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I am running django+celery with celerybeat, and i am getting this error
.../local/lib/python2.7/site-packages/celery/beat.py", line 367, in setup_schedule
writeback=True)
File "/usr/lib/python2.7/shelve.py", line 239, in open
return DbfilenameShelf(filename, flag, protocol, writeback)
File "/usr/lib/python2.7/shelve.py", line 223, in __init__
Shelf.__init__(self, anydbm.open(filename, flag), protocol, writeback)
File "/usr/lib/python2.7/anydbm.py", line 85, in open
return mod.open(file, flag, mode)
File "/usr/lib/python2.7/dbhash.py", line 18, in open
return bsddb.hashopen(file, flag, mode)
File "/usr/lib/python2.7/bsddb/__init__.py", line 364, in hashopen
d.open(file, db.DB_HASH, flags, mode)
DBAccessError: (13, 'Permission denied')
[2014-11-05 06:39:20,901: INFO/MainProcess] mingle: all alone
I used python manage.py celeryd -B to run celery beat.
It seems that running the celery worker is not the issue, but the celerybeat worker is not initialising. any suggestions as to where i could find the database which celery is trying to access?
I'm running django=1.5 and django-celery==3.1.10
945
Using django-celery-beatThis extension enables the user to store periodic tasks in a Django database and manage the tasks using the Django Admin interface. Use the following steps to install django-celery-beat in the simpletask project.
celery beat is a scheduler. It kicks off tasks at regular intervals, which are then executed by the worker nodes available in the cluster. By default the entries are taken from the CELERYBEAT_SCHEDULE setting, but custom stores can also be used, like storing the entries in an SQL database.
It allows you to offload work from your Python app. Once you integrate Celery into your app, you can send time-intensive tasks to Celery's task queue. That way, your web app can continue to respond quickly to users while Celery completes expensive operations asynchronously in the background.
I asked too soon!
answering my own question in case anyone else face the same issue.
The issue was because I did not have write permission in the folder my django project was running.
from the documentation (http://celery.readthedocs.org/en/latest/userguide/periodic-tasks.html#starting-the-scheduler)
Beat needs to store the last run times of the tasks in a local database file (named celerybeat-schedule by default), so it needs access to write in the current directory
fixed the issue by running
python manage.py celeryd -B -s /path/to/where/i/have/write-access/celerybeat-schedule
Hope that this helps someone.
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