Deregistering versions is not intuitive

[richardhboyd]

I hit the maximum number of versions of my resource and it wasn't clear what I should do.

• Am I stuck?
• Can I delete old types?
• Can I update a resource without incrementing the version (useful when developing)?

I eventually figured out that I needed to deregister old versions, but that feature is nested within the deregister-type command and it took longer than I would have liked to figure out I can use that to deregister individual versions of a type.

I'd like to be able to say "deregister-version" and give it an arn to deregister

I'd like to be able to say "deregister-non-default" and give it a type and it will deregister all non-default versions for that type (though I can see how this might be dangerous)

[PatMyron]

can deregister specific versions:

aws cloudformation deregister-type --arn --version-id

---

or request quota increase:

https://console.aws.amazon.com/servicequotas/home/services/cloudformation/quotas/L-EA1018E8 aws service-quotas request-service-quota-increase --service-code cloudformation --quota-code L-EA1018E8 --desired-value

---

or deregister non-default versions with this Python script:

import boto3
client = boto3.client('cloudformation')
for version in client.list_type_versions(Type='RESOURCE', TypeName=type_name)['TypeVersionSummaries']:
  if not version['IsDefaultVersion']:
    client.deregister_type(Arn=version['Arn'])

[richardhboyd]

I went to my doctor and said "My back hurts when I walk up stairs" and my doctor tells me "don't walk up stairs."

I understand that raising the quota can make the problem occur leas frequently, but my issue was more that the ergonomics for deregistering types isn't very deightful.

[glb]

I had to raise a support request to even find out that it was possible to deregister a type. It's odd that cfn-cli supports the rest of the lifecycle but not deregistering.