Cross account and resource-level permission

[claude]

Hello,

in Section-Based – Configuration Management and Infrastructure as Code (DevOps),

the following Question :

A multinational company is using multiple AWS accounts for its global cloud architecture. The AWS resources in their production account are shared among various business units of the company. A single business unit may have one or more AWS accounts that have resources in the production account. Recently, there were a lot of incidents in which the developers from a specific business unit accidentally terminated the Amazon EC2 instances owned by another business unit. A DevOps Engineer was tasked to come up with a solution to only allow a specific business unit who owns the EC2 instances and other AWS resources to terminate their own resources.

How should the Engineer implement a multi-account strategy to satisfy this requirement?

inherits the following response :

Centrally manage all of your accounts using AWS Organizations. Group your accounts, which belong to a specific business unit, to individual Organization Units (OU). Set up an IAM Role in the production account which has a policy that allows access to the EC2 instances including resource-level permission to terminate the instances owned by a particular business unit. Associate the cross-account access and the IAM policy to every member accounts of the OU.

Can you please detail : “a policy that allows access to the EC2 instances including resource-level permission to terminate the instances owned by a particular business unit.”

How can a single policy be used by multi account since there’s no aws:account variable in IAM ?

In my comprehension, several roles are needed for such use case.

thanks for your help,

BR, CB.

[Jon-Bonso]

Hi Claude,

To accomplish this, you can add the aws:PrincipalOrgPaths condition in the policy of your IAM Role. Set the value to the organizational unit ID of the caller in the resource-based policy attached to your resource.

For more information, please refer here:

https://aws.amazon.com/blogs/security/iam-share-aws-resources-groups-aws-accounts-aws-organizations/

Let us know if you need further assistance. The Tutorials Dojo team is dedicated to help you pass your AWS exam on your first try!

Regards,

Jon Bonso @ Tutorials Dojo

• This reply was modified 3 years, 11 months ago by  Jon-Bonso.

[claude]

Hello,

Thank you very much for explanations. I’m definetely learning a lot here !

BR,

CB.

• This reply was modified 3 years, 11 months ago by  claude.

[Jon-Bonso]

You’re welcome, Claude! Glad to hear that you find our content helpful!