Munin contributed plugins

#!/bin/bash

GREP="/bin/grep"

SED="/bin/sed"

TAIL="/usr/bin/tail"

SSH="/usr/bin/ssh"

BASENAME="/usr/bin/basename"

# script name must be like  esx_cpu_machine.domain  or  esx_mem_machine.domain

temp="$(basename $0 | $SED 's/^esx_//g')"

which_info="${temp%%_*}"

HOST="${temp##*_}"

case "$which_info" in

	"cpu" | "mem" | "hmem" | "gmem" ) ;;

	* ) echo "Script name incorrect, should be  esx_xxx_hostname   where xxx in {cpu,mem,hmem,gmem}"

		exit 1;;

esac

# ---------------

function get_infos () {

	summary="$($SSH "$HOST" \

	       	vim-cmd hostsvc/hostsummary \; \

		vim-cmd vmsvc/getallvms)"

}

function get_vmlist () {

	total_linenumber="$(echo "$summary" | wc -l)"

	vmlist_linenumber="$(echo "$summary" | $GREP -n "^Vmid")"

	vmlist_linenumber="${vmlist_linenumber/:*/}"

	vmlist="$(echo "$summary" | $TAIL -n $(($total_linenumber - $vmlist_linenumber)) | tr -s " ")"

}

function overallCpuUsage () {

	cpu="$(echo "$1" | $GREP "overallCpuUsage")"

	cpu="${cpu/*overallCpuUsage = /}"

	cpu="${cpu/,*/}"

}

function overallMemoryUsage () {

	mem="$(echo "$1" | $GREP "overallMemoryUsage")"

	mem="${mem/*overallMemoryUsage = /}"

	mem="${mem/,*/}"

}

# ---------------

function get_vmsvcsummaries () {

	n=0

	cmd=""

#	echo "$vmlist" | \

	while read vmline ; do

		id[$n]="${vmline%% *}"

		temp="${vmline#${id[$n]} }"

		name[$n]="${temp%% *}"

		cmd="$cmd""vim-cmd vmsvc/get.summary ${id[$n]} \\\; "

		(( n++ ))

	done <<EOF

$vmlist

EOF

	vmsummaries="$($SSH "$HOST" $cmd)"

}

# ---------------

function VMoverallCpuUsage () {

	cpulist="$(echo "$1" | $GREP "overallCpuUsage")"

	n=0

	while read c ; do

		temp="${c/*overallCpuUsage = /}"

		vmcpu[$n]="${temp/,*/}"

		if [ "${vmcpu[$n]}" == "<unset>" ]; then

			vmcpu[$n]="0"			

		fi

		(( n++ ))

	done <<EOF

$cpulist

EOF

}

function VMoverallGuestMemUsage () {

	memlist="$(echo "$1" | $GREP "guestMemoryUsage")"

	n=0

	while read m ; do

		temp="${m/*guestMemoryUsage = /}"

		vmmem[$n]="${temp/,*/}"

		if [ "${vmmem[$n]}" == "<unset>" ]; then

			vmmem[$n]="0"			

		fi

		(( n++ ))

	done <<EOF

$memlist

EOF

}

function VMoverallHostMemUsage () {

	memlist="$(echo "$1" | $GREP "hostMemoryUsage")"

	n=0

	while read m ; do

		temp="${m/*hostMemoryUsage = /}"

		vmmem[$n]="${temp/,*/}"

		if [ "${vmmem[$n]}" == "<unset>" ]; then

			vmmem[$n]="0"			

		fi

		(( n++ ))

	done <<EOF

$memlist

EOF

}

# ---------------

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

       	get_infos

	if [ -n "$summary" ]; then

                echo yes

                exit 0

        else

		echo "Cannot connect to ESX server $HOST"

                exit 1

        fi

fi

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

	get_infos

	if [ -z "$summary" ]; then

		echo "Cannot connect to ESX server $HOST"

		exit 1

	fi

	case "$which_info" in

		"cpu" )

			echo 'graph_title ESXi Domain CPU Usage'

			echo 'graph_args -l 0'

			echo 'graph_scale no'

			echo 'graph_vlabel CPU usage in MHz'

			echo 'graph_category esx'

			echo 'graph_info This graph shows the average CPU MHz used by each domain'

			name="Domain_0"

			echo "$name.label $name"

			echo "$name.type GAUGE"

			echo "$name.draw AREA"

			echo "$name.min 0"

			echo "$name.info CPU MHz used by $name"

			get_vmlist

			if [ -n "$vmlist" ]; then

				n=0

				cmd=""

				while read vmline ; do

					id="${vmline%% *}"

					temp="${vmline#$id }"

					name="${temp%% *}"

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

					echo "$name.label $name"

					echo "$name.type GAUGE"

					echo "$name.draw STACK"

					echo "$name.min 0"

					echo "$name.info CPU MHz used by $name"

					(( n++ ))

				done <<EOF

$vmlist

EOF

			fi;;

		"mem" | "hmem" | "gmem" )

			echo 'graph_title ESXi Domain '"$which_info"' Usage'

			echo 'graph_args -l 0'

			echo 'graph_scale no'

			echo 'graph_vlabel Memory usage in Megabytes'

			echo 'graph_category esx'

			echo 'graph_info This graph shows the average Memory used by each domain'

			name="Domain_0"

			echo "$name.label $name"

			echo "$name.type GAUGE"

			echo "$name.draw AREA"

			echo "$name.min 0"

			echo "$name.info Memory usage for $name"

			get_vmlist

			if [ -n "$vmlist" ]; then

				n=0

				cmd=""

				while read vmline ; do

					id="${vmline%% *}"

					temp="${vmline#$id }"

					name="${temp%% *}"

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

					echo "$name.label $name"

					echo "$name.type GAUGE"

					echo "$name.draw STACK"

					echo "$name.min 0"

					echo "$name.info Memory usage for $name"

					(( n++ ))

				done <<EOF

$vmlist

EOF

			fi;;

	esac

        exit 0

fi

# ---------------

# Get the informations

get_infos

if [ -z "$summary" ]; then

	echo "Cannot connect to ESX server $HOST"

	exit 1

fi

case $which_info in

	"cpu" ) overallCpuUsage "$summary" ;;

	"mem" | "hmem" | "gmem" ) overallMemoryUsage "$summary" ;;

esac

get_vmlist

if [ -n "$vmlist" ]; then

	get_vmsvcsummaries

	case $which_info in

		"cpu" ) VMoverallCpuUsage "$vmsummaries";;

		"mem" |	"hmem" ) VMoverallHostMemUsage "$vmsummaries";;

		"gmem" ) VMoverallGuestMemUsage "$vmsummaries";;

	esac

fi

# ---------------

# Print information Munin style

case $which_info in

	"cpu" ) echo "Domain_0.value ""$cpu";;

	"mem" | "gmem" | "hmem" ) echo "Domain_0.value ""$(($mem))";;

esac

if [ -n "$vmlist" ]; then

	n=0

	while [ -n "${id[$n]}" ]; do

		#echo ${id[$n]} ${name[$n]}  ${vmcpu[$n]} ${vmmem[$n]}

		nicename=`echo ${name[$n]} | sed 's/[^a-z|A-Z|0-9]/\_/g'`

		case $which_info in

			"cpu" ) echo "$nicename".value "${vmcpu[$n]}";;

			"mem" | "gmem" | "hmem" ) echo "$nicename".value "$((${vmmem[$n]}))";;

		esac

		(( n++ ))

	done

fi