I agree with Michael. We need to use the OpenStack tooling.
Sahara is encountering some of the same issues we are as they are building
up their hadoop VM/clusters.
See
http://docs.openstack.org/developer/sahara/userdoc/vanilla_plugin.html
It seems to me there are two major approaches to the Octavia VM design:
1. Start with a standard Linux distribution (e.g. Ubuntu 14.04 LTS) and
install HAProxy 1.5 and Octavia control layer
2. Develop a minimal purpose driven distribution (similar to m0n0wall)
with just HAProxy,
I am investigating building scripts that use diskimage-builder
(https://github.com/openstack/diskimage-builder) to create a purpose
built image. This should allow some flexibility in the base image
and the output image format (including a path to docker).
The definition of purpose built is open
