【基礎篇】Spring Cloud 系列之一（eureka-server）

目標：把eureka-server跑起來

一、建立一個simple maven 工程

二、pom.xml配置文件：

pom.xml

<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>

	<groupId>com.company</groupId>
	<artifactId>eureka-server</artifactId>
	<version>1.0.0</version>
	<packaging>jar</packaging>

	<name>eureka-server</name>
	<url>http://maven.apache.org</url>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>

	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>Edgware.RELEASE</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

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

</project>

三、resources資源文件加入application.yml
 

server:
  port: 8761

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

四、建立類：Application.java
 

package com.company.eureka.server;

import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication
@EnableEurekaServer
public class Application {

    public static void main(String[] args) {
        new SpringApplicationBuilder(Application.class).web(true).run(args);
    }

}

五、啓動，訪問：http://localhost:8761/

六、集羣

1）application-peer1.yml    

eureka.instance.hostname:peer1
eureka.client.serviceUrl.defaultZone:http://peer2:8762/eureka/

2）application-peer2.yml 

eureka.instance.hostname:peer2
eureka.client.serviceUrl.defaultZone:http://peer1:8761/eureka/

3）啓動

java -jar eureka-server.jar --spring.profiles.active=peer1
java -jar eureka-server.jar --spring.profiles.active=peer2