The in tree storage drivers for Kubernetes is planned to be removed in version 1.26-1.27. The new Container Storage Interface(CSI) is the way forward for handling persistent storage inside Kubernetes and it’s been GA since 1.13. For Azure disk the in tree driver is deprecated since 1.19.
Recently I’ve setup a new AKS cluster and the documentation how to setup and azure static disk volume with Azure disk CSI was a bit hard to find. So I’ll document how I did here.
Create the static disk
The official docs recommends to create disk in the node resource group of your AKS cluster.
az disk create \ --resource-group my-node-resource-group \ --name disk-aks-something \ --location swedencentral \ --os-type linux \ --sku Premium_LRS \ --size-gb 8 \ --query id --output tsv This command will output the disk id that you’ll use for as the volumeHandle in the next step.
Add the persistent volume
apiVersion: v1 kind: PersistentVolume metadata: name: pv-my-volume spec: capacity: storage: 8Gi accessModes: - ReadWriteOnce persistentVolumeReclaimPolicy: Retain csi: driver: disk.csi.azure.com readOnly: false volumeHandle: /subscriptions/subscription-id/my-node-resource-group/my-resource-group/providers/Microsoft.Compute/disks/disk-aks-something volumeAttributes: fsType: ext4 #partition: "1" # optional, remove this if there is no partition Add the persistent volume claim
kind: PersistentVolumeClaim apiVersion: v1 metadata: name: pvc-my-volume spec: accessModes: - ReadWriteOnce resources: requests: storage: 8Gi volumeName: pv-my-volume storageClassName: "" Add the pvc to your pod
kind: Pod apiVersion: v1 metadata: name: nginx-azuredisk spec: nodeSelector: kubernetes.io/os: linux containers: - image: mcr.microsoft.com/oss/nginx/nginx:1.17.3-alpine name: nginx-azuredisk command: - "/bin/sh" - "-c" - while true; do echo $(date) >> /mnt/azuredisk/outfile; sleep 1; done volumeMounts: - name: azuredisk01 mountPath: "/mnt/azuredisk" volumes: - name: azuredisk01 persistentVolumeClaim: claimName: pvc-my-volume And that’s it!
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