This script attempts to create a
Kerberos realm. It assumes that none of the realm components
exists, except for the /etc/krb5.conf file. (Normally this file
is automatically generated at package installation, but if you
skipped the configuration step, you will need to manually generate
this file before running krb5_newrealm.)
It creates the database and populates
/etc/krb5kdc/kadm5.keytab which contains keys
necessary for kadmind to run.
