Apache Tomcat includes a version of the Java utility logger called JULI, which is modified for a container-based environment. Eclipse does not enable JULI by default when it creates new Tomcat servers.
In order to use JULI on your new Eclipse-configured server, copy "conf/logging.properties" from your root Tomcat installation folder into the "conf" folder of your new server. Next, in the Server Configuration menu, click the "Open launch configuration" link located in the "General Information" tab. In the "VM Arguments" field of the resulting Properties dialogue, add the JULI logging switches, as follows: