AW: PXE boot with UEFI

[Sylvain MILOT]

On Tue, 3 Dec 2019, Frank Morawietz wrote:

> Many thanks Steffen and Merlin for your configuration details!
> I learned a lot already and I believe that we are on the right track.
>
> I included your suggestions into my  dhpcd.conf  .
> According to the log output below it seems to select the correct file now.
>
> But I still could not yet get it to work correctly.
>
> In order to debug this I increased the tftpd verbosity level. And this is what I now get in daemon.log when I try again:
>
> Dec  3 11:31:34 sysadm02 dhcpd[12875]: DHCPDISCOVER from 50:9a:4c:43:c1:b7 via ens9
> Dec  3 11:31:34 sysadm02 dhcpd[12875]: DHCPOFFER on 10.250.217.16 to 50:9a:4c:43:c1:b7 via ens9
> Dec  3 11:31:37 sysadm02 dhcpd[12875]: DHCPREQUEST for 10.250.217.16 (10.250.217.102) from 50:9a:4c:43:c1:b7 via ens9
> Dec  3 11:31:37 sysadm02 dhcpd[12875]: DHCPACK on 10.250.217.16 to 50:9a:4c:43:c1:b7 via ens9
> Dec  3 11:31:37 sysadm02 in.tftpd[13050]: RRQ from 10.250.217.16 filename fai/syslinux64.efi
> Dec  3 11:31:37 sysadm02 in.tftpd[13050]: tftpd: read: Connection refused
> Dec  3 11:31:41 sysadm02 in.tftpd[13052]: RRQ from 10.250.217.16 filename fai/syslinux64.efi
> Dec  3 11:31:41 sysadm02 in.tftpd[13052]: tftp: client does not accept options
> Dec  3 11:31:41 sysadm02 in.tftpd[13053]: RRQ from 10.250.217.16 filename fai/syslinux64.efi
>
> 10.250.217.16 is the installation client.
>
> Any idea which read failed for tftpd ?
> The syslinux files all are mode 644, so they are readable. Directories are 755.
> What may refuse the connection for tftpd?

have you considered tcp wrappers ?

ldd $(which in.tftpd) | grep wrap
         libwrap.so.0 => /lib/x86_64-linux-gnu/libwrap.so.0 (0x00007f9b39f41000)

perhaps this will solve the issue...

echo in.tftpd: ALL >> /etc/hosts.allow

change ALL for something more restrictive perhaps.

HTH,

---
Sylvain Milot (sylvain.milot at mcgill.ca)
Sr Research Systems Admin
Brain Imaging Centre
Montreal Neurological Institute
3801 University Street, Webster 2B, Room 206
Montreal, Qc., Canada, H3A 2B4
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