HTTP Notes

Installation Packages
-----------------------------
1- install package: apache2-mpm-prefork


Commands of Interest
-------------------------------
1- /etc/init.d/apache2 restart  : restart the server with new configuration
2- a2ensite site.file.name      : enable a site file
   a2dissite site.file.name     : disable a site file
3- a2enmod module name          : enable an available module
   a2dismod module name         : disable an enabled module


Files and Directories
---------------------
1- /etc/apache2                : Configuration files
   /etc/apache2/README         : Documentation of configuration structure
   /etc/apache2/apache2.conf   : Main configuration file
   /etc/apache2/conf.d/        : Directory of misc. configurations
   /etc/apache2/mods-available/: Directory of available modules
   /etc/apache2/mods-enabled/  : Directory of modules that are in use
   /etc/apache2/sites-available/: Directory of available virtual hosts
   /etc/apache2/sites-enabled/  : Directory of virtual hosts that are used
   
2- /var/www                    : parent directory for all sites
   /var/www/domain             : our site DocumentRoot(s)

3- /var/log/apache2            : log file directory
   /var/log/apache2/error.log  : start/stop/error messages
   /var/log/apache2/access.log : log of HTTP requests


Specific Configuration Tasks
-----------------------------------------------------------------------
   
   
To allow the documenation to be read from campus
-----------------------------------------------------------------------
1- Edit /etc/apache2/conf.d/apache2-doc
Change this line:
================FROM======================
   Allow from  127.0.0.0/255.0.0.0 ::1/128
=================TO=======================
   Allow from  127.0.0.0/255.0.0.0 144.38.192.0/255.255.224.0 ::1/128
==========================================
2- /etc/init.d/apache2 restart



To set up organizational websites
-----------------------------------------------------------------------
0- su -
1- cd /etc/apache2/sites-available
2- edit default, add "ServerName your.server.name" directive to
   VirtualHost configuration.
3- edit new.site.file
This is the site1.horgoth.com site file
========================================================================
<VirtualHost *>
        ServerName horgoth.com
        ServerAdmin webmaster@horgoth.com
        
        DocumentRoot /var/www/site1.horgoth.com
        <Directory />
                Options FollowSymLinks
                AllowOverride None
        </Directory>
        <Directory /var/www/site1.horgoth.com/>
                Options Indexes FollowSymLinks MultiViews
                AllowOverride None
                Order allow,deny
                allow from all
        </Directory>

        ErrorLog /var/log/apache2/error.log

        # Possible values include: debug, info, notice, warn, error, crit,
        # alert, emerg.
        LogLevel warn

        CustomLog /var/log/apache2/access.log combined
        ServerSignature On
</VirtualHost>
========================================================================

This is the site2.horgoth.com site file
========================================================================
<VirtualHost *>
        ServerName site2.horgoth.com
        ServerAdmin webmaster@horgoth.com
        
        DocumentRoot /var/www/site2.horgoth.com
        <Directory />
                Options FollowSymLinks
                AllowOverride None
        </Directory>
        <Directory /var/www/site2.horgoth.com/>
                Options Indexes FollowSymLinks MultiViews
                AllowOverride None
                Order allow,deny
                allow from all
        </Directory>

        ErrorLog /var/log/apache2/error.log

        # Possible values include: debug, info, notice, warn, error, crit,
        # alert, emerg.
        LogLevel warn

        CustomLog /var/log/apache2/access.log combined
        ServerSignature On
</VirtualHost>
========================================================================
4- Enable the new site with
   a2ensite site1.horgoth.com
   a2ensite site2.horgoth.com
5- Make directory for site
   mkdir /var/www/site1.horgoth.com
   mkdir /var/www/site2.horgoth.com
6- If not already defined, add the site name to DNS configuration.
   The site name must resolve to the IP address of the server.  If
   www.site.name is desired, these names must also be configured
   correctly.
7- /etc/init.d/apache2 restart
8- Set up content in DocumentRoot
9- Browse site with
   http://site1.horgoth.com/document or http://site2.horgoth.com/document


To allow more than one DNS entry to be used by each virtual host
-----------------------------------------------------------------------
0- su
1- edit /etc/apache2/sites-available/site.file
2- add a line after the ServerName configuration:
========================================================================
	ServerAlias www.site1.horgoth.com
========================================================================
3- /etc/init.d/apache2 restart