README for chrony 1.20
REQUIREMENTS
PRE-INSTALL
POST-INSTALL
Add up to eight time server of your country to /etc/chrony.conf.
A list of public servers can be found here:
http://www.eecis.udel.edu/~mills/ntp/clock1a.html
http://www.eecis.udel.edu/~mills/ntp/clock2a.html
PRECAUTION
Remove the both '/sbin/hwclock ...' entries from /etc/rc.shutdown
and /etc/rc. No other software should manipulate the system hardware
clock if chronyd is running.
Chrony is a pure Network time protocol (NTP) server, that mean it
provides it's services on port 123/UDP. Utilities like rdate uses
the time protocol on port 37/TCP. To use rdate with chrony you must
add the following line to the /etc/inetd.conf of your chrony server
and run inetd:
time stream tcp nowait root internal
To avoid this, I recommend the use of the NTP utility msntp to sync
your clients with your chrony server or better run chrony on all of
your clients.
The start script /etc/rc.d/chronyd has a online and a offline option.
Use this in your ip-up/ip-down scripts to tell chrony whether we are
online or offline.
