Create a Kerberos Principal and a keytab File for Flume

Skip this task if you are not using Flume.

On each node where Flume is installed, use the following commands in a Linux-based Kerberos environment to set up the identity and update the keytab file:
# kadmin
    : addprinc -randkey username/<FQDN@REALM>
    : ktadd -k /opt/mapr/conf/flume.keytab username/<FQDN@REALM>

The flume.keytab file must be owned and readable only by the mapr user.