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.
# apt-get install ntp
On additional nodes, it is advised that you configure the
other 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.
