Debian/Ubuntu installing Percona DB

Percona apt Repository

Debian and Ubuntu packages from Percona are signed with a key. Before using the repository, you should add the key to apt. To do that, run the following commands:

$ apt-key adv --keyserver keys.gnupg.net --recv-keys 1C4CBDCDCD2EFD2A

Add this to /etc/apt/sources.list, replacing VERSION with the name of your distribution:

deb http://repo.percona.com/apt VERSION main #for debian wheezy or squeeze
deb-src http://repo.percona.com/apt VERSION main #for debian wheezy or squeeze

Remember to update the local cache:

$ apt-get update

After that you can install the server and client packages

# apt-get install percona-server-server-5.5 percona-server-client-5.5 

http://www.percona.com/doc/percona-server/5.5/installation/apt_repo.html