Book Image

Mastering Ubuntu Server - Fourth Edition

By : Jay LaCroix
4.8 (6)
Book Image

Mastering Ubuntu Server - Fourth Edition

4.8 (6)
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)
24
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25
Index

Setting up a secondary database server

Redundancy is an amazing thing. If a primary server fails for some reason, you can keep your applications running by having a secondary database server available in case the original meets its demise. Of course, you can always create regular backups of your database servers and restore if necessary, but it’s very hard to keep up with databases that are always changing, so backups have a tendency to become stale quite fast. A secondary database server enables you to have a copy that is always up to date. This doesn’t mean that you no longer need backups, but it does give you another option for recovery when faced with a problem.

The industry is moving away from terms like “Master” and “Slave” to describe a primary and secondary server. In this chapter and moving forward, we will use the terms “Primary” and “Secondary” to describe the relationship of one main database server...