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Grafana-Monitoring
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Grafana-Monitoring/prometheus/alert.rules.yml

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groups:
- name: system-alerts
rules:
- alert: HighCPUUsage
expr: 100 - (avg by (instance) (irate(node_cpu_seconds_total{mode="idle"}[1m])) * 100) > 80
for: 1m
labels:
severity: warning
annotations:
summary: "⚠️ CẢNH BÁO: CPU cao trên {{ $labels.instance }}"
description: |
💥 Máy chủ: {{ $labels.instance }}
🔥 CPU đã vượt ngưỡng 80% trong hơn 1 phút
📊 Giá trị hiện tại: {{ $value | printf "%.2f" }}%