Questions about the NTP protocol and applications that use it. NTP is an acronym for Network Time Protocol.

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2
votes
1answer
58 views

Force ntpd to have offset from time server

Is it possible to force ntpd to have a fixed time offset, e.g. 10 minutes, to another server? To be able to test that our devices do nicely sync with a single ntp source, we would like enable/disable ...
0
votes
1answer
106 views

Can't run ntpdate on EC2

I have had some serious issues with time accuracy on my Ubuntu EC2 machines, with drifts of more than 60 seconds. A possible solution is running ntpdate or ntp, but I can't get them to work on EC2: ...
0
votes
1answer
47 views

How to time sync two systems in same network?

I want my laptop to derive it's clock time from another system which is located in another building.Both the systems use Ubuntu 12.04
0
votes
1answer
569 views

enable/disabling NTP server

Our application runs on ubuntu 12.04 precise. On this server, we have both ntpdate and ntp. How to enable and disable NTP service on-demand? I tried 'sudo update-rc.d -f ntp remove/default' and 'sudo ...
-1
votes
1answer
65 views

How do I make my laptop act as an NTP server in LAN without connecting to the internet?

I need to set my laptop as an NTP server within my own local area network. From what I notice, I am able to sync the client to my NTP server in a local area network ONLY when a.) There is an ...
2
votes
0answers
189 views

NTPD segfaults on 12.04 LTS (64-bit)

Fresh install of Ubuntu 12.04 LTS. Installed ntp, but starting the service only results in the following error: grsec: Segmentation fault occurred at 0000000000000008 in /usr/sbin/ntpd[ntpd:28951] ...
1
vote
0answers
144 views

server time drift not fixed by ntp.conf

This question was asked a lot in the past, but since ntpdate has been depricated, I'm having issues finding answers that work via ntp.conf. I've read a lot about setting a cron job for ntpdate is a ...
1
vote
0answers
38 views

start ntpd -qg after network connection

I am trying to synchronise two machines that connected over ad-hoc network. None of the computers are connected to the internet. One computer doesn't have a Real Time Clock, so everytime I reset it, ...
1
vote
0answers
52 views

Is there a program for analyzing NTP server statistics?

I'm running Ubuntu 12.04 and have the NTP server running, apparently OK. I run the Meinberg NTP server on my two Windows 7 boxes and use its associated server monitor to keep track of what it's up to. ...
1
vote
0answers
141 views

NTP service, offset increasing after sync

I have installed Ubuntu 12.10 version on my PC. I am running NTP service having NTP server as GPS. I found that when we start NTP service by ntp start command, PC is able to sync with GPS as I get ...
1
vote
0answers
367 views

Synchronise clocks on ubuntu running in EC2?

I've got three servers running on AWS EC2 using official Ubuntu AMIs using paravirtualisation. I have noticed their clocks are out of sync by about a minute. NTP is not installed by default in the ...
1
vote
0answers
107 views

How to configure NTP with permanent slew adjustments?

There are several questions that I hope the community can assist with: Is the following approach correct and a recommended best practice? Would ntpd with the -x option be persistent even after a ...
1
vote
0answers
181 views

system clock is 5.5 ahead although ntp

time zone here is Asia/Tehran, but the ubuntu time is 5H30M ahead of local time. I've checked configs and even installed ntp server, nothing seem to fix this, sudo dpkg-reconfigure tzdata Current ...
0
votes
0answers
8 views

Ubuntu NTP time wrong after reboot

Running 12.04LTS for a while now. When we reboot, the server comes on with the time 46 minutes slow. nearly every reboot. We installed ntp (apt-get install ntp) so the time does auto-correct after 4-5 ...