Azure Disk CSI driver for Kubernetes

About

This driver allows Kubernetes to access Azure Disk volume, csi plugin name: disk.csi.azure.com, supported accessModes: ReadWriteOnce

Disclaimer: Deploying this driver manually is not an officially supported Microsoft product. For a fully managed and supported experience on Kubernetes, use AKS with the managed Azure disk csi driver.

Project status: GA

Container Images & Kubernetes Compatibility

Driver Version	Image	supported k8s version
master branch	mcr.microsoft.com/k8s/csi/azuredisk-csi:latest	1.21+
v1.30.0	mcr.microsoft.com/oss/kubernetes-csi/azuredisk-csi:v1.30.0	1.21+
v1.29.2	mcr.microsoft.com/oss/kubernetes-csi/azuredisk-csi:v1.29.2	1.21+
v1.28.5	mcr.microsoft.com/oss/kubernetes-csi/azuredisk-csi:v1.28.5	1.21+

Driver parameters

Please refer to disk.csi.azure.com driver parameters

storage class disk.csi.azure.com parameters are compatible with built-in azuredisk plugin

Prerequisite

• The driver depends on cloud provider config file (here is config example), config file path on different platforms:
  • AKS, capz, aks-engine: /etc/kubernetes/azure.json
  • Azure RedHat OpenShift: /etc/kubernetes/cloud.conf
• specify a different config file path via configmap

  
  create configmap "azure-cred-file" before driver starts up
  

  kubectl create configmap azure-cred-file --from-literal=path="/etc/kubernetes/cloud.conf" --from-literal=path-windows="C:\\k\\cloud.conf" -n kube-system

• edge zone support in cloud provider config

  
  `extendedLocationType` and `extendedLocationName` should be added into cloud provider config file, available values of `extendedLocationName` are `attatlanta1`, `attdallas1`, `attnewyork1`, `attdetroit1`
  

  ```"extendedLocationType": "edgezone","extendedLocationName": "attatlanta1",```

• Cloud provider config can also be specified via kubernetes secret, check details here
• Make sure identity used by driver has Contributor role on node resource group
  • When install open source driver on the cluster, ensure agentpool service principal or managed service identity is assigned to the Contributor role on the resource group used to store managed disks.

Install driver on a Kubernetes cluster

• install by helm charts
• install by kubectl
• install open source CSI driver on following platforms:
  • AKS
  • Azure RedHat OpenShift
• install managed CSI driver on following platforms:
  • AKS
  • Azure RedHat OpenShift

Examples

• Basic usage

Features

• Topology (Availability Zone)
  • ZRS disk support
• Snapshot
• Volume Cloning
• Volume Expansion
• Raw Block Volume
• Windows
• Volume Limits
• fsGroupPolicy
• Workload identity
• Advanced disk performance tuning (Preview)

Troubleshooting

• CSI driver troubleshooting guide

Support

• Please see our support policy

Limitations

• Please refer to Azure Disk CSI Driver Limitations

Kubernetes Development

• Please refer to development guide

View CI Results

• Check testgrid provider-azure-azuredisk-csi-driver dashboard.

Links

• Kubernetes CSI Documentation
• Container Storage Interface (CSI) Specification