On 27/07/17 19:06, Lonnie Cumberland wrote:
The reason that I need to boot iPXE from an iso is because I am booting
from public hosted VPS machines that are located on the Internet.
I can boot each machine and now get to the iPXE shell. How can I have
the iPXE call the dnsmasq that I have running on another VPS machine at
boot.example.com <http://boot.example.com> as an example. I am trying
to find, in the iPXE site and docs that show me how to have the iPXE
shell call the bootp server so that it can return the IP and send over
to the TFTP server to start returning the OS to be loaded onto the VPS
machine?
Don't use TFTP. Since you already have iPXE loaded, you can just use
HTTP to perform the rest of the boot.
Public cloud providers typically allow you to configure some kind of
metadata associated with virtual machine instances. For example, Amazon
Web Services lets you specify an arbitrary blob of "user-data". You can
use this to hold an iPXE script that will control the boot. See, for
example:
http://git.ipxe.org/ipxe.git/commitdiff/cc25260
or
http://git.ipxe.org/ipxe.git/commitdiff/de85336
You could have your iPXE perform a standard DHCP request, and use the
DHCP server to control the boot process. However, public cloud
providers often do not allow you to either control the DHCP
configuration or run your own DHCP server. You will almost certainly
find the above metadata-based approach to be easier.
Michael
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