I’ve been thinking about this lately as i was intending to build a 3 node cluster with proxmox. I still need to understand what happens when one node fails and how tbe othes handle exposing services. If the ip changes, bookmarks wont work. So i thought an inter al domain would be the sol ution?

What really helps with such decisions is your use model and threat model. Then a nice matrix that compares them all. Haven’t come across a good updated comparison in a while. Would be good to see a shared link here.