[one-users] Little help with first building cloud

[Fabian Wenk]

Hello Matheus

On 23.11.2011 12:39, matheus tor4 wrote:
> I have only two servers (With VT) and two Core2Duo (Without VT). I want to
> build a little private cloud.

I have a system with Core2Duo CPU which does support VT, so I am 
not sure if this is not available for all Core2Duo CPUs or not, 
but check out [1], this could probably help you to enable VT on 
this systems (if available) too.

   [1] 
http://en.wikipedia.org/wiki/X86_virtualization#Intel_virtualization_.28VT-x.29

Else as pointed out in a other recent post to this mailing list, 
you could use XEN on this two systems without VT, but then you 
are limited to paravirtualization. As far as I know, the guest OS 
in the VM needs to support this.

> My doubt is the following:
> - Can I use a server as Front-End +  Image Repository + Cluster at the same
> time?

You can, I have running the front end and the cluster node on a 
single system. When adding the "local" cluster node, I used 
'onehost create localhost im_kvm vmm_kvm tm_nfs'. Also adding the 
other systems as cluster nodes will be possible.

> - Or, It's more advantageous use a Core2Duo as a Front-End and release all
> resources of the server to be use by cloud?

This depends on the usage of the OpenNebula cloud as a whole. On 
a rather small installation, it is probably not a problem to use 
the front end also as a cluster node.


bye
Fabian