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Debian

High-Availability Load Balancer With HAProxy/Heartbeat On Debian Lenny

Post date: July 14, 2009, 09:07 Category: Installing Views: 7694 Comments
Tutorial quote: This article explains how to set up a two-node load balancer in an active/passive configuration with HAProxy and heartbeat on Debian Lenny. The load balancer sits between the user and two (or more) backend Apache web servers that hold the same content. Not only does the load balancer distribute the requests to the two backend Apache servers, it also checks the health of the backend servers. If one of them is down, all requests will automatically be redirected to the remaining backend server. In addition to that, the two load balancer nodes monitor each other using heartbeat, and if the master fails, the slave becomes the master, which means the users will not notice any disruption of the service. HAProxy is session-aware, which means you can use it with any web application that makes use of sessions (such as forums, shopping carts, etc.).
Debian

Apache: Creating A Session-Aware Loadbalancer Using mod_proxy_balancer (Debian Etch)

Post date: May 29, 2007, 22:05 Category: System Views: 4649 Comments
Tutorial quote: mod_proxy_balancer is an Apache module that lets you create a loadbalancer. This loadbalancer retrieves requested pages from two or more backend webservers and delivers them to the user's computer. An important feature of mod_proxy_balancer is that it keeps track of sessions so that a single user always deals with the same backend webserver.
Untangle

Spam Blocking And Web Filtering With The Untangle 5.3 Network Gateway

Post date: September 4, 2008, 10:09 Category: Security Views: 8684 Comments
Tutorial quote: Untangle bundles common open-source applications for blocking spam, spyware, viruses, adware and unwanted content on the network in one single Linux distribution. It can be integrated into existing networks either as a router or as a transparent bridge (directly behind the router, but before the switch that connects the client PCs with the router). The best thing about Untangle is that you do not have to reconfigure the client PCs - Untangle works out of the box.
Debian

Creating .deb-Packages With Checkinstall

Post date: April 12, 2005, 17:04 Category: Miscellaneous Views: 3219 Comments
Tutorial quote: Checkinstall is a nice tool to create simple .deb-packages that you can use in your local network (e.g. if you have to install the same piece of software on multiple computers running Debian). It lets you compile and install software from the sources like before, but with the difference that you end up with a simple Debian package which also means that you can easily uninstall the software you just compiled by running dpkg -r!

I will demonstrate the use of checkinstall by compiling and installing the anti-virus software ClamAV on a Debian system.

This howto is meant as a practical guide; it does not cover the theoretical backgrounds. They are treated in a lot of other documents in the web.
Debian

Debian Sarge (3.1) with Ruby on Rails and Apache 2 with FastCGI

Post date: May 19, 2006, 18:05 Category: Network Views: 3806 Comments
Tutorial quote: This howto will step you through installing Debian (Sarge) with Ruby on Rails and Apache 2 with FastCGI managed with ISPConfig.
Linux

Enhance Your Mail Server With ASSP (Anti-Spam SMTP Proxy)

Post date: November 20, 2006, 19:11 Category: Software Views: 5437 Comments
Tutorial quote: ASSP stands for Anti-Spam SMTP Proxy. The ASSP server project is an Open Source platform-independent transparent SMTP proxy server that leverages numerous methodologies and technologies to both rigidly and adaptively identify spam. In short ASSP is the most kickass solution that is both free and works great. It reduced spam to an absolute minimum for me.
Debian

Benchmark: Apache2 vs. Lighttpd (Static HTML Files)

Post date: September 21, 2008, 12:09 Category: Benchmarks Views: 6990 Comments
Tutorial quote: This benchmark shows how Apache2 (version 2.2.3) and lighttpd (version 1.4.13) perform compared to each other when delivering a static HTML file (about 50KB in size). This benchmark was created with the help of ab (Apache benchmark) on a VMware vm (Debian Etch); if you try this yourself, your numbers might differ (depending on your hardware), but the tendency should be the same.
Debian

Debian RAID 1/5 system installer

Post date: May 28, 2005, 22:05 Category: Installing Views: 3803 Comments
Tutorial quote: Instructions for installing a very clean Debian GNU/Linux system that boots from RAID 1, and has RAID 1 or RAID 5 root and data filesystems.

The examples assume two identical harddrives, sda and sdb, on which after a small boot partition, 1 GB is used for swap, 25 GB is used for the root filesystem and everything else is for a big "data" partition that will hold non-system stuff.
OpenSUSE

Clive - Download videos from YouTube & other video sharing websites

Post date: August 15, 2008, 22:08 Category: Multimedia Views: 4135 Comments
Tutorial quote: clive is an open source command line tool to extract videos and to bypass the need to use Adobe Flash in order to view user-generated content available on video-sharing websites. Clive supports Youtube, GoogleVideo, Dailymotion, metacafe, Guba, Sevenload, Myvideo. Clive converts the downloaded Flash Video into a MP4 file avoiding the need of having a Flash Video Player.
Debian

Installing Lighttpd With PHP5 And MySQL Support On Debian Squeeze

Post date: February 28, 2011, 13:02 Category: Installing Views: 3801 Comments
Tutorial quote: Lighttpd is a secure, fast, standards-compliant web server designed for speed-critical environments. This tutorial shows how you can install Lighttpd on a Debian Squeeze server with PHP5 support (through FastCGI) and MySQL support.
Web-based applications and online marketing solutions - LumoLink