Subject: Load Balancer & Real Time Content
To: None <netbsd-users@netbsd.org>
From: Zafer Aydogan <zafer@gmx.org>
List: netbsd-users
Date: 08/05/2004 11:53:03
Hello Newsgroup,

I have the order to set up some kind of web-server which is fail-safe and
fast at once.

I though about setting up 3 machines with the same content, with a
load-balancer infront, which is a ipf rule like:
 
rdr ex1 20.20.20.5/32 port 80 -> 192.168.0.5, 192.168.0.6, 192.168.0.7 port
8000

Though, the problem i'm thinking about is, how do i get the machines in sync
all the time? 
I mean, if an Editor changes some Websites, how does the other both machines
notice the change and synchronize?

I thought about rsync in a crontab once a day, but that is fair not fast
enough.
Is there a way of "real-time" syncing ? with the aspect of fail-proof, if
one machine get down.

Thanks, for any Ideas.
Regards, Zafer.