SpringCloud（三） eureka集群

Dear 丶 2022-05-23 03:36 236阅读 0赞

根据[  SpringCloud（一） eureka服务注册与发现 ，再增加两个eureka server][SpringCloud_ eureka_ _eureka server]

**Eureka Server的高可用**

Eureka Server的设计一开始就考虑到了高可用的问题，在Eureka的服务治理设计中，所有节点即是服务提供方，也是服务消费方，服务注册也不列外。之前的有配置：  
eureka:  
  client:  
    register-with-eureka: false  
    fetch-registry: false  
让服务注册中心不注册自己。Eureka Server的高可用实际上就是将自己作为服务向其他服务注册中心注册自己，这样就可以形成一组互相注册的服务注册中心，以实现服务清单的互相同步，达到高可用的效果。

因为在一台机器上部署，修改hosts

127.0.0.1       localhost1
    127.0.0.1       localhost2
    127.0.0.1       localhost3

eureka-server1配置文件：

server:
      port: 8761
    eureka:
      instance:
        hostname: localhost1
      client:
        register-with-eureka: true
        fetch-registry: true
        service-url:
          defaultZone: http://localhost2:8762/eureka,http://localhost3:8763/eureka
    spring:
      application:
        name: eureka-server1

eureka-server2配置文件：

server:
      port: 8762
    eureka:
      instance:
        hostname: localhost2
      client:
        register-with-eureka: true
        fetch-registry: true
        service-url:
          defaultZone: http://localhost1:8761/eureka,http://localhost3:8763/eureka
    spring:
      application:
        name: eureka-server2

eureka-server3配置文件：

server:
      port: 8763
    eureka:
      instance:
        hostname: localhost3
      client:
        register-with-eureka: true
        fetch-registry: true
        service-url:
          defaultZone: http://localhost1:8761/eureka,http://localhost2:8762/eureka
    spring:
      application:
        name: eureka-server3

eureka-client spring配置文件：

server:
      port: 8080
    eureka:
      client:
        service-url:
          defaultZone: http://localhost1:8761/eureka,http://localhost2:8762/eureka,http://localhost3:8763/eureka
    spring:
      application:
        name: eureka-client1

先启动所有eureka，在启动客户端

访问：http://localhost:8761/  或http://localhost:8762/ 或http://localhost:8763/

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[SpringCloud_ eureka_ _eureka server]: https://blog.csdn.net/u012326462/article/details/80525039
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