Chapter 5. Upgrade Ambari
This document describes the procedure for upgrading Ambari, before upgrading the Ambari-managed IOP cluster to an Ambari-managed HDP cluster.
![[Important]](../common/images/admon/important.png) | Important |
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Migrating to HDP-2.6.4 requires Ambari-2.6.1.5 To migrate an IOP-4.2.0 cluster, you must upgrade Ambari to version 2.5.2 and then to Ambari-2.6.1.5 before migrating to HDP-2.6.4. To migrate an IOP-4.2.5 cluster to HDP-2.6.4, upgrade Ambari to version 2.6.1.5 then migrate to HDP-2.6.4. |