芹菜周期性任务未启动

Question

我在我的django项目中使用芹菜来运行周期性任务。按照芹菜网站上的标准教程，这是我的项目结构项目

|_ settings.py
|_ __init__.py
|_ celery_app.py (instead of celery.py)
|_ app
   |_ tasks.py

settings.py 中的相关部分看起来像这样——

CELERY_RESULT_BACKEND = "amqp"
CELERY_IMPORTS = ["app.tasks"]
CELERY_ALWAYS_EAGER = True    
CELERY_RESULT_BACKEND = 'djcelery.backends.database:DatabaseBackend'
CELERYBEAT_SCHEDULER = 'djcelery.schedulers.DatabaseScheduler'
CELERY_DB_REUSE_MAX = 1
CELERY_ACCEPT_CONTENT = ['json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TIMEZONE = 'America/New York'
CELERYBEAT_SCHEDULE = {
    'test_task': {
        'task': 'tasks.test_task',
        'schedule': timedelta(seconds=5),
        'args': (),
    },
}

celery_app.py看起来像这样——

from __future__ import absolute_import
import os
from celery import Celery
from django.conf import settings
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'project.settings')
app = Celery('project')
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)

tasks.py 看起来像这样——

from __future__ import absolute_import
from celery.utils.log import get_task_logger
from celery import task
from celery_app import app
logger = get_task_logger(__name__)
@app.task
def test_task():
    for i in range(0, 4):
        logger.debug("celery test task")

当我运行芹菜工人时，我可以看到我的任务被发现了——

$ python manage.py celery -A project worker --loglevel=DEBUG --app=celery_app:app
 -------------- [e-mail] v3.1.19 (Cipater)
---- **** ----- 
--- * ***  * -- Darwin-15.4.0-x86_64-i386-64bit
-- * - **** --- 
- ** ---------- [config]
- ** ---------- .> app:         project:0x10d5b9a10
- ** ---------- .> transport:   amqp://sgcelery1:**@localhost:5672/sgceleryhost
- ** ---------- .> results:     djcelery.backends.database:DatabaseBackend
- *** --- * --- .> concurrency: 4 (prefork)
-- ******* ---- 
--- ***** ----- [queues]
 -------------- .> celery           exchange=celery(direct) key=celery

[tasks]
  . celery.backend_cleanup
  . celery.chain
  . celery.chord
  . celery.chord_unlock
  . celery.chunks
  . celery.group
  . celery.map
  . celery.starmap
  . app.tasks.test_task
[2016-04-24 23:54:55,452: INFO/MainProcess] Connected to amqp://sgcelery1:**@127.0.0.1:5672/sgceleryhost
[2016-04-24 23:54:55,471: INFO/MainProcess] mingle: searching for neighbors
[2016-04-24 23:54:56,481: INFO/MainProcess] mingle: all alone
[2016-04-24 23:54:56,497: WARNING/MainProcess] [e-mail] ready.

当我运行 beat 时，它会显示从 settings.py 中拾取的任务，但它从未真正运行过。

$ python manage.py celery -A project beat --app=celery_app:app --loglevel=DEBUG
[2016-04-24 23:55:04,059: DEBUG/MainProcess] Current schedule:
<ModelEntry: test_task tasks.test_task(*[], **{}) {4}>

我在这里错过了什么？

Answer 1

尝试设置 CELERY_ALWAYS_EAGER = False 。

设置CELERY_ALWAYS_EAGER = True可使任务同步运行，而无需使用芹菜。通过将其切换到 False 将使芹菜节拍捡起它并定期运行它。False 开关在开发模式下用于不希望芹菜处理任务时。

在此处查看文档

Answer 2

尝试使用 command：
celery -A project worker -B -E -Q beat --concurrency=1 -l INFO 此链接 关于芹菜钥匙和选项