To synchronize services across multiple machines, you must install NTP. The examples in this guide configure the controller node as the reference server and any additional nodes to set their time from the controller node.
Install the ntp package on each system
running OpenStack services:
# yum install ntp
Set up the NTP server
on your controller node so that it receives data by modifying
the ntp.conf file and restarting the
service:
# service ntpd start # chkconfig ntpd on
It is advised that you configure additional nodes
to synchronize their time from the controller node
rather than from outside of your LAN. To do so, install the ntp
daemon as above, then edit /etc/ntp.conf
and change the server directive to use the
controller node as internet time source.
