I was able to successfully do it by following the steps on LB server. Thanks.
yum install haproxy
vi /etc/haproxy/hapfoxy.cfg
frontend app_servers *:80
default_backend applications
backend applications
server stapp01 172.16.238.10:8089 check
server stapp02 172.16.238.11:8089 check
server stapp03 172.16.238.12:8089 check
haproxy -f /etc/haproxy/haproxy.cfg
systemctl restart haproxy