Hey Lian Jiang,                        Yes it is possible to create Ranger 
Database and provide the credentials for Ranger database directly in the 
blueprint.In this case you will need to provide the create_db_user (Setup 
Database and Database User) flag with value No. Provide the db_user and 
db_password values as per normal installation, but you will not need to provide 
db_root_user and db_root_password values.

ThanksVishal Suvagia.
    On Tuesday, 1 May, 2018, 11:52:35 PM IST, Lian Jiang 
<[email protected]> wrote:  
 
 I am installing ranger using ambari blueprint using oracle database.

Per 
https://cwiki.apache.org/confluence/display/AMBARI/Blueprint+support+for+Ranger,
 I need to provide root user password for ambari to create databases for KMS 
and ranger.

As you know, providing the root password is not a good practice due to security 
concerns. Can I manually create the databases and let ambari use these 
pre-existing databases so that I don't need to provide the root password? I 
don't see any document for this.

Thanks for any hints.
  

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