haproxy.cfg

# Toy example, ha-proxy reversing traffic to two backend servers based on path
# Has url rewriting and header modification

global
  debug                                   # uncomment to enable debug mode for HAProxy

defaults
  mode http                                # enable http mode which gives us layer 7 filtering
  timeout connect 5000ms                   # max time to wait for a connection attempt to a server to succeed
  timeout client 50000ms                   # max inactivity time on the client side
  timeout server 50000ms                   # max inactivity time on the server side

backend mainSite
  http-request set-header Host dusted.dk
  server main dusted.dk

backend recipeSite
  http-request set-path %[url,regsub(^/vafler/*,/,)] # anything going to this backend needs the URL rewritten to leave out that
  http-request set-header Host vafler.dk
  server vafler vafler.dk

frontend http
  bind :80
  default_backend mainSite

  # /vafler lives on a different server
  acl vaflerPath path_beg /vafler
      use_backend recipeSite if vaflerPath