Book Image

Linux Service Management Made Easy with systemd

4.5 (2)
Book Image

Linux Service Management Made Easy with systemd

4.5 (2)

Overview of this book

Linux Service Management Made Easy with systemd will provide you with an in-depth understanding of systemd, so that you can set up your servers securely and efficiently.This is a comprehensive guide for Linux administrators that will help you get the best of systemd, starting with an explanation of the fundamentals of systemd management.You’ll also learn how to edit and create your own systemd units, which will be particularly helpful if you need to create custom services or timers and add features or security to an existing service. Next, you'll find out how to analyze and fix boot-up challenges and set system parameters. An overview of cgroups that'll help you control system resource usage for both processes and users will also be covered, alongside a practical demonstration on how cgroups are structured, spotting the differences between cgroups Version 1 and 2, and how to set resource limits on both. Finally, you'll learn about the systemd way of performing time-keeping, networking, logging, and login management. You'll discover how to configure servers accurately and gather system information to analyze system security and performance. By the end of this Linux book, you’ll be able to efficiently manage all aspects of a server running the systemd init system.
Table of Contents (23 chapters)
1
Section 1: Using systemd
12
Section 2: Understanding cgroups
16
Section 3: Logging, Timekeeping, Networking, and Booting

Questions

Answer the following questions to test your knowledge of this chapter:

  1. In the chrony.conf file, which of the following lines will allow chronyd to function as a time server?

    A. network 192.168.0.0/24

    B. allow 192.168.0.0/24

    C. permit 192.168.0.0/24

    D. listen 192.168.0.0/24

  2. How would you set up systemd-timesyncd to function as a time server? (We will assume that we're on the 192.168.0.0/24 network.)

    A. Add a network 192.168.0.0/24 line to the timesyncd.conf file.

    B. Add a permit 192.168.0.0/24 line to the timesyncd.conf file.

    C. Add an allow 192.168.0.0/24 line to the timesyncd.conf file.

    D. You can't.

  3. For dealing with PTP, which of the following clock types allows messages to flow between the PTP master clock and the client machines on the same VLAN?

    A. Boundary clocks

    B. Grandmaster clocks

    C. Router clocks

    D. Transparent clocks

  4. When dealing with PTP, which service causes a machine's system clock to synchronize with the PTP hardware clock in the network...