Hello,
We have some problem to use native X11 of the new slurm version (17.11.5)
compiled from source on Debain stretch.
Before we use the plugin spank with no problem on an older version of slurm.
I have first this error
"error: X11 forwarding not built in, cannot enable."
After reading different mails,i add
in slurm.conf
PrologFLags=X11
and in /etc/ssh/sshd_config (on head login server of the cluster)
X11UseLocalhost=no
The error change and become
X11 connection rejected because of wrong authentication.
X11Forwarding is working because if i first open a interactive session, and
then connect whith ssh -X on the node, the x-application is working fine and
displayed on my client computer.
Then I look at .Xauthority file
( first i removed it and recreate a new)
#ssh -X me@cluster
#echo $DISPLAY
cluster:11.0
#xauth list
cluster.ips2.u-psud.fr:11 MIT-MAGIC-COOKIE-1 2809a05f53f693e416682f4befa76a39
#
$ srun --pty bash --init-file /etc/profile
me@node4:~$ echo $DISPLAY
cluster:11.0
#
#$ xauth list
node4.ips2.u-psud.fr:11 MIT-MAGIC-COOKIE-1 2809a05f53f693e416682f4befa76a39
###the hostname is now the hostname of the node
me@node4:~$ xeyes
X11 connection rejected because of wrong authentication.
Error: Can't open display: cluster:11.0
###But if i add :
#
me@node4:~$ xauth add cluster.ips2.u-psud.fr:11 MIT-MAGIC-COOKIE-1
2809a05f53f693e416682f4befa76a39
#I now can run x-application
Have you an idea of the problem ?
(User login/password authentification of the cluster are done again an Active
Directory annuaire with sssd )
Philippe GREVET
philippe.gre...@ips2.universite-paris-saclay.fr
Tel 0169153393 Bureau - 241 Bâtiment -630
http://www.ips2.u-psud.fr/
