Manpages - systemd-time-wait-sync.service.8

systemd-time-wait-sync.service, systemd-time-wait-sync - Wait until kernel time is synchronized

systemd-time-wait-sync.service

/usr/lib/systemd/systemd-time-wait-sync

systemd-time-wait-sync is a system service that delays the start of units that are ordered after time-sync.target (see *systemd.special*(7) for details) until the system time has been synchronized with an accurate remote reference time source by systemd-timesyncd.service.

systemd-timesyncd.service notifies systemd-time-wait-sync about successful synchronization. systemd-time-wait-sync also tries to detect when the kernel marks the system clock as synchronized, but this detection is not reliable and is intended only as a fallback for compatibility with alternative NTP services that can be used to synchronize time (e.g., ntpd, chronyd).

/run/systemd/timesync/synchronized

The presence of this file indicates to this service that the system clock has been synchronized.

*systemd*(1), *systemd.special*(7), *systemd-timesyncd.service*(8),