For Kerberos authentication, a keytab file is used to authenticate to the key distribution center (KDC). Add the keytab file location as a property in the hdfs-site.xml configuration file on all data access nodes.
HDFS
The hdfs-site.xml file is located in the hadoop_installation_directory/conf/ directory.
Example
<property>
<name>hadoop.user.keytab.file</name>
<value>/etc/krb5.keytab</value>
</property>where /etc/krb5.keytab is the keytab file location
HBase
For HBase, add the keytab file location as a property in the hbase-site.xml configuration file on all data access nodes. The hbase-site.xml file is located in hadoop_installation_directory/conf/.
Example
<property>
<name>hbase.client.keytab.file</name>
<value>/etc/krb5.keytab</value>
</property>where /etc/krb5.keytab is the keytab file location