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Excerpts from Anton Massoud's message of 2013-12-17 06:14:36 -0800:
> Hi,
> Could keystone HA active/active?
> Any hints or links how to do that if possible ? Any special setting that is required

Keystone is basically stateless if configured to use only the SQL and
Memcache backends. Both of those can be made active/active. So just put
a load balancer in front of keystone and point it at an HA database,
and you're good to go.