Munin contributed plugins

#!/bin/sh

#

# Copyright (C) 2009 Alexey Illarionov <littlesavage@rambler.ru>

#

# Wildcard plugin to monitor ipfw rules counters

# Usage:

#

# Method 1:

#

# Link ipfwcnt_<rule number> to this file. E.g.

#

#  ln -s ipfwcnt_ ipfwcnt_100

#

# ... will monitror ipfw rule 100

#

# Method 2:

#

# 1. Add count rules to ipfw E.g.

#

#   ipfw add 100 count ip from any to table(1,0) in via rl0

#   ipfw add 200 count ip from any to table(1,1) in via rl0

#   ipfw add 300 count ip from any to table(1,2) in via rl0

#   ipfw add 400 count ip from any to not table(1) in via rl0

#

# 2. Link ipfwcnt_<name> to this file. E.g.

#   ln -s ipfwcnt_ ipfwcnt_rl0-in

#

# 3. Add rules configuration to plugins.conf:

# [ipfwcnt_rl0-in]

# user root

# env.rules		  group0 group1 group2 nogroup

# env.rule_group0	  100

# env.rule_group0_label   group0

# env.rule_group0_info    Incoming traffic of group 0

# env.rule_group1	  200

# env.rule_group1_label   group1

# env.rule_group1_info    Incoming traffic of group 1

# env.rule_group2	  300

# env.rule_group2_label   group2

# env.rule_group2_info    Incoming traffic of group 2

# env.rule_nogroup	  400

# env.rule_nogroup_label  nogroup

# env.rule_nogroup_info   Incoming traffic of no group

#

# ...  will monitor ipfw rules 100,200,300,400

#

# This plugin needs to be run as root.

#

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

# scripts):

#

#%# family=manual

NAME=`basename $0 | sed 's/^ipfwcnt_//g'`

if [ -z "$rules" ]; then

	if [ -z "$NAME" ]; then exit 1; fi

	rules="r$NAME"

	eval "rule_r$NAME=$NAME"

fi

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

	echo "graph_title Ipfw rules counters $NAME"

	echo 'graph_args --base 1000 -l 0'

	echo 'graph_vlabel bits / ${graph_period}'

	echo 'graph_category fw'

	draw="AREA"

	for rule in $rules; do

		eval "label0=\$rule_${rule}_label"

		eval "info0=\$rule_${rule}_info"

		label=${label0:-$rule}

		info=${info0:-$rule}

		echo "$rule.label $label"

		echo "$rule.draw $draw"

		echo "$rule.type DERIVE"

		echo "$rule.min 0"

		echo "$rule.cdef $rule,8,*"

		echo "$rule.info $info"

		draw="STACK"

	done

	echo "graph_info Ipfw rules counters $NAME"

	exit 0

fi

for rule in $rules; do

	eval "num=\$rule_$rule"

	if [ -z $(echo "$num" | sed 's/[0-9]//g') ]; then

		val0=$(/sbin/ipfw show $num 2>/dev/null | awk '{res+=$3;} END{print res;}')

	fi

	val=${val0:-"U"}

	echo "$rule.value $val"

done