Não é possível fazer o Haproxy UP

Question

Não é possível fazer o Haproxy UP sempre que a seção "Listen" for adicionada no arquivo de configuração. Apontar para abrir o Haproxy Stats, mas não é capaz de alcançar através de configurações abaixo.

Eu não sei onde estou fazendo errado.

Configuração estatística do HAproxy no Ubuntu 16.04.2 LTS.

haproxy -version
+++++++++++++++++

HA-Proxy version 1.6.3 2015/12/25


haproxy.cfg 
+++++++++++

global

log         127.0.0.1 local2        #Log Configuration

chroot      /var/lib/haproxy
pidfile     /run/haproxy.pid
maxconn     4000
user        haproxy         #Haproxy running under user and group "Haproxy"
group       haproxy
daemon

#turn on stats unix socket
stats socket /var/lib/haproxy/stats                                  

defaults
mode                        http
log                         global
option                      httplog
option                      dontlognull
option http-server-close
option forwardfor           except 127.0.0.0/8
option                      redispatch
retries                     3
timeout http-request        10s
timeout queue               1m
timeout connect             10s
timeout client              1m
timeout server              1m
timeout http-keep-alive     10s
timeout check               10s
maxconn                     3000                                       

listen haproxy-monitoring
bind :8080              #Haproxy Monitoring RUN on port 8080
mode http
option forwardfor
option httpclose
stats enable
stats show-legends
stats refresh 5s
stats uri /stats        #URL for HAproxy monitoring
stats realm Haproxy\ Statistics
stats auth admin:admin
stats admin if TRUE
default_backend haproxy_http

frontend http
bind *:90
option https-server-close
option forwardfor
default_backend haproxy_http

backend haproxy_http
balance roundrobin
option httpchk HEAD / HTTP/1.1\r\nHOST:\ localhost   #Check Health
server server-1 192.168.1.124:80 check
server server-2 192.168.1.123:80 check

Após iniciar o HAproxy, Abaixo do erro.

 Error:
 ++++++
 haproxy.service - HAProxy Load Balancer
 Loaded: loaded (/lib/systemd/system/haproxy.service; enabled; vendor preset: enabled)
 Active: inactive (dead) (Result: exit-code) since Thu 2018-02-15 21:27:55 IST; 14s ago
 Docs: man:haproxy(1)
       file:/usr/share/doc/haproxy/configuration.txt.gz
 Process: 1486 ExecStartPre=/usr/sbin/haproxy -f ${CONFIG} -c -q (code=exited, status=1/FAILURE)

 Feb 15 21:27:55 loadbal systemd[1]: haproxy.service: Control process exited, code=exited status=1
 Feb 15 21:27:55 loadbal systemd[1]: Failed to start HAProxy Load Balancer.
 Feb 15 21:27:55 loadbal systemd[1]: haproxy.service: Unit entered failed state.
 Feb 15 21:27:55 loadbal systemd[1]: haproxy.service: Failed with result 'exit-code'.
 Feb 15 21:27:55 loadbal systemd[1]: haproxy.service: Service hold-off time over, scheduling restart.
 Feb 15 21:27:55 loadbal systemd[1]: Stopped HAProxy Load Balancer.
 Feb 15 21:27:55 loadbal systemd[1]: haproxy.service: Start request repeated too quickly.
 Feb 15 21:27:55 loadbal systemd[1]: Failed to start HAProxy Load Balancer.

Por favor, ajude-me a resolver este problema para obter a estatística HAproxy.