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

Implementing BIND as a DNS server


BIND is the most widely used open source name server application. It helps implement the Domain Name System (DNS) protocols for the Internet. It provides a robust and stable platform on which to build a distributed computing system, with knowledge that those systems are fully compliant with published DNS standards. It helps resolve queries about names by sending those questions to the appropriate servers and responding appropriately to the servers' replies.

As an example of the implementation of BIND, we will set up an internal DNS server to resolve some public IP addresses inside the network to simplify the mapping inside a large environment.

We need the following prerequisites to implement BIND:

  • One server to have BIND installed and configured on it

  • Two machines, either servers or simple workstations, to test the DNS service

  • Root privilege to be able to set up BIND and configure the network to resolve from our internal DNS server

First, we will start by installing...