How to run celery on windows?

Question

How to run celery worker on Windows without creating Windows Service? Is there any analogy to $ celery -A your_application worker?

Answer 1

Celery 4.0+ does not officially support window already. But it still works on window for some development/test purpose.

Use eventlet instead as below:

pip install eventlet celery -A <module> worker -l info -P eventlet 

It works for me on window 10 + celery 4.1 + python 3.

This solution solved the following exception:

[2017-11-16 21:19:46,938: ERROR/MainProcess] Task handler raised error: ValueError('need more than 0 values to unpack',) Traceback (most recent call last):   File "c:\users\wchen8\work\venv\weinsta\lib\site-packages\billiard\pool.py", line 358, in workloop     result = (True, prepare_result(fun(*args, **kwargs)))   File "c:\users\wchen8\work\venv\weinsta\lib\site-packages\celery\app\trace.py", line 525, in _fast_trace_task     tasks, accept, hostname = _loc ValueError: need more than 0 values to unpack 

===== update 2018-11 =====

Eventlet has an issue on subprocess.CalledProcessError:

https://github.com/celery/celery/issues/4063

https://github.com/eventlet/eventlet/issues/357

https://github.com/eventlet/eventlet/issues/413

So try gevent instead.

pip install gevent celery -A <module> worker -l info -P gevent 

This works for me on window 10 + celery 4.2 + python 3.6

Answer 2

yes:

celery -A your_application -l info 

also note Celery have dropped support for Windows(since v4), so best to

pip install celery==3.1.25 

3.1.25 was the last version that works on windows(just tested on my win10 machine). Didn't need to downgrade flower(browser monitor for celery) though.

See also the FAQ for Windows