Silent installation

You can optionally run the installer in silent mode. This means that instead of prompting you for information it requires at runtime, it obtains that information from environment variables you set beforehand.

Normally, the script prompts you to enter the following:

The username and password for your Hadoop manager UI (Cloudera Manager or Ambari). The script uses this information to query Cloudera Manager/Ambari for information related to your Hadoop cluster.
The username and password for the WebLogic Server admin. The script will create this user when it deploys WebLogic.
The username and password for the database, which it requires to connect Studio to the database.
The username and password for the Studio admin.
The absolute path to the location of the installation packages.

You can avoid these steps by setting the following environment variables before running the script.

Environment variable	Value
`BDD_HADOOP_UI_USERNAME`	The username for your Hadoop manager. For CDH clusters, this will be Cloudera Manager. For HDP clusters, it will be Ambari.
`BDD_HADOOP_UI_PASSWORD`	The password for your Hadoop manager.
`BDD_WLS_USERNAME`	The username for the WebLogic Server administrator.
`BDD_WLS_PASSWORD`	The password for the WebLogic Server administrator. This must contain at least 8 characters, one of which must be a number, and cannot start with a number.
`BDD_STUDIO_JDBC_USERNAME`	The username for your Studio database.
`BDD_STUDIO_JDBC_PASSWORD`	The password for your Studio database.
`BDD_STUDIO_ADMIN_USERNAME`	The email address of the Studio admin, which will be their username. This must be a full email address and can't begin with `root@` or `postmaster@`. Note: The installer will automatically populate this value to the `STUDIO_ADMIN_EMAIL_ADDERESS` property in bdd.conf, overwriting any existing value. If you set `STUDIO_ADMIN_EMAIL_ADDERESS` instead of this environment variable, the installer will still execute silently.
`BDD_STUDIO_ADMIN_PASSWORD`	The password for the Studio admin. This must contain at least 6 characters, one of which must be a non-alphanumeric character. Note that the Studio admin will be asked to reset their password the first time they log in if you set the `STUDIO_ADMIN_PASSWORD_RESET_REQUIRED` property to `TRUE`.
`INSTALLER_PATH`	The absolute path to the location of the installation packages. This is only required if you don't set the `INSTALLER_PATH` property in bdd.conf.