Eureka + Config 实现配置中心的高可用

╰半夏微凉° 2023-01-03 01:22 221阅读 0赞

Eureka的搭建可参考[《SpringBoot：Eureka搭建注册中心》][SpringBoot_Eureka]，本篇不再做展开

下面搭建应用`config-server-eureka`

首先还是pom

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

配置文件

spring:
      application:
        name: config-server-eureka
      cloud:
        config:
          server:
            git:
              uri: https://github.com/xxx/project.git
              force-pull: true
    
    eureka:
      client:
        serviceUrl:
          defaultZone: http://localhost:20000/eureka/
    
    server:
      port: 60001

启动类

@SpringBootApplication
    @EnableConfigServer
    @EnableDiscoveryClient
    public class ConfigServerApplication { 
    
        public static void main(String[] args) { 
            new SpringApplicationBuilder(ConfigServerApplication.class)
                    .web(WebApplicationType.SERVLET)
                    .run(args);
        }
    
    }

分别启动`Eureka`与`config-server-eureka`，访问`localhost:20000`，能看到`config-server-eureka`已经注册成功！

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70]  
然后我们启动第二个config配置中心，这里直接对[《Config配置中心动态修改配置》][Config]中的`config-client`做改造

*  pom文件中加入eureka的依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
    
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
    </dependencies>

*  启动类上加上`@EnableDiscoveryClient`注解
 *  yml文件修改，将原本写死的uri修改为eureka的配置

spring:
      application:
        name: config-client
      cloud:
        config:
          name: config-consumer
          discovery:
            enabled: true
            service-id: config-server-eureka
          profile: prod
          label: master
    
    server:
      port: 61000
    
    eureka:
      client:
        serviceUrl:
          defaultZone: http://localhost:20000/eureka/
    
    management:
      security:
        enabled: false
      endpoints:
        web:
          exposure:
            include: "*"
      endpoint:
        health:
          show-details: always

启动项目，然后访问: `http://localhost:61000/refresh/words`，可以看到返回结果  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70 1]  
到这里，我们Eureka + Config的高可用配置重新就改造完成了！

[SpringBoot_Eureka]: https://jiandansuifeng.blog.csdn.net/article/details/109363552
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70]: /images/20221119/5ca64610a7394fb8a8bd3fa942fdb107.png
[Config]: https://jiandansuifeng.blog.csdn.net/article/details/112271300
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70 1]: /images/20221119/74d1fc861a924b849f2592c0c8e3f437.png