As a root , and yeah i can switch monitor and keyboard to client node. what
should i do?!
On Tue, Nov 11, 2008 at 10:12 PM, Michael Edwards <[EMAIL PROTECTED]>wrote:
> Thanks for the clarification, I thought you had changed the ssh config
> somehow.
>
> When you are running ssh, are you doing it as a user or as root?
>
> It sounds like what you did to shut down was fine. When you power on
> the cluster, you need to start the head node completely and then start
> the compute nodes separately, or sometimes the nfs mounts don't work
> right. If the nodes don't mount nfs correctly, then nothing will work
> right (ssh wise).
>
> Can you bring up a node (keyboard, monitor) and try some things?
>
>
> On Tue, Nov 11, 2008 at 12:07 PM, Ali Nazemian <[EMAIL PROTECTED]>
> wrote:
> > Nothing, its just work without any changes in sshd configuration .
> > Let me explain it more, i installed OSCAR successfully and also i ran
> fluent
> > on it , after that i powered off head node and also client node manually
> ( i
> > think i powered off client node after head node , sorry when i said
> restart
> > i meant power off), Next day , when i start to check Fluent again , i
> meet
> > those problems.
> > Also about Fluent i just know that this software is support parallel by
> > itself , it means there is no need to make a cluster network it has
> > everything that needed for parallel running by itself, the only thing u
> need
> > is configuring SSH and set Key for that(according to its documentation) ,
> > for me SSH was configured by OSCAR before, so nothing need to be
> changed...
> > Cheers.
> >
> > On Tue, Nov 11, 2008 at 6:00 PM, Michael Edwards <[EMAIL PROTECTED]>
> wrote:
> >>
> >> Nothing needs to be reinstalled, just restart all the compute nodes.
> >> If cshutdown doesn't work, just try shutting off the power by hand.
> >>
> >> What did you have to change in sshd.conf for fluent to work?
> >>
> >> On Tue, Nov 11, 2008 at 9:00 AM, Ali Nazemian <[EMAIL PROTECTED]>
> >> wrote:
> >> > So now i should restarting OSCAR and Fluent for solving this problem?!
> >> > or
> >> > try to use rsh for Fluent?! ( security risk?!)
> >> > If i can solve this problem without re-installing let me know .
> >> > regards.
> >> >
> >> > On Tue, Nov 11, 2008 at 4:38 PM, Michael Edwards <[EMAIL PROTECTED]>
> >> > wrote:
> >> >>
> >> >> If you reboot the head node, you should reboot the cluster nodes also
> >> >> using "cshutdown -r". If you don't, then the nfs mounts on the
> >> >> compute nodes stop working and you see problems like you are having
> >> >> with ssh asking for passwords.
> >> >>
> >> >> For passwordless ssh to work the way oscar is set up, all the /home
> >> >> directories have to be mounted via nfs from the head node. Since the
> >> >> nfs mounts all broke when you rebooted the head node, fluent stopped
> >> >> working too.
> >> >>
> >> >> On Tue, Nov 11, 2008 at 4:17 AM, Ali Nazemian <[EMAIL PROTECTED]
> >
> >> >> wrote:
> >> >> > Hi again,
> >> >> > I installed OSCAR successfully , and all running test were
> successful
> >> >> > ,
> >> >> > after that i install fluent 64 on my head node Home directory and
> >> >> > tried
> >> >> > to
> >> >> > run parallel using ssh with that , every thing was okey and i
> succeed
> >> >> > with
> >> >> > running Fluent using parallel and with the default HP mpi of this
> >> >> > program .
> >> >> > everything was ok until i restart my headnode , after i restart my
> >> >> > head
> >> >> > node( it seems Fleunt made some changes that confilict with OSCAR)
> ,
> >> >> > i
> >> >> > tried
> >> >> > to running Fluent in parallel same as before , but i get some
> errors
> >> >> > and
> >> >> > it
> >> >> > doesnt start successfully , after that i tried to test OSCAR again
> >> >> > using
> >> >> > OSCAR WIZARD , but test became fail with some errors for mounting
> >> >> > Home
> >> >> > directory and also ssh , from node to server and server to node! (
> it
> >> >> > asking
> >> >> > for password!!) . so i tried to ssh client node on server using ssh
> >> >> > 10.0.0.2
> >> >> > and on the node for ssh server with using ssh 10.0.0.1 , both of
> them
> >> >> > was
> >> >> > succussful. i am wondering why ssh using terminal was successful
> but
> >> >> > with
> >> >> > OSCAR and Fluent became fail!!
> >> >> > Please give me some tips for using OSCAR and Fluent on same
> network.
> >> >> > Best regards.
> >> >> >
> >> >> > --
> >> >> > A.Nazemian
> >> >> >
> >> >> >
> >> >> >
> >> >> >
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> >> >> > _______________________________________________
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> >> >> >
> >> >> >
> >> >>
> >> >>
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> >> >
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> >> > A.Nazemian
> >> >
> >> >
> >> >
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> >>
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> >
> >
> >
> > --
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> >
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A.Nazemian
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