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From Cameron McKenzie <mckenzie....@gmail.com>
Subject Re: Running Zookeeper in clustered setup/
Date Thu, 03 Jul 2014 21:27:53 GMT
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.


On Fri, Jul 4, 2014 at 7:17 AM, lalit jangra <lalit.j.jangra@gmail.com>

> 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.

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