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Questions tagged [clock-synchronization]

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When to change current_clocksource

I am running an Ubuntu 16.04 machine on a M4.xlarge in AWS EC2. I was reading about some of the performance tuning that Netflix did for their EC2 machines (link:…
jamesatha
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NTP service stopped in centos7.1 linux machine

In our 3 linux boxes centos 7.1, we saw below messages in the logs and then ntpd service got stopped since the offset is more than 1000s. systemd: Time has been changed ntpd[2626]: 0.0.0.0 0617 07 panic_stop -26789 s; set clock manually within 1000…
xrkr
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How to synchronize the time in Debian6 server? We have 30 min delay in our VMs

I can't have the correct time in our servers. We get always the same delay in the three of them (they are VM on the same server). We use ntp to have our date always synchronized· The main server which is virtualized has OS Linux Proxmox. What I have…
Emilio Nicolás
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Windows server and AWS clock synchronization

I have a Windows 7 computer that communicates with Amazon Web Servers (S3, SES). This server uses windows internet time for clock synchronization time.windows.com. On my linux machines I ran into clock drifting issues that caused S3 URLs to expire…
The Internet
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Is TimeSync still needed on Windows Server 2008?

I've always used TimeSync on my servers. With Windows' built in internet time updating, should I remove TimeSync? I've never turned off windows time updating even with TimeSync - what is the best setup? Remove TimeSync - it's no longer needed Use…
Neal
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Virtualizing NTP server

Possible Duplicate: What are the limits of running NTP servers in virtual machines? I was wondering if virtualizing NTP is okay. I have a VMware ESXi 5.0 box, and I want to virtualize my router since the original hardware bit it. The only thing…
AtomicPorkchop
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No info found about `ethtool -T` output?

Nowhere I can find such info, to interpret the following number: PTP Hardware Clock: 1 Most documentation I can find (e.g. from RedHat it shows 0). What does it mean?
jaques-sam
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How can I verify if time is set correctly on server in my bash script?

I'm working on ultimate backup script for very important server. My script already: creates a backup verifies copied file(-s) verifies gz archive compares MD5 on local and remote after sending file to remote server via scp removes monthly backups…
Kamil
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How can the local time clock of a server become the NTP time source in a network?

I want to make a the local te clock in a Stratum 1 server be the network time source for my network (I don't want a Stratum 0 server with the antenna). How may I set this up in a network? Is there a tutorial which explains how to use network time…
Baldovín Cadena Mejía
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Cannot change NTP Time Source on a 2012 R2 DC Server

So I have seen dozens of people with this issue on various websites and forums, but here I am asking again. No matter what I try so far, nothing has fixed the issue which I will describe below in as much detail as I can. To start, the server is…
ksrobinson
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Is there a way to keep server times in sync to the millisecond, globally?

I'm working on a project where I need to keep server times in sync, to the millisecond. There are servers in the UK, US and Asia amongst other countries, and at the moment someone is manually having to sync the times to ensure they all match, which…
Professor of programming
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ntpdate succeeds but ntpq fails against Windows DC

DC: Server 2019 Client: TrueNAS https://docs.microsoft.com/en-US/troubleshoot/windows-server/identity/configure-authoritative-time-server for step 3, the DC is configured to be an NTP server and is serving UDP 123. ntpq times out but ntpdate will…
Tyler Montney
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DC NTP not syncing and Local CMOS Clock issue

I've configured my DC (Domain Controller; Windows 2016) as described here to get his time from my Sophos-UTM. So i configured the GPO as described there. But after that and a restart of the server i noticed that when i run the command w32tm /query…
Opa114
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ntp daemon seems useless and why my server date time is far behind my local time

I've installed ntp daemon in ubuntu to sync my date time with the network time. Now my time on the server is 11:00 while my PC date/time is 19:30. Now all my transactions date/times are logged incorrectly. How should I adjust that? Should I use the…
Alireza
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System Time Synchronization Procedure

I am looking for procedure which I can execute in cron to synch the system time in clustered servers. Can any of the experienced SME's please help?
Pete Ekanem
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