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csi-debug.md

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CSI driver debug tips

Case#1: disk create/delete/attach/detach failed

  • locate csi driver pod
$ kubectl get po -o wide -n kube-system | grep csi-azuredisk-controller
NAME                                           READY   STATUS    RESTARTS   AGE     IP             NODE
csi-azuredisk-controller-56bfddd689-dh5tk      5/5     Running   0          35s     10.240.0.19    k8s-agentpool-22533604-0
csi-azuredisk-controller-56bfddd689-sl4ll      5/5     Running   0          35s     10.240.0.23    k8s-agentpool-22533604-1
  • get csi driver logs
$ kubectl logs `kubectl get po -n kube-system | grep csi-azuredisk-controller | cut -d ' ' -f1` -c azuredisk -n kube-system > csi-azuredisk-controller.log

note: there could be multiple controller pods, if there are no helpful logs, try to get logs from other controller pods

Case#2: volume mount/unmount failed

  • locate csi driver pod and make sure which pod do tha actual volume mount/unmount
$ kubectl get po -o wide -n kube-system | grep csi-azuredisk-node
NAME                                           READY   STATUS    RESTARTS   AGE     IP             NODE
csi-azuredisk-node-cvgbs                       3/3     Running   0          7m4s    10.240.0.35    k8s-agentpool-22533604-1
csi-azuredisk-node-dr4s4                       3/3     Running   0          7m4s    10.240.0.4     k8s-agentpool-22533604-0
  • get csi driver logs
$ kubectl logs csi-azuredisk-node-cvgbs -c azuredisk -n kube-system > csi-azuredisk-node.log