ืคึผืจืึธื”ืึธืกื˜ืขืจ > ื‘ืœืึธื’ > ืึทื“ืžื™ื ื™ืกื˜ืจืึทืฆื™ืข > ืœื™ื ื•ืงืก ืฆื™ื™ื˜ ืกื™ื ื’ืงืจืึทื ืึทื–ื™ื™ืฉืึทืŸ: NTP, Chrony ืื•ืŸ systemd-timesyncd

ืœื™ื ื•ืงืก ืฆื™ื™ื˜ ืกื™ื ื’ืงืจืึทื ืึทื–ื™ื™ืฉืึทืŸ: NTP, Chrony ืื•ืŸ systemd-timesyncd

ืœื™ื ื•ืงืก ืฆื™ื™ื˜ ืกื™ื ื’ืงืจืึทื ืึทื–ื™ื™ืฉืึทืŸ: NTP, Chrony ืื•ืŸ systemd-timesyncd
ืจื•ื‘ึฟ ืžืขื ื˜ืฉืŸ ื”ืึทืœื˜ืŸ ืฉืคึผื•ืจ ืคื•ืŸ ืฆื™ื™ื˜. ืžื™ืจ ืฉื˜ื™ื™ืขืŸ ืื•ื™ืฃ ืื™ืŸ ืฆื™ื™ื˜ ืฆื• ืคืึทืจืขื ื“ื™ืงืŸ ืื•ื ื“ื–ืขืจ ืžืึธืจื’ืŸ ืจื™ื˜ืฉื•ืึทืœื– ืื•ืŸ ื’ื™ื™ืŸ ืฆื• ืึทืจื‘ืขื˜, ื ืขืžืขืŸ ืึท ืœืึธื ื˜ืฉ ื‘ืจืขื›ืŸ, ื˜ืจืขืคืŸ ืคึผืจื•ื™ืขืงื˜ ื“ืขื“ืœื™ื™ื ื–, ืคื™ื™ึทืขืจืŸ ื“ื™ื™ืŸ ื’ืขื‘ื•ืจืกื˜ืึธื’ ืื•ืŸ ื”ืึธืœื™ื“ื™ื™ึทืก, ื‘ืึธืจื“ ืึท ืคืœืึทืš, ืื•ืŸ ืึทื–ื•ื™ ืื•ื™ืฃ.

ื“ืขืจืฆื•: ืขื˜ืœืขื›ืข ืคื•ืŸ โ€‹โ€‹ืื•ื ื“ื– ื–ืขื ืขืŸ ืึทื‘ืกืขืกื˜ ืžื™ื˜ ืฆื™ื™ื˜. ืžื™ื™ึทืŸ ื•ื•ืึทืš ืื™ื– ืคึผืึทื•ืขืจื“ ื“ื•ืจืš ื–ื•ื  - ืขื ืขืจื’ื™ืข ืื•ืŸ ื‘ืึทืงื•ืžืขืŸ ืคึผื™ื ื˜ืœืขืš ืฆื™ื™ื˜ ืคื•ืŸ ื“ื™ ื ืึทืฉืึทื ืึทืœ ืื™ื ืกื˜ื™ื˜ื•ื˜ ืคื•ืŸ ืกื˜ืึทื ื“ืึทืจื“ืก ืื•ืŸ ื˜ืขื›ื ืึธืœืึธื’ื™ืข (ื ื™ืกื˜) ืฆื• ืคืึธืจื˜ ืงืึธืœืœื™ื ืก, ืงืึธืœืึธืจืึทื“ืึธ ื“ื•ืจืš ืœืึธื ื’ื•ื•ืึทื•ื•ืข ืจืึทื“ื™ืึธ ื•ื•ื•ื•ื•ื•ื‘. ื“ื™ ืฆื™ื™ื˜ ืกื™ื’ื ืึทืœื– ื–ืขื ืขืŸ ืกื™ื ื’ืงืจืึทื ื™ื™ื–ื“ ืžื™ื˜ ื“ื™ ืึทื˜ืึธืžื™ืฉืข ื–ื™ื™ื’ืขืจ, ืื•ื™ืš ืœื™ื’ืŸ ืื™ืŸ ืคืึธืจื˜ ืงืึธืœืœื™ื ืก. ืžื™ื™ึทืŸ ืคื™ื˜ื‘ื™ื˜ ืื™ื– ืกื™ื ืกื™ื ื’ ืžื™ื˜ ืžื™ื™ืŸ ื˜ืขืœืขืคืึธืŸ ื•ื•ืึธืก ืื™ื– ืกื™ื ืกื™ื ื’ ืžื™ื˜ ื“ื™ ืกืขืจื•ื•ืขืจ ื ื˜ืคึผ, ื•ื•ืึธืก ืขื ื“ืœืขืš ืกื™ื ื’ืงืจืึทื ื™ื™ื–ื™ื– ืžื™ื˜ ื“ื™ ืึทื˜ืึธืžื™ืฉืข ื–ื™ื™ื’ืขืจ.

ื“ื™ื•ื•ื™ื™ืกืึทื– ื”ืึทืœื˜ืŸ ืฉืคึผื•ืจ ืคื•ืŸ ืฆื™ื™ื˜ ืื•ื™ืš

ืขืก ื–ืขื ืขืŸ ืคื™ืœืข ืกื™ื‘ื•ืช ื•ื•ืึธืก ืื•ื ื“ื–ืขืจ ื“ืขื•ื•ื™ืกืขืก ืื•ืŸ ืงืึธืžืคึผื™ื•ื˜ืขืจืก ื“ืึทืจืคึฟืŸ ืคึผื™ื ื˜ืœืขืš ืฆื™ื™ื˜. ืคึฟืึทืจ ื‘ื™ื™ึทืฉืคึผื™ืœ, ืื™ืŸ ื‘ืึทื ืงื™ื ื’, ืœืึทื’ืขืจ ืžืืจืงืคืœืขืฆืขืจ ืื•ืŸ ืื ื“ืขืจืข ืคื™ื ืึทื ืฆื™ืขืœ ื’ืขืฉืขืคื˜ืŸ, ื˜ืจืึทื ื–ืึทืงืฉืึทื ื– ืžื•ื–ืŸ ื–ื™ื™ืŸ ื“ื•ืจื›ื’ืขืงืึธื›ื˜ ืื™ืŸ ื“ื™ ื’ืขื”ืขืจื™ืง ืกื“ืจ, ืื•ืŸ ืคึผื™ื ื˜ืœืขืš ืฆื™ื™ื˜ ืกื™ืงื•ื•ืึทื ืกื™ื– ื–ืขื ืขืŸ ืงืจื™ื˜ื™ืฉ ืคึฟืึทืจ ื“ืขื.

ืื•ื ื“ื–ืขืจ ืคืึธื ืขืก, ื˜ืึทื‘ืœืึทืฅ, ืงืึทืจืก, ื’ืคึผืก ืกื™ืกื˜ืขืžืขืŸ ืื•ืŸ ืงืึธืžืคึผื™ื•ื˜ืขืจืก ืึทืœืข ื“ืึทืจืคืŸ ืคึผื™ื ื˜ืœืขืš ืฆื™ื™ื˜ ืื•ืŸ ื“ืึทื˜ืข ืกืขื˜ื˜ื™ื ื’ืก. ืื™ืš ื•ื•ื™ืœืŸ ื“ื™ ื–ื™ื™ื’ืขืจ ืื•ื™ืฃ ืžื™ื™ืŸ ืงืึธืžืคึผื™ื•ื˜ืขืจ ืก ื“ืขืกืงื˜ืึทืคึผ ืฆื• ื•ื•ื™ื™ึทื–ืŸ ื“ื™ ืจื™ื›ื˜ื™ืง ืฆื™ื™ื˜. ืื™ืš ื•ื•ื™ืœืŸ ืจื™ืžื™ื™ื ื“ืขืจื– ืฆื• ื“ืขืจืฉื™ื™ึทื ืขืŸ ืื•ื™ืฃ ืžื™ื™ืŸ ื”ื™ื’ืข ืงืึทืœืขื ื“ืึทืจ ืื™ืŸ ื“ื™ ืจืขื›ื˜ ืฆื™ื™ื˜. ื“ื™ ืจื™ื›ื˜ื™ืง ืฆื™ื™ื˜ ืื•ื™ืš ื™ื ืฉื•ืจื– ืึทื– ื“ื™ Cron ืื•ืŸ Systemd ื“ื–ืฉืึธื‘ืก ืœื•ื™ืคืŸ ืื™ืŸ ื“ื™ ืจื™ื›ื˜ื™ืง ืฆื™ื™ื˜.

ื“ืึทื˜ืข ืื•ืŸ ืฆื™ื™ื˜ ื–ืขื ืขืŸ ืื•ื™ืš ื•ื•ื™ื›ื˜ื™ืง ืคึฟืึทืจ ืœืึธื’ื™ื ื’, ืึทื–ื•ื™ ืขืก ืื™ื– ืึท ื‘ื™ืกืœ ื’ืจื™ื ื’ืขืจ ืฆื• ื’ืขืคึฟื™ื ืขืŸ ื–ื™ื›ืขืจ ืœืึธื’ืก ื‘ืื–ื™ืจื˜ ืื•ื™ืฃ ื“ืึทื˜ืข ืื•ืŸ ืฆื™ื™ื˜. ืคึฟืึทืจ ื‘ื™ื™ึทืฉืคึผื™ืœ, ืื™ืš ืึทืžืึธืœ ื’ืขืืจื‘ืขื˜ ืื™ืŸ DevOps (ืขืก ืื™ื– ื ื™ืฉื˜ ื’ืขืจื•ืคืŸ ืึทื– ืื™ืŸ ื“ืขืจ ืฆื™ื™ื˜) ืื•ืŸ ืื™ื– ื’ืขื•ื•ืขืŸ ื‘ืึทืฉื˜ืขื˜ื™ืงืŸ ืึทืŸ E- ื‘ืจื™ื•ื• ืกื™ืกื˜ืขื ืื™ืŸ ื“ื™ ืฉื˜ืึทื˜ ืคื•ืŸ ืฆืคื•ืŸ ืงืืจืืœื™ื™ื ืข. ืžื™ืจ ื’ืขื•ื•ื™ื™ื ื˜ ืฆื• ืคึผืจืึธืฆืขืก ืื™ื‘ืขืจ 20 ืžื™ืœื™ืึธืŸ ื™ืžื™ื™ืœื– ืคึผืขืจ ื˜ืึธื’. ื˜ืจืึทืงื™ื ื’ E- ืคึผืึธืกื˜ ื“ื•ืจืš ืึท ืกืขืจื™ืข ืคื•ืŸ โ€‹โ€‹โ€‹โ€‹ ืกืขืจื•ื•ืขืจืก, ืึธื“ืขืจ ื“ื™ื˜ืขืจืžืึทื ื™ื ื’ ื“ื™ ืคึผื™ื ื˜ืœืขืš ืกื™ืงื•ื•ืึทื ืก ืคื•ืŸ ื’ืขืฉืขืขื ื™ืฉืŸ ืžื™ื˜ ืงืœืึธืฅ ื˜ืขืงืขืก ืื•ื™ืฃ ื’ืขืึธื’ืจืึทืคื™ืงืึทืœืœื™ ื“ื™ืกืคึผืขืจืกื˜ ืžื—ื ื•ืช, ืงืขื ืขืŸ ื–ื™ื™ืŸ ืคื™ืœ ื’ืจื™ื ื’ืขืจ ืื•ื™ื‘ ื“ื™ ืจื™ืกืคึผืขืงื˜ื™ื•ื• ืงืึธืžืคึผื™ื•ื˜ืขืจืก ื–ืขื ืขืŸ ืกื™ื ื’ืงืจืึทื ื™ื™ื–ื“ ืื™ืŸ ืฆื™ื™ื˜.

ืื™ื™ืŸ ืžืึธืœ - ืคื™ืœืข ืฉืขื”

ืœื™ื ื•ืงืก ืžื—ื ื•ืช ืžื•ื–ืŸ ื ืขืžืขืŸ ืื™ืŸ ื—ืฉื‘ื•ืŸ ืึทื– ืขืก ืื™ื– ืึท ืกื™ืกื˜ืขื ืฆื™ื™ื˜ ืื•ืŸ ืึท RTC ืฆื™ื™ื˜. RTC (Real Time Clock) ืื™ื– ืึท ื‘ื™ืกืœ ืžืึธื“ื ืข ืื•ืŸ ื ื™ืฉื˜ ื–ื™ื™ืขืจ ืคึผื™ื ื˜ืœืขืš ื ืึธืžืขืŸ ืคึฟืึทืจ ืึท ื™ื™ึทื–ื ื•ื•ืึทืจื’ ื–ื™ื™ื’ืขืจ.

ื“ื™ ื™ื™ึทื–ื ื•ื•ืึทืจื’ ื–ื™ื™ื’ืขืจ ืœื•ื™ืคื˜ ืงืึทื ื˜ื™ื ื™ื•ืึทืกืœื™ ืืคื™ืœื• ื•ื•ืขืŸ ื“ื™ ืงืึธืžืคึผื™ื•ื˜ืขืจ ืื™ื– ืื•ื™ืกื’ืขื“ืจื™ื™ื˜ ืึทื•ื•ืขืง, ื ื™ืฆืŸ ื“ื™ ื‘ืึทื˜ืึทืจื™ื™ืข ืื•ื™ืฃ ื“ื™ ืžืึธื˜ื”ืขืจื‘ืึธืึทืจื“. ื“ื™ ื”ื•ื™ืคึผื˜ ืคึฟื•ื ืงืฆื™ืข ืคื•ืŸ โ€‹โ€‹ื“ื™ RTC ืื™ื– ืฆื• ืงืจืึธื ืฆื™ื™ื˜ ื•ื•ืขืŸ ืึท ืคึฟืึทืจื‘ื™ื ื“ื•ื ื’ ืฆื• ืึท ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจ ืื™ื– ื ื™ืฉื˜ ื‘ื ื™ืžืฆื. ืื™ืŸ ื“ื™ ื˜ืขื’ ื•ื•ืขืŸ ืขืก ืื™ื– ื’ืขื•ื•ืขืŸ ืื•ืžืžืขื’ืœืขืš ืฆื• ืคืึทืจื‘ื™ื ื“ืŸ ืฆื• ืึท ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจ ืื™ื‘ืขืจ ื“ื™ ืื™ื ื˜ืขืจื ืขื˜, ื™ืขื“ืขืจ ืงืึธืžืคึผื™ื•ื˜ืขืจ ื”ืื˜ ืฆื• ื”ืึธื‘ืŸ ืึท ืคึผื™ื ื˜ืœืขืš ืื™ื ืขืจืœืขื›ืขืจ ื–ื™ื™ื’ืขืจ. ืึทืคึผืขืจื™ื™ื˜ื™ื ื’ ืกื™ืกื˜ืขืžืขืŸ ื”ืึธื‘ืŸ ืฆื• ืึทืงืกืขืก ื“ื™ RTC ืื™ืŸ ืฉื˜ื™ื•ื•ืœ ืฆื™ื™ื˜ ืื•ืŸ ื“ืขืจ ื‘ืึทื ื™ืฆืขืจ ื”ืื˜ ืฆื• ืžืึทื ื™ื•ืึทืœื™ ืฉื˜ืขืœืŸ ื“ื™ ืกื™ืกื˜ืขื ืฆื™ื™ื˜ ื ื™ืฆืŸ ื“ื™ ื‘ื™ื™ืึธื•ืก ื™ื™ึทื–ื ื•ื•ืึทืจื’ ืงืึทื ืคื™ื’ื™ืขืจื™ื™ืฉืึทืŸ ืฆื•ื‘ื™ื ื“ ืฆื• ืžืึทื›ืŸ ื–ื™ื›ืขืจ ืึทื– ืขืก ืื™ื– ืจื™ื›ื˜ื™ืง.

ื™ื™ึทื–ื ื•ื•ืึทืจื’ ืงืœืึทืงืก ื˜ืึธืŸ ื ื™ื˜ ืคึฟืึทืจืฉื˜ื™ื™ืŸ ื“ืขื ื‘ืึทื’ืจื™ืฃ ืคื•ืŸ ืฆื™ื™ื˜ ื–ืึธื ืขืก; RTC ืกื˜ืึธืจื– ื‘ืœื•ื™ื– ื“ื™ ืฆื™ื™ื˜, ื ื™ืฉื˜ ื“ื™ ืฆื™ื™ื˜ ื–ืึธื ืข ืึธื“ืขืจ ืคืึธื˜ืึธ ืคื•ืŸ UTC (ืงืึธืึธืจื“ื™ื ืึทื˜ืขื“ ื•ื ื™ื•ื•ืขืจืกืึทืœ ืฆื™ื™ื˜, ืื•ื™ืš ื‘ืืงืื ื˜ ื•ื•ื™ GMT ืึธื“ืขืจ Greenwich Mean Time). ืื™ืจ ืงืขื ืขืŸ ื™ื ืกื˜ืึทืœื™ืจืŸ RTC ืžื™ื˜ ืึท ื’ืขืฆื™ื™ึทื’ ื•ื•ืึธืก ืื™ืš ื•ื•ืขืœ ื“ืขืงืŸ ืฉืคึผืขื˜ืขืจ ืื™ืŸ ื“ืขื ืึทืจื˜ื™ืงืœ.

ื“ื™ ืกื™ืกื˜ืขื ืฆื™ื™ื˜ ืื™ื– ื“ื™ ืฆื™ื™ื˜ ื•ื•ืึธืก ื“ื™ ืึทืก ื“ื™ืกืคึผืœื™ื™ื– ืื•ื™ืฃ ื“ื™ GUI ื–ื™ื™ื’ืขืจ ืื•ื™ืฃ ื“ื™ื™ืŸ ื“ืขืกืงื˜ืึทืคึผ, ืื™ืŸ ื“ื™ ืจืขื–ื•ืœื˜ืึทื˜ ืคื•ืŸ ื“ื™ ื“ืึทื˜ืข ื‘ืึทืคึฟืขืœ, ืื™ืŸ ื“ื™ ืฆื™ื™ื˜ ืกื˜ืึทืžืคึผืก ืคื•ืŸ ื“ื™ ืœืึธื’ืก. ื“ืึธืก ืื•ื™ืš ืึทืคึผืœื™ื™ื– ืฆื• ื•ื•ืขืŸ ื˜ืขืงืขืก ื–ืขื ืขืŸ ื‘ืืฉืืคืŸ, ืžืึทื“ืึทืคื™ื™ื“ ืื•ืŸ ื’ืขืขืคื ื˜.

ืื•ื™ืฃ ื‘ืœืึทื˜ ืžืขื ื˜ืฉ ืคึฟืึทืจ rtc ืขืก ืื™ื– ืึท ืคื•ืœ ื‘ืึทืฉืจื™ื™ึทื‘ื•ื ื’ ืคื•ืŸ ื“ื™ RTC ืื•ืŸ ื“ื™ ืกื™ืกื˜ืขื ื–ื™ื™ื’ืขืจ.

ื•ื•ืึธืก ืื™ื– ืžื™ื˜ NTP?

ืงืึธืžืคึผื™ื•ื˜ืขืจืก ืื™ื‘ืขืจ ื“ืขืจ ื•ื•ืขืœื˜ ื ื•ืฆืŸ NTP (ื ืขื˜ื•ื•ืึธืจืง ืฆื™ื™ื˜ ืคึผืจืึธื˜ืึธืงืึธืœ) ืฆื• ืกื™ื ื’ืงืจืึทื ื™ื™ื– ื–ื™ื™ืขืจ ืฆื™ื™ื˜ ืžื™ื˜ ื ืึธืจืžืึทืœ ืจืขืคึฟืขืจืขื ืฅ ืงืœืึทืงืก ืื™ื‘ืขืจ ื“ื™ ืื™ื ื˜ืขืจื ืขื˜ ื ื™ืฆืŸ ืึท ื›ื™ื™ืขืจืึทืจืงื™ ืคื•ืŸ ื ื˜ืคึผ ืกืขืจื•ื•ืขืจืก. ื“ื™ ื”ื•ื™ืคึผื˜ ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจืก ื–ืขื ืขืŸ ื‘ื™ื™ ืฉื™ื›ื˜ืข 1 ืื•ืŸ ื–ื™ื™ ื–ืขื ืขืŸ ื’ืœื™ื™ึทืš ืคืืจื‘ื•ื ื“ืŸ ืฆื• ืคืึทืจืฉื™ื“ืŸ ื ืืฆื™ืื ืืœืข ืฆื™ื™ื˜ ื‘ืึทื“ื™ื ื•ื ื’ืก ื‘ื™ื™ ืฉื™ื›ื˜ืข 0 ื“ื•ืจืš ืกืึทื˜ืขืœื™ื˜, ืจืึทื“ื™ืึธ ืึธื“ืขืจ ืืคื™ืœื• ืžืึธื“ืขืžืก ืื™ื‘ืขืจ ื˜ืขืœืขืคืึธืŸ ืฉื•ืจื•ืช. ืฉื™ื›ื˜ืข 0 ืฆื™ื™ื˜ ื‘ืึทื“ื™ื ื•ื ื’ืก ืงืขื ืขืŸ ื–ื™ื™ืŸ ืึทืŸ ืึทื˜ืึธืžื™ืฉืข ื–ื™ื™ื’ืขืจ, ืึท ืจืึทื“ื™ืึธ ื•ืคื ืขืžืขืจ ื•ื•ืึธืก ืื™ื– ื˜ื•ื ื“ ืฆื• ืกื™ื’ื ืึทืœื– ื˜ืจืึทื ืกืžื™ื˜ื˜ืขื“ ื“ื•ืจืš ืึทื˜ืึธืžื™ืฉืข ื–ื™ื™ื’ืขืจืก, ืึธื“ืขืจ ืึท ื’ืคึผืก ื•ืคื ืขืžืขืจ ื•ื•ืึธืก ื ื™ืฆื˜ ื”ืขื›ืกื˜ ืคึผื™ื ื˜ืœืขืš ื–ื™ื™ื’ืขืจ ืกื™ื’ื ืึทืœื– ื˜ืจืึทื ืกืžื™ื˜ื˜ืขื“ ื“ื•ืจืš ื’ืคึผืก ืกืึทื˜ืึทืœื™ื™ืฅ.

ื“ื™ ื•ื•ืึทืกื˜ ืžืขืจื”ื™ื™ึทื˜ ืคื•ืŸ ื“ื™ ืจืขืคึฟืขืจืขื ืฅ ืกืขืจื•ื•ืขืจืก ื”ืึธื‘ืŸ ืขื˜ืœืขื›ืข ื˜ื•ื™ื–ื ื˜ ืฆื™ื‘ื•ืจ NTP ืกื˜ืจืึทื˜ื•ื 2 ืกืขืจื•ื•ืขืจืก ืึธื•ืคึผืึทื ื“ ืคึฟืึทืจ ื“ืขื ืฆื™ื‘ื•ืจ. ืคื™ืœืข ืึธืจื’ืึทื ืึทื–ื™ื™ืฉืึทื ื– ืื•ืŸ ื™ื•ื–ืขืจื– (ื–ื™ืš ืึทืจื™ื™ึทื ื’ืขืจืขื›ื ื˜) ืžื™ื˜ ืึท ืคึผืœืึทืฅ ืคื•ืŸ ืžื—ื ื•ืช ื•ื•ืึธืก ื“ืึทืจืคึฟืŸ ืึท NTP ืกืขืจื•ื•ืขืจ ืงืœื™ื™ึทื‘ืŸ ืฆื• ืฉื˜ืขืœืŸ ื–ื™ืš ื–ื™ื™ืขืจ ืื™ื™ื’ืขื ืข ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจืก ืึทื–ื•ื™ ืึทื– ื‘ืœื•ื™ื– ืื™ื™ืŸ ื”ื™ื’ืข ื‘ืึทืœืขื‘ืึธืก ืึทืงืกืขืก ืกื˜ืจืึทื˜ื•ื 2 ืึธื“ืขืจ 3. ื–ื™ื™ ืงืึทื ืคื™ื’ื™ืขืจ ื“ื™ ืจื•ืขืŸ ื ืึธื•ื“ื– ืื•ื™ืฃ ื“ื™ ื ืขืฅ ืฆื• ื ื•ืฆืŸ ื“ื™ ื”ื™ื’ืข ื ืขืฅ. ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจ . ืื™ืŸ ื“ืขื ืคืึทืœ ืคื•ืŸ ืžื™ื™ืŸ ื”ื™ื™ื ื ืขืฅ, ื“ืึธืก ืื™ื– ืึท ืฉื™ื›ื˜ืข 3 ืกืขืจื•ื•ืขืจ.

ืคืึทืจืฉื™ื“ืŸ ื™ืžืคึผืœืึทืžืึทื ืฅ ืคื•ืŸ NTP

ื“ืขืจ ืึธืจื™ื’ื™ื ืขืœ ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ืคื•ืŸ NTP ืื™ื– ntpd. ืขืก ืื™ื– ื“ืขืžืึธืœื˜ ื“ื–ืฉื•ื™ื ื“ ื“ื•ืจืš ืฆื•ื•ื™ื™ ื ื™ื™ึทืขืจ ืึธื ืขืก, Chronyd ืื•ืŸ Systemd-Timesyncd. ืึทืœืข ื“ืจื™ื™ ืกื™ื ื’ืงืจืึทื ื™ื™ื– ื“ื™ ื”ื™ื’ืข ื‘ืึทืœืขื‘ืึธืก ืฆื™ื™ื˜ ืžื™ื˜ ืึท NTP ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจ. ื“ื™ systemd-timesyncd ื“ื™ื ืกื˜ ืื™ื– ื ื™ืฉื˜ ื•ื•ื™ ืคืึทืจืœืึธื–ืœืขืš ื•ื•ื™ Chronyd, ืึธื‘ืขืจ ืขืก ืื™ื– ื’ื•ื˜ ื’ืขื ื•ื’ ืคึฟืึทืจ ืจื•ื‘ึฟ ืฆื•ื•ืขืงืŸ. ืื•ื™ื‘ ื“ื™ RTC ืื™ื– ื ื™ืฉื˜ ืกื™ื ืง, ืขืก ืงืขื ืขืŸ ื‘ื™ืกืœืขื›ื•ื•ื™ื™ึทื– ืกื˜ืจื•ื™ืขืจืŸ ื“ื™ ืกื™ืกื˜ืขื ืฆื™ื™ื˜ ืฆื• ืกื™ื ื’ืงืจืึทื ื™ื™ื– ืžื™ื˜ ื“ื™ NTP ืกืขืจื•ื•ืขืจ ื•ื•ืขืŸ ื“ื™ ื”ื™ื’ืข ืกื™ืกื˜ืขื ืฆื™ื™ื˜ ื“ืจื™ืคืฅ ืึท ื‘ื™ืกืœ. ื“ื™ systemd-timesync ื“ื™ื ืกื˜ ืงืขื ืขืŸ ื ื™ื˜ ื–ื™ื™ืŸ ื’ืขื•ื•ื™ื™ื ื˜ ื•ื•ื™ ืึท ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจ.

ื›ืจืึธื ื™ืฉ ืื™ื– ืึทืŸ ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ืคื•ืŸ NTP ื•ื•ืึธืก ื›ึผื•ืœืœ ืฆื•ื•ื™ื™ ืžื’ื™ืœื”: ื“ื™ Chronyd Daemon ืื•ืŸ ืึท ื‘ืึทืคึฟืขืœ ืฉื•ืจื” ืฆื•ื‘ื™ื ื“ ื’ืขืจื•ืคึฟืŸ Chronyc. Chrony ื”ืื˜ ืขื˜ืœืขื›ืข ืคึฟืขื™ึดืงื™ื™ื˜ืŸ ื•ื•ืึธืก ื–ืขื ืขืŸ ื™ื ื“ื™ืกืคึผืขื ืกืึทื‘ืึทืœ ืื™ืŸ ืคื™ืœืข ืงืึทืกืขืก:

  • Chrony ืงืขื ืขืŸ ืกื™ื ื’ืงืจืึทื ื™ื™ื– ืžื™ื˜ ืึท ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจ ืคื™ืœ ืคืึทืกื˜ืขืจ ื•ื•ื™ ื“ื™ ืึทืœื˜ ื ื˜ืคึผื“ ื“ื™ื ืกื˜. ื“ืึธืก ืื™ื– ื’ื•ื˜ ืคึฟืึทืจ ืœืึทืคึผื˜ืึทืคึผืก ืึธื“ืขืจ ื“ืขืกืงื˜ืึทืคึผืก ื•ื•ืึธืก ื˜ืึธืŸ ื ื™ื˜ ืึทืจื‘ืขื˜ ืึทืœืข ื“ื™ ืฆื™ื™ื˜.
  • ืขืก ืงืขื ืขืŸ ืคืึทืจื’ื™ื˜ื™ืงืŸ ืคึฟืึทืจ ื–ื™ื™ื’ืขืจ ืคืœืึทืงื˜ืฉื•ื™ื™ืฉืึทื ื–, ืึทื–ืึท ื•ื•ื™ ื•ื•ืขืŸ ื“ืขืจ ื‘ืึทืœืขื‘ืึธืก ื’ื™ื™ื˜ ืฆื• ืฉืœืึธืคืŸ ืึธื“ืขืจ ื’ื™ื™ื˜ ืืจื™ื™ืŸ ืฉืœืึธืคืŸ ืžืึธื“ืข, ืึธื“ืขืจ ื•ื•ืขืŸ ื“ื™ ื–ื™ื™ื’ืขืจ ืขื ื“ืขืจื•ื ื’ืขืŸ ืจืขื›ื˜ ืฆื• ืึธืคื˜ืงื™ื™ึทื˜ ื›ืึทืคึผื™ื ื’, ื•ื•ืึธืก ืกืœืึธื•ื– ืึทืจืึธืคึผ ืงืœืึทืงืก ื‘ื™ื™ ื ื™ื“ืขืจื™ืง ืœืึธื•ื“ื–.
  • ืขืก ืกืึทืœื•ื•ื– ืฆื™ื™ื˜ ืคึผืจืึธื‘ืœืขืžืก ืฉื™ื™ึทื›ื•ืช ืฆื• ืึทื ืกื˜ื™ื™ื‘ืึทืœ ื ืขืฅ ืงืฉืจ ืึธื“ืขืจ ื ืขืฅ ืงืึทื ื“ื–ืฉืขืกื˜ืฉืึทืŸ.
  • ืขืก ืจืขื’ื™ืึทืœื™ื™ืฅ ื ืขืฅ ื“ื™ืœื™ื™ื–.
  • ื ืึธืš ื“ืขืจ ืขืจืฉื˜ ืฆื™ื™ื˜ ืกื™ื ืง, Chrony ืงื™ื™ื ืžืึธืœ ืกื˜ืึทืคึผืก ื“ื™ ื–ื™ื™ื’ืขืจ. ื“ืึธืก ื’ื™ื˜ ืกื˜ืึทื‘ื™ืœ ืื•ืŸ ืงืึธื ืกื™ืกื˜ืขื ื˜ ื˜ื™ื™ืžืกืœืึธืฅ ืคึฟืึทืจ ืคื™ืœืข ืกื™ืกื˜ืขื ื‘ืึทื“ื™ื ื•ื ื’ืก ืื•ืŸ ืึทืคึผืœืึทืงื™ื™ืฉืึทื ื–.
  • Chrony ืงืขื ืขืŸ ืึทืจื‘ืขื˜ืŸ ืืคื™ืœื• ืึธืŸ ืึท ื ืขืฅ ืงืฉืจ. ืื™ืŸ ื“ืขื ืคืึทืœ, ื“ื™ ื”ื™ื’ืข ื‘ืึทืœืขื‘ืึธืก ืึธื“ืขืจ ืกืขืจื•ื•ืขืจ ืงืขื ืขืŸ ื–ื™ื™ืŸ ื“ืขืจื”ื™ื™ึทื ื˜ื™ืงื˜ ืžืึทื ื™ื•ืึทืœื™.
  • Chrony ืงืขื ืขืŸ ืฉืคึผื™ืœืŸ ื•ื•ื™ ืึท NTP ืกืขืจื•ื•ืขืจ.

ืึทืžืึธืœ ื•ื•ื™ื“ืขืจ, NTP ืื™ื– ืึท ืคึผืจืึธื˜ืึธืงืึธืœ ื•ื•ืึธืก ืงืขื ืขืŸ ื–ื™ื™ืŸ ื™ืžืคึผืœืึทืžืขื ืึทื“ ืื•ื™ืฃ ืึท ืœื™ื ื•ืงืก ื‘ืึทืœืขื‘ืึธืก ื ื™ืฆืŸ Chrony ืึธื“ืขืจ systemd-timesyncd.

ื“ื™ NTP, Chrony ืื•ืŸ systemd-timesyncd RPMs ื–ืขื ืขืŸ ื‘ืืจืขื›ื˜ื™ื’ื˜ ืื™ืŸ ื“ื™ ื ืึธืจืžืึทืœ ืคืขื“ืึธืจืึท ืจื™ืคึผืึทื–ืึทื˜ืึธืจื™ื–. ื“ื™ systemd-udev RPM ืื™ื– ืึท ืงืขืจืŸ ื’ืขืฉืขืขื ื™ืฉ ืคืึทืจื•ื•ืึทืœื˜ืขืจ ื•ื•ืึธืก ืื™ื– ืื™ื ืกื˜ืึทืœื™ืจืŸ ื“ื•ืจืš ืคืขืœื™ืงื™ื™ึทื˜ ืื•ื™ืฃ ืคืขื“ืึธืจืึท, ืึธื‘ืขืจ ืื™ื– ืึทืคึผืฉืึทื ืึทืœ.

ืื™ืจ ืงืขื ืขืŸ ื™ื ืกื˜ืึทืœื™ืจืŸ ืึทืœืข ื“ืจื™ื™ ืื•ืŸ ื‘ืึทืฉื˜ื™ืžืขืŸ ืฆื•ื•ื™ืฉืŸ ื–ื™ื™, ืึธื‘ืขืจ ื“ืึธืก ื•ื•ืขื˜ ืžืึทื›ืŸ ืึทืŸ ืขืงืกื˜ืจืข ืงืึธืคึผื•ื•ื™ื™ื˜ื™ืง. ืึทื–ื•ื™ ืขืก ืื™ื– ื‘ืขืกืขืจ ื ื™ืฉื˜ ืฆื•. ืžืึธื“ืขืจืŸ ืจื™ืœื™ืกื™ื– ืคื•ืŸ Fedora, CentOS ืื•ืŸ RHEL ื”ืึธื‘ืŸ ืืจื™ื‘ืขืจื’ืขืคืืจืŸ ืฆื• Chrony ื•ื•ื™ ื“ื™ ืคืขืœื™ืงื™ื™ึทื˜ ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ, ืื•ืŸ ื–ื™ื™ ืื•ื™ืš ื”ืึธื‘ืŸ systemd-timesyncd. ืื™ืš ื’ืขืคึฟื™ื ืขืŸ Chrony ืฆื• ืึทืจื‘ืขื˜ืŸ ื’ื•ื˜, ืฆื•ืฉื˜ืขืœืŸ ืึท ื‘ืขืกืขืจ ืฆื•ื‘ื™ื ื“ ื•ื•ื™ ื“ื™ NTP ื“ื™ื ืกื˜, ืฆื•ืฉื˜ืขืœืŸ ืคื™ืœ ืžืขืจ ืื™ื ืคึฟืึธืจืžืึทืฆื™ืข ืื•ืŸ ืงืึธื ื˜ืจืึธืœ, ื•ื•ืึธืก ืกื™ืกื˜ืขื ืึทื“ืžื™ื ื™ืกื˜ืจืึทื˜ืึธืจืก ื•ื•ืขืœืŸ ื–ื™ื›ืขืจ ื”ื ืื”.

ื“ื™ืกื™ื™ื‘ืœื™ื ื’ NTP ื‘ืึทื“ื™ื ื•ื ื’ืก

ื“ื™ NTP ื“ื™ื ืกื˜ ืงืขืŸ ืฉื•ื™ืŸ ืœื•ื™ืคืŸ ืื•ื™ืฃ ื“ื™ื™ืŸ ื‘ืึทืœืขื‘ืึธืก. ืื•ื™ื‘ ืึทื–ื•ื™, ืื™ืจ ื“ืึทืจืคึฟืŸ ืฆื• ื“ื™ืกื™ื™ื‘ืึทืœ ืขืก ืื™ื™ื“ืขืจ ืื™ืจ ื‘ืึทืฉื˜ื™ืžืขืŸ ืฆื• ืขืคึผืขืก ืึทื ื“ืขืจืฉ. ืื™ืš ื”ืื˜ ื›ืจื•ื ื™ื“ ืคืœื™ืกื ื“ื™ืง ืึทื–ื•ื™ ืื™ืš ื’ืขื•ื•ื™ื™ื ื˜ ื“ื™ ืคืืœื’ืขื ื“ืข ืงืึทืžืึทื ื“ื– ืฆื• ื”ืึทืœื˜ืŸ ืื•ืŸ ื“ื™ืกื™ื™ื‘ืึทืœ ืขืก. ืœื•ื™ืคืŸ ื“ื™ ืฆื•ื ืขืžืขืŸ ืงืึทืžืึทื ื“ื– ืคึฟืึทืจ ืงื™ื™ืŸ NTP ื“ื™ื™ืžืึทืŸ ืื™ืจ ืœื•ื™ืคืŸ ืื•ื™ืฃ ื“ื™ื™ืŸ ื‘ืึทืœืขื‘ืึธืก:

[root@testvm1 ~]# systemctl disable chronyd ; systemctl stop chronyd
Removed /etc/systemd/system/multi-user.target.wants/chronyd.service.
[root@testvm1 ~]#

ืงื•ืง ืึทื– ื“ื™ ืกืขืจื•ื•ื™ืก ืื™ื– ืกื˜ืึทืคึผื˜ ืื•ืŸ ืคืึทืจืงืจื™ืคึผืœื˜:

[root@testvm1 ~]# systemctl status chronyd
โ— chronyd.service - NTP client/server
     Loaded: loaded (/usr/lib/systemd/system/chronyd.service; disabled; vendor preset: enabled)
     Active: inactive (dead)
       Docs: man:chronyd(8)
             man:chrony.conf(5)
[root@testvm1 ~]#

ืกื˜ืึทื˜ื•ืก ื˜ืฉืขืง ืื™ื™ื“ืขืจ ืงืึทื˜ืขืจ

ื“ื™ ืกื™ืกื˜ืขื ื–ื™ื™ื’ืขืจ ืกื™ื ื’ืงืจืึทื ืึทื–ื™ื™ืฉืึทืŸ ืกื˜ืึทื˜ื•ืก ืึทืœืึทื•ื– ืื™ืจ ืฆื• ื‘ืึทืฉืœื™ืกืŸ ืื•ื™ื‘ ื“ื™ NTP ื“ื™ื ืกื˜ ืื™ื– ืคืœื™ืกื ื“ื™ืง. ื–ื™ื ื˜ ืื™ืจ ื”ืึธื˜ ื ื™ืฉื˜ ืกื˜ืึทืจื˜ืขื“ NTP ื ืึธืš, ื“ื™ ื˜ื™ื™ืžืกื™ื ืง-ืกื˜ืึทื˜ื•ืก ื‘ืึทืคึฟืขืœ ื•ื•ืขื˜ ืึธื ื•ื•ื™ื™ึทื–ืŸ ื“ืขื:

[root@testvm1 ~]# timedatectl timesync-status
Failed to query server: Could not activate remote peer.

ื ื“ื™ืจืขืงื˜ ืกื˜ืึทื˜ื•ืก ื‘ืขื˜ืŸ ื’ื™ื˜ ื•ื•ื™ื›ื˜ื™ืง ืื™ื ืคึฟืึธืจืžืึทืฆื™ืข. ืคึฟืึทืจ ื‘ื™ื™ึทืฉืคึผื™ืœ, ื“ื™ timedatectl ื‘ืึทืคึฟืขืœ ืึธืŸ ืึทืจื’ื•ืžืขื ื˜ ืึธื“ืขืจ ืึธืคึผืฆื™ืขืก ืขืงืกืึทืงื™ื•ืฅ ื“ื™ ืกื˜ืึทื˜ื•ืก ืกืึทื‘ืงืึทืžืึทื ื“ ื“ื•ืจืš ืคืขืœื™ืงื™ื™ึทื˜:

[root@testvm1 ~]# timedatectl status
           Local time: Fri 2020-05-15 08:43:10 EDT  
           Universal time: Fri 2020-05-15 12:43:10 UTC  
                 RTC time: Fri 2020-05-15 08:43:08      
                Time zone: America/New_York (EDT, -0400)
System clock synchronized: no                          
              NTP service: inactive                    
          RTC in local TZ: yes                    

Warning: The system is configured to read the RTC time in the local time zone.
         This mode cannot be fully supported. It will create various problems
         with time zone changes and daylight saving time adjustments. The RTC
         time is never updated, it relies on external facilities to maintain it.
         If at all possible, use RTC in UTC by calling
         'timedatectl set-local-rtc 0'.
[root@testvm1 ~]#

ื“ืึธืก ื•ื•ืขื˜ ื’ืขื‘ืŸ ืื™ืจ ื“ื™ ื”ื™ื’ืข ืฆื™ื™ื˜ ืคึฟืึทืจ ื“ื™ื™ืŸ ื‘ืึทืœืขื‘ืึธืก, UTC ืฆื™ื™ื˜ ืื•ืŸ RTC ืฆื™ื™ื˜. ืื™ืŸ ื“ืขื ืคืึทืœ, ื“ื™ ืกื™ืกื˜ืขื ืฆื™ื™ื˜ ืื™ื– ื‘ืึทืฉื˜ื™ืžื˜ ืฆื• ื“ื™ ืึทืžืขืจื™ืงืข / ื ื™ื•_ื™ืึธืจืง (ื˜ื–) ืฆื™ื™ื˜ ื–ืึธื ืข, ื“ื™ RTC ืื™ื– ื‘ืึทืฉื˜ื™ืžื˜ ืฆื• ื“ื™ ืฆื™ื™ื˜ ืื™ืŸ ื“ื™ ื”ื™ื’ืข ืฆื™ื™ื˜ ื–ืึธื ืข, ืื•ืŸ ื“ื™ NTP ืกืขืจื•ื•ื™ืก ืื™ื– ื ื™ืฉื˜ ืึทืงื˜ื™ื•ื•. ื“ื™ RTC ืฆื™ื™ื˜ ื”ืื˜ ืื ื’ืขื”ื•ื™ื‘ืŸ ืฆื• ืึธืคึผื ื™ื™ื’ืŸ ืึท ื‘ื™ืกืœ ืคื•ืŸ ื“ื™ ืกื™ืกื˜ืขื ืฆื™ื™ื˜. ื“ืึธืก ืื™ื– ื ืึธืจืžืึทืœ ืคึฟืึทืจ ืกื™ืกื˜ืขืžืขืŸ ื•ื•ืขืžืขื ืก ื–ื™ื™ื’ืขืจืก ื–ืขื ืขืŸ ื ื™ืฉื˜ ืกื™ื ื’ืงืจืึทื ื™ื™ื–ื“. ื“ื™ ืกื•ืžืข ืคื•ืŸ โ€‹โ€‹โ€‹โ€‹ืึธืคืกืขื˜ ืื•ื™ืฃ ื“ืขืจ ื‘ืึทืœืขื‘ืึธืก ื“ืขืคึผืขื ื“ืก ืื•ื™ืฃ ื“ื™ ืฆื™ื™ื˜ ื•ื•ืึธืก ืื™ื– ื“ื•ืจื›ื’ืขื’ืื ื’ืขืŸ ื–ื™ื ื˜ ื“ื™ ืกื™ืกื˜ืขื ืื™ื– ืœืขืฆื˜ืข ืกื™ื ื’ืงืจืึทื ื™ื™ื–ื“.

ืžื™ืจ ืื•ื™ืš ื‘ืืงื•ืžืขืŸ ืึท ื•ื•ืืจืขื ื•ื ื’ ื•ื•ืขื’ืŸ ื ื™ืฆืŸ ื”ื™ื’ืข ืฆื™ื™ื˜ ืคึฟืึทืจ RTC - ื“ืึธืก ืึทืคึผืœื™ื™ื– ืฆื• ืฆื™ื™ื˜ ื–ืึธื ืข ืขื ื“ืขืจื•ื ื’ืขืŸ ืื•ืŸ DST ืกืขื˜ื˜ื™ื ื’ืก. ืื•ื™ื‘ ื“ื™ ืงืึธืžืคึผื™ื•ื˜ืขืจ ืื™ื– ืื•ื™ืกื’ืขื“ืจื™ื™ื˜ ืึทื•ื•ืขืง ื•ื•ืขืŸ ืขื ื“ืขืจื•ื ื’ืขืŸ ื“ืึทืจืคึฟืŸ ืฆื• ื–ื™ื™ืŸ ื’ืขืžืื›ื˜, ื“ื™ RTC ื•ื•ืขื˜ ื ื™ืฉื˜ ื˜ื•ื™ืฉืŸ. ืึธื‘ืขืจ ืคึฟืึทืจ ืกืขืจื•ื•ืขืจืก ืึธื“ืขืจ ืื ื“ืขืจืข ืžื—ื ื•ืช ื•ื•ืึธืก ืœื•ื™ืคืŸ ืึทืจื•ื ื“ื™ ื–ื™ื™ื’ืขืจ, ื“ืึธืก ืื™ื– ื ื™ืฉื˜ ืึท ืคึผืจืึธื‘ืœืขื. ืื™ืŸ ืึทื“ื™ืฉืึทืŸ, ืงื™ื™ืŸ ื“ื™ื ืกื˜ ื•ื•ืึธืก ื’ื™ื˜ NTP ืฆื™ื™ื˜ ืกื™ื ื’ืงืจืึทื ืึทื–ื™ื™ืฉืึทืŸ ื•ื•ืขื˜ ืกื˜ืจื•ื™ืขืจืŸ ื“ื™ ืฆื™ื™ื˜ ืคื•ืŸ ื“ืขืจ ื‘ืึทืœืขื‘ืึธืก ื‘ืขืฉืึทืก ื“ื™ ืขืจืฉื˜ ืกื˜ืึทืจื˜ืึทืคึผ ืคืึทืกืข, ืึทื–ื•ื™ ื“ื™ ืฆื™ื™ื˜ ื•ื•ืขื˜ ื–ื™ื™ืŸ ืจื™ื›ื˜ื™ืง ื•ื•ื™ื“ืขืจ ื ืึธืš ื“ื™ ืกื˜ืึทืจื˜ืึทืคึผ ืื™ื– ื’ืึทื ืฅ.

ื‘ืึทืฉื˜ืขื˜ื™ืงืŸ ื“ื™ ืฆื™ื™ื˜ ื–ืึธื ืข

ื™ื•ื–ืฉืึทื•ื•ืึทืœื™, ืื™ืจ ืกืคึผืขืฆื™ืคื™ืฆื™ืจืŸ ื“ื™ ืฆื™ื™ื˜ ื–ืึธื ืข ื‘ืขืฉืึทืก ื“ื™ ื™ื ืกื˜ืึทืœื™ืจื•ื ื’ ืคึผืจืึธืฆืขื“ื•ืจ ืื•ืŸ ืื™ืจ ื˜ืึธืŸ ื ื™ื˜ ื”ืึธื‘ืŸ ื“ื™ ืึทืจื‘ืขื˜ ืฆื• ื˜ื•ื™ืฉืŸ ืขืก ืฉืคึผืขื˜ืขืจ. ืึธื‘ืขืจ, ืขืก ื–ืขื ืขืŸ ืฆื™ื™ื˜ ื•ื•ืขืŸ ืื™ืจ ื“ืึทืจืคึฟืŸ ืฆื• ื˜ื•ื™ืฉืŸ ื“ื™ ืฆื™ื™ื˜ ื–ืึธื ืข. ืขืก ื–ืขื ืขืŸ ืขื˜ืœืขื›ืข ืžื›ืฉื™ืจื™ื ื•ื•ืึธืก ืงืขื ืขืŸ ื”ืขืœืคืŸ. ืœื™ื ื•ืงืก ื ื™ืฆื˜ ื˜ื™ื™ืžื–ืึธื ืข ื˜ืขืงืขืก ืฆื• ื‘ืึทืฉื˜ื™ืžืขืŸ ื“ื™ ื”ื™ื’ืข ืฆื™ื™ื˜ ื–ืึธื ืข ืคื•ืŸ โ€‹โ€‹ืึท ื‘ืึทืœืขื‘ืึธืก. ื“ื™ ื˜ืขืงืขืก ื–ืขื ืขืŸ ืื™ืŸ ื“ื™ ื•ื•ืขื’ื•ื•ื™ื™ึทื–ืขืจ /usr/share/zoneinfo. ื“ื•ืจืš ืคืขืœื™ืงื™ื™ึทื˜, ืคึฟืึทืจ ืžื™ื™ืŸ ืฆื™ื™ื˜ ื–ืึธื ืข, ื“ื™ ืกื™ืกื˜ืขื ืคึผืจื™ืกืงืจื™ื™ื‘ื– ื“ืขื: /etc/localtime -> ../usr/share/zoneinfo/America/New_York. ืึธื‘ืขืจ ืื™ืจ ื˜ืึธืŸ ื ื™ื˜ ื“ืึทืจืคึฟืŸ ืฆื• ื•ื•ื™ืกืŸ ืึทื–ืึท ืกืึทื˜ืึทืœื˜ื™ื– ืฆื• ื˜ื•ื™ืฉืŸ ื“ื™ ืฆื™ื™ื˜ ื–ืึธื ืข.

ื“ื™ ื”ื•ื™ืคึผื˜ ื–ืึทืš ืื™ื– ืฆื• ื•ื•ื™ืกืŸ ื“ื™ ื‘ืึทืึทืžื˜ืขืจ ืฆื™ื™ื˜ ื–ืึธื ืข ื ืึธืžืขืŸ ืคึฟืึทืจ ื“ื™ื™ืŸ ืึธืจื˜ ืื•ืŸ ื“ื™ ืงืึธืจืึทืกืคึผืึทื ื“ื™ื ื’ ื‘ืึทืคึฟืขืœ. ื–ืืœ ืก ื–ืึธื’ืŸ ืื™ืจ ื•ื•ื™ืœืŸ ืฆื• ื˜ื•ื™ืฉืŸ ื“ื™ ืฆื™ื™ื˜ ื–ืึธื ืข ืฆื• ืœืืก ืื ื“ื–ืฉืขืœืขืก:


[root@testvm2 ~]# timedatectl list-timezones | column
<SNIP>
America/La_Paz                  Europe/Budapest
America/Lima                    Europe/Chisinau
America/Los_Angeles             Europe/Copenhagen
America/Maceio                  Europe/Dublin
America/Managua                 Europe/Gibraltar
America/Manaus                  Europe/Helsinki
<SNIP>

ืื™ืฆื˜ ืื™ืจ ืงืขื ืขืŸ ืฉื˜ืขืœืŸ ื“ื™ ืฆื™ื™ื˜ ื–ืึธื ืข. ืื™ืš ื’ืขื•ื•ื™ื™ื ื˜ ื“ื™ ื“ืึทื˜ืข ื‘ืึทืคึฟืขืœ ืฆื• ืงืึธื ื˜ืจืึธืœื™ืจืŸ ืคึฟืึทืจ ืขื ื“ืขืจื•ื ื’ืขืŸ, ืึธื‘ืขืจ ืื™ืจ ืงืขื ืขืŸ ืื•ื™ืš ื ื•ืฆืŸ timedatectl:

[root@testvm2 ~]# date
Tue 19 May 2020 04:47:49 PM EDT
[root@testvm2 ~]# timedatectl set-timezone America/Los_Angeles
[root@testvm2 ~]# date
Tue 19 May 2020 01:48:23 PM PDT
[root@testvm2 ~]#

ืื™ืฆื˜ ืื™ืจ ืงืขื ืขืŸ ื˜ื•ื™ืฉืŸ ื“ื™ื™ืŸ ื‘ืึทืœืขื‘ืึธืก ืก ืฆื™ื™ื˜ ื–ืึธื ืข ืฆื•ืจื™ืง ืฆื• ื”ื™ื’ืข ืฆื™ื™ื˜.

systemd-timesyncd

ื“ื™ systemd timesync daemon ื’ื™ื˜ ืึทืŸ NTP ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ื•ื•ืึธืก ืื™ื– ื’ืจื™ื ื’ ืฆื• ืคื™ืจืŸ ืื™ืŸ ื“ื™ ืกื™ืกื˜ืขืžื“ ืงืึธื ื˜ืขืงืกื˜. ืขืก ืื™ื– ืื™ื ืกื˜ืึทืœื™ืจืŸ ื“ื•ืจืš ืคืขืœื™ืงื™ื™ึทื˜ ืื•ื™ืฃ ืคืขื“ืึธืจืึท ืื•ืŸ ื•ื‘ื•ื ื˜ื•. ืึธื‘ืขืจ, ืขืก ืกื˜ืึทืจืฅ ื‘ืœื•ื™ื– ื“ื•ืจืš ืคืขืœื™ืงื™ื™ึทื˜ ืื•ื™ืฃ ื•ื‘ื•ื ื˜ื•. ืื™ืš ื‘ื™ืŸ ื ื™ืฉื˜ ื–ื™ื›ืขืจ ื•ื•ืขื’ืŸ ืื ื“ืขืจืข ื“ื™ืกื˜ืจื™ื‘ื™ื•ืฉืึทื ื–. ืื™ืจ ืงืขื ืขืŸ ืงืึธื ื˜ืจืึธืœื™ืจืŸ ืคึฟืึทืจ ื–ื™ืš:

[root@testvm1 ~]# systemctl status systemd-timesyncd

ืงืึทื ืคื™ื’ื™ืขืจ systemd-timesyncd

ื“ื™ ืงืึทื ืคื™ื’ื™ืขืจื™ื™ืฉืึทืŸ ื˜ืขืงืข ืคึฟืึทืจ systemd-timesyncd ืื™ื– /etc/systemd/timesyncd.conf. ื“ืึธืก ืื™ื– ืึท ืคึผืฉื•ื˜ ื˜ืขืงืข ืžื™ื˜ ื•ื•ื™ื™ื ื™ืงืขืจืข ืึธืคึผืฆื™ืขืก ื•ื•ื™ ื“ื™ ืึทืœื˜ NTP ืื•ืŸ Chronyd ื‘ืึทื“ื™ื ื•ื ื’ืก. ื“ืึธ ืื™ื– ื“ืขืจ ืื™ื ื”ืึทืœื˜ ืคื•ืŸ ื“ืขื ื˜ืขืงืข (ืึธืŸ ื•ื•ื™ื™ึทื˜ืขืจ ืžืึธื“ื™ืคื™ืงืึทื˜ื™ืึธื ืก) ืื•ื™ืฃ ืžื™ื™ืŸ Fedora VM:

#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.
#
# Entries in this file show the compile time defaults.
# You can change settings by editing this file.
# Defaults can be restored by simply deleting this file.
#
# See timesyncd.conf(5) for details.

[Time]
#NTP=
#FallbackNTP=0.fedora.pool.ntp.org 1.fedora.pool.ntp.org 2.fedora.pool.ntp.org 3.fedora.pool.ntp.org
#RootDistanceMaxSec=5
#PollIntervalMinSec=32
#PollIntervalMaxSec=2048

ื“ืขืจ ื‘ืœื•ื™ื– ืึธืคึผื˜ื™ื™ืœื•ื ื’ ืขืก ื›ึผื•ืœืœ, ืึทื—ื•ืฅ ื‘ืึทืžืขืจืงื•ื ื’ืขืŸ, ืื™ื– [ืฆื™ื™ื˜]. ืึทืœืข ืื ื“ืขืจืข ืฉื•ืจื•ืช ื–ืขื ืขืŸ ืงืึทืžืขื ื˜ืึทื“ ืื•ื™ืก. ื“ืึธืก ื–ืขื ืขืŸ ื“ื™ ืคืขืœื™ืงื™ื™ึทื˜ ื•ื•ืึทืœื•ืขืก ืื•ืŸ ื–ืึธืœ ื ื™ื˜ ื–ื™ื™ืŸ ื’ืขื‘ื™ื˜ืŸ (ืกื™ื™ึทื“ืŸ ืื™ืจ ื”ืึธื‘ืŸ ืึท ืกื™ื‘ื” ืฆื•). ืื•ื™ื‘ ืื™ืจ ื˜ืึธืŸ ื ื™ื˜ ื”ืึธื‘ืŸ ืึท NTP ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจ ื“ื™ืคื™ื™ื ื“ ืื™ืŸ ื“ื™ NTP= ืฉื•ืจื”, ืคืขื“ืึธืจืึท ื“ื™ืคืึธืœืฅ ืฆื• ืึท ืคืึทืœื‘ืึทืง ืคืขื“ืึธืจืึท ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจ. ืื™ืš ื™ื•ื–ืฉืึทื•ื•ืึทืœื™ ืœื™ื™ื’ืŸ ืžื™ื™ืŸ ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจ:

NTP=myntpserver

ืคืœื™ืกื ื“ื™ืง ืฆื™ื™ื˜ ืกื™ื ืง

ืื™ืจ ืงืขื ืขืŸ ืึธื ื”ื™ื™ื‘ืŸ ืื•ืŸ ืžืึทื›ืŸ systemd-timesyncd ืึทืงื˜ื™ื•ื• ื•ื•ื™ ื“ืึธืก:

[root@testvm2 ~]# systemctl enable systemd-timesyncd.service
Created symlink /etc/systemd/system/dbus-org.freedesktop.timesync1.service โ†’ /usr/lib/systemd/system/systemd-timesyncd.service.
Created symlink /etc/systemd/system/sysinit.target.wants/systemd-timesyncd.service โ†’ /usr/lib/systemd/system/systemd-timesyncd.service.
[root@testvm2 ~]# systemctl start systemd-timesyncd.service
[root@testvm2 ~]#

ื‘ืึทืฉื˜ืขื˜ื™ืงืŸ ื“ื™ ื™ื™ึทื–ื ื•ื•ืึทืจื’ ื–ื™ื™ื’ืขืจ

ื“ืึธ ืื™ื– ื•ื•ื™ ื“ื™ ืกื™ื˜ื•ืึทืฆื™ืข ืงื•ืงื˜ ื•ื•ื™ ื ืึธืš ืคืœื™ืกื ื“ื™ืง Timesincd:

[root@testvm2 systemd]# timedatectl
               Local time: Sat 2020-05-16 14:34:54 EDT  
           Universal time: Sat 2020-05-16 18:34:54 UTC  
                 RTC time: Sat 2020-05-16 14:34:53      
                Time zone: America/New_York (EDT, -0400)
System clock synchronized: yes                          
              NTP service: active                      
          RTC in local TZ: no

ื˜ื›ื™ืœืขืก, ื“ื™ ื—ื™ืœื•ืง ืฆื•ื•ื™ืฉืŸ RTC ืื•ืŸ ื”ื™ื’ืข ืฆื™ื™ื˜ (EDT) ืื™ื– ื•ื•ื™ื™ื ื™ืงืขืจ ื•ื•ื™ ืึท ืจื’ืข, ืื•ืŸ ื“ื™ ื“ื™ืกืงืจืขืคึผืึทื ืกื™ ื™ื ืงืจื™ืกื™ื– ืžื™ื˜ ื ืึธืš ืขื˜ืœืขื›ืข ืกืขืงื•ื ื“ืขืก ืื™ืŸ ื“ื™ ื•ื•ื™ื™ึทื˜ืขืจ ื‘ื™ืกืœ ื˜ืขื’. ื–ื™ื ื˜ ืขืก ืื™ื– ืงื™ื™ืŸ ื‘ืึทื’ืจื™ืฃ ืคื•ืŸ ืฆื™ื™ื˜ ื–ืึธื ืขืก ืื™ืŸ RTC, ื“ื™ timedatectl ื‘ืึทืคึฟืขืœ ืžื•ื–ืŸ ื“ื•ืจื›ืคื™ืจืŸ ืึท ืคืึทืจื’ืœื™ื™ึทืš ืฆื• ื‘ืึทืฉืœื™ืกืŸ ื“ื™ ืจื™ื›ื˜ื™ืง ืฆื™ื™ื˜ ื–ืึธื ืข. ืื•ื™ื‘ ื“ื™ RTC ืฆื™ื™ื˜ ืื™ื– ื ื™ืฉื˜ ืคึผื•ื ืงื˜ ืฉื˜ื™ืžืขืŸ ืฆื• ื“ื™ ื”ื™ื’ืข ืฆื™ื™ื˜, ื“ืึธืก ืื™ื– ืื•ื™ืš ื ื™ืฉื˜ ืคึผืึทืกื™ืง ืคึฟืึทืจ ื“ื™ ื”ื™ื’ืข ืฆื™ื™ื˜ ื–ืึธื ืข.

ืื™ืจ ื–ื•ื›ื˜ ืคึฟืึทืจ ืžืขืจ ืื™ื ืคึฟืึธืจืžืึทืฆื™ืข, ืื™ืš ืึธืคึผื’ืขืฉื˜ืขืœื˜ ื“ื™ ืกื˜ืึทื˜ื•ืก ืคื•ืŸ systemd-timesync ืื•ืŸ ื’ืขืคึฟื•ื ืขืŸ ื“ืขื:

[root@testvm2 systemd]# systemctl status systemd-timesyncd.service
โ— systemd-timesyncd.service - Network Time Synchronization
     Loaded: loaded (/usr/lib/systemd/system/systemd-timesyncd.service; enabled; vendor preset: disabled)
     Active: active (running) since Sat 2020-05-16 13:56:53 EDT; 18h ago
       Docs: man:systemd-timesyncd.service(8)
   Main PID: 822 (systemd-timesyn)
     Status: "Initial synchronization to time server 163.237.218.19:123 (2.fedora.pool.ntp.org)."
      Tasks: 2 (limit: 10365)
     Memory: 2.8M
        CPU: 476ms
     CGroup: /system.slice/systemd-timesyncd.service
             โ””โ”€822 /usr/lib/systemd/systemd-timesyncd

May 16 09:57:24 testvm2.both.org systemd[1]: Starting Network Time Synchronization...
May 16 09:57:24 testvm2.both.org systemd-timesyncd[822]: System clock time unset or jumped backwards, restoring from recorded timestamp: Sat 2020-05-16 13:56:53 EDT
May 16 13:56:53 testvm2.both.org systemd[1]: Started Network Time Synchronization.
May 16 13:57:56 testvm2.both.org systemd-timesyncd[822]: Initial synchronization to time server 163.237.218.19:123 (2.fedora.pool.ntp.org).
[root@testvm2 systemd]#

ื‘ืึทืžืขืจืงืŸ ื“ื™ ืงืœืึธืฅ ืึธื ื–ืึธื’ ื•ื•ืึธืก ื–ืื’ื˜ ืึทื– ื“ื™ ืกื™ืกื˜ืขื ืฆื™ื™ื˜ ืื™ื– ื ื™ืฉื˜ ื‘ืึทืฉื˜ื™ืžื˜ ืึธื“ืขืจ ื‘ืึทืฉื˜ืขื˜ื™ืง. ื“ื™ Timesync ืกืขืจื•ื•ื™ืก ืฉื˜ืขืœื˜ ื“ื™ ืกื™ืกื˜ืขื ืฆื™ื™ื˜ ื‘ืื–ื™ืจื˜ ืื•ื™ืฃ ื“ื™ ืฆื™ื™ื˜ ืกื˜ืึทืžืคึผ. ื˜ื™ืžืขืกื˜ืึทืžืคึผืก ื–ืขื ืขืŸ ืžื™ื™ื ื˜ื™ื™ื ื“ ื“ื•ืจืš ื“ื™ ื˜ื™ื™ืžืกื™ื ืง ื“ื™ื™ืžืึทืŸ ืื•ืŸ ื–ืขื ืขืŸ ื‘ืืฉืืคืŸ ืื•ื™ืฃ ื™ืขื“ืขืจ ื’ืขืจืึธื˜ืŸ ืกื™ื ืง.

ื“ื™ timedatectl ื‘ืึทืคึฟืขืœ ื”ืื˜ ืงื™ื™ืŸ ื•ื•ืขื’ ืฆื• ื ืขืžืขืŸ ื“ื™ ื•ื•ืขืจื˜ ืคื•ืŸ ื“ื™ ื™ื™ึทื–ื ื•ื•ืึทืจื’ ื–ื™ื™ื’ืขืจ ืคื•ืŸ ื“ื™ ืกื™ืกื˜ืขื ื–ื™ื™ื’ืขืจ. ืขืก ืงืขื ืขืŸ ื‘ืœื•ื™ื– ืฉื˜ืขืœืŸ ื“ื™ ืฆื™ื™ื˜ ืื•ืŸ ื“ืึทื˜ืข ืคึฟื•ืŸ ื“ื™ ื•ื•ืขืจื˜ ืืจื™ื™ืŸ ืื•ื™ืฃ ื“ื™ ื‘ืึทืคึฟืขืœืŸ ืฉื•ืจื”. ืื™ืจ ืงืขื ืขืŸ ืฉื˜ืขืœืŸ ื“ื™ RTC ืฆื• ื“ืขืจ ื–ืขืœื‘ื™ืงืขืจ ื•ื•ืขืจื˜ ื•ื•ื™ ื“ื™ ืกื™ืกื˜ืขื ืฆื™ื™ื˜ ื ื™ืฆืŸ ื“ื™ hwclock ื‘ืึทืคึฟืขืœ:

[root@testvm2 ~]# /sbin/hwclock --systohc --localtime
[root@testvm2 ~]# timedatectl
               Local time: Mon 2020-05-18 13:56:46 EDT  
           Universal time: Mon 2020-05-18 17:56:46 UTC  
                 RTC time: Mon 2020-05-18 13:56:46      
                Time zone: America/New_York (EDT, -0400)
System clock synchronized: yes                          
              NTP service: active                      
          RTC in local TZ: yes

ื“ื™ --localtime ืึธืคึผืฆื™ืข ื“ืขืจืฆื™ื™ืœื˜ ื“ื™ ื™ื™ึทื–ื ื•ื•ืึทืจื’ ื–ื™ื™ื’ืขืจ ืฆื• ื•ื•ื™ื™ึทื–ืŸ ื”ื™ื’ืข ืฆื™ื™ื˜, ื ื™ืฉื˜ UTC.

ืคืืจื•ื•ืืก ื˜ืึธืŸ ืื™ืจ ื“ืึทืจืคึฟืŸ RTC ื‘ื›ืœืœ?

ืงื™ื™ืŸ ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ืคื•ืŸ NTP ื•ื•ืขื˜ ืฉื˜ืขืœืŸ ื“ื™ ืกื™ืกื˜ืขื ื–ื™ื™ื’ืขืจ ืื™ืŸ ืกื˜ืึทืจื˜ืึทืคึผ ืฆื™ื™ื˜. ืื•ืŸ ืคืืจื•ื•ืืก RTC? ื“ืึธืก ืื™ื– ื ื™ืฉื˜ ืœืขื’ืึทืžืจืข ืืžืช: ื“ืึธืก ื•ื•ืขื˜ ืคึผืึทืกื™ืจืŸ ื ืึธืจ ืื•ื™ื‘ ืื™ืจ ื”ืึธื‘ืŸ ืึท ื ืขืฅ ืงืฉืจ ืฆื• ื“ื™ ืฆื™ื™ื˜ ืกืขืจื•ื•ืขืจ. ืึธื‘ืขืจ, ืคื™ืœืข ืกื™ืกื˜ืขืžืขืŸ ื˜ืึธืŸ ื ื™ื˜ ืฉื˜ืขื ื“ื™ืง ื”ืึธื‘ืŸ ืฆื•ื˜ืจื™ื˜ ืฆื• ืึท ื ืขืฅ ืคึฟืึทืจื‘ื™ื ื“ื•ื ื’, ืึทื–ื•ื™ ืึท ื™ื™ึทื–ื ื•ื•ืึทืจื’ ื–ื™ื™ื’ืขืจ ืื™ื– ื ื•ืฆื™ืง ืคึฟืึทืจ ืœื™ื ื•ืงืก ืฆื• ื ื•ืฆืŸ ืฆื• ืฉื˜ืขืœืŸ ื“ื™ ืกื™ืกื˜ืขื ืฆื™ื™ื˜. ื“ืึธืก ืื™ื– ื‘ืขืกืขืจ ื•ื•ื™ ืžืึทื ื™ื•ืึทืœื™ ื‘ืึทืฉื˜ืขื˜ื™ืงืŸ ื“ื™ ืฆื™ื™ื˜, ื›ืึธื˜ืฉ ืขืก ืงืขืŸ ืึธืคึผื ื™ื™ื’ืŸ ืคื•ืŸ ืคืึทืงื˜ื™ืฉ ืฆื™ื™ื˜.

ืกืึธืฃ

ื“ืขืจ ืึทืจื˜ื™ืงืœ ื”ืื˜ ืจื™ื•ื•ื™ื•ื“ ืขื˜ืœืขื›ืข ืžื›ืฉื™ืจื™ื ืคึฟืึทืจ ืžืึทื ื™ืคึผื™ืึทืœื™ื™ื˜ื™ื ื’ ื“ืึทื˜ืข, ืฆื™ื™ื˜ ืื•ืŸ ืฆื™ื™ื˜ ื–ืึธื ืขืก. ื“ื™ systemd-timesyncd ื’ืขืฆื™ื™ึทื’ ื’ื™ื˜ ืึท NTP ืงืœื™ืขื ื˜ ื•ื•ืึธืก ืงืขื ืขืŸ ืกื™ื ื’ืงืจืึทื ื™ื™ื– ื“ื™ ืฆื™ื™ื˜ ืื•ื™ืฃ ื“ื™ ื”ื™ื’ืข ื‘ืึทืœืขื‘ืึธืก ืžื™ื˜ ืึท NTP ืกืขืจื•ื•ืขืจ. ืึธื‘ืขืจ, systemd-timesyncd ื’ื™ื˜ ื ื™ืฉื˜ ืึท ืกืขืจื•ื•ืขืจ ื“ื™ื ืกื˜, ืึทื–ื•ื™ ืื•ื™ื‘ ืื™ืจ ื“ืึทืจืคึฟืŸ ืึท NTP ืกืขืจื•ื•ืขืจ ืื•ื™ืฃ ื“ื™ื™ืŸ ื ืขืฅ, ืื™ืจ ืžื•ื–ืŸ ื ื•ืฆืŸ ืขืคึผืขืก ืึทื ื“ืขืจืฉ, ืึทื–ืึท ื•ื•ื™ Chrony, ืฆื• ืฉืคึผื™ืœืŸ ื•ื•ื™ ืึท ืกืขืจื•ื•ืขืจ.

ืื™ืš ื‘ืขืกืขืจ ืฆื• ื”ืึธื‘ืŸ ืึท ืื™ื™ืŸ ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ืคึฟืึทืจ ืงื™ื™ืŸ ื“ื™ื ืกื˜ ืื•ื™ืฃ ืžื™ื™ืŸ ื ืขืฅ, ืึทื–ื•ื™ ืื™ืš ื ื•ืฆืŸ Chrony. ืื•ื™ื‘ ืื™ืจ ื˜ืึธืŸ ื ื™ื˜ ื“ืึทืจืคึฟืŸ ืึท ื”ื™ื’ืข NTP ืกืขืจื•ื•ืขืจ, ืึธื“ืขืจ ืื•ื™ื‘ ืื™ืจ ื˜ืึธืŸ ื ื™ื˜ ื”ืึธื‘ืŸ ืฆื• ื ื•ืฆืŸ Chrony ื•ื•ื™ ื“ืขืจ ืกืขืจื•ื•ืขืจ ืื•ืŸ systemd-timesyncd ื•ื•ื™ ื“ืขืจ SNTP ืงืœื™ืขื ื˜. ื ืึธืš ืึทืœืข, ืขืก ืื™ื– ื ื™ื˜ ื“ืึทืจืคึฟืŸ ืฆื• ื ื•ืฆืŸ ื“ื™ ื ืึธืš ืคึฟืขื™ึดืงื™ื™ื˜ืŸ ืคื•ืŸ Chrony ื•ื•ื™ ืึท ืงืœื™ืขื ื˜ ืื•ื™ื‘ ืื™ืจ ื–ืขื ื˜ ืฆื•ืคึฟืจื™ื“ืŸ ืžื™ื˜ ื“ื™ ืคืึทื ื’ืงืฉืึทื ืึทืœื™ื˜ื™ ืคื•ืŸ systemd-timesyncd.

ืืŸ ืื ื“ืขืจ ื˜ืึธืŸ: ืื™ืจ ื˜ืึธืŸ ื ื™ื˜ ื“ืึทืจืคึฟืŸ ืฆื• ื ื•ืฆืŸ ื“ื™ ืกื™ืกื˜ืขื ืžื›ืฉื™ืจื™ื ืฆื• ื™ื ืกื˜ืจื•ืžืขื ื˜ NTP. ืื™ืจ ืงืขื ื˜ ื ื•ืฆืŸ ืึทืŸ ืขืœื˜ืขืจืข ื•ื•ืขืจืกื™ืข ืคื•ืŸ โ€‹โ€‹โ€‹โ€‹ntpd, Chrony ืึธื“ืขืจ ืืŸ ืื ื“ืขืจ NTP ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ. ื ืึธืš ืึทืœืข, ืกื™ืกื˜ืขื ื‘ืืฉื˜ื™ื™ื˜ ืคื•ืŸ ืึท ื’ืจื•ื™ืก ื ื•ืžืขืจ ืคื•ืŸ ื‘ืึทื“ื™ื ื•ื ื’ืขืŸ; ืคื™ืœืข ืคื•ืŸ โ€‹โ€‹ื–ื™ื™ ื–ืขื ืขืŸ ืึทืคึผืฉืึทื ืึทืœ, ืึทื–ื•ื™ ืื™ืจ ืงืขื ืขืŸ ืงืขืจ ื–ื™ื™ ืึทื•ื•ืขืง ืื•ืŸ ื ื•ืฆืŸ ืขืคึผืขืก ืึทื ื“ืขืจืฉ ืึทื ืฉื˜ืึธื˜. ื“ืึธืก ืื™ื– ื ื™ืฉื˜ ืึท ืจื™ื–ื™ืง ืžืึทื ืึทืœื™ื˜ื™ืง ืคืึทืจื–ืขืขื ื™ืฉ. ืื™ืจ ืงืขืŸ ื ื™ืฉื˜ ื•ื•ื™ ืกื™ืกื˜ืขืž ืึธื“ืขืจ ื˜ื™ื™ืœืŸ ืคื•ืŸ ืขืก, ืึธื‘ืขืจ ืื™ืจ ื–ืึธืœ ืžืึทื›ืŸ ืึท ื™ื ืคืึธืจืžื“ ื‘ืึทืฉืœื•ืก.

ืื™ืš ื•ื•ื™ ืกื™ืกื˜ืขืื“ ืก ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ืคื•ืŸ NTP, ืึธื‘ืขืจ ืื™ืš ื‘ืขืกืขืจ Chrony ื•ื•ื™ื™ึทืœ ืขืก ืกื•ืฅ ืžื™ื™ืŸ ื“ืึทืจืฃ ื‘ืขืกืขืจ. ืขืก ืื™ื– ืœื™ื ื•ืงืก, ื‘ืขื™ื‘ื™ -)

ืื•ื™ืฃ ื“ื™ ืจืขื›ื˜ ืคื•ืŸ ื’ืึทื ืฆืข

VDSina ืึธืคืคืขืจืก ืกืขืจื•ื•ืขืจืก ืคึฟืึทืจ ืงื™ื™ืŸ ืึทืจื‘ืขื˜, ืึท ืจื™ื–ื™ืง ืกืขืœืขืงืฆื™ืข ืคื•ืŸ โ€‹โ€‹โ€‹โ€‹ืึธืคึผืขืจื™ื™ื˜ื™ื ื’ ืกื™ืกื˜ืขืžืขืŸ ืคึฟืึทืจ ืึธื˜ืึทืžืึทื˜ื™ืง ื™ื ืกื˜ืึทืœื™ืจื•ื ื’, ืขืก ืื™ื– ืžืขื’ืœืขืš ืฆื• ื™ื ืกื˜ืึทืœื™ืจืŸ ืงื™ื™ืŸ ืึทืก ืคึฟื•ืŸ ื“ื™ื™ืŸ ืื™ื™ื’ืขื ืข ื™ืกืึธ, ื‘ืืงื•ื•ืขื control panel ืื™ื™ื’ืขื ืข ืึทื ื˜ื•ื•ื™ืงืœื•ื ื’ ืื•ืŸ ื˜ืขื’ืœืขืš ืฆืึธืœื•ื ื’. ืฆื•ืจื™ืงืจื•ืคืŸ ืึทื– ืžื™ืจ ื”ืึธื‘ืŸ ืื™ื™ื‘ื™ืง ืกืขืจื•ื•ืขืจืก ื•ื•ืึธืก ื–ืขื ืขืŸ ื‘ืืฉื˜ื™ืžื˜ ื™ื™ื‘ื™ืง ๐Ÿ˜‰

ืœื™ื ื•ืงืก ืฆื™ื™ื˜ ืกื™ื ื’ืงืจืึทื ืึทื–ื™ื™ืฉืึทืŸ: NTP, Chrony ืื•ืŸ systemd-timesyncd

ืžืงื•ืจ: www.habr.com

ืœื™ื™ื’ืŸ ืึท ื‘ืึทืžืขืจืงื•ื ื’