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Linux Service Management Made Easy with systemd

Linux Service Management Made Easy with systemd

4.7 (20)
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Linux Service Management Made Easy with systemd

Linux Service Management Made Easy with systemd

4.7 (20)

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)
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1
Section 1: Using systemd
12
Section 2: Understanding cgroups
16
Section 3: Logging, Timekeeping, Networking, and Booting

Changing the default systemd editor

So far, I've been showing you how to do all of this in the nano text editor, which is the default systemd editor for most modern Linux distros. But, what if you don't like nano, and would prefer to use something else? Let's say that Vim is your favorite text editor, and you want to use it instead of nano.

One way to use an alternate text editor is to specify the alternate editor each time you run a systemctl edit command, like this:

[donnie@localhost ~]$ sudo EDITOR=vim systemctl edit --full sshd
[donnie@localhost ~]$

That works, but doing it every time you want to run a systemctl edit command could get a bit tiresome. Fortunately, changing the default editor is easy, once you know how to do it.

First, edit the .bashrc file that's in your own home directory. At the very bottom of the file, add this line:

export SYSTEMD_EDITOR=vim

After saving the file, reload the new configuration:

[donnie@localhost ~]$ source...

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