$ oc get co storage
OKD is capable of provisioning persistent volumes (PVs) by using the Container Storage Interface (CSI) driver for Microsoft Azure File Storage.
Azure File CSI Driver Operator is a Technology Preview feature only. Technology Preview features are not supported with Red Hat production service level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them in production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.
For more information about the support scope of Red Hat Technology Preview features, see Technology Preview Features Support Scope.
Familiarity with persistent storage and configuring CSI volumes is recommended when working with a CSI Operator and driver.
To create CSI-provisioned PVs that mount to Azure File storage assets with this feature enabled, OKD installs the Azure File CSI Driver Operator and the Azure File CSI driver by default in the
The Azure File CSI Driver Operator, after being enabled, provides a storage class that is named
azurefile-csi that you can use to create persistent volume claims (PVCs). The Azure File CSI Driver Operator supports dynamic volume provisioning by allowing storage volumes to be created on-demand, eliminating the need for cluster administrators to pre-provision storage.
The Azure File CSI driver enables you to create and mount Azure File PVs.
Storage vendors have traditionally provided storage drivers as part of Kubernetes. With the implementation of the Container Storage Interface (CSI), third-party providers can instead deliver storage plugins using a standard interface without ever having to change the core Kubernetes code.
CSI Operators give OKD users storage options, such as volume snapshots, that are not possible with in-tree volume plugins.
To enable the Azure File Container Storage Interface (CSI) driver operator, you must enable feature gates with the
TechPreviewNoUpgrade feature set.
Enable feature gates with the
TechPreviewNoUpgrade feature set (see Nodes → Enabling features using feature gates).
After turning Technology Preview features on by using feature gates, they cannot be turned off and cluster upgrades are prevented.
Verify the cluster operator storage:
$ oc get co storage
NAME VERSION AVAILABLE PROGRESSING DEGRADED SINCE storage 4.10.0-0.nightly-2021-11-15-034648 True False False 4m36s
AVAILABLE should be "True".
PROGRESSING should be "False".
DEGRADED should be "False".
Verify the status of the pods in the
openshift-cluster-csi-drivers namespace to ensure that they are running:
$ oc get pod -n openshift-cluster-csi-drivers
NAME READY STATUS RESTARTS AGE azure-file-csi-driver-controller-5949bf45fd-pm4qb 11/11 Running 0 39m azure-file-csi-driver-node-2tcxr 3/3 Running 0 53m azure-file-csi-driver-node-2xjzm 3/3 Running 0 53m azure-file-csi-driver-node-6wrgk 3/3 Running 0 53m azure-file-csi-driver-node-frvx2 3/3 Running 0 53m azure-file-csi-driver-node-lf5kb 3/3 Running 0 53m azure-file-csi-driver-node-mqdhh 3/3 Running 0 53m azure-file-csi-driver-operator-7d966fc6c5-x74x5 1/1 Running 0 44m
Verify that the storage class is installed:
$ oc get storageclass
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE azurefile-csi file.csi.azure.com Delete Immediate true 10m (1) managed-csi disk.csi.azure.com Delete WaitForFirstConsumer true 35m managed-premium (default) kubernetes.io/azure-disk Delete WaitForFirstConsumer true 35m
|1||Azure File storage class|