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

Configuring Mytop for a MySQL database


Mytop is an open source solution that helps monitor the MySQL database's activities and performance, or what we now know as MariaDB for CentOS 7. It is a non-GUI monitoring tool. Therefore, it kind of provides an interphase through the shell command line.

To install Mytop, we should make sure that the installation is going to be at the same server where the MariaDB database server is installed. Then we add the EPEL repository, as follows:

$ sudo yum install epel-release

Next, we execute the installation using yum:

$ sudo yum install mytop

For the configuration, we only need to create a configuration file at the root folder:

$ sudo nano /root/.mytop

Then we type the following text inside it:

host=localhost
db=mysql
delay=3
port=3306
socket=
batchmode=0
color=1
idle=1

This is a personalized configuration that will be used during the execution of the program.

To run it, we need to type in the following command:

$ sudo mytop --prompt

Then we need to type...