CUPS

CUPS (Common UNIX Printing System) is a modular printing system for Unix-like operating systems which allows a computer to act as a print server. A computer running CUPS is a host that can accept print jobs from client computers, process them, and send them to the appropriate printer

Install CUPS

This was tested on RHEL8.10

Install CUPS as root:

yum install -y cups
yum install -y samba-client
systemctl start cups
systemctl enable cups

Then configure the CUPS configuration file:

chmod 666 /etc/cups/cupsd.conf
vim /etc/cups/cupsd.conf

(The configuration of this file may vary depending on your organization or home setup)

Configure Require valid-user like so:

 # All administration operations require an administrator to authenticate...
 <Limit CUPS-Add-Modify-Printer CUPS-Delete-Printer CUPS-Add-Modify-Class CUPS-Delete-Class CUPS-Set-Default CUPS-Get-Devices>
   AuthType Default
   Require valid-user
   Order deny,allow
 </Limit>

Restart the server:

systemctl restart cups

Then open a browser and go to: http://localhost:631/admin.

Add a Printer

You can add a printer through the CUPS Web UI or via command line

Useful Commands

Check if Printer is enabled:

lpstat -p
lpstat -p <printer name>

Check CUPS logs:

dzdo journalctl -u cups -e
dzdo journalctl -u cups -f