By Bart ten Brinke
Write customized scripts to observe, research, and optimize any machine on your network
Overview
- Learn anything new right away! a quick, quickly, concentrated advisor offering instant results.
- Write customized plugins to watch servers, printers, routers, and different devices.
- Pinpoint server functionality matters with ease.
- Improve server functionality by way of discovering the foundation of the matter.
In Detail
The genuine problem of functionality matters comes from attempting to get to the foundation of the matter. Having a tracking process arrange makes your existence, as a approach administrator, much easier.
The immediate Munin Plugin Starter is a pragmatic, hands-on consultant that teaches you the way to establish and visual display unit your community. via an easy step by step approach you'll how one can computer screen different units on your community and learn how to write your personal plugins. via the tip of the e-book you may have the talents and the boldness to write down plugins for any daily task.
This ebook breaks down tracking with Munin into small, easy-to-follow steps.
It begins by way of establishing a webserver to behave as a Munin grasp and ends via educating you ways to jot down a customized plugin via yourself.
Learn tips to configure Munin nodes to observe servers and different units on your community. this may make it effortless to watch switches, printers, or the other machine connected to the community.
If you must find out how tracking promises perception into your community, the Munin Plugin Starter is the e-book for you.
What you'll research from this book
- Configure a Munin master.
- Set up a Munin node.
- Instal plugins.
- Monitoring hardware.
- Setting up the Munin grasp webserver.
- Writing a plugin in Bash and Perl.
- Finding plugins to observe specifics on your network.
Approach
Get to grips with a brand new know-how, comprehend what it truly is and what it may well do for you, after which get to paintings with crucial good points and tasks.This hands-on Starter advisor gets you up and working with Munin and Munin plugins, supplying you with the ability to observe, repair, and optimize your networks.
Who this publication is written for
This publication is superb for method directors who are looking to enhance the tracking point in their structures. it truly is assumed that you've got a few event with Linux-based structures and recognize your means round them.
Read or Download Instant Munin Plugin Starter PDF
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Extra resources for Instant Munin Plugin Starter
Example text
We use $Munin::Plugin::me to fetch the name of the plugin. After that, we process all our global variables. As we want this plugin to be as versatile as possible, we swap all of the hardcoded values from our bash script for configurable values. We set the warning and critical levels to the defaults or fetch them from the munin environment. We use a regular expression to get the username from the symlink, and we use that to build the $user_directory variable. Because somebody might use a different location as the value /home, we make that configurable as well.
Troubleshooting Now it could very well be possible that it isn't working for you. log for errors. log on the munin server for access calls and errors. ÊÊ Try to connect from your Munin master to your node using Telnet 4949. ÊÊ If you can connect, type nodes and check whether the name of your node is there. localdomain and check whether you get a list of plugins. conf (see the Munin node configuration section). 21 Instant Munin Plugin Starter Monitoring additional devices Not all things you want to monitor will be able to run munin-node themselves.
If you want to monitor routers, switches, or printers, you will have to set up a munin-node to do that for you. Of course, the device will need to be networked and have either SNMP or another interface exposed that can be used to monitor it. In this section, we will be going through the steps of doing just that. If you understand how you can add a single networked device, you can go ahead and start monitoring all the devices in your network. We will be setting up monitoring of a networked router through SNMP.