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Posted to users@tomcat.apache.org by Michelle Warner <wa...@comcast.net> on 2014/12/30 02:55:13 UTC
Tomcat log dropping entries after log rotation
I am using Tomcat 8 with log4j2 to handle application logging. The log4j2.xml and log4j-api-2.0-rc2/jar are both located in the lib folder of Tomcat. After a log rotation, any ERROR log messages or messages associated with a hot deployment stop logging. If I bounce Tomcat, then the logging of those messages is restored.
Any ideas as to what could be causing this? I have not been able to find anything in my searches.
Thanks
Michelle
Re: Tomcat log dropping entries after log rotation
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Hash: SHA256
Michelle,
On 1/3/15 8:15 PM, Michelle Warner wrote:
>
> ----- Original Message ----- From: "Christopher Schultz"
> <ch...@christopherschultz.net> To: "Tomcat Users List"
> <us...@tomcat.apache.org> Sent: Tuesday, December 30, 2014 9:41 AM
> Subject: Re: Tomcat log dropping entries after log rotation
>
>
>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
>>
>> Michelle,
>>
>> On 12/29/14 8:55 PM, Michelle Warner wrote:
>>> I am using Tomcat 8 with log4j2 to handle application logging.
>>> The log4j2.xml and log4j-api-2.0-rc2/jar are both located in
>>> the lib folder of Tomcat. After a log rotation, any ERROR log
>>> messages or messages associated with a hot deployment stop
>>> logging. If I bounce Tomcat, then the logging of those messages
>>> is restored.
>>>
>>> Any ideas as to what could be causing this? I have not been
>>> able to find anything in my searches.
>>
>> How are you performing log rotation?
>>
>> - -chris
>
> I was using the time policy in the log4j2 property file. Had it
> set for one day. But I think I may have found the problem. We
> moved to using a single log file as it helped with trouble shooting
> because of the number of applications and services we have. That
> was our setup in JBoss and now that we are moving to Tomcat we
> wanted the same. So while log4j2 was rotating the log seemingly
> fine, it appears perhaps the problem was with Tomcat still using
> juli internally.
>
> When I set our applications to log to a file other than
> catalina.out then that file rotated fine and there was no loss of
> logging after log rotation. So, while the internals of Tomcat are
> still logging to catalina.out we are able to log our application
> specific stuff and rotate it now without losing logging. Not sure
> how to fix the catalina.out rotation problem with log4j2 other than
> to make our applications use juli or perhaps some other
> implementation.
You can configure Tomcat to use log4j instead of JULI:
http://tomcat.apache.org/tomcat-7.0-doc/logging.html#Using_Log4j
Rotation options for catalina.out:
http://wiki.apache.org/tomcat/FAQ/Logging#Q10
Note that rotating catalina.out should be entirely unnecessary.
- -chris
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Re: Tomcat log dropping entries after log rotation
Posted by Michelle Warner <wa...@comcast.net>.
----- Original Message -----
From: "Christopher Schultz" <ch...@christopherschultz.net>
To: "Tomcat Users List" <us...@tomcat.apache.org>
Sent: Tuesday, December 30, 2014 9:41 AM
Subject: Re: Tomcat log dropping entries after log rotation
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Michelle,
>
> On 12/29/14 8:55 PM, Michelle Warner wrote:
>> I am using Tomcat 8 with log4j2 to handle application logging. The
>> log4j2.xml and log4j-api-2.0-rc2/jar are both located in the lib
>> folder of Tomcat. After a log rotation, any ERROR log messages or
>> messages associated with a hot deployment stop logging. If I
>> bounce Tomcat, then the logging of those messages is restored.
>>
>> Any ideas as to what could be causing this? I have not been able
>> to find anything in my searches.
>
> How are you performing log rotation?
>
> - -chris
I was using the time policy in the log4j2 property file. Had it set for one
day. But I think I may have found the problem. We moved to using a single
log file as it helped with trouble shooting because of the number of
applications and services we have. That was our setup in JBoss and now that
we are moving to Tomcat we wanted the same. So while log4j2 was rotating
the log seemingly fine, it appears perhaps the problem was with Tomcat
still using juli internally.
When I set our applications to log to a file other than catalina.out then
that file rotated fine and there was no loss of logging after log rotation.
So, while the internals of Tomcat are still logging to catalina.out we are
able to log our application specific stuff and rotate it now without losing
logging. Not sure how to fix the catalina.out rotation problem with log4j2
other than to make our applications use juli or perhaps some other
implementation.
Michelle
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Re: Tomcat log dropping entries after log rotation
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Michelle,
On 12/29/14 8:55 PM, Michelle Warner wrote:
> I am using Tomcat 8 with log4j2 to handle application logging. The
> log4j2.xml and log4j-api-2.0-rc2/jar are both located in the lib
> folder of Tomcat. After a log rotation, any ERROR log messages or
> messages associated with a hot deployment stop logging. If I
> bounce Tomcat, then the logging of those messages is restored.
>
> Any ideas as to what could be causing this? I have not been able
> to find anything in my searches.
How are you performing log rotation?
- -chris
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