Default services on the front end server

By default the front end server serves user files to the compute nodes and also has a NIS server running on the front end which was used during the installation process. Check the /etc/exports file on the front end and the /etc/fstab files on the compute nodes to see what files are mounted across the cluster. Typically this will be the directory trees :

/users
/usr/local
/opt/score/deploy

You may remove the first one (users files) should you wish to replace it. The /usr/local and /opt/score/deploy are used by the cluster so you should leave these as is.

A NIS server runs on the front end and typically has databases for password,shadow,group,hosts. You may continue to use this in order to administer user accounts for instance. If you want to replace this service with an external service you can do so. In this case see the section on firewall configuration.