forward requests to cpanel server through haproxy - redirect

Question

I deployed an loadbalanced infrustructure. I am using haproxy as the loadbalancer and cpanel as backend webservers. I created a test host on the cpanel, and I can see the site in browser when I configure the website in my /etc/host with the cpanel server ip address. But when I change the ip to the loadbalancer it forwards the requests to /usr/local/apache/htdocs/ and I get the default cpanel server page. What configurations should I use in haproxy to redirects requests correctly?
Any help is appreciated.
# Global settings
#---------------------------------------------------------------------
global
log 127.0.0.1 local2 #Log configuration
chroot /var/lib/haproxy
pidfile /var/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
#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
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
#---------------------------------------------------------------------
#HAProxy Monitoring Config
#---------------------------------------------------------------------
listen haproxy2-monitoring *: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 lb2:F6khdTrt9g #User and Password for login to the monitoring dashboard
stats admin if TRUE
default_backend app-main #This is optionally for monitoring backend
#---------------------------------------------------------------------
# FrontEnd Configuration
#---------------------------------------------------------------------
frontend main
bind *:80
default_backend app-main
#---------------------------------------------------------------------
# BackEnd roundrobin as balance algorithm
#---------------------------------------------------------------------
backend app-main
balance roundrobin #Balance algorithm
application is up and healty - 200 status code
server cpanel1 192.168.1.110:80 check
server cpanel2 192.168.1.111:80 check
Cpanel apache config:
Listen 0.0.0.0:80
# BEGIN: HTTP vhosts list
<VirtualHost 88.99.219.13:80>
ServerName wiki.serversetup.ir
ServerAlias mail.wiki.serversetup.ir www.wiki.serversetup.ir
DocumentRoot /home/wiki/public_html
ServerAdmin webmaster#wiki.serversetup.ir
UseCanonicalName Off
CustomLog /etc/apache2/logs/domlogs/wiki.serversetup.ir combined
<IfModule log_config_module>
<IfModule logio_module>
CustomLog /etc/apache2/logs/domlogs/wiki.serversetup.ir-bytes_log "%{%s}t %I .\n%{%s}t %O ."
</IfModule>
</IfModule>
## User wiki # Needed for Cpanel::ApacheConf
<IfModule userdir_module>
<IfModule !mpm_itk.c>
<IfModule !ruid2_module>
UserDir disabled
UserDir enabled wiki
</IfModule>
</IfModule>
</IfModule>
# Enable backwards compatible Server Side Include expression parser for Apache versions >= 2.4.
# To selectively use the newer Apache 2.4 expression parser, disable SSILegacyExprParser in
# the user's .htaccess file. For more information, please read:
# http://httpd.apache.org/docs/2.4/mod/mod_include.html#ssilegacyexprparser
<IfModule include_module>
<Directory "/home/wiki/public_html">
SSILegacyExprParser On
</Directory>
</IfModule>
<IfModule suphp_module>
suPHP_UserGroup wiki wiki
</IfModule>
<IfModule suexec_module>
<IfModule !mod_ruid2.c>
SuexecUserGroup wiki wiki
</IfModule>
</IfModule>
<IfModule ruid2_module>
RMode config
RUidGid wiki wiki
</IfModule>
<IfModule mpm_itk.c>
# For more information on MPM ITK, please read:
# http://mpm-itk.sesse.net/
AssignUserID wiki wiki
</IfModule>
<IfModule alias_module>
ScriptAlias /cgi-bin/ /home/wiki/public_html/cgi-bin/
</IfModule>
# To customize this VirtualHost use an include file at the following location
# Include "/etc/apache2/conf.d/userdata/std/2_4/wiki/wiki.serversetup.ir/*.conf"
</VirtualHost>
# END: HTTP vhosts list