k8s.alert.rules

ALERT service_down
  IF up == 0

ALERT APIHighInvocationRate
  IF sum ( rate(gateway_function_invocation_total{code="200"}[10s]) ) by (function_name) > 5 
  FOR 5s
  LABELS {
    service = "gateway",
    severity = "major",
    value = "{{$value}}"
  }
  ANNOTATIONS {
    summary = "High invocation total on {{ $labels.instance }}",
    description =  "High invocation total on {{ $labels.instance }}"
  }