LTSP-Cluster with 10.04 setup question

[Nicolas Roussi]

After a couple of weeks, I managed to answer my own questions. LTSP-cluster
apparently works on Lucid and I have the layout posted here:
http://nroussi.blogspot.com/2010/05/ltsp-cluster-with-ubuntu-1004-lucid.html

If anyone is interested you can check out the setup with one root server,
one application server and one thin client with an LDAP server and NFS
server.

Regards,


On Fri, Apr 30, 2010 at 6:01 PM, Nicolas Roussi <nroussi at gmail.com> wrote:

> Hi all,
> let me start off by saying that I just installed 10.04 on a VM and it looks
> and feels beautiful. By the way if anyone installs it as a virtual box
> guest, run the vobxadditions and before you restart you need to manually
> edit /usr/src/vboxvideo-x.x.x/vboxvideo_drm.c
> and add the following lines:
> Find the line .release = drm_release,
> and add the following below:
> #if defined(DRM_UNLOCKED) || LINUX_VERSION_CODE>= KERNEL_VERSION (2, 6, 33)
>         .unlocked_ioctl = drm_ioctl,
> #else
>                  .ioctl = drm_ioctl,
> #endif
> --->up to the #endif
>                  .mmap = drm_mmap,
>                ......
>
> As of today virtual box forums say that the fix will be included in the
> next release.
>
> Now, I want to make use of the LTSP-cluster feature that was available from
> 9.10 but after reading this guide
> https://help.ubuntu.com/community/UbuntuLTSP/LTSP-Cluster I am confused.
>
> First question: will this work on 10.04 since the page says it is specific
> to 9.10 only?
>
> Second: If my main subnet is 192.168.2.x and the thin client subnet is
> 192.168.0.x where is each server on? I understand you need to have one
> server called the root server, several application servers, the NFS file
> server with /home on it and an LDAP server. I need to increase the amount of
> thin clients to ~350 from 85 that I have now. The way that I am setup now
> does not involve any clustering.
> This is my setup:
> 192.168.2.x
>    |--->eth0 of LDAP server
>    |--->eth0 of edubuntu server #1 with LDAP client and NFS server with all
> /home
>         |---->eth1 192.168.0.x ~40 clients
>    |--->eth0 of edubuntu server #2 with LDAP client and NFS client to #1
>         |---->eth1 192.168.0.x ~45 clients
>
> This setup has worked perfectly for many years but I see the possibilities
> with ltsp clustering and would like to have a setup like that.
> In the section "Root server for LTSP Clustering" in the guide mentioned
> above, it says to install the dhcp server on it but it does not mention what
> subnet eth0 and eth1 lie on. Or maybe I am not understanding well? It is
> mentioned that the dhcpd.conf file that needs to be edited is the one in
> /etc/dhcp3 and not /etc/ltsp which my servers are currently using.
>
> If anyone can point me towards a working guide for lucid on ltsp clustering
> it would be greatly appreciated.
>
> Thanks
>
> --
> Nicolas Roussi
>



-- 
Nicolas Roussi
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