> From: Johan Martinez [mailto:jmart...@gmail.com]
> Subject: newbie logging question: JULI or log4j or both?
> 
> I am a developer and new to tomcat administration.

Tomcat version?  JVM version?  Platform?

(Always provide the basics when making inquiries.)

> How do I find out if I am using JULI or log4j for logging?

Tomcat logging and webapp logging are independent; you may well be using both, 
perhaps JULI for Tomcat and log4j for one or more webapps.  Where are the 
configuration files located?

> Also, I see logs in catalina.out and tomcat.log.

Standard, supported versions of Tomcat do not normally produce any file named 
"tomcat.log"; if you've got one, someone has fiddled with the default logging 
configuration, or you're running a 3rd-party repackaged version of Tomcat.

The catalina.out file is usually just a redirection of stdout and stderr, and 
normally only appears on Linux/UNIX systems.  If webapps are writing to it, 
then the authors of the webapp were too lazy to utilize a proper logging 
mechanism.

> I would like to customise it with DailyRollingFile, but I don't 
> see it mentioned anywhere.

Look in the startup script you're using to get Tomcat running.

You might want to read through the FAQ entries on logging:
http://wiki.apache.org/tomcat/FAQ/Logging

 - Chuck


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