Launch Templates can use SSM parameters for AMI ID

[claytonolley]

Hello all, I often get Terraform plans that are only updating the AMI ID on the launch templates, however I only use SSM Parameters that the lambda's inject directly at launch time. I see that AWS Launch Templates support SSM Parameters out of the box though so is there a way we can forego the regular data call and just specify our SSM Parameters in place of the ami id?

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/create-launch-template.html#use-an-ssm-parameter-instead-of-an-ami-id

[npalm]

I was not aware of this feature, the AMI id can be managed via SSM, but the scale-up lambda will ignore in that cate the once in the launch template.

[claytonolley]

Link to related discussion - #4460 (comment)