Munin contributed plugins

#!/usr/bin/perl -w

#

# Copyright (C) 2004 Jimmy Olsen

#

# 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.

#

#

# $Log$

# Revision 1.10  2004/11/16 20:08:26  jimmyo

# License cleanups.

#

# Revision 1.9  2004/09/08 15:25:33  ilmari

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

#

# Revision 1.8  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 1.7  2004/09/07 12:58:41  ilmari

# SNMP plugin "df" properly strips the label and serial number fromWindows drive labels.

#

# Revision 1.6  2004/09/05 12:00:18  jimmyo

# Set family and capabilities.

#

# Revision 1.5  2004/09/04 21:58:28  jimmyo

# Set category and info fields.

#

# Revision 1.4  2004/09/04 21:33:12  jimmyo

# Handle strange characters better.

#

# Revision 1.3  2004/09/04 21:08:16  jimmyo

# SNMP df plugin now talks Windowese.

#

# Revision 1.2  2004/09/03 22:56:51  jimmyo

# Added support for SNMP probing.

#

# Revision 1.1  2004/04/29 22:29:57  jimmyo

# New SNMP plugin for disk usage.

#

# 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 Net::SNMP;

my $DEBUG = 0;

my $MAXLABEL = 20;

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 "index   1.3.6.1.2.1.25.2.3.1.1.\n";

	print "index   1.3.6.1.2.1.25.5.1.1.2.\n";

	print "require 1.3.6.1.2.1.25.5.1.1.2. [1-9]\n";

	print "require 1.3.6.1.2.1.25.2.2.0\n"; # memsize

	print "require 1.3.6.1.2.1.25.2.3.1.2. 1.3.6.1.2.1.25.2.1.(2|3)\n"; # Type=fixed disk

	print "require 1.3.6.1.2.1.25.2.3.1.5. [1-9]\n"; # Size > 0

	exit 0;

}

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

{

	$host  = $1;

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

	{

		$host = $1;

		$port = $2;

	}

}

elsif (!defined($host))

{

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

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

}

# Disk level

my $hrDeviceType           = "1.3.6.1.2.1.25.3.2.1.2."; # Should be iso.3.6.1.2.1.25.3.1.6 (DiskStorage)

my $hrDiskStorageRemoveble = "1.3.6.1.2.1.25.3.6.1.3."; # Should be false (2).

                                                        # Windows reports 0.

my $hrDiskStorageCapacity  = "1.3.6.1.2.1.25.3.6.1.4."; # Should be more than 0

# Partition level

my $hrPartitionFSIndex     = "1.3.6.1.2.1.25.3.7.1.5."; # Should be more than 0

my $hrFSMountPoint         = "1.3.6.1.2.1.25.3.8.1.2."; # Used to look up filesystem

# Filesystem level

my $hrStorageType          = "1.3.6.1.2.1.25.2.3.1.2."; # Backup for hrFS*

my $hrStorageDesc          = "1.3.6.1.2.1.25.2.3.1.3."; # Used as key from partitions

my $hrStorageSize          = "1.3.6.1.2.1.25.2.3.1.5."; # Data point 1

my $hrStorageUnit          = "1.3.6.1.2.1.25.2.3.1.4."; # Data point 3

my $hrStorageUsed          = "1.3.6.1.2.1.25.2.3.1.6."; # Data point 2

# Memory

my $hrSWRunPerfMem = "1.3.6.1.2.1.25.5.1.1.2.";

my ($session, $error) = Net::SNMP->session(

		-hostname  => $host,

		-community => $community,

		-port      => $port

	);

if (!defined ($session))

{

	die "Croaking: $error";

}

my %partitions;

my $stor_id;

$stor_id = get_by_regex ($session, $hrStorageType, "1.3.6.1.2.1.25.2.1.(3|2)");

%partitions = ();

foreach my $id (keys %$stor_id)

{

	my $part = get_single ($session, $hrStorageDesc . $id);

	$partitions{$part}{storage} = $id;

	$partitions{$part}{extinfo} = $part;

	$stor_id->{$id} = $part;

}

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

{

	print "host_name $host\n";

	print "graph_title Windows memory usage\n";

	print "graph_args -l 0 --base 1024\n";

	print "graph_vlabel Bytes\n";

	print "graph_category system\n";

	print "graph_info This graph shows Windows memory usage in bytes.\n";

	foreach my $part (keys %partitions)

	{

		print (&get_name_by_mp ($part), ".label $part Usage\n");

#		print (&get_name_by_mp ($part), ".warning 92\n");

#		print (&get_name_by_mp ($part), ".critical 98\n");

		print (&get_name_by_mp ($part) . "_s", ".label $part Size\n");

		print (&get_name_by_mp ($part) . "_s", ".graph no\n");

	}

	print "pused.label In use by programs\n";

	print "pused.draw AREA\n";

	exit 0;

}

foreach my $storage (keys %$stor_id)

{

    $partitions{$stor_id->{$storage}}{storage} = $storage;

    $partitions{$stor_id->{$storage}}{size}    = get_single ($session, $hrStorageSize . $storage);

    $partitions{$stor_id->{$storage}}{unit}    = get_single ($session, $hrStorageUnit . $storage);

    $partitions{$stor_id->{$storage}}{used}    = get_single ($session, $hrStorageUsed . $storage);

}

foreach my $part (keys %partitions)

{

    print (&get_name_by_mp ($part), ".value ", $partitions{$part}{used}*$partitions{$part}{unit}, "\n");

    print (&get_name_by_mp ($part) . "_s", ".value ", $partitions{$part}{size}*$partitions{$part}{unit}, "\n");

}

my $memsize = &get_single($session, "1.3.6.1.2.1.25.2.2.0") * 1024;

my $processes = get_by_regex($session, $hrSWRunPerfMem, "[1-9]");

# the values

my $memtotal = 0;

while (my ($pid, $mem) = each(%$processes)) {

    $memtotal += $mem;

}

$memtotal*=1024;

printf "pused.value $memtotal\n";

sub get_single

{

	my $handle = shift;

	my $oid    = shift;

	print "# Getting single $oid..." if $DEBUG;

	$response = $handle->get_request ($oid);

	if (!defined $response->{$oid})

	{

	    print "undef\n" if $DEBUG;

	    return undef;

	}

	else

	{

	    print "\"$response->{$oid}\"\n" if $DEBUG;

	    return $response->{$oid};

	}

}

sub get_by_regex

{

	my $handle = shift;

	my $oid    = shift;

	my $regex  = shift;

	my $result = {};

	my $num    = 0;

	my $ret    = $oid . "0";

	my $response;

	print "# Starting browse of $oid...\n" if $DEBUG;

	while (1)

	{

		if ($num == 0)

		{

			print "# Checking for $ret...\n" if $DEBUG;

			$response = $handle->get_request ($ret);

		}

		if ($num or !defined $response)

		{

			print "# Checking for sibling of $ret...\n" if $DEBUG;

			$response = $handle->get_next_request ($ret);

		}

		if (!$response)

		{

			return undef;

		}

		my @keys = keys %$response;

		$ret = $keys[0];

		print "# Analyzing $ret (compared to $oid)...\n" if $DEBUG;

		last unless ($ret =~ /^$oid/);

		$num++;

		next unless ($response->{$ret} =~ /$regex/);

		@keys = split (/\./, $ret);

		$result->{$keys[-1]} = ($1) ? $1 : $response->{$ret};

		print "# Index $num: ", $keys[-1], " (", $response->{$ret}, ")\n" if $DEBUG;

	};

	return $result;

}

sub get_name_by_mp

{

    my $mp = shift;

    $mp =~ s/[^a-z0-9_]/_/gi;

    $mp =~ tr/A-Z/a-z/;

    return "p" . $mp;

}