Fix selector for shutting down Pods (#7727) (#7731)

* Fix selector for shutting down Pods

* Add autogenerated labels for daemonset in exception

Co-authored-by: Jintao Zhang <[email protected]>

Co-authored-by: Jintao Zhang <[email protected]>

Co-authored-by: Jintao Zhang <[email protected]>

Author: rikatz

internal/ingress/status/status.go

@@ -215,8 +215,21 @@ func (s *statusSync) runningAddresses() ([]string, error) {
 }
 
 func (s *statusSync) isRunningMultiplePods() bool {
+
+	// As a standard, app.kubernetes.io are "reserved well-known" labels.
+	// In our case, we add those labels as identifiers of the Ingress
+	// deployment in this namespace, so we can select it as a set of Ingress instances.
+	// As those labels are also generated as part of a HELM deployment, we can be "safe" they
+	// cover 95% of the cases
+	podLabel := make(map[string]string)
+	for k, v := range k8s.IngressPodDetails.Labels {
+		if k != "pod-template-hash" && k != "controller-revision-hash" && k != "pod-template-generation" {
+			podLabel[k] = v
+		}
+	}
+
 	pods, err := s.Client.CoreV1().Pods(k8s.IngressPodDetails.Namespace).List(context.TODO(), metav1.ListOptions{
-		LabelSelector: labels.SelectorFromSet(k8s.IngressPodDetails.Labels).String(),
+		LabelSelector: labels.SelectorFromSet(podLabel).String(),
 	})
 	if err != nil {
 		return false