haproxy.conf

# Documentation for HAProxy
#   http://code.google.com/p/haproxy-docs/w/list
#   http://haproxy.1wt.eu/download/1.2/doc/architecture.txt

# NOTES:
#   open files limits need to be > 256000, use ulimit -n to set (on most POSIX systems)

global
        log 127.0.0.1     local0
        log 127.0.0.1     local1 notice
        maxconn           256000
        chroot            /var/lib/haproxy
        user              haproxy
        group             haproxy
        spread-checks     5
        daemon
        quiet

defaults
        log               global
        option            dontlognull
        option            redispatch
        option            allbackups
        maxconn           256000
        timeout connect   5000

backend riak_rest_backend
       mode               http
       balance            roundrobin
       option             httpchk GET /ping
       option             httplog
       server riak1 riak1.<FQDN>:8098 weight 1 maxconn 1024  check
       server riak2 riak2.<FQDN>:8098 weight 1 maxconn 1024  check
       server riak3 riak3.<FQDN>:8098 weight 1 maxconn 1024  check
       server riak4 riak4.<FQDN>:8098 weight 1 maxconn 1024  check

frontend riak_rest
       bind               127.0.0.1:8098
       mode               http
       option             contstats
       default_backend    riak_rest_backend


backend riak_protocol_buffer_backend
       balance            leastconn
       mode               tcp
       option             tcpka
       option             srvtcpka
       server riak1 riak1.<FQDN>:8087 weight 1 maxconn 1024  check
       server riak2 riak2.<FQDN>:8087 weight 1 maxconn 1024  check
       server riak3 riak3.<FQDN>:8087 weight 1 maxconn 1024  check
       server riak4 riak4.<FQDN>:8087 weight 1 maxconn 1024  check


frontend riak_protocol_buffer
       bind               127.0.0.1:8087
       mode               tcp
       option             tcplog
       option             contstats
       option             tcpka
       option             srvtcpka
       default_backend    riak_protocol_buffer_backend

listen stats 0.0.0.0:9001       #Listen on all IP's on port 9000
       mode               http
       balance            roundrobin
       timeout client     5000
       timeout connect    4000
       timeout server     30000
 
       #This is the virtual URL to access the stats page
       stats uri          /haproxy_stats        
 
       #Authentication realm. This can be set to anything. Escape space characters with a backslash.
       stats realm        HAProxy\ Statistics 
 
       #The user/pass you want to use. Change this password!
       stats auth         admin:passwordhere   
 
       #This allows you to take down and bring up back end servers.
       #This will produce an error on older versions of HAProxy.
       stats admin if TRUE