alarm.tf

resource "aws_cloudwatch_metric_alarm" "alarm" {
  alarm_name = "dead_man_switch"
  comparison_operator = "LessThanOrEqualToThreshold"
  evaluation_periods = "1"
  statistic = "Average"
  metric_name = "Invocations"
  namespace = "AWS/Lambda"
  period = "60"
  threshold = "0"
  treat_missing_data = "breaching"

  dimensions = {
    FunctionName = aws_lambda_function.dead_man_switch.function_name
  }

  alarm_description = "Grafan is down"
  alarm_actions = [aws_sns_topic.pagerduty_service.arn]
  ok_actions = [aws_sns_topic.pagerduty_service.arn]
}