Try sudo chronyc -a makestep This will update your system clock quickly (might break some running applications), using the time sources defined in /etc/chronyd.conf. -a is needed to avoid 501 Not authorised error
Try sudo chronyc -a makestep This will update your system clock quickly (might break some running applications), using the time sources defined in /etc/chronyd.conf. -a is needed to avoid 501 Not authorised error
(This isn’t Marzullo’s algorithm. That’s only used by the high-stratum servers to get really accurate time using several sources. This is how an ordinary client gets the time, using only one server) First of all, NTP timestamps are stored as seconds since January 1, 1900. 32 bits for the number of seconds, and 32 bits … Read more
Instead of calling DateTime.Now.ToUniversalTime() you can call DateTime.UtcNow Same thing but shorter 🙂 Documentation here.
I know about Android ICS that it uses a custom service called: NetworkTimeUpdateService. This service also implements a NTP time synchronization via the NtpTrustedTime singleton. In NtpTrustedTime the default NTP server is requested from the Android system string source: final Resources res = context.getResources(); final String defaultServer = res.getString( com.android.internal.R.string.config_ntpServer); If the automatic time sync … Read more
Unless extremely accurate timekeeping is mission-critical for you there should be no discernible effect for your users, aside from their clocks changing by 2 minutes. The possible exception is if they declare your NTP server to be “insane” as a result of the large change (which would require you to restart the NTP service on … Read more
The iburst option does several checks quickly as soon as the daemon is started and whenever the server is unreachable if you have that in your configuration. The burst option does several checks quickly whenever the server is reachable. By default ntpd then follows an exponential backoff where the time between checks progressively increases, starting … Read more
You can specify an NTP server via DHCP, or Group Policy, or DNS SRV records. DHCP: GPO: SRV Record: If your client is unable to leverage any of those mechanisms… you can also pretty safely assume that all Active Directory domain controllers are also NTP servers. Which means that you should be able to find … Read more
This is 2018. Windows is capable of keeping servers synchronized within 2 ms or so, as required by MIFID II Regulations. So, your problem is a non-problem. Our sysadmins using windows NTP to sync time with domain controller. Synchronization of VMs with ESXI host is off. Why? The host can handle this a lot better … Read more
The best practice is to run your own pool of NTP servers set to sync from public NTP servers. In the event that your organization was to lose internet access, you would not want your clocks to become skewed. Further, it is rude to set thousands of hosts to public servers when you could (and … Read more