This is the documentation for Cloudera Manager 4.8.5.
Documentation for other versions is available at Cloudera Documentation.

Upgrading CDH in a Cloudera Manager Deployment

  Important: Cloudera Manager version 3.x and CDH3 have reached End of Maintenance (EOM) as of June 20, 2013. Cloudera will not support or provide patches for any of the Cloudera Manager version 3.x and CDH3 releases. Even though Cloudera Manager 4.x will continue to support CDH3, it is strongly recommended that you upgrade to CDH4. See Upgrading existing installations of CDH3 to CDH4 for more details.

Cloudera Manager supports managing CDH4 and CDH3. To ensure the highest level of functionality and stability, consider upgrading to the most recent version of CDH4. The process of upgrading CDH to the most recent version is different when those CDH installations are managed by Cloudera Manager. You can also upgrade individual products such as Impala and Solr.

As of Cloudera Manager version 4.5, you can upgrade to CDH4 from within the Cloudera Manager Admin Console using Parcels. You can also upgrade individual products such as Impala using parcels. See Using Parcels for a general description of the upgrade process using parcels.

If you are running HDFS High Availability, you can perform a Rolling Upgrade that lets you avoid cluster downtime by using the NameNode Failover mechanism as part of the upgrade process. See Performing a Rolling Upgrade on a Cluster .

Note that doing a CDH upgrade, especially between CDH3 and CDH4 or from CDH4.0 or 4.1 to CDH4.2 or later may require some extra manual steps to supplement the parcel upgrade process.

See the following topics for details on upgrading to the latest CDH4 (using parcels or packages):