I used to run a cluster with an old ASUS laptop and an old intel mac, with an rpi as qdevice. It was actually fun, but my network was not up the task, so I scaled down my HA setup to a single node some time ago. Now I just run a VM for various docker containers and a couple of LXCs for Pi-hole and Tailscale, no external access except through my tailscale node which gives me acces to the local subnet when on the road. I rarely have to look at it anymore, except for some periodic updates, it just works.