kube-proxy-configuration in kubeadmconfigspec breaks flatcar build

[heytrav]

Following #130 I am attempting to setup a Flatcar cluster which requires overriding some of specs created by this helm chart.

Based on the flatcar template I need to add the following to the controlPlane.kubeadmConfigSpec:

    preKubeadmCommands:
      - export COREOS_OPENSTACK_HOSTNAME=${COREOS_OPENSTACK_HOSTNAME%.*}
      - envsubst < /etc/kubeadm.yml > /etc/kubeadm.yml.tmp
      - mv /etc/kubeadm.yml.tmp /etc/kubeadm.yml

However, when I build a cluster with the helm chart, the KubeadmControlPlane always ends up with:

    preKubeadmCommands:
      - export COREOS_OPENSTACK_HOSTNAME=${COREOS_OPENSTACK_HOSTNAME%.*}
      - envsubst < /etc/kubeadm.yml > /etc/kubeadm.yml.tmp
      - mv /etc/kubeadm.yml.tmp /etc/kubeadm.yml
      - cat /run/kubeadm/kube-proxy-configuration.yaml >> /run/kubeadm/kubeadm.yaml

On Flatcar, the kubeadm.yml file is at /etc/kubeadm.yml. The folder /run/kubeadm does not exist and the last line that is added in preKubeadmCommands is causing kubeadm.service to fail with the following error:

core@trav-fc-refactor-33-control-plane-338a2e2b-bwwcc ~ $ systemctl status kubeadm.service
× kubeadm.service - kubeadm
     Loaded: loaded (/etc/systemd/system/kubeadm.service; enabled; preset: enabled)
    Drop-In: /etc/systemd/system/kubeadm.service.d
             └─10-flatcar.conf
     Active: failed (Result: exit-code) since Mon 2023-10-09 19:37:05 UTC; 19s ago
    Process: 1277 ExecStart=/etc/kubeadm.sh (code=exited, status=1/FAILURE)
   Main PID: 1277 (code=exited, status=1/FAILURE)
        CPU: 9ms

Oct 09 19:37:05 trav-fc-refactor-33-control-plane-338a2e2b-bwwcc.novalocal systemd[1]: Starting kubeadm.service...
Oct 09 19:37:05 trav-fc-refactor-33-control-plane-338a2e2b-bwwcc.novalocal kubeadm.sh[1280]: /etc/kubeadm.sh: line 7: /run/kubeadm/kubeadm.yaml: No such file or directory
Oct 09 19:37:05 trav-fc-refactor-33-control-plane-338a2e2b-bwwcc.novalocal systemd[1]: kubeadm.service: Main process exited, code=exited, status=1/FAILURE
Oct 09 19:37:05 trav-fc-refactor-33-control-plane-338a2e2b-bwwcc.novalocal systemd[1]: kubeadm.service: Failed with result 'exit-code'.
Oct 09 19:37:05 trav-fc-refactor-33-control-plane-338a2e2b-bwwcc.novalocal systemd[1]: Failed to start kubeadm.service.

In the current iteration of #53 I had a conditional to prevent the following line from being added when ignitionBasedOS: true.

      - cat /run/kubeadm/kube-proxy-configuration.yaml >> /run/kubeadm/kubeadm.yaml

Currently I do not see a way to prevent this from being added just by overriding with my own values.yaml.

My question is: How do I override this to prevent this from being added to preKubeadmCommands:?

[heytrav]

my controlplane and nodegroup config: https://gist.github.com/heytrav/cb4ee4c60046b8d782ed9a56890ea3e7