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authorHolger Weiss <holger@zedat.fu-berlin.de>2013-09-29 22:03:24 (GMT)
committerHolger Weiss <holger@zedat.fu-berlin.de>2013-09-29 22:03:24 (GMT)
commit0b6423f9c99d9edf8c96fefd0f6c453859395aa1 (patch)
tree1c2b6b21704a294940f87c7892676998d8371707 /web/attachments/302952-check_ifstatus
downloadsite-0b6423f9c99d9edf8c96fefd0f6c453859395aa1.tar.gz
Import Nagios Plugins site
Import the Nagios Plugins web site, Cronjobs, infrastructure scripts, and configuration files.
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1#! /opt/coolstack/bin/perl -w
2# vim:foldmethod=syntax:tabstop=4:shiftwidth=4
3#
4# Matthew Martin, Tuesday August 14, 2007
5# Problems with check_ifstatus.pl
6# 1) "No response from remote host" should be unknown, not critical, right?
7# 2) Serial link "dormant" should be critical, not okay
8# 3) dormant, excluded and unused interfaces are not correctly counted
9# 4) add some default exclusions
10#
11# check_ifstatus.pl - nagios plugin
12#
13#
14# Copyright (C) 2000 Christoph Kron
15# Modified 5/2002 to conform to updated Nagios Plugin Guidelines (S. Ghosh)
16# Added -x option (4/2003)
17# Added -u option (4/2003)
18# Added -M option (10/2003)
19# Added SNMPv3 support (10/2003)
20#
21# This program is free software; you can redistribute it and/or
22# modify it under the terms of the GNU General Public License
23# as published by the Free Software Foundation; either version 2
24# of the License, or (at your option) any later version.
25#
26# This program is distributed in the hope that it will be useful,
27# but WITHOUT ANY WARRANTY; without even the implied warranty of
28# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29# GNU General Public License for more details.
30#
31# You should have received a copy of the GNU General Public License
32# along with this program; if not, write to the Free Software
33# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
34#
35#
36# Report bugs to: ck@zet.net, nagiosplug-help@lists.sf.net
37#
38# 11.01.2000 Version 1.0
39#
40# $Id: check_ifstatus.pl 884 2004-08-18 19:51:35Z tonvoon $
41
42use POSIX;
43use strict;
44use lib "/opt/nagios-3.0.5/libexec" ;
45use utils qw($TIMEOUT %ERRORS &print_revision &support);
46
47use Net::SNMP;
48use Getopt::Long;
49Getopt::Long::Configure('bundling');
50
51my $PROGNAME = "check_ifstatus";
52
53sub print_help ();
54sub usage ();
55sub process_arguments ();
56
57
58my $status;
59my %ifOperStatus = ('1','up',
60 '2','down',
61 '3','testing',
62 '4','unknown',
63 '5','dormant',
64 '6','notPresent',
65 '7','lowerLayerDown'); # down due to the state of lower layer interface(s));
66
67my $timeout ;
68my $state = "UNKNOWN";
69my $answer = "";
70my $snmpkey=0;
71my $snmpoid=0;
72my $key=0;
73my $community = "public";
74my $maxmsgsize = 1472 ; # Net::SNMP default is 1472
75my ($seclevel, $authproto, $secname, $authpass, $privpass, $auth, $priv, $context);
76my $port = 161;
77my @snmpoids;
78my $snmpIfAdminStatus = '1.3.6.1.2.1.2.2.1.7';
79my $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2';
80my $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8';
81my $snmpIfName = '1.3.6.1.2.1.31.1.1.1.1';
82my $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18';
83my $snmpLocIfDescr = '1.3.6.1.4.1.9.2.2.1.1.28';
84my $snmpIfType = '1.3.6.1.2.1.2.2.1.3';
85my $hostname;
86my $session;
87my $error;
88my $response;
89my %ifStatus;
90my $ifup =0 ;
91my $ifdown =0;
92my $ifdormant = 0;
93my $ifexclude = 0 ;
94my $ifunused = 0;
95my $ifmessage = "";
96my $snmp_version = 1;
97my $ifXTable;
98my $opt_h ;
99my $opt_V ;
100my $opt_u;
101my $opt_x ;
102my %excluded ;
103my @unused_ports ;
104
105# Just in case of problems, let's not hang Nagios
106$SIG{'ALRM'} = sub {
107 print ("ERROR: No snmp response from $hostname (alarm timeout)\n");
108 exit $ERRORS{"UNKNOWN"};
109};
110
111
112#Option checking
113$status = process_arguments();
114
115if ($status != 0)
116{
117 print_help() ;
118 exit $ERRORS{'OK'};
119}
120
121
122alarm($timeout);
123
124push(@snmpoids,$snmpIfOperStatus);
125push(@snmpoids,$snmpIfAdminStatus);
126push(@snmpoids,$snmpIfDescr);
127push(@snmpoids,$snmpIfType);
128push(@snmpoids,$snmpIfName) if ( defined $ifXTable);
129push(@snmpoids,$snmpIfAlias) if ( defined $ifXTable);
130
131
132
133
134foreach $snmpoid (@snmpoids) {
135
136 if (!defined($response = $session->get_table($snmpoid))) {
137 $answer=$session->error;
138 $session->close;
139 # mgmart6. Tuesday August 14, 2007
140 # I think a SNMP error should give UNKNOWN, not CRITICAL
141 #$state = 'CRITICAL';
142 $state = 'UNKNOWN';
143 if ( ( $snmpoid =~ $snmpIfName ) && defined $ifXTable ) {
144 print ("$state: Device does not support ifTable - try without -I option\n");
145 }else{
146 print ("$state: $answer for $snmpoid with snmp version $snmp_version\n");
147 }
148 exit $ERRORS{$state};
149 }
150
151 foreach $snmpkey (keys %{$response}) {
152 $snmpkey =~ /.*\.(\d+)$/;
153 $key = $1;
154 $ifStatus{$key}{$snmpoid} = $response->{$snmpkey};
155 }
156}
157
158
159$session->close;
160
161alarm(0);
162
163# mgmart6. This script cannot tell that specific logical interfaces are
164# associated with their phys IF so it checks them all.
165foreach $key (keys %ifStatus) {
166
167 # Skip interfaces flagged with -u (--unused_ports)
168 # "A comma separated list of ifIndex values that should be excluded"
169 if (!defined($ifStatus{$key}{'notInUse'})) {
170 # check only if interface is administratively up
171 if ($ifStatus{$key}{$snmpIfAdminStatus} == 1 ) {
172
173 # check only if interface type is not listed in %excluded
174 if (!defined $excluded{$ifStatus{$key}{$snmpIfType}} ) {
175 if ($ifStatus{$key}{$snmpIfOperStatus} == 1 ) { $ifup++ ;}
176 if ($ifStatus{$key}{$snmpIfOperStatus} == 2 ) {
177 $ifdown++ ;
178 if (defined $ifXTable) {
179 $ifmessage .= sprintf("%s: down -> %s<BR>",
180 $ifStatus{$key}{$snmpIfName},
181 $ifStatus{$key}{$snmpIfAlias});
182 }else{
183 $ifmessage .= sprintf("%s: down <BR>",
184 $ifStatus{$key}{$snmpIfDescr});
185 }
186 }
187 if ($ifStatus{$key}{$snmpIfOperStatus} == 5 ) { $ifdormant++ ;}
188 # Matthew Martin Interface is listed in %excluded
189 } else {
190 $ifexclude++;
191 }
192 # mgmart6 If not administratively up, mark as unused.
193 } elsif ($ifStatus{$key}{$snmpIfAdminStatus} == 2 ) {
194 $ifunused++;
195 }
196 }else{
197 # mgmart6. Original line: $ifunused++;
198 # actually matches the flag
199 # -u (--unused_ports) A comma separated list of ifIndex values that should be excluded
200 # They should be marked as excluded, not unused.
201 $ifexclude++;
202 }
203}
204
205# mgmart6
206# The original has dormant serial interfaces return status of "OK".
207# A dormant serial connection should be CRITICAL, right?
208# I changed the following line to address this:
209#if ($ifdown > 0) {
210if (($ifdown > 0) || ($ifdormant > 0)) {
211 $state = 'CRITICAL';
212 $answer = sprintf("host '%s', interfaces up: %d, down: %d, dormant: %d, excluded: %d, unused: %d<BR>",
213 $hostname,
214 $ifup,
215 $ifdown,
216 $ifdormant,
217 $ifexclude,
218 $ifunused);
219 $answer = $answer . $ifmessage . "\n";
220} else {
221 $state = 'OK';
222 $answer = sprintf("host '%s', interfaces up: %d, down: %d, dormant: %d, excluded: %d, unused: %d",
223 $hostname,
224 $ifup,
225 $ifdown,
226 $ifdormant,
227 $ifexclude,
228 $ifunused);
229}
230my $perfdata = sprintf("up=%d,down=%d,dormant=%d,excluded=%d,unused=%d",$ifup,$ifdown,$ifdormant,$ifexclude,$ifunused);
231print ("$state: $answer |$perfdata\n");
232exit $ERRORS{$state};
233
234
235sub usage (){
236 printf "\nMissing arguments!\n";
237 printf "\n";
238 printf "check_ifstatus -C <READCOMMUNITY> -p <PORT> -H <HOSTNAME>\n";
239 printf "Copyright (C) 2000 Christoph Kron\n";
240 printf "Updates 5/2002 Subhendu Ghosh\n";
241 printf "\n\n";
242 support();
243 exit $ERRORS{"UNKNOWN"};
244}
245
246sub print_help (){
247 printf "check_ifstatus plugin for Nagios monitors operational \n";
248 printf "status of each network interface on the target host\n";
249 printf "\nUsage:\n";
250 printf " -H (--hostname) Hostname to query - (required)\n";
251 printf " -C (--community) SNMP read community (defaults to public,\n";
252 printf " used with SNMP v1 and v2c\n";
253 printf " -v (--snmp_version) 1 for SNMP v1 (default)\n";
254 printf " 2 for SNMP v2c\n";
255 printf " SNMP v2c will use get_bulk for less overhead\n";
256 printf " 3 for SNMPv3 (requires -U option)";
257 printf " -p (--port) SNMP port (default 161)\n";
258 printf " -I (--ifmib) Agent supports IFMIB ifXTable. For Cisco - this will provide\n";
259 printf " the descriptive name. Do not use if you don't know what this is. \n";
260 printf " -x (--exclude) A comma separated list of ifType values that should be excluded \n";
261 printf " from the report (default for an empty list is PPP(23).\n";
262 printf " -u (--unused_ports) A comma separated list of ifIndex values that should be excluded \n";
263 printf " from the report (default is an empty exclusion list).\n";
264 printf " See the IANAifType-MIB for a list of interface types.\n";
265 printf " -L (--seclevel) choice of \"noAuthNoPriv\", \"authNoPriv\", or \"authPriv\"\n";
266 printf " -U (--secname) username for SNMPv3 context\n";
267 printf " -c (--context) SNMPv3 context name (default is empty string)";
268 printf " -A (--authpass) authentication password (cleartext ascii or localized key\n";
269 printf " in hex with 0x prefix generated by using \"snmpkey\" utility\n";
270 printf " auth password and authEngineID\n";
271 printf " -a (--authproto) Authentication protocol ( MD5 or SHA1)\n";
272 printf " -X (--privpass) privacy password (cleartext ascii or localized key\n";
273 printf " in hex with 0x prefix generated by using \"snmpkey\" utility\n";
274 printf " privacy password and authEngineID\n";
275 printf " -M (--maxmsgsize) Max message size - usefull only for v1 or v2c\n";
276 printf " -t (--timeout) seconds before the plugin times out (default=$TIMEOUT)\n";
277 printf " -V (--version) Plugin version\n";
278 printf " -h (--help) usage help \n\n";
279 print_revision($PROGNAME, '$Revision: 884 $');
280
281}
282
283sub process_arguments() {
284 $status = GetOptions(
285 "V" => \$opt_V, "version" => \$opt_V,
286 "h" => \$opt_h, "help" => \$opt_h,
287 "v=i" => \$snmp_version, "snmp_version=i" => \$snmp_version,
288 "C=s" => \$community,"community=s" => \$community,
289 "L=s" => \$seclevel, "seclevel=s" => \$seclevel,
290 "a=s" => \$authproto, "authproto=s" => \$authproto,
291 "U=s" => \$secname, "secname=s" => \$secname,
292 "A=s" => \$authpass, "authpass=s" => \$authpass,
293 "X=s" => \$privpass, "privpass=s" => \$privpass,
294 "c=s" => \$context, "context=s" => \$context,
295 "p=i" =>\$port, "port=i" => \$port,
296 "H=s" => \$hostname, "hostname=s" => \$hostname,
297 "I" => \$ifXTable, "ifmib" => \$ifXTable,
298 "x:s" => \$opt_x, "exclude:s" => \$opt_x,
299 "u=s" => \$opt_u, "unused_ports=s" => \$opt_u,
300 "M=i" => \$maxmsgsize, "maxmsgsize=i" => \$maxmsgsize,
301 "t=i" => \$timeout, "timeout=i" => \$timeout,
302 );
303
304 if ($status == 0){
305 print_help() ;
306 exit $ERRORS{'OK'};
307 }
308 if ($opt_V) {
309 print_revision($PROGNAME,'$Revision: 884 $ ');
310 exit $ERRORS{'OK'};
311 }
312
313 if ($opt_h) {
314 print_help();
315 exit $ERRORS{'OK'};
316 }
317
318 unless (defined $timeout) {
319 $timeout = $TIMEOUT;
320 }
321
322 if ($snmp_version =~ /3/ ) {
323 # Must define a security level even though default is noAuthNoPriv
324 # v3 requires a security username
325 if (defined $seclevel && defined $secname) {
326
327 # Must define a security level even though defualt is noAuthNoPriv
328 unless ($seclevel eq ('noAuthNoPriv' || 'authNoPriv' || 'authPriv' ) ) {
329 usage();
330 exit $ERRORS{"UNKNOWN"};
331 }
332
333 # Authentication wanted
334 if ($seclevel eq ('authNoPriv' || 'authPriv') ) {
335
336 unless ($authproto eq ('MD5' || 'SHA1') ) {
337 usage();
338 exit $ERRORS{"UNKNOWN"};
339 }
340
341 if ( !defined $authpass) {
342 usage();
343 exit $ERRORS{"UNKNOWN"};
344 }else{
345 if ($authpass =~ /^0x/ ) {
346 $auth = "-authkey => $authpass" ;
347 }else{
348 $auth = "-authpassword => $authpass";
349 }
350 }
351
352 }
353
354 # Privacy (DES encryption) wanted
355 if ($seclevel eq 'authPriv' ) {
356 if (! defined $privpass) {
357 usage();
358 exit $ERRORS{"UNKNOWN"};
359 }else{
360 if ($privpass =~ /^0x/){
361 $priv = "-privkey => $privpass";
362 }else{
363 $priv = "-privpassword => $privpass";
364 }
365 }
366 }
367
368 # Context name defined or default
369
370 unless ( defined $context) {
371 $context = "";
372 }
373
374
375
376 }else {
377 usage();
378 exit $ERRORS{'UNKNOWN'}; ;
379 }
380 } # end snmpv3
381
382 # for snmp v1 & v2c we default to community = "public"
383
384 # Excluded interfaces types (ifType) (backup interfaces, dial-on demand interfaces, PPP interfaces
385 if (defined $opt_x) {
386 my @x = split(/,/, $opt_x);
387 if ( @x) {
388 foreach $key (@x){
389 $excluded{$key} = 1;
390 }
391 }
392 # Matthew Martin In the original this else was nested wrong and never matched
393 } else {
394 $excluded{23} = 1; # default PPP(23) if empty list - note (AIX seems to think PPP is 22 according to a post)
395 $excluded{24} = 1; # mgmart6, Tuesday August 14, 2007, Nokia, ifDescr.6 = loop0c0 Software Loopback Layer -- ifType.6 = softwareLoopback(24) (taken from a Nokia IP330)
396 $excluded{25} = 1; # mgmart6, Tuesday August 14, 2007, Nokia, ifDescr.1 = pppoe0 Ethernet Layer -- ifType.1 = eon(25) (from a Nokia IP350)
397 }
398
399 # Excluded interface ports (ifIndex) - management reasons
400 if ($opt_u) {
401 @unused_ports = split(/,/,$opt_u);
402 foreach $key (@unused_ports) {
403 $ifStatus{$key}{'notInUse'}++ ;
404 }
405 }
406
407 if (! utils::is_hostname($hostname)){
408 usage();
409 exit $ERRORS{"UNKNOWN"};
410 }
411
412 # create SNMP session handle based on options passed.
413
414 if ( ! $snmp_version ) {
415 $snmp_version =1 ;
416 }else{
417 if ( $snmp_version =~ /[12]/ ) {
418
419 ($session, $error) = Net::SNMP->session(
420 -hostname => $hostname,
421 -community => $community,
422 -port => $port,
423 -version => $snmp_version,
424 -maxmsgsize => $maxmsgsize
425 );
426
427 if (!defined($session)) {
428 $state='UNKNOWN';
429 $answer=$error;
430 print ("$state: $answer");
431 exit $ERRORS{$state};
432 }
433
434
435 }elsif ( $snmp_version =~ /3/ ) {
436
437 if ($seclevel eq 'noAuthNoPriv') {
438 ($session, $error) = Net::SNMP->session(
439 -hostname => $hostname,
440 -port => $port,
441 -version => $snmp_version,
442 -username => $secname,
443 );
444
445 }elsif ( $seclevel eq 'authNoPriv' ) {
446 ($session, $error) = Net::SNMP->session(
447 -hostname => $hostname,
448 -port => $port,
449 -version => $snmp_version,
450 -username => $secname,
451 -authprotocol => $authproto,
452 $auth
453 );
454 }elsif ($seclevel eq 'authPriv' ) {
455 ($session, $error) = Net::SNMP->session(
456 -hostname => $hostname,
457 -port => $port,
458 -version => $snmp_version,
459 -username => $secname,
460 -authprotocol => $authproto,
461 $auth,
462 $priv
463 );
464 }
465
466
467 if (!defined($session)) {
468 $state='UNKNOWN';
469 $answer=$error;
470 print ("$state: $answer");
471 exit $ERRORS{$state};
472 }
473
474 }else{
475 $state='UNKNOWN';
476 print ("$state: No support for SNMP v$snmp_version yet\n");
477 exit $ERRORS{$state};
478 }
479}
480
481return $ERRORS{"OK"};
482
483}