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SpringCloud Config 分布式服务配置
SpringCloud Config Server
官方参考文档 ： https://cloud.spring.io/spring-cloud-config/reference/html/
demo： JavaAdvancedTrain/springcloud-config/**
按照下面的步骤一次接入相关组件
SpringCloud-Config配置Maven引用
服务端pom.xml
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-server</artifactId> <exclusions> <exclusion> <groupId>org.bouncycastle</groupId> <artifactId>bcprov-jdk15on</artifactId> </exclusion> <exclusion> <groupId>org.bouncycastle</groupId> <artifactId>bcpkix-jdk15on</artifactId> </exclusion> </exclusions> </dependency>- 1
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如果是SpringBoot环境加入**@EnableConfigServer**注解
客户端pom.xml
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> <exclusions> <exclusion> <groupId>org.bouncycastle<]/groupId> <artifactId>bcprov-jdk15on</artifactId> </exclusion> <exclusion> <groupId>org.bouncycastle</groupId> <artifactId>bcpkix-jdk15on</artifactId> </exclusion> </exclusions> </dependency>- 1
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SpringCloud-Config配置方式
SpringCloud-config配置方式有三种：
- git
- svn
- native
可以使用compose三种同时使用，根据优先级进行覆盖，或者单独配置
native
服务端
application.yaml文件
server: port: 8888 spring: application: name: config-server # 如果添加了devtools,需要按照这个处理 Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable # 不使用默认属性 devtools: add-properties: false profiles: #active: native active: composite cloud: config: ## You can change the priority of all overrides in the client to be more like default values, letting applications supply their own values in environment variables or System propertie overrideNone: true server: composite: - type: native # target目录下的文件 search-locations: classpath:/conf/ # 本地磁盘配置 #search-locations: D:/temp/springcloud-config-native/conf/ bootstrap: true- 1
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conf/config-info-dev.yaml 文件
testnihao: testNo55555- 1
客户端
bootstrap.yaml
server: port: 8082 spring: application: name: config-client profiles: active: dev cloud: config: enabled: true #如果连接不上获取配置有问题，快速响应失败 fail-fast: true request-read-timeout: 10000 request-connect-timeout: 10000 uri: http://localhost:8888/ name: config-info profile: dev # 本地多了一层文件夹 : 根目录/demo/config-info-dev.yaml label: demo # 重试 retry: #下一间隔时间的乘数，默认是 1.1 multiplier: 1.1 #默认重试的间隔时间，默认 1000ms initial-interval: 1000 #最大重试次数，默认 6 次 max-attempts: 6 #最大间隔时间，最大 2000ms max-interval: 2000- 1
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URL与配置文件的映射关系 /{application}/{profile}[/{label}] /{application}-{profile}.yml /{label}/{application}-{profile}.yml /{application}-{profile}.properties /{label}/{application}-{profile}.properties- 1
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git方式
服务端
application.yaml文件
server: port: 8888 spring: application: name: config-server # 如果添加了devtools,需要按照这个处理 Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable # 不使用默认属性 devtools: add-properties: false cloud: config: ## You can change the priority of all overrides in the client to be more like default values, letting applications supply their own values in environment variables or System propertie overrideNone: true server: bootstrap: true git: basedir: C:\temp\springcloud-config uri: https://gitee.com/nydia/spring-cloud-config-repo.git search-paths: conf username: ******* password: **********- 1
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conf/config-info-dev.yaml 文件
testnihao: testNo55555- 1
客户端
bootstrap.yaml
server: port: 8082 spring: application: name: config-client profiles: active: dev cloud: config: enabled: true #如果连接不上获取配置有问题，快速响应失败 fail-fast: true request-read-timeout: 10000 request-connect-timeout: 10000 uri: http://localhost:8888/ name: config-info profile: dev # git仓库的branch label: master # 重试 retry: #下一间隔时间的乘数，默认是 1.1 multiplier: 1.1 #默认重试的间隔时间，默认 1000ms initial-interval: 1000 #最大重试次数，默认 6 次 max-attempts: 6 #最大间隔时间，最大 2000ms max-interval: 2000- 1
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URL与配置文件的映射关系 /{application}/{profile}[/{label}] /{application}-{profile}.yml /{label}/{application}-{profile}.yml /{application}-{profile}.properties /{label}/{application}-{profile}.properties- 1
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svn方式
svn方式同git方式，目前使用较少，暂不做介绍
compose结合native，git，svn
服务端
application.yaml文件
server: port: 8888 spring: application: name: config-server # 如果添加了devtools,需要按照这个处理 Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable # 不使用默认属性 devtools: add-properties: false profiles: #active: native active: composite cloud: config: ## You can change the priority of all overrides in the client to be more like default values, letting applications supply their own values in environment variables or System propertie overrideNone: true server: composite: # 根据优先级，自上而下覆盖 - type: native # target目录下的文件 search-locations: classpath:/conf/ # 本地磁盘配置 #search-locations: D:/temp/springcloud-config-native/conf/ - type: git uri: file:///path/to/rex/git/repo - type: svn uri: file:///path/to/svn/repo bootstrap: true- 1
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conf/config-info-dev.yaml 文件
testnihao: testNo55555- 1
客户端
bootstrap.yaml
server: port: 8082 spring: application: name: config-client profiles: active: dev cloud: config: enabled: true #如果连接不上获取配置有问题，快速响应失败 fail-fast: true request-read-timeout: 10000 request-connect-timeout: 10000 uri: http://localhost:8888/ name: config-info profile: dev # 本地多了一层文件夹 : 根目录/demo/config-info-dev.yaml label: demo # 重试 retry: #下一间隔时间的乘数，默认是 1.1 multiplier: 1.1 #默认重试的间隔时间，默认 1000ms initial-interval: 1000 #最大重试次数，默认 6 次 max-attempts: 6 #最大间隔时间，最大 2000ms max-interval: 2000- 1
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URL与配置文件的映射关系 /{application}/{profile}[/{label}] /{application}-{profile}.yml /{label}/{application}-{profile}.yml /{application}-{profile}.properties /{label}/{application}-{profile}.properties- 1
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刷新配置
环境的配置默认是不会自动刷新到程序中的，可使用的刷新方式：
1） 、服务器重启
2）、actuator方式手动刷新
3）、集成消息总线（spring-cloud-bus）自动刷新 / WebHooks
手动刷新和自动刷新都不需要重启服务器，在公司使用中不建议自动刷新，因为对性能不是很好，还是 建议使用手动刷新。（但是自动刷新怕配置是有必要性的）自动刷新配置的途径：
1、WebHooks动态刷新（git仓库里面调用刷新接口）
2、spring-cloud-bus消息总线动态刷新
spring-cloud-bus动态刷新
springcloud-bus消息总线 + springcloud actuator组件 + rabbitmq 实现动态刷新，可以调用config配置中心的刷新接口（…/actuator/refresh）刷新配置中心后发送mq消息，所有的client端接受到刷新消息会同步更新所有的配置，好处是不用调用每个client的刷新接口刷新配置。
坏处是原来如果没有用rabbitmq那单独为了刷新消息去搞个消息中心，得不偿失。
服务端
pom.xml添加
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-bus-amqp</artifactId> </dependency>- 1
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application.yaml添加
spring cloud: bus: trace: enabled: true #rabbitmq for auto reflesh config rabbitmq: host: 127.0.0.1 port: 5672 username: guest password: guest virtual-host: / #是否开启基本的鉴权，默认为true security: basic: enabled: false management: endpoints: web: exposure: include: "*" endpoint: health: show-details: ALWAYS- 1
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客户端
pom.xml文件
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-bus-amqp</artifactId> </dependency>- 1
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application-dev.yaml文件
spring: #rabbitmq for auto reflesh config rabbitmq: host: 192.168.23.147 port: 5672 username: guest password: guest virtual-host: / #打开info,health等断点，所以需要添加management.endpoints.web.exposure.include=*配置，其他的不变 management: endpoints: web: exposure: include: '*' endpoint: health: show-details: always- 1
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使用配置类的java文件
@RefreshScope- 1
WebHooks动态刷新
暂不做介绍，后续补充
接入Eureka注册中心
Eureka注册中心
pom.xml
<properties> <java.version>1.8</java.version> <spring-cloud.version>2020.0.1</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <dependencyManagement> <dependencies> <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>- 1
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application.yaml
server: port: 8761 spring: application: name: cloud-server eureka: server: shouldUseReadOnlyResponseCache: true #eureka是CAP理论种基于AP策略，为了保证强一致性关闭此切换CP 默认不关闭 false关闭 enable-self-preservation: false #关闭服务器自我保护，客户端心跳检测15分钟内错误达到80%服务会保护，导致别人还认为是好用的服务 eviction-interval-timer-in-ms: 60000 #清理间隔（单位毫秒，默认是60\*1000）5秒将客户端剔除的服务在服务注册列表中剔除# response-cache-update-interval-ms: 3000 #eureka server刷新readCacheMap的时间，注意，client读取的是readCacheMap，这个时间决定了多久会把readWriteCacheMap的缓存更新到readCacheMap上 #eureka server刷新readCacheMap的时间，注意，client读取的是readCacheMap，这个时间决定了多久会把readWriteCacheMap的缓存更新到readCacheMap上默认30s response-cache-auto-expiration-in-seconds: 180 #eureka server缓存readWriteCacheMap失效时间，这个只有在这个时间过去后缓存才会失效，失效前不会更新，过期后从registry重新读取注册服务信息，registry是一个ConcurrentHashMap。 client: register-with-eureka: true #false:不作为一个客户端注册到注册中心 fetch-registry: false #为true时，可以启动，但报异常：Cannot execute request on any known server instance-info-replication-interval-seconds: 10 service-url: defaultZone: http://127.0.0.1:8761/eureka instance: prefer-ip-address: true ip-address: 127.0.0.1 instance-id: ${spring.application.name}:${eureka.instance.ip-address}:${server.port} lease-renewal-interval-in-seconds: 30 # 续约更新时间间隔（默认30秒） lease-expiration-duration-in-seconds: 90 # 续约到期时间（默认90秒） ribbon: ServerListRefreshInterval: 1000- 1
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Application.java
package com.server.eureka; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer; @EnableEurekaServer @SpringBootApplication public class EurekaServerApplication { public static void main(String[] args) { SpringApplication.run(EurekaServerApplication.class, args); } }- 1
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Config服务端
application.yaml
eureka: client: serviceUrl: defaultZone: http://127.0.0.1:8761/eureka/ register-with-eureka: true fetch-registry: false instance: prefer-ip-address: true ip-address: 127.0.0.1 instance-id: ${spring.application.name}:${eureka.instance.ip-address}:${server.port}- 1
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Config客户端
bootstrap.yaml
spring: cloud: config: discovery: enabled: true # config server's application name service-id: config-server- 1
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application-dev.yaml
eureka: client: serviceUrl: defaultZone: http://127.0.0.1:8761/eureka/ instance: prefer-ip-address: true ip-address: 127.0.0.1 instance-id: ${spring.application.name}:${eureka.instance.ip-address}:${server.port}- 1
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参考
- 本地配置官方参考 https://cloud.spring.io/spring-cloud-config/reference/html/#_file_system_backend
- 本地配置自动刷新参考 https://blog.csdn.net/goodcto/article/details/102615901
- spring cloud actuator 、spring cloud bus 、webhook https://www.cnblogs.com/spec-dog/p/12371899.html
配置刷新的接口变更
- 服务端的请求刷新的页面由原来1.5.x的localhost:8888/bus/refresh变成：http://localhost:8888/actuator/bus-refresh。
- 老的版本中用 /actuator/bus-flesh , 后来变成了 /actuator/busflesh
问题
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If you are using the git profile, you need to set a Git URI in your configuration. If you have set spring.cloud.config.server.bootstrap=true, you need to use a composite configuration.
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spring-boot的application.yml文件，其中spring.cloud.config.name默认值就是spring.application.name
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springboot2.0.1和springcloud Finchley.SR1 启动遇到的循环依赖问题
问题现象
The dependencies of some of the beans in the application context form a cycle: servletEndpointRegistrar defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration.class] ↓ healthEndpoint defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class] ↓ org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorAutoConfiguration ┌─────┐ | dataSource ↑ ↓ | scopedTarget.dataSource defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class] ↑ ↓ | org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerInvoker └─────┘- 1
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问题原因：
DataSourceHealthIndicatorAutoConfiguration -> DataSourceAutoConfiguration -> DataSourceInitializationConfiguration -> DataSourceInitializationConfiguration -> Registrar # registerBeanDefinitions -> DataSourceInitializerPostProcessor # postProcessAfterInitialization -> DataSourceInitializerInvoker # DataSourceInitializerInvoker(dataSource)- 1
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调试的时候可以参考下面的流程：
参考; curl -X POST http://localhost:8888/actuator/busrefresh
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- 原文地址：https://blog.csdn.net/nydia_lvhq/article/details/125423312