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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14
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3answers
106 views

Risk of starting NTP on database server?

I've heard rumors of bad things happening to database and mail servers if you change the system time while they are running. However, I'm having a hard time finding any concrete information on actual ...
0
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1answer
25 views

How to correct the time on a Red Hat EL6 server? Clock is almost 3 hours behind

This did not work: [~]: sudo /usr/sbin/ntpdate pool.ntp.org 19 Feb 08:03:26 ntpdate[6939]: the NTP socket is in use, exiting So, I'm not sure how to proceed... also tried this to no avail: [~]: ...
-1
votes
1answer
43 views

date and sleep during leap second [closed]

Did you ever watch what happens with a sleep during a leap second or what date will show us? Most UNIX systems can handle a sleep with a fraction of a second and the date command can display ...
1
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0answers
20 views

Changing the hostname on a Linux Mint desktop to a random value at boot time [migrated]

When changing the hostname to a random set of alphanumeric characters on a machine running Linux Mint(17.1 Rebecca, Cinnamon 64-bit) I encounter some problems. The following script changes the ...
0
votes
0answers
20 views

How to properly set apache timeout and number of simultaneous users?

After reading the apache documentation and searching for something that could help me on ServerFault, I'm still confused about how apache Timeout and MaxRequestWorkers work. In particular I have two ...
0
votes
2answers
21 views

bind cache not used?

i installed a classic bind9 dns server inside a local network, working as a forwarding dns server, there is my config file (i just added my ISP DNS servers as forwarders): options { directory ...
0
votes
0answers
16 views

Using RTC to synchronize ntpd when offline

I need a stable configuration, presumably using ntpd, to keep system clock as precise as possible. Background: I have several embedded devices (arm9) running linux (currently: 3.16.1 / debian 7.2) ...
0
votes
0answers
23 views

tzutil.exe keeps changing server timezone

The time-zone on my windows 2008 server keeps being changed, I performed an audit on the "RegQueryValue" registry operation and "TimeZoneKeyName" key found on the following path ...
0
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0answers
23 views

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 ...
2
votes
1answer
37 views

system clock skewing backwards 112 seconds

I'm troubleshooting a problem on one of my NTP servers. This server seems to defy logic, and I'm at my wits end trying to troubleshoot it. Roughly every 162 seconds, the system clock reverts to ...
12
votes
3answers
1k views

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 ...
0
votes
1answer
30 views

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 ...
5
votes
2answers
143 views

Windows Server 2012 time keeps setting itself 12 minutes ahead

Our Active Directory server has a problem whereby the time keeps setting itself 12 minutes ahead of the real time. This causes authentication issues on the network. I have tried syncing to an ...
1
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0answers
84 views

Domain time drifting with VM DCs / host domain members

I'm following the advice given in this article: ...
-2
votes
1answer
92 views

What is the best way to measure latency via a “telnet to port” test, preferably with built-in Linux tools?

I'm writing a Graphite/Diamond collector measuring network latency. Specifically it should measure the time it takes to open up a connection to a port on a remote server. And it needs to work via ...
0
votes
1answer
36 views

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 ...
2
votes
1answer
97 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
148 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
77 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). ...
5
votes
2answers
373 views

Synchronize clock with NTP while online, and with RTC while offline?

Is there a existing mechanism that synchronizes a linux system with NTP while online, and with a predictably drifting RTC while offline? We operate remote "collectors": embedded Linux systems that ...
3
votes
3answers
345 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
3answers
155 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
29 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
166 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
1k 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
107 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
63 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
37 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
74 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
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1answer
463 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
1k 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 ...
4
votes
2answers
364 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
247 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 ...
2
votes
1answer
1k 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 ...
0
votes
1answer
50 views

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`"
4
votes
1answer
1k 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
720 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
40 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, ...
2
votes
0answers
78 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
1answer
516 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
781 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
1k 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
114 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 ...
1
vote
1answer
109 views

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 ...
2
votes
2answers
281 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
214 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 ...
1
vote
1answer
613 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 ...
2
votes
1answer
416 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
220 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
108 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 ...