Riccardo | Linuxaria

My Notes from Open Source System Management Conference 2012

May 132012

Even this year I was in Bolzano (Italy) for the annual conference organized by Wuerth-Phoenix on Monitoring with Open Source products.

I found the conference very interesting, with speakers from around the world that have described several open source products and best practices on monitoring but also on configuration and management tools. A big surprise for me has been the strong push for alternatives softwares to Nagios for monitoring in particular Shinken and Icinga have received many praise.

But before I give some more details about the presentations a few words about the company that has hosted about 400 people in their, free of charge, event, Wuerth-Phoenix manufactures and markets an appliance called NetEye, within there are many Open source products including:

Nagios Core, with many preinstalled plugins, Cacti, ocsinventory, GLPI, NfSen, Nedi, and DocuWiki the highest level version has also OTRS, all these software are integrated with some web management interface developed by Wuerth-Phoenix itself. Continue reading »

Suicide Linux : The final test for your interview

Pills 2 Responses »

May 072012

I accidentally discovered this package for debian, very trivial but brilliant in its simplicity: at the first error done on the command line it performs a rm -rf / , so it try to delete the drive completely, this package is called Suicide Linux, and you should absolutely not install it on your machine.

To test this you can use an expendable virtual machine .
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Tips and Tricks for Nginx

Articles, Guides, Opinion 3 Responses »

May 052012

Nginx is an emerging Web server (it claims to power around 12% of the website) and is known for its high performance, stability, rich feature set, simple configuration, and low resource consumption.

Personally I’m using it from 2010 and so far so good, no particular problems, it does perfectly his work and is frequently updated by the developers, I’m really happy of how is performing on my VPS and in this time I’ve learnt some small tricks and tips that perhaps could save you some time in the future.

Convert your audio files on Linux with Soundconverter

Guides, Pills, Reviews 9 Responses »

May 012012

It’s useful sometime to convert some type of audio files in another, and perhaps you don’t want to search for the correct command to use from the terminal, don’t worry there is a small and nice application that can do this for you: soundconverter

SoundConverter is an audio file converter for the GNOME Desktop. It reads anything GStreamer can read (Ogg Vorbis, AAC, MP3, FLAC, WAV, AVI, MPEG, MOV, M4A, AC3, DTS, ALAC, MPC, Shorten, APE, SID, MOD, XM, S3M, etc…), and writes to WAV, FLAC, MP3, AAC, and Ogg Vorbis files.

More than enough for my standard tasks.

How to put Varnish in front of your Webserver without doing any change.

Articles, Guides 12 Responses »

Apr 302012

Varnish is an open source “web accelerator” which you can use to speed up your website.

It can cache certain static elements, such as images or javascript but you can also use it for other purposes such as Load balancing or some additional security, in general most of the people want to try it and test their website to see if it’s really so amazing (IMO yes, but test it yourself).

The traditional guides will tell you to move your webserver to another port, perhaps 81,8080 or just bind to localhost, configure Varnish to listen to port 80 and use the web server as backend, the server where Varnish will forward requests not found in his cache.

This is the “normal” configuration and it works fine, but sometimes you just want to make a quick Test or perhaps you are using a Control Panel, such as Cpanel, Kloxo or ISPConfig and in my experience change the standard listening ports of Apache is not a decision to be taken lightly with these tools.

So in a VPS (with Kloxo) I’ve used a different approach: iptables.
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