关于SpringCloud微服务云架构构建B2B2C电子商务平台之-（十）高可用的服务注册中心

一、准备工作
Eureka can be made even more resilient and available by running multiple instances and asking them to register with each other. In fact, this is the default behaviour, so all you need to do to make it work is add a valid serviceUrl to a peer, e.g.

摘自官网

Eureka通过运行多个实例，使其更具有高可用性。事实上，这是它默认的熟性，你需要做的就是给对等的实例一个合法的关联serviceurl。

二、改造工作
在eureka-server工程中resources文件夹下，创建配置文件application-peer1.yml:

server:
  port: 8761
 
spring:
  profiles: peer1
eureka:
  instance:
    hostname: peer1
  client:
    serviceUrl:
      defaultZone: http://peer2:8769/eureka/

并且创建另外一个配置文件application-peer2.yml：

server:
  port: 8769
 
spring:
  profiles: peer2
eureka:
  instance:
    hostname: peer2
  client:
    serviceUrl:
      defaultZone: http://peer1:8761/eureka/

这时eureka-server就已经改造完毕。

ou could use this configuration to test the peer awareness on a single host (there’s not much value in doing that in production) by manipulating /etc/hosts to resolve the host names.

按照官方文档的指示，需要改变etc/hosts，linux系统通过vim /etc/hosts ,加上：

127.0.0.1 peer1
127.0.0.1 peer2

windows电脑，在c:/windows/systems/drivers/etc/hosts 修改。

这时需要改造下service-hi:

eureka:
  client:
    serviceUrl:
      defaultZone: http://peer1:8761/eureka/
server:
  port: 8762
spring:
  application:
    name: service-hi

架构代码如下:

扫描二维码关注公众号，回复： 4406399 查看本文章

资料和源码来源地址

技术支持2147775633