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-rw-r--r--plugins-scripts/check_ifoperstatus.pl156
1 files changed, 128 insertions, 28 deletions
diff --git a/plugins-scripts/check_ifoperstatus.pl b/plugins-scripts/check_ifoperstatus.pl
index 4696467..b5d0bcd 100644
--- a/plugins-scripts/check_ifoperstatus.pl
+++ b/plugins-scripts/check_ifoperstatus.pl
@@ -2,7 +2,7 @@
2# 2#
3# check_ifoperstatus.pl - nagios plugin 3# check_ifoperstatus.pl - nagios plugin
4# 4#
5# Copyright (C) 2000 Christoph Kron 5# Copyright (C) 2000 Christoph Kron,
6# Modified 5/2002 to conform to updated Nagios Plugin Guidelines 6# Modified 5/2002 to conform to updated Nagios Plugin Guidelines
7# Added support for named interfaces per Valdimir Ivaschenko (S. Ghosh) 7# Added support for named interfaces per Valdimir Ivaschenko (S. Ghosh)
8# 8#
@@ -21,10 +21,16 @@
21# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 21# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22# 22#
23# 23#
24# Report bugs to: ck@zet.net, nagiosplug-help@lists.sf.net 24# Report bugs to: nagiosplug-help@lists.sourceforge.net
25# 25#
26# 11.01.2000 Version 1.0 26# 11.01.2000 Version 1.0
27# $Id$ 27# $Id$
28#
29# Patches from Guy Van Den Bergh to warn on ifadminstatus down interfaces
30# instead of critical.
31#
32# Primary MIB reference - RFC 2863
33
28 34
29use POSIX; 35use POSIX;
30use strict; 36use strict;
@@ -42,7 +48,8 @@ my %ifOperStatus = ('1','up',
42 '3','testing', 48 '3','testing',
43 '4','unknown', 49 '4','unknown',
44 '5','dormant', 50 '5','dormant',
45 '6','notPresent'); 51 '6','notPresent',
52 '7','lowerLayerDown'); # down due to the state of lower layer interface(s)
46 53
47my $state = "UNKNOWN"; 54my $state = "UNKNOWN";
48my $answer = ""; 55my $answer = "";
@@ -50,12 +57,16 @@ my $snmpkey = 0;
50my $community = "public"; 57my $community = "public";
51my $port = 161; 58my $port = 161;
52my @snmpoids; 59my @snmpoids;
53my $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2'; 60my $sysUptime = '1.3.6.1.2.1.1.3.0';
61my $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2';
62my $snmpIfAdminStatus = '1.3.6.1.2.1.2.2.1.7';
54my $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8'; 63my $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8';
55my $snmpIfName = '1.3.6.1.2.1.31.1.1.1.1'; 64my $snmpIfName = '1.3.6.1.2.1.31.1.1.1.1';
56my $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18'; 65my $snmpIfLastChange = '1.3.6.1.2.1.2.2.1.9';
57my $snmpLocIfDescr = '1.3.6.1.4.1.9.2.2.1.1.28'; 66my $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18';
67my $snmpLocIfDescr = '1.3.6.1.4.1.9.2.2.1.1.28';
58my $hostname; 68my $hostname;
69my $ifName;
59my $session; 70my $session;
60my $error; 71my $error;
61my $response; 72my $response;
@@ -65,6 +76,9 @@ my $opt_h ;
65my $opt_V ; 76my $opt_V ;
66my $ifdescr; 77my $ifdescr;
67my $key; 78my $key;
79my $lastc;
80my $dormantWarn;
81my $name;
68 82
69 83
70 84
@@ -76,6 +90,8 @@ $SIG{'ALRM'} = sub {
76#alarm($TIMEOUT); 90#alarm($TIMEOUT);
77 91
78 92
93### Validate Arguments
94
79$status = GetOptions( 95$status = GetOptions(
80 "V" => \$opt_V, "version" => \$opt_V, 96 "V" => \$opt_V, "version" => \$opt_V,
81 "h" => \$opt_h, "help" => \$opt_h, 97 "h" => \$opt_h, "help" => \$opt_h,
@@ -83,9 +99,12 @@ $status = GetOptions(
83 "C=s" =>\$community, "community=s" => \$community, 99 "C=s" =>\$community, "community=s" => \$community,
84 "k=i" =>\$snmpkey, "key=i",\$snmpkey, 100 "k=i" =>\$snmpkey, "key=i",\$snmpkey,
85 "d=s" =>\$ifdescr, "descr=s" => \$ifdescr, 101 "d=s" =>\$ifdescr, "descr=s" => \$ifdescr,
102 "l=s" => \$lastc, "lastchange=s" => \$lastc,
86 "p=i" =>\$port, "port=i",\$port, 103 "p=i" =>\$port, "port=i",\$port,
87 "H=s" => \$hostname, "hostname=s" => \$hostname, 104 "H=s" => \$hostname, "hostname=s" => \$hostname,
88 "I" => \$ifXTable, "ifmib" => \$ifXTable); 105 "I" => \$ifXTable, "ifmib" => \$ifXTable,
106 "n=s" => \$ifName, "name=s" => \$ifName,
107 "w=s" => \$dormantWarn, "warn=s" => \$dormantWarn );
89 108
90 109
91 110
@@ -111,6 +130,17 @@ if (! utils::is_hostname($hostname)){
111} 130}
112 131
113 132
133unless ($snmpkey > 0 || defined $ifdescr){
134 printf "Either a valid snmpkey key (-k) or a ifDescr (-d) must be provided)\n";
135 usage();
136 exit $ERRORS{"UNKNOWN"};
137}
138
139
140if (defined $name) {
141 $ifXTable=1;
142}
143
114if ( $snmp_version =~ /[12]/ ) { 144if ( $snmp_version =~ /[12]/ ) {
115 ($session, $error) = Net::SNMP->session( 145 ($session, $error) = Net::SNMP->session(
116 -hostname => $hostname, 146 -hostname => $hostname,
@@ -135,6 +165,12 @@ if ( $snmp_version =~ /[12]/ ) {
135 exit $ERRORS{$state}; 165 exit $ERRORS{$state};
136} 166}
137 167
168## End validation
169
170
171
172## map ifdescr to ifindex - should look at being able to cache this value
173
138if (defined $ifdescr) { 174if (defined $ifdescr) {
139 # escape "/" in ifdescr - very common in the Cisco world 175 # escape "/" in ifdescr - very common in the Cisco world
140 $ifdescr =~ s/\//\\\//g; 176 $ifdescr =~ s/\//\\\//g;
@@ -143,31 +179,32 @@ if (defined $ifdescr) {
143 # recommend use of SNMP v2 (get-bulk) 179 # recommend use of SNMP v2 (get-bulk)
144 if ($status==0) { 180 if ($status==0) {
145 $state = "UNKNOWN"; 181 $state = "UNKNOWN";
146 printf "$state: could not retrive ifIndex - $status-$snmpkey\n"; 182 printf "$state: could not retrive snmpkey - $status-$snmpkey\n";
147 $session->close; 183 $session->close;
148 exit $ERRORS{$state}; 184 exit $ERRORS{$state};
149 } 185 }
150} 186}
151if ( $snmpkey == 0 ) {
152 printf "ifIndex key cannot be 0\n";
153 usage();
154 exit $ERRORS{'UNKNOWN'};
155}
156 187
157 $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8' . "." . $snmpkey;
158 $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2' . "." . $snmpkey;
159 $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18' . "." . $snmpkey ;
160 188
189## Main function
190
191$snmpIfAdminStatus = $snmpIfAdminStatus . "." . $snmpkey;
192$snmpIfOperStatus = $snmpIfOperStatus . "." . $snmpkey;
193$snmpIfDescr = $snmpIfDescr . "." . $snmpkey;
194$snmpIfName = $snmpIfName . "." . $snmpkey ;
195$snmpIfAlias = $snmpIfAlias . "." . $snmpkey ;
161 196
197push(@snmpoids,$snmpIfAdminStatus);
162push(@snmpoids,$snmpIfOperStatus); 198push(@snmpoids,$snmpIfOperStatus);
163push(@snmpoids,$snmpIfDescr); 199push(@snmpoids,$snmpIfDescr);
200push(@snmpoids,$snmpIfName) if (defined $ifXTable) ;
164push(@snmpoids,$snmpIfAlias) if (defined $ifXTable) ; 201push(@snmpoids,$snmpIfAlias) if (defined $ifXTable) ;
165 202
166 if (!defined($response = $session->get_request(@snmpoids))) { 203 if (!defined($response = $session->get_request(@snmpoids))) {
167 $answer=$session->error; 204 $answer=$session->error;
168 $session->close; 205 $session->close;
169 $state = 'CRITICAL'; 206 $state = 'WARNING';
170 print ("$state: $answer for ifIndex $snmpkey\n"); 207 print ("$state: SNMP error: $answer\n");
171 exit $ERRORS{$state}; 208 exit $ERRORS{$state};
172 } 209 }
173 210
@@ -178,31 +215,87 @@ push(@snmpoids,$snmpIfAlias) if (defined $ifXTable) ;
178 $ifOperStatus{$response->{$snmpIfOperStatus}} 215 $ifOperStatus{$response->{$snmpIfOperStatus}}
179 ); 216 );
180 217
181 $session->close;
182 218
183 if ( $response->{$snmpIfOperStatus} == 1 ) { 219 ## Check to see if ifName match is requested and it matches - exit if no match
184 $state = 'OK'; 220 ## not the interface we want to monitor
221 if ( defined $name && not ($response->{$snmpIfName} eq $name) ) {
222 $state = 'UNKNOWN';
223 $answer = "Interface name ($name) doesn't match snmp value ($response->{$snmpIfName}) (index $snmpkey)";
224 print ("$state: $answer");
225 exit $ERRORS{$state};
226 }
227
228 ## define the interface name
229 if (defined $ifXTable) {
230 $name = $response->{$snmpIfName} ." - " .$response->{$snmpIfAlias} ;
231 }else{
232 $name = $response->{$snmpIfDescr} ;
185 } 233 }
186 else { 234
187 $state = 'CRITICAL'; 235 ## if AdminStatus is down - some one made a consious effort to change config
236 ##
237 if ( not ($response->{$snmpIfAdminStatus} == 1) ) {
238 $state = 'WARNING';
239 $answer = "Interface $name (index $snmpkey) is administratively down.";
240
241 }
242 ## Check operational status
243 elsif ( $response->{$snmpIfOperStatus} == 2 ) {
244 $state = 'CRITICAL';
245 $answer = "Interface $name (index $snmpkey) is down.";
246 } elsif ( $response->{$snmpIfOperStatus} == 5 ) {
247 if (defined $dormantWarn ) {
248 if ($dormantWarn eq "w") {
249 $state = 'WARNNG';
250 $answer = "Interface $name (index $snmpkey) is dormant.";
251 }elsif($dormantWarn eq "c") {
252 $state = 'CRITICAL';
253 $answer = "Interface $name (index $snmpkey) is dormant.";
254 }elsif($dormantWarn eq "i") {
255 $state = 'OK';
256 $answer = "Interface $name (index $snmpkey) is dormant.";
257 }
258 }else{
259 # dormant interface - but warning/critical/ignore not requested
260 $state = 'CRITICAL';
261 $answer = "Interface $name (index $snmpkey) is dormant.";
262 }
263 } elsif ( $response->{$snmpIfOperStatus} == 6 ) {
264 $state = 'CRITICAL';
265 $answer = "Interface $name (index $snmpkey) notPresent - possible hotswap in progress.";
266 } elsif ( $response->{$snmpIfOperStatus} == 7 ) {
267 $state = 'CRITICAL';
268 $answer = "Interface $name (index $snmpkey) down due to lower layer being down.";
269
270 } elsif ( $response->{$snmpIfOperStatus} == 3 || $response->{$snmpIfOperStatus} == 4 ) {
271 $state = 'CRITICAL';
272 $answer = "Interface $name (index $snmpkey) down (testing/unknown).";
273
274 } else {
275 $state = 'OK';
276 $answer = "Interface $name (index $snmpkey) is up.";
188 } 277 }
189 278
279
280
190print ("$state: $answer"); 281print ("$state: $answer");
191exit $ERRORS{$state}; 282exit $ERRORS{$state};
192 283
193 284
285### subroutines
286
194sub fetch_ifdescr { 287sub fetch_ifdescr {
195 if (!defined ($response = $session->get_table($snmpIfDescr))) { 288 if (!defined ($response = $session->get_table($snmpIfDescr))) {
196 $answer=$session->error; 289 $answer=$session->error;
197 $session->close; 290 $session->close;
198 $state = 'CRITICAL'; 291 $state = 'CRITICAL';
199 printf ("$state: $answer for $snmpIfDescr with snmp version $snmp_version\n"); 292 printf ("$state: SNMP error with snmp version $snmp_version ($answer)\n");
200 $session->close; 293 $session->close;
201 exit $ERRORS{$state}; 294 exit $ERRORS{$state};
202 } 295 }
203 296
204 foreach $key ( keys %{$response}) { 297 foreach $key ( keys %{$response}) {
205 if ($response->{$key} =~ /$ifdescr/) { 298 if ($response->{$key} =~ /^$ifdescr$/) {
206 $key =~ /.*\.(\d+)$/; 299 $key =~ /.*\.(\d+)$/;
207 $snmpkey = $1; 300 $snmpkey = $1;
208 #print "$ifdescr = $key / $snmpkey \n"; #debug 301 #print "$ifdescr = $key / $snmpkey \n"; #debug
@@ -242,14 +335,21 @@ sub print_help {
242 printf " 2 for SNMP v2c\n"; 335 printf " 2 for SNMP v2c\n";
243 printf " SNMP v2c will use get_bulk for less overhead\n"; 336 printf " SNMP v2c will use get_bulk for less overhead\n";
244 printf " if monitoring with -d\n"; 337 printf " if monitoring with -d\n";
245 printf " -k (--key) SNMP ifIndex value\n"; 338 printf " -k (--key) SNMP IfIndex value\n";
246 printf " -d (--descr) SNMP ifDescr value\n"; 339 printf " -d (--descr) SNMP ifDescr value\n";
247 printf " -p (--port) SNMP port (default 161)\n"; 340 printf " -p (--port) SNMP port (default 161)\n";
248 printf " -I (--ifmib) Agent supports IFMIB ifXTable. Do not use if\n"; 341 printf " -I (--ifmib) Agent supports IFMIB ifXTable. Do not use if\n";
249 printf " you don't know what this is.\n"; 342 printf " you don't know what this is. \n";
343 printf " -n (--name) the value should match the returned ifName\n";
344 printf " (Implies the use of -I)\n";
345 printf " -w (--warn =i|w|c) ignore|warn|crit if the interface is dormant (default critical)\n";
250 printf " -V (--version) Plugin version\n"; 346 printf " -V (--version) Plugin version\n";
251 printf " -h (--help) usage help \n\n"; 347 printf " -h (--help) usage help \n\n";
252 printf " -k or -d must be specified\n\n"; 348 printf " -k or -d must be specified\n\n";
349 printf "Note: either -k or -d must be specified and -d is much more network \n";
350 printf "intensive. Use it sparingly or not at all. -n is used to match against\n";
351 printf "a much more descriptive ifName value in the IfXTable to verify that the\n";
352 printf "snmpkey has not changed to some other network interface after a reboot.\n\n";
253 print_revision($PROGNAME, '$Revision$'); 353 print_revision($PROGNAME, '$Revision$');
254 354
255} 355}