100% uptime is really not feasible so forget that. Even the commercial servers have downtimes.

What I was thinking of doing was having 2-3 separate boxes distributed between houses and could automatically switch which boxes handles resources when 1 goes down. No individual box would have 100% uptime, but you’d have minimal disruptions when any particular box has issues or needs maintenance.

Unfortunately, it doesn’t seem like kubernetes works that way, and I don’t know of any software that would. Best bet now is probably to distribute backups between the boxes and manually spin up a secondary box when the primary goes down