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Storage Class

  • Define tiers/classes of storage
  • Enable Dynamic Provisioning
  • Define infrastructure specific parameters
  • Reclaim Policy

Dynamic Provisioning Workflow​

  • Create a StorageClass - define the type of storage and reclaim policiy (optionnal)
  • Create a PersistentVolumeClaim - pointing to the StorageClass
  • Define Volume in Pod Spec - define a PersistentVolumeClaim pointing that PVC that we just created.
    • When the Pods start up, the PV is dynamically allocated

Define StorageClass in Azure​

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
    name: managed-premium
parameters:
#Specific to our storage provisioner
    kind: Managed
    storageaccounttype: Premium_LRS
provisioner: kubernetes.io/azure-disk

Is this example no persistentVolumeClaimPolicy is defined. The default value is "delete", when I delete the PVC the underlying PV will be deleted.

Dynamic Provisioning​

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
    name: pvc-azure-managed
spec:
    accessModes:
    - ReadWriteOnce
    storageClassName: managed-premium
    resources:
        requests:
            storage: 10Gi