// Aula 29 - Regras de alerta parte2

groups:
 - name: node_alerta
   rules:
    - record: job:up:avg
      expr: avg without(instance)(up{job="node"})
    - alert: MuitosHostsInativos
      expr: (avg without(instance)(up{job="windows"}) < 0.5 and on() hour() >= 8 < 18)
      for: 5m