Grafana dashboard: nginx
Description: https://github.com/nginxinc/nginx-prometheus-exporter

docker run -d --name nginx-exporter --restart=unless-stopped -p 9113:9113 nginx/nginx-prometheus-exporter:0.4.2 -nginx.scrape-uri http://172.17.10.83:8082/stub_status  

{
  "__inputs": [
    {
      "name": "DS_DS_PROMETHEUS",
      "label": "DS_PROMETHEUS",
      "description": "",
      "type": "datasource",
      "pluginId": "prometheus",
      "pluginName": "Prometheus"
    }
  ],
  "__requires": [
    {
      "type": "grafana",
      "id": "grafana",
      "name": "Grafana",
      "version": "6.3.5"
    },
    {
      "type": "panel",
      "id": "graph",
      "name": "Graph",
      "version": ""
    },
    {
      "type": "datasource",
      "id": "prometheus",
      "name": "Prometheus",
      "version": "1.0.0"
    },
    {
      "type": "panel",
      "id": "singlestat",
      "name": "Singlestat",
      "version": ""
    }
  ],
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "description": "https://github.com/nginxinc/nginx-prometheus-exporter",
  "editable": true,
  "gnetId": 11280,
  "graphTooltip": 1,
  "id": null,
  "iteration": 1574766625935,
  "links": [
    {
      "icon": "external link",
      "tags": [],
      "targetBlank": true,
      "title": "http://$instance/metrics",
      "type": "link",
      "url": "http://$instance/metrics"
    }
  ],
  "panels": [
    {
      "collapsed": false,
      "datasource": "${DS_DS_PROMETHEUS}",
      "gridPos": {
        "h": 1,
        "w": 24,
        "x": 0,
        "y": 0
      },
      "id": 4,
      "panels": [],
      "title": "Status",
      "type": "row"
    },
    {
      "cacheTimeout": null,
      "colorBackground": true,
      "colorPostfix": false,
      "colorPrefix": false,
      "colorValue": false,
      "colors": [
        "#E02F44",
        "#FF9830",
        "#299c46"
      ],
      "datasource": "${DS_DS_PROMETHEUS}",
      "decimals": null,
      "description": "",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 3,
        "w": 24,
        "x": 0,
        "y": 1
      },
      "id": 8,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "options": {},
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "repeat": "instance",
      "repeatDirection": "h",
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false
      },
      "tableColumn": "",
      "targets": [
        {
          "expr": "nginx_up{project=~\"$project\",instance=~\"$instance\"}",
          "format": "time_series",
          "instant": false,
          "intervalFactor": 1,
          "refId": "A"
        }
      ],
      "thresholds": "1,1",
      "timeFrom": null,
      "timeShift": null,
      "title": "NGINX Status",
      "type": "singlestat",
      "valueFontSize": "100%",
      "valueMaps": [
        {
          "op": "=",
          "text": "Down",
          "value": "0"
        },
        {
          "op": "=",
          "text": "Up",
          "value": "1"
        }
      ],
      "valueName": "current"
    },
    {
      "collapsed": false,
      "datasource": "${DS_DS_PROMETHEUS}",
      "gridPos": {
        "h": 1,
        "w": 24,
        "x": 0,
        "y": 4
      },
      "id": 6,
      "panels": [],
      "title": "Metrics",
      "type": "row"
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "${DS_DS_PROMETHEUS}",
      "decimals": null,
      "description": "",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 10,
        "w": 12,
        "x": 0,
        "y": 5
      },
      "id": 10,
      "legend": {
        "alignAsTable": false,
        "avg": false,
        "current": false,
        "hideEmpty": false,
        "max": false,
        "min": false,
        "rightSide": false,
        "show": true,
        "total": false,
        "values": false
      },
      "lines": true,
      "linewidth": 1,
      "links": [],
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "irate(nginx_connections_accepted{project=~\"$project\",instance=~\"$instance\"}[5m])",
          "format": "time_series",
          "instant": false,
          "intervalFactor": 1,
          "legendFormat": "accepted",
          "refId": "A"
        },
        {
          "expr": "irate(nginx_connections_handled{project=~\"$project\",instance=~\"$instance\"}[5m])",
          "format": "time_series",
          "instant": false,
          "intervalFactor": 1,
          "legendFormat": "handled",
          "refId": "B"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Processed connections",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "decimals": 1,
          "format": "short",
          "label": "Connections (rate)",
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": "",
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "${DS_DS_PROMETHEUS}",
      "decimals": 0,
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 10,
        "w": 12,
        "x": 12,
        "y": 5
      },
      "id": 12,
      "legend": {
        "alignAsTable": false,
        "avg": false,
        "current": false,
        "max": false,
        "min": false,
        "rightSide": false,
        "show": true,
        "total": false,
        "values": false
      },
      "lines": true,
      "linewidth": 1,
      "links": [],
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "nginx_connections_active{project=~\"$project\",instance=~\"$instance\"}",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "active",
          "refId": "A"
        },
        {
          "expr": "nginx_connections_reading{project=~\"$project\",instance=~\"$instance\"}",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "reading",
          "refId": "B"
        },
        {
          "expr": "nginx_connections_waiting{project=~\"$project\",instance=~\"$instance\"}",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "waiting",
          "refId": "C"
        },
        {
          "expr": "nginx_connections_writing{project=~\"$project\",instance=~\"$instance\"}",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "writing",
          "refId": "D"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Active Connections",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "decimals": 0,
          "format": "short",
          "label": "Connections",
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "${DS_DS_PROMETHEUS}",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 8,
        "w": 24,
        "x": 0,
        "y": 15
      },
      "id": 15,
      "legend": {
        "avg": false,
        "current": false,
        "max": false,
        "min": false,
        "show": true,
        "total": false,
        "values": false
      },
      "lines": true,
      "linewidth": 1,
      "links": [],
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "irate(nginx_http_requests_total{project=~\"$project\",instance=~\"$instance\"}[5m])",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "total requests",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Total requests",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "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
      }
    }
  ],
  "refresh": "5s",
  "schemaVersion": 19,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": [
      {
        "allValue": null,
        "current": {},
        "datasource": "${DS_DS_PROMETHEUS}",
        "definition": "label_values(nginx_up, project)",
        "hide": 0,
        "includeAll": false,
        "label": "项目",
        "multi": false,
        "name": "project",
        "options": [],
        "query": "label_values(nginx_up, project)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 1,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {},
        "datasource": "${DS_DS_PROMETHEUS}",
        "definition": "label_values(nginx_up{project=~\"$project\"}, server)",
        "hide": 0,
        "includeAll": false,
        "label": "主机",
        "multi": false,
        "name": "server",
        "options": [],
        "query": "label_values(nginx_up{project=~\"$project\"}, server)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 1,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {},
        "datasource": "${DS_DS_PROMETHEUS}",
        "definition": "label_values(nginx_up{project=~\"$project\",server=~\"$server\"}, instance)",
        "hide": 2,
        "includeAll": false,
        "label": "实例",
        "multi": false,
        "name": "instance",
        "options": [],
        "query": "label_values(nginx_up{project=~\"$project\",server=~\"$server\"}, instance)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 1,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      }
    ]
  },
  "time": {
    "from": "now-1h",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "5s",
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ],
    "time_options": [
      "5m",
      "15m",
      "1h",
      "6h",
      "12h",
      "24h",
      "2d",
      "7d",
      "30d"
    ]
  },
  "timezone": "",
  "title": "nginx",
  "uid": "nginx",
  "version": 1
}