I would disallow logins to the head node, and only allow users to log in to the login nodes. You probably don't have any login nodes, but you can easily create some. These are simply nodes that have an interface... (More)
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Please see the Easy 8 Getting Started Guide (https://www.brightcomputing.com/easy8-getting-started-guide118). I believe this is covered in that guide. Also, please see the Bright installation manual. You can download the Bright manuals from support.brightcomputing.com/manuals41.