gunicorn ModuleNotFound 错误，之前工作正常

Question

我有一个 docker-compose 文件，直到今天它都运行良好，但当我尝试使用 gunicorn 启动我的网络服务器时它才开始抛出错误。日志看起来像：

    flask_apis  | [2019-09-05 21:20:04 +0000] [1] [INFO] Starting gunicorn 19.9.0
flask_apis  | [2019-09-05 21:20:04 +0000] [1] [INFO] Listening at: http://0.0.0.0:8000 (1)
flask_apis  | [2019-09-05 21:20:04 +0000] [1] [INFO] Using worker: sync
flask_apis  | [2019-09-05 21:20:04 +0000] [8] [INFO] Booting worker with pid: 8
flask_apis  | [2019-09-05 21:20:04 +0000] [8] [ERROR] Exception in worker process
flask_apis  | Traceback (most recent call last):
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
flask_apis  |     worker.init_process()
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/workers/base.py", line 129, in init_process
flask_apis  |     self.load_wsgi()
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/workers/base.py", line 138, in load_wsgi
flask_apis  |     self.wsgi = self.app.wsgi()
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
flask_apis  |     self.callable = self.load()
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 52, in load
flask_apis  |     return self.load_wsgiapp()
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
flask_apis  |     return util.import_app(self.app_uri)
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/util.py", line 350, in import_app
flask_apis  |     __import__(module)
flask_apis  | ModuleNotFoundError: No module named 'fintech'
flask_apis  | [2019-09-05 21:20:04 +0000] [8] [INFO] Worker exiting (pid: 8)
flask_apis  | [2019-09-05 21:20:04 +0000] [9] [INFO] Booting worker with pid: 9
flask_apis  | [2019-09-05 21:20:04 +0000] [9] [ERROR] Exception in worker process
flask_apis  | Traceback (most recent call last):
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
flask_apis  |     worker.init_process()
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/workers/base.py", line 129, in init_process
flask_apis  |     self.load_wsgi()
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/workers/base.py", line 138, in load_wsgi
flask_apis  |     self.wsgi = self.app.wsgi()
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
flask_apis  |     self.callable = self.load()
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 52, in load
flask_apis  |     return self.load_wsgiapp()
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
flask_apis  |     return util.import_app(self.app_uri)
flask_apis  |   File "/usr/local/lib/python3.7/site-packages/gunicorn/util.py", line 350, in import_app
flask_apis  |     __import__(module)
flask_apis  | ModuleNotFoundError: No module named 'fintech'

我的docker文件看起来像

FROM python:3.7-slim

WORKDIR /app

RUN pip install --upgrade pip

COPY requirements.txt .
RUN pip install -r requirements.txt

COPY . .

我的 docker-compose 该服务器的文件：

services:

  api:
    build: 
      context: .
      dockerfile: ./Dockerfile
    image: flask-pywren
    container_name: flask_apis
    command: /usr/local/bin/gunicorn -w 2 -b :8000 fintech.flask_entrypoint:app
    env_file:
     - ./docker.env
    expose:
      - "8000"
    volumes:
      - .:/app/

有趣的是我可以打开 docker 图片里面的 sh:

docker run -it flask-pywren sh

和运行

/usr/local/bin/gunicorn -w 2 -b :8000 fintech.flask_entrypoint:app

gunicorn 启动良好。唯一能想到的就是docker-compose不是在WORKDIR开始的吗？我还将 working_dir: "/app" 添加到 docker-compose 文件中，但这也不起作用。我真的很困惑为什么这突然没有按预期工作。

Answer 1

如果您在日志中看到，很明显 ModuleNotFoundError: No module named 'fintech'。

您需要安装fintech。

FROM python:3.7-slim

WORKDIR /app

RUN pip install --upgrade pip
RUN pip install fintech

到目前为止 docker-compose 可以改变 docker 的行为是

    volumes:
      - .:/app/

它将覆盖 /app 下在构建期间复制的所有内容 COPY . .

understanding-docker-and-docker-compose

gunicorn ModuleNotFound 错误，之前工作正常

gunicorn ModuleNotFound error, was working previously

python

gunicorn

docker

docker-compose