# Migrating from ES 1.5 to ES 5

**URL:** <https://discuss.elastic.co/t/migrating-from-es-1-5-to-es-5/176665>\
**Category:** Elasticsearch\
**Created:** [April 12, 2019, 3:57pm UTC](https://discuss.elastic.co/t/migrating-from-es-1-5-to-es-5/176665 "2019-04-12T15:57:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![pullmana8](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pullmana8/32/41519_2.png) [@pullmana8](https://discuss.elastic.co/u/pullmana8)\
**Post date:** [April 12, 2019, 3:57pm UTC](https://discuss.elastic.co/t/migrating-from-es-1-5-to-es-5/176665/1 "2019-04-12T15:57:14Z")

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I am working with an infrastructure team for Gentoo, and I have a quick question about migrating ES 1.5 or 2.0 I believe, to ES 5 for now. It looks like there are major differences with ES5 and ES6. I use the Ruby client, and the project entails using Elasticsearch Persistence/Model at the same time, but reading the github project info, they seem to have separated the Persistence and Model, and added a new feature, Repository.

My question is pertaining to upgrading from ES 1.5, and I didn't see any documents for the 1 versions, but I do see ES2 versions. Do I need to do a rewrite on the coding to reflect ES5 - current? Or are there documents for ES 1.5 that I can refer to?

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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 10, 2019, 3:57pm UTC](https://discuss.elastic.co/t/migrating-from-es-1-5-to-es-5/176665/2 "2019-05-10T15:57:15Z")

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Closed on May 10, 2019, 3:57pm UTC

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