all-the-pi-at-right-temp.md

stern -n kube-system -l k8s-app=pi-temperature -s 10m

daemonset-temperature.yaml

apiVersion: apps/v1
kind: DaemonSet
metadata:
  labels:
    k8s-app: pi-temperature
  name: pi-temperature
  namespace: kube-system
spec:
  selector:
    matchLabels:
      k8s-app: pi-temperature
  template:
    metadata:
      labels:
        k8s-app: pi-temperature
    spec:
      containers:
      - image: busybox
        name: temp
        command:
        - sh
        - -ec
        - |
          while :; do
            echo "$(cat /etc/node/etc/hostname): $(cat /etc/node/thermal_zone0/temp)"
            sleep 60
          done
        volumeMounts:
        - name: thermalzone
          mountPath: /etc/node/thermal_zone0/
        - name: node-etc
          mountPath: /etc/node/etc/
      volumes:
      - name: thermalzone
        hostPath:
          path: /sys/class/thermal/thermal_zone0/
      - name: node-etc
        hostPath:
          path: /etc