[time-nuts] more of a time distribution question
jimlux at earthlink.net
Thu Mar 30 19:14:18 EDT 2017
On 3/30/17 1:11 PM, Majdi S. Abbas wrote:
> On Thu, Mar 30, 2017 at 09:37:50AM -0700, jimlux wrote:
>> Running NTP (in some flavor) would be the obvious approach, but I'm in an
>> environment where there's no "outside" connectivity.. Could I make one of
>> the beaglebones be the NTP server, and the others be the clients?
> Disciplining them all to a specific free-running host would
> require the use of the LOCAL reference clock:
> However, the LOCAL refclock is deprecated, and it is recommended
> that you use orphan mode instead, which is its intended replacement:
> Orphan mode is designed for your use case, and allows for more
> redundancy than making them all clients of a single host. I'd go that
That's exactly what I was looking for. Didn't think about googling for
"orphan" (and really, this is a group of orphans)
>> (I've seen some "add a GPS to a Rpi to make a NTP server" projects, and I
>> could probably leverage that)
> You could do that, but you don't really have to -- you can keep
> them synchronized at least to each other reasonably well this way.
>> I've also got a laptop (a mac, as it happens).. what's involved in making
>> *that* be a NTP server (e.g. the Mac might get its time from a NTP server at
>> some higher stratum, and then it propagates it down).
> OSX already runs ntpd; you should just need to tweak their
> default configuration.
Yes, I got that figured out, although I need to figure out some network
routing issues now (independent of NTP...), since it was bridging (via
NAT) my pack of beagles to the outside world... I was going "from mac TO
beagle" with ssh, but I've got a problem going "from beagle to mac,
instead of big world"
But that's straightfoward to solve.
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