csi-driver-nfs/docs/csi-debug.md
2020-12-27 21:42:00 +08:00

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## CSI driver debug tips
### Case#1: volume create/delete failed
- locate csi driver pod
```console
$ kubectl get pod -o wide -n kube-system | grep csi-nfs-controller
NAME READY STATUS RESTARTS AGE IP NODE
csi-nfs-controller-56bfddd689-dh5tk 5/5 Running 0 35s 10.240.0.19 k8s-agentpool-22533604-0
csi-nfs-controller-56bfddd689-sl4ll 5/5 Running 0 35s 10.240.0.23 k8s-agentpool-22533604-1
```
- get csi driver logs
```console
$ kubectl logs csi-nfs-controller-56bfddd689-dh5tk -c nfs -n kube-system > csi-nfs-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 figure out which pod does tha actual volume mount/unmount
```console
$ kubectl get pod -o wide -n kube-system | grep csi-nfs-node
NAME READY STATUS RESTARTS AGE IP NODE
csi-nfs-node-cvgbs 3/3 Running 0 7m4s 10.240.0.35 k8s-agentpool-22533604-1
csi-nfs-node-dr4s4 3/3 Running 0 7m4s 10.240.0.4 k8s-agentpool-22533604-0
```
- get csi driver logs
```console
$ kubectl logs csi-nfs-node-cvgbs -c nfs -n kube-system > csi-nfs-node.log
```
### troubleshooting connection failure on agent node
```console
mkdir /tmp/test
mount -v -t nfs -o ... nfs-server:/path /tmp/test
```