Debian

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Installing And Working With eyeOS Under Debian 4.0

Installing And Working With eyeOS Under Debian 4.0

This tutorial shows how you can install eyeOS on a standard Linux system. When you have finished this tutorial, you will have a full, working eyeOS on your server. eyeOS is a kind of operating system which works online, i.e. it manages files on the server and enables the user to upload, download and edit files.

Virtual Users And Domains With Postfix, Courier And MySQL (Debian Etch)

Virtual Users And Domains With Postfix, Courier And MySQL (Debian Etch)

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 Xen 3.1.0 Setup For Debian Etch (i386)

The Perfect Xen 3.1.0 Setup For Debian Etch (i386)

This tutorial provides step-by-step instructions on how to install Xen (version 3.1.0) on a Debian Etch (4.0) system (i386). 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.

Retrieving Emails From Remote Servers With fetchmail (Debian Etch)

Retrieving Emails From Remote Servers With fetchmail (Debian Etch)

Fetchmail is a program for retrieving emails from remote servers. Imagine you have five email accounts on five different servers. Of course, you don't want to connect to each of them to get your emails. This is where fetchmail comes into play. If you have a user account on a Linux server, you can make fetchmail download emails from remote servers and put them into just one mailbox (the one of your Linux user), from where you can retrieve them with your email client (e.g. Thunderbird or Outlook).

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

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

Since Apache 2.1, a new module called mod_proxy_balancer is available which lets you turn a system that has Apache installed into a loadbalancer. This loadbalancer retrieves requested pages from two or more backend webservers and delivers them to the user's computer. Users get the impression that they deal with just one server (the loadbalancer) when in fact there are multiple systems behind the loadbalancer that process the users' requests. By using a loadbalancer, you can lower the load average on your webservers. One important feature of mod_proxy_balancer is that it can keep track of sessions which means that a single user always deals with the same backend webserver. Most websites are database-driven nowadays with user logins etc., and you'd get weird results if a user logs in on one backend webserver, and then his next request goes to another backend webserver, meaning he'd get logged out again. You can avoid this by using mod_proxy_balancer's session-awareness.

Using Ruby On Rails With Apache2 On Debian Etch

Using Ruby On Rails With Apache2 On Debian Etch

This article shows how you can install Ruby on Rails (RoR) and integrate it in Apache2 on a Debian Etch system (including a short section at the end showing how to use RoR in a web site created with ISPConfig). Ruby on Rails is a web application framework which is rapidly gaining popularity among web programmers. It aims to increase the speed and ease with which database-driven web sites can be created and offers skeleton code frameworks (scaffolding) from the outset. Applications using the RoR framework are developed using the Model-View-Controller design pattern.

Running ISPConfig On Port 80 Using Apache's Reverse Proxy Feature (Debian Etch)

Running ISPConfig On Port 80 Using Apache's Reverse Proxy Feature (Debian Etch)

This article shows how you can configure a Debian Etch system that has the webhosting control panel ISPConfig installed so that ISPConfig can be accessed on port 80. By default ISPConfig uses port 81 which is a non-standard port and is blocked by some firewalls and ISPs. By using Apache's mod_proxy module, we can avoid this problem. It lets us create a reverse proxy that can fetch the pages from ISPConfig on port 81.

Server Monitoring With munin And monit On Debian Etch

Server Monitoring With munin And monit On Debian Etch

In this article I will describe how you can monitor your Debian Etch server with munin and monit. munin produces nifty little graphics about nearly every aspect of your server (load average, memory usage, CPU usage, MySQL throughput, eth0 traffic, etc.) without much configuration, whereas monit checks the availability of services like Apache, MySQL, Postfix and takes the appropriate action such as a restart if it finds a service is not behaving as expected. The combination of the two gives you full monitoring: graphics that let you recognize current or upcoming problems (like "We need a bigger server soon, our load average is increasing rapidly."), and a watchdog that ensures the availability of the monitored services.

Virtual Hosting With PureFTPd And MySQL (Incl. Quota And Bandwidth Management) On Debian Etch

Virtual Hosting With PureFTPd And MySQL (Incl. Quota And Bandwidth Management) On Debian Etch

This document describes how to install a PureFTPd server that uses virtual users from a MySQL database instead of real system users. This is much more performant and allows to have thousands of ftp users on a single machine. In addition to that I will show the use of quota and upload/download bandwidth limits with this setup. Passwords will be stored encrypted as MD5 strings in the database.

Debian Etch And Xen From The Debian Repository

Debian Etch And Xen From The Debian Repository

This how-to provides step-by-step instructions on how to install Xen on an already working Debian Etch system. You can find all the software used here in the Etch repository, so no external files or compilation are needed.

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