haproxy.conf

# Layer7 [mode http]
global
        log /dev/log   local0
        log 127.0.0.1   local1 notice
        maxconn 4096
        user haproxy
        group haproxy
        daemon

defaults
        log     global
        mode    http
        option  httplog
        option  dontlognull
        retries 3
        option redispatch
        maxconn 2000
        contimeout     5000
        clitimeout     50000
        srvtimeout     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

listen stats 0.0.0.0:1236
    mode http
    stats enable
    stats hide-version
    stats refresh 10s
    stats show-node
    stats auth user:pw
    stats uri  /statsloadbalancer?stats
    balance roundrobin
    option httpclose
    option forwardfor

frontend www
   bind 0.0.0.0:80
   reqadd X-Forwarded-Proto:\ http
   default_backend env-backend

backend env-backend
   option abortonclose
   option httpclose
   balance roundrobin
   mode http 
   server web1priv 10.10.10.140:80 check maxconn 500
   server web2priv 10.10.10.147:80 check maxconn 500