Re: [chrony-users] Chrony Client Support for different ports to the same server?

["Derek Atkins" <derek@xxxxxxxxx>]

Hi,
Thank you for the rapid response..

On Mon, January 27, 2025 10:21 am, Miroslav Lichvar wrote:
> On Mon, Jan 27, 2025 at 07:55:48AM -0500, Derek Atkins wrote:
>> I have a configuration of
>> server a.b.c.d
>> server a.b.c.d port 4123
[snip]
>
> Each IP address can be used only once as a source. The first one wins.
> In the system log you should see an error message about duplicated
> address, at least with more recent chrony versions.
>
> The sources are identified by IP address, not IP address+port. It's a
> design limitation which cannot be easily fixed without incompatible
> changes in the management protocol as exposed by chronyc.

I was afraid of that.  I did eventually find the comment in ntp_sources.c
and, when exploring that code, it looked like a port number was not always
available when looking up a slot.

>> Alternatively, is there some test I can run to see if a port gets a
>> valid
>> response?  Like "chronyd test a.b.c.d port 123" and use an exit-code to
>> determine if it got a response or not?
>
> chronyd -Q -t 1 "server $IP_ADDR port $PORT maxsamples 1"

Thanks for this.

I guess I'll have to change my auto-configuration process to use this.

Thanks!

>
> --
> Miroslav Lichvar

-derek
-- 
       Derek Atkins                 617-623-3745
       derek@xxxxxxxxx             www.ihtfp.com
       Computer and Internet Security Consultant


-- 
To unsubscribe email chrony-users-request@xxxxxxxxxxxxxxxxxxxx 
with "unsubscribe" in the subject.
For help email chrony-users-request@xxxxxxxxxxxxxxxxxxxx 
with "help" in the subject.
Trouble?  Email listmaster@xxxxxxxxxxxxxxxxxxxx.