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Hey Thomas, why u used advertise-address and node-ip together and why they are different?

As advertise-address I have used the virtual IP which is attached like a load balancer

i think you sohuld use one of them. advertise-address:IPv4/IPv6 address that apiserver uses to advertise to members of the cluster,

I'm not even getting so far as RKE2 doesn'T even write the binaries (crictl, kubectl etc) and it doesn't start containerd so far

Did you try this? systemctl stop firewalld; systemctl disable firewalld; systemctl stop nm-cloud-setup; systemctl disable nm-cloud-setup; systemctl stop nm-cloud-setup.timer; systemctl disable nm-cloud-setup.timer

No firewalld on Ubuntu, no known service named nm-cloud-setup

İf you want to set up with cis profile there is precondition. Can you check this? https://github.com/clemenko/rke2/blob/main/stigs_tldr.md

I have applied the requirements for the cis profile like applying sysctl configuration