Hello, all. We finally have our central CUPS server running after learning more than we ever wanted to know about NSS, LDAP, groups, and CUPS authentication! The CUPS server is running on Lenny and we have installed cups-x2go. We have NOT installed x2goprint as it our understanding from reading the documentation that it is not necessary on the CUPS server but only on the X2Go Server. Is this correct?
We edited the client's .kdeprintrc file to point to the central cups server. The client does have x2goprint installed and both the user and x2goprint are members of the fuse group. The client uses a non-standard SSH port for security reasons. We restrict access to the desktop printers to the desktop users. Only I can print to my desktop printer and only Susie can print to Susie's desktop printer.
When we print on the client to the X2Go-CUPS printer, the print job shows as successful but the print dialog never appears on the physical desktop. The CUPS logs show a successful print job but no popup.
We have set up dsa key access. If we do a ssh -i /root/.x2go/ssh/.x2goprint/id_dsa x2goprint@<virtual desktop>, it works - we open an ssh console without being prompted. We have accepted the keys into the known_hosts file for both the short and fully qualified name. The strange thing is that a packet trace shows no SSH traffic. There is plenty of CUPS traffic but the CUPS server never tries to communicate with the virtual desktop via SSH.
If we use a local CUPS server instead, the X2Go print popup works just fine - very impressive. We have tried the setup with the local CUPS server both enabled and disabled. No difference.
What have we missed? Why does the central CUPS server not even try to send the job to the virtual desktop? How can we troubleshoot it further? We see nothing suspicious in the logs including the auth logs. Thanks - John
On Sat, 2010-02-13 at 23:30 -0500, John A. Sullivan III wrote:
Hello, all. We finally have our central CUPS server running after learning more than we ever wanted to know about NSS, LDAP, groups, and CUPS authentication! The CUPS server is running on Lenny and we have installed cups-x2go. We have NOT installed x2goprint as it our understanding from reading the documentation that it is not necessary on the CUPS server but only on the X2Go Server. Is this correct?
We edited the client's .kdeprintrc file to point to the central cups server. The client does have x2goprint installed and both the user and x2goprint are members of the fuse group. The client uses a non-standard SSH port for security reasons. We restrict access to the desktop printers to the desktop users. Only I can print to my desktop printer and only Susie can print to Susie's desktop printer.
When we print on the client to the X2Go-CUPS printer, the print job shows as successful but the print dialog never appears on the physical desktop. The CUPS logs show a successful print job but no popup.
We have set up dsa key access. If we do a ssh -i /root/.x2go/ssh/.x2goprint/id_dsa x2goprint@<virtual desktop>, it works - we open an ssh console without being prompted. We have accepted the keys into the known_hosts file for both the short and fully qualified name. The strange thing is that a packet trace shows no SSH traffic. There is plenty of CUPS traffic but the CUPS server never tries to communicate with the virtual desktop via SSH.
If we use a local CUPS server instead, the X2Go print popup works just fine - very impressive. We have tried the setup with the local CUPS server both enabled and disabled. No difference.
What have we missed? Why does the central CUPS server not even try to send the job to the virtual desktop? How can we troubleshoot it further? We see nothing suspicious in the logs including the auth logs. Thanks - John
Hello, again. I'm about to dive into this problem. Any pointers would be greatly appreciated. Does anyone have the print server running on a central CUPS server? Thanks - John
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John A. Sullivan III