Error from server: error dialing backend: dial tcp 10.150.1.45:10250
: i/o timeout
kubectl exec/logs kubctl top node
They all failed because of this.
I've confirmed 10250 are open on all node in the cluster.
But kubectl --1> API Server -2-> Node kubelet
2 part always IO timeout.
kubectl get po, manage the pods are all OK.
I checked the firewall rule even add 0.0.0.0/0
to node:10250 still no luck.
Please help me. I have run out of ideas. Everything is working just 10 days ago then suddenly kubectl exec is not working.