2023年3月23日 · The ntpd program is an operating system daemon that synchronizes the system clock to remote NTP time servers or local reference clocks. It is a complete implementation of NTP version 4 defined by RFC 5905, but also retains compatible with version 3 defined by RFC 1305 and versions 1 and 2, defined by RFC 1059 and RFC 1119, respectively.

2024年12月17日 · The ntpd command serves as the official NTP (Network Time Protocol) daemon, which is responsible for synchronizing the system clock to either remote time servers or local reference clocks. Time synchronization is crucial for computers, both to keep logs accurate and to ensure system processes are correctly time-stamped.

In Linux systems, NTP is implemented by a daemon running in user space. The default NTP user space daemon in Red Hat Enterprise Linux 7 is chronyd. It must be disabled if you want to use the ntpd daemon. See Chapter 18, Configuring NTP Using the chrony Suite for information on chrony.

2025年1月8日 · How to check NTP is working? ntpq – standard NTP query program for Linux and Unix. ntpstat – show network time synchronisation status for Unix and Linux. timedatectl – show or set info about ntp using systemd as init under Linux. …

2022年1月11日 · NTPD uses NTP ( network time protocol ) to access a specified time server over the internet. Later, it will keep your system time synchronized without your further intervention.

The ntpd program is an operating system daemon which sets and maintains the system time of day in synchronism with Internet standard time servers.

The ntpd utility is an operating system daemon which sets and maintains the system time of day in synchronism with Internet standard time servers.

Network Time Protocol is the most common method to synchronize the software clock of a GNU/Linux system with internet time servers. It is designed to mitigate the effects of variable network latency and can usually maintain time to within tens of …

The ntpd program is an operating system daemon that synchronises the system clock with remote NTP time servers or local reference clocks.

2022年6月27日 · This section will try to explain how NTP will construct and maintain a working time synchronization network. To help understand the details of planning, configuring, and maintaining NTP, some basic concepts are presented here. The focus in this section is on theory. 5.1.1.1 What is a reference clock? 5.1.1.2 How will NTP use a reference clock?