Book Image

CentOS 7 Linux Server Cookbook - Second Edition

By : Jonathan Hobson
Book Image

CentOS 7 Linux Server Cookbook - Second Edition

By: Jonathan Hobson

Overview of this book

This book will provide you with a comprehensive series of starting points that will give you direct access to the inner workings of the latest CentOS version 7 and help you trim the learning curve to master your server. You will begin with the installation and basic configuration of CentOS 7, followed by learning how to manage your system, services and software packages. You will then gain an understanding of how to administer the file system, secure access to your server and configure various resource sharing services such as file, printer and DHCP servers across your network. Further on, we cover advanced topics such as FTP services, building your own DNS server, running database servers, and providing mail and web services. Finally, you will get a deep understanding of SELinux and you will learn how to work with Docker operating-system virtualization and how to monitor your IT infrastructure with Nagios. By the end of this book, you will have a fair understanding of all the aspects of configuring, implementing and administering CentOS 7 Linux server and how to put it in control.
Table of Contents (22 chapters)
CentOS 7 Linux Server Cookbook Second Edition
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Maintaining backups and taking snapshots


In this recipe, we will show you how to do data backups, on a regular basis, that will take snapshots of some of your system's directory using the crond daemon. This will run the rsync program at regular intervals to implement a fully automated backup solution.

Getting ready

To complete this recipe, you will require a working installation of the CentOS 7 operating system with root privileges and a console-based text editor of your choice. It is also advantageous if you have read the Synchronizing files and doing more with rsync and Scheduling tasks with cron recipes in this chapter to get a deeper understanding of used commands.

How to do it...

It's important to install the rsync program on your server before proceeding with this recipe.

  1. First, log in as root and create a directory where our backups will land:

    mkdir /backups
    
  2. Now, we will create the following shell script file and open it for editing:

    mkdir ~/bin;vi ~/bin/mybackup.sh
    
  3. Put in the following...