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[Lance Bragstad <lbragstad@xxxxxxxxx>]

Are you able to recreate this using Newton or master?

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

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https://bugs.launchpad.net/bugs/1644862

Title:
  domain ldap tls_cacertfile "forgotten" in multidomain configuration

Status in OpenStack Identity (keystone):
  New
Status in OpenStack Identity (keystone) mitaka series:
  New

Bug description:
  Environment:
  Centos 7 using the OpenStack Mitaka release

  RPMS from:
  http://mirror.centos.org/centos/7/cloud/$basearch/openstack-mitaka/

  openstack-keystone-9.2.0-1.el7.noarch

  —————

  I have a multidomain configuration with multiple AD backends in
  keystone.

  For one of the AD configurations I've configured a custom
  tls_cacertfile as follows:

  «
  [identity]
  driver = ldap

  [assignment]
  driver = ldap

  [ldap]
  url                      = ldap://dc1.domain1.ca ldap://dc1.domain1.ca
  use_tls                  = true
  …
  »

  For the other:

  «
  [identity]
  driver = ldap

  [assignment]
  driver = ldap

  [ldap]
  url                      = ldap://dc1.domain2.ca ldap://dc2.domain2.ca
  query_scope              = sub
  use_tls                  = true
  tls_cacertfile           = /etc/keystone/domains/domain2-caroot.pem
  …
  »

  What I've observed is when logging in to domain2 I will get very
  inconsistent behaviour:

  * sometimes fails: "Unable to retrieve authorized projects."
  * sometimes fails: "An error occurred authenticating. Please try again later."
  * sometimes fails: "Unable to authenticate to any available projects."
  * sometimes fails: "Invalid credentials."
  * sometimes succeeds

  Example traceback from keystone log:
  «
  2016-11-25 09:54:06.699 27879 INFO keystone.common.wsgi [req-c145506b-69fc-4fc2-9bad-76d77a79e3ca - - - - -] POST http://os-controller.lab.netdirect.ca:5000/v3/auth/tokens
  2016-11-25 09:54:07.147 27879 ERROR keystone.common.wsgi [req-c145506b-69fc-4fc2-9bad-76d77a79e3ca - - - - -] {'info': "TLS error -8179:Peer's Certificate issuer is not recognized.", 'desc': 'Connect error'}
  2016-11-25 09:54:07.147 27879 ERROR keystone.common.wsgi Traceback (most recent call last):
  …
  2016-11-25 09:54:07.147 27879 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/site-packages/ldappool/__init__.py", line 224, in _create_connector
  2016-11-25 09:54:07.147 27879 ERROR keystone.common.wsgi     raise BackendError(str(exc), backend=conn)
  2016-11-25 09:54:07.147 27879 ERROR keystone.common.wsgi BackendError: {'info': "TLS error -8179:Peer's Certificate issuer is not recognized.", 'desc': 'Connect error'}
  »

  I've also tried putting a merged tls_cacertfile containing the system
  default ca roots and the domain2-specific ca root. That felt like it
  improved but did not fix the problem.

  The workaround is putting the merged cacertfile into BOTH domain
  configurations, which should not be necessary. After doing so I
  haven't had any trouble.

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