Question: Make node1 server as NTP server to utility.server9.example.com (172.24.9.40)

Solution:

vim /etc/chrony.conf

allow 172.24.9.0/24

systemctl daemon-reload

# then restart the chronyd

systemctl restart chronyd

# Finally add ntp service to firewall

firewall-cmd --add-service=ntp --permanent

firewall-cmd --add-service=ntp

firewall-cmd --reload


# Reference:: https://linuxconfig.org/redhat-8-configure-ntp-server
