Installing on a Linux system, we have:

apt-get install haproxy

The configuration is done in the file /etc/haproxy/haproxy.cfg

The following test command will allow us to see the installed version:

haproxy -v

The haproxy.cfg file is where the haproxy configuration is done, and it will be used to do about 95% of the config. It is divided into several parts:

• global
• default
• frontend
• backend
• listen (which is intended to replace frontend and backend)

You will have more information on the dedicated note a little further.

The configurations to know are :

• daemon configuration : it is done in the file /etc/sysconfig
• logrotate configuration : it is done by configuring the file /etc/haproxy/haproxy.cfg
• The data storage directory is /var/lib/haproxy
• The haproxy error templates are in /usr/share/haproxy. These templates can help us define automatic response formats such as a 404 response. In a security context, a 404 error can be disguised with a legitimate page.