Hello, All! is it possible with logback create "default" properties file with default settings, which can be overwritten in extra config? for example: /opt/tomcat/webapps/app/WEB-INF/classes/logback.xml /opt/tomcat/webapps/app/WEB-INF/classes/logback.properties - "default" (read only) properties, deployed from war-file /opt/tomcat/webapps.config/app/logback.properties - local "override" properties with same names as in "default" config. for example, in "default" logback.properties: log.level.spring = INFO log.flush = true log.rotate = 9 log.size = 1MB in "override" logback.properties: log.level.spring = DEBUG and logback.xml in this case will use ${log.level.spring} from "override" config. if "override" config not exists, or this property in "override" config not exists - then use "default" value from default config, for example, for ${log.size} or ${log.rotate} with Spring Framework this is possible, AFAIK/AFAIU. it will be very useful configure logback in same way. I am try many variants in logback.xml: <property resource="${catalina.base}/webapps.config/app/logback.properties" /> <property resource="logback.properties" /> <property resource="logback.properties" /> <property resource="${catalina.base}/webapps.config/app/logback.properties" /> and so on, but nothing works. can you help me? or this is not possible with logback at all?.. -- Best regards, Gena