Kubeadm init configutaion file sample

kubeadm-init-config.yaml

## Example Kubeadm init config file
## @see https://kubernetes.io/docs/reference/setup-tools/kubeadm/kubeadm-config
## @see https://kubernetes.io/docs/reference/config-api/kubeadm-config.v1beta3

apiVersion: kubeadm.k8s.io/v1beta3
kind: ClusterConfiguration

apiServer:
  extraArgs:
    ## Change kube-apiserver's flags to modify the default tolerations for the pods
    ## @see https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver
    ## @see https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/control-plane-flags/#apiserver-flags
    default-not-ready-toleration-seconds: "30"            # + (Default: 300s)
    default-unreachable-toleration-seconds: "30"          # + (Default: 300s)

## Set control-plane endpoint for HA cluster
controlPlaneEndpoint: "$FE_ADDR:$FE_PORT"                   # + (Matched w/ --control-plane-endpoint)

controllerManager:
  extraArgs:
    ## Change kube-controller-manager's flags to modify the default node monitoring period
    ## @see https://kubernetes.io/docs/reference/command-line-tools-reference/kube-controller-manager
    ## @see https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/control-plane-flags/#controllermanager-flags
    node-monitor-period: "2s"                             # + (Default: 5s)
    node-monitor-grace-period: "20s"                      # + (Default: 40s)

networking:
  ## Set pod network CIDR to fit in w/ Calico
  podSubnet: "$POD_NETWORK_CIDR"                           # + (Matched w/ --pod-network-cidr)
---
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
## Change kubelet's flag to modify the default node status update frequency
## @see https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet
nodeStatusUpdateFrequency: "4s"                           # + (Default: 10s)