PUBLIC MARKS with tags monitoring & debian

Munin is a simple to configure tool that make real nice graph about your server status. It can actually deal with almost any aspect of your server (load average, network cards status, CPU usage, memory usage, postfix, exim4, mysql ...) without spending much time in configuring it. Munin produce MRTG likes graph so you can easily see how your server health is going.

Darkstat is a network statistics gatherer.Effectively, it’s a packet sniffer which runs as a background process on a cable/DSL router, gathers all sorts of useless but interesting statistics,and serves them over HTTP.

This guide shows how to install and configure Smokeping on Debian Etch to monitor network latency. From the Smokeping web site: "SmokePing is a deluxe latency measurement tool. It can measure, store and display latency, latency distribution and packet loss. SmokePing uses RRDtool to maintain a longterm data-store and to draw pretty graphs, giving up to the minute information on the state of each network connection."

Nagios 2.5 and Oreon 1.3 (Nagios web frontend) installation in Debian with Screenshots

Pandora watchs your systems and applications, and allows to know the status of any element of that systems. Pandora could detect a network interface down, a defacement in your website, memory leak in one of your server app, or the movement of any value of the NASDAQ new technology market. If you want, Pandora could sent a SMS message when your systems fails... or when Google value low below US$ 33.

saidar is a curses-based application to display system statistics. Statistics include CPU, processes, load, memory,swap, network I/O and disks I/O along with their free space. saidar utilizes libstatgrab library. libstatgrab is a library that provides cross platform access to statistics about the system on which it’s run. It’s written in C and presents a selection of useful interfaces which can be used to access key system statistics. The current list of statistics includes CPU usage, memory utilisation, disk usage, process counts, network traffic, disk I/O, and more.

Interesting way to monitor Raid 5 of PE 2650 running under debian using the dell afacli tool.