Minecraft can read a special DNS record type called SRV records. You can create a record like that to point Minecraft to a port that the server is running on. It doesn’t even have to have the same ip as the webserver.

This is for Namecheap, but the general principle applies everywhere: https://www.namecheap.com/support/knowledgebase/article.aspx/9765/2208/how-can-i-link-my-domain-name-to-a-minecraft-server/

To be fair, Fedora switching to something as default isn’t a good sign that you should start using it. I do agree, though, btrfs has come far enough to be a default choice for most people.

If you’re willing to go the extra mile for OpenStack, I suggest you check out OKD and its virtualization operator. It’s much easier to install and maintain, too

Are you talking about 2FA login for your own user account or U2F/PIV/WebAuthn in your browser? The latter seems to work out of the box on any non-snap or flatpak browser, but the former needs a bit more setup as that is not a standard feature in Ubuntu yet. I recommend using ykman and yubico-piv-tool for configuring yubikeys in linux, but Yubico also provides a GUI application on their website

It’s more likely that your vendor doesn’t push updates for your mobo to LVFS