Example kubeadm.config for dual-stack

kubeadm-config.yaml

apiVersion: kubeadm.k8s.io/v1beta2
bootstrapTokens:
- groups:
  - system:bootstrappers:kubeadm:default-node-token
  token: 11n1ns.vneshg4ikfoyiy09
  ttl: 24h0m0s
  usages:
  - signing
  - authentication
kind: InitConfiguration
localAPIEndpoint:
  advertiseAddress: 192.168.1.1
  bindPort: 6443
nodeRegistration:
  criSocket: /var/run/crio/crio.sock
  name: vm-001
  taints:
  - effect: NoSchedule
    key: node-role.kubernetes.io/master
---
apiServer:
  timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns:
  type: CoreDNS
etcd:
  local:
    dataDir: /var/lib/etcd
featureGates:
  IPv6DualStack: true
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: v1.18.2
networking:
  dnsDomain: cluster.local
  podSubnet: "11.0.0.0/16,1100::/48"
  serviceSubnet: "12.0.0.0/16,fd00:4000::/112"
scheduler: {}
---
apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
mode: ipvs