JMX support for Spring Boot 3 applications

[ChristophEbbers]

As Jolokia support has been dropped in Spring Boot 3, there is currently no easy way to access JMX feature in Spring Boot Admin.

Can this be in enhanced?

[erikpetzold]

Hi @ChristophEbbers

Spring Boot Admin can only show what Spring Boot offers.
Spring Boot 3.0 cannot support Jolokia, as Jolokia does not yet support the jakarta package names.

To fix that

• First Jolokia would need to support the jakarta namespace (Jakarta Servlet API 5.0+ jolokia/jolokia#451)
• Then Spring Boot would need to support it again. From your link: "We hope to reinstate support as the ecosystem gradually adapts to the new package names in Jakarta EE 9."
• Then it will be displayed in Spring Boot Admin (probably no change needed).

Besides that there is a bug in the frontend of Spring Boot Admin 3.0, so it does not show JMX menu entry even when the jolokia endpoint is available (e.g. on a Spring Boot 2.7 client application). We are currently fixing that.

[v3rm0n]

I think Jolokia works now on Spring Boot 3 if you add org.jolokia:jolokia-support-spring on the classpath, more info here https://jolokia.org/reference/html/manual/spring.html