Dario,

I believe that you're looking for TribeNodes
http://www.elasticsearch.org/guide/en/elasticsearch/reference/master/modules-tribe.html

ES is not built to consistently cluster across DC's / larger network lags.

On Fri, Feb 21, 2014 at 11:24 AM, Dario Rossi <[email protected]> wrote:

> Hi,
> I've the following problem: our application publishes content to an
> Elasticsearch cluster. We use local data less node for querying
> elasticsearch then, so we don't use HTTP REST and the local nodes are the
> loadbalancer. Now they came with the requirement of having the cluster
> replicated to another data center too (and in the future maybe another
> too... ) for resilience.
>
> At the very beginning we thought of having one large cluster that goes
> across data centers (crazy). This solution has the following problems:
>
> - The cluster has the split-brain problem (!)
> - The client data less node will try to do requests across different data
> centers (is there a solution to this???). I can't find a way to avoid this.
> We don't want this to happen because of a) latency and b) firewalling
> issues.
>
> So we started to think that this solution is not really viable. So we
> thought of having one cluster per data center, which seems more sensible.
> But then here we have the problem that we must publish data to all clusters
> and, if one fails, we have no means of rolling back (unless we try to set
> up a complicated version based rollback system). I find this very
> complicated and hard to maintain, although can be somewhat doable.
>
> My biggest problem is that we have to keep the data centers in the same
> state at any time, so that if one goes down, we can readily switch to the
> other.
>
> Any ideas, or can you recommend some support to help use deal with this?
>
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