Author: Answertopia

Along with acting as a web server, email is one of the primary uses of an Ubuntu system, particularly in business environments. Given both the importance and popularity of email it is surprising to some people to find out how complex the email structure is on a Linux system and this complexity can often be…

The Apache web server is among the many packages that make up the Ubuntu operating system. The scalability and resilience of Ubuntu make it an ideal platform for hosting even the most heavily trafficked websites. This chapter will explain how to configure an Ubuntu system using Apache to act as a web server, including secure…

Now that the basics of Linux Containers have been covered in the previous chapter, this chapter will demonstrate how to create and manage containers using the Podman, Skopeo, and Buildah tools on Ubuntu. It is intended that by the end of this chapter, you will have a clearer understanding of how to create and manage…

The preceding chapters covered the concept of virtualization, emphasizing creating and managing virtual machines using KVM. This chapter will introduce a related technology in the form of Linux Containers. While there are some similarities between virtual machines and containers, key differences will be outlined in this chapter, along with an introduction to the concepts and…

In previous chapters, we have covered the installation and configuration of KVM-based guest operating systems on Ubuntu. This chapter is dedicated to exploring some additional areas of the virsh tool that have not been covered in previous chapters and how it may be used to manage KVM-based guest operating systems from the command line. The…

By default, the KVM virtualization environment on Ubuntu creates a virtual network to which virtual machines may connect. It is also possible to configure a direct connection using a MacVTap driver. However, as outlined in the chapter entitled An Overview of Ubuntu 22.04 Virtualization Techniques, this approach does not allow the host and guest systems…

In the previous chapters, we explored the creation of KVM guest operating systems on an Ubuntu host using Cockpit and the virt-manager graphical tool. This chapter will focus on creating KVM-based virtual machines using the virt-install and virsh command-line tools. These tools provide all the capabilities of the virt-manager and Cockpit options with the added…

KVM-based virtual machines can easily be configured on Ubuntu using the virt-install command-line tool, the virt-manager GUI tool, or the Virtual Machines module of the Cockpit web console. This chapter will use Cockpit to install an operating system as a KVM guest on an Ubuntu host. The chapter titled Creating Ubuntu 22.04 KVM Virtual Machines…

Earlier versions of Ubuntu provided two virtualization platforms: Kernel-based Virtual Machine (KVM) and Xen. In recent releases, support for Xen has been removed, leaving KVM as the only bundled virtualization option supplied with Ubuntu. In addition to KVM, third-party solutions are available in products such as VMware and Oracle VirtualBox. Since KVM is supplied with…

Virtualization is generically defined as the ability to run multiple operating systems simultaneously on a single computer system. While not necessarily a new concept, Virtualization has come to prominence in recent years because it provides a way to fully utilize the CPU and resource capacity of a server system while providing stability (in that if…