Open Stack

Hi.
Thank you for your reply.

The first one has a problem because each region is too soft. If a member is
down, so this region is gone.

It is so challenge with us.


Nguyen Huu Khoi


On Tue, Jul 18, 2023 at 2:34 PM Felix Huettner <felix.huettner at mail.schwarz>
wrote:

> Hi,
>
> i think you have two options here:
> 1. you could span a single galera cluster over all of your regions.
>    this might have some latency issues, but if your are not too write
>    heavy that might be fine. I know some companies use that setup.
> 2. you use some kind of multiple galera clusters with replication.
>    But i have not yet heard of anybody using this setup.
>
> An alternative might be to have separate keystone setups with separate
> databases. This would probably reduce the error potential, but might not
> fit your usecase.
>
> Thanks
> Felix
>
>
> On Tue, Jul 18, 2023 at 12:07:12PM +0700, Nguyễn Hữu Khôi wrote:
> > Hello guys,
> >
> > I am going to deploy openstack multi regions and I know that keystone
> > replication is the most challenging.
> >
> > I plan to set up 2 regions which use centralize galera cluster(3 nodes).
> > and one standby edge galera cluster(3 nodes)
> >
> > When region 1 is node available, I will map region 2 to use standby edge
> > galera cluster.
> >
> > I hope  you give me some experience and advice with multi regions.
> >
> > Thank you very much.
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