/usr/share/munin/plugins/snmp__swap is in munin-node 1.4.6-3ubuntu3.4.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | #!/usr/bin/perl -w
# -*- perl -*-
#
# Copyright (C) 2006 Lars Strand
#
# Munin plugin to monitor swap usage by use of SNMP.
# Based on the snmp__df plugin
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# $Log$
#
#%# family=snmpauto
#%# capabilities=snmpconf
use strict;
use Munin::Plugin::SNMP;
my $DEBUG = $ENV{MUNIN_DEBUG};
my $response;
if (defined $ARGV[0] and $ARGV[0] eq "snmpconf") {
# HOST-RESOURCES-MIB::hrStorage
# HOST-RESOURCES-TYPES::hrStorageVirtualMemory
print "require 1.3.6.1.2.1.25.2. 1.3.6.1.2.1.25.2.1.3\n";
exit 0;
}
my $session = Munin::Plugin::SNMP->session();
my $hrStorage = "1.3.6.1.2.1.25.2.";
my $hrStorageVirtualMemory = "1.3.6.1.2.1.25.2.1.3";
my $hrStorageSize = "1.3.6.1.2.1.25.2.3.1.5.";
my $hrStorageUsed = "1.3.6.1.2.1.25.2.3.1.6.";
my $swap_d = $session->get_by_regex($hrStorage, $hrStorageVirtualMemory);
my $swapsize = 0;
my $swapused = 0;
foreach my $swap (keys %$swap_d) {
$swapsize += $session->get_single($hrStorageSize . $swap);
$swapused += $session->get_single($hrStorageUsed . $swap);
}
if (defined $ARGV[0] and $ARGV[0] eq "config") {
my ($host) = Munin::Plugin::SNMP->config_session();
print "host_name $host\n" unless $host eq 'localhost';
print "graph_title Virtual memory usage\n";
if ($swapsize > 0) {
print "graph_args -l 0 --base 1024 --upper-limit $swapsize\n";
} else {
print "graph_args -l 0 --base 1024\n";
}
print "graph_vlabel Bytes\n";
print "graph_category disk\n";
print "graph_info This graph shows swap usage in bytes.\n";
print "swap.label swap\n";
print "swap.type DERIVE\n";
print "swap.min 0\n";
exit 0;
}
print "swap.value $swapused\n";
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