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

Exploring basic networking

Today, it's almost inconceivable to imagine a computer not connected to some sort of network or the internet. Our ever-increasing online presence, cloud computing, mobile communications, and Internet of Things (IoT) would not be possible without the highly distributed, high-speed, and scalable networks serving the underlying data traffic, yet the basic networking principles behind the driving force of the modern-day internet are decades old. Obviously, networking and communication paradigms will continue to evolve, but some of the original primitives and concepts will still have a long-lasting effect in shaping the building blocks of future communications.

This section will introduce you to a few of these networking essentials and, hopefully, spark your curiosity for further exploration. Let's start with computer networks.

Computer networks

A computer network is a group of two or more computers (or nodes) connected via a physical medium...