haproxy.cfg

#
# This is a sample configuration. It illustrates how to separate static objects
# traffic from dynamic traffic, and how to dynamically regulate the server load.
#
# It listens on 192.168.1.10:80, and directs all requests for Host 'img' or
# URIs starting with /img or /css to a dedicated group of servers. URIs
# starting with /admin/stats deliver the stats page.
#

global
        maxconn         10000
        stats socket    /var/run/haproxy.stat mode 600 level admin
        log             127.0.0.1 local2
        chroot          /var/empty
        daemon

# The public 'www' address in the DMZ
frontend public
        bind            *:80 name clear
        bind           *:443 ssl crt /path/to/pem
        mode            http
        log             global
        option          httplog
        option          dontlognull
        monitor-uri     /monitoruri
        maxconn         8000
        timeout client  30s

        stats uri       /admin/stats
        #use_backend     static if { hdr_beg(host) -i img }
        #use_backend     static if { path_beg /img /css   }
        default_backend dynamic

# The static backend backend for 'Host: img', /img and /css.
backend static
        mode            http
        balance         roundrobin
        option prefer-last-server
        retries         2
        option redispatch
        timeout connect 5s
        timeout server  5s
        option httpchk  HEAD /favicon.ico
        server          statsrv1 @STATS_NODE0@:80 check inter 1000
        server          statsrv2 @STATS_NODE1@:80 check inter 1000

# the application servers go here
backend dynamic
        mode            http
        balance         roundrobin
        retries         2
        option redispatch
        timeout connect 5s
        timeout server  30s
        timeout queue   30s
        #option httpchk  HEAD /login.php
        cookie          DYNSRV insert indirect nocache
        fullconn        4000 # the servers will be used at full load above this number of connections
        server          dynsrv1 @NODE0@:80 minconn 50 maxconn 500 cookie s1 check inter 1000
        server          dynsrv2 @NODE1@:80 minconn 50 maxconn 500 cookie s2 check inter 1000