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Plugin Keeps reporting issue, randomly

https://support.nagios.com/forum/viewtopic.php?t=37895

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Plugin Keeps reporting issue, randomly

Posted: Fri Apr 08, 2016 8:39 am
by nathanplatt
I'm currently using a plugin to monitor our qnaps, every so offend I get the following alert;

CHECK_QNAPDISK UNKNOWN - plugin timed out (timeout 8s)

I'm not sure why we're getting this, any help would be appreciated. The plugin is attached.

Code: Select all

#! /usr/bin/perl -w
#
################################################################
# Changelog
################################################################
# Version 1.0.2
# 2014.06.10
# added smart info to plugin output
# thanks to
# http://exchange.nagios.org/directory/Reviews/dit_w/1#/
################################################################
# Version 1.0.1
# 2014.02.19
# change some vars from my to our
# thanks to
# http://exchange.nagios.org/directory/Reviews/navi/1
################################################################
# Version 1.0
# 2013.01.19
################################################################

use strict ;
use warnings ;
use Monitoring::Plugin ;
use Net::SNMP qw(oid_lex_sort oid_base_match) ;

	our $PROGNAME = "check_qnapdisk" ;
	our $VERSION = "1.0.2" ;

	#instantiate Nagios::Plugin
	our $np = Monitoring::Plugin->new(
	usage => "Usage: $PROGNAME [-h] [-V] -H hostname [-t timeout] [-r retries] [-C community] [-p port] [-w warning] [-c critical] [-T C | F ] [-g temp_warning] [-l temp_critical] [-v verbose]",
	version => $VERSION,
	blurb => 'This plugin checks all disk slots on your QNAP NAS host with snmp and will output OK, UNKNOWN, WARNING or CRITICAL if the resulting number is over the specified thresholds. Enable on your QNAP NAS the snmpd (see the QNAP adminguide too).',
	shortname => "QNAPDISK",
	extra => "THRESHOLDs for -w and -c are specified 'min:max' or 'min:' or ':max' (or 'max'). If specified '\@min:max', a warning status will be generated if the count *is* inside the specified range. \nExample: $PROGNAME -H 'ip-address or [DNS,host]name' -t 5 -r 2 -C public -p 161 -w 2: -c 1: -T C -g 25 -l 35 -v"
	);

	$np->add_arg(
        spec => 'warning|w=s',
        help => qq{-w, --warning=INTEGER,[INTEGER] Maximum number of allowable result, outside of which a warning will be generated.  If omitted, no warning is generated.},
	default => '0:',
        required => 0,
	);

	$np->add_arg(
        spec => 'critical|c=s',
        help => qq{-c, --critical=INTEGER,[INTEGER] Maximum number of the generated result, outside of which a critical will be generated. },
	default => '0:',
        required => 0,
	);

	$np->add_arg(
        spec => 'temperature|T=s',
        help => qq{-T, --temperature=STRING, Specify to use Celsius (default) or Fahrenheit on the command line. Use Temp.},
        default => 'C',
        required => 0,
	);

	$np->add_arg(
        spec => 'temp_warning|g=s',
        help => qq{-g, --temp_warning=INTEGER,[INTEGER] Specify the warning maximum degrees on the command line. Use Temp.},
        default => "0:",
        required => 0,
	);

	$np->add_arg(
        spec => 'temp_critical|l=s',
        help => qq{-l, --temp_critical=INTEGER,[INTEGER] Specify the critical maximum degrees on the command line. Use Temp.},
        default => "0:",
        required => 0,
	);

	$np->add_arg(
        spec => 'port|p=s',
        help => qq{-p, --port=INTEGER, Specify the snmp port on the command line, default 161.},
	default => 161,
        required => 1,
	);

	$np->add_arg(
        spec => 'retries|r=s',
        help => qq{-r, --retries=INTEGER,  Specify the number of retries the command line, default 2.},
	default => 2,
        required => 1,
	);

	$np->add_arg(
        spec => 'community|C=s',
        help => qq{-C, --community=STRING, Specify the community name on the command line, default public.},
	default => "public",
        required => 1,
	);

	$np->add_arg(
        spec => 'host|H=s',
        help => qq{-H, --host=STRING, Specify the host on the command line.},
        required => 1,
	);

	$np->getopts;


# start counting down to timeout
	alarm $np->opts->timeout;

	sub open_snmp_session {
	my ($session, $error) = Net::SNMP->session(
		-hostname  => shift || $np->opts->host,
		-community => shift || $np->opts->community,
		-port      => shift || $np->opts->port,
		-timeout   => shift || $np->opts->timeout,
		-retries   => shift || $np->opts->retries, 
		);
		return ($session,$error)
		}


	##==============main=============##

	my $mibthree_stat  = '.1.3.6.1.4.1.24681.1.2.11.1.4' ;
	my $mibthree_temp  = '.1.3.6.1.4.1.24681.1.2.11.1.3' ;
	my $mibthree_type  = '.1.3.6.1.4.1.24681.1.2.11.1.5' ;
	my $mibthree_size  = '.1.3.6.1.4.1.24681.1.2.11.1.6' ;
	my $mibthree_smart = '.1.3.6.1.4.1.24681.1.2.11.1.7' ;
	my $OID_Sysname    = '.1.3.6.1.2.1.1.5.0' ; 
	my $OID_Hardware   = '.1.3.6.1.2.1.1.1.0' ;
	
	# let's see if the qnap wants to speak with us
	my ($session,$error)=open_snmp_session($np->opts->host);
	if ( ! defined ($session)) {
		print "ERROR1: Could not open connection: $error \n";
		exit 2;
		}

	if (!defined $session) {
		printf "ERROR2: %s.\n", $error;
		exit 1;
		}

	# open the connection
	# ask your qnap
	my @oids_sgos4 = ($OID_Hardware,$OID_Sysname) ;
	my $result  = $session->get_request(-varbindlist => \@oids_sgos4,) ;
	my $result1 = $session->get_table(-baseoid => $mibthree_stat ) ;
	my $result2 = $session->get_table(-baseoid => $mibthree_temp ) ;
	my $result3 = $session->get_table(-baseoid => $mibthree_type ) ;
	my $result4 = $session->get_table(-baseoid => $mibthree_size ) ;
	my $result5 = $session->get_table(-baseoid => $mibthree_smart ) ;
	my $msg = $result->{$OID_Sysname}.", ".$result->{$OID_Hardware} ;
	my %qnap_states = ( 0 => "ready" , -5 => "no Disk" , -6 => "invalid" , -9 => "rwError" , -4 => "unknown" );
	my (@state,$min_disk,$real_disk,$max_disk)=0;
	my $nagios_view=""; my $temp_disk_max="0"; my $temp_disk_min="0";

	foreach (oid_lex_sort(keys(%{$result1}))) {
		$min_disk= 1 ; # yes is min 1 Disk available :-)
		my $disk_id=substr($_,30,2); 
		$nagios_view .= "\nDisk $disk_id Status: $qnap_states{$result1->{$_}}";
		if ( $result1->{$_} eq 0 ) {
			$real_disk++;
			$msg .= ", Disk$disk_id:$qnap_states{$result1->{$_}}";
			$state[$disk_id-1]=0;
			foreach (oid_lex_sort(keys(%{$result5}))) {
				if ( $disk_id == substr($_,30,2)) {
		    			$result5->{$_} =~ s/\s+$//;
		    			$nagios_view .= ", SmartInfo: $result5->{$_}";
		    			foreach (oid_lex_sort(keys(%{$result3}))) {
		        			if ( $disk_id == substr($_,30,2)) {
		        				$result3->{$_} =~ s/\s+$//;
		        				$nagios_view .= ", Typ: $result3->{$_}";
		        				foreach (oid_lex_sort(keys(%{$result4}))) {
			    					if ( $disk_id == substr($_,30,2)) {
				 					$nagios_view .= ", Size: $result4->{$_}";
				 					foreach (oid_lex_sort(keys(%{$result2}))) {
										if ( $disk_id == substr($_,30,2)) {
											my @temp_diskid=split(/ /,$result2->{$_});
											if ($np->opts->temperature eq "C") {
												if ($temp_disk_max < $temp_diskid[0]) { $temp_disk_max = $temp_diskid[0]; }
												if ($temp_disk_min > $temp_diskid[0] )	{ $temp_disk_min = $temp_diskid[0]; }
												if ($temp_disk_min eq "0") { $temp_disk_min = $temp_diskid[0]; }
												}
											if ($np->opts->temperature eq "F") {
												my @temp_diskid=split(/ /,$result2->{$_});
												$temp_diskid[1] =~ s/C\///;
												if ($temp_disk_max < $temp_diskid[1]) { $temp_disk_max = $temp_diskid[1];}
												if ($temp_disk_min > $temp_diskid[1] )	{ $temp_disk_min = $temp_diskid[1]; }
												if ($temp_disk_min eq "0") { $temp_disk_min = $temp_diskid[1]; }
												}	
											$nagios_view .= ", Temp: $result2->{$_}";
											}	
										}	
									}	
								}
							}
						}
					}
	    			}
			} else {
			$real_disk++;
	$msg .= ", Disk$disk_id:$qnap_states{$result1->{$_}}";
	if ( $result1->{$_} != -5 || $result1->{$_} != 0 ) { 
		$state[$disk_id-1]=2;
		}
	if ( $result1->{$_} == -5 ) {
		$real_disk--;
		$state[$disk_id-1]=0;
		}
		
	}
	$max_disk=$disk_id;
	}
	$session->close();
	$msg .= ", max. Temperature:".$temp_disk_max.$np->opts->temperature;
	if ($np->opts->verbose) {
	    $msg .= "\n=================$nagios_view\n\n";
	   }	
	# Perfdata methods disk
	my $perfdata_code_disk = $np->add_perfdata( 
		label => "Disk",
		value => $real_disk,
		#uom => "kB",
     		warning => $np->opts->warning,
     		critical => $np->opts->critical,
		min => $min_disk,
		max => $max_disk,
		) ;
	# Perfdata methods temperature
	my $perfdata_code_temp = $np->add_perfdata( 
		label => "Temp",
		value => $temp_disk_max,
		uom => $np->opts->temperature,
		warning => $np->opts->temp_warning,
		critical => $np->opts->temp_critical,
		min => $temp_disk_min,
		max => $temp_disk_max,
   		) ;

	# Threshold methods disks
	my $threshold_code_disk = $np->check_threshold(
     		check => $real_disk,
     		warning => $np->opts->warning,
     		critical => $np->opts->critical,
   		) ;
	$np->nagios_exit( $threshold_code_disk, "$msg" ) if $threshold_code_disk != 0 ;
	
	# Threshold methods temperature
	my $threshold_code_temp = $np->check_threshold(
     		check => $temp_disk_max,
     		warning => $np->opts->temp_warning,
     		critical => $np->opts->temp_critical,
   		) if defined $np->opts->temperature;
	 $np->nagios_exit( $threshold_code_temp, "$msg" ) if $threshold_code_temp != 0 ;
	
        foreach (@state){
                if ($threshold_code_disk < $_) {$threshold_code_disk=$_;}
                }
	
   	$np->nagios_exit( $threshold_code_disk, "$msg" ) ;

	# thanks

Re: Plugin Keeps reporting issue, randomly

Posted: Fri Apr 08, 2016 8:45 am
by rhassing
Do you have SNMP enabled on the QNAP? And do you have the correct community?
Please try:

Code: Select all

snmpwalk -v2c -c <snmpcommunity> <IP address>

Re: Plugin Keeps reporting issue, randomly

Posted: Fri Apr 08, 2016 8:55 am
by nathanplatt
HI Rob,

That works fine. The response was too large to copy

Nathan

Re: Plugin Keeps reporting issue, randomly

Posted: Fri Apr 08, 2016 12:50 pm
by hsmith
Does it ever work, or is it always failing the check?

Re: Plugin Keeps reporting issue, randomly

Posted: Fri Apr 08, 2016 2:21 pm
by nathanplatt
It does work fine, just seems to be about a few times a week. The main issue is, we have two of these qnaps, one is at the local site and has no issues and the other one is in the datacentre, it's the datacentre one that has he issue

Re: Plugin Keeps reporting issue, randomly

Posted: Fri Apr 08, 2016 2:31 pm
by lmiltchev
According to the plugin's documentation on the Nagios Exchange, the "default" timeout is 15 sec.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
https://exchange.nagios.org/directory/P ... sk/details

It's strange that it times out after 8 sec...
CHECK_QNAPDISK UNKNOWN - plugin timed out (timeout 8s)
Have you tried increasing the timeout value? Does it make any difference?

Re: Plugin Keeps reporting issue, randomly

Posted: Mon Apr 11, 2016 6:13 am
by nathanplatt
I've manually set the time out to be 20, so far i've not had any errors. I'll check back here tomorrow and let you know if its worked.

Re: Plugin Keeps reporting issue, randomly

Posted: Mon Apr 11, 2016 10:33 am
by rkennedy
Great - let us know if the issue persists, but it sounds like we might have got it solved!

Re: Plugin Keeps reporting issue, randomly

Posted: Mon Apr 11, 2016 11:03 am
by nathanplatt
Not directly related, but do you have any products that can manage windows machines in the same way Kaseya can, something that can manage/deploy AV?

Re: Plugin Keeps reporting issue, randomly

Posted: Mon Apr 11, 2016 1:31 pm
by hsmith
Nagios Reactor sort of can, but it requires some hacking together.

Here's a guide wrote by one of our MVP community members, @WillemDH.

However, we don't have anything on the level of ansible/puppet/etc.. (for Windows, or Linux.)
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