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搭建 Eureka 集群主要是提高集群的高可用性,防止当其中某一个 Eurera 注册机器宕机时不能够对外提供服务。 <br/> 搭建步骤如下: **1. 搭建思路** 先搭建三个 Eureka 注册中心,然后分别往这三个 Eureka 中注册 payment8001 微服务。 ``` 三个 Eureka 服务注册中心我已经提前搭建好了,模块名称如下: assemb-server-eureka7001 assemb-server-eureka7002 assemb-server-eureka7003 ``` **2. 三个 Eureka 注册中心的配置** 1. eureka7001注册中心配置。 ```yml server: port: 7001 spring: application: name: assemb-server-eureka eureka: instance: hostname: www.eureka7001.com client: fetch-registry: false register-with-eureka: false service-url: #将其他eureka注册地址写到这里,但是当前eureka模块的注册地址不要写 defaultZone: http://www.eureka7002.com:7002/eureka/,http://www.eureka7003.com:7003/eureka/ server: enable-self-preservation: true eviction-interval-timer-in-ms: 2000 ``` 2. eureka7002 注册中心配置。 ```yml server: port: 7002 spring: application: name: assemb-server-eureka eureka: instance: hostname: www.eureka7002.com client: fetch-registry: false register-with-eureka: false service-url: #将其他eureka注册地址写到这里,但是当前eureka模块的注册地址不要写 defaultZone: http://www.eureka7001.com:7001/eureka/,http://www.eureka7003.com:7003/eureka/ server: enable-self-preservation: true eviction-interval-timer-in-ms: 2000 ``` 3. eureka7003 注册中心配置。 ```yml server: port: 7003 spring: application: name: assemb-server-eureka eureka: instance: hostname: www.eureka7003.com client: fetch-registry: false register-with-eureka: false service-url: #将其他eureka注册地址写到这里,但是当前eureka模块的注册地址不要写 defaultZone: http://www.eureka7001.com:7001/eureka/,http://www.eureka7002.com:7002/eureka/ server: enable-self-preservation: true eviction-interval-timer-in-ms: 2000 ``` >[info]注意:他们的`spring.application.name`要一致。 **3. 将 payment8001 微服务注册到三个 Eureka 注册中心中,他的 Eureka 配置如下** ```yml server: port: 8001 spring: application: name: assemb-server-payment eureka: client: service-url: #写上所以注册中心的地址 defaultZone: http://www.eureka7001.com:7001/eureka/,http://www.eureka7002.com:7002/eureka/,http://www.eureka7003.com:7003/eureka/ instance: instance-id: ${spring.application.name}${server.port} prefer-ip-address: true lease-renewal-interval-in-seconds: 1 lease-expiration-duration-in-seconds: 2 ``` **4. 验证集群是否搭建成功** 1. 先分别启动三个 Eureka 注册中心,然后再启动 payment8001微服务。 2. 分别访问三个 Eureka 注册中心,可以看到每个 Eureka 除了自己外,还有两个备用的,并且 payment8001 微服务都入住了三个 Eureka 注册中心。 :-: ![](https://img.kancloud.cn/aa/f7/aaf7e2156867aa5c70dca5d06278b7d2_2249x468.png) http://www.eureka7001.com:7001/ <br/> :-: ![](https://img.kancloud.cn/56/c6/56c60487b21eedff0932661cf73962ad_2013x444.png) http://www.eureka7002.com:7002/ <br/> :-: ![](https://img.kancloud.cn/7d/54/7d540aaed73c34dba624832a1e899d9a_2175x465.png) http://www.eureka7003.com:7003/