|Re: [chrony-users] Isolated time domains|
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On 03/12/2013 01:16, Bill Unruh wrote:
On Tue, 3 Dec 2013, Tomalak Geret'kal wrote:
On 03/12/2013 00:58, Bill Unruh wrote:
> > In my test setup I have the master server's clock
set back about 3 hours > and Chrony appears to be
working great and is moving time towards what > is
reported by the external NTP servers:
Why? Is this a rediculous test? Why would you expect
the master server to
I typically find testing the potentially unexpected to be
a fairly worthwhile use of my time, certainly in critical
So, if for some reason your master were suddenly out by 3
hours, you would
want all of the clients to also be out by 3 hours, and to
play catchup with
the master (the clients would all lag, depending on their
poll intervals and
times because the master is racing along with a huge
(>>500PPM) drift rate
trying to fix its own offset. Your scenario would have the
clients far more
scattered in time than if they were all discplined to UTC
What error scenario do youhave in mind where the master
could suddenly find
itself out by 3 hours?
You know, it's the unforeseen circumstances I like to
prepare for. It's all well and good having some little list
of scenarios that you know you can handle, but I prefer to
have as robust a solution as I can, so that when the
unexpected happens I have the greatest chance of recovery.
YMMV I suppose...
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