Munin contributed plugins

#!/bin/sh

# -*- sh -*-

: << =cut

=head1 NAME

services - Plugin to monitor number of processes of different services

=head1 CONFIGURATION

This plugin uses the following configuration variables

 [services]

   env.datafile		- Path to file which contains list of services (default: /root/munin/services.list)

Datafile should contain lines which are used to detect number of running processes (ps ax | grep "LINE FROM FILE").

If a number of processes of some service is below 1 (e.g. 0) critical event happens (configure your munin.conf about "contact.NAME.command" to send mail or something else;

also nice line is 'contact.NAME.always_send critical' - not to stop sending alerts after critical event appears the first time).

Datafile may contain comment lines (begin with "#"), empty lines and even regular expressions (WARNING - not tested, use carefully)

Example of datafile:

#############################

# This line is a comment and next lines are names of some services

sshd

smbd

nmbd

lighttpd

# Next line is an empty line

named

# Next line is a name of service with a path

/usr/local/sbin/upsd

# Next line is a line with spaces

BackupPC -d

#############################

This plugin does not draw any graphs. It is only written to send alerts via mail or something else.

=head1 AUTHOR

Copyright (C) 2010, Sergey Urushkin

=head1 LICENSE

GPLv3

=head1 MAGIC MARKERS

 #%# family=contrib

 #%# capabilities=autoconf

=cut

DATAFILE=${datafile:-/root/munin/services.list}

SERVICES=`[ -r "$DATAFILE" ] && grep -v '^[[:space:]]*\(#.*\|\)$' "$DATAFILE" | sed 's/[[:space:]]/___/g'`

[ -z "$SERVICES" ] && echo "Datafile is empty or not readable" 2>&1 && exit 1

if [ "$1" = "autoconf" ]

then

    echo "yes"

    exit 0

fi

if [ "$1" = "config" ]

then

    echo "graph_title Running services"

    echo "graph no"

    for SERV in ${SERVICES}

    do

	SERVW=`echo "$SERV" | sed 's/___/ /g'`

	echo "$SERV.label $SERVW"

	echo "$SERV.critical 1:"

    done

    exit 0

fi

for SERV in ${SERVICES}

do

    SERVW=`echo "$SERV" | sed 's/___/[[:space:]]*/g'`

    VALUE=`ps ax | grep "$SERVW" | grep -v grep | wc -l | tr -d '[[:space:]]'`

    echo "$SERV.value $VALUE"

done