1 #!/usr/bin/perl -w
2 #
3 # check_ifoperstatus.pl - nagios plugin
4 #
5 #
6 #
7 #
8 # Copyright (C) 2000 Christoph Kron
9 #
10 # This program is free software; you can redistribute it and/or
11 # modify it under the terms of the GNU General Public License
12 # as published by the Free Software Foundation; either version 2
13 # of the License, or (at your option) any later version.
14 #
15 # This program is distributed in the hope that it will be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 # GNU General Public License for more details.
19 #
20 # You should have received a copy of the GNU General Public License
21 # along with this program; if not, write to the Free Software
22 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 #
24 #
25 # Report bugs to: ck@zet.net
26 #
27 # 11.01.2000 Version 1.0
29 use strict;
31 use Net::SNMP;
32 use Getopt::Long;
33 &Getopt::Long::config('auto_abbrev');
36 my $status;
37 my $TIMEOUT = 15;
39 my %ERRORS = ('UNKNOWN' , '-1',
40 'OK' , '0',
41 'WARNING', '1',
42 'CRITICAL', '2');
44 my %ifOperStatus = ('1','up',
45 '2','down',
46 '3','testing',
47 '4','unknown',
48 '5','dormant',
49 '6','notPresent');
51 my $state = "UNKNOWN";
52 my $answer = "";
53 my $snmpkey = 1;
54 my $community = "public";
55 my $port = 161;
56 my @snmpoids;
57 my $snmpIfOperStatus;
58 my $snmpLocIfDescr;
59 my $hostname;
60 my $session;
61 my $error;
62 my $response;
65 sub usage {
66 printf "\nMissing arguments!\n";
67 printf "\n";
68 printf "Perl Check IfOperStatus plugin for Nagios\n";
69 printf "checks operational status of specified interface\n";
70 printf "usage: \n";
71 printf "ifoperstatus.pl -k <IF_KEY> -c <READCOMMUNITY> -p <PORT> <HOSTNAME>";
72 printf "\nCopyright (C) 2000 Christoph Kron\n";
73 printf "check_ifoperstatus.pl comes with ABSOLUTELY NO WARRANTY\n";
74 printf "This programm is licensed under the terms of the ";
75 printf "GNU General Public License\n(check source code for details)\n";
76 printf "\n\n";
77 exit $ERRORS{"UNKNOWN"};
78 }
80 # Just in case of problems, let's not hang Nagios
81 $SIG{'ALRM'} = sub {
82 print ("ERROR: No snmp response from $hostname (alarm)\n");
83 exit $ERRORS{"UNKNOWN"};
84 };
85 alarm($TIMEOUT);
88 $status = GetOptions("key=i",\$snmpkey,
89 "community=s",\$community,
90 "port=i",\$port);
91 if ($status == 0)
92 {
93 &usage;
94 }
96 #shift;
97 $hostname = shift || &usage;
99 ($session, $error) = Net::SNMP->session(
100 -hostname => $hostname,
101 -community => $community,
102 -port => $port
103 );
105 if (!defined($session)) {
106 $state='UNKNOWN';
107 $answer=$error;
108 print ("$state: $answer");
109 exit $ERRORS{$state};
110 }
112 $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8' . "." . $snmpkey;
113 $snmpLocIfDescr = '1.3.6.1.4.1.9.2.2.1.1.28' . "." . $snmpkey;
116 push(@snmpoids,$snmpIfOperStatus);
117 push(@snmpoids,$snmpLocIfDescr);
119 if (!defined($response = $session->get_request(@snmpoids))) {
120 $answer=$session->error;
121 $session->close;
122 $state = 'CRITICAL';
123 print ("$state: $answer,$community,$snmpkey");
124 exit $ERRORS{$state};
125 }
127 $answer = sprintf("host '%s',%s(%s) is %s\n",
128 $hostname,
129 $response->{$snmpLocIfDescr},
130 $snmpkey,
131 $ifOperStatus{$response->{$snmpIfOperStatus}}
132 );
134 $session->close;
136 if ( $response->{$snmpIfOperStatus} == 1 ) {
137 $state = 'OK';
138 }
139 else {
140 $state = 'CRITICAL';
141 }
143 print ("$state: $answer");
144 exit $ERRORS{$state};