Wikipedia
Ganeti is a virtual machine cluster management tool developed by Google. The solution stack uses either Xen, KVM or LXC as the virtualization platform, LVM for disk management, and optionally DRBD for disk replication across physical hosts or shared storage for external replication. Since 2007 Ganeti is developed and released as free and open-source software, subject to the requirements of the GNU General Public License (GPL), version 2. The license was changed to the 2-clause BSD license in version 2.11.6.
Ganeti is essentially a wrapper around existing hypervisors which makes it convenient for system administrators to set up a cluster. It is used by Google for some of its Internal Computing Infrastructure and also used by the former Open Source Development Labs (now Linux Foundation) for hosting open source projects. In contrast to cloud-oriented solutions which are designed more towards large-scale, ephemeral VMs, Ganeti focuses on long-lived, persistent VMs which are more amenable to run classic workloads that don't have built-in redundancy.
The first International Ganeti Conference, Ganeticon 2013 was held in Greece from 3rd till . The second and third one were held at Portland State University (in Portland, OR, in September 2014) and Google Prague (in Prague, Czech Republic, in September 2015). The fourth conference is expected to take place at Google's Dublin office, in September 2016.