Start celery worker throws “no attribute 'worker_state_db'”

Question

When I am trying to start celery worker in Django app as:

celery -A myApp worker -l info

I get following error:

File \"/hom         


        

Answer 1

The bug appears if an exception is raised while parsing settings. Such as when we set Django's SECRET_KEY (or any other setting) via an environment variable:

SECRET_KEY = os.environ['SECRET_KEY']

To solve the problem you can switch back to:

SECRET_KEY = "asdfasdfasdf"

or use:

SECRET_KEY = os.environ.get('SECRET_KEY', '')

You can also find which setting caused the problem if you comment our the following line in celery.py file and start the worker again:

app.config_from_object('django.conf:settings', namespace='CELERY')