This guide will step you through the process of installing HAProxy on CentOS 6.
To install HAProxy on CentOS 6 you first need to set up your installation to use the epel software repository. HAProxy is not available in the default CentOS repositories.
(Note: All commands below require root privileges.)
rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-7.noarch.rpm
You can now install haproxy.
yum -y install haproxy
Now that HAProxy is installed, you can configure the haproxy.cfg file.
Once you have configured HAProxy, its time to start the service.
service haproxy start
By default HAProxy wont be set to run at system startup. To enable HAProxy to always start when the PC boots up, run the following:
chkconfig haproxy on
For more information on configuring HAProxy, please check my other howto articles.