Installing ntop network monitoring tool
ntop is a network traffic probe that shows the network usage, similar to what the popular top Unix command does. ntop is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform and on Win32 as well.
ntop users can use a a web browser (e.g. netscape) to navigate through ntop (that acts as a web server) traffic information and get a dump of the network status. In the latter case, ntop can be seen as a simple RMON-like agent with an embedded web interface.
1. Install required packages
apt-get install ntop
Installing the Hobbit monitor on lenny
Hobbit monitors your hosts, your network services, and anything else you configure it to do via extensions. Hobbit can periodically generate requests to network services - http, ftp, smtp and so on - and record if the service is responding as expected. You can also monitor local disk utilisation, logfiles and processes through the use of agents installed on the servers.
Before you install, make sure you have Apache web server installed.
1. Install hobbit packages
apt-get install hobbit hobbit-client hobbit-plugins
Monitoring multiple servers with Munin
Munin is a network/system monitoring application that presents output in graphs through a web interface. Its emphasis is on simple plug and play capabilities. A large number of monitoring plugins are available. Using Munin you can easily monitor the performance of your computers, networks, SANs, and quite possibly applications as well. It makes it easy to determine "what's different today" when a performance problem crops up. It makes it easy to see how you're doing capacity wise on all limited resources.
Master monitoring server
1. Install Munin and Munin node daemon:
apt-get install munin munin-node
Installing Zenoss monitoring system
Zenoss is an award-winning open source IT monitoring product that effectively manages the configuration, health and performance of networks, servers and applications through a single, integrated software package.
Start by adding a zenoss entry to your apt sources (pico /etc/apt/sources.list):
deb http://dev.zenoss.org/deb main stable
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