# Cluster expansion
**URL:** https://discuss.elastic.co/t/cluster-expansion/145886
**Category:** Elasticsearch
**Created:** [August 24, 2018, 10:22am UTC](https://discuss.elastic.co/t/cluster-expansion/145886 "2018-08-24T10:22:54Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Tuckson](https://discuss.elastic.co/u/Tuckson)
#### Post date: [August 24, 2018, 10:22am UTC](https://discuss.elastic.co/t/cluster-expansion/145886/1 "2018-08-24T10:22:54Z")
Hi,
Until now we had an elk stack consisting of 2 servers, 1 kibana/logstash and 1 with elastichsearch on it.
Since we expect our data to multiply, I would like to expand the single ES node to a cluster. So I got 5 extra vm's with enough resources, installed ES on it and am puzzling now what to do.
I can find a lot on moving to a new cluster, but actually this is a live system and I want the current node to stay the node which is contacted by logstash and kibana.
Please correct me if doing something stupid, but what I had in mind was this:
New servers become ES datanodes.
Current server becomes client/master node (I can combine these in 1 node, right?)
Now my question is how I can I make the current data available on the new servers and then have it function the way I want it? Or is it strongly advised to take another approach?
Thnx
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 21, 2018, 10:22am UTC](https://discuss.elastic.co/t/cluster-expansion/145886/2 "2018-09-21T10:22:56Z")
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