Kubernetes PVC expansion: kubectl patch pvc

1) List your PVCs:

kubectl get pvc -A

NAMESPACE    NAME                                          STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
dev          elasticsearch-master-elasticsearch-master-0   Bound    pvc-25c6e973-8fc4-463b-9288-123456678903   30Gi       RWO            standard       2y234d

2) Review your StorageClass has AllowVolumeExpansion configured to true.

kubectl describe sc standard | grep AllowVolumeExpansion
AllowVolumeExpansion:  True

3) Request new size

• kubectl -n your-namespace patch pvc your-pvc-name -p '{"spec":{"resources":{"requests":{"storage":"16Gi"}}}}'

4) Verify it

Example

NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE myname1 ebs.csi.aws.com Delete WaitForFirstConsumer true 35d mynam2 efs.csi.aws.com Delete Immediate true 34d myname3 efs.csi.aws.com Delete Immediate true 34d myname4 efs.csi.aws.com Delete Immediate true 33d gp2 kubernetes.io/aws-ebs Delete WaitForFirstConsumer false 179d

Related

• kubectl patch pvc
• FileSystemResizeSuccessful MountVolume.NodeExpandVolume succeeded for volume "pvc-678509b5-158b-11e9-8abc-1234567890"
• The PersistentVolumeClaim XXX is invalid

Activities

• Read https://www.gooksu.com/2022/08/how-to-increase-space-for-your-elasticsearch-instances-in-k8s-on-eck/
• Read https://www.percona.com/blog/percona-operator-volume-expansion-without-downtime/

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
• 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, storageclass.kubernetes.io