The Raspberry Pi Dramble is a cluster of Raspberry Pi 2 computers that runs Drupal 8.

The cluster is configured and maintained using a set of Ansible playbooks available on GitHub: Raspberry Pi Dramble, by Jeff Geerling (aka geerlingguy on Drupal.org).

Jeff Geerling is the author of Ansible for DevOps, and hosts the Raspberry Pi Dramble website (which you're currently viewing) on his Dramble cluster, in the basement of his home in St. Louis, MO.

This website is a fun experiment to work within the limitations of (relatively) slow hardware, a (very) slow residential uplink, and other constraints, to build a robust and high-performance Drupal 8 infrastructure. Or at least as robust and high-performance it can be ;)