Re: [Condor-users] condor_rooster

[Dan Bradley <dan@xxxxxxxxxxxx>]

Johnson,

Short answer: the execute nodes and central manager must be 7.3.2 or 
higher to work with condor_rooster when using the default UNHIBERNATE 
policy.

Longer answer: The problem with versions of Condor prior ot 7.3.2 is 
that when they enter the hibernation state, they set Start=False in the 
offline machine ClassAd.  This means no jobs will ever match the offline 
machine, so the default UNHIBERNATE expression would never become true, 
because it depends on MachineLastMatchTime.  Furthermore, prior to 
7.3.2, machines did not advertise an UNHIBERNATE expression, though you 
could work around this with STARTD_ATTRS or by changing 
ROOSTER_UNHIBERNATE to not depend on the machine's UNHIBERNATE expression.

So you _could_ use condor_rooster with execute nodes from prior to 7.3.2 
providing you do not use the default UNHIBERNATE policy and your 
unhibernation policy does not depend on MachineLastMatchTime.

--Dan

Johnson koil Raj wrote:
> Hi Dan,
>
> So condor-7.3.2 or later is must or good to have version to use 
> condor_rooster.
>
> I am using condor-7.2.3 in my pools I am able to achieve hibernation, 
> will I am able use condor_power & condor_rooster in this version. 
> please clarify.
>
> Johnson
>
> Dan Bradley wrote:
> > Tom,
> >
> > General advice for getting condor_rooster to work:
> >
> > 1. the execute nodes and central manager must be running Condor 7.3.2 
> > or later.
> >
> > 2. OFFLINE_LOG must be configured so that the ClassAds of offline 
> > machines are saved.  Verify that when a machine enters the 
> > hibernating state that you can see a ClassAd for that machine.  The 
> > following command should list all hibernating machines:
> >
> > condor_status -constraint 'Offline'
> >
> > 3. you must add ROOSTER to DAEMON_LIST on a machine from which 
> > condor_power can successfully wake up hibernating machines.  (Changes 
> > to DAEMON_LIST require a restart of condor.)  I recommend testing 
> > with condor_power by hand to make sure it can wake up hibernating 
> > machines.
> >
> > --Dan
> >
> > Tom T wrote:
> > > All,
> > > Has anyone who has spent time to get the Condor pool to
> > > work with power saving Windows hosts I am 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
> > > Is there any more documentation available on this - Version 7.5 
> > > manual is a bit
> > > short on info.
> > > I am curious to see how other people are handling this .
> > >  
> > > Thanks in Advance
> > > Tom
> > >  
> > >  
> > >
> > > ------------------------------------------------------------------------ 
> > >
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