Grafana dashboard: 2MySQL  Simple Dashboard 4 MariaDB
Description: My MySQL simple dashboard

I know... it's just an other MySQL dashboard! It is the same of https://grafana.com/grafana/dashboards/7991
but works well with MariaDB.
It doesn't need any collection tool since it uses a simple stored routine scheduled by MySQL/MariaDB itself available here: https://github.com/meob/my2Collector

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      "name": "DS_MYMYSQL",
      "label": "MyMySQL",
      "description": "",
      "type": "datasource",
      "pluginId": "mysql",
      "pluginName": "MySQL"
    }
  ],
  "__requires": [
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      "type": "grafana",
      "id": "grafana",
      "name": "Grafana",
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    },
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      "type": "panel",
      "id": "graph",
      "name": "Graph",
      "version": ""
    },
    {
      "type": "panel",
      "id": "heatmap",
      "name": "Heatmap",
      "version": ""
    },
    {
      "type": "datasource",
      "id": "mysql",
      "name": "MySQL",
      "version": "1.0.0"
    },
    {
      "type": "panel",
      "id": "singlestat",
      "name": "Singlestat",
      "version": ""
    },
    {
      "type": "panel",
      "id": "text",
      "name": "Text",
      "version": ""
    }
  ],
  "annotations": {
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        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
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  "editable": true,
  "gnetId": 11679,
  "graphTooltip": 1,
  "id": null,
  "iteration": 1582357086589,
  "links": [
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      "icon": "external link",
      "tags": [
        "MyMySQL"
      ],
      "type": "dashboards"
    },
    {
      "icon": "external link",
      "includeVars": false,
      "tags": [],
      "targetBlank": true,
      "title": "Meo's Site",
      "type": "link",
      "url": "https://www.xenialab.it/meo/web/index5.htm#my"
    }
  ],
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        "w": 20,
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        "y": 0
      },
      "id": 32,
      "links": [],
      "mode": "html",
      "options": {},
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          "group": [],
          "metricColumn": "none",
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          "timeColumnType": "timestamp",
          "where": [
            {
              "name": "$__timeFilter",
              "params": [],
              "type": "macro"
            }
          ]
        }
      ],
      "title": "Connection Info",
      "transparent": true,
      "type": "text"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": false,
      "colors": [
        "#299c46",
        "rgba(237, 129, 40, 0.89)",
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        "thresholdMarkers": true
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        "show": true
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        {
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            {
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      ],
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        {
          "op": "=",
          "text": "N/A",
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        "Aborted_clients-d": "#c15c17",
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        "SLOW_QUERIES-d": "#cca300",
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        "Threads_connected": "#64b0c8"
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        "x": 0,
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        },
        {
          "alias": "ABORTED_CONNECTS",
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      "steppedLine": false,
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        {
          "alias": "",
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            {
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              "type": "macro"
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        },
        {
          "alias": "",
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          "metricColumn": "none",
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              "params": [],
              "type": "macro"
            }
          ]
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          "fromDayOfWeek": 6,
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        }
      ],
      "timeShift": null,
      "title": "Threads & Errors",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
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      "xaxis": {
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        "name": null,
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        "x": 10,
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      },
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        "values": false
      },
      "lines": true,
      "linewidth": 3,
      "links": [],
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        "dataLinks": []
      },
      "paceLength": 10,
      "percentage": false,
      "pointradius": 5,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [
        {
          "alias": "SIZEDB.TOTAL",
          "yaxis": 2
        }
      ],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "alias": "",
          "format": "time_series",
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          "rawQuery": true,
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                "params": [
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          "timeColumn": "time",
          "where": [
            {
              "name": "$__timeFilter",
              "params": [],
              "type": "macro"
            }
          ]
        }
      ],
      "thresholds": [],
      "timeFrom": "60d",
      "timeRegions": [
        {
          "colorMode": "gray",
          "fill": true,
          "fromDayOfWeek": 6,
          "line": false,
          "op": "time",
          "toDayOfWeek": 7
        }
      ],
      "timeShift": null,
      "title": "Space usage",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
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        "show": true,
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          "format": "bytes",
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          "max": null,
          "min": "0",
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      ],
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      }
    },
    {
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      "colorValue": false,
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        "#d44a3a",
        "rgba(237, 129, 40, 0.89)",
        "#299c46"
      ],
      "datasource": "$MyInstance",
      "format": "none",
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        "minValue": 0,
        "show": true,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
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        "h": 4,
        "w": 4,
        "x": 20,
        "y": 2
      },
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      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
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        {
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      "nullPointMode": "connected",
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      "options": {},
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
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        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
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        "show": true
      },
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        {
          "alias": "",
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          "group": [],
          "hide": false,
          "metricColumn": "none",
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              {
                "params": [
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            {
              "name": "$__timeFilter",
              "params": [],
              "type": "macro"
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          ]
        }
      ],
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      "title": "InnoDB Cache Hit",
      "type": "singlestat",
      "valueFontSize": "80%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
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        }
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        "#d44a3a",
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      },
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        "x": 20,
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      },
      "id": 42,
      "interval": null,
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      "targets": [
        {
          "alias": "",
          "format": "time_series",
          "group": [],
          "hide": false,
          "metricColumn": "none",
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          "rawSql": "SELECT $__timeGroup(s1.timest,'30m') as time_sec,\n  avg(1-s1.variable_value/s2.variable_value)*100 as value\nFROM my2.status s1,  my2.status s2\nWHERE $__timeFilter(s1.timest)\n  AND s1.timest=s2.timest\n  AND s1.variable_name='KEY_READS-d'\n  AND s2.variable_name='KEY_READ_REQUESTS-d'\n  AND s2.variable_value>0\nGROUP BY 1\nORDER BY 1 ASC\n",
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            {
              "name": "$__timeFilter",
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      "aliasColors": {
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        "DELETE_MULTI": "#bf1b00",
        "INSERT": "#629e51",
        "INSERT_SELECT": "#3f6833",
        "SELECT": "#5195ce",
        "UPDATE": "#cca300",
        "UPDATE_MULTI": "#f2c96d"
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        }
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          ],
          "table": "mylog",
          "timeColumn": "c1",
          "timeColumnType": "timestamp",
          "where": [
            {
              "name": "$__timeFilter",
              "params": [],
              "type": "macro"
            }
          ]
        }
      ],
      "title": "by XeniaLAB",
      "transparent": true,
      "type": "text"
    }
  ],
  "refresh": false,
  "schemaVersion": 22,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": [
      {
        "current": {
          "selected": true,
          "text": "MyMySQL",
          "value": "MyMySQL"
        },
        "hide": 1,
        "includeAll": false,
        "label": null,
        "multi": false,
        "name": "MyInstance",
        "options": [],
        "query": "mysql",
        "refresh": 1,
        "regex": "/.*/",
        "skipUrlSync": false,
        "type": "datasource"
      },
      {
        "allValue": null,
        "current": {},
        "datasource": "$MyInstance",
        "definition": "",
        "hide": 0,
        "includeAll": false,
        "label": "Custom Statistic",
        "multi": true,
        "name": "MyStatistics",
        "options": [],
        "query": "select distinct variable_name from my2.status where variable_name is not null and variable_name <>'' order by 1",
        "refresh": 2,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {},
        "datasource": "$MyInstance",
        "definition": "select concat( @@hostname,':', @@port)",
        "hide": 2,
        "includeAll": false,
        "label": null,
        "multi": false,
        "name": "MyVar",
        "options": [],
        "query": "select concat( @@hostname,':', @@port)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {},
        "datasource": "$MyInstance",
        "definition": "select concat('MySQL version: ',version(), '   Created at: ', date_format(min(create_time),'%Y-%m-%d %T') ,\n  '  Started at: ', date_format(date_sub(now(), INTERVAL variable_value second),'%Y-%m-%d %T')) info\n  from   information_schema.tables,information_schema.global_status\n where variable_name='UPTIME'\n group by variable_value\n",
        "hide": 2,
        "includeAll": false,
        "label": null,
        "multi": false,
        "name": "MyVar2",
        "options": [],
        "query": "select concat('MySQL version: ',version(), '   Created at: ', date_format(min(create_time),'%Y-%m-%d %T') ,\n  '  Started at: ', date_format(date_sub(now(), INTERVAL variable_value second),'%Y-%m-%d %T')) info\n  from   information_schema.tables,information_schema.global_status\n where variable_name='UPTIME'\n group by variable_value\n",
        "refresh": 2,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      }
    ]
  },
  "time": {
    "from": "now-7d",
    "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": "2MySQL  Simple Dashboard 4 MariaDB",
  "uid": "aJuGTz8Zz",
  "version": 5
}