Before you upgrade

Before you start the HDF to CFM in-place upgrade process, ensure you understand the upgrade path available to you and your cluster meets the required prerequisites.

Upgrade path

The upgrade path is to use AM2CM tool and to upgrade from HDF 3.5.2.0 to CDP with CFM 2.1.1. If you have an earlier version of HDF, then first upgrade to HDF 3.5.2.0 and then upgrade to CDP with CFM 2.1.1.

SSH to host where Ambari is installed.
The Ambari machine contains the Cloudera Manager server.

Assign values to the following variables:

export clustername=HDFTOCDF
export pfork=6
export ambariuser=admin
export ambaripwd=admin
export ambariport=8080
export backupdir=/data/backups
export ambariprotocol=http
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64
export ambariserver=`hostname -f`
export metricscollectorhost=ccycloud-3.am2cmhdf.root.hwx.site
export grafanahost=ccycloud-3.am2cmhdf.root.hwx.site
export infrahost=ccycloud-1.am2cmhdf.root.hwx.site
export kdchost=`hostname -f`
export kdcrealm=EXAMPLE.COM
export kdcpasswd=Cloudera123
[ "${ambariprotocol}" = "https" ] && export securecurl="-k" || export securecurl=""

You need to assign values to these variables because the scripts used in this migration uses these predefined variables.