Merge pull request #587 from application-stacks/kirby-topology-annota…

…tions

Add service annotations for topology aware routing

utils/utils.go

@@ -196,6 +196,7 @@ func ErrorIsNoMatchesForKind(err error, kind string, version string) bool {
 func CustomizeService(svc *corev1.Service, ba common.BaseComponent) {
 	obj := ba.(metav1.Object)
 	svc.Labels = ba.GetLabels()
+	CustomizeServiceAnnotations(svc)
 	svc.Annotations = MergeMaps(svc.Annotations, ba.GetAnnotations())
 
 	if len(svc.Spec.Ports) == 0 {
@@ -268,6 +269,14 @@ func CustomizeService(svc *corev1.Service, ba common.BaseComponent) {
 	}
 }
 
+func CustomizeServiceAnnotations(svc *corev1.Service) {
+	// Enable topology aware hints/routing
+	serviceAnnotations := make(map[string]string)
+	serviceAnnotations["service.kubernetes.io/topology-aware-hints"] = "Auto" // Topology Aware Hints (< k8s version 1.27)
+	serviceAnnotations["service.kubernetes.io/topology-mode"] = "Auto"        // Topology Aware Routing (>= k8s version 1.27)
+	svc.Annotations = MergeMaps(svc.Annotations, serviceAnnotations)
+}
+
 func CustomizeProbes(container *corev1.Container, ba common.BaseComponent) {
 	probesConfig := ba.GetProbes()