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From Alexander Shraer <shra...@gmail.com>
Subject Re: Fully redundant installation of ZooKeeper
Date Fri, 09 Jan 2015 21:24:34 GMT

if you're using 3.5.0 you could consider reconfiguring the cluster, e.g.
 remove the servers under maintanance and add them back after you're done.
The removal is logical - they will still continue serving clients unless
shut down, its just these servers will not be counted - a majority of the
remaining servers will be needed.


On Fri, Jan 9, 2015 at 12:50 AM, Kambiz Niktabar <niktabar@yahoo.com.invalid
> wrote:

> Hi,
> We are using ZooKepper ensembles to manage configuration files of our Solr
> environment. Basically our servers are distributed to two different
> physical locations (e.g. Site A and Site B) which every location has its
> own maintenance window for security patching, etc. That means during the
> maintenance time, it might happens that all servers in site A will be
> unavailable.Since the majority of ZooKeeper instances needs to be up and
> running to have ZooKeeper available, this forces us to perform maintenance
> on the site with minority instances manually.I wonder if there is any smart
> way to setup Zookeeper to have fully redundant service for these two
> location without involving any manual job?please advise
> RegardsKambiz Niktabar

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