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1. the pymysql is needed for the current release[0] 2. it should use keystone_database_address rather than keystone_service_ip, because they may different. [0]: https://github.com/openstack/kolla-ansible/blob/master/ansible/roles/keystone/templates/keystone.conf.j2#L22 Change-Id: I7eb90544bd6be167df157ca352ca01e21ce781bd