This error message indicates that the file kube-controller-manager.kubeconfig could not be found in the current directory. This could be because the file does not exist, or because you are in the wrong directory.

To fix this error, you can try one of the following solutions:

• Make sure that the file kube-controller-manager.kubeconfig exists in the current directory. You can use the ls command to list the contents of the current directory and see if the file is present.

• If the file exists, but you are in the wrong directory, you can use the cd command to change to the directory where the file is located, and then run the mv command again.

• If the file does not exist, you will need to create it or obtain it from another source. You can use the touch command to create an empty file with the correct name, and then edit the file to add the required configuration.
  For example, you can try the following commands:

cd /path/to/directory/where/file/should/be
ls

If the file is not listed, try creating it

touch kube-controller-manager.kubeconfig

Edit the file to add the required configuration

nano kube-controller-manager.kubeconfig

Once the file is configured, you can try moving it again

sudo mv kube-controller-manager.kubeconfig /var/lib/kubernetes/

from kubernetes-the-hard-way.

Make sure you have completed step 5. You make the file yourself.

from kubernetes-the-hard-way.