[Ltsp-discuss] Creative use of LTSP

[Roland Giesler]

Hi all,

I'm looking for creative input in a project for an IT community centre in
Cape Town.

Instead of installing Ubuntu or similar on each hard drive (dual boot with
Win), I'm pursuing a method of booting off a central machine, but not
running from that. So "Fat clients" are good for this, but there are some
problems:

1. For an app to load, it gets loaded from the LTSP server. Once loaded,
running locally is fine, but in this scenario all the clients are linked
via good wifi. So the max speed is the wireless link speed which may be
too slow in practice.

2. Starting from the local hard disk would be fine, but then there's the
maintenance of each machine, which I'm hoping to centralise. So instead of
installing 48 machines, boot with PXE and load the local machine ready for
action. When software changes are made, these are then automatically
loaded at the next reboot.

3. I'm doing a bit of "thinking aloud" here, hoping that some will share
some insights! :-o

4. A possible scenario could be where the local drives are linked to the
server via nfs, the boot image is mirrored to all connected the drives.
When an application is launched, its actually launched form the local
drive, instead of the server, but the systems "thinks" it's from the server
due to the nfs linked drive.

Am I bordering on insanity? Please bear with me. There must be some
existing way to to deal with his, instead of building something from
scratch? Maybe LTSP is not the ideal tool for this? Is so, what can you
suggest?

thanks in advance

*Roland Giesler*

[Jigish Gohil]

On Fri, Jun 26, 2015 at 5:57 PM, Roland Giesler <***@giesler.za.net> wrote:

>
> 4. A possible scenario could be where the local drives are linked to the
> server via nfs, the boot image is mirrored to all connected the drives.
> When an application is launched, its actually launched form the local drive,
> instead of the server, but the systems "thinks" it's from the server due to
> the nfs linked drive.
>

This is not available in LTSP, in KIWI you can deploy system image on
the clients from a server via PXE booting, when the system image is
updated on the server then the client side image also get updated on
next reboot.

https://doc.opensuse.org/projects/kiwi/doc/#chap.pxe

You can use susestudio to create the images.
https://susestudio.com/help/use/pxe-image.html

With little work the system image can be modified to start LDM to get
full LTSP experience.

Cheers

-J

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[Jeff Siddall]

Honestly WiFi is going to be a big limitation no matter what you do. If
you really need WiFi you will likely need to consider some customization
to minimize the bandwidth limitations there.

If you can go to wires the problem goes away and all sorts of things
become possible (ex: http://drbl.org/)

One simple but effective tool I used a long time ago when I had to
manage fat clients was clusterssh:

https://github.com/duncs/clusterssh/wiki

Jeff

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[Johan Kragsterman]

Hi!


-----Jeff Siddall <***@siddall.name> skrev: -----
Till: ltsp-***@lists.sourceforge.net
Från: Jeff Siddall <***@siddall.name>
Datum: 2015-06-26 17:22
Ärende: Re: [Ltsp-discuss] Creative use of LTSP

Honestly WiFi is going to be a big limitation no matter what you do.  If
you really need WiFi you will likely need to consider some customization
to minimize the bandwidth limitations there.




Yeah, I wouldn't run LTSP on wifi. Perhaps another thin client solution like thinlinc?

https://www.cendio.com/

Johan


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      https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
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[Alkis Georgopoulos]

You can use an FSTAB_1= line in lts.conf to mount /home locally,
and xnbd-proxy to dynamically cache the NBD image locally as well.

It will require a bit of scripting, but it's within the LTSP use cases,
so once it's implemented, it can easily go upstream.



On 26/06/2015 03:27 μμ, Roland Giesler wrote:
> Hi all,
>
> I'm looking for creative input in a project for an IT community centre
> in Cape Town.
>
> Instead of installing Ubuntu or similar on each hard drive (dual boot
> with Win), I'm pursuing a method of booting off a central machine, but
> not running from that. So "Fat clients" are good for this, but there
> are some problems:
>
> 1. For an app to load, it gets loaded from the LTSP server. Once
> loaded, running locally is fine, but in this scenario all the clients
> are linked via good wifi. So the max speed is the wireless link speed
> which may be too slow in practice.
>
> 2. Starting from the local hard disk would be fine, but then there's the
> maintenance of each machine, which I'm hoping to centralise. So instead
> of installing 48 machines, boot with PXE and load the local machine
> ready for action. When software changes are made, these are then
> automatically loaded at the next reboot.
>
> 3. I'm doing a bit of "thinking aloud" here, hoping that some will share
> some insights! :-o
>
> 4. A possible scenario could be where the local drives are linked to the
> server via nfs, the boot image is mirrored to all connected the drives.
> When an application is launched, its actually launched form the local
> drive, instead of the server, but the systems "thinks" it's from the
> server due to the nfs linked drive.
>
> Am I bordering on insanity? Please bear with me. There must be some
> existing way to to deal with his, instead of building something from
> scratch? Maybe LTSP is not the ideal tool for this? Is so, what can
> you suggest?
>
> thanks in advance
>
> *Roland Giesler*
>


------------------------------------------------------------------------------
Monitor 25 network devices or servers for free with OpManager!
OpManager is web-based network management software that monitors
network devices and physical & virtual servers, alerts via email & sms
for fault. Monitor 25 devices for free with no restriction. Download now
http://ad.doubleclick.net/ddm/clk/292181274;119417398;o
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For additi