Hi, 1) in Keystone we are currently working on implementing domain manager persona that allows certain person on a "customer" side to do project and user operations. This includes explicit listing of users in a domain 2) this is conceptually wrong to talk about users in a project, since users are owned by domains and can get access to multiple projects within the domain (and with some tricks to other domains). So you are partially right that role assignments is the way of figuring out access of users to projects. One more challenge though is that such access can be granted using user groups. In this case you actually should also resolve groups access to the desired project. Hope this helps, Artem ---- typed from mobile, auto-correct typos assumed ---- On Thu, Jul 11, 2024, 20:34 Thamanna Farhath <thamanna.f@zybisys.com> wrote:

Hello openstack community, I am currently working on an OpenStack kolla ansible 2023.1. I have created a custom role " owner "

*Objective:*

1. Users with the owner role can only list users within their project. 2. Avoid additional API calls for filtering users by project.

*Current Challenge:* Using direct API calls, the list users API currently returns all users without any project-specific filtering. While additional API calls to the role_assignments endpoint can achieve the desired filtering, this approach is not efficient and doesn't restrict access at the API level.

I am considering defining custom Keystone policies to achieve this restriction. However, I am unsure how to properly configure these policies to enforce project-specific access control effectively.

Thanks in advance

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