# How to configure 2 clusters in 5.6.2 **URL:** \ **Category:** Elasticsearch\ **Created:** [October 16, 2017, 10:35am UTC](https://discuss.elastic.co/t/how-to-configure-2-clusters-in-5-6-2/104080 "2017-10-16T10:35:47Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![gringogordo](https://avatars.discourse-cdn.com/v4/letter/g/a87d85/32.png) [@gringogordo](https://discuss.elastic.co/u/gringogordo)\ **Post date:** [October 16, 2017, 10:35am UTC](https://discuss.elastic.co/t/how-to-configure-2-clusters-in-5-6-2/104080/1 "2017-10-16T10:35:47Z")
I'm upgrading an application to use 5.6.2 rather than 2.4.1 and I'm trying to change our design a bit that moved from PoC to production a few years ago & never changed. So essentially in the existing system we a have a one node cluster. The index is built in the target folder of a java app using NodeClient. We then stop ElasticSearch on the test/UAT/live server and copy the index over to refresh the data. This has some advantages - atomic and separate until it has passed verification, and some disadvantages - manual, requires taking the service down. My plan is to rewrite the java app using the ElasticSearch Java Rest Client and create the new index on a separate cluster (this may evolve to being an alias instead I think but baby steps...). In this way I'm hoping that I will be able to slowly evolve the application to a more automated deployment (they will always want to view the new index before deployment I think so I don't think we'll ever evolve to a live update situation). I would be interested if anyone has any reassurance or negative comments about this as a strategy but my main question is, sadly, a lot more basic. In the old version the cluster was stored in its own folder in the data directory, so something like E:\ES\_HOME\data\appdatadev on dev, E:\ES\_HOME\data\appdatauat on UAT, E:\ES\_HOME\data\appdata on live, etc. The first thing I had to do when upgrading to 5.6.2 was to remove this named cluster folder so that the nodes folder is in data -\> E:\ES\_HOME\data\nodes (as apposed to E:\ES\_HOME\data\appdatadev\nodes for example). I'm now struggling to find a reference to how I have to separate clusters running on the same instance ? I'm sure I read a reference to this a couple of days ago when I set it up but I can't find it now. Can anyone point me in the right direction ? Thanks. ---
**Author:** ![A\_B](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/a_b/32/17104_2.png) [@A\_B](https://discuss.elastic.co/u/A_B)\ **Post date:** [October 16, 2017, 1:19pm UTC](https://discuss.elastic.co/t/how-to-configure-2-clusters-in-5-6-2/104080/2 "2017-10-16T13:19:14Z")
As far as I know, nodes join clusters based on the cluster name. So, as long as you name the cluster differently in the elasticsearch config file, you should be fine šŸ™‚ ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [October 16, 2017, 1:32pm UTC](https://discuss.elastic.co/t/how-to-configure-2-clusters-in-5-6-2/104080/3 "2017-10-16T13:32:26Z")
Iā€™m often running elasticsearch using different path.data dir. ``` bin/elasticsearch -Epath.data=cluster1 ``` Something like that ---
**Author:** ![gringogordo](https://avatars.discourse-cdn.com/v4/letter/g/a87d85/32.png) [@gringogordo](https://discuss.elastic.co/u/gringogordo)\ **Post date:** [October 18, 2017, 12:03pm UTC](https://discuss.elastic.co/t/how-to-configure-2-clusters-in-5-6-2/104080/4 "2017-10-18T12:03:48Z")
Thanks both. I've not done too much with this yet as I've realised I need to move from the TransportClient to the High & Low level Rest Clients. I think the param answer is more suited as once I work out how to send the param (currently getting unknown setting which is a bit irritating!) I think this is the more easily configurable. ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [October 18, 2017, 12:17pm UTC](https://discuss.elastic.co/t/how-to-configure-2-clusters-in-5-6-2/104080/5 "2017-10-18T12:17:14Z")
> currently getting unknown setting which is a bit irritating! Which setting? ---
**Author:** ![gringogordo](https://avatars.discourse-cdn.com/v4/letter/g/a87d85/32.png) [@gringogordo](https://discuss.elastic.co/u/gringogordo)\ **Post date:** [October 18, 2017, 12:28pm UTC](https://discuss.elastic.co/t/how-to-configure-2-clusters-in-5-6-2/104080/6 "2017-10-18T12:28:23Z")
Sorry I thought I'd copy & pasted it > unknown setting [index.path.data] (although I am passing it in as [path.data]) ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [October 18, 2017, 1:07pm UTC](https://discuss.elastic.co/t/how-to-configure-2-clusters-in-5-6-2/104080/7 "2017-10-18T13:07:28Z")
Can you describe exactly what you are doing and with which version because I just tried locally the command I pasted earlier and it is working well? ---
**Author:** ![gringogordo](https://avatars.discourse-cdn.com/v4/letter/g/a87d85/32.png) [@gringogordo](https://discuss.elastic.co/u/gringogordo)\ **Post date:** [October 19, 2017, 8:57am UTC](https://discuss.elastic.co/t/how-to-configure-2-clusters-in-5-6-2/104080/8 "2017-10-19T08:57:07Z")
Hi, Apologies I've wandered into a bit of a mess as I thought I was tidying up some java code and have slowly moved to the idea of a complete rewrite as I thought I've move from 2.4 to 5.6 while I was there. You've give me a massive amount of help on a different thread and I as a result I think I was getting a bit twisted up between old and new approaches (current working code xml config, initial attempt code config with TransportClient, now low & high level rest client). FYI I was doing this in various forms (with a file object, relative & absolute path I think) ``` Settings indexSettings = Settings.builder() .put("index.number_of_shards", 1) .put("index.number_of_replicas", 0) .put("path.data", "folderPath") // .put("cluster.name", "DevCuster") .build(); ``` To be honest I was taking this path when I thought I was making minor mods to the elasticSearch part of the code (just moving it from xml config to code config) but now I know it is such a major re-working I think I will take a step back and try and choose the best way forward for building a replacement 'index-set'/cluster first (aliases, new indexes or all indexes under a new cluster), before pushing forward. Probably out of the scope of this question! Thanks for your help. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 16, 2017, 8:57am UTC](https://discuss.elastic.co/t/how-to-configure-2-clusters-in-5-6-2/104080/9 "2017-11-16T08:57:07Z")
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