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Learning Nagios 4

By : Wojciech Kocjan
Book Image

Learning Nagios 4

By: Wojciech Kocjan

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Learning Nagios 4
Wojciech Kocjan
Mar, 2014 | 400 pages
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Table of Contents (19 chapters)
Learning Nagios 4
Learning Nagios 4
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Introducing Nagios
Introducing Nagios
Understanding the basics of Nagios
Soft and hard states
What's new in Nagios 4.0
Summary
2
Installing Nagios 4
Installing Nagios 4
Installation
Configuring Nagios
Summary
3
Using the Nagios Web Interface
Using the Nagios Web Interface
Setting up the web interface
Using the web interface
Managing hosts
Managing services
Managing downtime
Managing comments
Nagios information
Generating reports
Changing the look of the Nagios web interface
Third-party Nagios web interfaces
Summary
4
Using the Nagios Plugins
Using the Nagios Plugins
Understanding how checks work
Monitoring using the standard network plugins
Monitoring the e-mail servers
Monitoring network services
Monitoring the database systems
Monitoring the storage space
Monitoring the resources
Monitoring other operations
Additional and third-party plugins
Summary
5
Advanced Configuration
Advanced Configuration
Creating maintainable configurations
Configuring the file structure
Defining the dependencies
Using the templates
Using the custom variables
Understanding flapping
Summary
6
Notifications and Events
Notifications and Events
Creating effective notifications
Understanding escalations
Sending commands to Nagios
Creating event handlers
Using adaptive monitoring
Summary
7
Passive Checks and NSCA
Passive Checks and NSCA
Understanding passive checks
Using NSCA
Summary
8
Monitoring Remote Hosts
Monitoring Remote Hosts
Monitoring over SSH
Monitoring using NRPE
Comparing NRPE and SSH
Alternatives to SSH and NRPE
Summary
9
Monitoring using SNMP
Monitoring using SNMP
Introducing SNMP
Working with SNMP and MIB
Setting up an SNMP agent
Using SNMP from Nagios
Summary
10
Advanced Monitoring
Advanced Monitoring
Monitoring Windows hosts
Understanding distributed monitoring
Using templates for distributed monitoring
Summary
11
Programming Nagios
Programming Nagios
Introducing Nagios customizations
Programming in C with libnagios
Creating custom active checks
Checking websites
Virtualization and clouds
Writing commands to send notifications
Managing Nagios
Summary
12
Using the Query Handler
Using the Query Handler
Introducing the query handler
Using the core service
Introducing Nagios Event Radio Dispatcher
Summary
Index
Index

Working with SNMP and MIB

Different operating systems can come with different SNMP applications. Many hardware vendors also offer additional software that manage multiple machines using SNMP, for example, HP OpenView or Sun Management Center. For this section and the following ones, we will use the Net-SNMP package (http://net-snmp.sourceforge.net/). This package is included in all Linux distributions and works with almost all UNIX operating systems.

In order to install this package on Ubuntu Linux, run the following command:

apt-get install snmp

For yum-based Linux distributions, the package is called net-snmp and the command to install it is as follows:

yum install net-snmp

The Net-SNMP project homepage also offers binaries for several platforms, including HP-UX and Fedora Linux. Fedora packages should also work on Red Hat Enterprise Linux systems.

It is also possible to build everything from the source for various UNIX operating systems such as AIX, HP-UX, and Solaris. Exact instructions...

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