CODEWITHSUNDEEP
python-3.xsslflaskhttpsgunicorn
qazwsxedc
qazwsxedc

Reputation: 193

How can I get SSL for a Flask app run over Gunicorn?

I run a Flask app over Gunicorn on Ubuntu 18.04. Gunicorn runs on Port 80. I have NGINX setup, but it isn't used and is disabled. I was able to successfully setup cert-bot for NGINX, but it doesn't help as NGINX isn't used and it also conflicts with gunicorn on Port 80. Is it possible to get a SSL Certificate specifically for Gunicorn/Flask or something that can work with it? SSL and https is essential for the page.

Upvotes: 3

Views: 10731

Answers (3)

mayowa_osibodu
mayowa_osibodu

Reputation: 109

An alternative approach is to make use of a secure tunnelling service like ngrok. With ngrok, you can easily tunnel from your gunicorn server to a https enabled endpoint they provide. Depending on your purpose, this could be a convenient workaround.

Using ngrok is as simple as (after installing):

gunicorn -b 0.0.0.0:4000
ngrok http 4000

This provides you with a secure endpoint like https://abcd.ngrok.io that you can send requests to, just the way you'd send requests to your gunicorn server.

So http://0.0.0.0:4000/hello becomes https://abcd.ngrok.io/hello

Upvotes: 1

elijusgust
elijusgust

Reputation: 41

You can use certbot generated SSL Certificates with Gunicorn:

  1. Follow certbot instructions for software "Other". Note the location where generated files are saved.
  2. Run Gunicorn and specify certificate and key paths using --keyfile and --certfile options. Example: gunicorn --keyfile /some/path/key.pem --certfile /some/path/cert.pem main:app

Upvotes: 4

Jürgen Gmach
Jürgen Gmach

Reputation: 6093

I'd recommend to change the port for Gunicorn to something else, or even bind it to a socket.

Then you can use Nginx to handle SSL.

Gunicorn offers extensive documentation:

https://docs.gunicorn.org/en/stable/index.html

Update

DigitalOcean always offers extremely good tutorials:

https://www.digitalocean.com/community/tutorials/how-to-serve-flask-applications-with-gunicorn-and-nginx-on-ubuntu-18-04

Upvotes: -3

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