Deploy Flask app with nginx using gunicorn and supervisor

  • Install required packages
    sudo apt-get install nginx supervisor python-pip python-virtualenv
  • Create virtual environment
    virtualenv .env
    activate .env/bin/activate
  • Create Flask app
    from flask import Flask

    app = Flask(__name__)

    @app.route('/')
    def index():
        return 'hello world'

    if __name__ == '__main__':
        app.run(debug=True)
  • Run the app
    python app.py
  • Setup gunicorn
    pip install gunicorn
    gunicorn app:app -b localhost:8000 &
  • Create supervisor file in /etc/supervisor/conf.d/hello_world.conf
[program:hello_world]
directory=/home/hello_world
command=/home/.env/bin/gunicorn app:app -b localhost:8000
autostart=true
autorestart=true
stderr_logfile=/var/log/hello_world/hello_world.err.log
stdout_logfile=/var/log/hello_world/hello_world.out.log
  • Enable the configuration
    sudo supervisorctl reread
    sudo service supervisor restart
  • Check the status
sudo supervisorctl status
  • Setup nginx
sudo vim /etc/nginx/conf.d/virtual.conf

    server {
        listen 80;
        server_name domain_name;

        location / {
    	proxy_pass http://127.0.0.1:8000;
        }
    }
  • restart the service
    sudo nginx -t
    sudo service nginx restart