how to add IAM role to an existing instance in aws?

Question

I would like to add an IAM Role to an existing EC2 instance in AWS. I tried using AWS CLI. However, I could not find a way to do that.

Answer 1

if you are getting "The association is not the active association" error when trying to attach a role to a existing EC2 instance then you should:

1. detach the existing role from the existing EC2 instance.
2. attach a new role to the existing EC2 instance.

once you do that, you will be able to attach a role to an existing EC2 instance.