[GE users] User Authentication on Execute Nodes ..

Andreas.Haas at Sun.COM Andreas.Haas at Sun.COM
Thu Aug 9 11:21:28 BST 2007


On Thu, 9 Aug 2007, Graham Jenkins wrote:

> Reuti wrote:
>> Am 06.08.2007 um 10:10 schrieb Graham Jenkins:
>> Are you getting this error only with SGE, or also with a conventional
>> login?
>
> Andreas.Haas at Sun.COM wrote:
>> SGE simply does a getpwnam(3). That one must work for any user. For
>> testing you could write a small C program wrapper around getpwnam(3).
>
> Thanks for your suggestions Reuti and Andreas. The bit we were missing
> (after switching to using .db password files) was .. on each execute
> node ..
>  service sgeexecd stop; service sgeexecd start
>
> Seems like the exec daemon only reads the authentication configurations
> at start time.

getpwnam(3) is called by the execds each time a job is to be executed anew. 
I'd be surprised if the library itself does any caching. Maybe some other 
component in your set-up caches password entries?

Regards,
Andreas

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