{
  "title": "Host Overview",
  "uid": "node-exporter-overview",
  "tags": ["node-exporter", "linux", "system"],
  "schemaVersion": 39,
  "version": 1,
  "refresh": "1m",
  "time": { "from": "now-6h", "to": "now" },
  "timezone": "browser",
  "editable": true,
  "graphTooltip": 1,
  "templating": {
    "list": [
      {
        "name": "instance",
        "label": "Host",
        "type": "query",
        "datasource": { "type": "prometheus", "uid": "prometheus" },
        "query": { "query": "label_values(node_uname_info, instance)", "refId": "A" },
        "refresh": 2,
        "multi": false,
        "includeAll": false,
        "sort": 1,
        "current": { "selected": false, "text": "", "value": "" }
      }
    ]
  },
  "panels": [
    {
      "id": 1,
      "type": "stat",
      "title": "Uptime",
      "gridPos": { "h": 4, "w": 6, "x": 0, "y": 0 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "dtdurations", "color": { "mode": "thresholds" } }, "overrides": [] },
      "options": { "reduceOptions": { "values": false, "calcs": ["lastNotNull"], "fields": "" }, "colorMode": "none", "graphMode": "none", "textMode": "auto", "justifyMode": "auto", "orientation": "auto" },
      "targets": [ { "refId": "A", "expr": "node_time_seconds{instance=\"$instance\"} - node_boot_time_seconds{instance=\"$instance\"}" } ]
    },
    {
      "id": 2,
      "type": "stat",
      "title": "CPU Cores",
      "gridPos": { "h": 4, "w": 6, "x": 6, "y": 0 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "short", "color": { "mode": "thresholds" } }, "overrides": [] },
      "options": { "reduceOptions": { "values": false, "calcs": ["lastNotNull"], "fields": "" }, "colorMode": "none", "graphMode": "none", "textMode": "auto", "justifyMode": "auto", "orientation": "auto" },
      "targets": [ { "refId": "A", "expr": "count(count by (cpu) (node_cpu_seconds_total{mode=\"idle\", instance=\"$instance\"}))" } ]
    },
    {
      "id": 3,
      "type": "stat",
      "title": "Load 1m",
      "gridPos": { "h": 4, "w": 6, "x": 12, "y": 0 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "short", "color": { "mode": "thresholds" } }, "overrides": [] },
      "options": { "reduceOptions": { "values": false, "calcs": ["lastNotNull"], "fields": "" }, "colorMode": "none", "graphMode": "none", "textMode": "auto", "justifyMode": "auto", "orientation": "auto" },
      "targets": [ { "refId": "A", "expr": "node_load1{instance=\"$instance\"}" } ]
    },
    {
      "id": 4,
      "type": "stat",
      "title": "Memory Used",
      "gridPos": { "h": 4, "w": 6, "x": 18, "y": 0 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "percent", "min": 0, "max": 100, "color": { "mode": "thresholds" }, "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "orange", "value": 75 }, { "color": "red", "value": 90 } ] } }, "overrides": [] },
      "options": { "reduceOptions": { "values": false, "calcs": ["lastNotNull"], "fields": "" }, "colorMode": "background", "graphMode": "none", "textMode": "auto", "justifyMode": "auto", "orientation": "auto" },
      "targets": [ { "refId": "A", "expr": "100 * (1 - (node_memory_MemAvailable_bytes{instance=\"$instance\"} / node_memory_MemTotal_bytes{instance=\"$instance\"}))" } ]
    },
    {
      "id": 5,
      "type": "timeseries",
      "title": "CPU Usage",
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 4 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "percent", "min": 0, "max": 100, "color": { "mode": "palette-classic" }, "custom": { "fillOpacity": 20, "lineWidth": 1, "drawStyle": "line", "showPoints": "never" } }, "overrides": [] },
      "targets": [ { "refId": "A", "expr": "100 - (avg by (instance) (rate(node_cpu_seconds_total{mode=\"idle\", instance=\"$instance\"}[$__rate_interval])) * 100)", "legendFormat": "CPU used" } ]
    },
    {
      "id": 6,
      "type": "timeseries",
      "title": "System Load",
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 4 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "short", "color": { "mode": "palette-classic" }, "custom": { "fillOpacity": 10, "lineWidth": 1, "drawStyle": "line", "showPoints": "never" } }, "overrides": [] },
      "targets": [
        { "refId": "A", "expr": "node_load1{instance=\"$instance\"}", "legendFormat": "load1" },
        { "refId": "B", "expr": "node_load5{instance=\"$instance\"}", "legendFormat": "load5" },
        { "refId": "C", "expr": "node_load15{instance=\"$instance\"}", "legendFormat": "load15" }
      ]
    },
    {
      "id": 7,
      "type": "timeseries",
      "title": "Memory Usage %",
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 12 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "percent", "min": 0, "max": 100, "color": { "mode": "palette-classic" }, "custom": { "fillOpacity": 20, "lineWidth": 1, "drawStyle": "line", "showPoints": "never" } }, "overrides": [] },
      "targets": [ { "refId": "A", "expr": "100 * (1 - (node_memory_MemAvailable_bytes{instance=\"$instance\"} / node_memory_MemTotal_bytes{instance=\"$instance\"}))", "legendFormat": "Used %" } ]
    },
    {
      "id": 8,
      "type": "timeseries",
      "title": "Memory",
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 12 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "bytes", "color": { "mode": "palette-classic" }, "custom": { "fillOpacity": 20, "lineWidth": 1, "drawStyle": "line", "showPoints": "never" } }, "overrides": [] },
      "targets": [
        { "refId": "A", "expr": "node_memory_MemTotal_bytes{instance=\"$instance\"} - node_memory_MemAvailable_bytes{instance=\"$instance\"}", "legendFormat": "Used" },
        { "refId": "B", "expr": "node_memory_Cached_bytes{instance=\"$instance\"} + node_memory_Buffers_bytes{instance=\"$instance\"}", "legendFormat": "Cached+Buffers" },
        { "refId": "C", "expr": "node_memory_MemAvailable_bytes{instance=\"$instance\"}", "legendFormat": "Available" },
        { "refId": "D", "expr": "node_zfs_arc_size{instance=\"$instance\"}", "legendFormat": "ZFS ARC" }
      ]
    },
    {
      "id": 9,
      "type": "timeseries",
      "title": "Filesystem Usage %",
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 20 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "percent", "min": 0, "max": 100, "color": { "mode": "palette-classic" }, "custom": { "fillOpacity": 15, "lineWidth": 1, "drawStyle": "line", "showPoints": "never" } }, "overrides": [] },
      "targets": [ { "refId": "A", "expr": "100 * (1 - (node_filesystem_avail_bytes{instance=\"$instance\", fstype!~\"tmpfs|overlay|squashfs|ramfs\"} / node_filesystem_size_bytes{instance=\"$instance\", fstype!~\"tmpfs|overlay|squashfs|ramfs\"}))", "legendFormat": "{{mountpoint}}" } ]
    },
    {
      "id": 10,
      "type": "timeseries",
      "title": "Disk I/O",
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 20 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "Bps", "color": { "mode": "palette-classic" }, "custom": { "fillOpacity": 10, "lineWidth": 1, "drawStyle": "line", "showPoints": "never" } }, "overrides": [] },
      "targets": [
        { "refId": "A", "expr": "rate(node_disk_read_bytes_total{instance=\"$instance\", device!~\"ram.*|loop.*\"}[$__rate_interval])", "legendFormat": "{{device}} read" },
        { "refId": "B", "expr": "-rate(node_disk_written_bytes_total{instance=\"$instance\", device!~\"ram.*|loop.*\"}[$__rate_interval])", "legendFormat": "{{device}} write" }
      ]
    },
    {
      "id": 11,
      "type": "timeseries",
      "title": "Network Traffic",
      "gridPos": { "h": 8, "w": 24, "x": 0, "y": 28 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
      "fieldConfig": { "defaults": { "unit": "Bps", "color": { "mode": "palette-classic" }, "custom": { "fillOpacity": 10, "lineWidth": 1, "drawStyle": "line", "showPoints": "never" } }, "overrides": [] },
      "targets": [
        { "refId": "A", "expr": "rate(node_network_receive_bytes_total{instance=\"$instance\", device!~\"lo|veth.*|cni.*|br-.*|docker.*\"}[$__rate_interval])", "legendFormat": "{{device}} in" },
        { "refId": "B", "expr": "-rate(node_network_transmit_bytes_total{instance=\"$instance\", device!~\"lo|veth.*|cni.*|br-.*|docker.*\"}[$__rate_interval])", "legendFormat": "{{device}} out" }
      ]
    }
  ]
}