Hi Maarten
I tried all these as you instructed but the problem has remained the same.
Further, I found another problem with these two worker nodes that when
I try to SCP on these two nodes from CREMCE then following error come:
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle
attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
d1:96:62:43:90:4b:2f:25:a4:97:07:02:2a:94:fa:82.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this
message.
Offending key in /root/.ssh/known_hosts:1
RSA host key for 210.56.24.246 has changed and you have requested
strict checking.
Host key verification failed.
lost connection
is it possible reason behind worker-nodes problem and how we can resolve it?
Thanks & Regards
Muhammad Waqar
PK-CIIT
Quoting Maarten Litmaath <[log in to unmask]>:
> Hi Muhammad,
>
>> Our two Worker Nodes ( 210.56.24.246 & 210.56.24.247) are
deactivate
>> from few days and unable to run any job. Configuration and
remaining
>> things are same as on other worker nodes.
>> what would be the possible reason and how to resolve this problem?
> Maui bug? Restarting Maui may help.
>
> Torque bug? Try removing the jobs that are supposed to be running
on
> those 2 WN (with "qdel") and restart the Torque daemons on those
nodes;
> if that does not help, restart the Torque server as well...
>
>
Best Regards,
Muhammad Waqar
Research Associate
Department of Physics,
COMSATS Institute of Information Technology,
Park Road, Chak-Shehzad, Islamabad, Pakistan.
Cell: +92-333-5000799
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