springcloud 2.1.2.RELEASE----eureka

新建springboot项目：

1、

2、

3、

4、

5、pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.1.2.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.example</groupId>
   <artifactId>demo</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>demo</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
      <spring-cloud.version>Greenwich.RC2</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>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
      </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>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>

   <repositories>
      <repository>
         <id>spring-milestones</id>
         <name>Spring Milestones</name>
         <url>https://repo.spring.io/milestone</url>
      </repository>
   </repositories>

</project>

6、配置单点配置文件

server:
  port: 8001
eureka:
  instance:
    hostname: localhost
  client:
    register-with-eureka: false
    fetch-registry: false
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

7、配置集群配置文件

pom.xml添加以下部分:

8、resources 目录下添加以下文件

application-peer1.yml、application-peer2.yml、application-peer3.yml

######################################################################
server:
  port: 10001

eureka:
  instance:
    hostname: peer1
  client:
    register-with-eureka: true
    fetch-registry: true
    service-url:
      #设置与Eureka Server交互的地址，查询服务和注册服务都需要依赖这个地址。默认是http://localhost:8761/eureka ；多个地址可使用 , 分隔。
      defaultZone: http://peer2:10002/eureka/,http://peer3:10003/eureka/

#spring.application.name需要一致，否则eureka集群不可用。
spring:
  application:
    name: eureka-server

######################################################################

server:
  port: 10002

eureka:
  instance:
    hostname: peer2
  client:
    register-with-eureka: true
    fetch-registry: true
    service-url:
      #设置与Eureka Server交互的地址，查询服务和注册服务都需要依赖这个地址。默认是http://localhost:8761/eureka ；多个地址可使用 , 分隔。
      defaultZone: http://peer1:10001/eureka/,http://peer3:10003/eureka/

spring:
  application:
    name: eureka-server

######################################################################
 

server:
  port: 10003

eureka:
  instance:
    hostname: peer3
  client:
    register-with-eureka: true
    fetch-registry: true
    service-url:
      #设置与Eureka Server交互的地址，查询服务和注册服务都需要依赖这个地址。默认是http://localhost:8761/eureka ；多个地址可使用 , 分隔。
      defaultZone: http://peer1:10001/eureka/,http://peer2:10002/eureka/

spring:
  application:
    name: eureka-server

9、打成jar包

10、使用命令运行

运行前先修改本地hosts文件。

C:\Windows\System32\drivers\etc 

ping 下 peer1、 peer2、peer3 看是否能ping通

java -jar eureka-server-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer1

java -jar eureka-server-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer2

java -jar eureka-server-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer3

访问 http://127.0.0.1:10001 即可看到集群对应eureka服务。