/usr/share/munin/plugins/snmp__load is in munin-node 1.4.6-3ubuntu3.
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 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | #!/usr/bin/perl -w
# -*- perl -*-
=head1 NAME
snmp__load - Plugin to monitor load of a remote server via SNMP
=head1 CONFIGURATION
The following environment variables are used
host - SNMP hostname to probe (default undef)
port - SNMP port to use (default 161)
community - SNMP community string (default "public")
interface - (default undef)
=head1 AUTHORS
Copyright (C) 2004 Jimmy Olsen, Dagfinn Ilmari Mannsaaker
=head1 LICENSE
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.
=head1 MAGIC MARKERS
#%# family=snmpauto
#%# capabilities=snmpconf
=cut
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 "require 1.3.6.1.4.1.2021.10.1.3.2 [0-9]\n"; # Number
exit 0;
}
if ($0 =~ /^(?:|.*\/)snmp_([^_]+)_load$/)
{
$host = $1;
if ($host =~ /^([^:]+):(\d+)$/)
{
$host = $1;
$port = $2;
}
}
elsif (!defined($host))
{
print "# Debug: $0 -- $1\n" if $DEBUG;
die "# Error: couldn't understand what I'm supposed to monitor.";
}
my ($session, $error) = Net::SNMP->session(
-hostname => $host,
-community => $community,
-port => $port
);
if (!defined ($session))
{
die "Croaking: $error";
}
if (defined $ARGV[0] and $ARGV[0] eq "config")
{
print "host_name $host\n" unless $host eq 'localhost';
print "graph_title Load average
graph_args --base 1000 -l 0
graph_vlabel load
graph_category system
graph_info This graph shows the load average on the host. Load average is a rough way of estimating how hard the machine works. Optimally, a load average should be equal to or lower than the number of CPUs on the machine.
load.label load
load.info The load average itself. This number is an average of the last 5 minutes.
load.draw LINE2
";
exit 0;
}
print "load.value ", &get_single ($session, "1.3.6.1.4.1.2021.10.1.3.2"), "\n";
sub get_single
{
my $handle = shift;
my $oid = shift;
print "# Getting single $oid...\n" if $DEBUG;
$response = $handle->get_request ($oid);
if (!defined $response->{$oid})
{
return undef;
}
else
{
return $response->{$oid};
}
}
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