Configuring HAProxy as a load balancer for use with multiple Internet Access on-premises gateways

Procedure

1. Open the configuration file located at /etc/haproxy/haproxy.cfg.
2. In the defaults section, set the mode to tcp.
3. Complete the configuration to be used in load balancing.

   defaults
       mode                    tcp
       ...
   frontend main
       bind *:<port>
       default_backend             auth_proxy
   backend auth_proxy
       balance     <balance>
       server  app1 <IP/FQDN 1>:<port 1> check
       server  app2 <IP/FQDN 2>:<port 2> check
       ...
       server  appN <IP/FQDN n>:<port n> check

   The following table explains the values you must specify in the placeholder fields in order to complete the configuration.

   Field	Value
   Port	Listening port on the load balancer used as the authentication proxy
   Balance	The desired load balancing algorithm. Use source if you are mapping a client-server relationship based on the client’s IP address.
   IP/FQDN (1, 2, … )	IP or FQDN of a Service Gateway with the Internet Access on-premises gateway installed
   Port (1, 2, … )	Listening port on a Service Gateway used for the authentication proxy