适用于CloudWatch警报的AWS CloudFormation模板：如何通过ElasticSearch节点而不是整个ElasticSearch集群使用指标来描述警报

Question

我有适用于CloudWatch警报的CloudFormation模板，可与ElasticSearch集群中的指标配合使用，这里是：

...
Resources:
  EsCPUUtilizationTooHighAlarm:
    Type: "AWS::CloudWatch::Alarm"
    Properties:
      AlarmName: "es-cpu-utilization-too-high"
      AlarmActions:
      - !Ref AlarmsSnsTopic
      AlarmDescription: "ES cluster CPU usage above 80%"
      ComparisonOperator: "GreaterThanThreshold"
      TreatMissingData: "missing"
      Dimensions:
      - Name: ClientId
        Value: !Ref "AWS::AccountId"
      - Name: DomainName
        Value: !Ref ElasticsearchCluster
      EvaluationPeriods: 1
      MetricName: "CPUUtilization"
      Namespace: "AWS/ES"
      Period: "300"
      Statistic: "Average"
      Threshold: "80"
...

如您所见，此警报跟踪来自整个ElasticSearch集群的指标，但我想创建几个此类警报并分别跟踪每个ElasticSearch节点。 如何使用CloudFormation模板描述此类CloudWatch警报？

Answer 1

《 管理Amazon Elasticsearch Service域》文档列出了可用于集群中每个单独实例的指标，主要涉及线程池和JVM指标。

有一个SysMemoryUtilization指标，定义为The percentage of the instance's memory that is in use 。