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

Understanding filesystem types in Linux

When talking about physical media, such as hard drives or external drives, we are not referring to the directory structure. Here, we are talking about the structures that are created on the physical drive when formatting and/or partitioning it. Those structures, depending on their type, are known as filesystems, and they determine how the files are managed when stored on the drive.

There are several types of filesystems, some being native to the Linux ecosystem, while others are not, such as specific Windows or macOS filesystems. In this section, we will describe only the Linux-native filesystems.

The most widely used filesystems in Linux are the Extended filesystems, known as Ext, Ext2, Ext3, and Ext4, the XFS filesystem, ZFS, and btrfs (short for B-tree filesystem). Each of these have their strengths and weaknesses, but they are all able to do the job they were designed for. The Extended filesystems are the ones that were most widely...