check_jmx_heap.sh

#!/bin/bash
######################################################################
#                                                                    #
#       check_jmx_heap.sh                                            #
#       Executes a check_jmx memory check on a host and formats      #
#       results to pass back to nagios as perf data.                 #
#                                                                    #
#       MW 11/09/2013                                                #
#                                                                    #
######################################################################

FILE=${@: -1} #gets last arg

HELP="Usage: check_jmx_heap.sh -H -p  -w  -c
     -H target hostname
     -p port on which host's JMX process is listening
     -w warning threshold value
     -c critical threshold value
     -? prints this message"

#Check args
if [ $# = 0 ]
then
        echo "$HELP"
        exit
else
        while getopts ":H:p:w:c:\?" opt; do
        case $opt in
                H)
                        HOST=$OPTARG
                        ;;
                p)
                        PORT=$OPTARG
                        ;;
                w)
                        WARN=$OPTARG
                        ;;
                c)
                        CRIT=$OPTARG
                        ;;
                :)
                        echo "Option -$OPTARG requires an argument." >&2
                        exit
                        ;;
                \?)
                        echo "$HELP"
                        exit 1
                        ;;
        esac
        done
fi

OUTPUT=$(/usr/local/nagios/libexec/check_jmx -U "service:jmx:rmi:///jndi/rmi://$HOST:$PORT/jmxrmi" -O java.lang:type=Memory -A HeapMemoryUsage -K used -I HeapMemoryUsage -J used -vvvv -w $WARN -c $CRIT)
EXIT_STATUS=$?
RAWSIZE=`echo $OUTPUT | sed "s/[^0-9]*\([0-9]\+\).*/\1/"`
STATUS=`echo $OUTPUT | sed -E 's/(([^ ]+ ){2}).*/\2/'`
MEMSIZE=`echo $RAWSIZE | awk '{ sum=$1 ; hum[1024**3]="GB";hum[1024**2]="MB";hum[1024]="KB"; for (x=1024**3; x>=1024; x/=1024){ if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x];break } }}'`
VALUE=$(echo $OUTPUT | sed 's/.*{\(.*\)}.*/\1;/' | sed 's/;/; /g')
#echo "JVM Heap $STATUS | $VALUE"
echo "JVM Heap $STATUS- $MEMSIZE | $VALUE"
exit $EXIT_STATUS