[Wien] ssh command in Wien2k scripts

[Gavin Abo]

A good IT admin should know the ins and outs their own particular 
computer system such that they should be able to better advise you on a 
solution for environmental variable passing for their specific system.


You may want to have that IT admin work for their paycheck.  At least 
according to [1], an IT admin on average is compensated $110k per year.


I don't see a lot of information provided about the computer system such 
as its configuration and policy for usage.  If you can provide in-depth 
knowledge about your computer system that your IT admin would already 
now about or could gather from the system, we might be able to provide 
more specific advice.  For example, it can be quite typical for cluster 
computer systems to disallow running commands directly on the main node 
and running such commands there can sometimes even lead to getting 
banned from using the computer system.  Instead, the commands are 
committed to compute nodes with a schedule (queue) system which may be 
tasked with propagating the environmental variables to the computation 
nodes.  Some queue systems can require a special flag in the job script 
to get the environmental variables to the compute node(s). For 
additional details on such a case, see the post:


https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17562.html


So it may be possible for a command to fail when executed on the main 
node that may run fine when submitted to queue system (such as PBS, 
slurm, etc. [3]) with a script such as your command:


ssh vsli2 'echo $WIENROOT'


[1] https://www.theladders.com/salary/it-systems-administrator-salary

[2] 
https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17562.html

[3] https://slurm.schedmd.com/rosetta.pdf


On 9/12/2020 2:34 AM, Ilias Miroslav, doc. RNDr., PhD. wrote:
> Hello,
>
> I have similar problem as decribed here 
> https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg19049.html 
> <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg19049.html> .
>
> ssh vsli2 'echo $WIENROOT'
>
> The ssh connection does not preserve the WIENROOT envirovariable.
>
> IT admin does not want the variable ""PermitUserEnvironment"  in 
> .sshd_config to be set .
>
> Therefore, I have to change Wien2k scripts to incorporate enviromental 
> variable passing.
>
> Any hints, howtos ?
>
> Miro
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