Questions tagged [time]
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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Syslog randomly logs bad time [duplicate]
Try as I might, I can't figure out why this server randomly timestamps syslog entries with bad time.
Here's a 5-minute stretch of syslog from a few minutes ago. You'll notice there are two places ...
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What is a ToD server, "Time of Day" (Not NTP)
I got a simple task: Setup a ToD server... It is not NTP. It runs on port 37. It seems to be bundled with inetd or xinetd.
Shall be installed on Debian or CentOS. Alternatively FreeBSD (pfsense ...
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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 ...
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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 ...
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Measuring request response time by port
So, I'm currently working on a project in which I spin up a set docker image on a number of different machines and configurations. This image basically contains a web server that accepts a number of ...
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Domain time drifting with VM DCs / host domain members
I'm following the advice given in this article: http://technet.microsoft.com/en-us/library/virtual_active_directory_domain_controller_virtualization_hyperv(WS.10).aspx#...
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Check how much time has elapsed for Cron job and send email
There is a cron job that is set which runs throughout most of the day, sometimes the job gets stuck and I would like to set a time or check on it which let's me know if it has been stuck for more than ...
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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 ...
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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). ...
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Local timezones on servers considered harmful? [closed]
I'm curious as to what other administrators' experiences with timezones, in the context of remotely administered servers, are. In my career I've come across several conventions;
Always, always, ...
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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 ...
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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 ...
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Linux clock loses 10 minutes every week
One of my linux server's clock loses 10 minutes every now and then, nearly every week. I update the time so it stays correct, and although it doesn't really bother me, i'd like to fix it.
I've been ...
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Real-time clock is wrong (from hours to years), one-time non-monotonic change at boot needed. Can Chrony solve this?
I can't guarantee a sane real-time clock on some machines (the time might be wrong by hours, months or even years). Since I also have intermittent networking, I set up Chrony in the hopes it could fix ...
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Share processor time between computers
I'm a developer and I use lots of applications gadgets. (I WORK ON WINDOWS)
I have two computers (HP Dual Core (3.2Ghz) one with 512Mb and one with 1Gb RAM). So I work on both, but when I work I work ...
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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 virtual)....
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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 ...
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Multiple NTP Server Instances on One Server (Linux)
Is it possible to run multiple NTP server instances on the same system? We're using CentOS for our NTP system and want to synchronize specific time depending on what interface the client comes in on. ...
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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?
https://i.stack.imgur.com/fMbcf.png
Edit:
I'm running on Ubuntu 14.04 and ...
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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 = '/...
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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 ...
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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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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 ...
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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 ...
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bash date not using the set timezone
I have
export TZ="/usr/share/zoneinfo/Europe/London"
in my .bashrc file, but the following output the time in UTC (GMT)
export TM=`date +%H%M%S`
export DTTM="`date +%a\ %F\ %T\ %Z`"
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Getting irregular timestamps on NFS file server
Here is the situation:
We have a file server that is not saving timestamps
to a small portion of its files (77 files out of several million). It instead writes a default mtime of 1969-12-31 19:00 (...
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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, ...
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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 /usr/share/...
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Setting time back on a production linux server
I am having an issue with the time on a production linux server being 2 hours fast. I need the time to be accurate for a particular project I'm working on, but am a little nervous to change it, as I'm ...
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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 ...
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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 ...
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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 ...
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How can I stop Active Directory from syncing time with the client
We have several Windows 8 machines that seem to have a problem with their local DateTime. I want them to stop syncing their time with the domain controller. How do I do this?
Some Background ...
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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 ...
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Linux kernel detecting wrong processor frequency
After a cold boot of a 6.0.8 Debian server (HP ProLiant), ntpd played havoc with system time: offset and jitter with respect to the usual and reliable reference time servers growing without limit. (...
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How do I troubleshoot root cause of a hung windows (2003) server?
I have a pair of Windows (2003 Server) servers both running MS SQL Server (2008 EE) that each hang every few months. This has been occurring intermittently :( for the past 15 months pretty much since ...
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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 ...
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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 date/...
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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 /etc/...
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Cent OS 6 clock 3 minutes 35 seconds in the future
I run Cent os 6 64 bit on linode.
server (incorrect):
date
Thu Aug 29 11:41:00 BST 2013
client (correct):
date
Thu Aug 29 11:37:25 BST 2013
As you can see the server clock is in ...
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Windows Server 2008 R2 time keeps changing unexpectedly
There is a serious problem with one of my servers time.
At some random hours (5:59 localtime in the following example) it goes 1 hour back and keeps doing this again and again next times it reaches 5:...
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How to set the date forward on a linux server and prevent it from resetting back to the correct time
I need to set the time on an Ubuntu Server forward 1 week, and keep it there (this is for a testing environment with date-specific conditions which need to be tested/verified by the stakeholders), ...
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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 ...
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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 ...
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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 ...
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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 ...
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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?
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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 ...
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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 ...
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Hardware Clock (RTC) Stuck / Will Not Increment
After we rebooted one of our servers (RHEL), we noticed that it would hang when entering GRUB. The problem was the countdown in GRUB (Booting in 5... 4......) was not counting down, and was stuck at ...
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