Question

我有以下问题。我有两个spring boot微服务（1.5.8 ver），一个配置服务和一个发现服务。当我在本地运行它们时，服务正在启动并成功通信。

现在，当我使用docker compose文件启动这两项服务时，我收到以下错误：

 Request execution failed with message: java.net.ConnectException: Connection refused (Connection refused)
discovery-svc    | WARN 24 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_DISCOVERY/6c4a9f118423:discovery - registration failed Cannot execute request on any known server
discovery-svc    | 
discovery-svc    | com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
discovery-svc    |  at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:111) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:807) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:104) [eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_151]
discovery-svc    |  at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_151]
discovery-svc    |  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_151]
discovery-svc    |  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_151]
discovery-svc    |  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_151]
discovery-svc    |  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_151]
discovery-svc    |  at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]
discovery-svc    | 
discovery-svc    | 2017-12-20 15:19:00.314  WARN 24 --- [nfoReplicator-0] c.n.discovery.InstanceInfoReplicator     : There was a problem with the instance info replicator
discovery-svc    | 
discovery-svc    | com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
discovery-svc    |  at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:111) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:807) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:104) ~[eureka-client-1.7.0.jar!/:1.7.0]
discovery-svc    |  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_151]
discovery-svc    |  at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_151]
discovery-svc    |  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_151]
discovery-svc    |  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_151]
discovery-svc    |  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_151]
discovery-svc    |  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_151]
discovery-svc    |  at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]

我有以下文件：搬运工-compose.yml

 version: '3.4'
services:
    config-svc:
      image: "config-img"
      container_name: config-svc
      build:
        context: ../config
        dockerfile: docker/config.dockerfile
      expose:
        - "8888"    
    discovery-svc:
      image: "discovery-img"
      container_name: discovery-svc
      build:
        context: ../discovery
        dockerfile: docker/discovery.dockerfile
      depends_on:
        - config-svc
      links:
        - config-svc:config-svc 
      entrypoint: sh -c '/tmp/wait-for config-svc:8888 && java -jar discovery.jar'
      expose:
        - "8761"

发现服务：bootstrap.yml

spring:
  application:
    name: discovery
  cloud:
    config:
       uri: http://config-svc:8888
  profiles:
    active: docker
management:
  security:
    enabled: false

配置服务：bootstrap.yml

server:
  port: 8888
spring:
  application:
    name: config
  cloud:
    config:
      server:
        native:
          search-locations: ${user.dir}/src/main/resources/configs
  profiles:
    active:
    - native
security:
  basic:
    enabled: false
management:
  security:
    enabled: false

discovery.docker.properties

server.port=8761

eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
eureka.client.serviceUrl.defaultZone=http://discovery-svc:8761/eureka/
eureka.instance.hostname=discovery-svc
eureka.instance.preferIpAddress=false

logging.level.com.netflix.eureka=OFF
logging.level.com.netflix.discovery=OFF

我尝试过很多东西，但没有运气。任何人都可以提出任何建议吗？

提前致谢

Answer 1

你是不是已经尝试过设置网络的每项服务？因此，通过同一网络提供服务config-svc和服务discovery-svc通信。尝试将驱动程序设置为bridge，如下所示

version: '3.4' services: config-svc: image: "config-img" container_name: config-svc build: context: ../config dockerfile: docker/config.dockerfile expose: - "8888" networks: - app-network discovery-svc: image: "discovery-img" container_name: discovery-svc build: context: ../discovery dockerfile: docker/discovery.dockerfile depends_on: - config-svc links: - config-svc:config-svc entrypoint: sh -c '/tmp/wait-for config-svc:8888 && java -jar discovery.jar' expose: - "8761" networks: - app-network networks: app-network: driver: brige

参考：https://docs.docker.com/compose/compose-file/

Answer 2

好的，我找到了。问题出在bootstrap.yml文件的配置服务中，spring.cloud.config.server.native.search-locations的属性值必须固定为classpath：configs。现在它工作正常。

感谢您的回复

Docker撰写 - 无法在任何已知服务器上执行请求

2 个答案: