Munin contributed plugins

#!/bin/sh

#

# Plugin Configuration

#  [openvpn_multi]

#   user root

#   env.statusfile /var/log/openvpn.status

#   env.userlist user1 user2 ...

#

#

# No error handling/mapping for ${userlist} => ${statusfile}

#

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

# scripts):

#

#%# family=auto

#%# capabilities=autoconf suggest

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

	if [ -f ${statusfile} ]; then

		echo yes

		exit 0

	else

		echo "no (${statusfile} not found)"

		exit 1

	fi

fi

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

	echo "Configure a status file..."

	exit 0

fi

FieldAttrib () {

	echo "${USER}_in.label ${USER} Received"

	echo "${USER}_in.type DERIVE"

	echo "${USER}_in.min 0"

	echo "${USER}_in.graph no"

	echo "${USER}_in.cdef ${USER}_in,1,*"

	echo "${USER}_out.label ${USER} Bps"

	echo "${USER}_out.type DERIVE"

	echo "${USER}_out.min 0"

	echo "${USER}_out.negative ${USER}_in"

	echo "${USER}_out.cdef ${USER}_out,1,*"

}

GetValues () {

	if grep -q ^$USER $statusfile; then

		awk -F , '/^'"$USER"'/ {print $1"_in.value "$3 "\n"$1"_out.value "$4}' $statusfile

	else

		echo "${USER}_in.value -1"

		echo "${USER}_out.value -1"

	fi

}

# Setup config

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

        echo "graph_title Root Graph of Openvpn Traffic by CN"

        echo "graph_args --base 1024 --lower-limit 0"

        echo "graph_vlabel Bytes Out (-) / In (+) per \${graph_period}"

	echo "graph_category openvpn"

	echo "graph_info This graph shows the bandwidth usage in Bytes/s. It prepulates the graph lines from a list of user CN's in the plugin conf file, this must correlate with the values in the ${statusfile} log file."

        for USER in $userlist

        do

		FieldAttrib

        done

        for USER in $userlist

        do

		echo "multigraph openvpn_multi.${USER}"

        	echo "graph_title ${USER} sub-graph"

		echo "graph_category openvpn"

		echo "graph_info This graph shows the bandwidth usage in bytes/s. It prepulates the graph lines from a list of user CN's in the plugin conf file, this must correlate with the values in the ${statusfile} log file."

		FieldAttrib

	done

	exit 0

fi;

# Get .values for root graph

for USER in $userlist

do

	GetValues

done

# Get .values for sub-graphs

for USER in $userlist

do

	echo "multigraph openvpn_multi.${USER}"

	GetValues

done