PUBLIC MARKS from camel with tag admin

This site will hope to provide both content and community for those who are interested in Ubuntu on the server. Ubuntu, more often than not, is viewed as a newby distribution for desktop use. Even though Ubuntu makes a great desktop, it also makes a great robust server as well and this site hopes to focus on that. The framework of the site is still being developed so bare with me here a bit, but enjoy!

MySQLTuner is a script written in Perl that will assist you with your MySQL configuration and make recommendations for increased performance and stability. Within seconds, it will display statistics about your MySQL installation and the areas where it can be improved. It’s key to remember that MySQLTuner is a script which can assist you with your server, but it is not the solution to a badly performing MySQL server. The best performance gains come from a thorough review of the queries sent to the server, and an evaluation of the MySQL server itself. A qualified developer in your application’s programming or scripting language should be able to work with a MySQL database administrator to find improvements for your server. Once the server and application are optimized well, you may need to consider hardware upgrades to the physical server itself. This is a really useful tool for helping to optimize MySQL performance.Understanding the various my.cnf variables and how they affect performance can seem really complicated but this tool takes some of the pain away and makes it easier to understand the effects of each variable.It is especially useful to be able to see the global memory usage, memory usage per thread and the maximum possible memory usage - that is really valuable information that is otherwise complex to calculate.

I'm pleased to present you with part one of a two part series on creating a photo site using PHP, jQuery, and AJAX. Originally, I intended to fit the entire tutorial into one screencast, but that quickly became a pipe dream as I realized that there was simply too much to cover. Nevertheless, even if you only watch this first video, you should learn a great deal. We'll be retrieving images from a database, creating a simple login form with authentication, and will then allow for our database to be asynchronously updated. Sounds good? If so, let's get into it.

Panda is an open source solution for video uploading, encoding and streaming. Unlike other video platforms, Panda is not just a service for encoding your videos for the web; Panda handles the whole process. From the upload form to streaming, Panda takes control. By providing an elegant REST API, Panda makes it completely painless to implement full video uploading, encoding and streaming functionality to your web application in a matter of hours. * Runs completely within Amazon's Web Services utilising EC2, S3 and SimpleDB. * Everything contained within one elegant Merb application. * Support for the numerous encoding profiles FFmpeg supports including FLV, h264 for Flash a iPhone formats. * Panda gem for painless integration with Ruby on Rails and Merb. * Lovely little admin dashboard for managing your videos.

* grep : filtrer des données * sort : trier les lignes * wc : compter le nombre de lignes * uniq : supprimer les doublons * cut : couper une partie du fichier

Ce document regroupe les principales commandes susceptibles d'être employées régulièrement par les utilisateurs Unix, en rappelant leurs options les plus courantes.

Ce document rappelle les commandes et les options les plus utilisées par l'administrateur d'un système Linux. Il s'agit surtout de commandes assez générales, dont tout administrateur aura besoin un jour ou l'autre.

The XenAccess project was inspired by ongoing research within the Georgia Tech Information Security Center (GTISC). The purpose of this library is to make it easier for other researchers to experiment with the many uses of memory introspection without needing to focus on the low-level details of introspection. If you are using this library and come up with a useful extension to it, we are always happy to receive patches.

Créer un VPN en quelques minutes Posted in avril 15th, 2008 by admin in Apple, Linux et Open-Source, Windows Cet article est destiné à ceux qui désirent mettre en place un VPN de manière simple sécurisée et surtout rapide. La solution a un nom elle s’appelle Hamachi. C’est Logmein qui l’édite. Vous pouvez télécharger la version gratuite ici. Le logiciel s’installe sous Windows, Mac OS et Linux.

The Server is the computer you want to connect to. This is the computer where the FreeNX server will need to be installed. The name of the Ubuntu package providing the server is “freenx”. For the example used here, the home computer is the server. The Client is the computer from which you want to be able to access the Server. The name of the Ubuntu package providing the client is “nxclient”. For the example used here, the work computer is the client.

voici quelques outils pour travailler efficacement sur un groupe de machines

This plugin allows you to add highly customisable forms to your website that allows non-registered users and/or subscribers (also configurable) to submit posts. The posts are kept in "draft" until an admin can publish them (also configurable).

Je vais présenter dans ce billet 4 outils graphiques, vous permettant de gérer et de monitorer vos instances MySQL

Ever had to make the same change on more than one Linux/unix server? Find it annoyingly painful to keep repeating the exact same commands again and again and again? This tool addresses exactly this problem. You run a utility (cssh) providing a number of server names as parameters, and then xterms opens up to each server with an extra “console” window. Anything typed into the console is replicated into each server window (so, for examples, you can edit the same file on N machines at the same time, or run the same commands with the same parameters across those servers). It is also possible to type into the server windows directly, or temporarily disable replication to one or more of the servers through the “Hosts” menu.

Using NTP is a great way to keep your system clock set correctly. It works by contacting a number of servers around the world, asking them for the time and then calculating what the correct local time is from their responses.

Un bon admin doit lire ses logs régulièrement. En général parce qu'un système de surveillance lui a remonté un problème. Les logs sont en souvent très denses. Il existe un moyen pour les rendre plus lisibles. Il s'agit de coloriser le texte.

Outil Système Complet d'Assistance Réseau, cédérom OSCAR: sauvegarde disque dur en réseau linux

XenMan is an intuitive, graphical management tool aimed at operational lifecycle management for the Xen virtualization platform. XenMan is built on the firm design philosophy that ease-of-use and sophistication can, and should, co-exist in a single management tool. So, XenMan should hopefully prove valuable to both seasoned Xen Administrators as well as those just seeking an introduction to Xen Virtualization.