The current version of Operating System running on ECS Fargate task?

Hi, I would suggest to just use linux command 'uname -a' from within a container running in your Fargate implementation.

See https://en.wikipedia.org/wiki/Uname

That should give you some interesting details, in particular, the linux kernel version.

Best,

Didier

It is possible to connect to a running container using ECS Exec in the following document.
Use this to access the container and check the contents of the OS version file (/etc/os-release) or run the "uname -a" command to check the contents.
https://docs.aws.amazon.com/AmazonECS/latest/userguide/ecs-exec.html
https://aws.amazon.com/jp/blogs/containers/new-using-amazon-ecs-exec-access-your-containers-fargate-ec2/

If you are trying to check if it is running on X86_64 or ARM64, you can check the cpuArchitecture on Runtime platform from Task Definition. This will let the scheduler knows which is the Fargate instance architecture that should be used.