Error You must specify a region when running command aws ecs list-container-instances

Question

I am trying to use aws container service as per the documentation in http://docs.aws.amazon.com/AmazonECS/latest/developerguide/ECS_GetStarted.html

The below error is th

Answer 1

I think you need to use for example:

aws ecs list-container-instances --cluster default --region us-east-1

This depends of your region of course.