How to register EC2 Instance to ECS cluster?

Question

I have started 2 ECS optimized instances on EC2, but how can I register them as ECS container instances ?

Can not figure out a way of doing that.

Answer 1

When you create an EC2 instance, you must specified the IAM role linked to your ECS container (if using SDK/..., you must specified the "Instance Profile ARN" of this role in the parameters), if you use the interactive ECS cluster creation at your first ECS use on the aws website, you should already have an ecsInstanceRole link to the default cluster.

Then, after being launched, your EC2 instance will be automatically register as ECS container in this cluster.