Chapter 16: Understanding Timekeeping with systemd

On modern computer systems, it's vitally important to maintain accurate time. To do that, our computers obtain the current time from a time server while using some implementation of the Network Time Protocol (NTP). In this chapter, we'll look at these various implementations and discuss the pros and cons of each.

In this chapter, we will cover the following topics:

  • Understanding the importance of accurate time
  • Comparing NTP implementations
  • Understanding chrony
  • Understanding systemd-timesyncd
  • Understanding the Precision Time Protocol (PTP)

All right, it's time to get started!

Technical requirements

Timekeeping is done differently in the Ubuntu and RHEL worlds. So, we'll be using both Ubuntu ...

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