.length;i++){r=e.axes_[i];var m={},b=e.yAxisRange(i);e.attributes_.getForAxis("logscale",i)?(m.initialTopValue=n.log10(b[1]),m.dragValueRange=n.log10(b[1])-n.log10(b[0])):(m.initialTopValue=b[1],m.dragValueRange=b[1]-b[0]),m.unitsPerPixel=m.dragValueRange/(e.plotter_.area.h-1),a.axes.push(m),r.valueRange&&(a.is2DPan=!0)}},r.movePan=function(t,e,a){a.dragEndX=n.dragGetX_(t,a),a.dragEndY=n.dragGetY_(t,a);var i=a.initialLeftmostDate-(a.dragEndX-a.dragStartX)*a.xUnitsPerPixel;a.boundedDates&&(i=Math.max(i,a.boundedDates[0]));var r=i+a.dateRange;if(a.boundedDates&&r>a.boundedDates[1]&&(i-=r-a.boundedDates[1],r=i+a.dateRange),e.getOptionForAxis("logscale","x")?e.dateWindow_=[Math.pow(n.LOG_SCALE,i),Math.pow(n.LOG_SCALE,r)]:e.dateWindow_=[i,r],a.is2DPan)for(var o=a.dragEndY-a.dragStartY,s=0;s<e.axes_.length;s++){var l=e.axes_[s],h=a.axes[s],u=o*h.unitsPerPixel,d=a.boundedValues?a.boundedValues[s]:null,c=h.initialTopValue+u;d&&(c=Math.min(c,d[1]));var p=c-h.dragValueRange;d&&p<d[0]&&(c-=p-d[0],p=c-h.dragValueRange),e.attributes_.getForAxis("logscale",s)?l.valueRange=[Math.pow(n.LOG_SCALE,p),Math.pow(n.LOG_SCALE,c)]:l.valueRange=[p,c]}e.drawGraph_(!1)},r.endPan=r.maybeTreatMouseOpAsClick,r.startZoom=function(t,e,a){a.isZooming=!0,a.zoomMoved=!1},r.moveZoom=function(t,e,a){a.zoomMoved=!0,a.dragEndX=n.dragGetX_(t,a),a.dragEndY=n.dragGetY_(t,a);var i=Math.abs(a.dragStartX-a.dragEndX),r=Math.abs(a.dragStartY-a.dragEndY);a.dragDirection=i<r/2?n.VERTICAL:n.HORIZONTAL,e.drawZoomRect_(a.dragDirection,a.dragStartX,a.dragEndX,a.dragStartY,a.dragEndY,a.prevDragDirection,a.prevEndX,a.prevEndY),a.prevEndX=a.dragEndX,a.prevEndY=a.dragEndY,a.prevDragDirection=a.dragDirection},r.treatMouseOpAsClick=function(t,e,a){for(var i=t.getFunctionOption("clickCallback"),n=t.getFunctionOption("pointClickCallback"),r=null,o=-1,s=Number.MAX_VALUE,l=0;l<t.selPoints_.length;l++){var h=t.selPoints_[l],u=Math.pow(h.canvasx-a.dragEndX,2)+Math.pow(h.canvasy-a.dragEndY,2);!isNaN(u)&&(-1==o||u<s)&&(s=u,o=l)}var d=t.getNumericOption("highlightCircleSize")+2;if(s<=d*d&&(r=t.selPoints_[o]),r){var c={cancelable:!0,point:r,canvasx:a.dragEndX,canvasy:a.dragEndY};if(t.cascadeEvents_("pointClick",c))return;n&&n.call(t,e,r)}var c={cancelable:!0,xval:t.lastx_,pts:t.selPoints_,canvasx:a.dragEndX,canvasy:a.dragEndY};t.cascadeEvents_("click",c)||i&&i.call(t,e,t.lastx_,t.selPoints_)},r.endZoom=function(t,e,a){e.clearZoomRect_(),a.isZooming=!1,r.maybeTreatMouseOpAsClick(t,e,a);var i=e.getArea();if(a.regionWidth>=10&&a.dragDirection==n.HORIZONTAL){var o=Math.min(a.dragStartX,a.dragEndX),s=Math.max(a.dragStartX,a.dragEndX);o=Math.max(o,i.x),s=Math.min(s,i.x+i.w),o<s&&e.doZoomX_(o,s),a.cancelNextDblclick=!0}else if(a.regionHeight>=10&&a.dragDirection==n.VERTICAL){var l=Math.min(a.dragStartY,a.dragEndY),h=Math.max(a.dragStartY,a.dragEndY);l=Math.max(l,i.y),h=Math.min(h,i.y+i.h),l<h&&e.doZoomY_(l,h),a.cancelNextDblclick=!0}a.dragStartX=null,a.dragStartY=null},r.startTouch=function(t,e,a){t.preventDefault(),t.touches.length>1&&(a.startTimeForDoubleTapMs=null);for(var i=[],n=0;n<t.touches.length;n++){var r=t.touches[n];i.push({pageX:r.pageX,pageY:r.pageY,dataX:e.toDataXCoord(r.pageX),dataY:e.toDataYCoord(r.pageY)})}if(a.initialTouches=i,1==i.length)a.initialPinchCenter=i[0],a.touchDirections={x:!0,y:!0};else if(i.length>=2){a.initialPinchCenter={pageX:.5*(i[0].pageX+i[1].pageX),pageY:.5*(i[0].pageY+i[1].pageY),dataX:.5*(i[0].dataX+i[1].dataX),dataY:.5*(i[0].dataY+i[1].dataY)};var o=180/Math.PI*Math.atan2(a.initialPinchCenter.pageY-i[0].pageY,i[0].pageX-a.initialPinchCenter.pageX);o=Math.abs(o),o>90&&(o=90-o),a.touchDirections={x:o<67.5,y:o>22.5}}a.initialRange={x:e.xAxisRange(),y:e.yAxisRange()}},r.moveTouch=function(t,e,a){a.startTimeForDoubleTapMs=null;var i,n=[];for(i=0;i<t.touches.length;i++){var r=t.touches[i];n.push({pageX:r.pageX,pageY:r.pageY})}var o,s=a.initialTouches,l=a.initialPinchCenter;o=1==n.length?n[0]:{pageX:.5*(n[0].pageX+n[1].pageX),pageY:.5*(n[0].pageY+n[1].pageY)};var h={pageX:o.pageX-l.pageX,pageY:o.pageY-l.pageY},u=a.initialRange.x[1]-a.initialRange.x[0],d=a.initialRange.y[0]-a.initialRange.y[1];h.dataX=h.pageX/e.plotter_.area.w*u,h.dataY=h.pageY/e.plotter_.area.h*d;var c,p;if(1==n.length)c=1,p=1;else if(n.length>=2){var g=s[1].pageX-l.pageX;c=(n[1].pageX-o.pageX)/g;var f=s[1].pageY-l.pageY;p=(n[1].pageY-o.pageY)/f}c=Math.min(8,Math.max(.125,c)),p=Math.min(8,Math.max(.125,p));var v=!1;if(a.touchDirections.x&&(e.dateWindow_=[l.dataX-h.dataX+(a.initialRange.x[0]-l.dataX)/c,l.dataX-h.dataX+(a.initialRange.x[1]-l.dataX)/c],v=!0),a.touchDirections.y)for(i=0;i<1;i++){var _=e.axes_[i],y=e.attributes_.getForAxis("logscale",i);y||(_.valueRange=[l.dataY-h.dataY+(a.initialRange.y[0]-l.dataY)/p,l.dataY-h.dataY+(a.initialRange.y[1]-l.dataY)/p],v=!0)}if(e.drawGraph_(!1),v&&n.length>1&&e.getFunctionOption("zoomCallback")){var x=e.xAxisRange();e.getFunctionOption("zoomCallback").call(e,x[0],x[1],e.yAxisRanges())}},r.endTouch=function(t,e,a){if(0!==t.touches.length)r.startTouch(t,e,a);else if(1==t.changedTouches.length){var i=(new Date).getTime(),n=t.changedTouches[0];a.startTimeForDoubleTapMs&&i-a.startTimeForDoubleTapMs<500&&a.doubleTapX&&Math.abs(a.doubleTapX-n.screenX)<50&&a.doubleTapY&&Math.abs(a.doubleTapY-n.screenY)<50?e.resetZoom():(a.startTimeForDoubleTapMs=i,a.doubleTapX=n.screenX,a.doubleTapY=n.screenY)}};var o=function(t,e,a){return t<e?e-t:t>a?t-a:0},s=function(t,e){var a=n.findPos(e.canvas_),i={left:a.x,right:a.x+e.canvas_.offsetWidth,top:a.y,bottom:a.y+e.canvas_.offsetHeight},r={x:n.pageX(t),y:n.pageY(t)},s=o(r.x,i.left,i.right),l=o(r.y,i.top,i.bottom);return Math.max(s,l)};r.defaultModel={mousedown:function(t,e,a){if(!t.button||2!=t.button){a.initializeMouseDown(t,e,a),t.altKey||t.shiftKey?r.startPan(t,e,a):r.startZoom(t,e,a);var i=function(t){if(a.isZooming){s(t,e)<100?r.moveZoom(t,e,a):null!==a.dragEndX&&(a.dragEndX=null,a.dragEndY=null,e.clearZoomRect_())}else a.isPanning&&r.movePan(t,e,a)},o=function t(o){a.isZooming?null!==a.dragEndX?r.endZoom(o,e,a):r.maybeTreatMouseOpAsClick(o,e,a):a.isPanning&&r.endPan(o,e,a),n.removeEvent(document,"mousemove",i),n.removeEvent(document,"mouseup",t),a.destroy()};e.addAndTrackEvent(document,"mousemove",i),e.addAndTrackEvent(document,"mouseup",o)}},willDestroyContextMyself:!0,touchstart:function(t,e,a){r.startTouch(t,e,a)},touchmove:function(t,e,a){r.moveTouch(t,e,a)},touchend:function(t,e,a){r.endTouch(t,e,a)},dblclick:function(t,e,a){if(a.cancelNextDblclick)return void(a.cancelNextDblclick=!1);var i={canvasx:a.dragEndX,canvasy:a.dragEndY,cancelable:!0};e.cascadeEvents_("dblclick",i)||t.altKey||t.shiftKey||e.resetZoom()}},r.nonInteractiveModel_={mousedown:function(t,e,a){a.initializeMouseDown(t,e,a)},mouseup:r.maybeTreatMouseOpAsClick},r.dragIsPanInteractionModel={mousedown:function(t,e,a){a.initializeMouseDown(t,e,a),r.startPan(t,e,a)},mousemove:function(t,e,a){a.isPanning&&r.movePan(t,e,a)},mouseup:function(t,e,a){a.isPanning&&r.endPan(t,e,a)}},a.default=r,e.exports=a.default},{"./dygraph-utils":17}],13:[function(t,e,a){"use strict";Object.defineProperty(a,"__esModule",{value:!0});var i=t("./dygraph-utils"),n=function(t){if(t&&t.__esModule)return t;var e={};if(null!=t)for(var a in t)Object.prototype.hasOwnProperty.call(t,a)&&(e[a]=t[a]);return e.default=t,e}(i),r=function(t){this.dygraph_=t,this.points=[],this.setNames=[],this.annotations=[],this.yAxes_=null,this.xTicks_=null,this.yTicks_=null};r.prototype.addDataset=function(t,e){this.points.push(e),this.setNames.push(t)},r.prototype.getPlotArea=function(){return this.area_},r.prototype.computePlotArea=function(){var t={x:0,y:0};t.w=this.dygraph_.width_-t.x-this.dygraph_.getOption("rightGap"),t.h=this.dygraph_.height_;var e={chart_div:this.dygraph_.graphDiv,reserveSpaceLeft:function(e){var a={x:t.x,y:t.y,w:e,h:t.h};return t.x+=e,t.w-=e,a},reserveSpaceRight:function(e){var a={x:t.x+t.w-e,y:t.y,w:e,h:t.h};return t.w-=e,a},reserveSpaceTop:function(e){var a={x:t.x,y:t.y,w:t.w,h:e};return t.y+=e,t.h-=e,a},reserveSpaceBottom:function(e){var a={x:t.x,y:t.y+t.h-e,w:t.w,h:e};return t.h-=e,a},chartRect:function(){return{x:t.x,y:t.y,w:t.w,h:t.h}}};this.dygraph_.cascadeEvents_("layout",e),this.area_=t},r.prototype.setAnnotations=function(t){this.annotations=[];for(var e=this.dygraph_.getOption("xValueParser")||function(t){return t},a=0;a<t.length;a++){var i={};if(!t[a].xval&&void 0===t[a].x)return void console.error("Annotations must have an 'x' property");if(t[a].icon&&(!t[a].hasOwnProperty("width")||!t[a].hasOwnProperty("height")))return void console.error("Must set width and height when setting annotation.icon property");n.update(i,t[a]),i.xval||(i.xval=e(i.x)),this.annotations.push(i)}},r.prototype.setXTicks=function(t){this.xTicks_=t},r.prototype.setYAxes=function(t){this.yAxes_=t},r.prototype.evaluate=function(){this._xAxis={},this._evaluateLimits(),this._evaluateLineCharts(),this._evaluateLineTicks(),this._evaluateAnnotations()},r.prototype._evaluateLimits=function(){var t=this.dygraph_.xAxisRange();this._xAxis.minval=t[0],this._xAxis.maxval=t[1];var e=t[1]-t[0];this._xAxis.scale=0!==e?1/e:1,this.dygraph_.getOptionForAxis("logscale","x")&&(this._xAxis.xlogrange=n.log10(this._xAxis.maxval)-n.log10(this._xAxis.minval),this._xAxis.xlogscale=0!==this._xAxis.xlogrange?1/this._xAxis.xlogrange:1);for(var a=0;a<this.yAxes_.length;a++){var i=this.yAxes_[a];i.minyval=i.computedValueRange[0],i.maxyval=i.computedValueRange[1],i.yrange=i.maxyval-i.minyval,i.yscale=0!==i.yrange?1/i.yrange:1,this.dygraph_.getOption("logscale")&&(i.ylogrange=n.log10(i.maxyval)-n.log10(i.minyval),i.ylogscale=0!==i.ylogrange?1/i.ylogrange:1,isFinite(i.ylogrange)&&!isNaN(i.ylogrange)||console.error("axis "+a+" of graph at "+i.g+" can't be displayed in log scale for range ["+i.minyval+" - "+i.maxyval+"]"))}},r.calcXNormal_=function(t,e,a){return a?(n.log10(t)-n.log10(e.minval))*e.xlogscale:(t-e.minval)*e.scale},r.calcYNormal_=function(t,e,a){if(a){var i=1-(n.log10(e)-n.log10(t.minyval))*t.ylogscale;return isFinite(i)?i:NaN}return 1-(e-t.minyval)*t.yscale},r.prototype._evaluateLineCharts=function(){for(var t=this.dygraph_.getOption("stackedGraph"),e=this.dygraph_.getOptionForAxis("logscale","x"),a=0;a<this.points.length;a++){for(var i=this.points[a],n=this.setNames[a],o=this.dygraph_.getOption("connectSeparatedPoints",n),s=this.dygraph_.axisPropertiesForSeries(n),l=this.dygraph_.attributes_.getForSeries("logscale",n),h=0;h<i.length;h++){var u=i[h];u.x=r.calcXNormal_(u.xval,this._xAxis,e);var d=u.yval;t&&(u.y_stacked=r.calcYNormal_(s,u.yval_stacked,l),
 null===d||isNaN(d)||(d=u.yval_stacked)),null===d&&(d=NaN,o||(u.yval=NaN)),u.y=r.calcYNormal_(s,d,l)}this.dygraph_.dataHandler_.onLineEvaluated(i,s,l)}},r.prototype._evaluateLineTicks=function(){var t,e,a,i,n,r;for(this.xticks=[],t=0;t<this.xTicks_.length;t++)e=this.xTicks_[t],a=e.label,r=!("label_v"in e),n=r?e.v:e.label_v,(i=this.dygraph_.toPercentXCoord(n))>=0&&i<1&&this.xticks.push({pos:i,label:a,has_tick:r});for(this.yticks=[],t=0;t<this.yAxes_.length;t++)for(var o=this.yAxes_[t],s=0;s<o.ticks.length;s++)e=o.ticks[s],a=e.label,r=!("label_v"in e),n=r?e.v:e.label_v,(i=this.dygraph_.toPercentYCoord(n,t))>0&&i<=1&&this.yticks.push({axis:t,pos:i,label:a,has_tick:r})},r.prototype._evaluateAnnotations=function(){var t,e={};for(t=0;t<this.annotations.length;t++){var a=this.annotations[t];e[a.xval+","+a.series]=a}if(this.annotated_points=[],this.annotations&&this.annotations.length)for(var i=0;i<this.points.length;i++){var n=this.points[i];for(t=0;t<n.length;t++){var r=n[t],o=r.xval+","+r.name;o in e&&(r.annotation=e[o],this.annotated_points.push(r))}}},r.prototype.removeAllDatasets=function(){delete this.points,delete this.setNames,delete this.setPointsLengths,delete this.setPointsOffsets,this.points=[],this.setNames=[],this.setPointsLengths=[],this.setPointsOffsets=[]},a.default=r,e.exports=a.default},{"./dygraph-utils":17}],14:[function(t,e,a){(function(t){"use strict";Object.defineProperty(a,"__esModule",{value:!0});var i=null;if(void 0!==t);a.default=i,e.exports=a.default}).call(this,t("_process"))},{_process:1}],15:[function(t,e,a){(function(i){"use strict";function n(t){return t&&t.__esModule?t:{default:t}}Object.defineProperty(a,"__esModule",{value:!0});var r=t("./dygraph-utils"),o=function(t){if(t&&t.__esModule)return t;var e={};if(null!=t)for(var a in t)Object.prototype.hasOwnProperty.call(t,a)&&(e[a]=t[a]);return e.default=t,e}(r),s=t("./dygraph-default-attrs"),l=n(s),h=t("./dygraph-options-reference"),u=(n(h),function(t){this.dygraph_=t,this.yAxes_=[],this.xAxis_={},this.series_={},this.global_=this.dygraph_.attrs_,this.user_=this.dygraph_.user_attrs_||{},this.labels_=[],this.highlightSeries_=this.get("highlightSeriesOpts")||{},this.reparseSeries()});if(u.AXIS_STRING_MAPPINGS_={y:0,Y:0,y1:0,Y1:0,y2:1,Y2:1},u.axisToIndex_=function(t){if("string"==typeof t){if(u.AXIS_STRING_MAPPINGS_.hasOwnProperty(t))return u.AXIS_STRING_MAPPINGS_[t];throw"Unknown axis : "+t}if("number"==typeof t){if(0===t||1===t)return t;throw"Dygraphs only supports two y-axes, indexed from 0-1."}if(t)throw"Unknown axis : "+t;return 0},u.prototype.reparseSeries=function(){var t=this.get("labels");if(t){this.labels_=t.slice(1),this.yAxes_=[{series:[],options:{}}],this.xAxis_={options:{}},this.series_={};for(var e=this.user_.series||{},a=0;a<this.labels_.length;a++){var i=this.labels_[a],n=e[i]||{},r=u.axisToIndex_(n.axis);this.series_[i]={idx:a,yAxis:r,options:n},this.yAxes_[r]?this.yAxes_[r].series.push(i):this.yAxes_[r]={series:[i],options:{}}}var s=this.user_.axes||{};o.update(this.yAxes_[0].options,s.y||{}),this.yAxes_.length>1&&o.update(this.yAxes_[1].options,s.y2||{}),o.update(this.xAxis_.options,s.x||{})}},u.prototype.get=function(t){var e=this.getGlobalUser_(t);return null!==e?e:this.getGlobalDefault_(t)},u.prototype.getGlobalUser_=function(t){return this.user_.hasOwnProperty(t)?this.user_[t]:null},u.prototype.getGlobalDefault_=function(t){return this.global_.hasOwnProperty(t)?this.global_[t]:l.default.hasOwnProperty(t)?l.default[t]:null},u.prototype.getForAxis=function(t,e){var a,i;if("number"==typeof e)a=e,i=0===a?"y":"y2";else{if("y1"==e&&(e="y"),"y"==e)a=0;else if("y2"==e)a=1;else{if("x"!=e)throw"Unknown axis "+e;a=-1}i=e}var n=-1==a?this.xAxis_:this.yAxes_[a];if(n){var r=n.options;if(r.hasOwnProperty(t))return r[t]}if("x"!==e||"logscale"!==t){var o=this.getGlobalUser_(t);if(null!==o)return o}var s=l.default.axes[i];return s.hasOwnProperty(t)?s[t]:this.getGlobalDefault_(t)},u.prototype.getForSeries=function(t,e){if(e===this.dygraph_.getHighlightSeries()&&this.highlightSeries_.hasOwnProperty(t))return this.highlightSeries_[t];if(!this.series_.hasOwnProperty(e))throw"Unknown series: "+e;var a=this.series_[e],i=a.options;return i.hasOwnProperty(t)?i[t]:this.getForAxis(t,a.yAxis)},u.prototype.numAxes=function(){return this.yAxes_.length},u.prototype.axisForSeries=function(t){return this.series_[t].yAxis},u.prototype.axisOptions=function(t){return this.yAxes_[t].options},u.prototype.seriesForAxis=function(t){return this.yAxes_[t].series},u.prototype.seriesNames=function(){return this.labels_},void 0!==i);a.default=u,e.exports=a.default}).call(this,t("_process"))},{"./dygraph-default-attrs":10,"./dygraph-options-reference":14,"./dygraph-utils":17,_process:1}],16:[function(t,e,a){"use 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t.valueRange}),this.drawGraph_(),void(u&&u.call(this,o,l,this.yAxisRanges()));var d=null,c=null,p=null,g=null;e&&(d=this.xAxisRange(),c=[o,l]),a&&(p=this.yAxisRanges(),g=this.yAxisExtremes()),this.doAnimatedZoom(d,c,p,g,function(){t.dateWindow_=null,t.axes_.forEach(function(t){t.valueRange&&delete t.valueRange}),u&&u.call(t,o,l,t.yAxisRanges())})}},Q.prototype.doAnimatedZoom=function(t,e,a,i,n){var r,o,s=this,l=this.getBooleanOption("animatedZooms")?Q.ANIMATION_STEPS:1,h=[],u=[];if(null!==t&&null!==e)for(r=1;r<=l;r++)o=Q.zoomAnimationFunction(r,l),h[r-1]=[t[0]*(1-o)+o*e[0],t[1]*(1-o)+o*e[1]];if(null!==a&&null!==i)for(r=1;r<=l;r++){o=Q.zoomAnimationFunction(r,l);for(var d=[],c=0;c<this.axes_.length;c++)d.push([a[c][0]*(1-o)+o*i[c][0],a[c][1]*(1-o)+o*i[c][1]]);u[r-1]=d}x.repeatAndCleanup(function(t){if(u.length)for(var e=0;e<s.axes_.length;e++){var a=u[t][e];s.axes_[e].valueRange=[a[0],a[1]]}h.length&&(s.dateWindow_=h[t]),s.drawGraph_()},l,Q.ANIMATION_DURATION/l,n)},Q.prototype.getArea=function(){return this.plotter_.area},Q.prototype.eventToDomCoords=function(t){if(t.offsetX&&t.offsetY)return[t.offsetX,t.offsetY];var e=x.findPos(this.mouseEventElement_);return[x.pageX(t)-e.x,x.pageY(t)-e.y]},Q.prototype.findClosestRow=function(t){for(var e=1/0,a=-1,i=this.layout_.points,n=0;n<i.length;n++)for(var r=i[n],o=r.length,s=0;s<o;s++){var l=r[s];if(x.isValidPoint(l,!0)){var h=Math.abs(l.canvasx-t);h<e&&(e=h,a=l.idx)}}return a},Q.prototype.findClosestPoint=function(t,e){for(var a,i,n,r,o,s,l,h=1/0,u=this.layout_.points.length-1;u>=0;--u)for(var d=this.layout_.points[u],c=0;c<d.length;++c)r=d[c],x.isValidPoint(r)&&(i=r.canvasx-t,n=r.canvasy-e,(a=i*i+n*n)<h&&(h=a,o=r,s=u,l=r.idx));return{row:l,seriesName:this.layout_.setNames[s],point:o}},Q.prototype.findStackedPoint=function(t,e){for(var a,i,n=this.findClosestRow(t),r=0;r<this.layout_.points.length;++r){var o=this.getLeftBoundary_(r),s=n-o,l=this.layout_.points[r];if(!(s>=l.length)){var h=l[s];if(x.isValidPoint(h)){var u=h.canvasy;if(t>h.canvasx&&s+1<l.length){var d=l[s+1];if(x.isValidPoint(d)){var c=d.canvasx-h.canvasx;if(c>0){var p=(t-h.canvasx)/c;u+=p*(d.canvasy-h.canvasy)}}}else if(t<h.canvasx&&s>0){var g=l[s-1];if(x.isValidPoint(g)){var c=h.canvasx-g.canvasx;if(c>0){var p=(h.canvasx-t)/c;u+=p*(g.canvasy-h.canvasy)}}}(0===r||u<e)&&(a=h,i=r)}}}return{row:n,seriesName:this.layout_.setNames[i],point:a}},Q.prototype.mouseMove_=function(t){var e=this.layout_.points;if(void 0!==e&&null!==e){var a=this.eventToDomCoords(t),i=a[0],n=a[1],r=this.getOption("highlightSeriesOpts"),o=!1;if(r&&!this.isSeriesLocked()){var s;s=this.getBooleanOption("stackedGraph")?this.findStackedPoint(i,n):this.findClosestPoint(i,n),o=this.setSelection(s.row,s.seriesName)}else{var l=this.findClosestRow(i);o=this.setSelection(l)}var h=this.getFunctionOption("highlightCallback");h&&o&&h.call(this,t,this.lastx_,this.selPoints_,this.lastRow_,this.highlightSet_)}},Q.prototype.getLeftBoundary_=function(t){if(this.boundaryIds_[t])return this.boundaryIds_[t][0];for(var e=0;e<this.boundaryIds_.length;e++)if(void 0!==this.boundaryIds_[e])return this.boundaryIds_[e][0];return 0},Q.prototype.animateSelection_=function(t){void 0===this.fadeLevel&&(this.fadeLevel=0),void 0===this.animateId&&(this.animateId=0);var e=this.fadeLevel,a=t<0?e:10-e;if(a<=0)return void(this.fadeLevel&&this.updateSelection_(1));var i=++this.animateId,n=this,r=function(){0!==n.fadeLevel&&t<0&&(n.fadeLevel=0,n.clearSelection())};x.repeatAndCleanup(function(e){n.animateId==i&&(n.fadeLevel+=t,0===n.fadeLevel?n.clearSelection():n.updateSelection_(n.fadeLevel/10))},a,30,r)},Q.prototype.updateSelection_=function(t){this.cascadeEvents_("select",{selectedRow:-1===this.lastRow_?void 0:this.lastRow_,selectedX:-1===this.lastx_?void 0:this.lastx_,selectedPoints:this.selPoints_});var e,a=this.canvas_ctx_;if(this.getOption("highlightSeriesOpts")){a.clearRect(0,0,this.width_,this.height_);var i=1-this.getNumericOption("highlightSeriesBackgroundAlpha"),n=x.toRGB_(this.getOption("highlightSeriesBackgroundColor"));if(i){if(void 0===t)return void this.animateSelection_(1);i*=t,a.fillStyle="rgba("+n.r+","+n.g+","+n.b+","+i+")",a.fillRect(0,0,this.width_,this.height_)}this.plotter_._renderLineChart(this.highlightSet_,a)}else if(this.previousVerticalX_>=0){var r=0,o=this.attr_("labels");for(e=1;e<o.length;e++){var s=this.getNumericOption("highlightCircleSize",o[e]);s>r&&(r=s)}var l=this.previousVerticalX_;a.clearRect(l-r-1,0,2*r+2,this.height_)}if(this.selPoints_.length>0){var h=this.selPoints_[0].canvasx;for(a.save(),e=0;e<this.selPoints_.length;e++){var u=this.selPoints_[e];if(!isNaN(u.canvasy)){var d=this.getNumericOption("highlightCircleSize",u.name),c=this.getFunctionOption("drawHighlightPointCallback",u.name),p=this.plotter_.colors[u.name];c||(c=x.Circles.DEFAULT),a.lineWidth=this.getNumericOption("strokeWidth",u.name),a.strokeStyle=p,a.fillStyle=p,c.call(this,this,u.name,a,h,u.canvasy,p,d,u.idx)}}a.restore(),this.previousVerticalX_=h}},Q.prototype.setSelection=function(t,e,a){this.selPoints_=[];var i=!1;if(!1!==t&&t>=0){t!=this.lastRow_&&(i=!0),this.lastRow_=t;for(var n=0;n<this.layout_.points.length;++n){var r=this.layout_.points[n],o=t-this.getLeftBoundary_(n);if(o>=0&&o<r.length&&r[o].idx==t){var s=r[o];null!==s.yval&&this.selPoints_.push(s)}else for(var l=0;l<r.length;++l){var s=r[l];if(s.idx==t){null!==s.yval&&this.selPoints_.push(s);break}}}}else this.lastRow_>=0&&(i=!0),this.lastRow_=-1;return this.selPoints_.length?this.lastx_=this.selPoints_[0].xval:this.lastx_=-1,void 0!==e&&(this.highlightSet_!==e&&(i=!0),this.highlightSet_=e),void 0!==a&&(this.lockedSet_=a),i&&this.updateSelection_(void 0),i},Q.prototype.mouseOut_=function(t){this.getFunctionOption("unhighlightCallback")&&this.getFunctionOption("unhighlightCallback").call(this,t),this.getBooleanOption("hideOverlayOnMouseOut")&&!this.lockedSet_&&this.clearSelection()},Q.prototype.clearSelection=function(){if(this.cascadeEvents_("deselect",{}),this.lockedSet_=!1,this.fadeLevel)return void this.animateSelection_(-1);this.canvas_ctx_.clearRect(0,0,this.width_,this.height_),this.fadeLevel=0,this.selPoints_=[],this.lastx_=-1,this.lastRow_=-1,this.highlightSet_=null},Q.prototype.getSelection=function(){if(!this.selPoints_||this.selPoints_.length<1)return-1;for(var t=0;t<this.layout_.points.length;t++)for(var e=this.layout_.points[t],a=0;a<e.length;a++)if(e[a].x==this.selPoints_[0].x)return e[a].idx;return-1},Q.prototype.getHighlightSeries=function(){return this.highlightSet_},Q.prototype.isSeriesLocked=function(){return this.lockedSet_},Q.prototype.loadedEvent_=function(t){this.rawData_=this.parseCSV_(t),this.cascadeDataDidUpdateEvent_(),this.predraw_()},Q.prototype.addXTicks_=function(){var t;t=this.dateWindow_?[this.dateWindow_[0],this.dateWindow_[1]]:this.xAxisExtremes();var e=this.optionsViewForAxis_("x"),a=e("ticker")(t[0],t[1],this.plotter_.area.w,e,this);this.layout_.setXTicks(a)},Q.prototype.getHandlerClass_=function(){return this.attr_("dataHandler")?this.attr_("dataHandler"):this.fractions_?this.getBooleanOption("errorBars")?F.default:M.default:this.getBooleanOption("customBars")?P.default:this.getBooleanOption("errorBars")?T.default:E.default},Q.prototype.predraw_=function(){var t=new Date;this.dataHandler_=new(this.getHandlerClass_()),this.layout_.computePlotArea(),this.computeYAxes_(),this.is_initial_draw_||(this.canvas_ctx_.restore(),this.hidden_ctx_.restore()),this.canvas_ctx_.save(),this.hidden_ctx_.save(),this.plotter_=new d.default(this,this.hidden_,this.hidden_ctx_,this.layout_),this.createRollInterface_(),this.cascadeEvents_("predraw"),this.rolledSeries_=[null];for(var e=1;e<this.numColumns();e++){var a=this.dataHandler_.extractSeries(this.rawData_,e,this.attributes_);this.rollPeriod_>1&&(a=this.dataHandler_.rollingAverage(a,this.rollPeriod_,this.attributes_)),this.rolledSeries_.push(a)}this.drawGraph_();var i=new Date;this.drawingTimeMs_=i-t},Q.PointType=void 0,Q.stackPoints_=function(t,e,a,i){for(var n=null,r=null,o=null,s=-1,l=0;l<t.length;++l){var h=t[l],u=h.xval;void 0===e[u]&&(e[u]=0);var d=h.yval;isNaN(d)||null===d?"none"==i?d=0:(!function(e){if(!(s>=e))for(var a=e;a<t.length;++a)if(o=null,!isNaN(t[a].yval)&&null!==t[a].yval){s=a,o=t[a];break}}(l),d=r&&o&&"none"!=i?r.yval+(o.yval-r.yval)*((u-r.xval)/(o.xval-r.xval)):r&&"all"==i?r.yval:o&&"all"==i?o.yval:0):r=h;var c=e[u];n!=u&&(c+=d,e[u]=c),n=u,h.yval_stacked=c,c>a[1]&&(a[1]=c),c<a[0]&&(a[0]=c)}},Q.prototype.gatherDatasets_=function(t,e){var a,i,n,r,o,s,l=[],h=[],u=[],d={},c=t.length-1;for(a=c;a>=1;a--)if(this.visibility()[a-1]){if(e){s=t[a];var p=e[0],g=e[1];for(n=null,r=null,i=0;i<s.length;i++)s[i][0]>=p&&null===n&&(n=i),s[i][0]<=g&&(r=i);null===n&&(n=0);for(var f=n,v=!0;v&&f>0;)f--,v=null===s[f][1];null===r&&(r=s.length-1);var _=r;for(v=!0;v&&_<s.length-1;)_++,v=null===s[_][1];f!==n&&(n=f),_!==r&&(r=_),l[a-1]=[n,r],s=s.slice(n,r+1)}else s=t[a],l[a-1]=[0,s.length-1];var y=this.attr_("labels")[a],x=this.dataHandler_.getExtremeYValues(s,e,this.getBooleanOption("stepPlot",y)),m=this.dataHandler_.seriesToPoints(s,y,l[a-1][0]);this.getBooleanOption("stackedGraph")&&(o=this.attributes_.axisForSeries(y),void 0===u[o]&&(u[o]=[]),Q.stackPoints_(m,u[o],x,this.getBooleanOption("stackedGraphNaNFill"))),d[y]=x,h[a]=m}return{points:h,extremes:d,boundaryIds:l}},Q.prototype.drawGraph_=function(){var t=new Date,e=this.is_initial_draw_;this.is_initial_draw_=!1,this.layout_.removeAllDatasets(),this.setColors_(),this.attrs_.pointSize=.5*this.getNumericOption("highlightCircleSize");var a=this.gatherDatasets_(this.rolledSeries_,this.dateWindow_),i=a.points,n=a.extremes;this.boundaryIds_=a.boundaryIds,this.setIndexByName_={};for(var r=this.attr_("labels"),o=0,s=1;s<i.length;s++)this.visibility()[s-1]&&(this.layout_.addDataset(r[s],i[s]),this.datasetIndex_[s]=o++);for(var s=0;s<r.length;s++)this.setIndexByName_[r[s]]=s;if(this.computeYAxisRanges_(n),this.layout_.setYAxes(this.axes_),this.addXTicks_(),this.layout_.evaluate(),this.renderGraph_(e),this.getStringOption("timingName")){var l=new Date;console.log(this.getStringOption("timingName")+" - drawGraph: "+(l-t)+"ms")}},Q.prototype.renderGraph_=function(t){this.cascadeEvents_("clearChart"),this.plotter_.clear();var e=this.getFunctionOption("underlayCallback");e&&e.call(this,this.hidden_ctx_,this.layout_.getPlotArea(),this,this);var a={canvas:this.hidden_,drawingContext:this.hidden_ctx_};this.cascadeEvents_("willDrawChart",a),this.plotter_.render(),this.cascadeEvents_("didDrawChart",a),this.lastRow_=-1,this.canvas_.getContext("2d").clearRect(0,0,this.width_,this.height_);var i=this.getFunctionOption("drawCallback");if(null!==i&&i.call(this,this,t),t)for(this.readyFired_=!0;this.readyFns_.length>0;){var n=this.readyFns_.pop();n(this)}},Q.prototype.computeYAxes_=function(){var t,e,a;for(this.axes_=[],t=0;t<this.attributes_.numAxes();t++)e={g:this},x.update(e,this.attributes_.axisOptions(t)),this.axes_[t]=e;for(t=0;t<this.axes_.length;t++)if(0===t)e=this.optionsViewForAxis_("y"+(t?"2":"")),(a=e("valueRange"))&&(this.axes_[t].valueRange=a);else{var i=this.user_attrs_.axes;i&&i.y2&&(a=i.y2.valueRange)&&(this.axes_[t].valueRange=a)}},Q.prototype.numAxes=function(){return this.attributes_.numAxes()},Q.prototype.axisPropertiesForSeries=function(t){return this.axes_[this.attributes_.axisForSeries(t)]},Q.prototype.computeYAxisRanges_=function(t){for(var e,a,i,n,r,o=function(t){return isNaN(parseFloat(t))},s=this.attributes_.numAxes(),l=0;l<s;l++){var h=this.axes_[l],u=this.attributes_.getForAxis("logscale",l),d=this.attributes_.getForAxis("includeZero",l),c=this.attributes_.getForAxis("independentTicks",l);i=this.attributes_.seriesForAxis(l),e=!0,n=.1;var p=this.getNumericOption("yRangePad");if(null!==p&&(e=!1,n=p/this.plotter_.area.h),0===i.length)h.extremeRange=[0,1];else{for(var g,f,v=1/0,_=-1/0,y=0;y<i.length;y++)t.hasOwnProperty(i[y])&&(g=t[i[y]][0],null!==g&&(v=Math.min(g,v)),null!==(f=t[i[y]][1])&&(_=Math.max(f,_)));d&&!u&&(v>0&&(v=0),_<0&&(_=0)),v==1/0&&(v=0),_==-1/0&&(_=1),a=_-v,0===a&&(0!==_?a=Math.abs(_):(_=1,a=1));var m=_,b=v;e&&(u?(m=_+n*a,b=v):(m=_+n*a,b=v-n*a,b<0&&v>=0&&(b=0),m>0&&_<=0&&(m=0))),h.extremeRange=[b,m]}if(h.valueRange){var w=o(h.valueRange[0])?h.extremeRange[0]:h.valueRange[0],A=o(h.valueRange[1])?h.extremeRange[1]:h.valueRange[1];h.computedValueRange=[w,A]}else h.computedValueRange=h.extremeRange;if(!e)if(w=h.computedValueRange[0],A=h.computedValueRange[1],w===A&&(w-=.5,A+=.5),u){var O=n/(2*n-1),D=(n-1)/(2*n-1);h.computedValueRange[0]=x.logRangeFraction(w,A,O),h.computedValueRange[1]=x.logRangeFraction(w,A,D)}else a=A-w,h.computedValueRange[0]=w-a*n,h.computedValueRange[1]=A+a*n;if(c){h.independentTicks=c;var E=this.optionsViewForAxis_("y"+(l?"2":"")),L=E("ticker");h.ticks=L(h.computedValueRange[0],h.computedValueRange[1],this.plotter_.area.h,E,this),r||(r=h)}}if(void 0===r)throw'Configuration Error: At least one axis has to have the "independentTicks" option activated.';for(var l=0;l<s;l++){var h=this.axes_[l];if(!h.independentTicks){for(var E=this.optionsViewForAxis_("y"+(l?"2":"")),L=E("ticker"),T=r.ticks,S=r.computedValueRange[1]-r.computedValueRange[0],P=h.computedValueRange[1]-h.computedValueRange[0],C=[],M=0;M<T.length;M++){var N=(T[M].v-r.computedValueRange[0])/S,F=h.computedValueRange[0]+N*P;C.push(F)}h.ticks=L(h.computedValueRange[0],h.computedValueRange[1],this.plotter_.area.h,E,this,C)}}},Q.prototype.detectTypeFromString_=function(t){var e=!1,a=t.indexOf("-");a>0&&"e"!=t[a-1]&&"E"!=t[a-1]||t.indexOf("/")>=0||isNaN(parseFloat(t))?e=!0:8==t.length&&t>"19700101"&&t<"20371231"&&(e=!0),this.setXAxisOptions_(e)},Q.prototype.setXAxisOptions_=function(t){t?(this.attrs_.xValueParser=x.dateParser,this.attrs_.axes.x.valueFormatter=x.dateValueFormatter,this.attrs_.axes.x.ticker=_.dateTicker,this.attrs_.axes.x.axisLabelFormatter=x.dateAxisLabelFormatter):(this.attrs_.xValueParser=function(t){return parseFloat(t)},this.attrs_.axes.x.valueFormatter=function(t){return t},this.attrs_.axes.x.ticker=_.numericTicks,this.attrs_.axes.x.axisLabelFormatter=this.attrs_.axes.x.valueFormatter)},Q.prototype.parseCSV_=function(t){var e,a,i=[],n=x.detectLineDelimiter(t),r=t.split(n||"\n"),o=this.getStringOption("delimiter");-1==r[0].indexOf(o)&&r[0].indexOf("\t")>=0&&(o="\t");var s=0;"labels"in this.user_attrs_||(s=1,this.attrs_.labels=r[0].split(o),this.attributes_.reparseSeries());for(var l,h=!1,u=this.attr_("labels").length,d=!1,c=s;c<r.length;c++){var p=r[c];if(c,0!==p.length&&"#"!=p[0]){var g=p.split(o);if(!(g.length<2)){var f=[];if(h||(this.detectTypeFromString_(g[0]),l=this.getFunctionOption("xValueParser"),h=!0),f[0]=l(g[0],this),this.fractions_)for(a=1;a<g.length;a++)e=g[a].split("/"),2!=e.length?(console.error('Expected fractional "num/den" values in CSV data but found a value \''+g[a]+"' on line "+(1+c)+" ('"+p+"') which is not of this form."),f[a]=[0,0]):f[a]=[x.parseFloat_(e[0],c,p),x.parseFloat_(e[1],c,p)];else if(this.getBooleanOption("errorBars"))for(g.length%2!=1&&console.error("Expected alternating (value, stdev.) pairs in CSV data but line "+(1+c)+" has an odd number of values ("+(g.length-1)+"): '"+p+"'"),a=1;a<g.length;a+=2)f[(a+1)/2]=[x.parseFloat_(g[a],c,p),x.parseFloat_(g[a+1],c,p)];else if(this.getBooleanOption("customBars"))for(a=1;a<g.length;a++){var v=g[a];/^ *$/.test(v)?f[a]=[null,null,null]:(e=v.split(";"),3==e.length?f[a]=[x.parseFloat_(e[0],c,p),x.parseFloat_(e[1],c,p),x.parseFloat_(e[2],c,p)]:console.warn('When using customBars, values must be either blank or "low;center;high" tuples (got "'+v+'" on line '+(1+c)))}else for(a=1;a<g.length;a++)f[a]=x.parseFloat_(g[a],c,p);if(i.length>0&&f[0]<i[i.length-1][0]&&(d=!0),f.length!=u&&console.error("Number of columns in line "+c+" ("+f.length+") does not agree with number of labels ("+u+") "+p),0===c&&this.attr_("labels")){var _=!0;for(a=0;_&&a<f.length;a++)f[a]&&(_=!1);if(_){console.warn("The dygraphs 'labels' option is set, but the first row of CSV data ('"+p+"') appears to also contain labels. Will drop the CSV labels and use the option labels.");continue}}i.push(f)}}}return d&&(console.warn("CSV is out of order; order it correctly to speed loading."),i.sort(function(t,e){return t[0]-e[0]})),i},Q.prototype.parseArray_=function(t){if(0===t.length)return console.error("Can't plot empty data set"),null;if(0===t[0].length)return console.error("Data set cannot contain an empty row"),null;o(t);var e;if(null===this.attr_("labels")){for(console.warn("Using default labels. Set labels explicitly via 'labels' in the options parameter"),this.attrs_.labels=["X"],e=1;e<t[0].length;e++)this.attrs_.labels.push("Y"+e);this.attributes_.reparseSeries()}else{var a=this.attr_("labels");if(a.length!=t[0].length)return console.error("Mismatch between number of labels ("+a+") and number of columns in array ("+t[0].length+")"),null}if(x.isDateLike(t[0][0])){this.attrs_.axes.x.valueFormatter=x.dateValueFormatter,this.attrs_.axes.x.ticker=_.dateTicker,this.attrs_.axes.x.axisLabelFormatter=x.dateAxisLabelFormatter;var i=x.clone(t);for(e=0;e<t.length;e++){if(0===i[e].length)return console.error("Row "+(1+e)+" of data is empty"),null;if(null===i[e][0]||"function"!=typeof i[e][0].getTime||isNaN(i[e][0].getTime()))return console.error("x value in row "+(1+e)+" is not a Date"),null;i[e][0]=i[e][0].getTime()}return i}return this.attrs_.axes.x.valueFormatter=function(t){return t},this.attrs_.axes.x.ticker=_.numericTicks,this.attrs_.axes.x.axisLabelFormatter=x.numberAxisLabelFormatter,t},Q.prototype.parseDataTable_=function(t){var e=t.getNumberOfColumns(),a=t.getNumberOfRows(),i=t.getColumnType(0);if("date"==i||"datetime"==i)this.attrs_.xValueParser=x.dateParser,this.attrs_.axes.x.valueFormatter=x.dateValueFormatter,this.attrs_.axes.x.ticker=_.dateTicker,this.attrs_.axes.x.axisLabelFormatter=x.dateAxisLabelFormatter;else{if("number"!=i)throw new Error("only 'date', 'datetime' and 'number' types are supported for column 1 of DataTable input (Got '"+i+"')");this.attrs_.xValueParser=function(t){return parseFloat(t)},this.attrs_.axes.x.valueFormatter=function(t){return t},this.attrs_.axes.x.ticker=_.numericTicks,this.attrs_.axes.x.axisLabelFormatter=this.attrs_.axes.x.valueFormatter}var n,r,o=[],s={},l=!1;for(n=1;n<e;n++){var h=t.getColumnType(n);if("number"==h)o.push(n);else{if("string"!=h||!this.getBooleanOption("displayAnnotations"))throw new Error("Only 'number' is supported as a dependent type with Gviz. 'string' is only supported if displayAnnotations is true");var u=o[o.length-1];s.hasOwnProperty(u)?s[u].push(n):s[u]=[n],l=!0}}var d=[t.getColumnLabel(0)];for(n=0;n<o.length;n++)d.push(t.getColumnLabel(o[n])),this.getBooleanOption("errorBars")&&(n+=1);this.attrs_.labels=d,e=d.length;var c=[],p=!1,g=[];for(n=0;n<a;n++){var f=[];if(void 0!==t.getValue(n,0)&&null!==t.getValue(n,0)){if("date"==i||"datetime"==i?f.push(t.getValue(n,0).getTime()):f.push(t.getValue(n,0)),this.getBooleanOption("errorBars"))for(r=0;r<e-1;r++)f.push([t.getValue(n,1+2*r),t.getValue(n,2+2*r)]);else{for(r=0;r<o.length;r++){var v=o[r];if(f.push(t.getValue(n,v)),l&&s.hasOwnProperty(v)&&null!==t.getValue(n,s[v][0])){var y={};y.series=t.getColumnLabel(v),y.xval=f[0],y.shortText=function(t){var e=String.fromCharCode(65+t%26);for(t=Math.floor(t/26);t>0;)e=String.fromCharCode(65+(t-1)%26)+e.toLowerCase(),t=Math.floor((t-1)/26);return e}(g.length),y.text="";for(var m=0;m<s[v].length;m++)m&&(y.text+="\n"),y.text+=t.getValue(n,s[v][m]);g.push(y)}}for(r=0;r<f.length;r++)isFinite(f[r])||(f[r]=null)}c.length>0&&f[0]<c[c.length-1][0]&&(p=!0),c.push(f)}else console.warn("Ignoring row "+n+" of DataTable because of undefined or null first column.")}p&&(console.warn("DataTable is out of order; order it correctly to speed loading."),c.sort(function(t,e){return t[0]-e[0]})),this.rawData_=c,g.length>0&&this.setAnnotations(g,!0),this.attributes_.reparseSeries()},Q.prototype.cascadeDataDidUpdateEvent_=function(){this.cascadeEvents_("dataDidUpdate",{})},Q.prototype.start_=function(){var t=this.file_;if("function"==typeof t&&(t=t()),x.isArrayLike(t))this.rawData_=this.parseArray_(t),this.cascadeDataDidUpdateEvent_(),this.predraw_();else if("object"==typeof t&&"function"==typeof t.getColumnRange)this.parseDataTable_(t),this.cascadeDataDidUpdateEvent_(),this.predraw_();else if("string"==typeof t){var e=x.detectLineDelimiter(t);if(e)this.loadedEvent_(t);else{var a;a=window.XMLHttpRequest?new XMLHttpRequest:new ActiveXObject("Microsoft.XMLHTTP");var i=this;a.onreadystatechange=function(){4==a.readyState&&(200!==a.status&&0!==a.status||i.loadedEvent_(a.responseText))},a.open("GET",t,!0),a.send(null)}}else console.error("Unknown data format: "+typeof t)},Q.prototype.updateOptions=function(t,e){void 0===e&&(e=!1);var a=t.file,i=Q.copyUserAttrs_(t);"rollPeriod"in i&&(this.rollPeriod_=i.rollPeriod),"dateWindow"in i&&(this.dateWindow_=i.dateWindow);var n=x.isPixelChangingOptionList(this.attr_("labels"),i);x.updateDeep(this.user_attrs_,i),this.attributes_.reparseSeries(),a?(this.cascadeEvents_("dataWillUpdate",{}),this.file_=a,e||this.start_()):e||(n?this.predraw_():this.renderGraph_(!1))},Q.copyUserAttrs_=function(t){var e={};for(var a in t)t.hasOwnProperty(a)&&"file"!=a&&t.hasOwnProperty(a)&&(e[a]=t[a]);return e},Q.prototype.resize=function(t,e){if(!this.resize_lock){this.resize_lock=!0,null===t!=(null===e)&&(console.warn("Dygraph.resize() should be called with zero parameters or two non-NULL parameters. 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Try setting them in a ready() block. See dygraphs.com/tests/annotation.html");this.layout_.setAnnotations(this.annotations_),e||this.predraw_()},Q.prototype.annotations=function(){return this.annotations_},Q.prototype.getLabels=function(){var t=this.attr_("labels");return t?t.slice():null},Q.prototype.indexFromSetName=function(t){return this.setIndexByName_[t]},Q.prototype.getRowForX=function(t){for(var e=0,a=this.numRows()-1;e<=a;){var i=a+e>>1,n=this.getValue(i,0);if(n<t)e=i+1;else if(n>t)a=i-1;else{if(e==i)return i;a=i}}return null},Q.prototype.ready=function(t){this.is_initial_draw_?this.readyFns_.push(t):t.call(this,this)},Q.prototype.addAndTrackEvent=function(t,e,a){x.addEvent(t,e,a),this.registeredEvents_.push({elem:t,type:e,fn:a})},Q.prototype.removeTrackedEvents_=function(){if(this.registeredEvents_)for(var t=0;t<this.registeredEvents_.length;t++){var e=this.registeredEvents_[t];x.removeEvent(e.elem,e.type,e.fn)}this.registeredEvents_=[]},Q.PLUGINS=[U.default,X.default,j.default,Z.default,H.default,G.default],Q.GVizChart=q.default,Q.DASHED_LINE=x.DASHED_LINE,Q.DOT_DASH_LINE=x.DOT_DASH_LINE,Q.dateAxisLabelFormatter=x.dateAxisLabelFormatter,Q.toRGB_=x.toRGB_,Q.findPos=x.findPos,Q.pageX=x.pageX,Q.pageY=x.pageY,Q.dateString_=x.dateString_,Q.defaultInteractionModel=f.default.defaultModel,Q.nonInteractiveModel=Q.nonInteractiveModel_=f.default.nonInteractiveModel_,Q.Circles=x.Circles,Q.Plugins={Legend:U.default,Axes:X.default,Annotations:H.default,ChartLabels:Z.default,Grid:G.default,RangeSelector:j.default},Q.DataHandlers={DefaultHandler:E.default,BarsHandler:R.default,CustomBarsHandler:P.default,DefaultFractionHandler:M.default,ErrorBarsHandler:T.default,FractionsBarsHandler:F.default},Q.startPan=f.default.startPan,Q.startZoom=f.default.startZoom,Q.movePan=f.default.movePan,Q.moveZoom=f.default.moveZoom,Q.endPan=f.default.endPan,Q.endZoom=f.default.endZoom,Q.numericLinearTicks=_.numericLinearTicks,Q.numericTicks=_.numericTicks,Q.dateTicker=_.dateTicker,Q.Granularity=_.Granularity,Q.getDateAxis=_.getDateAxis,Q.floatFormat=x.floatFormat,a.default=Q,e.exports=a.default}).call(this,t("_process"))},{"./datahandler/bars":5,"./datahandler/bars-custom":2,"./datahandler/bars-error":3,"./datahandler/bars-fractions":4,"./datahandler/default":8,"./datahandler/default-fractions":7,"./dygraph-canvas":9,"./dygraph-default-attrs":10,"./dygraph-gviz":11,"./dygraph-interaction-model":12,"./dygraph-layout":13,"./dygraph-options":15,"./dygraph-options-reference":14,"./dygraph-tickers":16,"./dygraph-utils":17,"./iframe-tarp":19,"./plugins/annotations":20,"./plugins/axes":21,"./plugins/chart-labels":22,"./plugins/grid":23,"./plugins/legend":24,"./plugins/range-selector":25,_process:1}],19:[function(t,e,a){"use strict";function i(){this.tarps=[]}Object.defineProperty(a,"__esModule",{value:!0});var n=t("./dygraph-utils"),r=function(t){if(t&&t.__esModule)return t;var e={};if(null!=t)for(var a in t)Object.prototype.hasOwnProperty.call(t,a)&&(e[a]=t[a]);return e.default=t,e}(n);i.prototype.cover=function(){for(var t=document.getElementsByTagName("iframe"),e=0;e<t.length;e++){var a=t[e],i=r.findPos(a),n=i.x,o=i.y,s=a.offsetWidth,l=a.offsetHeight,h=document.createElement("div");h.style.position="absolute",h.style.left=n+"px",h.style.top=o+"px",h.style.width=s+"px",h.style.height=l+"px",h.style.zIndex=999,document.body.appendChild(h),this.tarps.push(h)}},i.prototype.uncover=function(){for(var t=0;t<this.tarps.length;t++)this.tarps[t].parentNode.removeChild(this.tarps[t]);this.tarps=[]},a.default=i,e.exports=a.default},{"./dygraph-utils":17}],20:[function(t,e,a){"use strict";Object.defineProperty(a,"__esModule",{value:!0});var i=function(){this.annotations_=[]};i.prototype.toString=function(){return"Annotations Plugin"},i.prototype.activate=function(t){return{clearChart:this.clearChart,didDrawChart:this.didDrawChart}},i.prototype.detachLabels=function(){for(var t=0;t<this.annotations_.length;t++){var e=this.annotations_[t];e.parentNode&&e.parentNode.removeChild(e),this.annotations_[t]=null}this.annotations_=[]},i.prototype.clearChart=function(t){this.detachLabels()},i.prototype.didDrawChart=function(t){var e=t.dygraph,a=e.layout_.annotated_points;if(a&&0!==a.length)for(var i=t.canvas.parentNode,n=function(t,a,i){return function(n){var r=i.annotation;r.hasOwnProperty(t)?r[t](r,i,e,n):e.getOption(a)&&e.getOption(a)(r,i,e,n)}},r=t.dygraph.getArea(),o={},s=0;s<a.length;s++){var l=a[s];if(!(l.canvasx<r.x||l.canvasx>r.x+r.w||l.canvasy<r.y||l.canvasy>r.y+r.h)){var h=l.annotation,u=6;h.hasOwnProperty("tickHeight")&&(u=h.tickHeight);var d=document.createElement("div");d.style.fontSize=e.getOption("axisLabelFontSize")+"px"
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e=s-D("axisLabelWidth")/2;e+D("axisLabelWidth")>d&&(e=d-D("axisLabelWidth"),o.style.textAlign="right"),e<0&&(e=0,o.style.textAlign="left"),o.style.left=e+"px",o.style.width=D("axisLabelWidth")+"px",u.appendChild(o),i.xlabels_.push(o)}})}h.strokeStyle=r.getOptionForAxis("axisLineColor","x"),h.lineWidth=r.getOptionForAxis("axisLineWidth","x"),h.beginPath();var E;if(r.getOption("drawAxesAtZero")){var O=r.toPercentYCoord(0,0);(O>1||O<0)&&(O=1),E=a(_.y+O*_.h)}else E=a(_.y+_.h);h.moveTo(e(_.x),E),h.lineTo(e(_.x+_.w),E),h.closePath(),h.stroke()}h.restore()}},a.default=r,e.exports=a.default},{"../dygraph-utils":17}],22:[function(t,e,a){"use strict";Object.defineProperty(a,"__esModule",{value:!0});var i=function(){this.title_div_=null,this.xlabel_div_=null,this.ylabel_div_=null,this.y2label_div_=null};i.prototype.toString=function(){return"ChartLabels Plugin"},i.prototype.activate=function(t){return{layout:this.layout,didDrawChart:this.didDrawChart}};var n=function(t){var e=document.createElement("div");return e.style.position="absolute",e.style.left=t.x+"px",e.style.top=t.y+"px",e.style.width=t.w+"px",e.style.height=t.h+"px",e};i.prototype.detachLabels_=function(){for(var t=[this.title_div_,this.xlabel_div_,this.ylabel_div_,this.y2label_div_],e=0;e<t.length;e++){var a=t[e];a&&(a.parentNode&&a.parentNode.removeChild(a))}this.title_div_=null,this.xlabel_div_=null,this.ylabel_div_=null,this.y2label_div_=null};var r=function(t,e,a,i,n){var r=document.createElement("div");r.style.position="absolute",r.style.left=1==a?"0px":e.x+"px",r.style.top=e.y+"px",r.style.width=e.w+"px",r.style.height=e.h+"px",r.style.fontSize=t.getOption("yLabelWidth")-2+"px";var o=document.createElement("div");o.style.position="absolute",o.style.width=e.h+"px",o.style.height=e.w+"px",o.style.top=e.h/2-e.w/2+"px",o.style.left=e.w/2-e.h/2+"px",o.className="dygraph-label-rotate-"+(1==a?"right":"left");var s=document.createElement("div");return s.className=i,s.innerHTML=n,o.appendChild(s),r.appendChild(o),r};i.prototype.layout=function(t){this.detachLabels_();var e=t.dygraph,a=t.chart_div;if(e.getOption("title")){var i=t.reserveSpaceTop(e.getOption("titleHeight"));this.title_div_=n(i),this.title_div_.style.fontSize=e.getOption("titleHeight")-8+"px";var o=document.createElement("div");o.className="dygraph-label dygraph-title",o.innerHTML=e.getOption("title"),this.title_div_.appendChild(o),a.appendChild(this.title_div_)}if(e.getOption("xlabel")){var s=t.reserveSpaceBottom(e.getOption("xLabelHeight"));this.xlabel_div_=n(s),this.xlabel_div_.style.fontSize=e.getOption("xLabelHeight")-2+"px";var o=document.createElement("div");o.className="dygraph-label dygraph-xlabel",o.innerHTML=e.getOption("xlabel"),this.xlabel_div_.appendChild(o),a.appendChild(this.xlabel_div_)}if(e.getOption("ylabel")){var l=t.reserveSpaceLeft(0);this.ylabel_div_=r(e,l,1,"dygraph-label dygraph-ylabel",e.getOption("ylabel")),a.appendChild(this.ylabel_div_)}if(e.getOption("y2label")&&2==e.numAxes()){var h=t.reserveSpaceRight(0);this.y2label_div_=r(e,h,2,"dygraph-label dygraph-y2label",e.getOption("y2label")),a.appendChild(this.y2label_div_)}},i.prototype.didDrawChart=function(t){var e=t.dygraph;this.title_div_&&(this.title_div_.children[0].innerHTML=e.getOption("title")),this.xlabel_div_&&(this.xlabel_div_.children[0].innerHTML=e.getOption("xlabel")),this.ylabel_div_&&(this.ylabel_div_.children[0].children[0].innerHTML=e.getOption("ylabel")),this.y2label_div_&&(this.y2label_div_.children[0].children[0].innerHTML=e.getOption("y2label"))},i.prototype.clearChart=function(){},i.prototype.destroy=function(){this.detachLabels_()},a.default=i,e.exports=a.default},{}],23:[function(t,e,a){"use strict";Object.defineProperty(a,"__esModule",{value:!0});var i=function(){};i.prototype.toString=function(){return"Gridline Plugin"},i.prototype.activate=function(t){return{willDrawChart:this.willDrawChart}},i.prototype.willDrawChart=function(t){function e(t){return Math.round(t)+.5}function a(t){return Math.round(t)-.5}var i,n,r,o,s=t.dygraph,l=t.drawingContext,h=s.layout_,u=t.dygraph.plotter_.area;if(s.getOptionForAxis("drawGrid","y")){for(var d=["y","y2"],c=[],p=[],g=[],f=[],v=[],r=0;r<d.length;r++)g[r]=s.getOptionForAxis("drawGrid",d[r]),g[r]&&(c[r]=s.getOptionForAxis("gridLineColor",d[r]),p[r]=s.getOptionForAxis("gridLineWidth",d[r]),v[r]=s.getOptionForAxis("gridLinePattern",d[r]),f[r]=v[r]&&v[r].length>=2);o=h.yticks,l.save(),o.forEach(function(t){if(t.has_tick){var r=t.axis;g[r]&&(l.save(),f[r]&&l.setLineDash&&l.setLineDash(v[r]),l.strokeStyle=c[r],l.lineWidth=p[r],i=e(u.x),n=a(u.y+t.pos*u.h),l.beginPath(),l.moveTo(i,n),l.lineTo(i+u.w,n),l.stroke(),l.restore())}}),l.restore()}if(s.getOptionForAxis("drawGrid","x")){o=h.xticks,l.save();var v=s.getOptionForAxis("gridLinePattern","x"),f=v&&v.length>=2;f&&l.setLineDash&&l.setLineDash(v),l.strokeStyle=s.getOptionForAxis("gridLineColor","x"),l.lineWidth=s.getOptionForAxis("gridLineWidth","x"),o.forEach(function(t){t.has_tick&&(i=e(u.x+t.pos*u.w),n=a(u.y+u.h),l.beginPath(),l.moveTo(i,n),l.lineTo(i,u.y),l.closePath(),l.stroke())}),f&&l.setLineDash&&l.setLineDash([]),l.restore()}},i.prototype.destroy=function(){},a.default=i,e.exports=a.default},{}],24:[function(t,e,a){"use strict";function i(t,e,a){if(!t||t.length<=1)return'<div class="dygraph-legend-line" style="border-bottom-color: '+e+';"></div>';var i,n,r,o,s,l=0,h=0,u=[];for(i=0;i<=t.length;i++)l+=t[i%t.length];if((s=Math.floor(a/(l-t[0])))>1){for(i=0;i<t.length;i++)u[i]=t[i]/a;h=u.length}else{for(s=1,i=0;i<t.length;i++)u[i]=t[i]/l;h=u.length+1}var d="";for(n=0;n<s;n++)for(i=0;i<h;i+=2)r=u[i%u.length],o=i<t.length?u[(i+1)%u.length]:0,d+='<div class="dygraph-legend-dash" style="margin-right: '+o+"em; padding-left: "+r+'em;"></div>';return d}Object.defineProperty(a,"__esModule",{value:!0});var n=t("../dygraph-utils"),r=function(t){if(t&&t.__esModule)return t;var e={};if(null!=t)for(var a in t)Object.prototype.hasOwnProperty.call(t,a)&&(e[a]=t[a]);return e.default=t,e}(n),o=function(){this.legend_div_=null,this.is_generated_div_=!1};o.prototype.toString=function(){return"Legend Plugin"},o.prototype.activate=function(t){var e,a=t.getOption("labelsDiv");return a&&null!==a?e="string"==typeof a||a instanceof String?document.getElementById(a):a:(e=document.createElement("div"),e.className="dygraph-legend",t.graphDiv.appendChild(e),this.is_generated_div_=!0),this.legend_div_=e,this.one_em_width_=10,{select:this.select,deselect:this.deselect,predraw:this.predraw,didDrawChart:this.didDrawChart}};var s=function(t){var e=document.createElement("span");e.setAttribute("style","margin: 0; padding: 0 0 0 1em; border: 0;"),t.appendChild(e);var a=e.offsetWidth;return t.removeChild(e),a},l=function(t){return t.replace(/&/g,"&amp;").replace(/"/g,"&quot;").replace(/</g,"&lt;").replace(/>/g,"&gt;")};o.prototype.select=function(t){var e=t.selectedX,a=t.selectedPoints,i=t.selectedRow,n=t.dygraph.getOption("legend");if("never"===n)return void(this.legend_div_.style.display="none");if("follow"===n){var r=t.dygraph.plotter_.area,s=this.legend_div_.offsetWidth,l=t.dygraph.getOptionForAxis("axisLabelWidth","y"),h=a[0].x*r.w+50,u=a[0].y*r.h-50;h+s+1>r.w&&(h=h-100-s-(l-r.x)),t.dygraph.graphDiv.appendChild(this.legend_div_),this.legend_div_.style.left=l+h+"px",this.legend_div_.style.top=u+"px"}var d=o.generateLegendHTML(t.dygraph,e,a,this.one_em_width_,i);this.legend_div_.innerHTML=d,this.legend_div_.style.display=""},o.prototype.deselect=function(t){"always"!==t.dygraph.getOption("legend")&&(this.legend_div_.style.display="none");var e=s(this.legend_div_);this.one_em_width_=e;var a=o.generateLegendHTML(t.dygraph,void 0,void 0,e,null);this.legend_div_.innerHTML=a},o.prototype.didDrawChart=function(t){this.deselect(t)},o.prototype.predraw=function(t){if(this.is_generated_div_){t.dygraph.graphDiv.appendChild(this.legend_div_);var e=t.dygraph.getArea(),a=this.legend_div_.offsetWidth;this.legend_div_.style.left=e.x+e.w-a-1+"px",this.legend_div_.style.top=e.y+"px"}},o.prototype.destroy=function(){this.legend_div_=null},o.generateLegendHTML=function(t,e,a,n,s){var h={dygraph:t,x:e,series:[]},u={},d=t.getLabels();if(d)for(var c=1;c<d.length;c++){var p=t.getPropertiesForSeries(d[c]),g=t.getOption("strokePattern",d[c]),f={dashHTML:i(g,p.color,n),label:d[c],labelHTML:l(d[c]),isVisible:p.visible,color:p.color};h.series.push(f),u[d[c]]=f}if(void 0!==e){var v=t.optionsViewForAxis_("x"),_=v("valueFormatter");h.xHTML=_.call(t,e,v,d[0],t,s,0);for(var y=[],x=t.numAxes(),c=0;c<x;c++)y[c]=t.optionsViewForAxis_("y"+(c?1+c:""));var m=t.getOption("labelsShowZeroValues"),b=t.getHighlightSeries();for(c=0;c<a.length;c++){var w=a[c],f=u[w.name];if(f.y=w.yval,0===w.yval&&!m||isNaN(w.canvasy))f.isVisible=!1;else{var p=t.getPropertiesForSeries(w.name),A=y[p.axis-1],O=A("valueFormatter"),D=O.call(t,w.yval,A,w.name,t,s,d.indexOf(w.name));r.update(f,{yHTML:D}),w.name==b&&(f.isHighlighted=!0)}}}return(t.getOption("legendFormatter")||o.defaultFormatter).call(t,h)},o.defaultFormatter=function(t){var e=t.dygraph;if(!0!==e.getOption("showLabelsOnHighlight"))return"";var a,i=e.getOption("labelsSeparateLines");if(void 0===t.x){if("always"!=e.getOption("legend"))return"";a="";for(var n=0;n<t.series.length;n++){var r=t.series[n];r.isVisible&&(""!==a&&(a+=i?"<br/>":" "),a+="<span style='font-weight: bold; color: "+r.color+";'>"+r.dashHTML+" "+r.labelHTML+"</span>")}return a}a=t.xHTML+":";for(var n=0;n<t.series.length;n++){var r=t.series[n];if(r.isVisible){i&&(a+="<br>");a+="<span"+(r.isHighlighted?' class="highlight"':"")+"> <b><span style='color: "+r.color+";'>"+r.labelHTML+"</span></b>:&#160;"+r.yHTML+"</span>"}}return a},a.default=o,e.exports=a.default},{"../dygraph-utils":17}],25:[function(t,e,a){"use strict";function i(t){return t&&t.__esModule?t:{default:t}}Object.defineProperty(a,"__esModule",{value:!0});var n=t("../dygraph-utils"),r=function(t){if(t&&t.__esModule)return t;var e={};if(null!=t)for(var a in t)Object.prototype.hasOwnProperty.call(t,a)&&(e[a]=t[a]);return e.default=t,e}(n),o=t("../dygraph-interaction-model"),s=i(o),l=t("../iframe-tarp"),h=i(l),u=function(){this.hasTouchInterface_="undefined"!=typeof TouchEvent,this.isMobileDevice_=/mobile|android/gi.test(navigator.appVersion),this.interfaceCreated_=!1};u.prototype.toString=function(){return"RangeSelector Plugin"},u.prototype.activate=function(t){return this.dygraph_=t,this.getOption_("showRangeSelector")&&this.createInterface_(),{layout:this.reserveSpace_,predraw:this.renderStaticLayer_,didDrawChart:this.renderInteractiveLayer_}},u.prototype.destroy=function(){this.bgcanvas_=null,this.fgcanvas_=null,this.leftZoomHandle_=null,this.rightZoomHandle_=null},u.prototype.getOption_=function(t,e){return this.dygraph_.getOption(t,e)},u.prototype.setDefaultOption_=function(t,e){this.dygraph_.attrs_[t]=e},u.prototype.createInterface_=function(){this.createCanvases_(),this.createZoomHandles_(),this.initInteraction_(),this.getOption_("animatedZooms")&&(console.warn("Animated zooms and range selector are not compatible; disabling animatedZooms."),this.dygraph_.updateOptions({animatedZooms:!1},!0)),this.interfaceCreated_=!0,this.addToGraph_()},u.prototype.addToGraph_=function(){var t=this.graphDiv_=this.dygraph_.graphDiv;t.appendChild(this.bgcanvas_),t.appendChild(this.fgcanvas_),t.appendChild(this.leftZoomHandle_),t.appendChild(this.rightZoomHandle_)},u.prototype.removeFromGraph_=function(){var t=this.graphDiv_;t.removeChild(this.bgcanvas_),t.removeChild(this.fgcanvas_),t.removeChild(this.leftZoomHandle_),t.removeChild(this.rightZoomHandle_),this.graphDiv_=null},u.prototype.reserveSpace_=function(t){this.getOption_("showRangeSelector")&&t.reserveSpaceBottom(this.getOption_("rangeSelectorHeight")+4)},u.prototype.renderStaticLayer_=function(){this.updateVisibility_()&&(this.resize_(),this.drawStaticLayer_())},u.prototype.renderInteractiveLayer_=function(){this.updateVisibility_()&&!this.isChangingRange_&&(this.placeZoomHandles_(),this.drawInteractiveLayer_())},u.prototype.updateVisibility_=function(){var t=this.getOption_("showRangeSelector");if(t)this.interfaceCreated_?this.graphDiv_&&this.graphDiv_.parentNode||this.addToGraph_():this.createInterface_();else if(this.graphDiv_){this.removeFromGraph_();var e=this.dygraph_;setTimeout(function(){e.width_=0,e.resize()},1)}return t},u.prototype.resize_=function(){function t(t,e,a,i){var n=i||r.getContextPixelRatio(e);t.style.top=a.y+"px",t.style.left=a.x+"px",t.width=a.w*n,t.height=a.h*n,t.style.width=a.w+"px",t.style.height=a.h+"px",1!=n&&e.scale(n,n)}var e=this.dygraph_.layout_.getPlotArea(),a=0;this.dygraph_.getOptionForAxis("drawAxis","x")&&(a=this.getOption_("xAxisHeight")||this.getOption_("axisLabelFontSize")+2*this.getOption_("axisTickSize")),this.canvasRect_={x:e.x,y:e.y+e.h+a+4,w:e.w,h:this.getOption_("rangeSelectorHeight")};var i=this.dygraph_.getNumericOption("pixelRatio");t(this.bgcanvas_,this.bgcanvas_ctx_,this.canvasRect_,i),t(this.fgcanvas_,this.fgcanvas_ctx_,this.canvasRect_,i)},u.prototype.createCanvases_=function(){this.bgcanvas_=r.createCanvas(),this.bgcanvas_.className="dygraph-rangesel-bgcanvas",this.bgcanvas_.style.position="absolute",this.bgcanvas_.style.zIndex=9,this.bgcanvas_ctx_=r.getContext(this.bgcanvas_),this.fgcanvas_=r.createCanvas(),this.fgcanvas_.className="dygraph-rangesel-fgcanvas",this.fgcanvas_.style.position="absolute",this.fgcanvas_.style.zIndex=9,this.fgcanvas_.style.cursor="default",this.fgcanvas_ctx_=r.getContext(this.fgcanvas_)},u.prototype.createZoomHandles_=function(){var t=new Image;t.className="dygraph-rangesel-zoomhandle",t.style.position="absolute",t.style.zIndex=10,t.style.visibility="hidden",t.style.cursor="col-resize",t.width=9,t.height=16,t.src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAQCAYAAADESFVDAAAAAXNSR0IArs4c6QAAAAZiS0dEANAAzwDP4Z7KegAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAAd0SU1FB9sHGw0cMqdt1UwAAAAZdEVYdENvbW1lbnQAQ3JlYXRlZCB3aXRoIEdJTVBXgQ4XAAAAaElEQVQoz+3SsRFAQBCF4Z9WJM8KCDVwownl6YXsTmCUsyKGkZzcl7zkz3YLkypgAnreFmDEpHkIwVOMfpdi9CEEN2nGpFdwD03yEqDtOgCaun7sqSTDH32I1pQA2Pb9sZecAxc5r3IAb21d6878xsAAAAAASUVORK5CYII=",this.isMobileDevice_&&(t.width*=2,t.height*=2),this.leftZoomHandle_=t,this.rightZoomHandle_=t.cloneNode(!1)},u.prototype.initInteraction_=function(){var t,e,a,i,n,o,l,u,d,c,p,g,f,v,_=this,y=document,x=0,m=null,b=!1,w=!1,A=!this.isMobileDevice_,O=new h.default;t=function(t){var e=_.dygraph_.xAxisExtremes(),a=(e[1]-e[0])/_.canvasRect_.w;return[e[0]+(t.leftHandlePos-_.canvasRect_.x)*a,e[0]+(t.rightHandlePos-_.canvasRect_.x)*a]},e=function(t){return r.cancelEvent(t),b=!0,x=t.clientX,m=t.target?t.target:t.srcElement,"mousedown"!==t.type&&"dragstart"!==t.type||(r.addEvent(y,"mousemove",a),r.addEvent(y,"mouseup",i)),_.fgcanvas_.style.cursor="col-resize",O.cover(),!0},a=function(t){if(!b)return!1;r.cancelEvent(t);var e=t.clientX-x;if(Math.abs(e)<4)return!0;x=t.clientX;var a,i=_.getZoomHandleStatus_();m==_.leftZoomHandle_?(a=i.leftHandlePos+e,a=Math.min(a,i.rightHandlePos-m.width-3),a=Math.max(a,_.canvasRect_.x)):(a=i.rightHandlePos+e,a=Math.min(a,_.canvasRect_.x+_.canvasRect_.w),a=Math.max(a,i.leftHandlePos+m.width+3));var o=m.width/2;return m.style.left=a-o+"px",_.drawInteractiveLayer_(),A&&n(),!0},i=function(t){return!!b&&(b=!1,O.uncover(),r.removeEvent(y,"mousemove",a),r.removeEvent(y,"mouseup",i),_.fgcanvas_.style.cursor="default",A||n(),!0)},n=function(){try{var e=_.getZoomHandleStatus_();if(_.isChangingRange_=!0,e.isZoomed){var a=t(e);_.dygraph_.doZoomXDates_(a[0],a[1])}else _.dygraph_.resetZoom()}finally{_.isChangingRange_=!1}},o=function(t){var e=_.leftZoomHandle_.getBoundingClientRect(),a=e.left+e.width/2;e=_.rightZoomHandle_.getBoundingClientRect();var i=e.left+e.width/2;return t.clientX>a&&t.clientX<i},l=function(t){return!(w||!o(t)||!_.getZoomHandleStatus_().isZoomed)&&(r.cancelEvent(t),w=!0,x=t.clientX,"mousedown"===t.type&&(r.addEvent(y,"mousemove",u),r.addEvent(y,"mouseup",d)),!0)},u=function(t){if(!w)return!1;r.cancelEvent(t);var e=t.clientX-x;if(Math.abs(e)<4)return!0;x=t.clientX;var a=_.getZoomHandleStatus_(),i=a.leftHandlePos,n=a.rightHandlePos,o=n-i;i+e<=_.canvasRect_.x?(i=_.canvasRect_.x,n=i+o):n+e>=_.canvasRect_.x+_.canvasRect_.w?(n=_.canvasRect_.x+_.canvasRect_.w,i=n-o):(i+=e,n+=e);var s=_.leftZoomHandle_.width/2;return _.leftZoomHandle_.style.left=i-s+"px",_.rightZoomHandle_.style.left=n-s+"px",_.drawInteractiveLayer_(),A&&c(),!0},d=function(t){return!!w&&(w=!1,r.removeEvent(y,"mousemove",u),r.removeEvent(y,"mouseup",d),A||c(),!0)},c=function(){try{_.isChangingRange_=!0,_.dygraph_.dateWindow_=t(_.getZoomHandleStatus_()),_.dygraph_.drawGraph_(!1)}finally{_.isChangingRange_=!1}},p=function(t){if(!b&&!w){var e=o(t)?"move":"default";e!=_.fgcanvas_.style.cursor&&(_.fgcanvas_.style.cursor=e)}},g=function(t){"touchstart"==t.type&&1==t.targetTouches.length?e(t.targetTouches[0])&&r.cancelEvent(t):"touchmove"==t.type&&1==t.targetTouches.length?a(t.targetTouches[0])&&r.cancelEvent(t):i(t)},f=function(t){"touchstart"==t.type&&1==t.targetTouches.length?l(t.targetTouches[0])&&r.cancelEvent(t):"touchmove"==t.type&&1==t.targetTouches.length?u(t.targetTouches[0])&&r.cancelEvent(t):d(t)},v=function(t,e){for(var a=["touchstart","touchend","touchmove","touchcancel"],i=0;i<a.length;i++)_.dygraph_.addAndTrackEvent(t,a[i],e)},this.setDefaultOption_("interactionModel",s.default.dragIsPanInteractionModel),this.setDefaultOption_("panEdgeFraction",1e-4);var D=window.opera?"mousedown":"dragstart";this.dygraph_.addAndTrackEvent(this.leftZoomHandle_,D,e),this.dygraph_.addAndTrackEvent(this.rightZoomHandle_,D,e),this.dygraph_.addAndTrackEvent(this.fgcanvas_,"mousedown",l),this.dygraph_.addAndTrackEvent(this.fgcanvas_,"mousemove",p),this.hasTouchInterface_&&(v(this.leftZoomHandle_,g),v(this.rightZoomHandle_,g),v(this.fgcanvas_,f))},u.prototype.drawStaticLayer_=function(){var t=this.bgcanvas_ctx_;t.clearRect(0,0,this.canvasRect_.w,this.canvasRect_.h);try{this.drawMiniPlot_()}catch(t){console.warn(t)}this.bgcanvas_ctx_.lineWidth=this.getOption_("rangeSelectorBackgroundLineWidth"),t.strokeStyle=this.getOption_("rangeSelectorBackgroundStrokeColor"),t.beginPath(),t.moveTo(.5,.5),t.lineTo(.5,this.canvasRect_.h-.5),t.lineTo(this.canvasRect_.w-.5,this.canvasRect_.h-.5),t.lineTo(this.canvasRect_.w-.5,.5),t.stroke()},u.prototype.drawMiniPlot_=function(){var t=this.getOption_("rangeSelectorPlotFillColor"),e=this.getOption_("rangeSelectorPlotFillGradientColor"),a=this.getOption_("rangeSelectorPlotStrokeColor");if(t||a){var i=this.getOption_("stepPlot"),n=this.computeCombinedSeriesAndLimits_(),r=n.yMax-n.yMin,o=this.bgcanvas_ctx_,s=this.dygraph_.xAxisExtremes(),l=Math.max(s[1]-s[0],1e-30),h=(this.canvasRect_.w-.5)/l,u=(this.canvasRect_.h-.5)/r,d=this.canvasRect_.w-.5,c=this.canvasRect_.h-.5,p=null,g=null;o.beginPath(),o.moveTo(.5,c);for(var f=0;f<n.data.length;f++){var v=n.data[f],_=null!==v[0]?(v[0]-s[0])*h:NaN,y=null!==v[1]?c-(v[1]-n.yMin)*u:NaN;(i||null===p||Math.round(_)!=Math.round(p))&&(isFinite(_)&&isFinite(y)?(null===p?o.lineTo(_,c):i&&o.lineTo(_,g),o.lineTo(_,y),p=_,g=y):(null!==p&&(i?(o.lineTo(_,g),o.lineTo(_,c)):o.lineTo(p,c)),p=g=null))}if(o.lineTo(d,c),o.closePath(),t){var x=this.bgcanvas_ctx_.createLinearGradient(0,0,0,c);e&&x.addColorStop(0,e),x.addColorStop(1,t),this.bgcanvas_ctx_.fillStyle=x,o.fill()}a&&(this.bgcanvas_ctx_.strokeStyle=a,this.bgcanvas_ctx_.lineWidth=this.getOption_("rangeSelectorPlotLineWidth"),o.stroke())}},u.prototype.computeCombinedSeriesAndLimits_=function(){var t,e=this.dygraph_,a=this.getOption_("logscale"),i=e.numColumns(),n=e.getLabels(),o=new Array(i),s=!1,l=e.visibility(),h=[];for(t=1;t<i;t++){var u=this.getOption_("showInRangeSelector",n[t]);h.push(u),null!==u&&(s=!0)}if(s)for(t=1;t<i;t++)o[t]=h[t-1];else for(t=1;t<i;t++)o[t]=l[t-1];var d=[],c=e.dataHandler_,p=e.attributes_;for(t=1;t<e.numColumns();t++)if(o[t]){var g=c.extractSeries(e.rawData_,t,p);e.rollPeriod()>1&&(g=c.rollingAverage(g,e.rollPeriod(),p)),d.push(g)}var f=[];for(t=0;t<d[0].length;t++){for(var v=0,_=0,y=0;y<d.length;y++){var x=d[y][t][1];null===x||isNaN(x)||(_++,v+=x)}f.push([d[0][t][0],v/_])}var m=Number.MAX_VALUE,b=-Number.MAX_VALUE;for(t=0;t<f.length;t++){var w=f[t][1];null!==w&&isFinite(w)&&(!a||w>0)&&(m=Math.min(m,w),b=Math.max(b,w))}if(a)for(b=r.log10(b),b+=.25*b,m=r.log10(m),t=0;t<f.length;t++)f[t][1]=r.log10(f[t][1]);else{var A,O=b-m;A=O<=Number.MIN_VALUE?.25*b:.25*O,b+=A,m-=A}return{data:f,yMin:m,yMax:b}},u.prototype.placeZoomHandles_=function(){var t=this.dygraph_.xAxisExtremes(),e=this.dygraph_.xAxisRange(),a=t[1]-t[0],i=Math.max(0,(e[0]-t[0])/a),n=Math.max(0,(t[1]-e[1])/a),r=this.canvasRect_.x+this.canvasRect_.w*i,o=this.canvasRect_.x+this.canvasRect_.w*(1-n),s=Math.max(this.canvasRect_.y,this.canvasRect_.y+(this.canvasRect_.h-this.leftZoomHandle_.height)/2),l=this.leftZoomHandle_.width/2;this.leftZoomHandle_.style.left=r-l+"px",this.leftZoomHandle_.style.top=s+"px",this.rightZoomHandle_.style.left=o-l+"px",this.rightZoomHandle_.style.top=this.leftZoomHandle_.style.top,this.leftZoomHandle_.style.visibility="visible",this.rightZoomHandle_.style.visibility="visible"},u.prototype.drawInteractiveLayer_=function(){var t=this.fgcanvas_ctx_;t.clearRect(0,0,this.canvasRect_.w,this.canvasRect_.h);var e=this.canvasRect_.w-1,a=this.canvasRect_.h-1,i=this.getZoomHandleStatus_();if(t.strokeStyle=this.getOption_("rangeSelectorForegroundStrokeColor"),t.lineWidth=this.getOption_("rangeSelectorForegroundLineWidth"),i.isZoomed){var n=Math.max(1,i.leftHandlePos-this.canvasRect_.x),r=Math.min(e,i.rightHandlePos-this.canvasRect_.x);t.fillStyle="rgba(240, 240, 240, "+this.getOption_("rangeSelectorAlpha").toString()+")",t.fillRect(0,0,n,this.canvasRect_.h),t.fillRect(r,0,this.canvasRect_.w-r,this.canvasRect_.h),t.beginPath(),t.moveTo(1,1),t.lineTo(n,1),t.lineTo(n,a),t.lineTo(r,a),t.lineTo(r,1),t.lineTo(e,1),t.stroke()}else t.beginPath(),t.moveTo(1,1),t.lineTo(1,a),t.lineTo(e,a),t.lineTo(e,1),t.stroke()},u.prototype.getZoomHandleStatus_=function(){var t=this.leftZoomHandle_.width/2,e=parseFloat(this.leftZoomHandle_.style.left)+t,a=parseFloat(this.rightZoomHandle_.style.left)+t;return{leftHandlePos:e,rightHandlePos:a,isZoomed:e-1>this.canvasRect_.x||a+1<this.canvasRect_.x+this.canvasRect_.w}},a.default=u,e.exports=a.default},{"../dygraph-interaction-model":12,"../dygraph-utils":17,"../iframe-tarp":19}]},{},[18])(18)});
-//# sourceMappingURL=dist/dygraph.min.js.map
\ No newline at end of file
+//# sourceMappingURL=dist/dygraph.min.js.map
diff --git a/web/lib/dygraph-smooth-plotter-c91c859.js b/web/gui/lib/dygraph-smooth-plotter-c91c859.js
index 69685ec89..c0b76fb0a 100644
--- a/web/lib/dygraph-smooth-plotter-c91c859.js
+++ b/web/gui/lib/dygraph-smooth-plotter-c91c859.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 (function() {
 "use strict";
 
diff --git a/web/lib/fontawesome-all-5.0.1.min.js b/web/gui/lib/fontawesome-all-5.0.1.min.js
index 3dbd3be81..d2775aaf6 100644
--- a/web/lib/fontawesome-all-5.0.1.min.js
+++ b/web/gui/lib/fontawesome-all-5.0.1.min.js
@@ -1,5 +1,6 @@
 /*!
  * Font Awesome Free 5.0.1 by @fontawesome - http://fontawesome.com
  * License - http://fontawesome.com/license (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
+ * SPDX-License-Identifier: MIT
  */
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diff --git a/web/lib/gauge-1.3.2.min.js b/web/gui/lib/gauge-1.3.2.min.js
index be327fe58..7d9e1635b 100644
--- a/web/lib/gauge-1.3.2.min.js
+++ b/web/gui/lib/gauge-1.3.2.min.js
@@ -1 +1,2 @@
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c=(a-this.minValue)/(this.maxValue-this.minValue),this.getColorForPercentage(c,b)},b.prototype.renderStaticLabels=function(a,b,c,d){var e,f,g,h,i,j,k,l,n,o;for(this.ctx.save(),this.ctx.translate(b,c),e=a.font||"10px Times",j=/\d+\.?\d?/,i=e.match(j)[0],l=e.slice(i.length),f=parseFloat(i)*this.displayScale,this.ctx.font=f+l,this.ctx.fillStyle=a.color||"#000000",this.ctx.textBaseline="bottom",this.ctx.textAlign="center",k=a.labels,g=0,h=k.length;g<h;g++)o=k[g],(!this.options.limitMin||o>=this.minValue)&&(!this.options.limitMax||o<=this.maxValue)&&(n=this.getAngle(o)-3*Math.PI/2,this.ctx.rotate(n),this.ctx.fillText(m(o,a.fractionDigits),0,-d-this.lineWidth/2),this.ctx.rotate(-n));return this.ctx.restore()},b.prototype.render=function(){var a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;if(n=this.canvas.width/2,d=this.canvas.height*this.paddingTop+this.availableHeight-(this.radius+this.lineWidth/2)*this.extraPadding,a=this.getAngle(this.displayedValue),this.textField&&this.textField.render(this),this.ctx.lineCap="butt",k=this.radius*this.options.radiusScale,this.options.staticLabels&&this.renderStaticLabels(this.options.staticLabels,n,d,k),this.options.staticZones){for(this.ctx.save(),this.ctx.translate(n,d),this.ctx.lineWidth=this.lineWidth,l=this.options.staticZones,e=0,g=l.length;e<g;e++)o=l[e],j=o.min,this.options.limitMin&&j<this.minValue&&(j=this.minValue),i=o.max,this.options.limitMax&&i>this.maxValue&&(i=this.maxValue),this.ctx.strokeStyle=o.strokeStyle,this.ctx.beginPath(),this.ctx.arc(0,0,k,this.getAngle(j),this.getAngle(i),!1),this.ctx.stroke();this.ctx.restore()}else void 0!==this.options.customFillStyle?b=this.options.customFillStyle(this):null!==this.percentColors?b=this.getColorForValue(this.displayedValue,!0):void 0!==this.options.colorStop?(b=0===this.options.gradientType?this.ctx.createRadialGradient(n,d,9,n,d,70):this.ctx.createLinearGradient(0,0,n,0),b.addColorStop(0,this.options.colorStart),b.addColorStop(1,this.options.colorStop)):b=this.options.colorStart,this.ctx.strokeStyle=b,this.ctx.beginPath(),this.ctx.arc(n,d,k,(1+this.options.angle)*Math.PI,a,!1),this.ctx.lineWidth=this.lineWidth,this.ctx.stroke(),this.ctx.strokeStyle=this.options.strokeColor,this.ctx.beginPath(),this.ctx.arc(n,d,k,a,(2-this.options.angle)*Math.PI,!1),this.ctx.stroke();for(this.ctx.translate(n,d),m=this.gp,f=0,h=m.length;f<h;f++)c=m[f],c.update(!0);return this.ctx.translate(-n,-d)},b}(e),d=function(a){function b(a){this.canvas=a,b.__super__.constructor.call(this),"undefined"!=typeof G_vmlCanvasManager&&(this.canvas=window.G_vmlCanvasManager.initElement(this.canvas)),this.ctx=this.canvas.getContext("2d"),this.setOptions(),this.render()}return r(b,a),b.prototype.lineWidth=15,b.prototype.displayedValue=0,b.prototype.value=33,b.prototype.maxValue=80,b.prototype.minValue=0,b.prototype.options={lineWidth:.1,colorStart:"#6f6ea0",colorStop:"#c0c0db",strokeColor:"#eeeeee",shadowColor:"#d5d5d5",angle:.35,radiusScale:1},b.prototype.getAngle=function(a){return(1-this.options.angle)*Math.PI+(a-this.minValue)/(this.maxValue-this.minValue)*(2+this.options.angle-(1-this.options.angle))*Math.PI},b.prototype.setOptions=function(a){return null==a&&(a=null),b.__super__.setOptions.call(this,a),this.lineWidth=this.canvas.height*this.options.lineWidth,this.radius=this.options.radiusScale*(this.canvas.height/2-this.lineWidth/2),this},b.prototype.set=function(a){return this.value=a,this.value>this.maxValue&&(this.maxValue=1.1*this.value),AnimationUpdater.run()},b.prototype.render=function(){var a,b,c,d,e,f;return a=this.getAngle(this.displayedValue),f=this.canvas.width/2,c=this.canvas.height/2,this.textField&&this.textField.render(this),b=this.ctx.createRadialGradient(f,c,39,f,c,70),b.addColorStop(0,this.options.colorStart),b.addColorStop(1,this.options.colorStop),d=this.radius-this.lineWidth/2,e=this.radius+this.lineWidth/2,this.ctx.strokeStyle=this.options.strokeColor,this.ctx.beginPath(),this.ctx.arc(f,c,this.radius,(1-this.options.angle)*Math.PI,(2+this.options.angle)*Math.PI,!1),this.ctx.lineWidth=this.lineWidth,this.ctx.lineCap="round",this.ctx.stroke(),this.ctx.strokeStyle=b,this.ctx.beginPath(),this.ctx.arc(f,c,this.radius,(1-this.options.angle)*Math.PI,a,!1),this.ctx.stroke()},b}(e),f=function(a){function b(){return b.__super__.constructor.apply(this,arguments)}return r(b,a),b.prototype.strokeGradient=function(a,b,c,d){var e;return e=this.ctx.createRadialGradient(a,b,c,a,b,d),e.addColorStop(0,this.options.shadowColor),e.addColorStop(.12,this.options._orgStrokeColor),e.addColorStop(.88,this.options._orgStrokeColor),e.addColorStop(1,this.options.shadowColor),e},b.prototype.setOptions=function(a){var c,d,e,f;return null==a&&(a=null),b.__super__.setOptions.call(this,a),f=this.canvas.width/2,c=this.canvas.height/2,d=this.radius-this.lineWidth/2,e=this.radius+this.lineWidth/2,this.options._orgStrokeColor=this.options.strokeColor,this.options.strokeColor=this.strokeGradient(f,c,d,e),this},b}(d),window.AnimationUpdater={elements:[],animId:null,addAll:function(a){var b,c,d,e;for(e=[],c=0,d=a.length;c<d;c++)b=a[c],e.push(AnimationUpdater.elements.push(b));return e},add:function(a){return AnimationUpdater.elements.push(a)},run:function(a){var b,c,d,e,f;for(null==a&&(a=!1),b=!0,f=AnimationUpdater.elements,d=0,e=f.length;d<e;d++)c=f[d],c.update(a===!0)&&(b=!1);return b?cancelAnimationFrame(AnimationUpdater.animId):AnimationUpdater.animId=requestAnimationFrame(AnimationUpdater.run)}},"function"==typeof window.define&&null!=window.define.amd?define(function(){return{Gauge:g,Donut:f,BaseDonut:d,TextRenderer:i}}):"undefined"!=typeof module&&null!=module.exports?module.exports={Gauge:g,Donut:f,BaseDonut:d,TextRenderer:i}:(window.Gauge=g,window.Donut=f,window.BaseDonut=d,window.TextRenderer=i)}).call(this);
\ No newline at end of file
+// SPDX-License-Identifier: MIT
+(function(){var a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p=[].slice,q={}.hasOwnProperty,r=function(a,b){function d(){this.constructor=a}for(var c in b)q.call(b,c)&&(a[c]=b[c]);return d.prototype=b.prototype,a.prototype=new d,a.__super__=b.prototype,a};!function(){var a,b,c,d,e,f,g;for(g=["ms","moz","webkit","o"],c=0,e=g.length;c<e&&(f=g[c],!window.requestAnimationFrame);c++)window.requestAnimationFrame=window[f+"RequestAnimationFrame"],window.cancelAnimationFrame=window[f+"CancelAnimationFrame"]||window[f+"CancelRequestAnimationFrame"];return a=null,d=0,b={},requestAnimationFrame?window.cancelAnimationFrame?void 0:(a=window.requestAnimationFrame,window.requestAnimationFrame=function(c,e){var f;return f=++d,a(function(){if(!b[f])return c()},e),f},window.cancelAnimationFrame=function(a){return b[a]=!0}):(window.requestAnimationFrame=function(a,b){var c,d,e,f;return c=(new Date).getTime(),f=Math.max(0,16-(c-e)),d=window.setTimeout(function(){return 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a.prototype.animationSpeed=32,a.prototype.update=function(a){var b;return null==a&&(a=!1),!(!a&&this.displayedValue===this.value)&&(this.ctx&&this.clear&&this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),b=this.value-this.displayedValue,Math.abs(b/this.animationSpeed)<=.001?this.displayedValue=this.value:this.displayedValue=this.displayedValue+b/this.animationSpeed,this.render(),!0)},a}(),e=function(a){function b(){return b.__super__.constructor.apply(this,arguments)}return r(b,a),b.prototype.displayScale=1,b.prototype.setTextField=function(a,b){return this.textField=a instanceof i?a:new i(a,b)},b.prototype.setMinValue=function(a,b){var c,d,e,f,g;if(this.minValue=a,null==b&&(b=!0),b){for(this.displayedValue=this.minValue,f=this.gp||[],g=[],d=0,e=f.length;d<e;d++)c=f[d],g.push(c.displayedValue=this.minValue);return g}},b.prototype.setOptions=function(a){return null==a&&(a=null),this.options=n(this.options,a),this.textField&&(this.textField.el.style.fontSize=a.fontSize+"px"),this.options.angle>.5&&(this.options.angle=.5),this.configDisplayScale(),this},b.prototype.configDisplayScale=function(){var a,b,c,d,e;return d=this.displayScale,this.options.highDpiSupport===!1?delete this.displayScale:(b=window.devicePixelRatio||1,a=this.ctx.webkitBackingStorePixelRatio||this.ctx.mozBackingStorePixelRatio||this.ctx.msBackingStorePixelRatio||this.ctx.oBackingStorePixelRatio||this.ctx.backingStorePixelRatio||1,this.displayScale=b/a),this.displayScale!==d&&(e=this.canvas.G__width||this.canvas.width,c=this.canvas.G__height||this.canvas.height,this.canvas.width=e*this.displayScale,this.canvas.height=c*this.displayScale,this.canvas.style.width=e+"px",this.canvas.style.height=c+"px",this.canvas.G__width=e,this.canvas.G__height=c),this},b}(j),i=function(){function a(a,b){this.el=a,this.fractionDigits=b}return a.prototype.render=function(a){return this.el.innerHTML=m(a.displayedValue,this.fractionDigits)},a}(),a=function(a){function b(a,b){this.elem=a,this.text=null!=b&&b,this.value=1*this.elem.innerHTML,this.text&&(this.value=0)}return r(b,a),b.prototype.displayedValue=0,b.prototype.value=0,b.prototype.setVal=function(a){return this.value=1*a},b.prototype.render=function(){var a;return a=this.text?o(this.displayedValue.toFixed(0)):k(m(this.displayedValue)),this.elem.innerHTML=a},b}(j),b={create:function(b){var c,d,e,f;for(f=[],d=0,e=b.length;d<e;d++)c=b[d],f.push(new a(c));return f}},h=function(a){function b(a){this.gauge=a,this.ctx=this.gauge.ctx,this.canvas=this.gauge.canvas,b.__super__.constructor.call(this,!1,!1),this.setOptions()}return r(b,a),b.prototype.displayedValue=0,b.prototype.value=0,b.prototype.options={strokeWidth:.035,length:.1,color:"#000000"},b.prototype.setOptions=function(a){return null==a&&(a=null),this.options=n(this.options,a),this.length=2*this.gauge.radius*this.gauge.options.radiusScale*this.options.length,this.strokeWidth=this.canvas.height*this.options.strokeWidth,this.maxValue=this.gauge.maxValue,this.minValue=this.gauge.minValue,this.animationSpeed=this.gauge.animationSpeed,this.options.angle=this.gauge.options.angle},b.prototype.render=function(){var a,b,c,d,e,f,g;return a=this.gauge.getAngle.call(this,this.displayedValue),f=Math.round(this.length*Math.cos(a)),g=Math.round(this.length*Math.sin(a)),d=Math.round(this.strokeWidth*Math.cos(a-Math.PI/2)),e=Math.round(this.strokeWidth*Math.sin(a-Math.PI/2)),b=Math.round(this.strokeWidth*Math.cos(a+Math.PI/2)),c=Math.round(this.strokeWidth*Math.sin(a+Math.PI/2)),this.ctx.fillStyle=this.options.color,this.ctx.beginPath(),this.ctx.arc(0,0,this.strokeWidth,0,2*Math.PI,!0),this.ctx.fill(),this.ctx.beginPath(),this.ctx.moveTo(d,e),this.ctx.lineTo(f,g),this.ctx.lineTo(b,c),this.ctx.fill()},b}(j),c=function(){function a(a){this.elem=a}return a.prototype.updateValues=function(a){return this.value=a[0],this.maxValue=a[1],this.avgValue=a[2],this.render()},a.prototype.render=function(){var a,b;return this.textField&&this.textField.text(m(this.value)),0===this.maxValue&&(this.maxValue=2*this.avgValue),b=this.value/this.maxValue*100,a=this.avgValue/this.maxValue*100,$(".bar-value",this.elem).css({width:b+"%"}),$(".typical-value",this.elem).css({width:a+"%"})},a}(),g=function(a){function b(a){var c,d;this.canvas=a,b.__super__.constructor.call(this),this.percentColors=null,this.forceUpdate=!0,"undefined"!=typeof G_vmlCanvasManager&&(this.canvas=window.G_vmlCanvasManager.initElement(this.canvas)),this.ctx=this.canvas.getContext("2d"),c=this.canvas.clientHeight,d=this.canvas.clientWidth,this.canvas.height=c,this.canvas.width=d,this.gp=[new h(this)],this.setOptions(),this.render()}return r(b,a),b.prototype.elem=null,b.prototype.value=[20],b.prototype.maxValue=80,b.prototype.minValue=0,b.prototype.displayedAngle=0,b.prototype.displayedValue=0,b.prototype.lineWidth=40,b.prototype.paddingTop=.1,b.prototype.paddingBottom=.1,b.prototype.percentColors=null,b.prototype.options={colorStart:"#6fadcf",colorStop:void 0,gradientType:0,strokeColor:"#e0e0e0",pointer:{length:.8,strokeWidth:.035},angle:.15,lineWidth:.44,radiusScale:1,fontSize:40,limitMax:!1,limitMin:!1},b.prototype.setOptions=function(a){var c,d,e,f,g;for(null==a&&(a=null),b.__super__.setOptions.call(this,a),this.configPercentColors(),this.extraPadding=0,this.options.angle<0&&(f=Math.PI*(1+this.options.angle),this.extraPadding=Math.sin(f)),this.availableHeight=this.canvas.height*(1-this.paddingTop-this.paddingBottom),this.lineWidth=this.availableHeight*this.options.lineWidth,this.radius=(this.availableHeight-this.lineWidth/2)/(1+this.extraPadding),this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),g=this.gp,d=0,e=g.length;d<e;d++)c=g[d],c.setOptions(this.options.pointer),c.render();return this},b.prototype.configPercentColors=function(){var a,b,c,d,e,f,g;if(this.percentColors=null,void 0!==this.options.percentColors){for(this.percentColors=new Array,f=[],c=d=0,e=this.options.percentColors.length-1;0<=e?d<=e:d>=e;c=0<=e?++d:--d)g=parseInt(l(this.options.percentColors[c][1]).substring(0,2),16),b=parseInt(l(this.options.percentColors[c][1]).substring(2,4),16),a=parseInt(l(this.options.percentColors[c][1]).substring(4,6),16),f.push(this.percentColors[c]={pct:this.options.percentColors[c][0],color:{r:g,g:b,b:a}});return f}},b.prototype.set=function(a){var b,c,d,e,f,g,i;if(a instanceof Array||(a=[a]),a.length>this.gp.length)for(c=d=0,g=a.length-this.gp.length;0<=g?d<g:d>g;c=0<=g?++d:--d)b=new h(this),b.setOptions(this.options.pointer),this.gp.push(b);else a.length<this.gp.length&&(this.gp=this.gp.slice(this.gp.length-a.length));for(c=0,e=0,f=a.length;e<f;e++)i=a[e],i>this.maxValue?this.options.limitMax?i=this.maxValue:this.maxValue=i+1:i<this.minValue&&(this.options.limitMin?i=this.minValue:this.minValue=i-1),this.gp[c].value=i,this.gp[c++].setOptions({minValue:this.minValue,maxValue:this.maxValue,angle:this.options.angle});return this.value=Math.max(Math.min(a[a.length-1],this.maxValue),this.minValue),AnimationUpdater.run(this.forceUpdate),this.forceUpdate=!1},b.prototype.getAngle=function(a){return(1+this.options.angle)*Math.PI+(a-this.minValue)/(this.maxValue-this.minValue)*(1-2*this.options.angle)*Math.PI},b.prototype.getColorForPercentage=function(a,b){var c,d,e,f,g,h,i;if(0===a)c=this.percentColors[0].color;else for(c=this.percentColors[this.percentColors.length-1].color,e=f=0,h=this.percentColors.length-1;0<=h?f<=h:f>=h;e=0<=h?++f:--f)if(a<=this.percentColors[e].pct){b===!0?(i=this.percentColors[e-1]||this.percentColors[0],d=this.percentColors[e],g=(a-i.pct)/(d.pct-i.pct),c={r:Math.floor(i.color.r*(1-g)+d.color.r*g),g:Math.floor(i.color.g*(1-g)+d.color.g*g),b:Math.floor(i.color.b*(1-g)+d.color.b*g)}):c=this.percentColors[e].color;break}return"rgb("+[c.r,c.g,c.b].join(",")+")"},b.prototype.getColorForValue=function(a,b){var c;return c=(a-this.minValue)/(this.maxValue-this.minValue),this.getColorForPercentage(c,b)},b.prototype.renderStaticLabels=function(a,b,c,d){var e,f,g,h,i,j,k,l,n,o;for(this.ctx.save(),this.ctx.translate(b,c),e=a.font||"10px Times",j=/\d+\.?\d?/,i=e.match(j)[0],l=e.slice(i.length),f=parseFloat(i)*this.displayScale,this.ctx.font=f+l,this.ctx.fillStyle=a.color||"#000000",this.ctx.textBaseline="bottom",this.ctx.textAlign="center",k=a.labels,g=0,h=k.length;g<h;g++)o=k[g],(!this.options.limitMin||o>=this.minValue)&&(!this.options.limitMax||o<=this.maxValue)&&(n=this.getAngle(o)-3*Math.PI/2,this.ctx.rotate(n),this.ctx.fillText(m(o,a.fractionDigits),0,-d-this.lineWidth/2),this.ctx.rotate(-n));return this.ctx.restore()},b.prototype.render=function(){var a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;if(n=this.canvas.width/2,d=this.canvas.height*this.paddingTop+this.availableHeight-(this.radius+this.lineWidth/2)*this.extraPadding,a=this.getAngle(this.displayedValue),this.textField&&this.textField.render(this),this.ctx.lineCap="butt",k=this.radius*this.options.radiusScale,this.options.staticLabels&&this.renderStaticLabels(this.options.staticLabels,n,d,k),this.options.staticZones){for(this.ctx.save(),this.ctx.translate(n,d),this.ctx.lineWidth=this.lineWidth,l=this.options.staticZones,e=0,g=l.length;e<g;e++)o=l[e],j=o.min,this.options.limitMin&&j<this.minValue&&(j=this.minValue),i=o.max,this.options.limitMax&&i>this.maxValue&&(i=this.maxValue),this.ctx.strokeStyle=o.strokeStyle,this.ctx.beginPath(),this.ctx.arc(0,0,k,this.getAngle(j),this.getAngle(i),!1),this.ctx.stroke();this.ctx.restore()}else void 0!==this.options.customFillStyle?b=this.options.customFillStyle(this):null!==this.percentColors?b=this.getColorForValue(this.displayedValue,!0):void 0!==this.options.colorStop?(b=0===this.options.gradientType?this.ctx.createRadialGradient(n,d,9,n,d,70):this.ctx.createLinearGradient(0,0,n,0),b.addColorStop(0,this.options.colorStart),b.addColorStop(1,this.options.colorStop)):b=this.options.colorStart,this.ctx.strokeStyle=b,this.ctx.beginPath(),this.ctx.arc(n,d,k,(1+this.options.angle)*Math.PI,a,!1),this.ctx.lineWidth=this.lineWidth,this.ctx.stroke(),this.ctx.strokeStyle=this.options.strokeColor,this.ctx.beginPath(),this.ctx.arc(n,d,k,a,(2-this.options.angle)*Math.PI,!1),this.ctx.stroke();for(this.ctx.translate(n,d),m=this.gp,f=0,h=m.length;f<h;f++)c=m[f],c.update(!0);return this.ctx.translate(-n,-d)},b}(e),d=function(a){function b(a){this.canvas=a,b.__super__.constructor.call(this),"undefined"!=typeof G_vmlCanvasManager&&(this.canvas=window.G_vmlCanvasManager.initElement(this.canvas)),this.ctx=this.canvas.getContext("2d"),this.setOptions(),this.render()}return r(b,a),b.prototype.lineWidth=15,b.prototype.displayedValue=0,b.prototype.value=33,b.prototype.maxValue=80,b.prototype.minValue=0,b.prototype.options={lineWidth:.1,colorStart:"#6f6ea0",colorStop:"#c0c0db",strokeColor:"#eeeeee",shadowColor:"#d5d5d5",angle:.35,radiusScale:1},b.prototype.getAngle=function(a){return(1-this.options.angle)*Math.PI+(a-this.minValue)/(this.maxValue-this.minValue)*(2+this.options.angle-(1-this.options.angle))*Math.PI},b.prototype.setOptions=function(a){return null==a&&(a=null),b.__super__.setOptions.call(this,a),this.lineWidth=this.canvas.height*this.options.lineWidth,this.radius=this.options.radiusScale*(this.canvas.height/2-this.lineWidth/2),this},b.prototype.set=function(a){return this.value=a,this.value>this.maxValue&&(this.maxValue=1.1*this.value),AnimationUpdater.run()},b.prototype.render=function(){var a,b,c,d,e,f;return 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index 4024b6622..c641fdacd 100644
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diff --git a/web/lib/jquery.easypiechart-97b5824.min.js b/web/gui/lib/jquery.easypiechart-97b5824.min.js
index efa45d0f2..b6f6811de 100644
--- a/web/lib/jquery.easypiechart-97b5824.min.js
+++ b/web/gui/lib/jquery.easypiechart-97b5824.min.js
@@ -5,5 +5,6 @@
  * @license 
  * @author Robert Fleischmann <rendro87@gmail.com> (http://robert-fleischmann.de)
  * @version 2.1.7
+ * SPDX-License-Identifier: MIT
  **/
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index 3d0166ee8..a0a9169fd 100644
--- a/web/lib/jquery.peity-3.2.0.min.js
+++ b/web/gui/lib/jquery.peity-3.2.0.min.js
@@ -4,6 +4,7 @@
 // http://benpickles.github.io/peity
 //
 // Released under MIT license.
+// SPDX-License-Identifier: MIT
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diff --git a/web/lib/jquery.sparkline-2.1.2.min.js b/web/gui/lib/jquery.sparkline-2.1.2.min.js
index fa616bf96..f1973df04 100644
--- a/web/lib/jquery.sparkline-2.1.2.min.js
+++ b/web/gui/lib/jquery.sparkline-2.1.2.min.js
@@ -1,5 +1,6 @@
 /* jquery.sparkline 2.1.2 - http://omnipotent.net/jquery.sparkline/ 
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scroll.jqs",d.proxy(this.updateWindowDims,this)),this.updateWindowDims()},updateWindowDims:function(){this.scrollTop=d(window).scrollTop(),this.scrollLeft=d(window).scrollLeft(),this.scrollRight=this.scrollLeft+d(window).width(),this.updatePosition()},getSize:function(a){this.sizetip.html(a).appendTo(this.container),this.width=this.sizetip.width()+1,this.height=this.sizetip.height(),this.sizetip.remove()},setContent:function(a){if(!a){this.tooltip.css("visibility","hidden"),this.hidden=!0;return}this.getSize(a),this.tooltip.html(a).css({width:this.width,height:this.height,visibility:"visible"}),this.hidden&&(this.hidden=!1,this.updatePosition())},updatePosition:function(a,b){if(a===c){if(this.mousex===c)return;a=this.mousex-this.offsetLeft,b=this.mousey-this.offsetTop}else this.mousex=a-=this.offsetLeft,this.mousey=b-=this.offsetTop;if(!this.height||!this.width||this.hidden)return;b-=this.height+this.tooltipOffsetY,a+=this.tooltipOffsetX,b<this.scrollTop&&(b=this.scrollTop),a<this.scrollLeft?a=this.scrollLeft:a+this.width>this.scrollRight&&(a=this.scrollRight-this.width),this.tooltip.css({left:a,top:b})},remove:function(){this.tooltip.remove(),this.sizetip.remove(),this.sizetip=this.tooltip=c,d(window).unbind("resize.jqs scroll.jqs")}}),F=function(){q(E)},d(F),K=[],d.fn.sparkline=function(b,e){return this.each(function(){var f=new d.fn.sparkline.options(this,e),g=d(this),h,i;h=function(){var e,h,i,j,k,l,m;if(b==="html"||b===c){m=this.getAttribute(f.get("tagValuesAttribute"));if(m===c||m===null)m=g.html();e=m.replace(/(^\s*<!--)|(-->\s*$)|\s+/g,"").split(",")}else e=b;h=f.get("width")==="auto"?e.length*f.get("defaultPixelsPerValue"):f.get("width");if(f.get("height")==="auto"){if(!f.get("composite")||!d.data(this,"_jqs_vcanvas"))j=a.createElement("span"),j.innerHTML="a",g.html(j),i=d(j).innerHeight()||d(j).height(),d(j).remove(),j=null}else i=f.get("height");f.get("disableInteraction")?k=!1:(k=d.data(this,"_jqs_mhandler"),k?f.get("composite")||k.reset():(k=new u(this,f),d.data(this,"_jqs_mhandler",k)));if(f.get("composite")&&!d.data(this,"_jqs_vcanvas")){d.data(this,"_jqs_errnotify")||(alert("Attempted to attach a composite sparkline to an element with no existing sparkline"),d.data(this,"_jqs_errnotify",!0));return}l=new(d.fn.sparkline[f.get("type")])(this,e,f,h,i),l.render(),k&&k.registerSparkline(l)};if(d(this).html()&&!f.get("disableHiddenCheck")&&d(this).is(":hidden")||!d(this).parents("body").length){if(!f.get("composite")&&d.data(this,"_jqs_pending"))for(i=K.length;i;i--)K[i-1][0]==this&&K.splice(i-1,1);K.push([this,h]),d.data(this,"_jqs_pending",!0)}else h.call(this)})},d.fn.sparkline.defaults=f(),d.sparkline_display_visible=function(){var a,b,c,e=[];for(b=0,c=K.length;b<c;b++)a=K[b][0],d(a).is(":visible")&&!d(a).parents().is(":hidden")?(K[b][1].call(a),d.data(K[b][0],"_jqs_pending",!1),e.push(b)):!d(a).closest("html").length&&!d.data(a,"_jqs_pending")&&(d.data(K[b][0],"_jqs_pending",!1),e.push(b));for(b=e.length;b;b--)K.splice(e[b-1],1)},d.fn.sparkline.options=g({init:function(a,b){var c,f,g,h;this.userOptions=b=b||{},this.tag=a,this.tagValCache={},f=d.fn.sparkline.defaults,g=f.common,this.tagOptionsPrefix=b.enableTagOptions&&(b.tagOptionsPrefix||g.tagOptionsPrefix),h=this.getTagSetting("type"),h===e?c=f[b.type||g.type]:c=f[h],this.mergedOptions=d.extend({},g,c,b)},getTagSetting:function(a){var b=this.tagOptionsPrefix,d,f,g,h;if(b===!1||b===c)return e;if(this.tagValCache.hasOwnProperty(a))d=this.tagValCache.key;else{d=this.tag.getAttribute(b+a);if(d===c||d===null)d=e;else if(d.substr(0,1)==="["){d=d.substr(1,d.length-2).split(",");for(f=d.length;f--;)d[f]=k(d[f].replace(/(^\s*)|(\s*$)/g,""))}else if(d.substr(0,1)==="{"){g=d.substr(1,d.length-2).split(","),d={};for(f=g.length;f--;)h=g[f].split(":",2),d[h[0].replace(/(^\s*)|(\s*$)/g,"")]=k(h[1].replace(/(^\s*)|(\s*$)/g,""))}else d=k(d);this.tagValCache.key=d}return d},get:function(a,b){var d=this.getTagSetting(a),f;return d!==e?d:(f=this.mergedOptions[a])===c?b:f}}),d.fn.sparkline._base=g({disabled:!1,init:function(a,b,e,f,g){this.el=a,this.$el=d(a),this.values=b,this.options=e,this.width=f,this.height=g,this.currentRegion=c},initTarget:function(){var a=!this.options.get("disableInteraction");(this.target=this.$el.simpledraw(this.width,this.height,this.options.get("composite"),a))?(this.canvasWidth=this.target.pixelWidth,this.canvasHeight=this.target.pixelHeight):this.disabled=!0},render:function(){return this.disabled?(this.el.innerHTML="",!1):!0},getRegion:function(a,b){},setRegionHighlight:function(a,b,d){var e=this.currentRegion,f=!this.options.get("disableHighlight"),g;return b>this.canvasWidth||d>this.canvasHeight||b<0||d<0?null:(g=this.getRegion(a,b,d),e!==g?(e!==c&&f&&this.removeHighlight(),this.currentRegion=g,g!==c&&f&&this.renderHighlight(),!0):!1)},clearRegionHighlight:function(){return this.currentRegion!==c?(this.removeHighlight(),this.currentRegion=c,!0):!1},renderHighlight:function(){this.changeHighlight(!0)},removeHighlight:function(){this.changeHighlight(!1)},changeHighlight:function(a){},getCurrentRegionTooltip:function(){var a=this.options,b="",e=[],f,g,i,j,k,l,m,n,o,p,q,r,s,t;if(this.currentRegion===c)return"";f=this.getCurrentRegionFields(),q=a.get("tooltipFormatter");if(q)return q(this,a,f);a.get("tooltipChartTitle")&&(b+='<div class="jqs jqstitle">'+a.get("tooltipChartTitle")+"</div>\n"),g=this.options.get("tooltipFormat");if(!g)return"";d.isArray(g)||(g=[g]),d.isArray(f)||(f=[f]),m=this.options.get("tooltipFormatFieldlist"),n=this.options.get("tooltipFormatFieldlistKey");if(m&&n){o=[];for(l=f.length;l--;)p=f[l][n],(t=d.inArray(p,m))!=-1&&(o[t]=f[l]);f=o}i=g.length,s=f.length;for(l=0;l<i;l++){r=g[l],typeof r=="string"&&(r=new h(r)),j=r.fclass||"jqsfield";for(t=0;t<s;t++)if(!f[t].isNull||!a.get("tooltipSkipNull"))d.extend(f[t],{prefix:a.get("tooltipPrefix"),suffix:a.get("tooltipSuffix")}),k=r.render(f[t],a.get("tooltipValueLookups"),a),e.push('<div class="'+j+'">'+k+"</div>")}return e.length?b+e.join("\n"):""},getCurrentRegionFields:function(){},calcHighlightColor:function(a,c){var d=c.get("highlightColor"),e=c.get("highlightLighten"),f,g,h,j;if(d)return d;if(e){f=/^#([0-9a-f])([0-9a-f])([0-9a-f])$/i.exec(a)||/^#([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i.exec(a);if(f){h=[],g=a.length===4?16:1;for(j=0;j<3;j++)h[j]=i(b.round(parseInt(f[j+1],16)*g*e),0,255);return"rgb("+h.join(",")+")"}}return a}}),w={changeHighlight:function(a){var b=this.currentRegion,c=this.target,e=this.regionShapes[b],f;e&&(f=this.renderRegion(b,a),d.isArray(f)||d.isArray(e)?(c.replaceWithShapes(e,f),this.regionShapes[b]=d.map(f,function(a){return a.id})):(c.replaceWithShape(e,f),this.regionShapes[b]=f.id))},render:function(){var a=this.values,b=this.target,c=this.regionShapes,e,f,g,h;if(!this.cls._super.render.call(this))return;for(g=a.length;g--;){e=this.renderRegion(g);if(e)if(d.isArray(e)){f=[];for(h=e.length;h--;)e[h].append(),f.push(e[h].id);c[g]=f}else e.append(),c[g]=e.id;else c[g]=null}b.render()}},d.fn.sparkline.line=x=g(d.fn.sparkline._base,{type:"line",init:function(a,b,c,d,e){x._super.init.call(this,a,b,c,d,e),this.vertices=[],this.regionMap=[],this.xvalues=[],this.yvalues=[],this.yminmax=[],this.hightlightSpotId=null,this.lastShapeId=null,this.initTarget()},getRegion:function(a,b,d){var e,f=this.regionMap;for(e=f.length;e--;)if(f[e]!==null&&b>=f[e][0]&&b<=f[e][1])return f[e][2];return c},getCurrentRegionFields:function(){var a=this.currentRegion;return{isNull:this.yvalues[a]===null,x:this.xvalues[a],y:this.yvalues[a],color:this.options.get("lineColor"),fillColor:this.options.get("fillColor"),offset:a}},renderHighlight:function(){var a=this.currentRegion,b=this.target,d=this.vertices[a],e=this.options,f=e.get("spotRadius"),g=e.get("highlightSpotColor"),h=e.get("highlightLineColor"),i,j;if(!d)return;f&&g&&(i=b.drawCircle(d[0],d[1],f,c,g),this.highlightSpotId=i.id,b.insertAfterShape(this.lastShapeId,i)),h&&(j=b.drawLine(d[0],this.canvasTop,d[0],this.canvasTop+this.canvasHeight,h),this.highlightLineId=j.id,b.insertAfterShape(this.lastShapeId,j))},removeHighlight:function(){var a=this.target;this.highlightSpotId&&(a.removeShapeId(this.highlightSpotId),this.highlightSpotId=null),this.highlightLineId&&(a.removeShapeId(this.highlightLineId),this.highlightLineId=null)},scanValues:function(){var a=this.values,c=a.length,d=this.xvalues,e=this.yvalues,f=this.yminmax,g,h,i,j,k;for(g=0;g<c;g++)h=a[g],i=typeof a[g]=="string",j=typeof a[g]=="object"&&a[g]instanceof Array,k=i&&a[g].split(":"),i&&k.length===2?(d.push(Number(k[0])),e.push(Number(k[1])),f.push(Number(k[1]))):j?(d.push(h[0]),e.push(h[1]),f.push(h[1])):(d.push(g),a[g]===null||a[g]==="null"?e.push(null):(e.push(Number(h)),f.push(Number(h))));this.options.get("xvalues")&&(d=this.options.get("xvalues")),this.maxy=this.maxyorg=b.max.apply(b,f),this.miny=this.minyorg=b.min.apply(b,f),this.maxx=b.max.apply(b,d),this.minx=b.min.apply(b,d),this.xvalues=d,this.yvalues=e,this.yminmax=f},processRangeOptions:function(){var a=this.options,b=a.get("normalRangeMin"),d=a.get("normalRangeMax");b!==c&&(b<this.miny&&(this.miny=b),d>this.maxy&&(this.maxy=d)),a.get("chartRangeMin")!==c&&(a.get("chartRangeClip")||a.get("chartRangeMin")<this.miny)&&(this.miny=a.get("chartRangeMin")),a.get("chartRangeMax")!==c&&(a.get("chartRangeClip")||a.get("chartRangeMax")>this.maxy)&&(this.maxy=a.get("chartRangeMax")),a.get("chartRangeMinX")!==c&&(a.get("chartRangeClipX")||a.get("chartRangeMinX")<this.minx)&&(this.minx=a.get("chartRangeMinX")),a.get("chartRangeMaxX")!==c&&(a.get("chartRangeClipX")||a.get("chartRangeMaxX")>this.maxx)&&(this.maxx=a.get("chartRangeMaxX"))},drawNormalRange:function(a,d,e,f,g){var h=this.options.get("normalRangeMin"),i=this.options.get("normalRangeMax"),j=d+b.round(e-e*((i-this.miny)/g)),k=b.round(e*(i-h)/g);this.target.drawRect(a,j,f,k,c,this.options.get("normalRangeColor")).append()},render:function(){var a=this.options,e=this.target,f=this.canvasWidth,g=this.canvasHeight,h=this.vertices,i=a.get("spotRadius"),j=this.regionMap,k,l,m,n,o,p,q,r,s,u,v,w,y,z,A,B,C,D,E,F,G,H,I,J,K;if(!x._super.render.call(this))return;this.scanValues(),this.processRangeOptions(),I=this.xvalues,J=this.yvalues;if(!this.yminmax.length||this.yvalues.length<2)return;n=o=0,k=this.maxx-this.minx===0?1:this.maxx-this.minx,l=this.maxy-this.miny===0?1:this.maxy-this.miny,m=this.yvalues.length-1,i&&(f<i*4||g<i*4)&&(i=0);if(i){G=a.get("highlightSpotColor")&&!a.get("disableInteraction");if(G||a.get("minSpotColor")||a.get("spotColor")&&J[m]===this.miny)g-=b.ceil(i);if(G||a.get("maxSpotColor")||a.get("spotColor")&&J[m]===this.maxy)g-=b.ceil(i),n+=b.ceil(i);if(G||(a.get("minSpotColor")||a.get("maxSpotColor"))&&(J[0]===this.miny||J[0]===this.maxy))o+=b.ceil(i),f-=b.ceil(i);if(G||a.get("spotColor")||a.get("minSpotColor")||a.get("maxSpotColor")&&(J[m]===this.miny||J[m]===this.maxy))f-=b.ceil(i)}g--,a.get("normalRangeMin")!==c&&!a.get("drawNormalOnTop")&&this.drawNormalRange(o,n,g,f,l),q=[],r=[q],z=A=null,B=J.length;for(K=0;K<B;K++)s=I[K],v=I[K+1],u=J[K],w=o+b.round((s-this.minx)*(f/k)),y=K<B-1?o+b.round((v-this.minx)*(f/k)):f,A=w+(y-w)/2,j[K]=[z||0,A,K],z=A,u===null?K&&(J[K-1]!==null&&(q=[],r.push(q)),h.push(null)):(u<this.miny&&(u=this.miny),u>this.maxy&&(u=this.maxy),q.length||q.push([w,n+g]),p=[w,n+b.round(g-g*((u-this.miny)/l))],q.push(p),h.push(p));C=[],D=[],E=r.length;for(K=0;K<E;K++)q=r[K],q.length&&(a.get("fillColor")&&(q.push([q[q.length-1][0],n+g]),D.push(q.slice(0)),q.pop()),q.length>2&&(q[0]=[q[0][0],q[1][1]]),C.push(q));E=D.length;for(K=0;K<E;K++)e.drawShape(D[K],a.get("fillColor"),a.get("fillColor")).append();a.get("normalRangeMin")!==c&&a.get("drawNormalOnTop")&&this.drawNormalRange(o,n,g,f,l),E=C.length;for(K=0;K<E;K++)e.drawShape(C[K],a.get("lineColor"),c,a.get("lineWidth")).append();if(i&&a.get("valueSpots")){F=a.get("valueSpots"),F.get===c&&(F=new t(F));for(K=0;K<B;K++)H=F.get(J[K]),H&&e.drawCircle(o+b.round((I[K]-this.minx)*(f/k)),n+b.round(g-g*((J[K]-this.miny)/l)),i,c,H).append()}i&&a.get("spotColor")&&J[m]!==null&&e.drawCircle(o+b.round((I[I.length-1]-this.minx)*(f/k)),n+b.round(g-g*((J[m]-this.miny)/l)),i,c,a.get("spotColor")).append(),this.maxy!==this.minyorg&&(i&&a.get("minSpotColor")&&(s=I[d.inArray(this.minyorg,J)],e.drawCircle(o+b.round((s-this.minx)*(f/k)),n+b.round(g-g*((this.minyorg-this.miny)/l)),i,c,a.get("minSpotColor")).append()),i&&a.get("maxSpotColor")&&(s=I[d.inArray(this.maxyorg,J)],e.drawCircle(o+b.round((s-this.minx)*(f/k)),n+b.round(g-g*((this.maxyorg-this.miny)/l)),i,c,a.get("maxSpotColor")).append())),this.lastShapeId=e.getLastShapeId(),this.canvasTop=n,e.render()}}),d.fn.sparkline.bar=y=g(d.fn.sparkline._base,w,{type:"bar",init:function(a,e,f,g,h){var j=parseInt(f.get("barWidth"),10),n=parseInt(f.get("barSpacing"),10),o=f.get("chartRangeMin"),p=f.get("chartRangeMax"),q=f.get("chartRangeClip"),r=Infinity,s=-Infinity,u,v,w,x,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R;y._super.init.call(this,a,e,f,g,h);for(A=0,B=e.length;A<B;A++){O=e[A],u=typeof O=="string"&&O.indexOf(":")>-1;if(u||d.isArray(O))J=!0,u&&(O=e[A]=l(O.split(":"))),O=m(O,null),v=b.min.apply(b,O),w=b.max.apply(b,O),v<r&&(r=v),w>s&&(s=w)}this.stacked=J,this.regionShapes={},this.barWidth=j,this.barSpacing=n,this.totalBarWidth=j+n,this.width=g=e.length*j+(e.length-1)*n,this.initTarget(),q&&(H=o===c?-Infinity:o,I=p===c?Infinity:p),z=[],x=J?[]:z;var S=[],T=[];for(A=0,B=e.length;A<B;A++)if(J){K=e[A],e[A]=N=[],S[A]=0,x[A]=T[A]=0;for(L=0,M=K.length;L<M;L++)O=N[L]=q?i(K[L],H,I):K[L],O!==null&&(O>0&&(S[A]+=O),r<0&&s>0?O<0?T[A]+=b.abs(O):x[A]+=O:x[A]+=b.abs(O-(O<0?s:r)),z.push(O))}else O=q?i(e[A],H,I):e[A],O=e[A]=k(O),O!==null&&z.push(O);this.max=G=b.max.apply(b,z),this.min=F=b.min.apply(b,z),this.stackMax=s=J?b.max.apply(b,S):G,this.stackMin=r=J?b.min.apply(b,z):F,f.get("chartRangeMin")!==c&&(f.get("chartRangeClip")||f.get("chartRangeMin")<F)&&(F=f.get("chartRangeMin")),f.get("chartRangeMax")!==c&&(f.get("chartRangeClip")||f.get("chartRangeMax")>G)&&(G=f.get("chartRangeMax")),this.zeroAxis=D=f.get("zeroAxis",!0),F<=0&&G>=0&&D?E=0:D==0?E=F:F>0?E=F:E=G,this.xaxisOffset=E,C=J?b.max.apply(b,x)+b.max.apply(b,T):G-F,this.canvasHeightEf=D&&F<0?this.canvasHeight-2:this.canvasHeight-1,F<E?(Q=J&&G>=0?s:G,P=(Q-E)/C*this.canvasHeight,P!==b.ceil(P)&&(this.canvasHeightEf-=2,P=b.ceil(P))):P=this.canvasHeight,this.yoffset=P,d.isArray(f.get("colorMap"))?(this.colorMapByIndex=f.get("colorMap"),this.colorMapByValue=null):(this.colorMapByIndex=null,this.colorMapByValue=f.get("colorMap"),this.colorMapByValue&&this.colorMapByValue.get===c&&(this.colorMapByValue=new t(this.colorMapByValue))),this.range=C},getRegion:function(a,d,e){var f=b.floor(d/this.totalBarWidth);return f<0||f>=this.values.length?c:f},getCurrentRegionFields:function(){var a=this.currentRegion,b=r(this.values[a]),c=[],d,e;for(e=b.length;e--;)d=b[e],c.push({isNull:d===null,value:d,color:this.calcColor(e,d,a),offset:a});return c},calcColor:function(a,b,e){var f=this.colorMapByIndex,g=this.colorMapByValue,h=this.options,i,j;return this.stacked?i=h.get("stackedBarColor"):i=b<0?h.get("negBarColor"):h.get("barColor"),b===0&&h.get("zeroColor")!==c&&(i=h.get("zeroColor")),g&&(j=g.get(b))?i=j:f&&f.length>e&&(i=f[e]),d.isArray(i)?i[a%i.length]:i},renderRegion:function(a,e){var f=this.values[a],g=this.options,h=this.xaxisOffset,i=[],j=this.range,k=this.stacked,l=this.target,m=a*this.totalBarWidth,n=this.canvasHeightEf,p=this.yoffset,q,r,s,t,u,v,w,x,y,z;f=d.isArray(f)?f:[f],w=f.length,x=f[0],t=o(null,f),z=o(h,f,!0);if(t)return g.get("nullColor")?(s=e?g.get("nullColor"):this.calcHighlightColor(g.get("nullColor"),g),q=p>0?p-1:p,l.drawRect(m,q,this.barWidth-1,0,s,s)):c;u=p;for(v=0;v<w;v++){x=f[v];if(k&&x===h){if(!z||y)continue;y=!0}j>0?r=b.floor(n*(b.abs(x-h)/j))+1:r=1,x<h||x===h&&p===0?(q=u,u+=r):(q=p-r,p-=r),s=this.calcColor(v,x,a),e&&(s=this.calcHighlightColor(s,g)),i.push(l.drawRect(m,q,this.barWidth-1,r-1,s,s))}return i.length===1?i[0]:i}}),d.fn.sparkline.tristate=z=g(d.fn.sparkline._base,w,{type:"tristate",init:function(a,b,e,f,g){var h=parseInt(e.get("barWidth"),10),i=parseInt(e.get("barSpacing"),10);z._super.init.call(this,a,b,e,f,g),this.regionShapes={},this.barWidth=h,this.barSpacing=i,this.totalBarWidth=h+i,this.values=d.map(b,Number),this.width=f=b.length*h+(b.length-1)*i,d.isArray(e.get("colorMap"))?(this.colorMapByIndex=e.get("colorMap"),this.colorMapByValue=null):(this.colorMapByIndex=null,this.colorMapByValue=e.get("colorMap"),this.colorMapByValue&&this.colorMapByValue.get===c&&(this.colorMapByValue=new t(this.colorMapByValue))),this.initTarget()},getRegion:function(a,c,d){return b.floor(c/this.totalBarWidth)},getCurrentRegionFields:function(){var a=this.currentRegion;return{isNull:this.values[a]===c,value:this.values[a],color:this.calcColor(this.values[a],a),offset:a}},calcColor:function(a,b){var c=this.values,d=this.options,e=this.colorMapByIndex,f=this.colorMapByValue,g,h;return f&&(h=f.get(a))?g=h:e&&e.length>b?g=e[b]:c[b]<0?g=d.get("negBarColor"):c[b]>0?g=d.get("posBarColor"):g=d.get("zeroBarColor"),g},renderRegion:function(a,c){var d=this.values,e=this.options,f=this.target,g,h,i,j,k,l;g=f.pixelHeight,i=b.round(g/2),j=a*this.totalBarWidth,d[a]<0?(k=i,h=i-1):d[a]>0?(k=0,h=i-1):(k=i-1,h=2),l=this.calcColor(d[a],a);if(l===null)return;return c&&(l=this.calcHighlightColor(l,e)),f.drawRect(j,k,this.barWidth-1,h-1,l,l)}}),d.fn.sparkline.discrete=A=g(d.fn.sparkline._base,w,{type:"discrete",init:function(a,e,f,g,h){A._super.init.call(this,a,e,f,g,h),this.regionShapes={},this.values=e=d.map(e,Number),this.min=b.min.apply(b,e),this.max=b.max.apply(b,e),this.range=this.max-this.min,this.width=g=f.get("width")==="auto"?e.length*2:this.width,this.interval=b.floor(g/e.length),this.itemWidth=g/e.length,f.get("chartRangeMin")!==c&&(f.get("chartRangeClip")||f.get("chartRangeMin")<this.min)&&(this.min=f.get("chartRangeMin")),f.get("chartRangeMax")!==c&&(f.get("chartRangeClip")||f.get("chartRangeMax")>this.max)&&(this.max=f.get("chartRangeMax")),this.initTarget(),this.target&&(this.lineHeight=f.get("lineHeight")==="auto"?b.round(this.canvasHeight*.3):f.get("lineHeight"))},getRegion:function(a,c,d){return b.floor(c/this.itemWidth)},getCurrentRegionFields:function(){var a=this.currentRegion;return{isNull:this.values[a]===c,value:this.values[a],offset:a}},renderRegion:function(a,c){var d=this.values,e=this.options,f=this.min,g=this.max,h=this.range,j=this.interval,k=this.target,l=this.canvasHeight,m=this.lineHeight,n=l-m,o,p,q,r;return p=i(d[a],f,g),r=a*j,o=b.round(n-n*((p-f)/h)),q=e.get("thresholdColor")&&p<e.get("thresholdValue")?e.get("thresholdColor"):e.get("lineColor"),c&&(q=this.calcHighlightColor(q,e)),k.drawLine(r,o,r,o+m,q)}}),d.fn.sparkline.bullet=B=g(d.fn.sparkline._base,{type:"bullet",init:function(a,d,e,f,g){var h,i,j;B._super.init.call(this,a,d,e,f,g),this.values=d=l(d),j=d.slice(),j[0]=j[0]===null?j[2]:j[0],j[1]=d[1]===null?j[2]:j[1],h=b.min.apply(b,d),i=b.max.apply(b,d),e.get("base")===c?h=h<0?h:0:h=e.get("base"),this.min=h,this.max=i,this.range=i-h,this.shapes={},this.valueShapes={},this.regiondata={},this.width=f=e.get("width")==="auto"?"4.0em":f,this.target=this.$el.simpledraw(f,g,e.get("composite")),d.length||(this.disabled=!0),this.initTarget()},getRegion:function(a,b,d){var e=this.target.getShapeAt(a,b,d);return e!==c&&this.shapes[e]!==c?this.shapes[e]:c},getCurrentRegionFields:function(){var a=this.currentRegion;return{fieldkey:a.substr(0,1),value:this.values[a.substr(1)],region:a}},changeHighlight:function(a){var b=this.currentRegion,c=this.valueShapes[b],d;delete this.shapes[c];switch(b.substr(0,1)){case"r":d=this.renderRange(b.substr(1),a);break;case"p":d=this.renderPerformance(a);break;case"t":d=this.renderTarget(a)}this.valueShapes[b]=d.id,this.shapes[d.id]=b,this.target.replaceWithShape(c,d)},renderRange:function(a,c){var d=this.values[a],e=b.round(this.canvasWidth*((d-this.min)/this.range)),f=this.options.get("rangeColors")[a-2];return c&&(f=this.calcHighlightColor(f,this.options)),this.target.drawRect(0,0,e-1,this.canvasHeight-1,f,f)},renderPerformance:function(a){var c=this.values[1],d=b.round(this.canvasWidth*((c-this.min)/this.range)),e=this.options.get("performanceColor");return a&&(e=this.calcHighlightColor(e,this.options)),this.target.drawRect(0,b.round(this.canvasHeight*.3),d-1,b.round(this.canvasHeight*.4)-1,e,e)},renderTarget:function(a){var c=this.values[0],d=b.round(this.canvasWidth*((c-this.min)/this.range)-this.options.get("targetWidth")/2),e=b.round(this.canvasHeight*.1),f=this.canvasHeight-e*2,g=this.options.get("targetColor");return a&&(g=this.calcHighlightColor(g,this.options)),this.target.drawRect(d,e,this.options.get("targetWidth")-1,f-1,g,g)},render:function(){var a=this.values.length,b=this.target,c,d;if(!B._super.render.call(this))return;for(c=2;c<a;c++)d=this.renderRange(c).append(),this.shapes[d.id]="r"+c,this.valueShapes["r"+c]=d.id;this.values[1]!==null&&(d=this.renderPerformance().append(),this.shapes[d.id]="p1",this.valueShapes.p1=d.id),this.values[0]!==null&&(d=this.renderTarget().append(),this.shapes[d.id]="t0",this.valueShapes.t0=d.id),b.render()}}),d.fn.sparkline.pie=C=g(d.fn.sparkline._base,{type:"pie",init:function(a,c,e,f,g){var h=0,i;C._super.init.call(this,a,c,e,f,g),this.shapes={},this.valueShapes={},this.values=c=d.map(c,Number),e.get("width")==="auto"&&(this.width=this.height);if(c.length>0)for(i=c.length;i--;)h+=c[i];this.total=h,this.initTarget(),this.radius=b.floor(b.min(this.canvasWidth,this.canvasHeight)/2)},getRegion:function(a,b,d){var e=this.target.getShapeAt(a,b,d);return e!==c&&this.shapes[e]!==c?this.shapes[e]:c},getCurrentRegionFields:function(){var a=this.currentRegion;return{isNull:this.values[a]===c,value:this.values[a],percent:this.values[a]/this.total*100,color:this.options.get("sliceColors")[a%this.options.get("sliceColors").length],offset:a}},changeHighlight:function(a){var b=this.currentRegion,c=this.renderSlice(b,a),d=this.valueShapes[b];delete this.shapes[d],this.target.replaceWithShape(d,c),this.valueShapes[b]=c.id,this.shapes[c.id]=b},renderSlice:function(a,d){var e=this.target,f=this.options,g=this.radius,h=f.get("borderWidth"),i=f.get("offset"),j=2*b.PI,k=this.values,l=this.total,m=i?2*b.PI*(i/360):0,n,o,p,q,r;q=k.length;for(p=0;p<q;p++){n=m,o=m,l>0&&(o=m+j*(k[p]/l));if(a===p)return r=f.get("sliceColors")[p%f.get("sliceColors").length],d&&(r=this.calcHighlightColor(r,f)),e.drawPieSlice(g,g,g-h,n,o,c,r);m=o}},render:function(){var a=this.target,d=this.values,e=this.options,f=this.radius,g=e.get("borderWidth"),h,i;if(!C._super.render.call(this))return;g&&a.drawCircle(f,f,b.floor(f-g/2),e.get("borderColor"),c,g).append();for(i=d.length;i--;)d[i]&&(h=this.renderSlice(i).append(),this.valueShapes[i]=h.id,this.shapes[h.id]=i);a.render()}}),d.fn.sparkline.box=D=g(d.fn.sparkline._base,{type:"box",init:function(a,b,c,e,f){D._super.init.call(this,a,b,c,e,f),this.values=d.map(b,Number),this.width=c.get("width")==="auto"?"4.0em":e,this.initTarget(),this.values.length||(this.disabled=1)},getRegion:function(){return 1},getCurrentRegionFields:function(){var a=[{field:"lq",value:this.quartiles[0]},{field:"med",value:this.quartiles
-[1]},{field:"uq",value:this.quartiles[2]}];return this.loutlier!==c&&a.push({field:"lo",value:this.loutlier}),this.routlier!==c&&a.push({field:"ro",value:this.routlier}),this.lwhisker!==c&&a.push({field:"lw",value:this.lwhisker}),this.rwhisker!==c&&a.push({field:"rw",value:this.rwhisker}),a},render:function(){var a=this.target,d=this.values,e=d.length,f=this.options,g=this.canvasWidth,h=this.canvasHeight,i=f.get("chartRangeMin")===c?b.min.apply(b,d):f.get("chartRangeMin"),k=f.get("chartRangeMax")===c?b.max.apply(b,d):f.get("chartRangeMax"),l=0,m,n,o,p,q,r,s,t,u,v,w;if(!D._super.render.call(this))return;if(f.get("raw"))f.get("showOutliers")&&d.length>5?(n=d[0],m=d[1],p=d[2],q=d[3],r=d[4],s=d[5],t=d[6]):(m=d[0],p=d[1],q=d[2],r=d[3],s=d[4]);else{d.sort(function(a,b){return a-b}),p=j(d,1),q=j(d,2),r=j(d,3),o=r-p;if(f.get("showOutliers")){m=s=c;for(u=0;u<e;u++)m===c&&d[u]>p-o*f.get("outlierIQR")&&(m=d[u]),d[u]<r+o*f.get("outlierIQR")&&(s=d[u]);n=d[0],t=d[e-1]}else m=d[0],s=d[e-1]}this.quartiles=[p,q,r],this.lwhisker=m,this.rwhisker=s,this.loutlier=n,this.routlier=t,w=g/(k-i+1),f.get("showOutliers")&&(l=b.ceil(f.get("spotRadius")),g-=2*b.ceil(f.get("spotRadius")),w=g/(k-i+1),n<m&&a.drawCircle((n-i)*w+l,h/2,f.get("spotRadius"),f.get("outlierLineColor"),f.get("outlierFillColor")).append(),t>s&&a.drawCircle((t-i)*w+l,h/2,f.get("spotRadius"),f.get("outlierLineColor"),f.get("outlierFillColor")).append()),a.drawRect(b.round((p-i)*w+l),b.round(h*.1),b.round((r-p)*w),b.round(h*.8),f.get("boxLineColor"),f.get("boxFillColor")).append(),a.drawLine(b.round((m-i)*w+l),b.round(h/2),b.round((p-i)*w+l),b.round(h/2),f.get("lineColor")).append(),a.drawLine(b.round((m-i)*w+l),b.round(h/4),b.round((m-i)*w+l),b.round(h-h/4),f.get("whiskerColor")).append(),a.drawLine(b.round((s-i)*w+l),b.round(h/2),b.round((r-i)*w+l),b.round(h/2),f.get("lineColor")).append(),a.drawLine(b.round((s-i)*w+l),b.round(h/4),b.round((s-i)*w+l),b.round(h-h/4),f.get("whiskerColor")).append(),a.drawLine(b.round((q-i)*w+l),b.round(h*.1),b.round((q-i)*w+l),b.round(h*.9),f.get("medianColor")).append(),f.get("target")&&(v=b.ceil(f.get("spotRadius")),a.drawLine(b.round((f.get("target")-i)*w+l),b.round(h/2-v),b.round((f.get("target")-i)*w+l),b.round(h/2+v),f.get("targetColor")).append(),a.drawLine(b.round((f.get("target")-i)*w+l-v),b.round(h/2),b.round((f.get("target")-i)*w+l+v),b.round(h/2),f.get("targetColor")).append()),a.render()}}),G=g({init:function(a,b,c,d){this.target=a,this.id=b,this.type=c,this.args=d},append:function(){return this.target.appendShape(this),this}}),H=g({_pxregex:/(\d+)(px)?\s*$/i,init:function(a,b,c){if(!a)return;this.width=a,this.height=b,this.target=c,this.lastShapeId=null,c[0]&&(c=c[0]),d.data(c,"_jqs_vcanvas",this)},drawLine:function(a,b,c,d,e,f){return this.drawShape([[a,b],[c,d]],e,f)},drawShape:function(a,b,c,d){return this._genShape("Shape",[a,b,c,d])},drawCircle:function(a,b,c,d,e,f){return this._genShape("Circle",[a,b,c,d,e,f])},drawPieSlice:function(a,b,c,d,e,f,g){return this._genShape("PieSlice",[a,b,c,d,e,f,g])},drawRect:function(a,b,c,d,e,f){return this._genShape("Rect",[a,b,c,d,e,f])},getElement:function(){return this.canvas},getLastShapeId:function(){return this.lastShapeId},reset:function(){alert("reset not implemented")},_insert:function(a,b){d(b).html(a)},_calculatePixelDims:function(a,b,c){var e;e=this._pxregex.exec(b),e?this.pixelHeight=e[1]:this.pixelHeight=d(c).height(),e=this._pxregex.exec(a),e?this.pixelWidth=e[1]:this.pixelWidth=d(c).width()},_genShape:function(a,b){var c=L++;return b.unshift(c),new G(this,c,a,b)},appendShape:function(a){alert("appendShape not implemented")},replaceWithShape:function(a,b){alert("replaceWithShape not implemented")},insertAfterShape:function(a,b){alert("insertAfterShape not implemented")},removeShapeId:function(a){alert("removeShapeId not implemented")},getShapeAt:function(a,b,c){alert("getShapeAt not implemented")},render:function(){alert("render not implemented")}}),I=g(H,{init:function(b,e,f,g){I._super.init.call(this,b,e,f),this.canvas=a.createElement("canvas"),f[0]&&(f=f[0]),d.data(f,"_jqs_vcanvas",this),d(this.canvas).css({display:"inline-block",width:b,height:e,verticalAlign:"top"}),this._insert(this.canvas,f),this._calculatePixelDims(b,e,this.canvas),this.canvas.width=this.pixelWidth,this.canvas.height=this.pixelHeight,this.interact=g,this.shapes={},this.shapeseq=[],this.currentTargetShapeId=c,d(this.canvas).css({width:this.pixelWidth,height:this.pixelHeight})},_getContext:function(a,b,d){var e=this.canvas.getContext("2d");return a!==c&&(e.strokeStyle=a),e.lineWidth=d===c?1:d,b!==c&&(e.fillStyle=b),e},reset:function(){var a=this._getContext();a.clearRect(0,0,this.pixelWidth,this.pixelHeight),this.shapes={},this.shapeseq=[],this.currentTargetShapeId=c},_drawShape:function(a,b,d,e,f){var g=this._getContext(d,e,f),h,i;g.beginPath(),g.moveTo(b[0][0]+.5,b[0][1]+.5);for(h=1,i=b.length;h<i;h++)g.lineTo(b[h][0]+.5,b[h][1]+.5);d!==c&&g.stroke(),e!==c&&g.fill(),this.targetX!==c&&this.targetY!==c&&g.isPointInPath(this.targetX,this.targetY)&&(this.currentTargetShapeId=a)},_drawCircle:function(a,d,e,f,g,h,i){var j=this._getContext(g,h,i);j.beginPath(),j.arc(d,e,f,0,2*b.PI,!1),this.targetX!==c&&this.targetY!==c&&j.isPointInPath(this.targetX,this.targetY)&&(this.currentTargetShapeId=a),g!==c&&j.stroke(),h!==c&&j.fill()},_drawPieSlice:function(a,b,d,e,f,g,h,i){var j=this._getContext(h,i);j.beginPath(),j.moveTo(b,d),j.arc(b,d,e,f,g,!1),j.lineTo(b,d),j.closePath(),h!==c&&j.stroke(),i&&j.fill(),this.targetX!==c&&this.targetY!==c&&j.isPointInPath(this.targetX,this.targetY)&&(this.currentTargetShapeId=a)},_drawRect:function(a,b,c,d,e,f,g){return this._drawShape(a,[[b,c],[b+d,c],[b+d,c+e],[b,c+e],[b,c]],f,g)},appendShape:function(a){return this.shapes[a.id]=a,this.shapeseq.push(a.id),this.lastShapeId=a.id,a.id},replaceWithShape:function(a,b){var c=this.shapeseq,d;this.shapes[b.id]=b;for(d=c.length;d--;)c[d]==a&&(c[d]=b.id);delete this.shapes[a]},replaceWithShapes:function(a,b){var c=this.shapeseq,d={},e,f,g;for(f=a.length;f--;)d[a[f]]=!0;for(f=c.length;f--;)e=c[f],d[e]&&(c.splice(f,1),delete this.shapes[e],g=f);for(f=b.length;f--;)c.splice(g,0,b[f].id),this.shapes[b[f].id]=b[f]},insertAfterShape:function(a,b){var c=this.shapeseq,d;for(d=c.length;d--;)if(c[d]===a){c.splice(d+1,0,b.id),this.shapes[b.id]=b;return}},removeShapeId:function(a){var b=this.shapeseq,c;for(c=b.length;c--;)if(b[c]===a){b.splice(c,1);break}delete this.shapes[a]},getShapeAt:function(a,b,c){return this.targetX=b,this.targetY=c,this.render(),this.currentTargetShapeId},render:function(){var a=this.shapeseq,b=this.shapes,c=a.length,d=this._getContext(),e,f,g;d.clearRect(0,0,this.pixelWidth,this.pixelHeight);for(g=0;g<c;g++)e=a[g],f=b[e],this["_draw"+f.type].apply(this,f.args);this.interact||(this.shapes={},this.shapeseq=[])}}),J=g(H,{init:function(b,c,e){var f;J._super.init.call(this,b,c,e),e[0]&&(e=e[0]),d.data(e,"_jqs_vcanvas",this),this.canvas=a.createElement("span"),d(this.canvas).css({display:"inline-block",position:"relative",overflow:"hidden",width:b,height:c,margin:"0px",padding:"0px",verticalAlign:"top"}),this._insert(this.canvas,e),this._calculatePixelDims(b,c,this.canvas),this.canvas.width=this.pixelWidth,this.canvas.height=this.pixelHeight,f='<v:group coordorigin="0 0" coordsize="'+this.pixelWidth+" "+this.pixelHeight+'"'+' style="position:absolute;top:0;left:0;width:'+this.pixelWidth+"px;height="+this.pixelHeight+'px;"></v:group>',this.canvas.insertAdjacentHTML("beforeEnd",f),this.group=d(this.canvas).children()[0],this.rendered=!1,this.prerender=""},_drawShape:function(a,b,d,e,f){var g=[],h,i,j,k,l,m,n;for(n=0,m=b.length;n<m;n++)g[n]=""+b[n][0]+","+b[n][1];return h=g.splice(0,1),f=f===c?1:f,i=d===c?' stroked="false" ':' strokeWeight="'+f+'px" strokeColor="'+d+'" ',j=e===c?' filled="false"':' fillColor="'+e+'" filled="true" ',k=g[0]===g[g.length-1]?"x ":"",l='<v:shape coordorigin="0 0" coordsize="'+this.pixelWidth+" "+this.pixelHeight+'" '+' id="jqsshape'+a+'" '+i+j+' style="position:absolute;left:0px;top:0px;height:'+this.pixelHeight+"px;width:"+this.pixelWidth+'px;padding:0px;margin:0px;" '+' path="m '+h+" l "+g.join(", ")+" "+k+'e">'+" </v:shape>",l},_drawCircle:function(a,b,d,e,f,g,h){var i,j,k;return b-=e,d-=e,i=f===c?' stroked="false" ':' strokeWeight="'+h+'px" strokeColor="'+f+'" ',j=g===c?' filled="false"':' fillColor="'+g+'" filled="true" ',k='<v:oval  id="jqsshape'+a+'" '+i+j+' style="position:absolute;top:'+d+"px; left:"+b+"px; width:"+e*2+"px; height:"+e*2+'px"></v:oval>',k},_drawPieSlice:function(a,d,e,f,g,h,i,j){var k,l,m,n,o,p,q,r;if(g===h)return"";h-g===2*b.PI&&(g=0,h=2*b.PI),l=d+b.round(b.cos(g)*f),m=e+b.round(b.sin(g)*f),n=d+b.round(b.cos(h)*f),o=e+b.round(b.sin(h)*f);if(l===n&&m===o){if(h-g<b.PI)return"";l=n=d+f,m=o=e}return l===n&&m===o&&h-g<b.PI?"":(k=[d-f,e-f,d+f,e+f,l,m,n,o],p=i===c?' stroked="false" ':' strokeWeight="1px" strokeColor="'+i+'" ',q=j===c?' filled="false"':' fillColor="'+j+'" filled="true" ',r='<v:shape coordorigin="0 0" coordsize="'+this.pixelWidth+" "+this.pixelHeight+'" '+' id="jqsshape'+a+'" '+p+q+' style="position:absolute;left:0px;top:0px;height:'+this.pixelHeight+"px;width:"+this.pixelWidth+'px;padding:0px;margin:0px;" '+' path="m '+d+","+e+" wa "+k.join(", ")+' x e">'+" </v:shape>",r)},_drawRect:function(a,b,c,d,e,f,g){return this._drawShape(a,[[b,c],[b,c+e],[b+d,c+e],[b+d,c],[b,c]],f,g)},reset:function(){this.group.innerHTML=""},appendShape:function(a){var b=this["_draw"+a.type].apply(this,a.args);return this.rendered?this.group.insertAdjacentHTML("beforeEnd",b):this.prerender+=b,this.lastShapeId=a.id,a.id},replaceWithShape:function(a,b){var c=d("#jqsshape"+a),e=this["_draw"+b.type].apply(this,b.args);c[0].outerHTML=e},replaceWithShapes:function(a,b){var c=d("#jqsshape"+a[0]),e="",f=b.length,g;for(g=0;g<f;g++)e+=this["_draw"+b[g].type].apply(this,b[g].args);c[0].outerHTML=e;for(g=1;g<a.length;g++)d("#jqsshape"+a[g]).remove()},insertAfterShape:function(a,b){var c=d("#jqsshape"+a),e=this["_draw"+b.type].apply(this,b.args);c[0].insertAdjacentHTML("afterEnd",e)},removeShapeId:function(a){var b=d("#jqsshape"+a);this.group.removeChild(b[0])},getShapeAt:function(a,b,c){var d=a.id.substr(8);return d},render:function(){this.rendered||(this.group.innerHTML=this.prerender,this.rendered=!0)}})})})(document,Math);
\ No newline at end of file
+[1]},{field:"uq",value:this.quartiles[2]}];return this.loutlier!==c&&a.push({field:"lo",value:this.loutlier}),this.routlier!==c&&a.push({field:"ro",value:this.routlier}),this.lwhisker!==c&&a.push({field:"lw",value:this.lwhisker}),this.rwhisker!==c&&a.push({field:"rw",value:this.rwhisker}),a},render:function(){var a=this.target,d=this.values,e=d.length,f=this.options,g=this.canvasWidth,h=this.canvasHeight,i=f.get("chartRangeMin")===c?b.min.apply(b,d):f.get("chartRangeMin"),k=f.get("chartRangeMax")===c?b.max.apply(b,d):f.get("chartRangeMax"),l=0,m,n,o,p,q,r,s,t,u,v,w;if(!D._super.render.call(this))return;if(f.get("raw"))f.get("showOutliers")&&d.length>5?(n=d[0],m=d[1],p=d[2],q=d[3],r=d[4],s=d[5],t=d[6]):(m=d[0],p=d[1],q=d[2],r=d[3],s=d[4]);else{d.sort(function(a,b){return a-b}),p=j(d,1),q=j(d,2),r=j(d,3),o=r-p;if(f.get("showOutliers")){m=s=c;for(u=0;u<e;u++)m===c&&d[u]>p-o*f.get("outlierIQR")&&(m=d[u]),d[u]<r+o*f.get("outlierIQR")&&(s=d[u]);n=d[0],t=d[e-1]}else m=d[0],s=d[e-1]}this.quartiles=[p,q,r],this.lwhisker=m,this.rwhisker=s,this.loutlier=n,this.routlier=t,w=g/(k-i+1),f.get("showOutliers")&&(l=b.ceil(f.get("spotRadius")),g-=2*b.ceil(f.get("spotRadius")),w=g/(k-i+1),n<m&&a.drawCircle((n-i)*w+l,h/2,f.get("spotRadius"),f.get("outlierLineColor"),f.get("outlierFillColor")).append(),t>s&&a.drawCircle((t-i)*w+l,h/2,f.get("spotRadius"),f.get("outlierLineColor"),f.get("outlierFillColor")).append()),a.drawRect(b.round((p-i)*w+l),b.round(h*.1),b.round((r-p)*w),b.round(h*.8),f.get("boxLineColor"),f.get("boxFillColor")).append(),a.drawLine(b.round((m-i)*w+l),b.round(h/2),b.round((p-i)*w+l),b.round(h/2),f.get("lineColor")).append(),a.drawLine(b.round((m-i)*w+l),b.round(h/4),b.round((m-i)*w+l),b.round(h-h/4),f.get("whiskerColor")).append(),a.drawLine(b.round((s-i)*w+l),b.round(h/2),b.round((r-i)*w+l),b.round(h/2),f.get("lineColor")).append(),a.drawLine(b.round((s-i)*w+l),b.round(h/4),b.round((s-i)*w+l),b.round(h-h/4),f.get("whiskerColor")).append(),a.drawLine(b.round((q-i)*w+l),b.round(h*.1),b.round((q-i)*w+l),b.round(h*.9),f.get("medianColor")).append(),f.get("target")&&(v=b.ceil(f.get("spotRadius")),a.drawLine(b.round((f.get("target")-i)*w+l),b.round(h/2-v),b.round((f.get("target")-i)*w+l),b.round(h/2+v),f.get("targetColor")).append(),a.drawLine(b.round((f.get("target")-i)*w+l-v),b.round(h/2),b.round((f.get("target")-i)*w+l+v),b.round(h/2),f.get("targetColor")).append()),a.render()}}),G=g({init:function(a,b,c,d){this.target=a,this.id=b,this.type=c,this.args=d},append:function(){return this.target.appendShape(this),this}}),H=g({_pxregex:/(\d+)(px)?\s*$/i,init:function(a,b,c){if(!a)return;this.width=a,this.height=b,this.target=c,this.lastShapeId=null,c[0]&&(c=c[0]),d.data(c,"_jqs_vcanvas",this)},drawLine:function(a,b,c,d,e,f){return this.drawShape([[a,b],[c,d]],e,f)},drawShape:function(a,b,c,d){return this._genShape("Shape",[a,b,c,d])},drawCircle:function(a,b,c,d,e,f){return this._genShape("Circle",[a,b,c,d,e,f])},drawPieSlice:function(a,b,c,d,e,f,g){return this._genShape("PieSlice",[a,b,c,d,e,f,g])},drawRect:function(a,b,c,d,e,f){return this._genShape("Rect",[a,b,c,d,e,f])},getElement:function(){return this.canvas},getLastShapeId:function(){return this.lastShapeId},reset:function(){alert("reset not implemented")},_insert:function(a,b){d(b).html(a)},_calculatePixelDims:function(a,b,c){var e;e=this._pxregex.exec(b),e?this.pixelHeight=e[1]:this.pixelHeight=d(c).height(),e=this._pxregex.exec(a),e?this.pixelWidth=e[1]:this.pixelWidth=d(c).width()},_genShape:function(a,b){var c=L++;return b.unshift(c),new G(this,c,a,b)},appendShape:function(a){alert("appendShape not implemented")},replaceWithShape:function(a,b){alert("replaceWithShape not implemented")},insertAfterShape:function(a,b){alert("insertAfterShape not implemented")},removeShapeId:function(a){alert("removeShapeId not implemented")},getShapeAt:function(a,b,c){alert("getShapeAt not implemented")},render:function(){alert("render not implemented")}}),I=g(H,{init:function(b,e,f,g){I._super.init.call(this,b,e,f),this.canvas=a.createElement("canvas"),f[0]&&(f=f[0]),d.data(f,"_jqs_vcanvas",this),d(this.canvas).css({display:"inline-block",width:b,height:e,verticalAlign:"top"}),this._insert(this.canvas,f),this._calculatePixelDims(b,e,this.canvas),this.canvas.width=this.pixelWidth,this.canvas.height=this.pixelHeight,this.interact=g,this.shapes={},this.shapeseq=[],this.currentTargetShapeId=c,d(this.canvas).css({width:this.pixelWidth,height:this.pixelHeight})},_getContext:function(a,b,d){var e=this.canvas.getContext("2d");return a!==c&&(e.strokeStyle=a),e.lineWidth=d===c?1:d,b!==c&&(e.fillStyle=b),e},reset:function(){var a=this._getContext();a.clearRect(0,0,this.pixelWidth,this.pixelHeight),this.shapes={},this.shapeseq=[],this.currentTargetShapeId=c},_drawShape:function(a,b,d,e,f){var g=this._getContext(d,e,f),h,i;g.beginPath(),g.moveTo(b[0][0]+.5,b[0][1]+.5);for(h=1,i=b.length;h<i;h++)g.lineTo(b[h][0]+.5,b[h][1]+.5);d!==c&&g.stroke(),e!==c&&g.fill(),this.targetX!==c&&this.targetY!==c&&g.isPointInPath(this.targetX,this.targetY)&&(this.currentTargetShapeId=a)},_drawCircle:function(a,d,e,f,g,h,i){var j=this._getContext(g,h,i);j.beginPath(),j.arc(d,e,f,0,2*b.PI,!1),this.targetX!==c&&this.targetY!==c&&j.isPointInPath(this.targetX,this.targetY)&&(this.currentTargetShapeId=a),g!==c&&j.stroke(),h!==c&&j.fill()},_drawPieSlice:function(a,b,d,e,f,g,h,i){var j=this._getContext(h,i);j.beginPath(),j.moveTo(b,d),j.arc(b,d,e,f,g,!1),j.lineTo(b,d),j.closePath(),h!==c&&j.stroke(),i&&j.fill(),this.targetX!==c&&this.targetY!==c&&j.isPointInPath(this.targetX,this.targetY)&&(this.currentTargetShapeId=a)},_drawRect:function(a,b,c,d,e,f,g){return this._drawShape(a,[[b,c],[b+d,c],[b+d,c+e],[b,c+e],[b,c]],f,g)},appendShape:function(a){return this.shapes[a.id]=a,this.shapeseq.push(a.id),this.lastShapeId=a.id,a.id},replaceWithShape:function(a,b){var c=this.shapeseq,d;this.shapes[b.id]=b;for(d=c.length;d--;)c[d]==a&&(c[d]=b.id);delete this.shapes[a]},replaceWithShapes:function(a,b){var c=this.shapeseq,d={},e,f,g;for(f=a.length;f--;)d[a[f]]=!0;for(f=c.length;f--;)e=c[f],d[e]&&(c.splice(f,1),delete this.shapes[e],g=f);for(f=b.length;f--;)c.splice(g,0,b[f].id),this.shapes[b[f].id]=b[f]},insertAfterShape:function(a,b){var c=this.shapeseq,d;for(d=c.length;d--;)if(c[d]===a){c.splice(d+1,0,b.id),this.shapes[b.id]=b;return}},removeShapeId:function(a){var b=this.shapeseq,c;for(c=b.length;c--;)if(b[c]===a){b.splice(c,1);break}delete this.shapes[a]},getShapeAt:function(a,b,c){return this.targetX=b,this.targetY=c,this.render(),this.currentTargetShapeId},render:function(){var a=this.shapeseq,b=this.shapes,c=a.length,d=this._getContext(),e,f,g;d.clearRect(0,0,this.pixelWidth,this.pixelHeight);for(g=0;g<c;g++)e=a[g],f=b[e],this["_draw"+f.type].apply(this,f.args);this.interact||(this.shapes={},this.shapeseq=[])}}),J=g(H,{init:function(b,c,e){var f;J._super.init.call(this,b,c,e),e[0]&&(e=e[0]),d.data(e,"_jqs_vcanvas",this),this.canvas=a.createElement("span"),d(this.canvas).css({display:"inline-block",position:"relative",overflow:"hidden",width:b,height:c,margin:"0px",padding:"0px",verticalAlign:"top"}),this._insert(this.canvas,e),this._calculatePixelDims(b,c,this.canvas),this.canvas.width=this.pixelWidth,this.canvas.height=this.pixelHeight,f='<v:group coordorigin="0 0" coordsize="'+this.pixelWidth+" "+this.pixelHeight+'"'+' style="position:absolute;top:0;left:0;width:'+this.pixelWidth+"px;height="+this.pixelHeight+'px;"></v:group>',this.canvas.insertAdjacentHTML("beforeEnd",f),this.group=d(this.canvas).children()[0],this.rendered=!1,this.prerender=""},_drawShape:function(a,b,d,e,f){var g=[],h,i,j,k,l,m,n;for(n=0,m=b.length;n<m;n++)g[n]=""+b[n][0]+","+b[n][1];return h=g.splice(0,1),f=f===c?1:f,i=d===c?' stroked="false" ':' strokeWeight="'+f+'px" strokeColor="'+d+'" ',j=e===c?' filled="false"':' fillColor="'+e+'" filled="true" ',k=g[0]===g[g.length-1]?"x ":"",l='<v:shape coordorigin="0 0" coordsize="'+this.pixelWidth+" "+this.pixelHeight+'" '+' id="jqsshape'+a+'" '+i+j+' style="position:absolute;left:0px;top:0px;height:'+this.pixelHeight+"px;width:"+this.pixelWidth+'px;padding:0px;margin:0px;" '+' path="m '+h+" l "+g.join(", ")+" "+k+'e">'+" </v:shape>",l},_drawCircle:function(a,b,d,e,f,g,h){var i,j,k;return b-=e,d-=e,i=f===c?' stroked="false" ':' strokeWeight="'+h+'px" strokeColor="'+f+'" ',j=g===c?' filled="false"':' fillColor="'+g+'" filled="true" ',k='<v:oval  id="jqsshape'+a+'" '+i+j+' style="position:absolute;top:'+d+"px; left:"+b+"px; width:"+e*2+"px; height:"+e*2+'px"></v:oval>',k},_drawPieSlice:function(a,d,e,f,g,h,i,j){var k,l,m,n,o,p,q,r;if(g===h)return"";h-g===2*b.PI&&(g=0,h=2*b.PI),l=d+b.round(b.cos(g)*f),m=e+b.round(b.sin(g)*f),n=d+b.round(b.cos(h)*f),o=e+b.round(b.sin(h)*f);if(l===n&&m===o){if(h-g<b.PI)return"";l=n=d+f,m=o=e}return l===n&&m===o&&h-g<b.PI?"":(k=[d-f,e-f,d+f,e+f,l,m,n,o],p=i===c?' stroked="false" ':' strokeWeight="1px" strokeColor="'+i+'" ',q=j===c?' filled="false"':' fillColor="'+j+'" filled="true" ',r='<v:shape coordorigin="0 0" coordsize="'+this.pixelWidth+" "+this.pixelHeight+'" '+' id="jqsshape'+a+'" '+p+q+' style="position:absolute;left:0px;top:0px;height:'+this.pixelHeight+"px;width:"+this.pixelWidth+'px;padding:0px;margin:0px;" '+' path="m '+d+","+e+" wa "+k.join(", ")+' x e">'+" </v:shape>",r)},_drawRect:function(a,b,c,d,e,f,g){return this._drawShape(a,[[b,c],[b,c+e],[b+d,c+e],[b+d,c],[b,c]],f,g)},reset:function(){this.group.innerHTML=""},appendShape:function(a){var b=this["_draw"+a.type].apply(this,a.args);return this.rendered?this.group.insertAdjacentHTML("beforeEnd",b):this.prerender+=b,this.lastShapeId=a.id,a.id},replaceWithShape:function(a,b){var c=d("#jqsshape"+a),e=this["_draw"+b.type].apply(this,b.args);c[0].outerHTML=e},replaceWithShapes:function(a,b){var c=d("#jqsshape"+a[0]),e="",f=b.length,g;for(g=0;g<f;g++)e+=this["_draw"+b[g].type].apply(this,b[g].args);c[0].outerHTML=e;for(g=1;g<a.length;g++)d("#jqsshape"+a[g]).remove()},insertAfterShape:function(a,b){var c=d("#jqsshape"+a),e=this["_draw"+b.type].apply(this,b.args);c[0].insertAdjacentHTML("afterEnd",e)},removeShapeId:function(a){var b=d("#jqsshape"+a);this.group.removeChild(b[0])},getShapeAt:function(a,b,c){var d=a.id.substr(8);return d},render:function(){this.rendered||(this.group.innerHTML=this.prerender,this.rendered=!0)}})})})(document,Math);
diff --git a/web/lib/lz-string-1.4.4.min.js b/web/gui/lib/lz-string-1.4.4.min.js
index 2d1900a0d..c7de0d585 100644
--- a/web/lib/lz-string-1.4.4.min.js
+++ b/web/gui/lib/lz-string-1.4.4.min.js
@@ -1 +1,2 @@
+// SPDX-License-Identifier: WTFPL
 var LZString=function(){function o(o,r){if(!t[o]){t[o]={};for(var n=0;n<o.length;n++)t[o][o.charAt(n)]=n}return t[o][r]}var r=String.fromCharCode,n="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",e="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-$",t={},i={compressToBase64:function(o){if(null==o)return"";var r=i._compress(o,6,function(o){return n.charAt(o)});switch(r.length%4){default:case 0:return r;case 1:return r+"===";case 2:return r+"==";case 3:return r+"="}},decompressFromBase64:function(r){return null==r?"":""==r?null:i._decompress(r.length,32,function(e){return o(n,r.charAt(e))})},compressToUTF16:function(o){return null==o?"":i._compress(o,15,function(o){return r(o+32)})+" "},decompressFromUTF16:function(o){return null==o?"":""==o?null:i._decompress(o.length,16384,function(r){return o.charCodeAt(r)-32})},compressToUint8Array:function(o){for(var r=i.compress(o),n=new Uint8Array(2*r.length),e=0,t=r.length;t>e;e++){var s=r.charCodeAt(e);n[2*e]=s>>>8,n[2*e+1]=s%256}return n},decompressFromUint8Array:function(o){if(null===o||void 0===o)return i.decompress(o);for(var n=new Array(o.length/2),e=0,t=n.length;t>e;e++)n[e]=256*o[2*e]+o[2*e+1];var s=[];return n.forEach(function(o){s.push(r(o))}),i.decompress(s.join(""))},compressToEncodedURIComponent:function(o){return null==o?"":i._compress(o,6,function(o){return e.charAt(o)})},decompressFromEncodedURIComponent:function(r){return null==r?"":""==r?null:(r=r.replace(/ /g,"+"),i._decompress(r.length,32,function(n){return o(e,r.charAt(n))}))},compress:function(o){return i._compress(o,16,function(o){return r(o)})},_compress:function(o,r,n){if(null==o)return"";var e,t,i,s={},p={},u="",c="",a="",l=2,f=3,h=2,d=[],m=0,v=0;for(i=0;i<o.length;i+=1)if(u=o.charAt(i),Object.prototype.hasOwnProperty.call(s,u)||(s[u]=f++,p[u]=!0),c=a+u,Object.prototype.hasOwnProperty.call(s,c))a=c;else{if(Object.prototype.hasOwnProperty.call(p,a)){if(a.charCodeAt(0)<256){for(e=0;h>e;e++)m<<=1,v==r-1?(v=0,d.push(n(m)),m=0):v++;for(t=a.charCodeAt(0),e=0;8>e;e++)m=m<<1|1&t,v==r-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}else{for(t=1,e=0;h>e;e++)m=m<<1|t,v==r-1?(v=0,d.push(n(m)),m=0):v++,t=0;for(t=a.charCodeAt(0),e=0;16>e;e++)m=m<<1|1&t,v==r-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}l--,0==l&&(l=Math.pow(2,h),h++),delete p[a]}else for(t=s[a],e=0;h>e;e++)m=m<<1|1&t,v==r-1?(v=0,d.push(n(m)),m=0):v++,t>>=1;l--,0==l&&(l=Math.pow(2,h),h++),s[c]=f++,a=String(u)}if(""!==a){if(Object.prototype.hasOwnProperty.call(p,a)){if(a.charCodeAt(0)<256){for(e=0;h>e;e++)m<<=1,v==r-1?(v=0,d.push(n(m)),m=0):v++;for(t=a.charCodeAt(0),e=0;8>e;e++)m=m<<1|1&t,v==r-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}else{for(t=1,e=0;h>e;e++)m=m<<1|t,v==r-1?(v=0,d.push(n(m)),m=0):v++,t=0;for(t=a.charCodeAt(0),e=0;16>e;e++)m=m<<1|1&t,v==r-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}l--,0==l&&(l=Math.pow(2,h),h++),delete p[a]}else for(t=s[a],e=0;h>e;e++)m=m<<1|1&t,v==r-1?(v=0,d.push(n(m)),m=0):v++,t>>=1;l--,0==l&&(l=Math.pow(2,h),h++)}for(t=2,e=0;h>e;e++)m=m<<1|1&t,v==r-1?(v=0,d.push(n(m)),m=0):v++,t>>=1;for(;;){if(m<<=1,v==r-1){d.push(n(m));break}v++}return d.join("")},decompress:function(o){return null==o?"":""==o?null:i._decompress(o.length,32768,function(r){return o.charCodeAt(r)})},_decompress:function(o,n,e){var t,i,s,p,u,c,a,l,f=[],h=4,d=4,m=3,v="",w=[],A={val:e(0),position:n,index:1};for(i=0;3>i;i+=1)f[i]=i;for(p=0,c=Math.pow(2,2),a=1;a!=c;)u=A.val&A.position,A.position>>=1,0==A.position&&(A.position=n,A.val=e(A.index++)),p|=(u>0?1:0)*a,a<<=1;switch(t=p){case 0:for(p=0,c=Math.pow(2,8),a=1;a!=c;)u=A.val&A.position,A.position>>=1,0==A.position&&(A.position=n,A.val=e(A.index++)),p|=(u>0?1:0)*a,a<<=1;l=r(p);break;case 1:for(p=0,c=Math.pow(2,16),a=1;a!=c;)u=A.val&A.position,A.position>>=1,0==A.position&&(A.position=n,A.val=e(A.index++)),p|=(u>0?1:0)*a,a<<=1;l=r(p);break;case 2:return""}for(f[3]=l,s=l,w.push(l);;){if(A.index>o)return"";for(p=0,c=Math.pow(2,m),a=1;a!=c;)u=A.val&A.position,A.position>>=1,0==A.position&&(A.position=n,A.val=e(A.index++)),p|=(u>0?1:0)*a,a<<=1;switch(l=p){case 0:for(p=0,c=Math.pow(2,8),a=1;a!=c;)u=A.val&A.position,A.position>>=1,0==A.position&&(A.position=n,A.val=e(A.index++)),p|=(u>0?1:0)*a,a<<=1;f[d++]=r(p),l=d-1,h--;break;case 1:for(p=0,c=Math.pow(2,16),a=1;a!=c;)u=A.val&A.position,A.position>>=1,0==A.position&&(A.position=n,A.val=e(A.index++)),p|=(u>0?1:0)*a,a<<=1;f[d++]=r(p),l=d-1,h--;break;case 2:return w.join("")}if(0==h&&(h=Math.pow(2,m),m++),f[l])v=f[l];else{if(l!==d)return null;v=s+s.charAt(0)}w.push(v),f[d++]=s+v.charAt(0),h--,s=v,0==h&&(h=Math.pow(2,m),m++)}}};return i}();"function"==typeof define&&define.amd?define(function(){return LZString}):"undefined"!=typeof module&&null!=module&&(module.exports=LZString);
diff --git a/web/lib/morris-0.5.1.min.js b/web/gui/lib/morris-0.5.1.min.js
index c3bda2f93..2e4983271 100644
--- a/web/lib/morris-0.5.1.min.js
+++ b/web/gui/lib/morris-0.5.1.min.js
@@ -2,6 +2,7 @@
 morris.js v0.5.0
 Copyright 2014 Olly Smith All rights reserved.
 Licensed under the BSD-2-Clause License.
+SPDX-License-Identifier: BSD-2-Clause
 */
 (function(){var a,b,c,d,e=[].slice,f=function(a,b){return function(){return a.apply(b,arguments)}},g={}.hasOwnProperty,h=function(a,b){function c(){this.constructor=a}for(var d in b)g.call(b,d)&&(a[d]=b[d]);return c.prototype=b.prototype,a.prototype=new c,a.__super__=b.prototype,a},i=[].indexOf||function(a){for(var b=0,c=this.length;c>b;b++)if(b in this&&this[b]===a)return b;return-1};b=window.Morris={},a=jQuery,b.EventEmitter=function(){function a(){}return a.prototype.on=function(a,b){return null==this.handlers&&(this.handlers={}),null==this.handlers[a]&&(this.handlers[a]=[]),this.handlers[a].push(b),this},a.prototype.fire=function(){var a,b,c,d,f,g,h;if(c=arguments[0],a=2<=arguments.length?e.call(arguments,1):[],null!=this.handlers&&null!=this.handlers[c]){for(g=this.handlers[c],h=[],d=0,f=g.length;f>d;d++)b=g[d],h.push(b.apply(null,a));return h}},a}(),b.commas=function(a){var b,c,d,e;return null!=a?(d=0>a?"-":"",b=Math.abs(a),c=Math.floor(b).toFixed(0),d+=c.replace(/(?=(?:\d{3})+$)(?!^)/g,","),e=b.toString(),e.length>c.length&&(d+=e.slice(c.length)),d):"-"},b.pad2=function(a){return(10>a?"0":"")+a},b.Grid=function(c){function d(b){this.resizeHandler=f(this.resizeHandler,this);var c=this;if(this.el="string"==typeof b.element?a(document.getElementById(b.element)):a(b.element),null==this.el||0===this.el.length)throw new Error("Graph container element not found");"static"===this.el.css("position")&&this.el.css("position","relative"),this.options=a.extend({},this.gridDefaults,this.defaults||{},b),"string"==typeof this.options.units&&(this.options.postUnits=b.units),this.raphael=new Raphael(this.el[0]),this.elementWidth=null,this.elementHeight=null,this.dirty=!1,this.selectFrom=null,this.init&&this.init(),this.setData(this.options.data),this.el.bind("mousemove",function(a){var b,d,e,f,g;return d=c.el.offset(),g=a.pageX-d.left,c.selectFrom?(b=c.data[c.hitTest(Math.min(g,c.selectFrom))]._x,e=c.data[c.hitTest(Math.max(g,c.selectFrom))]._x,f=e-b,c.selectionRect.attr({x:b,width:f})):c.fire("hovermove",g,a.pageY-d.top)}),this.el.bind("mouseleave",function(){return c.selectFrom&&(c.selectionRect.hide(),c.selectFrom=null),c.fire("hoverout")}),this.el.bind("touchstart touchmove touchend",function(a){var b,d;return d=a.originalEvent.touches[0]||a.originalEvent.changedTouches[0],b=c.el.offset(),c.fire("hovermove",d.pageX-b.left,d.pageY-b.top)}),this.el.bind("click",function(a){var b;return b=c.el.offset(),c.fire("gridclick",a.pageX-b.left,a.pageY-b.top)}),this.options.rangeSelect&&(this.selectionRect=this.raphael.rect(0,0,0,this.el.innerHeight()).attr({fill:this.options.rangeSelectColor,stroke:!1}).toBack().hide(),this.el.bind("mousedown",function(a){var b;return b=c.el.offset(),c.startRange(a.pageX-b.left)}),this.el.bind("mouseup",function(a){var b;return b=c.el.offset(),c.endRange(a.pageX-b.left),c.fire("hovermove",a.pageX-b.left,a.pageY-b.top)})),this.options.resize&&a(window).bind("resize",function(){return null!=c.timeoutId&&window.clearTimeout(c.timeoutId),c.timeoutId=window.setTimeout(c.resizeHandler,100)}),this.el.css("-webkit-tap-highlight-color","rgba(0,0,0,0)"),this.postInit&&this.postInit()}return h(d,c),d.prototype.gridDefaults={dateFormat:null,axes:!0,grid:!0,gridLineColor:"#aaa",gridStrokeWidth:.5,gridTextColor:"#888",gridTextSize:12,gridTextFamily:"sans-serif",gridTextWeight:"normal",hideHover:!1,yLabelFormat:null,xLabelAngle:0,numLines:5,padding:25,parseTime:!0,postUnits:"",preUnits:"",ymax:"auto",ymin:"auto 0",goals:[],goalStrokeWidth:1,goalLineColors:["#666633","#999966","#cc6666","#663333"],events:[],eventStrokeWidth:1,eventLineColors:["#005a04","#ccffbb","#3a5f0b","#005502"],rangeSelect:null,rangeSelectColor:"#eef",resize:!1},d.prototype.setData=function(a,c){var d,e,f,g,h,i,j,k,l,m,n,o,p,q,r;return 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q&&(q=null),null!=q&&(this.cumulative?l+=q:null!=o?(o=Math.max(q,o),p=Math.min(q,p)):o=p=q),this.cumulative&&null!=l&&(o=Math.max(l,o),p=Math.min(l,p)),d.push(q);return d}.call(this),g.push(i);return g}.call(this),this.options.parseTime&&(this.data=this.data.sort(function(a,b){return(a.x>b.x)-(b.x>a.x)})),this.xmin=this.data[0].x,this.xmax=this.data[this.data.length-1].x,this.events=[],this.options.events.length>0&&(this.events=this.options.parseTime?function(){var a,c,e,f;for(e=this.options.events,f=[],a=0,c=e.length;c>a;a++)d=e[a],f.push(b.parseDate(d));return 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c?"auto"===c.slice(0,4)?c.length>5?(d=parseInt(c.slice(5),10),null==b?d:Math[a](b,d)):null!=b?b:0:parseInt(c,10):c},d.prototype.autoGridLines=function(a,b,c){var d,e,f,g,h,i,j,k,l;return h=b-a,l=Math.floor(Math.log(h)/Math.log(10)),j=Math.pow(10,l),e=Math.floor(a/j)*j,d=Math.ceil(b/j)*j,i=(d-e)/(c-1),1===j&&i>1&&Math.ceil(i)!==i&&(i=Math.ceil(i),d=e+i*(c-1)),0>e&&d>0&&(e=Math.floor(a/i)*i,d=Math.ceil(b/i)*i),1>i?(g=Math.floor(Math.log(i)/Math.log(10)),f=function(){var a,b;for(b=[],k=a=e;i>0?d>=a:a>=d;k=a+=i)b.push(parseFloat(k.toFixed(1-g)));return b}()):f=function(){var a,b;for(b=[],k=a=e;i>0?d>=a:a>=d;k=a+=i)b.push(k);return b}(),f},d.prototype._calc=function(){var a,b,c,d,e,f,g,h;return e=this.el.width(),c=this.el.height(),(this.elementWidth!==e||this.elementHeight!==c||this.dirty)&&(this.elementWidth=e,this.elementHeight=c,this.dirty=!1,this.left=this.options.padding,this.right=this.elementWidth-this.options.padding,this.top=this.options.padding,this.bottom=this.elementHeight-this.options.padding,((g=this.options.axes)===!0||"both"===g||"y"===g)&&(f=function(){var a,c,d,e;for(d=this.grid,e=[],a=0,c=d.length;c>a;a++)b=d[a],e.push(this.measureText(this.yAxisFormat(b)).width);return e}.call(this),this.left+=Math.max.apply(Math,f)),((h=this.options.axes)===!0||"both"===h||"x"===h)&&(a=function(){var a,b,c;for(c=[],d=a=0,b=this.data.length;b>=0?b>a:a>b;d=b>=0?++a:--a)c.push(this.measureText(this.data[d].text,-this.options.xLabelAngle).height);return c}.call(this),this.bottom-=Math.max.apply(Math,a)),this.width=Math.max(1,this.right-this.left),this.height=Math.max(1,this.bottom-this.top),this.dx=this.width/(this.xmax-this.xmin),this.dy=this.height/(this.ymax-this.ymin),this.calc)?this.calc():void 0},d.prototype.transY=function(a){return this.bottom-(a-this.ymin)*this.dy},d.prototype.transX=function(a){return 1===this.data.length?(this.left+this.right)/2:this.left+(a-this.xmin)*this.dx},d.prototype.redraw=function(){return this.raphael.clear(),this._calc(),this.drawGrid(),this.drawGoals(),this.drawEvents(),this.draw?this.draw():void 0},d.prototype.measureText=function(a,b){var c,d;return null==b&&(b=0),d=this.raphael.text(100,100,a).attr("font-size",this.options.gridTextSize).attr("font-family",this.options.gridTextFamily).attr("font-weight",this.options.gridTextWeight).rotate(b),c=d.getBBox(),d.remove(),c},d.prototype.yAxisFormat=function(a){return this.yLabelFormat(a)},d.prototype.yLabelFormat=function(a){return"function"==typeof this.options.yLabelFormat?this.options.yLabelFormat(a):""+this.options.preUnits+b.commas(a)+this.options.postUnits},d.prototype.drawGrid=function(){var a,b,c,d,e,f,g,h;if(this.options.grid!==!1||(e=this.options.axes)===!0||"both"===e||"y"===e){for(f=this.grid,h=[],c=0,d=f.length;d>c;c++)a=f[c],b=this.transY(a),((g=this.options.axes)===!0||"both"===g||"y"===g)&&this.drawYAxisLabel(this.left-this.options.padding/2,b,this.yAxisFormat(a)),this.options.grid?h.push(this.drawGridLine("M"+this.left+","+b+"H"+(this.left+this.width))):h.push(void 0);return h}},d.prototype.drawGoals=function(){var a,b,c,d,e,f,g;for(f=this.options.goals,g=[],c=d=0,e=f.length;e>d;c=++d)b=f[c],a=this.options.goalLineColors[c%this.options.goalLineColors.length],g.push(this.drawGoal(b,a));return g},d.prototype.drawEvents=function(){var a,b,c,d,e,f,g;for(f=this.events,g=[],c=d=0,e=f.length;e>d;c=++d)b=f[c],a=this.options.eventLineColors[c%this.options.eventLineColors.length],g.push(this.drawEvent(b,a));return g},d.prototype.drawGoal=function(a,b){return this.raphael.path("M"+this.left+","+this.transY(a)+"H"+this.right).attr("stroke",b).attr("stroke-width",this.options.goalStrokeWidth)},d.prototype.drawEvent=function(a,b){return this.raphael.path("M"+this.transX(a)+","+this.bottom+"V"+this.top).attr("stroke",b).attr("stroke-width",this.options.eventStrokeWidth)},d.prototype.drawYAxisLabel=function(a,b,c){return this.raphael.text(a,b,c).attr("font-size",this.options.gridTextSize).attr("font-family",this.options.gridTextFamily).attr("font-weight",this.options.gridTextWeight).attr("fill",this.options.gridTextColor).attr("text-anchor","end")},d.prototype.drawGridLine=function(a){return this.raphael.path(a).attr("stroke",this.options.gridLineColor).attr("stroke-width",this.options.gridStrokeWidth)},d.prototype.startRange=function(a){return this.hover.hide(),this.selectFrom=a,this.selectionRect.attr({x:a,width:0}).show()},d.prototype.endRange=function(a){var b,c;return this.selectFrom?(c=Math.min(this.selectFrom,a),b=Math.max(this.selectFrom,a),this.options.rangeSelect.call(this.el,{start:this.data[this.hitTest(c)].x,end:this.data[this.hitTest(b)].x}),this.selectFrom=null):void 0},d.prototype.resizeHandler=function(){return this.timeoutId=null,this.raphael.setSize(this.el.width(),this.el.height()),this.redraw()},d}(b.EventEmitter),b.parseDate=function(a){var b,c,d,e,f,g,h,i,j,k,l;return"number"==typeof a?a:(c=a.match(/^(\d+) Q(\d)$/),e=a.match(/^(\d+)-(\d+)$/),f=a.match(/^(\d+)-(\d+)-(\d+)$/),h=a.match(/^(\d+) W(\d+)$/),i=a.match(/^(\d+)-(\d+)-(\d+)[ T](\d+):(\d+)(Z|([+-])(\d\d):?(\d\d))?$/),j=a.match(/^(\d+)-(\d+)-(\d+)[ T](\d+):(\d+):(\d+(\.\d+)?)(Z|([+-])(\d\d):?(\d\d))?$/),c?new Date(parseInt(c[1],10),3*parseInt(c[2],10)-1,1).getTime():e?new Date(parseInt(e[1],10),parseInt(e[2],10)-1,1).getTime():f?new Date(parseInt(f[1],10),parseInt(f[2],10)-1,parseInt(f[3],10)).getTime():h?(k=new Date(parseInt(h[1],10),0,1),4!==k.getDay()&&k.setMonth(0,1+(4-k.getDay()+7)%7),k.getTime()+6048e5*parseInt(h[2],10)):i?i[6]?(g=0,"Z"!==i[6]&&(g=60*parseInt(i[8],10)+parseInt(i[9],10),"+"===i[7]&&(g=0-g)),Date.UTC(parseInt(i[1],10),parseInt(i[2],10)-1,parseInt(i[3],10),parseInt(i[4],10),parseInt(i[5],10)+g)):new Date(parseInt(i[1],10),parseInt(i[2],10)-1,parseInt(i[3],10),parseInt(i[4],10),parseInt(i[5],10)).getTime():j?(l=parseFloat(j[6]),b=Math.floor(l),d=Math.round(1e3*(l-b)),j[8]?(g=0,"Z"!==j[8]&&(g=60*parseInt(j[10],10)+parseInt(j[11],10),"+"===j[9]&&(g=0-g)),Date.UTC(parseInt(j[1],10),parseInt(j[2],10)-1,parseInt(j[3],10),parseInt(j[4],10),parseInt(j[5],10)+g,b,d)):new Date(parseInt(j[1],10),parseInt(j[2],10)-1,parseInt(j[3],10),parseInt(j[4],10),parseInt(j[5],10),b,d).getTime()):new Date(parseInt(a,10),0,1).getTime())},b.Hover=function(){function c(c){null==c&&(c={}),this.options=a.extend({},b.Hover.defaults,c),this.el=a("<div class='"+this.options["class"]+"'></div>"),this.el.hide(),this.options.parent.append(this.el)}return c.defaults={"class":"morris-hover morris-default-style"},c.prototype.update=function(a,b,c){return a?(this.html(a),this.show(),this.moveTo(b,c)):this.hide()},c.prototype.html=function(a){return this.el.html(a)},c.prototype.moveTo=function(a,b){var c,d,e,f,g,h;return g=this.options.parent.innerWidth(),f=this.options.parent.innerHeight(),d=this.el.outerWidth(),c=this.el.outerHeight(),e=Math.min(Math.max(0,a-d/2),g-d),null!=b?(h=b-c-10,0>h&&(h=b+10,h+c>f&&(h=f/2-c/2))):h=f/2-c/2,this.el.css({left:e+"px",top:parseInt(h)+"px"})},c.prototype.show=function(){return this.el.show()},c.prototype.hide=function(){return this.el.hide()},c}(),b.Line=function(a){function c(a){return this.hilight=f(this.hilight,this),this.onHoverOut=f(this.onHoverOut,this),this.onHoverMove=f(this.onHoverMove,this),this.onGridClick=f(this.onGridClick,this),this instanceof b.Line?(c.__super__.constructor.call(this,a),void 0):new b.Line(a)}return h(c,a),c.prototype.init=function(){return"always"!==this.options.hideHover?(this.hover=new b.Hover({parent:this.el}),this.on("hovermove",this.onHoverMove),this.on("hoverout",this.onHoverOut),this.on("gridclick",this.onGridClick)):void 0},c.prototype.defaults={lineWidth:3,pointSize:4,lineColors:["#0b62a4","#7A92A3","#4da74d","#afd8f8","#edc240","#cb4b4b","#9440ed"],pointStrokeWidths:[1],pointStrokeColors:["#ffffff"],pointFillColors:[],smooth:!0,xLabels:"auto",xLabelFormat:null,xLabelMargin:24,hideHover:!1},c.prototype.calc=function(){return this.calcPoints(),this.generatePaths()},c.prototype.calcPoints=function(){var a,b,c,d,e,f;for(e=this.data,f=[],c=0,d=e.length;d>c;c++)a=e[c],a._x=this.transX(a.x),a._y=function(){var c,d,e,f;for(e=a.y,f=[],c=0,d=e.length;d>c;c++)b=e[c],null!=b?f.push(this.transY(b)):f.push(b);return f}.call(this),f.push(a._ymax=Math.min.apply(Math,[this.bottom].concat(function(){var c,d,e,f;for(e=a._y,f=[],c=0,d=e.length;d>c;c++)b=e[c],null!=b&&f.push(b);return f}())));return f},c.prototype.hitTest=function(a){var b,c,d,e,f;if(0===this.data.length)return null;for(f=this.data.slice(1),b=d=0,e=f.length;e>d&&(c=f[b],!(a<(c._x+this.data[b]._x)/2));b=++d);return b},c.prototype.onGridClick=function(a,b){var c;return c=this.hitTest(a),this.fire("click",c,this.data[c].src,a,b)},c.prototype.onHoverMove=function(a){var b;return b=this.hitTest(a),this.displayHoverForRow(b)},c.prototype.onHoverOut=function(){return this.options.hideHover!==!1?this.displayHoverForRow(null):void 0},c.prototype.displayHoverForRow=function(a){var b;return null!=a?((b=this.hover).update.apply(b,this.hoverContentForRow(a)),this.hilight(a)):(this.hover.hide(),this.hilight())},c.prototype.hoverContentForRow=function(a){var b,c,d,e,f,g,h;for(d=this.data[a],b="<div class='morris-hover-row-label'>"+d.label+"</div>",h=d.y,c=f=0,g=h.length;g>f;c=++f)e=h[c],b+="<div class='morris-hover-point' style='color: "+this.colorFor(d,c,"label")+"'>\n  "+this.options.labels[c]+":\n  "+this.yLabelFormat(e)+"\n</div>";return"function"==typeof this.options.hoverCallback&&(b=this.options.hoverCallback(a,this.options,b,d.src)),[b,d._x,d._ymax]},c.prototype.generatePaths=function(){var a,c,d,e;return this.paths=function(){var f,g,h,j;for(j=[],c=f=0,g=this.options.ykeys.length;g>=0?g>f:f>g;c=g>=0?++f:--f)e="boolean"==typeof this.options.smooth?this.options.smooth:(h=this.options.ykeys[c],i.call(this.options.smooth,h)>=0),a=function(){var a,b,e,f;for(e=this.data,f=[],a=0,b=e.length;b>a;a++)d=e[a],void 0!==d._y[c]&&f.push({x:d._x,y:d._y[c]});return f}.call(this),a.length>1?j.push(b.Line.createPath(a,e,this.bottom)):j.push(null);return j}.call(this)},c.prototype.draw=function(){var a;return((a=this.options.axes)===!0||"both"===a||"x"===a)&&this.drawXAxis(),this.drawSeries(),this.options.hideHover===!1?this.displayHoverForRow(this.data.length-1):void 0},c.prototype.drawXAxis=function(){var a,c,d,e,f,g,h,i,j,k,l=this;for(h=this.bottom+this.options.padding/2,f=null,e=null,a=function(a,b){var c,d,g,i,j;return c=l.drawXAxisLabel(l.transX(b),h,a),j=c.getBBox(),c.transform("r"+-l.options.xLabelAngle),d=c.getBBox(),c.transform("t0,"+d.height/2+"..."),0!==l.options.xLabelAngle&&(i=-.5*j.width*Math.cos(l.options.xLabelAngle*Math.PI/180),c.transform("t"+i+",0...")),d=c.getBBox(),(null==f||f>=d.x+d.width||null!=e&&e>=d.x)&&d.x>=0&&d.x+d.width<l.el.width()?(0!==l.options.xLabelAngle&&(g=1.25*l.options.gridTextSize/Math.sin(l.options.xLabelAngle*Math.PI/180),e=d.x-g),f=d.x-l.options.xLabelMargin):c.remove()},d=this.options.parseTime?1===this.data.length&&"auto"===this.options.xLabels?[[this.data[0].label,this.data[0].x]]:b.labelSeries(this.xmin,this.xmax,this.width,this.options.xLabels,this.options.xLabelFormat):function(){var a,b,c,d;for(c=this.data,d=[],a=0,b=c.length;b>a;a++)g=c[a],d.push([g.label,g.x]);return d}.call(this),d.reverse(),k=[],i=0,j=d.length;j>i;i++)c=d[i],k.push(a(c[0],c[1]));return k},c.prototype.drawSeries=function(){var a,b,c,d,e,f;for(this.seriesPoints=[],a=b=d=this.options.ykeys.length-1;0>=d?0>=b:b>=0;a=0>=d?++b:--b)this._drawLineFor(a);for(f=[],a=c=e=this.options.ykeys.length-1;0>=e?0>=c:c>=0;a=0>=e?++c:--c)f.push(this._drawPointFor(a));return f},c.prototype._drawPointFor=function(a){var b,c,d,e,f,g;for(this.seriesPoints[a]=[],f=this.data,g=[],d=0,e=f.length;e>d;d++)c=f[d],b=null,null!=c._y[a]&&(b=this.drawLinePoint(c._x,c._y[a],this.colorFor(c,a,"point"),a)),g.push(this.seriesPoints[a].push(b));return g},c.prototype._drawLineFor=function(a){var b;return b=this.paths[a],null!==b?this.drawLinePath(b,this.colorFor(null,a,"line"),a):void 0},c.createPath=function(a,c,d){var e,f,g,h,i,j,k,l,m,n,o,p,q,r;for(k="",c&&(g=b.Line.gradients(a)),l={y:null},h=q=0,r=a.length;r>q;h=++q)e=a[h],null!=e.y&&(null!=l.y?c?(f=g[h],j=g[h-1],i=(e.x-l.x)/4,m=l.x+i,o=Math.min(d,l.y+i*j),n=e.x-i,p=Math.min(d,e.y-i*f),k+="C"+m+","+o+","+n+","+p+","+e.x+","+e.y):k+="L"+e.x+","+e.y:c&&null==g[h]||(k+="M"+e.x+","+e.y)),l=e;return k},c.gradients=function(a){var b,c,d,e,f,g,h,i;for(c=function(a,b){return(a.y-b.y)/(a.x-b.x)},i=[],d=g=0,h=a.length;h>g;d=++g)b=a[d],null!=b.y?(e=a[d+1]||{y:null},f=a[d-1]||{y:null},null!=f.y&&null!=e.y?i.push(c(f,e)):null!=f.y?i.push(c(f,b)):null!=e.y?i.push(c(b,e)):i.push(null)):i.push(null);return i},c.prototype.hilight=function(a){var b,c,d,e,f;if(null!==this.prevHilight&&this.prevHilight!==a)for(b=c=0,e=this.seriesPoints.length-1;e>=0?e>=c:c>=e;b=e>=0?++c:--c)this.seriesPoints[b][this.prevHilight]&&this.seriesPoints[b][this.prevHilight].animate(this.pointShrinkSeries(b));if(null!==a&&this.prevHilight!==a)for(b=d=0,f=this.seriesPoints.length-1;f>=0?f>=d:d>=f;b=f>=0?++d:--d)this.seriesPoints[b][a]&&this.seriesPoints[b][a].animate(this.pointGrowSeries(b));return this.prevHilight=a},c.prototype.colorFor=function(a,b,c){return"function"==typeof this.options.lineColors?this.options.lineColors.call(this,a,b,c):"point"===c?this.options.pointFillColors[b%this.options.pointFillColors.length]||this.options.lineColors[b%this.options.lineColors.length]:this.options.lineColors[b%this.options.lineColors.length]},c.prototype.drawXAxisLabel=function(a,b,c){return this.raphael.text(a,b,c).attr("font-size",this.options.gridTextSize).attr("font-family",this.options.gridTextFamily).attr("font-weight",this.options.gridTextWeight).attr("fill",this.options.gridTextColor)},c.prototype.drawLinePath=function(a,b,c){return this.raphael.path(a).attr("stroke",b).attr("stroke-width",this.lineWidthForSeries(c))},c.prototype.drawLinePoint=function(a,b,c,d){return this.raphael.circle(a,b,this.pointSizeForSeries(d)).attr("fill",c).attr("stroke-width",this.pointStrokeWidthForSeries(d)).attr("stroke",this.pointStrokeColorForSeries(d))},c.prototype.pointStrokeWidthForSeries=function(a){return this.options.pointStrokeWidths[a%this.options.pointStrokeWidths.length]},c.prototype.pointStrokeColorForSeries=function(a){return this.options.pointStrokeColors[a%this.options.pointStrokeColors.length]},c.prototype.lineWidthForSeries=function(a){return this.options.lineWidth instanceof Array?this.options.lineWidth[a%this.options.lineWidth.length]:this.options.lineWidth},c.prototype.pointSizeForSeries=function(a){return this.options.pointSize instanceof Array?this.options.pointSize[a%this.options.pointSize.length]:this.options.pointSize},c.prototype.pointGrowSeries=function(a){return Raphael.animation({r:this.pointSizeForSeries(a)+3},25,"linear")},c.prototype.pointShrinkSeries=function(a){return Raphael.animation({r:this.pointSizeForSeries(a)},25,"linear")},c}(b.Grid),b.labelSeries=function(c,d,e,f,g){var h,i,j,k,l,m,n,o,p,q,r;if(j=200*(d-c)/e,i=new Date(c),n=b.LABEL_SPECS[f],void 0===n)for(r=b.AUTO_LABEL_ORDER,p=0,q=r.length;q>p;p++)if(k=r[p],m=b.LABEL_SPECS[k],j>=m.span){n=m;break}for(void 0===n&&(n=b.LABEL_SPECS.second),g&&(n=a.extend({},n,{fmt:g})),h=n.start(i),l=[];(o=h.getTime())<=d;)o>=c&&l.push([n.fmt(h),o]),n.incr(h);return l},c=function(a){return{span:60*a*1e3,start:function(a){return new Date(a.getFullYear(),a.getMonth(),a.getDate(),a.getHours())},fmt:function(a){return""+b.pad2(a.getHours())+":"+b.pad2(a.getMinutes())},incr:function(b){return b.setUTCMinutes(b.getUTCMinutes()+a)}}},d=function(a){return{span:1e3*a,start:function(a){return new Date(a.getFullYear(),a.getMonth(),a.getDate(),a.getHours(),a.getMinutes())},fmt:function(a){return""+b.pad2(a.getHours())+":"+b.pad2(a.getMinutes())+":"+b.pad2(a.getSeconds())},incr:function(b){return b.setUTCSeconds(b.getUTCSeconds()+a)}}},b.LABEL_SPECS={decade:{span:1728e8,start:function(a){return new Date(a.getFullYear()-a.getFullYear()%10,0,1)},fmt:function(a){return""+a.getFullYear()},incr:function(a){return a.setFullYear(a.getFullYear()+10)}},year:{span:1728e7,start:function(a){return new Date(a.getFullYear(),0,1)},fmt:function(a){return""+a.getFullYear()},incr:function(a){return a.setFullYear(a.getFullYear()+1)}},month:{span:24192e5,start:function(a){return new Date(a.getFullYear(),a.getMonth(),1)},fmt:function(a){return""+a.getFullYear()+"-"+b.pad2(a.getMonth()+1)},incr:function(a){return a.setMonth(a.getMonth()+1)}},week:{span:6048e5,start:function(a){return new Date(a.getFullYear(),a.getMonth(),a.getDate())},fmt:function(a){return""+a.getFullYear()+"-"+b.pad2(a.getMonth()+1)+"-"+b.pad2(a.getDate())},incr:function(a){return a.setDate(a.getDate()+7)}},day:{span:864e5,start:function(a){return new Date(a.getFullYear(),a.getMonth(),a.getDate())},fmt:function(a){return""+a.getFullYear()+"-"+b.pad2(a.getMonth()+1)+"-"+b.pad2(a.getDate())},incr:function(a){return a.setDate(a.getDate()+1)}},hour:c(60),"30min":c(30),"15min":c(15),"10min":c(10),"5min":c(5),minute:c(1),"30sec":d(30),"15sec":d(15),"10sec":d(10),"5sec":d(5),second:d(1)},b.AUTO_LABEL_ORDER=["decade","year","month","week","day","hour","30min","15min","10min","5min","minute","30sec","15sec","10sec","5sec","second"],b.Area=function(c){function d(c){var f;return this instanceof b.Area?(f=a.extend({},e,c),this.cumulative=!f.behaveLikeLine,"auto"===f.fillOpacity&&(f.fillOpacity=f.behaveLikeLine?.8:1),d.__super__.constructor.call(this,f),void 0):new b.Area(c)}var e;return h(d,c),e={fillOpacity:"auto",behaveLikeLine:!1},d.prototype.calcPoints=function(){var a,b,c,d,e,f,g;for(f=this.data,g=[],d=0,e=f.length;e>d;d++)a=f[d],a._x=this.transX(a.x),b=0,a._y=function(){var d,e,f,g;for(f=a.y,g=[],d=0,e=f.length;e>d;d++)c=f[d],this.options.behaveLikeLine?g.push(this.transY(c)):(b+=c||0,g.push(this.transY(b)));return g}.call(this),g.push(a._ymax=Math.max.apply(Math,a._y));return g},d.prototype.drawSeries=function(){var a,b,c,d,e,f,g,h;for(this.seriesPoints=[],b=this.options.behaveLikeLine?function(){f=[];for(var a=0,b=this.options.ykeys.length-1;b>=0?b>=a:a>=b;b>=0?a++:a--)f.push(a);return f}.apply(this):function(){g=[];for(var a=e=this.options.ykeys.length-1;0>=e?0>=a:a>=0;0>=e?a++:a--)g.push(a);return g}.apply(this),h=[],c=0,d=b.length;d>c;c++)a=b[c],this._drawFillFor(a),this._drawLineFor(a),h.push(this._drawPointFor(a));return h},d.prototype._drawFillFor=function(a){var b;return b=this.paths[a],null!==b?(b+="L"+this.transX(this.xmax)+","+this.bottom+"L"+this.transX(this.xmin)+","+this.bottom+"Z",this.drawFilledPath(b,this.fillForSeries(a))):void 0},d.prototype.fillForSeries=function(a){var b;return b=Raphael.rgb2hsl(this.colorFor(this.data[a],a,"line")),Raphael.hsl(b.h,this.options.behaveLikeLine?.9*b.s:.75*b.s,Math.min(.98,this.options.behaveLikeLine?1.2*b.l:1.25*b.l))},d.prototype.drawFilledPath=function(a,b){return this.raphael.path(a).attr("fill",b).attr("fill-opacity",this.options.fillOpacity).attr("stroke","none")},d}(b.Line),b.Bar=function(c){function d(c){return this.onHoverOut=f(this.onHoverOut,this),this.onHoverMove=f(this.onHoverMove,this),this.onGridClick=f(this.onGridClick,this),this instanceof b.Bar?(d.__super__.constructor.call(this,a.extend({},c,{parseTime:!1})),void 0):new b.Bar(c)}return h(d,c),d.prototype.init=function(){return this.cumulative=this.options.stacked,"always"!==this.options.hideHover?(this.hover=new b.Hover({parent:this.el}),this.on("hovermove",this.onHoverMove),this.on("hoverout",this.onHoverOut),this.on("gridclick",this.onGridClick)):void 0},d.prototype.defaults={barSizeRatio:.75,barGap:3,barColors:["#0b62a4","#7a92a3","#4da74d","#afd8f8","#edc240","#cb4b4b","#9440ed"],barOpacity:1,barRadius:[0,0,0,0],xLabelMargin:50},d.prototype.calc=function(){var a;return this.calcBars(),this.options.hideHover===!1?(a=this.hover).update.apply(a,this.hoverContentForRow(this.data.length-1)):void 0},d.prototype.calcBars=function(){var a,b,c,d,e,f,g;for(f=this.data,g=[],a=d=0,e=f.length;e>d;a=++d)b=f[a],b._x=this.left+this.width*(a+.5)/this.data.length,g.push(b._y=function(){var a,d,e,f;for(e=b.y,f=[],a=0,d=e.length;d>a;a++)c=e[a],null!=c?f.push(this.transY(c)):f.push(null);return f}.call(this));return g},d.prototype.draw=function(){var a;return((a=this.options.axes)===!0||"both"===a||"x"===a)&&this.drawXAxis(),this.drawSeries()},d.prototype.drawXAxis=function(){var a,b,c,d,e,f,g,h,i,j,k,l,m;for(j=this.bottom+(this.options.xAxisLabelTopPadding||this.options.padding/2),g=null,f=null,m=[],a=k=0,l=this.data.length;l>=0?l>k:k>l;a=l>=0?++k:--k)h=this.data[this.data.length-1-a],b=this.drawXAxisLabel(h._x,j,h.label),i=b.getBBox(),b.transform("r"+-this.options.xLabelAngle),c=b.getBBox(),b.transform("t0,"+c.height/2+"..."),0!==this.options.xLabelAngle&&(e=-.5*i.width*Math.cos(this.options.xLabelAngle*Math.PI/180),b.transform("t"+e+",0...")),(null==g||g>=c.x+c.width||null!=f&&f>=c.x)&&c.x>=0&&c.x+c.width<this.el.width()?(0!==this.options.xLabelAngle&&(d=1.25*this.options.gridTextSize/Math.sin(this.options.xLabelAngle*Math.PI/180),f=c.x-d),m.push(g=c.x-this.options.xLabelMargin)):m.push(b.remove());return m},d.prototype.drawSeries=function(){var a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;return c=this.width/this.options.data.length,h=this.options.stacked?1:this.options.ykeys.length,a=(c*this.options.barSizeRatio-this.options.barGap*(h-1))/h,this.options.barSize&&(a=Math.min(a,this.options.barSize)),l=c-a*h-this.options.barGap*(h-1),g=l/2,o=this.ymin<=0&&this.ymax>=0?this.transY(0):null,this.bars=function(){var h,l,p,q;for(p=this.data,q=[],d=h=0,l=p.length;l>h;d=++h)i=p[d],e=0,q.push(function(){var h,l,p,q;for(p=i._y,q=[],j=h=0,l=p.length;l>h;j=++h)n=p[j],null!==n?(o?(m=Math.min(n,o),b=Math.max(n,o)):(m=n,b=this.bottom),f=this.left+d*c+g,this.options.stacked||(f+=j*(a+this.options.barGap)),k=b-m,this.options.verticalGridCondition&&this.options.verticalGridCondition(i.x)&&this.drawBar(this.left+d*c,this.top,c,Math.abs(this.top-this.bottom),this.options.verticalGridColor,this.options.verticalGridOpacity,this.options.barRadius),this.options.stacked&&(m-=e),this.drawBar(f,m,a,k,this.colorFor(i,j,"bar"),this.options.barOpacity,this.options.barRadius),q.push(e+=k)):q.push(null);return q}.call(this));return q}.call(this)},d.prototype.colorFor=function(a,b,c){var d,e;return"function"==typeof this.options.barColors?(d={x:a.x,y:a.y[b],label:a.label},e={index:b,key:this.options.ykeys[b],label:this.options.labels[b]},this.options.barColors.call(this,d,e,c)):this.options.barColors[b%this.options.barColors.length]},d.prototype.hitTest=function(a){return 0===this.data.length?null:(a=Math.max(Math.min(a,this.right),this.left),Math.min(this.data.length-1,Math.floor((a-this.left)/(this.width/this.data.length))))},d.prototype.onGridClick=function(a,b){var c;return c=this.hitTest(a),this.fire("click",c,this.data[c].src,a,b)},d.prototype.onHoverMove=function(a){var b,c;return b=this.hitTest(a),(c=this.hover).update.apply(c,this.hoverContentForRow(b))},d.prototype.onHoverOut=function(){return this.options.hideHover!==!1?this.hover.hide():void 0},d.prototype.hoverContentForRow=function(a){var b,c,d,e,f,g,h,i;for(d=this.data[a],b="<div class='morris-hover-row-label'>"+d.label+"</div>",i=d.y,c=g=0,h=i.length;h>g;c=++g)f=i[c],b+="<div class='morris-hover-point' style='color: "+this.colorFor(d,c,"label")+"'>\n  "+this.options.labels[c]+":\n  "+this.yLabelFormat(f)+"\n</div>";return"function"==typeof this.options.hoverCallback&&(b=this.options.hoverCallback(a,this.options,b,d.src)),e=this.left+(a+.5)*this.width/this.data.length,[b,e]},d.prototype.drawXAxisLabel=function(a,b,c){var d;return d=this.raphael.text(a,b,c).attr("font-size",this.options.gridTextSize).attr("font-family",this.options.gridTextFamily).attr("font-weight",this.options.gridTextWeight).attr("fill",this.options.gridTextColor)},d.prototype.drawBar=function(a,b,c,d,e,f,g){var h,i;return h=Math.max.apply(Math,g),i=0===h||h>d?this.raphael.rect(a,b,c,d):this.raphael.path(this.roundedRect(a,b,c,d,g)),i.attr("fill",e).attr("fill-opacity",f).attr("stroke","none")},d.prototype.roundedRect=function(a,b,c,d,e){return null==e&&(e=[0,0,0,0]),["M",a,e[0]+b,"Q",a,b,a+e[0],b,"L",a+c-e[1],b,"Q",a+c,b,a+c,b+e[1],"L",a+c,b+d-e[2],"Q",a+c,b+d,a+c-e[2],b+d,"L",a+e[3],b+d,"Q",a,b+d,a,b+d-e[3],"Z"]},d}(b.Grid),b.Donut=function(c){function d(c){this.resizeHandler=f(this.resizeHandler,this),this.select=f(this.select,this),this.click=f(this.click,this);var d=this;if(!(this instanceof b.Donut))return new b.Donut(c);if(this.options=a.extend({},this.defaults,c),this.el="string"==typeof c.element?a(document.getElementById(c.element)):a(c.element),null===this.el||0===this.el.length)throw new Error("Graph placeholder not found.");void 0!==c.data&&0!==c.data.length&&(this.raphael=new Raphael(this.el[0]),this.options.resize&&a(window).bind("resize",function(){return null!=d.timeoutId&&window.clearTimeout(d.timeoutId),d.timeoutId=window.setTimeout(d.resizeHandler,100)}),this.setData(c.data))}return h(d,c),d.prototype.defaults={colors:["#0B62A4","#3980B5","#679DC6","#95BBD7","#B0CCE1","#095791","#095085","#083E67","#052C48","#042135"],backgroundColor:"#FFFFFF",labelColor:"#000000",formatter:b.commas,resize:!1},d.prototype.redraw=function(){var a,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x;for(this.raphael.clear(),c=this.el.width()/2,d=this.el.height()/2,n=(Math.min(c,d)-10)/3,l=0,u=this.values,o=0,r=u.length;r>o;o++)m=u[o],l+=m;for(i=5/(2*n),a=1.9999*Math.PI-i*this.data.length,g=0,f=0,this.segments=[],v=this.values,e=p=0,s=v.length;s>p;e=++p)m=v[e],j=g+i+a*(m/l),k=new b.DonutSegment(c,d,2*n,n,g,j,this.data[e].color||this.options.colors[f%this.options.colors.length],this.options.backgroundColor,f,this.raphael),k.render(),this.segments.push(k),k.on("hover",this.select),k.on("click",this.click),g=j,f+=1;for(this.text1=this.drawEmptyDonutLabel(c,d-10,this.options.labelColor,15,800),this.text2=this.drawEmptyDonutLabel(c,d+10,this.options.labelColor,14),h=Math.max.apply(Math,this.values),f=0,w=this.values,x=[],q=0,t=w.length;t>q;q++){if(m=w[q],m===h){this.select(f);
-break}x.push(f+=1)}return x},d.prototype.setData=function(a){var b;return this.data=a,this.values=function(){var a,c,d,e;for(d=this.data,e=[],a=0,c=d.length;c>a;a++)b=d[a],e.push(parseFloat(b.value));return e}.call(this),this.redraw()},d.prototype.click=function(a){return this.fire("click",a,this.data[a])},d.prototype.select=function(a){var b,c,d,e,f,g;for(g=this.segments,e=0,f=g.length;f>e;e++)c=g[e],c.deselect();return d=this.segments[a],d.select(),b=this.data[a],this.setLabels(b.label,this.options.formatter(b.value,b))},d.prototype.setLabels=function(a,b){var c,d,e,f,g,h,i,j;return c=2*(Math.min(this.el.width()/2,this.el.height()/2)-10)/3,f=1.8*c,e=c/2,d=c/3,this.text1.attr({text:a,transform:""}),g=this.text1.getBBox(),h=Math.min(f/g.width,e/g.height),this.text1.attr({transform:"S"+h+","+h+","+(g.x+g.width/2)+","+(g.y+g.height)}),this.text2.attr({text:b,transform:""}),i=this.text2.getBBox(),j=Math.min(f/i.width,d/i.height),this.text2.attr({transform:"S"+j+","+j+","+(i.x+i.width/2)+","+i.y})},d.prototype.drawEmptyDonutLabel=function(a,b,c,d,e){var f;return f=this.raphael.text(a,b,"").attr("font-size",d).attr("fill",c),null!=e&&f.attr("font-weight",e),f},d.prototype.resizeHandler=function(){return this.timeoutId=null,this.raphael.setSize(this.el.width(),this.el.height()),this.redraw()},d}(b.EventEmitter),b.DonutSegment=function(a){function b(a,b,c,d,e,g,h,i,j,k){this.cx=a,this.cy=b,this.inner=c,this.outer=d,this.color=h,this.backgroundColor=i,this.index=j,this.raphael=k,this.deselect=f(this.deselect,this),this.select=f(this.select,this),this.sin_p0=Math.sin(e),this.cos_p0=Math.cos(e),this.sin_p1=Math.sin(g),this.cos_p1=Math.cos(g),this.is_long=g-e>Math.PI?1:0,this.path=this.calcSegment(this.inner+3,this.inner+this.outer-5),this.selectedPath=this.calcSegment(this.inner+3,this.inner+this.outer),this.hilight=this.calcArc(this.inner)}return h(b,a),b.prototype.calcArcPoints=function(a){return[this.cx+a*this.sin_p0,this.cy+a*this.cos_p0,this.cx+a*this.sin_p1,this.cy+a*this.cos_p1]},b.prototype.calcSegment=function(a,b){var c,d,e,f,g,h,i,j,k,l;return k=this.calcArcPoints(a),c=k[0],e=k[1],d=k[2],f=k[3],l=this.calcArcPoints(b),g=l[0],i=l[1],h=l[2],j=l[3],"M"+c+","+e+("A"+a+","+a+",0,"+this.is_long+",0,"+d+","+f)+("L"+h+","+j)+("A"+b+","+b+",0,"+this.is_long+",1,"+g+","+i)+"Z"},b.prototype.calcArc=function(a){var b,c,d,e,f;return f=this.calcArcPoints(a),b=f[0],d=f[1],c=f[2],e=f[3],"M"+b+","+d+("A"+a+","+a+",0,"+this.is_long+",0,"+c+","+e)},b.prototype.render=function(){var a=this;return this.arc=this.drawDonutArc(this.hilight,this.color),this.seg=this.drawDonutSegment(this.path,this.color,this.backgroundColor,function(){return a.fire("hover",a.index)},function(){return a.fire("click",a.index)})},b.prototype.drawDonutArc=function(a,b){return this.raphael.path(a).attr({stroke:b,"stroke-width":2,opacity:0})},b.prototype.drawDonutSegment=function(a,b,c,d,e){return this.raphael.path(a).attr({fill:b,stroke:c,"stroke-width":3}).hover(d).click(e)},b.prototype.select=function(){return this.selected?void 0:(this.seg.animate({path:this.selectedPath},150,"<>"),this.arc.animate({opacity:1},150,"<>"),this.selected=!0)},b.prototype.deselect=function(){return this.selected?(this.seg.animate({path:this.path},150,"<>"),this.arc.animate({opacity:0},150,"<>"),this.selected=!1):void 0},b}(b.EventEmitter)}).call(this);
\ No newline at end of file
+break}x.push(f+=1)}return x},d.prototype.setData=function(a){var b;return this.data=a,this.values=function(){var a,c,d,e;for(d=this.data,e=[],a=0,c=d.length;c>a;a++)b=d[a],e.push(parseFloat(b.value));return e}.call(this),this.redraw()},d.prototype.click=function(a){return this.fire("click",a,this.data[a])},d.prototype.select=function(a){var b,c,d,e,f,g;for(g=this.segments,e=0,f=g.length;f>e;e++)c=g[e],c.deselect();return d=this.segments[a],d.select(),b=this.data[a],this.setLabels(b.label,this.options.formatter(b.value,b))},d.prototype.setLabels=function(a,b){var c,d,e,f,g,h,i,j;return c=2*(Math.min(this.el.width()/2,this.el.height()/2)-10)/3,f=1.8*c,e=c/2,d=c/3,this.text1.attr({text:a,transform:""}),g=this.text1.getBBox(),h=Math.min(f/g.width,e/g.height),this.text1.attr({transform:"S"+h+","+h+","+(g.x+g.width/2)+","+(g.y+g.height)}),this.text2.attr({text:b,transform:""}),i=this.text2.getBBox(),j=Math.min(f/i.width,d/i.height),this.text2.attr({transform:"S"+j+","+j+","+(i.x+i.width/2)+","+i.y})},d.prototype.drawEmptyDonutLabel=function(a,b,c,d,e){var f;return f=this.raphael.text(a,b,"").attr("font-size",d).attr("fill",c),null!=e&&f.attr("font-weight",e),f},d.prototype.resizeHandler=function(){return this.timeoutId=null,this.raphael.setSize(this.el.width(),this.el.height()),this.redraw()},d}(b.EventEmitter),b.DonutSegment=function(a){function b(a,b,c,d,e,g,h,i,j,k){this.cx=a,this.cy=b,this.inner=c,this.outer=d,this.color=h,this.backgroundColor=i,this.index=j,this.raphael=k,this.deselect=f(this.deselect,this),this.select=f(this.select,this),this.sin_p0=Math.sin(e),this.cos_p0=Math.cos(e),this.sin_p1=Math.sin(g),this.cos_p1=Math.cos(g),this.is_long=g-e>Math.PI?1:0,this.path=this.calcSegment(this.inner+3,this.inner+this.outer-5),this.selectedPath=this.calcSegment(this.inner+3,this.inner+this.outer),this.hilight=this.calcArc(this.inner)}return h(b,a),b.prototype.calcArcPoints=function(a){return[this.cx+a*this.sin_p0,this.cy+a*this.cos_p0,this.cx+a*this.sin_p1,this.cy+a*this.cos_p1]},b.prototype.calcSegment=function(a,b){var c,d,e,f,g,h,i,j,k,l;return k=this.calcArcPoints(a),c=k[0],e=k[1],d=k[2],f=k[3],l=this.calcArcPoints(b),g=l[0],i=l[1],h=l[2],j=l[3],"M"+c+","+e+("A"+a+","+a+",0,"+this.is_long+",0,"+d+","+f)+("L"+h+","+j)+("A"+b+","+b+",0,"+this.is_long+",1,"+g+","+i)+"Z"},b.prototype.calcArc=function(a){var b,c,d,e,f;return f=this.calcArcPoints(a),b=f[0],d=f[1],c=f[2],e=f[3],"M"+b+","+d+("A"+a+","+a+",0,"+this.is_long+",0,"+c+","+e)},b.prototype.render=function(){var a=this;return this.arc=this.drawDonutArc(this.hilight,this.color),this.seg=this.drawDonutSegment(this.path,this.color,this.backgroundColor,function(){return a.fire("hover",a.index)},function(){return a.fire("click",a.index)})},b.prototype.drawDonutArc=function(a,b){return this.raphael.path(a).attr({stroke:b,"stroke-width":2,opacity:0})},b.prototype.drawDonutSegment=function(a,b,c,d,e){return this.raphael.path(a).attr({fill:b,stroke:c,"stroke-width":3}).hover(d).click(e)},b.prototype.select=function(){return this.selected?void 0:(this.seg.animate({path:this.selectedPath},150,"<>"),this.arc.animate({opacity:1},150,"<>"),this.selected=!0)},b.prototype.deselect=function(){return this.selected?(this.seg.animate({path:this.path},150,"<>"),this.arc.animate({opacity:0},150,"<>"),this.selected=!1):void 0},b}(b.EventEmitter)}).call(this);
diff --git a/web/lib/pako-1.0.6.min.js b/web/gui/lib/pako-1.0.6.min.js
index 73024f7a6..165fc265a 100644
--- a/web/lib/pako-1.0.6.min.js
+++ b/web/gui/lib/pako-1.0.6.min.js
@@ -1 +1,2 @@
+// SPDX-License-Identifier: MIT
 !function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).pako=t()}}(function(){return function t(e,a,i){function n(s,o){if(!a[s]){if(!e[s]){var l="function"==typeof require&&require;if(!o&&l)return l(s,!0);if(r)return r(s,!0);var h=new Error("Cannot find module '"+s+"'");throw h.code="MODULE_NOT_FOUND",h}var d=a[s]={exports:{}};e[s][0].call(d.exports,function(t){var a=e[s][1][t];return n(a||t)},d,d.exports,t,e,a,i)}return a[s].exports}for(var r="function"==typeof require&&require,s=0;s<i.length;s++)n(i[s]);return n}({1:[function(t,e,a){"use strict";function i(t){if(!(this instanceof i))return new i(t);this.options=s.assign({level:_,method:c,chunkSize:16384,windowBits:15,memLevel:8,strategy:u,to:""},t||{});var e=this.options;e.raw&&e.windowBits>0?e.windowBits=-e.windowBits:e.gzip&&e.windowBits>0&&e.windowBits<16&&(e.windowBits+=16),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new h,this.strm.avail_out=0;var a=r.deflateInit2(this.strm,e.level,e.method,e.windowBits,e.memLevel,e.strategy);if(a!==f)throw new Error(l[a]);if(e.header&&r.deflateSetHeader(this.strm,e.header),e.dictionary){var n;if(n="string"==typeof e.dictionary?o.string2buf(e.dictionary):"[object ArrayBuffer]"===d.call(e.dictionary)?new Uint8Array(e.dictionary):e.dictionary,(a=r.deflateSetDictionary(this.strm,n))!==f)throw new Error(l[a]);this._dict_set=!0}}function n(t,e){var a=new i(e);if(a.push(t,!0),a.err)throw a.msg||l[a.err];return a.result}var r=t("./zlib/deflate"),s=t("./utils/common"),o=t("./utils/strings"),l=t("./zlib/messages"),h=t("./zlib/zstream"),d=Object.prototype.toString,f=0,_=-1,u=0,c=8;i.prototype.push=function(t,e){var a,i,n=this.strm,l=this.options.chunkSize;if(this.ended)return!1;i=e===~~e?e:!0===e?4:0,"string"==typeof t?n.input=o.string2buf(t):"[object ArrayBuffer]"===d.call(t)?n.input=new Uint8Array(t):n.input=t,n.next_in=0,n.avail_in=n.input.length;do{if(0===n.avail_out&&(n.output=new s.Buf8(l),n.next_out=0,n.avail_out=l),1!==(a=r.deflate(n,i))&&a!==f)return this.onEnd(a),this.ended=!0,!1;0!==n.avail_out&&(0!==n.avail_in||4!==i&&2!==i)||("string"===this.options.to?this.onData(o.buf2binstring(s.shrinkBuf(n.output,n.next_out))):this.onData(s.shrinkBuf(n.output,n.next_out)))}while((n.avail_in>0||0===n.avail_out)&&1!==a);return 4===i?(a=r.deflateEnd(this.strm),this.onEnd(a),this.ended=!0,a===f):2!==i||(this.onEnd(f),n.avail_out=0,!0)},i.prototype.onData=function(t){this.chunks.push(t)},i.prototype.onEnd=function(t){t===f&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=s.flattenChunks(this.chunks)),this.chunks=[],this.err=t,this.msg=this.strm.msg},a.Deflate=i,a.deflate=n,a.deflateRaw=function(t,e){return e=e||{},e.raw=!0,n(t,e)},a.gzip=function(t,e){return e=e||{},e.gzip=!0,n(t,e)}},{"./utils/common":3,"./utils/strings":4,"./zlib/deflate":8,"./zlib/messages":13,"./zlib/zstream":15}],2:[function(t,e,a){"use strict";function i(t){if(!(this instanceof i))return new i(t);this.options=s.assign({chunkSize:16384,windowBits:0,to:""},t||{});var 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o.status=ht;if(o.status===ht&&(o.gzhead.hcrc?(o.pending+2>o.pending_buf_size&&s(t),o.pending+2<=o.pending_buf_size&&(l(o,255&t.adler),l(o,t.adler>>8&255),t.adler=0,o.status=dt)):o.status=dt),0!==o.pending){if(s(t),0===t.avail_out)return o.last_flush=-1,D}else if(0===t.avail_in&&n(e)<=n(a)&&e!==N)return i(t,F);if(o.status===ft&&0!==t.avail_in)return i(t,F);if(0!==t.avail_in||0!==o.lookahead||e!==Z&&o.status!==ft){var u=o.strategy===j?g(o,e):o.strategy===K?b(o,e):x[o.level].func(o,e);if(u!==ct&&u!==bt||(o.status=ft),u===_t||u===ct)return 0===t.avail_out&&(o.last_flush=-1),D;if(u===ut&&(e===R?B._tr_align(o):e!==O&&(B._tr_stored_block(o,0,0,!1),e===C&&(r(o.head),0===o.lookahead&&(o.strstart=0,o.block_start=0,o.insert=0))),s(t),0===t.avail_out))return o.last_flush=-1,D}return e!==N?D:o.wrap<=0?I:(2===o.wrap?(l(o,255&t.adler),l(o,t.adler>>8&255),l(o,t.adler>>16&255),l(o,t.adler>>24&255),l(o,255&t.total_in),l(o,t.total_in>>8&255),l(o,t.total_in>>16&255),l(o,t.total_in>>24&255)):(h(o,t.adler>>>16),h(o,65535&t.adler)),s(t),o.wrap>0&&(o.wrap=-o.wrap),0!==o.pending?D:I)},a.deflateEnd=function(t){var e;return t&&t.state?(e=t.state.status)!==rt&&e!==st&&e!==ot&&e!==lt&&e!==ht&&e!==dt&&e!==ft?i(t,U):(t.state=null,e===dt?i(t,T):D):U},a.deflateSetDictionary=function(t,e){var a,i,n,s,o,l,h,d,f=e.length;if(!t||!t.state)return U;if(a=t.state,2===(s=a.wrap)||1===s&&a.status!==rt||a.lookahead)return U;for(1===s&&(t.adler=S(t.adler,e,f,0)),a.wrap=0,f>=a.w_size&&(0===s&&(r(a.head),a.strstart=0,a.block_start=0,a.insert=0),d=new z.Buf8(a.w_size),z.arraySet(d,e,f-a.w_size,a.w_size,0),e=d,f=a.w_size),o=t.avail_in,l=t.next_in,h=t.input,t.avail_in=f,t.next_in=0,t.input=e,_(a);a.lookahead>=et;){i=a.strstart,n=a.lookahead-(et-1);do{a.ins_h=(a.ins_h<<a.hash_shift^a.window[i+et-1])&a.hash_mask,a.prev[i&a.w_mask]=a.head[a.ins_h],a.head[a.ins_h]=i,i++}while(--n);a.strstart=i,a.lookahead=et-1,_(a)}return a.strstart+=a.lookahead,a.block_start=a.strstart,a.insert=a.lookahead,a.lookahead=0,a.match_length=a.prev_length=et-1,a.match_available=0,t.next_in=l,t.input=h,t.avail_in=o,a.wrap=s,D},a.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":3,"./adler32":5,"./crc32":7,"./messages":13,"./trees":14}],9:[function(t,e,a){"use strict";e.exports=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1}},{}],10:[function(t,e,a){"use strict";e.exports=function(t,e){var a,i,n,r,s,o,l,h,d,f,_,u,c,b,g,m,w,p,v,k,y,x,z,B,S;a=t.state,i=t.next_in,B=t.input,n=i+(t.avail_in-5),r=t.next_out,S=t.output,s=r-(e-t.avail_out),o=r+(t.avail_out-257),l=a.dmax,h=a.wsize,d=a.whave,f=a.wnext,_=a.window,u=a.hold,c=a.bits,b=a.lencode,g=a.distcode,m=(1<<a.lenbits)-1,w=(1<<a.distbits)-1;t:do{c<15&&(u+=B[i++]<<c,c+=8,u+=B[i++]<<c,c+=8),p=b[u&m];e:for(;;){if(v=p>>>24,u>>>=v,c-=v,0===(v=p>>>16&255))S[r++]=65535&p;else{if(!(16&v)){if(0==(64&v)){p=b[(65535&p)+(u&(1<<v)-1)];continue e}if(32&v){a.mode=12;break t}t.msg="invalid literal/length code",a.mode=30;break t}k=65535&p,(v&=15)&&(c<v&&(u+=B[i++]<<c,c+=8),k+=u&(1<<v)-1,u>>>=v,c-=v),c<15&&(u+=B[i++]<<c,c+=8,u+=B[i++]<<c,c+=8),p=g[u&w];a:for(;;){if(v=p>>>24,u>>>=v,c-=v,!(16&(v=p>>>16&255))){if(0==(64&v)){p=g[(65535&p)+(u&(1<<v)-1)];continue a}t.msg="invalid distance code",a.mode=30;break t}if(y=65535&p,v&=15,c<v&&(u+=B[i++]<<c,(c+=8)<v&&(u+=B[i++]<<c,c+=8)),(y+=u&(1<<v)-1)>l){t.msg="invalid distance too far back",a.mode=30;break 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E;(a=t.state).mode===M&&(a.mode=P),o=t.next_out,r=t.output,f=t.avail_out,s=t.next_in,n=t.input,l=t.avail_in,_=a.hold,dt=a.bits,ft=l,_t=f,xt=z;t:for(;;)switch(a.mode){case N:if(0===a.wrap){a.mode=P;break}for(;dt<16;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if(2&a.wrap&&35615===_){a.check=0,Et[0]=255&_,Et[1]=_>>>8&255,a.check=b(a.check,Et,2,0),_=0,dt=0,a.mode=O;break}if(a.flags=0,a.head&&(a.head.done=!1),!(1&a.wrap)||(((255&_)<<8)+(_>>8))%31){t.msg="incorrect header check",a.mode=ot;break}if((15&_)!==C){t.msg="unknown compression method",a.mode=ot;break}if(_>>>=4,dt-=4,yt=8+(15&_),0===a.wbits)a.wbits=yt;else if(yt>a.wbits){t.msg="invalid window size",a.mode=ot;break}a.dmax=1<<yt,t.adler=a.check=1,a.mode=512&_?j:M,_=0,dt=0;break;case O:for(;dt<16;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if(a.flags=_,(255&a.flags)!==C){t.msg="unknown compression method",a.mode=ot;break}if(57344&a.flags){t.msg="unknown header flags set",a.mode=ot;break}a.head&&(a.head.text=_>>8&1),512&a.flags&&(Et[0]=255&_,Et[1]=_>>>8&255,a.check=b(a.check,Et,2,0)),_=0,dt=0,a.mode=D;case D:for(;dt<32;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}a.head&&(a.head.time=_),512&a.flags&&(Et[0]=255&_,Et[1]=_>>>8&255,Et[2]=_>>>16&255,Et[3]=_>>>24&255,a.check=b(a.check,Et,4,0)),_=0,dt=0,a.mode=I;case I:for(;dt<16;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}a.head&&(a.head.xflags=255&_,a.head.os=_>>8),512&a.flags&&(Et[0]=255&_,Et[1]=_>>>8&255,a.check=b(a.check,Et,2,0)),_=0,dt=0,a.mode=U;case U:if(1024&a.flags){for(;dt<16;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}a.length=_,a.head&&(a.head.extra_len=_),512&a.flags&&(Et[0]=255&_,Et[1]=_>>>8&255,a.check=b(a.check,Et,2,0)),_=0,dt=0}else a.head&&(a.head.extra=null);a.mode=T;case T:if(1024&a.flags&&((ut=a.length)>l&&(ut=l),ut&&(a.head&&(yt=a.head.extra_len-a.length,a.head.extra||(a.head.extra=new Array(a.head.extra_len)),u.arraySet(a.head.extra,n,s,ut,yt)),512&a.flags&&(a.check=b(a.check,n,ut,s)),l-=ut,s+=ut,a.length-=ut),a.length))break t;a.length=0,a.mode=F;case F:if(2048&a.flags){if(0===l)break t;ut=0;do{yt=n[s+ut++],a.head&&yt&&a.length<65536&&(a.head.name+=String.fromCharCode(yt))}while(yt&&ut<l);if(512&a.flags&&(a.check=b(a.check,n,ut,s)),l-=ut,s+=ut,yt)break t}else a.head&&(a.head.name=null);a.length=0,a.mode=L;case L:if(4096&a.flags){if(0===l)break t;ut=0;do{yt=n[s+ut++],a.head&&yt&&a.length<65536&&(a.head.comment+=String.fromCharCode(yt))}while(yt&&ut<l);if(512&a.flags&&(a.check=b(a.check,n,ut,s)),l-=ut,s+=ut,yt)break t}else a.head&&(a.head.comment=null);a.mode=H;case H:if(512&a.flags){for(;dt<16;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if(_!==(65535&a.check)){t.msg="header crc mismatch",a.mode=ot;break}_=0,dt=0}a.head&&(a.head.hcrc=a.flags>>9&1,a.head.done=!0),t.adler=a.check=0,a.mode=M;break;case j:for(;dt<32;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}t.adler=a.check=i(_),_=0,dt=0,a.mode=K;case K:if(0===a.havedict)return t.next_out=o,t.avail_out=f,t.next_in=s,t.avail_in=l,a.hold=_,a.bits=dt,S;t.adler=a.check=1,a.mode=M;case M:if(e===y||e===x)break t;case P:if(a.last){_>>>=7&dt,dt-=7&dt,a.mode=nt;break}for(;dt<3;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}switch(a.last=1&_,_>>>=1,dt-=1,3&_){case 0:a.mode=Y;break;case 1:if(h(a),a.mode=Q,e===x){_>>>=2,dt-=2;break t}break;case 2:a.mode=X;break;case 3:t.msg="invalid block type",a.mode=ot}_>>>=2,dt-=2;break;case Y:for(_>>>=7&dt,dt-=7&dt;dt<32;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if((65535&_)!=(_>>>16^65535)){t.msg="invalid stored block lengths",a.mode=ot;break}if(a.length=65535&_,_=0,dt=0,a.mode=q,e===x)break t;case q:a.mode=G;case G:if(ut=a.length){if(ut>l&&(ut=l),ut>f&&(ut=f),0===ut)break t;u.arraySet(r,n,s,ut,o),l-=ut,s+=ut,f-=ut,o+=ut,a.length-=ut;break}a.mode=M;break;case X:for(;dt<14;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if(a.nlen=257+(31&_),_>>>=5,dt-=5,a.ndist=1+(31&_),_>>>=5,dt-=5,a.ncode=4+(15&_),_>>>=4,dt-=4,a.nlen>286||a.ndist>30){t.msg="too many length or distance symbols",a.mode=ot;break}a.have=0,a.mode=W;case W:for(;a.have<a.ncode;){for(;dt<3;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}a.lens[At[a.have++]]=7&_,_>>>=3,dt-=3}for(;a.have<19;)a.lens[At[a.have++]]=0;if(a.lencode=a.lendyn,a.lenbits=7,zt={bits:a.lenbits},xt=m(w,a.lens,0,19,a.lencode,0,a.work,zt),a.lenbits=zt.bits,xt){t.msg="invalid code lengths set",a.mode=ot;break}a.have=0,a.mode=J;case J:for(;a.have<a.nlen+a.ndist;){for(;St=a.lencode[_&(1<<a.lenbits)-1],gt=St>>>24,mt=St>>>16&255,wt=65535&St,!(gt<=dt);){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if(wt<16)_>>>=gt,dt-=gt,a.lens[a.have++]=wt;else{if(16===wt){for(Bt=gt+2;dt<Bt;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if(_>>>=gt,dt-=gt,0===a.have){t.msg="invalid bit length repeat",a.mode=ot;break}yt=a.lens[a.have-1],ut=3+(3&_),_>>>=2,dt-=2}else if(17===wt){for(Bt=gt+3;dt<Bt;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}dt-=gt,yt=0,ut=3+(7&(_>>>=gt)),_>>>=3,dt-=3}else{for(Bt=gt+7;dt<Bt;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}dt-=gt,yt=0,ut=11+(127&(_>>>=gt)),_>>>=7,dt-=7}if(a.have+ut>a.nlen+a.ndist){t.msg="invalid bit length repeat",a.mode=ot;break}for(;ut--;)a.lens[a.have++]=yt}}if(a.mode===ot)break;if(0===a.lens[256]){t.msg="invalid code -- missing end-of-block",a.mode=ot;break}if(a.lenbits=9,zt={bits:a.lenbits},xt=m(p,a.lens,0,a.nlen,a.lencode,0,a.work,zt),a.lenbits=zt.bits,xt){t.msg="invalid literal/lengths set",a.mode=ot;break}if(a.distbits=6,a.distcode=a.distdyn,zt={bits:a.distbits},xt=m(v,a.lens,a.nlen,a.ndist,a.distcode,0,a.work,zt),a.distbits=zt.bits,xt){t.msg="invalid distances set",a.mode=ot;break}if(a.mode=Q,e===x)break t;case Q:a.mode=V;case V:if(l>=6&&f>=258){t.next_out=o,t.avail_out=f,t.next_in=s,t.avail_in=l,a.hold=_,a.bits=dt,g(t,_t),o=t.next_out,r=t.output,f=t.avail_out,s=t.next_in,n=t.input,l=t.avail_in,_=a.hold,dt=a.bits,a.mode===M&&(a.back=-1);break}for(a.back=0;St=a.lencode[_&(1<<a.lenbits)-1],gt=St>>>24,mt=St>>>16&255,wt=65535&St,!(gt<=dt);){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if(mt&&0==(240&mt)){for(pt=gt,vt=mt,kt=wt;St=a.lencode[kt+((_&(1<<pt+vt)-1)>>pt)],gt=St>>>24,mt=St>>>16&255,wt=65535&St,!(pt+gt<=dt);){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}_>>>=pt,dt-=pt,a.back+=pt}if(_>>>=gt,dt-=gt,a.back+=gt,a.length=wt,0===mt){a.mode=it;break}if(32&mt){a.back=-1,a.mode=M;break}if(64&mt){t.msg="invalid literal/length code",a.mode=ot;break}a.extra=15&mt,a.mode=$;case $:if(a.extra){for(Bt=a.extra;dt<Bt;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}a.length+=_&(1<<a.extra)-1,_>>>=a.extra,dt-=a.extra,a.back+=a.extra}a.was=a.length,a.mode=tt;case tt:for(;St=a.distcode[_&(1<<a.distbits)-1],gt=St>>>24,mt=St>>>16&255,wt=65535&St,!(gt<=dt);){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if(0==(240&mt)){for(pt=gt,vt=mt,kt=wt;St=a.distcode[kt+((_&(1<<pt+vt)-1)>>pt)],gt=St>>>24,mt=St>>>16&255,wt=65535&St,!(pt+gt<=dt);){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}_>>>=pt,dt-=pt,a.back+=pt}if(_>>>=gt,dt-=gt,a.back+=gt,64&mt){t.msg="invalid distance code",a.mode=ot;break}a.offset=wt,a.extra=15&mt,a.mode=et;case et:if(a.extra){for(Bt=a.extra;dt<Bt;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}a.offset+=_&(1<<a.extra)-1,_>>>=a.extra,dt-=a.extra,a.back+=a.extra}if(a.offset>a.dmax){t.msg="invalid distance too far back",a.mode=ot;break}a.mode=at;case at:if(0===f)break t;if(ut=_t-f,a.offset>ut){if((ut=a.offset-ut)>a.whave&&a.sane){t.msg="invalid distance too far back",a.mode=ot;break}ut>a.wnext?(ut-=a.wnext,ct=a.wsize-ut):ct=a.wnext-ut,ut>a.length&&(ut=a.length),bt=a.window}else bt=r,ct=o-a.offset,ut=a.length;ut>f&&(ut=f),f-=ut,a.length-=ut;do{r[o++]=bt[ct++]}while(--ut);0===a.length&&(a.mode=V);break;case it:if(0===f)break t;r[o++]=a.length,f--,a.mode=V;break;case nt:if(a.wrap){for(;dt<32;){if(0===l)break t;l--,_|=n[s++]<<dt,dt+=8}if(_t-=f,t.total_out+=_t,a.total+=_t,_t&&(t.adler=a.check=a.flags?b(a.check,r,_t,o-_t):c(a.check,r,_t,o-_t)),_t=f,(a.flags?_:i(_))!==a.check){t.msg="incorrect data check",a.mode=ot;break}_=0,dt=0}a.mode=rt;case rt:if(a.wrap&&a.flags){for(;dt<32;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if(_!==(4294967295&a.total)){t.msg="incorrect length check",a.mode=ot;break}_=0,dt=0}a.mode=st;case st:xt=B;break t;case ot:xt=A;break t;case lt:return Z;case ht:default:return E}return t.next_out=o,t.avail_out=f,t.next_in=s,t.avail_in=l,a.hold=_,a.bits=dt,(a.wsize||_t!==t.avail_out&&a.mode<ot&&(a.mode<nt||e!==k))&&d(t,t.output,t.next_out,_t-t.avail_out)?(a.mode=lt,Z):(ft-=t.avail_in,_t-=t.avail_out,t.total_in+=ft,t.total_out+=_t,a.total+=_t,a.wrap&&_t&&(t.adler=a.check=a.flags?b(a.check,r,_t,t.next_out-_t):c(a.check,r,_t,t.next_out-_t)),t.data_type=a.bits+(a.last?64:0)+(a.mode===M?128:0)+(a.mode===Q||a.mode===q?256:0),(0===ft&&0===_t||e===k)&&xt===z&&(xt=R),xt)},a.inflateEnd=function(t){if(!t||!t.state)return E;var e=t.state;return e.window&&(e.window=null),t.state=null,z},a.inflateGetHeader=function(t,e){var a;return t&&t.state?0==(2&(a=t.state).wrap)?E:(a.head=e,e.done=!1,z):E},a.inflateSetDictionary=function(t,e){var a,i,n=e.length;return t&&t.state?0!==(a=t.state).wrap&&a.mode!==K?E:a.mode===K&&(i=1,(i=c(i,e,n,0))!==a.check)?A:d(t,e,n,n)?(a.mode=lt,Z):(a.havedict=1,z):E},a.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":3,"./adler32":5,"./crc32":7,"./inffast":10,"./inftrees":12}],12:[function(t,e,a){"use strict";var i=t("../utils/common"),n=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],r=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],s=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],o=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];e.exports=function(t,e,a,l,h,d,f,_){var u,c,b,g,m,w,p,v,k,y=_.bits,x=0,z=0,B=0,S=0,E=0,A=0,Z=0,R=0,C=0,N=0,O=null,D=0,I=new i.Buf16(16),U=new i.Buf16(16),T=null,F=0;for(x=0;x<=15;x++)I[x]=0;for(z=0;z<l;z++)I[e[a+z]]++;for(E=y,S=15;S>=1&&0===I[S];S--);if(E>S&&(E=S),0===S)return h[d++]=20971520,h[d++]=20971520,_.bits=1,0;for(B=1;B<S&&0===I[B];B++);for(E<B&&(E=B),R=1,x=1;x<=15;x++)if(R<<=1,(R-=I[x])<0)return-1;if(R>0&&(0===t||1!==S))return-1;for(U[1]=0,x=1;x<15;x++)U[x+1]=U[x]+I[x];for(z=0;z<l;z++)0!==e[a+z]&&(f[U[e[a+z]]++]=z);if(0===t?(O=T=f,w=19):1===t?(O=n,D-=257,T=r,F-=257,w=256):(O=s,T=o,w=-1),N=0,z=0,x=B,m=d,A=E,Z=0,b=-1,C=1<<E,g=C-1,1===t&&C>852||2===t&&C>592)return 1;for(;;){p=x-Z,f[z]<w?(v=0,k=f[z]):f[z]>w?(v=T[F+f[z]],k=O[D+f[z]]):(v=96,k=0),u=1<<x-Z,B=c=1<<A;do{h[m+(N>>Z)+(c-=u)]=p<<24|v<<16|k|0}while(0!==c);for(u=1<<x-1;N&u;)u>>=1;if(0!==u?(N&=u-1,N+=u):N=0,z++,0==--I[x]){if(x===S)break;x=e[a+f[z]]}if(x>E&&(N&g)!==b){for(0===Z&&(Z=E),m+=B,R=1<<(A=x-Z);A+Z<S&&!((R-=I[A+Z])<=0);)A++,R<<=1;if(C+=1<<A,1===t&&C>852||2===t&&C>592)return 1;h[b=N&g]=E<<24|A<<16|m-d|0}}return 0!==N&&(h[m+N]=x-Z<<24|64<<16|0),_.bits=E,0}},{"../utils/common":3}],13:[function(t,e,a){"use strict";e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],14:[function(t,e,a){"use strict";function i(t){for(var e=t.length;--e>=0;)t[e]=0}function n(t,e,a,i,n){this.static_tree=t,this.extra_bits=e,this.extra_base=a,this.elems=i,this.max_length=n,this.has_stree=t&&t.length}function r(t,e){this.dyn_tree=t,this.max_code=0,this.stat_desc=e}function s(t){return t<256?et[t]:et[256+(t>>>7)]}function o(t,e){t.pending_buf[t.pending++]=255&e,t.pending_buf[t.pending++]=e>>>8&255}function l(t,e,a){t.bi_valid>M-a?(t.bi_buf|=e<<t.bi_valid&65535,o(t,t.bi_buf),t.bi_buf=e>>M-t.bi_valid,t.bi_valid+=a-M):(t.bi_buf|=e<<t.bi_valid&65535,t.bi_valid+=a)}function h(t,e,a){l(t,a[2*e],a[2*e+1])}function d(t,e){var a=0;do{a|=1&t,t>>>=1,a<<=1}while(--e>0);return a>>>1}function f(t){16===t.bi_valid?(o(t,t.bi_buf),t.bi_buf=0,t.bi_valid=0):t.bi_valid>=8&&(t.pending_buf[t.pending++]=255&t.bi_buf,t.bi_buf>>=8,t.bi_valid-=8)}function _(t,e){var a,i,n,r,s,o,l=e.dyn_tree,h=e.max_code,d=e.stat_desc.static_tree,f=e.stat_desc.has_stree,_=e.stat_desc.extra_bits,u=e.stat_desc.extra_base,c=e.stat_desc.max_length,b=0;for(r=0;r<=K;r++)t.bl_count[r]=0;for(l[2*t.heap[t.heap_max]+1]=0,a=t.heap_max+1;a<j;a++)(r=l[2*l[2*(i=t.heap[a])+1]+1]+1)>c&&(r=c,b++),l[2*i+1]=r,i>h||(t.bl_count[r]++,s=0,i>=u&&(s=_[i-u]),o=l[2*i],t.opt_len+=o*(r+s),f&&(t.static_len+=o*(d[2*i+1]+s)));if(0!==b){do{for(r=c-1;0===t.bl_count[r];)r--;t.bl_count[r]--,t.bl_count[r+1]+=2,t.bl_count[c]--,b-=2}while(b>0);for(r=c;0!==r;r--)for(i=t.bl_count[r];0!==i;)(n=t.heap[--a])>h||(l[2*n+1]!==r&&(t.opt_len+=(r-l[2*n+1])*l[2*n],l[2*n+1]=r),i--)}}function u(t,e,a){var i,n,r=new Array(K+1),s=0;for(i=1;i<=K;i++)r[i]=s=s+a[i-1]<<1;for(n=0;n<=e;n++){var o=t[2*n+1];0!==o&&(t[2*n]=d(r[o]++,o))}}function c(){var t,e,a,i,r,s=new Array(K+1);for(a=0,i=0;i<U-1;i++)for(it[i]=a,t=0;t<1<<W[i];t++)at[a++]=i;for(at[a-1]=i,r=0,i=0;i<16;i++)for(nt[i]=r,t=0;t<1<<J[i];t++)et[r++]=i;for(r>>=7;i<L;i++)for(nt[i]=r<<7,t=0;t<1<<J[i]-7;t++)et[256+r++]=i;for(e=0;e<=K;e++)s[e]=0;for(t=0;t<=143;)$[2*t+1]=8,t++,s[8]++;for(;t<=255;)$[2*t+1]=9,t++,s[9]++;for(;t<=279;)$[2*t+1]=7,t++,s[7]++;for(;t<=287;)$[2*t+1]=8,t++,s[8]++;for(u($,F+1,s),t=0;t<L;t++)tt[2*t+1]=5,tt[2*t]=d(t,5);rt=new n($,W,T+1,F,K),st=new n(tt,J,0,L,K),ot=new n(new Array(0),Q,0,H,P)}function b(t){var e;for(e=0;e<F;e++)t.dyn_ltree[2*e]=0;for(e=0;e<L;e++)t.dyn_dtree[2*e]=0;for(e=0;e<H;e++)t.bl_tree[2*e]=0;t.dyn_ltree[2*Y]=1,t.opt_len=t.static_len=0,t.last_lit=t.matches=0}function g(t){t.bi_valid>8?o(t,t.bi_buf):t.bi_valid>0&&(t.pending_buf[t.pending++]=t.bi_buf),t.bi_buf=0,t.bi_valid=0}function m(t,e,a,i){g(t),i&&(o(t,a),o(t,~a)),A.arraySet(t.pending_buf,t.window,e,a,t.pending),t.pending+=a}function w(t,e,a,i){var n=2*e,r=2*a;return 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diff --git a/web/lib/perfect-scrollbar-0.6.15.min.js b/web/gui/lib/perfect-scrollbar-0.6.15.min.js
index 1bde608d5..7fabff54c 100644
--- a/web/lib/perfect-scrollbar-0.6.15.min.js
+++ b/web/gui/lib/perfect-scrollbar-0.6.15.min.js
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: MIT
 /* perfect-scrollbar v0.6.15 */
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diff --git a/web/lib/raphael-2.2.4-min.js b/web/gui/lib/raphael-2.2.4-min.js
index 0259dca63..ea2d8c190 100644
--- a/web/lib/raphael-2.2.4-min.js
+++ b/web/gui/lib/raphael-2.2.4-min.js
@@ -1,3 +1,4 @@
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diff --git a/web/lib/tableExport-1.6.0.min.js b/web/gui/lib/tableExport-1.6.0.min.js
index d8f32e6ea..484130931 100644
--- a/web/lib/tableExport-1.6.0.min.js
+++ b/web/gui/lib/tableExport-1.6.0.min.js
@@ -5,6 +5,8 @@
  Original work Copyright (c) 2014 Giri Raj, https://github.com/kayalshri/

 

  Licensed under the MIT License, http://opensource.org/licenses/mit-license

+

+ SPDX-License-Identifier: MIT

 */

 (function(b){b.fn.extend({tableExport:function(q){function R(d){var a=[];b(d).find("thead").first().find("th").each(function(d,f){void 0!==b(f).attr("data-field")?a[d]=b(f).attr("data-field"):a[d]=d.toString()});return a}function w(d,g,e,f,k){if(-1==b.inArray(e,a.ignoreRow)&&-1==b.inArray(e-f,a.ignoreRow)){var B=b(d).filter(function(){return"none"!=b(this).data("tableexport-display")&&(b(this).is(":visible")||"always"==b(this).data("tableexport-display")||"always"==b(this).closest("table").data("tableexport-display"))}).find(g),

 F=0;B.each(function(d){if("always"==b(this).data("tableexport-display")||"none"!=b(this).css("display")&&"hidden"!=b(this).css("visibility")&&"none"!=b(this).data("tableexport-display")){var g=d,f=!1;0<a.ignoreColumn.length&&("string"==typeof a.ignoreColumn[0]?I.length>g&&"undefined"!=typeof I[g]&&-1!=b.inArray(I[g],a.ignoreColumn)&&(f=!0):"number"!=typeof a.ignoreColumn[0]||-1==b.inArray(g,a.ignoreColumn)&&-1==b.inArray(g-B.length,a.ignoreColumn)||(f=!0));if(0==f&&"function"===typeof k){var f=0,

diff --git a/web/refresh-badges.js b/web/gui/refresh-badges.js
index 27a5fe7b5..00dd4dadf 100644
--- a/web/refresh-badges.js
+++ b/web/gui/refresh-badges.js
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
 // ----------------------------------------------------------------------------
 // This script periodically updates all the netdata badges you have added to a
 // page as images. You don't need this script if you add the badges with
diff --git a/web/registry.html b/web/gui/registry.html
index 16a9db9e6..3be7952e2 100644
--- a/web/registry.html
+++ b/web/gui/registry.html
@@ -1,4 +1,5 @@
 <!DOCTYPE html>
+<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
 <html lang="en">
 <head>
     <title>NetData Registry Dashboard</title>
@@ -114,11 +115,11 @@ var netdataRegistryCallback = function(machines_array) {
         while(len--) {
             var u = machines[len];
 
-            var status = "enabled";
+            //var status = "enabled";
             found++;
 
-            if(u.guid === NETDATA.registry.machine_guid)
-                status = "disabled"
+            //if(u.guid === NETDATA.registry.machine_guid)
+            //    status = "disabled";
 
             el += registryAddServer(u);
             a1 += '<li id="registry_action_' + u.guid + '"><a href="#" onclick="deleteRegistryModalHandler(\'' + u.guid + '\',\'' + u.name + '\',\'' + u.url + '\'); return false;"><i class="fa fa-trash-o" aria-hidden="true" style="color: #999;"></i></a></li>';
@@ -127,9 +128,9 @@ var netdataRegistryCallback = function(machines_array) {
 
     if(!found) {
         if(machines)
-            el += '<li><a href="https://github.com/firehol/netdata/wiki/mynetdata-menu-item" style="color: #666;" target="_blank">your netdata server list is empty...</a></li>';
+            el += '<li><a href="https://github.com/netdata/netdata/wiki/mynetdata-menu-item" style="color: #666;" target="_blank">your netdata server list is empty...</a></li>';
         else
-            el += '<li><a href="https://github.com/firehol/netdata/wiki/mynetdata-menu-item" style="color: #666;" target="_blank">failed to contact the registry...</a></li>';
+            el += '<li><a href="https://github.com/netdata/netdata/wiki/mynetdata-menu-item" style="color: #666;" target="_blank">failed to contact the registry...</a></li>';
 
         a1 += '<li><a href="#">&nbsp;</a></li>';
 
@@ -146,8 +147,8 @@ var netdataRegistryCallback = function(machines_array) {
     el += '<li role="separator" class="divider"></li>';
     a1 += '<li role="separator" class="divider"></li>';
 
-    el += '<li><a href="https://github.com/firehol/netdata/wiki/mynetdata-menu-item" style="color: #999;" target="_blank">What is this?</a></li>';
-    a1 += '<li><a href="#" style="color: #999;" onclick="switchRegistryModalHandler(); return false;"><i class="fa fa-cog" aria-hidden="true" style="color: #999;"></i></a></li>'
+    el += '<li><a href="https://github.com/netdata/netdata/wiki/mynetdata-menu-item" style="color: #999;" target="_blank">What is this?</a></li>';
+    a1 += '<li><a href="#" style="color: #999;" onclick="switchRegistryModalHandler(); return false;"><i class="fa fa-cog" aria-hidden="true" style="color: #999;"></i></a></li>';
 
     document.getElementById('mynetdata_servers').innerHTML = el;
     //document.getElementById('mynetdata_servers2').innerHTML = el;
diff --git a/web/robots.txt b/web/gui/robots.txt
index e434d9c2b..e434d9c2b 100644
--- a/web/robots.txt
+++ b/web/gui/robots.txt
diff --git a/web/sitemap.xml b/web/gui/sitemap.xml
index ba44033b2..4438e8b35 100644
--- a/web/sitemap.xml
+++ b/web/gui/sitemap.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
         <url>
                 <loc>https://my-netdata.io/</loc>
diff --git a/web/tv.html b/web/gui/tv.html
index 3e2241311..bd549be94 100644
--- a/web/tv.html
+++ b/web/gui/tv.html
@@ -1,4 +1,5 @@
 <!DOCTYPE html>
+<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
 <html lang="en">
 <head>
     <title>NetData TV Dashboard</title>
@@ -146,18 +147,18 @@ setTimeout(function(){
             <b>IPv4 traffic on both servers</b>
         </div>
         <div style="width: 100%; height: calc(100% - 15px); text-align: center; display: inline-block;">
-            <div data-netdata="system.ipv4"
+            <div data-netdata="system.net"
                     data-host="http://registry.my-netdata.io"
                     data-common-max="traffic"
                     data-common-min="traffic"
-                    data-title="IPv4 traffic on registry.my-netdata.io"
+                    data-title="Network traffic on registry.my-netdata.io"
                     data-chart-library="dygraph"
                     data-width="49%"
                     data-height="100%"
                     data-after="-300"
                     ></div>
-            <div data-netdata="system.ipv4"
-                    data-title="IPv4 traffic on your netdata server"
+            <div data-netdata="system.net"
+                    data-title="Network traffic on your netdata server"
                     data-common-max="traffic"
                     data-common-min="traffic"
                     data-chart-library="dygraph"
diff --git a/web/gui/version.txt b/web/gui/version.txt
new file mode 100644
index 000000000..25011b19d
--- /dev/null
+++ b/web/gui/version.txt
@@ -0,0 +1 @@
+2b16aab3955dea836a06f580c0e111396916d7ef
diff --git a/web/server/Makefile.am b/web/server/Makefile.am
new file mode 100644
index 000000000..843c4cc9b
--- /dev/null
+++ b/web/server/Makefile.am
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
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+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    single \
+    multi \
+    static \
+    $(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/server/Makefile.in b/web/server/Makefile.in
new file mode 100644
index 000000000..4b2614c5a
--- /dev/null
+++ b/web/server/Makefile.in
@@ -0,0 +1,650 @@
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+
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+
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+
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+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+
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+# (1) if the variable is set in 'config.status', edit 'config.status'
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+GTAGS:
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+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
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+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
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+	      install; \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
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+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
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+.MAKE: $(am__recursive_targets) install-am install-strip
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diff --git a/web/server/README.md b/web/server/README.md
new file mode 100644
index 000000000..8a6cad139
--- /dev/null
+++ b/web/server/README.md
@@ -0,0 +1,107 @@
+# netdata web server
+
+netdata supports 3 implementation of its internal web server:
+
+- `static-threaded` is a web server with a fix (configured number of threads)
+- `single-threaded` is a simple web server running with a single thread
+- `multi-threaded` is a web server that spawns a thread for each client connection
+- `none` to disable the web server
+
+We suggest to use the `static-threaded` one. It is the most efficient.
+
+All versions of the web servers use non-blocking I/O.
+
+All web servers respect the `keep-alive` HTTP header to serve multiple HTTP requests via the same connection.
+
+
+## Configuration
+
+#### selecting the web server
+
+You can select the web server implementation by editing `netdata.conf` and setting:
+
+```
+[web]
+    mode = none | single-threaded | multi-threaded | static-threaded
+```
+
+The `static` web server supports also these settings:
+
+```
+[web]
+    mode = static-threaded
+    web server threads = 4
+    web server max sockets = 512
+```
+
+The default number of processor threads is `min(cpu cores, 6)`.
+
+The `web server max sockets` setting is automatically adjusted to 50% of the max number of open files
+netdata is allowed to use (via `/etc/security/limits.conf` or systemd), to allow enough file descriptors
+to be available for data collection.
+
+#### binding netdata to multiple ports
+
+netdata can bind to multiple IPs and ports. Up to 100 sockets can be used
+(you can increase it at compile time with `CFLAGS="-DMAX_LISTEN_FDS=200" ./netdata-installer.sh ...`).
+
+The ports to bind are controlled via `[web].bind to`, like this:
+   
+```
+[web]
+   default port = 19999
+   bind to = 127.0.0.1 10.1.1.1:19998 hostname:19997 [::]:19996 localhost:19995 *:http unix:/tmp/netdata.sock
+```
+   
+Using the above, netdata will bind to:
+   - IPv4 127.0.0.1 at port 19999 (port was used from `default port`)
+   - IPv4 10.1.1.1 at port 19998
+   - All the IPs `hostname` resolves to (both IPv4 and IPv6 depending on the resolved IPs) at port 19997
+   - All IPv6 IPs at port 19996
+   - All the IPs `localhost` resolves to (both IPv4 and IPv6 depending the resolved IPs) at port 19996
+   - All IPv4 and IPv6 IPs at port `http` as set in `/etc/services`
+   - Unix domain socket `/tmp/netdata.sock`
+   
+The option `[web].default port` is used when an entries in `[web].bind to` do not specify a port.
+
+#### access lists
+
+Netdata supports access lists in `netdata.conf`:
+
+```
+[web]
+	allow connections from = localhost *
+	allow dashboard from = localhost *
+	allow badges from = *
+	allow streaming from = *
+	allow netdata.conf from = localhost fd* 10.* 192.168.* 172.16.* 172.17.* 172.18.* 172.19.* 172.20.* 172.21.* 172.22.* 172.23.* 172.24.* 172.25.* 172.26.* 172.27.* 172.28.* 172.29.* 172.30.* 172.31.*
+```
+
+`*` does string matches on the IPs of the clients.
+
+- `allow connections from` matches anyone that connects on the netdata port(s).
+   So, if someone is not allowed, it will be connected and disconnected immediately, without reading even
+   a single byte from its connection. This is a global settings with higher priority to any of the ones below.
+
+- `allow dashboard from` receives the request and examines if it is a static dashboard file or an API call the
+   dashboards do.
+
+- `allow badges from` checks if the API request is for a badge. Badges are not matched by `allow dashboard from`.
+
+- `allow streaming from` checks if the slave willing to stream metrics to this netdata is allowed.
+   This can be controlled per API KEY and MACHINE GUID in [stream.conf](../../streaming/stream.conf).
+   The setting in `netdata.conf` is checked before the ones in [stream.conf](../../streaming/stream.conf).
+
+- `allow netdata.conf from` checks the IP to allow `http://netdata.host:19999/netdata.conf`.
+   By default it allows only private lans.
+
+## DDoS protection
+
+If you publish your netdata to the internet, you may want to apply some protection against DDoS:
+
+1. Use the `static-threaded` web server (it is the default)
+2. Use reasonable `[web].web server max sockets` (the default is)
+3. Don't use all your cpu cores for netdata (lower `[web].web server threads`)
+4. Run netdata with a low process scheduling priority (the default is the lowest)
+5. If possible, proxy netdata via a full featured web server (nginx, apache, etc)
+
diff --git a/web/server/multi/Makefile.am b/web/server/multi/Makefile.am
new file mode 100644
index 000000000..90cc9ca1e
--- /dev/null
+++ b/web/server/multi/Makefile.am
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    $(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/server/multi/Makefile.in b/web/server/multi/Makefile.in
new file mode 100644
index 000000000..61ef9455f
--- /dev/null
+++ b/web/server/multi/Makefile.in
@@ -0,0 +1,647 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
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+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-recursive
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
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+info: info-recursive
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+install-html: install-html-recursive
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+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
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+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-recursive
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+ps: ps-recursive
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+ps-am:
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+uninstall-am:
+
+.MAKE: $(am__recursive_targets) install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-am clean clean-generic cscopelist-am ctags ctags-am \
+	distclean distclean-generic distclean-tags distdir dvi dvi-am \
+	html html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/web/server/multi/README.md b/web/server/multi/README.md
new file mode 100644
index 000000000..f51073e93
--- /dev/null
+++ b/web/server/multi/README.md
@@ -0,0 +1,8 @@
+# `multi-threaded` web server
+
+The `multi-threaded` web server spawns a thread for each connection it receives.
+
+Each thread uses non-blocking I/O so it can serve any number of web requests in parallel,
+though this is not supported by HTTP, so in practice each thread serves all the requests sequentially.
+
+Each thread respects the `keep-alive` HTTP header to serve multiple HTTP requests via the same connection. 
\ No newline at end of file
diff --git a/web/server/multi/multi-threaded.c b/web/server/multi/multi-threaded.c
new file mode 100644
index 000000000..37bdd38ad
--- /dev/null
+++ b/web/server/multi/multi-threaded.c
@@ -0,0 +1,314 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define WEB_SERVER_INTERNALS 1
+#include "multi-threaded.h"
+
+// --------------------------------------------------------------------------------------
+// the thread of a single client - for the MULTI-THREADED web server
+
+// 1. waits for input and output, using async I/O
+// 2. it processes HTTP requests
+// 3. it generates HTTP responses
+// 4. it copies data from input to output if mode is FILECOPY
+
+int web_client_timeout = DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS;
+int web_client_first_request_timeout = DEFAULT_TIMEOUT_TO_RECEIVE_FIRST_WEB_REQUEST;
+long web_client_streaming_rate_t = 0L;
+
+static void multi_threaded_web_client_worker_main_cleanup(void *ptr) {
+    struct web_client *w = ptr;
+    WEB_CLIENT_IS_DEAD(w);
+    w->running = 0;
+}
+
+static void *multi_threaded_web_client_worker_main(void *ptr) {
+    netdata_thread_cleanup_push(multi_threaded_web_client_worker_main_cleanup, ptr);
+
+            struct web_client *w = ptr;
+            w->running = 1;
+
+            struct pollfd fds[2], *ifd, *ofd;
+            int retval, timeout_ms;
+            nfds_t fdmax = 0;
+
+            while(!netdata_exit) {
+                if(unlikely(web_client_check_dead(w))) {
+                    debug(D_WEB_CLIENT, "%llu: client is dead.", w->id);
+                    break;
+                }
+                else if(unlikely(!web_client_has_wait_receive(w) && !web_client_has_wait_send(w))) {
+                    debug(D_WEB_CLIENT, "%llu: client is not set for neither receiving nor sending data.", w->id);
+                    break;
+                }
+
+                if(unlikely(w->ifd < 0 || w->ofd < 0)) {
+                    error("%llu: invalid file descriptor, ifd = %d, ofd = %d (required 0 <= fd", w->id, w->ifd, w->ofd);
+                    break;
+                }
+
+                if(w->ifd == w->ofd) {
+                    fds[0].fd = w->ifd;
+                    fds[0].events = 0;
+                    fds[0].revents = 0;
+
+                    if(web_client_has_wait_receive(w)) fds[0].events |= POLLIN;
+                    if(web_client_has_wait_send(w))    fds[0].events |= POLLOUT;
+
+                    fds[1].fd = -1;
+                    fds[1].events = 0;
+                    fds[1].revents = 0;
+
+                    ifd = ofd = &fds[0];
+
+                    fdmax = 1;
+                }
+                else {
+                    fds[0].fd = w->ifd;
+                    fds[0].events = 0;
+                    fds[0].revents = 0;
+                    if(web_client_has_wait_receive(w)) fds[0].events |= POLLIN;
+                    ifd = &fds[0];
+
+                    fds[1].fd = w->ofd;
+                    fds[1].events = 0;
+                    fds[1].revents = 0;
+                    if(web_client_has_wait_send(w))    fds[1].events |= POLLOUT;
+                    ofd = &fds[1];
+
+                    fdmax = 2;
+                }
+
+                debug(D_WEB_CLIENT, "%llu: Waiting socket async I/O for %s %s", w->id, web_client_has_wait_receive(w)?"INPUT":"", web_client_has_wait_send(w)?"OUTPUT":"");
+                errno = 0;
+                timeout_ms = web_client_timeout * 1000;
+                retval = poll(fds, fdmax, timeout_ms);
+
+                if(unlikely(netdata_exit)) break;
+
+                if(unlikely(retval == -1)) {
+                    if(errno == EAGAIN || errno == EINTR) {
+                        debug(D_WEB_CLIENT, "%llu: EAGAIN received.", w->id);
+                        continue;
+                    }
+
+                    debug(D_WEB_CLIENT, "%llu: LISTENER: poll() failed (input fd = %d, output fd = %d). Closing client.", w->id, w->ifd, w->ofd);
+                    break;
+                }
+                else if(unlikely(!retval)) {
+                    debug(D_WEB_CLIENT, "%llu: Timeout while waiting socket async I/O for %s %s", w->id, web_client_has_wait_receive(w)?"INPUT":"", web_client_has_wait_send(w)?"OUTPUT":"");
+                    break;
+                }
+
+                if(unlikely(netdata_exit)) break;
+
+                int used = 0;
+                if(web_client_has_wait_send(w) && ofd->revents & POLLOUT) {
+                    used++;
+                    if(web_client_send(w) < 0) {
+                        debug(D_WEB_CLIENT, "%llu: Cannot send data to client. Closing client.", w->id);
+                        break;
+                    }
+                }
+
+                if(unlikely(netdata_exit)) break;
+
+                if(web_client_has_wait_receive(w) && (ifd->revents & POLLIN || ifd->revents & POLLPRI)) {
+                    used++;
+                    if(web_client_receive(w) < 0) {
+                        debug(D_WEB_CLIENT, "%llu: Cannot receive data from client. Closing client.", w->id);
+                        break;
+                    }
+
+                    if(w->mode == WEB_CLIENT_MODE_NORMAL) {
+                        debug(D_WEB_CLIENT, "%llu: Attempting to process received data.", w->id);
+                        web_client_process_request(w);
+
+                        // if the sockets are closed, may have transferred this client
+                        // to plugins.d
+                        if(unlikely(w->mode == WEB_CLIENT_MODE_STREAM))
+                            break;
+                    }
+                }
+
+                if(unlikely(!used)) {
+                    debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on socket.", w->id);
+                    break;
+                }
+            }
+
+            if(w->mode != WEB_CLIENT_MODE_STREAM)
+                web_server_log_connection(w, "DISCONNECTED");
+
+            web_client_request_done(w);
+
+            debug(D_WEB_CLIENT, "%llu: done...", w->id);
+
+            // close the sockets/files now
+            // to free file descriptors
+            if(w->ifd == w->ofd) {
+                if(w->ifd != -1) close(w->ifd);
+            }
+            else {
+                if(w->ifd != -1) close(w->ifd);
+                if(w->ofd != -1) close(w->ofd);
+            }
+            w->ifd = -1;
+            w->ofd = -1;
+
+    netdata_thread_cleanup_pop(1);
+    return NULL;
+}
+
+// --------------------------------------------------------------------------------------
+// the main socket listener - MULTI-THREADED
+
+// 1. it accepts new incoming requests on our port
+// 2. creates a new web_client for each connection received
+// 3. spawns a new netdata_thread to serve the client (this is optimal for keep-alive clients)
+// 4. cleans up old web_clients that their netdata_threads have been exited
+
+static void web_client_multi_threaded_web_server_release_clients(void) {
+    struct web_client *w;
+    for(w = web_clients_cache.used; w ; ) {
+        if(unlikely(!w->running && web_client_check_dead(w))) {
+            struct web_client *t = w->next;
+            web_client_release(w);
+            w = t;
+        }
+        else
+            w = w->next;
+    }
+}
+
+static void web_client_multi_threaded_web_server_stop_all_threads(void) {
+    struct web_client *w;
+
+    int found = 1;
+    usec_t max = 2 * USEC_PER_SEC, step = 50000;
+    for(w = web_clients_cache.used; w ; w = w->next) {
+        if(w->running) {
+            found++;
+            info("stopping web client %s, id %llu", w->client_ip, w->id);
+            netdata_thread_cancel(w->thread);
+        }
+    }
+
+    while(found && max > 0) {
+        max -= step;
+        info("Waiting %d web threads to finish...", found);
+        sleep_usec(step);
+        found = 0;
+        for(w = web_clients_cache.used; w ; w = w->next)
+            if(w->running) found++;
+    }
+
+    if(found)
+        error("%d web threads are taking too long to finish. Giving up.", found);
+}
+
+static struct pollfd *socket_listen_main_multi_threaded_fds = NULL;
+
+static void socket_listen_main_multi_threaded_cleanup(void *data) {
+    struct netdata_static_thread *static_thread = (struct netdata_static_thread *)data;
+    static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
+
+    info("cleaning up...");
+
+    info("releasing allocated memory...");
+    freez(socket_listen_main_multi_threaded_fds);
+
+    info("closing all sockets...");
+    listen_sockets_close(&api_sockets);
+
+    info("stopping all running web server threads...");
+    web_client_multi_threaded_web_server_stop_all_threads();
+
+    info("freeing web clients cache...");
+    web_client_cache_destroy();
+
+    info("cleanup completed.");
+    static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
+}
+
+#define CLEANUP_EVERY_EVENTS 60
+void *socket_listen_main_multi_threaded(void *ptr) {
+    netdata_thread_cleanup_push(socket_listen_main_multi_threaded_cleanup, ptr);
+
+            web_server_mode = WEB_SERVER_MODE_MULTI_THREADED;
+            web_server_is_multithreaded = 1;
+
+            struct web_client *w;
+            int retval, counter = 0;
+
+            if(!api_sockets.opened)
+                fatal("LISTENER: No sockets to listen to.");
+
+            socket_listen_main_multi_threaded_fds = callocz(sizeof(struct pollfd), api_sockets.opened);
+
+            size_t i;
+            for(i = 0; i < api_sockets.opened ;i++) {
+                socket_listen_main_multi_threaded_fds[i].fd = api_sockets.fds[i];
+                socket_listen_main_multi_threaded_fds[i].events = POLLIN;
+                socket_listen_main_multi_threaded_fds[i].revents = 0;
+
+                info("Listening on '%s'", (api_sockets.fds_names[i])?api_sockets.fds_names[i]:"UNKNOWN");
+            }
+
+            int timeout_ms = 1 * 1000;
+
+            while(!netdata_exit) {
+
+                // debug(D_WEB_CLIENT, "LISTENER: Waiting...");
+                retval = poll(socket_listen_main_multi_threaded_fds, api_sockets.opened, timeout_ms);
+
+                if(unlikely(retval == -1)) {
+                    error("LISTENER: poll() failed.");
+                    continue;
+                }
+                else if(unlikely(!retval)) {
+                    debug(D_WEB_CLIENT, "LISTENER: poll() timeout.");
+                    counter++;
+                    continue;
+                }
+
+                for(i = 0 ; i < api_sockets.opened ; i++) {
+                    short int revents = socket_listen_main_multi_threaded_fds[i].revents;
+
+                    // check for new incoming connections
+                    if(revents & POLLIN || revents & POLLPRI) {
+                        socket_listen_main_multi_threaded_fds[i].revents = 0;
+
+                        w = web_client_create_on_listenfd(socket_listen_main_multi_threaded_fds[i].fd);
+                        if(unlikely(!w)) {
+                            // no need for error log - web_client_create_on_listenfd already logged the error
+                            continue;
+                        }
+
+                        if(api_sockets.fds_families[i] == AF_UNIX)
+                            web_client_set_unix(w);
+                        else
+                            web_client_set_tcp(w);
+
+                        char tag[NETDATA_THREAD_TAG_MAX + 1];
+                        snprintfz(tag, NETDATA_THREAD_TAG_MAX, "WEB_CLIENT[%llu,[%s]:%s]", w->id, w->client_ip, w->client_port);
+
+                        w->running = 1;
+                        if(netdata_thread_create(&w->thread, tag, NETDATA_THREAD_OPTION_DONT_LOG, multi_threaded_web_client_worker_main, w) != 0) {
+                            w->running = 0;
+                            web_client_release(w);
+                        }
+                    }
+                }
+
+                counter++;
+                if(counter > CLEANUP_EVERY_EVENTS) {
+                    counter = 0;
+                    web_client_multi_threaded_web_server_release_clients();
+                }
+            }
+
+    netdata_thread_cleanup_pop(1);
+    return NULL;
+}
+
+
diff --git a/web/server/multi/multi-threaded.h b/web/server/multi/multi-threaded.h
new file mode 100644
index 000000000..d7ebf3c54
--- /dev/null
+++ b/web/server/multi/multi-threaded.h
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_WEB_SERVER_MULTI_THREADED_H
+#define NETDATA_WEB_SERVER_MULTI_THREADED_H
+
+#include "web/server/web_server.h"
+
+extern void *socket_listen_main_multi_threaded(void *ptr);
+
+#endif //NETDATA_WEB_SERVER_MULTI_THREADED_H
diff --git a/web/server/single/Makefile.am b/web/server/single/Makefile.am
new file mode 100644
index 000000000..90cc9ca1e
--- /dev/null
+++ b/web/server/single/Makefile.am
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+SUBDIRS = \
+    $(NULL)
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/server/single/Makefile.in b/web/server/single/Makefile.in
new file mode 100644
index 000000000..a8ae2a35b
--- /dev/null
+++ b/web/server/single/Makefile.in
@@ -0,0 +1,647 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+	  else \
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diff --git a/web/server/single/README.md b/web/server/single/README.md
new file mode 100644
index 000000000..df5fe56e3
--- /dev/null
+++ b/web/server/single/README.md
@@ -0,0 +1,6 @@
+# `single-threaded` web server
+
+The `single-threaded` web server runs as a single thread inside netdata.
+It uses non-blocking I/O so it can serve any number of web requests in parallel.
+
+This web server respects the `keep-alive` HTTP header to serve multiple HTTP requests via the same connection.
\ No newline at end of file
diff --git a/web/server/single/single-threaded.c b/web/server/single/single-threaded.c
new file mode 100644
index 000000000..7e89ee683
--- /dev/null
+++ b/web/server/single/single-threaded.c
@@ -0,0 +1,194 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define WEB_SERVER_INTERNALS 1
+#include "single-threaded.h"
+
+// --------------------------------------------------------------------------------------
+// the main socket listener - SINGLE-THREADED
+
+struct web_client *single_threaded_clients[FD_SETSIZE];
+
+static inline int single_threaded_link_client(struct web_client *w, fd_set *ifds, fd_set *ofds, fd_set *efds, int *max) {
+    if(unlikely(web_client_check_dead(w) || (!web_client_has_wait_receive(w) && !web_client_has_wait_send(w)))) {
+        return 1;
+    }
+
+    if(unlikely(w->ifd < 0 || w->ifd >= (int)FD_SETSIZE || w->ofd < 0 || w->ofd >= (int)FD_SETSIZE)) {
+        error("%llu: invalid file descriptor, ifd = %d, ofd = %d (required 0 <= fd < FD_SETSIZE (%d)", w->id, w->ifd, w->ofd, (int)FD_SETSIZE);
+        return 1;
+    }
+
+    FD_SET(w->ifd, efds);
+    if(unlikely(*max < w->ifd)) *max = w->ifd;
+
+    if(unlikely(w->ifd != w->ofd)) {
+        if(*max < w->ofd) *max = w->ofd;
+        FD_SET(w->ofd, efds);
+    }
+
+    if(web_client_has_wait_receive(w)) FD_SET(w->ifd, ifds);
+    if(web_client_has_wait_send(w))    FD_SET(w->ofd, ofds);
+
+    single_threaded_clients[w->ifd] = w;
+    single_threaded_clients[w->ofd] = w;
+
+    return 0;
+}
+
+static inline int single_threaded_unlink_client(struct web_client *w, fd_set *ifds, fd_set *ofds, fd_set *efds) {
+    FD_CLR(w->ifd, efds);
+    if(unlikely(w->ifd != w->ofd)) FD_CLR(w->ofd, efds);
+
+    if(web_client_has_wait_receive(w)) FD_CLR(w->ifd, ifds);
+    if(web_client_has_wait_send(w))    FD_CLR(w->ofd, ofds);
+
+    single_threaded_clients[w->ifd] = NULL;
+    single_threaded_clients[w->ofd] = NULL;
+
+    if(unlikely(web_client_check_dead(w) || (!web_client_has_wait_receive(w) && !web_client_has_wait_send(w)))) {
+        return 1;
+    }
+
+    return 0;
+}
+
+static void socket_listen_main_single_threaded_cleanup(void *data) {
+    struct netdata_static_thread *static_thread = (struct netdata_static_thread *)data;
+    static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
+
+    info("closing all sockets...");
+    listen_sockets_close(&api_sockets);
+
+    info("freeing web clients cache...");
+    web_client_cache_destroy();
+
+    info("cleanup completed.");
+    static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
+}
+
+void *socket_listen_main_single_threaded(void *ptr) {
+    netdata_thread_cleanup_push(socket_listen_main_single_threaded_cleanup, ptr);
+    web_server_mode = WEB_SERVER_MODE_SINGLE_THREADED;
+    web_server_is_multithreaded = 0;
+
+    struct web_client *w;
+
+    if(!api_sockets.opened)
+        fatal("LISTENER: no listen sockets available.");
+
+    size_t i;
+    for(i = 0; i < (size_t)FD_SETSIZE ; i++)
+        single_threaded_clients[i] = NULL;
+
+    fd_set ifds, ofds, efds, rifds, rofds, refds;
+    FD_ZERO (&ifds);
+    FD_ZERO (&ofds);
+    FD_ZERO (&efds);
+    int fdmax = 0;
+
+    for(i = 0; i < api_sockets.opened ; i++) {
+        if (api_sockets.fds[i] < 0 || api_sockets.fds[i] >= (int)FD_SETSIZE)
+            fatal("LISTENER: Listen socket %d is not ready, or invalid.", api_sockets.fds[i]);
+
+        info("Listening on '%s'", (api_sockets.fds_names[i])?api_sockets.fds_names[i]:"UNKNOWN");
+
+        FD_SET(api_sockets.fds[i], &ifds);
+        FD_SET(api_sockets.fds[i], &efds);
+        if(fdmax < api_sockets.fds[i])
+            fdmax = api_sockets.fds[i];
+    }
+
+    while(!netdata_exit) {
+        debug(D_WEB_CLIENT_ACCESS, "LISTENER: single threaded web server waiting (fdmax = %d)...", fdmax);
+
+        struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
+        rifds = ifds;
+        rofds = ofds;
+        refds = efds;
+        int retval = select(fdmax+1, &rifds, &rofds, &refds, &tv);
+
+        if(unlikely(retval == -1)) {
+            error("LISTENER: select() failed.");
+            continue;
+        }
+        else if(likely(retval)) {
+            debug(D_WEB_CLIENT_ACCESS, "LISTENER: got something.");
+
+            for(i = 0; i < api_sockets.opened ; i++) {
+                if (FD_ISSET(api_sockets.fds[i], &rifds)) {
+                    debug(D_WEB_CLIENT_ACCESS, "LISTENER: new connection.");
+                    w = web_client_create_on_listenfd(api_sockets.fds[i]);
+                    if(unlikely(!w))
+                        continue;
+
+                    if(api_sockets.fds_families[i] == AF_UNIX)
+                        web_client_set_unix(w);
+                    else
+                        web_client_set_tcp(w);
+
+                    if (single_threaded_link_client(w, &ifds, &ofds, &ifds, &fdmax) != 0) {
+                        web_client_release(w);
+                    }
+                }
+            }
+
+            for(i = 0 ; i <= (size_t)fdmax ; i++) {
+                if(likely(!FD_ISSET(i, &rifds) && !FD_ISSET(i, &rofds) && !FD_ISSET(i, &refds)))
+                    continue;
+
+                w = single_threaded_clients[i];
+                if(unlikely(!w)) {
+                    // error("no client on slot %zu", i);
+                    continue;
+                }
+
+                if(unlikely(single_threaded_unlink_client(w, &ifds, &ofds, &efds) != 0)) {
+                    // error("failed to unlink client %zu", i);
+                    web_client_release(w);
+                    continue;
+                }
+
+                if (unlikely(FD_ISSET(w->ifd, &refds) || FD_ISSET(w->ofd, &refds))) {
+                    // error("no input on client %zu", i);
+                    web_client_release(w);
+                    continue;
+                }
+
+                if (unlikely(web_client_has_wait_receive(w) && FD_ISSET(w->ifd, &rifds))) {
+                    if (unlikely(web_client_receive(w) < 0)) {
+                        // error("cannot read from client %zu", i);
+                        web_client_release(w);
+                        continue;
+                    }
+
+                    if (w->mode != WEB_CLIENT_MODE_FILECOPY) {
+                        debug(D_WEB_CLIENT, "%llu: Processing received data.", w->id);
+                        web_client_process_request(w);
+                    }
+                }
+
+                if (unlikely(web_client_has_wait_send(w) && FD_ISSET(w->ofd, &rofds))) {
+                    if (unlikely(web_client_send(w) < 0)) {
+                        // error("cannot send data to client %zu", i);
+                        debug(D_WEB_CLIENT, "%llu: Cannot send data to client. Closing client.", w->id);
+                        web_client_release(w);
+                        continue;
+                    }
+                }
+
+                if(unlikely(single_threaded_link_client(w, &ifds, &ofds, &efds, &fdmax) != 0)) {
+                    // error("failed to link client %zu", i);
+                    web_client_release(w);
+                }
+            }
+        }
+        else {
+            debug(D_WEB_CLIENT_ACCESS, "LISTENER: single threaded web server timeout.");
+        }
+    }
+
+    netdata_thread_cleanup_pop(1);
+    return NULL;
+}
+
+
diff --git a/web/server/single/single-threaded.h b/web/server/single/single-threaded.h
new file mode 100644
index 000000000..fab4ceba1
--- /dev/null
+++ b/web/server/single/single-threaded.h
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_WEB_SERVER_SINGLE_THREADED_H
+#define NETDATA_WEB_SERVER_SINGLE_THREADED_H
+
+#include "web/server/web_server.h"
+
+extern void *socket_listen_main_single_threaded(void *ptr);
+
+#endif //NETDATA_WEB_SERVER_SINGLE_THREADED_H
diff --git a/web/server/static/Makefile.am b/web/server/static/Makefile.am
new file mode 100644
index 000000000..90cc9ca1e
--- /dev/null
+++ b/web/server/static/Makefile.am
@@ -0,0 +1,11 @@
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+
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+	README.md \
+	$(NULL)
diff --git a/web/server/static/Makefile.in b/web/server/static/Makefile.in
new file mode 100644
index 000000000..f9dda4fa2
--- /dev/null
+++ b/web/server/static/Makefile.in
@@ -0,0 +1,647 @@
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+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
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+# This directory's subdirectories are mostly independent; you can cd
+# into them and run 'make' without going through this Makefile.
+# To change the values of 'make' variables: instead of editing Makefiles,
+# (1) if the variable is set in 'config.status', edit 'config.status'
+#     (which will cause the Makefiles to be regenerated when you run 'make');
+# (2) otherwise, pass the desired values on the 'make' command line.
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+	if $(am__make_keepgoing); then \
+	  failcom='fail=yes'; \
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+	case "$@" in \
+	  distclean-* | maintainer-clean-*) list='$(DIST_SUBDIRS)' ;; \
+	  *) list='$(SUBDIRS)' ;; \
+	esac; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
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+	$(am__define_uniq_tagged_files); mkid -fID $$unique
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+	if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \
+	  include_option=--etags-include; \
+	  empty_fix=.; \
+	else \
+	  include_option=--include; \
+	  empty_fix=; \
+	fi; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    test ! -f $$subdir/TAGS || \
+	      set "$$@" "$$include_option=$$here/$$subdir/TAGS"; \
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+	done; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
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+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
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+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
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+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-recursive
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
+	      || $(MKDIR_P) "$(distdir)/$$subdir" \
+	      || exit 1; \
+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
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+all-am: Makefile $(DATA)
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
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+clean-am: clean-generic mostlyclean-am
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+	-rm -f Makefile
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+
+install-html-am:
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+
+install-info-am:
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+install-man:
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+install-pdf: install-pdf-recursive
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+install-ps: install-ps-recursive
+
+install-ps-am:
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+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-recursive
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+pdf-am:
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+ps-am:
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+.MAKE: $(am__recursive_targets) install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-am clean clean-generic cscopelist-am ctags ctags-am \
+	distclean distclean-generic distclean-tags distdir dvi dvi-am \
+	html html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
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+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/web/server/static/README.md b/web/server/static/README.md
new file mode 100644
index 000000000..16febdb32
--- /dev/null
+++ b/web/server/static/README.md
@@ -0,0 +1,9 @@
+# `static-threaded` web server
+
+The `static-threaded` web server spawns a fixed number of threads.
+All the threads are concurrently listening for web requests on the same sockets.
+The kernel distributes the incoming requests to them.
+
+Each thread uses non-blocking I/O so it can serve any number of web requests in parallel.
+
+This web server respects the `keep-alive` HTTP header to serve multiple HTTP requests via the same connection. 
\ No newline at end of file
diff --git a/web/server/static/static-threaded.c b/web/server/static/static-threaded.c
new file mode 100644
index 000000000..56b8dbf8d
--- /dev/null
+++ b/web/server/static/static-threaded.c
@@ -0,0 +1,424 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define WEB_SERVER_INTERNALS 1
+#include "static-threaded.h"
+
+// ----------------------------------------------------------------------------
+// high level web clients connection management
+
+static struct web_client *web_client_create_on_fd(int fd, const char *client_ip, const char *client_port) {
+    struct web_client *w;
+
+    w = web_client_get_from_cache_or_allocate();
+    w->ifd = w->ofd = fd;
+
+    strncpyz(w->client_ip, client_ip, sizeof(w->client_ip) - 1);
+    strncpyz(w->client_port, client_port, sizeof(w->client_port) - 1);
+
+    if(unlikely(!*w->client_ip))   strcpy(w->client_ip,   "-");
+    if(unlikely(!*w->client_port)) strcpy(w->client_port, "-");
+
+    web_client_initialize_connection(w);
+    return(w);
+}
+
+// --------------------------------------------------------------------------------------
+// the main socket listener - STATIC-THREADED
+
+struct web_server_static_threaded_worker {
+    netdata_thread_t thread;
+
+    int id;
+    int running;
+
+    size_t max_sockets;
+
+    volatile size_t connected;
+    volatile size_t disconnected;
+    volatile size_t receptions;
+    volatile size_t sends;
+    volatile size_t max_concurrent;
+
+    volatile size_t files_read;
+    volatile size_t file_reads;
+};
+
+static long long static_threaded_workers_count = 1;
+static struct web_server_static_threaded_worker *static_workers_private_data = NULL;
+static __thread struct web_server_static_threaded_worker *worker_private = NULL;
+
+// ----------------------------------------------------------------------------
+
+static inline int web_server_check_client_status(struct web_client *w) {
+    if(unlikely(web_client_check_dead(w) || (!web_client_has_wait_receive(w) && !web_client_has_wait_send(w))))
+        return -1;
+
+    return 0;
+}
+
+// ----------------------------------------------------------------------------
+// web server files
+
+static void *web_server_file_add_callback(POLLINFO *pi, short int *events, void *data) {
+    struct web_client *w = (struct web_client *)data;
+
+    worker_private->files_read++;
+
+    debug(D_WEB_CLIENT, "%llu: ADDED FILE READ ON FD %d", w->id, pi->fd);
+    *events = POLLIN;
+    pi->data = w;
+    return w;
+}
+
+static void web_werver_file_del_callback(POLLINFO *pi) {
+    struct web_client *w = (struct web_client *)pi->data;
+    debug(D_WEB_CLIENT, "%llu: RELEASE FILE READ ON FD %d", w->id, pi->fd);
+
+    w->pollinfo_filecopy_slot = 0;
+
+    if(unlikely(!w->pollinfo_slot)) {
+        debug(D_WEB_CLIENT, "%llu: CROSS WEB CLIENT CLEANUP (iFD %d, oFD %d)", w->id, pi->fd, w->ofd);
+        web_client_release(w);
+    }
+}
+
+static int web_server_file_read_callback(POLLINFO *pi, short int *events) {
+    struct web_client *w = (struct web_client *)pi->data;
+
+    // if there is no POLLINFO linked to this, it means the client disconnected
+    // stop the file reading too
+    if(unlikely(!w->pollinfo_slot)) {
+        debug(D_WEB_CLIENT, "%llu: PREVENTED ATTEMPT TO READ FILE ON FD %d, ON CLOSED WEB CLIENT", w->id, pi->fd);
+        return -1;
+    }
+
+    if(unlikely(w->mode != WEB_CLIENT_MODE_FILECOPY || w->ifd == w->ofd)) {
+        debug(D_WEB_CLIENT, "%llu: PREVENTED ATTEMPT TO READ FILE ON FD %d, ON NON-FILECOPY WEB CLIENT", w->id, pi->fd);
+        return -1;
+    }
+
+    debug(D_WEB_CLIENT, "%llu: READING FILE ON FD %d", w->id, pi->fd);
+
+    worker_private->file_reads++;
+    ssize_t ret = unlikely(web_client_read_file(w));
+
+    if(likely(web_client_has_wait_send(w))) {
+        POLLJOB *p = pi->p;                                        // our POLLJOB
+        POLLINFO *wpi = pollinfo_from_slot(p, w->pollinfo_slot);  // POLLINFO of the client socket
+
+        debug(D_WEB_CLIENT, "%llu: SIGNALING W TO SEND (iFD %d, oFD %d)", w->id, pi->fd, wpi->fd);
+        p->fds[wpi->slot].events |= POLLOUT;
+    }
+
+    if(unlikely(ret <= 0 || w->ifd == w->ofd)) {
+        debug(D_WEB_CLIENT, "%llu: DONE READING FILE ON FD %d", w->id, pi->fd);
+        return -1;
+    }
+
+    *events = POLLIN;
+    return 0;
+}
+
+static int web_server_file_write_callback(POLLINFO *pi, short int *events) {
+    (void)pi;
+    (void)events;
+
+    error("Writing to web files is not supported!");
+
+    return -1;
+}
+
+// ----------------------------------------------------------------------------
+// web server clients
+
+static void *web_server_add_callback(POLLINFO *pi, short int *events, void *data) {
+    (void)data;
+
+    worker_private->connected++;
+
+    size_t concurrent = worker_private->connected - worker_private->disconnected;
+    if(unlikely(concurrent > worker_private->max_concurrent))
+        worker_private->max_concurrent = concurrent;
+
+    *events = POLLIN;
+
+    debug(D_WEB_CLIENT_ACCESS, "LISTENER on %d: new connection.", pi->fd);
+    struct web_client *w = web_client_create_on_fd(pi->fd, pi->client_ip, pi->client_port);
+    w->pollinfo_slot = pi->slot;
+
+    if(unlikely(pi->socktype == AF_UNIX))
+        web_client_set_unix(w);
+    else
+        web_client_set_tcp(w);
+
+    debug(D_WEB_CLIENT, "%llu: ADDED CLIENT FD %d", w->id, pi->fd);
+    return w;
+}
+
+// TCP client disconnected
+static void web_server_del_callback(POLLINFO *pi) {
+    worker_private->disconnected++;
+
+    struct web_client *w = (struct web_client *)pi->data;
+
+    w->pollinfo_slot = 0;
+    if(unlikely(w->pollinfo_filecopy_slot)) {
+        POLLINFO *fpi = pollinfo_from_slot(pi->p, w->pollinfo_filecopy_slot);  // POLLINFO of the client socket
+        (void)fpi;
+
+        debug(D_WEB_CLIENT, "%llu: THE CLIENT WILL BE FRED BY READING FILE JOB ON FD %d", w->id, fpi->fd);
+    }
+    else {
+        if(web_client_flag_check(w, WEB_CLIENT_FLAG_DONT_CLOSE_SOCKET))
+            pi->flags |= POLLINFO_FLAG_DONT_CLOSE;
+
+        debug(D_WEB_CLIENT, "%llu: CLOSING CLIENT FD %d", w->id, pi->fd);
+        web_client_release(w);
+    }
+}
+
+static int web_server_rcv_callback(POLLINFO *pi, short int *events) {
+    worker_private->receptions++;
+
+    struct web_client *w = (struct web_client *)pi->data;
+    int fd = pi->fd;
+
+    if(unlikely(web_client_receive(w) < 0))
+        return -1;
+
+    debug(D_WEB_CLIENT, "%llu: processing received data on fd %d.", w->id, fd);
+    web_client_process_request(w);
+
+    if(unlikely(w->mode == WEB_CLIENT_MODE_FILECOPY)) {
+        if(w->pollinfo_filecopy_slot == 0) {
+            debug(D_WEB_CLIENT, "%llu: FILECOPY DETECTED ON FD %d", w->id, pi->fd);
+
+            if (unlikely(w->ifd != -1 && w->ifd != w->ofd && w->ifd != fd)) {
+                // add a new socket to poll_events, with the same
+                debug(D_WEB_CLIENT, "%llu: CREATING FILECOPY SLOT ON FD %d", w->id, pi->fd);
+
+                POLLINFO *fpi = poll_add_fd(
+                        pi->p
+                        , w->ifd
+                        , 0
+                        , POLLINFO_FLAG_CLIENT_SOCKET
+                        , "FILENAME"
+                        , ""
+                        , web_server_file_add_callback
+                        , web_werver_file_del_callback
+                        , web_server_file_read_callback
+                        , web_server_file_write_callback
+                        , (void *) w
+                );
+
+                if(fpi)
+                    w->pollinfo_filecopy_slot = fpi->slot;
+                else {
+                    error("Failed to add filecopy fd. Closing client.");
+                    return -1;
+                }
+            }
+        }
+    }
+    else {
+        if(unlikely(w->ifd == fd && web_client_has_wait_receive(w)))
+            *events |= POLLIN;
+    }
+
+    if(unlikely(w->ofd == fd && web_client_has_wait_send(w)))
+        *events |= POLLOUT;
+
+    return web_server_check_client_status(w);
+}
+
+static int web_server_snd_callback(POLLINFO *pi, short int *events) {
+    worker_private->sends++;
+
+    struct web_client *w = (struct web_client *)pi->data;
+    int fd = pi->fd;
+
+    debug(D_WEB_CLIENT, "%llu: sending data on fd %d.", w->id, fd);
+
+    if(unlikely(web_client_send(w) < 0))
+        return -1;
+
+    if(unlikely(w->ifd == fd && web_client_has_wait_receive(w)))
+        *events |= POLLIN;
+
+    if(unlikely(w->ofd == fd && web_client_has_wait_send(w)))
+        *events |= POLLOUT;
+
+    return web_server_check_client_status(w);
+}
+
+static void web_server_tmr_callback(void *timer_data) {
+    worker_private = (struct web_server_static_threaded_worker *)timer_data;
+
+    static __thread RRDSET *st = NULL;
+    static __thread RRDDIM *rd_user = NULL, *rd_system = NULL;
+
+    if(unlikely(!st)) {
+        char id[100 + 1];
+        char title[100 + 1];
+
+        snprintfz(id, 100, "web_thread%d_cpu", worker_private->id + 1);
+        snprintfz(title, 100, "NetData web server thread No %d CPU usage", worker_private->id + 1);
+
+        st = rrdset_create_localhost(
+                "netdata"
+                , id
+                , NULL
+                , "web"
+                , "netdata.web_cpu"
+                , title
+                , "milliseconds/s"
+                , "web"
+                , "stats"
+                , 132000 + worker_private->id
+                , default_rrd_update_every
+                , RRDSET_TYPE_STACKED
+        );
+
+        rd_user   = rrddim_add(st, "user", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
+        rd_system = rrddim_add(st, "system", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
+    }
+    else
+        rrdset_next(st);
+
+    struct rusage rusage;
+    getrusage(RUSAGE_THREAD, &rusage);
+    rrddim_set_by_pointer(st, rd_user, rusage.ru_utime.tv_sec * 1000000ULL + rusage.ru_utime.tv_usec);
+    rrddim_set_by_pointer(st, rd_system, rusage.ru_stime.tv_sec * 1000000ULL + rusage.ru_stime.tv_usec);
+    rrdset_done(st);
+}
+
+// ----------------------------------------------------------------------------
+// web server worker thread
+
+static void socket_listen_main_static_threaded_worker_cleanup(void *ptr) {
+    worker_private = (struct web_server_static_threaded_worker *)ptr;
+
+    info("freeing local web clients cache...");
+    web_client_cache_destroy();
+
+    info("stopped after %zu connects, %zu disconnects (max concurrent %zu), %zu receptions and %zu sends",
+            worker_private->connected,
+            worker_private->disconnected,
+            worker_private->max_concurrent,
+            worker_private->receptions,
+            worker_private->sends
+    );
+
+    worker_private->running = 0;
+}
+
+void *socket_listen_main_static_threaded_worker(void *ptr) {
+    worker_private = (struct web_server_static_threaded_worker *)ptr;
+    worker_private->running = 1;
+
+    netdata_thread_cleanup_push(socket_listen_main_static_threaded_worker_cleanup, ptr);
+
+            poll_events(&api_sockets
+                        , web_server_add_callback
+                        , web_server_del_callback
+                        , web_server_rcv_callback
+                        , web_server_snd_callback
+                        , web_server_tmr_callback
+                        , web_allow_connections_from
+                        , NULL
+                        , web_client_first_request_timeout
+                        , web_client_timeout
+                        , default_rrd_update_every * 1000 // timer_milliseconds
+                        , ptr // timer_data
+                        , worker_private->max_sockets
+            );
+
+    netdata_thread_cleanup_pop(1);
+    return NULL;
+}
+
+
+// ----------------------------------------------------------------------------
+// web server main thread - also becomes a worker
+
+static void socket_listen_main_static_threaded_cleanup(void *ptr) {
+    struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
+    static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
+
+    int i, found = 0;
+    usec_t max = 2 * USEC_PER_SEC, step = 50000;
+
+    // we start from 1, - 0 is self
+    for(i = 1; i < static_threaded_workers_count; i++) {
+        if(static_workers_private_data[i].running) {
+            found++;
+            info("stopping worker %d", i + 1);
+            netdata_thread_cancel(static_workers_private_data[i].thread);
+        }
+        else
+            info("found stopped worker %d", i + 1);
+    }
+
+    while(found && max > 0) {
+        max -= step;
+        info("Waiting %d static web threads to finish...", found);
+        sleep_usec(step);
+        found = 0;
+
+        // we start from 1, - 0 is self
+        for(i = 1; i < static_threaded_workers_count; i++) {
+            if (static_workers_private_data[i].running)
+                found++;
+        }
+    }
+
+    if(found)
+        error("%d static web threads are taking too long to finish. Giving up.", found);
+
+    info("closing all web server sockets...");
+    listen_sockets_close(&api_sockets);
+
+    info("all static web threads stopped.");
+    static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
+}
+
+void *socket_listen_main_static_threaded(void *ptr) {
+    netdata_thread_cleanup_push(socket_listen_main_static_threaded_cleanup, ptr);
+            web_server_mode = WEB_SERVER_MODE_STATIC_THREADED;
+
+            if(!api_sockets.opened)
+                fatal("LISTENER: no listen sockets available.");
+
+            // 6 threads is the optimal value
+            // since 6 are the parallel connections browsers will do
+            // so, if the machine has more CPUs, avoid using resources unnecessarily
+            int def_thread_count = (processors > 6)?6:processors;
+
+            static_threaded_workers_count = config_get_number(CONFIG_SECTION_WEB, "web server threads", def_thread_count);
+            if(static_threaded_workers_count < 1) static_threaded_workers_count = 1;
+
+            size_t max_sockets = (size_t)config_get_number(CONFIG_SECTION_WEB, "web server max sockets", (long long int)(rlimit_nofile.rlim_cur / 2));
+
+            static_workers_private_data = callocz((size_t)static_threaded_workers_count, sizeof(struct web_server_static_threaded_worker));
+
+            web_server_is_multithreaded = (static_threaded_workers_count > 1);
+
+            int i;
+            for(i = 1; i < static_threaded_workers_count; i++) {
+                static_workers_private_data[i].id = i;
+                static_workers_private_data[i].max_sockets = max_sockets / static_threaded_workers_count;
+
+                char tag[50 + 1];
+                snprintfz(tag, 50, "WEB_SERVER[static%d]", i+1);
+
+                info("starting worker %d", i+1);
+                netdata_thread_create(&static_workers_private_data[i].thread, tag, NETDATA_THREAD_OPTION_DEFAULT, socket_listen_main_static_threaded_worker, (void *)&static_workers_private_data[i]);
+            }
+
+            // and the main one
+            static_workers_private_data[0].max_sockets = max_sockets / static_threaded_workers_count;
+            socket_listen_main_static_threaded_worker((void *)&static_workers_private_data[0]);
+
+    netdata_thread_cleanup_pop(1);
+    return NULL;
+}
diff --git a/web/server/static/static-threaded.h b/web/server/static/static-threaded.h
new file mode 100644
index 000000000..5f4862e5b
--- /dev/null
+++ b/web/server/static/static-threaded.h
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_WEB_SERVER_STATIC_THREADED_H
+#define NETDATA_WEB_SERVER_STATIC_THREADED_H
+
+#include "web/server/web_server.h"
+
+extern void *socket_listen_main_static_threaded(void *ptr);
+
+#endif //NETDATA_WEB_SERVER_STATIC_THREADED_H
diff --git a/src/web_client.c b/web/server/web_client.c
index 477fb3d57..282cfcd1a 100644
--- a/src/web_client.c
+++ b/web/server/web_client.c
@@ -1,4 +1,6 @@
-#include "common.h"
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "web_client.h"
 
 // this is an async I/O implementation of the web server request parser
 // it is used by all netdata web servers
@@ -53,6 +55,18 @@ static inline int web_client_uncrock_socket(struct web_client *w) {
     return 0;
 }
 
+static inline char *strip_control_characters(char *url) {
+    char *s = url;
+    if(!s) return "";
+
+    if(iscntrl(*s)) *s = ' ';
+    while(*++s) {
+        if(iscntrl(*s)) *s = ' ';
+    }
+
+    return url;
+}
+
 void web_client_request_done(struct web_client *w) {
     web_client_uncrock_socket(w);
 
@@ -120,7 +134,7 @@ void web_client_request_done(struct web_client *w) {
                    , dt_usec(&tv, &w->tv_ready) / 1000.0
                    , dt_usec(&tv, &w->tv_in) / 1000.0
                    , w->response.code
-                   , w->last_url
+                   , strip_control_characters(w->last_url)
         );
     }
 
@@ -329,10 +343,6 @@ int mysendfile(struct web_client *w, char *filename) {
     // skip leading slashes
     while (*filename == '/') filename++;
 
-    // if the filename contain known paths, skip them
-    if(strncmp(filename, WEB_PATH_FILE "/", strlen(WEB_PATH_FILE) + 1) == 0)
-        filename = &filename[strlen(WEB_PATH_FILE) + 1];
-
     // if the filename contains "strange" characters, refuse to serve it
     char *s;
     for(s = filename; *s ;s++) {
@@ -403,7 +413,7 @@ int mysendfile(struct web_client *w, char *filename) {
         if(errno == EBUSY || errno == EAGAIN) {
             error("%llu: File '%s' is busy, sending 307 Moved Temporarily to force retry.", w->id, webfilename);
             w->response.data->contenttype = CT_TEXT_HTML;
-            buffer_sprintf(w->response.header, "Location: /" WEB_PATH_FILE "/%s\r\n", filename);
+            buffer_sprintf(w->response.header, "Location: /%s\r\n", filename);
             buffer_strcat(w->response.data, "File is currently busy, please try again later: ");
             buffer_strcat_htmlescape(w->response.data, webfilename);
             return 307;
@@ -550,31 +560,6 @@ void buffer_data_options2string(BUFFER *wb, uint32_t options) {
     }
 }
 
-const char *group_method2string(int group) {
-    switch(group) {
-        case GROUP_UNDEFINED:
-            return "";
-
-        case GROUP_AVERAGE:
-            return "average";
-
-        case GROUP_MIN:
-            return "min";
-
-        case GROUP_MAX:
-            return "max";
-
-        case GROUP_SUM:
-            return "sum";
-
-        case GROUP_INCREMENTAL_SUM:
-            return "incremental-sum";
-
-        default:
-            return "unknown-group-method";
-    }
-}
-
 static inline int check_host_and_call(RRDHOST *host, struct web_client *w, char *url, int (*func)(RRDHOST *, struct web_client *, char *)) {
     if(unlikely(host->rrd_memory_mode == RRD_MEMORY_MODE_NONE)) {
         buffer_flush(w->response.data);
@@ -898,7 +883,7 @@ static inline HTTP_VALIDATION http_request_validate(struct web_client *w) {
                 *ue = ' ';
                 
                 // copy the URL - we are going to overwrite parts of it
-                // FIXME -- we should avoid it
+                // TODO -- ideally we we should avoid copying buffers around
                 strncpyz(w->last_url, w->decoded_url, NETDATA_WEB_REQUEST_URL_SIZE);
 
                 w->header_parse_tries = 0;
@@ -1114,11 +1099,6 @@ static inline int web_client_process_url(RRDHOST *host, struct web_client *w, ch
     static uint32_t
             hash_api = 0,
             hash_netdata_conf = 0,
-            hash_data = 0,
-            hash_datasource = 0,
-            hash_graph = 0,
-            hash_list = 0,
-            hash_all_json = 0,
             hash_host = 0;
 
 #ifdef NETDATA_INTERNAL_CHECKS
@@ -1128,11 +1108,6 @@ static inline int web_client_process_url(RRDHOST *host, struct web_client *w, ch
     if(unlikely(!hash_api)) {
         hash_api = simple_hash("api");
         hash_netdata_conf = simple_hash("netdata.conf");
-        hash_data = simple_hash(WEB_PATH_DATA);
-        hash_datasource = simple_hash(WEB_PATH_DATASOURCE);
-        hash_graph = simple_hash(WEB_PATH_GRAPH);
-        hash_list = simple_hash("list");
-        hash_all_json = simple_hash("all.json");
         hash_host = simple_hash("host");
 #ifdef NETDATA_INTERNAL_CHECKS
         hash_exit = simple_hash("exit");
@@ -1154,26 +1129,6 @@ static inline int web_client_process_url(RRDHOST *host, struct web_client *w, ch
             debug(D_WEB_CLIENT_ACCESS, "%llu: host switch request ...", w->id);
             return web_client_switch_host(host, w, url);
         }
-        else if(unlikely(hash == hash_data && strcmp(tok, WEB_PATH_DATA) == 0)) {             // old API "data"
-            debug(D_WEB_CLIENT_ACCESS, "%llu: old API data request...", w->id);
-            return check_host_and_dashboard_acl_and_call(host, w, url, web_client_api_old_data_request_json);
-        }
-        else if(unlikely(hash == hash_datasource && strcmp(tok, WEB_PATH_DATASOURCE) == 0)) { // old API "datasource"
-            debug(D_WEB_CLIENT_ACCESS, "%llu: old API datasource request...", w->id);
-            return check_host_and_dashboard_acl_and_call(host, w, url, web_client_api_old_data_request_jsonp);
-        }
-        else if(unlikely(hash == hash_graph && strcmp(tok, WEB_PATH_GRAPH) == 0)) {           // old API "graph"
-            debug(D_WEB_CLIENT_ACCESS, "%llu: old API graph request...", w->id);
-            return check_host_and_dashboard_acl_and_call(host, w, url, web_client_api_old_graph_request);
-        }
-        else if(unlikely(hash == hash_list && strcmp(tok, "list") == 0)) {                    // old API "list"
-            debug(D_WEB_CLIENT_ACCESS, "%llu: old API list request...", w->id);
-            return check_host_and_dashboard_acl_and_call(host, w, url, web_client_api_old_list_request);
-        }
-        else if(unlikely(hash == hash_all_json && strcmp(tok, "all.json") == 0)) {            // old API "all.json"
-            debug(D_WEB_CLIENT_ACCESS, "%llu: old API all.json request...", w->id);
-            return check_host_and_dashboard_acl_and_call(host, w, url, web_client_api_old_all_json);
-        }
         else if(unlikely(hash == hash_netdata_conf && strcmp(tok, "netdata.conf") == 0)) {    // netdata.conf
             if(unlikely(!web_client_can_access_netdataconf(w)))
                 return web_client_permission_denied(w);
@@ -1638,6 +1593,8 @@ ssize_t web_client_read_file(struct web_client *w)
     ssize_t bytes = read(w->ifd, &w->response.data->buffer[w->response.data->len], (size_t)left);
     if(likely(bytes > 0)) {
         size_t old = w->response.data->len;
+        (void)old;
+
         w->response.data->len += bytes;
         w->response.data->buffer[w->response.data->len] = '\0';
 
@@ -1691,6 +1648,8 @@ ssize_t web_client_receive(struct web_client *w)
         w->stats_received_bytes += bytes;
 
         size_t old = w->response.data->len;
+        (void)old;
+
         w->response.data->len += bytes;
         w->response.data->buffer[w->response.data->len] = '\0';
 
diff --git a/src/web_client.h b/web/server/web_client.h
index b495c37e1..b9e528fca 100644
--- a/src/web_client.h
+++ b/web/server/web_client.h
@@ -1,6 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_WEB_CLIENT_H
 #define NETDATA_WEB_CLIENT_H 1
 
+#include "libnetdata/libnetdata.h"
+
 #ifdef NETDATA_WITH_ZLIB
 extern int web_enable_gzip,
         web_gzip_level,
@@ -70,6 +74,7 @@ typedef enum web_client_flags {
 #define web_client_set_tcp(w) web_client_flag_set(w, WEB_CLIENT_FLAG_TCP_CLIENT)
 #define web_client_set_unix(w) web_client_flag_set(w, WEB_CLIENT_FLAG_UNIX_CLIENT)
 #define web_client_check_unix(w) web_client_flag_check(w, WEB_CLIENT_FLAG_UNIX_CLIENT)
+#define web_client_check_tcp(w) web_client_flag_check(w, WEB_CLIENT_FLAG_TCP_CLIENT)
 
 #define web_client_is_corkable(w) web_client_flag_check(w, WEB_CLIENT_FLAG_TCP_CLIENT)
 
@@ -98,7 +103,7 @@ struct response {
     Bytef zbuffer[NETDATA_WEB_RESPONSE_ZLIB_CHUNK_SIZE]; // temporary buffer for storing compressed output
     size_t zsent;                   // the compressed bytes we have sent to the client
     size_t zhave;                   // the compressed bytes that we have received from zlib
-    int zinitialized:1;
+    unsigned int zinitialized:1;
 #endif /* NETDATA_WITH_ZLIB */
 
 };
@@ -179,11 +184,10 @@ extern ssize_t web_client_read_file(struct web_client *w);
 extern void web_client_process_request(struct web_client *w);
 extern void web_client_request_done(struct web_client *w);
 
-extern int web_client_api_request_v1_data_group(char *name, int def);
-extern const char *group_method2string(int group);
-
 extern void buffer_data_options2string(BUFFER *wb, uint32_t options);
 
 extern int mysendfile(struct web_client *w, char *filename);
 
+#include "daemon/common.h"
+
 #endif
diff --git a/web/server/web_client_cache.c b/web/server/web_client_cache.c
new file mode 100644
index 000000000..ab470560e
--- /dev/null
+++ b/web/server/web_client_cache.c
@@ -0,0 +1,231 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define WEB_SERVER_INTERNALS 1
+#include "web_client_cache.h"
+
+// ----------------------------------------------------------------------------
+// allocate and free web_clients
+
+static void web_client_zero(struct web_client *w) {
+    // zero everything about it - but keep the buffers
+
+    // remember the pointers to the buffers
+    BUFFER *b1 = w->response.data;
+    BUFFER *b2 = w->response.header;
+    BUFFER *b3 = w->response.header_output;
+
+    // empty the buffers
+    buffer_flush(b1);
+    buffer_flush(b2);
+    buffer_flush(b3);
+
+    freez(w->user_agent);
+
+    // zero everything
+    memset(w, 0, sizeof(struct web_client));
+
+    // restore the pointers of the buffers
+    w->response.data = b1;
+    w->response.header = b2;
+    w->response.header_output = b3;
+}
+
+static void web_client_free(struct web_client *w) {
+    buffer_free(w->response.header_output);
+    buffer_free(w->response.header);
+    buffer_free(w->response.data);
+    freez(w->user_agent);
+    freez(w);
+}
+
+static struct web_client *web_client_alloc(void) {
+    struct web_client *w = callocz(1, sizeof(struct web_client));
+    w->response.data = buffer_create(NETDATA_WEB_RESPONSE_INITIAL_SIZE);
+    w->response.header = buffer_create(NETDATA_WEB_RESPONSE_HEADER_SIZE);
+    w->response.header_output = buffer_create(NETDATA_WEB_RESPONSE_HEADER_SIZE);
+    return w;
+}
+
+// ----------------------------------------------------------------------------
+// web clients caching
+
+// When clients connect and disconnect, avoid allocating and releasing memory.
+// Instead, when new clients get connected, reuse any memory previously allocated
+// for serving web clients that are now disconnected.
+
+// The size of the cache is adaptive. It caches the structures of 2x
+// the number of currently connected clients.
+
+// Comments per server:
+// SINGLE-THREADED : 1 cache is maintained
+// MULTI-THREADED  : 1 cache is maintained
+// STATIC-THREADED : 1 cache for each thred of the web server
+
+__thread struct clients_cache web_clients_cache = {
+        .pid = 0,
+        .used = NULL,
+        .used_count = 0,
+        .avail = NULL,
+        .avail_count = 0,
+        .allocated = 0,
+        .reused = 0
+};
+
+inline void web_client_cache_verify(int force) {
+#ifdef NETDATA_INTERNAL_CHECKS
+    static __thread size_t count = 0;
+    count++;
+
+    if(unlikely(force || count > 1000)) {
+        count = 0;
+
+        struct web_client *w;
+        size_t used = 0, avail = 0;
+        for(w = web_clients_cache.used; w ; w = w->next) used++;
+        for(w = web_clients_cache.avail; w ; w = w->next) avail++;
+
+        info("web_client_cache has %zu (%zu) used and %zu (%zu) available clients, allocated %zu, reused %zu (hit %zu%%)."
+             , used, web_clients_cache.used_count
+             , avail, web_clients_cache.avail_count
+             , web_clients_cache.allocated
+             , web_clients_cache.reused
+             , (web_clients_cache.allocated + web_clients_cache.reused)?(web_clients_cache.reused * 100 / (web_clients_cache.allocated + web_clients_cache.reused)):0
+        );
+    }
+#else
+    if(unlikely(force)) {
+        info("web_client_cache has %zu used and %zu available clients, allocated %zu, reused %zu (hit %zu%%)."
+             , web_clients_cache.used_count
+             , web_clients_cache.avail_count
+             , web_clients_cache.allocated
+             , web_clients_cache.reused
+             , (web_clients_cache.allocated + web_clients_cache.reused)?(web_clients_cache.reused * 100 / (web_clients_cache.allocated + web_clients_cache.reused)):0
+            );
+    }
+#endif
+}
+
+// destroy the cache and free all the memory it uses
+void web_client_cache_destroy(void) {
+#ifdef NETDATA_INTERNAL_CHECKS
+    if(unlikely(web_clients_cache.pid != 0 && web_clients_cache.pid != gettid()))
+        error("Oops! wrong thread accessing the cache. Expected %d, found %d", (int)web_clients_cache.pid, (int)gettid());
+
+    web_client_cache_verify(1);
+#endif
+
+    netdata_thread_disable_cancelability();
+
+    struct web_client *w, *t;
+
+    w = web_clients_cache.used;
+    while(w) {
+        t = w;
+        w = w->next;
+        web_client_free(t);
+    }
+    web_clients_cache.used = NULL;
+    web_clients_cache.used_count = 0;
+
+    w = web_clients_cache.avail;
+    while(w) {
+        t = w;
+        w = w->next;
+        web_client_free(t);
+    }
+    web_clients_cache.avail = NULL;
+    web_clients_cache.avail_count = 0;
+
+    netdata_thread_enable_cancelability();
+}
+
+struct web_client *web_client_get_from_cache_or_allocate() {
+
+#ifdef NETDATA_INTERNAL_CHECKS
+    if(unlikely(web_clients_cache.pid == 0))
+        web_clients_cache.pid = gettid();
+
+    if(unlikely(web_clients_cache.pid != 0 && web_clients_cache.pid != gettid()))
+        error("Oops! wrong thread accessing the cache. Expected %d, found %d", (int)web_clients_cache.pid, (int)gettid());
+#endif
+
+    netdata_thread_disable_cancelability();
+
+    struct web_client *w = web_clients_cache.avail;
+
+    if(w) {
+        // get it from avail
+        if (w == web_clients_cache.avail) web_clients_cache.avail = w->next;
+        if(w->prev) w->prev->next = w->next;
+        if(w->next) w->next->prev = w->prev;
+        web_clients_cache.avail_count--;
+        web_client_zero(w);
+        web_clients_cache.reused++;
+    }
+    else {
+        // allocate it
+        w = web_client_alloc();
+        web_clients_cache.allocated++;
+    }
+
+    // link it to used web clients
+    if (web_clients_cache.used) web_clients_cache.used->prev = w;
+    w->next = web_clients_cache.used;
+    w->prev = NULL;
+    web_clients_cache.used = w;
+    web_clients_cache.used_count++;
+
+    // initialize it
+    w->id = web_client_connected();
+    w->mode = WEB_CLIENT_MODE_NORMAL;
+
+    netdata_thread_enable_cancelability();
+
+    return w;
+}
+
+void web_client_release(struct web_client *w) {
+#ifdef NETDATA_INTERNAL_CHECKS
+    if(unlikely(web_clients_cache.pid != 0 && web_clients_cache.pid != gettid()))
+        error("Oops! wrong thread accessing the cache. Expected %d, found %d", (int)web_clients_cache.pid, (int)gettid());
+
+    if(unlikely(w->running))
+        error("%llu: releasing web client from %s port %s, but it still running.", w->id, w->client_ip, w->client_port);
+#endif
+
+    debug(D_WEB_CLIENT_ACCESS, "%llu: Closing web client from %s port %s.", w->id, w->client_ip, w->client_port);
+
+    web_server_log_connection(w, "DISCONNECTED");
+    web_client_request_done(w);
+    web_client_disconnected();
+
+    netdata_thread_disable_cancelability();
+
+    if(web_server_mode != WEB_SERVER_MODE_STATIC_THREADED) {
+        if (w->ifd != -1) close(w->ifd);
+        if (w->ofd != -1 && w->ofd != w->ifd) close(w->ofd);
+        w->ifd = w->ofd = -1;
+    }
+
+    // unlink it from the used
+    if (w == web_clients_cache.used) web_clients_cache.used = w->next;
+    if(w->prev) w->prev->next = w->next;
+    if(w->next) w->next->prev = w->prev;
+    web_clients_cache.used_count--;
+
+    if(web_clients_cache.avail_count >= 2 * web_clients_cache.used_count) {
+        // we have too many of them - free it
+        web_client_free(w);
+    }
+    else {
+        // link it to the avail
+        if (web_clients_cache.avail) web_clients_cache.avail->prev = w;
+        w->next = web_clients_cache.avail;
+        w->prev = NULL;
+        web_clients_cache.avail = w;
+        web_clients_cache.avail_count++;
+    }
+
+    netdata_thread_enable_cancelability();
+}
+
diff --git a/web/server/web_client_cache.h b/web/server/web_client_cache.h
new file mode 100644
index 000000000..f63888000
--- /dev/null
+++ b/web/server/web_client_cache.h
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_WEB_CLIENT_CACHE_H
+#define NETDATA_WEB_CLIENT_CACHE_H
+
+#include "libnetdata/libnetdata.h"
+#include "web_client.h"
+
+struct clients_cache {
+    pid_t pid;
+
+    struct web_client *used;    // the structures of the currently connected clients
+    size_t used_count;          // the count the currently connected clients
+
+    struct web_client *avail;   // the cached structures, available for future clients
+    size_t avail_count;         // the number of cached structures
+
+    size_t reused;              // the number of re-uses
+    size_t allocated;           // the number of allocations
+};
+
+extern __thread struct clients_cache web_clients_cache;
+
+extern void web_client_release(struct web_client *w);
+extern struct web_client *web_client_get_from_cache_or_allocate();
+extern void web_client_cache_destroy(void);
+extern void web_client_cache_verify(int force);
+
+#include "web_server.h"
+
+#endif //NETDATA_WEB_CLIENT_CACHE_H
diff --git a/web/server/web_server.c b/web/server/web_server.c
new file mode 100644
index 000000000..5a68b125e
--- /dev/null
+++ b/web/server/web_server.c
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define WEB_SERVER_INTERNALS 1
+#include "web_server.h"
+
+// this file includes 3 web servers:
+//
+// 1. single-threaded, based on select()
+// 2. multi-threaded, based on poll() that spawns threads to handle the requests, based on select()
+// 3. static-threaded, based on poll() using a fixed number of threads (configured at netdata.conf)
+
+WEB_SERVER_MODE web_server_mode = WEB_SERVER_MODE_STATIC_THREADED;
+
+// --------------------------------------------------------------------------------------
+
+WEB_SERVER_MODE web_server_mode_id(const char *mode) {
+    if(!strcmp(mode, "none"))
+        return WEB_SERVER_MODE_NONE;
+    else if(!strcmp(mode, "single") || !strcmp(mode, "single-threaded"))
+        return WEB_SERVER_MODE_SINGLE_THREADED;
+    else if(!strcmp(mode, "static") || !strcmp(mode, "static-threaded"))
+        return WEB_SERVER_MODE_STATIC_THREADED;
+    else // if(!strcmp(mode, "multi") || !strcmp(mode, "multi-threaded"))
+        return WEB_SERVER_MODE_MULTI_THREADED;
+}
+
+const char *web_server_mode_name(WEB_SERVER_MODE id) {
+    switch(id) {
+        case WEB_SERVER_MODE_NONE:
+            return "none";
+
+        case WEB_SERVER_MODE_SINGLE_THREADED:
+            return "single-threaded";
+
+        case WEB_SERVER_MODE_STATIC_THREADED:
+            return "static-threaded";
+
+        default:
+        case WEB_SERVER_MODE_MULTI_THREADED:
+            return "multi-threaded";
+    }
+}
+
+// --------------------------------------------------------------------------------------
+// API sockets
+
+LISTEN_SOCKETS api_sockets = {
+        .config          = &netdata_config,
+        .config_section  = CONFIG_SECTION_WEB,
+        .default_bind_to = "*",
+        .default_port    = API_LISTEN_PORT,
+        .backlog         = API_LISTEN_BACKLOG
+};
+
+int api_listen_sockets_setup(void) {
+    int socks = listen_sockets_setup(&api_sockets);
+
+    if(!socks)
+        fatal("LISTENER: Cannot listen on any API socket. Exiting...");
+
+    return socks;
+}
+
+
+// --------------------------------------------------------------------------------------
+// access lists
+
+SIMPLE_PATTERN *web_allow_connections_from = NULL;
+SIMPLE_PATTERN *web_allow_streaming_from = NULL;
+SIMPLE_PATTERN *web_allow_netdataconf_from = NULL;
+
+// WEB_CLIENT_ACL
+SIMPLE_PATTERN *web_allow_dashboard_from = NULL;
+SIMPLE_PATTERN *web_allow_registry_from = NULL;
+SIMPLE_PATTERN *web_allow_badges_from = NULL;
+
+void web_client_update_acl_matches(struct web_client *w) {
+    w->acl = WEB_CLIENT_ACL_NONE;
+
+    if(!web_allow_dashboard_from || simple_pattern_matches(web_allow_dashboard_from, w->client_ip))
+        w->acl |= WEB_CLIENT_ACL_DASHBOARD;
+
+    if(!web_allow_registry_from || simple_pattern_matches(web_allow_registry_from, w->client_ip))
+        w->acl |= WEB_CLIENT_ACL_REGISTRY;
+
+    if(!web_allow_badges_from || simple_pattern_matches(web_allow_badges_from, w->client_ip))
+        w->acl |= WEB_CLIENT_ACL_BADGE;
+}
+
+
+// --------------------------------------------------------------------------------------
+
+void web_server_log_connection(struct web_client *w, const char *msg) {
+    log_access("%llu: %d '[%s]:%s' '%s'", w->id, gettid(), w->client_ip, w->client_port, msg);
+}
+
+// --------------------------------------------------------------------------------------
+
+void web_client_initialize_connection(struct web_client *w) {
+    int flag = 1;
+
+    if(unlikely(web_client_check_tcp(w) && setsockopt(w->ifd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) != 0))
+        debug(D_WEB_CLIENT, "%llu: failed to enable TCP_NODELAY on socket fd %d.", w->id, w->ifd);
+
+    flag = 1;
+    if(unlikely(setsockopt(w->ifd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int)) != 0))
+        debug(D_WEB_CLIENT, "%llu: failed to enable SO_KEEPALIVE on socket fd %d.", w->id, w->ifd);
+
+    web_client_update_acl_matches(w);
+
+    w->origin[0] = '*'; w->origin[1] = '\0';
+    w->cookie1[0] = '\0'; w->cookie2[0] = '\0';
+    freez(w->user_agent); w->user_agent = NULL;
+
+    web_client_enable_wait_receive(w);
+
+    web_server_log_connection(w, "CONNECTED");
+
+    web_client_cache_verify(0);
+}
+
+struct web_client *web_client_create_on_listenfd(int listener) {
+    struct web_client *w;
+
+    w = web_client_get_from_cache_or_allocate();
+    w->ifd = w->ofd = accept_socket(listener, SOCK_NONBLOCK, w->client_ip, sizeof(w->client_ip), w->client_port, sizeof(w->client_port), web_allow_connections_from);
+
+    if(unlikely(!*w->client_ip))   strcpy(w->client_ip,   "-");
+    if(unlikely(!*w->client_port)) strcpy(w->client_port, "-");
+
+    if (w->ifd == -1) {
+        if(errno == EPERM)
+            web_server_log_connection(w, "ACCESS DENIED");
+        else {
+            web_server_log_connection(w, "CONNECTION FAILED");
+            error("%llu: Failed to accept new incoming connection.", w->id);
+        }
+
+        web_client_release(w);
+        return NULL;
+    }
+
+    web_client_initialize_connection(w);
+    return(w);
+}
+
diff --git a/src/web_server.h b/web/server/web_server.h
index 7492547ef..7777c8978 100644
--- a/src/web_server.h
+++ b/web/server/web_server.h
@@ -1,10 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef NETDATA_WEB_SERVER_H
 #define NETDATA_WEB_SERVER_H 1
 
-#define WEB_PATH_FILE               "file"
-#define WEB_PATH_DATA               "data"
-#define WEB_PATH_DATASOURCE         "datasource"
-#define WEB_PATH_GRAPH              "graph"
+#include "libnetdata/libnetdata.h"
+#include "web_client.h"
 
 #ifndef API_LISTEN_PORT
 #define API_LISTEN_PORT 19999
@@ -33,14 +33,28 @@ extern WEB_SERVER_MODE web_server_mode;
 extern WEB_SERVER_MODE web_server_mode_id(const char *mode);
 extern const char *web_server_mode_name(WEB_SERVER_MODE id);
 
-extern void *socket_listen_main_multi_threaded(void *ptr);
-extern void *socket_listen_main_single_threaded(void *ptr);
-extern void *socket_listen_main_static_threaded(void *ptr);
 extern int api_listen_sockets_setup(void);
 
 #define DEFAULT_TIMEOUT_TO_RECEIVE_FIRST_WEB_REQUEST 60
 #define DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS 60
 extern int web_client_timeout;
 extern int web_client_first_request_timeout;
+extern long web_client_streaming_rate_t;
+
+#ifdef WEB_SERVER_INTERNALS
+extern LISTEN_SOCKETS api_sockets;
+extern void web_client_update_acl_matches(struct web_client *w);
+extern void web_server_log_connection(struct web_client *w, const char *msg);
+extern void web_client_initialize_connection(struct web_client *w);
+extern struct web_client *web_client_create_on_listenfd(int listener);
+
+#include "web_client_cache.h"
+#endif // WEB_SERVER_INTERNALS
+
+#include "single/single-threaded.h"
+#include "multi/multi-threaded.h"
+#include "static/static-threaded.h"
+
+#include "daemon/common.h"
 
 #endif /* NETDATA_WEB_SERVER_H */
diff --git a/web/version.txt b/web/version.txt
deleted file mode 100644
index 1aebd3503..000000000
--- a/web/version.txt
+++ /dev/null
@@ -1 +0,0 @@
-c92349444f88427d8ddef2fb1ac6c4932cf6c8bb