@mreisbeck

There’s really not an OS-specific guide. How you go about setting up an SSL Certificate depends on your choice of web server (i.e. Apache, NGINX, …).

Many of the guides simply choose Ubuntu instead of X, Y, Z OS as it’s a popular choice and provides LTS releases (Long-Term Support). The OS, however, has nothing to do, overall, with how you’d setup an SSL Certificate as you can place the CRT/PEM files pretty much anywhere and link to them using a defined configuration specific to the web server.

The guide below covers the basics for Apache and NGINX:

https://www.digitalocean.com/community/tutorials/how-to-install-an-ssl-certificate-from-a-commercial-certificate-authority