kubernetes/cmd/kubeadm/app/phases/markcontrolplane/markcontrolplane.go

var labelsToAdd …

// MarkControlPlane taints the control-plane and sets the control-plane label
func MarkControlPlane(client clientset.Interface, controlPlaneName string, taints []v1.Taint) error { … }

func taintExists(taint v1.Taint, taints []v1.Taint) bool { … }

func markControlPlaneNode(n *v1.Node, taints []v1.Taint) { … }