HOSTNAME in nfsroot boot is FQDN

[John G Heim]

I posted about this problem approximately a year ago. I poked around in 
the source code a little but finally just made a workaround by adding a 
line to my class script:

echo "${HOSTNAME}" | sed s/\.math\.wisc\.edu//

So you end up with classes for both the fqdn and the hostname. The only 
problem with that seems to be that logs are created in 
/var/log/fai/<fqdn>/ instead of /var/logs/fai/<hostname>/.

I am a little surprised you're getting this in 5.3.6. I was running 
5.0.3 when I had the problem. I create a whole new FAI setup for 5.3.6 
and I don't have the problem any more. Are you using 5.3.6 in the 
nfsroot? I'm not sure how FAI installs FAI itself inside the nfsroot but 
you might be running an older version there. I am also installing ubuntu 
zesty instead of xenial but I don't see how that could matter.


On 06/08/2017 04:40 AM, Justin Cattle wrote:
> Hi,
> 
> 
> I've been testing migrating to fai 5 from 4.
> I'm currently using fai-5.3.6, on Ubuntu xenial, but with a Debian 
> stretch nfsroot [ due to lack of dracut support in ubuntu ].
> 
> When I build a host, the boot all works ok and the build process starts 
> fine.
> However, the hostname of the instance is somehow getting set to the FQDN.
> 
> It sounds like a small problem, but has a knock on effect on some of our 
> custom class assignment scripts.
> 
> I know that dhcp is sending the correct host-name.
> 
> 
> It looks like FAI set's the HOSTNAME variable from this script passed 
> from dhclient:
> 
>     root      1531  0.0  0.0  21484  1076 ?        Ss   10:21   0:00
>     dhclient -lf /dev/null -cf /usr/share/fai/dhclient-fai.conf -sf
>     /usr/share/fai/dhclient-fai-script eth0
> 
> 
> Am I right in thinking that?
> 
> Any ideas on how I can fix or debug this so HOSTNAME is set to the 
> host-name requested from DHCP?
> 
> It's not even obvious to me where the dhcp config for fai that calls 
> that script is set.
> 
> 
> Any help or info is greatly appreciated.
> Thanks!
> 
> 
> 
> Cheers,
> Just
> 
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