Thanks for sharing your project (as well as Hetzner cloud which are indeed great). Our target was to use official (vanilla) k8s, the official installer (kubeadm) and the official helm charts for all things we deploy. While it would also work on a Raspberry Pi, indeed k3s would be more appropriate. We wanted to have something with the same functionality and HA, and tools like in a cloud k8s: GKE/EKS - but for people that like to own it, and use on-prem (or something like your cloud).