[one-users] Libvirt ruby binding integration

[Marco Sinhoreli]

Hi Javier,

I think, to abstract the information about the hosts and virtual
machines, to use a ruby binding libvirt[1] and to connect with remote
hosts, instead of use ssh to remote connections, use the libvirt
feature to remote connections [2] [3].

I can help with something. I'm interested in a high performance
orchestration system, and the opennebula, initially seems be the best.
I think to use one with more than thousand physical servers executing
different services.


[1] http://libvirt.org/ruby/
[2] http://libvirt.org/remote.html
[3] http://libvirt.org/uri.html


Regards,

On Thu, Jan 8, 2009 at 1:22 PM, Javier Fontan <jfontan at fdi.ucm.es> wrote:
>
> Hello Marco,
>
> Your proposal is interesting and we are thinking in doing that for the next
> release. It will probably be a generic libvirt driver configurable to use
> various protocols and hypervisors. Until we do this you can modify the
> driver to do what you want. In this method
> (http://trac.opennebula.org/browser/one/branches/one-1.2/src/vmm_mad/kvm/one_vmm_kvm.rb#L158)
> is the code that calls virsh to perform actions:
>
> --8<------
>    def exec_kvm_command(host, command)
>        Open3.popen3(
>            "ssh -n #{host} virsh #{command} ;"+
>            " echo ExitCode: $? 1>&2")
>    end
> ------>8--
>
> I think you can change it to something similar to:
>
> --8<------
>    def exec_kvm_command(host, command)
>        Open3.popen3(
>            "virsh -c qemu://#{host}/ #{command} ;"+
>            " echo ExitCode: $? 1>&2")
>    end
> ------>8--
>
> I have not tried this change but it can not be very different to that.
>
> Bye
>
>
> On Jan 7, 2009, at 10:03 PM, Marco Sinhoreli wrote:
>
>> Hi all,
>>
>> I'm  new in list and as opennebula user. I'm studying a system to
>> orchestrate our infrastructure and I found the opennebula on Xen.org
>> site. Reading the opennebula documentation, I look that is possible to
>> use libvirt to interact with one system. Well, I have a doubt: Is
>> possible too to use the libvirt to remote connection with the libvirtd
>> located on dom0 instead of ssh? I thinks that, to scale for a lot of
>> hypervisors, I could have problems with ssh because the system needs
>> some levels and parsers for abstract informations about the virtuals
>> environments.
>>
>> Best regards,
>>
>> --
>> Marco Sinhoreli
>> _______________________________________________
>> Users mailing list
>> Users at lists.opennebula.org
>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
> --
> Javier Fontan, Grid & Virtualization Technology Engineer/Researcher
> DSA Research Group: http://dsa-research.org
> Globus GridWay Metascheduler: http://www.GridWay.org
> OpenNebula Virtual Infrastructure Engine: http://www.OpenNebula.org
>
>



-- 
Marco Sinhoreli