在我的django应用程序中安装celery后，我在Django shell中运行以下命令：
import os
from celery import Celery
from django.apps import apps
# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'ns.settings')
app = Celery('')
app.config_from_object('django.conf:settings')
@app.task
def add(x, y):
return x + y
add.delay(8, 8)
然后，我发现它永远不会在delay函数中继续运行。
我中止命令后，消息是
/usr/local/lib/python2.7/site-packages/celery/app/task.pyc in delay(self, *args, **kwargs)
411 celery.result.AsyncResult: Future promise.
412 """
--> 413 return self.apply_async(args, kwargs)
414
415 def apply_async(self, args=None, kwargs=None, task_id=None, producer=None,
/usr/local/lib/python2.7/site-packages/celery/app/task.pyc in apply_async(self, args, kwargs, task_id, producer, link, link_error, shadow, **options)
534 link=link, link_error=link_error, result_cls=self.AsyncResult,
535 shadow=shadow, task_type=self,
--> 536 **options
537 )
538
/usr/local/lib/python2.7/site-packages/celery/app/base.pyc in send_task(self, name, args, kwargs, countdown, eta, task_id, producer, connection, router, result_cls, expires, publisher, link, link_error, add_to_parent, group_id, retries, chord, reply_to, time_limit, soft_time_limit, root_id, parent_id, route_name, shadow, chain, task_type, **options)
735 with P.connection._reraise_as_library_errors():
736 self.backend.on_task_call(P, task_id)
--> 737 amqp.send_task_message(P, name, message, **options)
738 result = (result_cls or self.AsyncResult)(task_id)
739 if add_to_parent:
/usr/local/lib/python2.7/site-packages/celery/app/amqp.pyc in send_task_message(producer, name, message, exchange, routing_key, queue, event_dispatcher, retry, retry_policy, serializer, delivery_mode, compression, declare, headers, exchange_type, **kwargs)
552 delivery_mode=delivery_mode, declare=declare,
553 headers=headers2,
--> 554 **properties
555 )
556 if after_receivers:
/usr/local/lib/python2.7/site-packages/kombu/messaging.pyc in publish(self, body, routing_key, delivery_mode, mandatory, immediate, priority, content_type, content_encoding, serializer, headers, compression, exchange, retry, retry_policy, declare, expiration, **properties)
179 body, priority, content_type, content_encoding,
180 headers, properties, routing_key, mandatory, immediate,
--> 181 exchange_name, declare,
182 )
183
/usr/local/lib/python2.7/site-packages/kombu/connection.pyc in _ensured(*args, **kwargs)
492 for retries in count(0): # for infinity
493 try:
--> 494 return fun(*args, **kwargs)
495 except conn_errors as exc:
496 if got_connection and not has_modern_errors:
/usr/local/lib/python2.7/site-packages/kombu/messaging.pyc in _publish(self, body, priority, content_type, content_encoding, headers, properties, routing_key, mandatory, immediate, exchange, declare)
185 headers, properties, routing_key, mandatory,
186 immediate, exchange, declare):
--> 187 channel = self.channel
188 message = channel.prepare_message(
189 body, priority, content_type,
/usr/local/lib/python2.7/site-packages/kombu/messaging.pyc in _get_channel(self)
207 channel = self._channel
208 if isinstance(channel, ChannelPromise):
--> 209 channel = self._channel = channel()
210 self.exchange.revive(channel)
211 if self.on_return:
/usr/local/lib/python2.7/site-packages/kombu/utils/functional.pyc in __call__(self)
36 return self.__value__
37 except AttributeError:
---> 38 value = self.__value__ = self.__contract__()
39 return value
40
/usr/local/lib/python2.7/site-packages/kombu/messaging.pyc in <lambda>()
222 connection = channel
223 self.__connection__ = connection
--> 224 channel = ChannelPromise(lambda: connection.default_channel)
225 if isinstance(channel, ChannelPromise):
226 self._channel = channel
/usr/local/lib/python2.7/site-packages/kombu/connection.pyc in default_channel(self)
817 """
818 # make sure we're still connected, and if not refresh.
--> 819 self.ensure_connection()
820 if self._default_channel is None:
821 self._default_channel = self.channel()
/usr/local/lib/python2.7/site-packages/kombu/connection.pyc in ensure_connection(self, errback, max_retries, interval_start, interval_step, interval_max, callback, reraise_as_library_errors)
403 (), {}, on_error, max_retries,
404 interval_start, interval_step, interval_max,
--> 405 callback)
406 return self
407
/usr/local/lib/python2.7/site-packages/kombu/utils/functional.pyc in retry_over_time(fun, catch, args, kwargs, errback, max_retries, interval_start, interval_step, interval_max, callback)
343 if callback:
344 callback()
--> 345 sleep(1.0)
346 # sleep remainder after int truncation above.
347 sleep(abs(int(tts) - tts))
KeyboardInterrupt:
我是芹菜的新手，真的不知道是什么让这种情况发生。你能给我一些线索吗？
我的芹菜是4.1.0，海带是4.1.0。
芹菜的现状：
tasks_1 | -------------- celery@31a95a569866 v4.1.0 (latentcall)
tasks_1 | ---- **** -----
tasks_1 | --- * *** * -- Linux-4.9.87-linuxkit-aufs-x86_64-with-debian-8.10 2018-05-29 15:36:15
tasks_1 | -- * - **** ---
tasks_1 | - ** ---------- [config]
tasks_1 | - ** ---------- .> app: __main__:0x7f6a91dbd810
tasks_1 | - ** ---------- .> transport: amqp://guest:**@localhost:5672//
tasks_1 | - ** ---------- .> results: disabled://
tasks_1 | - *** --- * --- .> concurrency: 2 (prefork)
tasks_1 | -- ******* ---- .> task events: ON
tasks_1 | --- ***** -----
tasks_1 | -------------- [queues]
tasks_1 | .> default exchange=default(direct) key=default
答案 0 :(得分：1)
您必须更新项目conf文件夹 init .py文件：
from __future__ import absolute_import
# This will make sure the app is always imported when
# Django starts so that shared_task will use this app.
from .celery import app as celery_app
答案 1 :(得分：0)
很可能，您的代理没有运行，因此Celery无法将消息放入队列中。您能否仔细检查RabbitMQ / Redis（或您在Celery配置中定义的其他内容）是否正在运行？
在Ubuntu上运行RabbitMQ（似乎是默认代理）的示例命令：
sudo service rabbitmq-server start