# How to increase max file descriptors in elasticsearch

**URL:** <https://discuss.elastic.co/t/how-to-increase-max-file-descriptors-in-elasticsearch/58520>\
**Category:** Elasticsearch\
**Created:** [August 21, 2016, 5:15am UTC](https://discuss.elastic.co/t/how-to-increase-max-file-descriptors-in-elasticsearch/58520 "2016-08-21T05:15:58Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sudarshan](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@sudarshan](https://discuss.elastic.co/u/sudarshan)\
**Post date:** [August 21, 2016, 5:15am UTC](https://discuss.elastic.co/t/how-to-increase-max-file-descriptors-in-elasticsearch/58520/1 "2016-08-21T05:15:58Z")

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max file descriptors [4096] for elasticsearch process likely too low, consider increasing to at least [65536]---I am getting this warning..

I have added MAX\_OPEN\_FILES=65536 in bin/elasticsearch file...but I am unable to overcome this warning...

I feel the process is very slow as I am indexing very large data into elasticsearch.

Thank You

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [August 21, 2016, 9:25pm UTC](https://discuss.elastic.co/t/how-to-increase-max-file-descriptors-in-elasticsearch/58520/2 "2016-08-21T21:25:16Z")

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What OS?

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**Author:** ![sudarshan](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@sudarshan](https://discuss.elastic.co/u/sudarshan)\
**Post date:** [August 22, 2016, 2:08am UTC](https://discuss.elastic.co/t/how-to-increase-max-file-descriptors-in-elasticsearch/58520/3 "2016-08-22T02:08:08Z")

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Cent OS

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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, 10:26pm UTC](https://discuss.elastic.co/t/how-to-increase-max-file-descriptors-in-elasticsearch/58520/4 "2017-07-05T22:26:19Z")

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