OpenStackDNS is designed to integrate virtual machines managed by openstack
into an existing Powerdns system.  As virtual machines are created and deleted
within openstack, thier A and PTR records are updated in Powerdns via the
gmysql database backend.

On the openstack side, openstackdns monitors the RabbitMQ AMQP queue for messages
related to creating and removing servers.  Openstackdns can run anywhere as
long as it has access to the queue.  Additionally, multiple instances of
openstackdns can be ran at the same time to provide high availability.

On the powerdns side, the server needs to be configured to point to a mysql
database via the gmysql backend (take a look at pdns.conf.templ).  An example of the
initial records required for the database are in the dns.sql file.

Openstackdns is configured via the a config file (dns.conf).  The config
defines the location and login of the RabbitMQ queue, the location and login
for mysql that powerdns points to and the forward and reverse zone names
associated with the virtual machines.  An example init script is
openstack-dns.init.