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Docker & Celery - ERREUR: Pidfile (celerybeat.pid) existe déjà

L'application se compose de: - Django - Redis - Celery - Docker - Postgres

Avant de fusionner le projet dans Docker, tout fonctionnait correctement et correctement, mais une fois qu'il a été déplacé dans des conteneurs, quelque chose de mal a commencé à se produire. Au début, cela commence parfaitement bien, mais après un certain temps, je reçois une erreur de suivi:

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

J'ai du mal avec ça depuis un moment, mais en ce moment j'abandonne littéralement. Je n'ai aucune idée de ce qui ne va pas.

Dockerfile:

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:

Veuillez ignorer "test_database1_volume" car il n'existe qu'à des fins de test.

djangodockerrediscelery
6
D Komo

Une autre solution (tirée de https://stackoverflow.com/a/17674248/39296 ) consiste à utiliser --pidfile = (sans chemin d'accès) pour ne pas créer de fichier pid du tout. Même effet que la réponse de Siyu ci-dessus.

7
Dylan Anthony

Je crois qu'il y a un pidfile dans le répertoire de votre projet ./ puis lorsque vous exécutez le conteneur, il est monté dedans. (donc RUN find . -type f -name "celerybeat.pid" -exec rm -f {} \; n'a eu aucun effet).

Vous pouvez utiliser celery --pidfile=/opt/celeryd.pid pour spécifier un chemin non monté afin qu'il ne soit pas mis en miroir sur l'hôte.

6
Siyu

Sinon, créez une commande Django celery_kill.py

import shlex
import subprocess

from Django.core.management.base import BaseCommand


class Command(BaseCommand):
    def handle(self, *args, **options):
        kill_worker_cmd = 'pkill -9 celery'
        subprocess.call(shlex.split(kill_worker_cmd))

docker-compose.yml:

  celery:
    build: ./src
    restart: always
    command: celery -A project worker -l info
    volumes:
      - ./src:/var/lib/celery/data/
    depends_on:
      - db
      - redis
      - app

  celery-beat:
    build: ./src
    restart: always
    command: celery -A project beat -l info --pidfile=/tmp/celeryd.pid
    volumes:
      - ./src:/var/lib/beat/data/
    depends_on:
      - db
      - redis
      - app

et Makefile:

run:
    docker-compose up -d --force-recreate
    docker-compose exec app python manage.py celery_kill
    docker-compose restart
    docker-compose exec app python manage.py migrate
0
Victor Villacorta