How To Set Up A Loadbalanced High-Availability Apache Cluster

This tutorial shows how to set up a two-node Apache web server cluster that provides high-availability. In front of the Apache cluster we create a load balancer that splits up incoming requests between the two Apache nodes. Because we do not want the load balancer to become another "Single Point Of Failure", we must provide high-availability for the load balancer, too. Therefore our load balancer will in fact consist out of two load balancer nodes that monitor each other using heartbeat, and if one load balancer fails, the other takes over silently.

Simple Apache 2 Tomcat 5 mod_jk Integration

The whole tutorial is based on many tutorials, but I made a very simple one, with no virtual hosts.

The main source of info can be found here:

http://www.howtoforge.com/apache2_tomcat5_mod_jk

The Perfect Xen 3.0.1 Setup For Debian

This tutorial provides step-by-step instructions on how to install Xen (version 3.0.1) on a Debian Sarge (3.1) system.

Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called "virtual machines" or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.

Setting Up A Highly Available NFS Server

In this tutorial I will describe how to set up a highly available NFS server that can be used as storage solution for other high-availability services like, for example, a cluster of web servers that are being loadbalanced. If you have a web server cluster with two or more nodes that serve the same web site(s), than these nodes must access the same pool of data so that every node serves the same data, no matter if the loadbalancer directs the user to node 1 or node n. This can be achieved with an NFS share on an NFS server that all web server nodes (the NFS clients) can access.

I will try to explain here a clean Debian Sarge 3.1r1 and ColdFusion MX 7.0.1 installation.

Why This Tutorial?

Because there is no documentation about ColdFusion installation on Debian on the internet. As you know Debian Linux is not supported officially by Adobe. But Debian is one of the mosts used and well known Linux distributions especially for server usage and I think there would be some other people who want to use Debian and ColdFusion together.

Getting Things Done in the New Year
Author: Joe Topjian <joe [at] adminspotting [dot] net>

What a better way to start the New Year off than to get organized. There's this really cool Rails application called Tracks that will give you a web-based management interface for organization. Setting it up is pretty easy, and that's what I'll be going over here.

Install Steps VHCS 2.4.6.2 in Debian 3.1 base install

On install of Debian, select no packages to be installed, allow it to connect to the internet and let it download anything it needs, usually its libs etc. Exim is most likely installed at this point so dont worry it will be removed shortly.

1).vi /etc/apt/sources.list (add the following sources)

Code:
deb ftp://ftp.uk.debian.org/debian/ stable main
deb-src ftp://ftp.uk.debian.org/debian/ stable main

The Perfect Xen Setup For Debian And Ubuntu

This tutorial provides step-by-step instructions on how to install Xen (version 2) on a Debian Sarge (3.1) system. It should apply to Ubuntu systems with little or no modifications.

Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called "virtual machines" or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.

Virtual Users And Domains With Postfix, Courier And MySQL (+ SMTP-AUTH, Quota, SpamAssassin, ClamAV)

This document describes how to install a mail server based on Postfix that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses.

The Perfect Setup - Debian Sarge (3.1)

This is a detailed description about the steps to be taken to setup a Debian based server (Debian Sarge alias Debian 3.1) that offers all services needed by ISPs and hosters (web server (SSL-capable), mail server (with SMTP-AUTH and TLS!), DNS server, FTP server, MySQL server, POP3/POP3s/IMAP/IMAPs, Quota, Firewall, etc.).