Parvin, Richard wrote:
I've noticed that a lot of people use iburst on thier server lines.
I'm wondering why.
iburst, when it works, can reduce the initial sync time from ~5 minutes
to a few seconds, at the cost of an initial burst of packets.
Terje
Richard
Richard C. Parvin
Team Leader, Architect Technology Consultant IV Internet Access
Engineering Hewlett-Packard
-----Original Message----- From:
[email protected]
[mailto:[email protected]] On
Behalf Of unruh Sent: Thursday, October 28, 2010 5:12 AM To:
[email protected] Subject: Re: systems won't synchronize no
matter what
On 2010-10-27, Florin Andrei<[email protected]> wrote:
On 10/27/2010 11:46 AM, Steve Kostecke wrote:
On 2010-10-27, Hal Murray wrote:
restrict default ignore
Your default restriction line is telling ntpd to ignore all
NTP packets. This includes your remote time servers. The only
NTP packets which are being allowed in/out are for 127.0.0.1
and 192.168.3.0/24. This is why these three systems won't
sync.
How hard would it be to add some code to check to see if the
IP Address from a server line will get rejected by the
restrict statements and log a warning message?
There is already a (better) solution in ntp-dev. Please see
http://bugs.ntp.org/show_bug.cgi?id=1568#c1
Yeah, anything along the general lines of the proposals above would
be great. Would have saved me a lot of trouble.
I cleaned up ntp.conf and now the NTP clients are syncing up when
using the conf file below. Thanks everyone.
The problem is really that people throw lines into their config file
which have no idea whatsoever what they do. (This is even true of
distribution maintainers). Why in the world were those restrict
lines ever there in the first place? Similaraly why are those local
servers there in the first place? (That one I blame the distro
maintainer's for since they are the ones tht have have the localclock
in there often). A distro's conf file should simply have three pool
servers listed and that is it, and most people would be happy).
############################################ server 10.10.16.65
iburst server 10.10.16.64 iburst
# excepting the servers from more drastic restrictions restrict
10.10.16.64 noquery restrict 10.10.16.65 noquery
# allow local queries restrict 127.0.0.0 mask 255.0.0.0
# now close the door restrict default ignore
driftfile /var/lib/ntp/drift
############################################
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--
- <Terje.Mathisen at tmsw.no>
"almost all programming can be viewed as an exercise in caching"
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