# Best option for setting Master and Data nodes in Elasticsearch cluster

**URL:** https://discuss.elastic.co/t/best-option-for-setting-master-and-data-nodes-in-elasticsearch-cluster/139327
**Category:** Elasticsearch
**Created:** [July 10, 2018, 10:49am UTC](https://discuss.elastic.co/t/best-option-for-setting-master-and-data-nodes-in-elasticsearch-cluster/139327 "2018-07-10T10:49:35Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![clash\_of\_clanss](https://avatars.discourse-cdn.com/v4/letter/c/da6949/32.png) [@clash\_of\_clanss](https://discuss.elastic.co/u/clash_of_clanss)
#### Post date: [July 10, 2018, 10:49am UTC](https://discuss.elastic.co/t/best-option-for-setting-master-and-data-nodes-in-elasticsearch-cluster/139327/1 "2018-07-10T10:49:36Z")

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Hi,

which is the best option for making elasticsearch cluster high performance, do I need to increase number of master nodes or need to increase data nodes?

Thanks,

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### 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: [July 10, 2018, 1:16pm UTC](https://discuss.elastic.co/t/best-option-for-setting-master-and-data-nodes-in-elasticsearch-cluster/139327/2 "2018-07-10T13:16:00Z")

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Hi,

master eligible nodes shouldn't really have much or any impact on performance. A master eligible node co-ordinates things and there is only one active master node at any time (as far as I know). You can increase redundancy with more master eligible nodes to a point. But that is also only for the tasks that the master node handles. It will not add redundancy for data.

Are you trying to increase any specific part of performance or over all?

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### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 7, 2018, 1:16pm UTC](https://discuss.elastic.co/t/best-option-for-setting-master-and-data-nodes-in-elasticsearch-cluster/139327/3 "2018-08-07T13:16:08Z")

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