The following diagram summarizes the architecture:
This Package available on epel repository :
1.Install HAproxy and enable it's service on boot:
#yum install haproxy -y
#chkconfig haproxy on
If you’re Ubuntu, Debian or Linux Mint user use this one instead:
#apt-get install haproxy
2.It's time to edit our configuration file:
# vim /etc/haproxy/haproxy.cfg
global
user daemon
group daemon
daemon
log 127.0.0.1 daemon
listen http
bind 1.2.3.4:80 # this is public external external.
mode http
option tcplog
log global
option dontlognull
balance roundrobin
clitimeout 60000
srvtimeout 60000
contimeout 5000
retries 3
server web1 web1.example.com:80 check # webserver-1
server web2 web2.example.com:80 check # webserver-2
cookie web1 insert nocache
cookie web2 insert nocache
3.Save the file and restart HAproxy:
#/etc/init.d/haproxy restart
4. Check that HAproxy, which is listen public ip on port 80 via:
#lsof -i :80
haproxy 32607 haproxy 4u IPv4 134165 0t0 TCP server01:http (LISTEN)
Test on your web browser http://1.2.3.4:80 & refresh more time;