For each of my "domain controllers, I run: OpenLDAP, an MIT Kerberos KDC, and a PowerDNS server. The KDC and PowerDNS both get their data from LDAP on 127.0.0.1, and LDAP changes are synchronized between all the nodes.
This is convenient because you don't have to synchronize zone files on multiple hosts.
I use custom /bin/sh-based config management system, but you can probably get the gist of it here:
https://github.com/cullumsmith/infrastructure/blob/master/sc...
https://github.com/cullumsmith/infrastructure/blob/master/fi...