# Is it okay to have multiple ES nodes on one machine?

**URL:** <https://discuss.elastic.co/t/is-it-okay-to-have-multiple-es-nodes-on-one-machine/217486>\
**Category:** Elasticsearch\
**Created:** [February 1, 2020, 8:31am UTC](https://discuss.elastic.co/t/is-it-okay-to-have-multiple-es-nodes-on-one-machine/217486 "2020-02-01T08:31:13Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Arman\_Ajdani](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/arman_ajdani/32/47196_2.png) [@Arman\_Ajdani](https://discuss.elastic.co/u/Arman_Ajdani)\
**Post date:** [February 1, 2020, 8:31am UTC](https://discuss.elastic.co/t/is-it-okay-to-have-multiple-es-nodes-on-one-machine/217486/1 "2020-02-01T08:31:14Z")

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Is it okay to have multiple ES nodes on one machine? what are the cons to this action?

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**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\
**Post date:** [February 1, 2020, 9:44am UTC](https://discuss.elastic.co/t/is-it-okay-to-have-multiple-es-nodes-on-one-machine/217486/2 "2020-02-01T09:44:46Z")

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Yes, sometimes that makes sense. They obviously contend for the same limited resources (disk, CPU etc) and there's a bit of per-node overhead too.

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**Author:** ![Arman\_Ajdani](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/arman_ajdani/32/47196_2.png) [@Arman\_Ajdani](https://discuss.elastic.co/u/Arman_Ajdani)\
**Post date:** [February 1, 2020, 9:46am UTC](https://discuss.elastic.co/t/is-it-okay-to-have-multiple-es-nodes-on-one-machine/217486/3 "2020-02-01T09:46:54Z")

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So I should manage Memory to overall nodes usage become equal to half of all memory?

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**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\
**Post date:** [February 1, 2020, 9:53am UTC](https://discuss.elastic.co/t/is-it-okay-to-have-multiple-es-nodes-on-one-machine/217486/4 "2020-02-01T09:53:12Z")

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Yes, decide how much of your total memory you want to allocate to each node, then set the heap size on each node to no more than half of its allocation.

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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:** [February 29, 2020, 9:53am UTC](https://discuss.elastic.co/t/is-it-okay-to-have-multiple-es-nodes-on-one-machine/217486/5 "2020-02-29T09:53:12Z")

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