[K12OSN] Beta 6?

Fri Aug 10 19:46:44 UTC 2007

Are your Edubuntu servers going to be the DHCP servers for the network? 
For this they'll need to be....if so....then I can send you my dhcp config
to show you how to do it.  Basically how it works....

2 Edubuntu servers (both with one NIC) connected to the LAN
One is the primary and the other the secondard
Both server the exact same range, but an algorithm sets it up so first one
answers and then the other
In a perfect world...if you have a lab of 20 machines....10 will get their
address from server A and 10 from server B   (I've tested this and it is
the case, but then the users show up and there are more machines)

If Server A goes down....Server B hands out ALL the IP addresses until
Server A comes back online.  From an Edubuntu or LTSP standpoint....since
the TC's get their "image" from the server they get their DHCP from in
this case....the load gets split in half as TC#1 boots from Server
A...TC#2 boots from Server B...and so on.  Works slick!

Luis Montes <monteslu at cox.net> writes:
>Thanks for the help, everyone.
>
>Only thing I need now is the load balancing part to get back to where I 
>was with k12ltsp. Any tips or pointers to documentation of how you did it?
>In k12ltsp, I just load balanced by poining half the workstations at a 
>different server using lts.conf, but that doesn't cover failover.
>
>I'm not really so much set on edubuntu as I am getting a working Muekow 
>install before school starts up next week.
>
>
>Luis
>
>David Trask wrote:
>> Sound works fine in flash....go here
>>
>> https://help.ubuntu.com/community/EdubuntuFAQ
>>
>> near the bottom for the fix...piece of cake.  I have it working well. 
>> also on the Edubuntu site either in the docs or the wiki you'll find the
>> lts.conf variables.  I recently (last week) got two servers (Edubuntu)
>> with dhcp/load balance and failover along with a Samba/LDAP server using
>> smbldap-installer....up and running.  It was so easy it was
>> anti-climactic.  I'm still a K12LTSP fan and have been since the
>beginning
>> (I've used it at our school since September 2001...in
>earnest)...however,
>> I really like where Ubuntu and Edubuntu are headed.  The MueKow way of
>> doing things is the way of the future....there are still some bugs, but
>> each new release just gets SO MUCH better.  I would love to see the
>> Redhat/Fedora folks really get their act together and go nuts with
>> K12LTSP, but it ain't happening yet...at least publicly.  There will be
>> MAJOR new advances in Gutsy (the next release) that should speed things
>up
>> tremendously.  Once booted the terminals are fine....no diffs between
>> K12LTSP and Edubuntu.....it's the booting that takes a bit.  Be sure to
>> use Gideon Romms patched LDM for your current Edubuntu installation.
>>
>> I think it's here
>>
>>
>http://codebrowse.launchpad.net/~gideon/ltsp/gadi-ldm-mods-ltsp/download/gadi%40ltsp.org-20070521205254-ek710bofdpdtlwlz/x_Matt_Zimmerman_%3Cmatt.zimmerman%40canonical.com%3E_Tue_Jun__7_19%3A59%3A49_2005_32192.0/ldm
>>
>> and do this:
>>
>>   
>>> Replace your current "/opt/ltsp/i386/usr/sbin/ldm" with the new file
>>>     
>> (you may want to
>>   
>>> backup your current ldm just to be safe).  The in
>>>     
>> "/opt/ltsp/i386/etc/lts.conf" add the
>>   
>>> following line:
>>>
>>> LDM_DIRECTX=True
>>>     
>>
>> Hope this all helps!  :-)
>>
>> "Support list for open source software in schools." <k12osn at redhat.com>
>> writes:
>>   
>>> One day in and I've had some success and some extreme frustration.
>>>
>>> First the good stuff:
>>>
>>> Install went fine.
>>> Thin clients immediately booted up.
>>> The latest smbldap client script connected me right up.
>>>
>>> Now the problems:
>>>
>>> sudo... I guess it's better than switching to root like I've always
>done
>>> with redhat, but why does it only work on the server for GUI apps?
>>> The lts.conf is not nearly as nice as the one on k12ltsp. In fact, it's
>>> almost empty. I have no idea what the new variables are. The top of the
>>> file says I can read a gzipped example conf, but it doesn't exist on
>the
>>> server or in any repo that I can tell.
>>> Sound still doesn't work for me in flash on  a client and the only
>adobe
>>> flash thing i can see in the repo is the plugin itself.
>>>
>>> Luis
>>>
>>>
>>> ---- Jim Kronebusch <jim at winonacotter.org> wrote: 
>>>     
>>>> On Thu, 9 Aug 2007 13:22:08 -0700, monteslu wrote
>>>>       
>>>>> I have k12ltsp5EL & edubuntu discs sitting in front of me, and school
>>>>>         
>>> starts 
>>>     
>>>>> on Monday.
>>>>>
>>>>> As much as I love fedora, redhat hasn't done much to help integrate
>>>>>         
>>> Muekow. 
>>>     
>>>>> I'm gonna give edubuntu a shot.
>>>>>
>>>>> 1 smbldap server
>>>>> 2 edubuntu servers
>>>>> 70 thin clients.
>>>>>
>>>>> I'll report on my success or failure.
>>>>>         
>>>> You'll really like Edubuntu.  Download the modified LDM and enable
>>>>       
>>> LDM_DIRECTX=true in
>>>     
>>>> lts.conf for faster screen speeds.  FYI the Thin Client Manager
>>>>       
>>> (Edubuntu's TeacherTool)
>>>     
>>>> has some major issues at the moment, any VNC related features do not
>>>>       
>>> work.  Other than
>>>     
>>>> that Edubuntu is great.  
>>>>
>>>> If it helps you can steal the needed pieces from this tutorial for
>>>>       
>>> setting up LDAP
>>>     
>>>> authentication for your Edubuntu servers:
>>>>
>>>> http://www.1-cs.com/ubuntu_ldap_howto.txt
>>>>
>>>> Good luck.
>>>>
>>>> -- 
>>>> This message has been scanned for viruses and
>>>> dangerous content by the Cotter Technology 
>>>> Department, and is believed to be clean.
>>>>
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>>>>       
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>>>     
>>
>> <monteslu at cox.net>
>>
>> David N. Trask
>> Technology Teacher/Director
>> Vassalboro Community School
>> dtrask at vcsvikings.org
>> (207)923-3100
>>
>>
>>
>>   
>

David N. Trask
Technology Teacher/Director
Vassalboro Community School
dtrask at vcsvikings.org
(207)923-3100