How can I rename master nodes in a HA kubernetes cluster?

I have a kubernetes cluster with 3 master nodes. They are named master-1, master-2 and master-3. I would like to rename them as control-plane-n.

I could not find a clear procedure to do this. The closest one is how to rename a node in a cluster. So I just tried that. Here is what I did (my hosts are running ubuntu 18.04, and kubernetes v1.16.2):

On master-1:

  • kubectl drain master-3 --ignore-daemonsets
  • kubectl delete node master-3
  • Run "kubeadm token create --print-join-command" and copy the output

On master-3:

  • sudo kubeadm reset
  • sudo hostnamectl set-hostname control-plane-3
  • Modify /etc/cloud/cloud.cfg to set preserve_hostname to true
  • Reboot the VM
  • Paste in the join command from master-1, with --control-plane option added

Here is the log I got:

sudo kubeadm join 172.22.19.188:6443 --control-plane --token nxxzby.zsfdx86e7cv1rq0e     --discovery-token-ca-cert-hash sha256:553366c2f91fd3abffe3e3d1c39d9314e2d73e8a6181f4da9938a8e24fd77456
[preflight] Running pre-flight checks
    [WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/
[preflight] Reading configuration from the cluster...
[preflight] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'
[preflight] Running pre-flight checks before initializing the new control plane instance
[preflight] Pulling images required for setting up a Kubernetes cluster
[preflight] This might take a minute or two, depending on the speed of your internet connection
[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'
[certs] Using certificateDir folder "/data/kubernetes/pki"
error execution phase control-plane-prepare/certs: error creating PKI assets: failed to write or validate certificate "apiserver": certificate apiserver is invalid: x509: certificate is valid for master-3, kubernetes, kubernetes.default, kubernetes.default.svc, kubernetes.default.svc.cluster.local, not control-plane-3
To see the stack trace of this error execute with --v=5 or higher

How can I proceed? Or is there a better approach?

Thanks in advance for any idea or suggestion you can offer.