catalina.out is just the sink for System.out and System.err, it's not managed by logging facilities. It's not even seen by jvm, as the redirection is done in the startup script (using the shell '>' redirector). If you configure a log4j logger for tomcat that uses an other file (see below our simple config) and teach all your webapps to not use stdout and stderr, you shouldn't see anymore things appear in catalina.out. If you still need rolling of file during startup, you will need to ask external tools (like unix logrotate) to do it for you.

......common/classes# cat log4j.properties
log4j.rootLogger=INFO, R
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=........./logs/tomcat.log
log4j.appender.R.MaxFileSize=30MB
log4j.appender.R.MaxBackupIndex=20
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n


En l'instant précis du 11/02/08 17:39, Amir Fadaghi s'exprimait en ces termes:
Hi,

I am trying to implement the catalina.out log rotation in the development 
environment (for now and will implement to other environments once I figure 
this out) using log4j.  I am running apache-tomcat version 5.5.25 and 
downloaded the apache-log4j-1.2.15 and commons-logging-1.1.1.  I copied the 
log4j.jar and commons-logging.jar into the $CATALINA_HOME/lib and created the 
log4j.properties in the common/classes.  However, when I stop and start the 
apache-tomcat the cataline.out is not rotating.

 Here is the my directory listings in the commons/lib direcotry and 
commons/classes directory:

/usr/local/apache-tomcat-5.5.25/common:
ls lib
commons-el.jar             jasper-runtime.jar         naming-factory.jar
commons-logging-1.1.1.jar  jsp-api.jar                naming-resources.jar
jasper-compiler-jdt.jar    log4j-1.2.15.jar           servlet-api.jar
jasper-compiler.jar        naming-factory-dbcp.jar

should I change the highlighted filenames to commons-logging.jar and, log4j.jar?

/usr/local/apache-tomcat-5.5.25/common:
ls classes
log4j.properties

tail classes/log4j.properties

#
# Application logging options
#
#log4j.logger.org.apache=DEBUG
log4j.logger.org.apache=INFO
#log4j.logger.org.apache.struts=DEBUG
#log4j.logger.org.apache.struts=INFO

is the above line uncommented correct for rotating catalina.out rotation?

My environment is:
Sun Solaris 10

I thank you for any help you provide.



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