Azureblob-nfs-premium Driver Support on Windows

Question

We are trying to onboard a customer to AKS using windows containers and mounting a persistent volume from Azure storage to store logs.  When using the Azure blob driver, however, there is following error – “MountVolume.MountDevice failed for volume "pvc-d47c1969-085a-464b-8b40-9cc6a5100710" : kubernetes.io/csi: attacher.MountDevice failed to create newCsiDriverClient: driver name blob.csi.azure.com not found in the list of registered CSI drivers”

 

The driver is installed, though (verified with ‘az aks show’). Our docs say that the BlobFuse CSI driver doesn’t work with Windows containers. But using the azureblob-nfs-premium driver and the docs don’t say anything about that one not working on Windows. Still, noticed getting the same error using the BlobFuse driver, so it is that the blob NFS driver might also not be supported on Windows even though the docs don’t mention that ?

Answer 1

Hi @Basujita Bhattacharya

NFS Azure file shares aren't supported for Windows as mentioned here.

In your AKS cluster even if you enabled Azure Blob CSI driver, the Blob CSI driver will not be installed on the AKS Windows nodes, and you can verify as follows:

1. This command will show the enabled CSI drivers on your AKS cluster:
   kubectl get csidrivers
2. This command will show the CSI nodes
   kubectl get csinodes
3. Describe to the Windows node to show the enabled driver on that node:
   kubectl describe csinodes <window-node>
   You will get similar to this output which means that the Blob CSI driver is not installed on The Windows node:

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