Why Does Datameer Need the Kerberos Principals for a Hadoop Environment?

Question

Why does Datameer need the Kerberos principals for the Hadoop environment? Shouldn’t Datameer only need to be aware of its own Kerberos principal and keytab file?

Answer

No. Datameer needs Kerberos principals to access related services such as the Hadoop Distributed Files system (HDFS) or Resource Manager (RM). For more information, you can have a look into Kerberos Concepts - Principals, Keytabs and Delegation TokensKerberos Principals, and Creating Principals and Keytab Files

Further Information

Node Requirements for Keytabs