Java Management Extensions (JMX) provide a standard mechanism to monitor and manage applications.
By default, Spring Boot exposes management endpoints as JMX MBeans under the org.springframework.boot
domain.
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
:
spring.jmx.unique-names=true management.endpoints.jmx.domain=com.example.myapp
If you do not want to expose endpoints over JMX, you can set the management.endpoints.jmx.exposure.exclude
property to *
, as shown in the following example:
management.endpoints.jmx.exposure.exclude=*
Jolokia is a JMX-HTTP bridge that provides an alternative method of accessing JMX beans.
To use Jolokia, include a dependency to org.jolokia:jolokia-core
.
For example, with Maven, you would add the following dependency:
<dependency> <groupId>org.jolokia</groupId> <artifactId>jolokia-core</artifactId> </dependency>
The Jolokia endpoint can then be exposed by adding jolokia
or *
to the management.endpoints.web.exposure.include
property.
You can then access it by using /actuator/jolokia
on your management HTTP server.
Note | |
---|---|
The Jolokia endpoint exposes Jolokia’s servlet as an actuator endpoint. As a result, it is specific to servlet environments such as Spring MVC and Jersey. The endpoint will not be available in a WebFlux application. |
Jolokia has a number of settings that you would traditionally configure by setting servlet parameters.
With Spring Boot, you can use your application.properties
file.
To do so, prefix the parameter with management.endpoint.jolokia.config.
, as shown in the following example:
management.endpoint.jolokia.config.debug=true