Preparing to Upgrade Ambari
Be sure to review the Ambari 2.7.5.0 release notes 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
/etc/ambari-server/conf/ambari.properties.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 |
|---|---|---|
|
Ambari 2.6.x |
| X |
|
Ambari 2.5x | X |
|
|
Ambari 2.4x | X |
|
During Ambari upgrade, the existing
/var/lib/ambari-server/ambari-env.sh file 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.
Next Steps
More Information