To access Big Data Discovery Cloud Service, log into the service node of the Big Data Cloud Service cluster as the opc user and change the user to bdd to perform any service-specific operations, such as restoring from a backup, or applying patches.
opc user account. For information on it, see About Oracle Big Data Cloud Service Users and Roles in Getting Started with Big Data Cloud Service.
In addition, Big Data Discovery Cloud Service (BDDCS) runs its operations on one of the nodes in the BDCS cluster as the bdd user. This user is created in Big Data Cloud Service when the instance of Big Data Discovery is provisioned for you. This means that if you need to run BDDCS operations directly on its node in the BDCS cluster, you need to change to the bdd user.
To log into the BDCS node with BDDCS on it, you should use the private key pair of the public key stored in the /home/opc/.ssh/authorized_keys file (on all nodes in the BDCS cluster).
This assumes that the BDCS administrator had already created multiple key pairs for SSH in the BDCS cluster, one of which is for BDDCS use. Coordinate with the BDCS administrator to obtain the public key of the pair you can use on the BDDCS node. For information on how multiple key pairs for SSH are added in BDCS, see Supporting Multiple Key Pairs for Secure Shell (SSH) Access.
As a result, you are logged into the BDCS node hosting BDDCS instance as the bdd user. This lets you restore BDDCS from a backup, apply an upgrade patch to the BDDCS instance, access management console in Hive, and run the Data Processing (DP) CLI in BDDCS.