eureka-集群

1.集群原理

互相注册，相互守望

2.实现

(1)新建eureka-server1001工程

(2)导入jar包

　　<properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Hoxton.SR4</spring-cloud.version>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

(3)在启动类上加入@EnableEurekaServer注解

(4)新建application.yml

spring:
  application:
    name: eureka-server1001　　　　#工程名
server:
  port: 1001　　　　#端口号
eureka:
  instance:
    namespace: 127.0.0.1　　　　#实例地址
  client:
    register-with-eureka: false　　#是否注册自己
    fetch-registry: false　　　　#是否检索服务
    service-url:
      defaultZone: http://${eureka.instance.namespace}:1002/eureka/　　　　#注册中心地址

(5)新建eureka-server1002工程

(6)导入jar包

(7)在启动类上加入@EnableEurekaServer注解

(8)新建application.yml

spring:
  application:
    name: eureka-server1002　　　　#工程名
server:
  port: 1002　　　　#端口号
eureka:
  instance:
    namespace: 127.0.0.1　　　　#实例地址
  client:
    register-with-eureka: false　　#是否注册自己
    fetch-registry: false　　　　#是否检索服务
    service-url:
      defaultZone: http://${eureka.instance.namespace}:1001/eureka/　　　　#注册中心地址