The Network Time Protocol, or NTP, can be used to synchronize the time on a server with an authoritative source. Windows Servers, for example, will use one of the network domain controllers (the DC which holds the PDC emulator FSMO role for the domain [thanks Graeme]) to get time information. You can configure the domain … Read more
To configure a client computer or a member server to sync time from the domain, run the following command: w32tm /config /syncfromflags:domhier /update And then stop and restart the time service by running: net stop w32time && net start w32time This should be all you need to do.
Honestly, you shouldn’t have problems with NTP in a virtual environment and modern operating systems… It’s worth finding the root cause of that problem. If you can, make sure you have a good NTP infrastructure (I usually use an external NTP source or point everything to a core switch or router) and that you have … Read more
ntpdate (and ntpd) will refuse to (easily) set the time if the offset is too high. Both applications will try to slowly adjust your time, so as to not to confuse your system or any applications that may not handle big time jumps very well. Try ntpdate -b instead. It will set the time no … Read more
Since the old accepted answer got deleted (It was a link to a Google code search results that no longer exist), I figured I could answer this question for future reference : public static DateTime GetNetworkTime() { //default Windows time server const string ntpServer = “time.windows.com”; // NTP message size – 16 bytes of the … Read more
If you are on OSX running boot2docker, see this issue: https://github.com/boot2docker/boot2docker/issues/290 Time synch becomes an issue because the boot2docker host has its time drift while your OS is asleep. Time synch with your docker container cannot be resolved by running your container with -v /etc/localtime:/etc/localtime:ro Instead, for now, you have to periodically run this on … Read more
The source for this answer is the comment to the answer at: Will docker container auto sync time with the host machine? After looking at the answer, I realized that there is no way a clock drift will occur on the docker container. Docker uses the same clock as the host and the docker cannot … Read more
You only need to set the time zone once: tzselect or dpkg-reconfigure tzdata NTP does not handle time zones. All time data handled by NTP is in UTC; your local time zone setting determines the offset from there.
The pool.ntp.org is a DNS-level load balancer. Jeff just happened to get directed to that one, the NTP pool maintainers do not care what does the server run on it’s port 80 (http), only that it serves time via NTP correctly.
Your situation is unusual, and I’d be surprised if anyone comes up with a standard ntpd-based configuration to do what you want. That said, I like being surprised, and it happens quite often around these parts. But until someone comes up with a better idea, have you considered a crontab entry like this? */5 * … Read more