spring.jmx.enabled property always set to true - spring

Question

Now, I have a problem about setting a property named spring.jmx.enabled
While upgrading the spring version from 2.2.7 to 2.7.0, we found the following error.
ERROR 2022-09-17 23:27:06 [main] o.s.boot.SpringApplication [tid=] - Application run failed
org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [HikariDataSource (some-service-write)] with key 'writeDataSource'; nested exception is javax.management.InstanceAlreadyExistsException: MXBean already registered with name com.zaxxer.hikari:type=PoolConfig (some-service-write)
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:626)
at org.springframework.jmx.export.MBeanExporter.lambda$registerBeans$2(MBeanExporter.java:552)
at java.util.HashMap.forEach(HashMap.java:1289)
at org.springframework.jmx.export.MBeanExporter.registerBeans(MBeanExporter.java:552)
at org.springframework.jmx.export.MBeanExporter.afterSingletonsInstantiated(MBeanExporter.java:435)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:972)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295)
at com.company.team.name.some.SomeServiceApplication.main(SomeServiceApplication.java:16)
Caused by: javax.management.InstanceAlreadyExistsException: MXBean already registered with name com.zaxxer.hikari:type=PoolConfig (some-service-write)
at com.sun.jmx.mbeanserver.MXBeanLookup.addReference(MXBeanLookup.java:151)
at com.sun.jmx.mbeanserver.MXBeanSupport.register(MXBeanSupport.java:160)
at com.sun.jmx.mbeanserver.MBeanSupport.preRegister2(MBeanSupport.java:173)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:930)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
at org.springframework.jmx.support.MBeanRegistrationSupport.doRegister(MBeanRegistrationSupport.java:138)
at org.springframework.jmx.export.MBeanExporter.registerBeanInstance(MBeanExporter.java:672)
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:616)
... 14 common frames omitted
I searched for this error, and most of them answered that can be solved by setting spring.jmx.enabled to false.
However, I checked that the error continues to occur even if the property corrects this value.
Debugging, this value was coming to true.
I injected properties into the Vm Option like -Dspring.jmx.enabled=false, but I confirmed that the same result came.
How can I set this value to false?

Answer 1

if you define in application.propertiers:
spring.datasource.hikari.registerMbeans=true
you have to disable the default Mbean with this config
#Bean
public MBeanExporter exporter() {
final MBeanExporter exporter = new AnnotationMBeanExporter();
exporter.setAutodetect(true);
exporter.setExcludedBeans("dataSource");
return exporter;
}
for more details : https://github.com/brettwooldridge/HikariCP/issues/342

Answer 2

Make sure you do not have #EnableMBeanExport on your application configuration. It can override the external property.
Learn more about this annotation here: https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/context/annotation/EnableMBeanExport.html

Answer 3

You can try changing the default registration policy as below, it will ignore existing bean.
#Configuration
#EnableMBeanExport(registration = RegistrationPolicy.IGNORE_EXISTING)
public class MXBeansConfig {
}