# kubeadm-config.yaml
kind: ClusterConfiguration
apiVersion: kubeadm.k8s.io/v1beta2
kubernetesVersion: v1.21.2
networking:
  dnsDomain: c1.k8s.ooo
  podSubnet: 2a0a:e5c0:2:e::/64
  serviceSubnet: 2a0a:e5c0:2:f::/108
---
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
cgroupDriver: cgroupfs