Authenticating with internal Cassandra password authentication 

DSE Unified Authentication works with internal Cassandra password authentication.

Internal Cassandra password authentication is based on Cassandra-controlled login accounts and passwords.

Internal authentication is supported on the following clients when you provide a role and password to start up the client:

  • Astyanax
  • cqlsh
  • Drivers
  • Hector
  • pycassa

You can provide authentication credentials in several ways, see Credentials for authentication.

Authentication stores user names (roles) and bcrypt-hashed passwords in the system_auth.credentials table.

Spark component limitations 

DataStax Enterprise provides internal authentication support for some Hadoop tools and for connecting Spark to Cassandra, not authenticating Spark components between each other.

Hadoop tool authentication limitations 

The following authentication limitations apply when using Hadoop tools:
  • Internal authentication is not supported for Mahout.
  • Using internal authentication to run the hadoop jar command is not supported.

    The hadoop jar command accepts only the JAR file name as an option, and rejects other options such as username and password. The main class in the JAR is responsible for making sure that the credentials are applied to the job configuration.

  • In Pig scripts that use the custom storage handlers CqlNativeStorage and CassandraStorage, provide credentials in the URL of the URL-encoded prepared statement:

    cql://username:password@keyspace/columnfamily
    cassandra://username:password@keyspace/columnfamily

    Use this method of providing authentication for Pig commands regardless of the mechanism that is used to pass credentials to Pig.

  • To use Hadoop tools, such as Hive, a role that does not have superuser privileges requires all privileges to HiveMetaStore and cfs keyspaces. To configure a role named role2, for example, to use Hadoop tools, use these cqlsh commands:
    cqlsh> GRANT ALL PERMISSIONS ON KEYSPACE "HiveMetaStore" TO role2;
    cqlsh> GRANT ALL PERMISSIONS ON KEYSPACE cfs TO role2;