syn. system time

[peterchu]

I want to syn. the system time on all hosts , I use rdate -s to get update the local system time on linux system, could suggest how to do it at UNIX system ? thx.

[Sunil Sharma_1 · Accepted solution]

Hi,

Best way to configure ntp on your network.

Configure one server as time server or NTP server and other should be NTP client.

Sunil

[Sanjay Kumar Suri]

As Sharma suggested NTP is the best suited for HP-UX systems in networking environment to synchronize time.

HP-UX uses a network time service bundled with the OS called Network Time Protocol (NTP) and is used to synchronize system times in the network. The xntpd daemon is used to implement this feature. NTP is configurable through the command line or through SAM.

sks

[Victor Fridyev]

Hi,

In order to synchronize HPUX machine with another one, use the following command :
/usr/sbin/ntpdate -b hostname.
If you need constant synchronization, edit the the following files: /etc/ntp.conf (according to the explanations in it) and and /etc/rc.config.d/netdaemons and update the following:
export NTPDATE_SERVER=hostname
export XNTPD=1

Run
/sbin/init.d/xntpd stop
/sbin/init.d/xntpd start

BTW, all this stuff can be done from SAM

[peterchu]

thx replies, I have a unix server , how to get the system time from a linux server ( just like the rdate command on the linux ) ? thx much.

[Elmar P. Kolkman]

Linux has xntp as well... I would suggest running it on those as well, with one or two as 'timeservers' and the rest trying to sync to it.

Also, I would recommend NOT to use ntpdate, or use the capital B option, to make sure the time is synced but does not make timejumps. Software sometimes doesn't like timejumps, especially timejumps back in time. By using '-B', the clock is synced by adjusting the speed at which the system clock runs. You could put a ntp server name in /etc/rc.config.d, but mind that the clock is then adjusted with a jump every time you start the ntp daemon by using the script in /sbin/init.d !