02_persistent_volume.yaml

# create persistent volume for database
apiVersion: v1
kind: PersistentVolume
metadata:
  name: yt-notifier-pv
  namespace: yt-notifier-namespace
spec:
  capacity:
    storage: 128Mi
  volumeMode: Filesystem
  accessModes:
  - ReadWriteOnce
  persistentVolumeReclaimPolicy: Delete
  storageClassName: local-path
  local:
    path: /path/to/database/on/host/machine
  nodeAffinity:
    required:
      nodeSelectorTerms:
        - matchExpressions:
            - key: kubernetes.io/hostname
              operator: In
              values:
                - my-k8s-node  # get value from kubectl get nodes