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Diffstat (limited to 'collectors/cgroups.plugin/cgroup-name.sh')
| -rw-r--r-- | collectors/cgroups.plugin/cgroup-name.sh | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/collectors/cgroups.plugin/cgroup-name.sh b/collectors/cgroups.plugin/cgroup-name.sh new file mode 100644 index 000000000..6bf8b8b03 --- /dev/null +++ b/collectors/cgroups.plugin/cgroup-name.sh @@ -0,0 +1,196 @@ +#!/usr/bin/env bash + +# netdata +# real-time performance and health monitoring, done right! +# (C) 2016 Costa Tsaousis <costa@tsaousis.gr> +# SPDX-License-Identifier: GPL-3.0-or-later +# +# Script to find a better name for cgroups +# + +export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin" +export LC_ALL=C + +# ----------------------------------------------------------------------------- + +PROGRAM_NAME="$(basename "${0}")" + +logdate() { + date "+%Y-%m-%d %H:%M:%S" +} + +log() { + local status="${1}" + shift + + echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}" + +} + +warning() { + log WARNING "${@}" +} + +error() { + log ERROR "${@}" +} + +info() { + log INFO "${@}" +} + +fatal() { + log FATAL "${@}" + exit 1 +} + +debug=0 +debug() { + [ $debug -eq 1 ] && log DEBUG "${@}" +} + +# ----------------------------------------------------------------------------- + +[ -z "${NETDATA_USER_CONFIG_DIR}" ] && NETDATA_USER_CONFIG_DIR="/usr/local/etc/netdata" +[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/local/lib/netdata/conf.d" + +DOCKER_HOST="${DOCKER_HOST:=/var/run/docker.sock}" +CGROUP="${1}" +NAME= + +# ----------------------------------------------------------------------------- + +if [ -z "${CGROUP}" ] + then + fatal "called without a cgroup name. Nothing to do." +fi + +for CONFIG in "${NETDATA_USER_CONFIG_DIR}/cgroups-names.conf" "${NETDATA_STOCK_CONFIG_DIR}/cgroups-names.conf" +do + if [ -f "${CONFIG}" ] + then + NAME="$(grep "^${CGROUP} " "${CONFIG}" | sed "s/[[:space:]]\+/ /g" | cut -d ' ' -f 2)" + if [ -z "${NAME}" ] + then + info "cannot find cgroup '${CGROUP}' in '${CONFIG}'." + else + break + fi + #else + # info "configuration file '${CONFIG}' is not available." + fi +done + +function docker_get_name_classic { + local id="${1}" + info "Running command: docker ps --filter=id=\"${id}\" --format=\"{{.Names}}\"" + NAME="$( docker ps --filter=id="${id}" --format="{{.Names}}" )" + return 0 +} + +function docker_get_name_api { + local id="${1}" + if [ ! -S "${DOCKER_HOST}" ] + then + warning "Can't find ${DOCKER_HOST}" + return 1 + fi + info "Running API command: /containers/${id}/json" + JSON=$(echo -e "GET /containers/${id}/json HTTP/1.0\r\n" | nc -U ${DOCKER_HOST} | grep '^{.*') + NAME=$(echo $JSON | jq -r .Name,.Config.Hostname | grep -v null | head -n1 | sed 's|^/||') + return 0 +} + +function docker_get_name { + local id="${1}" + if hash docker 2>/dev/null + then + docker_get_name_classic "${id}" + else + docker_get_name_api "${id}" || docker_get_name_classic "${id}" + fi + if [ -z "${NAME}" ] + then + warning "cannot find the name of docker container '${id}'" + NAME="${id:0:12}" + else + info "docker container '${id}' is named '${NAME}'" + fi +} + +if [ -z "${NAME}" ] + then + if [[ "${CGROUP}" =~ ^.*docker[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]] + then + # docker containers + + DOCKERID="$( echo "${CGROUP}" | sed "s|^.*docker[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|" )" + # echo "DOCKERID=${DOCKERID}" + + if [ ! -z "${DOCKERID}" -a \( ${#DOCKERID} -eq 64 -o ${#DOCKERID} -eq 12 \) ] + then + docker_get_name "${DOCKERID}" + else + error "a docker id cannot be extracted from docker cgroup '${CGROUP}'." + fi + elif [[ "${CGROUP}" =~ ^.*kubepods[_/].*[_/]pod[a-fA-F0-9-]+[_/][a-fA-F0-9]+$ ]] + then + # kubernetes + + DOCKERID="$( echo "${CGROUP}" | sed "s|^.*kubepods[_/].*[_/]pod[a-fA-F0-9-]\+[_/]\([a-fA-F0-9]\+\)$|\1|" )" + # echo "DOCKERID=${DOCKERID}" + + if [ ! -z "${DOCKERID}" -a \( ${#DOCKERID} -eq 64 -o ${#DOCKERID} -eq 12 \) ] + then + docker_get_name "${DOCKERID}" + else + error "a docker id cannot be extracted from kubernetes cgroup '${CGROUP}'." + fi + elif [[ "${CGROUP}" =~ machine.slice[_/].*\.service ]] + then + # systemd-nspawn + + NAME="$(echo ${CGROUP} | sed 's/.*machine.slice[_\/]\(.*\)\.service/\1/g')" + + elif [[ "${CGROUP}" =~ machine.slice_machine.*-qemu ]] + then + # libvirtd / qemu virtual machines + + # NAME="$(echo ${CGROUP} | sed 's/machine.slice_machine.*-qemu//; s/\/x2d//; s/\/x2d/\-/g; s/\.scope//g')" + NAME="qemu_$(echo ${CGROUP} | sed 's/machine.slice_machine.*-qemu//; s/\/x2d[[:digit:]]*//; s/\/x2d//g; s/\.scope//g')" + + elif [[ "${CGROUP}" =~ machine_.*\.libvirt-qemu ]] + then + # libvirtd / qemu virtual machines + NAME="qemu_$(echo ${CGROUP} | sed 's/^machine_//; s/\.libvirt-qemu$//; s/-/_/;')" + + elif [[ "${CGROUP}" =~ qemu.slice_([0-9]+).scope && -d /etc/pve ]] + then + # Proxmox VMs + + FILENAME="/etc/pve/qemu-server/${BASH_REMATCH[1]}.conf" + if [[ -f $FILENAME && -r $FILENAME ]] + then + NAME="qemu_$(grep -e '^name: ' "/etc/pve/qemu-server/${BASH_REMATCH[1]}.conf" | head -1 | sed -rn 's|\s*name\s*:\s*(.*)?$|\1|p')" + else + error "proxmox config file missing ${FILENAME} or netdata does not have read access. Please ensure netdata is a member of www-data group." + fi + elif [[ "${CGROUP}" =~ lxc_([0-9]+) && -d /etc/pve ]] + then + # Proxmox Containers (LXC) + + FILENAME="/etc/pve/lxc/${BASH_REMATCH[1]}.conf" + if [[ -f ${FILENAME} && -r ${FILENAME} ]] + then + NAME=$(grep -e '^hostname: ' /etc/pve/lxc/${BASH_REMATCH[1]}.conf | head -1 | sed -rn 's|\s*hostname\s*:\s*(.*)?$|\1|p') + else + error "proxmox config file missing ${FILENAME} or netdata does not have read access. Please ensure netdata is a member of www-data group." + fi + fi + + [ -z "${NAME}" ] && NAME="${CGROUP}" + [ ${#NAME} -gt 100 ] && NAME="${NAME:0:100}" +fi + +info "cgroup '${CGROUP}' is called '${NAME}'" +echo "${NAME}" |