diff --git a/f2soperator/operation/operator/balancer.go b/f2soperator/operation/operator/balancer.go
index 1c0d2ab..41bb7af 100644
--- a/f2soperator/operation/operator/balancer.go
+++ b/f2soperator/operation/operator/balancer.go
@@ -130,10 +130,12 @@ func scaleDeployments() {
 	for _, function := range functions.Items {
 		var resultScale int
 		currentAvailableReplicas, availableReplicasErr := prometheus.ReadCurrentPrometheusMetricValue(&configuration.ActiveConfiguration, fmt.Sprintf("kube_deployment_status_replicas_available{functionname=\"%s\"}", function.Name))
-		requiredContainers, requiredContainersErr := prometheus.ReadCurrentPrometheusMetricValue(&configuration.ActiveConfiguration, fmt.Sprintf("job:function_containers_required:containers{functionname=\"%s\"}", function.Name))
-		if availableReplicasErr != nil || requiredContainersErr != nil {
-			// no invocations / metrics => scale to minimum
-			logging.Error("there was an error when trying to read metric [kube_deployment_status_replicas_available] or [job:function_containers_required:containers]. setting result scale to 0")
+		requiredContainers, requiredContainersErr := prometheus.ReadCurrentPrometheusMetricValue(&configuration.ActiveConfiguration, fmt.Sprintf("job:function_containers_required:containers{functionname=\"%s\"} or vector(0)", function.Name))
+		if availableReplicasErr != nil {
+			logging.Error("there was an error when trying to read metric [kube_deployment_status_replicas_available]. setting result-scale to 0")
+			resultScale = 0
+		} else if requiredContainersErr != nil {
+			logging.Error("there was an error when trying to read metric [job:function_containers_required:containers]. setting result-scale to 0")
 			resultScale = 0
 		} else {
 			resultScale = int(math.Ceil(requiredContainers))
diff --git a/f2soperator/state/configuration/api/clientset/v1alpha1/clientset.go b/f2soperator/state/configuration/api/clientset/v1alpha1/clientset.go
index 873cdd1..ccd6838 100644
--- a/f2soperator/state/configuration/api/clientset/v1alpha1/clientset.go
+++ b/f2soperator/state/configuration/api/clientset/v1alpha1/clientset.go
@@ -27,7 +27,7 @@ func NewForConfig(c *rest.Config, scheme *runtime.Scheme) (*V1Alpha1Client, erro
 	config.NegotiatedSerializer = serializer.NewCodecFactory(scheme)
 	config.UserAgent = rest.DefaultKubernetesUserAgent()
 
-	logging.Info("Rest Client Group Version:", fmt.Sprintf("%s", config.GroupVersion))
+	logging.Debug("Rest Client Group Version:", fmt.Sprintf("%s", config.GroupVersion))
 
 	client, err := rest.RESTClientFor(&config)
 	if err != nil {
diff --git a/f2soperator/state/configuration/api/clientset/v1alpha1/functions.go b/f2soperator/state/configuration/api/clientset/v1alpha1/functions.go
index 09d0b1e..ab3d28b 100644
--- a/f2soperator/state/configuration/api/clientset/v1alpha1/functions.go
+++ b/f2soperator/state/configuration/api/clientset/v1alpha1/functions.go
@@ -27,7 +27,7 @@ type functionClient struct {
 
 func (c *functionClient) List(opts metav1.ListOptions) (*v1alpha1.FunctionList, error) {
 	result := v1alpha1.FunctionList{}
-	logging.Info("get function list for namespace", c.ns)
+	logging.Info(fmt.Sprintf("get function list for namespace %s", c.ns))
 	ctx := context.TODO()
 	err := c.restClient.
 		Get().
@@ -36,7 +36,7 @@ func (c *functionClient) List(opts metav1.ListOptions) (*v1alpha1.FunctionList,
 		//VersionedParams(&opts, scheme.ParameterCodec).
 		Do(ctx).
 		Into(&result)
-	logging.Error(fmt.Sprintf("%s", err))
+	logging.Error(fmt.Sprintf("could not get function list for namespace %s: %s", c.ns, err.Error()))
 	return &result, err
 }
 
@@ -104,6 +104,6 @@ func (c *functionClient) Delete(uid string, opts metav1.DeleteOptions) error {
 		}
 	}
 
-	logging.Error(fmt.Sprint("function could not be found"))
+	logging.Error(fmt.Sprint("function with uid %s could not be found", uid))
 	return fmt.Errorf("function could not be found")
 }
diff --git a/helm/templates/grafana/grafana-configmap.yaml b/helm/templates/grafana/grafana-configmap.yaml
new file mode 100644
index 0000000..83fe683
--- /dev/null
+++ b/helm/templates/grafana/grafana-configmap.yaml
@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: grafana-config
+  namespace: f2s
+data:
+  f2s-grafana-config.ini: |
+    [auth.anonymous]
+    enabled = true
diff --git a/helm/templates/grafana/grafana-deployment.yaml b/helm/templates/grafana/grafana-deployment.yaml
index f762e5b..f01bdef 100644
--- a/helm/templates/grafana/grafana-deployment.yaml
+++ b/helm/templates/grafana/grafana-deployment.yaml
@@ -33,7 +33,14 @@ spec:
             - name: grafana-provisioning-dashboards
               mountPath: /var/lib/grafana/provisioning/dashboards
               readOnly: true
+            - name: grafana-config
+              mountPath: /etc/grafana/custom.ini
+              subPath: f2s-grafana-config.ini
+              readOnly: true
       volumes:
+        - name: grafana-config
+          configMap:
+            name: grafana-config
         - name: grafana-storage
           emptyDir: {}
         - name: grafana-provisioning-datasources