CentOS Stream 9
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NTP : Configure NTP Client2022/01/07
 
Configure NTP Client.
[1] NTP Client configuration is mostly the same with the Server's one, however, NTP Clients do not need to receive time synchronization requests from other hosts, so it does not need to specify the line [allow ***].
[root@node01 ~]#
dnf -y install chrony
[root@node01 ~]#
vi /etc/chrony.conf
# line 3 : change to your own NTP server or others in your timezone

#
pool 2.centos.pool.ntp.org iburst
pool dlp.srv.world iburst
[root@node01 ~]#
systemctl enable --now chronyd
# verify status

[root@node01 ~]#
chronyc sources 

MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^* dlp.srv.world                 2   6     7     1   +101us[ -396us] +/-   10ms
[2] To Install NTPStat, it's possible to display time synchronization status.
[root@node01 ~]#
dnf -y install ntpstat
[root@node01 ~]#
ntpstat 

synchronised to NTP server (10.0.0.30) at stratum 3
   time correct to within 11 ms
   polling server every 64 s
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