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Questions tagged [ntp]

NTP stands for Network Time Protocol, and it is an Internet protocol used to synchronize the clocks of computers to some time reference.

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PDCe won't accept external time source

I noticed our PDCe is running 1:20min late and, of course, also the rest of devices in the network. I'm trying to sync with an external time source but it's not going well. It's a virtual Windows Server 2008 R2 over XenServer 6.0.0. The host is…
HEDMON
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Time sync on non-domain joined servers

I have a server which is in a workgroup in a separate network from the rest of the domain. As a result, it cannot use the domain controllers as a time source. The server is a Windows Server 2012 R2 machine. I'd like to ensure the server is…
dbr
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How to fix the date which is off by years

My server is in the future 2027: # sudo ntpdate ptbtime1.ptb.de 9 Jul 00:04:01 ntpdate[10000]: step time server 192.53.103.108 offset -353547847.989546 sec # date Di 21. Sep 23:48:18 CEST 2027 # hwclock Sa 09 Jul 2016 02:03:56 CEST -0.234935…
musbach
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Can i set a same NTP server twice by using IPv4 and then IPv6 address of the same server

can I set same NTP server twice i.e one by using IPv4 address and other by using Ipv6 address of the same NTP server? for example : lets suppose we have a NTP server named as XXX. Now this XXX server will have both IPv4 and IPv6 address.. right?...…
ajay
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How can I synchronize system time with a NTP server continuously?

Is there a linux service that can synchronize system time with a NTP server with a given interval, such as 1 minute, 1 hour or 1 day ? Is it a good practice to run utpdate in a cron tab? e.g. */10 * * * * /usr/sbin/ntpdate us.pool.ntp.org UPDATE In…
auntyellow
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How do I point clients to the NTP server?

I need to build an NTP server within my network on Windows Server 2012. This server must be dedicated only for NTP. I am using the W32tm service to configure my NTP to resynchronise its time from "Time.windows.com".. The configuration is perfect,…
Mr. Ali
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How to keep update Hardware clock when server is syncing time with NTP?

Is there any way to sync hardware clock periodically when server is syncing with NTP server? i am using Centos 6.7. Following is my ntp.conf file content # File for including partners custom ntp configurations leapfile…
Guru
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Is there a way to determine how often Chrony is querying NTP servers to sync time?

Is there any way to tell how often Chrony is querying NTP servers? If the answer is that it uses some algorithm based on how much the server has been out of sync in the past, is there some documentation on how that algorithm works? Is there a way…
Chris Williams
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How accurate can we get computer clocks synchronized in a local network of any number of computers?

In the past, I have seen that most of my computer on my local network don't really have the same time within up to 1 second or so. So I wanted to make sure that it would be possible for a stack of servers (say 48 1U computers) to all have the exact…
Alexis Wilke
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Nagios' check_ntp_time sporadic socket timeout

Check_ntp_time has been failing on all my hosts sporadically. I usually receive CRITICAL - Socket timeout after 10 seconds And a couple of minutes later check_ntp_time succeeds and shows the correct offset NTP OK: Offset 0.0001899003983 secs I've…
Charlie Wilson
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Using public ntp servers for backup to local stratum 1 server

In my data centers, I have access to a stratum 1 server but I set up our servers to use ntp pool servers in addition to it. My main thinking was for backup in case our local server goes down but I am concerned this is actually causing time to be off…
RishiD
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Synchronising clocks on a number of non-domain windows servers

We have a number of webservers, application servers and database servers that we want to keep in sync. Some of these servers are not connected to the Internet so accessing external time sources is not an option. So, what we'd like to do is configure…
Mike McClelland
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Why my server on Digital Ocean woke up with a wrong time?

Today one of my servers hosted on Digital Ocean (the only one hosted there) is reporting wrong time. It's two hours late. sudo dpkg-reconfigure tzdata # then I set up the timezone to Europe/Rome Current default time zone: 'Europe/Rome' Local time…
Nicola Ferraro
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Resync windows time after a long power outage

I'm facing the following situation: We have a computer with Windows 8 Standard Embedded. The machine is an industrial computer that doesn't have a CMOS Battery but a capacitor (a Gold Cap acting as a buffer to provide minimum 72h lifetime to the…
weilah
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NTP Version Check

How can I check other NTP server's NTP version without query the server? NTPv3 and NTPv4 network packet is different, and I know I can just catch the packet and analysis it when ntpd is doing sync. However, I think it is not elegant enough. Do you…
vxst
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