Thin clients not booting - help?

[David Groos]

Hi Joseph,
I was looking at your /etc/network/interface file and noticed that all you
have for eth0 is the: "auto eth0" and it doesn't tell how it should connect
such as via dhcp:
      auto eth0
      iface eth0 inet dhcp

or take on a static ip as I do on my server such as:
      auto eth0
      iface eth0 inet static
              address 10.51.0.199
              netmask 255.255.0.0
              gateway 10.51.0.1

For the connection to the switch/thin/fat clients I use these lines:
      auto eth1
      iface eth1 inet static
              address 192.168.0.1
              netmask 255.255.255.0
              up iptables-restore < /etc/ltsp/nat

You didn't mention that you rebooted the server after adjusting the
70-persistent-net.rules?

Good luck!
David

On Thu, Sep 1, 2011 at 11:07 PM, Joseph Bishay <joseph.bishay at gmail.com>wrote:

> Hello,
>
> I hope everyone is doing well.
>
> I have a cleanly installed Edubuntu 11.04 server in the classic 2-NIC
> format.  I realized after installation, but before I tried to connect
> any thin clients, that it was better to reverse the NICs so the Intel
> one was running the thin clients.  I was able to successfully do so
> via modification of /etc/udev/rules.d/70-persistent-net.rules and
> reversing the two lines.
>
> Now I wanted to try to book a thin client.  Took a switch and plugged
> the LTSP NIC from the server and a thin client into the switch.  And
> the thin client fails to PXE boot -- can't find the DHCPD server.
>
> Ideally I'd like eth0 to be the Internet NIC and eth1 to be the LTSP
> NIC on the 10.x.x.x. subnet.
>
> So I hunted around and find that the dhcpd3 service is not running.
> Every time I try to run it on the server I get:
>
> sudo service isc-dhcp-server start:
> * Starting ISC DHCP server dhcpd
> * check syslog for diagnostics.  [fail]
>
> Checking syslog I get:
>
> eduLTSP dhcpd: Wrote 0 leases to leases file.
> eduLTSP dhcpd:
> eduLTSP dhcpd: No subnet declaration for eth1 (no IPv4 addresses).
> eduLTSP dhcpd: ** Ignoring requests on eth1.  If this is not what
> eduLTSP dhcpd:    you want, please write a subnet declaration
> eduLTSP dhcpd:    in your dhcpd.conf file for the network segment
> eduLTSP dhcpd:    to which interface eth1 is attached. **
> eduLTSP dhcpd:
> eduLTSP dhcpd:
> eduLTSP dhcpd: Not configured to listen on any interfaces!
>
> I've tried to search online and tried a bunch of steps but been unable
> to resolve this!  Here are the relevant configuration files:
> ---
> jbishay at i7-eduLTSP:~$ cat /etc/networks
> # symbolic names for networks, see networks(5) for more information
> link-local 169.254.0.0
> ---
> jbishay at i7-eduLTSP:/etc/network$ cat interfaces
> auto lo
> iface lo inet loopback
>
> auto eth0
>
> #auto eth1
>
> iface eth1 inet static
> # address 192.168.0.254
> address 10.0.0.254
> netmask 255.255.255.0
> broadcast 10.0.0.255
> ---
> jbishay at i7-eduLTSP:/etc/ltsp$ cat dhcpd.conf
> #
> # Default LTSP dhcpd.conf config file.
>
> authoritative;
>
> subnet 10.0.0.0 netmask 255.255.255.0 {
>    range 10.0.0.1 10.0.0.250;
>    option domain-name "edultsp.stgr.org";
>    option domain-name-servers 192.168.1.1;
>    option broadcast-address 10.0.0.255;
>    option routers 192.168.1.1;
> #    next-server 192.168.0.1;
> #    get-lease-hostnames true;
>    option subnet-mask 255.255.255.0;
>    option root-path "/opt/ltsp/i386";
>    if substring( option vendor-class-identifier, 0, 9 ) = "PXEClient" {
>        filename "/ltsp/i386/pxelinux.0";
>    } else {
>        filename "/ltsp/i386/nbi.img";
>    }
> }
> ---
> jbishay at i7-eduLTSP:/etc/default$ cat isc-dhcp-server
> # Defaults for dhcp initscript
> # sourced by /etc/init.d/dhcp
> # installed at /etc/default/isc-dhcp-server by the maintainer scripts
> #
> # This is a POSIX shell fragment
> #
> # On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
> #       Separate multiple interfaces with spaces, e.g. "eth0 eth1".
> INTERFACES="eth1"
> ---
>
> I believe that is all the relevant files-- if I missed something
> please just tell me and I'll post it here!
>
> So I'm at a loss -- what do you recommend?
>
> Thanks!
> Joseph
>
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