Perl plugins: No output from plugin

[Subhendu Ghosh]

Can you try the following in the command def

$USER1$/plugin options > /tmp/plugin_output.tmp |echo $?

The tmp file should caontain any output on STDOUT and $? should give you 
the plugin exit code.

-sg


On Tue, 23 Aug 2005, Dennis Hopp wrote:

> I got the plugins from:
>
> http://www.manubulon.com/nagios
>
> The first line in the is:
>
> #!/usr/bin/perl -w
>
> So yes, the explicit path.
>
> I did a strace on nagios and I can see where it calls the perl interpreter (at /usr/bin/perl) and I can see the plugin being opened and communicating with the other machine.  After a lot of strace output I see the "No output from plugin" being written by nagios.
>
> --Dennis
>
>> -----Original Message-----
>> From: Subhendu Ghosh [mailto:sghosh at sghosh.org]
>> Sent: Tuesday, August 23, 2005 9:59 AM
>> To: Dennis Hopp
>> Cc: nagios-users at lists.sourceforge.net
>> Subject: RE: [Nagios-users] Perl plugins: No output from plugin
>>
>>
>> How do you start the plugins - explicit path to perl ?
>>
>>
>> On Tue, 23 Aug 2005, Dennis Hopp wrote:
>>
>>> Here's some more information....
>>>
>>> If I change the check command to:
>>>
>>> command_line    echo $USER1$/check_snmp_load.pl -h
>>>
>>> I get the last two lines of the help output as my Status Information and
>> Performance Data respectively.
>>>
>>> --Dennis
>>>
>>>> -----Original Message-----
>>>> From: nagios-users-admin at lists.sourceforge.net [mailto:nagios-users-
>>>> admin at lists.sourceforge.net] On Behalf Of Dennis Hopp
>>>> Sent: Tuesday, August 23, 2005 8:39 AM
>>>> To: Lori Adams; nagios-users at lists.sourceforge.net
>>>> Subject: RE: [Nagios-users] Perl plugins: No output from plugin
>>>>
>>>> I changed the check command to echo the output.  In the UI I get this:
>>>>
>>>> /opt/nagios/plugins/check_snmp_load.pl -H 10.12.10.29 -C public -w
>> 2,2,3 -
>>>> c 3,3,4 -L
>>>>
>>>> So then as the nagios user I copied and pasted that....
>>>>
>>>> -sh-3.00$ /opt/nagios/plugins/check_snmp_load.pl -H 10.12.10.29 -C
>> public
>>>> -w 2,2,3 -c 3,3,4 -L
>>>> Load : 0.00 0.01 0.00 : OK
>>>> -sh-3.00$
>>>>
>>>> As you can see there is output...but for some reason nagios is saying
>>>> there isn't when it fires it off on it's own.
>>>>
>>>> --Dennis
>>>>
>>>> -----Original Message-----
>>>> From: Lori Adams [mailto:ladams at cloudmark.com]
>>>> Sent: Monday, August 22, 2005 7:44 PM
>>>> To: Dennis Hopp; nagios-users at lists.sourceforge.net
>>>> Subject: RE: [Nagios-users] Perl plugins: No output from plugin
>>>>
>>>> When you ran it by hand as nagios user, did you include all relevant
>>>> arguments?
>>>> /opt/nagios/plugins/check_snmp_load.pl -H x.x.x.x -C public -w 2,2,3 -c
>>>> 3,3,4 -L
>>>>
>>>> Another trick to verify that you're running it by hand correctly is to
>> do
>>>> define command{
>>>>        command_name    check_linux_load
>>>>        command_line    echo $USER1$/check_snmp_load.pl -H $HOSTADDRESS$
>> -C
>>>> public -w $ARG1$ -c $ARG2$ -L
>>>> }
>>>> The command will appear in the UI, and then you can run what is shown.
>>>>
>>>> "No output from plugin" means just that.  Nagios is expecting some kind
>> of
>>>> statement about the check.  Your check is not outputting anything.
>>>>   You're getting a difference between running by hand and running
>>>> automatically.  Get those to be the same, it'll be easier to track
>> down.
>>>>
>>>> -Lori
>>>>
>>>>
>>>> From: nagios-users-admin at lists.sourceforge.net [mailto:nagios-users-
>>>> admin at lists.sourceforge.net] On Behalf Of Dennis Hopp
>>>> Sent: Monday, August 22, 2005 3:54 PM
>>>> To: nagios-users at lists.sourceforge.net
>>>> Subject: [Nagios-users] Perl plugins: No output from plugin
>>>>
>>>> I'm trying to use the check_snmp_load.pl and check_snmp_storage.pl
>>>>
>>>> I can run the plugin from the command line (as both root and nagios
>> user)
>>>> and get the right results but when it's fired off automatically I keep
>>>> getting "No output from plugin".
>>>>
>>>> Here are the relevant config:
>>>>
>>>> define  service{
>>>>         use                             generic-service
>>>>         hostgroup_name                  LinuxServers
>>>>         service_description             LOAD
>>>>         is_volatile                     0
>>>>         check_period                    24x7
>>>>         max_check_attempts              3
>>>>         normal_check_interval           5
>>>>         retry_check_interval            1
>>>>         contact_groups                  domain-admins
>>>>         check_command                   check_linux_load!2,2,3!3,3,4
>>>> }
>>>>
>>>>
>>>> define command{
>>>>         command_name    check_linux_load
>>>>         command_line    $USER1$/check_snmp_load.pl -H $HOSTADDRESS$ -C
>>>> public -w $ARG1$ -c $ARG2$ -L
>>>> }
>>>>
>>>>
>>>> $USER1$=/opt/nagios/plugins
>>>>
>>>> [root at cartier plugins]# ls -l /opt/nagios/plugins/check_snmp_load.pl
>>>> -rwxr-xr-x  1 root root 14168 Aug 22 12:42
>>>> /opt/nagios/plugins/check_snmp_load.pl
>>>>
>>>> Thanks,
>>>>
>>>> --Dennis
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>>>>
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>>>> _______________________________________________
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>>>
>>>
>>> -------------------------------------------------------
>>> SF.Net email is Sponsored by the Better Software Conference & EXPO
>>> September 19-22, 2005 * San Francisco, CA * Development Lifecycle
>> Practices
>>> Agile & Plan-Driven Development * Managing Projects & Teams * Testing &
>> QA
>>> Security * Process Improvement & Measurement *
>> http://www.sqe.com/bsce5sf
>>> _______________________________________________
>>> Nagios-users mailing list
>>> Nagios-users at lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/nagios-users
>>> ::: Please include Nagios version, plugin version (-v) and OS when
>> reporting any issue.
>>> ::: Messages without supporting info will risk being sent to /dev/null
>>>
>>
>> --
>

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