无法通过 Terraform 在 cloudwatch 警报中使用单位

Question

我正在尝试使用 Terraform 创建 AWS cloudwatch 警报。

resource "aws_cloudwatch_metric_alarm" "rds_networkreceivethroughput" {
  alarm_name          = "rds_network_receive_throughput"
  comparison_operator = "GreaterThanOrEqualToThreshold"
  evaluation_periods  = "5"
  metric_name         = "NetworkReceiveThroughput"
  namespace           = "AWS/RDS"
  period              = "60"
  statistic           = "Average"
  threshold           = "10"
  unit                = "Megabytes/Second"
  alarm_description   = "The incoming (Receive) network traffic on the DB instanceis greater than threshold"
  treat_missing_data  = "notBreaching"

  alarm_actions = [
    "${aws_sns_topic.my_sns.arn}",
  ]

  dimensions {
    "DBInstanceIdentifier" = "${var.rds_instance_identifier}"
  }
}

我能够创建 cloudwatch 警报，但未应用该单元。应用的单位是10 Bytes/Second，而不是10 Megabytes/Second。 我错过了什么吗？

Answer 1

AWS RDS 不支持NetworkReceiveThroughput 以兆字节/秒为单位，而仅支持Bytes/second。您可以在Cloudwatch user guide 中阅读有关可用选项的信息。

也就是说，我有点惊讶 AWS API 不只是在您身上出错，而​​不是选择唯一可能的单位。