Search icon Close icon
Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Checkout

Change country

Modal Close icon
Country selected Country selected
country flag United States
Country selected
country flag Great Britain
Country selected
country flag India
Country selected
country flag Germany
Country selected
country flag France
Country selected
country flag Canada
Country selected
country flag Russia
Country selected
country flag Spain
Country selected
country flag Brazil
Country selected
country flag Australia
Country selected
country flag Singapore
Country selected
country flag Hungary
Country selected
country flag Ukraine
Country selected
country flag Luxembourg
Country selected
country flag Estonia
Country selected
country flag Lithuania
Country selected
country flag South Korea
Country selected
country flag Turkey
Country selected
country flag Switzerland
Country selected
country flag Colombia
Country selected
country flag Taiwan
Country selected
country flag Chile
Country selected
country flag Norway
Country selected
country flag Ecuador
Country selected
country flag Indonesia
Country selected
country flag New Zealand
Country selected
country flag Cyprus
Country selected
country flag Denmark
Country selected
country flag Finland
Country selected
country flag Poland
Country selected
country flag Malta
Country selected
country flag Czechia
Country selected
country flag Austria
Country selected
country flag Sweden
Country selected
country flag Italy
Country selected
country flag Egypt
Country selected
country flag Belgium
Country selected
country flag Portugal
Country selected
country flag Slovenia
Country selected
country flag Ireland
Country selected
country flag Romania
Country selected
country flag Greece
Country selected
country flag Argentina
Country selected
country flag Netherlands
Country selected
country flag Bulgaria
Country selected
country flag Latvia
Country selected
country flag South Africa
Country selected
country flag Malaysia
Country selected
country flag Japan
Country selected
country flag Slovakia
Country selected
country flag Philippines
Country selected
country flag Mexico
Country selected
country flag Thailand
Country selected
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Newsletter Hub
Free Learning
Arrow right icon
timer SALE ENDS IN
0 Days
:
00 Hours
:
00 Minutes
:
00 Seconds
Home > Cloud & Networking > Network Security > Nagios Core Administration Cookbook Second Edition
Nagios Core Administration Cookbook Second Edition
Nagios Core Administration Cookbook Second Edition

Nagios Core Administration Cookbook Second Edition: Over 90 hands-on recipes that will employ Nagios Core as the anchor of monitoring on your network , Second Edition

Arrow left icon
Profile Icon Tom Ryder
Arrow right icon
$54.99
Full star icon Full star icon Full star icon Full star icon Full star icon 5 (2 Ratings)
Paperback Feb 2016 386 pages 2nd Edition
eBook
$29.99 $43.99
Paperback
$54.99
Subscription
Free Trial
Renews at $19.99p/m
Arrow left icon
Profile Icon Tom Ryder
Arrow right icon
$54.99
Full star icon Full star icon Full star icon Full star icon Full star icon 5 (2 Ratings)
Paperback Feb 2016 386 pages 2nd Edition
eBook
$29.99 $43.99
Paperback
$54.99
Subscription
Free Trial
Renews at $19.99p/m
eBook
$29.99 $43.99
Paperback
$54.99
Subscription
Free Trial
Renews at $19.99p/m

What do you get with Print?

Product feature icon Instant access to your digital copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Redeem a companion digital copy on all Print orders
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

Contact Details

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

Nagios Core Administration Cookbook Second Edition

Chapter 2. Working with Commands and Plugins

In this chapter, we will cover the following recipes:

  • Finding a plugin
  • Installing a plugin
  • Removing a plugin
  • Creating a new command
  • Customizing an existing command
  • Using an alternative check command for a host
  • Writing a new plugin from scratch
  • Implementing threshold checks in a plugin
  • Using macros as environment variables in a plugin

Introduction

Nagios Core is perhaps best thought of less as a monitoring tool and more as a monitoring framework. Its modular design allows any kind of program that returns appropriate values based on some kind of check as a check_command for a host or service, for use to ensure that a host or service is still responsive and functioning correctly. This is where the concepts of commands and plugins come into play.

For Nagios Core, a plugin is any program that can be used to gather information about a host or service. To ensure that a host is responding to PING requests, we'd use a plugin such as check_ping, which when run against a hostname or address—whether by Nagios Core or not—returns a status code to whatever called it, based on whether a response was received to the PING request within a certain period of time. This status code and any accompanying message is what Nagios Core uses to establish what state a host or service is in.

Plugins are generally just like any...

Finding a plugin

In this recipe, we'll follow a procedure to find a plugin appropriate to a specific monitoring task. We'll start by checking whether an existing plugin is already available to do just what we need. If we can't find one, we'll check whether we can use another more generic plugin to solve the problem. If we still find that nothing suits, we'll visit Nagios Exchange and search for an appropriate plugin.

Getting ready

You should have a Nagios Core 4.0 or newer server running with a few hosts and services that are configured already, and you'll need to have a particular service on one of these hosts, which you're not yet sure you need to monitor.

We'll use a simple problem as an example; we have a server named troy.example.net that runs an rsync(1) process that listens on port 873. We're already monitoring the host's network connectivity via PING, but we'd like to have Nagios Core check whether the rsync(1) server is available...

Installing a plugin

In this recipe, we'll install a custom plugin that we retrieved from Nagios Exchange on a Nagios Core server so that we can use it in a Nagios Core command and hence check a service with it.

Getting ready

You should have a Nagios Core 4.0 or newer server running with a few hosts and services configured already, and you should have found an appropriate plugin that is to be installed to solve a particular monitoring need. Your Nagios Core server should have Internet connectivity to allow you to download the plugin directly from the website.

In this example, we'll use check_rsync, which is available on the Web at https://exchange.nagios.org/directory/Plugins/Network-Protocols/Rsync/check_rsync/details.

This particular plugin is quite simple, consisting of a single Perl script with only very basic dependencies. If you want to install this script as an example, the server will also need to have a Perl interpreter installed, for example, in /usr/bin/perl.

This example...

Removing a plugin

In this recipe, we'll remove a plugin that we no longer need as part of our Nagios Core installation. Perhaps it's not working correctly, the service it monitors is no longer available, or there are security or licensing concerns with its usage.

Getting ready

You should have a Nagios Core 4.0 or newer server running with a few hosts and services configured already, and you should have a plugin that you would like to remove from the server. In this instance, we'll remove the no longer needed check_rsync plugin from our Nagios Core server.

How to do it...

We can remove a plugin from our Nagios Core instance as follows:

  1. Remove any part of the configuration that uses the plugin, including hosts or services that use it for a check_command and command definitions that refer to the program. As an example, the following definition for a command would no longer work after we removed the check_rsync plugin:
    define command {
    command_name  check_rsync
    command_line...

Creating a new command

In this recipe, we'll create a new command for a plugin that was just installed into the /usr/local/nagios/libexec directory in the Nagios Core server. This will define the way in which Nagios Core should use the plugin and thereby allow it to be used as part of a service definition.

Getting ready

You should have a Nagios Core 4.0 or newer server running with a few hosts and services configured already, and you should have a plugin installed for which you'd like to define a new command so that you can use it as part of a service definition. In this instance, we'll define a command for an installed check_rsync plugin.

How to do it...

We can define a new command in our configuration as follows:

  1. Change to the directory containing the command configuration files for Nagios Core. The default file is commands.cfg, located in /usr/local/nagios/etc/objects:
    # cd /usr/local/nagios/etc/objects
  2. Edit the commands.cfg file:
    # vi commands.cfg
  3. At the bottom of the file,...

Customizing an existing command

In this recipe, we'll customize an existing command definition. There are a number of reasons why you might want to do this. A common one is if a check is overzealous, sending notifications for the WARNING or CRITICAL states which aren't actually terribly worrisome; or, on the other hand, if a check is too forgiving and doesn't flag hosts or services as it has problems in recognizing when it would actually be appropriate to do so.

Another reason is to account for peculiarities in your own network. For example, if you run HTTP daemons on a large number of hosts on the alternative port 8080 that you need to check, it would be convenient to have a check_http_altport command available. We can do this by copying and altering the definition for the vanilla check_http command.

Getting ready

You should have a Nagios Core 4.0 or newer server running with a few hosts and services configured already. You should also already be familiar with the relationship...

Introduction

Nagios Core is perhaps best thought of less as a monitoring tool and more as a monitoring framework. Its modular design allows any kind of program that returns appropriate values based on some kind of check as a check_command for a host or service, for use to ensure that a host or service is still responsive and functioning correctly. This is where the concepts of commands and plugins come into play.

For Nagios Core, a plugin is any program that can be used to gather information about a host or service. To ensure that a host is responding to PING requests, we'd use a plugin such as check_ping, which when run against a hostname or address—whether by Nagios Core or not—returns a status code to whatever called it, based on whether a response was received to the PING request within a certain period of time. This status code and any accompanying message is what Nagios Core uses to establish what state a host or service is in.

Plugins are generally just like any other program on a...

Finding a plugin

In this recipe, we'll follow a procedure to find a plugin appropriate to a specific monitoring task. We'll start by checking whether an existing plugin is already available to do just what we need. If we can't find one, we'll check whether we can use another more generic plugin to solve the problem. If we still find that nothing suits, we'll visit Nagios Exchange and search for an appropriate plugin.

Getting ready

You should have a Nagios Core 4.0 or newer server running with a few hosts and services that are configured already, and you'll need to have a particular service on one of these hosts, which you're not yet sure you need to monitor.

We'll use a simple problem as an example; we have a server named troy.example.net that runs an rsync(1) process that listens on port 873. We're already monitoring the host's network connectivity via PING, but we'd like to have Nagios Core check whether the rsync(1) server is available and listening at all times, in case it crashes while...

Installing a plugin

In this recipe, we'll install a custom plugin that we retrieved from Nagios Exchange on a Nagios Core server so that we can use it in a Nagios Core command and hence check a service with it.

Getting ready

You should have a Nagios Core 4.0 or newer server running with a few hosts and services configured already, and you should have found an appropriate plugin that is to be installed to solve a particular monitoring need. Your Nagios Core server should have Internet connectivity to allow you to download the plugin directly from the website.

In this example, we'll use check_rsync, which is available on the Web at https://exchange.nagios.org/directory/Plugins/Network-Protocols/Rsync/check_rsync/details.

This particular plugin is quite simple, consisting of a single Perl script with only very basic dependencies. If you want to install this script as an example, the server will also need to have a Perl interpreter installed, for example, in /usr/bin/perl.

This example will also...

Removing a plugin

In this recipe, we'll remove a plugin that we no longer need as part of our Nagios Core installation. Perhaps it's not working correctly, the service it monitors is no longer available, or there are security or licensing concerns with its usage.

Getting ready

You should have a Nagios Core 4.0 or newer server running with a few hosts and services configured already, and you should have a plugin that you would like to remove from the server. In this instance, we'll remove the no longer needed check_rsync plugin from our Nagios Core server.

How to do it...

We can remove a plugin from our Nagios Core instance as follows:

  1. Remove any part of the configuration that uses the plugin, including hosts or services that use it for a check_command and command definitions that refer to the program. As an example, the following definition for a command would no longer work after we removed the check_rsync plugin:

    define command {
    command_name  check_rsync
    command_line  $USER1$/check_rsync...
Left arrow icon

Page 1 of 11

Right arrow icon

Key benefits

  • Master the advanced configuration techniques of Nagios Core to model your network better by improving hosts, services, and contacts
  • Filter and improve the notifications that Nagios Core sends in response to failed checks, which can greatly assist you when diagnosing problems
  • Pull Nagios Core's data into a database to write clever custom reports of your own devise

Description

Nagios Core is an open source monitoring framework suitable for any network that ensures both internal and customer-facing services are running correctly and manages notification and reporting behavior to diagnose and fix outages promptly. It allows very fine configuration of exactly when, where, what, and how to check network services to meet both the uptime goals of your network and systems team and the needs of your users. This book shows system and network administrators how to use Nagios Core to its fullest as a monitoring framework for checks on any kind of network services, from the smallest home network to much larger production multi-site services. You will discover that Nagios Core is capable of doing much more than pinging a host or to see whether websites respond. The recipes in this book will demonstrate how to leverage Nagios Core's advanced configuration, scripting hooks, reports, data retrieval, and extensibility to integrate it with your existing systems, and to make it the rock-solid center of your network monitoring world.

Who is this book for?

If you are a network or system administrator and are looking for instructions and examples on working with Nagios Core, then this book is for you. Some basic shell command-line experience is required, and some knowledge of scripting would be helpful when we discuss how plugins work.

What you will learn

  • Manage the configuration of Nagios Core with advanced techniques to achieve fine detail in your checks
  • Find, install, and even write your own check plugins
  • Filter notifications to send them to the right people or programs at the right time
  • Work around difficult network accessibility issues and delegate checks to other machines
  • Tweak a Nagios Core server to achieve both high performance and redundancy in case of disaster
  • Process the results of checks performed by other machines to monitor backups and similar processes
  • Extend Nagios Core to allow advanced scripting, reporting, and network visualization behavior
Estimated delivery fee Deliver to United States

Economy delivery 10 - 13 business days

Free $6.95

Premium delivery 6 - 9 business days

$21.95
(Includes tracking information)

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Feb 29, 2016
Length: 386 pages
Edition : 2nd
Language : English
ISBN-13 : 9781785889332
Category :
Cloud & Networking
Concepts :
Network Security
Tools :
Nagios

What do you get with Print?

Product feature icon Instant access to your digital copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Redeem a companion digital copy on all Print orders
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

Contact Details

Modal Close icon
Payment Processing...
tick Completed

Shipping Address

Billing Address

Shipping Methods
Estimated delivery fee Deliver to United States

Economy delivery 10 - 13 business days

Free $6.95

Premium delivery 6 - 9 business days

$21.95
(Includes tracking information)

Product Details

Publication date : Feb 29, 2016
Length: 386 pages
Edition : 2nd
Language : English
ISBN-13 : 9781785889332
Category :
Cloud & Networking
Concepts :
Network Security
Tools :
Nagios

Packt Subscriptions

See our plans and pricing
Modal Close icon
$19.99 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
START FREE TRIAL
BUY NOW
$199.99 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
START FREE TRIAL
BUY NOW
$279.99 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
START FREE TRIAL
BUY NOW

Frequently bought together

Nagios Core Administration Cookbook Second Edition
Nagios Core Administration Cookbook Second Edition
Read more
Feb 2016 386 pages
Full star icon 5 (2)
eBook
eBook
  • eBook eBook $29.99
  • Paperback Paperback $54.99
$29.99 $43.99
$54.99
Learning Nagios
Learning Nagios
Read more
Aug 2016 414 pages
Full star icon 5 (3)
eBook
eBook
  • eBook eBook $29.99
  • Paperback Paperback $54.99
$29.99 $43.99
$54.99
Learning Nagios 4
Learning Nagios 4
Read more
Mar 2014 400 pages
Full star icon 4.2 (10)
eBook
eBook
  • eBook eBook $19.99
  • Paperback Paperback $48.99
$19.99 $28.99
$48.99
Stars icon
Total $ 158.97
Nagios Core Administration Cookbook Second Edition
$54.99
Learning Nagios
$54.99
Learning Nagios 4
$48.99
Total $ 158.97 Stars icon

Table of Contents

12 Chapters
1. Understanding Hosts, Services, and Contacts Chevron down icon Chevron up icon
1. Understanding Hosts, Services, and Contacts
Introduction
Creating a new network host
Creating a new HTTP service
Creating a new e-mail contact
Verifying configuration
Creating a new hostgroup
Creating a new servicegroup
Creating a new contactgroup
Creating a new time period
Running a service on all hosts on a group
2. Working with Commands and Plugins Chevron down icon Chevron up icon
2. Working with Commands and Plugins
Introduction
Finding a plugin
Installing a plugin
Removing a plugin
Creating a new command
Customizing an existing command
Using an alternative check command for hosts
Writing a new plugin from scratch
Implementing threshold checks in a plugin
Using macros as environment variables in a plugin
3. Working with Checks and States Chevron down icon Chevron up icon
3. Working with Checks and States
Introduction
Specifying how frequently to check a host or service
Changing thresholds for PING RTT and packet loss
Changing thresholds for disk usage
Scheduling downtime for a host or service
Managing brief outages with flapping
Adjusting flapping percentage thresholds for a service
4. Configuring Notifications Chevron down icon Chevron up icon
4. Configuring Notifications
Introduction
Configuring notification periods
Configuring notifications for groups
Choosing states for notification
Specifying the number of failed checks before notification
Automating contact rotation
Defining an escalation for repeated notifications
Defining a custom notification method
Filtering notifications based on a host or service value
5. Monitoring Methods Chevron down icon Chevron up icon
5. Monitoring Methods
Introduction
Monitoring PING for any host
Monitoring SSH for any host
Checking an alternative SSH port
Monitoring mail services
Monitoring web services
Checking that a website returns a given string
Monitoring database services
Monitoring the output of an SNMP query
Monitoring a RAID or other hardware device
Creating an SNMP OID for monitoring
6. Enabling Remote Execution Chevron down icon Chevron up icon
6. Enabling Remote Execution
Introduction
Monitoring local services on a remote machine with NRPE
Setting the listening address for NRPE
Setting allowed client hosts for NRPE
Creating new NRPE command definitions securely
Giving limited sudo(8) privileges to NRPE
Using check_by_ssh with key authentication instead of NRPE
Using check_mk instead of NRPE
7. Using the Web Interface Chevron down icon Chevron up icon
7. Using the Web Interface
Introduction
Using the Tactical Overview
Viewing and interpreting availability reports
Viewing and interpreting trends
Viewing and interpreting notification history
Adding comments on hosts or services in the web interface
Viewing configuration in the web interface
Scheduling checks from the web interface
Acknowledging a problem via the web interface
8. Managing Network Layout Chevron down icon Chevron up icon
8. Managing Network Layout
Introduction
Creating a network host hierarchy
Using the network map
Choosing icons for hosts
Establishing a host dependency
Establishing a service dependency
Monitoring individual nodes in a cluster
Using the network map as an overlay
9. Managing Configuration Chevron down icon Chevron up icon
9. Managing Configuration
Introduction
Grouping configuration files in directories
Keeping a configuration under version control
Configuring host roles using groups
Building groups using regular expressions
Using inheritance to simplify configuration
Defining macros in a resource file
Using another object's directives in a host or service check
Using custom directives
Dynamically building host definitions
10. Security and Performance Chevron down icon Chevron up icon
10. Security and Performance
Introduction
Using authentication for the Nagios Core web interface
Using authenticated contacts
Writing debugging information to the Nagios log file
Monitoring Nagios performance with nagiostats
Setting up a redundant monitoring host
11. Automating and Extending Nagios Core Chevron down icon Chevron up icon
11. Automating and Extending Nagios Core
Introduction
Allowing and submitting passive checks
Submitting passive checks from a remote host with NSCA
Submitting passive checks in response to SNMP traps
Setting up an event handler script
Tracking host and service states with Nagiosgraph
Reading status in a MySQL database with NDOUtils
Reading status from a Unix socket with MK Livestatus
Writing customized Nagios Core reports
Getting extra visualizations with NagVis
Writing custom Nagios Core management scripts
Index Chevron down icon Chevron up icon
Index

Recommendations for you

Left arrow icon
Solutions Architect's Handbook
Solutions Architect's Handbook
Read more
Mar 2024 578 pages
Full star icon 4.7 (59)
eBook
eBook
  • eBook eBook $32.99
  • Paperback Paperback $59.99
$32.99 $47.99
$59.99
Mastering Terraform
Mastering Terraform
Read more
Jul 2024 494 pages
Full star icon 5 (19)
eBook
eBook
  • eBook eBook $27.98
  • Paperback Paperback $49.99
$27.98 $39.99
$49.99
The Ultimate Linux Shell Scripting Guide
The Ultimate Linux Shell Scripting Guide
Read more
Oct 2024 696 pages
Full star icon 5 (3)
eBook
eBook
  • eBook eBook $24.99
  • Paperback Paperback $44.99
$24.99 $35.99
$44.99
Mastering PowerShell Scripting
Mastering PowerShell Scripting
Read more
May 2024 826 pages
Full star icon 5 (27)
eBook
eBook
  • eBook eBook $21.99
  • Paperback Paperback $39.99
$21.99 $31.99
$39.99
Kubernetes – An Enterprise Guide
Kubernetes – An Enterprise Guide
Read more
Aug 2024 682 pages
Full star icon 4.8 (13)
eBook
eBook
  • eBook eBook $29.99
  • Paperback Paperback $54.99
$29.99 $43.99
$54.99
The Self-Taught Cloud Computing Engineer
The Self-Taught Cloud Computing Engineer
Read more
Sep 2023 472 pages
Full star icon 5 (180)
eBook
eBook
  • eBook eBook $27.98
  • Paperback Paperback $44.98
$27.98 $39.99
$44.98 $49.99
CI/CD Design Patterns
CI/CD Design Patterns
Read more
Dec 2024 356 pages
eBook
eBook
  • eBook eBook $21.99
  • Paperback Paperback $39.99
$21.99 $31.99
$39.99
Platform Engineering for Architects
Platform Engineering for Architects
Read more
Oct 2024 374 pages
Full star icon 5 (2)
eBook
eBook
  • eBook eBook $27.98
  • Paperback Paperback $36.99
$27.98 $39.99
$36.99 $49.99
Microsoft Azure Fundamentals Certification and Beyond
Microsoft Azure Fundamentals Certification and Beyond
Read more
Jan 2024 284 pages
Full star icon 4.8 (29)
eBook
eBook
  • eBook eBook $24.99
  • Paperback Paperback $44.99
$24.99 $35.99
$44.99
The Ultimate Docker Container Book
The Ultimate Docker Container Book
Read more
Aug 2023 626 pages
Full star icon 4.5 (12)
eBook
eBook
  • eBook eBook $27.98
  • Paperback Paperback $49.99
$27.98 $39.99
$49.99
Right arrow icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Full star icon 5
(2 Ratings)
5 star 100%
4 star 0%
3 star 0%
2 star 0%
1 star 0%
Mwema Nov 05, 2016
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book greatly helped in installing, customizing and supporting a large number of our Nagios implentations.
Amazon Verified review Amazon
Miguel Rodriguez Mar 04, 2023
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Da las pautas para entender y configurar el sistema Nagios, todo en inglés.Lo que si, da por sentado que el lector sabe usar Linux, por lo que, si uno no esta acostumbrado a sus sentencias, puede que le cueste un poco al principio.El contendio de la misma es muy ordenado, por lo que es util como consulta rapida.En mi caso, debido a mi oficio, me ayuda a enteder mejor ésta herramienta.Y el envio llegó en tiempo y forma.
Amazon Verified review Amazon

People who bought this also bought

Left arrow icon
Mastering Ubuntu Server
Mastering Ubuntu Server
Read more
Sep 2022 584 pages
Full star icon 4.6 (42)
eBook
eBook
  • eBook eBook $29.99
  • Paperback Paperback $54.99
$29.99 $43.99
$54.99
The Ultimate Docker Container Book
The Ultimate Docker Container Book
Read more
Aug 2023 626 pages
Full star icon 4.5 (12)
eBook
eBook
  • eBook eBook $27.98
  • Paperback Paperback $49.99
$27.98 $39.99
$49.99
Mastering Kubernetes
Mastering Kubernetes
Read more
Jun 2023 746 pages
Full star icon 4.5 (47)
eBook
eBook
  • eBook eBook $29.99
  • Paperback Paperback $54.99
$29.99 $43.99
$54.99
Ansible for Real-Life Automation
Ansible for Real-Life Automation
Read more
Sep 2022 480 pages
Full star icon 3.9 (7)
eBook
eBook
  • eBook eBook $22.99
  • Paperback Paperback $41.99
$22.99 $33.99
$41.99
AWS for Solutions Architects
AWS for Solutions Architects
Read more
Apr 2023 692 pages
Full star icon 4.3 (64)
eBook
eBook
  • eBook eBook $29.99
  • Paperback Paperback $54.99
$29.99 $43.99
$54.99
Right arrow icon

About the author

Profile icon Tom Ryder
Tom Ryder
Tom Ryder is a systems administrator living in New Zealand who works for an internet services provider. He loves terminals, text editors, network monitoring and security, Unix and GNU/Linux, shell script, and programming in general. He is also the author of the Nagios Core Administration Cookbook.
Read more
See other products by Tom Ryder
Get free access to Packt library with over 7500+ books and video courses for 7 days!
Start Free Trial

FAQs

What is the digital copy I get with my Print order? Chevron down icon Chevron up icon

When you buy any Print edition of our Books, you can redeem (for free) the eBook edition of the Print Book you’ve purchased. This gives you instant access to your book when you make an order via PDF, EPUB or our online Reader experience.

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 customercare@packt.com 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 customercare@packt.com 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 customercare@packt.com 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 customercare@packt.com 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 customercare@packt.com 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 customercare@packt.com 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