springcloud-eureka--集群搭建

用集群搭建，可以更好的来提供服务，即使某一个机子down，也可以使注册中心不会直接挂掉

单机

	server:
	port: 8761
	spring:
	application:
	name: eureka-server
	eureka:
	server:
	eviction-interval-timer-in-ms: 10000
	renewal-percent-threshold: 0.85
	instance:
	hostname: localhost
	instance-id: ${eureka.instance.hostname}:${spring.application.name}:${server.port}
	prefer-ip-address: true
	lease-renewal-interval-in-seconds: 5

集群

1. 创建多个eureka服务端
2. 配置yml文件

注意

1. port端口不可重复
2. 应用名要一致
3. 要向其他的各个服务端注册

	server:
	port: 8761
	spring:
	application:
	name: eureka-server
	eureka:
	client:
	service-url:
	defaultZone: http://peer2:8762/eureka, http://peer3:8763/eureka
	instance:
	hostname: peer1
	instance-id: ${eureka.instance.hostname}:${spring.application.name}:${server.port}
	prefer-ip-address: true
	lease-renewal-interval-in-seconds: 5

集群终极方案

1. 一台服务端
2. 向各个服务端注册(包括自己)
3. 启动时，复制需要的springboot配置，修改其中的port端口

	server:
	port: 8761
	spring:
	application:
	name: eureka-server
	eureka:
	client:
	service-url:
	defaultZone: http://peer1:8761/eureka, http://peer2:8762/eureka, http://peer3:8763/eureka
	instance:
	instance-id: ${spring.application.name}:${server.port}
	prefer-ip-address: true
	lease-renewal-interval-in-seconds: 5