Use a ServletContextListener to put the application name into the MDC (servletContext.getServletContextName()) when the app starts. Then you can configure filters to allow you to log different application to different places, and you can use the MDC in the log output. As a general rule a web app that isn't part of an EAR should be deployed on a standalone basis, so you shouldn't really be deploying your jars & config to Tomcat/lib - that's outside the servlet specification. I know it seems a little wasteful to have the same jars in every web-inf/lib directory, but it's not really taking up much space. ----- Original Message ----- From: "Ryan Cornia" <rcornia@myriad.com> To: logback-user@qos.ch Sent: Wednesday, 11 February, 2009 16:57:17 GMT +00:00 GMT Britain, Ireland, Portugal Subject: [logback-user] Logback with Tomcat and multiple web applications I've been struggling with this in Log4J, and am wondering if it's possible in Logback. If I have tomcat, with several web applications, can I have one instance of the logback jars in Tomcat/lib, and one configuration file, but distinguish between applications via variable substitution and the pattern? We are logging to SYSLOG, so I would like the pattern to include the application name. I looked through the manual, and see you can use variable substitution for specifying different files, but does substitution work in the pattern field? Can the ContextJNDISelector use a configuration file outside of the war? Ideally I would have the logging configuration file in tomcat/conf or somewhere, and have all applications use the same one. Thanks for any help! _______________________________________________ Logback-user mailing list Logback-user@qos.ch http://qos.ch/mailman/listinfo/logback-user