pfSense NRPE Multiple Gateway RTT Check

check_pfsense_rtt.sh

#!/bin/sh

# check_pfsense_rtt2.1.4 Version 0.2
# Based on Copyright 2012, Justin Edmands, [email protected]
# Modified 2014, Yehuda Katz, [email protected]
# Info available from http://justinedmands.com/?q=nagios_check_pfsense_rtt
# License for use:  http://www.opensource.org/licenses/bsd-license.php 
# place this file in your pfsense nagios plugin directory. As of pfsense 2.0.2, this is /usr/local/libexec/nagios. Make the plugin executable with chmod 755.
# In later pfSense versions, this is /usr/pbi/nrpe-*/libexec/nagios/
# This is compatible with pfsense 2.1.4

stateid=-1

while read p; do
   real_rtt=`echo $p | cut -f7 -d '|' | sed s/ms//`
   rtt=`echo $p | cut -f7 -d '|' | sed s/....ms//`
   isp=`echo $p | cut -f3 -d '|'`
   ispIP=`echo $p | cut -f1 -d '|'`
   
   if  [ $rtt -lt 50 ]
   then
      echo "Normal - $isp RTT OK for $ispIP : $real_rtt ms"
      if [ $stateid -lt 0 ]
      then
         stateid=0
      fi
   elif [ $rtt -gt 50 ] && [ $rtt -lt 100 ]
   then
      echo "Warning - $isp RTT Increasing for $ispIP : $real_rtt ms"
      if [ $stateid -lt 1 ]
      then
         stateid=1
      fi
   elif [ $rtt -gt 100 ]
   then
      echo "Alert - $isp  RTT Critical for $ispIP : $real_rtt ms"
      if [ $stateid -lt 2 ]
      then
         stateid=2
      fi
   fi
done < /var/run/apinger.status
exit $stateid