Book Image

Mastering Linux Administration

By : Alexandru Calcatinge, Julian Balog
Book Image

Mastering Linux Administration

By: Alexandru Calcatinge, Julian Balog

Overview of this book

Linux plays a significant role in modern data center management and provides great versatility in deploying and managing your workloads on-premises and in the cloud. This book covers the important topics you need to know about for your everyday Linux administration tasks. The book starts by helping you understand the Linux command line and how to work with files, packages, and filesystems. You'll then begin administering network services and hardening security, and learn about cloud computing, containers, and orchestration. Once you've learned how to work with the command line, you'll explore the essential Linux commands for managing users, processes, and daemons and discover how to secure your Linux environment using application security frameworks and firewall managers. As you advance through the chapters, you'll work with containers, hypervisors, virtual machines, Ansible, and Kubernetes. You'll also learn how to deploy Linux to the cloud using AWS and Azure. By the end of this Linux book, you'll be well-versed with Linux and have mastered everyday administrative tasks using workflows spanning from on-premises to the cloud. If you also find yourself adopting DevOps practices in the process, we'll consider our mission accomplished.
Table of Contents (20 chapters)
Section 1: Linux Basic Administration
Section 2: Advanced Linux Server Administration
Section 3: Cloud Administration


If you managed to skim through some parts of this chapter, you might want to recap on a few essential details about Linux processes and daemons:

  1. Think of a few process types. How would they compare to each other?
  2. Think of the anatomy of a process. Can you come up with a few essential process attributes (or fields in the ps command-line output) that you may look for when inspecting processes?
  3. Can you think of a few process states and some of the dynamics or possible transitions between them?
  4. If you are looking for a process that takes up most of the CPU on your system, how would you proceed?
  5. Can you write a simple script and make it a long-lived background process?
  6. Enumerate at least four process signals that you can think of. When or how would those signals be invoked?
  7. Think of a couple of IPC mechanisms. Try to come up with some pros and cons for them.