# LibreNMS CPU使用率監控警報
##### **新增警報規則**
**Severity:警報等級**
**Max alert ：最多通知幾次**
**Delay ：延遲多久再來通知**
**Interval ：通知間隔**
**Transports:選擇傳送類別**
**範例使用CPU>70%持續10分鐘發出警報**
[](https://note.homesitetw.com/uploads/images/gallery/2026-11/sUXimage.png)
**由於多核心CPU預設一顆CPU觸發就會警報，故修改使用平均使用率計算**
**官方解決範本[https://docs.librenms.org/Alerting/Rules/#advanced](https://docs.librenms.org/Alerting/Rules/#advanced)，不過有GROUP語法錯誤告警**
**以下為自訂修改版本搭配警報範本使用，Override SQL記得開啟**
[](https://note.homesitetw.com/uploads/images/gallery/2026-11/image.png)
```
SELECT
devices.device_id,
devices.hostname,
devices.status,
devices.disabled,
devices.ignore,
AVG(processors.processor_usage) AS cpu_avg
FROM devices
INNER JOIN processors ON devices.device_id = processors.device_id
WHERE devices.device_id = ?
AND devices.status = 1
AND devices.disabled = 0
AND devices.ignore = 0
GROUP BY
devices.device_id,
devices.hostname,
devices.status,
devices.disabled,
devices.ignore
HAVING AVG(processors.processor_usage) > 70;
```
##### **新增警報範本**
[](https://note.homesitetw.com/uploads/images/gallery/2026-11/BY5image.png)
```
{{ $alert->title }}
設備名稱: {{ $alert->display }}
@if (!empty($alert->uptime_short))
運行時間: {{ $alert->uptime_short }}
@endif
@if ($alert->state == 0)
持續時間: {{ $alert->elapsed }}
恢復時間: {{ $alert->timestamp }}
@else
告警時間: {{ $alert->timestamp }}
@if ($alert->faults)
@foreach ($alert->faults as $key => $value)
超過10分鐘CPU使用率: {{ (float)$value['cpu_avg'] }} %
@endforeach
@endif
@endif
```
##### **測試**
**這裡先調成>1%做測試**
[](https://note.homesitetw.com/uploads/images/gallery/2026-11/tAaimage.png)
[](https://note.homesitetw.com/uploads/images/gallery/2026-11/v5zimage.png)