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 and configuring Syslog-ng


By default, with the installation of CentOS 7, there will be Rsyslog installed for storing the log of the system and its applications. Luckily, we will have all our system log files stored and organized the way syslog wants. We will be using these log files with the installation of Syslog-ng, and we will have them organized in a more suitable way:

First, before starting the installation, we need to set up the EPEL repository:

$ sudo yum install epel-release

Tip

All of the upcoming package repository checking and application availability is optional. We can always proceed with the installation of Syslog-ng.

To verify that the EPEL repository has been added, we can use the following command:

$ sudo yum repolist

This command shows the list of repositories available for the YUM package manager to download and install the packages from. Now, after having the EPEL repository, we need to check whether any change needs to be made after adding it. So, we need to...