在微服务开发过程中，为了保障咱们服务的高可用，不可避免的须要配置多台服务器组成集群，而集群中每一台主机的配置文件都是雷同的，对配置文件的更新保护就成为了一个辣手的问题，针对于该问题，spring cloud官网给出了一个解决方案，应用Spring Cloud Config配置核心来治理所有的配置文件
原理
Spring Cloud Config 就是对微服务的配置文件进行对立治理的。其工作原理是，咱们首先须要将各个微服务公共的配置信息推送到 GitHub 近程版本库。而后咱们再定义一个 Spring Cloud Config Server，其会连贯上这个 GitHub 近程库。这样咱们就能够定义 Config 版的 Eureka
Server、提供者与消费者了，它们都将作为 Spring Cloud Config Client 呈现，它们都会通过连贯 Spring Cloud Config Server 连贯上 GitHub 上的近程库，以读取到指定配置文件中的内容。
疾速体验
2.1 Eureka服务端
<!-- eureka服务端依赖 --><dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId></dependency>application.yml
server: port: 10080spring: application: name: eureka-servereureka: client: service-url: defaultZone: http://127.0.0.1:10000/eureka register-with-eureka: false fetch-registry: false启动类
@SpringBootApplication@EnableEurekaServerpublic class EurekaServerApp { public static void main(String[] args) { SpringApplication.run(EurekaServerApp.class, args); }}2.2 spring cloud config
<!-- eureka client --><dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><!-- spring cloud config --><dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-server</artifactId></dependency>application.yml
server: port: 10010spring: application: name: config-server cloud: config: server: git: uri: ${git仓库地址} default-label: master timeout: 5 #若网络须要代理配置，则加上proxy配置 #proxy: # https: # host: # port: # username: # password: username: ${git用户名} password: ${git明码} eureka: client: service-url: defaultZone: http://127.0.0.1:10080/eureka instance: prefer-ip-address: true ip-address: 127.0.0.1启动类
@SpringBootApplication@EnableConfigServerpublic class ConfigServerApp { public static void main(String[] args) { SpringApplication.run(ConfigServerApp.class, args); }}spring cloud config 客户端
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId></dependency>application.yml
spring: cloud: config: name: bill-server #与git中的配置文件application名统一 profile: dev label: master discovery: enabled: true service-id: config-server #服务名eureka: client: service-url: defaultZone: http://127.0.0.1:10080/eureka register-with-eureka: true fetch-registry: true instance: ip-address: 127.0.0.1 prefer-ip-address: truemanagement: endpoints: web: exposure: include: bus-refresh启动类
@SpringBootApplication@EnableEurekaClientpublic class BillServerApp { public static void main(String[] args) { SpringApplication.run(BillServerApp.class, args); }}