yaml - Fn::Foreach 具有内部函数参数 | Fn::GetAZ |找不到集合

Question

我正在尝试根据Fn::GetAZs'集合动态生成资源:

AWSTemplateFormatVersion: '2010-09-09'
Transform: 'AWS::LanguageExtensions'
Resources:
  Fn::ForEach::CreateSecurityGroups:
    - 'AZIndex'
    - Fn::Split: [",", Fn::GetAZs: !Ref "AWS::Region"]
    - Fn::Sub: SecurityGroup${AZIndex}
      Type: 'AWS::EC2::SecurityGroup'
      Properties:
        GroupDescription: 'SecurityGroup-${AZIndex}'
        GroupName: 
          Fn::Sub: 'SecurityGroup-${AZIndex}'

但是堆栈创建失败，并且在事件中错误是:

转换 AWS::LanguageExtensions 失败:找不到集合或无法解析 Fn::ForEach

如何解决这个问题？

我尝试过的其他方法

所有这些都会重现相同类型的错误。

- Fn::Join:
  - ","
  - Fn::GetAZs: ''

- Fn::GetAZs:
    Ref: 'AWS::Region'

- Fn::GetAZs: ''

Answer 1

我认为该问题是由使用内联 Fn::Sub 引起的，非伪参数不支持该内联函数。这应该有效:

AWSTemplateFormatVersion: '2010-09-09'
Transform: 'AWS::LanguageExtensions'
Resources:
  Fn::ForEach::CreateSecurityGroups:
    - 'AZIndex'
    - Fn::Split: [",", Fn::GetAZs: !Ref "AWS::Region"]
    - 'SecurityGroup${AZIndex}'
      Type: 'AWS::EC2::SecurityGroup'
      Properties:
        GroupDescription: 'SecurityGroup-${AZIndex}'
        GroupName: 
          Fn::Sub: 'SecurityGroup-${AZIndex}'