Use a cloud disk volume with a PV and PVC-Container Service for Kubernetes(ACK)-阿里云帮助中心

This topic describes how to use a pre-existing cloud disk as a statically provisioned volume. This process involves manually creating a PersistentVolume (PV) that references the disk, binding it to a PersistentVolumeClaim (PVC), and then mounting it in a pod.

Prerequisites

To use a cloud disk volume, create a cloud disk in the ECS console. For more information, see Create an empty data disk.

Use a cloud disk volume with PV and PVC

Create a cloud disk PV.

You can create the PV by using a YAML manifest or in the ACK console.

Create a PV by using a YAML manifest.

Create a file named disk-pv.yaml with the following content.

apiVersion: v1
kind: PersistentVolume
metadata:
  name: d-bp1j17ifxfasvts3****
  labels:
    failure-domain.beta.kubernetes.io/zone: cn-hangzhou-b
    failure-domain.beta.kubernetes.io/region: cn-hangzhou
spec:
  capacity:
    storage: 20Gi
  storageClassName: disk
  accessModes:
    - ReadWriteOnce
  flexVolume:
    driver: "alicloud/disk"
    fsType: "ext4"
    options:
      volumeId: "d-bp1j17ifxfasvts3****"

Note

The PV name (name) must be the same as the Alibaba Cloud disk ID (volumeId).

Run the following command to create the PV.
```
kubectl apply -f disk-pv.yaml
```

Create a PV in the ACK console.

Log on to the ACK console. In the left navigation pane, click Clusters.
On the Clusters page, click the name of the destination cluster or click View Details in the Actions column.
In the left-side navigation pane, choose Volumes > Persistent Volumes.
On the Persistent Volumes page, click Create in the upper-right corner.

In the Create PV dialog box, set the following parameters.

Parameter	Description
PV Type	Select cloud disk.
Volume Plug-in	Select Flexvolume.
Access Mode	Defaults to ReadWriteOnce.
Disk ID:	Select an Available cloud disk in the same region and zone as the cluster.
File System Type:	Select the file system type. Valid values are ext4, ext3, xfs, and vfat. The default is ext4.
Labels	Add labels to the volume.

After configuring the parameters, click Create.

Create a PVC.

Create a file named disk-pvc.yaml with the following content.

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: pvc-disk
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: disk
  resources:
    requests:
      storage: 20Gi

Run the following command to create the PVC.
```
kubectl apply -f disk-pvc.yaml
```

Create a pod.

Create a file named disk-pod.yaml with the following content.

apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  ports:
  - port: 80
    name: web
  clusterIP: None
  selector:
    app: nginx
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: web
spec:
  selector:
    matchLabels:
      app: nginx
  serviceName: "nginx"
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80
          name: web
        volumeMounts:
        - name: pvc-disk
          mountPath: /data
      volumes:
        - name: pvc-disk
          persistentVolumeClaim:
            claimName: pvc-disk

Run the following command to create the pod.
```
kubectl apply -f disk-pod.yaml
```