Book Image

Nagios Core Administration Cookbook - Second Edition

By : Tom Ryder
Book Image

Nagios Core Administration Cookbook - Second Edition

By: Tom Ryder

Overview of this book

Nagios Core is an open source monitoring framework suitable for any network that ensures both internal and customer-facing services are running correctly and manages notification and reporting behavior to diagnose and fix outages promptly. It allows very fine configuration of exactly when, where, what, and how to check network services to meet both the uptime goals of your network and systems team and the needs of your users. This book shows system and network administrators how to use Nagios Core to its fullest as a monitoring framework for checks on any kind of network services, from the smallest home network to much larger production multi-site services. You will discover that Nagios Core is capable of doing much more than pinging a host or to see whether websites respond. The recipes in this book will demonstrate how to leverage Nagios Core's advanced configuration, scripting hooks, reports, data retrieval, and extensibility to integrate it with your existing systems, and to make it the rock-solid center of your network monitoring world.
Table of Contents (18 chapters)
Nagios Core Administration Cookbook Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Reading status from a Unix socket with MK Livestatus


The NDOUtils event broker and database system is a useful way of getting data out of the Nagios Core program and its history in order to generate our own reports and displays but it has a few flaws; the MySQL database setup can be complicated and a hassle to maintain, and the database can grow quite large, which makes searching slow and uses a lot of system resources not just for data searching, but for the housekeeping it does in removing old entries.

The MK Livestatus tool, part of Mathias Kettner's Check_MK suite of Nagios Core monitoring tools, provides a way of retrieving data directly from the running Nagios process by writing queries to a Unix socket and by reading results back from it, without requiring a database to do so. Provided our queries do not need to be too sophisticated, this extension can make things a lot faster and less burdensome on system resources, which is why a growing number of administrators and Nagios plugin...