3 years ago

Category: Database, Data, Kubernetes, nginx, artificial-intelligence

This is the last part of the tutorial in the K3s series. The control plane of the Kubernetes cluster is mostly stateless. The only stateful component of the control plane is the etcd database, which acts as the single source of truth for the entire cluster.

Each control plane node creates a local etcd member and this etcd member communicates only with the kube-apiserver of this node.

A minimum of three hosts for control plane nodes and three hosts for etcd nodes are required for an HA cluster with this topology.