#---------------------------------------------------------------------
# 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 haproxy3-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 howtoforge:howtoforge            #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
    option http-server-close
    option forwardfor
    default_backend app-main
 
#---------------------------------------------------------------------
# BackEnd roundrobin as balance algorithm
#---------------------------------------------------------------------
backend app-main
    balance roundrobin                                     #Balance algorithm
    option httpchk HEAD / HTTP/1.1\r\nHost:\ localhost    #Check the server application is up and healty - 200 status code
    server server1 172.20.32.109:80 check 
    server server2 172.20.32.110:80 check

http {
    server {
        listen 80;

        location / {
            proxy_pass http://backend;
        }
    }

    upstream backend {
        server 172.20.32.109:80;
        server 172.20.32.110:80;
    }
}