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[Lance Bragstad <lbragstad@xxxxxxxxx>]

** Also affects: keystone/rocky
   Importance: Undecided
       Status: New

** Changed in: keystone/rocky
       Status: New => In Progress

** Changed in: keystone/rocky
   Importance: Undecided => High

** Changed in: keystone/rocky
     Assignee: (unassigned) => Lance Bragstad (lbragstad)

** Changed in: keystone/train
    Milestone: None => train-rc1

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https://bugs.launchpad.net/bugs/1843609

Title:
  Domain-specific domain ID resolution breaks with system-scoped tokens

Status in OpenStack Identity (keystone):
  In Progress
Status in OpenStack Identity (keystone) rocky series:
  In Progress
Status in OpenStack Identity (keystone) stein series:
  In Progress
Status in OpenStack Identity (keystone) train series:
  In Progress

Bug description:
  System-scope was introduced in Queens [0] but recently we discovered a
  weird case where system users aren't able to do things they should be
  able to with system-scoped tokens when domain-specific drivers are
  enabled.

  For example, they are unable to list groups or users because the API
  logic for GET /v3/groups and GET /v3/users tries to resolve a domain
  ID from the request [1]. If domain-specific drivers are enabled and
  there isn't a domain ID associated to the request (either with a
  domain-scoped token or a project-scoped token) the API returns a 401,
  which makes no sense from the context of a system user [2].

  You can recreate this locally by enabling domain-specific drivers in
  keystone.conf [3] and running the test_groups or test_users v3
  protection tests using:

    $ tox -e py37 -- keystone.tests.unit.protection.v3.test_groups

  Observed failures:
  https://pasted.tech/pastes/b45c6b015b97c865018c4b3290f60e0456fe304a.raw

  This isn't blocking the gate because domain-specific drivers are off
  by default and the logic short-circuits [4].

  [0] http://specs.openstack.org/openstack/keystone-specs/specs/keystone/queens/system-scope.html
  [1] https://opendev.org/openstack/keystone/src/branch/master/keystone/api/groups.py#L84
  [2] https://opendev.org/openstack/keystone/src/branch/master/keystone/server/flask/common.py#L917-L943
  [3] https://pasted.tech/pastes/e8ffce7a3377b960dd88de8c88e2ccfd173ec726.raw
  [4] https://opendev.org/openstack/keystone/src/branch/master/keystone/server/flask/common.py#L924-L926

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