diff --git a/deploy/operator.yaml b/deploy/operator.yaml
index 6f4559c4..1d46c0dd 100644
--- a/deploy/operator.yaml
+++ b/deploy/operator.yaml
@@ -33,6 +33,8 @@ spec:
           env:
             - name: TEMPLATE_PATH
               value: /usr/local/bin/templates
+            - name: MONITORING_KEY
+              value: middleware
             - name: WATCH_NAMESPACE
               valueFrom:
                 fieldRef:
diff --git a/pkg/controller/applicationmonitoring/templateHelper.go b/pkg/controller/applicationmonitoring/templateHelper.go
index 59aa6db0..dc6d5083 100644
--- a/pkg/controller/applicationmonitoring/templateHelper.go
+++ b/pkg/controller/applicationmonitoring/templateHelper.go
@@ -51,6 +51,7 @@ type Parameters struct {
 	AlertManagerRouteName          string
 	GrafanaServiceMonitorName      string
 	PrometheusServiceMonitorName   string
+	MonitoringKey                  string
 }
 
 type TemplateHelper struct {
@@ -80,13 +81,19 @@ func newTemplateHelper(cr *applicationmonitoring.ApplicationMonitoring) *Templat
 		AlertManagerRouteName:          AlertManagerRouteName,
 		GrafanaServiceMonitorName:      GrafanaServiceMonitorName,
 		PrometheusServiceMonitorName:   PrometheusServiceMonitorName,
+		MonitoringKey:                  "middleware",
 	}
 
-	templatePath := os.Getenv("TEMPLATE_PATH")
-	if templatePath == "" {
+	templatePath, exists := os.LookupEnv("TEMPLATE_PATH")
+	if !exists {
 		templatePath = "./templates"
 	}
 
+	monitoringKey, exists := os.LookupEnv("MONITORING_KEY")
+	if exists {
+		param.MonitoringKey = monitoringKey
+	}
+
 	return &TemplateHelper{
 		Parameters:   param,
 		TemplatePath: templatePath,
diff --git a/templates/grafana.yaml b/templates/grafana.yaml
index d27fe04d..85ddda4f 100644
--- a/templates/grafana.yaml
+++ b/templates/grafana.yaml
@@ -5,3 +5,6 @@ metadata:
   namespace: {{ .Namespace }}
 spec:
   prometheusUrl: "http://prometheus-service:9090"
+  dashboardNamespaceSelector:
+    matchLabels:
+      monitoring-key: {{ .MonitoringKey }}