PUBLIC MARKS from lecyborg with tag documentation

Liste de contacts partagés - « Shared rosters » Les listes de contacts partagés forment une nouvelle fonctionalité qui permet aux administrateurs d'ejabberd d'ajouter des utilisateurs jabber qui seront présents dans le roster de tous les utilisateurs du server.

Ce bout de code vient juste après l’article sur l’installation de ejabberd, test de l’authentification ldap. Ca fonctionne très bien ! Il suffit de modifier le fichier de conf /etc/ejabberd/ejabberd.cfg

Nagios is a powerful, modular network monitoring system that can be used to monitor many network services like smtp, http and dns on remote hosts. It also has support for snmp to allow you to check things like processor loads on routers and servers. I couldn't begin to cover all of the things that nagios can do in this article, so I'll just cover the basics to get you up and running.

The Asus EeePC is a low cost ultra portable notebook computer. To install Ubuntu on the Asus EeePC in it's stock form, you will have to create a USB based bootable installer or use a USB-connected CD-ROM drive to run/install Ubuntu. In addition to this, a few simple software modifications will have to be completed for hardware support.

eeeXubuntu is a custom version of the Xubuntu 7.10 Live CD with fully-integrated hardware support, including native wireless drivers, functioning Ethernet support, tweaks for low-resolution desktop environments, and other miscellaneous fixes. Wherever possible, these changes are incorporated using custom .deb packages rather than spewing assorted files all over post-install. (Screenshot) The goal of this project is to maintain a easy-to-install Xubuntu Live CD image for the eeePC, allowing for a reliable base Xubuntu install. One strong advantage of development for the eeePC is a common hardware platform shared by all users. (Those who are missing a miniPCI slot may, of course, disagree.)

Retour d'expérience sur l'installation d'ubuntu sur eeePC

I run a few cPanel servers and run Munin as my resource monitor. At the time I wrote this the version included with cPanel was munin 1.24. Ever since I have installed the plugin from cPanel it would monitor MySQL upon first install and then stop if the server was reboot. Uninstalling and reinstalling would once again get Munin to monitor MySQL but having to uninstall and reinstall just for a reboot, just did not seem like something that you should have to do. After many months of on and off testing this is the fix I have come up with.

“Munin” means “memory”.Munin the tool surveys all your computers and remembers what it saw. It presents all the information in in graphs through a web interface. Its emphasis is on plug and play capabilities. After completing a installation a high number of monitoring plugins will be playing with no more effort. 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. It uses the excellent RRDTool and is written in Perl. Munin has a master/node architecture in which the master connects to all the nodes at regular intervals and asks them for sdata. It then stores the data in RRD files, and (if needed) updates the graphs. One of the main goals has been ease of creating new plugins (graphs).

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.

La série d'articles de cette rubrique est entièrement dédiée à la mise en oeuvre d'un serveur de mail basé sur Postfix et Cyrus-Imap. Ces deux éléments sont tout simplement ce qui ce fait de mieux actuellement dans leur domaine respectif: * Postfix : protocole smpt ou smtps pour le mode sécurisé * Cyrus imap : protocole POP3 ou POP3S (mode sécurisé) ou IMAP ou IMAPS (mode sécurisé).

This article shows how to integrate amavisd-new into a Postfix mail server for spam- and virus-scanning. amavisd-new is a high-performance interface between MTAs such as Postfix and content checkers: virus scanners, and/or SpamAssassin. We will use ClamAV for virus scanning and SpamAssassin for spam scanning in this tutorial. I want to say first that this is not the only way of setting up such a system. There are many ways of achieving this goal but this is the way I take. I do not issue any guarantee that this will work for you!

This document requires Postfix version 2.0 or later. This document gives an overview of how Postfix can be used for hosting multiple Internet domains, both for final delivery on the machine itself and for the purpose of forwarding to destinations elsewhere. The text not only describes delivery mechanisms that are built into Postfix, but also gives pointers for using non-Postfix mail delivery software.

In this article you'll learn how to syndicate your own custom RSS feeds using PHP and MySQL. We'll first learn how to create two database tables and then how to retrieve data from them which will be formatted into an RSS feed. Here's an example of the completed RSS feed and a download link to the code. Let's start by taking a look at how to create the MySQL database tables.

Our intention is not to build a fail-safe system nor a HA-Linux. We are just using RAID-1 mirrored disks to make sure that the system can be restored easily if 1 disk crashes. The following has been tested only twice (hey, we've got other things to do). It did work for us, it might work for you. It might also make your rats go berserk or just blow your mind.

This is a quick tutorial on how to setup your Linux environment and VirtualBox, so that it can automatically create network interfaces and put them in bridge when the VM is launched.

Qui dit conventions dit accords. Une convention n’est pas une règle. Une règle c’est quelque chose d’obligatoire, une convention non. Mais ça peut engendrer des pénalités, dans notre contexte c’est une diminution de la productivité. Cependant la convention peut créer des obligations. C’est-à-dire qu’on dit : voilà cette chose elle est comme ça. Pourquoi ? Ben pourquoi pas ? On bâtit dessus et on avance. Et pourquoi ? Un seul mot, productivité.

Gestion du cryptage des données avec Bacula.

SSH also has a wonderful feature called SSH Port Forwarding, sometimes called SSH Tunneling, which allows you to establish a secure SSH session and then tunnel arbitrary TCP connections through it. Tunnels can be created at any time, with almost no effort and no programming, which makes them very appealing. In this article we look at SSH Port Forwarding in detail, as it is a very useful but often misunderstood technology. SSH Port Forwarding can be used for secure communications in a myriad of different ways. Let's start with an example.

Pure CSS Scrollable Table with Fixed Header Using CSS to allow scrolling within a single HTML table

A RAID device is a Redundant Array of Independent Disks. The concept was developed in 1987 at UC Berkeley and involves the creation of a virtual disk from multiple small disks in order to deliver improved performance and reliability. There are many flavors of RAID and lots of variations in how to implement it. We detail here a specific instance we use: software RAID1 using IDE disks on a Dell PowerEdge box running Debian "sarge" loaded with grub, managed by mdadm, using the ext3 journaling file system.

The system is equipped with 2 similar hard disks (they do not have to be the same but it helps if they are at least similar). The first disk is attached to the primary IDE as master, it will be referenced as /dev/hda. The second disk is attached to the secondary IDE also as master, it will be referenced as /dev/hdc.

WEP was intended to provide comparable confidentiality to a traditional wired network (in particular it does not protect users of the network from each other), hence the name. Several serious weaknesses were identified by cryptanalysts — any WEP key can be cracked with readily available software in two minutes or less — and WEP was superseded by Wi-Fi Protected Access (WPA) in 2003, and then by the full IEEE 802.11i standard (also known as WPA2) in 2004. Despite the weaknesses, WEP provides a level of security that can deter casual snooping

The purpose of this document is to describe how to install OpenVPN server on an Ubuntu Linux system and have it utilize an Ethernet bridge to access your local network. Ethernet bridges essentially allow the operating system to treat multiple network interfaces as one combined port. When used with OpenVPN a bridge will allow you to easily connect external users to your internal network and have them receive all traffic as though they were locally connected. The alternative is to use OpenVPN with a route but that will not allow some forms of traffic through (such as multicast), multicast traffic is important to me as many games require multicast data.

Ce document explique comment mettre en place plusieurs types différents de RAID logiciel sur une plateforme Linux.

There is a great howto about installing Xen on Debian Unstable. It is really easy to do and it runs fine. Nevertheless, on production servers, that's not an optimal solution. Debian Unstable has too many updates and things change too often. On production machines, a Xen host system should be stable, secure and should not need much attention. That is where Sarge comes in. If you pull the Xen packages from backports and install them on Debian stable you've got the best of both worlds. Let's do so!