OS user requirements

The entire installation must be performed by a single OS user, called the bdd user. After installing, this user will run all BDD processes.

You must create this user or select an existing one to fill this role before installing. Although this document refers to it as the bdd user, its name is arbitrary.

The user you choose must meet the following requirements:

It can't be the root user.
Its UID must be the same on all nodes in the cluster, including Hadoop nodes.
It must have passwordless sudo enabled on all nodes in the cluster, including Hadoop nodes.
It must have passwordless SSH enabled on all nodes in the cluster, including Hadoop nodes, so that it can log into each node from the install machine. For instructions on enabling this, see Enabling passwordless SSH.
It must have bash set as its default shell on all nodes in the cluster, including Hadoop nodes.
It must have permission to create the directory BDD will be installed in on all nodes in the cluster, including Hadoop nodes. This directory is defined by the ORACLE_HOME property in the BDD configuration file.

If your databases are located on HDFS, the bdd user has additional requirements. These are described in Dgraph database requirements.