1SYSTEMD-TIMESYNCD.SERVICE(8)systemd-timesyncd.servicSeYSTEMD-TIMESYNCD.SERVICE(8)
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NAME

6       systemd-timesyncd.service, systemd-timesyncd - Network Time
7       Synchronization
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SYNOPSIS

10       systemd-timesyncd.service
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12       /usr/lib/systemd/systemd-timesyncd
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DESCRIPTION

15       systemd-timesyncd is a system service that may be used to synchronize
16       the local system clock with a remote Network Time Protocol server. It
17       also saves the local time to disk every time the clock has been
18       synchronized and uses this to possibly advance the system realtime
19       clock on subsequent reboots to ensure it monotonically advances even if
20       the system lacks a battery-buffered RTC chip.
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22       The systemd-timesyncd service specifically implements only SNTP. This
23       minimalistic service will set the system clock for large offsets or
24       slowly adjust it for smaller deltas. More complex use cases are not
25       covered by systemd-timesyncd.
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27       The NTP servers contacted are determined from the global settings in
28       timesyncd.conf(5), the per-link static settings in .network files, and
29       the per-link dynamic settings received over DHCP. See
30       systemd.network(5) for more details.
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32       timedatectl(1)'s set-ntp command may be used to enable and start, or
33       disable and stop this service.
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35       timedatectl(1)'s timesync-status or show-timesync command can be used
36       to show the current status of this service.
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FILES

39       /var/lib/systemd/timesync/clock
40           The modification time of this file indicates the timestamp of the
41           last successful synchronization (or at least the systemd build
42           date, in case synchronization was not possible).
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44       /run/systemd/timesync/synchronized
45           A file that is touched on each successful synchronization, to
46           assist systemd-time-wait-sync and other applications to detecting
47           synchronization events.
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SEE ALSO

50       systemd(1), timesyncd.conf(5), systemd.network(5), systemd-
51       networkd.service(8), systemd-time-wait-sync.service(8), timedatectl(1),
52       localtime(5), hwclock(8)
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56systemd 243                                       SYSTEMD-TIMESYNCD.SERVICE(8)
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