Munin contributed plugins

#!/bin/bash

# ping revision 2 (Jul 2012)

#

# This plugin shows ping statistics for several hosts on a single graph

#

# Configuration:

#   Add [ping] section with 'hosts' set to space-separated list of hostnames or addresses.

#   You can prefix host name with '<type>:' to change IP resolution mode,

#   e.g. 'AAAA:domain.tld' will request IPv6 record.

#   Always prefix IPv6 addresses with 'AAAA:' (internal limitation).

#

# Dependencies:

# 	host util is required

#

# OS:

# 	Linux

#

# Author: Artem Sheremet <dot.doom@gmail.com>

#

function normalize() {

	echo ${1//[^a-zA-Z0-9]/_}

}

function host_type() {

	case $1 in

		*:*)

			echo ${1/:*/}

			;;

		*)

			echo A

			;;

	esac

}

function host_name() {

	echo "${1/*:/}"

}

function ipof() {

	host -t $(host_type $1) $(host_name $1) |

		sort | grep -Eo 'address .*' | cut -d' ' -f2 | head -1

}

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

	echo 'graph_title Ping statistics

graph_vlabel Time,ms

graph_category network

graph_info ping statistics for several hosts'

	for host in $hosts; do

		echo "$(normalize $host).label $(host_name $host) ($(ipof $host))"

	done

	exit 0

fi

SYNC_FILE=/tmp/munin-ping-sync

echo -n >"$SYNC_FILE"

COUNT=0

for host in $hosts; do

	{

		case $(host_type $host) in

			AAAA)

				PING=ping6

				;;

			*)

				PING=ping

				;;

		esac

		TIME=$($PING -w 1 -c 1 `host_name $host` | awk '

			BEGIN {

				found = 0

				t = 0

			}

			$1 == "rtt" { found = 1; t = $4; }

			END {

				if (found == 1) {

					split(t, parts, "/");

					print parts[1]

				} else {

					print "U"

				}

			}

		')

		echo $(normalize $host).value $TIME

		echo ok >>"$SYNC_FILE"

	} &

	let COUNT=$COUNT+1

done

# wait for background processes to finish

while [ $(wc -l <"$SYNC_FILE") -lt $COUNT ]; do

	sleep 0.2

done