CODEWITHSUNDEEP
aws-cloudformation
shantanuo
shantanuo

Reputation: 32296

Add custom AMI to the list of Parameters

This part of cloudformation template works as expected:

Parameters:
  LatestAmiId:
    Type: 'AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>'
    Default: /aws/service/ami-amazon-linux-latest/amzn-ami-hvm-x86_64-ebs

But when I changed it to something like this, I get an error:

Parameters:
  LatestAmiId:
    Type: 'AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>'
    Default: /aws/service/ami-amazon-linux-latest/amzn-ami-hvm-x86_64-ebs
    AllowedValues:
      - /aws/service/ami-amazon-linux-latest/amzn-ami-hvm-x86_64-ebs
      - ami-XXadfa6e17bbca4XX

I want to allow 2 values for LastestAmiId field. I will use this value in Properties:

  MySpotFleet:
    Type: 'AWS::EC2::SpotFleet'
    Properties:
      SpotFleetRequestConfigData:
        LaunchSpecifications:
          - ImageId: !Ref LatestAmiId

This works if I keep only 1 SSM Parameter value as shown above. But how do I allow my custom AMI along with default AMI?

Upvotes: 1

Views: 326

Answers (1)

Marcin
Marcin

Reputation: 238051

Sadly you can't do this, since ami-XXadfa6e17bbca4XX is not the type of AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>.

You need to have two separate parameters, e.g. LatestAmiId and LatestAmiId2 with their respective types. Then use conditions in your template to choose between the one which is selected by the user.

Upvotes: 1

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