Add error ratio

roles/prometheus/files/grafana/dashboards/http.json

@@ -14,9 +14,9 @@
   },
   "editable": true,
   "gnetId": null,
-  "graphTooltip": 0,
-  "id": null,
-  "iteration": 1560210581737,
+  "graphTooltip": 1,
+  "id": 2,
+  "iteration": 1560275101593,
   "links": [],
   "panels": [
     {
@@ -281,13 +281,99 @@
       "dashLength": 10,
       "dashes": false,
       "datasource": "localhost",
-      "fill": 0,
+      "fill": 1,
       "gridPos": {
         "h": 6,
         "w": 12,
         "x": 12,
         "y": 6
       },
+      "id": 9,
+      "legend": {
+        "avg": false,
+        "current": false,
+        "max": false,
+        "min": false,
+        "show": true,
+        "total": false,
+        "values": false
+      },
+      "lines": true,
+      "linewidth": 1,
+      "links": [],
+      "nullPointMode": "null",
+      "percentage": false,
+      "pointradius": 5,
+      "points": false,
+      "renderer": "flot",
+      "seriesOverrides": [],
+      "spaceLength": 10,
+      "stack": false,
+      "steppedLine": false,
+      "targets": [
+        {
+          "expr": "topk(10, global:nginx_http_requests_errs:rate5m{vhost=~\"^$vhost$\"} / global:nginx_http_requests_total:rate5m{vhost=~\"^$vhost$\"})",
+          "format": "time_series",
+          "interval": "",
+          "intervalFactor": 1,
+          "legendFormat": "{{vhost}}",
+          "refId": "A"
+        }
+      ],
+      "thresholds": [],
+      "timeFrom": null,
+      "timeRegions": [],
+      "timeShift": null,
+      "title": "Error percentage",
+      "tooltip": {
+        "shared": true,
+        "sort": 0,
+        "value_type": "individual"
+      },
+      "type": "graph",
+      "xaxis": {
+        "buckets": null,
+        "mode": "time",
+        "name": null,
+        "show": true,
+        "values": []
+      },
+      "yaxes": [
+        {
+          "format": "percentunit",
+          "label": null,
+          "logBase": 1,
+          "max": null,
+          "min": null,
+          "show": true
+        },
+        {
+          "format": "short",
+          "label": null,
+          "logBase": 1,
+          "max": null,
+          "min": null,
+          "show": true
+        }
+      ],
+      "yaxis": {
+        "align": false,
+        "alignLevel": null
+      }
+    },
+    {
+      "aliasColors": {},
+      "bars": false,
+      "dashLength": 10,
+      "dashes": false,
+      "datasource": "localhost",
+      "fill": 0,
+      "gridPos": {
+        "h": 6,
+        "w": 12,
+        "x": 0,
+        "y": 12
+      },
       "id": 8,
       "legend": {
         "avg": false,
@@ -384,7 +470,11 @@
     "list": [
       {
         "allValue": ".*",
-        "current": {},
+        "current": {
+          "tags": [],
+          "text": "autistici.org:443",
+          "value": "autistici.org:443"
+        },
         "datasource": "localhost",
         "definition": "",
         "hide": 0,
@@ -407,7 +497,7 @@
     ]
   },
   "time": {
-    "from": "now-6h",
+    "from": "now-3h",
     "to": "now"
   },
   "timepicker": {
@@ -438,5 +528,5 @@
   "timezone": "",
   "title": "HTTP",
   "uid": "xCSUMFnmz",
-  "version": 1
-}
+  "version": 4
+}
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