Nagios passive check

passive_smtp.sh

#!/bin/bash

## Example passive service check for smtp

SVC_RES=`/usr/lib/nagios/plugins/check_smtp -H localhost -t 5`
NOW=`date +%s`
CMD_FILE='/var/run/nagios3/rw/nagios.cmd'
NAGIOS_HOST='your.nagios.host'
HOST=`hostname -f`

case $SVC_RES in
  0) `ssh $NAGIOS_HOST 'printf "[%lu] PROCESS_SERVICE_CHECK_RESULT;$HOST;SMPT;0;OK- Everything Looks Great\n" $now > $commandfile'`
  1) `ssh $NAGIOS_HOST 'printf "[%lu] PROCESS_SERVICE_CHECK_RESULT;$HOST;SMPT;1;WARNING- Something Amis\n" $now > $commandfile'`
  2) `ssh $NAGIOS_HOST 'printf "[%lu] PROCESS_SERVICE_CHECK_RESULT;$HOST;SMPT;2;CRITICAL- Service not running\n" $now > $commandfile'`
  *) `ssh $NAGIOS_HOST 'printf "[%lu] PROCESS_SERVICE_CHECK_RESULT;$HOST;SMPT;3;UNKNOWN- There was a problem with the command\n" $now > $commandfile'`
esac