source: basicnet/netprogs/ntp/ntp-config.xml@ e8889a20

10.0 10.1 11.0 6.0 6.1 6.2 6.2.0 6.2.0-rc1 6.2.0-rc2 6.3 6.3-rc1 6.3-rc2 6.3-rc3 7.10 7.4 7.5 7.6 7.6-blfs 7.6-systemd 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 9.0 9.1 basic bdubbs/svn elogind gnome kde5-13430 kde5-14269 kde5-14686 ken/refactor-virt krejzi/svn lazarus nosym perl-modules qt5new systemd-11177 systemd-13485 trunk v5_1 v5_1-pre1 xry111/git-date xry111/git-date-for-trunk xry111/git-date-test
Last change on this file since e8889a20 was e8889a20, checked in by Igor Živković <igor@…>, 18 years ago

encapsulated NTP config file in a cat > << EOF

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@1915 af4574ff-66df-0310-9fd7-8a98e5e911e0

  • Property mode set to 100644
File size: 2.6 KB
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1<sect2>
2<title>Configuring <application><acronym>NTP</acronym></application></title>
3
4<sect3><title>Config files</title>
5<para><filename>/etc/ntp.conf</filename></para>
6</sect3>
7
8<sect3><title>Configuration Information</title>
9
10<para>The following configuration file defines various <acronym>NTP</acronym>
11servers to use with the primary server designated with the prefer tag. It also
12creates a drift file where <command>ntpd</command> stores the frequency
13offset. Since the documentation included with the package is sparse,
14visit the <acronym>NTP</acronym> website at
15<ulink url="http://www.ntp.org/"/> for more information.</para>
16
17<screen><userinput><command>cat &gt; /etc/ntp.conf &lt;&lt; "EOF"</command>
18server time-a.nist.gov prefer
19server time-b.nist.gov
20server tick.usno.navy.mil
21driftfile /var/cache/ntp.drift
22<command>EOF</command></userinput></screen>
23</sect3>
24
25<sect3><title>Synchronizing the time</title>
26
27<para>There are two options. Option one is to use run <command>ntpd</command>
28continuously and allow it to synchronize the time in a gradual manner. The other
29option is to run <command>ntpd</command> periodically (using cron)
30and update the time each time <command>ntpd</command> is scheduled.</para>
31
32<para>If you choose Option one, then create the bootscript
33<filename>/etc/rc.d/init.d/ntp</filename> and put the start and
34stop symlinks:</para>
35
36<screen><userinput><command>cat &gt; /etc/rc.d/init.d/ntp &lt;&lt; "EOF"</command>
37#!/bin/sh
38# Begin $rc_base/init.d/ntp
39. /etc/sysconfig/rc
40. $rc_functions
41case "$1" in
42 start)
43 echo "Starting ntpd..."
44 loadproc ntpd
45 ;;
46 stop)
47 echo "Stopping ntpd..."
48 killproc ntpd
49 ;;
50 restart)
51 $0 stop
52 sleep 1
53 $0 start
54 ;;
55 status)
56 statusproc ntpd
57 ;;
58 *)
59 echo "Usage: $0 {start|stop|restart|status}"
60 exit 1
61 ;;
62esac
63# End $rc_base/init.d/ntp
64<command>EOF
65chmod 755 /etc/rc.d/init.d/ntp &amp;&amp;
66cd /etc/rc.d/init.d &amp;&amp;
67ln -sf ../init.d/ntp ../rc0.d/K46ntp &amp;&amp;
68ln -sf ../init.d/ntp ../rc1.d/K46ntp &amp;&amp;
69ln -sf ../init.d/ntp ../rc2.d/K46ntp &amp;&amp;
70ln -sf ../init.d/ntp ../rc3.d/S26ntp &amp;&amp;
71ln -sf ../init.d/ntp ../rc4.d/S26ntp &amp;&amp;
72ln -sf ../init.d/ntp ../rc5.d/S26ntp &amp;&amp;
73ln -sf ../init.d/ntp ../rc6.d/K46ntp</command></userinput></screen>
74
75<para>If you prefer to start ntpd periodically, add the following command to
76the root's <filename>crontab</filename>:</para>
77<screen><userinput>ntpd -q</userinput></screen>
78
79</sect3>
80
81</sect2>
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