1#!@@PERL@@ -w
2# -*- perl -*-
3# vim: ft=perl
4#
5# Copyright (C) 2006 Lars Strand
6#
7# Munin plugin to monitor swap usage by use of SNMP.
8# Based on the snmp__df plugin
9#
10# This program is free software; you can redistribute it and/or
11# modify it under the terms of the GNU General Public License
12# as published by the Free Software Foundation; version 2 dated June,
13# 1991.
14#
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with this program; if not, write to the Free Software
22# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23#
24# $Log$
25#
26#%# family=snmpauto
27#%# capabilities=snmpconf
28
29use strict;
30use Munin::Plugin::SNMP;
31
32
33my $response;
34
35if (defined $ARGV[0] and $ARGV[0] eq "snmpconf") {
36    # HOST-RESOURCES-MIB::hrStorageType
37    # HOST-RESOURCES-TYPES::hrStorageVirtualMemory
38    print "require 1.3.6.1.2.1.25.2.3.1.2. 1.3.6.1.2.1.25.2.1.3\n";
39    exit 0;
40}
41
42my $session = Munin::Plugin::SNMP->session();
43
44my $hrStorage = "1.3.6.1.2.1.25.2.";
45my $hrStorageVirtualMemory = "1.3.6.1.2.1.25.2.1.3";
46my $hrStorageSize = "1.3.6.1.2.1.25.2.3.1.5.";
47my $hrStorageUsed = "1.3.6.1.2.1.25.2.3.1.6.";
48
49my $swap_d = $session->get_by_regex($hrStorage, $hrStorageVirtualMemory);
50
51my $swapsize = 0;
52my $swapused = 0;
53
54foreach my $swap (keys %$swap_d) {
55    $swapsize += $session->get_single($hrStorageSize . $swap);
56    $swapused += $session->get_single($hrStorageUsed . $swap);
57}
58
59if (defined $ARGV[0] and $ARGV[0] eq "config") {
60    my ($host) = Munin::Plugin::SNMP->config_session();
61    print "host_name $host\n" unless $host eq 'localhost';
62    print "graph_title Virtual memory usage\n";
63    if ($swapsize > 0) {
64	print "graph_args -l 0 --base 1024 --upper-limit $swapsize\n";
65    } else {
66	print "graph_args -l 0 --base 1024\n";
67    }
68    print "graph_vlabel Bytes\n";
69    print "graph_category disk\n";
70    print "graph_info This graph shows swap usage in bytes.\n";
71    print "swap.label swap\n";
72    print "swap.type DERIVE\n";
73    print "swap.min 0\n";
74    exit 0;
75}
76
77print "swap.value $swapused\n";
78
79