This error occurs when the kubelet becomes unresponsive and stops processing pod operations, typically due to deadlock or resource exhaustion.
The "Kubelet hang" error indicates that the kubelet process is stuck and not responding to requests.
kubectl get node <node> -o yaml
journalctl -u kubelet -n 200
kubectl debug node/<node> -it --image=busybox && df -h
free -h
If restart doesn't help, reboot node. Monitor for resource exhaustion.
Failed to connect to server: connection refused (HTTP/2)
How to fix "HTTP/2 connection refused" error in Kubernetes
missing request for cpu in container
How to fix "missing request for cpu in container" in Kubernetes HPA
error: invalid configuration
How to fix "error: invalid configuration" in Kubernetes
sudo systemctl restart kubelet