NTP/ Rdate

[Incognito]

hi i have NTPD installed and rdate... and my server time seems to drift.. aboiut 20-50sec ahead.. and my ircd gets notices about it...

i was wondering if someone can help me set ntp/rdate properly so i dont get these problems please

thanks

 

[floyd]

I run a cronjob

0 * * * * /usr/sbin/ntpdate tick.usno.navy.mil

 

[Incognito]

mm i want something thats with ntp or rdate if possable

 

[floyd]

The cronjob runs ntp

 

[Incognito]

ok how do i add it?

 

[floyd]

From console AKA ssh

echo "0 * * * * /usr/sbin/ntpdate tick.usno.navy.mil" >> /var/spool/cron/root

This will sync the time every hour.

 

[Incognito]

ok cheers mate

 

[Incognito]

can i use echo "0 * * * * /usr/sbin/ntpdate pool.ntp.org" >> /var/spool/cron/root ?

 

[floyd]

Sure as long as its a valid ntp server

 

[Incognito]

ok how do i remove echo "0 * * * * /usr/sbin/ntpdate tick.usno.navy.mil" >> /var/spool/cron/root as i added it by mistake instead of other one

 

[Incognito]

never mind removed it out of crontab

 

[floyd]

You can use a text editor such as nano to edit the file. Some like vi but I find it non intuitive.

 

[Incognito]

ok thanks what do i put it as if i want it to update/check every 1 min

 

[floyd]

All asterisks

* * * * *

 

[Incognito]

hmm vps is still 20-30sec ahead if i reboot it

 

[nobaloney]

Have you tried restarting the crond daemon (not sure if you need to; I haven't read man crond yet today ?

Also using a vps you should check with your provider; you may not be able to correct time back to the system hardware.

Jeff

 

[Incognito]

ive had ntp working on it fine before.

 

[agraj1]

Hello,
Acording to me,
rdate is a Linux command and the network time protocol for immediate date and time setup from another machine. rdate is the older standard that in many cases is now replaced by ntp/ntpd. Unlike ntp, rdate sets the new time instantly and is more suitable in situations like initial setup. Under Linux, rdate does not have its own network service and is supported by the standard time service instead. The Network Time Protocol (NTP) is a protocol for synchronizing the clocks of computer systems over packet-switched, variable-latency data networks. NTP is one of the oldest Internet protocols still in use.
thankyou

 

[floyd]

Unlike ntp, rdate sets the new time instantly

The time is set instantly using ntp.

 

[ranz]

@Incognito:

Did you manage to sort it out?

If not ... I'd recommend looking at this article:

http://support.ntp.org/bin/view/Support/TroubleshootingNTP