help configuring /etc/network/interfaces?

[Joseph Hartman]

Solved! Thanks for the help everyone. Scott's advice worked brilliantly. It
looks like somehow both network interfaces were designated as eth2 for some
reason, but I just deleted the 70-persistent-net.rules file in
/etc/udev/rules.d and restarted the system and all is good. Thanks for the
prompt replies all. Cheers -Joe

On Thu, Apr 1, 2010 at 9:59 PM, Joseph Hartman <jlhartman at gmail.com> wrote:

> Thanks for the help everyone. I'll try some of this tomorrow. I don't think
> the lack of a designated gateway is the problem. I should have mentioned
> that with the entire /interfaces file copied above, I get no internet on the
> server itself, although clients will boot just fine. To answer your question
> ekul, the LTSP server is part of the schoolwide network. I just need eth2 to
> be assigned an IP address from the DHCP server and it will give internet to
> the clients. I tried uncommenting that line below eth2 but it didn't change
> anything. This is the same /interfaces file on my other LTSP server and it
> works perfectly, except that the interfaces on that server are designated as
> eth0 and eth1, so when I cloned to the new server the interface designations
> were incorrect. I'll try Scott's suggestion of deleting the persistent
> network settings and seeing if it corrects anything. Thanks for the help,
> I'll report back tomorrow.
>
> On Thu, Apr 1, 2010 at 7:10 PM, ekul taylor <ekul.taylor at gmail.com> wrote:
>
>> The missing gateway also caught my eye.
>>
>> I was also wondering why you activate eth2 but don't assign it any
>> address.  The line that would use DHCP is commented out and from your ip
>> route list it appears to be getting an automatic private ip.  I assume that
>> has been assigned by NetworkManager.
>>
>> How does your ltsp sever connect to the internet?  It is connected
>> directly to a DSL or Cable modem?  Part of a school-wide network?  Something
>> else?  Whatever it is I think you need to specify how that interface should
>> be configured and make it the default route for the server.
>>
>>
>> On Thu, Apr 1, 2010 at 8:17 PM, Jordan Erickson <
>> jerickson at logicalnetworking.net> wrote:
>>
>>> Joseph,
>>>
>>> I don't see a 'gateway' stanza in your interfaces file for eth0..might
>>> explain no Internet access. ;)
>>>
>>>
>>> Cheers,
>>> Jordan
>>>
>>>
>>> ---
>>> Joseph Hartman wrote:
>>> > Hi all, I cloned a karmic ltsp server onto a new machine and can't
>>> > configure /etc/network/interfaces so that I get LTSP working and
>>> > Internet simultaneously. If /interfaces says:
>>> >
>>> >         # This file describes the network interfaces available on your
>>> >         system
>>> >         # and how to activate them. For more information, see
>>> interfaces(5).
>>> >
>>> >         # The loopback network interface
>>> >         auto lo
>>> >         iface lo inet loopback
>>> >
>>> >         # The primary network interface
>>> >         auto eth2
>>> >         # iface eth2 inet dhcp
>>> >
>>> >         auto eth0
>>> >         iface eth0 inet static
>>> >             address 192.168.0.254
>>> >             netmask 255.255.255.0
>>> >             network 192.168.0.0
>>> >             broadcast 192.168.0.255
>>> >             up iptables-restore < /etc/ltsp/nat
>>> >
>>> >
>>> > then I get my LTSP network working fine, but no Internet. In this
>>> > configuration "ip route" shows this:
>>> >
>>> >         192.168.0.0/24 <http://192.168.0.0/24> dev eth0_rename  proto
>>> >         kernel  scope link  src 192.168.0.254  metric 1
>>> >         192.168.0.0/24 <http://192.168.0.0/24> dev eth2  proto kernel
>>> >         scope link  src 192.168.0.254  metric 1
>>> >         169.254.0.0/16 <http://169.254.0.0/16> dev eth2  scope link
>>> >         metric 1000
>>> >         default via 192.168.0.254 dev eth2  proto static
>>> >
>>> >
>>> > If I delete everything below the "# iface eth2 inet dhcp" line,
>>> Internet
>>> > works great, but I don't get LTSP obviously. Can anyone help me out? I
>>> > don't get the "eth0_rename" thing at all, but I already tried renaming
>>> > eth0 to eth0_rename and it didn't help. Thanks -Joe
>>> >
>>>
>>>
>>> --
>>> Jordan Erickson
>>> (707) 636-5678 - http://www.logicalnetworking.net
>>> * Please consider the environment before printing this e-mail *
>>>
>>> --
>>> edubuntu-users mailing list
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>>
>>
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>
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