check_imapds.sh

#!/bin/bash
#
# Copyright 2009-2017 Martin Scharm
#
# This file is part of bf-monitoring.
# <https://binfalse.de/software/nagios/>
# <https://github.com/binfalse/monitoring>
#
# bf-monitoring 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.
#
# bf-monitoring 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
# bf-monitoring If not, see <http://www.gnu.org/licenses/>.
#
###################################
#
#     check the number of running
#     imapd's, we had some trouble
#     with them, few days ago
#
#     written by Martin Scharm
#       see http://binfalse.de
#
###################################

REVISION=0.1
PROGNAME=`/usr/bin/basename $0`
PROGPATH=`echo $0 | /bin/sed -e 's,[\\/][^\\/][^\\/]*$,,'`

CONFIGFILE="/etc/courier/imapd-ssl"

source /usr/lib/nagios/plugins/utils.sh

usage ()
{
    echo "\
Nagios plugin to check the number of imap deamons

Usage:
  $PROGNAME --help
  $PROGNAME --version
"
}

help ()
{
	print_revision $PROGNAME $REVISION
	echo; usage; echo; support
}

while [ -n "$1" ]; do
    case "$1" in
	--help | -h)
	    help
	    exit $STATE_OK;;
	--version | -V)
	    print_revision $PROGNAME $REVISION
	    exit $STATE_OK;;
	*)
	    usage; exit $STATE_UNKNOWN;;
    esac
    shift
done

max=(`grep MAXDEAMONS $CONFIGFILE`)
IFS="="
max=(${max[0]})
max=${max[1]}

ist=`ps -ef | grep imapd | wc -l`

if [ $ist -gt $max ]; then
	echo "ERROR: "$ist" imapd laufen, max ist "$max"!"
	exit $STATE_CRITICAL
fi


if [ `expr $ist + 5` -gt $max ]; then
        echo "WARN: "$ist" imapd laufen, max ist "$max"!"
        exit $STATE_WARNING
fi


echo "OK! "$ist" imapd laufen, max ist "$max
exit $STATE_OK