Setting up HAProxy on Mac OSX

haproxy.cfg

global
    log 127.0.0.1   local0
    log 127.0.0.1   local1 debug
    #log loghost    local0 info
    maxconn 4096
    #chroot /usr/share/haproxy
    #daemon
    #debug
    #quiet

  defaults
    log     global
    mode    http
    option  httplog
    option  dontlognull
    retries 3
    option redispatch
    maxconn 2000
    timeout connect      5000
    timeout client      50000
    timeout server      50000

  frontend localnodes
    bind *:8000
    mode http
    default_backend nodes

  backend nodes
    mode http
    balance roundrobin
    option forwardfor
    http-request set-header X-Forwarded-Port %[dst_port]
    http-request add-header X-Forwarded-Proto https if { ssl_fc }
    option httpchk HEAD / HTTP/1.1\r\nHost:localhost
    server server1 192.168.1.135:3000 check    

Setup & Install

Install HAProxy from Homebre:
`brew install haproxy`

For full reference:
https://serversforhackers.com/load-balancing-with-haproxy

thx for the gist!

I needed to install from source and have Lua support to, so I wrote this quick article: https://ops.tips/blog/installing-haproxy-lua-macos/

I hope it helps!

This config does not work with the current Homebrew formulae as of Sep 2024:

[ALERT] (58316) : config : Error(s) found in configuration file : /opt/homebrew/etc/haproxy.cfg
[ALERT] (58316) : config : Fatal errors found in configuration.
[NOTICE] (58317) : haproxy version is 3.0.3-95a607c
[ALERT] (58317) : config : parsing [/opt/homebrew/etc/haproxy.cfg:34] : 'option httpchk' : hiding headers or body at the end of the version string is unsupported.Use 'http-check send' directive instead..

The line 34 should expand into like

option httpchk
http-check connect port 3000
http-check send hdr host localhost meth GET uri /
http-check expect status 200