是什麼

幹嘛用

怎麼用

加依賴

<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-server</artifactId>
        </dependency>
    </dependencies>

Application 入口類

@SpringBootApplication
 

@EnableEurekaServer
public class EurekaServiceApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaServiceApplication.class, args);
    }
}

yml配置檔案

server:
  port: 7004
eureka:
  instance:
    hostname: localhost
  client:
     serviceUrl:
        defaultZone: http://${eureka.instance
 
.hostname}:${server.port}/eureka/

訪問瀏覽器，發現ok了， 這裡沒有配置忽略自己成為服務，啟動會報錯，

配置高可用

host檔案

127.0.0.1 x1
127.0.0.1 x2
127.0.0.1 x3

配置中心

partition:
   host1:
      name: x1
      port: 7003
   host2:
      name: x2
      port: 7004
   host3:
      name: x3
      port: 7005
   host4:
      name: localhost
      port: 7006
 
 #

eureka配置檔案 x3(eureka記得配置檔案的名字改為bootstrap.yml）

server:
  port: ${partition.host3.port}
eureka:
  instance:
    hostname: ${partition.host3.name}
  client:
     serviceUrl:
        defaultZone: http://${partition.host1.name}:${partition.host1.port}/eureka/,http://${partition.host2.name}:${partition.host2.port}/eureka/

spring:
  cloud:
    config:
      allow-override: false
      #label: master
      profile: dev
      uri: http://10.10.8.101:7000
  application:
    name: eureka-service3

eureka配置檔案 x2(eureka記得配置檔案的名字改為bootstrap.yml）

server:
  port: ${partition.host2.port}
eureka:
  instance:
    hostname: ${partition.host2.name}
  client:
     serviceUrl:
        defaultZone: http://${partition.host1.name}:${partition.host1.port}/eureka/,http://${partition.host3.name}:${partition.host3.port}/eureka/

spring:
  cloud:
    config:
      allow-override: false
      #label: master
      profile: dev
      uri: http://10.10.8.101:7000
  application:
    name: eureka-service2

eureka配置檔案 x1(eureka記得配置檔案的名字改為bootstrap.yml）

server:
  port: ${partition.host1.port}
eureka:
  instance:
    hostname: ${partition.host1.name}
  client:
     serviceUrl:
        defaultZone: http://${partition.host2.name}:${partition.host2.port}/eureka/,http://${partition.host3.name}:${partition.host3.port}/eureka/

spring:
  cloud:
    config:
      allow-override: false
      #label: master
      profile: dev
      uri: http://10.10.8.101:7000
  application:
    name: eureka-service1

三臺eureka 實現倆倆互聯。

客戶端的使用

引入jar

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>

配置檔案

eureka:
  client:
    service-url:
      defaultZone: http://x1:7003/eureka/,http://x2:7004/eureka/,http://x3:7005/eureka/

Application 入口類加入 @EnableEurekaClient

@SpringBootApplication
@EnableEurekaClient
@EnableZuulProxy
public class ZuulServiceApplication {

    public static void main(String[] args) {
        SpringApplication.run(ZuulServiceApplication.class, args);
    }
}