Munin contributed plugins

#!/bin/sh

#

# Script to monitor CPU usage of Xen domains

#

# Author: unknown

# Modifications: Matthias Pfafferodt, syntron@web.de, Roland Mohrbacher

# License: GPL v. 2

#

# Parameters understood:

#

#     conifg    (required)

#     autoconf  (optional - used by munin-config)

#

#%# family=auto

#%# capabilities=autoconf

# statefile: name of seen xen domains

statefile="/var/lib/munin/plugin-state/munin-plugin-xen.state"

if [ "$1" = "autoconf" ]; then

        if which xm > /dev/null ; then

                echo yes

                exit 0

        fi

        echo "no (xm not found)"

        exit 1

fi

if [ "$1" = "config" ]; then

	if [ ! -e $statefile ]; then

		touch $statefile

	fi

        echo 'graph_title Xen Domain Utilerisation'

        echo 'graph_args --base 1000 -l 0 --upper-limit 100 --rigid'

        echo 'graph_scale no'

        echo 'graph_vlabel %'

        echo 'graph_category xen'

        echo 'graph_info This graph shows how many % of the CPU time where used by a domain'

	xm list | grep -v "^Name .* Time(s)$" | \

        while read name domid mem cpu state time console; do

                name=`echo $name | sed -e"s/[-.]/_/g"`

		TEST=`less $statefile | grep "^${name}$" | wc -l`

		if [ $TEST -ne 1 ]; then

		    echo "$name" >> $statefile

		fi

	done

	FIRST=1

	cat $statefile | sort | \

        while read name; do

                echo "$name.label $name"

                echo "$name.type COUNTER"

		if [ $FIRST -eq 1 ]; then

            	    echo "$name.draw AREA"

		    FIRST=0

		else

            	    echo "$name.draw STACK"

		fi

                echo "$name.min 0"

                echo "$name.max 100"

                echo "$name.info % of the CPU time spend for $name"

        done

        exit 0

fi

xm list | grep -v "^Name .* Time(s)$" | \

while read name domid mem cpu state time console; do

        name=`echo $name | sed -e "s/[-.]/_/g"`

	# only seconds

        time=`echo $time | sed -e "s/\..//"`

	# scale 60s/60s => 100%/60s

	time=`echo "$time*100/60" | bc`

        echo "$name.value $time"

done