Grafana dashboard: pl-node-memory
Description: Pulse Line style PMET dashboards from node_exporter

Source: https://github.com/pulse-line-dev/pl_dashboards.git

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  "description": "Pulse Line style PMET dashboards from node_exporter",
  "editable": true,
  "gnetId": 11208,
  "graphTooltip": 0,
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  "iteration": 1577529915384,
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  ],
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          "preserveFormat": false,
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          ],
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          "alias": "",
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        {
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      "title": "System general information",
      "transform": "table",
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      "collapsed": false,
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        {
          "expr": "((node_memory_MemTotal_bytes{instance=~\"$node\",job=~\"$job\"} - node_memory_MemFree_bytes{instance=~\"$node\",job=~\"$job\"}) / (node_memory_MemTotal_bytes{instance=~\"$node\",job=~\"$job\"} )) * 100",
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      ],
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      "title": "Used RAM Memory",
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      "datasource": "${DS_PROMETHEUS}",
      "decimals": 2,
      "description": "Total RAM",
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        "minValue": 0,
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      "nullPointMode": "null",
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      "prefixFontSize": "50%",
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      },
      "tableColumn": "",
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        {
          "expr": "node_memory_MemTotal_bytes{instance=~\"$node\",job=~\"$job\"}",
          "instant": true,
          "intervalFactor": 1,
          "refId": "A",
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        }
      ],
      "thresholds": "",
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          "op": "=",
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      "valueName": "current"
    },
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      "aliasColors": {
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        "Buffers": "#614D93",
        "Cache": "#6D1F62",
        "Cached": "#511749",
        "Committed": "#508642",
        "Free": "#0A437C",
        "Harware Corrupted - Amount of RAM that the kernel identified as corrupted / not working": "#CFFAFF",
        "Inactive": "#584477",
        "PageTables": "#0A50A1",
        "Page_Tables": "#0A50A1",
        "RAM_Free": "#E0F9D7",
        "SWAP Used": "#BF1B00",
        "Slab": "#806EB7",
        "Slab_Cache": "#E0752D",
        "Swap": "#BF1B00",
        "Swap Used": "#BF1B00",
        "Swap_Cache": "#C15C17",
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      "dashes": false,
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        },
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          "alias": "RAM Cache + Buffer",
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      "spaceLength": 10,
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        {
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          "format": "time_series",
          "hide": false,
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          "refId": "D",
          "step": 240
        },
        {
          "expr": "node_memory_Cached_bytes{instance=~\"$node\",job=~\"$job\"} + node_memory_Buffers_bytes{instance=~\"$node\",job=~\"$job\"}",
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        },
        {
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        },
        {
          "expr": "(node_memory_SwapTotal_bytes{instance=~\"$node\",job=~\"$job\"} - node_memory_SwapFree_bytes{instance=~\"$node\",job=~\"$job\"})",
          "format": "time_series",
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          "legendFormat": "SWAP Used",
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        }
      ],
      "thresholds": [],
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      "timeRegions": [],
      "timeShift": null,
      "title": "Memory Basic",
      "tooltip": {
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        "value_type": "individual"
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        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "bytes",
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          "min": "0",
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      "yaxis": {
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        "Page_Tables": "#0A50A1",
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        "Swap - Swap memory usage": "#BF1B00",
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        "Swap_Free": "#2F575E",
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        "Unused - Free memory unasigned": "#052B51"
      },
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "${DS_PROMETHEUS}",
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      "description": "",
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        "dataLinks": []
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      "pointradius": 5,
      "points": false,
      "renderer": "flot",
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        {
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          "stack": false
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      "spaceLength": 10,
      "stack": true,
      "steppedLine": false,
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          "expr": "node_memory_MemTotal_bytes{instance=~\"$node\",job=~\"$job\"} - node_memory_MemFree_bytes{instance=~\"$node\",job=~\"$job\"} - node_memory_Buffers_bytes{instance=~\"$node\",job=~\"$job\"} - node_memory_Cached_bytes{instance=~\"$node\",job=~\"$job\"} - node_memory_Slab_bytes{instance=~\"$node\",job=~\"$job\"} - node_memory_PageTables_bytes{instance=~\"$node\",job=~\"$job\"} - node_memory_SwapCached_bytes{instance=~\"$node\",job=~\"$job\"}",
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          "hide": false,
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          "legendFormat": "Apps - Memory used by user-space applications",
          "refId": "Q",
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        },
        {
          "expr": "node_memory_PageTables_bytes{instance=~\"$node\",job=~\"$job\"}",
          "format": "time_series",
          "hide": false,
          "intervalFactor": 2,
          "legendFormat": "PageTables - Memory used to map between virtual and physical memory addresses",
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