title: 'Kubelet stopped posting node status' and node inaccessible
body: <p>I am having some issues with a fairly new cluster where a couple of nodes (always seems to happen in pairs but potentially just a coincidence) will become NotReady and a <code>kubectl describe</code> will say that the Kubelet stopped posting node status for memory, disk, PID and ready.</p>
  <p>All of the running pods are stuck in Terminating (can use k9s to connect to the cluster and see this) and the only solution I have found is to cordon and drain the nodes. After a few hours they seem to be being deleted and new ones created. Alternatively I can delete them using kubectl.</p>
  <p>They are completely inaccessible via ssh (timeout) but AWS reports the EC2 instances as having no issues.</p>
  <p>This has now happened three times in the past week. Everything does recover fine but there is clearly some issue and I would like to get to the bottom of it.</p>
  <p>How would I go about finding out what has gone on if I cannot get onto the boxes at all? (Actually just occurred to me to maybe take a snapshot of the volume and mount it so will try that if it happens again, but any other suggestions welcome)</p>
  <p>Running kubernetes v1.18.8</p>