(kubectl) Creating a PV from an Existing OBS Bucket

Scenario

CCE allows you to use an existing OBS bucket to create a PersistentVolume (PV). You can create a PersistentVolumeClaim (PVC) and bind it to the PV.

Notes and Constraints

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

Procedure

Log in to the OBS console, create an OBS bucket, and record the bucket name and storage class.
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-obs-example.yaml and pvc-obs-example.yaml.

touch pv-obs-example.yaml pvc-obs-example.yaml

Kubernetes Cluster 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-obs-example 
  annotations:
    pv.kubernetes.io/provisioned-by: flexvolume-huawei.com/fuxiobs
spec: 
  accessModes: 
  - ReadWriteMany 
  capacity: 
    storage: 1Gi 
  claimRef:
    apiVersion: v1
    kind: PersistentVolumeClaim
    name: pvc-obs-example
    namespace: default
  flexVolume: 
    driver: huawei.com/fuxiobs 
    fsType: obs 
    options: 
      fsType: obs 
      region: ap-southeast-1
      storage_class: STANDARD 
      volumeID: test-obs 
  persistentVolumeReclaimPolicy: Delete 
  storageClassName: obs-standard

**Table 1** Key parameters
Parameter	Description
driver	Storage driver used to mount the volume. Set the driver to huawei.com/fuxiobs for the OBS volume.
storage_class	Storage class, including STANDARD (standard bucket) and STANDARD_IA (infrequent access bucket).
region	Region where the cluster is located.
volumeID	OBS bucket name. To obtain the name, log in to the CCE console, choose Resource Management > Storage, click the PVC name in the OBS tab page, and copy the PV name on the PV Details tab page.
storage	Storage capacity, in Gi. The value is fixed at 1Gi.
storageClassName	Storage class supported by OBS, including obs-standard (standard bucket) and obs-standard-ia (infrequent access bucket).
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	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: obs-standard
    volume.beta.kubernetes.io/storage-provisioner: flexvolume-huawei.com/fuxiobs
  name: pvc-obs-example
  namespace: default
spec:
  accessModes:
  - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  volumeName: pv-obs-example

**Table 2** Key parameters
Parameter	Description
volume.beta.kubernetes.io/storage-class	Storage class supported by OBS, including obs-standard and obs-standard-ia.
volume.beta.kubernetes.io/storage-provisioner	Must be set to flexvolume-huawei.com/fuxiobs.
volumeName	Name of the PV.
storage	Storage capacity, in Gi. The value is fixed at 1Gi.

Clusters of v1.9

Example YAML file for the PV:

apiVersion: v1 
kind: PersistentVolume 
metadata: 
  name: pv-obs-example 
  namespace: default  
spec: 
  accessModes: 
  - ReadWriteMany 
  capacity: 
    storage: 1Gi 
  flexVolume: 
    driver: huawei.com/fuxiobs 
    fsType: obs 
    options: 
      fsType: obs 
      kubernetes.io/namespace: default 
      region: ap-southeast-1
      storage_class: STANDARD 
      volumeID: test-obs 
  persistentVolumeReclaimPolicy: Delete 
  storageClassName: obs-standard

**Table 3** Key parameters
Parameter	Description
driver	Storage driver used to mount the volume. Set the driver to huawei.com/fuxiobs for the OBS volume.
storage_class	Storage class, including STANDARD (standard bucket) and STANDARD_IA (infrequent access bucket).
region	Region where the cluster is located.
volumeID	OBS bucket name. To obtain the name, log in to the CCE console, choose Resource Management > Storage, click the PVC name in the OBS tab page, and copy the PV name on the PV Details tab page.
storage	Storage capacity, in Gi. The value is fixed at 1Gi.
storageClassName	Storage class supported by OBS, including obs-standard (standard bucket) and obs-standard-ia (infrequent access bucket).

Example YAML file for the PVC:

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  annotations:
    volume.beta.kubernetes.io/storage-class: obs-standard
    volume.beta.kubernetes.io/storage-provisioner: flexvolume-huawei.com/fuxiobs
  name: pvc-obs-example
  namespace: default
spec:
  accessModes:
  - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  volumeName: pv-obs-example
  volumeNamespace: default

**Table 4** Key parameters
Parameter	Description
volume.beta.kubernetes.io/storage-class	Storage class supported by OBS, including obs-standard and obs-standard-ia.
volume.beta.kubernetes.io/storage-provisioner	Must be set to flexvolume-huawei.com/fuxiobs.
volumeName	Name of the PV.
storage	Storage capacity, in Gi. The value is fixed at 1Gi.