108 lines
2.4 KiB
Plaintext
108 lines
2.4 KiB
Plaintext
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#!/usr/bin/perl -w
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#
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# Copyright (C) 2006 Lars Strand
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#
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# Munin plugin to monitor CPU-load by use of SNMP.
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# Based on snmp__df plugin.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; version 2 dated June,
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# 1991.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# $Log$
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#
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#
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#
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#%# family=snmpauto
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#%# capabilities=snmpconf
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use strict;
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use Net::SNMP;
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my $DEBUG = 0;
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my $host = $ENV{host} || undef;
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my $port = $ENV{port} || 161;
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my $community = $ENV{community} || "public";
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my $response;
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if (defined $ARGV[0] and $ARGV[0] eq "snmpconf")
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{
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print "index 1.3.6.1.2.1.25.3.3.1.2.\n";
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print "require 1.3.6.1.2.1.25.3.3.1.2.1\n"; # CPU #1
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exit 0;
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}
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if ($0 =~ /^(?:|.*\/)snmp_([^_]+)_cpu$/)
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{
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$host = $1;
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if ($host =~ /^([^:]+):(\d+)$/)
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{
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$host = $1;
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$port = $2;
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}
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}
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elsif (!defined($host))
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{
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print "# Debug: $0 -- $1\n" if $DEBUG;
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die "# Error: couldn't understand what I'm supposed to monitor.";
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}
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my ($session, $error) = Net::SNMP->session(
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-hostname => $host,
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-community => $community,
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-port => $port
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);
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if (!defined ($session))
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{
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die "Croaking: $error";
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}
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# CPUs
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my $hrProcessorLoad = "1.3.6.1.2.1.25.3.3.1.2.";
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$response = $session->get_table($hrProcessorLoad);
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if (!defined ($response))
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{
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die "Croaking: $error";
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}
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if (defined $ARGV[0] and $ARGV[0] eq "config")
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{
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print "host_name $host\n";
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print "graph_title CPU usage (in %)
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graph_category system
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graph_args --upper-limit 100 -l 0
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graph_vlabel %
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graph_info This graph shows the CPU load on the system.
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";
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foreach my $cpuoid (keys %$response) {
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my @oid = split(/\./, $cpuoid);
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my $cpu = pop @oid;
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print "cpu$cpu.label CPU $cpu\n";
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print "cpu$cpu.info CPU load on CPU $cpu\n";
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}
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exit 0;
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}
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# the values
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while (my ($cpuoid, $load) = each(%$response)) {
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my @oid = split(/\./, $cpuoid);
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my $cpu = pop @oid;
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print "cpu$cpu.value $load\n";
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}
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