Munin contributed plugins

#!/bin/sh

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

# Description: measure traffic for all xen hosts

#

# Changelog:

# Also handle domUs with named network interfaces.

# Ward Vandewege (ward@gnu.org), 2011-04-20

#

#%# family=auto

#%# capabilities=autoconf

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

    if which xm > /dev/null ; then

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

            echo yes

        else

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

        fi

    else

        echo "no (xm not found)"

    fi

    exit 0

fi

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

    echo 'graph_title Xen Traffic'

    # shellcheck disable=SC2016

    echo 'graph_vlabel bits received (-) / sent (+) per ${graph_period}'

    echo 'graph_args --base 1024 -l 0'

    echo 'graph_category Virtualization'

    DOMAINS=$(xm list | awk '{print $1}' | grep -v -E "^(Name|Domain-0)")

    for dom in $DOMAINS; do

        name=$( echo "$dom" | tr .- __ )

        #echo $name"UP.label $name"

        #echo $name"DOWN.label $name"

        echo "${name}Down.label received"

        echo "${name}Down.type COUNTER"

        echo "${name}Down.graph no"

        echo "${name}Down.cdef ${name}Down,8,*"

        echo "${name}Up.label ${name}"

        echo "${name}Up.type COUNTER"

        echo "${name}Up.negative ${name}Down"

        echo "${name}Up.cdef ${name}Up,8,*"

    done

    exit 0

fi

DOMAINS=$(xm list | awk '{print $1}' | grep -v -E "^(Name|Domain-0)")

for dom in $DOMAINS; do

    dev=$( xm list "$dom" --long | awk '/vifname / { print $2 }' | sed 's/)//' )

    if [ -z "$dev" ]; then

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

    fi

    name=$( echo "$dom" | tr .- __ )

    #awk -v name="$name" -v interface="$dev" -F'[: \t]+' \

    #'{ sub(/^ */,""); if ($1 == interface) \

    #print name"DOWN.value "$2"\n"name"UP.value "$10; }' /proc/net/dev

    awk -v name="$name" -v interface="$dev" \

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

        $1 ~ "^" interface ":" {

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

            print name"Down.value " $1 "\n"name"Up.value " $9;

        }' \

        /proc/net/dev

done