eureka集群搭建 eureka集群搭建

简介
【eureka集群搭建】用作注册中心的，类似zk。zk实现的是CP，eureka实现的是AP。因为注册中心数据变化不大，而数据可靠性要求较高，所以eureka更适合做注册中心。
使用方式
1.pom文件中增加eureka依赖因为它是一个纯java的项目，所以需要容器启动，目前基本上都是基于springboot项目启动

org.springframework.cloud spring-cloud-starter-netflix-eureka-server

2.spring application启动类中增加注解

@EnableEurekaServer

3.application.yml中增加配置

server: port: 8761 spring: application: name: eureka-master eureka: instance: hostname: localhost prefer-ip-address: true client: register-with-eureka: false fetch-registry: false service-url: defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

4.集群配置如果是集群版的，不能用ip，且application.name必须是同一个,register-with-eureka、fetch-registry必须设置成true,参考配置，底部有配置好的附件

spring: profiles: - node1 application: name: eureka-master eureka: instance: hostname: eureka-master1 prefer-ip-address: false client: register-with-eureka: true fetch-registry: true service-url: defaultZone: http://eureka-master2:8762/eureka/,http://eureka-master3:8763/eureka/ server: port: 8761 ---spring: profiles: - node2 application: name: eureka-master eureka: instance: hostname: eureka-master2 prefer-ip-address: false client: register-with-eureka: true fetch-registry: true service-url: defaultZone: http://eureka-master1:8761/eureka/,http://eureka-master3:8763/eureka/ server: port: 8762--- spring: profiles: - node3 application: name: eureka-master eureka: instance: hostname: eureka-master3 prefer-ip-address: false client: register-with-eureka: true fetch-registry: true service-url: defaultZone: http://eureka-master1:8761/eureka/,http://eureka-master2:8762/eureka/ server: port: 8763