You can use Alibaba Cloud disks as the storage resources for Windows containers that run in a Container Service for Kubernetes (ACK) cluster. This topic describes how to mount Alibaba Cloud disks to Windows containers.

Procedure

  1. Deploy the FlexVolume plug-in in the ACK cluster.
    1. Create a YAML file.

      Use the following template to create a YAML file, and deploy the FlexVolume plug-in in the ACK cluster. Then, create a StorageClass in the Windows environment, and update the default component alicloud-disk-controller in the ACK cluster. This allows you to mount Alibaba Cloud disks as Windows persistent volumes (PVs).

      FlexVolume is a storage plug-in that is supported by Kubernetes. For more information, see Volume plug-ins. 

      kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: alicloud-disk-common-windows
provisioner: alicloud/disk
parameters:
  type: cloud
  fstype: ntfs
---
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: alicloud-disk-efficiency-windows
provisioner: alicloud/disk
parameters:
  type: cloud_efficiency
  fstype: ntfs
---
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: alicloud-disk-ssd-windows
provisioner: alicloud/disk
parameters:
  type: cloud_ssd
  fstype: ntfs
---
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: alicloud-disk-available-windows
provisioner: alicloud/disk
parameters:
  type: available
  fstype: ntfs
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: alicloud-disk-controller
  namespace: kube-system
spec:
  selector:
    matchLabels:
      app: alicloud-disk-controller
  template:
    metadata:
      labels:
        app: alicloud-disk-controller
    spec:
      affinity:
        nodeAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - preference:
              matchExpressions:
              - key: node-role.kubernetes.io/master
                operator: Exists
            weight: 1
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: type
                operator: NotIn
                values:
                - virtual-kubelet
      containers:
      - env:
        - name: OS_PLATFORM
          value: windows
        image: registry-vpc.cn-shenzhen.aliyuncs.com/acs/alicloud-disk-controller:v1.16.9.54-a6c644bd-aliyun
        imagePullPolicy: IfNotPresent
        livenessProbe:
          exec:
            command:
            - sh
            - -c
            - ls /alicloud-disk-controller
          failureThreshold: 8
          initialDelaySeconds: 15
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 15
        name: alicloud-disk-controller
        resources:
          limits:
            cpu: 100m
            memory: 100Mi
          requests:
            cpu: 100m
            memory: 100Mi
        volumeMounts:
        - mountPath: /etc/kubernetes/
          name: cloud-config
        - mountPath: /var/log/alicloud/
          name: logdir
        - mountPath: /var/addon
          name: addon-token
          readOnly: true
      nodeSelector:
        beta.kubernetes.io/os: linux
      serviceAccount: admin
      serviceAccountName: admin
      volumes:
      - hostPath:
          path: /etc/kubernetes/
          type: ""
        name: cloud-config
      - hostPath:
          path: /var/log/alicloud/
          type: ""
        name: logdir
      - name: addon-token
        secret:
          defaultMode: 420
          items:
          - key: addon.token.config
            path: token-config
          secretName: addon.csi.token
---
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  labels:
    k8s-volume: flexvolume
  name: flexvolume-windows
  namespace: kube-system
spec:
  selector:
    matchLabels:
      name: acs-flexvolume
  template:
    metadata:
      labels:
        name: acs-flexvolume
    spec:
      containers:
      - args:
        - -Command
        - /entrypoint-windows.ps1
        command:
        - pwsh.exe
        env:
        - name: ACS_DISK
          value: "true"
        - name: ACS_NAS
          value: "true"
        - name: ACS_SMB
          value: "true"
        image: registry.cn-hangzhou.aliyuncs.com/acs/flexvolume:v1.16.9.7be0fa0-windows1809
        imagePullPolicy: Always
        name: acs-flexvolume
        resources:
          limits:
            memory: 200Mi
          requests:
            cpu: 100m
            memory: 200Mi
        securityContext:
          privileged: true
        volumeMounts:
        - mountPath: C:\host
          name: usrdir
      nodeSelector:
        beta.kubernetes.io/os: windows
      tolerations:
      - effect: NoSchedule
        key: os
        operator: Equal
        value: windows
      volumes:
      - hostPath:
          path: C:\
          type: ""
        name: usrdir
  updateStrategy:
    rollingUpdate:
      maxUnavailable: 1
    type: RollingUpdate

    2. In the command-line interface (CLI), enter kubectl apply -f <YAML file name>.yaml to deploy the plug-in.
  2. Create an application.
    1. Use the following YAML template to create a persistent volume claim (PVC) and a StatefulSet. This allows you to check whether the storage plug-in works as expected.
      apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  ports:
  - port: 80
    name: web
  clusterIP: None
  selector:
    app: nginx
---
apiVersion: apps/v1beta2
kind: StatefulSet
metadata:
  name: disk-windows
spec:
  selector:
    matchLabels:
      app: nginx
  serviceName: "nginx"
  replicas: 1
  template:
    metadata:
      labels:
        app: nginx
    spec:
      tolerations:
      - effect: NoSchedule
        key: os
        operator: Equal
        value: windows
      containers:
      - name: nginx
        image: registry.cn-hangzhou.aliyuncs.com/acs/flexvolume:v1.16.9.7be0fa0-windows1809
        command: ["pwsh.exe"]
        args: ["-Command", "start-sleep 10000"]
        volumeMounts:
          - name: disk-essd
            mountPath: "C:\\data"
  volumeClaimTemplates:
  - metadata:
      name: disk-essd
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: alicloud-disk-essd-windows
      resources:
        requests:
          storage: 20Gi
    If the storage plug-in is deployed, after you run the kubectl get pv command, the PV is automatically created.
    The following output is returned:
    NAME                     CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM              STORAGECLASS        REASON   AGE
d-2zeh2yew2t48lu75joy1   20Gi       RWO            Delete           Bound    default/pvc-disk   alicloud-disk-ssd            2m46s