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- To: chrony-users@xxxxxxxxxxxxxxxxxxxx
- Subject: Re: [chrony-users] Isolated Network Configuration
- From: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
- Date: Wed, 22 Jan 2025 09:43:44 +0100
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On Tue, Jan 21, 2025 at 04:28:00PM -0500, William Bergen wrote:
> I’ve been spending quite a bit of time trying to configure the system to
> meet my needs but I can’t seem to satisfy every scenario simultaneously. I
> know this is complicated by the fact that there are only 2 servers in the
> network. I’ve tried to compile my requirements into a table of scenarios
> and desired outcomes.
> [image: scenarios.png]
In SC06 there is "GPS A & B disagree" and "GPS B is inactive". How can
they disagree when only one is working?
> So far, my biggest trouble has been meeting SC04 AND SC06 with the same
> configuration. This is where I’m at right now with the relevant sections of
> the configuration:
> Server A
>
> rtcsyncallow 192.168.5
> local stratum 10 orphan
> makestep 1 -1
> refclock SHM 0 refid GPS delay 0.2 trust
> server 192.168.5.1
Is the server trying to poll itself? What is that supposed to do?
Which scenarios break when you don't use any of the trust options?
> This config setup is the closest I have gotten to achieving my desired
> outcomes. I thought that the orphan option for the local refclock was
> correct in this scenario but I keep receiving an error when testing
> SC05: Unknown
> local refid in orphan mode.
That indicates chronyd doesn't know the local IP address for the orhan
source. Is it running on normal Linux? Can you check strace if
received messages have the IP_PKTINFO cmsg?
--
Miroslav Lichvar
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