在docker compose中更改docker端口对容器化java应用程序没有影响

Question

假设这是真的：

 service port:container port
         8081:8080

>

在docker compose中更改端口后，我使用docker stack deploy-c docker compose重新部署它。yml somename

当我执行另一个docker ps时，我看到容器仍然在端口8080上运行。

容器化java应用程序启动日志：

2019-02-24 17:06:00.665  INFO 1 --- [           main] c.l.a.ArticleServiceApplication          : Starting ArticleServiceApplication v0.0.1-SNAPSHOT on 42ccc7a1554c with PID 1 (/articleservice-0.0.1-SNAPSHOT.jar started by root in /)
2019-02-24 17:06:00.748  INFO 1 --- [           main] c.l.a.ArticleServiceApplication          : No active profile set, falling back to default profiles: default
2019-02-24 17:06:30.505  INFO 1 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
2019-02-24 17:06:32.601  INFO 1 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 1643ms. Found 1 repository interfaces.
2019-02-24 17:06:48.016  INFO 1 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$33ba8b8e] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-02-24 17:07:01.769  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)

docker编写文件：

version: "3"
services:
  articleservice:
    image: elps/articleservice:1.1.0.5
    deploy:
      replicas: 2
      restart_policy:
        condition: on-failure
      placement:
        constraints:
          - node.role == manager
    ports:
      - "8081:8080"
...

Answer 1

在内部，在启动期间，您的Java应用程序需要被告知它应该在端口8083上启动——简单地将其放入port forward配置不会起作用，因为Java应用程序的启动与您想要如何配置容器来启动是隔离的。

通常，对于大多数OSS应用程序，应该有一些环境变量，您可以设置这些变量，使Java应用程序在某个主机/端口上启动（在容器网络接口内，这与主机上的不同）。

之后，如果您有8080:8083，这意味着您希望将容器的8083端口转发到主机系统的8080端口。