Raible's Wiki: Tomcat5Logging

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Configuring (and more importantly, supressing) Tomcat 5.x logging

Configuring (and more importantly, supressing) Tomcat 5.x logging using Log4j

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PLEASE NOTE: These instructions are for setting up Tomcat with log4j logging, your web application

can still have its own log4j.properties deployed to its WEB-INF/classes directory..

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You also need to copy commons-logging.jar and log4j-1.2.9.jar to $CATALINA_HOME/common/lib.

You also need to copy commons-logging.jar and log4j-1.2.9.jar to $CATALINA_HOME/common/lib. Note,

some references say copy these files to $CATALINA_HOME/server/lib, but for me, copying to common/lib worked fine.

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It is of course, better practice, to keep your application log4j.properties ROOT log level set to

WARN or ERROR, and just turn on debugging for your own application classes! (ie. org.appfuse=DEBUG )

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Note: If you want Tomcat logging to stdout as well, then your $CATALINA_HOME/common/classes/log4j.properties file should look like this:

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{{{

log4j.rootLogger=ERROR, stdout, TOMCAT

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log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=%d{dd-MM-yy HH:mm:ss:SSS} - {%p} %c{2} Thread [%t]; %x %m%n

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log4j.appender.TOMCAT=org.apache.log4j.DailyRollingFileAppender

log4j.appender.TOMCAT.File=${catalina.home}/logs/tomcat.log

log4j.appender.TOMCAT.DatePattern='.'yyyy-MM-dd

log4j.appender.TOMCAT.layout=org.apache.log4j.PatternLayout

log4j.appender.TOMCAT.layout.ConversionPattern=%d{dd-MM-yy HH:mm:ss:SSS} - {%p} %c{2} Thread [%t]; %x %m%n

}}}

For more on Tomcat 5 see here [Tomcat 5 Upgrade|Tomcat5Upgrade]

For the official Tomcat 5.5 docs on logging see here [Tomcat 5.5 Logging|http://jakarta.apache.org/tomcat/tomcat-5.5-doc/logging.html]

If you cannot get the above instructions to work, then should remove the files you placed within the tomcat

distribution and Tomcat will revert back to using commons logging.

Tomcat5Logging