NTP Settings for CentOS
From KlavoWiki
By default chrony operates only as an NTP client. To change to operate as a server and allow clients to obtain NTP information you need to allow connections. Set an allow with the appropriate network address.
vi /etc/chrony.con
Custom settings.
pool au.pool.ntp.org iburst
To operate as a server and allow client connections.
allow 192.168.0.0/16
systemctl restart chrony systemctl status chrony