Tomcat 5.5 : How to redirect the logging output to one file per web application

How to configure tomcat 5.5 (or 6.0) that the output of stdout and stderr of each web application / context will go to one logfile?

I only managed to get the stderr to a specific logfile - the stdout of the applications still went to catalina.out.

I found the following information, guess this should help you.

Try this,

1. Each application must use its own log4j. You can achieve this by placing log4j.jar in WEB-INF/lib of each application.
2. In each log4j's configuration file (default location is WEB-INF/classes), specify the log file name, e.g. log4j.appender.AppLog.File=${catalina.home}/logs/app1.log.
3. Add swallowOutput="true" for each context so stdout, stderr will go to your own log.

We do this on Tomcat 5.5 but I think it should work on 6.0 also.

EDIT: Here is our META-INF/context.xml:

<?xml version="1.0" encoding="UTF-8"?>
<Context override="true" swallowOutput="true" useNaming="false">
    <WatchedResource>WEB-INF/web.xml</WatchedResource>
    <Manager pathname=""/>
</Context>

Further reading:

• http://tomcat.apache.org/tomcat-5.5-doc/logging.html
• http://tomcat.apache.org/tomcat-6.0-doc/logging.html