Django +芹菜 - 为什么我的周期性任务没有运行？

Question

I'm working in a periodic task using django + celery. My project has django-celery==3.1.17, the broker used is Redis and it is working.

In my settings file:

CELERYBEAT_SCHEDULE={
    'delivery_send': {
        'task': 'delivery.tasks.DeliverySendTask',
        'schedule': timedelta(minutes=1),
        'args': [],
    },
}

CELERY_ROUTES = {
    'delivery.tasks.DeliverySendTask': {
        'queue': 'periodic_tasks',
        'routing_key': 'periodic_tasks'
    }, 
}

There are more celery settings, but I guess these two are the most relevant for this question.

The task:

class DeliverySendTask(Task):
    def run(self, *args, **kwargs):   
        logger.info('executing task!')     
        from .models import Dispatch
        Dispatch.objects.all().delete()

Then I run python manage.py celery beat and see in the console

[2016-06-23 14:32:01,230: INFO/MainProcess] Scheduler: Sending due task delivery_send (delivery.tasks.DeliverySendTask)

But the delete is never actually executed. What am I missing?

Thanks for any help.

Answer 1

celery beat does not execute tasks. Only schedule tasks into queue. celery worker executes tasks.

To execute tasks periodically you have to start both celery beat and celery worker .

python manage.py celery beat
python manage.py celery worker

Answer 2

Install celery too. Then dont run it with manage.py. Run it like this:

celery -A your_app_name worker -l info -B -E

so without python manage.py