Book Image

Mastering Ubuntu Server

By : Jay LaCroix
Book Image

Mastering Ubuntu Server

By: Jay LaCroix

Overview of this book

Ubuntu is a Debian-based Linux operating system, and has various versions targeted at servers, desktops, phones, tablets and televisions. The Ubuntu Server Edition, also called Ubuntu Server, offers support for several common configurations, and also simplifies common Linux server deployment processes. With this book as their guide, readers will be able to configure and deploy Ubuntu Servers using Ubuntu Server 16.04, with all the skills necessary to manage real servers. The book begins with the concept of user management, group management, as well as file-system permissions. To manage your storage on Ubuntu Server systems, you will learn how to add and format storage and view disk usage. Later, you will also learn how to configure network interfaces, manage IP addresses, deploy Network Manager in order to connect to networks, and manage network interfaces. Furthermore, you will understand how to start and stop services so that you can manage running processes on Linux servers. The book will then demonstrate how to access and share files to or from Ubuntu Servers. You will learn how to create and manage databases using MariaDB and share web content with Apache. To virtualize hosts and applications, you will be shown how to set up KVM/Qemu and Docker and manage virtual machines with virt-manager. Lastly, you will explore best practices and troubleshooting techniques when working with Ubuntu Servers. By the end of the book, you will be an expert Ubuntu Server user well-versed in its advanced concepts.
Table of Contents (22 chapters)
Mastering Ubuntu Server
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 13. Troubleshooting Ubuntu Servers

So far, have we covered many topics, ranging from installing software to setting up services to provide value to our network. But what about when things go wrong? While it's impossible for us to account for every possible problem that may come up, there are some common places to look for clues during a time in which something goes wrong and a process isn't behaving quite as you expect it to. In this chapter, we'll take a look at some common starting points and techniques when it comes to troubleshooting issues with our servers.

In this chapter, we will cover:

  • Evaluating the problem space

  • Conducting a root-cause analysis

  • Viewing system logs

  • Tracing network issues

  • Troubleshooting resource issues

  • Diagnosing defective RAM