On Mon, 25 Feb 2013, Ask Bjørn Hansen wrote:
Date: Mon, 25 Feb 2013 07:01:25 +0100
From: Ask Bjørn Hansen <[email protected]>
To: Hal Murray <[email protected]>
Cc: [email protected]
Subject: Re: [Pool] Is there a way to tell if an IP Address is still in the
pool?
Sender: [email protected]
On Sunday, February 24, 2013 at 17:30, Hal Murray wrote:
I think clients using the pool should occasionally check to see if an address
they picked is still in the pool and pick another one if it has dropped out
of the pool. (or at least stop using the old one)
Yes, that would be very nice.
I think the simplest and for the pool most effective strategy would be if
ntpd just replaces the "oldest" server every 7-10 days. With 4 servers that
will mean they all rotate every 4-6 weeks which seems reasonable in terms of
instability caused and would be a huge improvement over the current state.
This would be in addition to replacing "bad" servers already.
Hi,
Isn't the 'oldest' server also likely to be "the best" ?
Then it would be bad to rotate it out, as Ask noted.
Maybe ntpd should, for each pool association, keep a timestamp
"last seen in dns", and make decisions based on that ; like
"maybe drop if not seen for 3 months".
A server leaving the pool is relatively rare ; the rotation scheme
should not be sub-optimal, just to accomodate such events.
For now, and for a long time to come, pool server operators must
expect traffic long (years) after a pool server leaves the pool.
It would be nice to get that fixed but not with something that
is not optimal.
Ask Bjørn Hansen - http://askask.com/
Regards,
Henk Penning
------------------------------------------------------------ _
Henk P. Penning, ICT-beta R Uithof WISK-412 _/ \_
Faculty of Science, Utrecht University T +31 30 253 4106 / \_/ \
Budapestlaan 6, 3584CD Utrecht, NL F +31 30 253 4553 \_/ \_/
http://www.staff.science.uu.nl/~penni101/ M [email protected] \_/
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