Hello,
I'm successfully using xCAT 2.15.1 to provision CentOS 8.1 stateless nodes.
For that matter my osimage has got the confignetwork -s postscript
configured.
By default genimage does not generate a hostname-mode directive in
NetworkManager.conf(5) causing it to have its default value.
This causes the following behavior :
- osimage without confignetwork -s : node hostname ends up being a non
fqdn name (ex: maestro-1000) : this is good
- osimage with confignetwork -s : node hostname ends up being the fqdn
name : (ex : maestro-1000.maestro.pasteur.fr) : this is to me not
recommended and anyway not consistent with the above case
This is because DHCP sends the non fqdn hostname and dracut/initrd sets
the transient hostname to the fqdn hostname and, according to the
semantic of the default value of NetworkManager(5) hostname-mode, the
original hostname (i.e. initrd/dracut fqdn one in this case) is restored
once the DHCP connection is deactivated, which is the case when the
xcat- static profile is created by confignetwork -s takes over.
This can be worked around by inserting into the image the
hostname-mode=none NetworkManager.conf(5) setting.
However I saw in configeth script code (which is called be
confignetwork) that the transient hostname is set using the hostname(1)
command (hostname $NODE)
I think it may be the problem as NetworkManager has no way to be aware
of it (as it uses systemd-hostnamed service as a proxy).
Wouldn't configeth rather use dbus-send or hostnamectl(1) --transient to
achieve the same ?
What do you think ?
Thanks for your help
--
Thomas HUMMEL
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