Percona MySQL quick setup
Get the additional keys so that your server will trust the percona repo:
gpg --keyserver hkp://keys.gnupg.net --recv-keys 1C4CBDCDCD2EFD2A gpg -a --export CD2EFD2A | apt-key add -
Add this to /etc/apt/sources.list, replacing VERSION with the name of your distribution:
nano /etc/apt/sources.list
Add the following:
deb http://repo.percona.com/apt squeeze main deb-src http://repo.percona.com/apt squeeze main
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