Gunicorn configuration example.

gunicorn_conf.py

# Use this configuration with:
# cd /svr/flask
# ENV/bin/gunicorn -c gunicorn_conf.py manage:app

import multiprocessing


# http://docs.gunicorn.org/en/latest/configure.html#bind
#
bind = '127.0.0.1:8000'

# By preloading an application you can save some RAM resources as well
# as speed up server boot times.
# Although, if you defer application loading to each worker process, you
# can reload your application code easily by restarting workers.
#
# http://docs.gunicorn.org/en/latest/configure.html#preload-app
#
preload_app = False

# A positive integer generally in the 2-4 x $(NUM_CORES) range.
# You'll want to vary this a bit to find the best for your particular
# application's work load.
#
# http://docs.gunicorn.org/en/latest/configure.html#workers
#
workers = multiprocessing.cpu_count() * 2 + 1

nginx.conf

# To add the this configuration to the Nginx server:
#
# > ln -s /srv/flask/nginx.conf /etc/nginx/conf.d/my_site.conf
# > sudo service nginx -s reload
#
# You will need to reload Nginx each time you make changes to the
# configuration file.
#
server {
	listen 80;

	server_name _;
	#server_name flask.example.com;

	#access_log /var/log/nginx/access.log;
	#error_log /var/log/nginx/error.log;

	# Nginx is better at serving static files.
	location /static/ {
		alias /srv/flask/static/;
	}

	location / {
		# This should match the IP and port that Gunicorn is running on
		proxy_pass http://127.0.0.1:8000/;

		proxy_redirect off;
		proxy_set_header Host $host;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
	}
}