Why Tomcat Appserver Dashboard is empty or why Tomcat JMX Metric is empty?

dominikus_randy — Tue, 03 Jan 2023 02:41:53 GMT

Why Tomcat Appserver Dashboard is empty or why Tomcat JMX Metric is empty?

If I go to Tomcat process dashboard -> Appserver dashboard is empty

And all JMX metrics are empty

Root Cause:

This issue happened when Tomcat is loaded by the Spring Boot framework. By default, the Spring Boot framework disabled the JMX MBean.

Solution:

The JMX Mbean can be registered in Spring Boot by setting the below parameter to true:

 server.tomcat.mbeanregistry.enabled

Refer to https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.2.0-M4-Release-Notes#tomcats-mbean-registry , quoted below:

Tomcat’s MBean Registry

Tomcat’s MBean Registry is now disabled by default, saving approximately 2MB of heap. If you want to use Tomcat’s MBeans, for example so that they can be used to expose metrics via Micrometer, set the server.tomcat.mbeanregistry.enabled to true.

Re: Why Tomcat Appserver Dashboard is empty or why Tomcat JMX Metric is empty?

ChadTurner — Tue, 10 Jan 2023 15:17:06 GMT

Thanks for sharing this easy fix @dominikus_randy

article Why Tomcat Appserver Dashboard is empty or why Tomcat JMX Metric is empty? in Troubleshooting

Why Tomcat Appserver Dashboard is empty or why Tomcat JMX Metric is empty?

Why Tomcat Appserver Dashboard is empty or why Tomcat JMX Metric is empty?

Root Cause:

Solution:

Re: Why Tomcat Appserver Dashboard is empty or why Tomcat JMX Metric is empty?