| Re: [chrony-users] Multiple interfaces is possible? |
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On Wed, May 11, 2016 at 09:51:14AM +0000, Jahagirdar, Bhushan wrote:
> Question <1>
> Let me put the question in other way. chronyd accepts "n" number of samples before it actually updates the time. How can this "n" be configured? How does chronyd decides upon how many samples it needs to come to conclusion
> that the source data is authentic and system time should be set?
It needs 3 samples from the source. It's not configurable.
> My assumption is makestep is one of the configuration that can make chronyd jump to the expected time. I have used "makestep 1000 -1" in the configuration so that there should not be gradual change as system time could be set to epoch. But still chronyd takes in many samples (approx 35) to set the system time.
35 SOCK samples or source samples? The number of source samples is
in the chronyc sourcestats output. You may need to set a shorter poll
for the refclocks in order to get the first clock update sooner.
> Question <2>
> With the workaround I am able to feed data from multiple sources. Please consider below logs for my question below:
> 1970-01-01T00:00:04Z chronyd version DEVELOPMENT starting (+CMDMON +NTP +REFCLOCK +RTC +PRIVDROP -SCFILTER -SECHASH +ASYNCDNS +IPV6 -DEBUG)
> 1970-01-01T00:00:04Z commandkey directive is no longer supported
> 1970-01-01T00:00:04Z Could not open keyfile /etc/chrony/chrony.keys
> 1970-01-01T00:00:04Z Frequency 0.000 +/- 1000000.000 ppm read from /var/log/chrony/chrony.drift
> 1970-01-01T00:00:52Z Selected source SOC2
> 1970-01-01T00:00:52Z System clock wrong by 1609373625.736444 seconds, adjustment started
> 2020-12-31T00:14:38Z System clock was stepped by 1609373625.736444 seconds
> 2020-12-31T00:14:54Z Can't synchronise: no majority
Is it 2020 already? :)
> What does this mean? "Can't synchronise: no majority".
It means the two sources don't agree with each other. In "chronyc
sources" you should see by how much and with that you could set the
delay option of the refclocks to make them overlap.
--
Miroslav Lichvar
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