[one-users] HA vs LB for OpenNebula controller

[Carlos Martín Sánchez]

Hi,

You can't have 2 different OpenNebula daemons managing the VMs, because all
the data is cached, and that would cause inconsistency issues.
Both of them will try to monitor the VMs and Hosts, and the schedulers will
deploy VMs without any synchronization.

Is there any reason you need to do that? I always assumed the opennebula
start time is waaaay too low to consider this need.

Regards
--
Carlos Martín, MSc
Project Engineer
OpenNebula - The Open-source Solution for Data Center Virtualization
www.OpenNebula.org | cmartin at opennebula.org |
@OpenNebula<http://twitter.com/opennebula><cmartin at opennebula.org>



On Sat, Oct 13, 2012 at 8:28 PM, Alberto Zuin - Liste
<liste at albertozuin.eu>wrote:

> I know OpenNebula server isn't an essential piece for the cloud life: in
> case of failure of OpenNebula server the VM still up and running.
> But now I'm the situation of making some tests setup for OpenNebula
> Colud Controller in HA, just to research.
> I already tested a setup of 2 cloud controllers in HA with HeartBeat
> without any problems, but I want to try a step over: do you known if
> it's possible to configure 2 active nodes with OpenNebula? Obviously
> using a MySQL datastore instead of SQLite to permit multiple concurrent
> access.
> Thanks,
> Alberto Zuin
>
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