Add prometheus main dashboard

Change-Id: I9b7262b6ba1631348c447a4dcdb6bf6fd6b079a4
diff --git a/influxdb/meta/grafana.yml b/influxdb/meta/grafana.yml
index 509368b..0dead01 100644
--- a/influxdb/meta/grafana.yml
+++ b/influxdb/meta/grafana.yml
@@ -10,4 +10,19 @@
   influxdb_relay_prometheus:
     datasource: prometheus
     format: json
-    template: influxdb/files/grafana_dashboards/influxdb_relay_prometheus.json
\ No newline at end of file
+    template: influxdb/files/grafana_dashboards/influxdb_relay_prometheus.json
+  main_prometheus:
+    datasource: prometheus
+    row:
+      ost-middleware:
+        title: Middleware
+        panel:
+          influxdb:
+            title: InfluxDB
+            links:
+            - dashboard: InfluxDB
+              title: InfluxDB
+              type: dashboard
+            target:
+              cluster_status:
+                expr: avg(influxdb_up) by (name)
\ No newline at end of file