Eureka Server的同步遵循着一个非常简单的原则，只要有一条边将节点连接，就可以进行信息传播和同步
由于Eureka Server进行相互注册的方式来实现高可用的部署，所以我们只需要将Eureka Server配置其它可用的serviceUrl就能实现高可用部署
1.在pom文件中添加相应依赖
<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>me.shijunjie</groupId> <artifactId>SimpleEurekaServer</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>SimpleEurekaServer</name> <description>SimpleEurekaServer</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.2.RELEASE</version> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Camden.SR6</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-eureka-server</artifactId> </dependency> <dependency> <groupId>org.yaml</groupId> <artifactId>snakeyaml</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </dependency> </dependencies> <build> <finalName>SimpleEurekaServer</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <!--这里写上main方法所在类的路径 --> <configuration> <mainClass>me.shijunjie.SimpleEurekaServer.BootStrap</mainClass> </configuration> <executions> <execution> <goals> <goal>repackage</goal> </goals> </execution> </executions> </plugin> </plugins> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> <include>**/*.yml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resource</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> <include>**/*.yml</include> </includes> <filtering>false</filtering> </resource> </resources> </build> </project>
2.在application.yml中分别添加peer1和peer2的配置
---
server:
port: 8761
spring:
profiles: peer1
application:
name: simple-eureka
eureka:
instance:
ip-address: 192.168.1.7
prefer-ip-address: true
server:
enableSelfPreservation: false #关闭自我保护，默认60秒后剔除失效服务
# evictionIntervalTimerInMs: 4000 默认60s
client:
# registerWithEureka: false
# fetchRegistry: false
service-url:
defaultZone: http://eureka:eureka@192.168.1.21:8761/eureka
security: #开启认证
basic:
enabled: true
user:
name: eureka
password: eureka
...
---
server:
port: 8761
spring:
profiles: peer2
application:
name: simple-eureka
eureka:
instance:
ip-address: 192.168.1.21
prefer-ip-address: true
server:
enableSelfPreservation: false #关闭自我保护，默认60秒后剔除失效服务
# evictionIntervalTimerInMs: 4000 默认60s
client:
# registerWithEureka: false
# fetchRegistry: false
service-url:
defaultZone: http://eureka:eureka@192.168.1.7:8761/eureka
security: #开启认证
basic:
enabled: true
user:
name: eureka
password: eureka
...
3.为了实现在启动的时候能够指定使用peer1还是peer2的配置，需要对启动类做一下修改（在用jar包启动的时候可以写java -jar xxx.jar peer1或java -jar xxx.jar peer2来启动）
package me.shijunjie.SimpleEurekaServer; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.builder.SpringApplicationBuilder; import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer; @SpringBootApplication @EnableEurekaServer //@PropertySource("classpath:application.yml") public class BootStrap { public static void main(String[] args) { String profile = args[0]; new SpringApplicationBuilder(BootStrap.class).profiles(profile).run(args); } }
4.分别为peer1 和 peer2 创建Dockerfile，用来构建Docker镜像，由于部署在两个虚拟机，所以我这边可以用相同的端口号
peer1的Dockerfile
FROM java:8 MAINTAINER junjieshi ADD SimpleEurekaServer.jar app.jar RUN bash -c 'touch /app.jar' EXPOSE 8761 ENTRYPOINT ["java", "-jar","/app.jar","peer1"]
pee2的Dockerfile
FROM java:8 MAINTAINER junjieshi ADD SimpleEurekaServer.jar app.jar RUN bash -c 'touch /app.jar' EXPOSE 8761 ENTRYPOINT ["java", "-jar","/app.jar","peer2"]
整个目录如下：
5.通过Dockerfile分别创建peer1和peer2的镜像（对Docker不了解的可以先去学习下Docker）
6.构建镜像完成后可以看到如下镜像
7.通过镜像启动容器
8.分别启动peer1和peer2后，输入xxx:8761,可以看到如图所示，说明部署成功
附上代码
https://github.com/JunjieShiChina/SimpleEurekaServer.git