HAProxyKeystoneMiddlware

Lua Based Addition for HAProxy (1.6+) that can replace Keystone Middleware and do the heavy lifting.

To Try this out

You will need HAProxy 1.6

You will need to place the json.lua and the ha_proxy_ksa.lua in the working directory for HAProxy and then configure HAProxy to use the ha_proxy_ksa.lua file. Obviously this is only working for contrived authentication at the moment (devstack-y) and you'll need to modifiy the code to auth correctly with your site.

My Example configuration for HAProxy is as follows with the two lua files in /etc/haproxy:

global
    log /dev/log	local0
    log /dev/log	local1 info
    #chroot /var/lib/haproxy
    stats socket /run/haproxy/admin.sock mode 660 level admin
    stats timeout 30s
    user haproxy
    group haproxy
    daemon

    # Default SSL material locations
    ca-base /etc/ssl/certs
    crt-base /etc/ssl/private

    # Default ciphers to use on SSL-enabled listening sockets.
    # For more information, see ciphers(1SSL). This list is from:
    #  https://hynek.me/articles/hardening-your-web-servers-ssl-ciphers/
    ssl-default-bind-ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS
    ssl-default-bind-options no-sslv3

    lua-load ./ha_proxy_ksa.lua

defaults
    log	global
    mode	http
    option	httplog
    option	dontlognull
        timeout connect 5000
        timeout client  50000
        timeout server  50000
    errorfile 400 /etc/haproxy/errors/400.http
    errorfile 403 /etc/haproxy/errors/403.http
    errorfile 408 /etc/haproxy/errors/408.http
    errorfile 500 /etc/haproxy/errors/500.http
    errorfile 502 /etc/haproxy/errors/502.http
    errorfile 503 /etc/haproxy/errors/503.http
    errorfile 504 /etc/haproxy/errors/504.http

frontend localnodes
    bind *:80
    mode http
    http-request lua.validate_token
    default_backend nodes

backend nodes
    mode http
    server web01 127.0.0.1:8000

The json.lua is vendored from http://regex.info/blog/lua/json and is licensed under Creative Commons.