groups:
  - name: uptime_alerts
    rules:
      - alert: ServiceDown
        expr: probe_success{job="blackbox_http"} == 0
        for: 1m
        labels:
          severity: critical
        annotations:
          summary: "{{ $labels.instance }} est down"
          description: "Le service {{ $labels.instance }} ne répond plus depuis plus d'1 minute."