To design a Home Assistant (Hass.io) setup on K3S (Lightweight Kubernetes), I’ll walk you through a typical setup architecture and key considerations. Here’s an overview of what the system might look like, followed by a detailed breakdown of each component:

Overview of Design

1. K3S Cluster

   • **Master Node and Workers **: Central control plane that runs the API server, etcd (key-value store), scheduler, and controller manager.

2. Home Assistant (Hass.io)

   • Containerized Deployment: Home Assistant is deployed as a container inside the K3S cluster, taking advantage of Kubernetes’ resource management and scaling.

3. Persistent Storage (for Home Assistant and Add-ons)

   • Use Persistent Volumes (PV) and Persistent Volume Claims (PVC) to ensure that important data such as Home Assistant configurations, logs, and database data are stored persistently and survive pod restarts.

4. Add-ons containers

   • MQTT Broker (e.g., Mosquitto) for IoT
   • cloudflared as container connected to traefik ingress controler

5. Automation & Backup:

   • Use CronJobs to backup hassio PVC that content config directory

Step-by-Step Design Process

1. K3S Setup

• Install K3S on your master node:

  curl -sfL https://get.k3s.io | sh -
  

2. Helm