[K12OSN] Edubuntu - K12LTSP

[David Trask]

This is great news!


jam at mcquil.com on Saturday, June 24, 2006 at 4:39 PM +0000 wrote:
>On Fri, June 23, 2006 12:53 pm, Andy Rabagliati wrote:
>> On Fri, 23 Jun 2006, Simon Faulkner wrote:
>>
>>> Hi All,
>>>
>>> I understand that the latest Edubuntu has k12LTSP built in?
>>>
>>> How do you do it?
>>>
>>> With the Fedora version you select K12LTSP during build then jut plug a
>>> terminal into the second network card and it works - how simple!
>>>
>>> I there a howto for K12LTSP on Edubuntu 6.06?   I have surfed and read
>a
>>> lot but none seem to show me...
>>
>> K12LTSP has an entire separate environment for the client, a quiet
>> backwater of operating system with waves made only by new X servers.
>>
>> Edubuntu creates the client environment from the mainstream kernel,
>> drivers and glibc, at install time. It can take a while.
>>
>> This makes it less stable, but has the huge advantage that apt and dpkg
>> work there, so you can install local apps, for instance. (There is a lot
>> more to getting local apps to work - ssh tunnels and things).
>
>I'll disagree about using mainstream binaries causing Ubuntu's LTSP to be
>less stable.  In fact, it *should* be more stable.  The only thing holding
>it back is the maturity of the glue holding it all together.  We've been
>doing legacy LTSP for a long time, and we've refined it pretty well.  On
>top of that, Eric has done a remarkable job packaging things up.  The
>Ubuntu developers are definately coming up to speed quickly on how thin
>client support should be integrated into a distro, and from what we saw
>this week at the Ubuntu developer summit in Paris, the next release of
>Ubuntu (Edgy) which is due out in late october, looks to be the one we've
>all been waiting for, in terms of thin client support from a mainstream
>linux vendor.
>
>
>>
>> The advantage from Canonical's perspective is that there is only one
>> kernel to maintain.
>
>Interesting to note that we talked about Ubuntu supplying a trimmed down
>kernel for their LTSP implementation.  My opinion is that the kernel is so
>modular, that you wouldn't realize any gain by stripping it down.
>
>>
>> And it all fits on one CD.
>>
>> I think that if you are an experienced administrator, you can use their
>> server environment (gdm set up correctly, font server tweaks) and if you
>> don't like their client, install the LTSP one.
>
>Using Ubuntu's LTSP without their LDM login manager is really quite
>simple.  Edit the lts.conf file (You might have to create it, as it
>doesn't exist by default in Ubuntu).  add this:
>
>[Default]
>  SCREEN_01 = startx
>
>Then, edit the /opt/ltsp/i386/etc/inittab file and comment out the getty
>starting on tty1.  I've heard reports that the performance is MUCH better
>by doing this.  Using the LDM causes the traffic to all be encrypted over
>ssh, which increases security, but unfortunately, has a huge negative
>impact on performance.
>
>>
>> That is what I do - mainly because only LTSP4.2 has local devices. 
>Yaay.
>
>The Edgy release of Ubuntu will have the same wonderful local device
>support that is in LTSP-4.2  Yaaaaaaaay !
>
>Jim McQuillan
>jam at Ltsp.org
>
>
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David N. Trask
Technology Teacher/Director
Vassalboro Community School
dtrask at vcsvikings.org
(207)923-3100