# Change Primary shards number
**URL:** https://discuss.elastic.co/t/change-primary-shards-number/250963
**Category:** Elasticsearch
**Created:** [October 5, 2020, 9:36am UTC](https://discuss.elastic.co/t/change-primary-shards-number/250963 "2020-10-05T09:36:17Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@vodka\_pivo](https://discuss.elastic.co/u/vodka_pivo)
#### Post date: [October 5, 2020, 9:36am UTC](https://discuss.elastic.co/t/change-primary-shards-number/250963/1 "2020-10-05T09:36:17Z")
Hello! i use elasticsearch 7.4.0 and i want to change the primary shards number on existing indices
how can i do this? i want to increase some primary shards, and decrease
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### Author:  [@spinscale](https://discuss.elastic.co/u/spinscale)
#### Post date: [October 5, 2020, 9:41am UTC](https://discuss.elastic.co/t/change-primary-shards-number/250963/2 "2020-10-05T09:41:17Z")
See [https://www.elastic.co/guide/en/elasticsearch/reference/7.9/indices-split-index.html](https://www.elastic.co/guide/en/elasticsearch/reference/7.9/indices-split-index.html) and [https://www.elastic.co/guide/en/elasticsearch/reference/7.9/indices-shrink-index.html](https://www.elastic.co/guide/en/elasticsearch/reference/7.9/indices-shrink-index.html)
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### Author:  [@vodka\_pivo](https://discuss.elastic.co/u/vodka_pivo)
#### Post date: [October 8, 2020, 2:00pm UTC](https://discuss.elastic.co/t/change-primary-shards-number/250963/3 "2020-10-08T14:00:25Z")
thank you my friend! it works brilliant!
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 5, 2020, 2:00pm UTC](https://discuss.elastic.co/t/change-primary-shards-number/250963/4 "2020-11-05T14:00:30Z")
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