在Cloudwatch仪表板模板（Cloudformation）中使用伪变量 [英] Use Pseudo Variables in Cloudwatch Dashboard Template (Cloudformation)

问题描述

我正在尝试设置一个Cloud Formation模板来创建一个Cloudwatch-Dashboard。
在这种情况下，我想使用伪变量来确定区域。

I am trying to set up a Cloud Formation Template to create a Cloudwatch-Dashboard. In this context I want to use the Pseudo Variable to ascertain the Region.

如果我只是使用伪变量 AWS ::地区代码似乎不起作用：

If I simply use the Pseudo Variable AWS::Regionthe code doesnt seem to work:

AutoscalingDashboard:
Type: AWS::CloudWatch::Dashboard
Properties:
  DashboardName: AutoscalingDashboard
  DashboardBody: '
     {
      "widgets":[
        {
            "type":"metric",
            "x":0,
            "y":0,
            "width":12,
            "height":6,
            "properties":{
                "metrics":[
                    [ "AWS/ECS", "MemoryUtilization", "ServiceName", "invoice_web", "ClusterName", "InvoicegenappCluster" ],
                    [ "...", "invoice_data", ".", "." ],
                    [ "...", "invoice_generator", ".", "." ]
                ],
                "region": "AWS::Region",
                "period": 300,
                "view": "timeSeries",
                "title":"ECS MemoryUtilization",
                "stacked": false
            }

如何使用伪变量 AWS :: Region 或 Ref 函数动态地保留变量？

How can I use the Pseudo Variable AWS::Region or a RefFunction to keep the variables dynamically?

Merci A

推荐答案

在您的示例中， DashboardBody 是一个字符串，因此 AWS :: Region 不会被替换。
通过添加 Fn :: Sub 函数，例如：

In your example, the DashboardBody is a string, therefore AWS::Region will not get replaced. You'll probably be better by adding the Fn::Sub function, like:

AutoscalingDashboard:
  Type: 'AWS::CloudWatch::Dashboard'
  Properties:
    DashboardName: 'AutoscalingDashboard'
    DashboardBody: !Sub >-
     {
      "widgets":[
         {
            "type":"metric",
            "x":0,
            "y":0,
            "width":12,
            "height":6,
            "properties":{
                "metrics":[
                    [ "AWS/ECS", "MemoryUtilization", "ServiceName", "invoice_web", "ClusterName", "InvoicegenappCluster" ],
                    [ "...", "invoice_data", ".", "." ],
                    [ "...", "invoice_generator", ".", "." ]
                ],
                "region": "${AWS::Region}",
                "period": 300,
                "view": "timeSeries",
                "title":"ECS MemoryUtilization",
                "stacked": false
            }           
          }]
      }

请注意该区域周围的 $ {} 以及YAML 阻止字符串>- 。

Notice the ${} around the region, and also the YAML block string >-.

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