Feb 062009
 

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mod_slotlimit is an Apache module that using dynamic slot allocation algorithm and static rules, can manage resources used for each running site.

Preparing Your system

In order to compile mod_slotlimit, you will need to have apxs2 (APache eXtension tool) installed and configured with Apache.

Use the following command to install

#apt-get install apache2-prefork-dev build-essential

Now we download the source package from here

wget http://kent.dl.sourceforge.net/sourceforge/mod-slotlimit/mod_slotlimit.tar.gz

Next open archive, compile and install module with those commands:

#tar zxvf mod_slotlimit.tar.gz

#cd mod_slotlimit-1.1

#make

#make install

This will complete the installation

Load Module

Now in the main config file add mod_slotlimit module.

#vi /etc/apache2/httpd.conf

LoadModule slotlimit_module   /usr/lib/apache2/modules/mod_slotlimit.so

Configuring mod_slotlimit

Usefule Directives and if you want more check mod_slotlimit documentation

AvailableSlotsPercent -- Percentage of apache slots available in order to activate dynamic slot allocation algorithm
MaxConnectionsPerSite -- Max connections for each running site
LimitSite -- Specific site to limit
LimitSiteConnections -- Max connections for "LimitSite"
ClientIpLimit -- Number of maximum simultaneous connection per IP
ForceVhostName -- Force vhost hostname in scoreboard. Useful when vhost hostname do not match site visited, for example if you're using mod_vhost_alias

Now edit apache2 configuration file

#vi /etc/apache2/apache2.conf

Add the following lines save and exit

<IfModule mod_slotlimit.c>
AvailableSlotsPercent 15
MaxConnectionsPerSite 30
LimitSite www.BadSite.xxx
LimitSiteConnections 15
ClientIpLimit 15
ForceVhostName On
</IfModule>

Now restart Apache server using the following command

#/etc/init.d/apache2 restart

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 Posted by at 3:36 pm

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