[Nagiosplug-help] R: R: check_by_ssh timed out issue

[Valerio.FABRIZIO at sungard.com]

I suppose this must be written into the plugin.... I don't use check_by_ssh, so I didn't know it didn't have the -u option.

For example I have it in check_nrpe.

Another workaround could be to elevate the -t option. Try to set It to 60 secs, for example.

In your example you have two plugins, they both have a -t option. What if you try to elevate one or another until you don't get timeout errors anymore?

By the way, do check_logfiles plugin have a -u option? If so, you could set -u,  and a "-t" lower than the check_by_ssh one, so that the first plugin to go timed out should be the one with -u option... 

 

 

 

Valerio Fabrizio * Technical Specialist * SunGard  Global Trading * Via Degli Amedei, 15 20123 Milano, Italy
Tel:+39 02 45442332 * Fax:+39 45 44 22 99 * Mobile:+39 3463949080 * valerio.fabrizio at sungard.com * www.sungard.com/globaltrading

 

________________________________

Da: Mirza Dedic [mailto:mirde at oppy.com] 
Inviato: giovedì 27 maggio 2010 16.12
A: 'nagiosplug-help at lists.sourceforge.net'
Oggetto: Re: [Nagiosplug-help] R: check_by_ssh timed out issue

 

How did you get the -u switch to appear on check_by_ssh?

 

Mine does not seem to have this, this is the output of -h for my plugin.

 

check_by_ssh v2002 (nagios-plugins 1.4.13)

Copyright (c) 1999 Karl DeBisschop <kdebisschop at users.sourceforge.net>

Copyright (c) 2000-2008 Nagios Plugin Development Team

      <nagiosplug-devel at lists.sourceforge.net>

 

This plugin uses SSH to execute commands on a remote host

 

Usage: check_by_ssh -H <host> -C <command> [-fqv] [-1|-2] [-4|-6]

       [-S [lines]] [-E [lines]] [-t timeout] [-i identity]

       [-l user] [-n name] [-s servicelist] [-O outputfile]

       [-p port] [-o ssh-option]

 

Options:

-h, --help

    Print detailed help screen

-V, --version

    Print version information

--extra-opts=[section][@file]

    Read additionnal options from ini file

-H, --hostname=ADDRESS

    Host name, IP Address, or unix socket (must be an absolute path)

-p, --port=INTEGER

    Port number (default: none)

-4, --use-ipv4

    Use IPv4 connection

-6, --use-ipv6

    Use IPv6 connection

-1, --proto1

    tell ssh to use Protocol 1 [optional]

-2, --proto2

    tell ssh to use Protocol 2 [optional]

-S, --skip-stdout[=n]

    Ignore all or (if specified) first n lines on STDOUT [optional]

-E, --skip-stderr[=n]

    Ignore all or (if specified) first n lines on STDERR [optional]

-f

    tells ssh to fork rather than create a tty [optional]. This will always return OK if ssh is executed

-C, --command='COMMAND STRING'

    command to execute on the remote machine

-l, --logname=USERNAME

    SSH user name on remote host [optional]

-i, --identity=KEYFILE

    identity of an authorized key [optional]

-O, --output=FILE

    external command file for nagios [optional]

-s, --services=LIST

    list of nagios service names, separated by ':' [optional]

-n, --name=NAME

    short name of host in nagios configuration [optional]

-o, --ssh-option=OPTION

    Call ssh with '-o OPTION' (may be used multiple times) [optional]

-q, --quiet

    Tell ssh to suppress warning and diagnostic messages [optional]

-w, --warning=DOUBLE

    Response time to result in warning status (seconds)

-c, --critical=DOUBLE

    Response time to result in critical status (seconds)

-t, --timeout=INTEGER

    Seconds before connection times out (default: 10)

-v, --verbose

    Show details for command-line debugging (Nagios may truncate output)

 

The most common mode of use is to refer to a local identity file with

the '-i' option. In this mode, the identity pair should have a null

passphrase and the public key should be listed in the authorized_keys

file of the remote host. Usually the key will be restricted to running

only one command on the remote server. If the remote SSH server tracks

invocation arguments, the one remote program may be an agent that can

execute additional commands as proxy

 

To use passive mode, provide multiple '-C' options, and provide

all of -O, -s, and -n options (servicelist order must match '-C'options)

 

Examples:

$ check_by_ssh -H localhost -n lh -s c1:c2:c3 -C uptime -C uptime -C uptime -O /tmp/foo

$ cat /tmp/foo

[1080933700] PROCESS_SERVICE_CHECK_RESULT;flint;c1;0; up 2 days

[1080933700] PROCESS_SERVICE_CHECK_RESULT;flint;c2;0; up 2 days

[1080933700] PROCESS_SERVICE_CHECK_RESULT;flint;c3;0; up 2 days

 

Notes:

See: http://nagiosplugins.org/extra-opts for --extra-opts usage and examples.

 

Send email to nagios-users at lists.sourceforge.net if you have questions

regarding use of this software. To submit patches or suggest improvements,

send email to nagiosplug-devel at lists.sourceforge.net

 

 

From: Valerio.FABRIZIO at sungard.com [mailto:Valerio.FABRIZIO at sungard.com] 
Sent: May/26/2010 10:54 PM
To: nagiosplug-help at lists.sourceforge.net
Subject: [Nagiosplug-help] R: check_by_ssh timed out issue

 

 

 

Hi

I've had the same problem with some remote checks, I solved it by adding a "-u" in the command. ("u" turns a time out critical into a time out unknown message). This works only if your plugin accept this value. 

 

 

Regards 

Valerio

________________________________

Da: Mirza Dedic [mailto:mirde at oppy.com] 
Inviato: giovedì 27 maggio 2010 5.18
A: 'Nagios Plugin Help List'
Oggetto: Re: [Nagiosplug-help] check_by_ssh timed out issue

 

I get that, but with the check script the "timed out" warning comes back as a critical.

 

I might be stuck with this as there is no "switch" to add to check_by_ssh for timed out values to not raise a critical condition as I've seen in some other scripts.

 

From: Tony Parsonage [mailto:TParsonage at thiess.com.au] 
Sent: May/26/2010 5:02 PM
To: Nagios Plugin Help List
Subject: Re: [Nagiosplug-help] check_by_ssh timed out issue

 

You should be able to set the alert so that if you get an 'unknown' response then  will not alert.  I am unsure where this is set on the command line, my copy of Groundworks uses a web browser front end and it is set as below:

 

 

 

If I untick the box for 'unknown' then save your configuration then I only get emails for Warning and Critical alerts.

 

Tony 

 

From: Mirza Dedic [mailto:mirde at oppy.com] 
Sent: Thursday, 27 May 2010 9:50 AM
To: 'nagiosplug-help at lists.sourceforge.net'
Subject: [Nagiosplug-help] check_by_ssh timed out issue

 

Hi List,

 

I have Nagios currently using check_by_ssh (check_by_ssh v2002 (nagios-plugins 1.4.13)) to check some of my remote servers, it calls a log script on the remote server and the log script returns a warning if the log files matches the criteria.

 

Every now and then, the check_by_ssh script gets timed out, and returns the message below.

 

Is there a way to suppress this at the Nagios box, so that Plugin Timed Out messages do not get emailed as "Critical"?

 

Anyone know? Below is my command definition..

 

define command{

                command_name             van-oppy-pro_data450

                command_line $USER1$/check_by_ssh -H someserver -p 22 -i /home/nagios/.ssh/id_dsa -t 10 -C "/home/nagios/plugins/check_logfiles -t 30 -f /home/nagios/log_conf/usr1_data450.lg"

}

 

Nagios alert returned when the box being queried is very busy (this does not happen often, but creates a unwanted false positive warning):

 

CRITICAL - Plugin timed out while executing system call

 

 

Click here <https://www.mailcontrol.com/sr/wQw0zmjPoHdJTZGyOCrrhg==>  to report this email as spam.

The Oppenheimer Group ---- CONFIDENTIAL
 
This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.
 

 

_____________________________________________________________________

IMPORTANT - This email and any attachments may be confidential and privileged.  

If received in error, please contact Thiess and delete all copies.  You may not 

rely on advice and documents received by email unless confirmed by a signed Thiess

letter.  This restriction on reliance will not apply to the extent that the above email 

communication is between parties to a contract and is authorised under that contract.

Before opening or using attachments, check them for viruses and defects.  Thiess' 

liability is limited to resupplying any affected attachments.

 

The Oppenheimer Group ---- CONFIDENTIAL
 
This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.
The Oppenheimer Group ---- CONFIDENTIAL

This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.
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