Install now, upgrade later?

[David Groos]

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 <djgroos at gmail.com>  
> 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  
> <ekul.taylor at gmail.com> 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 <djgroos at gmail.com>  
> 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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