Nutanix CSI Driver compatibility with Kubernetes 1.12/+ | Nutanix Community
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CSI Driver for Kubernetes was introduced one month ago leverages Nutanix Volumes (formerly known as ABS) to provide scalable and persistent storage for stateful applications. (For more info check this blog post )



With the recent Kubernetes 1.12 some breaking changes were introduced (More details mentioned here # 68688 ), it makes current CSI driver not working.



Volume mounting is failing with error like:



code:
Events:

 Type        Reason         Age        From                Message

 ----       ------         ----       ----                 -------

 Normal     Scheduled     2m41s     default-scheduler    Successfully
assigned default/server-3-pbvzg to gfs3.local

 Normal   SuccessfulAttachVolume 2m41s       attachdetach-controller AttachVolume.Attach
succeeded for volume "pvc-e12c700d-dc71-11e8-b694-506b8da94890"

 Warning    FailedMount     38s   kubelet, gfs3.local   Unable to mount volumes for pod "server-3-pbvzg_default(4b72238d-dcf1-11e8-b694-506b8da94890)": timeout expired waiting for volumes to attach or mount for pod "default"/"server-3-pbvzg". list of unmounted volumes=[mypvc-3]. list of unattached volumes=[mypvc-3 default-token-nvzpz]

 Warning    FailedMount     7s (x7 over 39s) kubelet, gfs3.local   MountVolume.MountDevice failed for volume "pvc-e12c700d-dc71-11e8-b694-506b8da94890" : driver name com.nutanix.csi not found in the list of registered CSI drivers










From PR Add CSI action required to 1.12 release notes


  • In anticipation of CSI 1.0 in the next release, Kubernetes 1.12 calls the CSI
    code:
    NodeGetInfo
    RPC instead of
    code:
    NodeGetId
    RPC. Ensure your CSI Driver implements
    code:
    NodeGetInfo(...)
    before upgrading to 1.12


  • Kubernetes 1.12 also enables Kubelet device plugin registration feature by default. Before upgrading to 1.12, ensure the
    code:
    driver-registrar
    CSI sidecar container for your CSI driver is configured to handle plugin registration (set the
    code:
    --kubelet-registration-path
    parameter on
    code:
    driver-registrar
    to expose a new unix domain socket to handle Kubelet Plugin Registration).





Nutanix is aware of these changes and working on fix to address this RPC call changes for the CSI driver , will be available soon.



Please make sure to check the CSI documentation before upgrading to K8's 1.12 or above.
The CSI Driver has been updated to work with the changes done on Kubernetes 1.12 side,



The CSI deployment link mentioned in the CSI documentation here , is up-to-date now.
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