Config分布式配置中心

阳光穿透心脏的1/2处 2024-03-22 21:26 33阅读 0赞

## 简介 ##

![在这里插入图片描述][427b19d95a3f45a6aee0356a920228cc.png]  
![在这里插入图片描述][c39c360ada854b3a884b9f2d8a84fb4e.png]  
![在这里插入图片描述][5735af2a4e8d45088d0515d12483705a.png]  
![在这里插入图片描述][5a4033374fb74d64a008be8c5481091e.png]  
![在这里插入图片描述][b0a45e210bbb40bdbaf715e53f95cfa3.png]  
![在这里插入图片描述][409bfb675ed94473bdb6a20533e152f3.png]

## Config配置总控中心搭建 ##

用你自己的账号在GitHub上新建一个名为springcloud-config的新Repository。

由上一步获得刚新建的git地址 ： git@github.com:yyx0113/springcloud-config.git

本地硬盘目录上新建gitee仓库并clone。

*  工作目录为 D:\\workspace\\yyx\\springcloudConfig
 *  git clone git@github.com:yyx0113/springcloud-config.git

此时在工作目录会创建名为springcloud-config的文件夹。

在springcloud-config的文件夹中创建三个配置文件,随后git add .，git commit -m “files”, git push -u origin master等一系列上传操作上传到springcloud-config的新Repository。

*  config-dev.yml

config:
      info: "master branch,springcloud-config/config-dev.yml version=7"

*  config-prod.yml

config:
      info: "master branch,springcloud-config/config-prod.yml version=1"

*  config-test.yml

config:
      info: "master branch,springcloud-config/config-test.yml version=1"

**1. 新建Module模块cloud-config-center-3344，它即为Cloud的配置中心模块CloudConfig Center**  
**2. pom.xml**

<?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">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>com.atguigu.springcloud</groupId>
            <artifactId>cloud2020</artifactId>
            <version>1.0-SNAPSHOT</version>
        </parent>
    
        <artifactId>cloud-config-center-3344</artifactId>
    
        <dependencies>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-bus-amqp</artifactId>
            </dependency>
            <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>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <scope>runtime</scope>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
    </project>

**3. application.yml**

server:
      port: 3344
    
    spring:
      application:
        name:  cloud-config-center #注册进Eureka服务器的微服务名
      cloud:
        config:
          server:
            git:
              uri: git@github.com:yyx0113/springcloud-config.git #GitHub上面的git仓库地址
              # 搜索目录
              search-paths:
                - springcloud-config   # 仓库名称
          # 读取分支
          label: master
    
    #服务注册到eureka地址
    eureka:
      client:
        service-url:
          defaultZone: http://localhost:7001/eureka

**4. 主启动类**

package com.atguigu.springcloud;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.config.server.EnableConfigServer;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @SpringBootApplication
    // @EnableConfigServer 注册中心服务器端注解
    @EnableConfigServer
    public class ConfigCenterMain3344 {
        
        public static void main(String[] args) {
        
            SpringApplication.run(ConfigCenterMain3344.class, args);
        }
    }

**5. windows下修改hosts文件，增加映射**

127.0.0.1 config-3344.com

**6. 测试通过Config微服务是否可以从GitHub上获取配置内容**

*  启动ConfigCenterMain3344
 *  浏览器防问 - http://config-3344.com:3344/master/config-dev.yml
 *  页面返回结果：  
    ![在这里插入图片描述][a12c699696a646fea8ec764241e31896.png]

## 配置读取规则 ##

*  /\{label\}/\{application\}-\{profile\}.yml（推荐）  
    ![在这里插入图片描述][5fb6ac0638f44ff1bfa0dd6a54acf993.png]  
    ![在这里插入图片描述][53fb686a8b2946b59ce0e41e5bec79fd.png]
 *  /\{application\}-\{profile\}.yml  
    ![在这里插入图片描述][590aed107cc741fa8aaf756c0cb31cb7.png]
 *  /\{application\}/\{profile\}\[/\{label\}\]  
    ![在这里插入图片描述][a38ccf85227e41b2a71a7105dbe9253e.png]
 *  重要配置细节总结  
    ![在这里插入图片描述][4c5ff834909646569eac130d912c183c.png]

## Config客户端配置与测试 ##

**1. 新建cloud-config-client-3355**  
**2. pom.xml**

<?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">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>com.atguigu.springcloud</groupId>
            <artifactId>cloud2020</artifactId>
            <version>1.0-SNAPSHOT</version>
        </parent>
    
        <artifactId>cloud-config-client-3355</artifactId>
    
        <dependencies>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-bus-amqp</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-config</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <scope>runtime</scope>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
    </project>

### bootstrap.yml ###

![在这里插入图片描述][33b631db26aa4eb4baca1fb2bb910744.png]

**3. bootstrap.yml**  
![在这里插入图片描述][57ccd6898b94436c947c568e090b9bcf.png]

server:
      port: 3355
    
    spring:
      application:
        name: config-client
      cloud:
        #Config客户端配置
        config:
          label: master #分支名称
          name: config #配置文件名称
          profile: dev #读取后缀名称   上述3个综合：master分支上config-dev.yml的配置文件被读取http://config-3344.com:3344/master/config-dev.yml
          uri: http://localhost:3344 #配置中心地址k
    
    
    #服务注册到eureka地址
    eureka:
      client:
        service-url:
          defaultZone: http://localhost:7001/eureka

**4. 修改config-dev.yml配置并提交到GitHub中，比如加个变量age或者版本号version**  
**5. 主启动**

package com.atguigu.springcloud;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @SpringBootApplication
    @EnableEurekaClient
    public class ConfigClientMain3355 {
        
        public static void main(String[] args) {
        
            SpringApplication.run(ConfigClientMain3355.class, args);
        }
    }

**6. 业务类，创建类 controller.ConfigClientController**  
**7. 测试**

*  启动Config配置中心3344微服务并自测
    
     *  http://config-3344.com:3344/master/config-prod.yml
     *  http://config-3344.com:3344/master/config-dev.yml
 *  启动3355作为Client准备访问
    
     *  http://localhost:3355/configlnfo
    
    ![在这里插入图片描述][736b7307cb914114ac568bd419005f78.png]  
    ![在这里插入图片描述][747ef963b0174ac5a44266f8e99a32d2.png]

## Config动态刷新之手动版 ##

![在这里插入图片描述][3d7370baf1a1454eb4a78a7a06726985.png]  
**1. 修改端口3355模块, pom.xml 引入actuator监控**

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>

**2. 修改 bootstrap.yml，添加暴露监控端口配置：**

# 暴露监控端点
    management:
      endpoints:
        web:
          exposure:
            include: "*"

**3. 业务类Controller 添加 @RefreshScope 注解**

**4. 测试**

此时修改github配置文件内容 -> 访问3344 -> 访问3355

http://localhost:3355/configInfo

3355改变没有??? 没有，还需一步

How

需要运维人员发送Post请求刷新3355

curl -X POST "http://localhost:3355/actuator/refresh"

再次测试

http://localhost:3355/configInfo

3355改变没有??? 改了。

成功实现了客户端3355刷新到最新配置内容，避免了服务重启

想想还有什么问题?

*  假如有多个微服务客户端3355/3366/3377
 *  每个微服务都要执行—次post请求，手动刷新?
 *  可否广播，一次通知，处处生效?
 *  我们想大范围的自动刷新，求方法

[427b19d95a3f45a6aee0356a920228cc.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/7f6b35fecf324a7095b3c0df550508e2.png
[c39c360ada854b3a884b9f2d8a84fb4e.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/fb831e13213247eab4e03f67a6f2dbbf.png
[5735af2a4e8d45088d0515d12483705a.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/b2d7740ba5b345e9843b65066b02c8fa.png
[5a4033374fb74d64a008be8c5481091e.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/19d0991338d44e0bbc7927781e8e7d8f.png
[b0a45e210bbb40bdbaf715e53f95cfa3.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/08f4de4d1f554d2f858decc681fcda25.png
[409bfb675ed94473bdb6a20533e152f3.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/e2338f47aaec431482a30ffff0ee54f6.png
[a12c699696a646fea8ec764241e31896.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/d54a92c795294b06af1da87129fe3671.png
[5fb6ac0638f44ff1bfa0dd6a54acf993.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/4df5ca2d13fc463aa3b04431df85606d.png
[53fb686a8b2946b59ce0e41e5bec79fd.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/479955c41afd4d4dbd35a15a70df00d0.png
[590aed107cc741fa8aaf756c0cb31cb7.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/2a2073c1ca4241588d39669af222f726.png
[a38ccf85227e41b2a71a7105dbe9253e.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/fa8915f19ef145f8942e4d15a123066b.png
[4c5ff834909646569eac130d912c183c.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/58b0b588b0494dfb83713452258f302f.png
[33b631db26aa4eb4baca1fb2bb910744.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/a8d6995a2cae4f9488d221f2c69dcafe.png
[57ccd6898b94436c947c568e090b9bcf.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/84f3723fbec84425b66caf794e734175.png
[736b7307cb914114ac568bd419005f78.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/aec672011a2549f6a80fa08ffbc7b097.png
[747ef963b0174ac5a44266f8e99a32d2.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/a55c5caebaf94ef49eaa06b4d3fba171.png
[3d7370baf1a1454eb4a78a7a06726985.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/22ce0bb496d74e0ebf89f71f68a00358.png