[Swift-devel] Connecting to nodes behind a login node

[Yadu Nand]

Thanks to David for pointing out a very simple solution for this.

I wanted to ssh to the compute nodes behind the login node directly,
and this can be done by setting up the ssh-config file to use the
ProxyCommand feature. I set up my ~/.ssh/config file on swift.rcc with
the following :
Host churn.mcs.anl.gov
    Hostname churn.mcs.anl.gov
    User yadunand
    ProxyCommand ssh -A yadunand at login.mcs.anl.gov nc %h %p 2> /dev/null
    ForwardAgent yes

Now, I can directly ssh to churn using : "ssh churn.mcs.anl.gov" from swift.rcc.

-Yadu

On Thu, Jun 27, 2013 at 4:04 PM, Yadu Nand <yadudoc1729 at gmail.com> wrote:
> Hi,
>
> I am trying to use the MCS nodes (crush, stomp, thwomp...) to test a
> bag-of-workstations configuration. Earlier I used a persistent
> coaster-service running on one of these nodes to get tests run, but I
> would much rather connect to these from swift.rcc. Is there some way
> to tell swift to make the ssh-connection taking a hop over the login
> node ?
>
> I can't seem to find a method for this outlined either in the guides
> or mailing-list conversations. Any help would be appreciated.
>
> Thanks!
> Yadu



-- 
Yadu Nand B