Hi there, I have been able to separate the different logs of differents web applications in a shared host using a sift appender like this one: <appender name="SIFT" class="ch.qos.logback.classic.sift.SiftingAppender"> <discriminator class="ch.qos.logback.classic.sift.JNDIBasedContextDiscriminator"> <defaultValue>unknown</defaultValue> </discriminator> <sift> <appender name="FILE-${contextName}" class="ch.qos.logback.core.FileAppender"> <file>${catalina.base}/logs/logback-${contextName}.log</file> <append>true</append> ... </appender> </sift> </appender> And so far, it works great. My question now would be if it is possible to set different levels for the different contexts in an easy way. I know I can copy the library on each application and use a different configuration file per webapp (not using logback for the global Tomcat then) and I have been able to use Filter to simulate the level setting per context by setting the level to the Max and then filtering out the levels by context... but I was wondering if there is no easier way to do it, as adding filter code for each webapp makes the configuration look fragile and bloated. I have 28 small-medium apps in this host, so that's why I'm trying to find the simplest way :). So I guess I'm looking for something like.. <logger name="org.whatever" level="INFO" context="MyApp"...> Does something like that exist and I was unable to find it? If no, do you think it would be intesting? I might give it it shot if that's the case. Cheers! D. ------------------------------------------- Daniel Lopez Janariz (D.Lopez@uib.es) Web Services Balearic Islands University (SPAIN) -------------------------------------------