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Nov 13, 2023
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doc: add aznfs mount helper tsg #1111

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doc: add aznfs mount helper tsg
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34 changes: 34 additions & 0 deletions docs/csi-debug.md
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Expand Up @@ -144,5 +144,39 @@ kubectl delete po node-debugger-node-name-xxxx

</details>

### Troubleshooting aznfs mount
> Supported from v1.22.2
> About aznfs mount helper: https://github.com/Azure/AZNFS-mount/

<details><summary>
Check mount point information
</summary>

```console
kubectl debug node/node-name --image=nginx
findmnt -t nfs
```

The `SOURCE` of the mount point should have prefix with an ip address rather than domain name. e.g, **10.161.100.100**:/nfs02a796c105814dbebc4e/pvc-ca149059-6872-4d6f-a806-48402648110c.

</details>


<details><summary>
Get client-side logs on Linux node
</summary>

```console
kubectl debug node/node-name --image=nginx

cat /opt/microsoft/aznfs/data/aznfs.log
```

If ip was migrated successfully, you should find logs like:
1. `IP for nfsxxxxx.blob.core.windows.net changed [1.2.3.4 -> 5.6.7.8].`
2. `Updating mountmap entry [nfsxxxxx.blob.core.windows.net 10.161.100.100 1.2.3.4 -> nfsxxxxx.blob.core.windows.net 10.161.100.100 5.6.7.8]`

</details>

### Tips
- [Troubleshoot Azure Blob storage mount issues on AKS](http://aka.ms/blobmounterror)