Web hosting HA setupI have 5 servers:Server-1:     Webhosting Controlpanel (192.168.1.1)Server-2:     Load balancer [Haproxy] (Public IP:192.168.1.2 and               Virtual IP:192.168.1.3)Server-3 & 4: Data Servers Mounted data from NFS so data is same on               each server i.e /home (192.168.1.4, 192.168.1.5)Server-5 :    NFS Server (192.168.1.6) shared directory /homeMy problem is I'm not able to mount /home from virtual IP of load balancer. I don't know how to configure HAproxy to access shared folders from servers.I can access the mounted directories /home from servers directly but I want to mount the /home by load balancer so that I have some HA setup.NOTELoad balancer is working for Apache I can see the Apache default page loading from virtual IP of the load balancer.Here is a model image of setup:          
High availibility setup with NFS
nfs;web;hosting services
I'm not sure I full understand your question so if I'm incorrect please let me know. I think you'd be better off setting up a active/passive architecture for NFS vs. fronting NFS with HAProxy. There is a pretty detailed tutorial that walks you through setting up 2 NFS servers and using DRBD to have the 2 server monitor each other, and failing over as needed.http://www.howtoforge.com/high_availability_nfs_drbd_heartbeatI'd also point you to this thread that discusses in more detail the cons with trying to front NFS with HAProxy vs. the active/passive approach.http://comments.gmane.org/gmane.comp.web.haproxy/5098