Kronos makes it really easy to schedule tasks with cron.
$ pip install django-kronos
... and add kronos
to INSTALLED_APPS
.
Kronos collects tasks from cron
modules in your project root and each of your applications:
# app/cron.py
import kronos
import random
@kronos.register('0 0 * * *')
def complain():
complaints = [
"I forgot to migrate our applications's cron jobs to our new server! Darn!",
"I'm out of complaints! Damnit!"
]
print random.choice(complaints)
$ python manage.py runtask complain
I forgot to migrate our applications's cron jobs to our new server! Darn!
List all registered tasks ^^^^^^^^^^^^^^^^^^
$ python manage.py showtasks
* List of tasks registered in Kronos *
>> my_task_one
>> my_task_two
$ python manage.py installtasks
Installed 1 task.
You can review the crontab with a crontab -l
command:
$ crontab -l
0 0 * * * /usr/bin/python /path/to/manage.py runtask complain --settings=myprpoject.settings
Usually this line will work pretty well for you, but there can be some rare cases when it requires modification. You can achieve it with a number of settings variables used by kronos:
- KRONOS_PYTHON
Python interpreter to build a crontab line (defaults to the interpreter you used to invoke the management command).
- KRONOS_MANAGE
Management command to build a crontab line (defaults to
manage.py
in the current working directory).- KRONOS_PYTHONPATH
Extra path which will be added as a
--pythonpath
option to the management command.- KRONOS_POSTFIX
Extra string added at the end of the command. For dirty thinks like '> /dev/null 2>&1'
Define these variables in your settings.py
file if you wish to alter crontab lines.
- Fork the repository.
- Do your thing.
- Open a pull request.
- Receive cake.
Johannes Gorset made this. You should tweet me if you can't get it to work. In fact, you should tweet me anyway.