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-rwxr-xr-xcollectors/cgroups.plugin/cgroup-name.sh570
1 files changed, 570 insertions, 0 deletions
diff --git a/collectors/cgroups.plugin/cgroup-name.sh b/collectors/cgroups.plugin/cgroup-name.sh
new file mode 100755
index 000000000..00d7e614c
--- /dev/null
+++ b/collectors/cgroups.plugin/cgroup-name.sh
@@ -0,0 +1,570 @@
+#!/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 "${@}"
+ exit 1
+}
+
+function docker_like_get_name_command() {
+ local command="${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 ','
+}
+
+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}_${name}"
+ return 0
+ fi
+ return 1
+}
+
+# k8s_get_kubepod_name resolves */kubepods/* cgroup name.
+# pod level cgroup name format: 'pod_<namespace>_<pod_name>'
+# container level cgroup name format: 'cntr_<namespace>_<pod_name>_<container_name>'
+function k8s_get_kubepod_name() {
+ # GKE /sys/fs/cgroup/*/ (cri=docker, cgroups=v1):
+ # |-- kubepods
+ # | |-- burstable
+ # | | |-- pod98cee708-023b-11eb-933d-42010a800193
+ # | | | |-- 922161c98e6ea450bf665226cdc64ca2aa3e889934c2cff0aec4325f8f78ac03
+ # | `-- pode314bbac-d577-11ea-a171-42010a80013b
+ # | |-- 7d505356b04507de7b710016d540b2759483ed5f9136bb01a80872b08f771930
+ #
+ # GKE /sys/fs/cgroup/*/ (cri=containerd, cgroups=v1):
+ # |-- kubepods.slice
+ # | |-- kubepods-besteffort.slice
+ # | | |-- kubepods-besteffort-pode1465238_4518_4c21_832f_fd9f87033dad.slice
+ # | | | |-- cri-containerd-66be9b2efdf4d85288c319b8c1a2f50d2439b5617e36f45d9d0d0be1381113be.scope
+ # | `-- kubepods-pod91f5b561_369f_4103_8015_66391059996a.slice
+ # | |-- cri-containerd-24c53b774a586f06abc058619b47f71d9d869ac50c92898adbd199106fd0aaeb.scope
+ #
+ # GKE /sys/fs/cgroup/*/ (cri=crio, cgroups=v1):
+ # |-- kubepods.slice
+ # | |-- kubepods-besteffort.slice
+ # | | |-- kubepods-besteffort-podad412dfe_3589_4056_965a_592356172968.slice
+ # | | | |-- crio-77b019312fd9825828b70214b2c94da69c30621af2a7ee06f8beace4bc9439e5.scope
+ #
+ # Minikube (v1.8.2) /sys/fs/cgroup/*/ (cri=docker, cgroups=v1):
+ # |-- kubepods.slice
+ # | |-- kubepods-besteffort.slice
+ # | | |-- kubepods-besteffort-pod10fb5647_c724_400c_b9cc_0e6eae3110e7.slice
+ # | | | |-- docker-36e5eb5056dfdf6dbb75c0c44a1ecf23217fe2c50d606209d8130fcbb19fb5a7.scope
+ #
+ # NOTE: cgroups plugin
+ # - uses '_' to join dir names (so it is <parent>_<child>_<child>_...)
+ # - replaces '.' with '-'
+
+ local fn="${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}': ${kube_system_ns}."
+ fi
+ fi
+
+ url="https://$host/api/v1/pods"
+ [ -n "$MY_NODE_NAME" ] && url+="?fieldSelector=spec.nodeName==$MY_NODE_NAME"
+ # FIX: check HTTP response code
+ if ! pods=$(curl --fail -sSk -H "$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=$(add_lbl_prefix "$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 "$labels" pod_name)"
+ labels=$(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')"
+ return 1
+ fi
+
+ echo "$name"
+ [ -n "$name" ]
+ return
+}
+
+function k8s_get_name() {
+ local fn="${FUNCNAME[0]}"
+ local cgroup_path="${1}"
+ local id="${2}"
+
+ NAME=$(k8s_get_kubepod_name "$cgroup_path" "$id")
+
+ case "$?" in
+ 0)
+ NAME="k8s_${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 '${NAME}'"
+ fi
+ EXIT_CODE=$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="${1}"
+ if hash docker 2> /dev/null; then
+ docker_like_get_name_command docker "${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}'"
+ 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=
+
+# -----------------------------------------------------------------------------
+
+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 [[ ${CGROUP} =~ ^.*libpod-[a-fA-F0-9]+.*$ ]]; 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 [[ ${CGROUP} =~ machine.slice_machine.*-lxc ]]; then
+ # libvirtd / lxc containers
+ # examples:
+ # before: machine.slice machine-lxc/x2d969/x2dhubud0xians01.scope
+ # after: lxc/hubud0xians01
+ # before: machine.slice_machine-lxc/x2d969/x2dhubud0xians01.scope/libvirt_init.scope
+ # after: lxc/hubud0xians01/libvirt_init
+ NAME="lxc/$(echo "${CGROUP}" | sed 's/machine.slice_machine.*-lxc//; s/\/x2d[[:digit:]]*//; s/\/x2d//g; s/\.scope//g')"
+ elif [[ ${CGROUP} =~ machine.slice_machine.*-qemu ]]; then
+ # libvirtd / qemu virtual machines
+ # NAME="$(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 ${EXIT_CODE}