Setup HAProxy on CentOS !!!

HAProxy stands for High Availability Proxy, for the High Performance TCP/HTTP load balancing.

Installation Steps :

# yum -y install wget gcc gcc-c++ autoconf automake make

# wget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.20.tar.gz /download

# tar -zxf haproxy-1.4.20.tar.gz

# cd haproxy-1.4.20

# make TARGET=centos

# cp haproxy /usr/sbin/haproxy

Now take configuration files :

# wget http://layer1.rack911.com/haproxy/haproxy-standard.cfg -O /etc/haproxy.cfg

# wget http://layer1.rack911.com/haproxy/haproxy.init -O /etc/init.d/haproxy

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Sample /etc/haproxy.conf file:

global
maxconn 4096
pidfile /var/run/haproxy.pid
daemon

defaults
mode http
retries 3
option redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000

listen server0 192.168.1.1:80
mode http
balance roundrobin
server server1 192.168.1.2:80 check ( Replace with your public IPs)
server server2 192.168.1.3:80 check
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Start the load balancer now

Note : Just make sure you have set a proper data syncronization between your two web-servers