AllowVolumeExpansion

• https://kubernetes.io/docs/concepts/storage/storage-classes/#allow-volume-expansion
• https://kubernetes.io/blog/2018/07/12/resizing-persistent-volumes-using-kubernetes/

gcePersistentDisk (Kubernetes.io/gce-pd)	1.11 (Jun 2018)

kubectl patch pvc elasticsearch-master-elasticsearch-master-0 -p '{"spec":{"resources":{"requests":{"storage":"35Gi"}}}}'
persistentvolumeclaim/elasticsearch-master-elasticsearch-master-0 patched

kubectl describe sc standard | grep AllowVolumeExpansion
AllowVolumeExpansion:  True

Minikube

kubectl describe sc standard | grep AllowVolumeExpansion
AllowVolumeExpansion:  <unset>

kubectl get storageclass
NAME                 PROVISIONER                RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
csi-hostpath-sc      hostpath.csi.k8s.io        Delete          Immediate           false                  5m27s
standard (default)   k8s.io/minikube-hostpath   Delete          Immediate           false                  25h

kubectl get storageclass
NAME                 PROVISIONER            RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
standard (default)   kubernetes.io/gce-pd   Delete          Immediate           false                  3y220d

NAME                 PROVISIONER             RECLAIMPOLICY   VOLUMEBINDINGMODE      ALLOWVOLUMEEXPANSION   AGE
standard (default)   kubernetes.io/gce-pd    Delete          Immediate              true                   461d

https://kubernetes.io/blog/2018/07/12/resizing-persistent-volumes-using-kubernetes/

ExpandInUsePersistentVolumes. It is supported by the in-tree volume plugins GCE-PD, AWS-EBS, Cinder, and Ceph RB

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: standard
parameters:
  type: pd-standard
provisioner: kubernetes.io/gce-pd
allowVolumeExpansion: true
reclaimPolicy: Delete

Related

• Kubernetes Volume Expansion
• ExpandInUsePersistentVolumes
• CSI Volume Cloning

Activities

• Kubernetes PVC resize: kubectl patch
• Read https://kubernetes.io/blog/2018/07/12/resizing-persistent-volumes-using-kubernetes/

See also

• 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