[GE users] Interest of cells and sge logins

Guillaume Evrard gevrard at laas.fr
Wed Mar 30 16:19:43 BST 2005


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ok and thanks, I'll find another way to do what I want !


----- Original Message -----
From: "Reuti" <reuti at staff.uni-marburg.de>
To: <users at gridengine.sunsource.net>
Sent: Wednesday, March 30, 2005 4:45 PM
Subject: Re: [GE users] Interest of cells and sge logins


> Guillaume,
>
> no, I think you got me wrong.
>
> The execd is running as root (ruid), and spawns a shepherd for the job
> (still as root). The shepherd in turn will create the job to be run with
> the id of the user.
>
> So, due to different admins you may have the account "john" on some
> machines, but on other machines it's "johnd" or "doejohn".
>
> So, as only the admin may create this mapping, it's not the user who can
> give him-/herself more rights.
>
> But this way, you can login to a submit host where you are "john", and
> the submitted job will run on another machine under the account
> "doejohn" and on another under "johnd". But all the accounting inside
> SGE will go back to the (cluster) user "john".
>
> This way I understand "man usermapping". - Reuti
>
>
> Guillaume Evrard wrote:
> > So it could enable to run exec deamons with simple user Z rights ??
(which
> > is NOT root)
> > submit and accounting  by/for user A,B,C; and it will execute on execd
as Z
> > on each machines...
> >
> > (because I'm not root here, and I've for the moment started execd with
my
> > rights, and only submit jobs from my account)
> >
> > ----- Original Message -----
> > From: "Reuti" <reuti at staff.uni-marburg.de>
> > To: <users at gridengine.sunsource.net>
> > Sent: Wednesday, March 30, 2005 11:10 AM
> > Subject: Re: [GE users] Interest of cells and sge logins
> >
> >
> >
> >>Hi,
> >>
> >>in SGE 6 I can only find a man-page about usermapping. But also if it's
> >
> > still
> >
> >>supported: in the way I understand it, it will do the opposite of your
> >
> > intended
> >
> >>behavior: submit and accounting will by/for user A, but on some machines
> >
> > it
> >
> >>will run under a different account like B on machine Z and C on machine
Y.
> >>
> >>CU - Reuti
> >>
> >>Quoting Guillaume Evrard <gevrard at laas.fr>:
> >>
> >>
> >>>ok, I've just seen I have to recompile with "-umap"
> >>>
> >>>----- Original Message -----
> >>>From: "Guillaume Evrard" <gevrard at laas.fr>
> >>>To: <users at gridengine.sunsource.net>
> >>>Sent: Wednesday, March 30, 2005 9:14 AM
> >>>Subject: Re: [GE users] Interest of cells and sge logins
> >>>
> >>>
> >>>
> >>>>First, thanks.
> >>>>
> >>>>I've found some docs about "usermapping" in the reference manual of
> >
> > sge
> >
> >>>5.3,
> >>>
> >>>>but my system doesn't know "qconf -aumap" or anything similar. Has
> >
> > this
> >
> >>>>fonctionnality been removed in sge 6 ? ( I'm running on 6 )
> >>>>Could this fonctionnality help me to use "fake users" to submit jobs,
> >>>>associated to real users on execution hosts ?
> >>>>
> >>>>
> >>>>Guillaume.
> >>>>
> >>>>
> >>>>----- Original Message -----
> >>>>From: "Ron Chen" <ron_chen_123 at yahoo.com>
> >>>>To: <users at gridengine.sunsource.net>
> >>>>Sent: Wednesday, March 30, 2005 2:29 AM
> >>>>Subject: Re: [GE users] Interest of cells and sge logins
> >>>>
> >>>>
> >>>>
> >>>>>--- Guillaume Evrard <gevrard at laas.fr> wrote:
> >>>>>
> >>>>>>Can I test
> >>>>>>managing policies without several unix logins ?
> >>>>>>Must I cheat to test that, for instance in adding a
> >>>>>>"-u <user>" option in qsub ?
> >>>>>
> >>>>>You will need to have several Unix logins. Even if you
> >>>>>can tell qsub the user name, as soon as the job gets
> >>>>>executed, it will result in an error since SGE cannot
> >>>>>execute it as the submit user.
> >>>>>
> >>>>> -Ron
> >>>>>
> >>>>>
> >>>>>
> >>>>>>
> >>>>>>Guillaume.
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>
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> >>>>>>
> >>>>>
> >>>>>
> >>>>>
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> >
> >
> >
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