Munin contributed plugins

#!/bin/bash

# -*- bash -*-

: << =cut

=head1 NAME

ipvs_conn -Indicate the number of connections in ipvs

=head1 CONFIGURATION

[ipvs_*]

user root

env.ips IP1 IP2

=head1 AUTHOR

Ricardo Fraile <rfrail3@yahoo.es>

=head1 LICENSE

GPLv2

=head1 MAGICK MARKERS

 #%# family=auto

 #%# capabilities=autoconf

=cut

. $MUNIN_LIBDIR/plugins/plugin.sh

IPLIST=$ips

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

        echo yes

        exit 0

fi

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

        echo 'graph_title Ipvs Connections'

        echo 'graph_args --base 1000 -l 0 '

        echo 'graph_vlabel Connections'

        echo 'graph_scale no'

        echo 'graph_category loadbalancer'

        echo 'graph_info Indicate the number of active and inactive connections in Ipvs.'

	for IP in $IPLIST; do

		NM=`echo $IP | md5sum | cut -d - -f1 | sed 's/ //g' | cut -b 5-9`

	        echo "a$NM.label $IP ActiveConn"

        	echo "a$NM.type GAUGE"

	        echo "a$NM.min 0"

	        echo "i$NM.label $IP InActiveConn"

        	echo "i$NM.type GAUGE"

	        echo "i$NM.min 0"

	done

        exit 0

fi

# Get line number of match listen ip

function get_ip {

# Read the output

ipvsadm -l -n | nl | while read line; do

	# If match the ip, print the line number

	if ( echo $line | grep -e $IP > /dev/null ); then

		MAT=`echo $line | cut -d " " -f 1`

		echo $MAT

	fi

done

}

for IP in $IPLIST; do

	COUNT="0"

	ACTCONCNT="0"

	INACTCONCNT="0"

	F1=`mktemp`

	MATCH=`get_ip`

	ipvsadm -l -n | nl > $F1

	# Parse lines

	while read line; do

		# Get line numbers

		N=`echo $line | cut -d " " -f 1`

		# If line number match the line number of the match listen ip, print the line...

		if [ "$N" -gt "$MATCH" ]; then

			# ... except if the line contain TCP or UDP word (this start an other listen)

			if ( echo $line | grep -e TCP -e UDP > /dev/null ); then

				break

			fi

			# Get ActiveConn number

			NUM1=`echo $line | awk '{print $6}'`

			# Sum it

			ACTCONCNT=$(( ACTCONCNT + NUM1))

			# Get InActConn number

			NUM2=`echo $line | awk '{print $7}'`

			# Sum it

			INACTCONCNT=$(( INACTCONCNT + NUM2))

			COUNT=`expr $COUNT + 1`

		fi

	done < $F1

	# Print values

	NM=`echo $IP | md5sum | cut -d - -f1 | sed 's/ //g' | cut -b 5-9`

	echo a$NM.value $(( ACTCONCNT / COUNT ))

	echo i$NM.value $(( INACTCONCNT / COUNT ))

	# Remove temp file

	rm -f $F1

done