High-availability configuration for Spring Cloud config Server

First look at the configuration of official documents

---spring:  profiles: peer1eureka:  instance:    hostname: peer1  client:    serviceUrl:      defaultZone: http://peer2/eureka/---spring:  profiles: peer2eureka:  instance:    hostname: peer2  client:    serviceUrl:      defaultZone: http://peer1/eureka/

两台注册中心的高可用的时候，就是分别注册到对方上去


同理，三台以上的时候

---spring:  profiles: peer1eureka:  instance:    hostname: peer1  client:    serviceUrl:      defaultZone: http://peer2/eureka/,http://peer3/eureka/---spring:  profiles: peer2eureka:  instance:    hostname: peer2  client:    serviceUrl:      defaultZone: http://peer1/eureka/,http://peer3/eureka/

---spring:  profiles: peer3eureka:  instance:    hostname: peer3  client:    serviceUrl:      defaultZone: http://peer1/eureka/,http://peer2/eureka/

不论多少台主机，都是将自己注册到除了自己之外的其他注册中心上去
不过这里有一个小问题，就是peer是一个主机名，如果想要使用还需要在host文件中配置，如果想要简单一点，只用ip就可以了。

---spring:  profiles: peer1
server:
  port: 8761eureka:  instance:  client:    serviceUrl:      defaultZone: http://127.0.0.1:8762/eureka/,http://127.0.0.1:8763/eureka/---spring:  profiles: peer2
server:
  port: 8762eureka:  instance:  client:    serviceUrl:      defaultZone: http://127.0.0.1:8761/eureka/,http://127.0.0.1:8763/eureka/

---spring:  profiles: peer3
server:
  port: 8763 eureka:  instance:  client:    serviceUrl:      defaultZone: http://127.0.0.1:8761/eureka/,http://127.0.0.1:8762/eureka/

这样就可以了，而且官方文档也是这么说的

  如果您在一台知道自己的主机名的机器上运行（默认情况下使用java.net.InetAddress查找），则不需要eureka.instance.hostname。

High-availability configuration for Spring Cloud config Server