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Spring Cloud Config Bus

Spring Cloud Config概述

Spring Cloud Config 是Sping Cloud下用於分佈式配置管理的組件,分成了兩個角色Config Server和Config Client;Config Server端分佈式配置中心;並對外提供接口方便Config Client訪問,接口使用HTTP的方式對外提供訪問;Config Client通過接口獲取配置文件,然後可以在應用中使用;Config Server存儲/管理的配置文件可以來自本地文件,遠程Git倉庫以及遠程Svn倉庫,默認Git。

Spring Cloud Config搭建

Config Server:

pom

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

yml

默認

server:
  port: 8888
spring:
  application:
    name: config-server
  cloud:
    config:
      server:
        git:
          uri: https://github.com/amor412/spring-cloud-config-repo  # 配置Git倉庫的地址
          username:                                                 # Git倉庫的賬號
          password:                                                 # Git倉庫的密碼
	  health: # 健康狀況指示器
      	repositories:
        	a-foo: 
          		label: config-label-v2.0
        		name: provide-foo
          		profiles: dev
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true  #訪問路徑可以顯示ip地址
logging:
  level:
    org.springframework.cloud: DEBUG
    org.springframework.boot: DEBUG
management:
  endpoints:
    web:
      exposure:
        include: "*"
  security:
    enabled: false

佔位符支持

server:
  port: 8888
spring:
  application:
    name: config-server
  cloud:
    config:
      server:
        git:
          uri: https://github.com/amor412/{application}
          username:                                                         # Git倉庫的賬號
          password:                                                         # Git倉庫的密碼
logging:
  level:
    org.springframework.cloud: DEBUG
    org.springframework.boot: DEBUG
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true  #訪問路徑可以顯示ip地址
management:
  endpoints:
    web:
      exposure:
        include: "*"
  security:
    enabled: false

模式匹配和多倉庫

server:
  port: 8888
spring:
  application:
    name: config-server
  cloud:
    config:
      server:
        git:
          uri: https://github.com/spring-cloud-samples/config-repo
          repos:
            simple: https://github.com/simple/config-repo
            special:
              pattern: special*/dev*,*special*/dev*
              uri: https://github.com/special/config-repo
            local:
              pattern: local*
              uri: file:/home/configsvc/config-repo        
logging:
  level:
    org.springframework.cloud: DEBUG
    org.springframework.boot: DEBUG
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true  #訪問路徑可以顯示ip地址
management:
  endpoints:
    web:
      exposure:
        include: "*"
  security:
    enabled: false

子目錄查詢(搜索目錄)
search-paths 支持佔位符;

server:
  port: 8888
spring:
  application:
    name: config-server
  cloud:
    config:
  server:
    git:
      uri: http://github.com/amor412/spring-cloud-config-repo
      search-paths: foo,bar*
logging:
  level:
    org.springframework.cloud: DEBUG
    org.springframework.boot: DEBUG
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true  #訪問路徑可以顯示ip地址
management:
  endpoints:
    web:
      exposure:
        include: "*"
  security:
    enabled: false

啓動時clone
clone-on-start: 設置Config Server啓動時是否克隆git倉庫;

server:
  port: 8888
spring:
  application:
    name: config-server
  cloud:
    config:
  server:
    git:
      uri: https://github.com/spring-cloud-samples/config-repo
      repos:
        team-a:
            pattern: team-a-*
            cloneOnStart: true
            uri: http://github.com/team-a/spring-cloud-config-repo
        team-b:
            pattern: team-b-*
            cloneOnStart: false
            uri: http://github.com/team-b/spring-cloud-config-repo
        team-c:
            pattern: team-c-*
            uri: http://github.com/team-c/spring-cloud-config-repo
logging:
  level:
    org.springframework.cloud: DEBUG
    org.springframework.boot: DEBUG
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true  #訪問路徑可以顯示ip地址
management:
  endpoints:
    web:
      exposure:
        include: "*"
  security:
    enabled: false

svn

	<dependency>
		   <groupId>org.tmatesoft.svnkit</groupId>
		   <artifactId>svnkit</artifactId>
		   <version>1.8.10</version>
	</dependency>

server:
  port: 8888
spring:
  application:
    name: config-server
  cloud:
    config:
      enabled: true
      server:
        svn:
          uri: http://ip:port/svn/Code/Config/app-config
          username: username
          password: password
          default-label: config-repo  #指定svn目錄下的某個文件夾作爲配置倉庫  默認爲trunk
  profiles:
    active: subversion #指定配置中心使用svn管理
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true  #訪問路徑可以顯示ip地址
management:
  endpoints:
    web:
      exposure:
        include: "*"
  security:
    enabled: false

Application類上

@EnableEurekaClient
@EnableConfigServer

ConfigClient:

可以使ConfigServer的端點獲取配置文件的內容,端點與配置文件的映射規則如下:

/{application}/{profile}[/{label}]
/{application}-{profile}.yml
/{label}/{application}-{profile}.yml
/{application}-{profile}.properties
/{label}/{application}-{profile}.properties

application對應微服務名稱;profile表示使用哪種環境的配置文件,這裏可以是dev,test,prod;label可選的標籤,git倉庫默認值master,svn倉庫默認值是trunk。
provide-foo-dev.properties profile=dev
provide-foo-test.properties profile=test
provide-foo-prod.properties profile=prod

  <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.cloud</groupId>
    <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  </dependency>

Application類上
```
@EnableEurekaClient
```
yml
application.yml

server:
  port: 8081

bootstrap.yml

spring:
  application:
    name: provide-foo    # 對應config server所獲取的配置文件的{application}
  cloud:
    config:
      discovery:
        enabled: true                                  # 表示使用服務發現的configserver配置，而不是自己配置的Config Server的uri，默認false
        service-id: config-server  # 指定Config Server在服務發現中的serviceId，默認是configserver
      profile: dev            # profile對應config server所獲取的配置文件中的{profile} 
      label: master           # 指定Git倉庫的分支，對應config server所獲取的配置文件的{label}
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true  #訪問路徑可以顯示ip地址
management:
  endpoints:
    web:
      exposure:
        include: "*"
  security:
    enabled: false

Controller

@RestController
public class ConfigClientController {
  @Value("${profile}")
  private String profile;

  @GetMapping("/profile")
  public String hello() {
    return this.profile;
  }
}

ConfigClient配置/refresh手動刷新

ConfigServer

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

application.yml

server:
  port: 8888
spring:
  application:
    name: config-server
  cloud:
    bus:
      trace:
        enabled: true
    config:
      label: master
      server:
        git:
          uri: https://github.com/SophiaLeo/spring-cloud-config-repo
          username: 
          password: 
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true
logging:
  level:
    org.springframework.cloud: DEBUG
    org.springframework.boot: DEBUG
management:
  endpoints:
    web:
      exposure:
        include: "*"
  security:
    enabled: false

ConfigClient

pom

 <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>

Application類上
```
@EnableEurekaClient
```
yml
application.yml

server:
  port: 8081

bootstrap.yml:

spring:
  application:
    name: provide-foo    # 對應config server所獲取的配置文件的{application}
  cloud:
    config:
      discovery:
        enabled: true                                  # 表示使用服務發現的configserver配置，而不是自己配置的Config Server的uri，默認false
        service-id: config-server  # 指定Config Server在服務發現中的serviceId，默認是configserver
      profile: dev            # profile對應config server所獲取的配置文件中的{profile} 
      label: master           # 指定git倉庫的分支，對應config server所獲取的配置文件的{label}
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true  #訪問路徑可以顯示ip地址
management:
  endpoints:
    web:
      exposure:
        include: "*"  #因爲springboot2.1.必須加上,支持訪問/actuator/hystrix.stream
  security:
    enabled: false

Controller

@RestController
@RefreshScope
public class ConfigClientController {
  @Value("${profile}")
  private String profile;

  @GetMapping("/profile")
  public String hello() {
    return this.profile;
  }
}

修改 provide-foo-dev.properties 內容爲profile=dev-change
訪問http://localhost:8081/profile
post請求訪問http://localhost:8888/actuator/bus-refresh 接口
再次訪問http://localhost:8081/profile

ConfigClient使用SpringCloud Bus配置自動刷新:

ConfigServer

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

application.yml

server:
  port: 8888
spring:
  application:
    name: config-server
  cloud:
    bus:
      trace:
        enabled: true
    config:
      label: master
      server:
        git:
          uri: https://github.com/SophiaLeo/spring-cloud-config-repo
          username: 
          password: 
  rabbitmq:
    host: 192.168.0.111
    port: 5672
    username: admin
    password: admin
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true
logging:
  level:
    org.springframework.cloud: DEBUG
    org.springframework.boot: DEBUG
management:
  endpoints:
    web:
      exposure:
        include: "*"
  security:
    enabled: false

ConfigClient
pom

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

Application類上
```
@EnableEurekaClient
```

application.yml

server:
  port: 8081

bootstrap.yml:

spring:
  application:
    name: provide-foo    # 對應config server所獲取的配置文件的{application}
  cloud:
    config:
      discovery:
        enabled: true                                  # 表示使用服務發現的configserver配置，而不是自己配置的Config Server的uri，默認false
        service-id: config-server  # 指定Config Server在服務發現中的serviceId，默認是configserver
      profile: dev            # profile對應config server所獲取的配置文件中的{profile} 
      label: master           # 指定Git倉庫的分支，對應config server所獲取的配置文件的{label}
  rabbitmq:
    host: 192.168.0.111
    port: 5672
    username: admin
    password: admin
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true  #訪問路徑可以顯示ip地址
management:
  endpoints:
    web:
      exposure:
        include: "*"  #因爲springboot2.1.必須加上,支持訪問/actuator/hystrix.stream
  security:
    enabled: false

Application類上
```
@EnableEurekaClient
```
Controller

@RestController
@RefreshScope
public class ConfigClientController {
  @Value("${profile}")
  private String profile;

  @GetMapping("/profile")
  public String hello() {
    return this.profile;
  }
}

如果是Zuul作爲Config Client 則Application類添加:

   @RefreshScope
    @ConfigurationProperties("zuul")
    public ZuulProperties zuulProperties() {
       returnnew ZuulProperties();
    }

修改 provide-foo-dev.properties 內容爲profile=dev-change-bus
訪問http://localhost:8081/profile
post請求訪問http://localhost:8888/actuator/bus-refresh 接口
再次訪問http://localhost:8081/profile
可以藉助Git倉庫的WebHooks

SpringCloud Config 用戶認證與Eureka一起

ConfigServer:

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

server:
  port: 8888
spring:
  security:
    user:
      name: user                  # 配置登錄的賬號是user
      password: password123       # 配置登錄的密碼是password123
  application:
    name: config-server
  cloud:
    config:
      server:
        git:
          uri: https://github.com/amor412/spring-cloud-config-repo    # 配置Git倉庫的地址
          username:                                                         # Git倉庫的賬號
          password:                                                         # Git倉庫的密碼
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
	prefer‐ip‐address: true  #訪問路徑可以顯示ip地址

Application類上

@EnableConfigServer
@EnableEurekaClient

ConfigClient:

pom

<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.cloud</groupId>
    <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  </dependency>
</dependencies>

yml

application.yml
```
server:
  port: 8080
```

bootstrap.yml

spring:
  application:
    name: provide-foo    # 對應config server所獲取的配置文件的{application}
  cloud:
    config:
      username: user
      password: password123
      profile: dev
      label: master
      discovery:
        enabled: true                                  # 表示使用服務發現的configserver配置，而不是自己配置的Config Server的uri，默認false
        service-id: config-server  # 指定Config Server在服務發現中的serviceId，默認是configserver
eureka:
  client:
    service‐url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer‐ip‐address: true  #訪問路徑可以顯示ip地址

Application類上

@EnableEurekaClient

Controller

@RestController
public class ConfigClientController {
  @Value("${profile}")
  private String profile;

  @GetMapping("/profile")
  public String hello() {
    return this.profile;
  }
}

微服務Spring Cloud (五)配置中心 Config Bus

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Spring Cloud Config概述

Spring Cloud Config搭建

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ConfigClient:

ConfigClient配置/refresh手動刷新

ConfigClient使用SpringCloud Bus配置自動刷新:

SpringCloud Config 用戶認證與Eureka一起

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