Question

我正在尝试使用Django后端和postgresql数据库在Anger上使用Angular 4前端在Docker上部署我的项目。此时我的文件如下所示。我注意到这是否正确完成？我使用heroku container:push web --app myproject推送它但它不起作用（Logs）。我假设如果我使用Docker，我不必创建Procfile等？可能由于缺少数据库迁移而导致错误吗？

我不知道我正朝着正确的方向前进，但我正在尝试迁移我的数据库。也许我的错误是由于缺乏db引起的？

当我运行heroku run python manage.py migrate时，我得到：

django.db.utils.OperationalError：无法翻译主机名＆＃34; db＆＃34; 地址：名称或服务未知

日志：

2017-07-07T10:27:30.448951+00:00 heroku[web.1]: State changed from crashed to starting
2017-07-07T10:27:30.436282+00:00 heroku[web.1]: Process exited with status 0
2017-07-07T10:27:50.846928+00:00 heroku[web.1]: Starting process with command `python3`
2017-07-07T10:27:53.350381+00:00 heroku[web.1]: Process exited with status 0
2017-07-07T10:27:53.365013+00:00 heroku[web.1]: State changed from starting to crashed
2017-07-07T10:27:53.876208+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host= myproject.herokuapp.com request_id=e1f8edfc-7dc4-4bd3-91be-0a853e948452 fwd="109.173.154.199" dyno= connect= service= status=503 bytes= protocol=https
2017-07-07T10:28:43.444860+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host= myproject.herokuapp.com request_id=361846d1-41cd-403a-989f-4c29a0d1179e fwd="109.173.154.199" dyno= connect= service= status=503 bytes= protocol=https
2017-07-07T10:28:43.984059+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host= myproject.herokuapp.com request_id=658795c8-0ba7-4988-9d39-34601b1334c7 fwd="109.173.154.199" dyno= connect= service= status=503 bytes= protocol=https
2017-07-07T10:28:44.673789+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host= myproject.herokuapp.com request_id=63fbabdc-7ba7-4997-81be-c601a0d83368 fwd="109.173.154.199" dyno= connect= service= status=503 bytes= protocol=https
2017-07-07T10:29:53.091547+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host= myproject.herokuapp.com request_id=a3943544-9dc4-44f0-b788-a462cdfba7d0 fwd="109.173.154.199" dyno= connect= service= status=503 bytes= protocol=https
2017-07-07T10:29:54.419623+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host= myproject.herokuapp.com request_id=eb5191e2-21d9-410c-823e-c57bb0fb7fa4 fwd="109.173.154.199" dyno= connect= service= status=503 bytes= protocol=https

项目树：

├── Backend
│   ├── AI
│   │   ├── __init__.py
│   │   ├── __pycache__
│   │   │   ├── __init__.cpython-36.pyc
│   │   │   ├── settings.cpython-36.pyc
│   │   │   ├── urls.cpython-36.pyc
│   │   │   └── wsgi.cpython-36.pyc
│   │   ├── settings.py
│   │   ├── urls.py
│   │   └── wsgi.py
│   └── manage.py
├── Dockerfile
├── init.sql
├── Frontend
│   └── angularProject
        ├── Dockerfile
│       └── all files in my angular project 
├── docker-compose.yml
└── requirements.txt

Frontend的Dockerfile：

# Create image based on the official Node 6 image from dockerhub
FROM node:6

# Create a directory where our app will be placed
RUN mkdir -p /usr/src/app

# Change directory so that our commands run inside this new directory
WORKDIR /usr/src/app

# Copy dependency definitions
COPY package.json /usr/src/app

# Install dependecies
RUN npm install

# Get all the code needed to run the app
COPY . /usr/src/app

# Expose the port the app runs in
EXPOSE 4200

# Serve the app
CMD ["npm", "start"]

主目录的Dockerfile：

FROM python:3.6.1
ENV PYTHONUNBUFFERED 1
RUN mkdir /code
WORKDIR /code
ADD requirements.txt /code/
RUN pip3 install -r requirements.txt
ADD . /code/

搬运工-compose.yml：

version: '3'

services:
  db:
    image: postgres
    environment:
      POSTGRES_USER: aso
      POSTGRES_PASSWORD: somepass
  django:
    build: .
    command: python3 MainDirectory/backend/myProject/manage.py runserver 0.0.0.0:8001
    volumes:
      - .:/code
    ports:
      - "8001:8001"
    depends_on:
      - db
  angular:
    build: MainDirectory/frontend
    ports:
      - "4200:4200"
    depends_on:
      - django

init.sql：

CREATE USER myUser;
CREATE DATABASE myProject;
GRANT ALL PRIVILEGES ON DATABASE myProject TO myUser;

Answer 1

在我看来，你没有把容器链接到需要的地方。如果您希望 django 显示 db ，请将links指令添加到 docker-compose.yml ：

...

  django:
    build: .
    command: python3 MainDirectory/backend/myProject/manage.py runserver 0.0.0.0:8001
    volumes:
      - .:/code
    ports:
      - "8001:8001"
    depends_on:
      - db
    links:
      - db

这样就可以正确解析 db 主机名。希望。

希望这会有所帮助。 ...

Answer 2

您应该使用docker networks将容器链接在一起。

这样的事情：

version: '3'

services:
    db:
        image: postgres
        environment:
            POSTGRES_USER: aso
            POSTGRES_PASSWORD: somepass
        networks:
            - app
    django:
        build: .
        command: python3 MainDirectory/backend/myProject/manage.py runserver 0.0.0.0:8001
        volumes:
            - .:/code
        ports:
            - "8001:8001"
        networks:
            - app
        depends_on:
            - db
    angular:
        build: MainDirectory/frontend
        ports:
            - "4200:4200"
        networks:
            - app
        depends_on:
            - django
networks:
    app:

这使您可以更轻松地添加和删除需要通信而不是链接的容器和服务。

使用Angular 4，Django和postgresql

2 个答案: