forked from abh/ntppool
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Use space indentation throughout the file.
- Loading branch information
1 parent
6f8398c
commit 03859ca
Showing
1 changed file
with
139 additions
and
139 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,155 +1,155 @@ | ||
| [% page.title = 'How do I setup NTP to use the pool?' %] | ||
|
|
||
| <div class="block"> | ||
| <h3 id="use">How do I use pool.ntp.org?</h3> | ||
|
|
||
| <p> | ||
| If you just want to synchronise your computers clock to the network, the configuration file (for the ntpd program from the <a href="http://www.ntp.org">ntp.org distribution</a>, on any supported operating system - <b>Linux, *BSD, Windows and even some more exotic systems</b>) is really simple: | ||
| </p> | ||
|
|
||
| [% INCLUDE "ntppool/use/sample-config.html" %] | ||
|
|
||
| <p> | ||
| The 0, 1, 2 and 3.pool.ntp.org names point to a random set of servers that will | ||
| change every hour. Make sure your computer's clock is set to something | ||
| sensible (within a few minutes of the 'true' time) - you could use <code>ntpdate | ||
| 2.pool.ntp.org</code>, or you could just use the <code>date</code> command and set it | ||
| to your wristwatch. Start ntpd, and after some time (this could take as long as | ||
| half an hour!), <code>ntpq -pn</code> should output something like: | ||
| </p> | ||
|
|
||
| [% INCLUDE "ntppool/use/sample-pool-ntpq.html" %] | ||
|
|
||
| <p> | ||
| The IP addresses will be different, because you've been assigned random | ||
| timeservers. The essential thing is that one of the lines starts with an | ||
| asterisk (<code>*</code>), this means your computer gets the time from the internet | ||
| - you'll never have to worry about it again! | ||
| </p> | ||
| <p>On more recent Linux operating systems, time setting has been delegated to | ||
| <code>systemd</code>. You can use <code>timedatectl</code> to set the time: | ||
| </p> | ||
|
|
||
| [% INCLUDE "ntppool/use/sample-timedatectl.html" %] | ||
|
|
||
| <p> | ||
| On RedHat et al. (Fedora, CentOS, etc.) <a href="https://chrony.tuxfamily.org/"><code>chronyd</code></a> | ||
| has replaced <code>ntpd</code> as the default NTP client (and server). With respect | ||
| to the time source configuration it uses the same syntax as <code>ntpd</code>, | ||
| so you can use the example above. Usually, the shipped configuration comes with a | ||
| a sensible default using the distribution's vendor pool and doesn't need any adjusting at all. | ||
| For checking on the synchronization status, use <code>chronyc -n sources</code>. | ||
| The output is similar to <code>ntpq</code> including the asterisk designating | ||
| the current time source. | ||
| </p> | ||
| <p> On older systems, <code>ntpd</code> may not support the pool configuration described | ||
| above. The following should work with legacy <code>ntpd</code> versions: | ||
| </p> | ||
|
|
||
| [% INCLUDE "ntppool/use/sample-ntpq.html" %] | ||
|
|
||
| <p> | ||
| Looking up <code>2.pool.ntp.org</code> (or <code>0.pool.ntp.org</code>, | ||
| <code>1.pool.ntp.org</code>, etc) will usually return IP addresses for servers | ||
| in or close to your country. For most users this will give the best results.<br> | ||
| <strong>Note:</strong> For historical reasons only <code>2.pool.ntp.org</code> will | ||
| return both IPv4 <emphasize>and</emphasize> IPv6 addresses. The other names only | ||
| return IPv4 addresses. | ||
| </p> | ||
|
|
||
| <p>You can also use the <a href="/zone/@">continental zones</a> (For example | ||
| <a href="/zone/europe">europe</a>, | ||
| <a href="/zone/north-america">north-america</a>, | ||
| <a href="/zone/oceania">oceania</a> | ||
| or <a href="/zone/asia">asia</a>.pool.ntp.org), | ||
| and a country zone (like | ||
| ch.pool.ntp.org in Switzerland) - for all these zones, you can again use the 0, | ||
| 1 or 2 prefixes, like 0.ch.pool.ntp.org. Note, however, that the country zone | ||
| might not exist for your country, or might contain only one or two timeservers. | ||
| </p> | ||
| <p> | ||
| If you're using <b>a recent Windows version</b>, you can use the ntp | ||
| client that is built into the system. As administrator enter</p> | ||
| <h3 id="use">How do I use pool.ntp.org?</h3> | ||
|
|
||
| <p> | ||
| If you just want to synchronise your computers clock to the network, the configuration file (for the ntpd program from the <a href="http://www.ntp.org">ntp.org distribution</a>, on any supported operating system - <b>Linux, *BSD, Windows and even some more exotic systems</b>) is really simple: | ||
| </p> | ||
|
|
||
| [% INCLUDE "ntppool/use/sample-config.html" %] | ||
|
|
||
| <p> | ||
| The 0, 1, 2 and 3.pool.ntp.org names point to a random set of servers that will | ||
| change every hour. Make sure your computer's clock is set to something | ||
| sensible (within a few minutes of the 'true' time) - you could use <code>ntpdate | ||
| 2.pool.ntp.org</code>, or you could just use the <code>date</code> command and set it | ||
| to your wristwatch. Start ntpd, and after some time (this could take as long as | ||
| half an hour!), <code>ntpq -pn</code> should output something like: | ||
| </p> | ||
|
|
||
| [% INCLUDE "ntppool/use/sample-pool-ntpq.html" %] | ||
|
|
||
| <p> | ||
| The IP addresses will be different, because you've been assigned random | ||
| timeservers. The essential thing is that one of the lines starts with an | ||
| asterisk (<code>*</code>), this means your computer gets the time from the internet | ||
| - you'll never have to worry about it again! | ||
| </p> | ||
| <p>On more recent Linux operating systems, time setting has been delegated to | ||
| <code>systemd</code>. You can use <code>timedatectl</code> to set the time: | ||
| </p> | ||
|
|
||
| [% INCLUDE "ntppool/use/sample-timedatectl.html" %] | ||
|
|
||
| <p> | ||
| On RedHat et al. (Fedora, CentOS, etc.) <a href="https://chrony.tuxfamily.org/"><code>chronyd</code></a> | ||
| has replaced <code>ntpd</code> as the default NTP client (and server). With respect | ||
| to the time source configuration it uses the same syntax as <code>ntpd</code>, | ||
| so you can use the example above. Usually, the shipped configuration comes with a | ||
| a sensible default using the distribution's vendor pool and doesn't need any adjusting at all. | ||
| For checking on the synchronization status, use <code>chronyc -n sources</code>. | ||
| The output is similar to <code>ntpq</code> including the asterisk designating | ||
| the current time source. | ||
| </p> | ||
| <p> On older systems, <code>ntpd</code> may not support the pool configuration described | ||
| above. The following should work with legacy <code>ntpd</code> versions: | ||
| </p> | ||
|
|
||
| [% INCLUDE "ntppool/use/sample-ntpq.html" %] | ||
|
|
||
| <p> | ||
| Looking up <code>2.pool.ntp.org</code> (or <code>0.pool.ntp.org</code>, | ||
| <code>1.pool.ntp.org</code>, etc) will usually return IP addresses for servers | ||
| in or close to your country. For most users this will give the best results.<br> | ||
| <strong>Note:</strong> For historical reasons only <code>2.pool.ntp.org</code> will | ||
| return both IPv4 <emphasize>and</emphasize> IPv6 addresses. The other names only | ||
| return IPv4 addresses. | ||
| </p> | ||
|
|
||
| <p>You can also use the <a href="/zone/@">continental zones</a> (For example | ||
| <a href="/zone/europe">europe</a>, | ||
| <a href="/zone/north-america">north-america</a>, | ||
| <a href="/zone/oceania">oceania</a> | ||
| or <a href="/zone/asia">asia</a>.pool.ntp.org), | ||
| and a country zone (like | ||
| ch.pool.ntp.org in Switzerland) - for all these zones, you can again use the 0, | ||
| 1 or 2 prefixes, like 0.ch.pool.ntp.org. Note, however, that the country zone | ||
| might not exist for your country, or might contain only one or two timeservers. | ||
| </p> | ||
| <p> | ||
| If you're using <b>a recent Windows version</b>, you can use the ntp | ||
| client that is built into the system. As administrator enter</p> | ||
| <pre class="code"> | ||
| w32tm /config /syncfromflags:manual /manualpeerlist:"2.pool.ntp.org 3.pool.ntp.org 0.pool.ntp.org 1.pool.ntp.org" | ||
| </pre> | ||
| <p> | ||
| at the command prompt. This will work on Windows 2003 and newer. If you use an | ||
| older version of windows you can try</p> | ||
| <p> | ||
| at the command prompt. This will work on Windows 2003 and newer. If you use an | ||
| older version of windows you can try</p> | ||
| <pre class="code"> | ||
| net time /setsntp:"2.pool.ntp.org 3.pool.ntp.org 0.pool.ntp.org" | ||
| </pre> | ||
| <p> | ||
| The same can be achieved by, as administrator, right-clicking the clock in the taskbar, | ||
| selecting 'Adjust Date/Time' and entering the server name in the 'Internet Time' tab. | ||
| </p> | ||
| <p> | ||
| The same can be achieved by, as administrator, right-clicking the clock in the taskbar, | ||
| selecting 'Adjust Date/Time' and entering the server name in the 'Internet Time' tab. | ||
| </p> | ||
|
|
||
| <p> | ||
| Meinberg made a port of the <a href="http://www.meinberg.de/english/sw/ntp.htm">ntp daemon for windows</a>. | ||
| </p> | ||
| <p> | ||
| Meinberg made a port of the <a href="http://www.meinberg.de/english/sw/ntp.htm">ntp daemon for windows</a>. | ||
| </p> | ||
|
|
||
| <p> | ||
| If your Windows system is part of a domain, you might not be able to independently update your computer time. | ||
| <p> | ||
| If your Windows system is part of a domain, you might not be able to independently update your computer time. | ||
|
|
||
| For more information about setting the time on windows, see <a href="http://technet.microsoft.com/en-us/library/cc773013%28WS.10%29.aspx">How Windows Time Service Works</a>. | ||
| </p> | ||
| For more information about setting the time on windows, see <a href="http://technet.microsoft.com/en-us/library/cc773013%28WS.10%29.aspx">How Windows Time Service Works</a>. | ||
| </p> | ||
| </div> | ||
|
|
||
| <div class="block"> | ||
| <h3 id="notes">Additional Notes</h3> | ||
|
|
||
| <p><span class="hook">Consider if the NTP Pool is appropriate | ||
| for your use</span>. If business, organization or human life | ||
| depends on having correct time or can be harmed by it being | ||
| wrong, you shouldn't "just get it off the internet". The NTP | ||
| Pool is generally very high quality, but it is a service run | ||
| by volunteers in their spare time. Please talk to your | ||
| equipment and service vendors about getting local and reliable | ||
| service setup for you. See also our <a href="/tos.html">terms | ||
| of service</a>. | ||
|
|
||
| We recommend time servers from | ||
| <a href="http://www.meinbergglobal.com/english/products/ntp-time-server.htm">Meinberg</a>, | ||
| but you can also find time servers from | ||
| <a href="https://endruntechnologies.com/products/ntp-time-servers">End Run</a>, | ||
| <a href="https://www.orolia.com/solution/timing-and-synchronization/">Orolia</a> | ||
| and many others. | ||
| </p> | ||
|
|
||
| <p><span class="hook">If you have a static IP address and a reasonable Internet connection</span> (bandwidth | ||
| is not so important, but it should be stable and not too highly loaded), please | ||
| consider donating your server to the server pool. It doesn't cost you more than | ||
| a few hundred bytes per second traffic, but you help this project survive. | ||
| Please <a href="/join.html">read the joining page</a> for more information. | ||
| </p> | ||
|
|
||
| <p><span class="hook">If your Internet provider has a timeserver</span>, or if you know of a good timeserver | ||
| near you, you should use that and not this list - you'll probably get better | ||
| time and you'll use fewer network resources. If you know only one timeserver | ||
| near you, you can of course use that and two from pool.ntp.org or so.</p> | ||
|
|
||
| <p><span class="hook">It can rarely happen that you are assigned the same timeserver twice</span> - | ||
| just restarting the ntp server usually solves this problem. If you | ||
| use a country zone, please note that it may be because there is only | ||
| one server known in the project - better use a continental zone in | ||
| that case. You can <a href="/zone">browse the zones</a> to see how | ||
| many servers we have in each zone.</p> | ||
|
|
||
| <p><span class="hook">Be friendly</span>. Many servers are provided by volunteers, and almost all time | ||
| servers are really file or mail or webservers which just happen to also run ntp. | ||
| So don't use more than four time servers in your configuration, and don't play | ||
| tricks with <code>burst</code> or <code>minpoll</code> - all you will gain is extra | ||
| load on the volunteer time servers.</p> | ||
|
|
||
| <p><span class="hook">Make sure that the <i>time zone configuration</i> of your computer is correct</span>. | ||
| ntpd itself does not do anything about the time zones, it just uses UTC | ||
| internally.</p> | ||
|
|
||
| <p><span class="hook">If you are synchronising a network to pool.ntp.org</span>, please set up one of your | ||
| computers as a time server and synchronize the other computers to that one. | ||
| (you'll have some reading to do - it's not difficult though. And there's always | ||
| the <a href="https://community.ntppool.org/">community</a> to help out.)</p> | ||
|
|
||
| <p class="thanks">At this point, I'd like to thank those donating their time and timeservers to | ||
| this network.</p> | ||
| <h3 id="notes">Additional Notes</h3> | ||
|
|
||
| <p><span class="hook">Consider if the NTP Pool is appropriate | ||
| for your use</span>. If business, organization or human life | ||
| depends on having correct time or can be harmed by it being | ||
| wrong, you shouldn't "just get it off the internet". The NTP | ||
| Pool is generally very high quality, but it is a service run | ||
| by volunteers in their spare time. Please talk to your | ||
| equipment and service vendors about getting local and reliable | ||
| service setup for you. See also our <a href="/tos.html">terms | ||
| of service</a>. | ||
|
|
||
| We recommend time servers from | ||
| <a href="http://www.meinbergglobal.com/english/products/ntp-time-server.htm">Meinberg</a>, | ||
| but you can also find time servers from | ||
| <a href="https://endruntechnologies.com/products/ntp-time-servers">End Run</a>, | ||
| <a href="https://www.orolia.com/solution/timing-and-synchronization/">Orolia</a> | ||
| and many others. | ||
| </p> | ||
|
|
||
| <p><span class="hook">If you have a static IP address and a reasonable Internet connection</span> (bandwidth | ||
| is not so important, but it should be stable and not too highly loaded), please | ||
| consider donating your server to the server pool. It doesn't cost you more than | ||
| a few hundred bytes per second traffic, but you help this project survive. | ||
| Please <a href="/join.html">read the joining page</a> for more information. | ||
| </p> | ||
|
|
||
| <p><span class="hook">If your Internet provider has a timeserver</span>, or if you know of a good timeserver | ||
| near you, you should use that and not this list - you'll probably get better | ||
| time and you'll use fewer network resources. If you know only one timeserver | ||
| near you, you can of course use that and two from pool.ntp.org or so.</p> | ||
|
|
||
| <p><span class="hook">It can rarely happen that you are assigned the same timeserver twice</span> - | ||
| just restarting the ntp server usually solves this problem. If you | ||
| use a country zone, please note that it may be because there is only | ||
| one server known in the project - better use a continental zone in | ||
| that case. You can <a href="/zone">browse the zones</a> to see how | ||
| many servers we have in each zone.</p> | ||
|
|
||
| <p><span class="hook">Be friendly</span>. Many servers are provided by volunteers, and almost all time | ||
| servers are really file or mail or webservers which just happen to also run ntp. | ||
| So don't use more than four time servers in your configuration, and don't play | ||
| tricks with <code>burst</code> or <code>minpoll</code> - all you will gain is extra | ||
| load on the volunteer time servers.</p> | ||
|
|
||
| <p><span class="hook">Make sure that the <i>time zone configuration</i> of your computer is correct</span>. | ||
| ntpd itself does not do anything about the time zones, it just uses UTC | ||
| internally.</p> | ||
|
|
||
| <p><span class="hook">If you are synchronising a network to pool.ntp.org</span>, please set up one of your | ||
| computers as a time server and synchronize the other computers to that one. | ||
| (you'll have some reading to do - it's not difficult though. And there's always | ||
| the <a href="https://community.ntppool.org/">community</a> to help out.)</p> | ||
|
|
||
| <p class="thanks">At this point, I'd like to thank those donating their time and timeservers to | ||
| this network.</p> | ||
| </div> |