Re: [Condor-users] Newbie ClassAds question

["David A. Kotz" <dkotz@xxxxxxxxxxxxx>]

Darin Kalisak wrote:
> Hi,
>
> I'd like to know if I'm missing information about machine class ads.
>
> I know how to create a class ad for a job - make a text file, submit
> it, sit back and wait for results (or errors).  But as far as I can
> tell, the class ad for a machine is derived (entirely?) from the
> config file on that machine.  It also seems that the parameters
> defined in that file don't always match with the named attributes I
> see with condor_status -l, and that multiple lines of the file can
> contribute to one attribute in the ad.  Lastly, I don't see a built-in
> tool or command for changing class ads directly.  Is the only way to
> change machines' class ads to look up parameters' uses and values,
> changing them, and restarting the machine to affect changes in the
> next condor_status -l command?  If so, that's fine, I'll keep fiddling
> with them.  But if there's a better way, I'd sure like to know it.
>
> Thanks!
>
> Darin
>
>
> PS - my particular problem is that one of the machines in my prototype
> pool lists "requirements = FALSE", and I haven't been able to get it
> to run anything at all, despite changing several lines of the config
> file.
>
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Darin,

You might look at the condor_config_val command, which lets you query 
and change values on the fly.

http://www.cs.wisc.edu/condor/manual/v6.7/condor_config_val.html
  or
http://www.cs.wisc.edu/condor/manual/v6.6/condor_config_val.html

If your requirements evaluates to false in the machine classad, it seems 
likely that there's a syntax error in the requirements expression.  Why 
don't you post that expression from the condor_config for everyone to 
look at?

- dave