Munin contributed plugins

#!/bin/sh

# Copyright (C) 2009 Andreas Thienemann <andreas@bawue.net>

#

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

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

# the Free Software Foundation; version 2 only

#

# 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 Library General Public License for more details.

#

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

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

# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#

# 

# Plugin to monitor the load on a cyrus imapd server

#

# Usage: Link or copy into the munin-node plugin directory

#

# Installation node: Should most likely run as root:

# [cyrus-imapd]

# user root

#

#

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

# installation scripts):

#

#%# family=contrib

#%# capabilities=autoconf

# IMAP Configuration Directory

CONFIGDIR=$(awk -F : '/^configdirectory:/ { gsub(/ /, "", $2); print $2 }' /etc/imapd.conf 2> /dev/null)

PROCDIR="${CONFIGDIR}/proc"

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

	if [ "x${CONFIGDIR}x" != "xx" ] && [ -d ${PROCDIR} ]; then

		echo yes

	else

		echo no

	fi

	exit 0

fi

# Check if we actually got some sensible data

if [ "x${CONFIGDIR}x" == "xx" ]; then

	exit 1

fi

# If run with the "config"-parameter, give out information on how the

# graphs should look. 

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

	echo 'graph_title Cyrus IMAPd Load'

	echo 'graph_args --base 1000 -l 0'

	echo 'graph_vlabel connections'

	echo 'graph_scale no'

	echo 'graph_category cyrus'

	echo 'graph_info Current connections to the imap server. <a href="http://trac.bawue.org/">bawue.net e.V. Trac repository</a>.'

	echo 'graph_oder connections authenticated_users unique_users'

	echo 'connections.label Connections'

	echo 'connections.info Number of connections to the imap server.'

	echo 'authenticated_users.label Authenticated Users'

	echo 'authenticated_users.info Number of authenticated users logged into the imap server.'

	echo 'unique_users.label Unique Users'

	echo 'unique_users.info Number of unique users on the imap server.'

	# Last, if run with the "config"-parameter, quit here (don't

	# display any data)

	exit 0

fi

# Print the number of connections to the imap server

echo -n "connections.value "

ls ${PROCDIR} | wc -l

# Read the proc files and get the logged in users

echo -n "authenticated_users.value "

awk '{ split(substr($0, match($0, "]")+1), a); if (a[1] != "") print a[1] }' ${PROCDIR}/* | wc -l

# Read the proc files and get the number of unique users

echo -n "unique_users.value "

awk '{ split(substr($0, match($0, "]")+1), a); if (a[1] != "") print a[1] }' ${PROCDIR}/* | sort -u | wc -l