将3000个haproxy服务器端口映射到3000个后端服务器端口

Question

我想将3000个haproxy服务器端口映射到3000个后端服务器端口。在haproxy.cfg文件中进行此更改时，它给我错误

Apr  9 12:44:47 lbhdf4 haproxy-systemd-wrapper[54400]: [ALERT] 099/124447 (54401) : Starting proxy mp40874: cannot bind socket [0.0.0.0:40874]

任何人都可以告诉我如何将haproxy的3000个端口绑定到后端服务器的3000个端口

以下是端口之一的配置。对于3000个端口，遵循相同的配置。

global
    log 127.0.0.1 local0 notice
    user haproxy
    group haproxy
    maxconn 20000
    daemo 

defaults
    log global
    mode    tcp
    option  tcplog
    option  dontlognull
    option  redispatch
    retries 3
    maxconn 8192
    timeout connect 10000
    timeout queue 60000
#   timeout client  60000
#   timeout server  60000

listen mp40001
    bind *:40001
    mode http
    balance roundrobin
    option httplog
    option forceclose
    option httpclose
    timeout client 6m
    timeout server 6m
    timeout connect 6m
    timeout queue 6m
    server mp114_p20463 xx.xx.xx.xx:20463 check maxconn 6
.
.
.
.
listen mp43000
    bind *:43000
    mode http
    balance roundrobin
    option httplog
    option forceclose
    option httpclose
    timeout client 6m
    timeout server 6m
    timeout connect 6m
    timeout queue 6m
    server mp114_p40557 yy.yy.yy.yy:40557 check maxconn 6