Date: Thu, 11 Apr 2002 22:49:49 -0400 (EDT) From: wes chow <wes@woahnelly.net> To: Peter Leftwich <Hostmaster@Video2Video.Com> Cc: FreeBSD Questions <FreeBSD-Questions@FreeBSD.ORG> Subject: Re: grr, stupid springforwardfallback (timed) Message-ID: <20020411224909.B3095-100000@hitchcock.woahnelly.net> In-Reply-To: <20020411223520.L3095-100000@hitchcock.woahnelly.net>
next in thread | previous in thread | raw e-mail | index | archive | help
oh by the way, I believe that ntpd will not automatically sync up a clock that's way off. You need to run ntpdate once first to get it within a reasonable error before ntpd will fine tune it. Wes On Thu, 11 Apr 2002, wes chow wrote: > > I'm still not sure exactly what you want here... > > My understanding is that you want some program that runs constantly in the > background that will periodically sync you computer's clock up to an > accurate time source. Is this correct? If so, that's ntpd (the link I > gave below). > > To clarify: ntpdate sets the clock a single time (when the program is > run). You can use this a boot time to set the clock once. > > ntpd is a daemon process that gradually adjusts the clock and looks for > drift. It starts up at boot time, but runs constantly, thus adjusting the > clock constantly. You need to set xntpd_enable="YES" to start that up a > boot time. Alternatively, you can also do something like "ntpd -p > /var/run/ntpd.pid" to start it manually. > > There are a bunch of configuration options you need to set for ntpd (for > example, which time servers to sync to). That file is /etc/ntp.conf. > Read the link I gave you earlier for information about that. > > Does that help? > > > And about the GMT offset... I only have a vague understanding of this. I > believe the time zone information is kept in the kernel and set at boot > time by adjkerntz. You can change it by using tzsetup. The current > timezone information is kept in /etc/localtime. Check the man pages for > tzsetup and adjkerntz for more info. > > > > Wes > > > > On Thu, 11 Apr 2002, Peter Leftwich wrote: > > > On Wed, 10 Apr 2002, wes chow wrote: > > > Is this what you mean? > > > http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/ntp.html > > > Wes > > > > Sort of but really not really :( ... There is nothing in my /etc/rc.conf > > nor in my /boot/loader.conf that clearly is *the* one time daemon to run, > > that promises to keep accurate time from the Navy's heartbeat and maintain > > GMT offset and daylight savings information: > > > > # grep ntpd /etc/rc.conf > > ntpdate_enable="YES" # Run ntpdate to sync time on boot (or NO). > > ntpdate_program="ntpdate" # path to ntpdate, if you want a different one. > > ntpdate_flags="-v" # Flags to ntpdate (if enabled). > > xntpd_enable="NO" # Run ntpd Network Time Protocol (or NO). > > xntpd_program="ntpd" # path to ntpd, if you want a different one. > > xntpd_flags="-p /var/run/ntpd.pid" # Flags to ntpd (if enabled). > > > > Should I change the line 'ntpdate_program="ntpdate"' to ="ntpd" instead? > > > > PS. Where *is* GMT offset information for the box stored anyway?? > > > > -- > > Peter Leftwich > > President & Founder > > Video2Video Services > > Box 13692, La Jolla, CA, 92039 USA > > +1-413-403-9555 > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-questions" in the body of the message > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020411224909.B3095-100000>