Kubelet reports node related events with empty namespace for now.

pkg/api/validation/events.go

@@ -25,7 +25,9 @@ import (
 // ValidateEvent makes sure that the event makes sense.
 func ValidateEvent(event *api.Event) errs.ValidationErrorList {
 	allErrs := errs.ValidationErrorList{}
-	if event.Namespace != event.InvolvedObject.Namespace {
+	// TODO: There is no namespace required for minion
+	if event.InvolvedObject.Kind != "Node" &&
+		event.Namespace != event.InvolvedObject.Namespace {
 		allErrs = append(allErrs, errs.NewFieldInvalid("involvedObject.namespace", event.InvolvedObject.Namespace, "namespace does not match involvedObject"))
 	}
 	if !util.IsDNS1123Subdomain(event.Namespace) {

pkg/kubelet/kubelet.go

@@ -2131,11 +2131,12 @@ func (kl *Kubelet) BirthCry() {
 	// Make an event that kubelet restarted.
 	// TODO: get the real minion object of ourself,
 	// and use the real minion name and UID.
+	// TODO: what is namespace for node?
 	ref := &api.ObjectReference{
-		Kind:      "Minion",
+		Kind:      "Node",
 		Name:      kl.hostname,
 		UID:       types.UID(kl.hostname),
-		Namespace: api.NamespaceDefault,
+		Namespace: "",
 	}
 	kl.recorder.Eventf(ref, "starting", "Starting kubelet.")
 }