Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
CentOS 7 Linux Server Cookbook, Second Edition
CentOS 7 Linux Server Cookbook, Second Edition

CentOS 7 Linux Server Cookbook, Second Edition: Get your CentOS server up and running with this collection of more than 80 recipes created for CentOS 7 - essential for Linux fans! , Second Edition

eBook
€22.99 €32.99
Paperback
€41.99
Subscription
Free Trial
Renews at €18.99p/m

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
OR
Modal Close icon
Payment Processing...
tick Completed

Shipping Address

Billing Address

Shipping Methods
Table of content icon View table of contents Preview book icon Preview Book

CentOS 7 Linux Server Cookbook, Second Edition

Chapter 2. Configuring the System

In this chapter, we will cover the following topics:

  • Navigating text files with less
  • Introduction to Vim
  • Speaking the right language
  • Synchronizing the system clock with NTP and the chrony suite
  • Setting your hostname and resolving the network
  • Becoming a superuser
  • Building a static network connection
  • Customizing your system banners and messages
  • Priming the kernel

Introduction

This chapter is a collection of recipes that covers the basic practice of establishing the basic needs of a server. For many, building a server can often seem to be a daunting task, and so the purpose of this chapter is to provide you with an instant method to achieve the desired goals.

Navigating text files with less

Throughout this book, you will often use programs and tools that use the program less or a less-like navigation to view and read file content or display output. At first, the control can seem a bit unintuitive .Here, in this recipe, we will show you the basics of how to navigate through a file using less controls.

Getting ready

To complete this recipe, you will require a working installation of the CentOS 7 operating system with root privileges.

How to do it...

  1. To begin, log in as root and type the following command to open a program that uses less for navigation:
    man man
    
  2. To navigate, press the up and down key to scroll up and down one line at a time, the spacebar to scroll down a page, and the b key to scroll up a page. You can search within the text using the forward slash key, /,followed by the search term, then press Return to search. Press n to jump to the next search result. Press the q key to exit.

How it works...

Here, in this short recipe, we have shown...

Introduction to Vim

In this recipe, we will give you a very brief introduction to the text editor, Vim, which is used as the standard text editor throughout this book. You can also use any other text editor you prefer, such as nano or emacs, instead.

Getting ready

To complete this recipe, you will require a working installation of the CentOS 7 operating system with root privileges.

How to do it...

We will start this recipe by installing the vim-enhanced package, as it contains a tutorial you can use to learn working with Vim:

  1. To begin, log in as root and install the following package:
    yum install vim-enhanced
    
  2. Afterwards, type the following command to start the Vim tutorial:
    vimtutor
    
  3. This will open the Vim tutorial in the Vim editor. To navigate, press the up and down key to scroll up and down single-line wise. To exit the tutorial, press the Esc key, then type :q!, followed by the Return key to exit.
  4. You should now read through the file and go through the lessons to get a basic understanding of...

Speaking the right language

In this recipe, we will show you how to change the language settings of your CentOS 7 installation for the whole system and for single users. The need to change this is rare but can be important, for example if we accidentally chose the wrong language during installation.

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. You should have read the Navigating text files with less recipe, because some commands in this recipe will use less for printing output.

How to do it...

There are two categories of settings that you have to adjust if you want to change the system-wide language settings of your CentOS 7 system. We begin by changing the system locale information and then the keyboard settings:

  1. To begin, log in as root and type the following command to show the current locale settings for the console, graphical window managers (X11 layout...

Synchronizing the system clock with NTP and the chrony suite

In this recipe, we will learn how to synchronize the system clock with an external time server using the Network Time Protocol (NTP) and the chrony suite. From the need to time-stamp documents, e-mails, and log files, to securing, running, and debugging a network, or to simply interact with shared devices and services, everything on your server is dependent on maintaining an accurate system clock, and it is the purpose of this recipe to show you how this can be achieved.

Getting ready

To complete this recipe, you will require a working installation of the CentOS 7 operating system with root privileges, a console-based text editor of your choice, and a connection to the Internet to facilitate downloading additional packages.

How to do it...

In this recipe, we will use the chrony service to manage our time synchronization. As chrony is not installed by default on CentOS minimal, we will start this recipe by installing it:

  1. To begin, log...

Setting your hostname and resolving the network

The process of setting the hostname is typically associated with the installation process. If you ever need to change it or your server's Domain Name System (DNS) resolver, this recipe will show you how.

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.

How to do it...

To begin this recipe, we shall start by accessing the system as root and opening the following file in order to name or rename your current server's hostname:

  1. Log in as root and type in the following command to see the current hostname:
    hostnamectl status
    
  2. Now, change the hostname value to your preferred name. For example, if you want to call your server jimi, you would type (change appropriately):
    hostnamectl set-hostname jimi
    

    Note

    Static hostnames are case-sensitive and restricted to using an Internet-friendly alphanumeric string of text. The...

Introduction


This chapter is a collection of recipes that covers the basic practice of establishing the basic needs of a server. For many, building a server can often seem to be a daunting task, and so the purpose of this chapter is to provide you with an instant method to achieve the desired goals.

Navigating text files with less


Throughout this book, you will often use programs and tools that use the program less or a less-like navigation to view and read file content or display output. At first, the control can seem a bit unintuitive .Here, in this recipe, we will show you the basics of how to navigate through a file using less controls.

Getting ready

To complete this recipe, you will require a working installation of the CentOS 7 operating system with root privileges.

How to do it...

  1. To begin, log in as root and type the following command to open a program that uses less for navigation:

    man man
    
  2. To navigate, press the up and down key to scroll up and down one line at a time, the spacebar to scroll down a page, and the b key to scroll up a page. You can search within the text using the forward slash key, /,followed by the search term, then press Return to search. Press n to jump to the next search result. Press the q key to exit.

How it works...

Here, in this short recipe, we have shown...

Introduction to Vim


In this recipe, we will give you a very brief introduction to the text editor, Vim, which is used as the standard text editor throughout this book. You can also use any other text editor you prefer, such as nano or emacs, instead.

Getting ready

To complete this recipe, you will require a working installation of the CentOS 7 operating system with root privileges.

How to do it...

We will start this recipe by installing the vim-enhanced package, as it contains a tutorial you can use to learn working with Vim:

  1. To begin, log in as root and install the following package:

    yum install vim-enhanced
    
  2. Afterwards, type the following command to start the Vim tutorial:

    vimtutor
    
  3. This will open the Vim tutorial in the Vim editor. To navigate, press the up and down key to scroll up and down single-line wise. To exit the tutorial, press the Esc key, then type :q!, followed by the Return key to exit.

  4. You should now read through the file and go through the lessons to get a basic understanding of...

Speaking the right language


In this recipe, we will show you how to change the language settings of your CentOS 7 installation for the whole system and for single users. The need to change this is rare but can be important, for example if we accidentally chose the wrong language during installation.

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. You should have read the Navigating text files with less recipe, because some commands in this recipe will use less for printing output.

How to do it...

There are two categories of settings that you have to adjust if you want to change the system-wide language settings of your CentOS 7 system. We begin by changing the system locale information and then the keyboard settings:

  1. To begin, log in as root and type the following command to show the current locale settings for the console, graphical window managers (X11 layout...

Left arrow icon Right arrow icon

Key benefits

  • A practical guide to install, configure, administer and maintain CentOS 7 servers
  • An in-depth guide to the CentOS 7 operating system, exploring its various new features and changes in server administration
  • Presents tricks and solutions to tackle common server issues with the help of practical examples and real-life scenarios

Description

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.

Who is this book for?

This book is targeted at beginner and more experienced system administrators alike who want to use CentOS as their server solution. Readers do not need much pre-knowledge or experience at all to work with this book.

What you will learn

  • Install and configure CentOS 7 Linux server system from scratch using normal and advanced methods
  • Maintain a performance-based and secure server solution by deploying expert configuration advice and managing software packages
  • Monitor, manage and develop your server s file system to maintain a stable performance
  • Gain best practice methods on sharing files and resources through a network
  • Install and configure common standard services such as web, mail, FTP, database and domain name server technologies
  • Introduce you to the world of operating-system-level virtualization using the Docker platform.
  • Understand the fundamentals of the Security-Enhanced Linux access control architecture
  • Monitor your IT infrastructure using Nagios
Estimated delivery fee Deliver to Slovakia

Premium delivery 7 - 10 business days

€25.95
(Includes tracking information)

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Jan 29, 2016
Length: 326 pages
Edition : 2nd
Language : English
ISBN-13 : 9781785887284
Tools :

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
OR
Modal Close icon
Payment Processing...
tick Completed

Shipping Address

Billing Address

Shipping Methods
Estimated delivery fee Deliver to Slovakia

Premium delivery 7 - 10 business days

€25.95
(Includes tracking information)

Product Details

Publication date : Jan 29, 2016
Length: 326 pages
Edition : 2nd
Language : English
ISBN-13 : 9781785887284
Tools :

Packt Subscriptions

See our plans and pricing
Modal Close icon
€18.99 billed monthly
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Simple pricing, no contract
€189.99 billed annually
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts
€264.99 billed in 18 months
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts

Frequently bought together


Stars icon
Total 113.97
CentOS High Performance
€29.99
Mastering CentOS 7 Linux Server
€41.99
CentOS 7 Linux Server Cookbook, Second Edition
€41.99
Total 113.97 Stars icon
Banner background image

Table of Contents

16 Chapters
1. Installing CentOS Chevron down icon Chevron up icon
2. Configuring the System Chevron down icon Chevron up icon
3. Managing the System Chevron down icon Chevron up icon
4. Managing Packages with YUM Chevron down icon Chevron up icon
5. Administering the Filesystem Chevron down icon Chevron up icon
6. Providing Security Chevron down icon Chevron up icon
7. Building a Network Chevron down icon Chevron up icon
8. Working with FTP Chevron down icon Chevron up icon
9. Working with Domains Chevron down icon Chevron up icon
10. Working with Databases Chevron down icon Chevron up icon
11. Providing Mail Services Chevron down icon Chevron up icon
12. Providing Web Services Chevron down icon Chevron up icon
13. Operating System-Level Virtualization Chevron down icon Chevron up icon
14. Working with SELinux Chevron down icon Chevron up icon
15. Monitoring IT Infrastructure Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Top Reviews
Rating distribution
Full star icon Full star icon Full star icon Full star icon Half star icon 4.1
(10 Ratings)
5 star 50%
4 star 30%
3 star 0%
2 star 20%
1 star 0%
Filter icon Filter
Top Reviews

Filter reviews by




Mike Feb 18, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Was very helpful, I had never used this version of Linux before.
Amazon Verified review Amazon
edgar p. Oct 29, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Great book.
Amazon Verified review Amazon
J. Osborne Feb 19, 2016
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This is the book I have been looking for. It walks you through step by step from installation to having a complete server up and running. Other books tend to show you the technical use of the commands but don't apply the use to specifically setting up a server. Well written and easy to understand. This book will get new CentOS users up and running with a basic linux server while providing useful information for those that already have a better understanding of Linux servers. Great book!
Amazon Verified review Amazon
Paul McDowell Dec 01, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
CentOS 7 is kind of a slap in the head to those of us used to the more conventional server platform OS setups. This book helps get you past a lot of that.
Amazon Verified review Amazon
Amazon Customer Jan 11, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Excellent! Taught me how to do many things that was second nature with CentOS 6 exactly how to do it in CentOS 7.
Amazon Verified review Amazon
Get free access to Packt library with over 7500+ books and video courses for 7 days!
Start Free Trial

FAQs

What is the delivery time and cost of print book? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela
What is custom duty/charge? Chevron down icon Chevron up icon

Customs duty are charges levied on goods when they cross international borders. It is a tax that is imposed on imported goods. These duties are charged by special authorities and bodies created by local governments and are meant to protect local industries, economies, and businesses.

Do I have to pay customs charges for the print book order? Chevron down icon Chevron up icon

The orders shipped to the countries that are listed under EU27 will not bear custom charges. They are paid by Packt as part of the order.

List of EU27 countries: www.gov.uk/eu-eea:

A custom duty or localized taxes may be applicable on the shipment and would be charged by the recipient country outside of the EU27 which should be paid by the customer and these duties are not included in the shipping charges been charged on the order.

How do I know my custom duty charges? Chevron down icon Chevron up icon

The amount of duty payable varies greatly depending on the imported goods, the country of origin and several other factors like the total invoice amount or dimensions like weight, and other such criteria applicable in your country.

For example:

  • If you live in Mexico, and the declared value of your ordered items is over $ 50, for you to receive a package, you will have to pay additional import tax of 19% which will be $ 9.50 to the courier service.
  • Whereas if you live in Turkey, and the declared value of your ordered items is over € 22, for you to receive a package, you will have to pay additional import tax of 18% which will be € 3.96 to the courier service.
How can I cancel my order? Chevron down icon Chevron up icon

Cancellation Policy for Published Printed Books:

You can cancel any order within 1 hour of placing the order. Simply contact [email protected] with your order details or payment transaction id. If your order has already started the shipment process, we will do our best to stop it. However, if it is already on the way to you then when you receive it, you can contact us at [email protected] using the returns and refund process.

Please understand that Packt Publishing cannot provide refunds or cancel any order except for the cases described in our Return Policy (i.e. Packt Publishing agrees to replace your printed book because it arrives damaged or material defect in book), Packt Publishing will not accept returns.

What is your returns and refunds policy? Chevron down icon Chevron up icon

Return Policy:

We want you to be happy with your purchase from Packtpub.com. We will not hassle you with returning print books to us. If the print book you receive from us is incorrect, damaged, doesn't work or is unacceptably late, please contact Customer Relations Team on [email protected] with the order number and issue details as explained below:

  1. If you ordered (eBook, Video or Print Book) incorrectly or accidentally, please contact Customer Relations Team on [email protected] within one hour of placing the order and we will replace/refund you the item cost.
  2. Sadly, if your eBook or Video file is faulty or a fault occurs during the eBook or Video being made available to you, i.e. during download then you should contact Customer Relations Team within 14 days of purchase on [email protected] who will be able to resolve this issue for you.
  3. You will have a choice of replacement or refund of the problem items.(damaged, defective or incorrect)
  4. Once Customer Care Team confirms that you will be refunded, you should receive the refund within 10 to 12 working days.
  5. If you are only requesting a refund of one book from a multiple order, then we will refund you the appropriate single item.
  6. Where the items were shipped under a free shipping offer, there will be no shipping costs to refund.

On the off chance your printed book arrives damaged, with book material defect, contact our Customer Relation Team on [email protected] within 14 days of receipt of the book with appropriate evidence of damage and we will work with you to secure a replacement copy, if necessary. Please note that each printed book you order from us is individually made by Packt's professional book-printing partner which is on a print-on-demand basis.

What tax is charged? Chevron down icon Chevron up icon

Currently, no tax is charged on the purchase of any print book (subject to change based on the laws and regulations). A localized VAT fee is charged only to our European and UK customers on eBooks, Video and subscriptions that they buy. GST is charged to Indian customers for eBooks and video purchases.

What payment methods can I use? Chevron down icon Chevron up icon

You can pay with the following card types:

  1. Visa Debit
  2. Visa Credit
  3. MasterCard
  4. PayPal
What is the delivery time and cost of print books? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela