global
  maxconn 10000
  chroot /var/tmp
  daemon
  uid 99
  gid 99
  pidfile /var/run/haproxy.pid

frontend vimg
  bind 0.0.0.0:80
  maxconn 10000
  mode http
#  option httpclose
  clitimeout 10000
  reqisetbe ^GET\ /ha_status status
  reqisetbe ^Host:\ www.xxx.com BACKEND_1
  reqisetbe ^Host:\ www.yyy.com BACKEND_2
  default_backend BACKEND_1

backend BACKEND_1
  fullconn 5000
  mode http
  contimeout 10000
  srvtimeout 5000
  option redispatch
#  option httpclose
  balance roundrobin
  retries 3
  server 10.1.1.151 10.1.1.151:80 check inter 10000 rise 1 fall 3

backend BACKEND_2
  fullconn 5000
  mode http
  contimeout 10000
  srvtimeout 5000
  option redispatch
#  option httpclose
  balance roundrobin
  retries 3
  server 10.1.2.161 10.1.2.161:80 check inter 10000 rise 1 fall 3

backend status
  stats uri /
  mode http
  balance roundrobin
  stats realm backend\ servers'\ status
  stats auth ha:root