How to debug gunicorn failure issues? (Worker failed to boot)

Question

I have a Django web application that uses Gunicorn and runs good locally, but when I deploy app on EC2, I see that Gunicorn is failing:

 $ gunicorn_django -b         


        

Answer 1

You need --debug --log-level debug

Answer 2

In my case I had to run gunicorn_django --bind example.com:8001 from the same folder as my manage.py file.

Answer 3

Try running with --preload as an argument to gunicorn_django - it should show you the error the workers are having when starting. See this bug