Configuring a private master NTP server
Control Center requires a common time source. The procedures in this appendix configure a private master NTP server to synchronize the system clocks of all hosts in a Control Center cluster.
A private master server is only required when a multi-host deployment does not have internet access and no time synchronization servers are available behind the firewall. Single-host deployments do not require time synchronization, and deployments with internet access can rely on the default public time servers that are configured in /etc/ntp.conf.