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 <jungleb...@gmail.com> wrote: > > On 9/9/2018 10:58 PM, Adam Spiers wrote: > > Hi James, > > > > James Penick <jpen...@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 > >
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