syncing FreeBSD server with NTP is simpler than you may think

After setting up a config file for the NTP on every server, i figured out that a stock settings just work.

so adding:

ntpd_enable="YES"
ntpdate_enable="YES"

to the /etc/rc.conf just does the trick (and starting services if not rebooting the server).

After some moments of running the ntp client you can check it with:

# ntpq -c peers
    remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*ntp2.Housing.Be 128.32.206.55    2 u   16   64  377  189.371  -14.785   5.513
mighty.poclabs. 169.229.70.64    3 u   28   64  377  132.913  -14.411   5.034
+vps1.cobryce.co 64.235.98.66     3 u   16   64  377  180.600  -22.410   5.258

where servers marked with * are the selected server and + are the candidates for ntp sync.