Monitoring and Management over JMX

Java Management Extensions (JMX) provide a standard mechanism to monitor and manage applications. By default, this feature is not enabled. You can turn it on by setting the spring.jmx.enabled configuration property to true. Spring Boot exposes the most suitable MBeanServer as a bean with an ID of mbeanServer. Any of your beans that are annotated with Spring JMX annotations (@org.springframework.jmx.export.annotation.ManagedResource, @ManagedAttribute, or @ManagedOperation) are exposed to it.

If your platform provides a standard MBeanServer, Spring Boot uses that and defaults to the VM MBeanServer, if necessary. If all that fails, a new MBeanServer is created.

spring.jmx.enabled affects only the management beans provided by Spring. Enabling management beans provided by other libraries (for example Log4j2 or Quartz) is independent.

See the JmxAutoConfiguration class for more details.

By default, Spring Boot also exposes management endpoints as JMX MBeans under the org.springframework.boot domain. To take full control over endpoint registration in the JMX domain, consider registering your own EndpointObjectNameFactory implementation.

Customizing MBean Names

The name of the MBean is usually generated from the id of the endpoint. For example, the health endpoint is exposed as org.springframework.boot:type=Endpoint,name=Health.

If your application contains more than one Spring ApplicationContext, you may find that names clash. To solve this problem, you can set the spring.jmx.unique-names property to true so that MBean names are always unique.

You can also customize the JMX domain under which endpoints are exposed. The following settings show an example of doing so in application.properties:

  • Properties

  • YAML

spring.jmx.unique-names=true
management.endpoints.jmx.domain=com.example.myapp
spring:
  jmx:
    unique-names: true
management:
  endpoints:
    jmx:
      domain: "com.example.myapp"

Disabling JMX Endpoints

If you do not want to expose endpoints over JMX, you can set the management.endpoints.jmx.exposure.exclude property to *, as the following example shows:

  • Properties

  • YAML

management.endpoints.jmx.exposure.exclude=*
management:
  endpoints:
    jmx:
      exposure:
        exclude: "*"