{
  "uid": "nexus-system",
  "title": "Nexus — System",
  "tags": ["node", "system"],
  "timezone": "browser",
  "schemaVersion": 36,
  "refresh": "30s",
  "time": {
    "from": "now-1h",
    "to": "now"
  },
  "templating": {
    "list": [
      {
        "name": "datasource",
        "type": "datasource",
        "query": "prometheus",
        "current": {
          "selected": false,
          "text": "Prometheus",
          "value": "Prometheus"
        }
      }
    ]
  },
  "panels": [
    {
      "id": 1,
      "title": "CPU Usage %",
      "type": "timeseries",
      "gridPos": {"h": 8, "w": 12, "x": 0, "y": 0},
      "datasource": {"type": "prometheus", "uid": "${datasource}"},
      "targets": [
        {
          "datasource": {"type": "prometheus", "uid": "${datasource}"},
          "expr": "100 - (avg by(instance) (rate(node_cpu_seconds_total{mode=\"idle\"}[5m])) * 100)",
          "legendFormat": "CPU %",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "custom": {"drawStyle": "line", "lineWidth": 2, "fillOpacity": 10},
          "unit": "percent",
          "min": 0,
          "max": 100
        },
        "overrides": []
      }
    },
    {
      "id": 2,
      "title": "Memory Usage %",
      "type": "timeseries",
      "gridPos": {"h": 8, "w": 12, "x": 12, "y": 0},
      "datasource": {"type": "prometheus", "uid": "${datasource}"},
      "targets": [
        {
          "datasource": {"type": "prometheus", "uid": "${datasource}"},
          "expr": "100 * (1 - node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes)",
          "legendFormat": "Memory %",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "custom": {"drawStyle": "line", "lineWidth": 2, "fillOpacity": 10},
          "unit": "percent",
          "min": 0,
          "max": 100
        },
        "overrides": []
      }
    },
    {
      "id": 3,
      "title": "Disk Usage %",
      "type": "timeseries",
      "gridPos": {"h": 8, "w": 12, "x": 0, "y": 8},
      "datasource": {"type": "prometheus", "uid": "${datasource}"},
      "targets": [
        {
          "datasource": {"type": "prometheus", "uid": "${datasource}"},
          "expr": "100 * (1 - node_filesystem_avail_bytes{fstype!~\"tmpfs|ramfs\"} / node_filesystem_size_bytes{fstype!~\"tmpfs|ramfs\"})",
          "legendFormat": "{{mountpoint}}",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "custom": {"drawStyle": "line", "lineWidth": 2, "fillOpacity": 10},
          "unit": "percent",
          "min": 0,
          "max": 100
        },
        "overrides": []
      }
    },
    {
      "id": 4,
      "title": "Network I/O",
      "type": "timeseries",
      "gridPos": {"h": 8, "w": 12, "x": 12, "y": 8},
      "datasource": {"type": "prometheus", "uid": "${datasource}"},
      "targets": [
        {
          "datasource": {"type": "prometheus", "uid": "${datasource}"},
          "expr": "rate(node_network_receive_bytes_total[5m])",
          "legendFormat": "Receive {{device}}",
          "refId": "A"
        },
        {
          "datasource": {"type": "prometheus", "uid": "${datasource}"},
          "expr": "rate(node_network_transmit_bytes_total[5m])",
          "legendFormat": "Transmit {{device}}",
          "refId": "B"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "custom": {"drawStyle": "line", "lineWidth": 2, "fillOpacity": 10},
          "unit": "Bps",
          "min": 0
        },
        "overrides": []
      }
    },
    {
      "id": 5,
      "title": "Load Average",
      "type": "timeseries",
      "gridPos": {"h": 8, "w": 24, "x": 0, "y": 16},
      "datasource": {"type": "prometheus", "uid": "${datasource}"},
      "targets": [
        {
          "datasource": {"type": "prometheus", "uid": "${datasource}"},
          "expr": "node_load1",
          "legendFormat": "1m load",
          "refId": "A"
        },
        {
          "datasource": {"type": "prometheus", "uid": "${datasource}"},
          "expr": "node_load5",
          "legendFormat": "5m load",
          "refId": "B"
        },
        {
          "datasource": {"type": "prometheus", "uid": "${datasource}"},
          "expr": "node_load15",
          "legendFormat": "15m load",
          "refId": "C"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "custom": {"drawStyle": "line", "lineWidth": 2, "fillOpacity": 10},
          "unit": "short",
          "min": 0
        },
        "overrides": []
      }
    }
  ]
}
