Beginner's question about tcp mode/transparent

Hey folks, here's what I'm trying to accomplish: I have two server applications (database servers, not that it matters), on two different systems. I would like HAProxy to do the following:

• listen on a port
• transparently forward all tcp connections on that port to the 'hot' server/app
• if the hot is down for eg 10 seconds, switch to the warm, and forward all tcp connections on that port to the warm instead

The way I'm trying to test my configuration is the following:

• HAProxy listening on a port
• two instances of netcat listening on two other ports (to simulate the remote databases)
• telnetting to HAProxy and trying to see characters pass through to the netcat sessions

Of course this is all on one system, but I have no reason to think it wouldn't at least show me that it works ... ? Anyway obviously it's not working, and any advice would be welcome.

 From reading the config docs, I think I'm close - but not quite there. Here's my configuration:

global

    log 127.0.0.1 local0
    maxconn 1000
    #quiet
    user haproxy
    group haproxy
    # daemon forks into the background
    daemon
    # debug dumps everything to stdout and disables daemon     debug
    pidfile /var/run/haproxy.pids

defaults

    log global
    timeout connect 5s
    timeout client 10s
    timeout server 10s

listen tcp_proxy 127.0.0.1:5432

    mode tcp
    transparent
    server hot 127.0.0.1:5433
    server warm 127.0.0.1:5434 backup

Cheers,
Robert Prince Received on 2008/11/06 01:55