Title: chrony.tcz Description: chrony - programs for keeping computer clocks accurate Version: 1.26 Author: Richard Curnow (original version) Original-site: http://chrony.tuxfamily.org/ Copying-policy: GNU General Public License Version 2 Size: 96K Extension_by: vitex Tags: chrony programs keeping computer clocks accurate Comments: From http://chrony.tuxfamily.org/: Chrony is a pair of programs which are used to maintain the accuracy of the system clock on a computer. The two programs are called chronyd and chronyc. Chronyd is a daemon which runs in background on the system. It obtains measurements via the network of the system clock's offset relative to time servers on other systems and adjusts the system time accordingly. For isolated systems, the user can periodically enter the correct time by hand (using Chronyc). In either case, Chronyd determines the rate at which the computer gains or loses time, and compensates for this. Chronyd implements the NTP protocol and can act as either a client or a server. Chronyc provides a user interface to Chronyd for monitoring its performance and configuring various settings. It can do so while running on the same computer as the Chronyd instance it is controlling or a different computer. ----------------------------------------------------- This extension was built from http://download.tuxfamily.org/chrony/chrony-1.26.tar.gz The chrony manual is http://chrony.tuxfamily.org/manual.html The chrony configuration file for this extension is /usr/local/etc/chrony/chrony.conf It should work without modification for any system that has good network connectivity when the system starts. Execute sudo /usr/local/etc/init.d/chrony restart to restart chrony if the network goes down or if chrony does not seem to be synchronizing the clock. The default configuration does not save any system state on disk. Chrony will generally synchronize the system clock within a few minutes. The default configuration synchronizes with four servers from the pool provided by pool.ntp.org; see http://www.pool.ntp.org for suggestions about selecting more appropriate servers. The default configuration tests the accuracy of the system clock whenever chrony starts execution. If the clock is in error by more than 30 seconds, the clock is set immediately to the correct time. Otherwise, the clock is slewed (adjusted) incrementally in such a manner that time never jumps backward. Execute echo -e 'tracking\n sources -v' | chronyc to get an overview of the state of chronyd. Critical chronyc commands are protected by a password that is stored in /usr/local/etc/chrony/chrony.keys The default password is "mc". For example, execute echo -e 'password mc\n burst 5/10' | chronyc to cause chronyd to attempt to get 5 good responses quickly for each ntp server but to send no more than 10 requests to each server. This command can speed up synchronization. ----------------------------------------------------- Change-log: ---------- 2010/01/03 First version 2010/04/03 Upgraded to 1.24 and added chrony-doc.tcz 2011/12/14 Upgraded to 1.26 Current: 2011/12/17 Added libcap.tcz dependency