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Hi again..
I've got something concrete now.
I found some discussions around dhcp option 12 and a suggestion that for option
12 to work the client cannot have a static name.
After the build run /etc/hostname was set to localhost - which I thought I read
should be ignored, however I rm'd /etc/hostname and rebooted the machine, sure
enough the machine name then set correctly from dhcp.
I guess I need to avoid /etc/hostname being populated with localhost?
Not sure what the correct way is to achieve this
Hashing out the line in /srv/fai/config/scripts/DEBIAN/40-misc
#fcopy -Mv /etc/hostname || echo $HOSTNAME > $target/etc/hostname
Works but I assume there's better places to be affecting this. It also only
works after the first reboot, the build run records its logs under localhost.
Thanks,
Stuart
From: Stuart Green
Sent: 30 January 2025 14:22
To: fully automatic installation for Linux
Subject: Re: New to FAI, having some issues building
One thing I have since noticed, the core networks dhcp server is sending
example.com as the dhcp domain and our sub domain is not included in the domain
search it provides. I can see in the fai boot.log of the localhost machine
that the domain is example.com and in the boot.log of the machine with the
correct dns name is oursubdomain.example.com, not sure if this is a problem,
nslookup works fine on machines with the core networks dhcp server sent
information.
Best Regards,
Stuart
From: Stuart Green
Sent: 30 January 2025 12:49
To: fully automatic installation for Linux
Subject: Re: New to FAI, having some issues building
Thanks Thomas and Matthew for the pointers. I've been testing for a few days
but I think I'm quite confused though what the workflow should be with
autodiscover.
In the guide it says about autodiscover "This lifts the necessity of having to
collect every client’s MAC address and configuring the DHCP daemon."
In my environment I have a vlan which is assigned to us. Within a management
system I can register dhcp reservations with mac address, create static IP
entries, or set an IP as reserved.
I don't have any access to the dhcp servers backend settings. Usually we
register machines as dhcp reservations with mac address.
I was having zero success getting the hostname to set - I tried Matthews trick
with fai-chboot - it didn't help me.
As a side note, I'm slightly confused about how the file created by fai-chboot
is involved in the autodiscover workflow, I see its interacted with at the end
of the autodiscover process where it sets the file .disable
I then decided to configure the dhcp daemon on the fai server, I also added the
new host to /etc/hosts and dhcp-edit and after running another build of a VM
the hostname became set!
I'm now able to get it consistently building a machine with the hostname set
correct in my Proxmox Environment where the FAI server is also hosted, however
when I tried to run the same build on baremetal yesterday the hostname was set
to locahost each time.
If dhcp is supposed to be setting the hostname is the issue likely to be that
the core networks dhcp server is not setup with use-host-decl-names on and
because the baremetal server is not sharing a backplane with the fai
server(whereas my test vms do) it always gets a broadcast response quicker from
the core networks dhcp server?
Best Regards,
Stuart
From: linux-fai on behalf of Thomas Lange
Sent: 27 January 2025 08:46
To: fully automatic installation for Linux
Subject: Re: New to FAI, having some issues building
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> On Thu, 23 Jan 2025 19:15:14 +, Stuart Green via linux-fai
> said:
> How are hostnames controlled/set when using autodiscover?
Usually the hostname is provided by the DHCP server (via the option
use-host-decl-names on).
This also work when using the autodiscover ISO.
--
regards Thomas
--- End Message ---
