构建Multi Zone Eureka Server实战

野性酷女 2021-07-24 20:05 336阅读 0赞

**一 Eureka Server**

1 application.yml

eureka:
      server:
        use-read-only-response-cache: false
        response-cache-auto-expiration-in-seconds: 10
    management:
      endpoints:
        web:
          exposure:
            include: '*'

2 application-zone1a.yml

server:
      port: 8761
    spring:
      application:
        name: eureka-server
    eureka:
      instance:
        hostname: localhost
        preferIpAddress: true
        metadataMap.zone: zone1
      client:
        register-with-eureka: true
        fetch-registry: true
        region: region-east
        service-url:
          zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
          zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
        availability-zones:
          region-east: zone1,zone2
      server:
          waitTimeInMsWhenSyncEmpty: 0
          enableSelfPreservation: false

3 application-zone1b.yml

server:
      port: 8762
    spring:
      application:
        name: eureka-server
    eureka:
      instance:
        hostname: localhost
        preferIpAddress: true
        metadataMap.zone: zone1
      client:
        register-with-eureka: true
        fetch-registry: true
        region: region-east
        service-url:
          zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
          zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
        availability-zones:
          region-east: zone1,zone2
      server:
          waitTimeInMsWhenSyncEmpty: 0
          enableSelfPreservation: false

4 application-zone2a.yml

server:
      port: 8763
    spring:
      application:
        name: eureka-server
    eureka:
      instance:
        hostname: localhost
        preferIpAddress: true
        metadataMap.zone: zone2
      client:
        register-with-eureka: true
        fetch-registry: true
        region: region-east
        service-url:
          zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
          zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
        availability-zones:
          region-east: zone1,zone2
      server:
          waitTimeInMsWhenSyncEmpty: 0
          enableSelfPreservation: false

5 application-zone2b.yml

server:
      port: 8764
    spring:
      application:
        name: eureka-server
    eureka:
      instance:
        hostname: localhost
        preferIpAddress: true
        metadataMap.zone: zone2
      client:
        register-with-eureka: true
        fetch-registry: true
        region: region-east
        service-url:
          zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
          zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
        availability-zones:
          region-east: zone1,zone2
      server:
          waitTimeInMsWhenSyncEmpty: 0
          enableSelfPreservation: false

**二 Eureka Client**

1 application.yml

management:
      endpoints:
        web:
          exposure:
            include: '*'

2 application-zone1.yml

server:
      port: 8081
    spring:
      application:
        name: client
    eureka:
      instance:
        metadataMap.zone: zone1
      client:
        register-with-eureka: true
        fetch-registry: true
        region: region-east
        service-url:
          zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
          zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
        availability-zones:
          region-east: zone1,zone2

3 application-zone2.yml

server:
      port: 8082
    spring:
      application:
        name: client
    eureka:
      instance:
        metadataMap.zone: zone2
      client:
        register-with-eureka: true
        fetch-registry: true
        region: region-east
        service-url:
          zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
          zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
        availability-zones:
          region-east: zone1,zone2

**三 Zuul-gateway**

1 application.yml

spring:
      application:
        name: zuul-gateway
    management:
      endpoints:
        web:
          exposure:
            include: '*'

2 application-zone1.yml

server:
      port: 10001
    eureka:
      instance:
        metadataMap.zone: zone1
      client:
        register-with-eureka: true
        fetch-registry: true
        region: region-east
        service-url:
          zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
          zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
        availability-zones:
          region-east: zone1,zone2

3 application-zone2.yml

server:
      port: 10002
    eureka:
      instance:
        metadataMap.zone: zone2
      client:
        register-with-eureka: true
        fetch-registry: true
        region: region-east
        service-url:
          zone1: http://localhost:8761/eureka/,http://localhost:8762/eureka/
          zone2: http://localhost:8763/eureka/,http://localhost:8764/eureka/
        availability-zones:
          region-east: zone1,zone2

**四 组网**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

**五 启动**

1 启动4个Eureka Server

mvn spring-boot:run -Dspring.profiles.active=zone1a
    mvn spring-boot:run -Dspring.profiles.active=zone1b
    mvn spring-boot:run -Dspring.profiles.active=zone2a
    mvn spring-boot:run -Dspring.profiles.active=zone2b

2 启动2个Eureka Client

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

3 启动2个Zuul Gateway

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

**六 测试**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 2][]

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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