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check_cisco_stack.pl
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check_cisco_stack.pl
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#!/usr/bin/perl -w
use strict;
use Getopt::Long;
use Net::SNMP;
my $Version = "1.2.1 20071018";
my $snmp_timeout = 3;
my $cisco_stack_table = "1.3.6.1.4.1.9.9.500.1.2.1.1.1";
my $cisco_stack_state = "1.3.6.1.4.1.9.9.500.1.2.1.1.6";
my $cisco_stack_ring = "1.3.6.1.4.1.9.9.500.1.1.3.0";
my $status = "UNKNOWN";
my $session;
my $error;
my $result;
my $stackring_state;
my $o_debug = 0;
my $o_alarm = 0;
my $o_host;
my $o_community;
my $o_version;
my $o_help;
my %members;
my %ERRORS = (
'OK' => 0,
'WARNING' => 1,
'CRITICAL' => 2,
'UNKNOWN' => 3,
'DEPENDENT' => 4,
);
my %STACK_STATES = (
'1' => 'waiting',
'2' => 'progressing',
'3' => 'added',
'4' => 'ready',
'5' => 'sdmMismatch',
'6' => 'verMismatch',
'7' => 'featureMismatch',
'8' => 'newMasterInit',
'9' => 'provisioned',
'10' => 'invalid',
);
##########################
#
# MAIN
#
##########################
check_options();
($session, $error) = Net::SNMP->session(
-hostname => $o_host,
-community => $o_community,
-port => 161,
-timeout => $snmp_timeout
);
if (!defined($session)) {
printf("ERROR: %s.\n", $error);
exit $ERRORS{"CRITICAL"};
}
#
# Get Cisco stack table
#
$result = $session->get_table(
-baseoid => $cisco_stack_table
);
if (!defined($result)) {
printf("ERROR: %s.\n", $session->error);
$session->close;
exit $ERRORS{"CRITICAL"};
}
foreach my $key ( keys %{$result}) {
my $id = ( $$result{$key} * 1000 ) + 1;
my $oid = "$cisco_stack_state.$id";
my $result2 = $session->get_request(
-varbindlist => [$oid]
);
if (!defined($result2)) {
printf("ERROR: %s.\n", $session->error);
$session->close;
exit $ERRORS{"CRITICAL"};
}
print "DEBUG: member = $$result{$key} -> oid = $oid -> state = " . $result2->{"$oid"} . "\n" if $o_debug;
$members{$$result{$key}} = $result2->{"$oid"};
}
if ($o_alarm) {
$members{"2"} = 6;
print "-- SIMULATING ALARM -- ";
}
#
# Get Cisco stack ring speed if more than one stack member
#
if ( keys(%{$result}) > 1 ) {
$result = $session->get_request(
-varbindlist => [$cisco_stack_ring]
);
if (!defined($result)) {
printf("ERROR: %s.\n", $session->error);
$session->close;
exit $ERRORS{"CRITICAL"};
}
#
# Parse SNMP stack ring result
#
if ( $result->{$cisco_stack_ring} == 1 ) {
$stackring_state = "Full";
}
else {
$status = "WARNING";
$stackring_state = "Half";
}
print "DEBUG: snmp_ring_state = " . $result->{$cisco_stack_ring} . " -> ring_state = $stackring_state\n" if $o_debug;
print "Stack Ring: $stackring_state, ";
}
$session->close;
my $nitems = keys (%members);
my $n = 0;
foreach my $member (keys (%members)) {
$n++;
if ( $members{$member} == 4 or 9 ) {
if (( $status ne "CRITICAL" ) && ( $status ne "WARNING" )) {
$status = "OK";
}
} else {
$status = "CRITICAL";
}
print "Member $member: $STACK_STATES{$members{$member}}";
if ($n < $nitems) {
print ", ";
} else {
print "\n";
}
}
print "DEBUG: $status: $ERRORS{$status}\n" if $o_debug;
exit $ERRORS{$status};
##########################
#
# FUNCTIONS
#
##########################
sub version {
print "$0 version: $Version\n";
}
sub usage {
print <<DATA;
Usage: $0 [-V] [-h] [-D] [-A] -H <host> -C <community>
-h, --help
prints this help message
-V, --version
prints version number
-D, --debug
prints debug info. do not use in production.
-A, --alarm
the plugin simulates an alarm without the need to break the stack!!!
-H, --hostname=HOST
name or IP address of host to check
-C, --community=STRING NAME
community name for the host's SNMP agent (implies v1/v2 protocol)
DATA
}
sub help {
print <<DATA;
SNMP Cisco stack for Nagios version: $Version
Author: Andrea Gabellini - <andrea.gabellini\@telecomitalia.sm>
Check for stack's status of Cisco 3750
DATA
usage();
}
sub check_options {
Getopt::Long::Configure ("bundling");
GetOptions(
'h' => \$o_help, 'help' => \$o_help,
'V' => \$o_version, 'version' => \$o_version,
'D' => \$o_debug, 'debug' => \$o_debug,
'A' => \$o_alarm, 'alarm' => \$o_alarm,
'H:s' => \$o_host, 'hostname:s' => \$o_host,
'C:s' => \$o_community, 'community:s' => \$o_community,
);
if (defined ($o_help) ) {
help();
exit $ERRORS{"UNKNOWN"};
}
if (defined($o_version)) {
version();
exit $ERRORS{"UNKNOWN"};
}
if (!defined($o_host) ) {
usage();
exit $ERRORS{"UNKNOWN"};
}
if (!defined($o_community) ) {
usage();
exit $ERRORS{"UNKNOWN"};
}
}