Chapter 1. Upgrading Ambari and HDP
Ambari and the HDP Stack being managed by Ambari can be upgraded independently.
This guide provides information on:
![[Important]](../common/images/admon/important.png) | Important |
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As of January 31, 2021, all downloads of HDP and Ambari require a username and password and use a modified URL. You must use the modified URL, including the username and password when downloading the repository content. |
![[Note]](../common/images/admon/note.png) | Note |
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If you are on Ambari 2.5.x.x version, it is recommended to upgrade to Ambari 2.6.1.21 HotFix version. |
| Important |
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Ambari 2.5 does not support managing an HDP 2.2, 2.1 or 2.0 cluster. If you are running HDP 2.2, 2.1 or 2.0, in order to use Ambari 2.5 you must first upgrade to HDP 2.3 or higher using either Ambari 2.4.2, 2.2.2, 2.2.1, 2.2, 2.1, or 2.0 before upgrading to Ambari 2.5. Once completed, upgrade your current Ambari to Ambari 2.5. |