Eureka单机搭建_eureka本地搭建服务

Eureka详解

Eureka

Spring Cloud Eureka 是Netflix 开发的注册发现组件，本身是一个基于 REST 的服务。提供注册与发现，同时还提供了负载均衡、故障转移等能力

Eureka3个角色

服务中心，服务提供者，服务消费者

Eureka Server：服务器端。它提供服务的注册和发现功能，即实现服务的治理。

Service Provider：服务提供者。它将自身服务注册到Eureka Server中，以便“服务消费者”能够通过服务器端提供的服务清单（注册服务列表）来调用它。

Service Consumer：服务消费者。它从 Eureka 获取“已注册的服务列表”，从而消费服务

springcloud架构

搭建父项目

创建Maven项目

编写pom.xml文件，添加以下内容

<packaging>pom</packaging>
 
<!-- 统一管理jar包版本 -->
<properties>
    <maven.compiler.source>11</maven.compiler.source>
    <maven.compiler.target>11</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <spring-cloud.version>2021.0.0</spring-cloud.version>
    <spring-boot.version>2.6.3</spring-boot.version>
</properties>
 
 
<!-- 子模块继承之后，提供作用：锁定版本+子modlue不用写groupId和version  -->
<dependencyManagement>
    <dependencies>
        <!--spring boot 2.6.3-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>${spring-boot.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <!--spring cloud 2021.0.0-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

开启Run Dashboard面板

打开项目文件夹所在目录，找到.idea/workspace.xml ，添加以下配置

 <component name="RunDashboard">
 <option name="ruleStates">
  <list>
   <RuleState>
    <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
   </RuleState>
   <RuleState>
    <option name="name" value="StatusDashboardGroupingRule" />
 
   </RuleState>
  </list>
 </option>
 <option name="configurationTypes">
 <set>
  <option value="SpringBootApplicationConfigurationType" />
 </set>
</option>
</component>

搭建单机的Eureka

在父项目中创建maven项目模块,名字为：cloud-eureka（自定义）
编写pom.xml文件，加入以下依赖

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

编写application.yml

server:
  port: 7001
spring:
  application:
    name: eureka
eureka:
  client:
    # 表示是否从Eureka Server获取注册的服务信息
    fetch-registry: false
    # 表示是否将自己注册到Eureka Server
    register-with-eureka: false
 
logging:
  pattern:
    console: '%d{MM/dd HH:mm:ss.SSS} %clr(%-5level) ---  [%-15thread] %cyan(%-50logger{50}):%msg%n'

编写主启动类

@SpringBootApplication
@EnableEurekaServer//开启Eureka服务
public class Eureka7001 {
    public static void main(String[] args) {
        SpringApplication.run(Eureka7001.class,args);
    }
}

访问

http://localhost:7001/

子项目整合eureka

在父项目中创建maven子项目cloud-eureka-pro
修改pom.xml

<dependencies>
    <!-- Eureka client-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>
    <!-- SpringMVC-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!-- lombok-->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.22</version>
    </dependency>
</dependencies>

编写application.yml

server:
  port: 80
spring:
  application:
    name: cloud-eureka-pro
eureka:
  client:
    service-url:
      # Eureka server 地址
      defaultZone: http://localhost:7001/eureka/

编写主启动类

@SpringBootApplication
@EnableEurekaClient
public class EurekaPro80 {
    public static void main(String[] args) {
        SpringApplication.run(EurekaPro80.class,args);
    }
}

制作eureka的docker镜像并运行

Pom.xml引入插件依赖【记得修改dockerHost的ip】

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>2.5.6</version>
        </plugin>
        <plugin>
            <groupId>com.spotify</groupId>
            <artifactId>docker-maven-plugin</artifactId>
            <configuration>
                <imageName>livegoods/eurekaserver:1.0</imageName>
                <baseImage>openjdk:11</baseImage>
                <dockerHost>http://192.168.66.101:2375</dockerHost>
                <entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
                <exposes>
                    <expose>8761</expose>
                </exposes>
                <resources>
                    <resources>
                        <targetPath>/</targetPath>
                        <directory>${project.build.directory}</directory>
                        <include>${project.build.finalName}.jar</include>
                    </resources>
                </resources>
            </configuration>
        </plugin>
    </plugins>
</build>

打包成jar包

利用maven制作docker镜像【docker记得开启远程访问】

创建并启动容器

docker run -d -p 7001:7001 --name eureka 容器镜像名

访问

Ip:7001/