# ES rolling upgrade from 6.3.2 to 6.8.22, ES plug-in version should be upgraded to 6.8.22? **URL:** \ **Category:** Elasticsearch\ **Created:** [June 28, 2022, 6:48am UTC](https://discuss.elastic.co/t/es-rolling-upgrade-from-6-3-2-to-6-8-22-es-plug-in-version-should-be-upgraded-to-6-8-22/308325 "2022-06-28T06:48:53Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![qiuxb](https://avatars.discourse-cdn.com/v4/letter/q/48db29/32.png) [@qiuxb](https://discuss.elastic.co/u/qiuxb)\ **Post date:** [July 4, 2022, 6:54am UTC](https://discuss.elastic.co/t/es-rolling-upgrade-from-6-3-2-to-6-8-22-es-plug-in-version-should-be-upgraded-to-6-8-22/308325/4 "2022-07-04T06:54:40Z")
> [@ES is upgraded from version 6.3.2 to 6.8.22 in a rolling manner. After the upgrade, the cluster status is abnormal. How to roll back to 6.3.2?](https://discuss.elastic.co/t/es-is-upgraded-from-version-6-3-2-to-6-8-22-in-a-rolling-manner-after-the-upgrade-the-cluster-status-is-abnormal-how-to-roll-back-to-6-3-2/304533/5): > > Thanks for the reply, I have a question about rolling upgrades, the part marked in the following text, is it understood that it is not allowed to accept multiple ES versions for a long time during the upgrade? However, the actual rolling upgrade requires a gradual upgrade of nodes one by one, and needs to wait for the node status to recover and the cluster status to recover to green, which may take a long time. During this period, two versions of ES must exist in the cluster at the same time. R… ![111](https://us1.discourse-cdn.com/elastic/original/3X/2/9/2909e63bc49a6d8091f66643448fb0a7b9d0ef77.png) I still have a question, what are the main factors that affect the coexistence of multiple versions of ES during ES rolling upgrades? Why is it safer to be under the hour? --- _[View the full topic](https://discuss.elastic.co/t/es-rolling-upgrade-from-6-3-2-to-6-8-22-es-plug-in-version-should-be-upgraded-to-6-8-22/308325)._