Docker connection拒绝吊死Django

Question

当我运行容器时，它就挂在下一行上，如果我写

curl http://0.0.0.0:8000/

我得到了

无法连接到0.0.0.0端口8000：连接拒绝

FROM python:3.6.1

# Set the working directory to /app
WORKDIR /app

# Copy the current directory contents into the container at /app
ADD . /app

RUN pip3 install -r requirements.txt

CMD ["python3", "dockerizing/manage.py", "runserver", "0.0.0.0:8000"]

version: "3"
services:
  web:
    image: app1
    deploy:
      replicas: 5
      resources:
        limits:
          cpus: "0.1"
          memory: 50M
      restart_policy:
        condition: on-failure
    ports:
      - "8000:8000"
    networks:
      - webnet
networks:
  webnet:

顺便说一句，如果我用myapp图像运行docker ps，我会得到这样的结果：

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
e9633657f060        app1                "python3 dockerizi..."   5 seconds ago       Up 5 seconds                            friendly_dijkstra

当我使用django-compose.yml和Docker ps部署服务时，我得到了以下信息：

`MacBook-Pro-de-Jesus:docker-django Almaral$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
13677a71d9d5        app1:latest        "python3 dockerizin..."   15 seconds ago      Up 11 seconds                           getstartedlab_web.1.cq3zqmpfsii5g6m5r9qsnmtb1
c6693118ef70        app1:latest        "python3 dockerizin..."   16 seconds ago      Up 12 seconds                           getstartedlab_web.4.r472oh80s4zd1yymj447f1df6
f3822e47970b        app1:latest        "python3 dockerizin..."   16 seconds ago      Up 12 seconds                           getstartedlab_web.2.lkp43v9h30esjohcnf3pe31hi
f66a4038ebdf        app1:latest        "python3 dockerizin..."   16 seconds ago      Up 12 seconds                           getstartedlab_web.5.xxu01ruebd84tnlxmoymsu0vo
e3d31c419c11        app1:latest        "python3 dockerizin..."   16 seconds ago      Up 13 seconds                           getstartedlab_web.3.uqswgirmg22sjnekzmf5b4xo7`

Answer 1

您的Docker PS输出在端口列中没有显示任何内容。这意味着没有端口从主机转发到容器。

[...]     STATUS          PORTS                     NAMES
[...]     Up 5 seconds                              friendly_dijkstra

如果使用命令docker run运行容器，则应使用命令选项-p hostport:containerport显式指定主机和容器上的端口号

docker run -p 8000:8000 app1

现在，运行Docker ps应该会显示端口转发。

[...]     STATUS          PORTS                     NAMES
[...]     Up 5 seconds    0.0.0.0:8000->8000/tcp    friendly_dijkstra

如果使用docker-compose启动容器，则主机和容器端口已经在docker-compose.yml文件中配置，因此不需要命令行选项。

docker-compose up web

要使用docker compose，必须将其安装在主机上。它是一个python模块，因此您可以使用pippip install docker-compose安装它