I'm using HAProxy to load balance the incoming requests on my two tomcat backend servers. In the config file when I specify HAProxy to listen to the same machine on which the HAProxy is installed, everything is fine and it starts to work like a charm. I need HAProxy to listen to a virtual IP on another machine (so that I can install another LB as failover), but when I config HAProxy to do so, I get this error on starting HAProxy:
cannot bind socket for proxy http_proxy. Aborting.
here is my config file:
global maxconn 4096 # Total Max Connections. This is dependent on ulimit daemon nbproc 4 defaults mode http clitimeout 60000 srvtimeout 30000 contimeout 4000 option httpclose # Disable Keepalive listen http_proxy 10.0.5.99:80 #the virtual IP I want to listen to mode http stats enable stats auth xxx:xxx balance source # Load Balancing algorithm option httpchk option forwardfor # This sets X-Forwarded-For ## Define your servers to balance server web1 10.0.5.102:8080 weight 1 maxconn 512 check server web2 10.0.5.103:8080 weight 1 maxconn 512 check
I'm using CentOS 5.1 installed on some virtual machines. It's necessary to say that I completely stopped the iptables service on the remote machine and the problem is still there. I suppose something is interfering with haproxy in the remote machine. Any Ideas?