Question about HA, etcd, and Kine

All about k0s k0smotron
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#1

I created an issue with a question. Maybe this forum post will be noticed faster:

I want to create an HA k0smotron setup, particularly the storage and the API Server. To achieve an HA API Server I need to have at least 3 replicas of the k0smotron control plane, so:

apiVersion: k0smotron.io/v1beta1
kind: Cluster
metadata:
  name: k0smotron-test
spec:
  replicas: 3

I see the etcd configuration ( docs k0smotron io/head/etcd/#customizing-etcd-configuration ) that suggests it’s possible to achieve storage HA with the etcd without any custom Kine setup. On the other hand, I see that the Kine setup is required for replicas > 1 ( docs k0smotron io/head/resource-reference/?h=cluster#k0smotroncontrolplanespec ). I’m confused. I’ve also seen a blog post that suggests it’s possible to achieve HA just with etcd. Could you elaborate on the possibilities for HA API Server and HA storage?