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)

Managing virtual machines via the command line

In this chapter, I showed you how to manage virtual machines with virt-manager. This is great if you have a secondary machine with a graphical user interface running Linux as its operating system. But what do you do if such a machine isn't available, and you'd like to perform simple tasks such as rebooting a virtual machine or checking to see which virtual machines are running on the server?

On the virtual machine server itself, you have access to the virsh suite of commands, which will allow you to manage virtual machines even if a GUI isn't available. To use these commands, simply connect to the machine that stores your virtual machines via SSH. What follows are some easy examples to get you started. Here's the first one:

virsh list
Showing running virtual machines with the virsh list command

With one command...