After installing Oracle Clusterware, as described in Oracle Grid Infrastructure Installation Guide for your platform, you can install Oracle RAC Database software.

• Deciding Between Multitenant Container Databases and Non-CDBs in Oracle RAC
  Review the information to decide how to deploy your Oracle Database using the CDB or Non-CDB options.
• Selecting Installation Options for Oracle RAC
  Review the topics to select options for installing Oracle RAC.
• Running Oracle Universal Installer to Install Oracle Database
  Review the topics about running Oracle Universal Installer (OUI) to install Oracle Real Application Clusters (Oracle RAC) and Oracle RAC One Node Databases.
• Installing the Oracle Database Vault Option
  Installing and configuring Oracle Database Vault requires actions during and after installation.
• About Deploying Oracle Databases Using Rapid Home Provisioning
  Rapid Home Provisioning provides a standardized approach for provisioning, patching and upgrading software homes on any number of nodes from a single cluster.