Setting up gunicorn and celery with gevent, psycogreen for Django

gistfile1.py

# gunicorn.conf.py: getting gevent and psycogreen running

bind = '127.0.0.1:1437'
accesslog = "<some-path>/logs/gunicorn-access.log"
errorlog = "<some-path>/logs/gunicorn-error.log"
workers = 5
try:
    # fail 'successfully' if either of these modules aren't installed
    from gevent import monkey
    from psycogreen.gevent import patch_psycopg

    # setting this inside the 'try' ensures that we only 
    # activate the gevent worker pool if we have gevent installed
    worker_class = 'gevent'

    # this ensures forked processes are patched with gevent/gevent-psycopg2
    def do_post_fork(server, worker):
        monkey.patch_all()
        patch_psycopg()

        # you should see this text in your gunicorn logs if it was successful
        worker.log.info("Made Psycopg2 Green")

    post_fork = do_post_fork
except ImportError:
    pass


# in your settings.py, along with the rest of your settings for celery:
CELERYD_POOL = 'gevent'


# if you want gevent and psycogreen to work for management commands, runserver 
# and other things on the command line, add the following to the top of your manage.py 
# like so (based on a 1.4.x Django installation):
try:
    from gevent import monkey
    monkey.patch_all()
except ImportError:
    pass

try:
    from psycogreen.gevent import patch_psycopg
    patch_psycopg()
except ImportError:
    pass

# ... the rest of manage.py is here

i want to only run it for celery so any example where to set post_fork hook

Gunicorn already calls monkey.patch_all() after do_post_fork(). You can instead override post_worker_init(). At that point, the patching would be done, so you could call only patch_psycopg(), and remove the call to monkey.patch_all().