Munin contributed plugins

#!/bin/sh

#

# Wildcard-plugin to monitor FreeBSD em(4) and igb(4) network interfaces

# using sysctl dev.em.0.mac_stats 64-bit counters

# To monitor an # interface, link if_<interface> to this file. E.g.

#

#    ln -s /usr/share/munin/node/plugins-auto/if_ /etc/munin/node.d/if_em0

#

# ...will monitor em0.

#

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

# scripts):

#

#%# family=auto

#%# capabilities=autoconf suggest

INTERFACE=`basename $0 | sed 's/^ifem_//g'`

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

	if [ -x /sbin/sysctl ]; then

		echo yes

		exit 0

	else

		echo "no (/sbin/sysctl not found)"

		exit 0

	fi

fi

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

	if [ -x /sbin/sysctl ]; then

		/sbin/sysctl -q dev.em dev.igb | /usr/bin/awk -F '.' '/mac_stats\.total_pkts_recvd/{print $2$3;}'

		exit 0

	else

		exit 1

	fi

fi

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

	echo "graph_order rbytes obytes" 

	echo "graph_title $INTERFACE traffic"

	echo 'graph_args --base 1000'

	echo 'graph_vlabel bits per ${graph_period} in (-) / out (+)'

	echo 'graph_category network'

	echo "graph_info This graph shows the traffic of the $INTERFACE network interface. Please note that the traffic is shown in bits per second, not bytes."

	echo 'rbytes.label received'

        echo 'rbytes.type COUNTER'

        echo 'rbytes.graph no'

        echo 'rbytes.cdef rbytes,8,*'

        echo 'obytes.label bps'

	echo 'obytes.type COUNTER'

	echo 'obytes.negative rbytes'

	echo 'obytes.cdef obytes,8,*'

	echo "obytes.info Traffic sent (+) and received (-) on the $INTERFACE network interface."

	exit 0

fi

oid=`echo $INTERFACE | sed -E 's/^(em|igb)([0-9]+)$/dev\.\1\.\2\.mac_stats/g'`

rbytes='U'

obytes='U'

while read ev val; do

   case "$ev" in

	"$oid.good_octets_recvd:")

	   rbytes="$val"

	   ;;

        "$oid.good_octets_txd:")

	   obytes="$val"

	   ;;

        "$oid.good_octest_txd:")

	   obytes="$val"

	   ;;

   esac

done << EOF

$(/sbin/sysctl -q $oid 2>/dev/null)

EOF

printf "rbytes.value ${rbytes}\nobytes.value ${obytes}\n"