# Upgrading from ES 2.1.2 to 2.3.5

**URL:** <https://discuss.elastic.co/t/upgrading-from-es-2-1-2-to-2-3-5/82023>\
**Category:** Elasticsearch\
**Created:** [April 11, 2017, 5:16pm UTC](https://discuss.elastic.co/t/upgrading-from-es-2-1-2-to-2-3-5/82023 "2017-04-11T17:16:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![stecino](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@stecino](https://discuss.elastic.co/u/stecino)\
**Post date:** [April 11, 2017, 5:16pm UTC](https://discuss.elastic.co/t/upgrading-from-es-2-1-2-to-2-3-5/82023/1 "2017-04-11T17:16:27Z")

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Hello,

I am using this [https://www.elastic.co/guide/en/elasticsearch/reference/2.3/rolling-upgrades.html](https://www.elastic.co/guide/en/elasticsearch/reference/2.3/rolling-upgrades.html) as a reference for rolling upgrade for data nodes, but what about client and master nodes? Can I upgrade those before or after. Any particular order I should follow?

Thanks in advance

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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:** [May 9, 2017, 5:20pm UTC](https://discuss.elastic.co/t/upgrading-from-es-2-1-2-to-2-3-5/82023/2 "2017-05-09T17:20:56Z")

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