Try our module cron for manual start cron from odoo interface.

Since version 7.0, the cron workers are launched automatically when you start openerp in multi-process mode.

It spawn n HTTP workers where n is a number in the configuration key workers, and it spawn m Cron workers where m is a number in the configuration key max_cron_threads.

I just run into this same problem running an instance with uwsgi (not gunicorn). The instance was running fine for more than a month, but no cron jobs were running.
The reason behind this unexpected behavior was pretty simple. The cron jobs are never started running only a simple wsgi application.

I've followed the code base as much as I could, and the only places where cron jobs are started are when openerp is started from the command line. Thus cron is never started for wsgi apps.
For this reason, you have 2 possibilities:

1. run a separate openerp-server instance that is initialised, and will only consume your cron job
2. add the cron init code to your wsgi initialisation

I've tried the latter. My current setup seems to work well, but I'm not sure if it's really OK or not. Here follows what I did:

1. Add an `import cron` line towards the top of openerp/service/wsgi_server.py.
2. Add `cron.start_service()` around line 413, after the `openerp.service.start_internal()` call.
3. Restart your server

--------------

NB: finally my solution is to drop gunicorn from the stack, and use the openerp-server command with workers and max-cron-threads set as suggested above

Hi my Friend, there is an app to start cron workers manually espacially for cases where users run their instances in wsgy mode.

You can also assign a automated action to the function of this module.

https://www.odoo.com/apps/modules/8.0/manual_cron/

Best Regards Eugen

Thank you for the answer.

I run gunicorn with the following command: "gunicorn openerp:wsgi.wsgi_server.application -c ../gunicorn.conf.py"

Here is my guniconf.conf.py file:

import openerp 
import multiprocessing 
bind = '0.0.0.0:8000' 
pidfile = '.gunicorn.pid'   
conf = openerp.tools.config

conf['addons_path'] =  "openerp/addons,../addons,../web/addons,../custom-addons"
conf['db_host'] = False 
conf['db_port'] = 5433 
conf['db_user'] = 'user1' 
conf['db_password'] = 'xx' 
conf['dbfilter'] = 'test.*'

conf['logfile'] = '/var/log/openerp-server-7.log'

workers = multiprocessing.cpu_count() * 2 + 1

When I look into the source in method "application" of wsgi_server.py I cannot see where the cron jobs will be started. There are only 2 files which handle "max_cron_threads": "server/openerp/service/workers.py" and "server/openerp/service/cron.py". Both of them are not called in gunicorn-mode.

Maybe I misunderstand something. How to I correctly run openerp in multiprocess-mode?