Failed to use discovery over tagged vlan(trunk port) uefi pxe

Support
#1

Hi ,

I have tried configuring the discovery plugin using the documentation but have encountered an issue and would like your help .
My network setup consists of a bare metal server connected to trunk port using vlan tagging to connect to the network I am trying to do PXE boot with UEFI a little after the pxe boot starts , I see the following message: fetching netboot image
image
in this stage it hangs forever , I am unsure which provisioning template I should use for UEFI and I saw
some examples online which didn’t work.
I tried the following templates : pxegrub2_discovery , pxegrub2_discovery , PXELinux global default ,
I am unsure which parameters exactly to use and if the URL needs to contain 8443 port for example ,

my final goal after a successful discovery to my nodes is to clone one server os (Rocky 8.5 ) to another discovered server .

Foreman version 3.2.0 , foreman_discovery 20.0.1

your help will be appreciated :slightly_smiling_face: :pray:

#2

My guess is that there is something wrong with the TFTP server. Do you have logs or a packet capture? Netboot, and especially UEFI, can behave strangely depending on hardware. I would also suggest making sure that your hosts have the latest firmware.

#3

VLAN tagging is not well tested in Grub2 and there are probably some bugs. If you are able to isolate the mishehavior open Bugzillas to Red Hat.

#4

Thanks for your reply , to try and troubleshoot this issue I set the switch port to access mode instead of trunk , after this I discovery still didn’t work but when running the discovery image manually from host the discovery worked ,
what could be the issue ?
how can I provision the host with os rocky linux or clone another host to it ?
The documentation on your site is a bit general in my opinion and lacks screen shots and tutorials.
please advise.

#5

Hi ,

another question , I was able to discover a host manually booting to the FDI image from the management console, I get the below error when I try to deploy rocky 8.5 image ,
please tell me how I can disable the discovery process and deploy regual OS ,
which templates I need to use ?

image

#6

Docs about HTTP UEFI boot should help I guess.

#7

Done all the steps in the doc but I still get the above massage saying “Default PXE global template is set to discovery” , how do I disable this discovery process and switch to provision rocky linux 8.5?

#8

That message is just informative, you have to dig deeper. I see HTTP Boot in use, so check your network, firewalls – in HTTP Boot the host is fetching the grub configuration over HTTP. Also HTTP Boot support in grub2 is bugged quite a bit, make sure to use grub2 (on the smart proxy) from at least RHEL 8.5+ or Fedora.