Re: [cobbler] Problem with PXE when DHCP not running on cobbler server

[Mann, Owen]

I believe pxelinux.0 will do the same thing regardless. Is the DHCP server Linux too? Can
you do a trace to confirm the correct offer is being given and accepted?
The process is like so:
1) PXE BIOS sends DHCP request
2) DHCP server replies with IP address, bootfile-name [i.e. "/pxelinux.0"],
next-server [i.e. cobbler], (etc.)
3) PXE BIOS sends TFTP GET request for next-server:/bootfile-name
4) PXE BIOS runs bootfile-name (pxelinux.0), which proceeds to download its config file

Can you confirm that:
a) the PXE BIOS is accepting the offer you think it is? Sometimes there's a rogue DHCP
server.
b) the next-server and bootfile-name given are the ones you think they are? If either is
wrong, you may be getting a different bootfile than you expect.
Sorry if I'm stating the obvious, but your log snips don't include this
information.

Also, if the config isn't there, does it go down the list - that is, does it try to
download:
pxelinux.cfg/AC1213C0
pxelinux.cfg/AC1213C
pxelinux.cfg/AC1213
pxelinux.cfg/AC121
...
pxelinux.cfg/default
? You should at least end up with the default config (which is a list of Cobbler
profiles).

Owen Mann, Interactive Data Real Time Services
60 Codman Hill Rd, Boxborough, MA 01719
978-795-3758 owen.mann(a)interactivedata.com


-----Original Message-----
From: cobbler-bounces(a)lists.fedorahosted.org
[mailto:[e-mail]] On Behalf Of Russ Lavoy
Sent: Monday, April 16, 2012 11:03 AM
To: cobbler mailing list
Subject: Re: [cobbler] Problem with PXE when DHCP not running on cobbler server

Not sure why you got put in my spam box, but you did :(...  Anyway, the pxelinux.0 file
are the same across all of the cobbler servers per an md5sum check.




----- Original Message -----
From: "Mann, Owen" <Owen.Mann(a)interactivedata.com&gt;
To: cobbler mailing list <cobbler(a)lists.fedorahosted.org&gt;
Cc: 
Sent: Monday, March 26, 2012 3:49 PM
Subject: Re: [cobbler] Problem with PXE when DHCP not running on cobbler server

It sounds like the problem is with the pxelinux.0 bootfile - that's what makes the
TFTP requests. Is the file your DHCP server is giving out the same as one that works? 

Thanks!

Owen Mann, Interactive Data Real Time Services
60 Codman Hill Rd, Boxborough, MA 01719
978-795-3758 owen.mann(a)interactivedata.com


-----Original Message-----
From: cobbler-bounces(a)lists.fedorahosted.org
[mailto:[e-mail]] On Behalf Of Russ Lavoy
Sent: Monday, March 26, 2012 4:34 PM
To: Russ Lavoy; cobbler mailing list
Subject: Re: [cobbler] Problem with PXE when DHCP not running on cobbler server

Anyone?  Any help would be grand.  

Thanks!


----- Original Message -----
From: Russ Lavoy <ussray_00(a)yahoo.com&gt;
To: &quot;cobbler(a)lists.fedorahosted.org&quot; <cobbler(a)lists.fedorahosted.org&gt;
Cc: 
Sent: Friday, March 9, 2012 1:46 PM
Subject: [cobbler] Problem with PXE when DHCP not running on cobbler server

I have a problem with pxe starting a server when cobbler is NOT the dhcp server.  I am
unsure why this is but here is the problem.

When you create a new server it creates /tftproot/pxelinux.cfg/$MAC_ADDRESS which is fine
and works create on my other cobbler systems.  But since this one server is not the dhcp
server I get a problem where when the kickstarted server requests its configuration it
looks for the hex version of the IP address and not the mac address like in the other
cobbler server setup.  Or example..  from my log

Mar  7 13:32:13 servername in.tftpd[22679]: RRQ from 172.18.18.55 filename
pxelinux.cfg/AC1213C0

It does not look for the mac address ever.

Since cobbler does not make the hex version of the IP in this manner it kicks back an
error saying it cannot be found.

I fix this by creating a symlink from the mac address to the hex version of the IP...
 Then it works.

This breaks automation for cobbler.

Does anyone have any ideas on how to fix this?

Thanks!

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This message (including any files transmitted with it) may contain confidential and/or
proprietary information, is the property of Interactive Data Corporation and/or its
subsidiaries, and is directed only to the addressee(s). If you are not the designated
recipient or have reason to believe you received this message in error, please delete this
message from your system and notify the sender immediately. An unintended recipient's
disclosure, copying, distribution, or use of this message or any attachments is prohibited
and may be unlawful. 
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