Merge pull request #15267 from nikhiljindal/deploymentRCSelector

Deployment: Fixing the selector for new RC created by deployment

pkg/apis/extensions/v1beta1/defaults.go

@@ -44,6 +44,19 @@ func addDefaultingFuncs() {
 			}
 		},
 		func(obj *Deployment) {
+			// Default labels and selector to labels from pod template spec.
+			var labels map[string]string
+			if obj.Spec.Template != nil {
+				labels = obj.Spec.Template.Labels
+			}
+			if labels != nil {
+				if len(obj.Spec.Selector) == 0 {
+					obj.Spec.Selector = labels
+				}
+				if len(obj.Labels) == 0 {
+					obj.Labels = labels
+				}
+			}
 			// Set DeploymentSpec.Replicas to 1 if it is not set.
 			if obj.Spec.Replicas == nil {
 				obj.Spec.Replicas = new(int)