[Pacemaker] Debug message granularity

[Andrew Beekhof]

On Wed, May 16, 2012 at 1:01 PM, Ron Kerry <rkerry at sgi.com> wrote:
> I think I did not phrase my question correctly. It appears that pacemaker
> and subfunctions like crmd, lrmd, pengine and resource agent script
> themselves inherit their logging level from corosync as defined in
> corosync.conf. The logger_subsys directive in that file offers some help but
> it appears the subsys it talks about only refer to various corosync
> subsystems (and there are over a dozen of them I have counted so far).
>

Right.

> What I want to be able to do is to leave corosync message levels at the
> default info level, but drive the message level for things like crmd, lrmd,
> pengine and/or the resource agent scripts down to the debug level. I do not
> see how to use the logger_subsys{} setting to do this

Correct.

> and I see nothing in
> pacemaker itself that gives me any separate controls over its logging
> verbosity.

Which is why I mentioned:

>>
>> You should be able to define
>> PCMK_trace_functions=nction1,function2,... as an environment

There is also PCMK_trace_files.
Depending on your version you may also be able to set
PCMK_debug=crmd,pengine,... or send SIGUSR1 to the process to increase
the log level

>>
>> variable to get additional information from just those functions.
>> It might take a bit of searching through source code to find the ones
>> you care about, but it is possible.
>>
>> On Wed, May 16, 2012 at 5:58 AM, Ron Kerry<rkerry at sgi.com>  wrote:
>>>
>>> I have a cluster running SLES11 SP2 including SLE-HAE-SP2. This includes
>>> the
>>> following software levels:
>>>  resource-agents-3.9.2-0.25.5
>>>  openais-1.1.4-5.6.3
>>>  corosync-1.4.1-0.13.1
>>>  pacemaker-1.1.6-1.29.1
>>>  pacemaker-mgmt-2.1.0-0.8.74
>>>  pacemaker-mgmt-client-2.1.0-0.8.74
>>>
>>> The only way I know to get debug level messages is to set debug:on in
>>> /etc/corosync/corosync.conf
>>>  logging {
>>>        #Whether or not turning on the debug information in the log
>>>        debug:  on
>>>  }
>>>
>>> Is there any way to get more granularity? I would like to get debug level
>>> information out of my resource agents and perhaps other parts of
>>> pacemaker
>>> like pengine, crmd and lrmd, but not from corosync. Turning debug:on is
>>> very
>>> noisy, but without doing that it is very hard to troubleshoot resource
>>> issues in production clusters. Other times I may be troubleshooting
>>> membership issues and I need detailed corosync messaging. Ideally I would
>>> like to be able to set a (potentially) different message level for each
>>> of
>>> the major components of the HA solution but I see no way to do that
>>> currently. Any advice?
>>>
>>> --
>>>
>>> Ron Kerry         rkerry at sgi.com
>>>
>>>
>>>
>>> _______________________________________________
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>>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>>>
>>> Project Home: http://www.clusterlabs.org
>>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>>> Bugs: http://bugs.clusterlabs.org
>>
>>
>>
>
>
> --
>
> Ron Kerry         rkerry at sgi.com
> Global Product Support - SGI Federal
>