Windows spot instance with persistence request using cloudformation-CodePudding

When I try to launch windows server using this template, I get an error:

Property validation failure: [Value of property {/LaunchTemplateData} does not match type {Object}]

I used this template:

Parameters:
  1InstanceType:
    Type: String
    Default: t2.small
    AllowedValues:
      - t2.small
      - m3.medium
      - m3.xlarge
      - i3.xlarge
  2SecurityGroup:
    Type: 'AWS::EC2::SecurityGroup::Id'
  3KeyName:
    Type: 'AWS::EC2::KeyPair::KeyName'
  4LatestAmiId:
    Type: 'AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>'
    Default: /aws/service/ami-windows-latest/Windows_Server-2016-English-Full-Base

Resources:
  Ec2LaunchTemplate:
    Type: AWS::EC2::LaunchTemplate
    Properties:
      LaunchTemplateName: WindowsDesktop
      LaunchTemplateData:
      - ImageId: !Ref 4LatestAmiId
        InstanceType: !Ref 1InstanceType
        SecurityGroups:
          - GroupId: !Ref 2SecurityGroup
        KeyName: !Ref 3KeyName
        InstanceMarketOptions:
          MarketType: spot
          SpotOptions:
            SpotInstanceType: persistent
            InstanceInterruptionBehavior: stop

Similar code works for linux servers. It seems that Windows spot instance (or template) with persistence request can not be created using cloudformation.

CodePudding user response：

The error means that your LaunchTemplateData is not an object, but it is a list in your case. This is because extra - before ImageId. So it should be:

Resources:
  Ec2LaunchTemplate:
    Type: AWS::EC2::LaunchTemplate
    Properties:
      LaunchTemplateName: WindowsDesktop
      LaunchTemplateData:
        ImageId: !Ref 4LatestAmiId
        InstanceType: !Ref 1InstanceType
        SecurityGroups:
          - GroupId: !Ref 2SecurityGroup
        KeyName: !Ref 3KeyName
        InstanceMarketOptions:
          MarketType: spot
          SpotOptions:
            SpotInstanceType: persistent
            InstanceInterruptionBehavior: stop