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Learning Nagios 4

You're reading from   Learning Nagios 4 For system administrators who want a fast, easily understood introduction to Nagios 4, this is the perfect book. Get to grips with the latest version of this powerful monitoring tool and transform the stability of your whole system.

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Product type Paperback
Published in Mar 2014
Publisher
ISBN-13 9781783288649
Length 400 pages
Edition Edition
Tools
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Author (1):
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Wojciech Kocjan Wojciech Kocjan
Author Profile Icon Wojciech Kocjan
Wojciech Kocjan
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Toc

Table of Contents (19) Chapters Close

Learning Nagios 4
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Introducing Nagios FREE CHAPTER 2. Installing Nagios 4 3. Using the Nagios Web Interface 4. Using the Nagios Plugins 5. Advanced Configuration 6. Notifications and Events 7. Passive Checks and NSCA 8. Monitoring Remote Hosts 9. Monitoring using SNMP 10. Advanced Monitoring 11. Programming Nagios 12. Using the Query Handler Index

Index

A

  • active checks
    • about / Understanding passive checks
    • benefits / Understanding passive checks
    / Creating custom active checks
  • ActiveState
    • URL / Introducing Nagios customizations
  • ActiveTcl
    • URL / Performing checks with NRPE protocol
    / Introducing Nagios customizations
  • adaptive monitoring
    • about / Using adaptive monitoring
    • using / Using adaptive monitoring
  • ADD_HOST_COMMENT command / Adding comments to hosts and services
  • ADD_SVC_COMMENT command / Adding comments to hosts and services
  • administrative user
    • creating, for web interface / Creating an administrative user for Nagios
  • advanced configuration, Nagios
    • maintainable configurations, creating / Creating maintainable configurations
    • file structure, configuring / Configuring the file structure
    • dependencies, defining / Defining the dependencies
    • host dependencies, creating / Creating the host dependencies
    • service dependencies, creating / Creating the service dependencies
    • templates, using / Using the templates
    • templates, creating / Creating the templates
    • multiple templates, inheriting from / Inheriting from multiple templates
    • custom variables, using / Using the custom variables
    • flapping / Understanding flapping
  • Advanced Packaging Tool (APT)
    • about / Checking for updates with APT
    • used, for checking updates / Checking for updates with APT
  • AIX (Advanced Interactive eXecutive) machines / Creating maintainable configurations
  • alert histogram report
    • about / Generating reports
  • Ansible
    • URL / Configuring Nagios instances
  • autoie package / Checking websites
  • availability report
    • about / Generating reports
  • AWS
    • monitoring / Monitoring Amazon Web Services

C

  • @core squeuestats command / Using the core service
  • C/C++ / Introducing Nagios customizations
  • CentOS / Obtaining NRPE
  • Central Perl Archive Network (CPAN)
    • URL / Sending instant messages via Jabber
  • ceptcl package
    • URL / Using the query handler programmatically
  • cfengine
    • URL / Configuring Nagios instances
  • CGI (Common Gateway Interface) / Setting up the web interface
  • CHANGE_CUSTOM_CONTACT_ command / Modifying custom variables
  • CHANGE_CUSTOM_HOST_VAR command / Modifying custom variables
  • CHANGE_CUSTOM_SVC_VAR command / Modifying custom variables
  • check_by_ssh plugin / Monitoring over SSH
    • using / Using the check_by_ssh plugin
  • check_dummy command / Creating the host and service objects
  • check_http plugin / Checking websites
  • check_ifoperstatus plugin / Using SNMP from Nagios
  • check_ifstatus plugin / Using SNMP from Nagios
  • check_interval / Creating event handlers
  • check_linux_services_by_ssh / Performing multiple checks
  • check_mrtg plugin / Using additional plugins
  • check_nt command
    • used, for performing tests / Performing tests using check_nt
    • syntax and options / Performing tests using check_nt
  • check_snmp command / Using SNMP from Nagios
  • check_swap_by_ssh command / Using the check_by_ssh plugin
  • check_swap_nrpe command / Configuring Nagios for NRPE
  • Chef
    • URL / Configuring Nagios instances
  • CLIENTVERSION variable
    • using / Performing tests using check_nt
  • clouds
    • about / Virtualization and clouds
    • public / Virtualization and clouds
    • private / Virtualization and clouds
  • CloudWatch / Monitoring Amazon Web Services
  • commands
    • sending, to Nagios / Sending commands to Nagios
    • comments, adding to hosts and services / Adding comments to hosts and services
    • host and service checks, scheduling / Scheduling host and service checks
    • custom variables, modifying / Modifying custom variables
    • writing, for sending notifications / Writing commands to send notifications
  • comments
    • managing / Managing comments
  • Component Object Model (COM) / Checking websites
  • Concurrent Versions System (CVS)
    • URL / Configuring Nagios instances
  • configure command / Compiling and installing Nagios
  • connectivity
    • testing, TCP and UDP used / Testing the connectivity using TCP and UDP
  • connectToNagios command / Displaying real-time status updates
  • core service
    • using / Using the core service
  • CPULOAD variable
    • using / Performing tests using check_nt
  • cron / Introducing Nagios customizations
  • custom active checks
    • creating / Creating custom active checks
    • MySQL database correctness, testing / Testing the correctness of the MySQL database
    • local time, monitoring with time server / Monitoring local time with a time server
    • plugins, writing / Writing plugins correctly
  • customizations
    • Nagios / Introducing Nagios customizations
  • custom variables
    • using / Using the custom variables
    • used, for performing checks / Customizing checks with custom variables

D

  • database systems
    • monitoring / Monitoring the database systems
    • MySQL, checking / Checking MySQL
    • PostgreSQL, checking / Checking PostgreSQL
    • Oracle, checking / Checking Oracle
    • databases, checking / Checking other databases
  • data objects, SNMP
    • about / Understanding data objects
  • data types, SNMP
    • string / Understanding data objects
    • Integer and Integer32 / Understanding data objects
    • Counters32 and Counter64 / Understanding data objects
    • gauges / Understanding data objects
    • time tick / Understanding data objects
    • IP address / Understanding data objects
  • decryption_method / Configuring the NSCA server
  • DEL_ALL_HOST_COMMENTS command / Adding comments to hosts and services
  • DEL_ALL_SVC_COMMENTS command / Adding comments to hosts and services
  • DEL_HOST_COMMENT command / Adding comments to hosts and services
  • DEL_SVC_COMMENT command / Adding comments to hosts and services
  • DHCP protocol
    • verifying / Verifying the DHCP protocol
  • disk space, storage space
    • checking / Checking the disk space
  • disk status, storage space
    • monitoring, SMART used / Monitoring the disk status using SMART
  • distributed monitoring
    • about / Understanding distributed monitoring
    • obsessive notifications / Introducing obsessive notifications
    • obsessive notifications, setting up / Introducing obsessive notifications
    • Nagios instances, configuring / Configuring Nagios instances
    • freshness checking, performing / Performing freshness checking
    • templates, using / Using templates for distributed monitoring
  • downtimes
    • managing / Managing downtime
    • statuses, checking / Checking downtime statuses
    • scheduling / Scheduling downtime

E

  • e-mail servers
    • monitoring / Monitoring the e-mail servers
    • POP3 server, checking / Checking the POP3 and IMAP servers
    • IMAP server, checking / Checking the POP3 and IMAP servers
    • SMTP protocol, testing / Testing the SMTP protocol
  • EC2
    • about / Monitoring Amazon Web Services
  • escalations
    • about / Understanding escalations
    • setting up / Setting up escalations
    • types / Setting up escalations
    • host escalation / Setting up escalations
    • service escalations / Setting up escalations
    • working / Understanding how escalations work
  • event handlers
    • about / Creating event handlers
    • services, restarting automatically / Restarting services automatically
    • notifications, modifying / Modifying notifications
  • external commands pipe
    • about / Sending commands to Nagios
    • limitation / Sending commands to Nagios
  • Extra Packages for Enterprise Linux (EPEL)
    • URL / Communicating with the query handler

F

  • fileevent command / Displaying real-time status updates
  • flapping
    • about / Understanding flapping
    • threshold, calculating / Understanding flapping
    • threshold values / Understanding flapping
  • free space, storage space
    • testing / Testing the free space for remote shares
  • FTP server
    • checking / Checking the FTP server

G

  • Gammu
    • URL / Notifying users with text messages
  • getInsertIndex command / Displaying real-time status updates
  • get_resource() function / Monitoring VMware
  • Git
    • URL / Configuring the file structure, Configuring Nagios instances
  • Gnokii
    • URL / Notifying users with text messages
  • Gource visualization tool / Introducing Nagios Event Radio Dispatcher
    • used, for displaying checks / Displaying checks using Gource
  • GPL Version 3 license
    • URL / Obtaining Nagios
  • graphical tools
    • using, in Net-SNMP package / Using graphical tools

H

  • Hg
    • URL / Configuring the file structure
  • HipChat
    • integrating with / Integrating with HipChat
    • about / Integrating with HipChat
    • URL / Integrating with HipChat
  • host and service objects
    • creating / Creating the host and service objects
  • hostchecks channel / Introducing Nagios Event Radio Dispatcher
  • host dependencies
    • creating / Creating the host dependencies
  • host escalation
    • defining / Setting up escalations
  • hosts
    • managing / Managing hosts
    • statuses, checking / Checking statuses
    • host information, viewing / Viewing host information
  • HtmlUnit / Checking websites
  • http / Checking websites
  • HttpUnit / Checking websites
  • Hypertext Transfer Protocol (HTTP) / The benefits of monitoring resources

I

  • IMAP server
    • checking / Checking the POP3 and IMAP servers
    • about / Checking the POP3 and IMAP servers
  • inetd
    • wikipedia link / Configuring the NSCA server
  • inform packet / Introducing SNMP

J

  • Jabber
    • using, for instant messaging / Sending instant messages via Jabber
    • about / Sending instant messages via Jabber
    • URL / Sending instant messages via Jabber
  • Java
    • URL / Introducing Nagios customizations
  • Java Native Interface (JNI) / Using the query handler programmatically
  • jnr-unixsocket
    • URL / Using the query handler programmatically
  • Joomla! / Checking websites

L

  • libmcrypt package / Compiling NSCA
  • libnagios
    • about / What's new in Nagios 4.0, Programming in C with libnagios
    • used, for programming in C / Programming in C with libnagios
  • lm-sensors
    • info, gathering from / Gathering information from the lm-sensors
  • loadctl command / Using the core service
  • logged-in users, resources
    • checking / Monitoring the logged-in users
  • LWP / Checking websites

M

  • maintainable configurations
    • creating / Creating maintainable configurations
  • Management Information Base (MIB) / Introducing SNMP
  • Manubulon website / Using additional plugins
  • master / Understanding distributed monitoring
  • max_check_attempts / Creating event handlers
  • mbrowse
    • about / Using graphical tools
    • URL / Using graphical tools
  • MCrypt library
    • URL / Using NSCA
  • mechanize / Checking websites
  • MEMUSE variable
    • using / Performing tests using check_nt
  • monitoring, NRPE used
    • performing / Monitoring using NRPE
  • monitoring, over SSH
    • performing / Monitoring over SSH
    • SSH connection, configuring / Configuring the SSH connection
    • check_by_ssh plugin, using / Using the check_by_ssh plugin
    • multiple checks, performing / Performing multiple checks
    • SSH-based checks, troubleshooting / Troubleshooting the SSH-based checks
  • monitoring resources
    • benefits / The benefits of monitoring resources
    • about / The benefits of monitoring resources
  • Multi Router Traffic Grapher (MRTG) package
    • URL / Using additional plugins
  • MySQL
    • checking / Checking MySQL

N

  • Nagios
    • about / Understanding the basics of Nagios
    • features / Understanding the basics of Nagios, Main features
    • system monitoring / Understanding the basics of Nagios
    • benefit / Understanding the basics of Nagios
    • monitoring resources, benefits / The benefits of monitoring resources
    • object types / Main features
    • soft and hard states, using / Soft and hard states
    • improvements / What's new in Nagios 4.0
    • installing / Installation
    • web interface, setting up / Setting up the web interface
    • checks, performing / Understanding how checks work
    • event handlers / Creating event handlers
    • adaptive monitoring / Using adaptive monitoring
    • monitoring, over SSH / Monitoring over SSH
    • monitoring, NRPE used / Monitoring using NRPE
    • configuring, for NRPE / Configuring Nagios for NRPE
    • customizations / Introducing Nagios customizations
    • managing / Managing Nagios
  • Nagios 4.0
    • features / What's new in Nagios 4.0
  • nagioscmd / Sending commands to Nagios
  • nagioscmd group / Setting up users and groups
  • Nagios configuration
    • about / Configuring Nagios
    • nagios.cfg, creating / Creating the main configuration file
    • macro definitions, using / Understanding macro definitions
    • hosts, configuring / Configuring hosts
    • host groups, configuring / Configuring host groups
    • services, configuring / Configuring services
    • service groups, configuring / Configuring service groups
    • commands, configuring / Configuring commands
    • time periods, configuring / Configuring time periods
    • contacts, configuring / Configuring contacts
    • contact groups, configuring / Configuring contact groups
    • verifying / Verifying the configuration
    • notifications, configuring / Understanding notifications
    • templates, defining / Templates and object inheritance
    • object inheritance / Templates and object inheritance
  • Nagios Dash / Third-party Nagios web interfaces
  • Nagios Dashboard
    • about / Third-party Nagios web interfaces
    • URL / Third-party Nagios web interfaces
  • Nagios Event Radio Dispatcher (NERD)
    • about / What's new in Nagios 4.0
  • Nagios Exchange
    • URL / Checking other databases, Monitoring Amazon Web Services
  • NagiosExchange website
    • URL / Obtaining Nagios
  • Nagios information
    • about / Nagios information
    • process Information, viewing / Viewing process information
    • performance information, checking / Checking performance information
  • Nagios installation
    • performing / Installation
    • upgrading / Upgrading from previous versions
    • prerequisites, installing / Installing prerequisites
    • Nagios, obtaining / Obtaining Nagios
    • users and groups, setting up / Setting up users and groups
    • Nagios, compiling / Compiling and installing Nagios
    • Nagios plugins, compiling / Compiling and installing Nagios plugins
    • Nagios plugins, installing / Compiling and installing Nagios plugins
    • Nagios, setting as system service / Setting up Nagios as a system service
    • error, solving, with script / Resolving errors with script for Nagios system service
  • Nagios instances, distributed monitoring
    • configuring / Configuring Nagios instances
  • Nagios plugins / Obtaining Nagios
  • Nagios process
    • monitoring / Monitoring the Nagios process
  • Nagios Service Check Acceptor (NSCA) protocol / Monitoring Windows hosts
  • Nagios Status Check Acceptor (NSCA) protocol / Introducing Nagios customizations
  • NagiosTV
    • about / Third-party Nagios web interfaces
  • Nagios V-Shell
    • about / Third-party Nagios web interfaces
  • nagios_analyzed / Introducing Nagios customizations
  • Naupy / Introducing Nagios customizations
  • NERD
    • about / Introducing Nagios Event Radio Dispatcher
    • real-time status updates, displaying / Displaying real-time status updates
    • checks, displaying with Gource / Displaying checks using Gource
  • Net-SNMP commands
    • parameters / Working with SNMP and MIB
  • Net-SNMP package
    • URL / Working with SNMP and MIB
    • about / Working with SNMP and MIB
    • installing / Working with SNMP and MIB
    • graphical tools, using / Using graphical tools
  • Netcat
    • URL / Communicating with the query handler
  • netfilter
    • URL / Configuring NSCA for secure communication
  • network services
    • monitoring / Monitoring network services
    • FTP server, checking / Checking the FTP server
    • DHCP protocol, verifying / Verifying the DHCP protocol
    • Nagios process, monitoring / Monitoring the Nagios process
    • websites, testing / Testing the websites
  • network software
    • monitoring / Monitoring the network software
  • notifications
    • setting up / Creating effective notifications
    • multiple notifications, using / Using multiple notifications
    • instant messaging, via Jabber / Sending instant messages via Jabber
    • users, notifying with text messages / Notifying users with text messages
  • NRPE
    • about / Monitoring using NRPE
    • daemon / Monitoring using NRPE
    • check command / Monitoring using NRPE
    • downloading / Obtaining NRPE
    • compiling / Compiling NRPE
    • daemon, configuring / Configuring the NRPE daemon
    • setting up, as system service / Setting up NRPE as a system service
    • Nagios, configuring for NRPE / Configuring Nagios for NRPE
    • command arguments, using with / Using command arguments with NRPE
    • troubleshooting / Troubleshooting NRPE
    • comparing, with SSH / Comparing NRPE and SSH
  • NRPE protocol
    • used, for performing checks / Performing checks with NRPE protocol
  • NSCA
    • using / Using NSCA
    • about / Using NSCA
    • downloading / Downloading NSCA
    • compiling / Compiling NSCA
    • configuring / Configuring the NSCA server
    • results, sending over / Sending results over NSCA
    • configuring, for secure communication / Configuring NSCA for secure communication
  • NSCA Protocol
    • used, for performing passive checks / Performing passive checks using NSCA Protocol
  • NSClient++
    • URL / Monitoring Windows hosts
    • about / Setting up NSClient++
    • setting up / Setting up NSClient++
    • configuring / Setting up NSClient++

O

  • Object Identifiers (OIDs)
    • URL / Understanding data objects
    • about / Understanding data objects
  • object types
    • commands / Main features
    • time periods / Main features
    • hosts and host groups / Main features
    • services / Main features
    • contacts and contact groups / Main features
    • notifications / Main features
    • escalations / Main features
  • obsessive notifications
    • about / Introducing obsessive notifications
    • setting up / Introducing obsessive notifications
  • opathchecks channel / Introducing Nagios Event Radio Dispatcher
  • openssl command / Compiling NRPE
  • operations
    • monitoring / Monitoring other operations
    • updates, checking with APT / Checking for updates with APT
    • UPS status, monitoring / Monitoring the UPS status
    • info, gathering from lm-sensors / Gathering information from the lm-sensors
    • dummy check plugin, using / Using the dummy check plugin
    • plugin output, manipulating / Manipulating other plugins' output
  • Oracle
    • about / Checking Oracle
    • checking / Checking Oracle
  • Oracle System Identifier (SID) / Checking Oracle
  • ord function / Using the core service

P

  • Packet Loss (PKTLOSS) / Testing the connection to a remote host
  • PAMIE package / Checking websites
  • passive checks
    • about / Understanding passive checks
    • example / Understanding passive checks
    • benefits / Understanding passive checks
    • performing / Understanding passive checks
    • configuring / Configuring passive checks
    • results, sending for hosts / Sending passive check results for hosts
    • results, sending for services / Sending passive check results for services
    • troubleshooting errors / Troubleshooting errors
    • using / Using passive checks
  • Perl
    • URL / Introducing Nagios customizations
  • PHP / Setting up the web interface
    • URL / Introducing Nagios customizations
  • Pidgin
    • about / Sending instant messages via Jabber
    • URL / Sending instant messages via Jabber
  • Point-to-Point Protocol (PPP) / Understanding data objects
  • POP3 server
    • about / Checking the POP3 and IMAP servers
    • checking / Checking the POP3 and IMAP servers
  • PostgreSQL
    • about / Checking PostgreSQL
    • checking / Checking PostgreSQL
  • private clouds / Virtualization and clouds
  • processes, resources
    • checking / Checking the processes
  • PROCSTATE variable
    • using / Performing tests using check_nt
  • public clouds / Virtualization and clouds
  • Puppet
    • URL / Configuring Nagios instances
  • Pynag / Introducing Nagios customizations
  • Python
    • URL / Introducing Nagios customizations

Q

  • query handler
    • about / Introducing the query handler
    • communicating with / Communicating with the query handler
    • using / Using the query handler programmatically
    • core service / Using the core service
    • NERD / Introducing Nagios Event Radio Dispatcher

R

  • real-time status updates, NERD
    • displaying / Displaying real-time status updates
  • Red Hat Enterprise Linux (RHEL) / Obtaining NRPE
  • remote host connection
    • testing, standard network plugins used / Testing the connection to a remote host
  • reports
    • generating / Generating reports
    • types / Generating reports
  • requests / Checking websites
  • resources
    • monitoring / Monitoring the resources
    • system load, checking / Checking the system load
    • processes, checking / Checking the processes
    • logged-in users, checking / Monitoring the logged-in users
  • Round Trip Average (RTA) / Testing the connection to a remote host
  • Ruby
    • URL / Introducing Nagios customizations
    • about / Introducing Nagios customizations
  • RubyGems package / Monitoring Amazon Web Services

S

  • SCHEDULE_FORCED_HOST_ command / Scheduling host and service checks
  • SCHEDULE_FORCED_HOST_SVC_CHECKS command / Scheduling host and service checks
  • SCHEDULE_FORCED_SVC_CHECK command / Scheduling host and service checks
  • SCHEDULE_HOST_ command / Scheduling host and service checks
  • SCHEDULE_HOST_SVC_CHECKS command / Scheduling host and service checks
  • Secure Shell (SSH) server / Understanding the basics of Nagios
  • send_nsca command / Configuring Nagios instances
  • servicechecks channel / Introducing Nagios Event Radio Dispatcher
  • service dependencies
    • creating / Creating the service dependencies
  • service escalation
    • defining / Setting up escalations
  • services
    • managing / Managing services
    • statuses, checking / Checking statuses
    • service information, viewing / Viewing service information
  • Simple Mail Transfer Protocol (SMTP)
    • about / Testing the SMTP protocol
    • testing / Testing the SMTP protocol
  • slave / Understanding distributed monitoring
  • SMART
    • about / Monitoring the disk status using SMART
    • used, for monitoring disk space / Monitoring the disk status using SMART
  • SNMP
    • about / Introducing SNMP
    • data objects / Understanding data objects
    • data types / Understanding data objects
  • SNMP-Nagios integration
    • about / Using SNMP from Nagios
    • performing / Using SNMP from Nagios
    • traps, receiving / Receiving traps
    • additional plugins / Using additional plugins
    • Check Plugins / Using additional plugins
    • Software plugin / Using additional plugins
    • SNMP category plugin / Using additional plugins
  • SNMP agent
    • setting up / Setting up an SNMP agent
    • verifying / Setting up an SNMP agent
  • SNMP trap / Introducing SNMP
  • SNMPv1 / Introducing SNMP
  • SNMPv2c / Introducing SNMP
  • SNMPv3 / Introducing SNMP
  • SNMP versions
    • version 1 / Introducing SNMP
    • version 2 / Introducing SNMP
    • version 3 / Introducing SNMP
  • snmpwalk command / Working with SNMP and MIB
  • socat
    • URL / Communicating with the query handler
  • soft and hard states
    • using / Soft and hard states
  • SourceForge project / Obtaining Nagios
  • SSH
    • comparing, with NRPE / Comparing NRPE and SSH
  • SSH-based checks
    • troubleshooting / Troubleshooting the SSH-based checks
  • ssh-keygen command / Configuring the SSH connection
  • SSH connection
    • configuring / Configuring the SSH connection
  • STAF
    • about / Alternatives to SSH and NRPE
  • standard network plugins
    • about / Monitoring using the standard network plugins
    • used, for monitoring / Monitoring using the standard network plugins
    • used, for monitoring remote host connection / Testing the connection to a remote host
    • used, for testing connectivity / Testing the connectivity using TCP and UDP
  • status map, web interface
    • viewing / Viewing the status map
  • storage space
    • monitoring / Monitoring the storage space
    • swap space, checking / Checking the swap space
    • disk status, monitoring with SMART / Monitoring the disk status using SMART
    • disk space, checking / Checking the disk space
    • free space, testing for remote shares / Testing the free space for remote shares
  • Structured Query Language (SQL)
    • wiki URL / Performing tests using check_nt
  • Subprocess API / Using passive checks
  • Subversion
    • URL / Configuring Nagios instances
  • SVN
    • URL / Configuring the file structure
  • swap space, storage space
    • monitoring / Checking the swap space
  • system load, resources
    • checking / Checking the system load
  • system monitoring
    • about / Understanding the basics of Nagios
    • hosts / Understanding the basics of Nagios
    • services / Understanding the basics of Nagios

T

  • tactical overview, web interface
    • checking / Checking the tactical overview
  • Tcl
    • URL / Introducing Nagios customizations
    • about / Introducing Nagios customizations
  • Tcl/tK based Interactive Network EDitor (TkIned) / Using graphical tools
  • templates
    • creating / Creating the templates
  • templates, for distributed monitoring
    • using / Using templates for distributed monitoring
    • about / Using templates for distributed monitoring
    • local / Using templates for distributed monitoring
    • remote / Using templates for distributed monitoring
    • host and service objects, creating / Creating the host and service objects
    • checks, customizing with custom variables / Customizing checks with custom variables
  • third-party Nagios web interfaces
    • about / Third-party Nagios web interfaces
    • Nagios Dashboard / Third-party Nagios web interfaces
    • NagiosTV / Third-party Nagios web interfaces
    • Nagios V-Shell / Third-party Nagios web interfaces
  • third-party plugins
    • using / Using third-party plugins
  • TIMESTAMP / Sending commands to Nagios
  • treeview widget / Displaying real-time status updates
  • trend report
    • about / Generating reports
  • troubleshooting
    • web interface / Troubleshooting
  • troubleshooting errors, passive checks / Troubleshooting errors
  • Twilio
    • URL / Notifying users with text messages
  • Twofish / Configuring NSCA for secure communication

U

  • Unix domain sockets / Introducing the query handler
  • UPS status
    • monitoring / Monitoring the UPS status
  • USEDDISKSPACE variable
    • using / Performing tests using check_nt
  • User Datagram Protocol (UDP)
    • URL / Introducing SNMP
    • communication types / Introducing SNMP

V

  • VmPerl API / Monitoring VMware
  • VMware
    • monitoring / Monitoring VMware
    / Monitoring VMware
  • VMware Server
    • URL / Monitoring VMware

W

  • Watir / Checking websites
  • webautotest / Checking websites
  • webautotest package / Checking websites
  • web interface
    • setting up / Setting up the web interface
    • web server, configuring / Configuring the web server
    • administrative user, creating / Creating an administrative user for Nagios
    • accessing / Accessing the web interface
    • troubleshooting / Troubleshooting
    • using / Using the web interface
    • tactical overview, checking / Checking the tactical overview
    • status map, viewing / Viewing the status map
    • theme, changing / Changing the look of the Nagios web interface
  • websites
    • testing / Testing the websites
    • checking / Checking websites
  • Windows hosts, monitoring
    • performing / Monitoring Windows hosts
    • NSClient++, setting up / Setting up NSClient++
    • NSClient++, configuring / Setting up NSClient++
    • test performing, check_nt used / Performing tests using check_nt
    • checks, performing with NRPE protocol / Performing checks with NRPE protocol
    • passive checks, performing with NSCA protocol / Performing passive checks using NSCA Protocol
  • Windows Management Instrumentation (WMI)
    • wiki URL / Performing tests using check_nt
    • about / Performing tests using check_nt

X

  • xinetd setup
    • URL / Configuring the NSCA server
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