pdns_rec_cache

#!/bin/sh
#
#  pdns_recursor munin plugin.
#  Written by Sean Reifschneider <jafo@tummy.com> 2009-12-03
#  Placed in the public domain
#
#  Requires running as root:
#
#    echo '[pdns_rec_*]' >/etc/munin/plugin-conf.d/pdns_rec
#    echo 'user root' >>/etc/munin/plugin-conf.d/pdns_rec
#
#  Configuration variables:
#
#    rec_control:    Path to rec_control executable
#                    (default: /usr/bin/rec_control)
#
#%# family=auto
#%# capabilities=autoconf

REC_CONTROL="${rec_control:-/usr/bin/rec_control}"

if [ "$1" = "autoconf" ]; then
	if [ -e "$REC_CONTROL" ]; then
		echo yes
		exit 0
	else
		echo no
		exit 1
	fi
fi

RESENDS=`"$REC_CONTROL" get cache-resends`
ISRESENDS=""
[ "$RESENDS" != "UNKNOWN" ] && ISRESENDS="resends"

if [ "$1" = "config" ]; then
	echo 'graph_title PDNS Cache'
	echo "graph_order hits misses $ISRESENDS"
	echo 'graph_vlabel entries'
	echo 'graph_info Hit/miss rate'
	echo 'graph_category pdns'

	echo 'hits.label hits'
	echo 'hits.min 0'
	echo 'hits.max 1000000'
	echo 'hits.type DERIVE'
	echo 'hits.info Cache hits'

	echo 'misses.label misses'
	echo 'misses.min 0'
	echo 'misses.max 1000000'
	echo 'misses.type DERIVE'
	echo 'misses.info Cache misses'

	if [ "$RESENDS" != "UNKNOWN" ]; then
		echo 'resends.label resends'
		echo 'resends.min 0'
		echo 'resends.max 1000000'
		echo 'resends.type DERIVE'
		echo 'resends.info Cache resends'
	fi

	exit 0
fi

echo hits.value `"$REC_CONTROL" get cache-hits`
echo misses.value `"$REC_CONTROL" get cache-misses`
[ "$RESENDS" != "UNKNOWN" ] && echo resends.value `"$REC_CONTROL" get cache-resends`

exit 0