Question Flask app on port 80

[rayder99]

Server operating system version

Ubuntu 20.04.6

Plesk version and microupdate number

Obsidian 18.0.61

Hello Everybody,

I followed this manual to create a flask app and run it in Plesk Obsidian:
Input - Guide for Python Flask App deployement

But my problem is, that this app only runs on port 5000, or whichever i define in the parameters.
It does not run on port 80, so the standard port for http traffic - I get this message:
"Port 80 is in use by another program. Either identify and stop that program, or start the server with a different port."

How can i change the default port, that traffic for port 80 will be redirected to 5000? - or whichever port I choose
And as Step 2: how can i make the https traffic as well to go to my flask app?

Many thanks in advance

 

[Kaspar@Plesk]

That where proxying request comes into play. You can run Flask (or any other application) on a different port (example 5000) and proxy all requests made to a domain on port 80 (and 443 for https) to 5000.

Simply by disabling proxy mode in Plesk and adding this Ngnix directive to the additional directives of the domain. You can adapt the directive for your specific needs and configuration.

<Location />
ProxyPass http://127.0.0.1:5000
ProxyPassReverse http://127.0.0.1:5000
</Location>