前言
本文记录怎么搭建服务注册中心eureka，然后打包成docker镜像，用docker swarm部署eureka集群
1、环境
| 环境 | 版本及说明 | 参考地址 |
|---|---|---|
| docker | v1.13.1,Docker是一个能够把开发的应用程序自动部署到容器的开源引擎 | http://www.cnblogs.com/520playboy/p/7910357.html |
| doker-compose | v1.11,Docker 官方编排（Orchestration）项目之一，负责快速在集群中部署分布式应 | |
| docker swarm | v1.13.1,Docker Engine 1.12或更高版本中内置了swarm（不用额外安装） | http://www.cnblogs.com/520playboy/p/7873903.html |
| docker registry | registry:latest,用于存储docker镜像的私有仓库 | http://www.cnblogs.com/520playboy/p/7889647.html |
| spring boot | 1.5.1.RELEASE,是开箱即用，提供一系列大型项目常用的非功能性特征的快速度开发工具 | spring boot官网 |
| spring cloud | Camden SR5,Spring Cloud 为开发者提供了在分布式系统（如配置管理、服务发现、断路器、智能路由、微代理、控制总线、一次性 Token、全局锁、决策竞选、分布式会话和集群状态）操作的开发工具集 | spring cloud官网 |
| 开发工具 | jdk1.8/IntelliJ idea2016/maven3.3 |
2、创建父空项目 microservice-spring-cloud
3、父项目的pom.xml文件
<?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">
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.RELEASE</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.jacky</groupId>
<artifactId>microservice-spring-cloud</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>microservice-discovery-eureka-ha</module>
</modules>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<docker.image.prefix>jacky</docker.image.prefix><!--配置镜像仓库的属性-->
<docker.repostory>192.168.6.132:5000</docker.repostory><!--配置镜像仓库的对应的地址与端口-->
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR3</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>
<!--添加利用maven插件构建docker镜像的插件依赖-->
<pluginManagement>
<plugins>
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>0.4.13</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
4、创建子项目microservice-discovery-eureka-ha
5、microservice-discovery-eureka-ha工程的pom.xml文件
<?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">
<parent>
<artifactId>microservice-spring-cloud</artifactId>
<groupId>com.jacky</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>microservice-discovery-eureka-ha</artifactId>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<executions>
<!--设置在执行maven 的install时构建镜像-->
<execution>
<id>build-image</id>
<phase>install</phase>
<goals>
<goal>build</goal>
</goals>
</execution>
</executions>
<configuration>
<!--安装了docker的主机，并且打开了api remote接口设置-->
<dockerHost>http://192.168.6.130:5678</dockerHost>
<pushImage>true</pushImage><!--设置上传镜像到私有仓库，需要docker设置指定私有仓库地址-->
<!--镜像名称-->
<imageName>${docker.repostory}/${docker.image.prefix}/${project.artifactId}:${project.version}</imageName>
<!--镜像的基础版本-->
<baseImage>java:openjdk-8-jdk-alpine</baseImage>
<!--镜像启动参数-->
<entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
<resources>
<resource>
<targetPath>/</targetPath>
<directory>${project.build.directory}</directory>
<include>${project.build.finalName}.jar</include>
</resource>
</resources>
</configuration>
</plugin>
</plugins>
</build>
</project>
5、microservice-discovery-eureka-ha工程的application.yml文件
spring:
application:
name: EUREKA-HA
security:
basic:
enabled: true
user:
name: jacky
password: admin
---
server:
port: 8761
spring:
profiles: peer1
eureka:
instance:
hostname: peer1 #Eureka实例的主机名
prefer-ip-address: true
instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}
client:
serviceUrl:
defaultZone: http://jacky:[email protected]:8762/eureka/,http://jacky:[email protected]:8763/eureka/ #Eureka节点相互注册
register-with-eureka: true
---
server:
port: 8762
spring:
profiles: peer2
eureka:
instance:
hostname: peer2 #Eureka实例的主机名
prefer-ip-address: true
instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}
client:
serviceUrl:
defaultZone: http://jacky:[email protected]:8761/eureka/,http://jacky:[email protected]:8763/eureka/
register-with-eureka: true
---
server:
port: 8763
spring:
profiles: peer3
eureka:
instance:
hostname: peer3 #Eureka实例的主机名
prefer-ip-address: true
instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}
client:
serviceUrl:
defaultZone: http://jacky:[email protected]:8761/eureka/,http://jacky:[email protected]:8762/eureka/
register-with-eureka: true
6、创建EurekaHaApplication.java文件
package com.jacky.cloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@SpringBootApplication
@EnableEurekaServer
public class EurekaHaApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaHaApplication.class, args);
}
}
7、在父目录下创建docker-compose.yml文件
version: "3"
services:
peer1: # 默认情况下，其他服务可以使用服务名称连接到该服务。因此，对于eurekaService1的节点，它需要连接http://eurekaService2/3:951X/eureka/，因此需要配置该服务的名称是eurekaService1。
image: 192.168.6.132:5000/jacky/microservice-discovery-eureka-ha:1.0-SNAPSHOT
deploy:
replicas: 1 #定义 replicated 模式的服务的复本数量
update_config:
parallelism: 1 #每次更新复本数量
delay: 2s #每次更新间隔
restart_policy:
condition: on-failure #定义服务的重启条件
networks:
- eureka-net
ports:
- "8761:8761"
environment:
- spring.profiles.active=peer1
peer2: # 高可用eureka注册节点2
image: 192.168.6.132:5000/jacky/microservice-discovery-eureka-ha:1.0-SNAPSHOT
deploy:
replicas: 1 #定义 replicated 模式的服务的复本数量
update_config:
parallelism: 1 #每次更新复本数量
delay: 2s #每次更新间隔
restart_policy:
condition: on-failure #定义服务的重启条件
networks:
- eureka-net
ports:
- "8762:8762"
environment:
- spring.profiles.active=peer2
peer3: # 高可用eureka注册节点3
image: 192.168.6.132:5000/jacky/microservice-discovery-eureka-ha:1.0-SNAPSHOT
deploy:
replicas: 1 #定义 replicated 模式的服务的复本数量
update_config:
parallelism: 1 #每次更新复本数量
delay: 2s #每次更新间隔
restart_policy:
condition: on-failure #定义服务的重启条件
networks:
- eureka-net
ports:
- "8763:8763"
environment:
- spring.profiles.active=peer3
networks:
eureka-net: #网络名称
driver: overlay
8、打包
双击install
9、在192.168.6.130机器上查看镜像
表示上传成功
10、把的docker-compose.yml文件上传到拥有swarm环境下，执行命令如下
[[email protected] docker-compose]# docker stack deploy -c docker-compose.yml eureka Creating service eureka_peer2 Creating service eureka_peer3 Creating service eureka_peer1 [[email protected] docker-compose]# docker stack ps eureka ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS njhk2gkh7b6r eureka_peer1.1 192.168.6.132:5000/jacky/microservice-discovery-eureka-ha:1.0-SNAPSHOT node3.jacky.com Running Running 55 seconds ago y5xwabq42zx4 eureka_peer3.1 192.168.6.132:5000/jacky/microservice-discovery-eureka-ha:1.0-SNAPSHOT node3.jacky.com Running Running 55 seconds ago 468xoiu6lv6l eureka_peer2.1 192.168.6.132:5000/jacky/microservice-discovery-eureka-ha:1.0-SNAPSHOT node2.jacky.com Running Running 57 seconds ago
说明eureka集群部署成功
说明：swarm集群192.168.6.130；192.168.6.131；192.168.6.132；8761,8762,8763端口都可以访问
时间： 2024-08-30 09:29:22