Hi, As I stated in an earlier reply I will attempt to follow Reuti and William's advice regarding ssh inside of SGE. Along those lines, please see my comments below to review what I believe are my next steps.
> Hi, > > Am 01.05.2020 um 20:44 schrieb Mun Johl: > > > Hi, > > > > I am using SGE on RHEL6. I am trying to launch a qsub job (a TCL script) > > via grid that will result in a GUI application being opened on > the caller's display (which is a VNC session). > > > > What I'm seeing is that if I set DISPLAY to the actual VNC display (e.g. > > host1:4) in the wrapper script that invokes qsub, the GUI > application complains that it cannot make a connection. On a side note, I > noticed that when I use ssh -X to login to one of our grid > servers, my DISPLAY is set to something like localhost:10 . Now, if I use > localhost:10 (for example) in my grid wrapper script, the GUI > application _will_ open on my VNC display. > > Yes, here X11 forwarding is provided by SSH. The forwarding of X11 is not > built into SGE. > > > > Of course, with multiple users and multiple grid servers, I have no idea > > what a particular qsub command's DISPLAY should be set to. > I must be missing something because I'm sure others have already solved this > issue. > > Inside the wrapper it should always by something like localhost:10 with a > varying number. This is set by the login via SSH. Hence I'm > not sure what you are looking for to be set. > > Maybe you want to define in SGE to always use SSH -X? > > https://arc.liv.ac.uk/SGE/htmlman/htmlman5/remote_startup.html [Mun] In order to use ssh -X for our jobs that require an X11 window to be pushed to a user's VNC display, I am planning on the following changes. But please let me know if I have missed something (or everything). 1. Update the global configuration with the following parameters: rsh_command /usr/bin/ssh -X rsh_daemon /usr/sbin/sshd -i 2. Use a PAM module to attach an additional group ID to sshd. The following line will be added to /etc/pam.d/sshd on all SGE hosts: auth required /opt/sge/lib/lx-amd64/pam_sge-qrsh-setup.so 3. Do I need to restart all of the SGE daemons at this point? 4. In order to run our GUI app, launch it thusly: $ qrsh -now no wrapper.tcl Note that currently we launch wrapper.tcl via qsub. I would appreciate any and all feedback. Best regards, -- Mun _______________________________________________ users mailing list users@gridengine.org https://gridengine.org/mailman/listinfo/users
