The logging levels, listed in order from collecting the most information to the least, are:

• ALL: Logs all events.
• TRACE: Reports finer-grained informational events than the debug level that may be useful to debug an application.
• DEBUG: Reports fine-grained informational events that may be useful to debug an application.
• INFO: Default log level. Reports informational messages that highlight the progress of the application at coarse-grained level.
• WARN: Reports on potentially harmful situations.
• ERROR: Reports on error events that may allow the application to continue running.

Not all agents log at all levels.