kubelet fails to be restarted when the NFS server is offline.

[llchry]

Hi team,

I'd like to report the current issue of our k8s cluster .

Prerequisites

1. Start the NFS server on machine1.
2. Mount the NFS shared disk of machine1 to machine2, mount -o nfsvers=4,rw,tcp,retry=0,timeo=${mount_timeo:-6000} 172.10.10.10:/opt/backup/ /opt/backup/elasticsearch/repo
3. Stop the NFS server on machine 1.
4. Restart kubelet on machine 2.

The Kubernetes version is v1.25.3. In this case, access to the shared disk on machine 2 is blockedwhich I guess is why kubelet fails to start. Therefore, I suggest that you use the OS library to access system resources. Do you add a timeout setting to avoid startup failure in this case?

[tamilselvan1102]

Most of the operations on nfs mountpoint will hang if the connection to nfs server is lost.

[tamilselvan1102]

/sig storage

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/lifecycle stale

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/lifecycle rotten

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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Reopen this issue with /reopen
• Mark this issue as fresh with /remove-lifecycle rotten
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/close not-planned

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