[Bug 1775224] Re: "Create User" and "Delete User" buttons are missing for a domain admin user

[David Ames]

** Changed in: charm-openstack-dashboard
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1775224

Title:
  "Create User" and "Delete User" buttons are missing for a domain admin
  user

Status in OpenStack openstack-dashboard charm:
  Fix Released
Status in horizon package in Ubuntu:
  Invalid

Bug description:
  The setup with xenial + Queens UCA and 18.02 charms is as follows:
  https://paste.ubuntu.com/p/BQn3JHr5yZ/

  adma and admb are users with Admin role granted on their respective domain level so they can manage users, groups and roles due to how policy rules shipped via charms are structured http://paste.ubuntu.com/p/ybpvMsmWHC/
      "identity:create_user": "rule:cloud_admin or rule:admin_and_matching_user_domain_id",

  While it is possible to do CRUD on users from CLI, e.g. adma user can
  create new users in domain a, there is no visible way to do that from
  the dashboard for create and delete operations ("edit" dropdowns are
  visible, see the screenshot).

  A user with an admin-project/domain scoped token has that ability and sees all necessary buttons (https://specs.openstack.org/openstack/keystone-specs/specs/mitaka/is_admin_project.html, see
  https://github.com/openstack/keystone/blob/stable/queens/keystone/conf/resource.py#L59-L77)

  The problem does not seem to be related to oslo.policy directly
  (policy files seem to be correct) - just to how horizon handles domain
  administrators.

  It is possible to create users from the dashboard without using a
  button by directly invoking the modal window via accessing the right
  URL directly: http://<horizon-address>/identity/users/create/ (see the
  screenshot below). Filling out the form and submitting it results in a
  successful creation of a new domain user.

  Note: for Groups only the "Create button is present" while the
  "Delete" button is not present.

  See also:
  1) the same type of bug but for roles https://bugs.launchpad.net/ubuntu/+source/horizon/+bug/1775227
  2) "delete groups" https://bugs.launchpad.net/ubuntu/+source/horizon/+bug/1775229

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