plugins.d/cgroup-name.sh

   1 #!/bin/bash
   2
   3 export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
   4
   5 NETDATA_CONFIG_DIR="${NETDATA_CONFIG_DIR-/etc/netdata}"
   6 CONFIG="${NETDATA_CONFIG_DIR}/cgroups-names.conf"
   7 CGROUP="${1}"
   8 NAME=
   9
  10 if [ -z "${CGROUP}" ]
  11         then
  12         echo >&2 "${0}: called without a cgroup name. Nothing to do."
  13         exit 1
  14 fi
  15
  16 if [ -f "${CONFIG}" ]
  17         then
  18         NAME="$(cat "${CONFIG}" | grep "^${CGROUP} " | sed "s/[[:space:]]\+/ /g" | cut -d ' ' -f 2)"
  19         if [ -z "${NAME}" ]
  20                 then
  21                 echo >&2 "${0}: cannot find cgroup '${CGROUP}' in '${CONFIG}'."
  22         fi
  23 else
  24         echo >&2 "${0}: configuration file '${CONFIG}' is not available."
  25 fi
  26
  27 if [ -z "${NAME}" -a "${CGROUP:0:7}" = "docker/" ]
  28         then
  29         NAME="$(docker ps --filter=id="${CGROUP:7:64}" --format="{{.Names}}")"
  30         [ -z "${NAME}" ] && NAME="${CGROUP:0:19}"
  31         [ ${#NAME} -gt 20 ] && NAME="${NAME:0:20}"
  32 fi
  33
  34 if [ -z "${NAME}" ]
  35         then
  36         if [ ${#CGROUP} -gt 20 ]
  37                 then
  38                 NAME="${CGROUP:0:20}"
  39         else
  40                 NAME="${CGROUP}"
  41         fi
  42 fi
  43
  44 echo >&2 "${0}: cgroup '${CGROUP}' is named as '${NAME}'"
  45 echo "${NAME}"