Amazon ECS will discontinue support for short service Amazon Resource Names

Rack (Version 2)
1

Hello Convox Community

We recently received this notification from AWS:

Starting April 4, 2026, Amazon ECS will discontinue support for short service Amazon Resource Names (ARNs) and automatically migrate any ECS services with short service ARNs to the long service ARN format. This change affects only ECS services created with the short service ARN format.

How this will impact our Convox racks (Rack version 2, currently running version 20240513194424) ?

Thanks

2

Hi @Nick-Convox ,
Maybe you have an answer to my concern?
Is this an issue we have to address?

Thanks in advance.
Eric

3

Hey @eravelo,

No action needed on the rack itself. v2 racks have supported the long-form service ARN for years, and AWS will auto-migrate any lingering short ARNs on 4 Apr 2026 without downtime.

The only thing to double-check is any custom IAM policy, script, or alert that hard-codes the short ARN. swap those to wildcards or the new long string and you’re set. Anything created on or before 31 Dec 2020 will still have the old “short” service-ARN (unless you manually migrated it later). AWS closed the opt-out window on 1 Apr 2021, so anything created after that date is automatically long-form

Regards,
Nick

4

Hey @Nick-Convox,

Crystal clear! Thanks a lot for the explanation.
Regards,
Eric