Munin contributed plugins

#!/bin/bash

#

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

# separated by time spend in user mode and kernel mode

#

# 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_*]

# 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; separate Kernel and User CPU graphs

# 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

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

        echo yes

        exit 0

fi

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

        echo 'graph_title Kernel CPU used by virtual machines'

        echo "graph_args --base 1000 -r --lower-limit 0 "

        echo 'graph_vlabel %'

        echo 'graph_scale no'

        echo 'graph_info This graph shows the percentage of processor time spent in kernel mode by the every single VM process.'

        echo 'graph_category Virtualization'

        echo 'graph_period second'

        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}_kernel.label ${VM_NAME}"

        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'`

        vboxmanage metrics query "${VM_NAME}" CPU/Load/Kernel | grep -E "^${VM_NAME}" | sed -r 's/^.*([0-9]+\.[0-9]+)%/'''${VM_NAME_PRINT}'''_kernel.value \1/'

done