微服務之springCloud和docker-Eureka（一）
阿新 • • 發佈：2018-08-31
決策 config snap service 每次 entry eas pen end 前言
本文記錄怎麽搭建服務註冊中心eureka，然後打包成docker鏡像，用docker swarm部署eureka集群
1、環境
spring boot 1.5.1.RELEASE,是開箱即用，提供一系列大型項目常用的非功能性特征的快速度開發工具 spring boot官網
spring cloud Camden SR5,Spring Cloud 為開發者提供了在分布式系統（如配置管理、服務發現、斷路器、智能路由、微代理、控制總線、一次性 Token、全局鎖、決策競選、分布式會話和集群狀態）操作的開發工具集 spring cloud官網
開發工具 jdk1.8/IntelliJ idea2016/maven3.3
3、父項目的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><!--配置鏡像倉庫的屬性--> <docker.repostory>192.168.6.132:5000</docker.repostory><!--配置鏡像倉庫的對應的地址與端口--> </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插件構建docker鏡像的插件依賴--> <pluginManagement> <plugins> <plugin> <groupId>com.spotify</groupId> <artifactId>docker-maven-plugin</artifactId> <version>0.4.13</version> </plugin> </plugins> </pluginManagement> </build> </project>
4、創建子項目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> <!--設置在執行maven 的install時構建鏡像--> <execution> <id>build-image</id> <phase>install</phase> <goals> <goal>build</goal> </goals> </execution> </executions> <configuration> <!--安裝了docker的主機，並且打開了api remote接口設置--> <dockerHost>http://192.168.6.130:5678</dockerHost> <pushImage>true</pushImage><!--設置上傳鏡像到私有倉庫，需要docker設置指定私有倉庫地址--> <!--鏡像名稱--> <imageName>${docker.repostory}/${docker.image.prefix}/${project.artifactId}:${project.version}</imageName> <!--鏡像的基礎版本--> <baseImage>java:openjdk-8-jdk-alpine</baseImage> <!--鏡像啟動參數--> <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>
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實例的主機名
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實例的主機名
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實例的主機名
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: true6、創建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、在父目錄下創建docker-compose.yml文件
version: "3"
services:
peer1: # 默認情況下，其他服務可以使用服務名稱連接到該服務。因此，對於eurekaService1的節點，它需要連接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 模式的服務的復本數量
update_config:
parallelism: 1 #每次更新復本數量
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 模式的服務的復本數量
update_config:
parallelism: 1 #每次更新復本數量
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 模式的服務的復本數量
update_config:
parallelism: 1 #每次更新復本數量
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: #網絡名稱
driver: overlay8、打包
雙擊install
9、在192.168.6.130機器上查看鏡像
表示上傳成功
10、把的docker-compose.yml文件上傳到擁有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說明eureka集群部署成功
微服務之springCloud和docker-Eureka（一）