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External Server Example

The usual patterns should work here:

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  volumes:
  - name: nfs
    nfs:
      server: <NFS_SERVER_IP>
      path: /

NFS Client Provisioner

For an easy way to get up and running serving shared volumes on Kubernetes from an existing NFS server, check out the nfs-client provisioner.

Provisioners like this one allow you to use Kubernetes to manage the lifecycle of your Kubernetes volumes and their data using PVCs, or PersistentVolumeClaims.

The basic workflow is as follows:

1. User creates a PVC resource in Kubernetes with an attached StorageClass (if none is specified, the default will be used based on your cloud type - this blog post lists the default storage classes for each cloud provider)
2. Kubernetes uses the StorageClass to determine how/whether a PV (PersistentVolume) should be created based on the claim parameters (e.g. for NFS, this effectively does a mkdir)
3. If no existing static PV matches the parameters in the PVC, a new one should be dynamically created
4. The PV can then be mounted into client pods by specifying the PVC name as a volume

For more details, see https://kubernetes.io/docs/concepts/storage/persistent-volumes/#dynamic

Basic In-Cluster Server Example

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