Book Image

Mastering CentOS 7 Linux Server

By : Mohamed Alibi, BHASKARJYOTI ROY
Book Image

Mastering CentOS 7 Linux Server

By: Mohamed Alibi, BHASKARJYOTI ROY

Overview of this book

Most server infrastructures are equipped with at least one Linux server that provides many essential services, both for a user's demands and for the infrastructure itself. Setting up a sustainable Linux server is one of the most demanding tasks for a system administrator to perform. However, learning multiple, new technologies to meet all of their needs is time-consuming. CentOS 7 is the brand new version of the CentOS Linux system under the RPM (Red Hat) family. It is one of the most widely-used operating systems, being the choice of many organizations across the world. With the help of this book, you will explore the best practices and administration tools of CentOS 7 Linux server along with implementing some of the most common Linux services. We start by explaining the initial steps you need to carry out after installing CentOS 7 by briefly explaining the concepts related to users, groups, and right management, along with some basic system security measures. Next, you will be introduced to the most commonly used services and shown in detail how to implement and deploy them so they can be used by internal or external users. Soon enough, you will be shown how to monitor the server. We will then move on to master the virtualization and cloud computing techniques. Finally, the book wraps up by explaining configuration management and some security tweaks. All these topics and more are covered in this comprehensive guide, which briefly demonstrates the latest changes to all of the services and tools with the recent shift from CentOS 6 to CentOS 7.
Table of Contents (16 chapters)
Mastering CentOS 7 Linux Server
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Setting up Xen on CentOS 7


Xen is an open source solution used to run multiple virtual systems on one machine. It supports both paravirtualization and hardware-assisted full-virtualization. Xen is a very powerful virtualization solution. It offers the capacity to use both virtualization technologies at the same time to always answer the user's demands.

To create our virtualization environment using Xen, we need to make sure that the Xen Hypervisor will boot just before the machine's own kernel to have access to as much physical hardware as possible, so it can be used to serve our environment's virtual machines.

In this section, we are going to set up Xen4 for CentOS 7. Xen4 is not supported by the default CentOS 7 repository, so we need to add the CentOS Xen repository. But first, we need to make sure that we have some packages installed. These will be needed later during the installation of Xen:

$ sudo yum install bridge-utils SDL net-tools

Then we add the latest...