ntp.rst
author Oleksandr Gavenko <gavenkoa@gmail.com>
Tue, 07 Feb 2023 00:39:25 +0200
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.. -*- coding: utf-8; -*-
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=====
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 NTP
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=====
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.. contents::
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   :local:
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What is NTP?
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============
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NTP is a protocol to synchronizing the clocks on host using publicly
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available NTP servers.
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Famous NTP servers
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==================
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Many Linux Distros provides time servers::
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  0.debian.pool.ntp.org
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  1.debian.pool.ntp.org
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  2.debian.pool.ntp.org
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Some big companies too::
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  time.google.com
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Or educational institutions::
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  time.mit.edu
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Or individuals and volunteers::
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  us.pool.ntp.org
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  ua.pool.ntp.org
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https://developers.google.com/time/
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  Free, global time service with leap-smeared time.
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https://www.ntppool.org/en/
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  Big virtual cluster of timeservers.
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Under Debian
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============
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Install ``ntpdate`` package::
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  $ sudo apt-get install ntpdate
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and sync date with some NTP server::
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  # sudo ntpdate 0.debian.pool.ntp.org
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Under Windows
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=============
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See:
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http://support.microsoft.com/kb/q216734/
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  Windows Time Service Tools and Settings.
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http://support.microsoft.com/kb/q223184/
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  How to configure an authoritative time server in Windows 2000.
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http://support.microsoft.com/kb/307897/
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  How to synchronize the time with the Windows Time service in Windows XP.
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http://support.microsoft.com/kb/216734/
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  How to configure an authoritative time server in Windows 2000.
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