kind-config.yaml

# this config file contains all config fields with comments
kind: Config
apiVersion: kind.sigs.k8s.io/v1alpha2
# 1 control plane node and 3 workers
nodes:
# the control plane node config
- role: control-plane
  # patch the generated kubeadm config with some extra settings
  kubeadmConfigPatches:
  - |
    apiVersion: kubeadm.k8s.io/v1beta1
    kind: ClusterConfiguration
    metadata:
      name: config
    networking:
      serviceSubnet: 10.254.0.0/16
  # patch it further using a JSON 6902 patch
  kubeadmConfigPatchesJson6902:
  - group: kubeadm.k8s.io
    version: v1beta1
    kind: ClusterConfiguration
    patch: |
      - op: add
        path: /apiServer/certSANs/-
        value: my-hostname
# the three workers
- role: worker
  # replicas specifes the number of nodes to create with this configuration
  replicas: 3