Imports k8s.io/api/core/v1 k8s.io/kubernetes/cmd/kubeadm/app/util k8s.io/kubernetes/cmd/kubeadm/app/util/staticpod k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm k8s.io/kubernetes/cmd/kubeadm/app/images k8s.io/kubernetes/cmd/kubeadm/app/constants Standard library imports fmt