I find I'm not using the server kernel which surprises me--isn't that
the one that the 'alternate CD' used? Shouldn't that be the standard
install for a thin client server using Edubuntu?
So, how do I go about installing this kernel? I used the link that
Alkis provided and I could download the kernel. I couldn't access it
via Synaptic, probably because I've set sources to Jaunty but I
wasn't sure how to set some to Karmic. Any link/suggestion would be
appreciated! I don't want to willy-nilly upgrade a kernel, sounds
like risky business.
Thanks!
David
On Mar 19, 2010, at 4:35 PM, ekul taylor wrote:
Run
uname -r
which will tell you the specific build of the kernel you are
running. If the PAE kernel is in use it will have -pae in the
name. if you don't see that you'll need to install the linux-
server package.
You can also run free -m as a check to ensure all your ram is being
addressed. However much you think there is should match the total
column in MB. If it doesn't something isn't quite working.
On Fri, Mar 19, 2010 at 5:07 PM, David Groos <[email protected]>
wrote:
Thanks Ekul for the further info, I get it now. I think I'll use
solution #1 below--sounds like it is doable and will help out with
what I need for these last couple of months of school then over
summer power-up with a new Lucid install. I'm pretty sure I'm
currently using the server install. How can I tell?
David
On Fri, Mar 19, 2010 at 8:35 AM, ekul taylor
<[email protected]> wrote:
The 32/64 bit question is very complicated. Hopefully I can help.
Any AMD Opteron or Intel Xeon server made in the past few years has
support for running 32 bit and 64 bit code (even at the same
time). So you could clone your existing server and it would work
fine but you might not be able to take advantage of all of your RAM.
If you have more then 4 GB of RAM you have 3 options to use it all:
1. Clone your 32 bit server install but install the linux-server
package if it isn't already used. This kernel is PAE enabled which
is something Intel developed to let 32 bit processors address more
then 4 GB of RAM. It does have slight performance issues and no
one process can address more then 4 GB of RAM but for a terminal
server this isn't important.
2. Clone your 32 bit server but install and run a 64 bit kernel.
This can be tricky dependency-wise so I wouldn't recommend it so I
won't outline the many steps here.
3. Install a 64 bit version of edubuntu and reuse your
configuration files from your old server. It's pretty easy to do
since except for /etc/modules.d and /etc/modprobe.conf none of the
config files are about the kernel. You do have to build your
chroot a little differently if you use this option as thin clients
will almost certainly need a 32 bit boot environment. To do this
you use the command:
ltsp-build-client --arch i386
instead of just ltsp-build-client. This is what I option I would
use when installing lucid but if you're just going to be using
karmic for a few months option 1 will involve the least setup.
On Fri, Mar 19, 2010 at 9:11 AM, David Groos <[email protected]>
wrote:
Confusion compounds...
the one thing I might have understood...
If you install this kernel in Jaunty/Karmic, then you can access more
than 4 Gb of RAM while having 32 bit systems/OS:
http://packages.ubuntu.com/karmic/linux-server
So you can do that either in the old or the new server.
You're saying that:
--I could install the above kernel onto my current 32 bit hardware.
--then I could either:
--------install up to 64 Gb RAM on old server
or...
--------then I could clone this new setup to the new server.
?
Thanks,
David
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