Mount a CPFS to an ACK CPU pod

Create a CPFS mount target

In the CPFS console, create a CPFS AI-Computing Edition file system instance and add a mount target to the VPC associated with your ACK cluster.

You can mount CPFS file systems only on CPU workloads (general-purpose and performance).

1. Log on to the File System Console and select the target region from the top navigation bar.

2. On the File System List page, find your CPFS file system. If its Mount Target count is 0, continue to the next step. Otherwise, skip to step 4.

3. In the row of the target file system, click Add in the Mount Target column. In the dialog box that appears, select the VPC and vSwitch for your ACK cluster and click OK. Wait for the mount target to be created.

   On the cluster details page, you can view the VPC associated with ACS on the Basic Information tab in the Cluster Information section.

4. Click the file system's ID to navigate to the Mounting > Mount Target page. In the Mount Target column, click the copy icon to copy the mount target address. The address is in a format similar to the following: cpfs-xxxxxxxxxxxx-vpc-xxxxxxx.cn-wulanchabu.cpfs.aliyuncs.com.

Create PV and PVC for CPFS

You need to replace the mount target address in the spec.csi.volumeAttributes.server field of the YAML file. Save the content as a YAML file, and then run the kubectl apply -f command.

apiVersion: v1
kind: PersistentVolume
metadata:
  name: bmcpfs-vpc
  labels:
    alicloud-pvname: bmcpfs-vpc
spec:
  accessModes:
  - ReadWriteMany
  capacity:
    storage: 100Gi
  storageClassName: test # A custom name used to manually bind the PV and PVC. You do not need to create a StorageClass resource beforehand.
  csi:
    driver: nasplugin.csi.alibabacloud.com
    volumeAttributes:
      mountProtocol: efc
      path: "/"
      # Required: Replace with the mount target address from the previous step.
      server: "cpfs-xxxxxxxxxxxx-vpc-xxxxxxx.cn-wulanchabu.cpfs.aliyuncs.com"
    volumeHandle: bmcpfs-vpc
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: bmcpfs-vpc
spec:
  selector:
    matchLabels:
      alicloud-pvname: bmcpfs-vpc
  accessModes:
  - ReadWriteMany
  storageClassName: test
  volumeName: bmcpfs-vpc
  resources:
    requests:
      storage: 100Gi

Create a workload and associate the PVC

The following is a Deployment example that mounts the CPFS PVC (bmcpfs-vpc) created in Step 2, where the mount path in the container is /mnt.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: test
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: test
  template:
    metadata:
      labels:
        alibabacloud.com/compute-class: general-purpose
        alibabacloud.com/compute-qos: default
        app: test
    spec:
      # affinity:
      #   nodeAffinity:
      #     requiredDuringSchedulingIgnoredDuringExecution:
      #       nodeSelectorTerms:
      #       - matchExpressions:
      #         - key: topology.kubernetes.io/zone
      #           operator: In
      #           values:
      #           - cn-wulanchabu-c # For optimal performance, make sure the pod runs in the same availability zone as the CPFS file system.
      containers:
      - command:
        - sleep
        - infinity
        image: alibaba-cloud-linux-3-registry.cn-hangzhou.cr.aliyuncs.com/alinux3/alinux3:latest
        imagePullPolicy: Always
        name: test
        resources:
          requests:
            cpu: 500m
            memory: 512Mi
        volumeMounts:
        - mountPath: /mnt
          name: cpfs
      volumes:
      - name: cpfs
        persistentVolumeClaim:
          claimName: bmcpfs-vpc