Review the prerequisites

Before you start upgrading your clusters, ensure that you meet the prerequisites for each upgrade that is required.

Refer to the following documentation for detailed prerequisites:

• Review Data Lake Upgrade: Before you begin and Cloudera Data Hub Upgrade: Limitations and Prerequisites.
• If you are upgrading a Data Lake, use the Backup and Restore functionality. This will allow you to restore the SDX metadata if required.
• Certain Data Hubs might require certain pre-upgrade and post-upgrade steps. Review the related documentation before upgrading Data Hubs.
• If you are upgrading from CentOS to RHEL, review the Prerequisites for upgrading from CentOS to RHEL.
• If your upgrade path involves a Data Lake resize, refer to Review Data Lake resizing: Prerequisites.