In order to run AWS monitoring scripts (http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/mon-scripts-perl.html) on one of my ec2 existing instance, I need a IAM
There is a new method available associate-iam-instance-profile to Associates an IAM instance profile with a running or stopped instance.
associate-iam-instance-profile
Example:
aws ec2 associate-iam-instance-profile --instance-id YourInstanceId --iam-instance-profile Name=YourNewRole-Instance-Profile
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