How do I give GPIO and USB permissions to a k3s Kubernetes pod?

Question

I am trying to run Home Assistant from my Raspberry Pi 4 using K3s Kubernetes. I can get it up and running but now I want to give it access to my GPIO. What is the proper way to give those permissions to the pod running the application?

Answer 1

this works by giving the container full privileges

If you have the usb on a dedicated Raspberry Pi you have to label this node first via

kubectl label nodes <node-name> device=myraspi

and then use a node selector to assure that this pod runs on the Pi A Pod definition would look like this

apiVersion: v1
kind: Pod
metadata:
  labels:
  name: home-assistant
spec:
  nodeSelector:
    device: myraspi
  containers:
    - image: <image-name>
      imagePullPolicy: Always
      name: led-blue
      securityContext:
        privileged: true