Reduce webhook log verbosity

Author: sbueringer

pkg/webhook/admission/http.go

@@ -93,7 +93,7 @@ func (wh *Webhook) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		wh.writeResponse(w, reviewResponse)
 		return
 	}
-	wh.getLogger(&req).V(1).Info("received request")
+	wh.getLogger(&req).V(4).Info("received request")
 
 	reviewResponse = wh.Handle(ctx, req)
 	wh.writeResponseTyped(w, reviewResponse, actualAdmRevGVK)
@@ -136,11 +136,11 @@ func (wh *Webhook) writeAdmissionResponse(w io.Writer, ar v1.AdmissionReview) {
 		}
 	} else {
 		res := ar.Response
-		if log := wh.getLogger(nil); log.V(1).Enabled() {
+		if log := wh.getLogger(nil); log.V(4).Enabled() {
 			if res.Result != nil {
 				log = log.WithValues("code", res.Result.Code, "reason", res.Result.Reason, "message", res.Result.Message)
 			}
-			log.V(1).Info("wrote response", "requestID", res.UID, "allowed", res.Allowed)
+			log.V(4).Info("wrote response", "requestID", res.UID, "allowed", res.Allowed)
 		}
 	}
 }

pkg/webhook/authentication/http.go

@@ -89,12 +89,12 @@ func (wh *Webhook) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	ar.SetGroupVersionKind(authenticationv1.SchemeGroupVersion.WithKind("TokenReview"))
 	_, actualTokRevGVK, err := authenticationCodecs.UniversalDeserializer().Decode(body, nil, &ar)
 	if err != nil {
-		wh.getLogger(&req).Error(err, "unable to decode the request")
+		wh.getLogger(nil).Error(err, "unable to decode the request")
 		reviewResponse = Errored(err)
 		wh.writeResponse(w, reviewResponse)
 		return
 	}
-	wh.getLogger(&req).V(1).Info("received request")
+	wh.getLogger(&req).V(4).Info("received request")
 
 	if req.Spec.Token == "" {
 		err = errors.New("token is empty")
@@ -135,9 +135,7 @@ func (wh *Webhook) writeTokenResponse(w io.Writer, ar authenticationv1.TokenRevi
 		wh.writeResponse(w, Errored(err))
 	}
 	res := ar
-	if wh.getLogger(nil).V(1).Enabled() {
-		wh.getLogger(nil).V(1).Info("wrote response", "requestID", res.UID, "authenticated", res.Status.Authenticated)
-	}
+	wh.getLogger(nil).V(4).Info("wrote response", "requestID", res.UID, "authenticated", res.Status.Authenticated)
 }
 
 // unversionedTokenReview is used to decode both v1 and v1beta1 TokenReview types.