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From David Nickerson <davidnickerson4mailingli...@gmail.com>
Subject Re: Adding to a quorum
Date Mon, 18 Jun 2012 22:22:28 GMT
Ted: Thanks for the answer. The quorum of four servers was hypothetical;
our business has not incorporated ZooKeeper yet.

Also, I would imagine that this solution wouldn't work for two servers,
because we'd lose the quorum?

Jordan: Thanks for the link, that looks like it'll be very helpful.

On Mon, Jun 18, 2012 at 2:35 PM, Jordan Zimmerman <jzimmerman@netflix.com>wrote:

> FYI - have a look at our Exhibitor system which makes upgrades/additions
> easier to manage.
>
> https://github.com/Netflix/exhibitor
>
>
> On 6/18/12 11:26 AM, "Ted Dunning" <ted.dunning@gmail.com> wrote:
>
> >Yes.  Updating and restarting works fine.
> >
> >One does wonder why you have *four* servers now.  That generally doesn't
> >provide any advantage over having three servers.
> >
> >On Mon, Jun 18, 2012 at 10:28 AM, David Nickerson <
> >davidnickerson4mailinglists@gmail.com> wrote:
> >
> >> Say I have a quorum of four ZooKeeper servers. Is there any way I can
> >>add a
> >> fifth ZooKeeper to the quorum without interrupting the service? I see
> >>some
> >> work on making it easy
> >> here<https://issues.apache.org/jira/browse/ZOOKEEPER-107>and
> >> here<
> >>
> >>https://cwiki.apache.org/confluence/display/ZOOKEEPER/ClusterMembership
> >,
> >> but I'm wondering if there's currently any way to do it at all. Would it
> >> work to start up the fifth pointing to all of the others, then
> >>one-by-one
> >> restart the others, updating their configuration to include the fifth?
> >>
>
>

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