[torqueusers] Torque, LDAP & long usernames

Clúster de Modelización Científica clustermc at uniovi.es
Mon Jun 10 06:23:39 MDT 2013


Hi,

We have an old running Torque (2.3.6) & maui cluster with one dedicated server 
and several computing nodes (all Scientific Linux 5). The server also runs the 
NIS server without problem.

We have recently changed from NIS to a LDAP server(running in the same server) 
and everything looked fine, but we're starting to find problems. Sometimes, 
jobs get errors like:

06/07/2013 18:59:59;0001;   pbs_mom;Svr;pbs_mom;start_exec, no password entry 
for user garciavdaniel
06/07/2013 18:59:59;0001;   pbs_mom;Svr;pbs_mom;Success (0) in fork_to_user, 
cannot find user 'garcxxydaniel' in password file
06/07/2013 18:59:59;0080;   pbs_mom;Req;req_reject;Reject reply code=15023(Bad 
UID for job execution REJHOST=yed04.sct.uo MSG=cannot find user 
'garciavdaniel' in password file), aux=0, type=CopyFiles, from 
PBS_Server at jaula04.sct.uo
06/07/2013 18:59:59;0001;   pbs_mom;Svr;pbs_mom;Inappropriate ioctl for device 
(25) in req_cpyfile, fork_to_user failed with rc=-15023 'cannot find user 
'garcxxyvdaniel' in password file' - returning failure

That's the only error we get. It looks like the pbs_mom starts teh job and at 
one point, it can't find the user. The job appears as completed and ends 
without anything done.

The user 'garcxxyvdaniel' is of course visible  inside the node: he can log in 
through ssh, su... id returns the right information.

I had the same problem with another user and I also noticed they have  long 
(10+) usernames. At the same time, the user 'agr' runs the same job without 
any problem. So I suspected it can be an issue with those names. I created a 
new user with a sorter name (same UID & GUID, just a new user name & password) 
and the account is working fine so far.

Has anybody experienced anything like that? Is it a known issue? Anything I am 
missing?

Thanks in advance,
Angel
-- 
Clúster de modelización científica - SCT - Universidad de Oviedo
C/Gonzalo Gutiérrez Quirós, s/n - Mieres 33600 - Asturias - Spain
Telf: +34-985458184 Email: clustermc at uniovi.es


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