New upstream version 1.7.0+dfsgupstream/1.7.0+dfsg

19 files changed, 581 insertions, 19 deletions

diff --git a/contrib/Makefile.am b/contrib/Makefile.am
index b58b40e2..15e9c000 100644
--- a/contrib/Makefile.am
+++ b/contrib/Makefile.am
@@ -21,6 +21,7 @@ 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 29db296a..a10dfa97 100644
--- a/contrib/Makefile.in
+++ b/contrib/Makefile.in
@@ -1,9 +1,8 @@
-# Makefile.in generated by automake 1.11.3 from Makefile.am.
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
-# Foundation, Inc.
+# 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.
@@ -17,6 +16,51 @@
 
 
 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 $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
 pkgdatadir = $(datadir)/@PACKAGE@
 pkgincludedir = $(includedir)/@PACKAGE@
 pkglibdir = $(libdir)/@PACKAGE@
@@ -36,8 +80,8 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 subdir = contrib
-DIST_COMMON = $(dist_noinst_DATA) $(dist_noinst_SCRIPTS) \
-	$(srcdir)/Makefile.am $(srcdir)/Makefile.in
+DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
+	$(dist_noinst_SCRIPTS) $(dist_noinst_DATA)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
 	$(top_srcdir)/m4/ax_c__generic.m4 $(top_srcdir)/m4/ax_c_lto.m4 \
@@ -54,12 +98,31 @@ CONFIG_HEADER = $(top_builddir)/config.h
 CONFIG_CLEAN_FILES =
 CONFIG_CLEAN_VPATH_FILES =
 SCRIPTS = $(dist_noinst_SCRIPTS)
+AM_V_P = $(am__v_P_@AM_V@)
+am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
+am__v_P_0 = false
+am__v_P_1 = :
+AM_V_GEN = $(am__v_GEN_@AM_V@)
+am__v_GEN_ = $(am__v_GEN_@AM_DEFAULT_V@)
+am__v_GEN_0 = @echo "  GEN     " $@;
+am__v_GEN_1 = 
+AM_V_at = $(am__v_at_@AM_V@)
+am__v_at_ = $(am__v_at_@AM_DEFAULT_V@)
+am__v_at_0 = @
+am__v_at_1 = 
 SOURCES =
 DIST_SOURCES =
+am__can_run_installinfo = \
+  case $$AM_UPDATE_INFO_DIR in \
+    n|no|NO) false;; \
+    *) (install-info --version) >/dev/null 2>&1;; \
+  esac
 DATA = $(dist_noinst_DATA)
+am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
+AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
 AUTOCONF = @AUTOCONF@
 AUTOHEADER = @AUTOHEADER@
 AUTOMAKE = @AUTOMAKE@
@@ -223,6 +286,7 @@ dist_noinst_DATA = \
 
 dist_noinst_SCRIPTS = \
 	debian/netdata.init \
+	nc-backend.sh \
 	$(NULL)
 
 all: all-am
@@ -258,11 +322,11 @@ $(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):
-tags: TAGS
-TAGS:
+tags TAGS:
+
+ctags CTAGS:
 
-ctags: CTAGS
-CTAGS:
+cscope cscopelist:
 
 
 distdir: $(DISTFILES)
@@ -398,15 +462,16 @@ uninstall-am:
 
 .MAKE: install-am install-strip
 
-.PHONY: all all-am check check-am clean clean-generic 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 uninstall uninstall-am
+.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
 
 
 debian/changelog:
diff --git a/contrib/debian/changelog b/contrib/debian/changelog
new file mode 100644
index 00000000..bfb07054
--- /dev/null
+++ b/contrib/debian/changelog
@@ -0,0 +1,3 @@
+netdata (1.7.0) UNRELEASED; urgency=medium
+  * Latest release
+ -- Netdata Team <>  Sun, 16 Jul 2017 19:28:33 +0000
diff --git a/contrib/debian/compat b/contrib/debian/compat
new file mode 100644
index 00000000..ec635144
--- /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 00000000..24c5f4c4
--- /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/firehol/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 00000000..4103908a
--- /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/firehol/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 00000000..11a3d639
--- /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/firehol/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 00000000..a963d80b
--- /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 00000000..9e7f8ae6
--- /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 00000000..56631abf
--- /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 00000000..c1b2b74d
--- /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 00000000..45d42b63
--- /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 00000000..45b2d868
--- /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 00000000..29615f54
--- /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 00000000..4ab4eead
--- /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 00000000..e5d3a386
--- /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 00000000..ec4ec418
--- /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 $(CURDIR)/debian/netdata.conffiles
diff --git a/contrib/debian/source/format b/contrib/debian/source/format
new file mode 100644
index 00000000..89ae9db8
--- /dev/null
+++ b/contrib/debian/source/format
@@ -0,0 +1 @@
+3.0 (native)
diff --git a/contrib/nc-backend.sh b/contrib/nc-backend.sh
new file mode 100755
index 00000000..aac5c20b
--- /dev/null
+++ b/contrib/nc-backend.sh
@@ -0,0 +1,151 @@
+#!/usr/bin/env bash
+
+MODE="${1}"
+MY_PORT="${2}"
+BACKEND_HOST="${3}"
+BACKEND_PORT="${4}"
+FILE="${NETDATA_NC_BACKEND_DIR-/tmp}/netdata-nc-backend-${MY_PORT}"
+
+log() {
+	logger --stderr --id=$$ --tag "netdata-nc-backend" "${*}"
+}
+
+mync() {
+	local ret
+
+	log "Running: nc ${*}"
+	nc "${@}"
+	ret=$?
+
+	log "nc stopped with return code ${ret}."
+
+	return ${ret}
+}
+
+listen_save_replay_forever() {
+	local file="${1}" port="${2}" real_backend_host="${3}" real_backend_port="${4}" ret delay=1 started ended
+
+	while [ 1 ]
+	do
+		log "Starting nc to listen on port ${port} and save metrics to ${file}"
+		
+		started=$(date +%s)
+		mync -l -p "${port}" | tee -a -p --output-error=exit "${file}"
+		ended=$(date +%s)
+		
+		if [ -s "${file}" ]
+			then
+			if [ ! -z "${real_backend_host}" -a ! -z "${real_backend_port}" ]
+				then
+				log "Attempting to send the metrics to the real backend at ${real_backend_host}:${real_backend_port}"
+				
+				mync "${real_backend_host}" "${real_backend_port}" <"${file}"
+				ret=$?
+
+				if [ ${ret} -eq 0 ]
+					then
+					log "Successfuly sent the metrics to ${real_backend_host}:${real_backend_port}"
+					mv "${file}" "${file}.old"
+					touch "${file}"
+				else
+					log "Failed to send the metrics to ${real_backend_host}:${real_backend_port} (nc returned ${ret}) - appending more data to ${file}"
+				fi
+			else
+				log "No backend configured - appending more data to ${file}"
+			fi
+		fi
+
+		# prevent a CPU hungry infinite loop
+		# if nc cannot listen to port
+		if [ $((ended - started)) -lt 5 ]
+			then
+			log "nc has been stopped too fast."
+			delay=30
+		else
+			delay=1
+		fi
+
+		log "Waiting ${delay} seconds before listening again for data."
+		sleep ${delay}
+	done
+}
+
+if [ "${MODE}" = "start" ]
+	then
+
+	# start the listener, in exclusive mode
+	# only one can use the same file/port at a time
+	{
+		flock -n 9
+		if [ $? -ne 0 ]
+			then
+			log "Cannot get exclusive lock on file ${FILE}.lock - Am I running multiple times?"
+			exit 2
+		fi
+
+		# save our PID to the lock file
+		echo "$$" >"${FILE}.lock"
+
+		listen_save_replay_forever "${FILE}" ${MY_PORT} ${BACKEND_HOST} ${BACKEND_PORT}
+		ret=$?
+
+		log "listener exited."
+		exit ${ret}
+
+	} 9>>"${FILE}.lock"
+
+	# we can only get here if ${FILE}.lock cannot be created
+	log "Cannot create file ${FILE}."
+	exit 3
+
+elif [ "${MODE}" = "stop" ]
+	then
+
+	{
+		flock -n 9
+		if [ $? -ne 0 ]
+			then
+			pid=$(<${FILE}.lock)
+			log "Killing process ${pid}..."
+			kill -TERM -${pid}
+			exit 0
+		fi
+
+		log "File ${FILE}.lock has been locked by me but it shouldn't. Is a collector running?"
+		exit 4
+
+	} 9<"${FILE}.lock"
+
+	log "File ${FILE}.lock does not exist. Is a collector running?"
+	exit 5
+
+else
+
+	cat <<EOF
+Usage:
+
+    "${0}" start|stop PORT [BACKEND_HOST BACKEND_PORT]
+
+    PORT          The port this script will listen
+                  (configure netdata to use this as a second backend)
+
+    BACKEND_HOST  The real backend host
+    BACKEND_PORT  The real backend port
+
+    This script can act as fallback backend for netdata.
+    It will receive metrics from netdata, save them to
+    ${FILE}
+    and once netdata reconnects to the real-backend, this script
+    will push all metrics collected to the real-backend too and
+    wait for a failure to happen again.
+
+    Only one netdata can connect to this script at a time.
+    If you need fallback for multiple netdata, run this script
+    multiple times with different ports.
+
+    You can run me in the background with this:
+
+    screen -d -m "${0}" start PORT [BACKEND_HOST BACKEND_PORT]
+EOF
+	exit 1
+fi