3. Collect Information

To deploy your HDP installation, you need to collect the following information:

The fully qualified domain name (FQDN) for each host in your system, and which component(s) you wish to set up on which host. You can use hostname -f to check for the FQDN if you do not know it.
The hostname (for an existing instance), database name, username, and password for the MySQL/Oracle instance, if you want to use external database for Hive or Oozie metastore.

	Note
	If you are using an existing instance, the database user you create for HDP’s use must be granted `ALL PRIVILEGES` on that instance.