#!/usr/bin/perl -w
# -*- perl -*-
# vim: ft=perl

=head1 NAME

snmp__cisco_sbs_cpu - Munin plugin to monitor CPU Usage on Cisco Small Business Switches.

=head1 APPLICABLE SYSTEMS

Cisco Small Business Switches (SBXXXX devices)

=head1 CONFIGURATION

As a rule SNMP plugins need site specific configuration.  The default
configuration (shown here) will only work on insecure sites/devices.

   [snmp_*]
        env.version 2
        env.community public

In general SNMP is not very secure at all unless you use SNMP version
3 which supports authentication and privacy (encryption).  But in any
case the community string for your devices should not be "public".

Please see 'perldoc Munin::Plugin::SNMP' for further configuration
information.

=head1 INTERPRETATION

CPU Percentage gives an idea of utilization of the device. High CPU
can indicate a configuration problem or overutilization of the device.

=head1 MAGIC MARKERS

  #%# family=snmpauto
  #%# capabilities=snmpconf

=head1 VERSION

  $Id$

=head1 BUGS

None known.

=head1 AUTHOR

Copyright (C) 2015 James DeVincentis

=head1 LICENSE

GPLv3.

=cut

use strict;
use Munin::Plugin::SNMP;

if (defined $ARGV[0] and $ARGV[0] eq 'snmpconf') {
        print "require 1.3.6.1.4.1.9.6.1.101.1.7.0 [0-9]\n";
        exit 0;
}

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 <<"EOF";
graph_title CPU Utilization
graph_args --base 1000 -l 0 -u 100
graph_vlabel CPU %
graph_category system
graph_info This graph shows the percentage of CPU used at different intervals. High CPU Utilization can indicate a configuration problem or overutilization of the device.
load5sec.label 5s
load5sec.info 5 Second CPU Utilization Average
load5sec.draw LINE1
load1min.label 1m
load1min.info 1 Minute CPU Utilization Average
load1min.draw LINE1
load5min.label 5m
load5min.info 5 Minute CPU Utilization Average
EOF
        exit 0;
}

my $session = Munin::Plugin::SNMP->session();
print "load5sec.value ", $session->get_single('1.3.6.1.4.1.9.6.1.101.1.7.0'), "\n";
print "load1min.value ", $session->get_single('1.3.6.1.4.1.9.6.1.101.1.8.0'), "\n";
print "load5min.value ", $session->get_single('1.3.6.1.4.1.9.6.1.101.1.9.0'), "\n";