[Openstack-operators] Cinder HA with zookeeper or redis?
jpenick at gmail.com
Mon Sep 10 20:39:07 UTC 2018
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.
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!)
> 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: 
> 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.
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