Install NTP package. This server is going to act as an NTP server for the nodes. The time on all components of OpenStack will have to be in sync. We can run NTP server on this and have other components sync to it.
sudo apt-get install -y ntp
Open the file /etc/ntp.conf and add the following lines to make sure that the time of the server is in sync with an external server and in case Internet connectivity is down, NTP server uses its own hardware clock as the fallback.
server ntp.ubuntu.com server 127.127.1.0 fudge 127.127.1.0 stratum 10
Restart NTP service to make the changes effective
sudo /etc/init.d/ntp restart
