eureka之前演示的图片就是集群的,但是没有说如何配置eureka集群的配置方式,这次说下eureka集群的配置。
上图是来自eureka的官方架构图,这是基于集群配置的eureka
源码:08-ms-eureka-server-ha
引入依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
application.yml配置如下(见配置文件application-ha.yml)
spring:
application:
name: microservice-eureka-server-ha
---
spring:
profiles: peer1 # 指定profile=peer1
server:
port: 8761
eureka:
instance:
hostname: peer1 # 指定当profile=peer1时,主机名是peer1
client:
serviceUrl:
defaultZone: http://peer2:8762/eureka/,http://peer3:8763/eureka/ # 将自己注册到peer2这个Eureka上面去
---
spring:
profiles: peer2
server:
port: 8762
eureka:
instance:
hostname: peer2
client:
serviceUrl:
defaultZone: http://peer1:8761/eureka/,http://peer3:8763/eureka/
---
spring:
profiles: peer3
server:
port: 8763
eureka:
instance:
hostname: peer3
client:
serviceUrl:
defaultZone: http://peer1:8761/eureka/,http://peer2:8762/eureka/
配置host文件修改:127.0.0.1 peer1 peer2 peer3
java -jar 项目的jar包 --spring.profiles.active=peer1 java -jar 项目的jar包 --spring.profiles.active=peer2 java -jar 项目的jar包 --spring.profiles.active=peer3
PS:集群其实很好配置,选择点的时候是相互的。A点需要配置B和C点,B点需要配置A和C点,C点配置A和B点。