fix(controllers) disable more IngressClass lookups

CHANGELOG.md

@@ -64,6 +64,9 @@
 
 - Added `mtls-auth` to the admission webhook supported credential types list.
  [#2739](https:/Kong/kubernetes-ingress-controller/pull/2739)
+- Disabled additional IngressClass lookups in other reconcilers when the
+ IngressClass reconciler is disabled.
+ [#2724](https:/Kong/kubernetes-ingress-controller/pull/2724)
 
 ## [2.5.0]
 

hack/generators/controllers/networking/main.go

@@ -581,12 +581,14 @@ func (r *{{.PackageAlias}}{{.Kind}}Reconciler) Reconcile(ctx context.Context, re
  }
 {{if .AcceptsIngressClassNameAnnotation}}
  class := new(netv1.IngressClass)
- if err := r.Get(ctx, types.NamespacedName{Name: r.IngressClassName}, class); err != nil {
- // we log this without taking action to support legacy configurations that only set ingressClassName or
- // used the class annotation and did not create a corresponding IngressClass. We only need this to determine
- // if the IngressClass is default or to configure default settings, and can assume no/no additional defaults
- // if none exists.
- log.V(util.DebugLevel).Info("could not retrieve IngressClass", "ingressclass", r.IngressClassName)
+ if !r.DisableIngressClassLookups {
+ if err := r.Get(ctx, types.NamespacedName{Name: r.IngressClassName}, class); err != nil {
+ // we log this without taking action to support legacy configurations that only set ingressClassName or
+ // used the class annotation and did not create a corresponding IngressClass. We only need this to determine
+ // if the IngressClass is default or to configure default settings, and can assume no/no additional defaults
+ // if none exists.
+ log.V(util.DebugLevel).Info("could not retrieve IngressClass", "ingressclass", r.IngressClassName)
+ }
  }
  // if the object is not configured with our ingress.class, then we need to ensure it's removed from the cache
  if !ctrlutils.MatchesIngressClass(obj, r.IngressClassName, ctrlutils.IsDefaultIngressClass(class)) {