SYSTEMD-TIME-WAIT-SYNC(8)

💖 NAME 💖

systemd-time-wait-sync.service, systemd-time-wait-sync — bestie, this one just sits there and waits until the kernel's clock is actually synced. no cap.

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✨ SYNOPSIS ✨

systemd-time-wait-sync.service

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

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🕰️ DESCRIPTION 🕰️

okay so picture this: systemd-time-wait-sync is a system service whose whole entire job is delaying the start of units that are ordered after time-sync.target (peep systemd.special(7) for the deets on that one) until the system time has been synced up with an accurate remote reference time source by systemd-timesyncd.service. it's giving "we are NOT starting until the clock is correct." main character energy fr. 💅

systemd-timesyncd.service is the one that notifies systemd-time-wait-sync that synchronization went off successfully. slay.

systemd-time-wait-sync also tries to detect when the kernel marks the system clock as synchronized, but lowkey?? that detection is not reliable 😭 and it's only intended as a fallback, purely for compatibility with alternative NTP services that can be used to sync time — think ntpd, chronyd, that whole friend group. so it's the understudy, not the lead. 🎀

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📁 FILES 📁

• /run/systemd/timesync/synchronized — bestie, if this file exists, it's telling this service that the system clock has been synchronized. its presence is literally the signal. iconic. ✨

Added in version 239.

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👀 SEE ALSO 👀

• systemd(1)
• systemd.special(7)
• systemd-timesyncd.service(8)

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and that's the whole page, bestie — go forth and let your clock sync before you start anything, iykyk 🦋

this lil rewrite rode in with systemd 262.1 — version vibes only, no date on the tin 🌸 stay synced, love u, bye 💜