Control plane upgrade

[eugenpro]

Hello. I have cluster with 3 controlplanes cpx11 and due to pod amt increasing controlplanes freequently facing lack of memory, I want to upgrade controlplanes to cx21 and add loadbalancer on top what is the best roadmap for me to not to lose the entire cluster. Thanks in advance

[eugenpro]

I've succesfully upgrraded controlplanes without downtime, just change node types one by one, and everything was fine, but when I set use_control_plane_lb to true and applied config, it updated kubeconfig with loadbalancer url but didn't updated certificates, so now when I'm trying to call api I have this:
Unable to connect to the server: x509: certificate is valid for 10.253.0.101, 10.254.0.101, 10.255.0.101, 10.43.0.1, 127.0.0.1, 111.111.111.111, 222.222.222.222, 123.123.123.123, ::1, not 101.101.101.101 where 101.101.101.101 is my lb IP,
module version is 2.7.2, is there the chance to fix it without module upgrade cause this leads to many changes and may broke the entire cluster.
I've checked the flow on another cluster and latest module version, and it was fine