[Kea-users] KEA and pxeboot

[Stephen Berg, Code 7309]

Can someone weigh in on why this host reservation is not working?  Basic 
dhcp works but when I add the next-server and boot-file-name to pxeboot 
it fails. I get the two errors in the log that I'm running in debug 
level currently.
{
     "ip-address": "192.168.100.100",
     "hostname": "server1",
     "hw-address": "aa:bb:cc:dd:ee:ff",
     "next-server": "192.168.100.1",
     "boot-file-name": "pxelinux.0"
  },

2022-02-26 07:09:26.875 DEBUG [kea-dhcp4.packets/13158.140019375193408] 
DHCP4_SUBNET_SELECTION_FAILED [hwtype=1 aa:bb:cc:dd:ee:ff], 
cid=[01:aa:bb:cc:dd:ee:ff], tid=0x396c44b0: failed to select subnet for 
the client
2022-02-26 07:09:26.875 DEBUG 
[kea-dhcp4.bad-packets/13158.140019375193408] DHCP4_PACKET_DROP_0002 
[hwtype=1 aa:bb:cc:dd:ee:ff], cid=[01:aa:bb:cc:dd:ee:ff], 
tid=0x396c44b0, from interface eth0: no suitable subnet configured for a 
direct client

The client system never gets an IP and of course never starts into the 
pxeboot process.

On 2/23/2022 9:17 AM, Stephen Berg, Code 7309 via Kea-users wrote:
> Where can I find documentation on setting up pxebooting to do linux 
> installs?  I'm running kea-1.8.0-2 on Rocky Linux 8.5.  I want to be 
> able to pxeboot different OS's like centos 7.x, rocky 8.x and future 
> releases.  The tftp-server is installed and setup, syslinux packages 
> are installed.  I've got just a couple clients defined in dhcp as 
> reserved leases and added next-server and filename options for one but 
> when I boot the network from that client it never seems to get to the 
> pxelinux.0 or the defined kernel in the "pxelinux.cfg/01-macaddress" 
> file.
>
> I figure I'm probably missing some setup in the kea-dhcp4.conf file 
> but can't find what the missing parts might be.
>
> My old setup is centos 6, dhcp-4.1.1.  I'd add the next-server and 
> filename lines for a particular host reservation then use pxeboot to 
> setup the pxelinux.cfg file and that would have kernel parameters to 
> boot the installer and read a kickstart file.  Right now I can get the 
> new system to boot from the network, it gets an IP from kea but then 
> fails to find the tftp file to boot from.
>
>

-- 
Stephen Berg, IT Specialist, Ocean Sciences Division, Code 7309
Naval Research Laboratory
W:   (228) 688-5738
DSN: (312) 823-5738
C:   (228) 365-0162
Email: stephen.berg at nrlssc.navy.mil  <- (Preferred contact)
Flank Speed: stephen.p.berg.civ at us.navy.mil

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