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  • Book Overview & Buying Learning Nagios 4
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Learning Nagios 4

Learning Nagios 4

By : Wojciech Kocjan
4.2 (10)
Buy this Book
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Learning Nagios 4

Learning Nagios 4

4.2 (10)
By: Wojciech Kocjan
Buy this Book

Overview of this book

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

Virtualization and clouds

Nowadays, more and more IT systems are moving into private or public cloud solutions. Clouds allow the more efficient use of resources and movement from smaller to bigger CPU power, memory, or storage capacity instantly.

Clouds can be divided into two forms:

  • Public clouds: These are clouds hosted by external companies and allow the use of their machines as a service. There are a few public cloud providers that are most popular and commonly used—AWS from Amazon and Azure from Microsoft.

  • Private clouds: These are setups where the company that wants to use the system also hosts it.

Both have their advantages and disadvantages, and sometimes both types of clouds are used. There are multiple free and commercial technologies to set up private clouds—VMware being a very popular one in enterprise IT infrastructure.

Nagios provides many ready-to-use plugins for various types of clouds. If possible, it is always a good idea to use the already-existing plugins. However, often...

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Learning Nagios 4
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