Book Image

Mastering Ubuntu Server - Fourth Edition

By : Jay LaCroix
4.7 (7)
Book Image

Mastering Ubuntu Server - Fourth Edition

4.7 (7)
By: Jay LaCroix

Overview of this book

Ubuntu Server is taking the server world by storm - and for a good reason! The server-focused spin of Ubuntu is a stable, flexible, and powerful enterprise-class distribution of Linux with a focus on running servers both small and large. Mastering Ubuntu Server is a book that will teach you everything you need to know in order to manage real Ubuntu-based servers in actual production deployments. This book will take you from initial installation to deploying production-ready solutions to empower your small office network, or even a full data center. You'll see examples of running an Ubuntu Server in the cloud, be walked through set up popular applications (such as Nextcloud), host your own websites, and deploy network resources such as DHCP, DNS, and others. You’ll also see how to containerize applications via LXD to maximize efficiency and learn how to build Kubernetes clusters. This new fourth edition updates the popular book to cover Ubuntu 22.04 LTS, which takes advantage of the latest in Linux-based technologies. By the end of this Ubuntu book, you will have gained all the knowledge you need in order to work on real-life Ubuntu Server deployments and become an expert Ubuntu Server administrator who is well versed in its feature set.
Table of Contents (26 chapters)
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Index

Container Orchestration

In the previous chapter, we started learning concepts around containerization. We’ve learned what containers are and how they differ from Virtual Machines (VMs), as well as how to run two different types of containers (Docker and LXD). As you are now aware, containers are typically lightweight (which means you run a larger number of them than VMs on the same hardware) and are easy to manage with a command syntax that’s rather logical, such as docker run myapp to launch a container named myapp. Depending on the size of your organization, you may only need to run one or two containers to suit your needs, or perhaps you plan on scaling up to hundreds of them. While it’s rather simple to maintain a small number of containers, the footprint can quickly expand and become much harder to keep track of.

In this chapter, we’ll start looking into the concept of Container Orchestration, which can help us to better maintain the containers...