Setting up a Percona/Galera MySQL Cluster

vito, this was a great writeup, thanks. I've got stock MySQL running with multi-master replication (with an additional off-network slave for local backups); I've been looking at Percona recently and looking for a better clustering setup.

You don't really mention what kind of production environment these are set up in. What's the load like, how big/small are your clusters, any pitfalls you've run into?