func initIdentity(set *apps.StatefulSet, pod *v1.Pod) {
	updateIdentity(set, pod)
	// Set these immutable fields only on initial Pod creation, not updates.
	pod.Spec.Hostname = pod.Name
	pod.Spec.Subdomain = set.Spec.ServiceName
}

// updateIdentity updates pod's name, hostname, and subdomain, and StatefulSetPodNameLabel to conform to set's name
// and headless service.
func updateIdentity(set *apps.StatefulSet, pod *v1.Pod) {

		// assume the Pod is consistent
		consistent := true
		// if the Pod does not conform to its identity, update the identity and dirty the Pod
		if !identityMatches(set, pod) {
			updateIdentity(set, pod)
			consistent = false
		}
		// if the Pod does not conform to the StatefulSet's storage requirements, update the Pod's PVC's,
		// dirty the Pod, and create any missing PVCs
		if !storageMatches(set, pod) {