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Saturday, March 21 2009

Connecting to a ReadyNAS duo using SSH

Having acquired a ReadyNAS duo for my new backup system, I wanted to explore the system that runs on it and see if I could run more services on it. There is nothing terrific in this article as many people have already done this before. Anyway it describes step by step what must be done to connect to the ReadyNAS.

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Sunday, February 8 2009

Symfony cryptic error: Error importing plugins/sfPropelPlugin/lib/propel/builder/SfPeerBuilder.php

Symfony is a nice PHP framework, when it works. Sometimes when you run symfony you get a cryptic error and you have no clue on how to fix the problem. The article shows one of them and how to solve it.

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Saturday, February 7 2009

Server configuration management: track changes with subversion and be notified

Tracking changes in a server configuration can be critical to understand problems, identify security breaches and repair a server. When several people are in charge of administering one or several servers, sharing the configuration changes is helpful to inform each other about these modifications. The article describes a simple organization that uses subversion and daily mail notifications in case of change.

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Tuesday, February 3 2009

New price list for Planzone service

project success depends on superior teamwork and the right set of tools. Planzone is a comfortable and efficient collaboration workspace for you and your team. A new price list is available with new features all this to cut the prices down!

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Sunday, February 1 2009

Upgrading Symfony projects to release 1.2

Symfony is a PHP framework for building web application. I have two projects that use Symfony 1.1 and I wanted to upgrade to the new 1.2 release. This article lists some issues that I found and how I fixed them.

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Wednesday, January 28 2009

Apache and JBoss integration with mod_rewrite and mod_proxy

To integrate JBoss behind an Apache server you often use the mod_jk module. There is another solution which combines the use of Apache mod_rewrite and mod_proxy. This solution provides more flexibility and could be more robust.

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Monday, January 26 2009

Inserting a file in a JSF view with a custom component

My problem was to give some flexibility in a JSF page to customize some blocks so that a marketing team could easily change those blocks. Basically the marketing team needs to insert some promotion, advertising or specific presentation blocks. For this, they ask a designer to make those blocks. The designer will give us some piece of HTML (with Javascript) that must be inserted in the page.

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Sunday, January 25 2009

Transparent Web server migration with Apache proxy

When you do a server relocation you get a new server, install it, configure it and make sure your new Web server is ready to go. During this installation, the old server was still running. Now, it is time to make the switch. This article discusses one issue related to DNS and how you can solve it.

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Sunday, December 21 2008

Audit errors reported by linux kernel - why you must care

On Ubuntu 8.04 running a Linux 2.6.24 kernel, you may see some strange error logs reported by dmesg. First you will look at them, you'll wonder where they come from and you will soon ignore them. You should better fix the problem, in most cases they point out a need to update AppArmor configuration files.

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Thursday, September 11 2008

Viadeo passwords are not secure: can you trust web 2.0 applications?

We are using more and more Saas applications available on the Internet. Social networking applications like LinkedIn, Facebook, Plaxo are quite famous in the world, Viadeo is well known in France. In all these applications that you use, you have to authenticate yourself (this is a good thing). In many cases, you just have to give an email and a password. What confidence can you give these applications? Can you trust them? Are they secure enough?

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Saturday, July 5 2008

Restoring a complete system after a hard disk failure: bacula to the rescue!!!

Last day the main disk of by computer stopped to work. My Western Digital 150Gb raptor hard disk was no longer recognized by the system: it was simply dead after one year of work. The 10000 rpm disk contained the Ubuntu 8 system, my home directory with all my files and other important critical and important data. When this kind of problem happens, you don't care about the 3 year warranty of your disk, but you are very thankful to the backup system that you put in place. Indeed at the end of the day, you will only have lost some time but not your critical data. Here is how.

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Monday, June 23 2008

Présentation de l'interface utilisateur Planzone

Pour ceux qui souhaitent avoir un apercu de Planzone avant de s'enregistrer, une video est disponible: Présentation de l'interface utilisateur Planzone

Augeo Software lance la plateforme de collaboration Planzone

C'est parti! Augeo Software lance Planzone, une nouvelle plateforme en mode SaaS (Software as a Service) de collaboration et de gestion de projets, basée sur les concepts et technologies Web 2.0. Voir l'article Augeo Software lance la plateforme de collaboration Planzone

Wednesday, April 23 2008

Death match: Windows Vista versus XP

I'm amazed to see people speak about Vista as the Saint Graal of operating systems. Is it worth to upgrade? Many people will not ask the question and will jump to it with closed eyes. Take care!!!! You should better think twice before the upgrade (this is true for every software in fact). The article written by Randall C. Kennedy, Death match: Windows Vista versus XP, is interesting in drawing the most important reasons why you should stay with your XP version.

I'm also amazed upset to see that in 2008, a Microsoft Vista running on a 3 Ghz CPU with 2Gb of memory does not bring anything compared to an operating system from 1998 running a P3 350Mhz with 128Mb of memory. 10 years of serious hardware progress. Big regression on the software side.

Sunday, April 20 2008

Fixing the rising edge of a 68HC11 output signal

Hardware or software problem? That's the question when your embedded board does not work as expected. Spotting the issue can be a challenge.

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Sunday, April 13 2008

Deploying a J2EE application behind an Apache server in a production environment

You have created a Web application using a JBoss application server and you are going to put it in production. Great!

But deploying your application with JBoss serving the Web requests directly may not be the optimal solution. First because the Tomcat web server embedded within JBoss is not the best server to serve static files and second because configuring Tomcat and JBoss for best performance and security is in general a complex and tedious task.

Instead, it is a good practice to use an Apache server (2.0 or 2.2) in front of your JBoss/Tomcat. This Apache server can serve static files, take care of your SSL security and manage for you all the details of HTTP headers (Expires and other headers) and more....

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Sunday, December 9 2007

Building a Lego House

The Lego is a famous construction game that I used to play with 30 years ago. My brother Cyril is still enjoying this game and he has recently made the Faucon Ultimate Collector's Millennium Falcon™!. Adelaide is doing the same with a nice Lego House.

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Tuesday, November 27 2007

Installing GNAT Ada 2005 on Ubuntu

Installing the GNAT Ada 2005 compiler on a linux station is quite easy but requires many steps. The compiler installation is straigtforward but to get a complete environment you also need to install some Ada libraries such as XML Ada,GtkAda, Asis, Florist and others.

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Friday, November 2 2007

Planzone - A workspace for getting things done

Planzone is a new project collaboration application available online. A project management, a document store and a wiki space per-project gives the first steps in sharing the project with team members or partners.

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Monday, April 2 2007

2 semaines contre 29 mois

C'est le temps qu'il nous a fallu pour nous décider d'acheter et ensuite aménager (presque) complètement l'appartement aprés notre déménagement en 2004. C'est long mais ca en vallait le coup!

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