I was planning on downloading the controller software, but see the Linux version is for Debian, etc. only.  Does anyone know if this can be installed on openSUSE?

There actually is another one but it's not listed on the website. All you need to do is to replace the deb file in the link with UniFi.unix.zip

https://dl.ui.com/unifi/6.0.36/UniFi.unix.zip

Jonas