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

Introducing common Linux diagnostic tools for troubleshooting

The openness of Linux is one of its best assets. This opened the door to an extensive number of solutions that can be used for any task at hand. Hence, many diagnostic tools are available to Linux system administrators. Depending on which part of your system you would like to diagnose, there are several tools available. Troubleshooting is essentially problem solving, based on diagnostics generated by specific tools. To reduce the number of diagnostic tools to cover, we will narrow down the issues to the following categories for this section:

  • Boot issues
  • General system issues
  • Network issues
  • Hardware issues

There are specific diagnostic tools for each of these categories. We will start by showing you some of the most widely used ones.

Tools for troubleshooting boot issues

To understand the issues that may affect the boot process, it is important to know how the boot process works. We have...