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Does communication failure between the kubelet and the Trident CSI plugin causes unexpected node reboot?

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Category:
trident-kubernetes
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snapx
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Applies to

Trident

Answer

No. Please find the detailed explanation.

dial unix /var/lib/kubelet/plugins_registry/csi.trident.netapp.io-reg.sock: connect: connection refused

This error is a communication failure between the kubelet and the Trident CSI plugin via a Unix domain socket. Specifically:

  • The socket /var/lib/kubelet/plugins_registry/csi.trident.netapp.io-reg.sock is either not present, not listening, or Trident CSI plugin is not running at that moment.
  • connection refused typically means the Trident CSI driver pod wasn’t running or not ready at the time kubelet tried to register it.
  • This causes kubelet to delay the plugin registration, but it’s not a fatal kernel or system error.

 This is not a reboot-causing error.

It’s a symptom that the Trident CSI plugin wasn’t available when kubelet tried to connect. If the node rebooted, the cause is likely elsewhere — and this CSI error may just be a consequence of the node or service restart, not the trigger.

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