Book Image

Ubuntu Server Cookbook

By : Uday Sawant
Book Image

Ubuntu Server Cookbook

By: Uday Sawant

Overview of this book

Ubuntu is one of the most secure operating systems and defines the highest level of security as compared other operating system. Ubuntu server is a popular Linux distribution and the first choice when deploying a Linux server. It can be used with a $35 Raspberry Pi to top-notch, thousand-dollar-per-month cloud hardware. Built with lists that there are 4 million + websites built using Ubuntu. With its easy-to-use package management tools and availability of well-known packages, we can quickly set up our own services such as web servers and database servers using Ubuntu. This book will help you develop the skills required to set up high performance and secure services with open source tools. Starting from user management and an in-depth look at networking, we then move on to cover the installation and management of web servers and database servers, as well as load balancing various services. You will quickly learn to set up your own cloud and minimize costs and efforts with application containers. Next, you will get to grips with setting up a secure real-time communication system. Finally, we’ll explore source code hosting and various collaboration tools. By the end of this book, you will be able to make the most of Ubuntu’s advanced functionalities.
Table of Contents (20 chapters)
Ubuntu Server Cookbook
About the Author

Managing LXD containers – advanced options

In this recipe, we will learn about some advanced options provided by LXD.

How to do it…

Follow these steps to deal with LXD containers:

  1. Sometimes, you may need to clone a container and have it running as a separate system. LXD provides a copy command to create such clones:

    $ lxc copy c1 c2   # lxc copy source destination

    You can also create a temporary copy with the --ephemeral flag and it will be deleted after one use.

  2. Similarly, you can create a container, configure it as per you requirements, have it stored as an image, and use it to create more containers. The lxc publish command allows you to export existing containers as a new image. The resulting image will contain all modifications from the original container:

    $ lxc publish c1 --alias nginx   # after installing nginx

    The container to be published should be in the stopped state. Alternatively, you can use the --force flag to publish a running container, which will internally stop the container...