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0answers
9 views

/proc/stat btime value change after boot

In a Linux server with the kernel 3.16, not virtualized, but with the ntp daemon active, the variable "btime" wich gives the time at which the system booted, change a few seconds before booting. For ...
0
votes
1answer
26 views

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 ...
1
vote
1answer
31 views

Syncing Windows 2012 time to Windows 7

I have one Windows 2012 server and one Windows 7 computer, none of them are running Active Directory. I want the Windows 2012 server to sync its clock with the Windows 7 computer (the Windows 7 ...
-1
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0answers
66 views

Sync files between two web servers

How can we sync files between two web servers? First web server is primary and second is used for failover. We need to sync (rsync?) from primary to secondary. If we primary fails and come back ...
0
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2answers
40 views

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 ...
1
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1answer
41 views

How do I confirm what my PDC is using for it's time source and how do I setup an external time source?

Server 2012 R2, Hyper-V I am trying to finalize setting up my first primary domain controller. One of the warnings that always comes up after first promoting the DC is Event ID 12 along with other ...
5
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2answers
235 views

Time synchronization in an heterogeneous environment

In a mixed environment, where machines can be running under Windows (most), Linux (a few), sometimes Android ... what is the best solution to have time synchronization with an accuracy close to ...
2
votes
2answers
240 views

What problems result from servers not time-sync'd?

What problems might arise within a domain when the member servers are not properly time-sync'd? I'm aware that log entries are incorrect making troubleshooting more difficult in time-sensitive ...
0
votes
1answer
62 views

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 ...
1
vote
1answer
89 views

Time Sync Offset on Domain Controllers and Hyper-V Hosts

I have a network with the following: Windows 2003 (PDC Emulator) (in the process of migrating) Windows 2003 DC (same) Windows 2008 Hyper-V Host w/ 5 VMs, one VM is a DC, soon to be the PDC ...
33
votes
6answers
4k views

Why is it important that servers have the exact same time?

I have read multiple times (although I can't find it right now) that data centers take great effort to make sure that all server have the exact same time. Including, but not limited to worrying about ...
0
votes
2answers
77 views

Enable Windows Time Service on Secondary Domain Controller

We have an interesting scenario at my workplace. Our primary domain controller started to fail, so we installed a secondary domain controller to allow people to login when the primary would fail. ...
1
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1answer
93 views

Time Zone keeps changing after sync with PDC in different site

Background: I have a single domain, running in 2 sites that is connected using Site-to-Site VPN. Site A is running in time zone 2:00+ UTC Site B is running in time zone 4:00+ UTC DCs are correctly ...
1
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2answers
107 views

PTP (or NTP) and Domain Controller clock sync

We need a high precision (1ms) clock synchronization across multiple machines which are part of the domain. The idea is to use a PTP solution. Is it possible to setup a computer which is part of the ...
0
votes
1answer
140 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
142 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
115 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
218 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, ...
1
vote
1answer
2k 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
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3answers
5k 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
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0answers
283 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 ...
5
votes
1answer
3k 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
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1answer
104 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 ...
1
vote
1answer
160 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) ...
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2answers
354 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 ...
3
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1answer
6k 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
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2answers
588 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
365 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
89 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 ...
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0answers
215 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
263 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
10k 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 ...
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0answers
187 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. ...
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4answers
671 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
809 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
3k 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
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2answers
432 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
256 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
1k 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 ...
1
vote
1answer
850 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
257 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
430 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
2k 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 ...
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votes
2answers
104 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
316 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
537 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
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2answers
468 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
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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
2k 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
6k 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 ...