Debugging tools and tricks¶
Celery logging level¶
Launch celery in INFO log level:
$ bin/pcelery worker parts/instance/etc/zope.conf -l info
Debugging in Celery tasks¶
PDB cannot be used in Celery (it would raise a BdbQuit exception and die).
We can use rdb instead:
from celery.contrib import rdb rdb.set_trace()
It will stop the task execution with a message like:
[2015-03-04 11:16:11,951: WARNING/Worker-2] Remote Debugger:6901: Please telnet into 127.0.0.1 6901. Type `exit` in session to continue. Remote Debugger:6901: Waiting for client...
We have to open a telnet session on the mentionned port to access the debugger:
$ telnet localhost 6901