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)

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 when 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