There are several RPM builds of haproxy that can be found throughout the Internet.  There are GitHub repositories with customized .spec files to build your own RPM.  In fact, there is an haproxy.spec file that may be found in the official .tar.gz file under examples.  However, here is a unique way to build one as close to the original, haproxy-1.5.4-2.el6.rpm,…