[CoreOS] How to modify hostname in FCOS

[Thomas Schneider]

Hi,
I have successfully installed FCOS in KVM from ISO.
The command sudo coreos-installer install /dev/sda --ignition fcos.ign
finished w/o errors.

After rebooting the VM I can see many messages in CLI indicating a problem:


At first I would like to change the hostname.
Can you please advise how to proceed?

And what is causing the messages in CLI?

THX