[Cialug] NTPD -- OpenSUSE 10.1

[Matt Patterson]

It is working the way that it is supposed to I guess so it is what it is. 
I may tweak the config file a bit for a faster response.

Thanks for the help!

-Matt


On Thu, 22 Mar 2007, Josh More wrote:

> NTP will not serve unless the daemon knows that it's own time is
> properly synchronized.
> It can take up to half an hour for the daemon to gather enough data to
> know this.
>
> You can minimize the startup time by making the initial call use more
> packets.  This is controlled with the "iburst" parameter.
>
> Note that if you do this, there is a slight chance that that you will
> sync to an out of sync server and be serving the wrong time to the rest
> of your network.  Most people just wait the 30 mins and let it be.
>
>
>
>
> -Josh More, RHCE, CISSP, NCLP
> morej at alliancetechnologies.net
> 515-245-7701
>
>
>>>> Matt Patterson <matt at usrlocal.com> 03/22/07 11:32 AM >>>
> Ok, this one is rather interesting.  So I installed the xntp package
> which
> installs ntpd.  I editted the ntp.conf file in /etc/ to use one server
> as
> a main ntp source that is across the network and setup a peer on the
> local
> subnet.  So everything looks good in the config and I can start ntp and
>
> get time for a bit.
>
> After say 10 seconds or so, suddenly ntp decides it can no longer serve
> up
> time.  It's running, just not sending out what I need.
>
> Doing an strace I get the following.....
>
> select(9, [4 5 6 7 8], NULL, NULL, {0, 0}) = 1 (in [8], left {0, 0})
>
> recvfrom(8,
> "\343\0\4\372\0\1\0\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\311\255&\241WV\206\36",
>
> 1092, 0, {sa_family=AF_INET, sin_port=htons(23691),
> sin_addr=inet_addr("216.243.198.244")}, [16]) = 48
>
> select(9, [8], NULL, NULL, {0, 0})      = 0 (Timeout)
>
>  sendto(8,
> "$\0\4\354\0\0\0\0\0\0\0ZINIT\311\255&U\347\22\261\263\311\255&\241WV\206\36\311\255&\241WG\330\5\311\255&\241Wp\233s",
>
> 48, 0, {sa_family=AF_INET, sin_port=htons(23691),
> sin_addr=inet_addr("216.243.198.244")}, 16) = 48
>
> select(9, [4 5 6 7 8], NULL, NULL, NULL) = ? ERESTARTNOHAND (To be
> restarted) ---  SIGALRM (Alarm clock) @ 0 (0) ---
> rt_sigreturn(0xe)                       = - 1 EINTR (Interrupted system
>
> call)
>
>
>
> This continues for roughly 20 minutes and magically, ntp starts
> serving up time again.   Whiskey Tango Foxtrot!  Anyone have a clue on
>
> why this is happening?
>
> - Matt
>
>
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