Before you install CDH, review Cloudera Enterprise 5.x Release Notes, especially CDH 5 and Cloudera Manager 5 Requirements and Supported Versions.

For planning, best practices, and recommendations, review the reference architecture for your environment. For example, for on-premises deployments, review the Cloudera Enterprise Reference Architecture for Bare Metal Deployments (PDF).

The following topics describe additional considerations you should be aware of before beginning an installation:

• Required Privileges
• Enabling NTP
• Configuring Network Names
• Setting SELinux mode
• Disabling the Firewall
• Impala Requirements