// given that pod's spec and annotations or returns an error.
func (kl *Kubelet) GeneratePodHostNameAndDomain(pod *v1.Pod) (string, string, error) {
	clusterDomain := kl.dnsConfigurer.ClusterDomain

	hostname := pod.Name
	if len(pod.Spec.Hostname) > 0 {
		if msgs := utilvalidation.IsDNS1123Label(pod.Spec.Hostname); len(msgs) != 0 {

		registerWithTaints:             registerWithTaints,
		registerSchedulable:            registerSchedulable,
		dnsConfigurer:                  dns.NewConfigurer(kubeDeps.Recorder, nodeRef, nodeIPs, clusterDNS, kubeCfg.ClusterDomain, kubeCfg.ResolverConfig),
		serviceLister:                  serviceLister,
		serviceHasSynced:               serviceHasSynced,
		nodeLister:                     nodeLister,
		nodeHasSynced:                  nodeHasSynced,

  quoted_dns_domain=$(yaml-quote "${DNS_DOMAIN}")
  cat <<EOF
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
cgroupRoot: /
clusterDNS:
  - ${quoted_dns_server_ip}
clusterDomain: ${quoted_dns_domain}
readOnlyPort: 10255
EOF

  # Note: ENABLE_MANIFEST_URL is used by GKE.
  # TODO(mtaufen): remove this since it's not used in kubernetes/kubernetes nor
  # kubernetes/test-infra.