book

Learning Nagios 4 - Second Edition

by Wojciech Kocjan

March 2014

Beginner

400 pages

9h 29m

English

Packt Publishing

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What this book covers

Downloading the example codeErrataPiracyQuestions
Understanding the basics of NagiosThe benefits of monitoring resourcesMain features
InstallationUpgrading from previous versionsInstalling prerequisitesObtaining NagiosSetting up users and groupsCompiling and installing NagiosCompiling and installing Nagios pluginsSetting up Nagios as a system serviceResolving errors with script for Nagios system service
Creating the main configuration fileUnderstanding macro definitionsConfiguring hostsConfiguring host groupsConfiguring servicesConfiguring service groupsConfiguring commandsConfiguring time periodsConfiguring contactsConfiguring contact groupsVerifying the configurationUnderstanding notificationsTemplates and object inheritance
Setting up the web interfaceConfiguring the web serverCreating an administrative user for NagiosAccessing the web interfaceTroubleshooting
Checking the tactical overviewViewing the status map
Checking statusesViewing host information
Checking statusesViewing service information
Checking downtime statusesScheduling downtime
Viewing process informationChecking performance information
Understanding how checks work
Testing the connection to a remote hostTesting the connectivity using TCP and UDP
Checking the POP3 and IMAP serversTesting the SMTP protocol
Checking the FTP serverVerifying the DHCP protocolMonitoring the Nagios processTesting the websites
Checking MySQLChecking PostgreSQLChecking OracleChecking other databases
Checking the swap spaceMonitoring the disk status using SMARTChecking the disk spaceTesting the free space for remote shares
Checking the system loadChecking the processesMonitoring the logged-in users
Checking for updates with APTMonitoring the UPS statusGathering information from the lm-sensorsUsing the dummy check pluginManipulating other plugins' output
Monitoring the network softwareUsing third-party plugins
Creating maintainable configurations
Creating the host dependenciesCreating the service dependencies
Creating the templatesInheriting from multiple templates
Creating effective notificationsUsing multiple notificationsSending instant messages via JabberNotifying users with text messagesIntegrating with HipChat
Setting up escalationsUnderstanding how escalations work
Adding comments to hosts and servicesScheduling host and service checksModifying custom variables
Restarting services automaticallyModifying notifications
Understanding passive checksConfiguring passive checksSending passive check results for hostsSending passive check results for servicesTroubleshooting errors
Downloading NSCACompiling NSCAConfiguring the NSCA serverSending results over NSCAConfiguring NSCA for secure communication
Monitoring over SSHConfiguring the SSH connectionUsing the check_by_ssh pluginPerforming multiple checksTroubleshooting the SSH-based checks
Obtaining NRPECompiling NRPEConfiguring the NRPE daemonSetting up NRPE as a system serviceConfiguring Nagios for NRPEUsing command arguments with NRPETroubleshooting NRPE
Introducing SNMPUnderstanding data objects
Using graphical tools
Receiving trapsUsing additional plugins
Monitoring Windows hostsSetting up NSClient++Performing tests using check_ntPerforming checks with NRPE protocolPerforming passive checks using NSCA Protocol
Introducing obsessive notificationsConfiguring Nagios instancesPerforming freshness checking
Creating the host and service objectsCustomizing checks with custom variables
Introducing Nagios customizations
Testing the correctness of the MySQL databaseMonitoring local time with a time serverWriting plugins correctly
Monitoring VMwareMonitoring Amazon Web Services
Using passive checks
Introducing the query handlerCommunicating with the query handlerUsing the query handler programmatically
Displaying real-time status updatesDisplaying checks using Gource

Overview

Learn Nagios 4 from the ground up with this comprehensive guide designed for system administrators. Covering all aspects of installation, configuration, and advanced monitoring, this book will teach you how to effectively utilize the latest version of Nagios to monitor and maintain your systems' stability and performance.

What this Book will help me do

Install and configure Nagios 4 for robust network and system monitoring.
Leverage advanced Nagios features to streamline operational analytics.
Master the Nagios web interface for effective monitoring management.
Create custom scripts and plugins to extend Nagios functionality.
Implement distributed monitoring setups for scalable system coverage.

Author(s)

Wojciech Kocjan is a seasoned system administrator and network engineer with years of experience in monitoring solutions. He brings his practical expertise to life in this guide, offering readers clear and concise instructions for mastering Nagios 4. His approachable style makes this complex topic accessible to readers of varying technical backgrounds.

Who is it for?

This book is tailored for system administrators and IT professionals seeking to implement powerful monitoring capabilities using Nagios. It's ideal for those with basic networking and Linux administration skills. Readers will benefit from having hands-on ambitions to create efficient and functional monitoring systems. Beginners to Nagios and those upgrading from previous versions will find this resource invaluable.