How can I access my Gunicorn served Flask app from the web?

Question

Regarding the following documentation:

Gunicorn¶ Gunicorn ‘Green Unicorn’ is a WSGI HTTP Server for UNIX. It’s a pre-fork worker model ported from Ruby’s Unicorn project. It supports both eventlet and greenlet. Running a Flask application on this server is quite simple: gunicorn myproject:app Gunicorn provides many command-line options – see gunicorn -h. For example, to run a Flask application with 4 worker processes (-w 4) binding to localhost port 4000 (-b 127.0.0.1:4000): gunicorn -w 4 -b 127.0.0.1:4000 myproject:app

This is all and well, however, the documentation does not say how to configure port 4000 to be accessible from the web.

I want to be able to handshake something like the following,

www.mysite.com:4000

And get back a response. My app works fine on Flask’s development server and Gunicorn locally. I just can’t figure out how to configure it to work on my cloud instance so I can make posts and gets.

Make sure you the firewall allows traffic through 4000. – Amged Rustom Oct 10 '18 at 09:22 — Amged Rustom, Oct 10 '18 at 09:22

Daniel Roseman · Accepted Answer · 2018-10-10T08:53:22.280

3

You are not supposed to make gunicorn available over the web. Instead you are supposed to use it with a reverse proxy, such as nginx.

The gunicorn docs have a full example of configuring nginx to reverse proxy to your gunicorn process.

edited Oct 10 '18 at 08:53

answered Oct 10 '18 at 08:50

Daniel Roseman

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Thanks. Will investigate. New to this. – reka18 Oct 10 '18 at 08:51

How can I access my Gunicorn served Flask app from the web?

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