Help! Would you recommend running ltsp on Ubuntu 8.04 or 8.10?

[john]

Hi Steve,


On Tue, Feb 17, 2009 at 1:03 PM, Steve Rippl <rippls at woodlandschools.org> wrote:
> Now I never found out why but both dhcp and authentication via winbind (or
> ldap) to Active Directory seem to be broken in 8.04 (running ltsp 5).
Interesting was there a bug filed I wonder. I'll go look.

  If
> you look back over the last few (4-5) months on this list you'll find myself
> and one or two others found dhcp couldn't handle more than about 5 clients
> booting at once (the clients would hammer the dhcp server for multiple
> requests each), and our entire server would grind to a halt if more than a
> few users tried to log in at once (separate issues).

Would the system handle staggered log ins? For example if students
logged in 30 secs apart?


> We're authenticating
> to AD with ldap and also have NFS shares set up like you, our load average
> on the server would soar to 16 and beyond (2 dual core processors) and would
> never come down again!

Hmm. Interesting.  I've setup an snmp monitor to help try an capture
more data on the problem. I'll be sure to check CPU load.
>
> We went back to ltsp 4 again and everything seemed to run much much faster.
> Now we're working to build another server and trying ltsp 5 again (on
> Debian) to see were things are.
>
> No answers I'm afraid, but it sounds similar to what we found...

I appreciate the ideas!

John

>
>
> john wrote:
>
> On Tue, Feb 17, 2009 at 12:38 PM, Steve Rippl
> <rippls at woodlandschools.org> wrote:
>
>
> What authentication methods are you using?  Are the users local or remote
> (ldap/Active Directory?)
>
>
> Hi Steve,
>
> I am using Winbind/Active Directory. Users have a home directory on
> the server and a network share which is mounted via NFS.
>
> John
>
>
>
>
>
> john wrote:
>
>
> Hi all,
>
> I've been trying to migrate from 7.04 to 8.04 since last fall. I can
> only do it during downtime at our school. I have this week while kids
> are on break to try and get the new system in.  My problem is that  I
> can't seem to scale the LTSP installation based on 8.04 past 6-8 thin
> clients before the server crashes. The server is running 16 gigs ram/
> AMD 64 image with Ntavo 6030 thin clients each with 512M ram. The thin
> clients are rolled with the i386 image.
>
> I can't find anything in the logs that shows me where the problem
> lies.  I've been running 7.04 successfully for a couple of years now
> so I feel like the problem lies with 8.04 somewhere. I am trying to
> decide whether to can 8.04 and begin working on 8.10.  Or perhaps
> retry 8.04 under 32 bit with the Server-Image kernel for larger memory
> support. Can any one give me some guidance? Did you make 8.04 work
> just fine (if so did you do it under 32 or 64) or did you end up going
> for the latest and the greatest?  All things being equal I'd prefer to
> run 8.04 since it'll be supported till 2011.
>
> Thanks for any advice.
>
> John
>
>
>
>
> --
> Steve Rippl
> Technology Director
> Woodland School District
> 360 225 9451 x326
>
>
>
>
>
>
> --
> Steve Rippl
> Technology Director
> Woodland School District
> 360 225 9451 x326
>