告警规则

告警规则采用 Prometheus alerting rules 语法。

groups:
  - name: node
    rules:
      - alert: NodeHighCPU
        expr: 100 - (avg by (instance)(rate(node_cpu_seconds_total{mode="idle"}[5m])) * 100) > 85
        for: 10m
        labels:
          severity: warning
        annotations:
          summary: "{{ $labels.instance }} CPU 使用率过高"

:::note TODO

规则的 CRUD 操作、grouping、抑制、静默的细节需要补齐。

:::