JBoss logging subsystem configuration define lower level logger for a specific package

Question

Is it possible in JBoss logging subsystem configuration to set root log level to "INFO" and to define lower level such as "DEBUG" for a specific package ?

Answer 1

Yes, that is possible. For clarity loggers are defined by names and not packages. That said, the typical logger names are class/package names. If you have a class named org.wildfly.example.SimpleResource and you get the logger like Logger.getLogger(SimpleResource.class) your logger name is org.wildfly.example.SimpleResource.

By default the root logger is set to INFO. If you want to add debug logging for your logger, you can do that in CLI or the HAL web console. A CLI example would look like:

/subsystem=logging/logger=org.wildfly.example.SimpleResource:add(level=DEBUG)

If you want to see debug messages on the console you likely need to do something like this too:

/subsystem=logging/console-handler=CONSOLE:write-attribute(name=level, value=DEBUG)

You can also be more generic with the logger name to add debugging for all loggers within the name segments.

/subsystem=logging/logger=org.wildfly.example:add(level=DEBUG)