Open Stack

Ah ok so this is a case of no ones documented it, but it's do-able.

If anyone out there has done it we'd be happy to take your notes! Otherwise
we'll figure it out and upstream the process.

thanks!
-James

On Mon, Sep 10, 2018 at 2:18 PM Jay S Bryant <jungleboyj at gmail.com> wrote:

>
> On 9/9/2018 10:58 PM, Adam Spiers wrote:
> > Hi James,
> >
> > James Penick <jpenick at gmail.com> wrote:
> >> Hey folks,
> >> Does anyone have experience using zookeeper or redis to handle HA
> >> failover
> >> in cinder clusters?
> >
> > I'm guessing you mean failover of an active/passive cinder-volume
> > service?
> >
> >> I know there's docs on pacemaker, however we already
> >> have the other two installed and don't want to add yet another
> >> component to
> >> package and maintain in our clusters.
> >
> > I'm afraid I don't, but if you make any progress on this, please let
> > me know as it would be great to document:
> >
> >  - how this would work
> >  - any pros and cons vs. Pacemaker
> >
> > and maybe I can help with that.
> >
> > One particular question: if the node running the service becomes
> > unreachable, is it safe to fail it over straight away, or is fencing
> > required first?  (I'm pretty sure I've asked this same question
> > before, but I can't remember the answer - sorry!)
> James,
>
> I echo Adam's input.  I have only heard of people implementing with
> pacemaker but there is no reason that this couldn't be tried with other
> HA solutions.
>
> If you are able to try it and document it would be great to add
> documentation here:  [1]
>
> Also, Gorka Eguileor is a good contact as he has been doing much of the
> work on HA Cinder though his focus is on Active/Active HA.
>
> Let us know if you have any further questions.
>
> Thanks!
> Jay
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20180910/5ef4b9a2/attachment.html>