Let controllers ignore initialization timeout error when creating a pod.

pkg/controller/replication/replication_controller.go

@@ -462,6 +462,16 @@ func (rm *ReplicationManager) manageReplicas(filteredPods []*v1.Pod, rc *v1.Repl
 					Controller:         boolPtr(true),
 				}
 				err = rm.podControl.CreatePodsWithControllerRef(rc.Namespace, rc.Spec.Template, rc, controllerRef)
+				if err != nil && errors.IsTimeout(err) {
+					// Pod is created but its initialization has timed out.
+					// If the initialization is successful eventually, the
+					// controller will observe the creation via the informer.
+					// If the initialization fails, or if the pod keeps
+					// uninitialized for a long time, the informer will not
+					// receive any update, and the controller will create a new
+					// pod when the expectation expires.
+					return
+				}
 				if err != nil {
 					// Decrement the expected number of creates because the informer won't observe this pod
 					glog.V(2).Infof("Failed creation, decrementing expectations for controller %q/%q", rc.Namespace, rc.Name)