Grafana dashboard: Prometheus AlertManager
Description: The dashborad using Prometheus AlertManager datasource 0.0.6 version.

With this example, can use Prometheus AlertManager datasource easily.

{
  "__inputs": [
    {
      "name": "DS_PROMETHEUS_ALERTMANAGER",
      "label": "Prometheus AlertManager",
      "description": "This datasource lets you to use the Alertmanager's API of Prometheus to create dashboards in Grafana.",
      "type": "datasource",
      "pluginId": "camptocamp-prometheus-alertmanager-datasource",
      "pluginName": "Prometheus AlertManager"
    }
  ],
  "__requires": [
    {
      "type": "datasource",
      "id": "camptocamp-prometheus-alertmanager-datasource",
      "name": "Prometheus AlertManager",
      "version": "0.0.6"
    },
    {
      "type": "grafana",
      "id": "grafana",
      "name": "Grafana",
      "version": "5.2.4"
    },
    {
      "type": "panel",
      "id": "singlestat",
      "name": "Singlestat",
      "version": "5.0.0"
    },
    {
      "type": "panel",
      "id": "table",
      "name": "Table",
      "version": "5.0.0"
    }
  ],
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "description": "The dashborad using Prometheus AlertManager datasource 0.0.6 version.",
  "editable": true,
  "gnetId": 8010,
  "graphTooltip": 0,
  "id": null,
  "links": [],
  "panels": [
    {
      "cacheTimeout": null,
      "colorBackground": true,
      "colorValue": false,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": "${DS_PROMETHEUS_ALERTMANAGER}",
      "decimals": null,
      "description": "",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 8,
        "w": 6,
        "x": 0,
        "y": 0
      },
      "id": 8,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false
      },
      "tableColumn": "",
      "targets": [
        {
          "annotations": false,
          "expr": "",
          "labelSelector": "*",
          "legendFormat": "",
          "refId": "A",
          "target": "Query",
          "type": "single"
        }
      ],
      "thresholds": "1,5",
      "title": "All alerts",
      "type": "singlestat",
      "valueFontSize": "80%",
      "valueMaps": [
        {
          "op": "=",
          "text": "0",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": true,
      "colorValue": false,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": "${DS_PROMETHEUS_ALERTMANAGER}",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 8,
        "w": 6,
        "x": 6,
        "y": 0
      },
      "id": 2,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": true,
        "lineColor": "rgb(31, 120, 193)",
        "show": false
      },
      "tableColumn": "Message",
      "targets": [
        {
          "annotations": false,
          "expr": "alertname=\"NodeDown\"",
          "labelSelector": "*",
          "legendFormat": "",
          "refId": "A",
          "target": "Query",
          "type": "single"
        }
      ],
      "thresholds": "0,0",
      "title": "Down Nodes",
      "transparent": false,
      "type": "singlestat",
      "valueFontSize": "80%",
      "valueMaps": [
        {
          "op": "=",
          "text": "0",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": true,
      "colorValue": false,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": "${DS_PROMETHEUS_ALERTMANAGER}",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 8,
        "w": 6,
        "x": 12,
        "y": 0
      },
      "id": 10,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false
      },
      "tableColumn": "",
      "targets": [
        {
          "annotations": false,
          "expr": "alertname=\"NodeMemoryUsage\"",
          "labelSelector": "*",
          "legendFormat": "",
          "refId": "A",
          "target": "Query",
          "type": "timeserie"
        }
      ],
      "thresholds": "1,5",
      "title": "High Memory Nodes",
      "type": "singlestat",
      "valueFontSize": "80%",
      "valueMaps": [
        {
          "op": "=",
          "text": "0",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "colorBackground": true,
      "colorValue": false,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
        "#d44a3a"
      ],
      "datasource": "${DS_PROMETHEUS_ALERTMANAGER}",
      "format": "none",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": false,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 8,
        "w": 6,
        "x": 18,
        "y": 0
      },
      "id": 12,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false
      },
      "tableColumn": "",
      "targets": [
        {
          "annotations": false,
          "expr": "alertname=\"NodeCPUUsage\"",
          "labelSelector": "*",
          "legendFormat": "",
          "refId": "A",
          "target": "Query",
          "type": "timeserie"
        }
      ],
      "thresholds": "1,5",
      "title": "High CPU Node",
      "type": "singlestat",
      "valueFontSize": "80%",
      "valueMaps": [
        {
          "op": "=",
          "text": "0",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "columns": [],
      "datasource": "${DS_PROMETHEUS_ALERTMANAGER}",
      "fontSize": "100%",
      "gridPos": {
        "h": 7,
        "w": 24,
        "x": 0,
        "y": 8
      },
      "id": 4,
      "links": [],
      "pageSize": null,
      "scroll": true,
      "showHeader": true,
      "sort": {
        "col": 0,
        "desc": true
      },
      "styles": [
        {
          "alias": "Time",
          "dateFormat": "YYYY-MM-DD HH:mm:ss",
          "pattern": "Time",
          "type": "date"
        },
        {
          "alias": "",
          "colorMode": "row",
          "colors": [
            "rgba(50, 172, 45, 0.97)",
            "rgba(237, 129, 40, 0.89)",
            "rgba(245, 54, 54, 0.9)"
          ],
          "dateFormat": "YYYY-MM-DD HH:mm:ss",
          "decimals": 2,
          "mappingType": 1,
          "pattern": "severity",
          "thresholds": [
            "1",
            "2"
          ],
          "type": "string",
          "unit": "short",
          "valueMaps": [
            {
              "text": "Critical",
              "value": "3"
            },
            {
              "text": "Warning",
              "value": "2"
            },
            {
              "text": "Info",
              "value": "1"
            }
          ]
        },
        {
          "alias": "",
          "colorMode": "row",
          "colors": [
            "rgba(245, 54, 54, 0.9)",
            "rgba(237, 129, 40, 0.89)",
            "rgba(50, 172, 45, 0.97)"
          ],
          "decimals": 2,
          "pattern": "/.*/",
          "thresholds": [
            "0"
          ],
          "type": "number",
          "unit": "short"
        }
      ],
      "targets": [
        {
          "annotations": true,
          "expr": "",
          "hide": false,
          "labelSelector": "*",
          "legendFormat": "{{ summary }}",
          "refId": "A",
          "target": "Query",
          "type": "table"
        },
        {
          "annotations": false,
          "expr": "",
          "labelSelector": "*",
          "legendFormat": "{{ instance }}",
          "refId": "B",
          "target": "Query",
          "type": "table"
        }
      ],
      "title": "All Alerts Info",
      "transform": "table",
      "type": "table"
    }
  ],
  "refresh": false,
  "schemaVersion": 16,
  "style": "dark",
  "tags": [
    "0.0.1"
  ],
  "templating": {
    "list": []
  },
  "time": {
    "from": "now-6h",
    "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": "Prometheus AlertManager",
  "uid": "WojOgXTmk",
  "version": 38
}