# Rolling upgrade - can't revert... :-(

**URL:** <https://discuss.elastic.co/t/rolling-upgrade-cant-revert/249306>\
**Category:** Elasticsearch\
**Created:** [September 21, 2020, 6:05am UTC](https://discuss.elastic.co/t/rolling-upgrade-cant-revert/249306 "2020-09-21T06:05:50Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![HarelM](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/harelm/32/11740_2.png) [@HarelM](https://discuss.elastic.co/u/HarelM)\
**Post date:** [September 21, 2020, 6:05am UTC](https://discuss.elastic.co/t/rolling-upgrade-cant-revert/249306/1 "2020-09-21T06:05:50Z")

</div>

OK, so I started an attempt to upgrade my elasticsearch node.  
I had one node with 5.6.3 version and a few indices.  
I added another node with version 6.8.12.  
I Reindexed all my indices and added a prefix 6-8 so that new indices names are some-index-6.8  
thought this process the nodes have crashed but in the end the reindex succeeded.  
I have decided not to go thought with the upgrade and deleted the new indices.  
But now I want to remove the extra node I added but some of the data is stored there and I can't seem to be able to move the shards to the original node.  
Can someone please help me with this? This is just a nightmare...  
I want to go back to the original setup - one node with 5.6.3 version.

---

<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [September 21, 2020, 6:12am UTC](https://discuss.elastic.co/t/rolling-upgrade-cant-revert/249306/2 "2020-09-21T06:12:10Z")

</div>

From [the docs](https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-upgrade.html);

> In-place downgrades to earlier versions are **not** supported. To downgrade to an earlier version, [restore a snapshot](https://www.elastic.co/guide/en/elasticsearch/reference/current/snapshots-restore-snapshot.html) taken prior to the version upgrade.

Unless you have taken a backup, any data on the new node would be considered lost.

---

<div class="post-metadata">

**Author:** ![HarelM](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/harelm/32/11740_2.png) [@HarelM](https://discuss.elastic.co/u/HarelM)\
**Post date:** [September 21, 2020, 6:28am UTC](https://discuss.elastic.co/t/rolling-upgrade-cant-revert/249306/3 "2020-09-21T06:28:39Z")

</div>

I didn't. ☹

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [October 19, 2020, 6:29am UTC](https://discuss.elastic.co/t/rolling-upgrade-cant-revert/249306/4 "2020-10-19T06:29:08Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.