CloudFormation声明参数时是否只支持"Type":"String"？

Question

当你在 CloudFormation 中声明参数时，你必须设置一个 "Type"。在我的实验中，"String" 似乎是唯一受支持的值。如果是这样，这个属性的用途是什么？

在AWS Documentation on parameters中没有提到"Type"支持哪些值。但是，它包含一个示例，表明没有整数类型。 "WebServerPort" 也声明为 "String"，尽管端口总是整数：

"Parameters" : {
   "InstanceType" : {
      "Type" : "String",
      "Default" : "m1.small",
      "Description" : "EC2 instance type, e.g. m1.small, m1.large, etc."
   },
   "WebServerPort" : {
      "Type" : "String",
      "Default" : "80",
      "Description" : "TCP/IP port of the web server"
   },
   "KeyName" : {
      "Type" : "String",
      "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the web server"
   }
}

Answer 1

除String外，还有Number、List<Number>、CommaDelimitedList以及各种AWS-Specific Parameter Types:

AWS::EC2::AvailabilityZone::Name
AWS::EC2::Image::Id
AWS::EC2::Instance::Id
AWS::EC2::KeyPair::KeyName
AWS::EC2::SecurityGroup::GroupName
AWS::EC2::SecurityGroup::Id
AWS::EC2::Subnet::Id
AWS::EC2::Volume::Id
AWS::EC2::VPC::Id
AWS::Route53::HostedZone::Id
List<AWS::EC2::AvailabilityZone::Name>
List<AWS::EC2::Image::Id>
List<AWS::EC2::Instance::Id>
List<AWS::EC2::SecurityGroup::GroupName>
List<AWS::EC2::SecurityGroup::Id>
List<AWS::EC2::Subnet::Id>
List<AWS::EC2::Volume::Id>
List<AWS::EC2::VPC::Id>
List<AWS::Route53::HostedZone::Id>

有关详细信息，请参阅 Properties section of the Parameters CloudFormation 文档。

_{请注意，指南的文档 linked to in the question was specifically regarding the Parameters Property within the AWS::CloudFormation::Stack Resource, which is why the documentation was limited there. The Template Anatomy 部分包含有关模板结构的更完整信息。}

CloudFormation声明参数时是否只支持"Type":"String"？

Does CloudFormation only support "Type": "String" when declaring parameters?

amazon-web-services

amazon-cloudformation