Munin contributed plugins

#!/bin/sh

#

# Plugin plotting the Percentage of time needed to reach each host on the way to a certain host

# Uses MTR http://www.bitwizard.nl/mtr/ to do the job

#

# Version: 1.0

# Author: tobias.geiger@vido.info

# Please email me bugs/suggestions

#

# Version: 1.1

# Author: charlie@evilforbeginners.com

# changed: munin eats 1 character ds-names. prefix with "hop_"

#

#

# HINT: Needs a bigger TIMEOUT-Value than the default (10) in /etc/munin/plugin-conf.d/munin-node ,

# e.g.:

#  [mtr100_*]

#  timeout 60

#

#

#

# Parameters:

#

#     config   (required)

#     autoconf (optional - only used by munin-config)

#

# Magic markers (optional - used by munin-config and some installation

# scripts):

#%# family=contrib

#%# capabilities=autoconf

totrace=`basename $0 | sed 's/^mtr100_//g'`

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

    if ( mtr -nrc 1 localhost 2>/dev/null >/dev/null ); then

        echo yes

        exit 0

    else

        if [ $? -eq 127 ]

        then

            echo "no (mtr program not found - install the mtr(-tiny) package)"

            exit 1

        else

            echo no

            exit 1

        fi

    fi

exit 0

fi

dotrace() {

LC_ALL=C mtr -nrs 1024 -c 5 $totrace | grep -vi -E "^HOST:|^Start:" | LC_ALL=C  awk -v C=$1 -v SRC_HOSTNAME=$(hostname) ' {

label=$2

x=gsub("\\.","_",label)

count=NR

lab[count]=count

name[count]=$2

val[count]=$6

total+=$6

}

END {

    # Hard code the first hop (hop_0) as the local hostname

    if ( C != "config" ) { print "hop_0.value U" }

    if ( C == "config" ) { print "hop_0.label " SRC_HOSTNAME }

    if ( C == "config" ) { print "hop_0.draw AREA" }

    for (x=1; x<=count; x++) {

        value=(val[x]/total)*100

        if ( C != "config" ) { printf "%s.value %2.2f\n","hop_" lab[x],value }

        if ( C == "config" ) { print "hop_" lab[x] ".label " name[x] }

        if ( C == "config" ) { print "hop_" lab[x]".draw STACK" }

    }

}'

}

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

    echo 'graph_title Traceroute (%) to '$totrace

    echo 'graph_args --base 1000 -l 0 -u 100 -r'

    echo 'graph_vlabel ms (percentage)'

    echo 'graph_category network'

    echo 'graph_scale no'

    echo 'graph_period second'

    echo 'graph_info This graph shows the Percentage needed for each hop on the way to '$totrace

    dotrace config;

    exit 0

else

    dotrace;

fi