Talk:Release 0 minimal infrastructure

Question 1:

Hi, Can anyone kindly explain me what is the openstack controller/ openvim controller mentioned in the multi data centre configuration diagram. Isn't it the use of 3rd server to install this so called controllers? Or else We need 4 servers minimum per DC to setup multi-data centre environment?

Answer 1 (Gerardo García):

OSM interfaces to VIMs (e.g. Openstack Controller, Openvim controller), which, in turn, deploy VMs in compute nodes.

If you just want to run OSM components, all you need is one server for running the 3 components.

If you want to deploy VNFs, you will need a VIM and a compute node. In this page we recommend at least one server for the VIM (controller) and one server for a compute. Different deployment options are possible.

In a multidatacenter environment, it is exactly the same. If you just want to run OSM components, all you need is one server for running the 3 components. Besides, you need the datacenters: for each datacenter, you will need a controller/VIM and a set of compute nodes.

Comment (Pamuditha): Thanks Gerardo. I think the diagram is little bit misleading. As you can see multi-data center diagram show 3 server boxes + 1 box( name openstack controller) per data center implying it like 4 servers. I completely get that we need 3 servers for OSM components + VIM + Compute Node.

Comment (Gerardo): I decided to use a box for controllers instead of a server picture since I wanted to add some text inside detailing the role. But I get your point that the diagram might be confusing on the actual needs. Difficult to paint anyway. Any suggestions?

Comment (Pamuditha) Adding some note below the diagram will clarify to any reader. Also anyone who gets confused like me might refer to discussion page I suppose. Thanks Gerardo for immediate response.