It shouldn't be too hard at all. Off the top of my head you have to make sure of the following:
- the 2nd LAN NIC is assigned a new address in /etc/network/interfaces. The simple thing to do would be to assign the 2nd LAN NIC one subnet higher than the existing one. - dhcp server is listening on both gigE NICs. Modify /etc/dhcp3/dhcpd.conf to include a new section for the new subnet. It will be exactly the same as the section you already have just with different ip addresses. - If you are using local apps you'll need to add a firewall rule for the new subnet - If you are using direct X connections you'll need to make sure X listens and accepts connections on the new subnet On Mon, Mar 22, 2010 at 2:20 PM, David Groos <[email protected]> wrote: > Thanks again. > > This new server that's coming my way has 2, Giga NICs, and I would add a > third, 100 MB NIC to reach out to the WAN. I thought it would be great to > connect each Giga NICs to a separate switch which corresponds to a > classroom. First, does this setup work (couldn't find it on the wiki) and > second, how difficult might it be to configure this soon-to-be-cloned-server > which currently only has 2 NICs? > > David > > > On Sat, Mar 20, 2010 at 10:20 PM, ekul taylor <[email protected]>wrote: > >> It looks like what has happened is the package names have changed from >> jaunty to karmic. I don't see a -pae package in jaunty but it exists in >> karmic. And in karmic linux-server is a metapackage for the -pae kernel. >> >> Use the free -m command to check and see if ubuntu is seeing more then 4 >> GB of ram while booted in the -server kernel. If it is then you are all set >> >> >> On Sat, Mar 20, 2010 at 11:13 PM, David Groos <[email protected]> wrote: >> >>> Sorry to keep bothering! I got this: >>> dgr...@gcos2:~$ sudo aptitude install linux-generic-pae >>> [sudo] password for dgroos: >>> Reading package lists... Done >>> Building dependency tree >>> Reading state information... Done >>> Reading extended state information >>> Initializing package states... Done >>> Couldn't find any package whose name or description matched >>> "linux-generic-pae" >>> Couldn't find any package whose name or description matched >>> "linux-generic-pae" >>> No packages will be installed, upgraded, or removed. >>> 0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded. >>> Need to get 0B of archives. After unpacking 0B will be used. >>> Reading package lists... Done >>> Building dependency tree >>> Reading state information... Done >>> Reading extended state information >>> Initializing package states... Done >>> Any ideas? >>> David >>> >>> >>> >>> On Sat, Mar 20, 2010 at 10:02 PM, ekul taylor <[email protected]>wrote: >>> >>>> That's strange it didn't select the pae kernel. In that case install >>>> the linux-generic-pae package. >>>> >>>> sudo aptitude install linux-generic-pae >>>> >>>> >>>> On Sat, Mar 20, 2010 at 10:50 PM, David Groos <[email protected]>wrote: >>>> >>>>> Thanks Ekul. I didn't really understand what you meant by the dpkg so >>>>> didn't go with that but did understand the sudo aptitude part :) So I did >>>>> this, it installed, I rebooted and checked: >>>>> >>>>> dgr...@gcos2:~$ uname -r >>>>> 2.6.28-18-server >>>>> >>>>> Which doesn't have the -pae in the name. Any ideas? >>>>> David >>>>> >>>>> >>>>> >>>>> On Sat, Mar 20, 2010 at 4:29 PM, ekul taylor <[email protected]>wrote: >>>>> >>>>>> It's actually really easy to install a kernel if you use the >>>>>> repositories. dpkg adds your kernel to the list of available kernels so >>>>>> if >>>>>> for any reason you have trouble you can simply use grub to boot into your >>>>>> old kernel. Among all package installations a new kernel is among the >>>>>> safest since reverting is as easy as hitting escape during grub and >>>>>> choosing >>>>>> the old kernel. >>>>>> >>>>>> I'm not sure what package mixture you have so I can't really deal with >>>>>> that but installing the PAE kernel is as simple as: >>>>>> sudo aptitude install linux-server >>>>>> This will install the kernel and any necessary headers. If you want >>>>>> to run the karmic kernel but nothing else from karmic you'll have to do >>>>>> some >>>>>> apt pinning. >>>>>> >>>>>> As for the reason you don't have the pae kernel I believe it is only >>>>>> selected by default when installing via the server cd. Any other method >>>>>> you >>>>>> have to add it via apt after install. >>>>>> >>>>>> On Sat, Mar 20, 2010 at 12:34 PM, David Groos <[email protected]>wrote: >>>>>> >>>>>>> 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 >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> edubuntu-users mailing list >>>>>>>>>> >>>>>>>>>> [email protected] >>>>>>>>>> Modify settings or unsubscribe at: >>>>>>>>>> https://lists.ubuntu.com/mailman/listinfo/edubuntu-users >>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
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