Spring Cloud ZooKeeper Discovery Client Not Register on ZooKeeper when using SpringBootServletInitializer

I have a spring boot application that use spring-cloud-stater-zookeeper-discovery to register the service, but it doesn’t work.

1. the application is deployed as a WAR.

    @SpringBootConfiguration
    @EnableAutoConfiguration
    @EnableDiscoveryClient
    public class MyApplication extends SpringBootServletInitializer {
    
        @Override
        protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
            return application.sources(MyApplication.class)
                    .properties("spring.cloud.zookeeper.discovery.instance-host=" + getHostName())
                    .web(true);
        }
    }
    

2. the application has connected to the zookeeper instance. Ping messages to zookeeper can be seen in the application’s log and the output of STAT command shows a connected zookeeper client.

3. the application does not register watchers to appointed zookeeper path, i.e., /services. This can be confirmed by sending WCHC command to the zookeeper.

Spring Boot version: 1.5.9

spring-cloud-stater-zookeeper-discovery: 1.2.0.RELEASE

web container: tomcat 8.5.23

[rodoc81]

I got the same issue with newer version:

• Spring Boot version: 2.1.0.RELEASE
• spring-cloud-stater-zookeeper-discovery: 2.1.0.M1
• web container: tomcat 8.5.34

I used suggested solution above by @spencergibb . I’m using properties to set the port so don’t need the first part.

@Autowired private ZookeeperAutoServiceRegistration serviceRegistration;

@EventListener(ApplicationStartedEvent.class)
public void init(final ApplicationStartedEvent event) {
    serviceRegistration.start();
}

[weihubeats]

I also encountered a similar problem, mainly caused by the inconsistency of the ZooKeeper server and java client versions. Changing to a consistent version can solve the problem