Unreliable LTSP DHCP server: No DHCP offers received on client

[Stéphane Graber]

On 08/22/2012 04:38 PM, John Hupp wrote:
> Thanks.
> 
> /var/log/upstart/isc-dhcp-server.log does not exist, but
> isc-dhcp-server6.log does (perhaps related to the fact that this is an
> LTSP DHCP server and not a regular DHCP server?).
> 
> Its contents:
> 
>     /etc/dhcp/dhcpd6.conf does not exist! - Aborting...
>     Please create and configure /etc/dhcp/dhcpd6.conf to fix the problem.
>     isc-dhcp-server6 stop/pre-start, process 1094
> 
> But very interestingly, on another server for which the LTSP clients
> boot reliably, isc-dhcp-server6.log has the same contents!

That's the expected content for isc-dhcp-server6.log for a network
without IPv6.

Try running (one line):
sudo /usr/sbin/dhcpd -f -q -4 -pf /run/dhcp-server/dhcpd.pid -cf
/etc/ltsp/dhcpd.conf

From a shell, that should tell you what's failing.

> On 8/22/2012 3:21 PM, Stéphane Graber wrote:
>> On 08/22/2012 03:02 PM, John Hupp wrote:
>>> I have a couple small LTSP networks set up for testing.  On the network
>>> with Edubuntu 12.04, the LTSP client boot regularly fails at step one of
>>> the PXE boot with the message: "DHCP ..... No DHCP or proxyDHCP offers
>>> were received."
>>>
>>> Restarting the isc-dhcp-server service always works, but something about
>>> the boot process regularly causes it to fail to start.  The restart
>>> command output:
>>>     stop: Unknown instance:
>>>     isc-dhcp-server start/running, process (pid goes here)
>>>
>>> Dmesg includes these lines:
>>>     init: isc-dhcp-server main process ended, respawning
>>>     init: isc-dhcp-server main process (pid goes here) terminated
>>>     init: isc-dhcp-server respawning too fast, stopped
>>>
>>> Is anyone familiar with this problem?
>> Look in /var/log/upstart/isc-dhcp-server.log for details.
>>
>>
> 


-- 
Stéphane Graber
Ubuntu developer
http://www.ubuntu.com

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