amazon-web-services - Cloudformation 无法解析参数 - VolumeAttachment

Question

我正在尝试实现一个 Cloudformation 模板，它将现有的 EBS 卷安装到现有的 EC2 实例。这是我使用的代码:

AWSTemplateFormatVersion: "2010-09-09"
Description: MountEBStoDev
Parameters:
  EBSVolumeID:
    Description: The volume we want to attach to the instances
    Type: "List<AWS::EC2::Volume::Id>"
  InstanceIdToMount:
    Description: The instance to attach the volume to
    Type: "List<AWS::EC2::Instance::Id>"

Resources:
 MountPoint:
  Type: "AWS::EC2::VolumeAttachment"
  Properties:
    Device: /dev/sdh
    InstanceId: !Ref InstanceIdToMount
    VolumeId: !Ref EBSVolumeID

运行堆栈时，用户可以选择所需的 EBS 和 EC2 实例，我可以看到选择后正确指定了参数，但 Cloudformation 无法附加 EBS 并出现错误

"Value of property InstanceId must be of type String"

我怀疑参数类型中的列表是罪魁祸首，但我没有找到其他方法让用户可以从可用实例/EBS 中进行选择(除了静态列表)。

任何帮助将不胜感激。

Answer 1

看起来 AWS::EC2::Instance::Id 和 AWS::EC2::Volume::Id 是 supported parameter types ，因此您只需更改代码即可使用它们。就像这样:

AWSTemplateFormatVersion: "2010-09-09"
Description: MountEBStoDev
Parameters:
  EBSVolumeID:
    Description: The volume we want to attach to the instances
    Type: "AWS::EC2::Volume::Id"
  InstanceIdToMount:
    Description: The instance to attach the volume to
    Type: "AWS::EC2::Instance::Id"

Resources:
 MountPoint:
  Type: "AWS::EC2::VolumeAttachment"
  Properties:
    Device: /dev/sdh
    InstanceId: !Ref InstanceIdToMount
    VolumeId: !Ref EBSVolumeID