systemd-timesyncd

SYSTEMD-TIMESYNCD.SERVICE(8systemd-timesyncd.serviSYSTEMD-TIMESYNCD.SERVICE(8)

NAME
       systemd-timesyncd.service, systemd-timesyncd - Network Time
       Synchronization

SYNOPSIS
       systemd-timesyncd.service

       /lib/systemd/systemd-timesyncd

DESCRIPTION
       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.

       timedatectl(1)'s timesync-status or show-timesync command can be used
       to show the current status of this service.

FILES
       /var/lib/systemd/timesync/clock
           The modification time of this file indicates the timestamp of the
           last successful synchronization (or at least the systemd build
           date, in case synchronization was not possible).

       /run/systemd/timesync/synchronized
           A file that is touched on each successful synchronization, to
           assist systemd-time-wait-sync and other applications to detecting
           synchronization events.

SEE ALSO
       systemd(1), timesyncd.conf(5), systemd.network(5), systemd-
       networkd.service(8), systemd-time-wait-sync.service(8), timedatectl(1),
       localtime(5), hwclock(8)

systemd 245                                       SYSTEMD-TIMESYNCD.SERVICE(8)