Kubernetes installing fails on Debian 9
[ERROR Port-10251]: Port 10251 is in use
Port 10251 is used by kube-scheduler. Looks like it is not free due to the previous kubernetes installation. Skipping preflight checks won't help here.
I suggest doing the following:
kubeadm reseton all the nodes.- Reboot all the nodes if possible.
kubeadm init <optional arguments>on master.kubeadm join <arguments>on the worker nodes.