load balancing

Hi, I am a Google Code-In 2014 Student. I wrote a great blog post and recorded a screen-cast of setting up load balancing with 4 servers. I wanted to share it with the community. :D

Here is the link: http://www.kalose.net/oss/drupal-8-load-balancing-haproxy/

Any feedback is highly appreciated!

Howdy.

I'm trying to add support for X-Forwarded-Proto and Front-End-Https to Drupal. Right now, if you try to run an HTTPS-only site on a reverse proxy that talks to your web servers via HTTP, AJAX callbacks fail because Drupal incorrectly generates a callback URL based on the protocol between the proxy and the web server, not between the client and the proxy.

I am setting up 2 load balanced servers under 1 ip to run my Drupal sites (multisite installation).
The sites will be using a separate dedicated server for the MySQL databases, on the same rack and 100Mbps network for faster access.
All 3 servers (2 app servers load balanced under one ip and the dedicated mysql server) are on the same physical rack.

Several questions come to mind, in particular...

APPROACH 1: rsync /home directories accross both servers.