How to change control-plane-endpoint option in a live cluster?

user_13320138 0
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I deployed a cluster (on premise) as proof of concept, using this command:

sudo kubeadm init --upload-certs --pod-network-cidr=x.x.x.x/16 --control-plane-endpoint=x.x.x.x.nip.io

Now, i need to change the endpoint from x.x.x.x.nip.io to somename.example.com. How can i do this?

Kubeadm version: &version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.4", GitCommit:"e6c093d87ea4cbb530a7b2ae91e54c0842d8308a", GitTreeState:"clean", BuildDate:"2022-02-16T12:36:57Z", GoVersion:"go1.17.7", Compiler:"gc", Platform:"linux/amd64"}

kubernetes
1 Answers

Posting an answer as a community wiki out of comments, feel free to edit and expand.

Based on the documentation and very good answer (which is about switching from simple to high availability cluster and it has steps about adding --control-plane-endpoint), there's no easy/straight-forward solution to make it.

Considering risks and difficulty it's easier to create another cluster with a correct setup and migrate all workflows there.

user_155372010
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