The preferred way of installing Drizzle on Ubuntu is to use the provided deb packages.
Ubuntu 11.04 Natty Narwhal and newer comes with Drizzle .deb files in the standard Ubuntu repositories. You can install Drizzle without any further configuration.
For Ubuntu 10.04 LTS Lucid Lynx and Ubuntu 10.10 Maverick Meerkat there is a PPA with Drizzle 7 binaries at https://launchpad.net/~drizzle-developers/+archive/ppa
As a first step, run the following command:
sudo apt-get install python-software-properties
To add the PPA:
sudo apt-add-repository ppa:drizzle-developers/ppa
sudo apt-get update
The same PPA is also used by drizzle-developers team to publish newer versions of Drizzle than what is included in Ubuntu at the time of release. For instance, at the moment when this was written, Drizzle 7.1.31-rc was available for Ubuntu 11.10 Oneiric, which by default includes Drizzle 7 packages. Hence you can use this PPA on any Ubuntu version to update to the newest available Drizzle version.
To install Drizzle, both the server and the client utilities:
sudo apt-get install drizzle