kube-single-age/clusters/base/infra/longhorn/storage-classes/longhorn-single-replica.yaml

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: longhorn-single-replica
  annotations:
    storageclass.kubernetes.io/is-default-class: "false"
provisioner: driver.longhorn.io
reclaimPolicy: Retain
allowVolumeExpansion: true
parameters:
  numberOfReplicas: "1"
  staleReplicaTimeout: "30"