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Learning Nagios 4.

Author: Wojciech Kocjan
Publisher: Packt Publishing, 2014.
Edition/Format:   eBook : Document : EnglishView all editions and formats
Summary:
In Detail One of the most important challenges in system monitoring is to detect and report any malfunctioning system or device as soon as possible, so that you as an administrator are aware of the problem before a user runs into one. Nagios is a powerful monitoring tool that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes. It monitors your  Read more...
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Genre/Form: Electronic books
Additional Physical Format: Print version:
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Wojciech Kocjan
ISBN: 1306531098 9781306531092 9781783288656 1783288655 1783288647 9781783288649
OCLC Number: 874966606
Language Note: English.
Description: 1 online resource
Contents: Cover; Copyright; Credits; About the Author; About the Reviewers; www.PacktPub.com; Table of Contents; Preface; Chapter 1: Introducing Nagios; Understanding the basics of Nagios; The benefits of monitoring resources; Main features; Soft and hard states; What's new in Nagios 4.0; Summary; Chapter 2: Installing Nagios 4; Installation; Upgrading from previous versions; Installing prerequisites; Obtaining Nagios; Setting up users and groups; Compiling and installing Nagios; Compiling and installing Nagios plugins; Setting up Nagios as a system service. Resolving error with script for Nagios system serviceConfiguring Nagios; Creating the main configuration file; Understanding macro definitions; Configuring hosts; Configuring host groups; Configuring services; Configuring service groups; Configuring commands; Configuring time periods; Configuring contacts; Configuring contact groups; Verifying the configuration; Understanding notifications; Templates and object inheritance; Summary; Chapter 3: Using the Nagios Web Interface; Setting up the web interface; Configuring the web server; Creating an administrative user for Nagios. Accessing the web interfaceTroubleshooting; Using the web interface; Checking the tactical overview; Viewing the status map; Managing hosts; Checking statuses; Viewing host information; Managing services; Checking statuses; Viewing service information; Managing downtimes; Checking downtimes statuses; Scheduling downtimes; Managing comments; Nagios information; Viewing process Information; Checking performance information; Generating reports; Changing the look of the Nagios web interface; Third-party Nagios web interfaces; Summary; Chapter 4: Using the Nagios Plugins. Understanding how checks workMonitoring using the standard network plugins; Testing the connection to a remote host; Testing the connectivity using TCP and UDP; Monitoring the e-mail servers; Checking the POP3 and IMAP servers; Testing the SMTP protocol; Monitoring network services; Checking the FTP server; Verifying the DHCP protocol; Monitoring the Nagios process; Testing the websites; Monitoring the database systems; Checking MySQL; Checking PostgreSQL; Checking Oracle; Checking other databases; Monitoring the storage space; Checking the swap space; Monitoring disk status using SMART. Checking the disk spaceTesting the free space for remote shares; Monitoring the resources; Checking the system load; Checking the processes; Monitoring the logged-in users; Monitoring other operations; Checking for updates with APT; Monitoring the UPS status; Gathering information from the lm-sensors; Using the dummy check plugin; Manipulating other plugins' output; Additional and third party plugins; Monitoring the network software; Using third-party plugins; Summary; Chapter 5: Advanced Configuration; Creating maintainable configurations; Configuration the file structure.

Abstract:

In Detail One of the most important challenges in system monitoring is to detect and report any malfunctioning system or device as soon as possible, so that you as an administrator are aware of the problem before a user runs into one. Nagios is a powerful monitoring tool that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes. It monitors your entire IT infrastructure to ensure systems, applications, services, and business processes are functioning properly. In the event of a failure, Nagios can alert the technical staff of the problem, allowing them to begin remediation processes before outages affect business processes, end-users, or customers. "Learning Nagios 4" is a practical, beginner-level book that introduces you to setting up Nagios and walks you through all the basics of configuring it. It will guide you through the process of getting Nagios 4 up and running, using the web interface and monitoring IT systems. This book will also help you with understanding the typical problems encountered in setting up large-scale Nagios environments, as well as guide you through creating your very own Nagios plug-ins. "Learning Nagios 4" will introduce Nagios to the system administrators who are interested in monitoring their systems as well as networks. This book starts by guiding you through setting up and configuring your first instance of Nagios so you can quickly start using it to ensure your IT is working properly. The book also covers using SNMP to monitor various network-enabled devices. You will also find out how to use NSClient++ to monitor Microsoft Windows systems. The book explains distributed monitoring using multiple Nagios instances. Also, if you want to create your own plug-ins for Nagios, this book will teach you how to do so using programming languages like C and scripting languages like PHP, Perl, shell and Python. By the end of this book, you will have all the necessary knowledge you need to set up Nagios 4 as well as for using Nagios in a large, distributed environment that monitors a large number of computers, services, and devices. Approach This book will introduce Nagios to readers who are interested in monitoring their systems. All the concepts in the book are explained in a simplified manner, presented in an easy-to-understand language with lots of tips, tricks, and illustrations. Who this book is for This book is great for system administrators interested in using Nagios to monitor their systems. It will also help professionals who have already worked with earlier versions of Nagios to understand the new features of Nagios 4 and provides usable solutions to real-life problems related to Nagios administration. To effectively use this book, system administration knowledge is required. If you want to create your own plug-ins, knowledge of scripting languages like Perl, shell and Python is expected.

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