Munin contributed plugins

#!/usr/bin/perl -w

#

# Copyright (C) 2008 François Borlet-Hote

#

# 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.

#

#

# $Log$

#

# Based on snmp_if from the Revision 1.18  2004/12/10 18:51:43 by jimmyo

#

# Revision 1.0  2008/05/29 16:10:00  fbh

# Created by fbh

#

#

#%# 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 $iface     = $ENV{interface} || undef;

my $version   = $ENV{version}   || "2c";

my $response;

if (defined $ARGV[0] and $ARGV[0] eq "snmpconf")

{

        print "number  1.3.6.1.2.1.2.1.0\n";

        print "index   1.3.6.1.2.1.2.2.1.1.\n";

        print "require 1.3.6.1.2.1.2.2.1.3. ^(6|23)\$\n"; # Type

        print "require 1.3.6.1.2.1.2.2.1.5. [1-9]\n"; # Speed

        exit 0;

}

if ($0 =~ /^(?:|.*\/)snmp_([^_]+)_ifX_(.+)$/)

{

        $host  = $1;

        $iface = $2;

        if ($host =~ /^([^:]+):(\d+)$/)

        {

                $host = $1;

                $port = $2;

        }

}

elsif (!defined($host))

{

        print "# Debug: $0 -- $1 -- $2\n" if $DEBUG;

        die "# Error: couldn't understand what I'm supposed to monitor.";

}

my $ifEntryDescr     = "1.3.6.1.2.1.2.2.1.2.$iface";

my $ifEntrySpeed     = "1.3.6.1.2.1.2.2.1.5.$iface";

my $ifEntryStatus    = "1.3.6.1.2.1.2.2.1.8.$iface";

my $ifEntryInOctets  = "1.3.6.1.2.1.31.1.1.1.6.$iface";

my $ifEntryOutOctets = "1.3.6.1.2.1.31.1.1.1.10.$iface";

my ($session, $error) = Net::SNMP->session(

                -hostname  => $host,

                -community => $community,

                -port      => $port,

                -version   => $version

        );

if (!defined ($session))

{

        die "Croaking: $error";

}

if ($ARGV[0] and $ARGV[0] eq "config")

{

        print "host_name $host\n";

        if (!defined ($response = $session->get_request($ifEntryDescr)))

        {

                die "Croaking: " . $session->error();

        }

        my $name = $response->{$ifEntryDescr};

        $name =~ s/[^\w\s]//g;

        my $warn = undef;

        my $max = 1000000000;

        if (defined ($response = $session->get_request($ifEntrySpeed)))

        {

                $max = $response->{$ifEntrySpeed};

                $warn = $response->{$ifEntrySpeed}*0.8;

        }

        if (length ($name) > 15)

        {

                print "graph_title Interface $iface traffic\n";

        }

        else

        {

                print "graph_title Interface $name traffic\n";

        }

        print "graph_order recv send\n";

        print "graph_args --base 1000\n";

        print "graph_vlabel bits in (-) / out (+) per \${graph_period}\n";

        print "graph_category network\n";

        print "graph_info This graph shows traffic for the \"$name\" network interface.\n";

        print "send.info Bits sent/received by this interface.\n";

        print "recv.label recv\n";

        print "recv.type DERIVE\n";

        print "recv.graph no\n";

        print "recv.cdef recv,8,*\n";

        print "recv.max ",$max,"\n";

        print "recv.min 0\n";

        print "recv.warn ", (-$warn), "\n" if defined $warn;

        print "send.label bps\n";

        print "send.type DERIVE\n";

        print "send.negative recv\n";

        print "send.cdef send,8,*\n";

        print "send.max ",$max,"\n";

        print "send.min 0\n";

        print "send.warn $warn\n" if defined $warn;

        exit 0;

}

my $status = 1;

if (defined ($response = $session->get_request($ifEntryStatus)))

{

        $status = $response->{$ifEntryStatus};

}

if ($status == 2)

{

        print "recv.value U\n";

        print "send.value U\n";

        exit 0;

}

if (defined ($response = $session->get_request($ifEntryInOctets)))

{

        print "recv.value ", $response->{$ifEntryInOctets}, "\n";

}

else

{

        print "recv.value U\n";

}

if (defined ($response = $session->get_request($ifEntryOutOctets)))

{

        print "send.value ", $response->{$ifEntryOutOctets}, "\n";

}

else

{

        print "send.value U\n";

}