尝试让它工作:使用教程 http://docs.celeryproject.org/en/latest/django/first-steps-with-django.html 在 Ubuntu 14.04 上运行 Django 1.6.11 + Celery 3.1.19 + Kombu 3.0.33所以我从这里完全重复了项目结构: https://github.com/celery/celery/tree/3.1/examples/django/
当我从 django 项目根目录运行命令时: /var/www/engine$ celery worker -l INFO -B
在我的应用程序vk_wall中，我有tasks.py文件，其中包含添加任务。
我收到一个错误:
graph@engine:/var/www/engine$ celery worker -l INFO -B
[2016-01-17 18:41:41,159: WARNING/MainProcess] /usr/local/lib/python3.4/dist-packages/celery/apps/worker.py:161: CDeprecationWarning:
Starting from version 3.2 Celery will refuse to accept pickle by default.
The pickle serializer is a security concern as it may give attackers
the ability to execute any command. It's important to secure
your broker from unauthorized access when using pickle, so we think
that enabling pickle should require a deliberate action and not be
the default choice.
If you depend on pickle then you should set a setting to disable this
warning and to be sure that everything will continue working
when you upgrade to Celery 3.2::
CELERY_ACCEPT_CONTENT = ['pickle', 'json', 'msgpack', 'yaml']
You must only enable the serializers that you will actually use.
warnings.warn(CDeprecationWarning(W_PICKLE_DEPRECATED))
-------------- celery@engine v3.1.19 (Cipater)
---- **** -----
--- * *** * -- Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty
-- * - **** ---
- ** ---------- [config]
- ** ---------- .> app: default:0x7f9c6495cc18 (.default.Loader)
- ** ---------- .> transport: amqp://guest:**@localhost:5672//
- ** ---------- .> results: disabled
- *** --- * --- .> concurrency: 2 (prefork)
-- ******* ----
--- ***** ----- [queues]
-------------- .> celery exchange=celery(direct) key=celery
[tasks]
[2016-01-17 18:41:41,187: INFO/Beat] beat: Starting...
[2016-01-17 18:41:41,212: ERROR/Beat] Removing corrupted schedule file 'celerybeat-schedule': error(13, 'Permission denied')
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/kombu/utils/__init__.py", line 323, in __get__
return obj.__dict__[self.__name__]
KeyError: 'scheduler'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 376, in setup_schedule
self._store = self._open_schedule()
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 366, in _open_schedule
return self.persistence.open(self.schedule_filename, writeback=True)
File "/usr/lib/python3.4/shelve.py", line 239, in open
return DbfilenameShelf(filename, flag, protocol, writeback)
File "/usr/lib/python3.4/shelve.py", line 223, in __init__
Shelf.__init__(self, dbm.open(filename, flag), protocol, writeback)
File "/usr/lib/python3.4/dbm/__init__.py", line 94, in open
return mod.open(file, flag, mode)
_gdbm.error: [Errno 13] Permission denied
[2016-01-17 18:41:41,219: ERROR/Beat] Process Beat
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/kombu/utils/__init__.py", line 323, in __get__
return obj.__dict__[self.__name__]
KeyError: 'scheduler'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 376, in setup_schedule
self._store = self._open_schedule()
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 366, in _open_schedule
return self.persistence.open(self.schedule_filename, writeback=True)
File "/usr/lib/python3.4/shelve.py", line 239, in open
return DbfilenameShelf(filename, flag, protocol, writeback)
File "/usr/lib/python3.4/shelve.py", line 223, in __init__
Shelf.__init__(self, dbm.open(filename, flag), protocol, writeback)
File "/usr/lib/python3.4/dbm/__init__.py", line 94, in open
return mod.open(file, flag, mode)
_gdbm.error: [Errno 13] Permission denied
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/billiard/process.py", line 292, in _bootstrap
self.run()
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 545, in run
self.service.start(embedded_process=True)
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 464, in start
humanize_seconds(self.scheduler.max_interval))
File "/usr/local/lib/python3.4/dist-packages/kombu/utils/__init__.py", line 325, in __get__
value = obj.__dict__[self.__name__] = self.__get(obj)
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 504, in scheduler
return self.get_scheduler()
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 499, in get_scheduler
lazy=lazy)
File "/usr/local/lib/python3.4/dist-packages/celery/utils/imports.py", line 53, in instantiate
return symbol_by_name(name)(*args, **kwargs)
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 358, in __init__
Scheduler.__init__(self, *args, **kwargs)
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 185, in __init__
self.setup_schedule()
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 378, in setup_schedule
self._store = self._destroy_open_corrupted_schedule(exc)
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 372, in _destroy_open_corrupted_schedule
return self._open_schedule()
File "/usr/local/lib/python3.4/dist-packages/celery/beat.py", line 366, in _open_schedule
return self.persistence.open(self.schedule_filename, writeback=True)
File "/usr/lib/python3.4/shelve.py", line 239, in open
return DbfilenameShelf(filename, flag, protocol, writeback)
File "/usr/lib/python3.4/shelve.py", line 223, in __init__
Shelf.__init__(self, dbm.open(filename, flag), protocol, writeback)
File "/usr/lib/python3.4/dbm/__init__.py", line 94, in open
return mod.open(file, flag, mode)
_gdbm.error: [Errno 13] Permission denied[2016-01-17 18:41:41,227: INFO/MainProcess] Connected to amqp://guest:**@127.0.0.1:5672//
[2016-01-17 18:41:41,252: INFO/MainProcess] mingle: searching for neighbors
[2016-01-17 18:41:42,272: INFO/MainProcess] mingle: all alone
[2016-01-17 18:41:42,302: WARNING/MainProcess] celery@engine ready.
[2016-01-17 18:42:45,778: ERROR/MainProcess] Received unregistered task of type 'vk_wall.tasks.mul'.
The message has been ignored and discarded.
Did you remember to import the module containing this task?
Or maybe you are using relative imports?
Please see http://bit.ly/gLye1c for more information.
The full contents of the message body was:
{'expires': None, 'errbacks': None, 'callbacks': None, 'args': (2, 5), 'kwargs': {}, 'utc': True, 'retries': 0, 'eta': '2016-01-17T15:42:55.746877+00:00', 'task': 'vk_wall.tasks.mul', 'id': '38c3c3d3-3b53-4c58-a308-d41ed24ea613', 'timelimit': (None, None), 'chord': None, 'taskset': None} (302b)
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/celery/worker/consumer.py", line 455, in on_task_received
strategies[name](message, body,
KeyError: 'vk_wall.tasks.mul'
[2016-01-17 18:42:45,786: ERROR/MainProcess] Received unregistered task of type 'vk_wall.tasks.add'.
The message has been ignored and discarded.
Did you remember to import the module containing this task?
Or maybe you are using relative imports?
Please see http://bit.ly/gLye1c for more information.
The full contents of the message body was:
{'expires': None, 'errbacks': None, 'callbacks': None, 'args': (2, 2), 'kwargs': {}, 'utc': True, 'retries': 0, 'eta': None, 'task': 'vk_wall.tasks.add', 'id': 'cc04ddae-024e-4884-9a10-7a7066206fa9', 'timelimit': (None, None), 'chord': None, 'taskset': None} (264b)
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/celery/worker/consumer.py", line 455, in on_task_received
strategies[name](message, body,
KeyError: 'vk_wall.tasks.add'
我看到celerybeat问题，也在回溯中我看到celery可以找到add、mul、get_wallposts_by_owner_id任务，但无法执行它们(在我的views.py中我计算它们:from vk_wall.tasks import add, mul res_mul = mul.apply_async((2, 5), 队列='celery', 倒计时=10) res_add = add.delay(2, 2))
我还安装了 django-celery 来查看管理面板中的任务。
顺便说一句:我能够在初学者教程期间让 celery 工作并执行任务 http://docs.celeryproject.org/en/latest/getting-started/next-steps.html但现在需要 django 来访问任务中的模型。
UPD:我的 settings.py django 文件
BROKER_URL = 'django://'
#: Only add pickle to this list if your broker is secured
#: from unwanted access (see userguide/security.html)
CELERY_ACCEPT_CONTENT = ['json']
CELERY_TASK_RESULT_EXPIRES=3600,
#CELERY_RESULT_BACKEND='amqp',
CELERY_RESULT_BACKEND='djcelery.backends.database:DatabaseBackend',
#CELERY_RESULT_BACKEND='djcelery.backends.cache:CacheBackend',
CELERY_RESULT_SERIALIZER = 'pickle', #json
CELERY_TASK_SERIALIZER = 'pickle',
CELERY_IMPORTS=["vk_wall.tasks"]
UPD2:我的celery.py文件(位于firstapp/firstapp，与django的settings.py同一级别)
from __future__ import absolute_import
import os
from celery import Celery
# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'firstapp.settings')
from django.conf import settings # noqa
app = Celery('firstapp')
# Using a string here means the worker will not have to
# pickle the object when using Windows.
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
@app.task(bind=True)
def debug_task(self):
print('Request: {0!r}'.format(self.request))
UPD3:完整回溯
graph@engine:/var/www/engine$ celery worker -A firstapp.settings -l debug
Traceback (most recent call last):
File "/usr/local/bin/celery", line 11, in <module>
sys.exit(main())
File "/usr
/local/lib/python3.4/dist-packages/celery/__main__.py", line 30, in main
main()
File "/usr/local/lib/python3.4/dist-packages/celery/bin/celery.py", line 81, in main
cmd.execute_from_commandline(argv)
File "/usr/local/lib/python3.4/dist-packages/celery/bin/celery.py", line 770, in execute_from_commandline
super(CeleryCommand, self).execute_from_commandline(argv)))
File "/usr/local/lib/python3.4/dist-packages/celery/bin/base.py", line 309, in execute_from_commandline
argv = self.setup_app_from_commandline(argv)
File "/usr/local/lib/python3.4/dist-packages/celery/bin/base.py", line 469, in setup_app_from_commandline
self.app = self.find_app(app)
File "/usr/local/lib/python3.4/dist-packages/celery/bin/base.py", line 489, in find_app
return find_app(app, symbol_by_name=self.symbol_by_name)
File "/usr/local/lib/python3.4/dist-packages/celery/app/utils.py", line 229, in find_app
sym = symbol_by_name(app, imp=imp)
File "/usr/local/lib/python3.4/dist-packages/celery/bin/base.py", line 492, in symbol_by_name
return symbol_by_name(name, imp=imp)
File "/usr/local/lib/python3.4/dist-packages/kombu/utils/__init__.py", line 96, in symbol_by_name
module = imp(module_name, package=package, **kwargs)
File "/usr/local/lib/python3.4/dist-packages/celery/utils/imports.py", line 101, in import_from_cwd
return imp(module, package=package)
File "/usr/lib/python3.4/importlib/__init__.py", line 109, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
File "<frozen importlib._bootstrap>", line 2224, in _find_and_load_unlocked
ImportError: No module named 'firstapp'
最佳答案
使用命令行中设置的显式路径调用 celery 工作程序:
celery worker -A firstapp.celery
看来根本原因是:
- Celery 连接到默认队列并获取消息
- 此消息包含任务名称
vk_wall.tasks.add - Celery 尝试在已知任务列表中查找此任务，但失败
发生这种情况是因为您没有指定 celery 的设置源。它应该加载 Django 项目的设置或单独的设置文件。
关于python - 使用教程无法使用 Django Celery Kombu，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34840462/