Your company owns an on-premises Ubuntu server in a local data center where several legacy applications are running. You want to use AWS CodeDeploy to deploy new application revisions to this particular on-premises instance but firstly you need to register the server in CodeDeploy and use an IAM user to perform the authentication. Which of the following methods is the most appropriate?

Answer options:

A.Create an IAM role for the on-premises server and assign the CodeDeploy permissions to the role. Use the register AWS CLI command to bind the IAM role with the server.
B.Include the IAM user in the CodeDeploy configuration file. Install the CodeDeploy agent in the server with the configuration file and the server will be registered in CodeDeploy automatically.
C.Use the AWS CLI command deploy register to create an IAM user for the on-premises server, save the IAM credentials to the configuration file in the server and register it with CodeDeploy.
D.Use the AWS CLI command deploy tag-resource to create an IAM user for the on-premises server, register it with CodeDeploy, and add a tag to the server. CodeDeploy will deploy new revisions to the server based on this particular tag.

Correct Answer – C
Option A is incorrect because when working with on-premises instances for CodeDeploy, the AWS CLI command register can only register an IAM user instead of an IAM role for the authentication.
Option B is incorrect because the server cannot be registered automatically. You will need to use the register command to register the on-premises instance.
Option C is CORRECT because the register command can create an IAM user for the server and register the server with CodeDeploy. The following is an example:
aws deploy register --instance-name AssetTag12010298EX --tags Key=Name,Value=CodeDeployDemo-OnPrem --region us-west-2
Option D is incorrect because the tag-resource CLI command is used to associate a list of tags with the resources and cannot register the on-premises servers with CodeDeploy.
Reference:
https://docs.aws.amazon.com/codedeploy/latest/userguide/on-premises-instances-register.html,
https://docs.aws.amazon.com/codedeploy/latest/userguide/instances-on-premises-register-instance.html.