Differences between revisions 12 and 13
Revision 12 as of 2010-11-16 12:21:31
Size: 2423
Comment: ntp-simple is no longer in lenny + new Public Time Servers Pool
Revision 13 as of 2010-11-17 02:06:53
Size: 1704
Editor: GeoffSimmons
Comment: ntp-server was merged into ntp at version 1:4.2.2+dfsg-1 (2006); ntpdate is deprecated (BTS #514318) and unnecessary (BTS #319776); formatting.
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||<tablewidth="100%" tablestyle=""style="border: 0px hidden ;">~-[[DebianWiki/EditorGuide#translation|Translation(s)]]: English - [[it/NTP|Italiano]] -~ ||<style="border: 0px hidden ; text-align: right;"> (!) [[/Discussion]] || ~-[[DebianWiki/EditorGuide#translation|Translation(s)]]: English - [[it/NTP|Italiano]]-~
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 Network Time Protocol, This will keep you system date with exact match to actual date. = NTP =
Network Time Protocol. This will keep you system date with exact match to actual date.
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= Install and Configure = == Install and Configure ==
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aptitude install ntpdate
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== Add your time server ==
 * [Optional] If you would like to add a server that is closer to you and you know its address. You could type:
{{{
/etc/init.d/ntp-server stop
ntpdate clock.fmt.he.net
ntpdate ntp1.tummy.com
/etc/init.d/ntp-server start
}}}

=== Using The Cron ===
To configure the system to synchronize the clock with an Internet Time Server every morning, add the following entry to the {{{/etc/crontab}}} configuration file:

{{{
#m h dom mon dow user command
57 5 * * * root /usr/sbin/ntpdate-debian > /dev/null
}}}

=== Public Internet Time Servers ===
== Public Internet Time Servers ==
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 . CategoryNetwork CategoryNetwork

Translation(s): English - Italiano


NTP

Network Time Protocol. This will keep you system date with exact match to actual date.

Install and Configure

  • Type date to see current date and time

date
  • Install NTP

aptitude install ntp
  • Done.
  • Type ntpq -p to see servers you are syncing with.

  • Type date again to see if the time changed. You time should be synced in a next minute.

  • Done.

Troubleshooting

  • If you run ntpq -p and you get

No association ID's returned
  • Run

dpkg-reconfigure ntp
  • And then again:

ntpq -p

     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 ntp.pbx.org     xx.xxx.xxx.xxx   2 u    -   64    1   33.763  1799619   1.054
 xray.metadom.co xx.xxx.xxx.xxx   2 u    1   64    1   40.367  1799619   0.001
 hydrogen.cert.u xx.xxx.xxx.xxx   2 u    -   64    1   64.740  1799619   0.001
 mirror          .INIT.          16 u    -   64    0    0.000    0.000   0.001

Public Internet Time Servers

  • pool.ntp.org - This points to a random worldwide time server.

  • europe.pool.ntp.org - This points to a random European time server.

  • uk.pool.ntp.org - This points to a random United Kingdom based time server.


CategoryNetwork