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How do I synchronize clock of two servers

i got 2 AIX Servers with OS time differing by 1.5 min. I want to Sync both Server OS times. Please let me get Solution on This.

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Kent Olsen

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PMGreensted

ntpdate sets the date and time using the Network Time Protocol (NTP)

Example:
/usr/sbin/ntpdate 128.9.176.30

NTP server list - http://support.ntp.org/bin/view/Servers/StratumOneTimeServers

omarfarid

Hi,

Both servers should point to ntp server to synchronize time. If you are just worried about having the same time on both servers regardless of it being accurate (sync to global time), then one server can sync time from the other server.

Please see the link below to setup ntp:

http://unix.ittoolbox.com/groups/technical-functional/ibm-aix-l/ntp-network-time-protocol-set-up-on-aix-52-944293

PMGreensted

I tried this on my AIX server today.

/usr/sbin/ntpdate -b 192.5.41.209
10 Oct 07:30:44 ntpdate[499902]: step time server 192.5.41.209 offset 0.194082

You could add this to your crontab file to update every 30 minutes.

30 * * * * /usr/sbin/ntpdate -b 192.5.41.209 > /dev/null

Hanno P.S.

if you want to quickly synchronize clocks between systems, you can simply use
# rdate <remote-sys>
to set your system's clock to the time of remote-sys. See rdate(1) man page.

alisher23

ASKER

I got it. Thanks for all of you.