Phenomenon

Some back-end services register with consumer and report an error HTTP get http://xxx/actuator/health: 503 output: {"status": "out_of_service", but other services can be registered normally. Find a way to print thin error messages on the Internet

Print detailed error information

Configure in the error reporting module: application.YML or bootstrap.YML as follows:

management:
  endpoint:
    health:
      show-details: always  
  endpoints:
    web:
      exposure:
        include: '*'    

Or add the following configuration in application.Properties :

management.endpoint.health.show-details=always
management.endpoints.web.exposure.include=*

Finally, after printing the detailed error information, I found that it was the ES cluster. I thought it was the problem of the consumer configuration that led to the wrong direction during troubleshooting.