{
  "uid": "cnx-uptime",
  "title": "CNX Uptime",
  "tags": ["uptime", "availability", "cnx"],
  "timezone": "browser",
  "schemaVersion": 39,
  "version": 1,
  "refresh": "30s",
  "time": { "from": "now-24h", "to": "now" },
  "templating": { "list": [] },
  "annotations": { "list": [] },
  "panels": [
    {
      "type": "row",
      "title": "Uptime",
      "id": 1,
      "gridPos": { "h": 1, "w": 24, "x": 0, "y": 0 }
    },
    {
      "type": "stat",
      "title": "Host status",
      "description": "Whether VictoriaMetrics is currently able to scrape each host's node_exporter. UP means the host (and its mesh path) is reachable; DOWN means the scrape failed. One tile per machine.",
      "id": 2,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 6, "w": 12, "x": 0, "y": 1 },
      "fieldConfig": {
        "defaults": {
          "color": { "mode": "thresholds" },
          "thresholds": {
            "mode": "absolute",
            "steps": [{ "color": "green", "value": null }]
          },
          "noValue": "no data",
          "mappings": [
            {
              "type": "value",
              "options": {
                "0": { "text": "DOWN", "color": "red", "index": 0 },
                "1": { "text": "UP", "color": "green", "index": 1 }
              }
            }
          ]
        },
        "overrides": []
      },
      "options": {
        "reduceOptions": {
          "calcs": ["lastNotNull"],
          "fields": "",
          "values": false
        },
        "colorMode": "background",
        "graphMode": "none",
        "textMode": "value_and_name",
        "orientation": "auto"
      },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "up{job=\"node\"}",
          "legendFormat": "{{instance}}",
          "instant": true
        }
      ]
    },
    {
      "type": "stat",
      "title": "Current uptime",
      "description": "Time since each host last booted (now - node_boot_time_seconds). A value that drops back to near zero means the host rebooted.",
      "id": 3,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 6, "w": 12, "x": 12, "y": 1 },
      "fieldConfig": {
        "defaults": {
          "unit": "dtdurations",
          "color": { "mode": "fixed", "fixedColor": "text" },
          "noValue": "no data"
        },
        "overrides": []
      },
      "options": {
        "reduceOptions": {
          "calcs": ["lastNotNull"],
          "fields": "",
          "values": false
        },
        "colorMode": "none",
        "graphMode": "none",
        "textMode": "value_and_name",
        "orientation": "auto"
      },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "time() - node_boot_time_seconds{job=\"node\"}",
          "legendFormat": "{{instance}}",
          "instant": true
        }
      ]
    },
    {
      "type": "bargauge",
      "title": "Availability over window",
      "description": "Fraction of successful scrapes over the selected time range, per host (avg of up over $__range). 100% means every scrape in the window succeeded; dips reveal flapping or outages. Red below 99%.",
      "id": 4,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 7 },
      "fieldConfig": {
        "defaults": {
          "unit": "percent",
          "min": 0,
          "max": 100,
          "color": { "mode": "thresholds" },
          "thresholds": {
            "mode": "absolute",
            "steps": [
              { "color": "red", "value": null },
              { "color": "yellow", "value": 99 },
              { "color": "green", "value": 99.9 }
            ]
          },
          "noValue": "no data"
        },
        "overrides": []
      },
      "options": {
        "displayMode": "gradient",
        "orientation": "horizontal",
        "showUnfilled": true,
        "reduceOptions": {
          "calcs": ["lastNotNull"],
          "fields": "",
          "values": false
        }
      },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "avg_over_time(up{job=\"node\"}[$__range]) * 100",
          "legendFormat": "{{instance}}",
          "instant": true
        }
      ]
    },
    {
      "type": "timeseries",
      "title": "Uptime over time",
      "description": "Host uptime across the window. The line should climb steadily; a reset to zero marks a reboot.",
      "id": 5,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 7 },
      "fieldConfig": {
        "defaults": { "unit": "s", "custom": { "fillOpacity": 0 } },
        "overrides": []
      },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "time() - node_boot_time_seconds{job=\"node\"}",
          "legendFormat": "{{instance}}"
        }
      ]
    },
    {
      "type": "timeseries",
      "title": "Up/down history",
      "description": "1 while a host's node_exporter was scrapeable, 0 while it was not. Gaps to zero are outages or lost mesh connectivity.",
      "id": 6,
      "datasource": { "type": "prometheus", "uid": "victoriametrics" },
      "gridPos": { "h": 6, "w": 24, "x": 0, "y": 15 },
      "fieldConfig": {
        "defaults": {
          "unit": "short",
          "min": 0,
          "max": 1,
          "custom": { "fillOpacity": 20, "lineInterpolation": "stepAfter" }
        },
        "overrides": []
      },
      "targets": [
        {
          "refId": "A",
          "datasource": { "type": "prometheus", "uid": "victoriametrics" },
          "expr": "up{job=\"node\"}",
          "legendFormat": "{{instance}}"
        }
      ]
    }
  ]
}