4 # real-time performance and health monitoring, done right!
5 # (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
8 # Script to find a better name for cgroups
11 export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
14 # -----------------------------------------------------------------------------
16 PROGRAM_NAME="$(basename "${0}")"
19 date "+%Y-%m-%d %H:%M:%S"
26 echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
49 [ $debug -eq 1 ] && log DEBUG "${@}"
52 # -----------------------------------------------------------------------------
54 NETDATA_CONFIG_DIR="${NETDATA_CONFIG_DIR-/etc/netdata}"
55 CONFIG="${NETDATA_CONFIG_DIR}/cgroups-names.conf"
59 # -----------------------------------------------------------------------------
63 fatal "called without a cgroup name. Nothing to do."
68 NAME="$(grep "^${CGROUP} " "${CONFIG}" | sed "s/[[:space:]]\+/ /g" | cut -d ' ' -f 2)"
71 info "cannot find cgroup '${CGROUP}' in '${CONFIG}'."
74 # info "configuration file '${CONFIG}' is not available."
77 function get_name_classic {
79 info "Running command: docker ps --filter=id=\"${DOCKERID}\" --format=\"{{.Names}}\""
80 NAME="$( docker ps --filter=id="${DOCKERID}" --format="{{.Names}}" )"
84 function get_name_api {
86 if [ ! -S "/var/run/docker.sock" ]
88 warning "Can't find /var/run/docker.sock"
91 info "Running API command: /containers/${DOCKERID}/json"
92 JSON=$(echo -e "GET /containers/${DOCKERID}/json HTTP/1.0\r\n" | nc -U /var/run/docker.sock | egrep '^{.*')
93 NAME=$(echo $JSON | jq -r .Name,.Config.Hostname | grep -v null | head -n1 | sed 's|^/||')
99 if [[ "${CGROUP}" =~ ^.*docker[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]
101 DOCKERID="$( echo "${CGROUP}" | sed "s|^.*docker[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|" )"
102 # echo "DOCKERID=${DOCKERID}"
104 if [ ! -z "${DOCKERID}" -a \( ${#DOCKERID} -eq 64 -o ${#DOCKERID} -eq 12 \) ]
106 if hash docker 2>/dev/null
108 get_name_classic $DOCKERID
110 get_name_api $DOCKERID || get_name_classic $DOCKERID
114 warning "cannot find the name of docker container '${DOCKERID}'"
115 NAME="${DOCKERID:0:12}"
117 info "docker container '${DOCKERID}' is named '${NAME}'"
122 [ -z "${NAME}" ] && NAME="${CGROUP}"
123 [ ${#NAME} -gt 100 ] && NAME="${NAME:0:100}"
126 info "cgroup '${CGROUP}' is called '${NAME}'"