Using an account with 'sudo' privileges, edit the sssdaccess.conf file located at the path above.
To give a user access to log in, add their NetID to the 'simple_allow_users' line. If this line does not exist, you can create it. The list of users must be comma-separated.
Restart the sssd service: sudo systemctl restart sssd.service OR reboot the system.
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Provide 'sudo' (admin) priveleges to user
Note
Use with caution. This will enable the user to make system-wide changes and should be reserved for users who have familiarity with a Linux command-line environment.
"sudo
Info
If the user is logged in, the user will need to log out and log back in again for the system to assign the privileges to their account.
"sudo usermod -aG sudo <netid>"
Using an account with 'sudo' privileges, run the above command, substituting in the user's netid