Grafana dashboard: CoreDNS
Description: CoreDNS dashboard, focused on latency and cache-efficiency observability.  Includes query and response time-series stack charts.   Allows user to easily select both datasource and application (kube-dns, node-local-dns).


{
  "__inputs": [
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      "label": "Prometheus",
      "description": "Prometheus data",
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      "pluginId": "prometheus",
      "pluginName": "Prometheus"
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  "annotations": {
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        "builtIn": 1,
        "datasource": "-- Grafana --",
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        "hide": true,
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    ]
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  "editable": true,
  "gnetId": 12028,
  "graphTooltip": 0,
  "id": null,
  "iteration": 1586105143577,
  "links": [],
  "panels": [
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      "datasource": "${DS_PROMETHEUS}",
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        {
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        },
        {
          "expr": "histogram_quantile(0.5, sum(rate(coredns_dns_request_duration_seconds_bucket{k8s_app=\"$application\"}[5m])) by (le))",
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      ],
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      "title": "Query latency",
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    {
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      "dashLength": 10,
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      "fillGradient": 0,
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        "w": 12,
        "x": 12,
        "y": 0
      },
      "hiddenSeries": false,
      "id": 4,
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      "renderer": "flot",
      "seriesOverrides": [],
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      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "sum(rate(coredns_cache_hits_total{k8s_app=\"$application\"}[5m]))/sum(rate(coredns_dns_request_count_total{k8s_app=\"$application\"}[5m]))",
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      ],
      "thresholds": [],
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      "title": "Cache efficiency",
      "tooltip": {
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        "value_type": "individual"
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      "cards": {
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      "color": {
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        "colorScheme": "interpolateRdYlGn",
        "exponent": 0.5,
        "min": null,
        "mode": "opacity"
      },
      "dataFormat": "tsbuckets",
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      "gridPos": {
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      },
      "heatmap": {},
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      "highlightCards": true,
      "id": 11,
      "legend": {
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      "options": {},
      "reverseYBuckets": false,
      "targets": [
        {
          "expr": "sum(rate(coredns_dns_request_duration_seconds_bucket{k8s_app=\"$application\"}[5m])) by (le)",
          "format": "heatmap",
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          "refId": "A"
        }
      ],
      "timeFrom": null,
      "timeShift": null,
      "title": "Query latency, heatmap",
      "tooltip": {
        "show": true,
        "showHistogram": false
      },
      "type": "heatmap",
      "xAxis": {
        "show": true
      },
      "xBucketNumber": null,
      "xBucketSize": null,
      "yAxis": {
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        "show": true,
        "splitFactor": null
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      "yBucketBound": "auto",
      "yBucketNumber": null,
      "yBucketSize": null
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    {
      "aliasColors": {},
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      "dashLength": 10,
      "dashes": false,
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      "fillGradient": 0,
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        "w": 12,
        "x": 12,
        "y": 8
      },
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      "id": 7,
      "legend": {
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        "values": false
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      "lines": false,
      "linewidth": 1,
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      "options": {
        "dataLinks": []
      },
      "percentage": false,
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      "points": false,
      "renderer": "flot",
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      "stack": true,
      "steppedLine": false,
      "targets": [
        {
          "expr": "sum(rate(coredns_dns_request_count_total{k8s_app=\"$application\"}[5m])) by (proto)",
          "legendFormat": "{{proto}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
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      "timeRegions": [],
      "timeShift": null,
      "title": "Queries by protocol",
      "tooltip": {
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      },
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      "yaxes": [
        {
          "format": "short",
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          "min": "0",
          "show": true
        },
        {
          "format": "short",
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      "linewidth": 1,
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
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      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": true,
      "steppedLine": false,
      "targets": [
        {
          "expr": "sum(rate(coredns_dns_request_count_total{k8s_app=\"$application\"}[5m])) by (zone)",
          "legendFormat": "{{zone}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Queries by zone",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
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        "mode": "time",
        "name": null,
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        "values": []
      },
      "yaxes": [
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          "format": "short",
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          "min": "0",
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        {
          "format": "short",
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          "min": null,
          "show": true
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      ],
      "yaxis": {
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    },
    {
      "aliasColors": {},
      "bars": true,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
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        "w": 12,
        "x": 12,
        "y": 16
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      "id": 9,
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        "current": false,
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        "show": true,
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        "values": false
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      "linewidth": 1,
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      "options": {
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      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": true,
      "steppedLine": false,
      "targets": [
        {
          "expr": "sum(rate(coredns_dns_response_rcode_count_total{k8s_app=\"$application\"}[5m])) by (rcode)",
          "legendFormat": "{{rcode}}",
          "refId": "A"
        }
      ],
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      "timeRegions": [],
      "timeShift": null,
      "title": "Responses by type",
      "tooltip": {
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        "sort": 0,
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      },
      "type": "graph",
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        "name": null,
        "show": true,
        "values": []
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        {
          "format": "short",
          "label": "total qps",
          "logBase": 1,
          "max": null,
          "min": "0",
          "show": true
        },
        {
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      "aliasColors": {},
      "bars": true,
      "dashLength": 10,
      "dashes": false,
      "datasource": "$datasource",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
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        "w": 12,
        "x": 0,
        "y": 24
      },
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      "id": 8,
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        "dataLinks": []
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      "renderer": "flot",
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      "stack": true,
      "steppedLine": false,
      "targets": [
        {
          "expr": "sum(rate(coredns_dns_request_type_count_total{k8s_app=\"$application\",type!=\"other\"}[5m])) by (type)",
          "legendFormat": "{{type}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
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      "timeRegions": [],
      "timeShift": null,
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      },
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        {
          "format": "short",
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          "min": "0",
          "show": true
        },
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  ],
  "schemaVersion": 22,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": [
      {
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        "current": {},
        "datasource": "$datasource",
        "definition": "coredns_dns_request_count_total",
        "hide": 0,
        "includeAll": false,
        "label": null,
        "multi": false,
        "name": "application",
        "options": [],
        "query": "coredns_dns_request_count_total",
        "refresh": 1,
        "regex": "/.*k8s_app=\"([^\"]*).*/",
        "skipUrlSync": false,
        "sort": 1,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
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      },
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        "current": {
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          "text": "default",
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        "includeAll": false,
        "label": "datasource",
        "multi": false,
        "name": "datasource",
        "options": [],
        "query": "prometheus",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "type": "datasource"
      }
    ]
  },
  "time": {
    "from": "now-3h",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "5s",
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ]
  },
  "timezone": "",
  "title": "CoreDNS",
  "uid": "Yr1oUjuZz",
  "version": 14,
  "description": "CoreDNS dashboard, focused on latency and cache-efficiency observability.  Includes query and response time-series stack charts.   Allows user to easily select both datasource and application (kube-dns, node-local-dns)."
}