前言
本文記錄怎麼搭建服務註冊中心eureka，然後打包成docker映象，用docker swarm部署eureka叢集
1、環境
| 環境 | 版本及說明 | 參考地址 |
|---|---|---|
| docker | v1.13.1,Docker是一個能夠把開發的應用程式自動部署到容器的開源引擎 | http://www.cnblogs.com/520playboy/p/7910357.html |
| doker-compose | v1.11,Docker 官方編排（Orchestration）專案之一，負責快速在叢集中部署分散式應 | |
| docker swarm | v1.13.1,Docker Engine 1.12或更高版本中內建了swarm（不用額外安裝） | http://www.cnblogs.com/520playboy/p/7873903.html |
| docker registry | registry:latest,用於儲存docker映象的私有倉庫 | http://www.cnblogs.com/520playboy/p/7889647.html |
| spring boot | 1.5.1.RELEASE,是開箱即用，提供一系列大型專案常用的非功能性特徵的快速度開發工具 | spring boot官網 |
| spring cloud | Camden SR5,Spring Cloud 為開發者提供了在分散式系統（如配置管理、服務發現、斷路器、智慧路由、微代理、控制匯流排、一次性 Token、全域性鎖、決策競選、分散式會話和叢集狀態）操作的開發工具集 | spring cloud官網 |
| 開發工具 | jdk1.8/IntelliJ idea2016/maven3.3 |
2、建立父空專案 microservice-spring-cloud
3、父專案的pom.xml檔案
<?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><!--配置映象倉庫的屬性-->
<docker.repostory>192.168.6.132:5000</docker.repostory><!--配置映象倉庫的對應的地址與埠-->
</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>
<!--新增利用maven外掛構建docker映象的外掛依賴-->
<pluginManagement>
<plugins>
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>0.4.13</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
複製程式碼4、建立子專案microservice-discovery-eureka-ha
5、microservice-discovery-eureka-ha工程的pom.xml檔案
<?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>
<!--設定在執行maven 的install時構建映象-->
<execution>
<id>build-image</id>
<phase>install</phase>
<goals>
<goal>build</goal>
</goals>
</execution>
</executions>
<configuration>
<!--安裝了docker的主機，並且開啟了api remote介面設定-->
<dockerHost>http://192.168.6.130:5678</dockerHost>
<pushImage>true</pushImage><!--設定上傳映象到私有倉庫，需要docker設定指定私有倉庫地址-->
<!--映象名稱-->
<imageName>${docker.repostory}/${docker.image.prefix}/${project.artifactId}:${project.version}</imageName>
<!--映象的基礎版本-->
<baseImage>java:openjdk-8-jdk-alpine</baseImage>
<!--映象啟動引數-->
<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>
複製程式碼5、microservice-discovery-eureka-ha工程的application.yml檔案
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例項的主機名
prefer-ip-address: true
instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}
client:
serviceUrl:
defaultZone: http://jacky:admin@peer2:8762/eureka/,http://jacky:admin@peer3:8763/eureka/ #Eureka節點相互註冊
register-with-eureka: true
---
server:
port: 8762
spring:
profiles: peer2
eureka:
instance:
hostname: peer2 #Eureka例項的主機名
prefer-ip-address: true
instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}
client:
serviceUrl:
defaultZone: http://jacky:admin@peer1:8761/eureka/,http://jacky:admin@peer3:8763/eureka/
register-with-eureka: true
---
server:
port: 8763
spring:
profiles: peer3
eureka:
instance:
hostname: peer3 #Eureka例項的主機名
prefer-ip-address: true
instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}
client:
serviceUrl:
defaultZone: http://jacky:admin@peer1:8761/eureka/,http://jacky:admin@peer2:8762/eureka/
register-with-eureka: true
複製程式碼6、建立EurekaHaApplication.java檔案
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);
}
}
複製程式碼7、在父目錄下建立docker-compose.yml檔案
version: "3"
services:
peer1: # 預設情況下，其他服務可以使用服務名稱連線到該服務。因此，對於eurekaService1的節點，它需要連線http://eurekaService2/3:951X/eureka/，因此需要配置該服務的名稱是eurekaService1。
image: 192.168.6.132:5000/jacky/microservice-discovery-eureka-ha:1.0-SNAPSHOT
deploy:
replicas: 1 #定義 replicated 模式的服務的複本數量
update_config:
parallelism: 1 #每次更新複本數量
delay: 2s #每次更新間隔
restart_policy:
condition: on-failure #定義服務的重啟條件
networks:
- eureka-net
ports:
- "8761:8761"
environment:
- spring.profiles.active=peer1
peer2: # 高可用eureka註冊節點2
image: 192.168.6.132:5000/jacky/microservice-discovery-eureka-ha:1.0-SNAPSHOT
deploy:
replicas: 1 #定義 replicated 模式的服務的複本數量
update_config:
parallelism: 1 #每次更新複本數量
delay: 2s #每次更新間隔
restart_policy:
condition: on-failure #定義服務的重啟條件
networks:
- eureka-net
ports:
- "8762:8762"
environment:
- spring.profiles.active=peer2
peer3: # 高可用eureka註冊節點3
image: 192.168.6.132:5000/jacky/microservice-discovery-eureka-ha:1.0-SNAPSHOT
deploy:
replicas: 1 #定義 replicated 模式的服務的複本數量
update_config:
parallelism: 1 #每次更新複本數量
delay: 2s #每次更新間隔
restart_policy:
condition: on-failure #定義服務的重啟條件
networks:
- eureka-net
ports:
- "8763:8763"
environment:
- spring.profiles.active=peer3
networks:
eureka-net: #網路名稱
driver: overlay
複製程式碼8、打包
雙擊install
9、在192.168.6.130機器上檢視映象
表示microservice-discovery-eureka-ha映象上傳成功
10、把的docker-compose.yml檔案上傳到擁有swarm環境下，執行命令如下
[root@node1 docker-compose]# docker stack deploy -c docker-compose.yml eureka
Creating service eureka_peer2
Creating service eureka_peer3
Creating service eureka_peer1
[root@node1 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
複製程式碼說明eureka叢集部署成功
說明：swarm叢集192.168.6.130；192.168.6.131；192.168.6.132；8761,8762,8763埠都可以訪問
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