Munin contributed plugins

#!/usr/bin/perl -w

#

# Copyright (C) 2008 Rune Nordb?e Skillingstad

#

# Plugin to monitor status in Nagios

#

# Usage: copy or link into /etc/munin/plugins

#

# Parameters:

#

#       config   (required)

#       autoconf (optional - used by munin-config)

#

# Config variables:

#

#       statuslog       - Which logfile to use

#                         Might be /var/log/nagios2/nagios.log if 

#                         /var/log/nagios/status.log is missing

#

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

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; version 2 dated June,

# 1991.

#

# 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 General Public License for more details.

#

# You should have received a copy of the GNU 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.

#

#

# $Log$

#%# family=auto

#%# capabilities=autoconf

use strict;

use warnings;

# File location may be defined with environment variable

my $NAGIOSSTAT=($ENV{'statuslog'} || '/var/log/nagios/status.log');

if ($ARGV[0]) {

  if ($ARGV[0] eq 'autoconf') {

    if (-r $NAGIOSSTAT) {

      print "yes";

      exit 0;

    } else {

      print "no (Nagios status file not found)";

      exit 1;

    }

  } elsif ($ARGV[0] eq "config") {

    print "graph_args --base 1000 -l 0 --vertical-label Checks\n";

    print "graph_title Nagios status\n";

    print "graph_category munin\n";

    print "graph_info This graph shows how many Nagios checks are in warning or critical state.\n";

    print "graph_order hdown hunknown swarning scritical sunknown\n";

    print "hdown.label Hosts down\n";

    print "hdown.info Number of Nagios hosts in DOWN state\n";

    print "hdown.type GAUGE\n";

    print "hdown.draw AREA\n";

    print "hdown.warning 20\n";

    print "hdown.critical 25\n";

    print "hunknown.label Hosts unknown\n";

    print "hunknown.info Number of Nagios hosts in UNKNOWN state\n";

    print "hunknown.type GAUGE\n";

    print "hunknown.draw STACK\n";

    print "hunknown.warning 15\n";

    print "hunknown.critical 20\n";

    print "swarning.label Services warning\n";

    print "swarning.info Number of Nagios services in WARNING state\n";

    print "swarning.type GAUGE\n";

    print "swarning.draw LINE2\n";

    print "swarning.warning 20\n";

    print "swarning.critical 25\n";

    print "scritical.label Services critical\n";

    print "scritical.info Number of Nagios services in CRITICAL state\n";

    print "scritical.type GAUGE\n";

    print "scritical.draw LINE2\n";

    print "scritical.warning 15\n";

    print "scritical.critical 20\n";

    print "sunknown.label Services unknown\n";

    print "sunknown.info Number of Nagios services in UNKNOWN state\n";

    print "sunknown.type GAUGE\n";

    print "sunknown.draw LINE2\n";

    print "sunknown.warning 15\n";

    print "sunknown.critical 20\n";

  }

  exit 0;

}

my $HDOWN     =0;

my $HUNKNOWN  =0;

my $SWARNING  =0;

my $SCRITICAL =0;

my $SUNKNOWN  =0;

my $type = "";

my %values;

open (STATUS, $NAGIOSSTAT) or die;

while(<STATUS>) {

    chomp();

    if(/^\s+\}\s*$/) {

	$type = "";

    }

    if($type) {

	push(@{$values{$type}}, $_);

    }

    if(/^host \{/) {

	$type = "host";

    }

    if(/^service \{/) {

	$type = "service";

    }

}

close (STATUS);

$HDOWN     = grep(/current_state=1/, @{$values{'host'}});

$HUNKNOWN  = grep(/current_state=2/, @{$values{'host'}});

$SWARNING  = grep(/current_state=1/, @{$values{'service'}});

$SCRITICAL = grep(/current_state=2/, @{$values{'service'}});

$SUNKNOWN  = grep(/current_state=3/, @{$values{'service'}});

print "hdown.value $HDOWN\n";

print "hunknown.value $HUNKNOWN\n";

print "swarning.value $SWARNING\n";

print "scritical.value $SCRITICAL\n";

print "sunknown.value $SUNKNOWN\n";