![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
index 46964677179939bfd5392d4678413562b61ebf7c..59356bd7a21e65b4f6b34cce9184b455c6560784 100644 (file)
#
# check_ifoperstatus.pl - nagios plugin
#
-# Copyright (C) 2000 Christoph Kron
+# Copyright (C) 2000 Christoph Kron,
# Modified 5/2002 to conform to updated Nagios Plugin Guidelines
# Added support for named interfaces per Valdimir Ivaschenko (S. Ghosh)
+# Added SNMPv3 support (10/2003)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
#
-# Report bugs to: ck@zet.net, nagiosplug-help@lists.sf.net
+# Report bugs to: nagiosplug-help@lists.sourceforge.net
#
# 11.01.2000 Version 1.0
# $Id$
+#
+# Patches from Guy Van Den Bergh to warn on ifadminstatus down interfaces
+# instead of critical.
+#
+# Primary MIB reference - RFC 2863
+
use POSIX;
use strict;
&Getopt::Long::config('bundling');
my $PROGNAME = "check_ifoperstatus";
+sub print_help ();
+sub usage ();
+sub process_arguments ();
+
+my $timeout;
my $status;
my %ifOperStatus = ('1','up',
'2','down',
'3','testing',
'4','unknown',
'5','dormant',
- '6','notPresent');
+ '6','notPresent',
+ '7','lowerLayerDown'); # down due to the state of lower layer interface(s)
my $state = "UNKNOWN";
my $answer = "";
my $snmpkey = 0;
my $community = "public";
+my $maxmsgsize = 1472 ; # Net::SNMP default is 1472
+my ($seclevel, $authproto, $secname, $authpass, $privpass, $auth, $priv, $context);
my $port = 161;
my @snmpoids;
-my $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2';
+my $sysUptime = '1.3.6.1.2.1.1.3.0';
+my $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2';
+my $snmpIfAdminStatus = '1.3.6.1.2.1.2.2.1.7';
my $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8';
-my $snmpIfName = '1.3.6.1.2.1.31.1.1.1.1';
-my $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18';
-my $snmpLocIfDescr = '1.3.6.1.4.1.9.2.2.1.1.28';
+my $snmpIfName = '1.3.6.1.2.1.31.1.1.1.1';
+my $snmpIfLastChange = '1.3.6.1.2.1.2.2.1.9';
+my $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18';
+my $snmpLocIfDescr = '1.3.6.1.4.1.9.2.2.1.1.28';
my $hostname;
+my $ifName;
my $session;
my $error;
my $response;
my $opt_V ;
my $ifdescr;
my $key;
+my $lastc;
+my $dormantWarn;
+my $adminWarn;
+my $name;
+
+### Validate Arguments
+$status = process_arguments();
# Just in case of problems, let's not hang Nagios
print ("ERROR: No snmp response from $hostname (alarm)\n");
exit $ERRORS{"UNKNOWN"};
};
-#alarm($TIMEOUT);
-
-
-$status = GetOptions(
- "V" => \$opt_V, "version" => \$opt_V,
- "h" => \$opt_h, "help" => \$opt_h,
- "v=i" => \$snmp_version, "snmp_version=i" => \$snmp_version,
- "C=s" =>\$community, "community=s" => \$community,
- "k=i" =>\$snmpkey, "key=i",\$snmpkey,
- "d=s" =>\$ifdescr, "descr=s" => \$ifdescr,
- "p=i" =>\$port, "port=i",\$port,
- "H=s" => \$hostname, "hostname=s" => \$hostname,
- "I" => \$ifXTable, "ifmib" => \$ifXTable);
-
-
-
-if ($status == 0)
-{
- print_help();
- exit $ERRORS{'OK'};
-}
-
-if ($opt_V) {
- print_revision($PROGNAME,'$Revision$ ');
- exit $ERRORS{'OK'};
-}
-
-if ($opt_h) {
- print_help();
- exit $ERRORS{'OK'};
-}
-
-if (! utils::is_hostname($hostname)){
- usage();
- exit $ERRORS{"UNKNOWN"};
-}
+alarm($timeout);
-if ( $snmp_version =~ /[12]/ ) {
- ($session, $error) = Net::SNMP->session(
- -hostname => $hostname,
- -community => $community,
- -port => $port,
- -version => $snmp_version
- );
- if (!defined($session)) {
- $state='UNKNOWN';
- $answer=$error;
- print ("$state: $answer");
- exit $ERRORS{$state};
- }
-}elsif ( $snmp_version =~ /3/ ) {
- $state='UNKNOWN';
- print ("$state: No support for SNMP v3 yet\n");
- exit $ERRORS{$state};
-}else{
- $state='UNKNOWN';
- print ("$state: No support for SNMP v$snmp_version yet\n");
- exit $ERRORS{$state};
-}
+## map ifdescr to ifindex - should look at being able to cache this value
if (defined $ifdescr) {
# escape "/" in ifdescr - very common in the Cisco world
# recommend use of SNMP v2 (get-bulk)
if ($status==0) {
$state = "UNKNOWN";
- printf "$state: could not retrive ifIndex - $status-$snmpkey\n";
+ printf "$state: could not retrive ifdescr snmpkey - $status-$snmpkey\n";
$session->close;
exit $ERRORS{$state};
}
}
-if ( $snmpkey == 0 ) {
- printf "ifIndex key cannot be 0\n";
- usage();
- exit $ERRORS{'UNKNOWN'};
-}
- $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8' . "." . $snmpkey;
- $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2' . "." . $snmpkey;
- $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18' . "." . $snmpkey ;
+## Main function
+
+$snmpIfAdminStatus = $snmpIfAdminStatus . "." . $snmpkey;
+$snmpIfOperStatus = $snmpIfOperStatus . "." . $snmpkey;
+$snmpIfDescr = $snmpIfDescr . "." . $snmpkey;
+$snmpIfName = $snmpIfName . "." . $snmpkey ;
+$snmpIfAlias = $snmpIfAlias . "." . $snmpkey ;
+push(@snmpoids,$snmpIfAdminStatus);
push(@snmpoids,$snmpIfOperStatus);
push(@snmpoids,$snmpIfDescr);
+push(@snmpoids,$snmpIfName) if (defined $ifXTable) ;
push(@snmpoids,$snmpIfAlias) if (defined $ifXTable) ;
if (!defined($response = $session->get_request(@snmpoids))) {
$answer=$session->error;
$session->close;
- $state = 'CRITICAL';
- print ("$state: $answer for ifIndex $snmpkey\n");
+ $state = 'WARNING';
+ print ("$state: SNMP error: $answer\n");
exit $ERRORS{$state};
}
$ifOperStatus{$response->{$snmpIfOperStatus}}
);
- $session->close;
- if ( $response->{$snmpIfOperStatus} == 1 ) {
- $state = 'OK';
+ ## Check to see if ifName match is requested and it matches - exit if no match
+ ## not the interface we want to monitor
+ if ( defined $name && not ($response->{$snmpIfName} eq $name) ) {
+ $state = 'UNKNOWN';
+ $answer = "Interface name ($name) doesn't match snmp value ($response->{$snmpIfName}) (index $snmpkey)";
+ print ("$state: $answer");
+ exit $ERRORS{$state};
+ }
+
+ ## define the interface name
+ if (defined $ifXTable) {
+ $name = $response->{$snmpIfName} ." - " .$response->{$snmpIfAlias} ;
+ }else{
+ $name = $response->{$snmpIfDescr} ;
}
- else {
- $state = 'CRITICAL';
+
+ ## if AdminStatus is down - some one made a consious effort to change config
+ ##
+ if ( not ($response->{$snmpIfAdminStatus} == 1) ) {
+ $answer = "Interface $name (index $snmpkey) is administratively down.";
+ if ( not defined $adminWarn or $adminWarn eq "w" ) {
+ $state = 'WARNING';
+ } elsif ( $adminWarn eq "i" ) {
+ $state = 'OK';
+ } elsif ( $adminWarn eq "c" ) {
+ $state = 'CRITICAL';
+ } else { # If wrong value for -a, say warning
+ $state = 'WARNING';
+ }
+ }
+ ## Check operational status
+ elsif ( $response->{$snmpIfOperStatus} == 2 ) {
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) is down.";
+ } elsif ( $response->{$snmpIfOperStatus} == 5 ) {
+ if (defined $dormantWarn ) {
+ if ($dormantWarn eq "w") {
+ $state = 'WARNING';
+ $answer = "Interface $name (index $snmpkey) is dormant.";
+ }elsif($dormantWarn eq "c") {
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) is dormant.";
+ }elsif($dormantWarn eq "i") {
+ $state = 'OK';
+ $answer = "Interface $name (index $snmpkey) is dormant.";
+ }
+ }else{
+ # dormant interface - but warning/critical/ignore not requested
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) is dormant.";
+ }
+ } elsif ( $response->{$snmpIfOperStatus} == 6 ) {
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) notPresent - possible hotswap in progress.";
+ } elsif ( $response->{$snmpIfOperStatus} == 7 ) {
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) down due to lower layer being down.";
+
+ } elsif ( $response->{$snmpIfOperStatus} == 3 || $response->{$snmpIfOperStatus} == 4 ) {
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) down (testing/unknown).";
+
+ } else {
+ $state = 'OK';
+ $answer = "Interface $name (index $snmpkey) is up.";
}
+
+
print ("$state: $answer");
exit $ERRORS{$state};
+### subroutines
+
sub fetch_ifdescr {
if (!defined ($response = $session->get_table($snmpIfDescr))) {
$answer=$session->error;
$session->close;
$state = 'CRITICAL';
- printf ("$state: $answer for $snmpIfDescr with snmp version $snmp_version\n");
+ printf ("$state: SNMP error with snmp version $snmp_version ($answer)\n");
$session->close;
exit $ERRORS{$state};
}
foreach $key ( keys %{$response}) {
- if ($response->{$key} =~ /$ifdescr/) {
+ if ($response->{$key} =~ /^$ifdescr$/) {
$key =~ /.*\.(\d+)$/;
$snmpkey = $1;
#print "$ifdescr = $key / $snmpkey \n"; #debug
return $snmpkey;
}
-sub usage {
+sub usage() {
printf "\nMissing arguments!\n";
printf "\n";
printf "usage: \n";
exit $ERRORS{"UNKNOWN"};
}
-sub print_help {
+sub print_help() {
printf "check_ifoperstatus plugin for Nagios monitors operational \n";
printf "status of a particular network interface on the target host\n";
printf "\nUsage:\n";
printf " 2 for SNMP v2c\n";
printf " SNMP v2c will use get_bulk for less overhead\n";
printf " if monitoring with -d\n";
- printf " -k (--key) SNMP ifIndex value\n";
+ printf " -L (--seclevel) choice of \"noAuthNoPriv\", \"authNoPriv\", or \"authPriv\"\n";
+ printf " -U (--secname) username for SNMPv3 context\n";
+ printf " -c (--context) SNMPv3 context name (default is empty string)";
+ printf " -A (--authpass) authentication password (cleartext ascii or localized key\n";
+ printf " in hex with 0x prefix generated by using \"snmpkey\" utility\n";
+ printf " auth password and authEngineID\n";
+ printf " -a (--authproto) Authentication protocol ( MD5 or SHA1)\n";
+ printf " -X (--privpass) privacy password (cleartext ascii or localized key\n";
+ printf " in hex with 0x prefix generated by using \"snmpkey\" utility\n";
+ printf " privacy password and authEngineID\n";
+ printf " -k (--key) SNMP IfIndex value\n";
printf " -d (--descr) SNMP ifDescr value\n";
printf " -p (--port) SNMP port (default 161)\n";
printf " -I (--ifmib) Agent supports IFMIB ifXTable. Do not use if\n";
- printf " you don't know what this is.\n";
+ printf " you don't know what this is. \n";
+ printf " -n (--name) the value should match the returned ifName\n";
+ printf " (Implies the use of -I)\n";
+ printf " -w (--warn =i|w|c) ignore|warn|crit if the interface is dormant (default critical)\n";
+ printf " -D (--admin-down =i|w|c) same for administratively down interfaces (default warning)\n";
+ printf " -M (--maxmsgsize) Max message size - usefull only for v1 or v2c\n";
+ printf " -t (--timeout) seconds before the plugin times out (default=$TIMEOUT)\n";
printf " -V (--version) Plugin version\n";
printf " -h (--help) usage help \n\n";
printf " -k or -d must be specified\n\n";
+ printf "Note: either -k or -d must be specified and -d is much more network \n";
+ printf "intensive. Use it sparingly or not at all. -n is used to match against\n";
+ printf "a much more descriptive ifName value in the IfXTable to verify that the\n";
+ printf "snmpkey has not changed to some other network interface after a reboot.\n\n";
print_revision($PROGNAME, '$Revision$');
}
+
+sub process_arguments() {
+ $status = GetOptions(
+ "V" => \$opt_V, "version" => \$opt_V,
+ "h" => \$opt_h, "help" => \$opt_h,
+ "v=i" => \$snmp_version, "snmp_version=i" => \$snmp_version,
+ "C=s" => \$community, "community=s" => \$community,
+ "L=s" => \$seclevel, "seclevel=s" => \$seclevel,
+ "a=s" => \$authproto, "authproto=s" => \$authproto,
+ "U=s" => \$secname, "secname=s" => \$secname,
+ "A=s" => \$authpass, "authpass=s" => \$authpass,
+ "X=s" => \$privpass, "privpass=s" => \$privpass,
+ "c=s" => \$context, "context=s" => \$context,
+ "k=i" => \$snmpkey, "key=i",\$snmpkey,
+ "d=s" => \$ifdescr, "descr=s" => \$ifdescr,
+ "l=s" => \$lastc, "lastchange=s" => \$lastc,
+ "p=i" => \$port, "port=i" =>\$port,
+ "H=s" => \$hostname, "hostname=s" => \$hostname,
+ "I" => \$ifXTable, "ifmib" => \$ifXTable,
+ "n=s" => \$ifName, "name=s" => \$ifName,
+ "w=s" => \$dormantWarn, "warn=s" => \$dormantWarn,
+ "D=s" => \$adminWarn, "admin-down=s" => \$adminWarn,
+ "M=i" => \$maxmsgsize, "maxmsgsize=i" => \$maxmsgsize,
+ "t=i" => \$timeout, "timeout=i" => \$timeout,
+ );
+
+
+
+ if ($status == 0){
+ print_help();
+ exit $ERRORS{'OK'};
+ }
+
+ if ($opt_V) {
+ print_revision($PROGNAME,'$Revision$ ');
+ exit $ERRORS{'OK'};
+ }
+
+ if ($opt_h) {
+ print_help();
+ exit $ERRORS{'OK'};
+ }
+
+ if (! utils::is_hostname($hostname)){
+ usage();
+ exit $ERRORS{"UNKNOWN"};
+ }
+
+
+ unless ($snmpkey > 0 || defined $ifdescr){
+ printf "Either a valid snmpkey key (-k) or a ifDescr (-d) must be provided)\n";
+ usage();
+ exit $ERRORS{"UNKNOWN"};
+ }
+
+
+ if (defined $name) {
+ $ifXTable=1;
+ }
+
+ if (defined $dormantWarn) {
+ unless ($dormantWarn =~ /^(w|c|i)$/ ) {
+ printf "Dormant alerts must be one of w|c|i \n";
+ exit $ERRORS{'UNKNOWN'};
+ }
+ }
+
+ unless (defined $timeout) {
+ $timeout = $TIMEOUT;
+ }
+
+ if ($snmp_version =~ /3/ ) {
+ # Must define a security level even though default is noAuthNoPriv
+ # v3 requires a security username
+ if (defined $seclevel && defined $secname) {
+
+ # Must define a security level even though defualt is noAuthNoPriv
+ unless ($seclevel eq ('noAuthNoPriv' || 'authNoPriv' || 'authPriv' ) ) {
+ usage();
+ exit $ERRORS{"UNKNOWN"};
+ }
+
+ # Authentication wanted
+ if ($seclevel eq ('authNoPriv' || 'authPriv') ) {
+
+ unless ($authproto eq ('MD5' || 'SHA1') ) {
+ usage();
+ exit $ERRORS{"UNKNOWN"};
+ }
+
+ if ( !defined $authpass) {
+ usage();
+ exit $ERRORS{"UNKNOWN"};
+ }else{
+ if ($authpass =~ /^0x/ ) {
+ $auth = "-authkey => $authpass" ;
+ }else{
+ $auth = "-authpassword => $authpass";
+ }
+ }
+
+ }
+
+ # Privacy (DES encryption) wanted
+ if ($seclevel eq 'authPriv' ) {
+ if (! defined $privpass) {
+ usage();
+ exit $ERRORS{"UNKNOWN"};
+ }else{
+ if ($privpass =~ /^0x/){
+ $priv = "-privkey => $privpass";
+ }else{
+ $priv = "-privpassword => $privpass";
+ }
+ }
+ }
+
+ # Context name defined or default
+
+ unless ( defined $context) {
+ $context = "";
+ }
+
+
+
+ }else {
+ usage();
+ exit $ERRORS{'UNKNOWN'}; ;
+ }
+ } # end snmpv3
+
+
+ if ( $snmp_version =~ /[12]/ ) {
+ ($session, $error) = Net::SNMP->session(
+ -hostname => $hostname,
+ -community => $community,
+ -port => $port,
+ -version => $snmp_version,
+ -maxmsgsize => $maxmsgsize
+ );
+
+ if (!defined($session)) {
+ $state='UNKNOWN';
+ $answer=$error;
+ print ("$state: $answer");
+ exit $ERRORS{$state};
+ }
+
+ }elsif ( $snmp_version =~ /3/ ) {
+
+ if ($seclevel eq 'noAuthNoPriv') {
+ ($session, $error) = Net::SNMP->session(
+ -hostname => $hostname,
+ -port => $port,
+ -version => $snmp_version,
+ -username => $secname,
+ );
+
+ }elsif ( $seclevel eq 'authNoPriv' ) {
+ ($session, $error) = Net::SNMP->session(
+ -hostname => $hostname,
+ -port => $port,
+ -version => $snmp_version,
+ -username => $secname,
+ $auth,
+ -authprotocol => $authproto,
+ );
+ }elsif ($seclevel eq 'authPriv' ) {
+ ($session, $error) = Net::SNMP->session(
+ -hostname => $hostname,
+ -port => $port,
+ -version => $snmp_version,
+ -username => $secname,
+ $auth,
+ -authprotocol => $authproto,
+ $priv
+ );
+ }
+
+
+ if (!defined($session)) {
+ $state='UNKNOWN';
+ $answer=$error;
+ print ("$state: $answer");
+ exit $ERRORS{$state};
+ }
+
+ }else{
+ $state='UNKNOWN';
+ print ("$state: No support for SNMP v$snmp_version yet\n");
+ exit $ERRORS{$state};
+ }
+
+}
+## End validation
+