Nagios Check Raspberry Pi Temperature

check_rasp_temp

/usr/lib/nagios/plugins/check_rasp_temp
---------------------------------------------------------
#!/bin/bash
# Adapted from check_nagios_latency

VCGENCMD="/opt/vc/bin/vcgencmd"

# Prints usage information
usage() {

        if [ -n "$1" ] ; then
                echo "Error: $1" 1>&2
        fi

        echo ""
        echo "Usage: check_rasp_temp [-h?] -w warning -c critical"
        echo ""
        echo "   -w         warning threshold"
        echo "   -c         critical threshold"
        echo "   -h, -?     this help message"
        echo ""

        exit 3
}

# Checks if a given program is available and executable
check_prog() {
        if [ -z "$PROG" ] ; then
                PROG=`which $1`
        fi
        if [ -z "$PROG" ] ; then
                echo "TEMPERATURE UNKNOWN - cannot find $1"
                exit 3
        fi
        PROG=""
}

# Main - check progs
check_prog awk
check_prog bc
# process command line options
while getopts "h?c:w:" opt; do
        case $opt in
                c )      CRITICAL=$OPTARG;  ;;
                h | \? ) usage ; exit 3;    ;;
                w )      WARNING=$OPTARG;   ;;
        esac
done
shift $(($OPTIND - 1))
# Check options
if [ -z "${WARNING}" ] ; then
        usage "No warning threshold specified"
fi
if [ -z "${CRITICAL}" ] ; then
        usage "No critical threshold specified"
fi
# Check number formats
if ! echo $WARNING | grep -qE '^[0-9]+(\.[0-9]+)?$' ; then
        echo "TEMPERATURE UNKOWN - Wrong number: $WARNING"
        exit 3
fi
if ! echo $CRITICAL | grep -qE '^[0-9]+(\.[0-9]+)?$' ; then
        echo "TEMPERATURE UNKOWN - Wrong number: $CRITICAL"
        exit 3
fi
# Perform the checks
tm=`/opt/vc/bin/vcgencmd measure_temp`
tc=`echo $tm| cut -d '=' -f2 | sed 's/..$//'`
TEMP=$(echo "scale=2;((9/5) * $tc) + 32" |bc)
PERF="temp=${TEMP};${WARNING};${CRITICAL};;"
COMPARISON=`echo "if($TEMP>=$CRITICAL) 1 else 0;" | bc`
if [ $COMPARISON -eq 1 ] ; then
        echo "TEMPERATURE CRITICAL: $TEMP | $PERF"
        exit 2
fi
COMPARISON=`echo "if($TEMP>=$WARNING) 1 else 0;" | bc`
if [ $COMPARISON -eq 1 ] ; then
        echo "TEMPERATURE WARNING: $TEMP | $PERF"
        exit 1
fi
echo "TEMPERATURE OK: $TEMP | $PERF"
exit 0;
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/etc/nagios/nrpe.cfg | egrep -v '#|^$'
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command[check_users]=/usr/lib/nagios/plugins/check_users -w 3 -c 4
command[check_load]=/usr/lib/nagios/plugins/check_load -r -w 1.95,1.90,1.80 -c 2.10,2.00,1.90
command[check_hda1]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p /
command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10 -s Z
command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 250 -c 300
command[check_apt]=/usr/lib/nagios/plugins/check_apt
command[check_ntp]=/usr/lib/nagios/plugins/check_ntp_time -H 1.1.1.1 -w 2 -c 5
command[checknfs]=sudo -u root /usr/lib/nagios/plugins/check_nfs.sh
command[check_hw]=sudo -u root /usr/lib/nagios/plugins/check_hw
command[check_os]=sudo -u root /usr/lib/nagios/plugins/check_os
command[check_rasp_temp]=sudo -u root /usr/lib/nagios/plugins/check_rasp_temp -w 145 -c 165
command[check_throttled]=sudo -u root /usr/lib/nagios/plugins/check_throttled
command[check_v]=sudo -u root /usr/lib/nagios/plugins/check_voltage