fix per-stack hostname generation logic

Author: demonCoder95

pkg/core/stack_resources.go

@@ -327,14 +327,17 @@ func (sc *StackContainer) stackHostnames(
 
 	// Old-style autogenerated hostnames
 	for _, host := range spec.GetHosts() {
-		if strings.HasSuffix(host, sc.perStackDomain) {
-			result.Insert(fmt.Sprintf("%s.%s", sc.Name(), sc.perStackDomain))
-		} else {
-			log.Debugf(
-				"Ingress host: %s suffix did not match cluster-domain %s",
-				host,
-				sc.perStackDomain,
-			)
+		for _, domain := range sc.clusterDomains {
+			if strings.HasSuffix(host, domain) {
+				// generate the per-stack hostname using the per-stack domain suffix
+				result.Insert(fmt.Sprintf("%s.%s", sc.Name(), sc.perStackDomain))
+			} else {
+				log.Debugf(
+					"Ingress host: %s suffix did not match cluster-domain %s",
+					host,
+					sc.perStackDomain,
+				)
+			}
 		}
 	}
 	return result.List(), nil

pkg/core/types.go

@@ -89,6 +89,7 @@ type StackContainer struct {
 	// Fields from the parent stackset
 	stacksetName   string
 	scaledownTTL   time.Duration
+	clusterDomains []string
 	perStackDomain string
 
 	// Ingress annotations to synchronize
@@ -354,6 +355,7 @@ func (ssc *StackSetContainer) UpdateFromResources() error {
 		sc.syncAnnotationsInRouteGroup = syncAnnotationsInRouteGroup
 		sc.backendPort = backendPort
 		sc.scaledownTTL = scaledownTTL
+		sc.clusterDomains = ssc.clusterDomains
 		sc.perStackDomain = ssc.perStackDomain
 		err := sc.updateStackResources()
 		if err != nil {