Munin contributed plugins

#!/bin/sh

# Author: mario manno <projects@manno.name>

# Description: measure traffic for one xen host

# Get xen host name from symlink

#

#%# family=auto

#%# capabilities=autoconf suggest

DOMAIN=$( basename $0 | sed 's/^xen_traffic_//g' )

NAME=$( echo $DOMAIN | sed -e's/-/_/g' ) 

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

    if which xm > /dev/null ; then

        echo yes

    else

        echo "no (xm not found)"

        exit 1

    fi

    if [ -r /proc/net/dev ]; then

        echo yes

    else

        echo "no (/proc/net/dev not found)"

        exit 1

    fi

    exit 0

fi

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

    xm list | awk '{print $1}' | egrep -v "^(Name|Domain-0)"

    exit 0

fi

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

    echo "graph_title Xen Traffic for $NAME"

    echo 'graph_vlabel bits in (-) / out (+) per ${graph_period}'

    echo 'graph_args --base 1024 -l 0'

    echo 'graph_category xen'

    echo 'out.label sent'

    echo 'out.type DERIVE'

    echo 'out.min 0'

    echo 'out.cdef out,8,*'

    echo 'in.label received'

    echo 'in.type DERIVE'

    echo 'in.min 0'

    echo 'in.cdef in,8,*'

    exit 0

fi

dev=$( xm network-list $DOMAIN | egrep "^[0-9]+" | sed 's@^.*vif/\([0-9]*\)/\([0-9]*\).*$@vif\1.\2@')

awk -v interface="$dev" \

    'BEGIN { gsub(/\./, "\\.", interface) } \

    $1 ~ "^" interface ":" {

        split($0, a, /: */); $0 = a[2]; \

        print "in.value " $1 "\nout.value " $9 \

    }' \

    /proc/net/dev