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This is a short summary of steps you can use to successfully build CentOS and Fedora images capable of take advantage of Openstack's elasticity. In the end, you'll have images that resize the root partition automatically and small enough to serve as base for your instances. I'm showing two different methods since for CentOS I used Linux rootfs resize and for Fedora I used cloud-utils-growpart. For

The players This document describes the architecture that results from a particular OpenStack configuration, specifically: Quantum (or Neutron) networking using GRE tunnels; A dedicated network controller; A single instance running on a compute host Much of the document will be relevant to other configurations, but details will vary based on your choice of layer 2 connectivity, number of running