Kubernetes Storage Concepts: Difference between revisions
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Kubernetes has a mature and feature-rich subsystem called the '''<span id='Persistent_Volume_Subsystem'></span>persistent volume subsystem'''. Regardless of where it comes from, storage is exposed to the Kubernetes cluster in the form of a [[#Volume|volume]]. | Kubernetes has a mature and feature-rich subsystem called the '''<span id='Persistent_Volume_Subsystem'></span>persistent volume subsystem'''. Regardless of where it comes from, storage is exposed to the Kubernetes cluster in the form of a [[#Volume|volume]]. | ||
=Storage | =Storage Providers= | ||
Kubernetes [[#Persistent_Volume_Subsystem|persistent volume subsystem]] supports, among others, iSCSI, SMB, NFS, [[Storage_Concepts#Object_Storage|object storage blobs]], Amazon [[Amazon Elastic Block Store|Elastic Block Store]] [[Amazon_Elastic_Block_Store_Concepts#Block_Device|block devices]], Azure File resources, etc. | Kubernetes [[#Persistent_Volume_Subsystem|persistent volume subsystem]] supports, among others, iSCSI, SMB, NFS, [[Storage_Concepts#Object_Storage|object storage blobs]], Amazon [[Amazon Elastic Block Store|Elastic Block Store]] [[Amazon_Elastic_Block_Store_Concepts#Block_Device|block devices]], Azure File resources, etc. | ||
Revision as of 00:52, 10 December 2019
Internal
Overview
Kubernetes has a mature and feature-rich subsystem called the persistent volume subsystem. Regardless of where it comes from, storage is exposed to the Kubernetes cluster in the form of a volume.
Storage Providers
Kubernetes persistent volume subsystem supports, among others, iSCSI, SMB, NFS, object storage blobs, Amazon Elastic Block Store block devices, Azure File resources, etc.
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/