Munin contributed plugins

#!/bin/bash

#    This program is free software; you can redistribute it and/or modify

#    it under the terms of the GNU General Public License as published by

#    the Free Software Foundation; either version 2 of the License, or

#    (at your option) any later version.

#

#    This program is distributed in the hope that it will be useful,

#    but WITHOUT ANY WARRANTY; without even the implied warranty of

#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

#    GNU General Public License for more details.

#

#    You should have received a copy of the GNU General Public License

#    along with this program; if not, write to the Free Software

#    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

#

# Written by Daniele Albrizio <daniele@albrizio.it> march 2014

# Requires dhcpd-pools - ISC dhcpd pools usage analysis http://dhcpd-pools.sourceforge.net/

#

####

#%# family=manual

#%# capabilities=autoconf,multigraph

export WARN=85

export CRIT=98

DHCPD_POOLS_BIN=/usr/local/bin/dhcpd-pools

DHCPDCONF=/etc/dhcp3/dhcpd.conf

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

        echo yes

        exit 0

fi

$DHCPD_POOLS_BIN -c $DHCPDCONF --minsize=15 --limit=01 -fc  | grep -v "^$" | sort | sed 's/","/\t/g' | sed 's/"//g' |\

while read SCOPENAME IPSTART IPSTOP POOLMAX POOLCUR PERCENT TOUCH TC TCPERCENT BU BUPERCENT

do

    IPSTARTUS=`echo $IPSTART | sed 's/\./_/g'`

    let POOLWARN=${POOLMAX}*${WARN}/100

    let POOLCRIT=${POOLMAX}*${CRIT}/100

    let GRAPHTOP=${POOLMAX}*110/100

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

        echo "multigraph ${SCOPENAME}_$IPSTARTUS"

        echo "graph_title $SCOPENAME $IPSTART -> $IPSTOP (${POOLMAX})"

        echo "graph_args --base 1000 -l 0 --upper-limit $GRAPHTOP"

        echo "graph_vlabel Active Leases"

        echo "graph_scale no"

        echo "graph_category DhcpPools"

        echo "pool.label $SCOPENAME Active Leases"

        echo "pool.info Pool utilization"

        echo "pool.type GAUGE"

        echo "pool.min 0"

        echo "pool.max $POOLMAX"

        echo "pool.colour 00ff00"

        echo "pool.draw AREA"

        echo "pool.warning $POOLWARN"

        echo "pool.line $POOLWARN:ffc000:$WARN%"

        echo "pool.critical $POOLCRIT"

        echo "pool_fover.label Peer available leases"

        echo "pool_fover.colour aaaaaa"

        echo "pool_fover.draw LINESTACK1"

        echo "pool_fover.type GAUGE"

        echo "pool_fover.line $POOLCRIT:ff0000:$CRIT%"

        echo "#"

    else

        echo "multigraph ${SCOPENAME}_$IPSTARTUS"

        echo "pool.value $POOLCUR"

        echo "pool_fover.value $BU"

    fi

done