How do I create a storage class for NFS dynamic storage provisioning in an OpenShift environment?

Steps

1. Ensure you have an NFS share setup and accessible to your OpenShift cluster. You need to know the following details:
   • NFS server hostname or IP address
   • The path for your shared NFS directory
2. Download the setup files for the provisioner from GitHub at Kubernetes NFS Subdir External Provisioner..
3. Extract the files and find the needed yaml files at nfs-subdir-external-provisioner-master\deploy\.
4. Run these two commands to deploy the provisioner security settings:
   oc create -f rbac.yaml
   oc adm policy add-scc-to-user hostmount-anyuid system:serviceaccount:default:nfs-client-provisioner
   Note: If you need to deploy this to a project other than "default", replace each mention of default for the namespace in rbac.yaml, deployment.yaml and the oc adm command.
5. Edit the deployment.yaml file to include the proper NFS host and path for each location it is used.
   For example:

   apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: nfs-client-provisioner
     labels:
       app: nfs-client-provisioner
     # replace with namespace where provisioner is deployed
     namespace: default
   spec:
     replicas: 1
     strategy:
       type: Recreate
     selector:
       matchLabels:
         app: nfs-client-provisioner
     template:
       metadata:
         labels:
           app: nfs-client-provisioner
       spec:
         serviceAccountName: nfs-client-provisioner
         containers:
           - name: nfs-client-provisioner
             image: k8s.gcr.io/sig-storage/nfs-subdir-external-provisioner:v4.0.2
             volumeMounts:
               - name: nfs-client-root
                 mountPath: /persistentvolumes
             env:
               - name: PROVISIONER_NAME
                 value: k8s-sigs.io/nfs-subdir-external-provisioner
               - name: NFS_SERVER
                 value: MyNFSHostname
               - name: NFS_PATH
                 value: /nfs/cpshare/
         volumes:
           - name: nfs-client-root
             nfs:
               server: MyNFSHostname
               path: /nfs/cpshare/
6. Run this command to deploy the NFS-client provisioner.
   oc create -f deployment.yaml
   Note: The container for this provisioner is coming from k8s.gcr.io.
7. Edit the class.yaml file to use the wanted names. In this example the storage class name is managed-nfs-storage.

   apiVersion: storage.k8s.io/v1
   kind: StorageClass
   metadata:
     name: managed-nfs-storage
   provisioner: k8s-sigs.io/nfs-subdir-external-provisioner # or choose another name, must match deployment's env PROVISIONER_NAME'
   parameters:
     pathPattern: "${.PVC.namespace}-${.PVC.name}"
     archiveOnDelete: "false"
   
8. Create the storage class for your dynamic provisioner.
   oc create -f class.yaml
9. As mentioned in the documentation, you can also test it out with these steps:
   1. Create a test PVC and pod with this command:
      oc create -f test-claim.yaml -f test-pod.yaml
      Note: test-pod.yaml points to busybox:stable, your environment might not be able to resolve that. You might have to pull the busybox image into your image registry from docker hub.
   2. Check for SUCCESS file created in your NFS share directory at the path for the PVC.
   3. Clean up the config and pods with this command:
      oc delete -f test-pod.yaml -f test-claim.yaml