<?xml version='1.0'?> <!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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-<!ENTITY % entities SYSTEM "custom-entities.ent" >
-%entities;
-]>
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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+ SPDX-License-Identifier: LGPL-2.1+
+
This file is part of systemd.
Copyright 2014 Kay Sievers
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
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<refentry id="systemd-timesyncd.service" conditional='ENABLE_TIMESYNCD'>
<refsynopsisdiv>
<para><filename>systemd-timesyncd.service</filename></para>
- <para><filename>&rootlibexecdir;/systemd-timesyncd</filename></para>
+ <para><filename>/usr/lib/systemd/systemd-timesyncd</filename></para>
</refsynopsisdiv>
<refsect1>
reboots to ensure it monotonically advances even if the system
lacks a battery-buffered RTC chip.</para>
+ <para>The <filename>systemd-timesyncd</filename> service
+ specifically implements only SNTP. This minimalistic
+ service will set the system clock for large offsets or
+ slowly adjust it for smaller deltas. More complex use
+ cases are not covered by <filename>systemd-timesyncd</filename>.</para>
+
<para>The NTP servers contacted are determined from the global
settings in
<citerefentry><refentrytitle>timesyncd.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
files, and the per-link dynamic settings received over DHCP. See
<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for more details.</para>
+
+ <para><citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s
+ <command>set-ntp</command> command may be used to enable and
+ start, or disable and stop this service.</para>
</refsect1>
<refsect1>
<variablelist>
<varlistentry>
- <term><filename>/var/lib/systemd/clock</filename></term>
+ <term><filename>/var/lib/systemd/timesync/clock</filename></term>
<listitem>
- <para>This file contains the timestamp of last successful
+ <para>This file contains the timestamp of the last successful
synchronization.</para>
</listitem>
</varlistentry>