Preparing to Upgrade Ambari
Be sure to review the Ambari Release Notes for the Ambari version to which you are upgrading, for Known Issues and Behavioral Changes.
You must have root, administrative, or root-equivalent authorization on the Ambari Server host and all Ambari Agent hosts in the cluster.
You must backup the Ambari Server database.
You must make a safe copy of the Ambari Server configuration file found at
If your cluster is SSO-enabled, do not stop Knox before upgrading Ambari.
The following table lists recommended (), and unsupported (X) upgrade paths.
|From / To||Ambari 2.7.x||Ambari 2.6.x|
During Ambari upgrade, the existing
is overwritten and a backup copy of
ambari-env.sh (with extension
.rpmsave) is created. If you have manually modified
ambari-env.sh (for example, to change Ambari Server heap), you will need to
re-apply your changes to the new file.