如何使用Eureka Server延迟Eureka客户注册？

Question

I have a Spring Boot application which is also a Eureka client . The normal behavior of the application is to register with Eureka server on start up as UP . I have a requirement that the application shouldn't register with the Eureka server until smoke testing is completed during deployment.

Is there a way to delay the registration with Eureka Server or register as OUT_OF_SERVICE with some type of configuration changes? I am aware of the Eureka REST endpoints to register, unregister, and change status.

Answer 1

设置eureka.instance.initial-status=OUT_OF_SERVICE将注册具有该状态的服务。

Answer 2

I had a similar case where I needed my service to perform some preprocessing before indicating that it was available. I did this by implementing a custom HealthIndicator that starts with a state of OUT_OF_SERVICE and transitions to UP once all of the preprocessing completed. This always seemed a hack to me but it works. Hopefully, Spencer can provide better guidance since he is an author in the Spring ecosystem.

Answer 3

Are you looking for;

eureka.client.initialInstanceInfoReplicationIntervalSeconds=<some N seconds>

This property specifies the initial delay before the clients send health status ie UP etc.