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

Chapter 14: Using journald

In this chapter, we will turn our attention to a new way of logging. Although the journald logging system isn't part of systemd's init system, it is part of the systemd ecosystem. The journald system has its advantages over the old rsyslog system. However, there are also a couple of big reasons why we still haven't completed the transition to journald. Still, journald is an important tool that can help a busy Linux administrator easily see what's going on.

Specific topics in this chapter include:

  • Understanding the pros and cons of rsyslog
  • Understanding the pros and cons of journald
  • Understanding journald on Ubuntu
  • Using journalctl
  • Sealing journald log files for security
  • Setting up remote logging with journald