# Upgrading a live elasticsearch cluster with zero downtime

**URL:** <https://discuss.elastic.co/t/upgrading-a-live-elasticsearch-cluster-with-zero-downtime/9351>\
**Category:** Elasticsearch\
**Created:** [October 14, 2012, 9:50am UTC](https://discuss.elastic.co/t/upgrading-a-live-elasticsearch-cluster-with-zero-downtime/9351 "2012-10-14T09:50:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Clinton\_Gormley](https://avatars.discourse-cdn.com/v4/letter/c/50afbb/32.png) [@Clinton\_Gormley](https://discuss.elastic.co/u/Clinton_Gormley)\
**Post date:** [October 14, 2012, 9:50am UTC](https://discuss.elastic.co/t/upgrading-a-live-elasticsearch-cluster-with-zero-downtime/9351/1 "2012-10-14T09:50:16Z")

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Yesterday I upgrade our cluster running 0.17.8 to 0.19.10 on a busy  
site, without any downtime.

I had a couple of requests to blog about how I did it, so here's the  
blogpost: [https://gist.github.com/3888120](https://gist.github.com/3888120)

clint

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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 6, 2017, 3:08am UTC](https://discuss.elastic.co/t/upgrading-a-live-elasticsearch-cluster-with-zero-downtime/9351/2 "2017-07-06T03:08:54Z")

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