Grafana dashboard: Lustre Exporter MDS Overview

# Requirements

## Exporter

* [Node Exporter](https://github.com/prometheus/node_exporter)
* [Lustre Exporter](https://github.com/GSI-HPC/lustre_exporter)

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      "pluginName": "Prometheus"
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      "name": "VAR_LUSTRE_PORT",
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      "label": "lustre_port",
      "value": "9169",
      "description": ""
    },
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      "name": "VAR_NODE_PORT",
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      "description": ""
    },
    {
      "name": "VAR_NODE_JOB",
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    },
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      "name": "VAR_LUSTRE_JOB",
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            }
          },
          "pluginVersion": "8.5.5",
          "targets": [
            {
              "datasource": {
                "type": "prometheus",
                "uid": "${DS_PROMETHEUS}"
              },
              "editorMode": "code",
              "expr": "lustre_health_check{instance=~\"$host:$lustre_port\",job=\"$lustre_job\"}",
              "legendFormat": "{{instance}}",
              "range": true,
              "refId": "A"
            }
          ],
          "title": "Healthy",
          "type": "timeseries"
        }
      ],
      "title": "Status",
      "type": "row"
    }
  ],
  "refresh": "",
  "schemaVersion": 36,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": [
      {
        "current": {},
        "datasource": {
          "type": "prometheus",
          "uid": "${DS_PROMETHEUS}"
        },
        "definition": "lustre_changelog_current_index",
        "description": "",
        "hide": 0,
        "includeAll": false,
        "label": "Filesystem",
        "multi": false,
        "name": "fs_name",
        "options": [],
        "query": {
          "query": "lustre_changelog_current_index",
          "refId": "StandardVariableQuery"
        },
        "refresh": 1,
        "regex": "/target=\"([\\w]+)\\-MDT/",
        "skipUrlSync": false,
        "sort": 0,
        "type": "query"
      },
      {
        "current": {},
        "datasource": {
          "type": "prometheus",
          "uid": "${DS_PROMETHEUS}"
        },
        "definition": "label_values(lustre_changelog_current_index{target=~\"$fs_name-MDT.*\"}, instance)",
        "description": "Target Host",
        "hide": 0,
        "includeAll": true,
        "label": "Host",
        "multi": true,
        "name": "host",
        "options": [],
        "query": {
          "query": "label_values(lustre_changelog_current_index{target=~\"$fs_name-MDT.*\"}, instance)",
          "refId": "StandardVariableQuery"
        },
        "refresh": 1,
        "regex": "/([^:]+):/",
        "skipUrlSync": false,
        "sort": 0,
        "type": "query"
      },
      {
        "description": "Port Number of Lustre Exporter",
        "hide": 2,
        "name": "lustre_port",
        "query": "${VAR_LUSTRE_PORT}",
        "skipUrlSync": false,
        "type": "constant",
        "current": {
          "value": "${VAR_LUSTRE_PORT}",
          "text": "${VAR_LUSTRE_PORT}",
          "selected": false
        },
        "options": [
          {
            "value": "${VAR_LUSTRE_PORT}",
            "text": "${VAR_LUSTRE_PORT}",
            "selected": false
          }
        ]
      },
      {
        "description": "Port Number of Node Exporter",
        "hide": 2,
        "name": "node_port",
        "query": "${VAR_NODE_PORT}",
        "skipUrlSync": false,
        "type": "constant",
        "current": {
          "value": "${VAR_NODE_PORT}",
          "text": "${VAR_NODE_PORT}",
          "selected": false
        },
        "options": [
          {
            "value": "${VAR_NODE_PORT}",
            "text": "${VAR_NODE_PORT}",
            "selected": false
          }
        ]
      },
      {
        "description": "Job Name of Node Exporter",
        "hide": 2,
        "name": "node_job",
        "query": "${VAR_NODE_JOB}",
        "skipUrlSync": false,
        "type": "constant",
        "current": {
          "value": "${VAR_NODE_JOB}",
          "text": "${VAR_NODE_JOB}",
          "selected": false
        },
        "options": [
          {
            "value": "${VAR_NODE_JOB}",
            "text": "${VAR_NODE_JOB}",
            "selected": false
          }
        ]
      },
      {
        "description": "Job Name of Lustre Exporter",
        "hide": 2,
        "name": "lustre_job",
        "query": "${VAR_LUSTRE_JOB}",
        "skipUrlSync": false,
        "type": "constant",
        "current": {
          "value": "${VAR_LUSTRE_JOB}",
          "text": "${VAR_LUSTRE_JOB}",
          "selected": false
        },
        "options": [
          {
            "value": "${VAR_LUSTRE_JOB}",
            "text": "${VAR_LUSTRE_JOB}",
            "selected": false
          }
        ]
      }
    ]
  },
  "time": {
    "from": "now-24h",
    "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": "Lustre Exporter MDS Overview",
  "uid": "aClpf4vWkGENERALfgdfgdsrer",
  "version": 6,
  "weekStart": "",
  "gnetId": 15872
}