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

  1. What is a target?

    a) It's just another name for the old-fashioned runlevels.

    b) It's a unit that groups together other units for a specific purpose.

    c) It's a unit that starts a service.

    d) It's a unit that listens for incoming network connections.

  2. What is a passive target?

    a) It's a target that you can't start yourself.

    b) It's a placeholder target that doesn't do anything.

    c) A passive target is configured with the TargetMode=passive line.

    d) It's a target that just runs in the background.

  3. How would you change from graphical mode to text mode?

    a) sudo systemctl isolate text-mode

    b) sudo systemctl 3

    c) sudo systemctl isolate multi-user

    d) sudo runlevel multi-user

  4. What is a major difference between SysV runlevels and systemd targets?

    a) SysV runlevels depend upon each other. systemd targets are self-contained units.

    b) systemd targets depend upon each other. Each SysV runlevel has its own complete list of services to run.

    c)...