On 05/24/2015 11:41 AM, Kirk Bocek wrote: > to activate your selected daemon. I just used the new systemd commands, > thinking that would be enough. So I tried that and rebooted. Nope, same > problem: chronyd and ntpd both use UDP port 123, so each will terminate the other when it starts. If both are enabled, chronyd's unit file indicates that it should start after ntpd, so it will always "win." You probably have both enabled, so the system boots, starts ntpd, then starts chronyd which terminates ntpd. Disable chronyd.