title: django.db.utils.OperationalError: (2003, "Can't connect to MySQL server on '127.0.0.1' (111)"
body: <p>I've installed NGINX, GUNICORN and my project properly on Ubuntu server, 
  but when I run the project using
  <code>python manage.py runserver</code>, I get the following error; </p>
  
  <blockquote>
    <p>django.db.utils.OperationalError: (2003, "Can't connect to MySQL server on '127.0.0.1' (111)"</p>
  </blockquote>
  
  <p>Before, installing gunicorn, my site was running properly at my_public_ip_address:8000</p>