When selecting the “Connected to Directory System” option in setting up OD and following the instructions, there might be a chance that the “Join Kerberos” button disappears when you need it most. The way to get that back would be to delete the /etc/krb5.keytab file and restart Server Admin.

Do Note: That when using “Connected to Directory System” option, you will only be able to access the services that the xserve provides. There would be no ability to provide MCX and Augmented Records of any kind.