Kubernetes Storage Concepts
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Internal
Overview
Kubernetes has a mature and feature-rich subsystem called the persistent volume subsystem. The persistent storage subsystem supports, among others iSCSI, SMB, NFS, object storage blobs, etc. Regardless of where it comes from, storage is exposed to the Kubernetes cluster in the form of a volume.
Container Storage Interface (CSI)
Storage Plugin
Provisioner.
API Resources
PersistentVolume (PV)
PersistentVolumeClaim (PVC)
StorageClass (SC)
Volume
Secrets may be exposed as files in dedicated volumes mounted in the pod.
Volume Type
- hostPath
- configMap
Dynamic Volume Provisioning
Dynamic volume provisioner https://kubernetes.io/docs/concepts/storage/dynamic-provisioning/