docker - 使用 docker-compose 时应用程序未注册到 eureka

我拿了这个例子 https://github.com/paulc4/microservices-demo 并从中创建了 3 个 docker 镜像，其中包含以下 Dockerfile:

springdocker-注册:

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ADD target/microservice-demo-1.1.0.RELEASE.jar app.jar
EXPOSE 1111
ENTRYPOINT exec java -jar /app.jar registration

springdocker-帐户:

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ADD target/microservice-demo-1.1.0.RELEASE.jar app.jar
EXPOSE 2222
ENTRYPOINT exec java -jar /app.jar accounts

springdocker-web:

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ADD target/microservice-demo-1.1.0.RELEASE.jar app.jar
EXPOSE 3333
ENTRYPOINT exec java -jar /app.jar web

如果我分别运行三个图像，一切正常，web 和 accounts 服务会注册到 registration 服务(这是 eureka 注册表的实现)，我可以使用我的应用程序。但是，当将 docker-compose 与以下 docker-compose.yml 文件一起使用时

version: "3.4"
services:
 registration:
  image: springdocker-registration
  ports:
   - "1111:1111"

 accounts:
  image: springdocker-accounts
  ports:
   - "2222:2222"
  links:
   - registration
  depends_on:
   - registration

 web:
  image: springdocker-web
  ports:
   - "3333:3333"
  depends_on:
   - registration
   - accounts
  links:
   - registration

web 和 accounts 服务无法注册到 registration 服务。以下是应用程序的配置文件:

注册-server.yml:

eureka:
  instance:
    hostname: localhost
  client:
    registerWithEureka: false
    fetchRegistry: false
    serviceUrl:
     defaultZone: http://localhost:1111/eureka/

server:
  port: 1111

spring:
  thymeleaf:
    enabled: false

帐户-server.yml:

spring:
  application:
     name: accounts-service
  freemarker:
    enabled: false
  thymeleaf:
    cache: false
    prefix: classpath:/accounts-server/templates/

error:
  path: /error

server:
  port: 2222

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:1111/eureka
  instance:
    leaseRenewalIntervalInSeconds: 5
    preferIpAddress: true

网络服务器.yml

spring:
  application:
    name: web-service
  freemarker:
    enabled: false
  thymeleaf:
    cache: false
    prefix: classpath:/web-server/templates/

error:
  path: /error

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:1111/eureka
  instance:
    leaseRenewalIntervalInSeconds: 5
    preferIpAddress: true

server:
  port: 3333

我可以发布 docker-compose up 的完整控制台日志，但我认为这是有趣的一点:

1: ERROR RedirectingEurekaHttpClient - Request execution error
com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused (Connection refused)

1: ERROR DiscoveryClient - DiscoveryClient_WEB-SERVICE/e3b5e6b3396c:web-service:3333 - was unable to refresh its cache! status = Cannot execute request on any known server
com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server

最佳答案

由于它在 docker 中运行，所以不要使用 localhost 。 Docker compose 允许您引用容器名称。

eureka:
  client:
    serviceUrl:
      defaultZone: http://registration:1111/eureka

旁注:defaultZone 必须准确，我花了 2 天时间想知道为什么它不起作用，因为 intellij auto 完成了无法运行的 default-zone。

关于docker - 使用 docker-compose 时应用程序未注册到 eureka，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/47266795/