BeanCreationException: Error creating bean with name 'springApplicationAdminRegistrar'. InstanceAlreadyExistsException

Question

I have 2 spring boot applications.

application_A dependsn_on application_B

Actually each of applications has main class marked as @SpringBootApplicatio

Answer 1

The SpringApplicationAdminJmxAutoConfiguration has the code like:

String jmxName = this.environment.getProperty(JMX_NAME_PROPERTY,
            DEFAULT_JMX_NAME);
    if (this.mbeanExporters != null) { // Make sure to not register that MBean twice
        for (MBeanExporter mbeanExporter : this.mbeanExporters) {
            mbeanExporter.addExcludedBean(jmxName);
        }
    }
    return new SpringApplicationAdminMXBeanRegistrar(jmxName);

Where we have those constants:

/**
 * The property to use to customize the {@code ObjectName} of the application admin
 * mbean.
 */
private static final String JMX_NAME_PROPERTY = "spring.application.admin.jmx-name";

/**
 * The default {@code ObjectName} of the application admin mbean.
 */
private static final String DEFAULT_JMX_NAME = "org.springframework.boot:type=Admin,name=SpringApplication";

So, you should consider to make that jmx-name as unique for each application. I mean you need specify spring.application.admin.jmx-name configuration property.