[syslinux] Using DNS in pxelinux.cfg

[Matthew Macdonald-Wallace]

Hi all,

First time here, so please be gentle! :)

I'm trying to configure a system that will pxeboot and retrieve a
kickstart file from a server based on that host's macaddress as part of
my Edison project[0] however I'm having issues getting the dns lookup to
work and I'm hoping you can help!

My pxelinux.cfg/default file is as follows:

=======================

default linux
prompt 0
timeout 1
label linux
        kernel /images/Centos-5.4-x86_64/vmlinuz
        ipappend 2
        append initrd=/images/Centos-5.4-x86_64/initrd.img
ksdevice=bootif text serial=tty0 kssendmac
ks=http://edison/api/kickstart/

=======================

However the image that pxeboots doesn't appear to support DNS lookups,
regardless of the fact that my DHCP config pushes a DNS Server out to
the PXE Client (proven using a liveCD running dhclient against the same
server).  The only way I can get this to work is to change the "ks"
stanza to the following:

ks=http://ip.ad.dr.ess/api/kickstart/

Is this a known issue, or am I missing something?

Kind regards,

Matt

[0] http://github.com/proffalken/edison/