问题
My question is a duplicate of this one, but more detailed.
The problem is that I have a BROKER_URL set in my Celery config file, but that isn't reflected in and I am loading the config: I checked, and it is being loaded - in fact, other constants defined there are being set, just not BROKER_URL.
This appears to be a bug, but I wanted to be sure.
celeryconfig.py:
BROKER_URL = "amqp://user:password@remote.server.com:5672//vhost"
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_ENABLE_UTC = True
(JSON is being used as the serializer, not Pickle, so I know this is working.)
app.py:
from celery import Celery
app = Celery('tasks', broker='amqp://guest@localhost//')
app.config_from_object('celeryconfig')
Invoking the Worker:
celery -A app.app worker -l info
But then I get this:
[2013-11-12 11:20:51,610: INFO/MainProcess] consumer: Connected to amqp://guest@127.0.0.1:5672//.
I tried breaking up BROKER_URL, but to no avail:
BROKER_TRANSPORT = 'amqp'
BROKER_USER = 'user'
BROKER_PASSWORD = 'password'
BROKER_HOST = 'remote.server.com'
BROKER_PORT = 5672
BROKER_VHOST = '/vhost'
Interestingly, it does work when I explicitly set the BROKER_URL in app.py:
from celery import Celery
app = Celery('tasks', broker='amqp://guest@localhost//')
app.config_from_object('celeryconfig')
app.conf.BROKER_URL = "amqp://user:password@remote.server.com:5672//vhost"
回答1:
Of course, I realized what I'd done wrong immediately after finishing this question, but I still posted it because someone might find it useful.
My problem is that I copied and pasted code from the tutorial (*facepalm).
I'm overriding the config file when I define the app with a broker arg:
app = Celery('tasks', broker='amqp://guest@localhost//')
Simply remove that:
app = Celery('tasks')
Tada! Everything works fine... and I learned a valuable lesson.
回答2:
Just for clarification because you are using this:
app.config_from_object('django.conf:settings', namespace='CELERY')
in your celeryconfig.py:
CELERY_BROKER_URL = "amqp://user:password@remote.server.com:5672//vhost"
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_ENABLE_UTC = True
回答3:
Just for anyone else with a similar issue, I ran into a similar problem with a different cause.
I'm using celery with django on heroku, but in my dev environment I am using django-environ to populate environment variables from a file.
I forgot to preface my celery worker command with DJANGO_READ_DOT_ENV_FILE=1
So I went from:
celery -A myapp worker -l info
to
DJANGO_READ_DOT_ENV_FILE=1 celery -A myapp worker -l info
Silly, but a good reminder. Hope it saves someone some time.
来源：https://stackoverflow.com/questions/19938719/celery-ignoring-broker-url-in-config-file