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Petals ESB Hazelcast Registry Logging specificities
Default levels
The default root logger level is INFO. It means that all classes log only SEVERE, WARNING and INFO information.
You can enable logging and specify a specific level for each module. Here is how you would set debugging from Petals. You would need to ensure the Handler's level is also set to collect this threshold, so FINEST or ALL should be set.
## root logger level .level = INFO ## Petals ESB Registry node level Petals.Registry.Overlay.level = CONFIG ## Hazelcast level com.hazelcast.level = WARNING
Petals formatter
The Petals formatter org.ow2.petals.log.formatter.LogDataFormatter is used for traces of the Petals ESB Hazelcast Registry node. The format of the logged message is :
YYYY/MM/DD HH:MM:SS,FFF GMT LOG LEVEL [LOGGER NAME] : LOG MESSAGE
Example of logging output with the Petals formatter:
2015/05/28 16:25:47,762 GMT+0200 INFO [Petals.Registry.Overlay] : Starting Petals Registry Overlay local member... 2015/05/28 16:25:47,856 GMT+0200 WARNING [Petals.Registry.Overlay] : No JMX user set. The default one will be used. 2015/05/28 16:25:47,856 GMT+0200 WARNING [Petals.Registry.Overlay] : No JMX password set. The default one will be used. 2015/05/28 16:25:47,932 GMT+0200 WARNING [com.hazelcast.instance.DefaultAddressPicker] : [LOCAL] [default-sample] [3.5-SNAPSHOT] Could not find a matching address to start with! Picking one of non-loopback addresses. 2015/05/28 16:25:48,450 GMT+0200 INFO [Petals.Registry.Overlay] : JMX server started at : service:jmx:rmi:///jndi/rmi://localhost:7750/jmxRmiConnector 2015/05/28 16:25:48,451 GMT+0200 INFO [Petals.Registry.Overlay] : Petals Registry Overlay local member started
Using your own log handler
Custom log handlers are supported. See the project source code of Petals providing log handlers to write your own.
Tuning your logging configuration
Petals ESB Hazelcast Registry node starts automatically on Debian-based system
If your Petals ESB Hazelcast Registry nodes used in production are:
- installed on Debian-based systems through Debian packages,
- and, running in automatic mode,
you can disable the log handler 'console' for which all generated traces on the standard output are discarded, and used only a log handler 'file' (java.util.logging.FileHandler, org.ow2.petals.log.handler.PetalsFileHandler according to your needs.
# Configuration of the log handlers ##################################### #handlers=java.util.logging.ConsoleHandler, org.ow2.petals.log.handler.PetalsFileHandler handlers=org.ow2.petals.log.handler.PetalsFileHandler
Petals ESB Hazelcast Registry node starts manually or installed through ZIP archive
If your Petals ESB Hazelcast Registry installation does not satisfy the previous criteria (not running in automatic mode on a Debian-based system), you can improve performance decreasing the level of the log handler 'console':
# Configuration of the handler ConsoleHandler ################################################## java.util.logging.ConsoleHandler.level=INFO java.util.logging.ConsoleHandler.formatter=org.ow2.petals.log.formatter.LogDataFormatter
You can also remove the log handler 'console' but it's disturbing because no more trace will be printed.