In this tutorial we will show you how to install and configuration of HAProxy on your CentOS 6 server. For those of you who didn’t know, HAProxy is a free and open-source Linux application used for load balancing network traffic. This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple. I will show you through the step by step installation of HAproxy on CentOS 6.x from source.
Install and Configure HAproxy on CentOS 6
Step 1. First add yum repository your system.
HAProxy isn’t available in the default repositories for CentOS. In order for us to be able to install it, we need to either compile it from source (preferred) or add the EPEL repository to our server and install it using Yum.
#CentOS 6 – 32-bit
rpm -Uvh http://mirror.overthewire.com.au/pub/epel/6/i386/epel-release-6-8.noarch.rpm
#CentOS 6 – 64-bit
rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
yum install haproxy
We have to modify the configuraion file of haproxy i.e. /etc/haproxy/haproxy.cfg as per our requirement. (Change this configuration as your network requirements). For more configuration details check this url.
#nano /etc/haproxy/haproxy.cfg global
log 127.0.0.1 local0
log 127.0.0.1 local1 debug
maxconn 45000 # Total Max Connections. This is dependent on ulimit
timeout server 86400000
timeout connect 86400000
timeout client 86400000
timeout queue 1000s
# Configuration for HTTP site
listen http_idroot 192.168.2.102:80
balance roundrobin # Load Balancing algorithm
server server1 192.168.2.100:80 weight 1 maxconn 512 check
server server2 192.168.2.101:80 weight 1 maxconn 512 check
# Configuration for HTTPS site listen
balance source# Load Balancing algorithm
reqadd X-Forwarded-Proto:\ http
server server1 192.168.2.100:443 weight 1 maxconn 512 check
server server2 192.168.2.101:443 weight 1 maxconn 512 check
listen stats 192.168.2.102:31337
stats uri /
stats realm Haproxy\ Statistics
stats refresh 5s
stats auth admin:passwd123
service haproxy start
chkconfig haproxy on
Step 5. Now you will able to browse your applicaiton using the IP of the haproxy server. For haproxy Status dashboard you have to browse the URL: http://192.168.2.102:31337. It will ask you for the username and password. Use the username and password you defined on the configuraion file as “stats auth”.
Congratulation’s! You have successfully installed HAProxy. Thanks for using this tutorial for installing HAProxy on CentOS 6 system. For additional help or useful information, we recommend you to check the official HAProxy web site.