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install-driver-on-aks.md

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Install open source CSI driver on AKS cluster

When CSI driver is enabled, built-in in-tree driver(kubernetes.io/azure-disk) should not be used any more since there is potential race condition when both in-tree and CSI drivers are working.

  • Prerequisites

AKS cluster is created with user assigned identity(with naming rule AKS Cluster Name-agentpool) on agent node pool by default, make sure that identity has Contributor role on node resource group, follow below instruction to set up Contributor role on node resource group image

least privilege for CSI driver controller 
"Microsoft.Resources/subscriptions/resourceGroups/read",
"Microsoft.Compute/disks/*",
"Microsoft.Compute/snapshots/*",
"Microsoft.Compute/virtualMachines/*/read",
"Microsoft.Compute/virtualMachineScaleSets/virtualMachines/write",
"Microsoft.Compute/virtualMachineScaleSets/*/read",
"Microsoft.Compute/virtualMachineScaleSets/read" 
  • Install CSI driver

install latest released CSI driver version, following guide here

  • Set up new storage classes
kubectl create -f https://raw.githubusercontent.com/kubernetes-sigs/azuredisk-csi-driver/master/deploy/example/storageclass-azuredisk-csi.yaml

follow guide here to replace built-in storage classes on AKS