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Can Trident be configured to use only the NFSv3 vs. NFSv4 protocol?

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Applies to

Astra Trident

Answer

  • Yes, the NFS version can be set in the trident backend config .json or yaml file
  • Use nfsMountOptions to select various mount options.
  • The resulting backend config can be overridden if a storageclass has nfsMountOption for same backend, which in turn can be overridden by a specific PVC yaml with NFS mount version options
  • You may also need to bounce the pods to change the connection from v4 to v3 or visa-versa.
  • You can confirm the NFS version that is currently mounted by going to a worker node where a pod is running and enter the following command, which should show the PVCs and their mount options:  # mount | grep pvc
  • Also, from the ONTAP cluster side, you can check the NFS connections using the following ONTAP command:  cluster::> vserver nfs connected-clients show
  • Please note that if you make any changes to the trident backend (if using tridentctl), you should run a tridentctl update backend command to update it.

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