5.4. Postinstallation storage configuration

Procedure

1. Create a storageclass_csi.yaml file to define the storage class:

   apiVersion: storage.k8s.io/v1
   kind: StorageClass
   metadata:
     name: hostpath-csi
   provisioner: kubevirt.io.hostpath-provisioner
   reclaimPolicy: Delete 

   1

   
   volumeBindingMode: WaitForFirstConsumer 

   2

   
   parameters:
     storagePool: my-storage-pool 

   3

   • reclaimPolicy specifies whether the underlying storage is deleted or retained when a user deletes a PVC. The two possible reclaimPolicy values are Delete and Retain. If you do not specify a value, the default value is Delete.

   • volumeBindingMode specifies the timing of PV creation. In this example, the WaitForFirstConsumer configuration delays PV creation until the scheduler assigns a pod to a specific node.

     참고

     Virtual machines use data volumes based on local PVs, which reside on specific nodes. When the system prepares a disk image for the virtual machine, the scheduler might not place the virtual machine on the node where it pinned the local storage PV.

     + To solve this problem, use the Kubernetes pod scheduler to bind the persistent volume claim (PVC) to a PV on the correct node. Setting the volumeBindingMode parameter of the StorageClass to WaitForFirstConsumer delays PV binding and provisioning until you create a pod that uses the PVC.

   • parameters.storagePool specifies the name of the storage pool defined in the HPP custom resource (CR).
2. Save the file and exit.

3. Create the StorageClass object by running the following command:

   $ oc create -f storageclass_csi.yaml