Book Image

Mastering Ubuntu Server. - Second Edition

By : Jay LaCroix
Book Image

Mastering Ubuntu Server. - Second Edition

By: Jay LaCroix

Overview of this book

Ubuntu Server has taken the data centers by storm. Whether you're deploying Ubuntu for a large-scale project or for a small office, it is a stable, customizable, and powerful Linux distribution that leads the way with innovative and cutting-edge features. For both simple and complex server deployments, Ubuntu's flexible nature can be easily adapted to meet to the needs of your organization. With this book as your guide, you will learn all about Ubuntu Server, from initial deployment to creating production-ready resources for your network. The book begins with the concept of user management, group management, and filesystem permissions. Continuing into managing storage volumes, you will learn how to format storage devices, utilize logical volume management, and monitor disk usage. Later, you will learn how to virtualize hosts and applications, which will cover setting up KVM/QEMU, as well as containerization with both Docker and LXD. As the book continues, you will learn how to automate configuration with Ansible, as well as take a look at writing scripts. Lastly, you will explore best practices and troubleshooting techniques when working with Ubuntu Server that are applicable to real-world scenarios. By the end of the book, you will be an expert Ubuntu Server administrator who is well-versed in its advanced concepts.
Table of Contents (21 chapters)

Using symbolic and hard links

With Linux, we can link files to other files, which gives us quite a bit of flexibility with how we can manage our data. Symbolic and hard links are very similar, but to explain them, you'll first need to understand the concept of inodes.

An inode is a data object that contains metadata regarding files within your filesystem. Although a full walkthrough of the concept of inodes are beyond the scope of this book, think of an inode as a type of database object, containing metadata for the actual items you're storing on your disk. Information stored in inodes are details such as the owner of the file, permissions, last modified date, and type (whether it is a directory or a file). But as a refresher, an inode is a data object that contains metadata regarding files within your filesystem. Inodes are represented by an integer number, which you...