Open Stack

Hi!

These day I try to find way to let VM instances access information
that a cloud controller has. VM instances already have a limited
way to get information by using server meta-data system.
But meta-data don't look customizable and I'm not sure that this spot
is a good starting point for providing additional data to VMs.
I want to give a specific VM instance a full VM list in a tenant
which is too big to be put into meta-data and dynamic.

Any suggestions and experiences are welcome!