Imports github.com/golang/glog github.com/renstrom/dedent k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm k8s.io/kubernetes/cmd/kubeadm/app/preflight k8s.io/kubernetes/pkg/client/unversioned/clientcmd k8s.io/kubernetes/pkg/client/unversioned/clientcmd/api Standard library imports crypto/rand encoding/hex fmt os path strings