Re: properly closing ldm logins

On Thu, Aug 21, 2008 at 09:14:57AM +0200, GARETTE Emmanuel wrote:
> Le mercredi 20 août 2008 à 10:23 -0700, Vagrant Cascadian a écrit :
> 
> > there was a patch to use "ssh -O exit", but this doesn't work with older
> > openssh-server versions (seems to work on debian lenny with 5.1, but not
> > 4.7- would be good to get feedback from other distros).
> 
> I just test it in etch and it's seems working great (with OpenSSH_4.3p2
> Debian-9etch2, OpenSSL 0.9.8c 05 Sep 2006):
> 
> Start master connexion:
> # /usr/bin/ssh -X -t -M -S toto localhost
> 
> Start a slave connexion:
> # ssh -X -t -S toto localhost
> 
> Stop connexions:
> # ssh -S toto localhost -O exit
> 
> All connexions are closed properly.
> 
> I don't have ltsp on this machin, but I don't understand why it didn't
> works for you.

that part works fine, yes.

what doesn't work is that when ldm makes the ssh connection starting the
Xsession script, on older versions of openssh-server, that doesn't
disconnect, so you never get a chance to run "ssh -O exit".

unless you background the ssh connection(or run multiple threads or some
such), in which case, it becomes difficult to figure out when to
actually call "ssh -O exit".

i have a feeling i'm going to explain this at least 100 more times...

live well,
  vagrant

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