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

Cloud computing services


After explaining the different types of cloud computing, we should now have a look at how those services are provided. For that, we categorize them into three major types: public cloud, private cloud, and hybrid cloud.

Public cloud

We will start by introducing the public cloud. The public cloud, as its name suggests, is a publicly available cloud. Usually, a public cloud service is scalable on how much the user is willing to pay, either for resources or special services. Since it is on the cloud, users don't have to worry about hardware purchases, management, and maintenance. Most services provided as a public cloud are SaaS, with a small number as PaaS. Most of those services are available on demand. Usually, the users are charged for the resources they are using (CPU, memory, storage, Internet bandwidth) more than for the service itself.

Resources sharing on a public cloud appear when multiple users access the same service...