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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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
10k 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
1k 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
32 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
134 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
2k 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 ...
2
votes
2answers
3k views

Domain time issue, server to clients

I have a server 2012 running as the DC also running DHCP. I have three PCs on this domain right now and all three get the incorrect time. The server has the proper time set and the proper time zone ...
1
vote
2answers
343 views

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 ...
2
votes
0answers
64 views

Pinpointing source of clock inaccuracy

I am having a huge problem with the clock on a Windows XP machine. Whether getting its time from the domain controller using w32time and an ntp server (PDC) / client, from a GPS clock directly using ...
2
votes
5answers
953 views

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 ...
0
votes
2answers
579 views

Exchange 2007 ResetSearchIndex.ps1 time

I am relatively new to exchange. We are running Exchange 2007 sp2 for a medium/large institution and we are having trouble with OWA's search function not working. I was going to try running ...
0
votes
0answers
277 views

Meinberg NTP Client large wandering

All, One of the computers on my network runs Windows Embedded Standard and is running the meinberg NTP client and gets its time directly from a GPS clock. The service is set to run automatically and ...
1
vote
1answer
2k 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 ...
0
votes
4answers
38 views

What authentication methods use the system clock to assist authentication?

What authentication methods use the system clock to assist authentication? I have encountered issues in the past with CA and my system clock being slightly out of what sync with what it should be in ...
1
vote
2answers
1k views

Discovering NTP servers providing time service on network

As a linux (Debian-based) host on a network, how can I discover whether an NTP service exists somewhere locally on the network? Thanks.
0
votes
3answers
240 views

configuring server time to allow for daylight savings [closed]

Ive got a script that is allows users to submit data to a db, when data is submitted a timestamp is also added, my local time zone is GMT, as is my server time as set it plesk 11, but when the data ...
0
votes
1answer
199 views

Average time to retrieve the data from hard drive?

Is there a formula to approximate data transfer times from hard disks? For example, suppose I want to retrieve a 512 byte sector of data off a 7200RPM hard disk with an average seek time of 9 ...
6
votes
2answers
21k views

date: cannot set date: Operation not permitted [duplicate]

I have received an interesting problem during I tried to set my Server time either with NTD or manually using date command. First of all I have tried to use NTD. I have succesfully installed the ...
1
vote
1answer
2k views

Cannot change date/time on virtualized centos install without a reboot

I have a dedicated web server which is running centos with xen virtualization that has centos installed on the vm. I do not have access to the parent server, I can only manipulate the vm, of which I ...
0
votes
1answer
224 views

How to change the current time inside apache and mysql from shell in ubuntu?

I need to test my backend with different times without change the code.
0
votes
1answer
340 views

Review of a crontab script to add timestamps to minutely runs; any suggestions?

I've got a crontab job set to run minutely as such: * * * * * /home/username/public_html/domain.tld/production/scripts/cron_runner.sh My goal is to add some timestamps to output from cron so I can ...
0
votes
1answer
841 views

KVM guest clock sync with host

I'm running KVM w/ centos 6.x. My guest vm clocks are booting with a 1-2 second lag from their host. My clocksource for the host is ntp. My clocksource for the guest is "kvm-clock", but I need to ...
2
votes
1answer
442 views

Linux date translation to different time zone

The Linux server is hosted in EST timezone. But I want to translate the output of date command to IST(Indian Standard time +5:30 hrs) format and use it in a shell script. Is there any option available ...
0
votes
1answer
156 views

Set system time using SNMP?

Is it possible to set system time on Windows Server using SNMP? So you push out the time instead of using NTP
1
vote
1answer
12k views

How to set hwclock to UTC?

The times on my arch linux workstation got messed up, so I set the system time with date and then the hardware time with sudo hwclock --systohc --utc Now the hwclock gives: Do 04 Apr 2013 14:12:...
0
votes
1answer
243 views

CentOS 6 recompile PHP and Freetds

I got something wrong with the default freetds (v 0.9.2) in my CentOS 6, reading the datetime from sql server is messed up in using mssql (dblib) extension, and it's said recompile php with current ...
5
votes
2answers
7k views

Is it viable to use w32tm /stripchart to judge time variance of two Windows hosts from each other? A better way to discover two host's time variance?

Is it viable to use w32tm.exe's option stripchart to judge the time variance of two hosts (within a very small margin of error)? Note that w32tm.exe's stripchart function is separate than the ...
0
votes
2answers
759 views

Why my server request takes 28 Second to get response?

I have a Wordpress website on a Godaddy server having at http://kerala.letmeshare.org. When I request to get this website this takes almost 28 sec to get reply. Because of this I made a complete ...
2
votes
2answers
913 views

Ntpd excessively inaccurate

I have ntpd set up (Meinberg ntp-4.2.6p5@london version for Windows on a Windows 7 client) with a bunch of nearby servers selected for low ping times (usually 10-20ms ping). However it seems my clock ...
2
votes
1answer
893 views

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 ...
1
vote
2answers
8k views

Setup of NTP on Hyper-V servers

I am having problems with NTP setup on our Hyper-V host and clients. I am not using Domain Controller (almost all advise is given for DC's which I am not using). On all servers I have used the ...
1
vote
1answer
297 views

Linode Fedora shows an incorrect time

My fedora 17 linode VPS shows an incorrect time. The current real time in Dublin is 15:13 but my linode shows the time below which is out by 3 hours and 45 minutes: cg@lin:~$ ls -l /etc/localtime ...
2
votes
2answers
817 views

disk bytes/s read and write

I'm trying to figure out how to count read and written bytes per second. At the moment what I'm doing is I read the data from /proc/diskstats which looks like this: 202 0 xvda 80702313 1132334 ...
2
votes
0answers
5k views

Setting Shoretel phone time correctly with dhcpd

Our Shoretel 230 phones are not picking up time service correctly and thus, the time on the display is wrong. When I go to the diagnostics of the phone, they are using a wrong time server (old). Here ...
4
votes
2answers
480 views

How do I make all Xen guests use their host clock value?

I've set up Xen server under Linux with several guests running, and all was well. After some time I've noticed the clock on the server drifted away, so I installed 'ntpd', and the clock was back to ...
2
votes
1answer
729 views

Use shell built-in time while checking exit status of a function and suppressing output

I am attempting to do the following in a bash script and am wondering if it is possible: Time the output of a command (in this case, mysql) using time Suppress the stdout output of the command ...
-4
votes
1answer
235 views

linux + change/edit file without effecting on file date [closed]

I want to edit some file in my linux for example ls -ltr /etc/some_file -rw-r--r-- 1 root root 188 Jul 1 2010 sysstat . echo "Server101_IP=187.0.98.4" >> /etc/some_file . I ...
-1
votes
1answer
445 views

I need a script to lockdown the system time to users via gpedit.msc [closed]

I need to lockdown the system time on a number of PCs via gpedit.msc and then removing administrators from the group and then adding 'administrator' and 'polling'. Can I do this via a script? ...
0
votes
2answers
163 views

How to do safely test Biztalk app by manipulating the Windows OS system time w/o breaking the Active Directory?

i have a biztalk - window service tied middleware application which talks to other system. recently we had a request to test for scenarios which relates to the date. as we have a lot of places in ...
0
votes
3answers
1k 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 ...
2
votes
1answer
729 views

Time issues on the Network — How to find the Root Cause

A number of application servers started erroring out in my domain. Troubleshooting led me to a missconfiguration of NTP. I fixed the issue, but I don't know how the issue arose in the first place. ...
2
votes
2answers
236 views

Adjusting Windows time drift without internet on Windows Server 2003

I have Windows Server 2003 on a local LAN that has no internet connection, and need somewhat accurate timing. Unfortunately currently Windows loses about 1-2 minutes every week, which is why I have ...
0
votes
1answer
168 views

I changed time zone on DB & Web Server. Now SMTP sending is delayed

Both web & DB servers are running Windows Server 2008 R2. They are instances in the same datacenter at Amazon EC2. I changed both servers from central to eastern time zone using the windows GUI. ...
5
votes
1answer
780 views

Changing time or offsetting it in OpenVZ contained server

I am trying to run a VPS, a Debian box contained in an OpenVZ container. Obviously, I cannot use time --set or any such command, as the time must be set via the parent node. The owner of the parent ...
2
votes
1answer
107 views

Users changing date/time from BIOS

We have around 350 Windows XP PC and a Windows 2008 R2 Server. The problem is that some users are changing the date/time from BIOS and the next user who would try to log-in on that PC would get the ...
5
votes
3answers
1k views

Dell T710 time issue, clock loses time every day

I have a Dell T710 here at work that for some reason will not keep proper time. Its a dual quadcore with 32GB ram and runs Windows 2008 R2. Instead of Having multiple servers we run a few virtual ...
10
votes
2answers
5k views

What is the clock frequency inside 10Gb and 100Gb Ethernet cards?

As I understand, a 10Gb Ethernet card is capable of putting 10Gb every second on (say) a fibre optics cable. Now naively, for this to happen in hardware, one will need a 10GHz clock running the ...
4
votes
2answers
421 views

how to cause linux system datetime to run faster than real world datetime?

Background I want to monitor a running linux system over several days. It's a custom gentoo build and with much custom software on board. This software has ongoing maintenance timers and cron ...
1
vote
1answer
439 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 ...
1
vote
1answer
119 views

Is it safe to change the time on hosting VM server?

So, I noticed there's about a 10 minute drift on my VM hosting server from what time it's supposed to be. In traditional environments, I would just restart the system (and change the BIOS time if ...