Nagios Support Forum

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# ps -ef | grep nagios.cfg
nagios    6687     1  4 10:10 ?        00:08:48 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios    6757  6687  0 10:10 ?        00:00:05 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios   15447     1  6 Nov02 ?        03:23:00 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios   15516 15447  0 Nov02 ?        00:01:44 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

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Info: (host check orphaned, is the mod-gearman worker on queue hostgroup_XXX running?)

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	stop)
		echo -n "Stopping nagios:"

		pid_nagios
		killproc_nagios TERM

		# now we have to wait for nagios to exit and remove its
		# own NagiosRunFile, otherwise a following "start" could
		# happen, and then the exiting nagios will remove the
		# new NagiosRunFile, allowing multiple nagios daemons
		# to (sooner or later) run - John Sellens
		#echo -n 'Waiting for nagios to exit .'
		for i in {1..91} ; do
			if status_nagios > /dev/null; then
				echo -n '.'
				sleep 1
			else
				break
			fi
		done
		if status_nagios > /dev/null; then
			echo ''
			echo 'Warning - nagios did not exit in a timely manner - killing forcefully'
			killproc_nagios KILL
		else
			echo ' done.'
		fi

		rm -f $NagiosStatusFile $NagiosRunFile $NagiosLockDir/$NagiosLockFile $NagiosCommandFile
		;;

Code: Select all

#!/bin/bash

# Script name:eck_nagios_instances.sh
# Version: v0.6.2
# Author: Willem D'Haese, Michiel Detailleur
# Created on: 02/06/2015
# Purpose: Bash nagios plugin to alert if multiple instances of nagios are running in order to prevent orphaned checks
# Recent history:
#       02/06/2015 => Creation date
# Copyright:
#       This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published
#       by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed
#       in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
#       PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public
#       License along with this program.  If not, see <http://www.gnu.org/licenses/>.

NumNagiosProc=`/usr/bin/pgrep -P 1 nagios | wc -l`

if (( $NumNagiosProc < 1)) ;then
        echo "No Nagios processes found.."
        exit 2
elif (( $NumNagiosProc > 1 )) ;then
        echo "$NumNagiosProc Nagios processes found. Please execute 'killall -9 nagios && service nagios restart'"
        exit 2
else
        echo "OK: One Nagios process found."
fi