# Alert for any instance that is unreachable for >1 minute.
ALERT InstanceDown
  IF up == 0
  FOR 1m
  LABELS { severity = "page" }
  ANNOTATIONS {
    summary = "Instance {{ $labels.instance }} down",
    description = "{{ $labels.instance }} of job {{ $labels.job }} has been down for more than 1 minute.",
  }

# Alert for any instance that is under high load for >1 minute.
ALERT HighLoad
  IF node_load1 > 0.85
  FOR 1m
  LABELS { severity = "page" }
  ANNOTATIONS {
    summary = "Instance {{ $labels.instance }} is under high load",
    description = "{{ $labels.instance }} of job {{ $labels.job }} has been under high load for more than 1 minute.",
}