kubernetes-sigs/nfs-subdir-external-provisioner

NFS Subdir External Provisioner is a Kubernetes storage provisioner that dynamically provisions Persistent Volumes from an existing NFS server.

The tool solves the problem of automating volume provisioning for Kubernetes clusters that already have an NFS server available. Rather than requiring manual creation of Persistent Volumes, it watches for Persistent Volume Claims and automatically creates subdirectories on the remote NFS server to back them, naming each volume as a combination of namespace, claim name, and volume name. This approach leverages existing NFS infrastructure without requiring changes to the server itself.

Teams should adopt this provisioner if they have an operational NFS server and want to enable dynamic storage provisioning in their Kubernetes clusters without managing individual volume creation. It suits environments where NFS is the preferred or available storage backend. The tool can be deployed via Helm or Kustomize, with straightforward configuration requiring only the NFS server's hostname and exported share path. The README explicitly notes this is a migration from an earlier incubator project, with the container image now hosted at the official Kubernetes registry.

The project acknowledges that automated end-to-end testing remains a pending development area and explicitly invites contributions in this space. Development activity centers on the core provisioning functionality, with the team maintaining compatibility with earlier deployment approaches while updating the underlying container infrastructure.