zookeeper-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Adam Rosien <a...@rosien.net>
Subject Re: Zookeeper multiserver setup?
Date Thu, 10 May 2012 15:16:04 GMT
Should I file a JIRA?

On Wed, May 9, 2012 at 3:24 PM, Patrick Hunt <phunt@apache.org> wrote:

> On Wed, May 9, 2012 at 8:33 AM, Adam Rosien <adam@rosien.net> wrote:
> > I have often gotten confused by the "Node Count" field from stat,
> thinking
> > it meant cluster nodes, not znodes. I have to remind myself every time I
> > see it. Folks amenable to changing the name?
>
> The names are overloaded which is unfortunate, node vs znode vs server
> node vs server instance.... Unfortunately it would be hard to change
> at this point given many third party tools depend on the name. Perhaps
> 4.0?
>
> Patrick
>
> > On Tue, May 8, 2012 at 2:54 PM, Something Something <
> > mailinglists19@gmail.com> wrote:
> >
> >> Hmm...
> >>
> >>
> >> Trying 127.0.0.1...
> >> Connected to localhost.
> >> Escape character is '^]'.
> >> stat
> >> Zookeeper version: 3.3.4-cdh3u3--1, built on 01/26/2012 20:09 GMT
> >> Clients:
> >>  /127.0.0.1:42510[0](queued=0,recved=1,sent=0)
> >>
> >> Latency min/avg/max: 0/0/0
> >> Received: 4
> >> Sent: 3
> >> Outstanding: 0
> >> Zxid: 0x100000000
> >> Mode: follower
> >> Node count: 11
> >> Connection closed by foreign host.
> >>
> >>
> >> Not sure I understand this output.  I have 9 nodes in the ensemble.
> >>
> >> On Tue, May 8, 2012 at 2:45 PM, Jordan Zimmerman <
> jzimmerman@netflix.com
> >> >wrote:
> >>
> >> > Yes - they should. Keep in mind that the zoo.cfg, and the ID file
> must be
> >> > correct and in agreement on each instance. You can do a stat on each
> >> > instance to see what state it's in:
> >> >
> >> >    >telnet localhost 2181
> >> >     stat
> >> >
> >> > -JZ
> >> >
> >> > On 5/8/12 2:43 PM, "Something Something" <mailinglists19@gmail.com>
> >> wrote:
> >> >
> >> > >Thanks Jordan.  Will definitely look at the cluster management tool.
>  In
> >> > >the mean time, am I correct with my assumption in #4?  Once all of
> them
> >> > >are
> >> > >started they would automagically start talking to each other, right?
> >> > >
> >> > >
> >> > >On Tue, May 8, 2012 at 2:36 PM, Jordan Zimmerman
> >> > ><jzimmerman@netflix.com>wrote:
> >> > >
> >> > >> Yes, you must start them all individually. ZooKeeper does not
> >> currently
> >> > >> have any cluster-wide management tools built in.
> >> > >>
> >> > >> FYI - we've open sourced a cluster management tool for ZooKeeper.
> >> Please
> >> > >> have a look:
> >> > >>
> >> > >>        https://github.com/Netflix/exhibitor
> >> > >>
> >> > >> On 5/8/12 2:31 PM, "Something Something" <mailinglists19@gmail.com
> >
> >> > >>wrote:
> >> > >>
> >> > >> >Hello,
> >> > >> >
> >> > >> >Trying to follow directions from here:
> >> > >> >
> >> > >>
> >> > >>
> >> >
> >>
> http://zookeeper.apache.org/doc/trunk/zookeeperAdmin.html#sc_zkMulitServe
> >> > >>r
> >> > >> >Setup
> >> > >> >
> >> > >> >to setup a cluster of zookeepers.
> >> > >> >
> >> > >> >Questions:
> >> > >> >
> >> > >> >1)  If everything is setup correctly, do I have to go to each
> machine
> >> > >>and
> >> > >> >start Zookeeper server in each of them individually?
> >> > >> >2)  I was thinking if I start it on one master machine (well
> there's
> >> no
> >> > >> >real master) then all zookeepers in the quorum would be started,
> but
> >> > >>this
> >> > >> >is not how it works correct?
> >> > >> >3)  If I start individually, then I get messages saying the
other
> >> > >> >zookeepers haven't started.  Is that just a warning?
> >> > >> >4)  When all of them are started, would they all be able to
talk
> to
> >> > >>each
> >> > >> >other?
> >> > >> >
> >> > >> >Sorry for the dumb questions and thanks for the help.
> >> > >>
> >> > >>
> >> >
> >> >
> >>
>

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