http://www.misdivision.com/blog/create-your-own-dynamic-dns-service-using-powerdns-and-mysql

http://gnudip2.sourceforge.net

Here we provide a dynamic DNS service using PowerDNS and MySQL.

yum install pdns pdns-backend-mysql mysql-server vim-enhanced

chkconfig mysqld on
service mysqld start
mysqladmin -u root password 'new-password'
mysqladmin -u root -h <your-server-fqdn> password 'new-password'

Create MySQL database:

mysql -u root -p

CREATE DATABASE powerdns;

GRANT ALL ON powerdns.* TO 'power_admin'@'localhost' IDENTIFIED BY 'power_admin_password';
GRANT ALL ON powerdns.* TO 'power_admin'@'localhost.localdomain' IDENTIFIED BY 'power_admin_password';
FLUSH PRIVILEGES;