[K12OSN] K12LTSP Chrooted Environment Misunderstanding

Peter Scheie peter at scheie.homedns.org
Wed Jul 1 21:35:13 UTC 2009

What Todd wrote is correct.  In K12LTSP, access to the chroot environment on the 
client is via Ctrl-Alt-F1, but must first be enabled in the lst.conf file via 
the 'SCREEN02 = shell' parameter.  In the lts.conf file there is a parameter 
listed for enabling support for local apps, but it doesn't really work.  It was 
put there at the time more as a place holder for the future.  The reason LTSP 
4.2, on which K12LTSP was based, doesn't have a full chrooted environment is 
that the idea hadn't yet come to full fruition at the time.  If you need local 
apps, use K12Linux/LTSP5.


Todd O'Bryan wrote:
> The system in the chroot environment is very basic--it's just enough
> stuff to get the terminal up and running. Once the terminal is running
> a basic OS, it connects to the server and acts as a remote X session.
> When you log in on the terminal, you're logging onto the server, not
> the chroot environment that's running on the terminal. The idea is
> that a terminal that can only run basic stuff gets the full power of a
> much nicer server, because everything really runs on the server. The
> terminal is just a way of viewing the server processes.
> There is a way to get to the chroot environment that's running on the
> terminal--if I remember correctly, Ctrl-Alt-F1 will display a console
> that really is running on the terminal. But you'd only use that to
> debug problems, not as a normal operating mode.
> Todd
> On Mon, Jun 29, 2009 at 9:40 PM, murrah boswell<otrcomm at isp-systems.net> wrote:
>> Hello All,
>> I know everyone is busy and excited about Fedora 11 K12Linux, but I am
>> attached to the K12LTSP system and have a couple of questions. I know these
>> are questions out of antiquity for some people who have been with K12LTSP
>> from the beginning, but please humor me here.
>> I must have a misunderstanding about the /opt/ltsp/i386 chrooted environment
>> apparently. From a client terminal, when I right click on the desktop and
>> select to Create Launcher, Browse for Command and select File System, why is
>> it that the client terminal has full visibility of the server file system
>> and not just the chrooted environment? Same is true of a Terminal window; I
>> have total visibility of the server file system.
>> Is there a reason why the K12LTSP isn't truly a chrooted environment?
>> Along the same questioning, how do I install an application, such as
>> linphone, in the chrooted environment and force the client to use "local"
>> instantiation of linphone and not allow them to even see the server based
>> instantiation of linphone?
>> Regards,
>> Murrah Boswell
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