Icinga/Nagios Moniroting plugin for gearman

check_gearman_workers.sh

#!/bin/bash
# example: ./check_gearman_workers.sh gearman-1 some:task 13 10

HOST=$1
JOB=$2
WARN=$3
CRIT=$4

WORKERS_LEFT=$((echo status ; sleep 0.1) | netcat $HOST 4730 -q1 | grep $JOB | awk '{ print $4-$3-$2}')

case $((
  ($WORKERS_LEFT > $WARN)   * 1 +
  ($WORKERS_LEFT <= $WARN && $WORKERS_LEFT > $CRIT)  * 2 +
  ($WORKERS_LEFT <= $CRIT) * 3)) in
  (1) STATUS="OK"; EXITCODE=0;;
  (2) STATUS="WARNING"; EXITCODE=1;;
  (3) STATUS="CRITICAL"; EXITCODE=2;;
  (0) STATUS="UKNOWN"; EXITCODE=3;;
esac

echo "$STATUS - $WORKERS_LEFT workers available in \"$JOB\""
exit $EXITCODE