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Date: Fri, 4 Jul 2014 21:37:41 +1000
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Subject: Re: Running Zookeeper in clustered setup/
From: Cameron McKenzie <mckenzie.cam@gmail.com>
To: user@zookeeper.apache.org
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Glad you got it going. I'm not much help with tuning, but the user guide
has a bit on it. I'm sure some other people on the list will be able to
help you if you have specific questions.
cheers


On Fri, Jul 4, 2014 at 8:29 PM, lalit jangra <lalit.j.jangra@gmail.com>
wrote:

> Thanks Cam,
>
> It was very helpful and i have setup a cluster of 6 nodes on 2 nodes, with
> each node having 3 zookeeper servers and they all talk to each other and i
> could see that.
>
> I could also see that each zookeeper server creates a lots of data and logs
> which are related to transaction logs and snapshots to maintain high
> availability in the system. Currently i have configured everything in nodes
> only but i have read that data & logs should be in separate partition.
>
> Can you help on this? Also are there any more performance tuning guidelines
> available?
>
> Regards.
>
>
> On Fri, Jul 4, 2014 at 12:58 AM, Cameron McKenzie <mckenzie.cam@gmail.com>
> wrote:
>
> > If you're running across two hosts (call them serverA and serverB) in a
> 2+1
> > configuration then your config should be.
> >
> > server.1=serverA:2888:3888
> > server.2=serverA:2889:3889
> > server.3=serverB:2888:3888
> >
> > Then in the configured data directory for each ZooKeeper node you need to
> > set up the myid file appropriately (i.e. It should contain 1 for
> server1, 2
> > for server2, 3 for server 3).
> >
> > cheers
> >
> >
> >
> > On Fri, Jul 4, 2014 at 8:02 AM, lalit jangra <lalit.j.jangra@gmail.com>
> > wrote:
> >
> > > Thanks Cam,
> > >
> > > So i should have either 2+1 or 3+2 Zookeeper servers on these tow nodes
> > to
> > > which both nodes are talking?
> > >
> > > In this case, what should i put in zoo.cfg file for host values as
> > > currently i am using localhost at both nodes.
> > >
> > > server.1=localhost:2888:3888
> > > server.1=localhost:2889:3889
> > > server.1=localhost:28908:3890
> > >
> > > Again how these 3 nodes will form a cluster?
> > >
> > > Regards.
> > >
> > >
> > > On Thu, Jul 3, 2014 at 10:27 PM, Cameron McKenzie <
> > mckenzie.cam@gmail.com>
> > > wrote:
> > >
> > > > hey Lalit,
> > > > I'm not familiar with Apache ManifoldCF, but the configuration
> sounds a
> > > bit
> > > > strange. You've essentially got two independent ZooKeeper clusters
> set
> > > up.
> > > > They won't communicate with each other at all. I'd presume that if
> > you've
> > > > got a database shared between your ManifoldCF instances, that you'd
> > also
> > > > want your ZooKeeper cluster to be shared between these two instances.
> > > >
> > > > In this case, you'd normally run your ZooKeeper nodes across both
> sites
> > > (2
> > > > + 1, or 3 + 2) and then have both of your client (ManifoldCF) nodes
> > > > communicate with this cluster.
> > > >
> > > > Having said that, there may be a reason that ManifoldCF uses two
> > > > independent clusters that don't communicate with each other, I'm not
> > > sure.
> > > >
> > > > cheers
> > > > Cam
> > > >
> > > >
> > > >
> > > > On Fri, Jul 4, 2014 at 7:17 AM, lalit jangra <
> lalit.j.jangra@gmail.com
> > >
> > > > wrote:
> > > >
> > > > > Hi,
> > > > >
> > > > > I am a newbie in Zookeeper are so please apologize for any not so
> > > > relevant
> > > > > question asked.
> > > > >
> > > > > I am running clustered Apache ManifoldCF on two nodes which are
> > > pointing
> > > > to
> > > > > same database. But i need synchronization between both nodes so
> avoid
> > > > race
> > > > > condition while both nodes are working together.
> > > > >
> > > > > For same, as per Apache ManifoldCF guidelines, i am using Zookeeper
> > to
> > > > > manage synchronization in cluster.Also as per ManifoldCF &
> Zookeeper
> > > > > instructions, i have setup & configured two set of three Zookeeper
> > > server
> > > > > at both nodes which are working fine.
> > > > >
> > > > > But i have a clustered setup where both ManifoldCF nodes point to
> > same
> > > > DB ,
> > > > > i am still clueless about how should i proceed to connect Zookeeper
> > > nodes
> > > > > at both servers to make a single setup.
> > > > >
> > > > > Also i am not sure whether it is necessary or not but then the
> > question
> > > > > arises that how two servers & Zookeeper nodes in cluster will talk
> to
> > > > each
> > > > > other?
> > > > >
> > > > > So normally what should be the steps taken once zookeeper servers
> are
> > > > setup
> > > > > to maintain synchronization.
> > > > >
> > > > > Regards,
> > > > > Lalit Jangra.
> > > > >
> > > >
> > >
> > >
> > >
> > > --
> > > Regards,
> > > Lalit Jangra.
> > >
> >
>
>
>
> --
> Regards,
> Lalit Jangra.
>

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