Grafana dashboard: Moodle with postgres
Description: Dashboard for moodle with postgresql. 

- system overview
- apache overview
- postgresl ovelview
- number of moodle users

Dashboard for `telegraf`, `influxDB` and `Graana`

Inputs for telegraf : 

```
[[inputs.cpu]]
[[inputs.disk]]
[[inputs.diskio]]
[[inputs.kernel]]
[[inputs.mem]]
[[inputs.processes]]
[[inputs.swap]]
[[inputs.system]]
[[inputs.exec]]
[[inputs.apache]]
[[inputs.postgresql]]

```

{
  "__inputs": [
    {
      "name": "DS_influx.example.org",
      "label": "influx.example.org",
      "description": "",
      "type": "datasource",
      "pluginId": "influxdb",
      "pluginName": "InfluxDB"
    }
  ],
  "__requires": [
    {
      "type": "panel",
      "id": "gauge",
      "name": "Gauge",
      "version": ""
    },
    {
      "type": "grafana",
      "id": "grafana",
      "name": "Grafana",
      "version": "7.0.0"
    },
    {
      "type": "panel",
      "id": "graph",
      "name": "Graph",
      "version": ""
    },
    {
      "type": "datasource",
      "id": "influxdb",
      "name": "InfluxDB",
      "version": "1.0.0"
    },
    {
      "type": "panel",
      "id": "singlestat",
      "name": "Singlestat",
      "version": ""
    },
    {
      "type": "panel",
      "id": "stat",
      "name": "Stat",
      "version": ""
    }
  ],
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "gnetId": 12418,
  "graphTooltip": 1,
  "id": null,
  "iteration": 1591457654243,
  "links": [],
  "panels": [
    {
      "collapsed": false,
      "datasource": "${DS_influx.example.org}",
      "gridPos": {
        "h": 1,
        "w": 24,
        "x": 0,
        "y": 0
      },
      "id": 2,
      "panels": [],
      "title": "Quick overview",
      "type": "row"
    },
    {
      "datasource": "${DS_influx.example.org}",
      "fieldConfig": {
        "defaults": {
          "custom": {},
          "decimals": 1,
          "mappings": [
            {
              "from": "",
              "id": 0,
              "operator": "",
              "text": "N/A",
              "to": "",
              "type": 1
            }
          ],
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "light-blue",
                "value": null
              }
            ]
          },
          "unit": "s"
        },
        "overrides": []
      },
      "gridPos": {
        "h": 4,
        "w": 2,
        "x": 0,
        "y": 1
      },
      "id": 4,
      "options": {
        "colorMode": "value",
        "graphMode": "none",
        "justifyMode": "auto",
        "orientation": "horizontal",
        "reduceOptions": {
          "calcs": [
            "mean"
          ],
          "values": false
        }
      },
      "pluginVersion": "7.0.0",
      "targets": [
        {
          "groupBy": [
            {
              "params": [
                "$__interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "system",
          "orderByTime": "ASC",
          "policy": "default",
          "query": "SELECT last(\"uptime\") FROM \"system\" WHERE (\"host\" =~ /^$server$/) AND $timeFilter GROUP BY time($interval) fill(null)",
          "rawQuery": true,
          "refId": "A",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "uptime"
                ],
                "type": "field"
              }
            ]
          ],
          "tags": [
            {
              "key": "host",
              "operator": "=~",
              "value": "/^$server$/"
            }
          ]
        }
      ],
      "timeFrom": null,
      "timeShift": null,
      "title": "Uptime",
      "type": "stat"
    },
    {
      "cacheTimeout": null,
      "datasource": "${DS_influx.example.org}",
      "fieldConfig": {
        "defaults": {
          "custom": {},
          "mappings": [
            {
              "id": 0,
              "op": "=",
              "text": "N/A",
              "type": 1,
              "value": "null"
            }
          ],
          "nullValueMode": "connected",
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "rgb(28, 28, 28)",
                "value": null
              }
            ]
          },
          "unit": "none"
        },
        "overrides": []
      },
      "gridPos": {
        "h": 2,
        "w": 2,
        "x": 2,
        "y": 1
      },
      "id": 43,
      "interval": null,
      "links": [],
      "maxDataPoints": 100,
      "options": {
        "colorMode": "value",
        "fieldOptions": {
          "calcs": [
            "mean"
          ]
        },
        "graphMode": "none",
        "justifyMode": "auto",
        "orientation": "horizontal",
        "reduceOptions": {
          "calcs": [
            "mean"
          ],
          "values": false
        }
      },
      "pluginVersion": "7.0.0",
      "targets": [
        {
          "dsType": "influxdb",
          "groupBy": [
            {
              "params": [
                "$interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "system",
          "orderByTime": "ASC",
          "policy": "default",
          "refId": "A",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "n_cpus"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "first"
              }
            ]
          ],
          "tags": [
            {
              "key": "host",
              "operator": "=~",
              "value": "/^$server$/"
            }
          ]
        }
      ],
      "title": "CPUs",
      "type": "stat"
    },
    {
      "datasource": "${DS_influx.example.org}",
      "fieldConfig": {
        "defaults": {
          "custom": {},
          "mappings": [],
          "max": 100,
          "min": 0,
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              },
              {
                "color": "#EAB839",
                "value": 70
              },
              {
                "color": "red",
                "value": 80
              }
            ]
          },
          "unit": "percent"
        },
        "overrides": []
      },
      "gridPos": {
        "h": 4,
        "w": 2,
        "x": 4,
        "y": 1
      },
      "id": 6,
      "options": {
        "orientation": "auto",
        "reduceOptions": {
          "calcs": [
            "mean"
          ],
          "values": false
        },
        "showThresholdLabels": false,
        "showThresholdMarkers": true
      },
      "pluginVersion": "7.0.0",
      "targets": [
        {
          "groupBy": [
            {
              "params": [
                "$__interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "cpu",
          "orderByTime": "ASC",
          "policy": "default",
          "query": "SELECT last(\"usage_idle\") * -1 + 100 FROM \"cpu\" WHERE (\"host\" =~ /^$server$/ AND \"cpu\" = 'cpu-total') AND $timeFilter GROUP BY time($interval) fill(null)",
          "rawQuery": true,
          "refId": "A",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "value"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "mean"
              }
            ]
          ],
          "tags": [
            {
              "key": "host",
              "operator": "=~",
              "value": "/^$server$/"
            },
            {
              "condition": "AND",
              "key": "and cpu=cpu-total",
              "operator": "=",
              "value": "select tag value"
            }
          ]
        }
      ],
      "timeFrom": null,
      "timeShift": null,
      "title": "CPU usage",
      "type": "gauge"
    },
    {
      "cacheTimeout": null,
      "datasource": "${DS_influx.example.org}",
      "fieldConfig": {
        "defaults": {
          "custom": {},
          "mappings": [
            {
              "id": 0,
              "op": "=",
              "text": "N/A",
              "type": 1,
              "value": "null"
            }
          ],
          "max": 100,
          "min": 0,
          "nullValueMode": "connected",
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "rgba(50, 172, 45, 0.97)",
                "value": null
              },
              {
                "color": "rgba(237, 129, 40, 0.89)",
                "value": 70
              },
              {
                "color": "rgba(245, 54, 54, 0.9)",
                "value": 80
              }
            ]
          },
          "unit": "percent"
        },
        "overrides": []
      },
      "gridPos": {
        "h": 4,
        "w": 2,
        "x": 6,
        "y": 1
      },
      "id": 8,
      "interval": null,
      "links": [],
      "maxDataPoints": 100,
      "options": {
        "fieldOptions": {
          "calcs": [
            "lastNotNull"
          ]
        },
        "orientation": "horizontal",
        "reduceOptions": {
          "calcs": [
            "mean"
          ],
          "values": false
        },
        "showThresholdLabels": false,
        "showThresholdMarkers": true
      },
      "pluginVersion": "7.0.0",
      "targets": [
        {
          "dsType": "influxdb",
          "groupBy": [
            {
              "params": [
                "$interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "mem",
          "orderByTime": "ASC",
          "policy": "default",
          "refId": "A",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "used_percent"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "last"
              }
            ]
          ],
          "tags": [
            {
              "key": "host",
              "operator": "=~",
              "value": "/^$server$/"
            }
          ]
        }
      ],
      "title": "RAM usage",
      "type": "gauge"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "rgba(50, 172, 45, 0.97)",
        "rgba(237, 129, 40, 0.89)",
        "rgba(245, 54, 54, 0.9)"
      ],
      "datasource": "${DS_influx.example.org}",
      "decimals": 0,
      "editable": true,
      "error": false,
      "fieldConfig": {
        "defaults": {
          "custom": {}
        },
        "overrides": []
      },
      "format": "percent",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": true,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 4,
        "w": 2,
        "x": 8,
        "y": 1
      },
      "height": "150",
      "id": 11,
      "interval": null,
      "links": [],
      "mappingType": 1,
      "mappingTypes": [
        {
          "name": "value to text",
          "value": 1
        },
        {
          "name": "range to text",
          "value": 2
        }
      ],
      "maxDataPoints": 100,
      "nullPointMode": "connected",
      "nullText": null,
      "postfix": "",
      "postfixFontSize": "50%",
      "prefix": "",
      "prefixFontSize": "50%",
      "rangeMaps": [
        {
          "from": "null",
          "text": "N/A",
          "to": "null"
        }
      ],
      "sparkline": {
        "fillColor": "rgba(31, 118, 189, 0.18)",
        "full": false,
        "lineColor": "rgb(31, 120, 193)",
        "show": false
      },
      "tableColumn": "",
      "targets": [
        {
          "dsType": "influxdb",
          "groupBy": [
            {
              "params": [
                "$interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "swap",
          "policy": "default",
          "refId": "A",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "used_percent"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "last"
              }
            ]
          ],
          "tags": [
            {
              "key": "host",
              "operator": "=~",
              "value": "/^$server$/"
            }
          ]
        }
      ],
      "thresholds": "50,70,90",
      "title": "Swap usage",
      "type": "singlestat",
      "valueFontSize": "80%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "datasource": "${DS_influx.example.org}",
      "fieldConfig": {
        "defaults": {
          "custom": {},
          "mappings": [
            {
              "id": 0,
              "op": "=",
              "text": "N/A",
              "type": 1,
              "value": "null"
            }
          ],
          "nullValueMode": "connected",
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              },
              {
                "color": "semi-dark-red",
                "value": 10
              },
              {
                "color": "light-red",
                "value": 20
              },
              {
                "color": "dark-orange",
                "value": 30
              },
              {
                "color": "semi-dark-orange",
                "value": 50
              },
              {
                "color": "semi-dark-yellow",
                "value": 60
              },
              {
                "color": "light-green",
                "value": 70
              },
              {
                "color": "semi-dark-green",
                "value": 80
              },
              {
                "color": "dark-green",
                "value": 90
              }
            ]
          },
          "unit": "short"
        },
        "overrides": []
      },
      "gridPos": {
        "h": 4,
        "w": 4,
        "x": 10,
        "y": 1
      },
      "id": 47,
      "interval": null,
      "links": [],
      "maxDataPoints": 100,
      "options": {
        "colorMode": "value",
        "fieldOptions": {
          "calcs": [
            "mean"
          ]
        },
        "graphMode": "area",
        "justifyMode": "auto",
        "orientation": "horizontal",
        "reduceOptions": {
          "calcs": [
            "mean"
          ],
          "values": false
        }
      },
      "pluginVersion": "7.0.0",
      "targets": [
        {
          "dsType": "influxdb",
          "groupBy": [
            {
              "params": [
                "10s"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "mem",
          "orderByTime": "ASC",
          "policy": "default",
          "refId": "A",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "available_percent"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "mean"
              }
            ]
          ],
          "tags": [
            {
              "key": "host",
              "operator": "=~",
              "value": "/^$server$/"
            }
          ]
        }
      ],
      "title": "RAM available %",
      "type": "stat"
    },
    {
      "cacheTimeout": null,
      "colorBackground": false,
      "colorValue": true,
      "colors": [
        "rgba(50, 172, 45, 0.97)",
        "rgba(237, 129, 40, 0.89)",
        "rgba(245, 54, 54, 0.9)"
      ],
      "datasource": "${DS_influx.example.org}",
      "decimals": 0,
      "editable": true,
      "error": false,
      "fieldConfig": {
        "defaults": {
          "custom": {}
        },
        "overrides": []
      },
      "format": "percent",
      "gauge": {
        "maxValue": 100,
        "minValue": 0,
        "show": true,
        "thresholdLabels": false,
        "thresholdMarkers": true
      },
      "gridPos": {
        "h": 4,
        "w": 2,
        "x": 14,
        "y": 1
      },
      "height": "150",
      "id": 13,
      "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": [
        {
          "dsType": "influxdb",
          "groupBy": [
            {
              "params": [
                "$interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "disk",
          "policy": "default",
          "refId": "A",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "used_percent"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "last"
              }
            ]
          ],
          "tags": [
            {
              "key": "host",
              "operator": "=~",
              "value": "/^$server$/"
            },
            {
              "condition": "AND",
              "key": "path",
              "operator": "=",
              "value": "/"
            }
          ]
        }
      ],
      "thresholds": "70,80,90",
      "title": "RootFS used",
      "type": "singlestat",
      "valueFontSize": "80%",
      "valueMaps": [
        {
          "op": "=",
          "text": "N/A",
          "value": "null"
        }
      ],
      "valueName": "current"
    },
    {
      "cacheTimeout": null,
      "datasource": "${DS_influx.example.org}",
      "fieldConfig": {
        "defaults": {
          "custom": {},
          "decimals": 0,
          "mappings": [
            {
              "id": 0,
              "op": "=",
              "text": "N/A",
              "type": 1,
              "value": "null"
            }
          ],
          "nullValueMode": "connected",
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "rgb(23, 23, 23)",
                "value": null
              }
            ]
          },
          "unit": "bytes"
        },
        "overrides": []
      },
      "gridPos": {
        "h": 2,
        "w": 2,
        "x": 2,
        "y": 3
      },
      "id": 45,
      "interval": null,
      "links": [],
      "maxDataPoints": 100,
      "options": {
        "colorMode": "value",
        "fieldOptions": {
          "calcs": [
            "mean"
          ]
        },
        "graphMode": "none",
        "justifyMode": "auto",
        "orientation": "horizontal",
        "reduceOptions": {
          "calcs": [
            "mean"
          ],
          "values": false
        }
      },
      "pluginVersion": "7.0.0",
      "targets": [
        {
          "dsType": "influxdb",
          "groupBy": [
            {
              "params": [
                "$interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "mem",
          "orderByTime": "ASC",
          "policy": "default",
          "refId": "A",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "total"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "mean"
              }
            ]
          ],
          "tags": [
            {
              "key": "host",
              "operator": "=~",
              "value": "/^$server$/"
            }
          ]
        }
      ],
      "title": "RAM",
      "type": "stat"
    },
    {
      "datasource": "${DS_influx.example.org}",
      "description": "",
      "fieldConfig": {
        "defaults": {
          "custom": {},
          "decimals": 0,
          "mappings": [
            {
              "from": "",
              "id": 0,
              "operator": "",
              "text": "N/A",
              "to": "",
              "type": 1
            }
          ],
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              },
              {
                "color": "#EAB839",
                "value": 150
              },
              {
                "color": "red",
                "value": 250
              }
            ]
          },
          "unit": "none"
        },
        "overrides": []
      },
      "gridPos": {
        "h": 4,
        "w": 4,
        "x": 0,
        "y": 5
      },
      "id": 9,
      "options": {
        "colorMode": "value",
        "graphMode": "area",
        "justifyMode": "auto",
        "orientation": "horizontal",
        "reduceOptions": {
          "calcs": [
            "mean"
          ],
          "values": false
        }
      },
      "pluginVersion": "7.0.0",
      "targets": [
        {
          "groupBy": [
            {
              "params": [
                "$__interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "nUsersMoodle",
          "orderByTime": "ASC",
          "policy": "default",
          "query": "SELECT \"nUsersMoodle\" FROM \"nUsersMoodle\" WHERE (\"host\" =~ /^$server$/) ",
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              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "postgresql",
          "orderByTime": "ASC",
          "policy": "default",
          "query": "SELECT mean(\"tup_inserted\") FROM \"postgresql\" WHERE $timeFilter GROUP BY time($__interval) fill(null)",
          "rawQuery": false,
          "refId": "C",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "tup_inserted"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "mean"
              },
              {
                "params": [
                  "1s"
                ],
                "type": "non_negative_derivative"
              }
            ]
          ],
          "tags": []
        },
        {
          "alias": "Updated",
          "groupBy": [
            {
              "params": [
                "$__interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "postgresql",
          "orderByTime": "ASC",
          "policy": "default",
          "query": "SELECT mean(\"tup_inserted\") FROM \"postgresql\" WHERE $timeFilter GROUP BY time($__interval) fill(null)",
          "rawQuery": false,
          "refId": "D",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "tup_updated"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "mean"
              },
              {
                "params": [
                  "1s"
                ],
                "type": "non_negative_derivative"
              }
            ]
          ],
          "tags": []
        },
        {
          "alias": "Returned",
          "groupBy": [
            {
              "params": [
                "$__interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "postgresql",
          "orderByTime": "ASC",
          "policy": "default",
          "query": "SELECT mean(\"tup_inserted\") FROM \"postgresql\" WHERE $timeFilter GROUP BY time($__interval) fill(null)",
          "rawQuery": false,
          "refId": "E",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "tup_returned"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "mean"
              },
              {
                "params": [
                  "1s"
                ],
                "type": "non_negative_derivative"
              }
            ]
          ],
          "tags": []
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Tuples",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "$$hashKey": "object:2912",
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "$$hashKey": "object:2913",
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    }
  ],
  "refresh": "30s",
  "schemaVersion": 25,
  "style": "dark",
  "tags": [
    "postgres",
    "moodle",
    "apache",
    "system"
  ],
  "templating": {
    "list": [
      {
        "current": {
          "selected": false,
          "text": "influx.example.org",
          "value": "influx.example.org"
        },
        "hide": 0,
        "includeAll": false,
        "label": null,
        "multi": false,
        "name": "datasource",
        "options": [],
        "query": "influxdb",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "type": "datasource"
      },
      {
        "auto": true,
        "auto_count": "100",
        "auto_min": "30s",
        "current": {
          "selected": false,
          "text": "auto",
          "value": "$__auto_interval_inter"
        },
        "hide": 0,
        "label": "Sampling",
        "name": "inter",
        "options": [
          {
            "selected": true,
            "text": "auto",
            "value": "$__auto_interval_inter"
          },
          {
            "selected": false,
            "text": "10s",
            "value": "10s"
          },
          {
            "selected": false,
            "text": "30s",
            "value": "30s"
          },
          {
            "selected": false,
            "text": "1m",
            "value": "1m"
          },
          {
            "selected": false,
            "text": "2m",
            "value": "2m"
          },
          {
            "selected": false,
            "text": "5m",
            "value": "5m"
          },
          {
            "selected": false,
            "text": "10m",
            "value": "10m"
          },
          {
            "selected": false,
            "text": "30m",
            "value": "30m"
          },
          {
            "selected": false,
            "text": "1h",
            "value": "1h"
          },
          {
            "selected": false,
            "text": "6h",
            "value": "6h"
          },
          {
            "selected": false,
            "text": "12h",
            "value": "12h"
          },
          {
            "selected": false,
            "text": "1d",
            "value": "1d"
          },
          {
            "selected": false,
            "text": "7d",
            "value": "7d"
          },
          {
            "selected": false,
            "text": "14d",
            "value": "14d"
          },
          {
            "selected": false,
            "text": "30d",
            "value": "30d"
          }
        ],
        "query": "10s,30s,1m,2m,5m,10m,30m,1h,6h,12h,1d,7d,14d,30d",
        "queryValue": "",
        "refresh": 2,
        "skipUrlSync": false,
        "type": "interval"
      },
      {
        "allValue": null,
        "current": {},
        "datasource": "${DS_influx.example.org}",
        "definition": "SHOW TAG VALUES FROM system WITH KEY=host",
        "hide": 0,
        "includeAll": false,
        "label": "Server",
        "multi": false,
        "name": "server",
        "options": [],
        "query": "SHOW TAG VALUES FROM system WITH KEY=host",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {},
        "datasource": "$datasource",
        "definition": "SHOW TAG VALUES FROM \"cpu\" WITH KEY = \"cpu\" WHERE host =~ /$server/",
        "hide": 0,
        "includeAll": true,
        "label": "CPU",
        "multi": true,
        "name": "cpu",
        "options": [],
        "query": "SHOW TAG VALUES FROM \"cpu\" WITH KEY = \"cpu\" WHERE host =~ /$server/",
        "refresh": 1,
        "regex": "/cpu[0-9]/",
        "skipUrlSync": false,
        "sort": 1,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      }
    ]
  },
  "time": {
    "from": "now-24h",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ]
  },
  "timezone": "browser",
  "title": "Moodle with postgres",
  "uid": "AYBObSiGk",
  "version": 13,
  "description": "Dashboard for moodle with postgresql. \r\n\r\n- system overview\r\n- apache overview\r\n- postgresl ovelview\r\n- number of moodle users"
}