[Openstack] Fuel + Controller Node HA

Mitch Anderson mitch at metauser.net
Wed Apr 9 17:08:31 UTC 2014


The requirement for 3 Controller Nodes comes from the use of MySQL Galera
Clustering, it requires a minimum of 3 nodes to minimize split brain.  Tho,
there is a way to run it with two, where you run a service to act as a
third voting member of the cluster, just would not contain or respond to
any sql queries.



On Wed, Apr 9, 2014 at 10:11 AM, Alexandre De Carvalho <
alexandre7.decarvalho at gmail.com> wrote:

> Hi,
>
> I don't understand why we need 3 Controllers Nodes to do HA.
>
> It's not possible to do that with 2 Controllers Nodes ?
>
>
> Thanks
>
> --
> Best regards,
> Alexandre
>
>
>
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