例子

Simple configuration for an HTTP proxy listening on port 80 on all interfaces and forwarding requests to a single backend "servers" with a single server "server1" listening on 127.0.0.1:8000

global
    daemon
    maxconn 256

defaults
    mode http
    timeout connect 5000ms
    timeout client 50000ms
    timeout server 50000ms

frontend http-in
    bind *:80
    default_backend servers

backend servers
    server server1 127.0.0.1:8000 maxconn 32

The same configuration defined with a single listen block. Shorter but less expressive, especially in HTTP mode.

global
    daemon
    maxconn 256

defaults
    mode http
    timeout connect 5000ms
    timeout client 50000ms
    timeout server 50000ms

listen http-in
    bind *:80
    server server1 127.0.0.1:8000 maxconn 32

Assuming haproxy is in $PATH, test these configurations in a shell with:

$ sudo haproxy -f configuration.conf -c