How to use mountOptions with Deployment templates?

[ptitvert]

Hello,
We use such template:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nfs-xy-provisioner
  labels:
    app: nfs-xy-provisioner
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: nfs-xy-provisioner
  template:
    metadata:
      labels:
        app: nfs-xy-provisioner
    spec:
      serviceAccountName: nfs-client-provisioner
      containers:
        - name: nfs-xy-provisioner
          image: XYZ/k8s-staging-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-xxx-xy-provisioner
            - name: NFS_SERVER
              value: myServer.example.com
            - name: NFS_PATH
              value:  /my/path/xy_eingang
      volumes:
        - name: nfs-client-root
          nfs:
            server: myServer.example.com
            path: /my/path/xy_eingang

With the following StorageClass:

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: managed-xxx-xy-nfs-storage
provisioner: k8s-sigs.io/nfs-xxx-xy-provisioner
parameters:
  pathPattern: ""
  archiveOnDelete: "false"
reclaimPolicy: Retain

with the following pv claim

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: app-xy-pvc
  annotations:
    volume.beta.kubernetes.io/storage-class: "managed-xxx-xy-nfs-storage"
spec:
  storageClassName: "managed-xxx-xy-nfs-storage"
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 10Gi

The mount in pod:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: app-deployment
spec:
  template:
    spec:
      volumes:
        - name: app-xy
          persistentVolumeClaim:
            claimName: app-xy-pvc    
      containers:
        - name: app
          volumeMounts:
            - name: app-xy
              mountPath: /my/pod/path/xy

I don't know where to put the "nfs.mountOptions", I've tried in several location, and none works.

nfs:
  mountOptions:
    - nfsvers=3

I've checked the file "charts/nfs-subdir-external-provisioner/templates/deployment.yaml" and I don't see any mountOptions in this file. But since I am quite new on Kubernetes and on "nfs-subdir-external-provisioner", I am a bit lost on how to set it up. We don't use Helm, at all... We are using only templates with Kustomize.

Thanks in advance.

Kind regards,
Alessandro

[ptitvert]

I found the solution by myself, since nobody was interested in that question/issue.
I will write it here, so it might help some helpless soul like myself:

In the storage class, you need to add the following options:

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: managed-xxx-xy-nfs-storage
provisioner: k8s-sigs.io/nfs-xxx-xy-provisioner
parameters:
  pathPattern: ""
  archiveOnDelete: "false"
reclaimPolicy: Retain
mountOptions:
  - nfsvers=3

So simply add the "mountOptions" in the storageClass yaml file.

[eric-gitta-moore]

Hello, How could I do like this CLI?

sudo mount -t nfs -o vers=3,nolock,noacl,proto=tcp,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport file-system-id.region.extreme.nas.aliyuncs.com:/share /mnt

nolock has not value.

[eric-gitta-moore]

Hello, How could I do like this CLI?

sudo mount -t nfs -o vers=3,nolock,noacl,proto=tcp,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport file-system-id.region.extreme.nas.aliyuncs.com:/share /mnt

nolock has not value.

OK, I got it.

echo "nfs:
  server: fs1.ent.top
  path: /sea1
  mountOptions:
    - vers=3
    - nolock
    - noacl
    - proto=tcp
    - rsize=1048576
    - wsize=1048576
    - hard
    - timeo=600
    - retrans=2
    - noresvport
storageClass:
  defaultClass: true" > ~/nfs.yaml

run helm install

helm install nfs-subdir-external-provisioner nfs-subdir-external-provisioner/nfs-subdir-external-provisioner  -f ~/nfs.yaml --dry-run --debug

success if you get these

---
# Source: nfs-subdir-external-provisioner/templates/storageclass.yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  labels:
    chart: nfs-subdir-external-provisioner-4.0.18
    heritage: Helm
    app: nfs-subdir-external-provisioner
    release: nfs-subdir-external-provisioner
  name: nfs-client
  annotations:
    storageclass.kubernetes.io/is-default-class: "true"
provisioner: cluster.local/nfs-subdir-external-provisioner
allowVolumeExpansion: true
reclaimPolicy: Delete
volumeBindingMode: Immediate
parameters:
  archiveOnDelete: "true"
mountOptions:
  - vers=3
  - nolock
  - noacl
  - proto=tcp
  - rsize=1048576
  - wsize=1048576
  - hard
  - timeo=600
  - retrans=2
  - noresvport
---
# Source: nfs-subdir-external-provisioner/templates/persistentvolume.yaml

[yonatankahana]

it is also possible with helm install ... --set, e.g:
--set nfs.mountOptions={"nolock"\,"nfsvers=3"}