Use NAS to create dynamic storage classes

Create a dynamic PV

1. Create a StorageClass.
   A sample configuration is provided as follows:

   apiVersion: storage.k8s.io/v1
   kind: StorageClass
   metadata:
     name: alicloud-nas
   mountOptions:
   - nolock,tcp,noresvport
   - vers=3
   parameters:
     server: "23a9649583-iaq37.cn-shenzhen.nas.aliyuncs.com:/nasroot1/"
     driver: flexvolume
   provisioner: alicloud/nas
   reclaimPolicy: Delete

   Note

   • MountOptions: The mount parameter of the PV.
   • server: The mount point of the NAS volume. The format is as follows: nfsurl1:/path1,nfsurl2:/path2. When multiple servers are configured, the PV created through this StorageClass will use the above servers in round-robin manner. For NAS extreme, the path must start with /share.
   • driver: Supports flexvolume and NFS. Default is NFS.
   • reclaimPolicy: The reclaim policy of the PV. We recommend that you use Retain.
     • If you set the parameter to Delete, the NAS directory corresponding to the PV will be automatically renamed when you delete the PV. For example, path-name will be changed to archived-path-name.
     • If you need to delete the NAS directory corresponding to the PV, set archiveOnDelete to false in StorageClass configuration.
2. Use the dynamic PV.

   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:
     serviceName: "nginx"
     replicas: 5
     volumeClaimTemplates:
     - metadata:
         name: html
       spec:
         accessModes:
           - ReadWriteOnce
         storageClassName: alicloud-nas
         resources:
           requests:
             storage: 2Gi
     template:
       metadata:
         labels:
           app: nginx
       spec:
         containers:
         - name: nginx
           image: nginx:alpine
           volumeMounts:
           - mountPath: "/data"
             name: html