I recently upgraded our HAProxy server from Debian Squeeze to Debian Wheezy and wanted to play around with the HTTP Keep-Alive and SSL support in the latest dev version of HAProxy 1.5 (1.5-dev21 as of this post). I thought maybe wheezy-backports would have the latest 1.5 dev version but couldn't find anything. I started trying to figure out how to install HAProxy from Debian experimental when I found this site: http://haproxy.debian.net/

Instructions (from http://haproxy.debian.net/)

Enable wheezy-backports by adding this to your /etc/apt/sources.list file OR by creating something like /etc/apt/sources.list.d/backports.list:

deb http://ftp.us.debian.org/debian wheezy-backports main

Enable the http://haproxy.debian.net/ repository by creating a /etc/apt/sources.list.d/haproxy.list file with this in it:

deb http://haproxy.debian.net wheezy-backports main

Make sure you have the debian-keyring package installed:

sudo apt-get install debian-keyring

Import the proper GPG keys:

gpg --no-default-keyring --keyring=/usr/share/keyrings/debian-keyring.gpg \
    --export [email protected] | sudo apt-key add -

Perform an apt-get update

sudo apt-get update

Finally, install HAProxy 1.5:

sudo apt-get install haproxy -t wheezy-backports

You should now have the latest HAProxy 1.5 version (which is 1.5-dev21 as of this blog post).

What about Ubuntu?

There is a PPA available for Ubuntu here: https://launchpad.net/~vbernat/+archive/haproxy-1.5