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how does

server: <https://IP:9345>

gets added to the

/etc/rancher/rke2/config.yaml.d/50-rancher.yaml

?

I'm new to RKE2 (not new on RKE). The way I understand your nodes to take the right action is to create the yaml file you need before installing the agent or second and third server if you're going for HA. If you're using ubuntu then id suggest looking at your /etc/resolv.conf and doing something like this for your nodes...

mkdir -p /etc/rancher/rke2/
nano /etc/rancher/rke2/config.yaml
server: https://<server>:9345
token: <token from server node>

as for CNI, you may want to look here.

<https://docs.rke2.io/install/network_options/#install-a-cni-plugin>

@curved-caravan-26314 ty for the reply, I am installing RKE2 via rancher so it does all of it for me rancher system agent does all the provisioning