#!/usr/bin/perl -w # # Copyright (C) 2009 Branislav Bozgai # # Munin plugin to monitor ZyXel USG series routers RAM utilization. # Based on snmp__if_ 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. #%# 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 "require 1.3.6.1.4.1.890.1.6.22.1.2.0 \n"; exit 0; } if ($0 =~ /^(?:|.*\/)snmp_zyxel_usg_([^_]+)_ram$/) { $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 $sysRAMUsage = "1.3.6.1.4.1.890.1.6.22.1.2.0"; my ($session, $error) = Net::SNMP->session( -hostname => $host, -community => $community, -port => $port ); if (!defined ($session)) { die "Croaking: $error"; } if ($ARGV[0] and $ARGV[0] eq "config") { print "host_name $host\n"; if (!defined ($response = $session->get_request($sysRAMUsage))) { die "Croaking: " . $session->error(); } print "graph_title RAM usage\n"; print "graph_category system\n"; print "graph_args --base 1000 -r --lower-limit 0 --upper-limit 100\n"; print "graph_vlabel %\n"; print "graph_scale no\n"; print "graph_period second\n"; print "graph_info RAM usage\n"; print "sysRAMUsage.label RAM Usage\n"; print "sysRAMUsage.draw AREA\n"; exit 0; } if (defined ($response = $session->get_request($sysRAMUsage))) { print "sysRAMUsage.value ", $response->{$sysRAMUsage}, "\n"; } else { print "sysRAMUsage.value U\n"; } # vim:syntax=perl