[Openstack-operators] "Master" keystone and "sub" keystone

Adam Young ayoung at redhat.com
Mon Sep 28 19:31:54 UTC 2015

On 09/26/2015 11:19 PM, RunnerCheng wrote:
> Hi All,
> I'm a newbie of keystone, and I'm doing some research about it 
> recently. I have a question about how to deploy it. The scenario is on 
> below:
> One comany has one headquarter dc and 5 sub dc locate in different 
> cities. We want to deploy separate OpenStack with "sub" keystone at 
> the sub dc, and want to deploy one "master" keystone at headquarter 
> dc. We want to manage all users, roles and tenants etc on the "master" 
> keystone, however we want the end-user can authenticate with the "sub" 
> keystone where he or she is locate.

Use LDAP for the users, don't keep them in Keystone.

Replicate roles, projects etc from master to sub.

Use Fernet tokens.  Replicate revocation events both ways.

> Is anyone understant this scenario? How to realize it without 
> additionaly development?
> Thanks in advance!
> Sam Cheng
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> OpenStack-operators at lists.openstack.org
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