Tag - server

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Distributed programming using Git

I am being used to programming on *nix systems for many years. I quite early discovered the interest of using source code managers (SCM's) such as CVS at first, then Subversion (also called SVN) when it imposed itself as a valid replacement for CVS.

I used them a lot, first for simplifying some collaborative working tasks, such as code sharing and history keeping, and second for home projects, in a easy way for backup, history tracking, and working on the same set of files on different computers at the same time.

This came to become seriously problematic when I tried to use Subversion for both collaborative work, and centralizing my work among different computers.

And then, Git appeared, and it solved all my problems.


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A WebDAV server

WebDav is a HTTP extension which allows users to put files, create directories, just like you would do using a FTP server. Its major advantages on FTP are that it uses a unique TCP inbound communication channel and passes though web standard ports (it's still HTTP !), reducing problems for accessing from firewalled networks, and takes profit from web servers in general, such as authentication and the use of HTTPS secured communication channels.

A simple WebDav application is for instance the SyncPlaces Firefox extension, allowing you to share your bookmarks among different computers, using the WebDav server for storing the bookmarks files.

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HTTPS setup

Today I will talk about setting up HTTPS with Apache on a Debian system. HTTPS is used for secure connections between your web browser and the web server, minimizing the risk for hostile people to be able to listen to your communications by using standard network sniffing techniques.

This may be useful, if some of your websites handles personal data, such as a webmail application for instance.

This article supposes you already set up a basic Apache web server, as described in this previous article.

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Blog engine setup

Today I will talk about how to setup a blog engine just like the blog you are reading. It uses the Dotclear PHP application.

We will also have to install and setup the PostgreSQL database system for that purpose.

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Web server setup

Today we will discuss about basic Apache-based web server installation. This is a quite straightforward process on Debian systems.

I will also present the steps to setup the most commonly used Apache modules.

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QEMU and KQEMU

I recently presented KVM as an efficient virtualization solution for PC's with VMX-enabled processors. Today I present another efficient solution for older processors.

QEMU is a well-known full system emulator, powerful enough to virtualize complete hardware systems. Its major drawback is that it actually emulates the processor, making it unefficient for virtualization purposes when performance is required. The KQEMU kernel module allows QEMU to use the host processor when running on a PC and emulating a PC, removing that performance barrier.

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Using KVM for virtual server setup

What best way to test a server setup than to just use a brand new machine dedicated for this purpose ? Unfortunately, not everyone has a spare computer dedicated to such activities. But there is at least one solution : use a virtual machine !

The virtualization solution I have been using is KVM, one of the most efficient ones.

This article deals with the different problems system administrators may encounter when setting up such a virtual server, as well as setting up the host computer (running a flavour of Debian GNU/Linux) to let it communicate with the virtual server.

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About the host server

This blog, as well as some other of more or less private websites, is hosted on a home server I setup for the occasion. In a series of different articles I will detail how exactly I did to get running different services. I hope it would be helpful for some others who would like to do the same.

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