Yes the bug report is inevitable, maybe even 2 (NetworkManager is under suspicion too).
I do control the DHCP and the DNS servers in my network and I did manage to make the DHCP stop proposing 'domain-search' and yet NetworkManager (after OKD update and my interventions with /etc/resolv.conf systemd-resolved is no longer a factor) is still assigning a search stanza in the /etc/resolv.conf on the hosts.
On the otherside , the CoreDNS (the stupid thing that appends the search stanza from /etc/resolv.conf) is not under my control but I can check.
Manual is possible but not elegant and most importantly less used (or I thought so until now).
What bothers me most is the fact that the issue seems since OpenShift3 (I found a solution that gave me a clue about the search in /etc/resolv.conf) and I doubt it will be fixed soon.
Best Regards,
Strahil Nikolov
On Sun, Jan 28, 2024 at 10:02, Tim via users<users@xxxxxxxxxxxxxxxxxxxxxxx> wrote:On Sun, 2024-01-28 at 07:31 +0000, Strahil Nikolov via users wrote:
> That's true but right now I have no control over OpenShift/OKD
> behavior.
Bug report... If it's a software fault, they may fix it. If it's not,
they may point out where a configuration problem is.
> I even managed to make my DNS stop sending 'domain-search' (clearly
> visible in the NM connection) but NM still applies the domain as
> such.
>
> On top of that I can't find dhcp-client in the repo ,which could be a
> possible solution to replace NM built-in DHCP client.
Do you have to use DHCP? Can you manually configure the network
parameters? You should be able to partially manually configure a
connection and let DHCP automatically do the rest. But you could fully
manually set things.
I wonder if you're running afoul of the systemd-resolved service?
Is the DHCP server under your control? You can specify what it sends
as the domain search parameters (which should end in a dot, as Jeffrey
has already said).
If you always get assigned the same IP, you could put entries in the
hosts file for its addresses, and that'd stop it searching further for
answers.
DNS shenanigans is why I run my own DNS server. Firstly, I started
doing so because my ISP's server was utter crap (overloaded and slow,
and often didn't return results, even for its own services). Then
because I started running a LAN where I needed local name resolution,
the LAN became too big and unwieldy for messing with the hosts file,
and you can only do that on computers.
--
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I will only get to see the messages that are posted to the mailing list.
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