【问题标题】:How to use multiple separate dimensions for custom cloudwatch metrics?如何为自定义 cloudwatch 指标使用多个单独的维度?
【发布时间】:2019-10-21 09:36:31
【问题描述】:

有了这个,我们可以为我们的自定义指标配置维度。

{
   "metrics":{
      "append_dimensions":{
         "AutoScalingGroupName":"${!aws:AutoScalingGroupName}",
         "ImageId":"${!aws:ImageId}",
         "InstanceId":"${!aws:InstanceId}",
         "InstanceType":"${!aws:InstanceType}"
      },
      "metrics_collected":{
         "mem":{
            "measurement":[
               "mem_used_percent"
            ]
         },
         "swap":{
            "measurement":[
               "swap_used_percent"
            ]
         }
      }
   }
}

这给出了类似的东西:

现在我尝试为维度自动缩放组创建警报:

  MemoryAlarmHigh:
   Type: AWS::CloudWatch::Alarm
   Properties:
     EvaluationPeriods: '1'
     Statistic: Average
     Threshold: '70'
     AlarmDescription: Go in Alarm is memory is higher than 70% for 60 seconds
     Period: '60'
     AlarmActions:
     - Ref: ScaleUpPolicy
     Namespace: CWAgent
     Dimensions:
     - Name: AutoScalingGroupName
       Value: !Ref ASG
     ComparisonOperator: GreaterThanThreshold
     MetricName: xxx

这不起作用。我得到的数据不足。 现在当我使用

            {
              "metrics": {
                "append_dimensions": {
                  "AutoScalingGroupName": "${!aws:AutoScalingGroupName}"
                },
                "metrics_collected": {
                  "mem": {
                    "measurement": [
                      "mem_used_percent"
                    ]
                  }
                }
              }
            }

我得到:

警报现在起作用了。但我想使用多个维度,但分别使用它们(如在 EC2 命名空间中),以便我可以使用我的警报。

我该怎么做?

【问题讨论】:

    标签: amazon-web-services amazon-cloudwatch autoscaling amazon-cloudwatch-metrics


    【解决方案1】:

    尝试设置aggregation_dimensions

    像这样:

    {
       "metrics":{
          "append_dimensions":{
             "AutoScalingGroupName":"${!aws:AutoScalingGroupName}",
             "ImageId":"${!aws:ImageId}",
             "InstanceId":"${!aws:InstanceId}",
             "InstanceType":"${!aws:InstanceType}"
          },
          "aggregation_dimensions" : [["AutoScalingGroupName"]],
          "metrics_collected":{
             "mem":{
                "measurement":[
                   "mem_used_percent"
                ]
             },
             "swap":{
                "measurement":[
                   "swap_used_percent"
                ]
             }
          }
       }
    }
    

    https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Agent-Configuration-File-Details.html#CloudWatch-Agent-Configuration-File-Metricssection

    【讨论】:

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