django - Docker&Celery - 错误 : Pidfile (celerybeat. pid) 已经存在

Question

应用程序包括:- Django - 雷迪斯- celery - docker - Postgres

在将项目合并到 docker 中之前，一切都运行良好，但是一旦将其移入容器中，就开始出现问题。一开始一切正常，但过了一会儿我确实收到以下错误:

celery-beat_1  | ERROR: Pidfile (celerybeat.pid) already exists.

我已经为此苦苦挣扎了一段时间，但现在我真的放弃了。我不知道它有什么问题。

docker 文件:

FROM python:3.7

ENV PYTHONUNBUFFERED 1
RUN mkdir -p /opt/services/djangoapp/src


COPY /scripts/startup/entrypoint.sh entrypoint.sh
RUN chmod +x /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]

COPY Pipfile Pipfile.lock /opt/services/djangoapp/src/
WORKDIR /opt/services/djangoapp/src
RUN pip install pipenv && pipenv install --system

COPY . /opt/services/djangoapp/src

RUN find . -type f -name "celerybeat.pid" -exec rm -f {} \;

RUN sed -i "s|django.core.urlresolvers|django.urls |g" /usr/local/lib/python3.7/site-packages/vanilla/views.py
RUN cp /usr/local/lib/python3.7/site-packages/celery/backends/async.py /usr/local/lib/python3.7/site-packages/celery/backends/asynchronous.py
RUN rm /usr/local/lib/python3.7/site-packages/celery/backends/async.py
RUN sed -i "s|async|asynchronous|g" /usr/local/lib/python3.7/site-packages/celery/backends/redis.py
RUN sed -i "s|async|asynchronous|g" /usr/local/lib/python3.7/site-packages/celery/backends/rpc.py

RUN cd app && python manage.py collectstatic --no-input



EXPOSE 8000
CMD ["gunicorn", "-c", "config/gunicorn/conf.py", "--bind", ":8000", "--chdir", "app", "example.wsgi:application", "--reload"]

docker-compose.yml:

version: '3'

services:

  djangoapp:
    build: .
    volumes:
      - .:/opt/services/djangoapp/src
      - static_volume:/opt/services/djangoapp/static  # <-- bind the static volume
      - media_volume:/opt/services/djangoapp/media  # <-- bind the media volume
      - static_local_volume:/opt/services/djangoapp/src/app/static
      - media_local_volume:/opt/services/djangoapp/src/app/media
      - .:/code
    restart: always
    networks:
      - nginx_network
      - database1_network # comment when testing
      # - test_database1_network # uncomment when testing
      - redis_network
    depends_on:
      - database1 # comment when testing
      # - test_database1 # uncomment when testing
      - migration
      - redis

  # base redis server
  redis:
    image: "redis:alpine"
    restart: always
    ports: 
      - "6379:6379"
    networks:
      - redis_network
    volumes:
      - redis_data:/data

  # celery worker
  celery:
    build: .
    command: >
      bash -c "cd app && celery -A example worker --without-gossip --without-mingle --without-heartbeat -Ofair"
    volumes:
      - .:/opt/services/djangoapp/src
      - static_volume:/opt/services/djangoapp/static  # <-- bind the static volume
      - media_volume:/opt/services/djangoapp/media  # <-- bind the media volume    
      - static_local_volume:/opt/services/djangoapp/src/app/static
      - media_local_volume:/opt/services/djangoapp/src/app/media
    networks:
      - redis_network
      - database1_network # comment when testing
      # - test_database1_network # uncomment when testing
    restart: always
    depends_on:
      - database1 # comment when testing
      # - test_database1 # uncomment when testing
      - redis
    links:
      - redis

  celery-beat:
    build: .
    command: >
      bash -c "cd app && celery -A example beat"
    volumes:
      - .:/opt/services/djangoapp/src
      - static_volume:/opt/services/djangoapp/static  # <-- bind the static volume
      - media_volume:/opt/services/djangoapp/media  # <-- bind the media volume
      - static_local_volume:/opt/services/djangoapp/src/app/static
      - media_local_volume:/opt/services/djangoapp/src/app/media
    networks:
      - redis_network
      - database1_network # comment when testing
      # - test_database1_network # uncomment when testing
    restart: always
    depends_on:
      - database1 # comment when testing
      # - test_database1 # uncomment when testing
      - redis
    links:
      - redis

  # migrations needed for proper db functioning
  migration:
    build: .
    command: >
      bash -c "cd app && python3 manage.py makemigrations && python3 manage.py migrate"
    depends_on:
      - database1 # comment when testing
      # - test_database1 # uncomment when testing
    networks:
     - database1_network # comment when testing
     # - test_database1_network # uncomment when testing

  # reverse proxy container (nginx)
  nginx:
    image: nginx:1.13
    ports:
      - 80:80
    volumes:
      - ./config/nginx/conf.d:/etc/nginx/conf.d
      - static_volume:/opt/services/djangoapp/static  # <-- bind the static volume
      - media_volume:/opt/services/djangoapp/media  # <-- bind the media volume
      - static_local_volume:/opt/services/djangoapp/src/app/static
      - media_local_volume:/opt/services/djangoapp/src/app/media 
    restart: always
    depends_on:
      - djangoapp
    networks:
      - nginx_network

  database1: # comment when testing
    image: postgres:10 # comment when testing
    env_file: # comment when testing
      - config/db/database1_env # comment when testing
    networks: # comment when testing
      - database1_network # comment when testing
    volumes: # comment when testing
      - database1_volume:/var/lib/postgresql/data # comment when testing

  # test_database1: # uncomment when testing
    # image: postgres:10 # uncomment when testing
    # env_file: # uncomment when testing
      # - config/db/test_database1_env # uncomment when testing
    # networks: # uncomment when testing
      # - test_database1_network # uncomment when testing
    # volumes: # uncomment when testing
      # - test_database1_volume:/var/lib/postgresql/data # uncomment when testing


networks:
  nginx_network:
    driver: bridge
  database1_network: # comment when testing
    driver: bridge # comment when testing
  # test_database1_network: # uncomment when testing
    # driver: bridge # uncomment when testing
  redis_network:
    driver: bridge
volumes:
  database1_volume: # comment when testing
  # test_database1_volume: # uncomment when testing
  static_volume:  # <-- declare the static volume
  media_volume:  # <-- declare the media volume
  static_local_volume:
  media_local_volume:
  redis_data:

请忽略“test_database1_volume”，因为它仅用于测试目的。

Answer 1

另一个解决方案(取自 https://stackoverflow.com/a/17674248/39296 )是使用 --pidfile= (没有路径)根本不创建 pidfile。与上述 Siyu 的回答效果相同。