[lug] NTP question

[Sean Reifschneider]

On Mon, Mar 17, 2003 at 07:07:16PM -0700, Neal McBurnett wrote:
>The NTP daemon is for *tracking* good time, and will only sync if you
>are close - a protection to avoid causing cron problems and other
>weird things if your machine or your ntp peers are really fouled up
>due to time-zone problems, etc.

Yeah, but I think an hour is too small a window...  The default is an
hour...  The problem is that you run into problems around DST changes if
the clock hasn't been written to the hardware clock recently.

I up my machines to 3 hours using "tinker panic 10000" in the ntpd.conf
file.

Another thing that I do is to pull the time regularly from the
ntp[12].tummy.com boxes, setting a maxpoll of 12 there, then list other
NTP servers with a maxpoll of 17.  Keeps the machines "honest" even if
somehow the tummy.com servers get wedged, but they back off pretty
quickly to only getting polled once every day or two.

People are welcome to use ntp1.tummy.com and ntp2.tummy.com, of
course...

Sean
-- 
 George Washington was first in war, first in peace -- and first to
 have his birthday juggled to make a long weekend.
Sean Reifschneider, Inimitably Superfluous <jafo at tummy.com>
tummy.com, ltd. - Linux Consulting since 1995.  Qmail, Python, SysAdmin