window系统，两个服务都可以启动，显示正常启动但是没有相互注册

Question

异常：
com.netflix.discovery.shared.transport.TransportException: There is no known eureka server; cluster server list is empty
at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:108) ~[eureka-client-1.9.8.jar:1.9.8]
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.9.8.jar:1.9.8]
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59)[eureka-client-1.9.8.jar:1.9.8]atcom.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77)[eureka-client-1.9.8.jar:1.9.8]atcom.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56)[eureka-client-1.9.8.jar:1.9.8]atcom.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:829)[eureka-client-1.9.8.jar:1.9.8]atcom.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121)[eureka-client-1.9.8.jar:1.9.8]atjava.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [na:1.8.0_201]
at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_201]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access201(UnknownSource)[na:1.8.0201]atjava.util.concurrent.ScheduledThreadPoolExecutor201(Unknown Source) [na:1.8.0_201] at java.util.concurrent.ScheduledThreadPoolExecutor201(UnknownSource)[na:1.8.02​01]atjava.util.concurrent.ScheduledThreadPoolExecutorScheduledFutureTask.run(Unknown Source) [na:1.8.0_201]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_201]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_201]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_201]

Answer 1

张勤一 2019-02-20 23:11:41

同学你好：

    从当前的错误来看，是配置文件和启动方式错误导致的。可以参考下下面的这份配置文件：

#spring:
#  application:
#    name: ad-eureka
#
#server:
#  port: 8000
#
#eureka:
#  instance:
#    hostname: localhost
#  client:
#    # eureka.client.fetch-registry: 表示是否从 Eureka Server 获取注册信息，默认为true。如果这是一个单点的 Eureka Server，不需要同步其他节点的数据，设为false
#    fetch-registry: false
#    # eureka.client.register-with-eureka: 表示是否将自己注册到 Eureka Server, 默认为true。由于当前应用就是 Eureka Server, 因此设为 false
#    register-with-eureka: false
#    # 设置 Eureka Server 所在的地址，查询服务和注册服务都需要依赖这个地址
#    service-url:
#      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/


# 配置不同的 Profile, 需要注意, 如果要执行下面的 Profile, 需要将上面的配置注释掉

---
spring:
  application:
    name: ad-eureka
  profiles: server1
server:
  port: 8000
eureka:
  instance:
    hostname: server1
    prefer-ip-address: false
  client:
    service-url:
      defaultZone: http://server2:8001/eureka/,http://server3:8002/eureka/

---
spring:
  application:
    name: ad-eureka
  profiles: server2
server:
  port: 8001
eureka:
  instance:
    hostname: server2
    prefer-ip-address: false
  client:
    service-url:
      defaultZone: http://server1:8000/eureka/,http://server3:8002/eureka/

---
spring:
  application:
    name: ad-eureka
  profiles: server3
server:
  port: 8002
eureka:
  instance:
    hostname: server3
    prefer-ip-address: false
  client:
    service-url:
      defaultZone: http://server1:8000/eureka/,http://server2:8001/eureka/

    另外，需要注意 server1、server2、server3 在 host 中的配置。一切就绪之后，重新编译打包，并执行如下命令：

    java -jar ad-eureka-1.0-SNAPSHOT.jar --spring.profiles.active=server1

    java -jar ad-eureka-1.0-SNAPSHOT.jar --spring.profiles.active=server2

    java -jar ad-eureka-1.0-SNAPSHOT.jar --spring.profiles.active=server3

    欢迎来 QQ 群随时交流、讨论，也非常感谢同学的支持！ 

• 黎明的烬 #1

  单节点的配置注释后打包，工程默认为8080端口访问了。。。。