Re: [Condor-users] condor_rooster - how does it work

[Dan Bradley <dan@xxxxxxxxxxxx>]

Ian,

Yes, good point.  You can generate offline ads using condor_advertise.  
Then you could use rooster to manage the wakeup calls and still use some 
other mechanism for hibernation.

In the ads you give to condor_advertise, just set Offline=True.  Use 
UPDATE_STARTD_AD or INVALIDATE_STARTD_AD in the command argument to 
condor_advertise.

Let me know if you run into any difficulty.  Once you are happy with how 
it works, this seems like a worthy candidate for the Condor admin how-to 
recipies (hint hint!).

--Dan

Smith, Ian wrote:
> Dan,
>
> Only just had a chance to look at this again. That makes sense but I am
> bit wary of using the Condor power saving at present as we already have
> a thrid party scheme which has been working pretty well. What I has thinking
> is - could we populate OFFLINE LOG using say a cron job periodically. We
> can obtain ClassAds for all machines in the pool and basically just delete
> those for machines which are powered up to leave the hibernating ones -
> would this be likely to work.
>
> thanks,
>
> -ian.
>
>   
> > -----Original Message-----
> > From: condor-users-bounces@xxxxxxxxxxx [mailto:condor-users-
> > bounces@xxxxxxxxxxx] On Behalf Of Dan Bradley
> > Sent: 30 November 2009 16:59
> > To: Condor-Users Mail List
> > Subject: Re: [Condor-users] condor_rooster - how does it work
> >
> > Ian,
> >
> > condor_rooster depends on there being offline ads for the hibernating
> > machines.  The offline ads are created when HIBERNATE becomes true,
> > assuming your collector has been configured to support offline ads
> > (configure OFFLINE_LOG).
> >
> > Does that help?
> >
> > --Dan
> >
> > Smith, Ian wrote:
> >     
> > > Hello All,
> > >
> > > As someone who has spent a lot of effort in tying to get our Condor pool to
> > > work with power saving Windows execute hosts I was very interested in
> > > using condor_rooster to wake up machines automatically according to
> > > demand but I cannot for the life of me understand how it works.
> > >
> > > Currently the power saving is performed by 3rd party s/w and we do
> > > not use the hibernating features built into Condor. As far as I can
> > > tell when the power saving kicks in, the Condor daemons get killed
> > > and the machine disappears from the pool. I can't work out how
> > > condor_rooster can work out if these machines are available for
> > > wakeup when they are no longer publishing ClassAds.  I don't
> > > see any persistent ClassAds for them - do I need to use the
> > > HIBERNATE in the execute host config ?
> > >
> > > Is there any more documenation available on this - the v. 7.4 manual is a bit
> > > short on info on this.
> > >
> > > thanks - in - advance,
> > >
> > > -ian.
> > >
> > > --------------------------------------------
> > > Dr Ian C. Smith,
> > > e-Science Team,
> > > The University of Liverpool,
> > > Computing Services Department
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