Robert Heller wrote: > I manage a bunch of workstations at the Wendell Free Library. They are all > diskless, boot via PXE and mount all of their file systems via NFS from a > server. All of the machines are 32-bit and run CentOS (fully up-to-date > running 5.10). There are two printers with queues managed on the server. The > server 'shares' these printers on the local LAN (eg with all of the > workstations). After the upgrade to 5.10, *one* of the machine no longer sees > the printers. *Nothing* is different about its configuration files, since > these files are mounted via NFS from the server, *like all of the other > workstations*. The other workstations all see the printers shared by the > server. I don't understand what is going on here. And cannot find the problem. > > lpstat -t on the server yields: > > scheduler is running > system default destination: BlackandWhiteLaserjet > device for BlackandWhiteLaserjet: socket://192.168.1.246:9100 > device for Officejet_Color: socket://192.168.1.253 > BlackandWhiteLaserjet accepting requests since Tue 19 Jun 2012 03:27:17 PM EDT > Officejet_Color accepting requests since Tue 24 Jul 2012 04:43:33 PM EDT > printer BlackandWhiteLaserjet is idle. enabled since Tue 19 Jun 2012 03:27:17 PM EDT > printer Officejet_Color is idle. enabled since Tue 24 Jul 2012 04:43:33 PM EDT > > lpstat -t on the bum workstation yields: > > lpstat: No destinations added. > lpstat: No destinations added. > lpstat: No destinations added. > lpstat: No destinations added. > scheduler is running > no system default destination > > and lpstat -t on a working workstation yields: > > scheduler is running > system default destination: BlackandWhiteLaserjet > device for BlackandWhiteLaserjet: ipp://192.168.1.254:631/printers/BlackandWhiteLaserjet > device for Officejet_Color: ipp://192.168.1.254:631/printers/Officejet_Color > BlackandWhiteLaserjet accepting requests since Sun 10 Nov 2013 10:26:03 AM EST > Officejet_Color accepting requests since Sun 10 Nov 2013 10:26:04 AM EST > printer BlackandWhiteLaserjet is idle. enabled since Sun 10 Nov 2013 10:26:03 AM EST > printer Officejet_Color is idle. enabled since Sun 10 Nov 2013 10:26:04 AM EST > > The server's /etc/cups/cupsd.conf looks like this: > > > {snip part of cupsd.conf} > <Location /admin> > Allow from localhost > Allow from 192.168.1.27 > Allow from 192.168.1.28 > Allow from 192.168.1.29 > Allow from 192.168.1.5 > # Allow remote administration... > Order allow,deny > Allow all > </Location> > > {snip another bit of cupsd.conf} > > and the cupsd.conf (shared by ALL of the workstations) looks like this: > > {snip workstation cupsd.conf} A shot in the dark here. "Somehow" the errant workstation is different. Is its IP address outside this list Allow from 192.168.1.27 Allow from 192.168.1.28 Allow from 192.168.1.29 Allow from 192.168.1.5 Ken Allow from 192.168.1.254 -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.