On 1/20/22 20:10, Thomas Cameron wrote:
I made a quick video of the difference between F35 and RHEL 8.5.
https://youtu.be/KuvqInOg1u8
Skip to about the 1:30 mark to see the difference between F35 and RHEL
8.5. I've seen the hostname assigned by reverse DNS with every version
of RHEL since at least RHEL 4. In fact, I don't recall it working
otherwise ever.
I just tested to make sure. Every version of RHEL from 4 through 9 beta
has worked as I expected - the hostname is set based on the reverse DNS
for the IP address assigned to the instance, so hostxxx.tc.camerontech.com.
https://youtu.be/pAVNwwrHwkw
I tested a couple of older versions of Fedora and found that older
versions like F28 work like I expect (hostxxx.tc.camerontech.com), but
33 sets the hostname to localhost.localdomain, and 34 and 35 set the
hostname to just "fedora" with no domain or extension.
I looked at the man page for NetworkManager.conf and it looks like
hostname-mode in the [main] section *should* do what I want:
default: NetworkManager will update the hostname with the one
provided via DHCP or reverse DNS lookup of the IP address on the
connection with the default route or on any connection with the
property hostname.only-from-default set to 'false'. Connections are
considered in order of increasing value of the hostname.priority
property. In case multiple connections have the same priority,
connections activated earlier are considered first. If no hostname
can be determined in such way, the hostname will be updated to the
last one set outside NetworkManager or to 'localhost.localdomain'.
But I've tried and it doesn't seem to make any difference.
Thomas
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