PowerDNS server can be used by Designate as its underlying back end. This section describes how to configure an existing or deploy a new PowerDNS server for Designate.
The default PowerDNS configuration for Designate uses the Designate worker
role. If you need live synchronization of DNS zones between Designate
and PowerDNS servers, you can configure Designate with the
pool_manager role. The Designate Pool Manager keeps records
consistent across the Designate database and the PowerDNS servers.
For example, if a record was removed from the PowerDNS server
due to a hard disk failure, this record will be automatically restored
from the Designate database.