Scenario

CCE allows you to use an existing file system to create a PersistentVolume (PV). After the creation is successful, create the corresponding PersistentVolumeClaim (PVC) and bind it to the PV.

Prerequisites

You have created a CCE cluster and installed the FlexVolume plug-in (storage-driver) in the cluster.

Notes and Constraints

The following configuration example applies to clusters of Kubernetes 1.13 or earlier.

Procedure

Log in to the SFS console, create a file system, and record the file system ID, shared path, and capacity.
Use kubectl to connect to the cluster. For details, see Connecting to a Cluster Using kubectl.

Create two YAML files for creating the PV and PVC. Assume that the file names are pv-sfs-example.yaml and pvc-sfs-example.yaml.

touch pv-sfs-example.yaml pvc-sfs-example.yaml

Kubernetes Version	Description	YAML Example
1.11 ≤ K8s version ≤ 1.13	Clusters from v1.11 to v1.13	Example YAML
K8s version = 1.9	Clusters of v1.9	Example YAML

Clusters from v1.11 to v1.13

Example YAML file for the PV:

apiVersion: v1 
kind: PersistentVolume 
metadata: 
  name: pv-sfs-example 
  annotations:
    pv.kubernetes.io/provisioned-by: flexvolume-huawei.com/fuxinfs
spec: 
  accessModes: 
  - ReadWriteMany 
  capacity: 
    storage: 10Gi 
  claimRef:
    apiVersion: v1
    kind: PersistentVolumeClaim
    name: pvc-sfs-example
    namespace: default
  flexVolume: 
    driver: huawei.com/fuxinfs 
    fsType: nfs 
    options: 
      deviceMountPath: <your_deviceMountPath>  # Shared storage path of your file.
      fsType: nfs 
      volumeID: f6976f9e-2493-419b-97ca-d7816008d91c 
  persistentVolumeReclaimPolicy: Delete 
  storageClassName: nfs-rw

**Table 1** Key parameters
Parameter	Description
driver	Storage driver used to mount the volume. Set the driver to huawei.com/fuxinfs for the file system.
deviceMountPath	Shared path of the file system. On the management console, choose Service List > Storage > Scalable File Service. You can obtain the shared path of the file system from the Mount Address column.
volumeID	File system ID. To obtain the ID, log in to the CCE console, choose Resource Management > Storage, click the PVC name in the SFS tab page, and copy the PVC ID on the PVC details page.
storage	File system size.
storageClassName	Read/write mode supported by the file system. Currently, nfs-rw and nfs-ro are supported.
spec.claimRef.apiVersion	The value is fixed at v1.
spec.claimRef.kind	The value is fixed at PersistentVolumeClaim.
spec.claimRef.name	The value is the same as the name of the PVC created in the next step.
spec.claimRef.namespace	Namespace of the PVC. The value is the same as the namespace of the PVC created in the next step.

Example YAML file for the PVC:

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  annotations:
    volume.beta.kubernetes.io/storage-class: nfs-rw
    volume.beta.kubernetes.io/storage-provisioner: flexvolume-huawei.com/fuxinfs
  name: pvc-sfs-example
  namespace: default
spec:
  accessModes:
  - ReadWriteMany
  resources:
    requests:
      storage: 10Gi
  volumeName: pv-sfs-example

**Table 2** Key parameters
Parameter	Description
volume.beta.kubernetes.io/storage-class	Read/write mode supported by the file system. nfs-rw and nfs-ro are supported. The value must be the same as that of the existing PV.
volume.beta.kubernetes.io/storage-provisioner	Must be set to flexvolume-huawei.com/fuxinfs.
storage	Storage capacity, in the unit of Gi. The value must be the same as the storage size of the existing PV.
volumeName	Name of the PV.

Clusters of v1.9