[英]Docker-compose: bind Celery to Postgres database
我的Docker應用程序以Flask作為后端運行,而Celery作為異步任務管理器運行。 然后將任務結果轉儲到Postgres擁有的SQLalchemy數據庫中。
但是,我無法使Celery與Postgres進行交互。
組態:
docker-compose-dev.yml
web:
build:
context: ./services/web
dockerfile: Dockerfile-dev
volumes:
- './services/web:/usr/src/app'
ports:
- 5001:5000
environment:
- FLASK_ENV=development
- APP_SETTINGS=project.config.DevelopmentConfig
- DATABASE_URL=postgres://postgres:postgres@web-db:5432/web_dev
- DATABASE_TEST_URL=postgres://postgres:postgres@web-db:5432/web_test
- SECRET_KEY=my_precious
depends_on:
- web-db
- redis
web-db:
build:
context: ./services/web/project/db
dockerfile: Dockerfile
ports:
- 5435:5432
environment:
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=postgres
celery:
image: dev3_web
restart: always
volumes:
- ./services/web:/usr/src/app
- ./services/web/celery_logs:/usr/src/app/celery_logs
command: celery worker -A celery_worker.celery --loglevel=DEBUG --logfile=celery_logs/celery.log -Q cache
environment:
- CELERY_BROKER=redis://redis:6379/0
- CELERY_RESULT_BACKEND=redis://redis:6379/0
depends_on:
- web
- redis
links:
- redis:redis
- web-db
redis:
image: redis:5.0.3-alpine
restart: always
expose:
- '6379'
ports:
- '6379:6379'
monitor:
image: dev3_web
ports:
- 5555:5555
command: flower -A celery_worker.celery --port=5555 --broker=redis://redis:6379/0
depends_on:
- web
- redis
日志:
celery_1| Neither SQLALCHEMY_DATABASE_URI nor SQLALCHEMY_BINDS is set. Defaulting SQLALCHEMY_DATABASE_URI to "sqlite:///:memory:".
如何將Celery任務綁定到我的Postgres數據庫?
celery_1 | Neither SQLALCHEMY_DATABASE_URI nor SQLALCHEMY_BINDS is set. Defaulting SQLALCHEMY_DATABASE_URI to "sqlite:///:memory:".
提示您的芹菜容器中的錯誤缺少對環境有價值的設置,因此您可能需要基於dev3_web創建的DATABASE_URL設置。
更改需要應用於您的docker-compose-dev.yml:
celery:
image: dev3_web
restart: always
volumes:
- ./services/web:/usr/src/app
- ./services/web/celery_logs:/usr/src/app/celery_logs
command: celery worker -A celery_worker.celery --loglevel=DEBUG --logfile=celery_logs/celery.log -Q cache
environment:
- CELERY_BROKER=redis://redis:6379/0
- CELERY_RESULT_BACKEND=redis://redis:6379/0
- APP_SETTINGS=project.config.DevelopmentConfig
- DATABASE_URL=postgres://postgres:postgres@web-db:5432/web_dev
depends_on:
- web
- redis
links:
- redis:redis
- web-db
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