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From Timothy Lam <>
Subject Tomcat log files
Date Tue, 09 Nov 2010 18:48:34 GMT
I'm trying to clean up Tomcat logging to use log4j.  I've read the Tomcat logging guide that
comes with my version of Tomcat 6.0.28.  I'm really confused with all the different log files
that are being generated in the default Tomcat before log4j configuration.  Why are there
so many different log files: admin, manager, localhost, manager, host-manager, catalina log
files and then System.out and System.err get appended to catalina.out?  What's the purpose
of each of these log files?  When I configure log4j in tomcat I will have this single tomcat.log
file but will that contain everything in the default log files that I previously listed in
addition to catalina.out?  Or will I need to use both tomcat.log and catalina.out to get a
full picture of all of my logging?  I tried to delete the file in my Tomcat
6.0.28 and I get a NoClassDefFoundException in doing so.  So there doesn't seem to be any
way of really removing java.util.logging
from Tomcat in v6.0.28.


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