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-2
votes
0answers
15 views

Client time not syncing with Windows Server 2012

Found that the Time for Windows server is correct as it is syncing public time server out there. While I found that the client (all of them are windows 7) are not syncing the time with the server. ...
0
votes
1answer
64 views

Windows Server 2003 DC is 32 minutes slow

I have a Windows Server 2003 DC SP2 that is precisely 32 minutes slow. It is the only DC in the domain. The server is set to query tock.usno.navy.mil. My google fu sadly has failed. Any suggestions? ...
2
votes
1answer
54 views

Can't synchronize time in Ubuntu (Europe/Moscow)

I've got this Ubuntu server virtual machine. I'm trying to setup a correct time on it. I've selected a proper timezone (Europe > Moscow) via sudo dpkg-reconfigure tzdata. After that, I'm using ...
1
vote
0answers
58 views

How to configure a redundant PTP server

I have a Sonoma GPS time server and a server, which should synchronise itself to the GPS clock, and serve as a fallback option. The time should be synchronised using PTP (Precision-Time-Protocol). ...
1
vote
1answer
29 views

Should the Windows Time (W32Time) service be enabled in an Azure VM?

When connecting to a newly created VM in Azure, there's an alert under Services: When clicking on it, it says the Windows Time (W32Time) service is stopped: Should it remain like that, ...
0
votes
1answer
332 views

w32tm /resync not working instantly

This Question is mostly for other people to learn from and to satisfy my own curiosity if someone knows why it does the following. We had a problem with our DC not having the right time due to it ...
2
votes
3answers
261 views

Why doesn't the time match on two Windows Domain Controllers despite resync?

In my domain there are two domain controllers, there is a gap of 3 minutes between their times and than I can find this difference between many clients (it depends on their DC). If I run this ...
0
votes
0answers
54 views

disable windows server time synchronization

I am running a standalone (not in a domain) Windows Server 2012 instance in EC2. For purpose of a simulation, I would like to set system clock to particular dates in the past. I performed change by ...
4
votes
1answer
384 views

Why is the time on my Server 2008 R2 DC wrong? It's syncing to ntp.org, it claims

OK. After a lot of fun with syncing time across my workstations, I got that sorted out. My workstations are now perfectly synced with my Server 2008 R2 Domain Controller (physical server, not ...
1
vote
1answer
58 views

NTP Server in Network Switch

Is it possible to set up a Switch to acts an NTP Server for the devices connected to its VLAN ? If so ,how can I implement it my HP Switch A3600 JG299A. I want to do this because I do not have ...
0
votes
0answers
31 views

Do I Need a PTP Aware Switch?

We have a PTP Grandmaster clock which we will be using on a dedicated network for PTP time synchronization. It is necessary for us to use a switch to distribute the signal to multiple clients. Does ...
1
vote
1answer
45 views

EC2 - MS Server 2012 constantly resetting its own time

I have an EC2 box of instance type m2.4xlarge running Windows Server 2012 Standard in a VPC in US-West-2. The following ports are open inbound: TCP 1433 (MS SQL) TCP 3389 (RDP) UDP 123 (time synch) ...
1
vote
2answers
150 views

EC2, Ubuntu: Serious time difference between servers

Some of my tests on EC2 servers began failing. When I dug in, the reason was serious time mismatches between my servers: Sun Jun 22 14:43:43 UTC 2014 # Laptop Sun Jun 22 14:46:36 UTC 2014 # Server ...
1
vote
1answer
456 views

Is timesync still required for Windows Server 2012 R2?

Our servers are on a workgroup, we are a small company and do not use a domain controller. In Windows Server 2008 R2 we used TimeSync to help keep the most accurate time, not sure it was really ...
13
votes
2answers
534 views

What can be done to improve time synchronization on networks with sporadic internet access?

I'm looking for advice setting up time servers for a very non-typical network. I support many closed networks that have occasional access to the internet. A network would get access most days for a ...
1
vote
1answer
163 views

Domain member as ntp server for other (non-domain) network

I am attempting to synchronize the date and time for a number of computers belonging to a non-domain, statically configured network (e.g. computer B in illustration) with a node which is residing in a ...
2
votes
0answers
76 views

System clock jumps over 50 seconds randomly

Having a really strange and frustrating issue with system clocks across a few (non virtualized) Ubuntu 12.04 servers. The system clock jumps unpredictably by over 50 seconds. Here's a part of the ...
1
vote
0answers
136 views

ntpd -gq do not working on CentOS 6.4

when I'm running 'ntpd -gq' from CentOS 5.10 (i686) the time is synced, but in CentOS 6.4 (x86_64) the command gets stuck (I need to stop it using ctl+c). Any idea hoe to fix it? EDIT: iptables ...
3
votes
1answer
120 views

Synchronizing RODCs to NTP servers?

I've read this nice article from Gareth Hooper regarding Domain Controller syncing to external time sources. In essence, he wrote that although Microsoft don't actually condone the practice, it's a ...
4
votes
2answers
3k views

Active Directory Time Synchronisation - Time-Service Event ID 50

I have an Active Directory domain with two DCs. The first DC in the forest/domain is Server 2012, the second is 2008 R2. The first DC holds the PDC Emulator role. I sporadically receive a warning ...
0
votes
0answers
192 views

How can I suppress rtc error messages in a CentOS 6 PV DomU?

We run a number of CentOS6 PV DomUs. Now logwatch reports afer reboot rtc-errors of this type: kernel: platform rtc_cmos: registered platform RTC device (no PNP device found) rtc_cmos: probe of ...
1
vote
0answers
129 views

Wrong time on RODC after dcpromo

My team has been experiencing this strange problem: After doing dcpromo (followed by reboot), the time on the newly promoted RODC rolls back to the year 2011. Before dcpromo, the time is correct. ...
1
vote
3answers
318 views

Why aren't Azure Linux VM's keeping time sync with host?

Using Ubuntu 12.04 VM's built last year on Azure. They only seem to get proper time on boot, and drift about a second a day. Is this a normal issue for Azure VM's? I know VM time drift is normal but ...
1
vote
1answer
493 views

ESXi host time not syncing with NTP servers

I have 2 NTP servers (AD 2003 machines) and some ESXi hosts, which are configured to sync time from these 2 servers. I found the time is not in sync between these hosts and servers. And time in each ...
1
vote
1answer
1k views

Setting domain computers Time\Timezone from Domain controller

I have found that we can set Computers in domain to Sync Time from Domain Controller. Similarly is it possible to control Domain controllers time zone(set\Change) from Domain controller.
2
votes
2answers
269 views

ntp server that syncs with other ntp servers but supplies a modified utc

Question We need to create an ntp server that syncs against other ntp servers but gives its client a modified utc. For example, it will receive utc 5:17 pm but it's clients will receive utc 7:17pm. ...
1
vote
2answers
189 views

Clock skew on my VPS server

I am having a problem with the time on my VPS hosted at Rackspace. Its running Red Hat Enterprise Linux 5.4. Date commands gives a time which is 11 minutes ahead of the actual time. I am running ntpd ...
2
votes
2answers
851 views

vmware esxi wrong time after vmotion

After vMotion some guests went 2 hours ahead in time. 2 hours ahead of UTC is exactly our timezone. Why would it do that? AFAICS both source and destination hosts have the same configuration. But ...
0
votes
1answer
400 views

configure time sync for azure VMs

I have several ExtraSmall-sized Azure VMs (PaaS / Cloud Service based) that are all experiencing drifting of the Windows clock. Research showed that this is quite common, especially in VMs with shared ...
-2
votes
1answer
182 views

What time of virtual machine when using VMotion from host to another host?

Nomarlly, virtual machine get time from host, but when vsphere using VMotion to change virtual machine to new host. What's time of virtual machine when it in new host ? Old host time ? new host time ? ...
0
votes
2answers
297 views

How to clear/flush ntp server peer in Centos

We were using centos.pool.ntp.org for our clock sync among servers. Now we do ave a local NTP server, but the problem is servers are using the old ntp. From centos.pool.ntp.org we can see, ...
2
votes
1answer
1k views

Manually syncing comp clock with DC works, but after a minute - clock incorrect by 5 minutes

The problem: DC1 Clock: 17:23 AD joined client clock: 17:28 After client> w32tm /resync time is in sync, but the clock again jumps forward for 5 minutes for client. It always happens in less ...
1
vote
2answers
89 views

Window Server 2008 Time sync [closed]

OS - a) Windows Server 2008 Standard Workgroup OS - b) Window Server 2008 Standard Domain controller. How can i know, from where my Server is synchronizing time with? Is it through Hardware BIOS ...
1
vote
1answer
259 views

ntpdate setting incorrect date after boot

I have a few Debian XEN virtual machines and upgraded them to wheezy(I need the 3.2 kernel for a project). Everything was okay until I rebooted on of the machines. My current problem is, that ntpdate ...
6
votes
2answers
438 views

how to auto-run ntdpdate command?

I have a few dedicated servers and for some reason they are totally unable to mantain the time properly synchronized, every few days they start having differences of minutes in the clock. So I have to ...
2
votes
2answers
347 views

using NTP protocol for internal time synchronisation

I have two embedded system that are connected via ethernet. I want them to run synchronously. Using NTP protocol is an option to synchronize them. But this is a isolated system. I don't have an ...
2
votes
0answers
1k views

Time on Windows Server 2003 off by ten minutes

I have a DC server that runs a network of about 20 computers. This is also the DC and pushes out the time to all the client computers. However the time on the server is 10 minutes fast and is causing ...
1
vote
1answer
1k views

KVM guest time shift on host reboot

I have installed Ubuntu server 12.04 as a KVM host, and created an Ubuntu guest that is also running Ubuntu server 12.04. The servers are in the AST time zone which is UTC + 3 hours. After setting the ...
2
votes
2answers
4k views

Windows Server 2012 DC loses time sync after reboot/dcpromo

I'm currently experiencing an issue that has baffled me for the past few days as none of my searches here or google yielded in any positive results. Our current environment has 19 sites with as many ...
0
votes
1answer
158 views

Why running ntpdate one after one dosnt set offset to 0

I am running ntp update , one after one (with sec between them), In the log i see that there is always an offset , even if update was run few sec ago. Why is that?Is there a chance to get 0 offset? ...
2
votes
1answer
13k views

How to change time source from “Local CMOS Clock” to “DC”

In a domain, I want to set DC as time server. To do that I use this command: w32tm /config /manualpeerlist:europe.pool.ntp.org /syncfromflags:manual /reliable:yes /update and w32tm /resync ...
0
votes
3answers
686 views

Sync clock on Windows XP machine to external (non-domain, non-workgroup) Windows Server 2008 R2 machine

I have two machines and I'd like their clocks to be in sync for various reasons. Machine 1 is an XP machine located in the office. Machine 2 is a VPS hosted by a third party running Windows Server ...
1
vote
1answer
1k views

Can't sync time between domain controller and another servers/computers (windows 2003)

Good morning, We have domain controller on windows server 2003 and another windows 2003 servers with terminal server and DB and regular workstations. Today in Israel we returned back to winter time ...
1
vote
1answer
299 views

Disabling Host-to-Guest time sync in EC2 windows

In an EC2 instance (Xen Virtualized) is it possible to disable time sync on a Guest VM by Host VM. I found that it can be done on Linux instance by modifying xen.independent_wallclock=1 Is there any ...
4
votes
1answer
2k views

How do I re-enable the VM IC Time Synchronization Provider for a Hyper-V client?

We have a Windows domain network with 2 Hyper-V hosts. On these hosts, there are several Hyper-V VM clients. Two of these clients are Domain Controllers. The Hyper-V hosts are both clients of that ...
2
votes
2answers
379 views

Windows Time Service OS Compatibility

Some of our servers have Domain Time II on them but we are having to make the possible decision to buy over 100+ licenses for Domain Time II or enable the windows time service. The installation of ...
0
votes
2answers
505 views

Hyper-V Centos VM System Time go forward

I have hyper-v virtual machine with Centos OS. My system time is always an hour ahead. I tried disabling the time sync in Hyper-V VM settings but to no avail. As I can see, the hardware time is ok.. ...
2
votes
5answers
2k views

Does CentOS 5.4 properly handle leap seconds?

Apparently the IERS have announced a leap second due at midnight, June 30th this year. Is CentOS/RHEL 5.4 properly updated to support/transition along with updated NTP systems? I was under the ...
10
votes
3answers
2k views

Timesync on HyperV with CentOS 6.2

I've got a CentOS VM (release 6.2) running under HyperV. I have integration services installed (part of base now), and CentOS shows the current clocksource is hyperv_clocksource, however my time in ...
2
votes
3answers
468 views

Should I timesync against PDC Emulator or NTP timesource? (PDC not in hub)

I know the best practice would be to have the PDC Emulator to sync against an external NTP time source, and have all other domain controllers sync against the PDC Emulator. However, my network layout ...