Konfigurasi default di setingan ini menggunakan http / layer 7. kalau mau diubah jadi tcp / layer 4 ganti settingannya jadi seperti ini
global
maxconn 50000
defaults
mode tcp
timeout connect 5s
timeout client 120s
timeout server 120s
frontend mywebsite
bind *:80
default_backend webservers
backend webservers
balance roundrobin
server server1 server1:80 check
server server2 server2:80 check
Referensi:
https://www.serverlab.ca/tutorials/linux/network-services/layer-4-load-balancing-with-haproxy/
https://www.serverlab.ca/tutorials/linux/network-services/layer-7-load-balancing-with-haproxy/