Initial version

plugins/other/snmp__cpu

@@ -0,0 +1,107 @@
+#!/usr/bin/perl -w
+#
+# Copyright (C) 2006 Lars Strand
+#
+# Munin plugin to monitor CPU-load by use of SNMP.
+# Based on 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+# $Log$
+#
+#
+#
+#%# family=snmpauto
+#%# capabilities=snmpconf
+
+use strict;
+use Net::SNMP;
+
+my $DEBUG = 0;
+
+my $host      = $ENV{host}      || undef;
+my $port      = $ENV{port}      || 161;
+my $community = $ENV{community} || "public";
+
+my $response;
+
+if (defined $ARGV[0] and $ARGV[0] eq "snmpconf")
+{
+    print "index 1.3.6.1.2.1.25.3.3.1.2.\n";
+    print "require 1.3.6.1.2.1.25.3.3.1.2.1\n"; # CPU #1
+    exit 0;
+}
+
+if ($0 =~ /^(?:|.*\/)snmp_([^_]+)_cpu$/)
+{
+    $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";
+}
+
+# CPUs
+my $hrProcessorLoad = "1.3.6.1.2.1.25.3.3.1.2.";
+$response = $session->get_table($hrProcessorLoad);
+
+if (!defined ($response))
+{
+    die "Croaking: $error";
+}
+
+if (defined $ARGV[0] and $ARGV[0] eq "config")
+{
+    print "host_name $host\n";
+    print "graph_title CPU usage (in %)
+graph_category system
+graph_args --upper-limit 100 -l 0 
+graph_vlabel % 
+graph_info This graph shows the CPU load on the system.
+";
+    foreach my $cpuoid (keys %$response) {
+	my @oid = split(/\./, $cpuoid);
+	my $cpu = pop @oid;
+	print "cpu$cpu.label CPU $cpu\n";
+	print "cpu$cpu.info CPU load on CPU $cpu\n";
+    }
+    exit 0;
+}
+
+# the values
+while (my ($cpuoid, $load) = each(%$response)) {
+    my @oid = split(/\./, $cpuoid);
+    my $cpu = pop @oid;
+    print "cpu$cpu.value $load\n";
+}
+