Storage Classes and Dynamic Provisioning

StorageClasses define different types of storage (e.g., SSDs, HDDs, networked storage) and allow for dynamic volume provisioning in Kubernetes.

Why Use StorageClasses?

• Automates PV creation
• Supports various backends like AWS EBS, GCE PD, NFS, etc.
• Enables setting policies like reclaim policy, mount options

Example:

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: fast
provisioner: kubernetes.io/aws-ebs
parameters:
  type: gp2
  fsType: ext4

Linking PVC to StorageClass:

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: fast-pvc
spec:
  storageClassName: fast
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 5Gi

StorageClasses make it easy to scale and manage storage across environments and infrastructure providers.