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Questions tagged [time-synchronization]

257 questions
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System time is off by up to hundreds of milliseconds despite NTP sync before boot

I'm running a couple of servers which need a pretty tight time sync (<50ms) as they are running a Paxos algorithm. The servers are running NTP and are successfully sync at one point. According to hwclock the 11-minute mechanism is enabled, so the…
hbogert
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Chef-Server 12 Getting me errors when the node is not time synced

I'm getting this error when the clock on my node is different than 15 minutes from my chef server. Authentication Error: Failed to authenticate to the chef server (http 401). enter code here`The request failed because your clock has drifted by…
FlayRonin
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How to read VMware interrupt backlog?

The VMware document titled "Timekeeping in VMware Virtual Machines" have the following referente to the issues with the time drift: If the virtual machine is running too slowly, perhaps as a result of competition for CPU time from other virtual …
rfmoz
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Time is not synced in centos7.3

I have installed stock CentOS7.3, and install chrony yum install -y chrony systemctl start chronyd systemctl enable chronyd If I start CentOS, the time is not synced: $ timedatectl NTP enabled: yes NTP synchronized: no chrony is running, though $…
Sato
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Windows 10 eventually changes time to UTC

I have 9 Windows 10 clients for whom I can not set the time. I proceed to date and time, change the time to the current time and timezone and then within an hour the time reverts to what appears to be UTC even though the timezone stays the same. I…
blackirishman
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Time propogates with an offset

The network is simple, Two Domain Controllers Servers Client Workstations Other Devices The primary DC is configured to synchronize time with NTP servers. The secondary DC and other Servers are configured to synchronize with PDC. Time on the PDC…
Lordbalmon
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Is it worth it to install VMWare Tools on a non-graphical Linux guest (Red Hat 7 hosting an Oracle server)

This came up because I was not able to activate the time synchronization function from the VCD. Most of what I've seen that discussed the benefits of installing VMWare tools looks like it applies to Windows machines, and perhaps also graphical Linux…
libbynotzoey
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Ubuntu CDT time lags by 1.5 min

My servers are Ubuntu 14.04 on AWS. Our application actually needs time in CDT. By default it was UTC, so I created a sysm link for localtime. ll /etc/localtime lrwxrwxrwx 1 root root 27 Sep 14 03:53 /etc/localtime -> /usr/share/zoneinfo/CST6CDT And…
user2700022
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Should Domain Controller Sync the time if there is time difference between locations

I have the Primary DC in Toronto syncing time as NTP. I have a read-only DC in Tokyo, the time sync is NT5DS, so all my servers, PCs on remote site got wrong time now. Do I have to set this read-only DC to sync the time to outside or internally?
Root Loop
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Time Synch Issue in Win Server OS

There is time sync issue in couple of server's. Below is the Description There are two identical server's with same OS and same set of software's running. And they are pretty new server's.In every 30 Min or so OS time gets changed to some random…
Arun Dambal
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how do i force NTP client to symc from the server (windows 7)

i need to make my NTP server to force my NTP clients to sync with him once n a few hours . until now i used the "task scheduler" to set a task in each client to sync with the server but now i have to many clients to do that so i wanted to know if…
kitkat31
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Unable to find the root cause of ntp configuration error

I am trying to configure ntp to synchronize the time of my server. When I run ntpdate -dq 1.rhel.pool.ntp.org I got the following error. no server suitable for synchronization found I am on professional environment, so I guess there is a firewall…
Flows
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NTP / SNTP and UTC Time

I'm trying to get a little bit smarter about the NTP & SNTP protocols. I have read through the RFC's and understand how the protocol works, but I'm uncertain about the timestamps themselves. The RFC's don't actually state that all timestamps are…
Steve Hawkins
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How do I set up a Windows image (not part of the domain) to sync time with the domain controller?

I'm creating a Windows image to distribute to computers, and I want to set it up so that it will sync time to the domain. The problem is that the image is not joined to the domain, so w32tm /config /syncfromflags:domhier /update should not work. I…
Ernst
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Should integration services always be installed on a Hyper-V VM?

Server 2012 R2, Hyper-V In researching my PDC time synchronization problems (noted in this serverfault post) I came across this Microsoft guidance at this link: "For virtual machines that are configured as domain controllers, it is recommended that…
Alan
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