Grafana dashboard: MongoDB
Description: MongoDB Prometheus Exporter Dashboard. 
Works well with https://github.com/dcu/mongodb_exporter

If you have the node_exporter running on the mongo instance, you will also get some useful alert panels related to disk io and cpu.


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              "expr": "sum(mongodb_replset_member_health{instance=~\"$env\"})",
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              "refId": "B",
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            }
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              "max": null,
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              "show": true
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          "dashes": false,
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          "description": "See which node is currently acting as the primary, secondary, ...",
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              "expr": "mongodb_instance_uptime_seconds{instance=~\"$env\"}",
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              }
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      "showTitle": false,
      "title": "Dashboard Row",
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    }
  ],
  "schemaVersion": 14,
  "style": "dark",
  "tags": [
    "prometheus"
  ],
  "templating": {
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      {
        "allValue": null,
        "current": {},
        "datasource": "${DS_PROMETHEUS}",
        "hide": 0,
        "includeAll": true,
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        "multi": true,
        "name": "env",
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        "query": "label_values(mongodb_connections, instance)",
        "refresh": 1,
        "regex": "",
        "sort": 1,
        "tagValuesQuery": "/.*-(.*?)-.*/",
        "tags": [],
        "tagsQuery": "label_values(mongodb_connections, instance)",
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      },
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            "selected": false,
            "text": "6h",
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            "selected": false,
            "text": "12h",
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            "selected": false,
            "text": "1d",
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            "selected": false,
            "text": "7d",
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            "selected": false,
            "text": "14d",
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            "selected": false,
            "text": "30d",
            "value": "30d"
          }
        ],
        "query": "1m,10m,30m,1h,6h,12h,1d,7d,14d,30d",
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      "1h",
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}