<p>I deployed a EKS cluster and I'd like to add more IAM users to the role. I read this doc <a href="https://docs.aws.amazon.com/eks/latest/userguide/add-user-role.html" rel="nofollow noreferrer">https://docs.aws.amazon.com/eks/latest/userguide/add-user-role.html</a> and it mentioned how to map IAM users or roles to k8s but it doesn't say how to map IAM group. Is it not supported? or is there a way to do that? I don't want to map many users one by one. When a new user join the team, I just move them to the IAM group without changing anything in EKS.</p>

<p>You can't.  You can only map roles and users.  Directly from the <a href="https://docs.aws.amazon.com/eks/latest/userguide/add-user-role.html" rel="nofollow noreferrer">documentation</a> you linked:</p>
<blockquote>
<ol start="3">
<li>Add your IAM users, roles, or AWS accounts to the configMap. You cannot add IAM groups to the configMap.</li>
</ol>
</blockquote>
<p>The easiest workaround would be to have a different IAM role for each group and only grant that group the ability to assume that role.</p>
