151 lines
3.6 KiB
Bash
Executable file
151 lines
3.6 KiB
Bash
Executable file
#!/bin/bash
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# This Nagios script was written against version 3.3 & 3.4 of Gluster. Older
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# versions will most likely not work at all with this monitoring script.
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#
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# Gluster currently requires elevated permissions to do anything. In order to
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# accommodate this, you need to allow your Nagios user some additional
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# permissions via sudo. The line you want to add will look something like the
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# following in /etc/sudoers (or something equivalent):
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#
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# Defaults:nagios !requiretty
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# nagios ALL=(root) NOPASSWD:/usr/sbin/gluster volume status [[\:graph\:]]* detail,/usr/sbin/gluster volume heal [[\:graph\:]]* info
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#
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# That should give us all the access we need to check the status of any
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# currently defined peers and volumes.
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# Inspired by a script of Mark Nipper
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#
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# 2013, Mark Ruys, mark.ruys@peercode.nl
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PATH=/sbin:/bin:/usr/sbin:/usr/bin
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PROGNAME=$(basename -- $0)
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PROGPATH=`echo $0 | sed -e 's,[\\/][^\\/][^\\/]*$,,'`
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REVISION="1.0.0"
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. /usr/lib/nagios/plugins/utils.sh
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# parse command line
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usage () {
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echo ""
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echo "USAGE: "
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echo " $PROGNAME -v VOLUME -n BRICKS [-w GB -c GB]"
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echo " -n BRICKS: number of bricks"
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echo " -w and -c values in GB"
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exit $STATE_UNKNOWN
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}
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while getopts "v:n:w:c:" opt; do
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case $opt in
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v) VOLUME=${OPTARG} ;;
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n) BRICKS=${OPTARG} ;;
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w) WARN=${OPTARG} ;;
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c) CRIT=${OPTARG} ;;
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*) usage ;;
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esac
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done
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if [ -z "${VOLUME}" -o -z "${BRICKS}" ]; then
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usage
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fi
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Exit () {
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echo "$1: ${2:0}"
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status=STATE_$1
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exit ${!status}
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}
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# check for commands
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for cmd in basename bc awk sudo pidof gluster; do
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if ! type -p "$cmd" >/dev/null; then
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Exit UNKNOWN "$cmd not found"
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fi
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done
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# check for glusterd (management daemon)
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if ! pidof glusterd &>/dev/null; then
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Exit CRITICAL "glusterd management daemon not running"
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fi
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# check for glusterfsd (brick daemon)
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if ! pidof glusterfsd &>/dev/null; then
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Exit CRITICAL "glusterfsd brick daemon not running"
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fi
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# get volume heal status
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heal=0
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for entries in $(sudo gluster volume heal ${VOLUME} info | awk '/^Number of entries: /{print $4}'); do
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if [ "$entries" -gt 0 ]; then
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let $((heal+=entries))
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fi
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done
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if [ "$heal" -gt 0 ]; then
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errors=("${errors[@]}" "$heal unsynched entries")
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fi
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# get volume status
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bricksfound=0
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freegb=9999999
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shopt -s nullglob
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while read -r line; do
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field=($(echo $line))
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case ${field[0]} in
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Brick)
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brick=${field[@]:2}
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;;
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Disk)
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key=${field[@]:0:3}
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if [ "${key}" = "Disk Space Free" ]; then
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freeunit=${field[@]:4}
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free=${freeunit:0:-2}
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unit=${freeunit#$free}
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if [ "$unit" != "GB" ]; then
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Exit UNKNOWN "unknown disk space size $freeunit"
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fi
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free=$(echo "${free} / 1" | bc -q)
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if [ $free -lt $freegb ]; then
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freegb=$free
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fi
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fi
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;;
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Online)
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online=${field[@]:2}
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if [ "${online}" = "Y" ]; then
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let $((bricksfound++))
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else
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errors=("${errors[@]}" "$brick offline")
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fi
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;;
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esac
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done < <(sudo gluster volume status ${VOLUME} detail)
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if [ $bricksfound -eq 0 ]; then
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Exit CRITICAL "no bricks found"
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elif [ $bricksfound -lt $BRICKS ]; then
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errors=("${errors[@]}" "found $bricksfound bricks, expected $BRICKS ")
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fi
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if [ -n "$CRIT" -a -n "$WARN" ]; then
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if [ $CRIT -ge $WARN ]; then
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Exit UNKNOWN "critical threshold below warning"
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elif [ $freegb -lt $CRIT ]; then
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Exit CRITICAL "free space ${freegb}GB"
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elif [ $freegb -lt $WARN ]; then
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errors=("${errors[@]}" "free space ${freegb}GB")
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fi
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fi
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# exit with warning if errors
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if [ -n "$errors" ]; then
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sep='; '
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msg=$(printf "${sep}%s" "${errors[@]}")
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msg=${msg:${#sep}}
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Exit WARNING "${msg}"
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fi
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# exit with no errors
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Exit OK "${bricksfound} bricks; free space ${freegb}GB"
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