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[MAN] systemd-timesyncd

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SYSTEMD-TIMESYNCD.SERVICE

Section: systemd-timesyncd.service (8)
Updated:
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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.  

FILES

/var/lib/systemd/timesync/clock

This file contains the timestamp of the last successful synchronization.
 

SEE ALSO

systemd(1), timesyncd.conf(5), systemd.network(5), systemd-networkd.service(8), timedatectl(1), localtime(5), hwclock(8)


 

Index

NAME
SYNOPSIS
DESCRIPTION
FILES
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 04:46:03 GMT, September 16, 2022

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