spring cloud conf 的认证，高可用和自动刷新

桃扇骨 2022-05-21 06:54 57阅读 0赞

*  [springColud目录][springColud]

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### 中心认证 ###

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*  中心认证和之前eureka的认证方式一致，通过 security 安全认证

1.server端添加依赖

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

2.配置文件增加security配置

security:
      basic:
        enabled: true
      user:
        name: user
        password: password123

3.client端增加配置

spring:
      cloud:
        config:
          uri: http://localhost:8888  # curl style
          username: user
          password: password123
    # 或者
    spring:
      cloud:
        config:
          uri: http://user:password123@localhost:8888  # curl style

### 服务端注册到Eureka实现高可用 ###

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*  搭建多个Conf的服务端注册到Eureka实现高可用

#### Server端 ####

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1.服务端添加依赖

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

2.入口程序添加注解@EnableEurekaClient，@EnableConfigServer

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

3.配置文件，配置conf，eureka信息

server:
      port: 8888
    spring:
      cloud:
        config:
          server:
            git:
              uri: https://github.com/xxx/xxxx
              search-paths:
                - bar   # bar路径
              username:
              password:
      application:
        name: microservice-config-server
    
    
    eureka:
      client:
        healthcheck:
          enabled: true
        serviceUrl:
          defaultZone: http://user:1234@localhost:8761/eureka
      instance:
        prefer-ip-address: true
        instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}

#### Client端 ####

--------------------

1.添加依赖

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

2.入口程序添加注解@EnableEurekaClient

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

3.配置文件

*  在conf 前章中说道要将conf的配置放置到bootstrap.yml中，程序会先加载bootstrap.yml去获取配置信息。可是更改为cloud.config.discovery的方式去发现服务端时，根据实测，所有的配置信息都要放置在application.yml中才有效，conf的配置放置到bootstrap.yml中则会报错。

server:
      port: 8081
    eureka:
      client:
        healthcheck:
          enabled: true
        serviceUrl:
          defaultZone: http://user:1234@localhost:8761/eureka
      instance:
        prefer-ip-address: true
        instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}
    
    
    spring:
      application:
        name: bar
      cloud:
          config:
            discovery:
              enabled: true
              service-id: microservice-config-server
          #  uri: http://localhost:8888
            profile: dev
            label: master # 当configserver的后端存储是Git时，默认就是master

### 结合Spring Cloud Bus组件的自动刷新 ###

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*  Spring Cloud Bus使用轻量级的消息中间件将分布式系统中的节点连接起来。这可以在集群中广播状态改变（比如配置更改）或其他管理指令。总线之于Spring Boot应用程序即是一个可扩展的分布式Actuator，也是各个应用之间通信的通道。  
    架构图：  
    ![这里写图片描述][70]

1.轻量级的消息中间件采用RabbitMQ，具体安装参考其官网  
2.在conf服务端即客户端都添加依赖

<dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-bus-amqp</artifactId>
    </dependency>

3.在Config Server和Config Client的bootstrap.yml中添加对RabbitMQ的配置

spring:
      rabbitmq:
        host: localhost
        port: 5672
        username: guest
        password: 1234@pass

4.访问服务端/bus/refresh链接（[http://localhost:8888/bus/refresh），服务端则会让RabbitMQ将更新的消息发送给各个客户端，即更新配置信息。][http_localhost_8888_bus_refresh_RabbitMQ]

[springColud]: https://blog.csdn.net/u014296316/article/details/85483685
[70]: /images/20220521/0b93149247f8412e952edfe04f2d36aa.png
[http_localhost_8888_bus_refresh_RabbitMQ]: http://localhost:8888/bus/refresh%EF%BC%89%EF%BC%8C%E6%9C%8D%E5%8A%A1%E7%AB%AF%E5%88%99%E4%BC%9A%E8%AE%A9RabbitMQ%E5%B0%86%E6%9B%B4%E6%96%B0%E7%9A%84%E6%B6%88%E6%81%AF%E5%8F%91%E9%80%81%E7%BB%99%E5%90%84%E4%B8%AA%E5%AE%A2%E6%88%B7%E7%AB%AF%EF%BC%8C%E5%8D%B3%E6%9B%B4%E6%96%B0%E9%85%8D%E7%BD%AE%E4%BF%A1%E6%81%AF%E3%80%82