如何使用 CloudFormation 为特定 Lambda 设置 Lambda 警报？

Question

这是来自AWS document的CloudFormation Alarm的结构。

Type: "AWS::CloudWatch::Alarm"
Properties:
  ActionsEnabled: Boolean
  AlarmActions:
    - String
  AlarmDescription: String
  AlarmName: String
  ComparisonOperator: String
  Dimensions:
    - Dimension
  EvaluateLowSampleCountPercentile: String
  EvaluationPeriods: Integer
  ExtendedStatistic: String
  InsufficientDataActions:
    - String
  MetricName: String
  Namespace: String
  OKActions:
    - String
  Period: Integer
  Statistic: String
  Threshold: Double
  TreatMissingData: String
  Unit: String

但是，它似乎为总 lambda 函数指标的数字设置了警报，而不仅仅是针对特定函数，我找不到任何关于为特定函数设置警报的提及。

如何为特定功能设置闹钟？

Answer 1

要对特定 lambda 函数的指标发出警报，您必须设置 FunctionName 维度。

例如这样：

  MyNewAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmName: "AlarmNameGoesHere"
      AlarmDescription: "Alarm if lambda errors out too many times"
      Namespace: "AWS/Lambda"
      MetricName: "Errors"
      Dimensions:
      - Name: "FunctionName"
        Value: "NameOfYourLambdaFunction"
      Statistic: "Sum"
      ComparisonOperator: "GreaterThanThreshold"
      Threshold: 0
      EvaluationPeriods: 5
      Period: 60
      TreatMissingData: "breaching"