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-rw-r--r--collectors/cgroups.plugin/Makefile.in618
-rw-r--r--collectors/cgroups.plugin/README.md17
-rw-r--r--collectors/cgroups.plugin/cgroup-name.sh218
-rwxr-xr-xcollectors/cgroups.plugin/cgroup-name.sh.in538
-rw-r--r--collectors/cgroups.plugin/cgroup-network.c6
-rw-r--r--collectors/cgroups.plugin/sys_fs_cgroup.c874
-rw-r--r--collectors/cgroups.plugin/sys_fs_cgroup.h2
-rw-r--r--collectors/cgroups.plugin/tests/test_cgroups_plugin.c110
-rw-r--r--collectors/cgroups.plugin/tests/test_cgroups_plugin.h16
-rw-r--r--collectors/cgroups.plugin/tests/test_doubles.c162
10 files changed, 1435 insertions, 1126 deletions
diff --git a/collectors/cgroups.plugin/Makefile.in b/collectors/cgroups.plugin/Makefile.in
deleted file mode 100644
index 42fa2f189..000000000
--- a/collectors/cgroups.plugin/Makefile.in
+++ /dev/null
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- @$(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 $(MAINTAINERCLEANFILES)
-clean: clean-am
-
-clean-am: clean-generic mostlyclean-am
-
-distclean: distclean-am
- -rm -f Makefile
-distclean-am: clean-am distclean-generic
-
-dvi: dvi-am
-
-dvi-am:
-
-html: html-am
-
-html-am:
-
-info: info-am
-
-info-am:
-
-install-data-am: install-dist_pluginsSCRIPTS
-
-install-dvi: install-dvi-am
-
-install-dvi-am:
-
-install-exec-am:
-
-install-html: install-html-am
-
-install-html-am:
-
-install-info: install-info-am
-
-install-info-am:
-
-install-man:
-
-install-pdf: install-pdf-am
-
-install-pdf-am:
-
-install-ps: install-ps-am
-
-install-ps-am:
-
-installcheck-am:
-
-maintainer-clean: maintainer-clean-am
- -rm -f Makefile
-maintainer-clean-am: distclean-am maintainer-clean-generic
-
-mostlyclean: mostlyclean-am
-
-mostlyclean-am: mostlyclean-generic
-
-pdf: pdf-am
-
-pdf-am:
-
-ps: ps-am
-
-ps-am:
-
-uninstall-am: uninstall-dist_pluginsSCRIPTS
-
-.MAKE: install-am install-strip
-
-.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
- ctags-am distclean distclean-generic distdir dvi dvi-am html \
- html-am info info-am install install-am install-data \
- install-data-am install-dist_pluginsSCRIPTS install-dvi \
- install-dvi-am install-exec install-exec-am install-html \
- install-html-am install-info install-info-am install-man \
- install-pdf install-pdf-am install-ps install-ps-am \
- install-strip installcheck installcheck-am installdirs \
- maintainer-clean maintainer-clean-generic mostlyclean \
- mostlyclean-generic pdf pdf-am ps ps-am tags-am uninstall \
- uninstall-am uninstall-dist_pluginsSCRIPTS
-
-.PRECIOUS: Makefile
-
-.in:
- if sed \
- -e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
- -e 's#[@]sbindir_POST@#$(sbindir)#g' \
- -e 's#[@]pluginsdir_POST@#$(pluginsdir)#g' \
- -e 's#[@]configdir_POST@#$(configdir)#g' \
- -e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
- -e 's#[@]cachedir_POST@#$(cachedir)#g' \
- -e 's#[@]registrydir_POST@#$(registrydir)#g' \
- -e 's#[@]varlibdir_POST@#$(varlibdir)#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/cgroups.plugin/README.md b/collectors/cgroups.plugin/README.md
index f34055b39..21dbcae83 100644
--- a/collectors/cgroups.plugin/README.md
+++ b/collectors/cgroups.plugin/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "cgroups.plugin"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/cgroups.plugin/README.md
+-->
+
# cgroups.plugin
You can monitor containers and virtual machines using **cgroups**.
@@ -98,7 +103,15 @@ For this mapping Netdata provides 2 configuration options:
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](cgroup-name.sh.in) to get its name. This script queries `docker`, or applies heuristics to find give a name for the cgroup.
+The above pattern list is matched against the path of the cgroup. For matched cgroups, Netdata calls the script [cgroup-name.sh](https://raw.githubusercontent.com/netdata/netdata/master/collectors/cgroups.plugin/cgroup-name.sh.in) to get its name. This script queries `docker`, `kubectl`, `podman`, or applies heuristics to find give a name for the cgroup.
+
+#### Note on Podman container names
+
+Podman's security model is a lot more restrictive than Docker's, so Netdata will not be able to detect container names out of the box unless they were started by the same user as Netdata itself.
+
+If Podman is used in "rootful" mode, it's also possible to use `podman system service` to grant Netdata access to container names. To do this, ensure `podman system service` is running and Netdata has access to `/run/podman/podman.sock` (the default permissions as specified by upstream are `0600`, with owner `root`, so you will have to adjust the configuration).
+
+[docker-socket-proxy](https://github.com/Tecnativa/docker-socket-proxy) can also be used to give Netdata restricted access to the socket. Note that `PODMAN_HOST` in Netdata's environment should be set to the proxy's URL in this case.
### charts with zero metrics
@@ -132,7 +145,7 @@ Support per distribution:
|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|
+|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
diff --git a/collectors/cgroups.plugin/cgroup-name.sh b/collectors/cgroups.plugin/cgroup-name.sh
deleted file mode 100644
index 2f66317d8..000000000
--- a/collectors/cgroups.plugin/cgroup-name.sh
+++ /dev/null
@@ -1,218 +0,0 @@
-#!/usr/bin/env bash
-#shellcheck disable=SC2001
-
-# 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 "${@}"
- exit 1
-}
-
-function docker_get_name_classic() {
- local id="${1}"
- info "Running command: docker ps --filter=id=\"${id}\" --format=\"{{.Names}}\""
- NAME="$(docker ps --filter=id="${id}" --format="{{.Names}}")"
- return 0
-}
-
-function docker_get_name_api() {
- local path="/containers/${1}/json"
- if [ -z "${DOCKER_HOST}" ]; then
- warning "No DOCKER_HOST is set"
- return 1
- fi
- if ! command -v jq >/dev/null 2>&1; then
- warning "Can't find jq command line tool. jq is required for netdata to retrieve docker container name using ${DOCKER_HOST} API, falling back to docker ps"
- return 1
- fi
- if [ -S "${DOCKER_HOST}" ]; then
- info "Running API command: curl --unix-socket ${DOCKER_HOST} http://localhost${path}"
- JSON=$(curl -sS --unix-socket "${DOCKER_HOST}" "http://localhost${path}")
- elif [ "${DOCKER_HOST}" == "/var/run/docker.sock" ]; then
- warning "Docker socket was not found at ${DOCKER_HOST}"
- return 1
- else
- info "Running API command: curl ${DOCKER_HOST}${path}"
- JSON=$(curl -sS "${DOCKER_HOST}${path}")
- fi
- NAME=$(echo "$JSON" | jq -r .Name,.Config.Hostname | grep -v null | head -n1 | sed 's|^/||')
- return 0
-}
-
-function k8s_get_name() {
- # Take the last part of the delimited path identifier (expecting either _ or / as a delimiter).
- local id="${1##*_}"
- if [ "${id}" == "${1}" ]; then
- id="${1##*/}"
- fi
- KUBE_TOKEN="$(</var/run/secrets/kubernetes.io/serviceaccount/token)"
- if command -v jq >/dev/null 2>&1; then
- NAME="$(
- curl -sSk -H "Authorization: Bearer $KUBE_TOKEN" "https://$KUBERNETES_SERVICE_HOST:$KUBERNETES_PORT_443_TCP_PORT/api/v1/pods" |
- jq -r '.items[] | "k8s_\(.metadata.namespace)_\(.metadata.name)_\(.metadata.uid)_" + (.status.containerStatuses[]? | "\(.name) \(.containerID)")' |
- grep "$id" |
- cut -d' ' -f1
- )"
- else
- warning "jq command not available, k8s_get_name() cannot execute. Please install jq should you wish for k8s to be fully functional"
- fi
-
- if [ -z "${NAME}" ]; then
- warning "cannot find the name of k8s pod with containerID '${id}'. Setting name to ${id} and disabling it"
- NAME="${id}"
- NAME_NOT_FOUND=3
- else
- info "k8s containerID '${id}' has chart name (namespace_podname_poduid_containername) '${NAME}'"
- fi
-}
-
-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_NOT_FOUND=2
- NAME="${id:0:12}"
- else
- info "docker container '${id}' is named '${NAME}'"
- fi
-}
-
-function docker_validate_id() {
- local id="${1}"
- if [ -n "${id}" ] && { [ ${#id} -eq 64 ] || [ ${#id} -eq 12 ]; }; then
- docker_get_name "${id}"
- else
- error "a docker id cannot be extracted from docker cgroup '${CGROUP}'."
- fi
-}
-
-
-# -----------------------------------------------------------------------------
-
-[ -z "${NETDATA_USER_CONFIG_DIR}" ] && NETDATA_USER_CONFIG_DIR="/etc/netdata"
-[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/lib/netdata/conf.d"
-
-DOCKER_HOST="${DOCKER_HOST:=/var/run/docker.sock}"
-CGROUP="${1}"
-NAME_NOT_FOUND=0
-NAME=
-
-# -----------------------------------------------------------------------------
-
-if [ -z "${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
-
-if [ -z "${NAME}" ] && [ -n "${KUBERNETES_SERVICE_HOST}" ] && [ -n "${KUBERNETES_PORT_443_TCP_PORT}" ] && [[ ${CGROUP} =~ ^.*kubepods.* ]]; then
- k8s_get_name "${CGROUP}"
-fi
-
-if [ -z "${NAME}" ]; then
- if [[ ${CGROUP} =~ ^.*docker[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]; then
- # docker containers
- #shellcheck disable=SC1117
- DOCKERID="$(echo "${CGROUP}" | sed "s|^.*docker[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|")"
- docker_validate_id "${DOCKERID}"
- elif [[ ${CGROUP} =~ ^.*ecs[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]; then
- # ECS
- #shellcheck disable=SC1117
- DOCKERID="$(echo "${CGROUP}" | sed "s|^.*ecs[-_/].*[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|")"
- docker_validate_id "${DOCKERID}"
-
- 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}"
-
-exit ${NAME_NOT_FOUND}
-
diff --git a/collectors/cgroups.plugin/cgroup-name.sh.in b/collectors/cgroups.plugin/cgroup-name.sh.in
index f7b765bb6..19fbf3989 100755
--- a/collectors/cgroups.plugin/cgroup-name.sh.in
+++ b/collectors/cgroups.plugin/cgroup-name.sh.in
@@ -17,117 +17,360 @@ export LC_ALL=C
PROGRAM_NAME="$(basename "${0}")"
logdate() {
- date "+%Y-%m-%d %H:%M:%S"
+ date "+%Y-%m-%d %H:%M:%S"
}
log() {
- local status="${1}"
- shift
+ local status="${1}"
+ shift
- echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+ echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
}
warning() {
- log WARNING "${@}"
+ log WARNING "${@}"
}
error() {
- log ERROR "${@}"
+ log ERROR "${@}"
}
info() {
- log INFO "${@}"
+ log INFO "${@}"
}
fatal() {
- log FATAL "${@}"
- exit 1
-}
-
-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 path="/containers/${1}/json"
- if [ -z "${DOCKER_HOST}" ]; then
- warning "No DOCKER_HOST is set"
- return 1
- fi
- if ! command -v jq >/dev/null 2>&1; then
- warning "Can't find jq command line tool. jq is required for netdata to retrieve docker container name using ${DOCKER_HOST} API, falling back to docker ps"
- return 1
- fi
- if [ -S "${DOCKER_HOST}" ]; then
- info "Running API command: curl --unix-socket ${DOCKER_HOST} http://localhost${path}"
- JSON=$(curl -sS --unix-socket "${DOCKER_HOST}" "http://localhost${path}")
- elif [ "${DOCKER_HOST}" == "/var/run/docker.sock" ]; then
- warning "Docker socket was not found at ${DOCKER_HOST}"
- return 1
- else
- info "Running API command: curl ${DOCKER_HOST}${path}"
- JSON=$(curl -sS "${DOCKER_HOST}${path}")
- fi
- NAME=$(echo "$JSON" | jq -r .Name,.Config.Hostname | grep -v null | head -n1 | sed 's|^/||')
- return 0
+ log FATAL "${@}"
+ exit 1
+}
+
+function docker_like_get_name_command() {
+ local command="${1}"
+ local id="${2}"
+ info "Running command: ${command} ps --filter=id=\"${id}\" --format=\"{{.Names}}\""
+ NAME="$(${command} ps --filter=id="${id}" --format="{{.Names}}")"
+ return 0
+}
+
+function docker_like_get_name_api() {
+ local host_var="${1}"
+ local host="${!host_var}"
+ local path="/containers/${2}/json"
+ if [ -z "${host}" ]; then
+ warning "No ${host_var} is set"
+ return 1
+ fi
+ if ! command -v jq > /dev/null 2>&1; then
+ warning "Can't find jq command line tool. jq is required for netdata to retrieve container name using ${host} API, falling back to docker ps"
+ return 1
+ fi
+ if [ -S "${host}" ]; then
+ info "Running API command: curl --unix-socket \"${host}\" http://localhost${path}"
+ JSON=$(curl -sS --unix-socket "${host}" "http://localhost${path}")
+ else
+ info "Running API command: curl \"${host}${path}\""
+ JSON=$(curl -sS "${host}${path}")
+ fi
+ NAME=$(echo "${JSON}" | jq -r .Name,.Config.Hostname | grep -v null | head -n1 | sed 's|^/||')
+ return 0
+}
+
+# get_lbl_val returns the value for the label with the given name.
+# Returns "null" string if the label doesn't exist.
+# Expected labels format: 'name="value",...'.
+function get_lbl_val() {
+ local labels want_name
+ labels="${1}"
+ want_name="${2}"
+
+ IFS=, read -ra labels <<< "$labels"
+
+ local lname lval
+ for l in "${labels[@]}"; do
+ IFS="=" read -r lname lval <<< "$l"
+ if [ "$want_name" = "$lname" ] && [ -n "$lval" ]; then
+ echo "${lval:1:-1}" # trim "
+ return 0
+ fi
+ done
+
+ echo "null"
+ return 1
+}
+
+function add_lbl_prefix() {
+ local orig_labels prefix
+ orig_labels="${1}"
+ prefix="${2}"
+
+ IFS=, read -ra labels <<< "$orig_labels"
+
+ local new_labels
+ for l in "${labels[@]}"; do
+ new_labels+="${prefix}${l},"
+ done
+
+ echo "${new_labels:0:-1}" # trim last ','
+}
+
+# k8s_get_kubepod_name resolves */kubepods/* cgroup name.
+# pod level cgroup name format: 'pod_<namespace>_<pod_name>'
+# container level cgroup name format: 'cntr_<namespace>_<pod_name>_<container_name>'
+function k8s_get_kubepod_name() {
+ # GKE /sys/fs/cgroup/*/ tree:
+ # |-- kubepods
+ # | |-- burstable
+ # | | |-- pod98cee708-023b-11eb-933d-42010a800193
+ # | | | |-- 922161c98e6ea450bf665226cdc64ca2aa3e889934c2cff0aec4325f8f78ac03
+ # | | `-- a5d223eec35e00f5a1c6fa3e3a5faac6148cdc1f03a2e762e873b7efede012d7
+ # | `-- pode314bbac-d577-11ea-a171-42010a80013b
+ # | |-- 7d505356b04507de7b710016d540b2759483ed5f9136bb01a80872b08f771930
+ # | `-- 88ab4683b99cfa7cc8c5f503adf7987dd93a3faa7c4ce0d17d419962b3220d50
+ #
+ # Minikube (v1.8.2) /sys/fs/cgroup/*/ tree:
+ # |-- kubepods.slice
+ # | |-- kubepods-besteffort.slice
+ # | | |-- kubepods-besteffort-pod10fb5647_c724_400c_b9cc_0e6eae3110e7.slice
+ # | | | |-- docker-36e5eb5056dfdf6dbb75c0c44a1ecf23217fe2c50d606209d8130fcbb19fb5a7.scope
+ # | | | `-- docker-87e18c2323621cf0f635c53c798b926e33e9665c348c60d489eef31ee1bd38d7.scope
+ #
+ # NOTE: cgroups plugin uses '_' to join dir names, so it is <parent>_<child>_<child>_...
+
+ local fn="${FUNCNAME[0]}"
+ local id="${1}"
+
+ if [[ ! $id =~ ^kubepods ]]; then
+ warning "${fn}: '${id}' is not kubepod cgroup."
+ return 1
+ fi
+
+ local clean_id="$id"
+ clean_id=${clean_id//.slice/}
+ clean_id=${clean_id//.scope/}
+
+ local name pod_uid cntr_id
+ if [[ $clean_id == "kubepods" ]]; then
+ name="$clean_id"
+ elif [[ $clean_id =~ .+(besteffort|burstable|guaranteed)$ ]]; then
+ # kubepods_<QOS_CLASS>
+ # kubepods_kubepods-<QOS_CLASS>
+ name=${clean_id//-/_}
+ name=${name/#kubepods_kubepods/kubepods}
+ elif [[ $clean_id =~ .+pod[a-f0-9_-]+_docker-([a-f0-9]+)$ ]]; then
+ # ...pod<POD_UID>_docker-<CONTAINER_ID> (POD_UID w/ "_")
+ cntr_id=${BASH_REMATCH[1]}
+ elif [[ $clean_id =~ .+pod[a-f0-9-]+_([a-f0-9]+)$ ]]; then
+ # ...pod<POD_UID>_<CONTAINER_ID>
+ cntr_id=${BASH_REMATCH[1]}
+ elif [[ $clean_id =~ .+pod([a-f0-9_-]+)$ ]]; then
+ # ...pod<POD_UID> (POD_UID w/ and w/o "_")
+ pod_uid=${BASH_REMATCH[1]}
+ pod_uid=${pod_uid//_/-}
+ fi
+
+ if [ -n "$name" ]; then
+ echo "$name"
+ return 0
+ fi
+
+ if [ -z "$pod_uid" ] && [ -z "$cntr_id" ]; then
+ warning "${fn}: can't extract pod_uid or container_id from the cgroup '$id'."
+ return 1
+ fi
+
+ [ -n "$pod_uid" ] && info "${fn}: cgroup '$id' is a pod(uid:$pod_uid)"
+ [ -n "$cntr_id" ] && info "${fn}: cgroup '$id' is a container(id:$cntr_id)"
+
+ if ! command -v jq > /dev/null 2>&1; then
+ warning "${fn}: 'jq' command not available."
+ return 1
+ fi
+
+ local kube_system_ns
+ local tmp_kube_system_ns_file="${TMPDIR:-"/tmp/"}netdata-cgroups-kube-system-ns"
+ [ -f "$tmp_kube_system_ns_file" ] && kube_system_ns=$(cat "$tmp_kube_system_ns_file" 2> /dev/null)
+
+ local pods
+ if [ -n "${KUBERNETES_SERVICE_HOST}" ] && [ -n "${KUBERNETES_PORT_443_TCP_PORT}" ]; then
+ local token header host url
+ token="$(< /var/run/secrets/kubernetes.io/serviceaccount/token)"
+ header="Authorization: Bearer $token"
+ host="$KUBERNETES_SERVICE_HOST:$KUBERNETES_PORT_443_TCP_PORT"
+
+ if [ -z "$kube_system_ns" ]; then
+ url="https://$host/api/v1/namespaces/kube-system"
+ # FIX: check HTTP response code
+ if ! kube_system_ns=$(curl -sSk -H "$header" "$url" 2>&1); then
+ warning "${fn}: error on curl '${url}': ${kube_system_ns}."
+ else
+ echo "$kube_system_ns" > "$tmp_kube_system_ns_file" 2> /dev/null
+ fi
+ fi
+
+ url="https://$host/api/v1/pods"
+ [ -n "$MY_NODE_NAME" ] && url+="?fieldSelector=spec.nodeName==$MY_NODE_NAME"
+ # FIX: check HTTP response code
+ if ! pods=$(curl -sSk -H "$header" "$url" 2>&1); then
+ warning "${fn}: error on curl '${url}': ${pods}."
+ return 1
+ fi
+ elif ps -C kubelet > /dev/null 2>&1 && command -v kubectl > /dev/null 2>&1; then
+ if [ -z "$kube_system_ns" ]; then
+ if ! kube_system_ns=$(kubectl get namespaces kube-system -o json 2>&1); then
+ warning "${fn}: error on 'kubectl': ${kube_system_ns}."
+ else
+ echo "$kube_system_ns" > "$tmp_kube_system_ns_file" 2> /dev/null
+ fi
+ fi
+
+ [[ -z ${KUBE_CONFIG+x} ]] && KUBE_CONFIG="/etc/kubernetes/admin.conf"
+ if ! pods=$(kubectl --kubeconfig="$KUBE_CONFIG" get pods --all-namespaces -o json 2>&1); then
+ warning "${fn}: error on 'kubectl': ${pods}."
+ return 1
+ fi
+ else
+ warning "${fn}: not inside the k8s cluster and 'kubectl' command not available."
+ return 1
+ fi
+
+ local kube_system_uid
+ if [ -n "$kube_system_ns" ] && ! kube_system_uid=$(jq -r '.metadata.uid' <<< "$kube_system_ns" 2>&1); then
+ warning "${fn}: error on 'jq' parse kube_system_ns: ${kube_system_uid}."
+ fi
+
+ local jq_filter
+ jq_filter+='.items[] | "'
+ jq_filter+='namespace=\"\(.metadata.namespace)\",'
+ jq_filter+='pod_name=\"\(.metadata.name)\",'
+ jq_filter+='pod_uid=\"\(.metadata.uid)\",'
+ #jq_filter+='\(.metadata.labels | to_entries | map("pod_label_"+.key+"=\""+.value+"\"") | join(",") | if length > 0 then .+"," else . end)'
+ jq_filter+='\((.metadata.ownerReferences[]? | select(.controller==true) | "controller_kind=\""+.kind+"\",controller_name=\""+.name+"\",") // "")'
+ jq_filter+='node_name=\"\(.spec.nodeName)\",'
+ jq_filter+='" + '
+ jq_filter+='(.status.containerStatuses[]? | "'
+ jq_filter+='container_name=\"\(.name)\",'
+ jq_filter+='container_id=\"\(.containerID)\"'
+ jq_filter+='") | '
+ jq_filter+='sub("docker://";"")' # containerID: docker://a346da9bc0e3eaba6b295f64ac16e02f2190db2cef570835706a9e7a36e2c722
+
+ local containers
+ if ! containers=$(jq -r "${jq_filter}" <<< "$pods" 2>&1); then
+ warning "${fn}: error on 'jq' parse pods: ${containers}."
+ return 1
+ fi
+
+ # available labels:
+ # namespace, pod_name, pod_uid, container_name, container_id, node_name
+ local labels
+ if [ -n "$cntr_id" ]; then
+ if labels=$(grep "$cntr_id" <<< "$containers" 2> /dev/null); then
+ labels+=',kind="container"'
+ [ -n "$kube_system_uid" ] && [ "$kube_system_uid" != "null" ] && labels+=",cluster_id=\"$kube_system_uid\""
+ name="cntr"
+ name+="_$(get_lbl_val "$labels" namespace)"
+ name+="_$(get_lbl_val "$labels" pod_name)"
+ name+="_$(get_lbl_val "$labels" container_name)"
+ labels=$(add_lbl_prefix "$labels" "k8s_")
+ name+=" $labels"
+ fi
+ elif [ -n "$pod_uid" ]; then
+ if labels=$(grep "$pod_uid" -m 1 <<< "$containers" 2> /dev/null); then
+ labels="${labels%%,container_*}"
+ labels+=',kind="pod"'
+ [ -n "$kube_system_uid" ] && [ "$kube_system_uid" != "null" ] && labels+=",cluster_id=\"$kube_system_uid\""
+ name="pod"
+ name+="_$(get_lbl_val "$labels" namespace)"
+ name+="_$(get_lbl_val "$labels" pod_name)"
+ labels=$(add_lbl_prefix "$labels" "k8s_")
+ name+=" $labels"
+ fi
+ fi
+
+ # jq filter nonexistent field and nonexistent label value is 'null'
+ if [[ $name =~ _null(_|$) ]]; then
+ warning "${fn}: invalid name: $name (cgroup '$id')"
+ name=""
+ fi
+
+ echo "$name"
+ [ -n "$name" ]
+ return
}
function k8s_get_name() {
- # Take the last part of the delimited path identifier (expecting either _ or / as a delimiter).
- local id="${1##*_}"
- if [ "${id}" == "${1}" ]; then
- id="${1##*/}"
- fi
- KUBE_TOKEN="$(</var/run/secrets/kubernetes.io/serviceaccount/token)"
- if command -v jq >/dev/null 2>&1; then
- NAME="$(
- curl -sSk -H "Authorization: Bearer $KUBE_TOKEN" "https://$KUBERNETES_SERVICE_HOST:$KUBERNETES_PORT_443_TCP_PORT/api/v1/pods" |
- jq -r '.items[] | "k8s_\(.metadata.namespace)_\(.metadata.name)_\(.metadata.uid)_" + (.status.containerStatuses[]? | "\(.name) \(.containerID)")' |
- grep "$id" |
- cut -d' ' -f1
- )"
- else
- warning "jq command not available, k8s_get_name() cannot execute. Please install jq should you wish for k8s to be fully functional"
- fi
-
- if [ -z "${NAME}" ]; then
- warning "cannot find the name of k8s pod with containerID '${id}'. Setting name to ${id} and disabling it"
- NAME="${id}"
- NAME_NOT_FOUND=3
- else
- info "k8s containerID '${id}' has chart name (namespace_podname_poduid_containername) '${NAME}'"
- fi
+ local fn="${FUNCNAME[0]}"
+ local id="${1}"
+
+ NAME=$(k8s_get_kubepod_name "$id")
+
+ if [ -z "${NAME}" ]; then
+ warning "${fn}: cannot find the name of cgroup with id '${id}'. Setting name to ${id} and disabling it."
+ NAME="${id}"
+ NAME_NOT_FOUND=3
+ else
+ NAME="k8s_${NAME}"
+
+ local name labels
+ name=${NAME%% *}
+ labels=${NAME#* }
+ if [ "$name" != "$labels" ]; then
+ info "${fn}: cgroup '${id}' has chart name '${name}', labels '${labels}"
+ else
+ info "${fn}: cgroup '${id}' has chart name '${NAME}'"
+ fi
+ fi
}
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_NOT_FOUND=2
- NAME="${id:0:12}"
- else
- info "docker container '${id}' is named '${NAME}'"
- fi
+ local id="${1}"
+ if hash docker 2> /dev/null; then
+ docker_like_get_name_command docker "${id}"
+ else
+ docker_like_get_name_api DOCKER_HOST "${id}" || docker_like_get_name_command podman "${id}"
+ fi
+ if [ -z "${NAME}" ]; then
+ warning "cannot find the name of docker container '${id}'"
+ NAME_NOT_FOUND=2
+ NAME="${id:0:12}"
+ else
+ info "docker container '${id}' is named '${NAME}'"
+ fi
}
function docker_validate_id() {
- local id="${1}"
- if [ -n "${id}" ] && { [ ${#id} -eq 64 ] || [ ${#id} -eq 12 ]; }; then
- docker_get_name "${id}"
- else
- error "a docker id cannot be extracted from docker cgroup '${CGROUP}'."
- fi
+ local id="${1}"
+ if [ -n "${id}" ] && { [ ${#id} -eq 64 ] || [ ${#id} -eq 12 ]; }; then
+ docker_get_name "${id}"
+ else
+ error "a docker id cannot be extracted from docker cgroup '${CGROUP}'."
+ fi
+}
+
+function podman_get_name() {
+ local id="${1}"
+
+ # for Podman, prefer using the API if we can, as netdata will not normally have access
+ # to other users' containers, so they will not be visible when running `podman ps`
+ docker_like_get_name_api PODMAN_HOST "${id}" || docker_like_get_name_command podman "${id}"
+
+ if [ -z "${NAME}" ]; then
+ warning "cannot find the name of podman container '${id}'"
+ NAME_NOT_FOUND=2
+ NAME="${id:0:12}"
+ else
+ info "podman container '${id}' is named '${NAME}'"
+ fi
}
+function podman_validate_id() {
+ local id="${1}"
+ if [ -n "${id}" ] && [ ${#id} -eq 64 ]; then
+ podman_get_name "${id}"
+ else
+ error "a podman id cannot be extracted from docker cgroup '${CGROUP}'."
+ fi
+}
# -----------------------------------------------------------------------------
@@ -135,6 +378,7 @@ function docker_validate_id() {
[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="@libconfigdir_POST@"
DOCKER_HOST="${DOCKER_HOST:=/var/run/docker.sock}"
+PODMAN_HOST="${PODMAN_HOST:=/run/podman/podman.sock}"
CGROUP="${1}"
NAME_NOT_FOUND=0
NAME=
@@ -142,77 +386,85 @@ NAME=
# -----------------------------------------------------------------------------
if [ -z "${CGROUP}" ]; then
- fatal "called without a cgroup name. Nothing to do."
+ 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
+ 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
-if [ -z "${NAME}" ] && [ -n "${KUBERNETES_SERVICE_HOST}" ] && [ -n "${KUBERNETES_PORT_443_TCP_PORT}" ] && [[ ${CGROUP} =~ ^.*kubepods.* ]]; then
- k8s_get_name "${CGROUP}"
+if [ -z "${NAME}" ]; then
+ if [[ ${CGROUP} =~ ^.*kubepods.* ]]; then
+ k8s_get_name "${CGROUP}"
+ fi
fi
if [ -z "${NAME}" ]; then
- if [[ ${CGROUP} =~ ^.*docker[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]; then
- # docker containers
- #shellcheck disable=SC1117
- DOCKERID="$(echo "${CGROUP}" | sed "s|^.*docker[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|")"
- docker_validate_id "${DOCKERID}"
- elif [[ ${CGROUP} =~ ^.*ecs[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]; then
- # ECS
- #shellcheck disable=SC1117
- DOCKERID="$(echo "${CGROUP}" | sed "s|^.*ecs[-_/].*[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|")"
- docker_validate_id "${DOCKERID}"
-
- 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}"
+ if [[ ${CGROUP} =~ ^.*docker[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]; then
+ # docker containers
+ #shellcheck disable=SC1117
+ DOCKERID="$(echo "${CGROUP}" | sed "s|^.*docker[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|")"
+ docker_validate_id "${DOCKERID}"
+ elif [[ ${CGROUP} =~ ^.*ecs[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]; then
+ # ECS
+ #shellcheck disable=SC1117
+ DOCKERID="$(echo "${CGROUP}" | sed "s|^.*ecs[-_/].*[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|")"
+ docker_validate_id "${DOCKERID}"
+ elif [[ ${CGROUP} =~ ^.*libpod-[a-fA-F0-9]+.*$ ]]; then
+ # Podman
+ PODMANID="$(echo "${CGROUP}" | sed "s|^.*libpod-\([a-fA-F0-9]\+\).*$|\1|")"
+ podman_validate_id "${PODMANID}"
+
+ 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
+ elif [[ ${CGROUP} =~ lxc.payload.* ]]; then
+ # LXC 4.0
+ NAME="$(echo "${CGROUP}" | sed 's/lxc\.payload\.\(.*\)/\1/g')"
+ fi
+
+ [ -z "${NAME}" ] && NAME="${CGROUP}"
+ [ ${#NAME} -gt 100 ] && NAME="${NAME:0:100}"
fi
info "cgroup '${CGROUP}' is called '${NAME}'"
echo "${NAME}"
exit ${NAME_NOT_FOUND}
-
diff --git a/collectors/cgroups.plugin/cgroup-network.c b/collectors/cgroups.plugin/cgroup-network.c
index d01065422..921b14dfb 100644
--- a/collectors/cgroups.plugin/cgroup-network.c
+++ b/collectors/cgroups.plugin/cgroup-network.c
@@ -689,8 +689,10 @@ int main(int argc, char **argv) {
}
else if(!strcmp(argv[1], "--cgroup")) {
char *cgroup = argv[2];
- if(verify_path(cgroup) == -1)
- fatal("cgroup '%s' does not exist or is not valid.", cgroup);
+ if(verify_path(cgroup) == -1) {
+ error("cgroup '%s' does not exist or is not valid.", cgroup);
+ return 1;
+ }
pid = read_pid_from_cgroup(cgroup);
call_the_helper(pid, cgroup);
diff --git a/collectors/cgroups.plugin/sys_fs_cgroup.c b/collectors/cgroups.plugin/sys_fs_cgroup.c
index d9d130f7e..705c51735 100644
--- a/collectors/cgroups.plugin/sys_fs_cgroup.c
+++ b/collectors/cgroups.plugin/sys_fs_cgroup.c
@@ -23,6 +23,11 @@ static int cgroup_enable_blkio_throttle_io = CONFIG_BOOLEAN_AUTO;
static int cgroup_enable_blkio_throttle_ops = CONFIG_BOOLEAN_AUTO;
static int cgroup_enable_blkio_merged_ops = CONFIG_BOOLEAN_AUTO;
static int cgroup_enable_blkio_queued_ops = CONFIG_BOOLEAN_AUTO;
+static int cgroup_enable_pressure_cpu = CONFIG_BOOLEAN_AUTO;
+static int cgroup_enable_pressure_io_some = CONFIG_BOOLEAN_AUTO;
+static int cgroup_enable_pressure_io_full = CONFIG_BOOLEAN_AUTO;
+static int cgroup_enable_pressure_memory_some = CONFIG_BOOLEAN_AUTO;
+static int cgroup_enable_pressure_memory_full = CONFIG_BOOLEAN_AUTO;
static int cgroup_enable_systemd_services = CONFIG_BOOLEAN_YES;
static int cgroup_enable_systemd_services_detailed_memory = CONFIG_BOOLEAN_NO;
@@ -68,6 +73,130 @@ static uint32_t Write_hash = 0;
static uint32_t user_hash = 0;
static uint32_t system_hash = 0;
+enum cgroups_type { CGROUPS_AUTODETECT_FAIL, CGROUPS_V1, CGROUPS_V2 };
+
+enum cgroups_systemd_setting {
+ SYSTEMD_CGROUP_ERR,
+ SYSTEMD_CGROUP_LEGACY,
+ SYSTEMD_CGROUP_HYBRID,
+ SYSTEMD_CGROUP_UNIFIED
+};
+
+struct cgroups_systemd_config_setting {
+ char *name;
+ enum cgroups_systemd_setting setting;
+};
+
+static struct cgroups_systemd_config_setting cgroups_systemd_options[] = {
+ { .name = "legacy", .setting = SYSTEMD_CGROUP_LEGACY },
+ { .name = "hybrid", .setting = SYSTEMD_CGROUP_HYBRID },
+ { .name = "unified", .setting = SYSTEMD_CGROUP_UNIFIED },
+ { .name = NULL, .setting = SYSTEMD_CGROUP_ERR },
+};
+
+/* on Fed systemd is not in PATH for some reason */
+#define SYSTEMD_CMD_RHEL "/usr/lib/systemd/systemd --version"
+#define SYSTEMD_HIERARCHY_STRING "default-hierarchy="
+
+#define MAXSIZE_PROC_CMDLINE 4096
+static enum cgroups_systemd_setting cgroups_detect_systemd(const char *exec)
+{
+ pid_t command_pid;
+ enum cgroups_systemd_setting retval = SYSTEMD_CGROUP_ERR;
+ char buf[MAXSIZE_PROC_CMDLINE];
+ char *begin, *end;
+
+ FILE *f = mypopen(exec, &command_pid);
+
+ if (!f)
+ return retval;
+
+ while (fgets(buf, MAXSIZE_PROC_CMDLINE, f) != NULL) {
+ if ((begin = strstr(buf, SYSTEMD_HIERARCHY_STRING))) {
+ end = begin = begin + strlen(SYSTEMD_HIERARCHY_STRING);
+ if (!*begin)
+ break;
+ while (isalpha(*end))
+ end++;
+ *end = 0;
+ for (int i = 0; cgroups_systemd_options[i].name; i++) {
+ if (!strcmp(begin, cgroups_systemd_options[i].name)) {
+ retval = cgroups_systemd_options[i].setting;
+ break;
+ }
+ }
+ break;
+ }
+ }
+
+ if (mypclose(f, command_pid))
+ return SYSTEMD_CGROUP_ERR;
+
+ return retval;
+}
+
+static enum cgroups_type cgroups_try_detect_version()
+{
+ pid_t command_pid;
+ char buf[MAXSIZE_PROC_CMDLINE];
+ enum cgroups_systemd_setting systemd_setting;
+ int cgroups2_available = 0;
+
+ // 1. check if cgroups2 availible on system at all
+ FILE *f = mypopen("grep cgroup /proc/filesystems", &command_pid);
+ if (!f) {
+ error("popen failed");
+ return CGROUPS_AUTODETECT_FAIL;
+ }
+ while (fgets(buf, MAXSIZE_PROC_CMDLINE, f) != NULL) {
+ if (strstr(buf, "cgroup2")) {
+ cgroups2_available = 1;
+ break;
+ }
+ }
+ if(mypclose(f, command_pid))
+ return CGROUPS_AUTODETECT_FAIL;
+
+ if(!cgroups2_available)
+ return CGROUPS_V1;
+
+ // 2. check systemd compiletime setting
+ if ((systemd_setting = cgroups_detect_systemd("systemd --version")) == SYSTEMD_CGROUP_ERR)
+ systemd_setting = cgroups_detect_systemd(SYSTEMD_CMD_RHEL);
+
+ if(systemd_setting == SYSTEMD_CGROUP_ERR)
+ return CGROUPS_AUTODETECT_FAIL;
+
+ if(systemd_setting == SYSTEMD_CGROUP_LEGACY || systemd_setting == SYSTEMD_CGROUP_HYBRID) {
+ // curently we prefer V1 if HYBRID is set as it seems to be more feature complete
+ // in the future we might want to continue here if SYSTEMD_CGROUP_HYBRID
+ // and go ahead with V2
+ return CGROUPS_V1;
+ }
+
+ // 3. if we are unified as on Fedora (default cgroups2 only mode)
+ // check kernel command line flag that can override that setting
+ f = fopen("/proc/cmdline", "r");
+ if (!f) {
+ error("Error reading kernel boot commandline parameters");
+ return CGROUPS_AUTODETECT_FAIL;
+ }
+
+ if (!fgets(buf, MAXSIZE_PROC_CMDLINE, f)) {
+ error("couldn't read all cmdline params into buffer");
+ fclose(f);
+ return CGROUPS_AUTODETECT_FAIL;
+ }
+
+ fclose(f);
+
+ if (strstr(buf, "systemd.unified_cgroup_hierarchy=0")) {
+ info("cgroups v2 (unified cgroups) is available but are disabled on this system.");
+ return CGROUPS_V1;
+ }
+ return CGROUPS_V2;
+}
+
void read_cgroup_plugin_configuration() {
system_page_size = sysconf(_SC_PAGESIZE);
@@ -84,7 +213,11 @@ void read_cgroup_plugin_configuration() {
if(cgroup_check_for_new_every < cgroup_update_every)
cgroup_check_for_new_every = cgroup_update_every;
- cgroup_use_unified_cgroups = config_get_boolean_ondemand("plugin:cgroups", "use unified cgroups", cgroup_use_unified_cgroups);
+ cgroup_use_unified_cgroups = config_get_boolean_ondemand("plugin:cgroups", "use unified cgroups", CONFIG_BOOLEAN_AUTO);
+ if(cgroup_use_unified_cgroups == CONFIG_BOOLEAN_AUTO)
+ cgroup_use_unified_cgroups = (cgroups_try_detect_version() == CGROUPS_V2);
+
+ info("use unified cgroups %s", cgroup_use_unified_cgroups ? "true" : "false");
cgroup_containers_chart_priority = (int)config_get_number("plugin:cgroups", "containers priority", cgroup_containers_chart_priority);
if(cgroup_containers_chart_priority < 1)
@@ -105,6 +238,12 @@ void read_cgroup_plugin_configuration() {
cgroup_enable_blkio_queued_ops = config_get_boolean_ondemand("plugin:cgroups", "enable blkio queued operations", cgroup_enable_blkio_queued_ops);
cgroup_enable_blkio_merged_ops = config_get_boolean_ondemand("plugin:cgroups", "enable blkio merged operations", cgroup_enable_blkio_merged_ops);
+ cgroup_enable_pressure_cpu = config_get_boolean_ondemand("plugin:cgroups", "enable cpu pressure", cgroup_enable_pressure_cpu);
+ cgroup_enable_pressure_io_some = config_get_boolean_ondemand("plugin:cgroups", "enable io some pressure", cgroup_enable_pressure_io_some);
+ cgroup_enable_pressure_io_full = config_get_boolean_ondemand("plugin:cgroups", "enable io full pressure", cgroup_enable_pressure_io_full);
+ cgroup_enable_pressure_memory_some = config_get_boolean_ondemand("plugin:cgroups", "enable memory some pressure", cgroup_enable_pressure_memory_some);
+ cgroup_enable_pressure_memory_full = config_get_boolean_ondemand("plugin:cgroups", "enable memory full pressure", cgroup_enable_pressure_memory_full);
+
cgroup_recheck_zero_blkio_every_iterations = (int)config_get_number("plugin:cgroups", "recheck zero blkio every iterations", cgroup_recheck_zero_blkio_every_iterations);
cgroup_recheck_zero_mem_failcnt_every_iterations = (int)config_get_number("plugin:cgroups", "recheck zero memory failcnt every iterations", cgroup_recheck_zero_mem_failcnt_every_iterations);
cgroup_recheck_zero_mem_detailed_every_iterations = (int)config_get_number("plugin:cgroups", "recheck zero detailed memory every iterations", cgroup_recheck_zero_mem_detailed_every_iterations);
@@ -116,6 +255,13 @@ void read_cgroup_plugin_configuration() {
char filename[FILENAME_MAX + 1], *s;
struct mountinfo *mi, *root = mountinfo_read(0);
if(!cgroup_use_unified_cgroups) {
+ // cgroup v1 does not have pressure metrics
+ cgroup_enable_pressure_cpu =
+ cgroup_enable_pressure_io_some =
+ cgroup_enable_pressure_io_full =
+ cgroup_enable_pressure_memory_some =
+ cgroup_enable_pressure_memory_full = CONFIG_BOOLEAN_NO;
+
mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "cpuacct");
if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "cpuacct");
if(!mi) {
@@ -216,9 +362,12 @@ void read_cgroup_plugin_configuration() {
// ----------------------------------------------------------------
" /machine.slice/*.service " // #3367 systemd-nspawn
+ " /kubepods/pod*/* " // k8s containers
+ " /kubepods/*/pod*/* " // k8s containers
// ----------------------------------------------------------------
+ " !/kubepods* " // all other k8s cgroups
" !*/vcpu* " // libvirtd adds these sub-cgroups
" !*/emulator " // libvirtd adds these sub-cgroups
" !*.mount "
@@ -233,6 +382,9 @@ void read_cgroup_plugin_configuration() {
" !/libvirt "
" !/lxc "
" !/lxc/*/* " // #1397 #2649
+ " !/lxc.monitor* "
+ " !/lxc.pivot "
+ " !/lxc.payload "
" !/machine "
" !/qemu "
" !/system "
@@ -252,6 +404,9 @@ void read_cgroup_plugin_configuration() {
" !/user "
" !/user.slice "
" !/lxc/*/* " // #2161 #2649
+ " !/lxc.monitor "
+ " !/lxc.payload/*/* "
+ " !/lxc.payload.* "
" * "
), NULL, SIMPLE_PATTERN_EXACT);
@@ -429,6 +584,7 @@ struct cgroup_network_interface {
#define CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE 0x00000002
#define CGROUP_OPTIONS_IS_UNIFIED 0x00000004
+// *** WARNING *** The fields are not thread safe. Take care of safe usage.
struct cgroup {
uint32_t options;
@@ -445,6 +601,8 @@ struct cgroup {
char *chart_title;
+ struct label *chart_labels;
+
struct cpuacct_stat cpuacct_stat;
struct cpuacct_usage cpuacct_usage;
@@ -461,6 +619,10 @@ struct cgroup {
struct cgroup_network_interface *interfaces;
+ struct pressure cpu_pressure;
+ struct pressure io_pressure;
+ struct pressure memory_pressure;
+
// per cgroup charts
RRDSET *st_cpu;
RRDSET *st_cpu_limit;
@@ -530,9 +692,22 @@ struct cgroup {
RRDDIM *rd_io_merged_write;
struct cgroup *next;
+ struct cgroup *discovered_next;
} *cgroup_root = NULL;
+uv_mutex_t cgroup_root_mutex;
+
+struct cgroup *discovered_cgroup_root = NULL;
+
+struct discovery_thread {
+ uv_thread_t thread;
+ uv_mutex_t mutex;
+ uv_cond_t cond_var;
+ int start_discovery;
+ int exited;
+} discovery_thread;
+
// ----------------------------------------------------------------------------
// read values from /sys
@@ -798,6 +973,54 @@ static inline void cgroup2_read_blkio(struct blkio *io, unsigned int word_offset
}
}
+static inline void cgroup2_read_pressure(struct pressure *res) {
+ static procfile *ff = NULL;
+
+ if (likely(res->filename)) {
+ ff = procfile_reopen(ff, res->filename, " =", PROCFILE_FLAG_DEFAULT);
+ if (unlikely(!ff)) {
+ res->updated = 0;
+ cgroups_check = 1;
+ return;
+ }
+
+ ff = procfile_readall(ff);
+ if (unlikely(!ff)) {
+ res->updated = 0;
+ cgroups_check = 1;
+ return;
+ }
+
+ size_t lines = procfile_lines(ff);
+ if (lines < 1) {
+ error("CGROUP: file '%s' should have 1+ lines.", res->filename);
+ res->updated = 0;
+ return;
+ }
+
+ res->some.value10 = strtod(procfile_lineword(ff, 0, 2), NULL);
+ res->some.value60 = strtod(procfile_lineword(ff, 0, 4), NULL);
+ res->some.value300 = strtod(procfile_lineword(ff, 0, 6), NULL);
+
+ if (lines > 2) {
+ res->full.value10 = strtod(procfile_lineword(ff, 1, 2), NULL);
+ res->full.value60 = strtod(procfile_lineword(ff, 1, 4), NULL);
+ res->full.value300 = strtod(procfile_lineword(ff, 1, 6), NULL);
+ }
+
+ res->updated = 1;
+
+ if (unlikely(res->some.enabled == CONFIG_BOOLEAN_AUTO)) {
+ res->some.enabled = CONFIG_BOOLEAN_YES;
+ if (lines > 2) {
+ res->full.enabled = CONFIG_BOOLEAN_YES;
+ } else {
+ res->full.enabled = CONFIG_BOOLEAN_NO;
+ }
+ }
+ }
+}
+
static inline void cgroup_read_memory(struct memory *mem, char parent_cg_is_unified) {
static procfile *ff = NULL;
@@ -946,6 +1169,9 @@ static inline void cgroup_read(struct cgroup *cg) {
cgroup2_read_blkio(&cg->io_service_bytes, 0);
cgroup2_read_blkio(&cg->io_serviced, 4);
cgroup2_read_cpuacct_stat(&cg->cpuacct_stat);
+ cgroup2_read_pressure(&cg->cpu_pressure);
+ cgroup2_read_pressure(&cg->io_pressure);
+ cgroup2_read_pressure(&cg->memory_pressure);
cgroup_read_memory(&cg->memory, 1);
}
}
@@ -956,7 +1182,7 @@ static inline void read_all_cgroups(struct cgroup *root) {
struct cgroup *cg;
for(cg = root; cg ; cg = cg->next)
- if(cg->enabled && cg->available && !cg->pending_renames)
+ if(cg->enabled && !cg->pending_renames)
cgroup_read(cg);
}
@@ -1016,7 +1242,7 @@ static inline void read_cgroup_network_interfaces(struct cgroup *cg) {
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);
+ netdev_rename_device_add(i->host_device, i->container_device, cg->chart_id, cg->chart_labels);
}
}
@@ -1065,6 +1291,35 @@ static inline char *cgroup_chart_id_strdupz(const char *s) {
return r;
}
+char *parse_k8s_data(struct label **labels, char *data)
+{
+ char *name = mystrsep(&data, " ");
+
+ if (!data) {
+ return name;
+ }
+
+ while (data) {
+ char *key = mystrsep(&data, "=");
+
+ char *value;
+ if (data && *data == ',') {
+ value = "";
+ *data++ = '\0';
+ } else {
+ value = mystrsep(&data, ",");
+ }
+ value = strip_double_quotes(value, 1);
+
+ if (!key || *key == '\0' || !value || *value == '\0')
+ continue;
+
+ *labels = add_label_to_list(*labels, key, value, LABEL_SOURCE_KUBERNETES);
+ }
+
+ return name;
+}
+
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);
@@ -1095,12 +1350,19 @@ static inline void cgroup_get_chart_name(struct cgroup *cg) {
cg->enabled = 0;
}
- if(likely(cg->pending_renames < 2)) {
+ if (likely(cg->pending_renames < 2)) {
+ char *name = s;
+
+ if (!strncmp(s, "k8s_", 4)) {
+ free_label_list(cg->chart_labels);
+ name = parse_k8s_data(&cg->chart_labels, s);
+ }
+
freez(cg->chart_title);
- cg->chart_title = cgroup_title_strdupz(s);
+ cg->chart_title = cgroup_title_strdupz(name);
freez(cg->chart_id);
- cg->chart_id = cgroup_chart_id_strdupz(s);
+ cg->chart_id = cgroup_chart_id_strdupz(name);
cg->hash_chart = simple_hash(cg->chart_id);
}
}
@@ -1132,13 +1394,13 @@ static inline struct cgroup *cgroup_add(const char *id) {
if(cgroup_use_unified_cgroups) cg->options |= CGROUP_OPTIONS_IS_UNIFIED;
- if(!cgroup_root)
- cgroup_root = cg;
+ if(!discovered_cgroup_root)
+ discovered_cgroup_root = cg;
else {
// append it
struct cgroup *e;
- for(e = cgroup_root; e->next ;e = e->next) ;
- e->next = cg;
+ for(e = discovered_cgroup_root; e->discovered_next ;e = e->discovered_next) ;
+ e->discovered_next = cg;
}
cgroup_root_count++;
@@ -1204,24 +1466,23 @@ static inline struct cgroup *cgroup_add(const char *id) {
// detect duplicate cgroups
if(cg->enabled) {
struct cgroup *t;
- for (t = cgroup_root; t; t = t->next) {
+ for (t = discovered_cgroup_root; t; t = t->discovered_next) {
if (t != cg && t->enabled && t->hash_chart == cg->hash_chart && !strcmp(t->chart_id, cg->chart_id)) {
- if (!strncmp(t->chart_id, "/system.slice/", 14) && !strncmp(cg->chart_id, "/init.scope/system.slice/", 25)) {
- error("CGROUP: chart id '%s' already exists with id '%s' and is enabled. Swapping them by enabling cgroup with id '%s' and disabling cgroup with id '%s'.",
- cg->chart_id, t->id, cg->id, t->id);
- debug(D_CGROUP, "Control group with chart id '%s' already exists with id '%s' and is enabled. Swapping them by enabling cgroup with id '%s' and disabling cgroup with id '%s'.",
- cg->chart_id, t->id, cg->id, t->id);
- t->enabled = 0;
- t->options |= CGROUP_OPTIONS_DISABLED_DUPLICATE;
- }
- else {
- error("CGROUP: chart id '%s' already exists with id '%s' and is enabled and available. Disabling cgroup with id '%s'.",
- cg->chart_id, t->id, cg->id);
- debug(D_CGROUP, "Control group with chart id '%s' already exists with id '%s' and is enabled and available. Disabling cgroup with id '%s'.",
- cg->chart_id, t->id, cg->id);
- cg->enabled = 0;
- cg->options |= CGROUP_OPTIONS_DISABLED_DUPLICATE;
- }
+ // TODO: use it after refactoring if system.slice might be scanned before init.scope/system.slice
+ //
+ // if (!strncmp(t->id, "/system.slice/", 14) && !strncmp(cg->id, "/init.scope/system.slice/", 25)) {
+ // error("CGROUP: chart id '%s' already exists with id '%s' and is enabled. Swapping them by enabling cgroup with id '%s' and disabling cgroup with id '%s'.",
+ // cg->chart_id, t->id, cg->id, t->id);
+ // t->enabled = 0;
+ // t->options |= CGROUP_OPTIONS_DISABLED_DUPLICATE;
+ // }
+ // else {}
+ //
+ // https://github.com/netdata/netdata/issues/797#issuecomment-241248884
+ error("CGROUP: chart id '%s' already exists with id '%s' and is enabled and available. Disabling cgroup with id '%s'.",
+ cg->chart_id, t->id, cg->id);
+ cg->enabled = 0;
+ cg->options |= CGROUP_OPTIONS_DISABLED_DUPLICATE;
break;
}
@@ -1236,6 +1497,12 @@ static inline struct cgroup *cgroup_add(const char *id) {
return cg;
}
+static inline void free_pressure(struct pressure *res) {
+ if (res->some.st) rrdset_is_obsolete(res->some.st);
+ if (res->full.st) rrdset_is_obsolete(res->full.st);
+ freez(res->filename);
+}
+
static inline void cgroup_free(struct cgroup *cg) {
debug(D_CGROUP, "Removing cgroup '%s' with chart id '%s' (was %s and %s)", cg->id, cg->chart_id, (cg->enabled)?"enabled":"disabled", (cg->available)?"available":"not available");
@@ -1284,10 +1551,16 @@ static inline void cgroup_free(struct cgroup *cg) {
freez(cg->io_merged.filename);
freez(cg->io_queued.filename);
+ free_pressure(&cg->cpu_pressure);
+ free_pressure(&cg->io_pressure);
+ free_pressure(&cg->memory_pressure);
+
freez(cg->id);
freez(cg->chart_id);
freez(cg->chart_title);
+ free_label_list(cg->chart_labels);
+
freez(cg);
cgroup_root_count--;
@@ -1300,7 +1573,7 @@ static inline struct cgroup *cgroup_find(const char *id) {
uint32_t hash = simple_hash(id);
struct cgroup *cg;
- for(cg = cgroup_root; cg ; cg = cg->next) {
+ for(cg = discovered_cgroup_root; cg ; cg = cg->discovered_next) {
if(hash == cg->hash && strcmp(id, cg->id) == 0)
break;
}
@@ -1426,103 +1699,16 @@ static inline void mark_all_cgroups_as_not_available() {
struct cgroup *cg;
// mark all as not available
- for(cg = cgroup_root; cg ; cg = cg->next) {
+ for(cg = discovered_cgroup_root; cg ; cg = cg->discovered_next) {
cg->available = 0;
}
}
-static inline void cleanup_all_cgroups() {
- struct cgroup *cg = cgroup_root, *last = NULL;
-
- for(; cg ;) {
- if(!cg->available) {
- // enable the first duplicate cgroup
- {
- struct cgroup *t;
- for(t = cgroup_root; t ; t = t->next) {
- if(t != cg && t->available && !t->enabled && t->options & CGROUP_OPTIONS_DISABLED_DUPLICATE && t->hash_chart == cg->hash_chart && !strcmp(t->chart_id, cg->chart_id)) {
- debug(D_CGROUP, "Enabling duplicate of cgroup '%s' with id '%s', because the original with id '%s' stopped.", t->chart_id, t->id, cg->id);
- t->enabled = 1;
- t->options &= ~CGROUP_OPTIONS_DISABLED_DUPLICATE;
- break;
- }
- }
- }
-
- if(!last)
- cgroup_root = cg->next;
- else
- last->next = cg->next;
-
- cgroup_free(cg);
-
- if(!last)
- cg = cgroup_root;
- else
- cg = last->next;
- }
- else {
- last = cg;
- cg = cg->next;
- }
- }
-}
-
-static inline void find_all_cgroups() {
- debug(D_CGROUP, "searching for cgroups");
-
- mark_all_cgroups_as_not_available();
- if(!cgroup_use_unified_cgroups) {
- if(cgroup_enable_cpuacct_stat || cgroup_enable_cpuacct_usage) {
- if(find_dir_in_subdirs(cgroup_cpuacct_base, NULL, found_subdir_in_dir) == -1) {
- cgroup_enable_cpuacct_stat =
- cgroup_enable_cpuacct_usage = CONFIG_BOOLEAN_NO;
- error("CGROUP: disabled cpu statistics.");
- }
- }
-
- if(cgroup_enable_blkio_io || cgroup_enable_blkio_ops || cgroup_enable_blkio_throttle_io || cgroup_enable_blkio_throttle_ops || cgroup_enable_blkio_merged_ops || cgroup_enable_blkio_queued_ops) {
- if(find_dir_in_subdirs(cgroup_blkio_base, NULL, found_subdir_in_dir) == -1) {
- cgroup_enable_blkio_io =
- cgroup_enable_blkio_ops =
- cgroup_enable_blkio_throttle_io =
- cgroup_enable_blkio_throttle_ops =
- cgroup_enable_blkio_merged_ops =
- cgroup_enable_blkio_queued_ops = CONFIG_BOOLEAN_NO;
- error("CGROUP: disabled blkio statistics.");
- }
- }
-
- if(cgroup_enable_memory || cgroup_enable_detailed_memory || cgroup_enable_swap || cgroup_enable_memory_failcnt) {
- if(find_dir_in_subdirs(cgroup_memory_base, NULL, found_subdir_in_dir) == -1) {
- cgroup_enable_memory =
- cgroup_enable_detailed_memory =
- cgroup_enable_swap =
- cgroup_enable_memory_failcnt = CONFIG_BOOLEAN_NO;
- error("CGROUP: disabled memory statistics.");
- }
- }
-
- if(cgroup_search_in_devices) {
- if(find_dir_in_subdirs(cgroup_devices_base, NULL, found_subdir_in_dir) == -1) {
- cgroup_search_in_devices = 0;
- error("CGROUP: disabled devices statistics.");
- }
- }
- }
- else {
- if (find_dir_in_subdirs(cgroup_unified_base, NULL, found_subdir_in_dir) == -1) {
- cgroup_unified_exist = CONFIG_BOOLEAN_NO;
- error("CGROUP: disabled unified cgroups statistics.");
- }
- }
-
- // remove any non-existing cgroups
- cleanup_all_cgroups();
-
+static inline void update_filenames()
+{
struct cgroup *cg;
struct stat buf;
- for(cg = cgroup_root; cg ; cg = cg->next) {
+ for(cg = discovered_cgroup_root; cg ; cg = cg->discovered_next) {
// fprintf(stderr, " >>> CGROUP '%s' (%u - %s) with name '%s'\n", cg->id, cg->hash, cg->available?"available":"stopped", cg->name);
if(unlikely(cg->pending_renames))
@@ -1748,12 +1934,175 @@ static inline void find_all_cgroups() {
else
debug(D_CGROUP, "memory.swap file for cgroup '%s': '%s' does not exist.", cg->id, filename);
}
+
+ if (unlikely(cgroup_enable_pressure_cpu && !cg->cpu_pressure.filename)) {
+ snprintfz(filename, FILENAME_MAX, "%s%s/cpu.pressure", cgroup_unified_base, cg->id);
+ if (likely(stat(filename, &buf) != -1)) {
+ cg->cpu_pressure.filename = strdupz(filename);
+ cg->cpu_pressure.some.enabled = cgroup_enable_pressure_cpu;
+ cg->cpu_pressure.full.enabled = CONFIG_BOOLEAN_NO;
+ debug(D_CGROUP, "cpu.pressure filename for cgroup '%s': '%s'", cg->id, cg->cpu_pressure.filename);
+ } else {
+ debug(D_CGROUP, "cpu.pressure file for cgroup '%s': '%s' does not exist", cg->id, filename);
+ }
+ }
+
+ if (unlikely((cgroup_enable_pressure_io_some || cgroup_enable_pressure_io_full) && !cg->io_pressure.filename)) {
+ snprintfz(filename, FILENAME_MAX, "%s%s/io.pressure", cgroup_unified_base, cg->id);
+ if (likely(stat(filename, &buf) != -1)) {
+ cg->io_pressure.filename = strdupz(filename);
+ cg->io_pressure.some.enabled = cgroup_enable_pressure_io_some;
+ cg->io_pressure.full.enabled = cgroup_enable_pressure_io_full;
+ debug(D_CGROUP, "io.pressure filename for cgroup '%s': '%s'", cg->id, cg->io_pressure.filename);
+ } else {
+ debug(D_CGROUP, "io.pressure file for cgroup '%s': '%s' does not exist", cg->id, filename);
+ }
+ }
+
+ if (unlikely((cgroup_enable_pressure_memory_some || cgroup_enable_pressure_memory_full) && !cg->memory_pressure.filename)) {
+ snprintfz(filename, FILENAME_MAX, "%s%s/memory.pressure", cgroup_unified_base, cg->id);
+ if (likely(stat(filename, &buf) != -1)) {
+ cg->memory_pressure.filename = strdupz(filename);
+ cg->memory_pressure.some.enabled = cgroup_enable_pressure_memory_some;
+ cg->memory_pressure.full.enabled = cgroup_enable_pressure_memory_full;
+ debug(D_CGROUP, "memory.pressure filename for cgroup '%s': '%s'", cg->id, cg->memory_pressure.filename);
+ } else {
+ debug(D_CGROUP, "memory.pressure file for cgroup '%s': '%s' does not exist", cg->id, filename);
+ }
+ }
}
}
+}
+
+static inline void cleanup_all_cgroups() {
+ struct cgroup *cg = discovered_cgroup_root, *last = NULL;
+
+ for(; cg ;) {
+ if(!cg->available) {
+ // enable the first duplicate cgroup
+ {
+ struct cgroup *t;
+ for(t = discovered_cgroup_root; t ; t = t->discovered_next) {
+ if(t != cg && t->available && !t->enabled && t->options & CGROUP_OPTIONS_DISABLED_DUPLICATE && t->hash_chart == cg->hash_chart && !strcmp(t->chart_id, cg->chart_id)) {
+ debug(D_CGROUP, "Enabling duplicate of cgroup '%s' with id '%s', because the original with id '%s' stopped.", t->chart_id, t->id, cg->id);
+ t->enabled = 1;
+ t->options &= ~CGROUP_OPTIONS_DISABLED_DUPLICATE;
+ break;
+ }
+ }
+ }
+
+ if(!last)
+ discovered_cgroup_root = cg->discovered_next;
+ else
+ last->discovered_next = cg->discovered_next;
+
+ cgroup_free(cg);
+
+ if(!last)
+ cg = discovered_cgroup_root;
+ else
+ cg = last->discovered_next;
+ }
+ else {
+ last = cg;
+ cg = cg->discovered_next;
+ }
+ }
+}
+
+static inline void copy_discovered_cgroups()
+{
+ debug(D_CGROUP, "copy discovered cgroups to the main group list");
+
+ struct cgroup *cg;
+
+ for(cg = discovered_cgroup_root; cg ; cg = cg->discovered_next) {
+ cg->next = cg->discovered_next;
+ }
+
+ cgroup_root = discovered_cgroup_root;
+}
+
+static inline void find_all_cgroups() {
+ debug(D_CGROUP, "searching for cgroups");
+
+ mark_all_cgroups_as_not_available();
+ if(!cgroup_use_unified_cgroups) {
+ if(cgroup_enable_cpuacct_stat || cgroup_enable_cpuacct_usage) {
+ if(find_dir_in_subdirs(cgroup_cpuacct_base, NULL, found_subdir_in_dir) == -1) {
+ cgroup_enable_cpuacct_stat =
+ cgroup_enable_cpuacct_usage = CONFIG_BOOLEAN_NO;
+ error("CGROUP: disabled cpu statistics.");
+ }
+ }
+
+ if(cgroup_enable_blkio_io || cgroup_enable_blkio_ops || cgroup_enable_blkio_throttle_io || cgroup_enable_blkio_throttle_ops || cgroup_enable_blkio_merged_ops || cgroup_enable_blkio_queued_ops) {
+ if(find_dir_in_subdirs(cgroup_blkio_base, NULL, found_subdir_in_dir) == -1) {
+ cgroup_enable_blkio_io =
+ cgroup_enable_blkio_ops =
+ cgroup_enable_blkio_throttle_io =
+ cgroup_enable_blkio_throttle_ops =
+ cgroup_enable_blkio_merged_ops =
+ cgroup_enable_blkio_queued_ops = CONFIG_BOOLEAN_NO;
+ error("CGROUP: disabled blkio statistics.");
+ }
+ }
+
+ if(cgroup_enable_memory || cgroup_enable_detailed_memory || cgroup_enable_swap || cgroup_enable_memory_failcnt) {
+ if(find_dir_in_subdirs(cgroup_memory_base, NULL, found_subdir_in_dir) == -1) {
+ cgroup_enable_memory =
+ cgroup_enable_detailed_memory =
+ cgroup_enable_swap =
+ cgroup_enable_memory_failcnt = CONFIG_BOOLEAN_NO;
+ error("CGROUP: disabled memory statistics.");
+ }
+ }
+
+ if(cgroup_search_in_devices) {
+ if(find_dir_in_subdirs(cgroup_devices_base, NULL, found_subdir_in_dir) == -1) {
+ cgroup_search_in_devices = 0;
+ error("CGROUP: disabled devices statistics.");
+ }
+ }
+ }
+ else {
+ if (find_dir_in_subdirs(cgroup_unified_base, NULL, found_subdir_in_dir) == -1) {
+ cgroup_unified_exist = CONFIG_BOOLEAN_NO;
+ error("CGROUP: disabled unified cgroups statistics.");
+ }
+ }
+
+ update_filenames();
+
+ uv_mutex_lock(&cgroup_root_mutex);
+ cleanup_all_cgroups();
+ copy_discovered_cgroups();
+ uv_mutex_unlock(&cgroup_root_mutex);
debug(D_CGROUP, "done searching for cgroups");
}
+void cgroup_discovery_worker(void *ptr)
+{
+ UNUSED(ptr);
+
+ while (!netdata_exit) {
+ uv_mutex_lock(&discovery_thread.mutex);
+ while (!discovery_thread.start_discovery)
+ uv_cond_wait(&discovery_thread.cond_var, &discovery_thread.mutex);
+ discovery_thread.start_discovery = 0;
+ uv_mutex_unlock(&discovery_thread.mutex);
+
+ if (unlikely(netdata_exit))
+ break;
+
+ find_all_cgroups();
+ }
+
+ discovery_thread.exited = 1;
+}
+
// ----------------------------------------------------------------------------
// generate charts
@@ -1807,7 +2156,7 @@ void update_systemd_services_charts(
if(likely(do_cpu)) {
if(unlikely(!st_cpu)) {
char title[CHART_TITLE_MAX + 1];
- snprintfz(title, CHART_TITLE_MAX, "Systemd Services CPU utilization (%d%% = %d core%s)", (processors * 100), processors, (processors > 1) ? "s" : "");
+ snprintfz(title, CHART_TITLE_MAX, "Systemd Services CPU utilization (100%% = 1 core)");
st_cpu = rrdset_create_localhost(
"services"
@@ -2335,7 +2684,7 @@ void update_systemd_services_charts(
// update the values
struct cgroup *cg;
for(cg = cgroup_root; cg ; cg = cg->next) {
- if(unlikely(!cg->available || !cg->enabled || cg->pending_renames || !(cg->options & CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE)))
+ if(unlikely(!cg->enabled || cg->pending_renames || !(cg->options & CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE)))
continue;
if(likely(do_cpu && cg->cpuacct_stat.updated)) {
@@ -2726,7 +3075,7 @@ void update_cgroup_charts(int update_every) {
struct cgroup *cg;
for(cg = cgroup_root; cg ; cg = cg->next) {
- if(unlikely(!cg->available || !cg->enabled || cg->pending_renames))
+ if(unlikely(!cg->enabled || cg->pending_renames))
continue;
if(likely(cgroup_enable_systemd_services && cg->options & CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE)) {
@@ -2750,7 +3099,7 @@ void update_cgroup_charts(int update_every) {
if(likely(cg->cpuacct_stat.updated && cg->cpuacct_stat.enabled == CONFIG_BOOLEAN_YES)) {
if(unlikely(!cg->st_cpu)) {
- snprintfz(title, CHART_TITLE_MAX, "CPU Usage (%d%% = %d core%s) for cgroup %s", (processors * 100), processors, (processors > 1) ? "s" : "", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "CPU Usage (100%% = 1 core)");
cg->st_cpu = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -2766,6 +3115,9 @@ void update_cgroup_charts(int update_every) {
, update_every
, RRDSET_TYPE_STACKED
);
+
+ rrdset_update_labels(cg->st_cpu, cg->chart_labels);
+
if(!(cg->options & CGROUP_OPTIONS_IS_UNIFIED)) {
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);
@@ -2820,7 +3172,7 @@ void update_cgroup_charts(int update_every) {
rrdsetvar_custom_chart_variable_set(cg->chart_var_cpu_limit, value);
if(unlikely(!cg->st_cpu_limit)) {
- snprintfz(title, CHART_TITLE_MAX, "CPU Usage within the limits for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "CPU Usage within the limits");
cg->st_cpu_limit = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -2837,6 +3189,8 @@ void update_cgroup_charts(int update_every) {
, RRDSET_TYPE_LINE
);
+ rrdset_update_labels(cg->st_cpu_limit, cg->chart_labels);
+
if(!(cg->options & CGROUP_OPTIONS_IS_UNIFIED))
rrddim_add(cg->st_cpu_limit, "used", NULL, 1, system_hz, RRD_ALGORITHM_ABSOLUTE);
else
@@ -2873,7 +3227,7 @@ void update_cgroup_charts(int update_every) {
unsigned int i;
if(unlikely(!cg->st_cpu_per_core)) {
- snprintfz(title, CHART_TITLE_MAX, "CPU Usage (%d%% = %d core%s) Per Core for cgroup %s", (processors * 100), processors, (processors > 1) ? "s" : "", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "CPU Usage (100%% = 1 core) Per Core");
cg->st_cpu_per_core = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -2890,6 +3244,8 @@ void update_cgroup_charts(int update_every) {
, RRDSET_TYPE_STACKED
);
+ rrdset_update_labels(cg->st_cpu_per_core, cg->chart_labels);
+
for(i = 0; i < cg->cpuacct_usage.cpus; i++) {
snprintfz(id, RRD_ID_LENGTH_MAX, "cpu%u", i);
rrddim_add(cg->st_cpu_per_core, id, NULL, 100, 1000000000, RRD_ALGORITHM_INCREMENTAL);
@@ -2907,7 +3263,7 @@ void update_cgroup_charts(int update_every) {
if(likely(cg->memory.updated_detailed && cg->memory.enabled_detailed == CONFIG_BOOLEAN_YES)) {
if(unlikely(!cg->st_mem)) {
- snprintfz(title, CHART_TITLE_MAX, "Memory Usage for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Memory Usage");
cg->st_mem = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -2923,6 +3279,9 @@ void update_cgroup_charts(int update_every) {
, update_every
, RRDSET_TYPE_STACKED
);
+
+ rrdset_update_labels(cg->st_mem, cg->chart_labels);
+
if(!(cg->options & CGROUP_OPTIONS_IS_UNIFIED)) {
rrddim_add(cg->st_mem, "cache", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
rrddim_add(cg->st_mem, "rss", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
@@ -2964,7 +3323,7 @@ void update_cgroup_charts(int update_every) {
rrdset_done(cg->st_mem);
if(unlikely(!cg->st_writeback)) {
- snprintfz(title, CHART_TITLE_MAX, "Writeback Memory for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Writeback Memory");
cg->st_writeback = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -2981,6 +3340,8 @@ void update_cgroup_charts(int update_every) {
, RRDSET_TYPE_AREA
);
+ rrdset_update_labels(cg->st_writeback, cg->chart_labels);
+
if(cg->memory.detailed_has_dirty)
rrddim_add(cg->st_writeback, "dirty", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
@@ -2997,7 +3358,7 @@ void update_cgroup_charts(int update_every) {
if(!(cg->options & CGROUP_OPTIONS_IS_UNIFIED)) {
if(unlikely(!cg->st_mem_activity)) {
- snprintfz(title, CHART_TITLE_MAX, "Memory Activity for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Memory Activity");
cg->st_mem_activity = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3014,6 +3375,8 @@ void update_cgroup_charts(int update_every) {
, RRDSET_TYPE_LINE
);
+ rrdset_update_labels(cg->st_mem_activity, cg->chart_labels);
+
rrddim_add(cg->st_mem_activity, "pgpgin", "in", system_page_size, 1024 * 1024, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(cg->st_mem_activity, "pgpgout", "out", -system_page_size, 1024 * 1024, RRD_ALGORITHM_INCREMENTAL);
}
@@ -3026,7 +3389,7 @@ void update_cgroup_charts(int update_every) {
}
if(unlikely(!cg->st_pgfaults)) {
- snprintfz(title, CHART_TITLE_MAX, "Memory Page Faults for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Memory Page Faults");
cg->st_pgfaults = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3043,6 +3406,8 @@ void update_cgroup_charts(int update_every) {
, RRDSET_TYPE_LINE
);
+ rrdset_update_labels(cg->st_pgfaults, cg->chart_labels);
+
rrddim_add(cg->st_pgfaults, "pgfault", NULL, system_page_size, 1024 * 1024, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(cg->st_pgfaults, "pgmajfault", "swap", -system_page_size, 1024 * 1024, RRD_ALGORITHM_INCREMENTAL);
}
@@ -3056,7 +3421,7 @@ void update_cgroup_charts(int update_every) {
if(likely(cg->memory.updated_usage_in_bytes && cg->memory.enabled_usage_in_bytes == CONFIG_BOOLEAN_YES)) {
if(unlikely(!cg->st_mem_usage)) {
- snprintfz(title, CHART_TITLE_MAX, "Used Memory %sfor cgroup %s", (cgroup_used_memory_without_cache && cg->memory.updated_detailed)?"without Cache ":"", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Used Memory %s", (cgroup_used_memory_without_cache && cg->memory.updated_detailed)?"without Cache ":"");
cg->st_mem_usage = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3073,6 +3438,8 @@ void update_cgroup_charts(int update_every) {
, RRDSET_TYPE_STACKED
);
+ rrdset_update_labels(cg->st_mem_usage, cg->chart_labels);
+
rrddim_add(cg->st_mem_usage, "ram", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
rrddim_add(cg->st_mem_usage, "swap", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
}
@@ -3117,7 +3484,7 @@ void update_cgroup_charts(int update_every) {
memory_limit = cg->memory_limit;
if(unlikely(!cg->st_mem_usage_limit)) {
- snprintfz(title, CHART_TITLE_MAX, "Used RAM without Cache within the limits for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Used RAM without Cache within the limits");
cg->st_mem_usage_limit = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3134,6 +3501,8 @@ void update_cgroup_charts(int update_every) {
, RRDSET_TYPE_STACKED
);
+ rrdset_update_labels(cg->st_mem_usage_limit, cg->chart_labels);
+
rrddim_add(cg->st_mem_usage_limit, "available", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
rrddim_add(cg->st_mem_usage_limit, "used", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
}
@@ -3159,7 +3528,7 @@ void update_cgroup_charts(int update_every) {
if(likely(cg->memory.updated_failcnt && cg->memory.enabled_failcnt == CONFIG_BOOLEAN_YES)) {
if(unlikely(!cg->st_mem_failcnt)) {
- snprintfz(title, CHART_TITLE_MAX, "Memory Limit Failures for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Memory Limit Failures");
cg->st_mem_failcnt = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3175,6 +3544,8 @@ void update_cgroup_charts(int update_every) {
, update_every
, RRDSET_TYPE_LINE
);
+
+ rrdset_update_labels(cg->st_mem_failcnt, cg->chart_labels);
rrddim_add(cg->st_mem_failcnt, "failures", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
}
@@ -3187,7 +3558,7 @@ void update_cgroup_charts(int update_every) {
if(likely(cg->io_service_bytes.updated && cg->io_service_bytes.enabled == CONFIG_BOOLEAN_YES)) {
if(unlikely(!cg->st_io)) {
- snprintfz(title, CHART_TITLE_MAX, "I/O Bandwidth (all disks) for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "I/O Bandwidth (all disks)");
cg->st_io = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3204,6 +3575,8 @@ void update_cgroup_charts(int update_every) {
, RRDSET_TYPE_AREA
);
+ rrdset_update_labels(cg->st_io, cg->chart_labels);
+
rrddim_add(cg->st_io, "read", NULL, 1, 1024, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(cg->st_io, "write", NULL, -1, 1024, RRD_ALGORITHM_INCREMENTAL);
}
@@ -3217,7 +3590,7 @@ void update_cgroup_charts(int update_every) {
if(likely(cg->io_serviced.updated && cg->io_serviced.enabled == CONFIG_BOOLEAN_YES)) {
if(unlikely(!cg->st_serviced_ops)) {
- snprintfz(title, CHART_TITLE_MAX, "Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Serviced I/O Operations (all disks)");
cg->st_serviced_ops = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3234,6 +3607,8 @@ void update_cgroup_charts(int update_every) {
, RRDSET_TYPE_LINE
);
+ rrdset_update_labels(cg->st_serviced_ops, cg->chart_labels);
+
rrddim_add(cg->st_serviced_ops, "read", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(cg->st_serviced_ops, "write", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
}
@@ -3247,7 +3622,7 @@ void update_cgroup_charts(int update_every) {
if(likely(cg->throttle_io_service_bytes.updated && cg->throttle_io_service_bytes.enabled == CONFIG_BOOLEAN_YES)) {
if(unlikely(!cg->st_throttle_io)) {
- snprintfz(title, CHART_TITLE_MAX, "Throttle I/O Bandwidth (all disks) for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Throttle I/O Bandwidth (all disks)");
cg->st_throttle_io = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3263,6 +3638,8 @@ void update_cgroup_charts(int update_every) {
, update_every
, RRDSET_TYPE_AREA
);
+
+ rrdset_update_labels(cg->st_throttle_io, cg->chart_labels);
rrddim_add(cg->st_throttle_io, "read", NULL, 1, 1024, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(cg->st_throttle_io, "write", NULL, -1, 1024, RRD_ALGORITHM_INCREMENTAL);
@@ -3277,7 +3654,7 @@ void update_cgroup_charts(int update_every) {
if(likely(cg->throttle_io_serviced.updated && cg->throttle_io_serviced.enabled == CONFIG_BOOLEAN_YES)) {
if(unlikely(!cg->st_throttle_serviced_ops)) {
- snprintfz(title, CHART_TITLE_MAX, "Throttle Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Throttle Serviced I/O Operations (all disks)");
cg->st_throttle_serviced_ops = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3293,6 +3670,8 @@ void update_cgroup_charts(int update_every) {
, update_every
, RRDSET_TYPE_LINE
);
+
+ rrdset_update_labels(cg->st_throttle_serviced_ops, cg->chart_labels);
rrddim_add(cg->st_throttle_serviced_ops, "read", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(cg->st_throttle_serviced_ops, "write", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
@@ -3307,7 +3686,7 @@ void update_cgroup_charts(int update_every) {
if(likely(cg->io_queued.updated && cg->io_queued.enabled == CONFIG_BOOLEAN_YES)) {
if(unlikely(!cg->st_queued_ops)) {
- snprintfz(title, CHART_TITLE_MAX, "Queued I/O Operations (all disks) for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Queued I/O Operations (all disks)");
cg->st_queued_ops = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3323,6 +3702,8 @@ void update_cgroup_charts(int update_every) {
, update_every
, RRDSET_TYPE_LINE
);
+
+ rrdset_update_labels(cg->st_queued_ops, cg->chart_labels);
rrddim_add(cg->st_queued_ops, "read", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
rrddim_add(cg->st_queued_ops, "write", NULL, -1, 1, RRD_ALGORITHM_ABSOLUTE);
@@ -3337,7 +3718,7 @@ void update_cgroup_charts(int update_every) {
if(likely(cg->io_merged.updated && cg->io_merged.enabled == CONFIG_BOOLEAN_YES)) {
if(unlikely(!cg->st_merged_ops)) {
- snprintfz(title, CHART_TITLE_MAX, "Merged I/O Operations (all disks) for cgroup %s", cg->chart_title);
+ snprintfz(title, CHART_TITLE_MAX, "Merged I/O Operations (all disks)");
cg->st_merged_ops = rrdset_create_localhost(
cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
@@ -3353,6 +3734,8 @@ void update_cgroup_charts(int update_every) {
, update_every
, RRDSET_TYPE_LINE
);
+
+ rrdset_update_labels(cg->st_merged_ops, cg->chart_labels);
rrddim_add(cg->st_merged_ops, "read", NULL, 1, 1024, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(cg->st_merged_ops, "write", NULL, -1, 1024, RRD_ALGORITHM_INCREMENTAL);
@@ -3364,6 +3747,171 @@ void update_cgroup_charts(int update_every) {
rrddim_set(cg->st_merged_ops, "write", cg->io_merged.Write);
rrdset_done(cg->st_merged_ops);
}
+
+ if (cg->options & CGROUP_OPTIONS_IS_UNIFIED) {
+ struct pressure *res = &cg->cpu_pressure;
+ if (likely(res->updated && res->some.enabled)) {
+ if (unlikely(!res->some.st)) {
+ RRDSET *chart;
+ snprintfz(title, CHART_TITLE_MAX, "CPU pressure");
+
+ chart = res->some.st = rrdset_create_localhost(
+ cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
+ , "cpu_pressure"
+ , NULL
+ , "cpu"
+ , "cgroup.cpu_pressure"
+ , title
+ , "percentage"
+ , PLUGIN_CGROUPS_NAME
+ , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+ , cgroup_containers_chart_priority + 2200
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_update_labels(chart = res->some.st, cg->chart_labels);
+
+ res->some.rd10 = rrddim_add(chart, "some 10", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ res->some.rd60 = rrddim_add(chart, "some 60", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ res->some.rd300 = rrddim_add(chart, "some 300", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ } else {
+ rrdset_next(res->some.st);
+ }
+
+ update_pressure_chart(&res->some);
+ }
+
+ res = &cg->memory_pressure;
+ if (likely(res->updated && res->some.enabled)) {
+ if (unlikely(!res->some.st)) {
+ RRDSET *chart;
+ snprintfz(title, CHART_TITLE_MAX, "Memory pressure");
+
+ chart = res->some.st = rrdset_create_localhost(
+ cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
+ , "mem_pressure"
+ , NULL
+ , "mem"
+ , "cgroup.memory_pressure"
+ , title
+ , "percentage"
+ , PLUGIN_CGROUPS_NAME
+ , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+ , cgroup_containers_chart_priority + 2300
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_update_labels(chart = res->some.st, cg->chart_labels);
+
+ res->some.rd10 = rrddim_add(chart, "some 10", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ res->some.rd60 = rrddim_add(chart, "some 60", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ res->some.rd300 = rrddim_add(chart, "some 300", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ } else {
+ rrdset_next(res->some.st);
+ }
+
+ update_pressure_chart(&res->some);
+ }
+
+ if (likely(res->updated && res->full.enabled)) {
+ if (unlikely(!res->full.st)) {
+ RRDSET *chart;
+ snprintfz(title, CHART_TITLE_MAX, "Memory full pressure");
+
+ chart = res->full.st = rrdset_create_localhost(
+ cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
+ , "mem_full_pressure"
+ , NULL
+ , "mem"
+ , "cgroup.memory_full_pressure"
+ , title
+ , "percentage"
+ , PLUGIN_CGROUPS_NAME
+ , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+ , cgroup_containers_chart_priority + 2350
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_update_labels(chart = res->full.st, cg->chart_labels);
+
+ res->full.rd10 = rrddim_add(chart, "full 10", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ res->full.rd60 = rrddim_add(chart, "full 60", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ res->full.rd300 = rrddim_add(chart, "full 300", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ } else {
+ rrdset_next(res->full.st);
+ }
+
+ update_pressure_chart(&res->full);
+ }
+
+ res = &cg->io_pressure;
+ if (likely(res->updated && res->some.enabled)) {
+ if (unlikely(!res->some.st)) {
+ RRDSET *chart;
+ snprintfz(title, CHART_TITLE_MAX, "I/O pressure");
+
+ chart = res->some.st = rrdset_create_localhost(
+ cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
+ , "io_pressure"
+ , NULL
+ , "disk"
+ , "cgroup.io_pressure"
+ , title
+ , "percentage"
+ , PLUGIN_CGROUPS_NAME
+ , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+ , cgroup_containers_chart_priority + 2400
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_update_labels(chart = res->some.st, cg->chart_labels);
+
+ res->some.rd10 = rrddim_add(chart, "some 10", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ res->some.rd60 = rrddim_add(chart, "some 60", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ res->some.rd300 = rrddim_add(chart, "some 300", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ } else {
+ rrdset_next(res->some.st);
+ }
+
+ update_pressure_chart(&res->some);
+ }
+
+ if (likely(res->updated && res->full.enabled)) {
+ if (unlikely(!res->full.st)) {
+ RRDSET *chart;
+ snprintfz(title, CHART_TITLE_MAX, "I/O full pressure");
+
+ chart = res->full.st = rrdset_create_localhost(
+ cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
+ , "io_full_pressure"
+ , NULL
+ , "disk"
+ , "cgroup.io_full_pressure"
+ , title
+ , "percentage"
+ , PLUGIN_CGROUPS_NAME
+ , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+ , cgroup_containers_chart_priority + 2450
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_update_labels(chart = res->full.st, cg->chart_labels);
+
+ res->full.rd10 = rrddim_add(chart, "full 10", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ res->full.rd60 = rrddim_add(chart, "full 60", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ res->full.rd300 = rrddim_add(chart, "full 300", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
+ } else {
+ rrdset_next(res->full.st);
+ }
+
+ update_pressure_chart(&res->full);
+ }
+ }
}
if(likely(cgroup_enable_systemd_services))
@@ -3385,6 +3933,21 @@ static void cgroup_main_cleanup(void *ptr) {
info("cleaning up...");
+ usec_t max = 2 * USEC_PER_SEC, step = 50000;
+
+ if (!discovery_thread.exited) {
+ info("stopping discovery thread worker");
+ uv_mutex_unlock(&discovery_thread.mutex);
+ discovery_thread.start_discovery = 1;
+ uv_cond_signal(&discovery_thread.cond_var);
+ }
+
+ while (!discovery_thread.exited && max > 0) {
+ max -= step;
+ info("waiting for discovery thread to finish...");
+ sleep_usec(step);
+ }
+
static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
}
@@ -3400,6 +3963,31 @@ void *cgroups_main(void *ptr) {
RRDSET *stcpu_thread = NULL;
+ if (uv_mutex_init(&cgroup_root_mutex)) {
+ error("CGROUP: cannot initialize mutex for the main cgroup list");
+ goto exit;
+ }
+
+ // dispatch a discovery worker thread
+ discovery_thread.start_discovery = 0;
+ discovery_thread.exited = 0;
+
+ if (uv_mutex_init(&discovery_thread.mutex)) {
+ error("CGROUP: cannot initialize mutex for discovery thread");
+ goto exit;
+ }
+ if (uv_cond_init(&discovery_thread.cond_var)) {
+ error("CGROUP: cannot initialize conditional variable for discovery thread");
+ goto exit;
+ }
+
+ int error = uv_thread_create(&discovery_thread.thread, cgroup_discovery_worker, NULL);
+ if (error) {
+ error("CGROUP: cannot create tread worker. uv_thread_create(): %s", uv_strerror(error));
+ goto exit;
+ }
+ uv_thread_set_name_np(discovery_thread.thread, "PLUGIN[cgroups]");
+
heartbeat_t hb;
heartbeat_init(&hb);
usec_t step = cgroup_update_every * USEC_PER_SEC;
@@ -3409,19 +3997,18 @@ void *cgroups_main(void *ptr) {
usec_t hb_dt = heartbeat_next(&hb, step);
if(unlikely(netdata_exit)) break;
- // BEGIN -- the job to be done
-
find_dt += hb_dt;
if(unlikely(find_dt >= find_every || cgroups_check)) {
- find_all_cgroups();
+ uv_cond_signal(&discovery_thread.cond_var);
+ discovery_thread.start_discovery = 1;
find_dt = 0;
cgroups_check = 0;
}
+ uv_mutex_lock(&cgroup_root_mutex);
read_all_cgroups(cgroup_root);
update_cgroup_charts(cgroup_update_every);
-
- // END -- the job is done
+ uv_mutex_unlock(&cgroup_root_mutex);
// --------------------------------------------------------------------
@@ -3457,6 +4044,7 @@ void *cgroups_main(void *ptr) {
}
}
+exit:
netdata_thread_cleanup_pop(1);
return NULL;
}
diff --git a/collectors/cgroups.plugin/sys_fs_cgroup.h b/collectors/cgroups.plugin/sys_fs_cgroup.h
index 09ce5e3fb..155330ff1 100644
--- a/collectors/cgroups.plugin/sys_fs_cgroup.h
+++ b/collectors/cgroups.plugin/sys_fs_cgroup.h
@@ -28,4 +28,6 @@ extern void *cgroups_main(void *ptr);
#endif // (TARGET_OS == OS_LINUX)
+extern char *parse_k8s_data(struct label **labels, char *data);
+
#endif //NETDATA_SYS_FS_CGROUP_H
diff --git a/collectors/cgroups.plugin/tests/test_cgroups_plugin.c b/collectors/cgroups.plugin/tests/test_cgroups_plugin.c
new file mode 100644
index 000000000..be8ea2c48
--- /dev/null
+++ b/collectors/cgroups.plugin/tests/test_cgroups_plugin.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "test_cgroups_plugin.h"
+#include "libnetdata/required_dummies.h"
+
+RRDHOST *localhost;
+int netdata_zero_metrics_enabled = 1;
+struct config netdata_config;
+char *netdata_configured_primary_plugins_dir = NULL;
+
+static void test_parse_k8s_data(void **state)
+{
+ UNUSED(state);
+
+ struct label *labels = (struct label *)0xff;
+
+ struct k8s_test_data {
+ char *data;
+ char *name;
+ char *key[3];
+ char *value[3];
+ };
+
+ struct k8s_test_data test_data[] = {
+ // One label
+ { .data = "name label1=\"value1\"",
+ .name = "name",
+ .key[0] = "label1", .value[0] = "value1" },
+
+ // Three labels
+ { .data = "name label1=\"value1\",label2=\"value2\",label3=\"value3\"",
+ .name = "name",
+ .key[0] = "label1", .value[0] = "value1",
+ .key[1] = "label2", .value[1] = "value2",
+ .key[2] = "label3", .value[2] = "value3" },
+
+ // Comma at the end of the data string
+ { .data = "name label1=\"value1\",",
+ .name = "name",
+ .key[0] = "label1", .value[0] = "value1" },
+
+ // Equals sign in the value
+ { .data = "name label1=\"value=1\"",
+ .name = "name",
+ .key[0] = "label1", .value[0] = "value=1" },
+
+ // Double quotation mark in the value
+ { .data = "name label1=\"value\"1\"",
+ .name = "name",
+ .key[0] = "label1", .value[0] = "value" },
+
+ // Escaped double quotation mark in the value
+ { .data = "name label1=\"value\\\"1\"",
+ .name = "name",
+ .key[0] = "label1", .value[0] = "value\\\"1" },
+
+ // Equals sign in the key
+ { .data = "name label=1=\"value1\"",
+ .name = "name",
+ .key[0] = "label", .value[0] = "1=\"value1\"" },
+
+ // Skipped value
+ { .data = "name label1=,label2=\"value2\"",
+ .name = "name",
+ .key[0] = "label2", .value[0] = "value2" },
+
+ // A pair of equals signs
+ { .data = "name= =",
+ .name = "name=" },
+
+ // A pair of commas
+ { .data = "name, ,",
+ .name = "name," },
+
+ { .data = NULL }
+ };
+
+ for (int i = 0; test_data[i].data != NULL; i++) {
+ char *data = strdup(test_data[i].data);
+
+ for (int l = 0; l < 3 && test_data[i].key[l] != NULL; l++) {
+ char *key = test_data[i].key[l];
+ char *value = test_data[i].value[l];
+
+ expect_function_call(__wrap_add_label_to_list);
+ expect_value(__wrap_add_label_to_list, l, 0xff);
+ expect_string(__wrap_add_label_to_list, key, key);
+ expect_string(__wrap_add_label_to_list, value, value);
+ expect_value(__wrap_add_label_to_list, label_source, LABEL_SOURCE_KUBERNETES);
+ }
+
+ char *name = parse_k8s_data(&labels, data);
+
+ assert_string_equal(name, test_data[i].name);
+ assert_ptr_equal(labels, 0xff);
+
+ free(data);
+ }
+}
+
+int main(void)
+{
+ const struct CMUnitTest tests[] = {
+ cmocka_unit_test(test_parse_k8s_data),
+ };
+
+ int test_res = cmocka_run_group_tests_name("test_parse_k8s_data", tests, NULL, NULL);
+
+ return test_res;
+}
diff --git a/collectors/cgroups.plugin/tests/test_cgroups_plugin.h b/collectors/cgroups.plugin/tests/test_cgroups_plugin.h
new file mode 100644
index 000000000..3d68e9230
--- /dev/null
+++ b/collectors/cgroups.plugin/tests/test_cgroups_plugin.h
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef TEST_CGROUPS_PLUGIN_H
+#define TEST_CGROUPS_PLUGIN_H 1
+
+#include "libnetdata/libnetdata.h"
+
+#include "../sys_fs_cgroup.h"
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <stdint.h>
+#include <cmocka.h>
+
+#endif /* TEST_CGROUPS_PLUGIN_H */
diff --git a/collectors/cgroups.plugin/tests/test_doubles.c b/collectors/cgroups.plugin/tests/test_doubles.c
new file mode 100644
index 000000000..5572fb2f5
--- /dev/null
+++ b/collectors/cgroups.plugin/tests/test_doubles.c
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "test_cgroups_plugin.h"
+
+void rrdset_is_obsolete(RRDSET *st)
+{
+ UNUSED(st);
+}
+
+void rrdset_isnot_obsolete(RRDSET *st)
+{
+ UNUSED(st);
+}
+
+struct mountinfo *mountinfo_read(int do_statvfs)
+{
+ UNUSED(do_statvfs);
+
+ return NULL;
+}
+
+struct mountinfo *
+mountinfo_find_by_filesystem_mount_source(struct mountinfo *root, const char *filesystem, const char *mount_source)
+{
+ UNUSED(root);
+ UNUSED(filesystem);
+ UNUSED(mount_source);
+
+ return NULL;
+}
+
+struct mountinfo *
+mountinfo_find_by_filesystem_super_option(struct mountinfo *root, const char *filesystem, const char *super_options)
+{
+ UNUSED(root);
+ UNUSED(filesystem);
+ UNUSED(super_options);
+
+ return NULL;
+}
+
+void mountinfo_free_all(struct mountinfo *mi)
+{
+ UNUSED(mi);
+}
+
+struct label *__wrap_add_label_to_list(struct label *l, char *key, char *value, LABEL_SOURCE label_source)
+{
+ function_called();
+ check_expected_ptr(l);
+ check_expected_ptr(key);
+ check_expected_ptr(value);
+ check_expected(label_source);
+ return l;
+}
+
+void rrdset_update_labels(RRDSET *st, struct label *labels)
+{
+ UNUSED(st);
+ UNUSED(labels);
+}
+
+RRDSET *rrdset_create_custom(
+ RRDHOST *host, const char *type, const char *id, const char *name, const char *family, const char *context,
+ const char *title, const char *units, const char *plugin, const char *module, long priority, int update_every,
+ RRDSET_TYPE chart_type, RRD_MEMORY_MODE memory_mode, long history_entries)
+{
+ UNUSED(host);
+ UNUSED(type);
+ UNUSED(id);
+ UNUSED(name);
+ UNUSED(family);
+ UNUSED(context);
+ UNUSED(title);
+ UNUSED(units);
+ UNUSED(plugin);
+ UNUSED(module);
+ UNUSED(priority);
+ UNUSED(update_every);
+ UNUSED(chart_type);
+ UNUSED(memory_mode);
+ UNUSED(history_entries);
+
+ return NULL;
+}
+
+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)
+{
+ UNUSED(st);
+ UNUSED(id);
+ UNUSED(name);
+ UNUSED(multiplier);
+ UNUSED(divisor);
+ UNUSED(algorithm);
+ UNUSED(memory_mode);
+
+ return NULL;
+}
+
+collected_number rrddim_set(RRDSET *st, const char *id, collected_number value)
+{
+ UNUSED(st);
+ UNUSED(id);
+ UNUSED(value);
+
+ return 0;
+}
+
+collected_number rrddim_set_by_pointer(RRDSET *st, RRDDIM *rd, collected_number value)
+{
+ UNUSED(st);
+ UNUSED(rd);
+ UNUSED(value);
+
+ return 0;
+}
+
+RRDSETVAR *rrdsetvar_custom_chart_variable_create(RRDSET *st, const char *name)
+{
+ UNUSED(st);
+ UNUSED(name);
+
+ return NULL;
+}
+
+void rrdsetvar_custom_chart_variable_set(RRDSETVAR *rs, calculated_number value)
+{
+ UNUSED(rs);
+ UNUSED(value);
+}
+
+void rrdset_next_usec(RRDSET *st, usec_t microseconds)
+{
+ UNUSED(st);
+ UNUSED(microseconds);
+}
+
+void rrdset_done(RRDSET *st)
+{
+ UNUSED(st);
+}
+
+void update_pressure_chart(struct pressure_chart *chart)
+{
+ UNUSED(chart);
+}
+
+void netdev_rename_device_add(
+ const char *host_device, const char *container_device, const char *container_name, struct label *labels)
+{
+ UNUSED(host_device);
+ UNUSED(container_device);
+ UNUSED(container_name);
+ UNUSED(labels);
+}
+
+void netdev_rename_device_del(const char *host_device)
+{
+ UNUSED(host_device);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-03 03:24:06 +0000