ActiveMQ Artemis: Change log level online

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Is there any way to change the ActiveMQ Artemis logging configuration online? Sometimes it is helpful to increase the level to TRACE or DEBUG without restarting the broker instance.

activemq-artemis logging configuration
1 Answers

You can use the java.util.logging:type=Logging MBean to inspect and change the level of individual loggers. The ActiveMQ Artemis web console exposes this via the "JMX" tab, e.g.:

logging config

Keep in mind:

  • This won't change the level of the relevant handlers in your etc/logging.properties so if you set a logging to TRACE but the level for the handler is only DEBUG then you'll only get DEBUG logging.
  • These changes are volatile. As soon as the broker is restarted the changes will be lost.

Lastly, it's worth noting that by default changes in etc/logging.properties are picked up dynamically by the broker at runtime so if you have access to that file it might be a better option to change it directly.

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