pfsense-nagios-checks/check_pf_cpu_temp

#!/bin/sh
#
# Dallas Haselhorst 9May2018
#

if [ "$1" = "-w" ] && [ "$2" -gt "0" ] && [ "$3" = "-c" ] && [ "$4" -gt "0" ] ; then
        warn=$2
        crit=$4

        CPUTEMP=$(/sbin/sysctl -a | grep "^dev.*0.temperature" | awk '{print $2}' | cut -d'C' -f1)||exit 3

        if [ -z $CPUTEMP ];then
                echo "*** CPU temperature not returned. It might not be supported on this system. ***"
                echo "*** Try sysctl -a | grep temperature to see if the formatting is off. ***"
                exit 0
        fi


        if [ $CPUTEMP -ge $warn ];then
                if [ $CPUTEMP -ge $crit ]; then
                echo "CRITICAL - CPU temperature - $CPUTEMP (C)|TEMP=$CPUTEMP;;;;"
                exit 2
                else
                echo "WARNING - CPU temperature = $CPUTEMP (C)|TEMP=$CPUTEMP;;;;"
                exit 1
                fi
        else
                echo "OK - CPU temperature = $CPUTEMP (C)|TEMP=$CPUTEMP;;;;"
                exit 0
        fi

else
        echo "check_pf_cpu_temp - Nagios Plugin for checking CPU temp on pfSense"
        echo "*** Only returns value of 1st CPU core if there are multiple ***  "
        echo ""
        echo "Usage:    check_pf_cpu_temp -w <warnlevel> -c <critlevel>"
        exit 3
fi