我在3台服务器上使用NGINX reverproxy来密码保护应用程序。 nginx在服务器上保存端口80，应用程序在localhost端口x上运行。 nginx fwds请求从客户端端口x访问vip：vipport。
我在服务器1上有一个vip，通过keepalived获得keld，haproxy在所有3台服务器上对端口80执行LB和运行状况检查。我正在查看界面，并且取消应用程序并没有将服务器行变为红色，因为nginx端口仍在运行..有没有办法让ha准确地表示应用程序端口关闭？
#---------------------------------------------------------------------
# Example configuration for a possible web application. See the
# full configuration options online.
#
# http://haproxy.1wt.eu/download/1.4/doc/configuration.txt
#
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
log 127.0.0.1 local0 notice # only send important events
chroot /var/lib/haproxy.app
pidfile /var/run/haproxy.app.pid
user haproxy
group users
daemon
# turn on stats unix socket
stats socket /var/lib/haproxy.elasticsearch/stats level admin
#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
mode tcp
log global
option tcplog
option dontlognull
timeout connect 4s
timeout server 30s
timeout client 30s
timeout http-request 10s
timeout queue 30s
timeout http-keep-alive 5s
timeout check 5s
maxconn 10000
frontend front
mode tcp
bind ipin:vipport
default_backend back
backend back
balance leastconn
source ipin
#balance roundrobin
#option ssl-hello-chk
stick-table type ip size 200k expire 60m
stick on src
server server3 ip:80 check
server server2 ip:80 check
server server1 ip:80 check
listen stats
bind *:99
mode http
stats enable
stats uri /