# Are Multiple Master Nodes in a single Cluster allowed?

**URL:** <https://discuss.elastic.co/t/are-multiple-master-nodes-in-a-single-cluster-allowed/39778>\
**Category:** Elasticsearch\
**Created:** [January 21, 2016, 2:11pm UTC](https://discuss.elastic.co/t/are-multiple-master-nodes-in-a-single-cluster-allowed/39778 "2016-01-21T14:11:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Harish\_Ramanathan](https://avatars.discourse-cdn.com/v4/letter/h/e19b73/32.png) [@Harish\_Ramanathan](https://discuss.elastic.co/u/Harish_Ramanathan)\
**Post date:** [January 21, 2016, 2:11pm UTC](https://discuss.elastic.co/t/are-multiple-master-nodes-in-a-single-cluster-allowed/39778/1 "2016-01-21T14:11:39Z")

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I am new to Elasticsearch. I would like to understand if it is possible to set up 3 Master nodes as part of the same cluster. If possible, what would be the advantage/ use case scenario that prompts multiple Master nodes to be setup as part of the same cluster?

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**Author:** ![jasontedor](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jasontedor/32/66992_2.png) [@jasontedor](https://discuss.elastic.co/u/jasontedor)\
**Post date:** [January 21, 2016, 2:45pm UTC](https://discuss.elastic.co/t/are-multiple-master-nodes-in-a-single-cluster-allowed/39778/2 "2016-01-21T14:45:29Z")

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> [@Harish\_Ramanathan](#):
>
> I would like to understand if it is possible to set up 3 Master nodes as part of the same cluster.

You can have multiple master-_eligible_ nodes, but only one will ever be the active master. Note that in this case you should set `discovery.zen.minimum_master_nodes` to `2`, and however many master-eligible nodes you have this setting should be equal to a quorum (just don't ever have only two master-eligible nodes because then a quorum is two and you don't get high-availability).

> [@Harish\_Ramanathan](#):
>
> If possible, what would be the advantage/ use case scenario that prompts multiple Master nodes to be setup as part of the same cluster?

For high-availability (if the active master falls down, a new one can be elected from the remaining eligible nodes and your cluster can keep on keeping on).

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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:** [July 5, 2017, 11:22pm UTC](https://discuss.elastic.co/t/are-multiple-master-nodes-in-a-single-cluster-allowed/39778/3 "2017-07-05T23:22:31Z")

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