First you need to install supervisor.
sudo apt-get install supervisor
Then you'll need to create the config file:
sudo nano /etc/supervisor/conf.d/celery.conf
And copy these settings:
[program:celery]
directory = /home/YOUR_PROJECT/
command = /home/YOUR_PROJECT/venv/bin/celery -A config worker --loglevel=info
autostart = true
venv is the virtual environment where you have installed Celery.
And now you will be able to start/restart/stop celery.
supervisorctl reload
supervisorctl start/restart/stop celery