MySQL-HA is a project to provide high availability to MySQL database environment. It is a set of utilities that provide high availability for databases using the mysql database server. includes ip address takeover, using a master node and a slave one. You find out more about this project by following the links provided below.
the goal of MySQL-HA is to provide a freely available and community supported clustering tool kit based on MySQL, and focused on service availability. The developers say that they dissect that sentence to reveal that it's not just a quick marketing trick, but a real mission statement.
MySQL-HA project site
MySQL-HA home page