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From Ted Dunning <ted.dunn...@gmail.com>
Subject Re: The idea behind 'myid'
Date Fri, 25 Sep 2009 15:51:48 GMT
A server doesn't have a unique IP address.

Each interface can have 1 or more IP addresses and there can be many
interfaces.  Furthermore, an IP address can move from one machine to
another.

2009/9/25 Ørjan Horpestad <orjanh@gmail.com>

> Hi Ben
>
> Well, im just wondering why the server's own unique IP-address isn't
> good enough as a valid identifyer; it strikes me to be a bit
> exhausting to manually set the id for each server in the cluster. Or
> maybe there is some details im not getting here  :-)
>
> Regards, Orjan
>
> On Fri, Sep 25, 2009 at 3:56 PM, Benjamin Reed <breed@yahoo-inc.com>
> wrote:
> > can you clarify what you are asking for? are you just looking for
> > motivation? or are you trying to find out how to use it?
> >
> > the myid file just has the unique identifier (number) of the server in
> the
> > cluster. that number is matched against the id in the configuration file.
> > there isn't much to say about it:
> > http://hadoop.apache.org/zookeeper/docs/r3.2.1/zookeeperStarted.html
> >
> > ben
> >
> > Ørjan Horpestad wrote:
> >>
> >> Hi!
> >> Can someone pin-point me to a site (or please explain ) where I can
> >> read about the use of the myid-file for configuring the id of the
> >> ZooKeeper servers?
> >> I'm sure there is a good reason for using this approach, but it is the
> >> first time I have come over this type of non-automatic way for
> >> administrating replicas.
> >>
> >> Regards, Orjan
> >>
> >
> >
>



-- 
Ted Dunning, CTO
DeepDyve

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