{
  "dashboard": {
    "id": null,
    "title": "ONVIF设备监控",
    "tags": ["onvif", "camera", "monitoring"],
    "style": "dark",
    "timezone": "browser",
    "panels": [
      {
        "id": 1,
        "title": "ONVIF设备状态",
        "type": "stat",
        "targets": [
          {
            "expr": "up{job=\"onvif-devices\"}",
            "refId": "A"
          }
        ],
        "fieldConfig": {
          "defaults": {
            "color": {
              "mode": "thresholds"
            },
            "thresholds": {
              "steps": [
                {
                  "color": "red",
                  "value": 0
                },
                {
                  "color": "green",
                  "value": 1
                }
              ]
            }
          }
        },
        "gridPos": {
          "h": 8,
          "w": 12,
          "x": 0,
          "y": 0
        }
      },
      {
        "id": 2,
        "title": "设备在线率",
        "type": "gauge",
        "targets": [
          {
            "expr": "sum(up{job=\"onvif-devices\"}) / count(up{job=\"onvif-devices\"}) * 100",
            "refId": "A"
          }
        ],
        "fieldConfig": {
          "defaults": {
            "min": 0,
            "max": 100,
            "unit": "percent"
          }
        },
        "gridPos": {
          "h": 8,
          "w": 12,
          "x": 12,
          "y": 0
        }
      }
    ],
    "time": {
      "from": "now-1h",
      "to": "now"
    },
    "refresh": "30s"
  }
}