upgrade HDP and ambari from 2.6.4 and ambari 2.6.1

@Michael Bronson

Following doc explains step by step instruction to perform this activity (including taking various backups)

https://docs.hortonworks.com/HDPDocuments/Ambari-2.6.2.2/bk_ambari-upgrade/content/ambari_upgrade_guide.html

Getting Ready: https://docs.hortonworks.com/HDPDocuments/Ambari-2.6.2.2/bk_ambari-upgrade/content/preparing_to_upgrade_ambari_and_hdp.html

Basically you will need to first upgrade Ambari and then perform the HDP upgrade.

Upgrading Ambari to 2.6.2.2: (also the ambari Post upgrade steps)

https://docs.hortonworks.com/HDPDocuments/Ambari-2.6.2.2/bk_ambari-upgrade/content/preparing_to_upgrade_ambari_and_hdp.html

Upgrading HDP to HDP 2.6.5:

https://docs.hortonworks.com/HDPDocuments/Ambari-2.6.2.2/bk_ambari-upgrade/content/upgrading_hdp_stack.html