Munin contributed plugins

#!/usr/bin/perl -w

#

# Copyright (C) 2004 Jimmy Olsen

# Copyright (C) 2009 Xavier Montagutelli

#

# 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: snmp__cpu_usage,v $

# Revision 1.1  2009/09/21 06:59:33  root

# Initial revision

#

# Revision 1.1  2009/09/17 13:43:35  root

# Initial revision

#

# Revision 1.11  2004/12/10 18:51:43  jimmyo

# linux/apt* has been forced to LANG=C, to get predictable output.

#

# Revision 1.10  2004/12/10 10:47:47  jimmyo

# Change name from ${scale} to ${graph_period}, to be more consistent.

#

# Revision 1.9  2004/12/09 22:12:55  jimmyo

# Added "graph_period" option, to make "graph_sums" usable.

#

# Revision 1.8  2004/11/21 00:16:56  jimmyo

# Changed a lot of plugins so they use DERIVE instead of COUNTER.

#

# Revision 1.7  2004/11/16 20:08:26  jimmyo

# License cleanups.

#

# Revision 1.6  2004/11/12 20:28:03  ilmari

# No debugging info by default

#

# Revision 1.5  2004/09/08 15:25:33  ilmari

# Use /usr/bin/perl in all perl shebang lines.

#

# Revision 1.4  2004/09/07 13:19:22  ilmari

# SNMP plugins now honour the "host" environment variable if they can't deduce the hostname from zsh.

#

# Revision 1.3  2004/09/05 12:00:18  jimmyo

# Set family and capabilities.

#

# Revision 1.2  2004/09/04 21:58:28  jimmyo

# Set category and info fields.

#

# Revision 1.1  2004/04/30 22:22:07  jimmyo

# Added to SNMP based fibre-channel plugins: fc_if and fc_if_err.

#

# Revision 1.4  2004/04/30 16:58:14  jimmyo

# Added max.

#

# Revision 1.3  2004/02/22 20:17:58  jimmyo

# Typo fix

#

# Revision 1.2  2004/02/18 21:54:56  jimmyo

# Did a bit of work on the snmp-thingie.

#

# Revision 1.1  2004/01/02 18:50:00  jimmyo

# Renamed occurrances of lrrd -> munin

#

# Revision 1.1.1.1  2004/01/02 15:18:07  jimmyo

# Import of LRRD CVS tree after renaming to Munin

#

# Revision 1.1  2003/12/19 20:53:45  jimmyo

# Created by jo

#

#

#%# family=snmpauto

#%# capabilities=snmpconf

use strict;

use Munin::Plugin::SNMP;

my $DEBUG = 0;

my $host      = $ENV{host}      || undef;

my $port      = $ENV{port}      || 161;

my $community = $ENV{community} || "public";

my $iface     = $ENV{interface} || undef;

my $response;

if (defined $ARGV[0] and $ARGV[0] eq "snmpconf")

{

	print "number  1.3.6.1.4.1.2021.11.9\n";

	exit 0;

}

if ($0 =~ /^(?:|.*\/)snmp_([^_]+)_cpu_usage$/)

{

	$host  = $1;

	if ($host =~ /^([^:]+):(\d+)$/)

	{

		$host = $1;

		$port = $2;

	}

}

elsif (!defined($host))

{

	print "# Debug: $0 -- $1 -- $2\n" if $DEBUG;

	die "# Error: couldn't understand what I'm supposed to monitor.";

}

my $cpuUser     = "1.3.6.1.4.1.2021.11.9";

my $cpuSystem   = "1.3.6.1.4.1.2021.11.10";

my $cpuIdle     = "1.3.6.1.4.1.2021.11.11";

my $cpu = 0;

my %cpuCounters = ( 

	cpuUser 	=> "1.3.6.1.4.1.2021.11.9.$cpu", 	# The percentage of CPU time spent processing user-level code, calculated over the last minute

	cpuSystem	=> "1.3.6.1.4.1.2021.11.10.$cpu", 	# The percentage of CPU time spent processing system-level code, calculated over the last minute

	cpuIdle		=> "1.3.6.1.4.1.2021.11.11.$cpu",	# The percentage of processor time spent idle, calculated over the last minute

);

my $session = Munin::Plugin::SNMP->session(-translate =>

					   [ -timeticks => 0x0 ]);

if (!defined ($session))

{

	die "Croaking: could not establish SNMP object";

}

if (!defined ($session))

{

	die "Croaking: $error";

}

if ($ARGV[0] and $ARGV[0] eq "config")

{

	print "host_name $host\n";

	my $warn = undef;

	print "graph_title CPU Usage on $host\n";

	print "graph_args --base 1000 --lower-limit 0\n";

	print "graph_vlabel Percentage on one minute\n";

	print "graph_category system\n";

	print "graph_info This graph shows the CPU usage on one minute\n";

	my $firstCounter = 1;

	foreach my $c (keys %cpuCounters) {

		print $c . ".label $c\n";

		print $c . ".type GAUGE\n";

		if ($firstCounter) { 

			print $c . ".draw AREA\n";

			$firstCounter = 0;

		} else {

			print $c . ".draw STACK\n";

		}

		print $c . ".min 0\n";

	}

	exit 0; 

}

foreach my $c (keys %cpuCounters) {

	if (defined ($response = $session->get_request($cpuCounters{$c})) && $response->{$cpuCounters{$c}} =~ /^[0-9]*$/) {

		print $c . ".value ", $response->{$cpuCounters{$c}}, "\n";

	} else {

		print $c . ".value U\n";

	}

}