zookeeper-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Aleksey Yakovlev <aleksey.yakov...@gmail.com>
Subject Re: Zookeeper on two clusters?
Date Fri, 26 Aug 2011 20:39:37 GMT
Camille:

Sorry to say, I can't ping one cluster from another...
You are saying, that all the servers mutual pingability is necessary and
sufficient for ZK to operate, right?

Thanks
AY

On Fri, Aug 26, 2011 at 12:05 PM, Fournier, Camille F. <
Camille.Fournier@gs.com> wrote:

> As long as the two clusters can ping each other, just set up a single ZK
> cluster spread across the two, 3 or 5 nodes (total, not per cluster). Note
> that if these two clusters are used for business continuity purposes (spread
> across 2 data centers), you still risk the outage of the zookeeper if you
> lose one of the data centers (the one containing the majority of the ZK
> nodes).
>
> There's no reason to set up 2 ZK quorums and merge them.
>
> C
>
> -----Original Message-----
> From: Aleksey Yakovlev [mailto:aleksey.yakovlev@gmail.com]
> Sent: Friday, August 26, 2011 10:09 AM
> To: user@zookeeper.apache.org
> Subject: Re: Zookeeper on two clusters?
>
> Mahadev:
>
> I need these two clusters to communicate somehow, because our distributed
> system works on both of them - so we need some coordination, for example,
> to
> recover after failures. I could create my own servers/protocols for that,
> but why - the ZooKeeper does just that, right?
>
> The number 5 isn't important here, configuration and communication is
>
> Thanks
> AY
>
> On Fri, Aug 26, 2011 at 1:55 AM, Mahadev Konar <mahadev@hortonworks.com
> >wrote:
>
> > Aleksey,
> >  I am a little confused. Whats the motivation behind merging the
> > quorums? Why do you want 5 on each cluster?
> >
> > thanks
> > mahadev
> >
> > On Tue, Aug 23, 2011 at 10:24 AM, Aleksey Yakovlev
> > <aleksey.yakovlev@gmail.com> wrote:
> > > Hi,
> > >
> > > We have two clusters but I can't just ssh from one cluster to another -
> I
> > > have to enter a password, use some authentication, go through a load
> > > balancer etc
> > > It would be very useful for us to use the Zookeeper as a common storage
> > > place for small configuration data, accessible from both these
> clusters.
> > >
> > > So, I'm thinking about starting like 5 servers on each cluster and
> merge
> > > them into a single quorum - anybody did that?
> > > If yes, how to configure this double-side quorum?
> > >
> > > (I'm completely new to the Zookeeper)
> > >
> > > Thanks
> > > AY
> > >
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message