Storage subsystem

This subsection describes the architecture of the Storage subsystem of Deckhouse Kubernetes Platform (DKP).

The Storage subsystem includes the following modules:

• local-path-provisioner: Provides the local storage on Kubernetes nodes using HostPath volumes and creates StorageClass resources to manage the allocation of local storage.
• snapshot-controller: Enables snapshot support for compatible CSI-drivers in the Kubernetes cluster.
• sds-local-volume: Manages the local block storage based on LVM and enables creating StorageClass resources in Kubernetes using the LocalStorageClass resource.
• sds-node-configurator: Manages block devices and LVM on Kubernetes cluster nodes through Kubernetes custom resources.
• sds-replicated-volume: Manages replicated block storage based on DRBD. LINSTOR is used as a control plane.
• storage-volume-data-manager: Provides secure export and import of persistent volume contents over HTTP protocol.

• Modules that provide a CSI driver implementation for integration with various types of storage (software and hardware):

  • csi-ceph
  • csi-hpe
  • csi-huawei
  • csi-netapp
  • csi-nfs
  • csi-s3
  • csi-scsi-generic
  • csi-vsphere
  • csi-yadro-tatlin-unified