673 lines
8.5 KiB
HTML
673 lines
8.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>Managing Accurate Date and Time</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="NEXT"
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TITLE="Why do We Need a Precise Clock?"
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HREF="why.html"></HEAD
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><BODY
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CLASS="article"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="ARTICLE"
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><DIV
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CLASS="TITLEPAGE"
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><H1
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CLASS="title"
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><A
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NAME="AEN2"
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>Managing Accurate Date and Time</H1
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><DIV
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CLASS="authorgroup"
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><A
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NAME="AEN7"
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></A
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><H3
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CLASS="author"
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><A
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NAME="AEN8"
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>Avi Alkalay</A
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></H3
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><P
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CLASS="othercredit"
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><B
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>Brad Knowles - </B
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><SPAN
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CLASS="contrib"
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>Suggestion to use pool.ntp.org and NTP's stratum 2 public time servers</SPAN
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><P
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CLASS="othercredit"
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><B
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>Kent Borg - </B
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><SPAN
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CLASS="contrib"
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>Suggestion to use ntpq instead of ntpdc</SPAN
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></P
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><P
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CLASS="othercredit"
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><B
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>Yura Moron - </B
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><SPAN
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CLASS="contrib"
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>Good explanations on ntpq and ntpdc info</SPAN
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></P
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><P
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CLASS="othercredit"
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><B
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>Takeo Nakano - </B
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></P
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><P
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CLASS="othercredit"
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><B
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>SHAKI - </B
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></P
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><P
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CLASS="othercredit"
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><B
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>Mihaly Gyulai - </B
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></P
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><P
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CLASS="othercredit"
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><B
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>Philippe Wautelet - </B
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></P
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><P
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CLASS="othercredit"
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><B
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>Kemal Ökmen - </B
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></P
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></DIV
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><P
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CLASS="copyright"
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>Copyright © 2002,2003,2004,2005 Avi Alkalay</P
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><P
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CLASS="pubdate"
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>2005-11-18<BR></P
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><DIV
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CLASS="revhistory"
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><TH
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VALIGN="TOP"
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><B
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>Revision History</B
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 2005-11-18</TD
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><TD
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ALIGN="LEFT"
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>18 Nov 2005</TD
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><TD
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ALIGN="LEFT"
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>Revised by: Avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Included link to turkish translation</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 2005-10-12</TD
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><TD
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>12 Oct 2005</TD
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><TD
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ALIGN="LEFT"
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>Revised by: Avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>The Brazil zic file is now external and updated</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 2005-05-03</TD
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><TD
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ALIGN="LEFT"
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>03 May 2005</TD
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><TD
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ALIGN="LEFT"
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>Revised by: Avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Included link to french translation</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 1.0.8</TD
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><TD
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ALIGN="LEFT"
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>2004-10-29</TD
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><TD
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ALIGN="LEFT"
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>Revised by: Mihaly Gyulai</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Hungarian translation, the chorny section and the very first section</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 1.0.7</TD
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><TD
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ALIGN="LEFT"
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>9 Jul 2004</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Disclaimer near to license, to let people know they can translate without asking permission.Small fixes in some phrases.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 1.0.6</TD
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><TD
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ALIGN="LEFT"
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>25 Feb 2004</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Included credits and link to russian translation.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 1.0.5</TD
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><TD
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ALIGN="LEFT"
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>05 Jul 2003</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Changed public time servers list URL. Added pool.ntp.org.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 1.0.4</TD
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><TD
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ALIGN="LEFT"
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>21 Dec 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Added japanese translation link and credits.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 1.0.3</TD
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><TD
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ALIGN="LEFT"
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>24 Aug 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Fixed wrong screen and programlisting widths.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 1.0.2</TD
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><TD
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>04 Aug 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Link to public time servers page.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 1.0.1</TD
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><TD
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ALIGN="LEFT"
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>07 May 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Final XML conversion. Files reorganization.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 1.0</TD
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><TD
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>28 Apr 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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COLSPAN="3"
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>Finalized image.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 0.8</TD
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><TD
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>27 Apr 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Switched from ntpdc example to ntpq, based on contributions.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 0.8.1</TD
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><TD
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ALIGN="LEFT"
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>20 Apr 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Improved graphic. Links to other doc locations.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 0.8</TD
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><TD
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ALIGN="LEFT"
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>14 Apr 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Beter tunning of NTP graphic.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 0.76</TD
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><TD
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>13 Apr 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Inclusion of architecture graphic.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 0.75</TD
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><TD
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>10 Apr 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Spell checked. Using DocBook XSLT 1.50.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 0.65</TD
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><TD
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>31 Mar 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Upgraded to XML 4.1.2 DocBook format</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 0.6</TD
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><TD
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>29 Mar 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>Finished timezone mechanism on Linux. Created appendix. Now only drawings are needed.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 0.4</TD
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><TD
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>24 Mar 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>All skeleton defined. All command examples written.</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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>Revision 0.2</TD
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><TD
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>19 Mar 2002</TD
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><TD
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ALIGN="LEFT"
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>Revised by: avi</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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COLSPAN="3"
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>First DocBook version</TD
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></TR
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></TABLE
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></DIV
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><HR></DIV
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><DIV
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CLASS="TOC"
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><DL
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><DT
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><B
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>Table of Contents</B
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></DT
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><DT
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>1. <A
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HREF="why.html"
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>Why do We Need a Precise Clock?</A
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></DT
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><DD
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><DL
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><DT
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>1.1. <A
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HREF="why.html#why.pcclock"
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>On What Factors Does the Hardware-Clock Depend?</A
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></DT
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></DL
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></DD
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><DT
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>2. <A
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HREF="time.html"
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>Computer Global Date and Time Concept</A
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></DT
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><DT
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>3. <A
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HREF="tz.html"
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>What are Time Zones?</A
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></DT
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><DD
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><DL
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><DT
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>3.1. <A
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HREF="tz.html#tz.dst"
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>Daylight Savings Time</A
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></DT
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><DT
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>3.2. <A
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HREF="tz.html#tz.examples"
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>Time Zones Examples</A
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></DT
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><DT
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>3.3. <A
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HREF="tz.html#tz.linux"
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>Time Zone Mechanism on Linux</A
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></DT
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></DL
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></DD
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><DT
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>4. <A
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HREF="set.html"
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>The Correct Settings for Your Linux Box</A
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></DT
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><DD
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><DL
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><DT
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>4.1. <A
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HREF="set.html#set.tz"
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>Setting Time Zone</A
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></DT
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><DT
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>4.2. <A
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HREF="set.html#set.hwclock"
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>Setting the Hardware Clock</A
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></DT
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></DL
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></DD
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><DT
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>5. <A
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HREF="ntp.html"
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>Accurate Global Time Synchronization</A
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></DT
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><DD
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><DL
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><DT
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>5.1. <A
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HREF="ntp.html#ntp.ntp"
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><SPAN
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CLASS="acronym"
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>NTP</SPAN
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>: The Network Time Protocol</A
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></DT
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><DT
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>5.2. <A
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HREF="ntp.html#ntp.arch"
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>Building a Simple Time Synchronization Architecture</A
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></DT
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><DT
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>5.3. <A
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HREF="ntp.html#ntp.configs"
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><SPAN
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CLASS="acronym"
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>NTP</SPAN
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> Configurations</A
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></DT
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><DT
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>5.4. <A
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HREF="ntp.html#ntp.watch"
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>Watching Your Box Synchronizing</A
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></DT
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><DT
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>5.5. <A
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HREF="ntp.html#ntp.boot"
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>Configure to Automatically Run <SPAN
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CLASS="acronym"
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>NTP</SPAN
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> at Boot</A
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></DT
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></DL
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></DD
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><DT
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>6. <A
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HREF="ntp.chrony.html"
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>Precise Time with the <B
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CLASS="command"
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>chrony</B
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> Program</A
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></DT
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><DD
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><DL
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><DT
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>6.1. <A
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HREF="ntp.chrony.html#ntp.chrony.diff"
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>How <B
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CLASS="command"
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>chrony</B
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> Differs from the <B
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CLASS="command"
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>ntp</B
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> Suite?</A
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></DT
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><DT
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>6.2. <A
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HREF="ntp.chrony.html#ntp.chrony.how"
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>How to Use <B
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CLASS="command"
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>chrony</B
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>?</A
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></DT
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></DL
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></DD
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><DT
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>A. <A
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HREF="about.html"
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>About this Document</A
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></DT
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></DL
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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> </TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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><A
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HREF="why.html"
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ACCESSKEY="N"
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>Next</A
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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><TD
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WIDTH="34%"
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ALIGN="center"
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> </TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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>Why do We Need a Precise Clock?</TD
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