src/collectors/cgroups.plugin/cgroup-name.sh.in
#!/usr/bin/env bash
#shellcheck disable=SC2001
# netdata
# real-time performance and health monitoring, done right!
# (C) 2023 Netdata Inc.
# SPDX-License-Identifier: GPL-3.0-or-later
#
# Script to find a better name for cgroups
#
export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin:@sbindir_POST@"
export LC_ALL=C
cmd_line="'${0}' $(printf "'%s' " "${@}")"
# -----------------------------------------------------------------------------
# logging
PROGRAM_NAME="$(basename "${0}")"
# these should be the same with syslog() priorities
NDLP_EMERG=0 # system is unusable
NDLP_ALERT=1 # action must be taken immediately
NDLP_CRIT=2 # critical conditions
NDLP_ERR=3 # error conditions
NDLP_WARN=4 # warning conditions
NDLP_NOTICE=5 # normal but significant condition
NDLP_INFO=6 # informational
NDLP_DEBUG=7 # debug-level messages
# the max (numerically) log level we will log
LOG_LEVEL=$NDLP_INFO
set_log_min_priority() {
case "${NETDATA_LOG_LEVEL,,}" in
"emerg" | "emergency")
LOG_LEVEL=$NDLP_EMERG
;;
"alert")
LOG_LEVEL=$NDLP_ALERT
;;
"crit" | "critical")
LOG_LEVEL=$NDLP_CRIT
;;
"err" | "error")
LOG_LEVEL=$NDLP_ERR
;;
"warn" | "warning")
LOG_LEVEL=$NDLP_WARN
;;
"notice")
LOG_LEVEL=$NDLP_NOTICE
;;
"info")
LOG_LEVEL=$NDLP_INFO
;;
"debug")
LOG_LEVEL=$NDLP_DEBUG
;;
esac
}
set_log_min_priority
log() {
local level="${1}"
shift 1
[[ -n "$level" && -n "$LOG_LEVEL" && "$level" -gt "$LOG_LEVEL" ]] && return
systemd-cat-native --log-as-netdata --newline="--NEWLINE--" <<EOFLOG
INVOCATION_ID=${NETDATA_INVOCATION_ID}
SYSLOG_IDENTIFIER=${PROGRAM_NAME}
PRIORITY=${level}
THREAD_TAG=cgroup-name
ND_LOG_SOURCE=collector
ND_REQUEST=${cmd_line}
MESSAGE=${*//\\n/--NEWLINE--}
EOFLOG
# AN EMPTY LINE IS NEEDED ABOVE
}
info() {
log "$NDLP_INFO" "${@}"
}
warning() {
log "$NDLP_WARN" "${@}"
}
error() {
log "$NDLP_ERR" "${@}"
}
fatal() {
log "$NDLP_ALERT" "${@}"
exit 1
}
debug() {
log "$NDLP_DEBUG" "${@}"
}
# -----------------------------------------------------------------------------
function parse_docker_like_inspect_output() {
local output="${1}"
eval "$(grep -E "^(NOMAD_NAMESPACE|NOMAD_JOB_NAME|NOMAD_TASK_NAME|NOMAD_SHORT_ALLOC_ID|CONT_NAME|IMAGE_NAME)=" <<<"$output")"
if [ -n "$NOMAD_NAMESPACE" ] && [ -n "$NOMAD_JOB_NAME" ] && [ -n "$NOMAD_TASK_NAME" ] && [ -n "$NOMAD_SHORT_ALLOC_ID" ]; then
NAME="${NOMAD_NAMESPACE}-${NOMAD_JOB_NAME}-${NOMAD_TASK_NAME}-${NOMAD_SHORT_ALLOC_ID}"
else
NAME=$(echo "${CONT_NAME}" | sed 's|^/||')
fi
if [ -n "${IMAGE_NAME}" ]; then
LABELS="image=\"${IMAGE_NAME}\""
fi
}
function docker_like_get_name_command() {
local command="${1}"
local id="${2}"
info "Running command: ${command} inspect --format='{{range .Config.Env}}{{println .}}{{end}}CONT_NAME={{ .Name}}' \"${id}\""
if OUTPUT="$(${command} inspect --format='{{range .Config.Env}}{{println .}}{{end}}CONT_NAME={{ .Name}}{{println}}IMAGE_NAME={{ .Config.Image}}' "${id}")" &&
[ -n "$OUTPUT" ]; then
parse_docker_like_inspect_output "$OUTPUT"
fi
return 0
}
function docker_like_get_name_api() {
local host_var="${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
if OUTPUT=$(echo "${JSON}" | jq -r '.Config.Env[],"CONT_NAME=\(.Name)","IMAGE_NAME=\(.Config.Image)"') && [ -n "$OUTPUT" ]; then
parse_docker_like_inspect_output "$OUTPUT"
fi
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 ','
}
function remove_lbl() {
local orig_labels lbl_name
orig_labels="${1}"
lbl_name="${2}"
IFS=, read -ra labels <<< "$orig_labels"
local new_labels
for l in "${labels[@]}"; do
IFS="=" read -r lname lval <<< "$l"
[ "$lbl_name" != "$lname" ] && new_labels+="${l},"
done
echo "${new_labels:0:-1}" # trim last ','
}
function k8s_is_pause_container() {
local cgroup_path="${1}"
local file
if [ -d "${NETDATA_HOST_PREFIX}/sys/fs/cgroup/cpuacct" ]; then
file="${NETDATA_HOST_PREFIX}/sys/fs/cgroup/cpuacct/$cgroup_path/cgroup.procs"
else
file="${NETDATA_HOST_PREFIX}/sys/fs/cgroup/$cgroup_path/cgroup.procs"
fi
[ ! -f "$file" ] && return 1
local procs
IFS= read -rd' ' procs 2>/dev/null <"$file"
#shellcheck disable=SC2206
procs=($procs)
[ "${#procs[@]}" -ne 1 ] && return 1
IFS= read -r comm 2>/dev/null <"/proc/${procs[0]}/comm"
[ "$comm" == "pause" ]
return
}
function k8s_gcp_get_cluster_name() {
local header url id loc name
header="Metadata-Flavor: Google"
url="http://metadata/computeMetadata/v1"
if id=$(curl --fail -s -m 3 --noproxy "*" -H "$header" "$url/project/project-id") &&
loc=$(curl --fail -s -m 3 --noproxy "*" -H "$header" "$url/instance/attributes/cluster-location") &&
name=$(curl --fail -s -m 3 --noproxy "*" -H "$header" "$url/instance/attributes/cluster-name") &&
[ -n "$id" ] && [ -n "$loc" ] && [ -n "$name" ]; then
echo "gke_${id}_${loc}_${name}"
return 0
fi
return 1
}
# 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/*/ (cri=docker, cgroups=v1):
# |-- kubepods
# | |-- burstable
# | | |-- pod98cee708-023b-11eb-933d-42010a800193
# | | | |-- 922161c98e6ea450bf665226cdc64ca2aa3e889934c2cff0aec4325f8f78ac03
# | `-- pode314bbac-d577-11ea-a171-42010a80013b
# | |-- 7d505356b04507de7b710016d540b2759483ed5f9136bb01a80872b08f771930
#
# GKE /sys/fs/cgroup/*/ (cri=containerd, cgroups=v1):
# |-- kubepods.slice
# | |-- kubepods-besteffort.slice
# | | |-- kubepods-besteffort-pode1465238_4518_4c21_832f_fd9f87033dad.slice
# | | | |-- cri-containerd-66be9b2efdf4d85288c319b8c1a2f50d2439b5617e36f45d9d0d0be1381113be.scope
# | `-- kubepods-pod91f5b561_369f_4103_8015_66391059996a.slice
# | |-- cri-containerd-24c53b774a586f06abc058619b47f71d9d869ac50c92898adbd199106fd0aaeb.scope
#
# GKE /sys/fs/cgroup/*/ (cri=crio, cgroups=v1):
# |-- kubepods.slice
# | |-- kubepods-besteffort.slice
# | | |-- kubepods-besteffort-podad412dfe_3589_4056_965a_592356172968.slice
# | | | |-- crio-77b019312fd9825828b70214b2c94da69c30621af2a7ee06f8beace4bc9439e5.scope
#
# Minikube (v1.8.2) /sys/fs/cgroup/*/ (cri=docker, cgroups=v1):
# |-- kubepods.slice
# | |-- kubepods-besteffort.slice
# | | |-- kubepods-besteffort-pod10fb5647_c724_400c_b9cc_0e6eae3110e7.slice
# | | | |-- docker-36e5eb5056dfdf6dbb75c0c44a1ecf23217fe2c50d606209d8130fcbb19fb5a7.scope
#
# kind v0.14.0
# |-- kubelet.slice
# | |-- kubelet-kubepods.slice
# | | |-- kubelet-kubepods-besteffort.slice
# | | | |-- kubelet-kubepods-besteffort-pod7881ed9e_c63e_4425_b5e0_ac55a08ae939.slice
# | | | | |-- cri-containerd-00c7939458bffc416bb03451526e9fde13301d6654cfeadf5b4964a7fb5be1a9.scope
#
# NOTE: cgroups plugin
# - uses '_' to join dir names (so it is <parent>_<child>_<child>_...)
# - replaces '.' with '-'
local fn="${FUNCNAME[0]}"
local cgroup_path="${1}"
local id="${2}"
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 [[ $clean_id =~ .+pod[a-f0-9_-]+_(docker|crio|cri-containerd)-([a-f0-9]+)$ ]]; then
# ...pod<POD_UID>_(docker|crio|cri-containerd)-<CONTAINER_ID> (POD_UID w/ "_")
cntr_id=${BASH_REMATCH[2]}
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 3
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 [ -n "$cntr_id" ] && k8s_is_pause_container "$cgroup_path"; then
return 3
fi
if ! command -v jq > /dev/null 2>&1; then
warning "${fn}: 'jq' command not available."
return 1
fi
local tmp_kube_cluster_name="${TMPDIR:-"/tmp"}/netdata-cgroups-k8s-cluster-name"
local tmp_kube_system_ns_uid_file="${TMPDIR:-"/tmp"}/netdata-cgroups-kubesystem-uid"
local tmp_kube_containers_file="${TMPDIR:-"/tmp"}/netdata-cgroups-containers"
local kube_cluster_name
local kube_system_uid
local labels
if [ -n "$cntr_id" ] &&
[ -f "$tmp_kube_cluster_name" ] &&
[ -f "$tmp_kube_system_ns_uid_file" ] &&
[ -f "$tmp_kube_containers_file" ] &&
labels=$(grep "$cntr_id" "$tmp_kube_containers_file" 2>/dev/null); then
IFS= read -r kube_system_uid 2>/dev/null <"$tmp_kube_system_ns_uid_file"
IFS= read -r kube_cluster_name 2>/dev/null <"$tmp_kube_cluster_name"
else
IFS= read -r kube_system_uid 2>/dev/null <"$tmp_kube_system_ns_uid_file"
IFS= read -r kube_cluster_name 2>/dev/null <"$tmp_kube_cluster_name"
[ -z "$kube_cluster_name" ] && ! kube_cluster_name=$(k8s_gcp_get_cluster_name) && kube_cluster_name="unknown"
local kube_system_ns
local pods
if [ -n "${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_uid" ]; then
url="https://$host/api/v1/namespaces/kube-system"
# FIX: check HTTP response code
if ! kube_system_ns=$(curl --fail -sSk -H "$header" "$url" 2>&1); then
warning "${fn}: error on curl '${url}': ${kube_system_ns}."
fi
fi
local url
if [ -n "${USE_KUBELET_FOR_PODS_METADATA}" ]; then
url="${KUBELET_URL:-https://localhost:10250}/pods"
else
url="https://$host/api/v1/pods"
[ -n "$MY_NODE_NAME" ] && url+="?fieldSelector=spec.nodeName==$MY_NODE_NAME"
fi
# FIX: check HTTP response code
if ! pods=$(curl --fail -sSk -H "$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_uid" ]; then
if ! kube_system_ns=$(kubectl --kubeconfig="$KUBE_CONFIG" get namespaces kube-system -o json 2>&1); then
warning "${fn}: error on 'kubectl': ${kube_system_ns}."
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
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|cri-o|containerd)://";"")' # containerID: docker://a346da9bc0e3eaba6b295f64ac16e02f2190db2cef570835706a9e7a36e2c722
local containers
if ! containers=$(jq -r "${jq_filter}" <<<"$pods" 2>&1); then
warning "${fn}: error on 'jq' parse pods: ${containers}."
return 1
fi
[ -n "$kube_cluster_name" ] && echo "$kube_cluster_name" >"$tmp_kube_cluster_name" 2>/dev/null
[ -n "$kube_system_ns" ] && [ -n "$kube_system_uid" ] && echo "$kube_system_uid" >"$tmp_kube_system_ns_uid_file" 2>/dev/null
echo "$containers" >"$tmp_kube_containers_file" 2>/dev/null
fi
local qos_class
if [[ $clean_id =~ .+(besteffort|burstable) ]]; then
qos_class="${BASH_REMATCH[1]}"
else
qos_class="guaranteed"
fi
# available labels:
# namespace, pod_name, pod_uid, container_name, container_id, node_name
if [ -n "$cntr_id" ]; then
if [ -n "$labels" ] || labels=$(grep "$cntr_id" <<< "$containers" 2> /dev/null); then
labels+=',kind="container"'
labels+=",qos_class=\"$qos_class\""
[ -n "$kube_system_uid" ] && [ "$kube_system_uid" != "null" ] && labels+=",cluster_id=\"$kube_system_uid\""
[ -n "$kube_cluster_name" ] && [ "$kube_cluster_name" != "unknown" ] && labels+=",cluster_name=\"$kube_cluster_name\""
name="cntr"
name+="_$(get_lbl_val "$labels" namespace)"
name+="_$(get_lbl_val "$labels" pod_name)"
name+="_$(get_lbl_val "$labels" container_name)"
labels=$(remove_lbl "$labels" "container_id")
labels=$(remove_lbl "$labels" "pod_uid")
labels=$(add_lbl_prefix "$labels" "k8s_")
name+=" $labels"
else
return 2
fi
elif [ -n "$pod_uid" ]; then
if labels=$(grep "$pod_uid" -m 1 <<< "$containers" 2> /dev/null); then
labels="${labels%%,container_*}"
labels+=',kind="pod"'
labels+=",qos_class=\"$qos_class\""
[ -n "$kube_system_uid" ] && [ "$kube_system_uid" != "null" ] && labels+=",cluster_id=\"$kube_system_uid\""
[ -n "$kube_cluster_name" ] && [ "$kube_cluster_name" != "unknown" ] && labels+=",cluster_name=\"$kube_cluster_name\""
name="pod"
name+="_$(get_lbl_val "$labels" namespace)"
name+="_$(get_lbl_val "$labels" pod_name)"
labels=$(remove_lbl "$labels" "pod_uid")
labels=$(add_lbl_prefix "$labels" "k8s_")
name+=" $labels"
else
return 2
fi
fi
# jq filter nonexistent field and nonexistent label value is 'null'
if [[ $name =~ _null(_|$) ]]; then
warning "${fn}: invalid name: $name (cgroup '$id')"
if [ -n "${USE_KUBELET_FOR_PODS_METADATA}" ]; then
# local data is cached and may not contain the correct id
return 2
fi
return 1
fi
echo "$name"
[ -n "$name" ]
return
}
function k8s_get_name() {
local fn="${FUNCNAME[0]}"
local cgroup_path="${1}"
local id="${2}"
local kubepod_name=""
kubepod_name=$(k8s_get_kubepod_name "$cgroup_path" "$id")
case "$?" in
0)
kubepod_name="k8s_${kubepod_name}"
local name labels
name=${kubepod_name%% *}
labels=${kubepod_name#* }
if [ "$name" != "$labels" ]; then
info "${fn}: cgroup '${id}' has chart name '${name}', labels '${labels}"
NAME="$name"
LABELS="$labels"
else
info "${fn}: cgroup '${id}' has chart name '${NAME}'"
NAME="$name"
fi
EXIT_CODE=$EXIT_SUCCESS
;;
1)
NAME="k8s_${id}"
warning "${fn}: cannot find the name of cgroup with id '${id}'. Setting name to ${NAME} and enabling it."
EXIT_CODE=$EXIT_SUCCESS
;;
2)
NAME="k8s_${id}"
warning "${fn}: cannot find the name of cgroup with id '${id}'. Setting name to ${NAME} and asking for retry."
EXIT_CODE=$EXIT_RETRY
;;
*)
NAME="k8s_${id}"
warning "${fn}: cannot find the name of cgroup with id '${id}'. Setting name to ${NAME} and disabling it."
EXIT_CODE=$EXIT_DISABLE
;;
esac
}
function docker_get_name() {
local id="${1}"
# See https://github.com/netdata/netdata/pull/13523 for details
if command -v snap >/dev/null 2>&1 && snap list docker >/dev/null 2>&1; then
docker_like_get_name_api DOCKER_HOST "${id}"
elif 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 '${id}'"
EXIT_CODE=$EXIT_RETRY
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 '${CGROUP}'."
fi
}
function podman_get_name() {
local id="${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}'"
EXIT_CODE=$EXIT_RETRY
NAME="${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 '${CGROUP}'."
fi
}
# -----------------------------------------------------------------------------
DOCKER_HOST="${DOCKER_HOST:=/var/run/docker.sock}"
PODMAN_HOST="${PODMAN_HOST:=/run/podman/podman.sock}"
CGROUP_PATH="${1}" # the path as it is (e.g. '/docker/efcf4c409')
CGROUP="${2}" # the modified path (e.g. 'docker_efcf4c409')
EXIT_SUCCESS=0
EXIT_RETRY=2
EXIT_DISABLE=3
EXIT_CODE=$EXIT_SUCCESS
NAME=
LABELS=
# -----------------------------------------------------------------------------
if [ -z "${CGROUP}" ]; then
fatal "called without a cgroup name. Nothing to do."
fi
if [ -z "${NAME}" ]; then
if [[ ${CGROUP} =~ ^.*kubepods.* ]]; then
k8s_get_name "${CGROUP_PATH}" "${CGROUP}"
fi
fi
if [ -z "${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 [[ ${CGROUP} =~ system.slice_containerd.service_cpuset_[a-fA-F0-9]+[-_\.]?.*$ ]]; then
# docker containers under containerd
#shellcheck disable=SC1117
DOCKERID="$(echo "${CGROUP}" | sed "s|^.*ystem.slice_containerd.service_cpuset_\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|")"
docker_validate_id "${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 [[ ${CGROUP} =~ machine.slice_machine.*-lxc ]]; then
# libvirtd / lxc containers
# machine.slice machine-lxc/x2d969/x2dhubud0xians01.scope => lxc/hubud0xians01
# machine.slice_machine-lxc/x2d969/x2dhubud0xians01.scope/libvirt_init.scope => lxc/hubud0xians01/libvirt_init
NAME="lxc/$(echo "${CGROUP}" | sed 's/machine.slice_machine.*-lxc//; s/[\/_]x2d[[:digit:]]*//; s/[\/_]x2d//g; s/\.scope//g')"
elif [[ ${CGROUP} =~ machine.slice_machine.*-qemu ]]; then
# libvirtd / qemu virtual machines
# machine.slice_machine-qemu_x2d1_x2dopnsense.scope => qemu_opnsense
NAME="qemu_$(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 [[ ${CGROUP} =~ qemu.slice_([0-9]+).scope && -d "${NETDATA_HOST_PREFIX}/etc/pve" ]]; then
# Proxmox VMs
FILENAME="${NETDATA_HOST_PREFIX}/etc/pve/qemu-server/${BASH_REMATCH[1]}.conf"
if [[ -f $FILENAME && -r $FILENAME ]]; then
NAME="qemu_$(grep -e '^name: ' "${FILENAME}" | head -1 | sed -rn 's|\s*name\s*:\s*(.*)?$|\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 [[ ${CGROUP} =~ lxc_([0-9]+) && -d "${NETDATA_HOST_PREFIX}/etc/pve" ]]; then
# Proxmox Containers (LXC)
FILENAME="${NETDATA_HOST_PREFIX}/etc/pve/lxc/${BASH_REMATCH[1]}.conf"
if [[ -f ${FILENAME} && -r ${FILENAME} ]]; then
NAME=$(grep -e '^hostname: ' "${FILENAME}" | head -1 | sed -rn 's|\s*hostname\s*:\s*(.*)?$|\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
NAME="${NAME// /_}"
info "cgroup '${CGROUP}' is called '${NAME}', labels '${LABELS}'"
if [ -n "$LABELS" ]; then
echo "${NAME} ${LABELS}"
else
echo "${NAME}"
fi
exit ${EXIT_CODE}