Upgrade Prerequisites

Note

Do not proceed for an upgrade without Ambari Upgrade.

Consider the versions shown in the screenshot as a reference. During the upgrade, you can see the target version you’re upgrading to.

After upgrading to the latest version of Ambari, proceed with both express and rolling upgrades. Perform the following:

1. (Mandatory for Rolling Upgrade) Ensure that HA (High Availability) is enabled for HDFS. Optionally, you can also enable HA for YARN.
2. (Mandatory) To preserve the configurations of any service, including management packs (mpacks), you can use the following process, which provides two ways to store the configuration settings.