Adam, More information here: https://stackoverflow.com/questions/24694296/using-zookeeper-with-solr-but-only-have-2-servers Unless ZK can be instantly "reconfigured" to consider the remaining 3 as a full ensemble, I don't see an option. Steph
+1.314.452.2896 (Tel/SMS) On Tue, May 1, 2018 at 11:53 AM, Adam Blank <adam.bl...@gmail.com> wrote: > Thanks for your replies, Steph. Adding back the rest of the mailing list. > If anyone can shed some light on my predicament that would be much > appreciated. > > Adam > > ---------- Forwarded message ---------- > From: Steph van Schalkwyk <svanschalk...@gmail.com> > Date: Tue, May 1, 2018 at 12:44 PM > Subject: Re: Configuring SolrCloud with Redundancy on Two Physical Frames > To: Adam Blank <adam.bl...@gmail.com> > > > Maybe one of the ZK gurus could chime in? I could test it but I don't have > the time right now. > > > +1.314.452.2896 (Tel/SMS) > > On Tue, May 1, 2018 at 11:42 AM, Adam Blank <adam.bl...@gmail.com> wrote: > > > I think I would still run into the same issue since if one frame goes > down > > I will only have 50% of ZK instances still up, and my understanding is > that > > a ZK cluster requires a majority to be up in order to operate. So if I > have > > 6 total I'd need 4 to be up. > > > > > > On Tue, May 1, 2018, 12:34 PM Steph van Schalkwyk < > svanschalk...@gmail.com> > > wrote: > > > >> Only thing I can think of is to run three ZK instances on each hardware > >> instance. That way if one fails you still have three running on the > other > >> hardware instance. > >> Also, when you set up the SOLR instances, make sure you're sharding > >> across hardware instances, for example two shards per collection on > >> instance 0 and two on the other. > >> S > >> > >> +1.314.452.2896 (Tel/SMS) > >> > >> On Tue, May 1, 2018 at 10:17 AM, Adam Blank <adam.bl...@gmail.com> > wrote: > >> > >>> Hi Steph, > >>> > >>> I should have provided some more info. I am running on AIX. If I'm > >>> understanding your comment correctly, the issue I'm having isn't with > being > >>> able to run multiple ZK instances on a single server. The issue is > with > >>> setting up ZK and SOLR in a way that it can survive either frame > failure. > >>> I wonder if setting up a virtual IP for the ZK instances and having > SOLR > >>> connect to the VIP would work if all ZK instances share the same data > >>> directory on a shared drive? I was hoping someone has encountered this > >>> situation before, but if not, I can see if that idea would work. > >>> > >>> Thanks, > >>> Adam > >>> > >>> On Tue, May 1, 2018 at 10:59 AM, Steph van Schalkwyk < > >>> svanschalk...@gmail.com> wrote: > >>> > >>>> Adam, is it possible to virtualize in any way? > >>>> As for single physical instances, I have been running three instances > >>>> of ZK > >>>> on one VM quite comfortably. This is only for dev/testing, though. > >>>> Regards > >>>> Steph > >>>> > >>>> > >>>> +1.314.452.2896 (Tel/SMS) > >>>> > >>>> On Tue, May 1, 2018 at 9:55 AM, Adam Blank <adam.bl...@gmail.com> > >>>> wrote: > >>>> > >>>> > Hello, > >>>> > > >>>> > I would like to have a high-availability/redundant installation of > >>>> > Zookeeper running in my production environment. The problem is that > I > >>>> only > >>>> > have 2 physical frames available, so that rules out configuring a > >>>> Zookeeper > >>>> > cluster/ensemble since I'd only have redundancy if the frame with > the > >>>> > minority of servers goes down. What is the best practice in this > >>>> situation? > >>>> > Is it possible to have a separate standalone install running on each > >>>> frame > >>>> > connected to the same set of SOLR nodes or to use one server as > >>>> primary and > >>>> > one as backup? > >>>> > > >>>> > Thank you, > >>>> > Adam > >>>> > > >>>> > >>> > >>> > >> >
