SpringBoot Allow JMX Registration Policy to be set

Currently the JmxAutoconfiguration sets the RegistrationPolicy to FAIL_ON_EXISTING. However there can be situations where it might be useful to set it to something else like IGNORE_EXISTING.

This could help to workaround the issue with both HikariCP and Spring Boot registering JMX beans.

See https://stackoverflow.com/questions/73896176/spring-boot-hikari-config-not-loaded/73896695#73896695 (for my recommended solution).

And the issue from HikariCP with several other proposed solutions/workaround.

The drawback of those solutions, imho, is that the disable (or at least partially) the auto-configuration from Spring Boot.

Comment From: mhalbritter

Thank you!