HP Cloud uses Percona XtraDB Cluster (Galera) in their DNS-as-a-Service application. With the help of Percona consulting services, they built a fully automated Chef based installation procedure and were pleased with the simplicity of managing a Galera Cluster: "I am very pleased at the architecture we have chosen for the database component of our DNSaaS and encourage anyone who needs a simple MySQL-based HA solution for their application to consider using such a setup." says Patrick Glabraith of HP. Read more...