plugins.d/cgroup-name.sh

   1 #!/bin/bash
   2
   3 export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
   4 export LC_ALL=C
   5
   6 NETDATA_CONFIG_DIR="${NETDATA_CONFIG_DIR-/etc/netdata}"
   7 CONFIG="${NETDATA_CONFIG_DIR}/cgroups-names.conf"
   8 CGROUP="${1}"
   9 NAME=
  10
  11 if [ -z "${CGROUP}" ]
  12         then
  13         echo >&2 "${0}: called without a cgroup name. Nothing to do."
  14         exit 1
  15 fi
  16
  17 if [ -f "${CONFIG}" ]
  18         then
  19         NAME="$(cat "${CONFIG}" | grep "^${CGROUP} " | sed "s/[[:space:]]\+/ /g" | cut -d ' ' -f 2)"
  20         if [ -z "${NAME}" ]
  21                 then
  22                 echo >&2 "${0}: cannot find cgroup '${CGROUP}' in '${CONFIG}'."
  23         fi
  24 #else
  25 #       echo >&2 "${0}: configuration file '${CONFIG}' is not available."
  26 fi
  27
  28 if [ -z "${NAME}" ]
  29         then
  30         if [[ "${CGROUP}" =~ ^.*docker[-/\.][a-fA-F0-9]+[-\.]?.*$ ]]
  31                 then
  32                 DOCKERID="$( echo "${CGROUP}" | sed "s|^.*docker[-/]\([a-fA-F0-9]\+\)[-\.]\?.*$|\1|" )"
  33
  34                 if [ ! -z "${DOCKERID}" -a \( ${#DOCKERID} -eq 64 -o ${#DOCKERID} -eq 12 \) ]
  35                         then
  36                         echo >&2 "Running command: docker ps --filter=id=\"${DOCKERID}\" --format=\"{{.Names}}\""
  37                         NAME="$( docker ps --filter=id="${DOCKERID}" --format="{{.Names}}" )"
  38                         if [ -z "${NAME}" ]
  39                                 then
  40                                 echo >&2 "Cannot find the name of docker container '${DOCKERID}'"
  41                                 NAME="${DOCKERID:0:12}"
  42                         else
  43                                 echo >&2 "Docker container '${DOCKERID}' is named '${NAME}'"
  44                         fi
  45                 fi
  46         fi
  47
  48         [ -z "${NAME}" ] && NAME="${CGROUP}"
  49         [ ${#NAME} -gt 50 ] && NAME="${NAME:0:50}"
  50 fi
  51
  52 echo >&2 "${0}: cgroup '${CGROUP}' is called '${NAME}'"
  53 echo "${NAME}"