构建Multi Zone Eureka Server实战

野性酷女 2021-07-24 20:05 409阅读 0赞

一 Eureka Server

1 application.yml

  1. eureka:
  2.   server:
  3.     use-read-only-response-cache: false
  4.     response-cache-auto-expiration-in-seconds: 10
  5. management:
  6.   endpoints:
  7.     web:
  8.       exposure:
  9.         include: '*'

2 application-zone1a.yml

  1. server:
  2.   port: 8761
  3. spring:
  4.   application:
  5.     name: eureka-server
  6. eureka:
  7.   instance:
  8.     hostname: localhost
  9.     preferIpAddress: true
  10.     metadataMap.zone: zone1
  11.   client:
  12.     register-with-eureka: true
  13.     fetch-registry: true
  14.     region: region-east
  15.     service-url:
  16.       zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
  17.       zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
  18.     availability-zones:
  19.       region-east: zone1,zone2
  20.   server:
  21.       waitTimeInMsWhenSyncEmpty: 0
  22.       enableSelfPreservation: false

3 application-zone1b.yml

  1. server:
  2.   port: 8762
  3. spring:
  4.   application:
  5.     name: eureka-server
  6. eureka:
  7.   instance:
  8.     hostname: localhost
  9.     preferIpAddress: true
  10.     metadataMap.zone: zone1
  11.   client:
  12.     register-with-eureka: true
  13.     fetch-registry: true
  14.     region: region-east
  15.     service-url:
  16.       zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
  17.       zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
  18.     availability-zones:
  19.       region-east: zone1,zone2
  20.   server:
  21.       waitTimeInMsWhenSyncEmpty: 0
  22.       enableSelfPreservation: false

4 application-zone2a.yml

  1. server:
  2.   port: 8763
  3. spring:
  4.   application:
  5.     name: eureka-server
  6. eureka:
  7.   instance:
  8.     hostname: localhost
  9.     preferIpAddress: true
  10.     metadataMap.zone: zone2
  11.   client:
  12.     register-with-eureka: true
  13.     fetch-registry: true
  14.     region: region-east
  15.     service-url:
  16.       zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
  17.       zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
  18.     availability-zones:
  19.       region-east: zone1,zone2
  20.   server:
  21.       waitTimeInMsWhenSyncEmpty: 0
  22.       enableSelfPreservation: false

5 application-zone2b.yml

  1. server:
  2.   port: 8764
  3. spring:
  4.   application:
  5.     name: eureka-server
  6. eureka:
  7.   instance:
  8.     hostname: localhost
  9.     preferIpAddress: true
  10.     metadataMap.zone: zone2
  11.   client:
  12.     register-with-eureka: true
  13.     fetch-registry: true
  14.     region: region-east
  15.     service-url:
  16.       zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
  17.       zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
  18.     availability-zones:
  19.       region-east: zone1,zone2
  20.   server:
  21.       waitTimeInMsWhenSyncEmpty: 0
  22.       enableSelfPreservation: false

二 Eureka Client

1 application.yml

  1. management:
  2.   endpoints:
  3.     web:
  4.       exposure:
  5.         include: '*'

2 application-zone1.yml

  1. server:
  2.   port: 8081
  3. spring:
  4.   application:
  5.     name: client
  6. eureka:
  7.   instance:
  8.     metadataMap.zone: zone1
  9.   client:
  10.     register-with-eureka: true
  11.     fetch-registry: true
  12.     region: region-east
  13.     service-url:
  14.       zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
  15.       zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
  16.     availability-zones:
  17.       region-east: zone1,zone2

3 application-zone2.yml

  1. server:
  2.   port: 8082
  3. spring:
  4.   application:
  5.     name: client
  6. eureka:
  7.   instance:
  8.     metadataMap.zone: zone2
  9.   client:
  10.     register-with-eureka: true
  11.     fetch-registry: true
  12.     region: region-east
  13.     service-url:
  14.       zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
  15.       zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
  16.     availability-zones:
  17.       region-east: zone1,zone2

三 Zuul-gateway

1 application.yml

  1. spring:
  2.   application:
  3.     name: zuul-gateway
  4. management:
  5.   endpoints:
  6.     web:
  7.       exposure:
  8.         include: '*'

2 application-zone1.yml

  1. server:
  2.   port: 10001
  3. eureka:
  4.   instance:
  5.     metadataMap.zone: zone1
  6.   client:
  7.     register-with-eureka: true
  8.     fetch-registry: true
  9.     region: region-east
  10.     service-url:
  11.       zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
  12.       zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
  13.     availability-zones:
  14.       region-east: zone1,zone2

3 application-zone2.yml

  1. server:
  2.   port: 10002
  3. eureka:
  4.   instance:
  5.     metadataMap.zone: zone2
  6.   client:
  7.     register-with-eureka: true
  8.     fetch-registry: true
  9.     region: region-east
  10.     service-url:
  11.       zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
  12.       zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
  13.     availability-zones:
  14.       region-east: zone1,zone2

四 组网

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五 启动

1 启动4个Eureka Server

  1. mvn spring-boot:run -Dspring.profiles.active=zone1a
  2. mvn spring-boot:run -Dspring.profiles.active=zone1b
  3. mvn spring-boot:run -Dspring.profiles.active=zone2a
  4. mvn spring-boot:run -Dspring.profiles.active=zone2b

2 启动2个Eureka Client

  1. mvn spring-boot:run -Dspring.profiles.active=zone1
  2. mvn spring-boot:run -Dspring.profiles.active=zone2

3 启动2个Zuul Gateway

  1. mvn spring-boot:run -Dspring.profiles.active=zone1
  2. mvn spring-boot:run -Dspring.profiles.active=zone2

六 测试

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从测试结果来看访问gateway的/client/actuator/env，访问的是Eureka Client实例的/actuator/env接口，处于zone1的gateway返回的activeProfiles为zone1。

从这个表象来看gateway路由时对client实例是ZoneAffinity的。

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