The spring cloudAlibaba gateway reported an error, indicating that it could not find the registration center to register itself.

The spring cloudAlibaba gateway reported an error, indicating that it could not find the registration center to register itself.

1. Error message

2020-12-29 11:10:18.521  WARN 232 --- [freshExecutor-0] c.n.d.s.t.d.RetryableEurekaHttpClient    : Request execution failed with message: java.net.ConnectException: Connection refused: connect
2020-12-29 11:10:18.521 ERROR 232 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_CLOUD-GATEWAY/tyeerth:cloud-gateway:9527 - was unable to refresh its cache! status = Cannot execute request on any known server
    com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.9.13.jar:1.9.13]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) ~[eureka-client-1.9.13.jar:1.9.13]
	a

2. In the startup class

@SpringBootApplication(exclude= {
    
    DataSourceAutoConfiguration.class})
@EnableEurekaClient

• Using this annotation, the client will automatically search for the Eureka Server. If it cannot find it, it will report this error. But we are using the nacos registration center, so an error is reported.

3. Solve

• Just disable the automatic search for the registration center.

• eureka:
    client:
      register-with-eureka: false
      fetch-registry: false
  
  

• Here we use nacos registration center

  cloud:
      nacos:
        discovery:
          server-addr: localhost:8848 #配置Nacos地址,注册到nacos注册中心