You could just turn off ntpd and run ntpdate time_server from cron serveral times a day. I never really liked this, because you never really know what effect this might have on database data if you move time "backwards".
Tis a common thing to do in the HPUX world. ------------------ Marvin Blackburn Systems Administrator Glen Raven "He's no failure. He's not dead yet" --William Lloyd George > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Rodolfo J. Paiz > Sent: Friday, September 19, 2003 2:33 PM > To: [EMAIL PROTECTED] > Subject: RE: setting up NTPd > > > At 11:09 9/19/2003 -0700, you wrote: > >I do have one question, though. You mentioned the time sync > will occur after > >a reboot. I need the synchronization to occur several time a > day without > >ever rebooting. How can I achieve this? > > The ntpd service will immediately synchronize with the > servers listed in > /etc/ntp/step-tickers when the SERVICE is restarted; this > does not mean > rebooting the box but rather issuing the "service ntpd > restart" command. > This is only so that the time is properly synchronized right > from the start. > > From then on, the ntpd service follows a complicated algorithm of > scheduling queries to ensure that your clock is always in > sync. Do not > worry about it... the clock WILL NOT be synchronized once a > day. It will be > sync'ed probably once a minute for 10 minutes, then once > every five minutes > for 4 hours, then once every 15 minutes for 10 hours, and so > on. (Not real > numbers, just an example.) > > While this is going on, ntpd will change the value of > /etc/ntp/drift, which > is an internal correction factor for whatever error is in > your hardware > clock. With this correction, the ntpd service can use the > hardware clock to > keep accurate time for longer periods between > synchronizations without > losing accuracy. The result: low network traffic and very > accurate time all > the time. > > Just place one or more valid servers in step-tickers, > configure ntp.conf, > restart ntpd and quit worrying. You can later check that > things are OK with > "ntptrace localhost". > > > -- > Rodolfo J. Paiz > [EMAIL PROTECTED] > > > -- > redhat-list mailing list > unsubscribe mailto:[EMAIL PROTECTED] > https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/redhat-list
