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 <orj...@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 <br...@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
