The Debug mode in eXo Platform is generally like other Java applications using JDWP that enables debugging by Eclipse.

In Tomcat

In eXo Platform Tomcat, the Debug mode is turned on by appending --debug to the startup command:

./start_eXo.sh --debug

This parameter adds the following JVM option:

-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n

If you want to change the port (address=8000), you have to customize environment variables and edit the following variable: EXO_DEBUG_PORT="8000".

In JBoss

In eXo Platform JBoss, you should provide a port in the startup command: ./bin/standalone.sh --debug 8787.