Don't require root to add printers

Question

When a user wants to add a new printer it's asking for a root password. I have an LTSP environment and the system is asking for a root password all the time; it's not asking even for a sudo'ed user's password. Is there any way to allow a certain user to add/edit/remove printers and not to have any other special access?

Answer 1

Have a look at the files in /etc/cups.

I don't have a Fedora 15 system to hand - but looking at a recent RHEL box, the relevant bits are in /etc/cups/cupd.conf

....
# Administrator user group...
SystemGroup sys root
....
# Restrict access to configuration files...
<Location /admin/conf>
  AuthType Basic
  Require user @SYSTEM
  Order allow,deny
  Allow localhost
</Location>
....
 # All administration operations require an adminstrator to authenticate...
<Limit Pause-Printer Resume-Printer Set-Printer-Attributes Enable-Printer 
     Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs 
     Release-Held-New-Jobs Deactivate-Printer Activate-Printer 
     Restart-Printer Shutdown-Printer Startup-Printer Promote-Job 
     Schedule-Job-After CUPS-Add-Printer CUPS-Delete-Printer 
     CUPS-Add-Class CUPS-Delete-Class CUPS-Accept-Jobs 
     CUPS-Reject-Jobs CUPS-Set-Default>
  AuthType Basic
  Require user @SYSTEM
  Order deny,allow
</Limit>

IIRC, @SYSTEM is macro for the groups listed in SystemGroup.

Answer 2

Add the user to the lp group. If that doesn't work, check ls -l /dev/_your_printer_ and see which group owns it