Tagged Questions

Time is a dimension in which events can be ordered from the past through the present into the future, and also the measure of durations of events and the intervals between them.

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2
votes
1answer
35 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 ...
0
votes
0answers
43 views

Server times off by over 1 minute after recently syncing

I manually synced the times (and matched hardware times) on two servers A and B. NTP was running on both machines, so I made sure the /etc/ntp.conf files were identical (the time servers on B were ...
1
vote
0answers
39 views
+50

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). ...
3
votes
3answers
215 views

How to keep the time on multiple servers in sync

I want a cluster of servers to have the exact same time. All are using UTC time zone. Using NTP currently, i still see they seem to be off by 10-20 miliseconds each. Whats the best way to have them ...
5
votes
2answers
128 views

What is an acceptable secure time source in a datacentre environment?

GPS and NTP are two very typical time sources when accurate clocks are required. However, each has an important failing. NTP does not provide authentication of the time source, and so may be ...
0
votes
0answers
18 views

Syncing client and server time for latency comparison

I'm struggling to sync my server's time (an EC2 instance in Dublin) with my local machine. I'm using sudo ntpdate ntp.ubuntu.com to sync my server's time with Ubuntu's time server. I'm then using the ...
0
votes
0answers
69 views

Graylog2 date extractor from tab-delimited file

I have a tab-delimited logs with such messages: 2014-06-01 00:00:56 192.168.1.1 968 http://yandex.ru I can extract date and time with regexp (\d{4}-\d{2}-\d{2}\s*\d{2}:\d{2}:\d{2}) but when I ...
4
votes
1answer
257 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 ...
0
votes
1answer
30 views

Apache TOP command time format?

When running top on an Apache server, what is the time format for the output? For instance, is it minute:second.second? http://i.imgur.com/wBx8PAh.png Edit: I'm running on Ubuntu 14.04 and the ...
0
votes
1answer
51 views

Binding timestamp value to a variable in crontab

I'm basically trying to declare a variable with a date() value in crontab as I will constantly be using the same date structure over and over, here is what my crontab looks like so far. php = ...
0
votes
0answers
30 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
38 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) ...
0
votes
1answer
168 views

Is it better to use the systemd service unit's Restart & RestartSec, or use a systemd timer unit?

I have a couple of in-house automated scripts running at periodic intervals. One is every five minutes, the other is every minute. They don't really need to be ran on-the-dot; e.g. I don't care if ...
0
votes
1answer
607 views

How to configure a Cisco Catalyst 2960 to synchronize with an NTP server

I would like to synchronize a Cisco Catalyst 2960 series switch with a publicly available NTP server such as time.apple.com. I have reviewed the knowledge base article here: Catalyst 2960 ...
1
vote
1answer
152 views

Weird syslog order

Have you ever seen wrong order in /var/log/syslog ? I think that it causes only crontab. Jun 28 22:20:01 alex CRON[2327]: (root) CMD (something > /dev/null) Jun 28 22:21:01 alex CRON[2700]: (root) ...
3
votes
3answers
234 views

System time on Windows Server 2008 server increasing continuously

The system time of my Windows Server 2008 server is increasing continuously. In order to adjust the time, I have to shutdown and reset the time. I have tried changing the CMOS battery, but the ...
1
vote
1answer
307 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 ...
3
votes
1answer
675 views

Windows Server 2008 R2 system time randomly resets to 4 hours in the past

I am having a problem where the time randomly jumps to 4 hours in the past. As a result, none of the scheduled tasks (such as backups) happen at the correct time, and some time-critical applications ...
3
votes
1answer
365 views

Why did my Windows Server 2012 R2 timezone change overnight?

When I logged into my workstation this morning, the timezone had been changed from Eastern to Pacific. In the event viewer I see the following three events, all at 4:12:15 AM. It looks like the ...
0
votes
0answers
37 views

How can I select ntp the time source for a system?

I have two Windows 2008 servers running Meinburg NTP. When I run ntpq.exe -p from one, I see that there are sources specified as current, selected, or discarded (via a +, -, or *). On another system, ...
1
vote
1answer
139 views

Websphere MQ - Query view message with long time in queue

I need a query or just a command to see stopped/delayed/waiting messages in a queue, but for long time.
0
votes
1answer
346 views

CentOS keeps losing its localtime setting? [duplicate]

I'm running an extremely typical CentOS 6.5 server at DigitalOcean. As part of the site setup, I've changed /etc/localtime to something appropriate for me: rm /etc/localtime ln -sf ...
1
vote
2answers
539 views

Remote Desktop Connection Issue

I have 2 HP Proliant servers with Windows Server 2008 R2 installed on them. They are headless servers, and I do not have a way of visually seeing the user interface of the servers. I do however know ...
1
vote
2answers
84 views

Why date and touch/stat return different time value?

In my system SLES 11.2, I get strange output for file access time. The date command output the correct time: Then I create a new file "a" by running touch, and use stat to check the access time of ...
2
votes
2answers
146 views

How to configure NTP has a TAI or GPS time reference?

For our project, we would like to have all servers and systems synchronised to a linear time reference (without leap second). Therefore, we would discard UTC but are very interested in advertising ...
1
vote
0answers
141 views

demonstrate Automatic Hardware Clock Synchronization By the Kernel (11 minute mode) without ntpd

From the man page of hwclock: This mode (we'll call it "11 minute mode") is off until something turns it on. The ntp daemon xntpd is one thing that turns it on. You can Ok, I have a ...
0
votes
0answers
50 views

When does Windows Server update time for DST?

When does Windows Server update the system time to reflect the DST change? We're in EST time and we just had the DST time change on the past Sunday. We expected our servers to transition from 1:59:59 ...
1
vote
1answer
330 views

How to stop time synchronization on an Azure VM

I'm trying to simulate a different date/time on an Azure VM but the time keeps resetting itself to the current date/time. Is there a way to force the server to stay at a specific date/time until I ...
1
vote
1answer
221 views

dmesg time vs system time time isn't correct

I hope that here is somebody that can help me with this strange problem. I think that i know why it is happening but i don't know how to solve it. Maybe it is because the BIOS time isn't set correct ...
0
votes
1answer
134 views

How to set up date/time on DGS-1500?

I have numerous D-Link DGS-1500-28 switches with firmware 1.00.013, 1.10.005 and 2.10.002 on it, and there are no visible option to set up date/time via web- or telnet-interface. Device uses ...
-1
votes
1answer
63 views

Crontab not executing [duplicate]

I'm running CentOS 6.2, trying to run tasks through cron. I've verified crond is running $ service crond status crond (pid 20553) is running... I have no /etc/cron.allow file, but I do have an ...
0
votes
0answers
37 views

apache mod_autoindex last modified format

Is it possible to change the time/date format from the output of mod_autoindex in apache? Now I get this format: 2014-01-10 But I would like to change that to: 10-jan-2014
5
votes
3answers
2k views

hyper-v server time sync source - PDC / external NTP?

The environement: 10 Hyper-V hosts, all AD joined a lot of VMs AD joined and some not some AD DCs including PDC as Guests What You think is the best approach to time sync a hyper-v farm with AD ...
-1
votes
1answer
52 views

Learning Curve and time needed to install/manage Centos Server [duplicate]

Completely newby question please. I always had shared hosting. Now I am about to get a dedicated Centos server. I now need to know whether I should get a managed one or not. 2 questions please: ...
0
votes
2answers
2k views

Correcting CentOS System Clock

Using the time C function (number of seconds since the Epoch) shows that the time on my current CentOS 6 server is about 7 hours behind compared to another server with the correct time. How can I ...
2
votes
2answers
1k views

How long does it take to update all the clocks in a Windows domain?

I know the answer to this might be a bit nebulous, so I'll happily accept an answer that tells me the basic rules for this. Supposing the clock in the PDC Emulator has got all out of whack and this ...
0
votes
1answer
403 views

Windows Server 2012 on EC2 - Clock running too quickly

I have a single EC2 Instance for a small project of mine that runs Windows Server 2012 and the clock in windows seems to be gaining a minute every hour or so and it's causing issues in my token based ...
1
vote
2answers
88 views

Any drawbacks for using same time zone configuration in Data Centers across time zones? [duplicate]

I operate almost entirely in one time zone. Supposing a Data Center in another time zone, it would make sense to configure the machines in that data center to use my time zone, and not local. Are ...
0
votes
3answers
48 views

Microsoft Exchange: can I view the time when an email was written?

Is there a way to check when an email was first written (not sent) in Microsoft Exchange?
0
votes
1answer
150 views

Gentoo server time issue, can't manually set time, NTPD won't correct, too big of a time difference

So, my server is living in the future, unfortunately I can't get lottery numbers, or stock picks out of it. It thinks this is the time: Thu Nov 7 04:07:18 EST 2013 Not correct, I tried to set the ...
0
votes
2answers
347 views

“Issued certificate not yet valid.” with wget?

I am getting the following error when using wget to fetch a file: Issued certificate not yet valid. To connect to www.atlassian.com insecurely, use ‘--no-check-certificate’. Testing with openssl ...
2
votes
1answer
220 views

How often does a Linux check it's /etc/localtime file

I am trying to troubleshoot a problem. Some very helpful information would lead me to a solution is: Often does Linux check the /etc/localtime file? Additionally if there is a configuration file to ...
1
vote
0answers
43 views

CentOS time jumps every microsecond

It's a very strange thing. If I run this shell script on the server CentOS 5 (32 bits). time.sh #!/bin/bash for i in {1..10} do NOW=$(date +"%M:%S") echo "$i $NOW" done ...
-1
votes
2answers
231 views

Windows Event Log SystemTime format [closed]

The follwing timestamp was created during an Windows Security Log TimeCreated [ SystemTime] 2013-10-07T07:31:09.122037600Z In this timestamp I can't understand what 122037600Z part means? Do ...
2
votes
2answers
1k views

Server time off by 1 hour on linux CentOS 6.3 using NTP

So i've setup NTP on my linux CentOS server but my server time is still off by 1 hour. Currently it is 3:53am EST however, on my linux machine it shows "2:53 AM EST" this is with NTP and using ntpdate ...
2
votes
2answers
2k views

Set up an NTP server to allow local machines to be syncronised for Linux

I am trying to set up a machine to act as an ntp server to which the other local machines will syncronise their times to. This needs to happen regardless of whether the ntp server machine is connected ...
2
votes
1answer
396 views

EC2 Instance time and hardware clock

I have set up an EC2 instance, running ArchLinux, for use as a server. Doing what I always do when installing Arch, I try to fix the time by using: # hwclock --systohc --utc This does not work, and ...
1
vote
2answers
28 views

Moving large number of files since date

I've recently moved a large number of files from one server to another with tar -c files_in_dir | ssh user@111.222.33.444 'tar -xvf - -C /new/server/files' Which worked very well. However, I'd like ...
2
votes
0answers
84 views

Server clock runs fast - sometimes

I have 12.04 Ubuntu servers that make a radio link once per hour to send updates and sync clocks. The clocks all stray by about +/- 0.6 seconds per hour, which is expected based their crystal ppm. ...
9
votes
2answers
693 views

What is the strategy for detecting time drift in a linux based data centre?

What is the strategy for detecting time drift in all linux based data centre? This is a more difficult problem than it seems at first. Time drift can cause serious problems for certain applications ...