[Ltsp-discuss] Ubuntu 16.04 with LTSP

[Ondřej Rusek]

Hi,
for several years I'm using LTSP for classrooms in our school. Now, we
have about 70 TC (Thin Clients) with LTSP runing with Ubuntu 12.04
(several virtualized application servers).

My question is, how anybody has some experiences with becoming new
Ubuntu 16.04 Xenial Xerus with LTSP.
Thx.


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-------------------------------------------------
Ing. Ondrej Rusek
GYmnazium BOzeny Nemcove, Hradec Kralove, Czech
***@gybon.cz, http://www.gybon.cz/~rusek
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[Valtteri Suojanen]

what i have seen in discussion and launchpad LTSP should be already
packaged and supported in ubuntu 16.04 but the whole Ubuntu 16.04, it' not
yet officially released. First experiments usually come weeks after Ubuntu
team release day.

Are you with your question after some specific application, desktop,
hardware, network feature or plugin?

I'm sure that LTSP developers have not removed from the LTSP anything you
might have now in 12.04. LTSP, LDM and ltspfs should be still there in the
package

You could test upstream LTSP availablr for 12.04 directly from developers
PPA

if you haven't used the new featured and recommended ltsp-pnp method yet
and even if you didn't wan't to use the method in future - make sure you
read at least once all information here:

https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp

This page will help you get started expirimenting the same LTSP you will
have when/if you install and run LTS 16.04 (after next week or later)

Br,
Valtteri
16.4.2016 22.44 "Ondřej Rusek" <***@gybon.cz> kirjoitti:

> Hi,
> for several years I'm using LTSP for classrooms in our school. Now, we
> have about 70 TC (Thin Clients) with LTSP runing with Ubuntu 12.04
> (several virtualized application servers).
>
> My question is, how anybody has some experiences with becoming new
> Ubuntu 16.04 Xenial Xerus with LTSP.
> Thx.
>
>
> --
> S pozdravem
>
> --
> -------------------------------------------------
> Ing. Ondrej Rusek
> GYmnazium BOzeny Nemcove, Hradec Kralove, Czech
> ***@gybon.cz, http://www.gybon.cz/~rusek
> -------------------------------------------------
>
>
>
> --
> Tato zprava byla prohledana na vyskyt viru
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> MailScanner a zda se byt cista.
>
>
>
> ------------------------------------------------------------------------------
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> Manager
> Applications Manager provides deep performance insights into multiple
> tiers of
> your business applications. It resolves application problems quickly and
> reduces your MTTR. Get your free trial!
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> _____________________________________________________________________
> Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto:
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>

[Vinícius Ferrão]

I'm on the same boat. Testing will start in the middle of May for me.

After four years, it's time to upgrade.

Sent from my iPhone

On Apr 16, 2016, at 18:00, Valtteri Suojanen <***@gmail.com<mailto:***@gmail.com>> wrote:


what i have seen in discussion and launchpad LTSP should be already packaged and supported in ubuntu 16.04 but the whole Ubuntu 16.04, it' not yet officially released. First experiments usually come weeks after Ubuntu team release day.

Are you with your question after some specific application, desktop, hardware, network feature or plugin?

I'm sure that LTSP developers have not removed from the LTSP anything you might have now in 12.04. LTSP, LDM and ltspfs should be still there in the package

You could test upstream LTSP availablr for 12.04 directly from developers PPA

if you haven't used the new featured and recommended ltsp-pnp method yet and even if you didn't wan't to use the method in future - make sure you read at least once all information here:

https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp

This page will help you get started expirimenting the same LTSP you will have when/if you install and run LTS 16.04 (after next week or later)

Br,
Valtteri

16.4.2016 22.44 "Ondrej Rusek" <***@gybon.cz<mailto:***@gybon.cz>> kirjoitti:
Hi,
for several years I'm using LTSP for classrooms in our school. Now, we
have about 70 TC (Thin Clients) with LTSP runing with Ubuntu 12.04
(several virtualized application servers).

My question is, how anybody has some experiences with becoming new
Ubuntu 16.04 Xenial Xerus with LTSP.
Thx.


--
S pozdravem

--
-------------------------------------------------
Ing. Ondrej Rusek
GYmnazium BOzeny Nemcove, Hradec Kralove, Czech
***@gybon.cz<mailto:***@gybon.cz>, http://www.gybon.cz/~rusek
-------------------------------------------------



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[roland]

Me, too.
We are running a 14.04 ltsp with 100 fat clients
an I want to upgrade to 16.04 in June.
Roland

Am 16.04.2016 um 23:27 schrieb Vinícius Ferrão:
> I'm on the same boat. Testing will start in the middle of May for me.
>
> After four years, it's time to upgrade.
>
> Sent from my iPhone
>
> On Apr 16, 2016, at 18:00, Valtteri Suojanen <***@gmail.com
> <mailto:***@gmail.com>> wrote:
>
>

[Alkis Georgopoulos]

I've spend months developing LTSP so that it works very well with Ubuntu
16.04.

I mostly tested with the gnome-flashback session, but other DEs should
also work (Mate, Unity, LXDE, XFCE etc).

I propose this tutorial to install LTSP:
https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp

...and I also propose that you always have the Greek schools PPA in your
sources, as that's where I'm sending the new fixed LTSP versions
whenever I find new issues.

Enjoy,
Alkis Georgopoulos
LTSP developer


On 17/04/2016 11:23 πμ, roland wrote:
> Me, too.
> We are running a 14.04 ltsp with 100 fat clients
> an I want to upgrade to 16.04 in June.
> Roland
>

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[Ondřej Rusek]

Thanks all folks of yours answers...

For our LTSP, I'm using packages from distro channels. PPA of Greek
schools is good tip for me, thanks.

We have several LTSP classrooms - every class is separate subnet. In
this 'class subnet' is one 'root' LTSP server for booting TC's, with
DHCP for this subnet and act as a router. In this subnet is several
'apps' servers. With lts.conf is every TC directed do one of apps. All
servers are virtualized. This concept is inspired with ltsp-cluster...

I read article about ltsp-pnp, but I think, that for our LTSP concept
is better use 'standard' LTSP (no pnp).
I'm thinking correctly?

P.S. Many thanks for developing LTSP!

Alkis Georgopoulos píše v Ne 17. 04. 2016 v 12:09 +0300:
> I've spend months developing LTSP so that it works very well with Ubuntu
> 16.04.
>
> I mostly tested with the gnome-flashback session, but other DEs should
> also work (Mate, Unity, LXDE, XFCE etc).
>
> I propose this tutorial to install LTSP:
> https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
>
> ...and I also propose that you always have the Greek schools PPA in your
> sources, as that's where I'm sending the new fixed LTSP versions
> whenever I find new issues.
>
> Enjoy,
> Alkis Georgopoulos
> LTSP developer
>
>
> On 17/04/2016 11:23 πμ, roland wrote:
> > Me, too.
> > We are running a 14.04 ltsp with 100 fat clients
> > an I want to upgrade to 16.04 in June.
> > Roland
> >


--
S pozdravem

--
-------------------------------------------------
Ing. Ondrej Rusek
GYmnazium BOzeny Nemcove, Hradec Kralove, Czech
***@gybon.cz, http://www.gybon.cz/~rusek
-------------------------------------------------



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[Alkis Georgopoulos]

On 17/04/2016 11:22 μμ, Ondřej Rusek wrote:
> I read article about ltsp-pnp, but I think, that for our LTSP concept
> is better use 'standard' LTSP (no pnp).
> I'm thinking correctly?

What are your client specifications? Which CPU and how much RAM?

Why do you separate apps per server? Don't all clients need e.g. a web
browser or libreoffice or educational software etc?

Isn't it possible for each classroom to have one server with all the
apps installed in it?

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[Ondřej Rusek]

Alkis Georgopoulos píše v Ne 17. 04. 2016 v 23:37 +0300:
> On 17/04/2016 11:22 μμ, Ondřej Rusek wrote:
> > I read article about ltsp-pnp, but I think, that for our LTSP concept
> > is better use 'standard' LTSP (no pnp).
> > I'm thinking correctly?
>
> What are your client specifications? Which CPU and how much RAM?

Zotac Zbox - ION (Dual Core Atom with NVidia), 1GB RAM (I think...)

> Why do you separate apps per server? Don't all clients need e.g. a web
> browser or libreoffice or educational software etc?

One class has 32 clients. I thing is better direct clients to more
servers, not only to one (...to much clients for one server). Separate
LTSP server (root server) for booting all clients, running applications
on more different servers. Application servers (two for one class) are
identical (virtual clone).
Separate boot server (LTSP) from application server is for better
performance -this is the basic idea for this concept.
It's wrong?

> Isn't it possible for each classroom to have one server with all the
> apps installed in it?

Yes, it's possible, but 32 clients with one server...?

Maybe the better way is 'fat-client', but at this time I haven't any
experiences with this solution.

--
S pozdravem

--
-------------------------------------------------
Ing. Ondrej Rusek
GYmnazium BOzeny Nemcove, Hradec Kralove, Czech
***@gybon.cz, http://www.gybon.cz/~rusek
-------------------------------------------------



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[Asmo Koskinen]

18.04.2016, 00:41, Ondřej Rusek kirjoitti:
> Zotac Zbox - ION (Dual Core Atom with NVidia), 1GB RAM (I think...)
>
> Yes, it's possible, but 32 clients with one server...?

I think that you can go with LTSP-PNP and use Zotac boxes as fat
clients, they are good enough. So much easier setup.

Best Regards Asmo Koskinen.



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[Alkis Georgopoulos]

On 18/04/2016 12:41 πμ, Ondřej Rusek wrote:
> Zotac Zbox - ION (Dual Core Atom with NVidia), 1GB RAM (I think...)

This box:
https://www.zotac.com/us/product/mini_pcs/id40

Has this processor, with a passmark score of 700:
https://www.cpubenchmark.net/cpu.php?cpu=Intel+Atom+D525+%40+1.80GHz

For new computer labs it's best that we select clients with at least
1500 score, but OK those D525 clients should be good enough for fat clients.

You can try booting one of them with a Live Ubuntu USB stick, and see if
it performs better than what you have now with them as thin clients.

So yup like Asmo said, use the ltsp-pnp guide to have one server and 32
LTSP fat clients per classroom.

For load balancing, you may also use one separate LDM_SERVER machine for
centralized authentication and /home, and even make it dual NIC with
bonding for increased efficiency.


Btw I'm available for paid LTSP support if anyone's ever interested.
E.g. if in a couple of hours I could help people arrange their computer
labs to be many times more efficient, it'd be worth it, and you'd also
be supporting further LTSP development.

Cheers,
Alkis Georgopoulos
LTSP developer

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[Asmo Koskinen]

16.04.2016, 22:17, Ondřej Rusek kirjoitti:
> for several years I'm using LTSP for classrooms in our school. Now, we
> have about 70 TC (Thin Clients) with LTSP runing with Ubuntu 12.04
> (several virtualized application servers).

Here I tested that with VirtualBox.

Setup in laptop.

LTSP-SERVER: http://ltsp.fi/howto/LTSP-PNP/Virtualbox/LTSP-SERVER.png
LTSP-TC: http://ltsp.fi/howto/LTSP-PNP/Virtualbox/LTSP-TC.png

Virtualbox Video Capture.

LTSP-SERVER: http://ltsp.fi/howto/LTSP-PNP/Virtualbox/LTSP-SERVER.webm
LTSP-TC: http://ltsp.fi/howto/LTSP-PNP/Virtualbox/LTSP-TC.webm

Best Regards Asmo Koskinen.

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