希望搭建Eureka集群，配置三个实例却总有一台注册不上？

Question

下面是我的eureka配置信息：

spring:
  application:
    name: eureka-server
  profiles: master
server:
  port: 8001
eureka:
  instance:
    hostname: master
    lease-renewal-interval-in-seconds: 30
    lease-expiration-duration-in-seconds: 30
    prefer-ip-address: true
  client:
    serviceUrl:
      defaultZone: http://backup2:8003/eureka/, http://backup1:8002/eureka/
    fetch-registry: true
    register-with-eureka: true

---
spring:
  application:
    name: eureka-server
  profiles: backup1
server:
  port: 8002
eureka:
  instance:
    hostname: backup1
    lease-renewal-interval-in-seconds: 30
    lease-expiration-duration-in-seconds: 30
    prefer-ip-address: true
  client:
    fetch-registry: true
    register-with-eureka: true
    serviceUrl:
      defaultZone: http://master:8001/eureka/, http://backup2:8003/eureka/


---
spring:
  application:
    name: eureka-server
  profiles: backup2
server:
  port: 8003
eureka:
  instance:
    lease-renewal-interval-in-seconds: 30
    lease-expiration-duration-in-seconds: 30
    hostname: backup2
    prefer-ip-address: true
  client:
    fetch-registry: true
    register-with-eureka: true
    serviceUrl:
      defaultZone: http://master:8001/eureka/, http://backup1:8002/eureka/

Answer 1

经过尝试将以下两条配置去掉即可。

fetch-registry: true
register-with-eureka: true

Answer 2

hostname 有配置hosts文件吗？

Answer 3

eureka配置不是要每个上面写上集群所有节点么；
自己也要写上，三个节点都是：
client:

serviceUrl:
  defaultZone: http://master:8001/eureka/,http://backup2:8003/eureka/, http://backup1:8002/eureka/