Configure Tomcat logs with Log4j

The Tomcat logs configuration can be handled by Log4j which easily allows to configure Tomcat logs in Cloud environments. The introduced configuration routes all Tomcat logs to log/catalina.log (without the date) with same level as with the JUL configuration under conf/logging.properties . This mechanism will be the default for LTS 2025 and need to be opt-in in LTS 2023. You need to enable the tomcat-logs template for LTS 2023, for example by adding the following to your nuxeo.conf : nuxeo.append.templates.tomcat-logs=tomcat-logs  

If you enable the Tomcat logs with Log4j configuration feature in LTS 2023 you might need to migrate conf/logging.properties to log4j2.xml if you have one. The default conf/logging.properties was migrated to this portion of the default log4j2.xml file: <!-- Tomcat catalina loggers --> <Logger name= "org.apache.catalina" level= "warn" additivity= " false " > <AppenderRef ref= "CATALINA" /> </Logger> <Logger name= "org.apache.catalina.core.AprLifecycleListener" level= "info" /> <Logger name= "org.apache.catalina.core.ContainerBase" level= "info" /> <Logger name= "org.apache.catalina.startup.Catalina" level= "info" > <AppenderRef ref= "CONSOLE" /> </Logger> <Logger name= "org.apache.catalina.startup.VersionLoggerListener" level= "info" /> <!-- Tomcat coyote loggers --> <Logger name= "org.apache.coyote" level= "warn" additivity= " false " > <AppenderRef ref= "CATALINA" /> </Logger> <!-- Tomcat jasper loggers --> <Logger name= "org.apache.jasper" level= "warn" additivity= " false " > <AppenderRef ref= "CATALINA" /> </Logger> The JUL configuration present under conf/logging.properties  will be removed in LTS 2025. The log files: classloader.log , stderr.log , and tomcat.log will also be removed in LTS 2025 as their logs are now written to catalina.log .