# Upgrade from 1.5.2 to 1.6.0 deleted all indices

**URL:** <https://discuss.elastic.co/t/upgrade-from-1-5-2-to-1-6-0-deleted-all-indices/25558>\
**Category:** Elasticsearch\
**Created:** [July 14, 2015, 10:11pm UTC](https://discuss.elastic.co/t/upgrade-from-1-5-2-to-1-6-0-deleted-all-indices/25558 "2015-07-14T22:11:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![podollb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/podollb/32/3703_2.png) [@podollb](https://discuss.elastic.co/u/podollb)\
**Post date:** [July 14, 2015, 10:11pm UTC](https://discuss.elastic.co/t/upgrade-from-1-5-2-to-1-6-0-deleted-all-indices/25558/1 "2015-07-14T22:11:37Z")

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Has anyone had an upgrade to their ES cluster inadvertently delete all indices? We have several clusters, and a rolling update worked on all of them, except 1 cluster. The nodes were all 1.5.2, and on that cluster we did one thing differently; instead of terminating a node (one at a time) and bringing up the new node (running the newer version, 1.6.0) we had brought on an additional node. So in the 3 node cluster, we had 3 nodes running 1.5.2, and terminated 1 of them, and brought up 2 nodes at the new version 1.6.0. That [shockingly] caused all indices to be deleted. Any ideas?

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**Author:** ![msimos](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@msimos](https://discuss.elastic.co/u/msimos)\
**Post date:** [July 14, 2015, 10:19pm UTC](https://discuss.elastic.co/t/upgrade-from-1-5-2-to-1-6-0-deleted-all-indices/25558/2 "2015-07-14T22:19:16Z")

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Do the indexes exist in /your\_es\_data\_dir/nodes/#/indices/index\_name? Elasticsearch won't delete any indexes unless you tell it to but possibly something is wrong with your indexes so they aren't visible. I'd check the Elasticsearch logs for any errors.

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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, 12:01am UTC](https://discuss.elastic.co/t/upgrade-from-1-5-2-to-1-6-0-deleted-all-indices/25558/3 "2017-07-06T00:01:28Z")

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