HAProxy

Sample HAProxy config

A simple, sample HAProxy config file for routing incoming requests to multiple goliath app servers: several app servers per API, and multiple API’s on the same, or multiple machines. For more details on the Haproxy syntax, please read the [configuration documentation](http://haproxy.1wt.eu/download/1.4/doc/configuration.txt). Otherwise, the config file should be self-explanatory:

global
    pidfile /var/run/haproxy.pid
    log 127.0.0.1 local0 info

defaults
    mode http

    clitimeout          600000   # maximum inactivity time on the client side
    srvtimeout          600000   # maximum inactivity time on the server side
    timeout connect     8000  	 # maximum time to wait for a connection attempt to a server to succeed

    stats enable
    stats auth		admin:password
    stats uri		/monitor
    stats refresh	5s
    option httpchk	GET /status
    retries		5
    option redispatch
    errorfile 503 /path/to/503.text.file

    balance roundrobin	# each server is used in turns, according to assigned weight

frontend http
    bind :80
    monitor-uri   /haproxy  # end point to monitor HAProxy status (returns 200)

    acl api1 path_reg ^/api1/?
    acl api2 path_reg ^/api2/?

    use_backend api1 if api1
    use_backend api2 if api2

backend api1
    # option httpclose
    server srv0 127.0.0.1:9000 weight 1 maxconn 100 check inter 4000
    server srv1 127.0.0.1:9001 weight 1 maxconn 100 check inter 4000
    server srv2 127.0.0.1:9002 weight 1 maxconn 100 check inter 4000

backend api2
    option httpclose
    server srv01 127.0.0.1:8000 weight 1 maxconn 50 check inter 4000