SYSTEMD-TIMESYNCD.SERVICE(8)stemd-timesyncd.serviceTEMD-TIMESYNCD.SERVICE(8)
systemd-timesyncd.service, systemd-timesyncd - Network Time
Synchronization
systemd-timesyncd.service
/usr/lib/systemd/systemd-timesyncd
systemd-timesyncd is a system service that may be used to synchronize
the local system clock with a remote Network Time Protocol server. It
also saves the local time to disk every time the clock has been
synchronized and uses this to possibly advance the system realtime
clock on subsequent reboots to ensure it monotonically advances even
if the system lacks a battery-buffered RTC chip.
The systemd-timesyncd 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 systemd-timesyncd.
The NTP servers contacted are determined from the global settings in
timesyncd.conf(5), the per-link static settings in .network files,
and the per-link dynamic settings received over DHCP. See
systemd.network(5) for more details.
timedatectl(1)'s set-ntp command may be used to enable and start, or
disable and stop this service.
/var/lib/systemd/clock
This file contains the timestamp of the last successful
synchronization.
systemd(1), timesyncd.conf(5), systemd.network(5),
systemd-networkd.service(8), timedatectl(1), localtime(5), hwclock(8)
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project. Information about the project can be found at
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systemd 234 SYSTEMD-TIMESYNCD.SERVICE(8)
Pages that refer to this page: timedatectl(1), systemd.network(5), timesyncd.conf(5), systemd.directives(7), systemd.index(7)