Munin contributed plugins

#!/bin/bash

#

# evaluate the current ram usage of every vm running on this host

#

# Date: 2011-09-09

# Author: Gerald Schnabel ger@ldschnabel.de

#

# Usage: Place in /etc/munin/plugins (or link it there using ln -s)

#

# This plugin has to run with the same user like the VirtualBox Server rans

# Update munin plugin-conf.d/munin-node file with

# [virtualbox_ram]

# user VIRTUAL_BOX_SERVER_USER

#

# Parameters understood:

#

# config (required)

# autoconf (optional - used by munin-config)

#

# Versions

# 2013-05-25 robi fix for handling vm names with dots and dashes; scale graph size by the max memory available; display GB on scales and legend

# 2011-09-22 ger@ldschnabel.de fix for handling vm names with spaces and setup metric period to get values

# 2011-09-09 ger@ldschnabel.de initial version

# Todo: sort

# readarray -t sorted < <(printf '%s\0' "${array[@]}" | sort -z | xargs -0n1)

# see http://stackoverflow.com/questions/7442417/how-to-sort-an-array-in-bash

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

        echo yes

        exit 0

fi

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

RAMTOT=`free -b | grep Mem | awk '{print $2}'`

        echo 'graph_title Memory usage of virtual machines'

        echo "graph_args --base 1024 -r --lower-limit 0 --upper-limit $RAMTOT --units-exponent 9"

        echo 'graph_vlabel GB'

        echo 'graph_info This graph shows the ram usage of every single VM process.'

        echo 'graph_category Virtualization'

        echo 'graph_period second'

        I=0

        vboxmanage list vms | sed -r 's/^\"(.*)\" \{.*\}$/\1/' | while read VM_NAME; do

                VM_NAME_PRINT=`echo -e "${VM_NAME}" | sed 's/[^A-Za-z0-9_]/_/g'`

                echo "${VM_NAME_PRINT}.label ${VM_NAME}"

  	echo "${VM_NAME_PRINT}.cdef ${VM_NAME_PRINT},1024,*"

                if [ ${I} -eq 0 ]; then

                        echo "${VM_NAME_PRINT}.draw AREA"

                else

                        echo "${VM_NAME_PRINT}.draw STACK"

                fi

                I=$(( I + 1 ))

        done

        exit 0

fi

vboxmanage metrics setup --period 5 --samples 3

sleep 5

vboxmanage list vms | sed -r 's/^\"(.*)\" \{.*\}$/\1/' | while read VM_NAME; do

        VM_NAME_PRINT=`echo -e "${VM_NAME}" | sed 's/[^A-Za-z0-9_]/_/g'` # s/[.]/_/g;s/[ ]/_/g;s/[-]/_/g

        vboxmanage metrics query "${VM_NAME}" RAM/Usage/Used | grep -E "^${VM_NAME}" | sed -r 's/^.* ([0-9]+) kB$/'''${VM_NAME_PRINT}'''.value \1/'

done