On 1/16/22 15:00, Peter Boy wrote:
Do you want to set the hostname at every boot?
Usually you set the static hostname once using "hostnamectl set-hostname <FQDN>“. „fedora“ is the transient hostname. DHCP client uses the static hostname to request an IP.
But maybe I didn't get what exactly you want to do.
I have DNS set up such that every host that gets a dynamic address gets the hostname hostXXX.tc.camerontech.com, like this:
172.31.100.100 host100.tc.camerontech.com 172.31.100.101 host101.tc.camerontech.com 172.31.100.102 host102.tc.camerontech.com 172.31.100.103 host103.tc.camerontech.com
and so on. For RHEL 6, 7, 8, and 9 beta, along with the last MANY versions of Fedora, when a new virtual machine boots up using KVM virtualization, the system hostname is set to whatever the reverse IP address of the instance. So if the VM gets 172.31.100.150, the hostname is set to host150.tc.camerontech.com. It's worked this way for years and years.
All of a sudden with F35, no matter what the address of the VM is, its hostname is set to fedora. Just fedora. Not fedora.tc.camerontech.com.
I want F35 to have the same behavior as previous versions of Fedora and RHEL and Ubuntu and so on. I don't want to manually set /etc/hostname and monkey with hostnamectl because if the VM gets a new address, I don't want to have to go and change /etc/hostname or anything.
I've been poking around with /etc/NetworkManager/NetworkManager.conf - it seems like I should be able to set :
[main]
#plugins=keyfile,ifcfg-rh hostname-mode=default
but that doesn't work. When I first ssh into the VM, the hostname is set to "fedora" again. If I restart NetworkManager.service, THEN the hostname is changed to whatever the reverse DNS name is.
I have a few setup scripts which really need an accurate hostname value set, so this is really frustrating.
Make sense?
Thomas