Fix: Clear metrics also on stop and edit

server/model/monitor.js

@@ -466,11 +466,16 @@ class Monitor extends BeanModel {
     stop() {
         clearTimeout(this.heartbeatInterval);
         this.isStop = true;
+
+        this.prometheus().remove();
     }
 
     onDelete() {
-        let prometheus = new Prometheus(this);
-        prometheus.remove();
+        this.prometheus().remove();
+    }
+
+    prometheus() {
+        return new Prometheus(this);
     }
 
     /**