Kubernetes storage

https://kubernetes.io/docs/concepts/storage/

• Container Storage Interface (CSI)
  • Amazon EBS CSI driver
  • Google Compute Engine Persistent Disk CSI Driver
  • CSI Volume Cloning

• Kubernetes Persistent Volumes (PV), Kubernetes Persistent volumes
• Kubernetes Persistent Volume Claim (PVC)
• Kubernetes Volume Expansion
• Projected volumes

• snapshots
• Cross namespace data sources (alpha)

Commands

kubectl describe storageclass
kubectl describe pvc

kubectl get pvc
kubectl get storageclass

kind: PersistentVolume
kind: PersistentVolumeClaim
kind: StorageClass

Errors

error: persistentvolumeclaims "your-elasticsearch-master-0" could not be patched: persistentvolumeclaims "your-elasticsearch-master-0" is forbidden: only dynamically provisioned pvc can be resized and the storageclass that provisions the pvc must support resize.

FailedMount
FailedScheduling

didn't find available persistent volumes to bind

Types

• gcePersistentDisk
• Cinder (OpenStack)
• glusterfs
• rbd - Ceph RBD
• Azure File
• Azure Disk
• Portworx
• FlexVolumes
• Container Storage Interface (CSI)

News

• Dec 2023 (v1.29) Volume expansion using Secrets supported for CSI drivers
• v1.28 Automatic, retroactive assignment of a default StorageClass graduate to stable

Activities

• Kubernetes PVC resize: kubectl patch
• Create a new volume using: kind: PersistentVolumeClaim
• Kubernetes: Rename PVs
• Access a volume with a temporary pod

Related

• EKS storage
• CKA Kubernetes storage
• PersistentVolume deletion protection finalizer
• kubernetes.io/gce-pd
• kubernetes.io/aws-ebs
• ExtraVolumes
• parameters
• storage-provisioner

See also

• Kubernetes Persistent Volume Claim (PVC) (kind: PersistentVolumeClaim), Kubernetes Persistent volumes (PV) (kind: PersistentVolume), kubectl describe pvc, kubectl get pvc, ClaimLost, ProvisioningSucceeded, PV access control
• EKS storage, Amazon EBS CSI driver, Amazon EFS CSI driver, kubectl describe storageclass
• Kubernetes storage, storage classes, PersistentVolume (PV), PVC, CSI, kind: StorageClass, kind: PersistentVolumeClaim, kind: PersistentVolume, kubectl [ get | describe | edit ] pvc, volumeClaimTemplates:, kubectl patch pv, FailedMount, Volume Expansion, Volume Cloning, snapshots, ExtraVolumes, NotTriggerScaleUp, volumePVCDataSource, AllowVolumeExpansion, EKS storage, provisioner, Storage Capacity Tracking, VolumeBinding, VolumeClaimTemplate, storage.k8s.io, CKA Storage, DoKC, EmptyDir, Volume populators