AWS CloudWatch儀表板CloudFormation配置

Question

我正在嘗試使用基本小部件來配置儀表板以公開CpUUtilization指標。 我無法引用之前創建的EC2實例，因為似乎在描述儀表板的json中沒有解釋！Ref函數。

metrics": [
        "AWS/EC2",
        "CPUUtilization",
        "InstanceId",
        "!Ref Ec2Instance"
]

知道如何通過邏輯名稱引用它嗎？

Answer 1

您可以使用Fn::Join將內部函數（如Ref ）的輸出與字符串組合在一起。 例如：

  CloudWatchDashboardHOSTNAME:
    Type: "AWS::CloudWatch::Dashboard"
    DependsOn: Ec2InstanceHOSTNAME
    Properties:
      DashboardName: HOSTNAME
      DashboardBody: { "Fn::Join": [ "", ['{"widgets":[
          {
            "type":"metric",
            "properties":{
              "metrics":[
                ["AWS/EC2","CPUUtilization","InstanceId",
                 "', { Ref: Ec2InstanceHOSTNAME }, '"] 
              ],
              "title":"CPU Utilization",
              "period":60,
              "region":"us-east-1"
            }
          }]}' ] ] } 

文檔：

• Fn :: Join - AWS CloudFormation
• 參考 - AWS CloudFormation
• AWS :: CloudWatch :: Dashboard - AWS CloudFormation
• 儀表板主體結構和語法 - Amazon CloudWatch