[Openstack-operators] Keystone backed by LDAP: What's still stored locally?

Fischer, Matt matthew.fischer at twcable.com
Mon Feb 10 20:27:50 UTC 2014

If we use LDAP to provide Assignment and Identity for Keystone, what things is keystone still managing locally? The reason I'm asking is that we're setting up Openstack in a couple data centers and would like to centrally manage users/tenants/roles without replicating keystone databases (if that's possible). It looks like Tokens, Catalogs, and Policy are the remaining services. I don't think we'd ever want to replicate Tokens, and the data in Catalogs might differ across DCs anyway, but "Policy" is what I'm not sure about. Is Policy the same as Assignment?

Finally, has anyone else set this up and if so do you have any caveats/must-dos? I think I have all the connection to LDAP stuff figured out but have not tried with multiple keystone instances.

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