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Update: As Ubuntu is quite similar to Debian, this howto can also be used for Ubuntu systems. I’ve tested this guide with Ubuntu Server 10.04 LTS and Ubuntu Server 10.10 and I expect this to work on Debian 6 (Squeeze), too.

In Lenny, WordPress is already part of the apt repository. The downsite is that its a quite old version. So this little howto describes how to install the latest WordPress version (currently its 3.0.5) from its tarball by still retaining Debian’s file locations. You need a running LAMP configuration and root permissions to perform the next steps. I’ll use “YOUR.DOMAIN” as a placeholder for your blog domain. Please replace it with your real domain, which is something like “www.kaisblog.de”.

Before we start we need to check WordPress’ dependencies. Just type

# apt-get install wordpress

and select “n” to not install WordPress. If you see more packages than just “wordpress” you might want to install them now using “apt-get install”.

We want to install WordPress in /usr/share, so cd into it:

# cd /usr/share

Now we need to get and unpack the latest WordPress version:

# wget http://wordpress.org/latest.zip
# unzip -e latest.zip

This creates the wordpress directory. You can also download the .tar.gz version but for most plugins / themes you need unzip anyway. As Debian handles webapps like normal apps, we should create a config directory in /etc and copy the sample config into it:

# cd wordpress
# mkdir /etc/wordpress
# cp wp-config-sample.php /etc/wordpress/wp-YOUR.DOMAIN-config.php

Again, please replace “YOUR.DOMAIN” with your blog domain. In my case its “wp-www.kaisblog.de-config.php”.

Now create a config file in /usr/share/wordpress/ that reads our config file in/etc/wordpress:

# nano wp-config.php

Paste the following code into it:

<?php
include("/etc/wordpress/wp-YOUR.DOMAIN-config.php");
define('ABSPATH',dirname(__FILE__).'/');
require_once(ABSPATH.'wp-settings.php');
?>

Press CTRL+X to save the file and quit nano.

mySQL

Now its time to create a mysql database where WordPress stores its data in:

# mysql -uroot -p

Enter your mysql root password and you’ll see the mysql prompt. We’ll create a user and a database called wordpress:

# GRANT ALL PRIVILEGES ON wordpress.* TO wordpress IDENTIFIED BY "S3cr3t!";
# FLUSH PRIVILEGES;
# quit

Please replace “S3cr3t!” with your own password :)

Now edit /etc/wordpress/wp-YOUR.DOMAIN-config.php and enter your mysql settings:

# nano /etc/wordpress/wp-YOUR.DOMAIN-config.php
define('DB_NAME', 'wordpress');
/** MySQL database username */
define('DB_USER', 'wordpress');
/** MySQL database password */
define('DB_PASSWORD', 'S3cr3t!');
/** MySQL hostname */
define('DB_HOST', 'localhost');

At the bottom of this config file you’ll find this line:

/* That's all, stop editing! Happy blogging. */

Please delete everything under this line as its already included in /usr/share/wordpress/wp-config.php

Apache

Debian handles apache sites in two different directories: /etc/apache2/sites-available and /etc/apache2/sites-enabled. We create a WordPress site config in /etc/apache2/sites-available and enable it with a2ensite when we are ready to do so.

# nano /etc/apache2/sites-available/YOUR.DOMAIN

Paste the following code into it:
<VirtualHost *:80>
ServerName YOUR.DOMAIN
ServerAdmin webmaster@YOUR.DOMAIN
DocumentRoot /var/www/YOUR.DOMAIN/
<Directory />
Options FollowSymLinks
AllowOverride All
</Directory>
ErrorLog /var/log/apache2/error.log
CustomLog /var/log/apache2/access.log combined
LogLevel warn
</VirtualHost>

Again, press CTRL+X to save and exit nano.

As you can see, our root directory is /var/www/YOUR.DOMAIN. Thats where Debian (and most other distributions) stores it’s websites. As our WordPress installation is in /usr/share/wordpress, we need to create a symlink:

# ln -s /usr/share/wordpress /var/www/YOUR.DOMAIN

Now we change some filesystem permissions to be able to upload content:

# chown -R www-data:www-data ./wp-content

If you want to change the look of your permalinks you need an writeable .htaccess file in your root directory and mod_rewrite to be enabled:

# touch .htaccess
# chown www-data:root .htaccess
# a2enmod rewrite

For this to work make sure you have “AllowOverride All” set for your document root. Our apache site config already has it included. After changing the permalinks (this can be done later) you can make it read-only again:

# chmod 440 .htaccess

To enable your blog enter:

# a2ensite YOUR.DOMAIN
# apache2ctl restart

You should now be able to open http://YOUR.DOMAIN/wp-admin/install.php in your browser and finalize your blog setup. Enjoy.