对如何从cloudwatch api获取大量指标感到困惑

我需要对我的各种amazon ec2实例进行一些监控,因此我的计划最初是创建一个带有数字小部件的仪表板,并选择我感兴趣的各种事情,例如“CPUUtilization”,然后我可以获取该仪表板并访问所有这些当前度量值。然而,当我打电话获取仪表板时,我收到的身体是:

{"widgets"=>[{"type"=>"metric", "x"=>0, "y"=>0, "width"=>24, "height"=>6, "properties"=>{"view"=>"singleValue", "metrics"=>[["AWS/EC2", "CPUUtilization", "InstanceId", "i-0ea0081d91f6e4aff"], [".", "DiskWriteBytes", ".", "."], [".", "CPUCreditUsage", ".", "."], [".", "StatusCheckFailed", ".", "."], [".", "NetworkPacketsIn", ".", "."], [".", "NetworkOut", ".", "."], [".", "StatusCheckFailed_System", ".", "."], [".", "CPUCreditBalance", ".", "."], [".", "StatusCheckFailed_Instance", ".", "."], [".", "NetworkIn", ".", "."], [".", "NetworkPacketsOut", ".", "."], [".", "DiskReadBytes", ".", "."], [".", "DiskWriteOps", ".", "."], [".", "DiskReadOps", ".", "."]], "region"=>"us-east-1"}}]}

1) 它想要一个单一指标?尽管文档描述了该方法“列出了指定的指标”

输入是一个对象,而不是数组,要使用此方法,我必须执行以下操作:

client.list_metrics({
  namespace: "AWS/EC2",
  metric_name: "CPUUtilization",
  dimensions: [
    {
      name: "InstanceId", 
      value: "i-0fc0181c98e6e4a66"
    },
  ],
})

#<struct Aws::CloudWatch::Types::ListMetricsOutput metrics=[#<struct Aws::CloudWatch::Types::Metric namespace="AWS/EC2", metric_name="CPUUtilization", dimensions=[#<struct Aws::CloudWatch::Types::Dimension name="InstanceId", value="i-0fc0181c98e6e4a66">]>], next_token=nil>

这导致2)它只返回度量名称,没有实际值。。。

我做错了什么?

我如何简单地为各种实例ID请求一系列指标,并得到包含我请求的指标的实际指标值的响应?