In order to synchronize the clock time between servers, you must have one reference server. In our example tlvntp1.tlv.lpnet.com
Then, all your server should refer to it . That's the way to do it:
My System Administrator did the following shortcut:
echo server tlvntp1.tlv.lpnet.com > /etc/ntp.conf
But be careful with it, since it may delete other synchronization option the file already has.
2) To be synchronized with our IT ntpserver (the one with the good clock time)
service ntpd restart
3) Then ntpq -p
to display what the offset with the synchronized server (the tlvntp1)
The offset should reduce after few minutes ....
This apparently means what is the offset between your current server and the referenced ntp server ( here, for ex, rstm02 and rstm18 etc ...)
michaelz@roor-wto128:~$ ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
+rstm02.lpdomain 64.236.96.53 2 u 162 1024 377 0.320 4.600 0.049
+rstm18.lpdomain 204.9.54.119 2 u 150 1024 377 0.337 5.579 0.063
*rstm09.lpdomain 64.236.96.53 2 u 173 1024 377 0.358 1.196 0.035
rstm07.lpdomain 172.16.22.71 2 u 551 1024 377 0.777 -42.128 3.369
rstm06.lpdomain 172.16.22.71 2 u 884 1024 377 2.675 -94.770 96.884
Same, but without host name resolving (-n option)
michaelz@roor-wto128:~$ ntpq -pn
remote refid st t when poll reach delay offset jitter
==============================================================================
+10.16.23.11 64.236.96.53 2 u 168 1024 377 0.320 4.600 0.049
+10.16.22.18 204.9.54.119 2 u 156 1024 377 0.337 5.579 0.063
*10.16.23.21 64.236.96.53 2 u 179 1024 377 0.358 1.196 0.035
10.16.22.61 172.16.22.71 2 u 557 1024 377 0.777 -42.128 3.369
10.16.22.71 172.16.22.71 2 u 890 1024 377 2.675 -94.770 96.884
4) Synchronize time between two servers
In order to synchronize the time between two different servers (no need to have an ntp server in between):
To synchronize your Windows with an external NTP server, do the following:
This apparently means what is the offset between your current server and the referenced ntp server ( here, for ex, rstm02 and rstm18 etc ...)
michaelz@roor-wto128:~$ ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
+rstm02.lpdomain 64.236.96.53 2 u 162 1024 377 0.320 4.600 0.049
+rstm18.lpdomain 204.9.54.119 2 u 150 1024 377 0.337 5.579 0.063
*rstm09.lpdomain 64.236.96.53 2 u 173 1024 377 0.358 1.196 0.035
rstm07.lpdomain 172.16.22.71 2 u 551 1024 377 0.777 -42.128 3.369
rstm06.lpdomain 172.16.22.71 2 u 884 1024 377 2.675 -94.770 96.884
Same, but without host name resolving (-n option)
michaelz@roor-wto128:~$ ntpq -pn
remote refid st t when poll reach delay offset jitter
==============================================================================
+10.16.23.11 64.236.96.53 2 u 168 1024 377 0.320 4.600 0.049
+10.16.22.18 204.9.54.119 2 u 156 1024 377 0.337 5.579 0.063
*10.16.23.21 64.236.96.53 2 u 179 1024 377 0.358 1.196 0.035
10.16.22.61 172.16.22.71 2 u 557 1024 377 0.777 -42.128 3.369
10.16.22.71 172.16.22.71 2 u 890 1024 377 2.675 -94.770 96.884
4) Synchronize time between two servers
In order to synchronize the time between two different servers (no need to have an ntp server in between):
ntpdate -u the-second-host-server
To synchronize your Windows with an external NTP server, do the following:
net time \\tlvdc1 /set /ywhere, tlvdc1 is the host name of yoru NTP server
