[CentOS] chronyd configuration as a local ntp server

Fri Dec 30 04:22:25 UTC 2016
Phil Amy <phil.amy at gmail.com>

If your NTP server will be on 7/24, I would uninstall chrony and install
ntpd which is still included in CentOS 7.  Configure as usual.

For the differences between chrony and ntpd reference:

Essentially, chrony is more for laptops with intermittant network
connections, and ntpd is better suited to always-on servers