- Initial version of munin plugins for FreeBSD
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153
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#!/bin/sh
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#
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# Copyright (c) 2015 Babak Farrokhi. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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#
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# 04-Aug-2015 @farrokhi
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# This script extracts pf firewall statistics from from "pfctl -vsi"
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# on FreeBSD and feeds to munin
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#
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# Magic markers:
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#%# family=auto
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#%# capabilities=autoconf suggest
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SCRIPT_NAME=$(basename $0)
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STAT_TYPE=`echo $SCRIPT_NAME | sed -n s/pf_//p`
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PFCTL="/sbin/pfctl"
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STATFILE=`mktemp -t pf`
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${PFCTL} -vsi > ${STATFILE} 2>/dev/null
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print_config()
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{
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local fname=$1; shift;
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local fdesc=$1; shift;
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echo "${fname}.label ${fdesc}"
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echo "${fname}.draw LINE1"
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echo "${fname}.type DERIVE"
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echo "${fname}.min 0"
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}
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if [ $# -lt 1 ]; then
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case ${STAT_TYPE} in
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state)
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cat ${STATFILE} | grep "^State Table" -A4 | grep "current" | awk '{print "state.value "$3}'
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;;
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state_act)
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cat ${STATFILE} | grep "^State Table" -A4 | tail -3 | awk '{print "state_"$1".value",$2}'
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;;
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source)
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cat ${STATFILE} | grep "^Source Tracking Table" -A4 | grep "current" | awk '{print "source.value "$3}'
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;;
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source_act)
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cat ${STATFILE} | grep "^Source Tracking Table" -A4 | tail -3 | awk '{print "source_"$1".value",$2}'
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;;
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counters)
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cat ${STATFILE} | grep "^Counters" -A15 | tail -15 | awk '{print "counter_"$1".value",$2}'
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;;
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esac
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elif [ "$1" == "suggest" ]; then
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echo "state"
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echo "state_act"
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echo "source"
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echo "source_act"
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echo "counters"
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elif [ "$1" == "autoconf" ]; then
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${PFCTL} -si >/dev/null 2>&1 && echo yes || echo no
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exit 0
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elif [ "$1" == "config" ]; then
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LIMITFILE=`mktemp -t pf`
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${PFCTL} -vsm > ${LIMITFILE} 2>/dev/null
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MAX_STATES=`cat ${LIMITFILE} | grep "^states" | awk '{print $4}'`
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MAX_SRC=`cat ${LIMITFILE} | grep "^src-nodes" | awk '{print $4}'`
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rm ${LIMITFILE}
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case ${STAT_TYPE} in
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state)
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echo "graph_title State Table Entries"
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echo "graph_args --lower-limit 0 --base 1000"
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echo "graph_vlabel states"
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echo "graph_category firewall"
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echo "state.label current"
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echo "state.critical ${MAX_STATES}"
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;;
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state_act)
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echo "graph_title State Table Activity"
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echo "graph_args --lower-limit 0 --base 1000"
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echo "graph_vlabel actions / second"
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echo "graph_category firewall"
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print_config "state_searches" "search"
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print_config "state_inserts" "insert"
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print_config "state_removals" "removal"
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;;
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source)
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echo "graph_title Source Tracking Table Entries"
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echo "graph_args --lower-limit 0 --base 1000"
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echo "graph_vlabel sources"
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echo "graph_category firewall"
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echo "source.label current"
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echo "source.min 0"
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echo "source.critical ${MAX_SRC}"
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;;
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source_act)
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echo "graph_title Source Tracking Table Activity"
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echo "graph_args --lower-limit 0 --base 1000"
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echo "graph_vlabel actions / second"
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echo "graph_category firewall"
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print_config "source_searches" "search"
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print_config "source_inserts" "insert"
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print_config "source_removals" "removal"
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;;
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counters)
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echo "graph_title Misc Counters"
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echo "graph_args --lower-limit 0 --base 1000"
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echo "graph_vlabel actions / second"
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echo "graph_category firewall"
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for i in `cat ${STATFILE} | grep "^Counters" -A15 | tail -15 | awk '{print $1}' `; do
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print_config "counter_${i}" ${i}
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done
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;;
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esac
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fi
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rm ${STATFILE}
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