On 05.01.2015 10:41, Bob Goodwin wrote: > > On 01/05/15 01:43, Tim wrote: >> Allegedly, on or about 04 January 2015, Bob Goodwin sent: >>>> But I could have two crony/NTP servers no? In addition to box10 I >>>> could make box7 an ntp server and list both in the clients >>>> configuration file? >> Yes, that's actually a good idea. If you already have two PCs >> consulting the outside world for time, make them servers on your LAN, >> and let your clients use them. That lets your clients get time from >> either server, if one of them isn't available for some reason. >> >> A NTP client really should consult several NTP servers (some say at >> least four), and those servers should consult more than one server, too >> (unless they are*the* master server with an atomic clock, etc). Some >> math is done to work out the differences/delays between multiple >> servers, to work out which servers are closer up the chain to a master >> server, and your own clock's inaccuracies, and your client does its >> trick as it sees best based on that information. > > Crony/ntp appears to be giving the expected results this morning after > being left to do whatever it does overnight and rebooting the client > again. So I conclude that although I can do systemctl restart chrony > that doesn't initiate an update of the system time correction? Not > knowing how to do that makes it difficult to test ... > > [bobg@box10 ~]$ ssh -XC bobg@box48 > bobg@box48's password: > Warning: No xauth data; using fake authentication data for X11 forwarding. > Last login: Sun Jan 4 20:36:00 2015 from box10 > > "fake authentication" What's that about? > > [bobg@box48 ~]$ chronyc sources > 210 Number of sources = 1 > MS Name/IP address Stratum Poll Reach LastRx Last sample > =============================================================================== > ^* box10 2 6 377 42 -151us[-1713us] > +/- 321ms > > This is the result with only one server, I wanted to see one working > before I confused things with a second unknown. It's interesting to note > that although it is configured to use 192.168.1.10 it correctly > identifies the ntp server as box10 which I assume it gets from /etc/hosts? > > I found volumes written on ntp and chrony and the remarkable things it > can do but what I really need is some basic information, primarily how > to cause it to run a new time correction cycle so I can know if a > configuration change has done what I want it to do? > $ system-config-date -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
