# Add new master to the ES cluster

**URL:** <https://discuss.elastic.co/t/add-new-master-to-the-es-cluster/376000>\
**Category:** Elasticsearch\
**Tags:** elastic-stack-monitoring, elastic-stack-security\
**Created:** [March 17, 2025, 11:02am UTC](https://discuss.elastic.co/t/add-new-master-to-the-es-cluster/376000 "2025-03-17T11:02:14Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![RainTown](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/raintown/32/140206_2.png) [@RainTown](https://discuss.elastic.co/u/RainTown)\
**Post date:** [March 17, 2025, 11:11am UTC](https://discuss.elastic.co/t/add-new-master-to-the-es-cluster/376000/2 "2025-03-17T11:11:20Z")

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While noting this topic is being discussed in another thread too

> [@Migrate node from master + data to data only](https://discuss.elastic.co/t/migrate-node-from-master-data-to-data-only/375882/11):
>
> Hi @leandrojmp sorry one more question do you see any issue if i add one extra master node to existing cluster that make total master to be 4 , like breaking some quoram ? Any additional step or operation i need to do to make cluster stable ?

what is your rationale to make a 4th master node?

In case of your 5-node cluster, it's certainly better to have a 6-node cluster with 3x masters and 3x data. But a 7-node cluster, 4x master and 3x data, would seem to me to add very little, if 2 masters are unavailable you will have problems.

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