Munin contributed plugins

#!/bin/bash

# This script is intended for use with Munin to monitor

# ping response time from hosts and through interfaces specified.

# v. 1.1, 12/16/2007

# (c) Alex Yanchenko (yanchenko{at}gmail.com), 2007

# Distributed under GPL v.3 (http://www.gnu.org/licenses/gpl-3.0.txt)

#

# The plugin can utilize automatic configuration,

# here are the basic steps (require root privileges):

# 1. Copy it as /usr/share/munin/plugins/pinger

# 2. Make executable: "chmod 755 /usr/share/munin/plugins/pinger"

# 3. Customize hosts, interfaces and ping count below

# 4. As pinging takes much time, add a

# --

# [pinger]

# timeout 60

# --

# record to /etc/munin/munin-node.conf to avoid timeouts.

# 5. Run "munin-node-configure --shell", you should see smth like

# "ln -s /usr/share/munin/plugins/pinger /etc/munin/plugins/pinger"

# 6. Run the proposed command to create a link.

# 7. To verify, run "munin-node-configure", you should notice the "pinger" record

#

# Plugin                     | Used | Suggestions

# ------                     | ---- | -----------

# pinger                     | yes  |

#

# 8. Restart munin: "/etc/init.d/munin-node restart"

# 9. Hold on for 5 minutes at most and watch the graphs appear.

#

#%# family=contrib

#%# capabilities=autoconf

#----- PROPERTIES START -----#

# An array of interfaces to ping through, space-separated.

# In case vnstat is installed, interface names will be fetced

# from it, 'nicknames'included.

INTERFACE=(eth2 eth3)

# An array of hosts to ping, space-separated.

HOST=(dc.volia.com hosting.rbc.ru slicehost.com)

# Ping count, higher values lead to more precise

# results yet take more time

PING=3

#----- PROPERTIES END -----#

# Try to get interface name from vnstat, make sure the name is assigned

function IF_NAME() {

        ARG=$1

        if [[ $(which vnstat &>/dev/null; echo $?) == 0 ]]

                then

                        IF_NAME="$(vnstat | grep "$ARG" | cut -d" " -f2,3 | cut -d":" -f1)"

                else

                        IF_NAME="$ARG"

        fi

        echo $IF_NAME

}

# Ping given host through a given interface

function PINGER() {

        ping $2 -c${PING} -I$1 | grep "rtt min/avg/max/mdev" | cut -d" " -f4 | cut -d"/" -f2 | cut -d"." -f1

}

case $1 in

	autoconf)

		which ping

	       	if [[ "$?" = "0" ]]; then

	               	echo yes

	                exit 0

	       	else

	               	echo "no (ping not present)"

	                exit 1

	       	fi

		;;

        config)

cat << EOM

graph_title Pinger

graph_category network

graph_info A nice thingy to ping remote hosts.

graph_vlabel msec

graph_args --base 1000 --lower-limit 0

EOM

                        for (( i=0; i<"${#HOST[*]}"; i++ ))

                                do

                                        for (( j=0; j<"${#INTERFACE[*]}"; j++ ))

                                                do

                                                        echo "${j}_${i}.label $(IF_NAME ${INTERFACE[$j]}) - ${HOST[$i]}"

                                        done

                        done

                ;;

        *)

                        for (( i=0; i<"${#HOST[*]}"; i++ ))

                                do

                                        for (( j=0; j<"${#INTERFACE[*]}"; j++ ))

                                                do

                                                        echo "${j}_${i}.value $(PINGER ${INTERFACE[$j]} ${HOST[$i]})"

                                                done

                                done

                ;;

esac