Volume expansion was introduced in v1.8 as an Alpha feature, and versions prior to v1.11 required enabling the feature gate, ExpandPersistentVolumes, as well as the admission controller, PersistentVolumeClaimResize (which prevents expansion of PVCs whose underlying storage provider does not support resizing). Shrinking persistent volumes is not supported. Users no longer have to manually interact with the storage backend or delete and recreate PV and PVC objects to increase the size of a volume. This feature allows users to easily resize an existing volume by editing the PersistentVolumeClaim (PVC) object. In Kubernetes v1.11 the persistent volume expansion feature is being promoted to beta. Editor’s note: this post is part of a series of in-depth articles on what’s new in Kubernetes 1.11
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